DRAFT ENVIRONMENTAL IMPACT REPORT

SNOWCREEK VIII, SNOWCREEK MASTER PLAN UPDATE - 2007

PROJECT

Lead Agency: Town of Mammoth Lakes

Community Development Department PO Box 1609

Mammoth Lakes, CA 93546

SCH # 2006112015 August 2007

SNOWCREEK VIII, SNOWCREEK MASTER PLAN UPDATE - 2007

DRAFT ENVIRONMENTAL IMPACT REPORT

Submitted to:

Town of Mammoth Lakes Community Development Department

PO Box 1609 Mammoth Lakes, CA 93546

Attn: Bill Taylor Deputy Community Development Director

Submitted by:

In association with:

SWCA Environmental Consultants Treadwell & Rollo

LSC Transportation Consultants, Inc.

August 2007

This document is prepared on paper with 30% recycled content.

Snowcreek VIII, Snowcreek Master Plan Update - 2007 Table of Contents Draft Environmental Impact Report Page i SCH # 2006112015

TABLE OF CONTENTS

Section Page

I. INTRODUCTION/SUMMARY ........................................................................................................ I-1 A. INTRODUCTION................................................................................................................. I-1 B. PURPOSE OF THE EIR ....................................................................................................... I-1 C. PROPOSED PROJECT......................................................................................................... I-2 D. AREAS OF KNOWN CONTROVERSY/ISSUES ............................................................. I-3 E. ALTERNATIVES ................................................................................................................ I-4 F. SUMMARY OF ENVIRONMENTAL IMPACTS & MITIGATION MEASURES ........ I-5

II. ENVIRONMENTAL SETTING....................................................................................................... II-1

A. INTRODUCTION ............................................................................................................... II-1 B. EXISTING CONDITIONS.................................................................................................. II-1 C. RELATED PROJECTS...................................................................................................... II-23

III. PROJECT DESCRIPTION...............................................................................................................III-1

A. PROJECT APPLICANT .....................................................................................................III-1 B. PROJECT CHARACTERISTICS ......................................................................................III-1 C. PROJECT OBJECTIVES .................................................................................................III-43 D. DISCRETIONARY ACTIONS ........................................................................................III-46

IV. ENVIRONMENTAL IMPACT ANALYSIS ............................................................................. IV.A-1

A. IMPACTS FOUND TO BE LESS THAN SIGNIFICANT.......................................... IV.A-1 B. AESTHETICS .................................................................................................................IV.B-1 C. AIR QUALITY................................................................................................................IV.C-1 D. BIOLOGICAL RESOURCES ...................................................................................... IV.D-1 E. CULTURAL RESOURCES ...........................................................................................IV.E-1 F. GEOLOGY AND SOILS................................................................................................ IV.F-1 G. HYDROLOGY AND WATER QUALITY .................................................................. IV.G-1 H. LAND USE AND PLANNING..................................................................................... IV.H-1 I. NOISE............................................................................................................................... IV.I-1 J. POPULATION AND HOUSING ...................................................................................IV.J-1 K. PUBLIC SERVICES ..................................................................................................... IV.K-1 L. RECREATION................................................................................................................IV.L-1

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M. TRANSPORTATION AND TRAFFIC ........................................................................IV.M-1 N. UTILITIES AND SERVICE SYSTEMS ..................................................................... IV.N-1

V. GENERAL IMPACT CATEGORIES ..............................................................................................V-1

A. SUMMARY OF SIGNIFICANT UNAVOIDABLE IMPACTS.......................................V-1 B. GROWTH INDUCING IMPACTS OF THE PROPOSED PROJECT .............................V-2 C. SIGNIFICANT IRREVERSIBLE CHANGES TO THE ENVIRONMENT ....................V-5

VI. ALTERNATIVES TO THE PROPOSED PROJECT.................................................................... VI-1

A. ALTERNATIVE A: NO PROJECT – 1981 SNOWCREEK MASTER PLAN............. VI-7 B. ALTERNATIVE B: ALTERNATE SITE PLAN ......................................................... VI-14 C. ALTERNATIVE C: REDUCED DENSITY.................................................................. VI-21 D. ALTERNATIVE D: INCREASED DENSITY .............................................................. VI-28 E. ENVIRONMENTALLY SUPERIOR ALTERNATIVE................................................ VI-35

VII. PREPARERS OF THE EIR AND PERSONS CONSULTED .....................................................VII-1 VIII. REFERENCES...............................................................................................................................VIII-1

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APPENDICES (Under Separate Cover)

APPENDIX A: NOTICE OF PREPARATION (NOP) AND INITIAL STUDY APPENDIX B: RESPONSES TO NOP AND EIR SCOPING MEETING APPENDIX C: AIR QUALITY DATA APPENDIX D: BIOLOGY DATA APPENDIX E: CULTURAL RESOURCES REPORT AND PEER REVIEW LETTER APPENDIX F: GEOTECHNICAL/HAZARDS REPORTS AND PEER REVIEW COMMENTS APPENDIX G: HYDROLOGY DATA APPENDIX H: NOISE DATA APPENDIX I: LETTERS FROM PUBLIC SERVICE AND UTILITY AGENCIES APPENDIX J: TRAFFIC DATA APPENDIX K: LAND EXCHANGE COVENANT APPENDIX L: WATER SUPPLY ASSESSMENT APPENDIX M: TOWN OF MAMMOTH LAKES DEVELOPER IMPACT FEE SCHEDULE

REVISED JUNE 2007 APPENDIX N: AFFORDABLE HOUSING MITIGATION PLAN LETTER

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FIGURES Figure Page

Figure II-1 Regional and Vicinity Map .............................................................................................. II-2 Figure II-2 Aerial Photograph............................................................................................................. II-3 Figure II-3 Project Areas Map ............................................................................................................ II-7 Figure II-4 Zoning Map..................................................................................................................... II-11 Figure II-5 Views of the Project Site A (Views 1, 2 and 3) ............................................................. II-13 Figure II-6 Views of the Project Site B (Views 4, 5 and 6) ............................................................. II-15 Figure II-7 Views of Surrounding Uses A (Views 7, 8 and 9)......................................................... II-17 Figure II-8 Views of Surrounding Uses B (Views 10, 11 and 12)................................................... II-19 Figure II-9 Views of Surrounding Uses C (Views 13, 14 and 15)................................................... II-21 Figure II-10 Related Projects Map...................................................................................................... II-29 Figure III-1 Developed or Under Construction Area for Snowcreek Master Plan ............................III-5 Figure III-2 Proposed New Development Areas for 2007 Master Plan.............................................III-7 Figure III-3 Land Exchange Boundary .............................................................................................III-13 Figure III-4 Illustrative Conceptual Plan...........................................................................................III-17 Figure III-5 Market/General Store and the Natural Resources and Historic Interpretive Center....III-21 Figure III-6 Hotel Level One Floor Plan...........................................................................................III-24 Figure III-7 Low Density Units ........................................................................................................III-27 Figure III-8 Medium Density Multi-Family Units............................................................................III-29 Figure III-9 High Density Multi-Family Units .................................................................................III-31 Figure III-10 Outfitters’ Cabin ............................................................................................................III-35 Figure III-11 Resident’s Club and Management Offices....................................................................III-37 Figure IV.B-1 Major View Corridors and Vistas ...............................................................................IV.B-7 Figure IV.B-2 Viewpoint Location Map.............................................................................................IV.B-9 Figure IV.B-3 View 1, Old Mammoth Road & Minaret Road, Looking South ..............................IV.B-13 Figure IV.B-4 View 2, Old Mammoth Road & Sherwin Creek Road, Looking South...................IV.B-15 Figure IV.B-5 View 3, Minaret Road, Looking South .....................................................................IV.B-17 Figure IV.B-6 View 4, Sherwin Creek Road, Looking West...........................................................IV.B-19 Figure IV.B-7 View 5, U.S. Forest Service Land to the West of Sherwin Creek Road..................IV.B-23 Figure IV.B-8 View 6, Panorama Dome, Looking East...................................................................IV.B-25 Figure IV.B-9 View 1, Old Mammoth Road and Minaret Road with Project.................................IV.B-37 Figure IV.B-10 View 2, Old Mammoth Road & Sherwin Creek Road with Project ........................IV.B-39 Figure IV.B-11 View 3, Minaret Road with Project...........................................................................IV.B-41 Figure IV.B-12 View 4, Sherwin Creek Road, Looking West with Project ......................................IV.B-45 Figure IV.B-13 View 5, U.S. Forest Service Land to the West of Sherwin Creek Road with Project ........................................................................................................................IV.B-47 Figure IV.B-14 View 6, Panorama Dome with Project......................................................................IV.B-49

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Figure IV.D-1 Plant Communities.................................................................................................... IV.D-21 Figure IV.F-1 Regional Seismicity Map ............................................................................................ IV.F-5 Figure IV.G-1 On-Site Drainage – Residential/Commercial Site ..................................................... IV.G-5 Figure IV.G-2 Off-Site Drainage – Golf Course Area....................................................................... IV.G-6 Figure IV.G-3 100-Year Flood Limit ................................................................................................. IV.G-7 Figure IV.M-1 Study Area Intersections and Circulation System .....................................................IV.M-2 Figure IV.M-2 Study Area Intersections Geometrics and Control Devices ......................................IV.M-7 Figure IV.M-3 Existing Condition Typical Winter Saturday Peak Hour Traffic Volumes ..............IV.M-8 Figure IV.M-4 Approved Project Locations and Trip Assessment..................................................IV.M-10 Figure IV.M-5 Cumulative Baseline Typical Winter Saturday Peak Hour Traffic Volumes .........IV.M-11 Figure IV.M-6 Snowcreek Project Trip Distribution and Assignment ............................................IV.M-16 Figure IV.M-7 Existing Plus Project Typical Winter Saturday Peak Hour Traffic Volumes .........IV.M-17 Figure IV.M-8 Cumulative Plus Project Typical Winter Saturday Peak Hour Traffic Volumes....IV.M-19 Figure IV.N-1 Existing Water and Sewer Lines ................................................................................ IV.N-9 Figure VI-1 Alternative A: No Project Alternative 1981 Master Plan Buildout............................... VI-9 Figure VI-2 Alternative B: Revised Site Alternative Plan............................................................... VI-15 Figure VI-3 Alternative C: Reduced Density Alternative ............................................................... VI-23 Figure VI-4 Alternative D: Increased Density Alternative.............................................................. VI-29

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TABLES Table Page

Table I-1 Summary of Significant Impacts and Mitigation Measures ............................................ I-7 Table II-1 Related Projects .............................................................................................................. II-23 Table III-1 Development Areas of the 1975 and 1981 Master Plans................................................III-3 Table III-2 Proposed 2006 Master Plan .............................................................................................III-4 Table III-3 Proposed 2006 Master Plan Development Summary ...................................................III-15 Table IV.B-1 Consistency with 1987 General Plan Applicable Aesthetics Policies......................IV.B-27 Table IV.B-2 Consistency with 2007 General Plan Applicable Aesthetics Policies......................IV.B-31 Table IV.C-1 Global Warming Potentials and Atmospheric Lifetimes............................................IV.C-8 Table IV.C-2 Federal and State Ambient Air Quality Standards....................................................IV.C-16 Table IV.C-3 PM10 and PM25 Concentration in the Mammoth Lakes Region ...............................IV.C-18 Table IV.C-4 Ambient Air Quality Ozone and CO Standards and Monitoring Data Near the Project Area................................................................................................................IV.C-19 Table IV.C-5 Estimated Daily Construction Emissions..................................................................IV.C-23 Table IV.C-6 Estimated Mitigated Daily Construction Emissions.................................................IV.C-26 Table IV.C-7 Estimated Daily Operational Emissions....................................................................IV.C-29 Table IV.C-8 PM10 Emissions for the Town of Mammoth Lakes as Outlined in the AQMP .......IV.C-30 Table IV.C-9 Summary of Localized CO Analysis (1 hour) for the Project ..................................IV.C-32 Table IV.C-10 Summary of Localized CO Analysis (8-hour) for the Project..................................IV.C-35 Table IV.C-11 Carbon Dioxide Emissions ........................................................................................IV.C-34 Table IV.C-12 Methane Emissions....................................................................................................IV.C-35 Table IV.C-13 Nitrous Oxide Emissions ...........................................................................................IV.C-35 Table IV.C-14 Project Compliance with 2006 CAT Report Greenhouse Gas Emissions Reduction Strategies ..................................................................................................IV.C-37 Table IV.C-15 Net Emissions of PM10 from Snowcreek VIII ..........................................................IV.C-41 Table IV.D-1 Special Status Plant and Animal Species Evaluated for Potential to Occur in the Study Area ........................................................................................... IV.D-25 Table IV.F-1 Regional Faults and Seismicity ................................................................................... IV.F-4 Table IV.F-2 Seismic Design Parameters ....................................................................................... IV.F-11 Table IV.G-1 Designated Beneficial Uses of Mammoth Creek..................................................... IV.G-12 Table IV.H-1 Existing Land Use and Zoning On-Site ..................................................................... IV.H-3 Table IV.H-2 Comparison of Project Characteristics to Applicable Policies in the 1987 General Plan.............................................................................................................. IV.H-22 Table IV.H-3 Comparison of Project Characteristics to Applicable Policies in the 1987 General Plan.............................................................................................................. IV.H-42 Table IV.I-1 Representative Environmental Noise Levels ............................................................... IV.I-2

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Table IV.I-2 Reaction of People and Damage to Buildings at Various Continuous Vibration Levels ............................................................................................................................ IV.I-5 Table IV.I-3 Noise and Land Use Compatibility Criteria................................................................. IV.I-6 Table IV.I-4 Town of Mammoth Lakes Exterior Noise Limits........................................................ IV.I-8 Table IV.I-5 Town of Mammoth Lakes Construction Noise Standards ........................................ IV.I-10 Table IV.I-6 Existing (Winter 2005) Roadway Noise Levels Onsite............................................. IV.I-12 Table IV.I-7 Existing (Winter 2005) Roadway Noise Levels Offsite ............................................ IV.I-13 Table IV.I-8 Noise Ranges of Typical Construction Equipment.................................................... IV.I-16 Table IV.I-9 Typical Outdoor Construction Noise Levels ............................................................. IV.I-17 Table IV.I-10 Vibration Source Levels for Construction Equipment .............................................. IV.I-19 Table IV.I-11 Future Plus Project Roadway Noise Levels Onsite ................................................... IV.I-22 Table IV.I-12 Future Off-Site Future Roadway Noise Levels ......................................................... IV.I-23 Table IV.I-13 Cumulative Roadway Noise Levels ........................................................................... IV.I-27 Table IV.J-1 Housing Unit Growth Trends (1990-2024)..................................................................IV.J-1 Table IV.J-2 Mammoth Lakes Fair Share of Regional Housing Needs (2001-2008)......................IV.J-3 Table IV.J-3 Population Growth Trends (1970-2024) ......................................................................IV.J-4 Table IV.J-4 Employment by History 2000 ......................................................................................IV.J-5 Table IV.J-5 Estimated Employee Generation..................................................................................IV.J-7 Table IV.K-1 County of Mono California Crime Index (CCI), 2004-2005 .................................... IV.K-2 Table IV.K-2 Fire Stations that Serve the Project Area ................................................................... IV.K-6 Table IV.K-3 School Data for Project and Vicinity ....................................................................... IV.K-10 Table IV.K-4 Student Generation Rates for MUSD....................................................................... IV.K-12 Table IV.K-5 Park Areas Near the Project Site .............................................................................. IV.K-13 Table IV.L-1 Active and Planned Parkland Owned by or Available to the Town...........................IV.L-3 Table IV.L-2 Recreational Facilities in Mammoth Lakes ................................................................IV.L-4 Table IV.M-1 Intersection LOS Descriptions ...................................................................................IV.M-4 Table IV.M-2 Level of Service Parameters.......................................................................................IV.M-5 Table IV.M-3 Existing (2005) Typical Winter Saturday Intersection LOS .....................................IV.M-6 Table IV.M-4 Cumulative Typical Winter Saturday Intersection Levels of Service.......................IV.M-9 Table IV.M-5 Project Trip Generation ............................................................................................IV.M-14 Table IV.M-6 Existing Plus Project Typical Winter Saturday Intersection Levels of Service.......................................................................................................................IV.M-14 Table IV.M-7 Cumulative Plus Project Typical Winter Saturday Intersection Levels of Service.......................................................................................................................IV.M-20 Table IV.M-8 Long-Range Typical Winter Saturday Intersection Levels of Service....................IV.M-24 Table IV.N-1 Project Estimated Wastewater Demands ................................................................... IV.N-6 Table IV.N-2 Estimated Average Day and Peak Day Wastewater Generation for Project and Related Projects ................................................................................................. IV.N-11 Table IV.N-3 Existing Water Supply Reliability............................................................................ IV.N-17 Table IV.N-4 Annual Volumes of Groundwater Pumped.............................................................. IV.N-19

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Table IV.N-5 Past, Current, and Projected Water Use ................................................................... IV.N-21 Table IV.N-6 Current Supply and Demand Without Project ......................................................... IV.N-22 Table IV.N-7 Future Water Supplies .............................................................................................. IV.N-24 Table IV.N-8 Existing Water Supply Reliability Plus 2025 Future Water Sources...................... IV.N-25 Table IV.N-9 Project Estimated Water Demands........................................................................... IV.N-28 Table IV.N-10 Existing Water Supply Comparison of Current Supply and Demand With Project Plus Related Projects.................................................................................... IV.N-31 Table IV.N-11 2025 Future Water Sources Comparison of Supply and Demand With Project Plus Related Projects ................................................................................................ IV.N-32 Table VI-1 Alternatives Project Components Comparison.............................................................. VI-6 Table VI-2 Alternatives Impacts Comparison ................................................................................ VI-36

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I. INTRODUCTION/SUMMARY

A. INTRODUCTION

The purpose of the Introduction/Summary is to provide the reader with a clear and simple description of the Project and its potential significant environmental impacts. Section 15123 of the CEQA Guidelines requires that the summary identify each significant effect and recommended mitigation measures and alternatives that would minimize or avoid potential significant impacts. The summary is also required to identify areas of controversy known to the Lead Agency, including issues raised by agencies and the public, and issues to be resolved, including the choice among alternatives and whether or how to mitigate significant effects. This section focuses on the major areas of the Project that are important to decision-makers and uses non-technical language to promote understanding. This summary is intended as an overview and should be used in conjunction with a thorough reading of the Draft Environmental Impact Report (Draft EIR). The text of this report, including figures, tables, and appendices, serve as the basis for this summary.

The subject of this Draft EIR is the proposed Snowcreek VIII, Snowcreek Master Plan Update - 2007 Project (Project).1 Upon certification, this Draft EIR will update and supersede the Town of Mammoth Lakes’ 1974 and 1981 EIRs for the previous iterations of the Snowcreek Master Plan. A detailed description of the Project is contained in Section III (Project Description) of this report.

Because the Project will require approval of certain discretionary actions by the Town of Mammoth Lakes (Town), the Project is subject to the California Environmental Quality Act (CEQA), for which the Town is the designated Lead Agency. The Town’s Planning Division administers the process by which environmental documents for private projects are prepared and reviewed. On the basis of these procedures, it was determined that the Project may have a significant effect on the environment and that an EIR should be prepared.

B. PURPOSE OF THE EIR

The Town has commissioned this EIR on the Project for the following purposes:

• To satisfy CEQA requirements.

• To inform the general public, the local community, and responsible, trustee, and state and federal agencies of the nature of the Project, its potentially significant environmental effects, feasible

1 At the time the Notice of Preparation (NOP) was distributed on October 16, 2006, the Project was referred to as the 2006 Revised Snowcreek Master Plan. However, the Project has since been renamed to remain consistent with the current year.

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mitigation measures to mitigate those effects, and reasonable and feasible alternatives to the Project.

• To enable the Town to consider the environmental consequences of approving the Project.

• For consideration by responsible agencies in issuing permits and approvals for the Project.

As described in §15121 (a) and 15362 of the CEQA Guidelines, an EIR is an informational document that will inform public agency decision makers and the public of the significant environmental effects of a project, identify possible ways to minimize the significant effects, and describe reasonable alternatives to a project. The purpose of this EIR, therefore, is to focus the discussion on those potential effects on the environment of the Project that the Lead Agency has determined are or may be significant. In addition, feasible mitigation measures are required, when applicable, that could reduce significant impacts to insignificant levels.

The Lead Agency is required to consider the information in the EIR, along with any other relevant information, in making its decision on the Project. Although the EIR does not determine the ultimate decision that will be made regarding implementation of the Project, CEQA requires the Town to consider the information in the EIR and make findings regarding each significant effect of the Project.

This Draft EIR was prepared in accordance with §15151 of the CEQA Guidelines, which defines the standards for EIR adequacy:

An EIR should be prepared with a sufficient degree of analysis to provide decision makers with information which enables them to make a decision which intelligently takes account of environmental consequences. An evaluation of the environmental effects of a proposed project need not be exhaustive, but the sufficiency of an EIR is to be reviewed in the light of what is reasonably feasible. Disagreement among experts does not make an EIR inadequate, but the EIR would summarize the main points of disagreement among the experts. The courts have looked not for perfection; but for adequacy, completeness, and a good faith effort at full disclosure.

C. PROPOSED PROJECT

The Project consists of adoption by the Town of the Snowcreek VIII, Snowcreek Master Plan Update - 2007 (2007 Master Plan) to revise the Updated Master Plan for Snowcreek at Mammoth (1981 Master Plan), which was an update of the original Snowcreek Master Plan (1974 Master Plan). The 2007 Master Plan or Project addresses proposed build-out of the remaining Snowcreek Master Plan area (i.e., Snowcreek VIII) and is intended to fulfill the vision of the previously approved master plans.

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The Project proposes the development of 850 residential dwelling units, 400 Hotel rooms/suites, and up to 75,0002 square feet for non-residential uses on a total of approximately 237 acres. The following provides a brief account of these components:

• Residential: The residential component could include a mix of residential uses from condominium units, single family dwellings, stacked flats and townhomes that will vary in size from 650 square feet (minimum) to 3,500 square feet (maximum). A Resident’s Club with a snack bar, pool, spa and grill will accompany this component.

• Resort: The resort component will include 400 guest suites that will be part hotel, part Private Residence Club (PRC)/suite units or the like. The resort will also include retail space, a lounge, a fitness area, a pool, a spa/wellness center, and an ice skating pond.

• Recreation: While recreational amenities are incorporated throughout the Project, additional stand-alone recreational components will include a Golf Clubhouse, an expanded golf course and attendant facilities, and the Outfitters’ Cabin. The existing privately owned publicly accessible nine-hole golf course on the north and west portions of the Project site will be expanded to include nine additional holes on the east and south edges of the Project site, thus creating a privately owned publicly accessible 18-hole golf course.

• Retail: In addition to the retail space provided at the resort, a stand-alone Market/General Store (The Store) will be incorporated into the Project. The Store will serve the “Old Mammoth” portion of the Town with food, deli, drinks, and sundries. The Store draws inspiration from the historic Lutz Market during the early settlement days of Mammoth Camp.

• Public Amenities:3 In addition to public amenities provided in the expanded and enhanced golf course facilities, the Project will include amenities to enhance public recreational opportunities and support economic stability. These amenities will include a Natural Resources and Historic Interpretive Center (Interpretive Center), an Outfitters’ Cabin, and the provision of Hotel rooms/suites, restaurants, retail, and conference facilities.

D. AREAS OF KNOWN CONTROVERSIES

Section 15123 of the CEQA Guidelines requires an EIR to identify areas of controversy known to the Lead Agency, including issues raised by agencies and the public, and issues to be resolved.

2 This number has increased from 50,000 square feet since the Notice of Preparation (NOP) was distributed on October 16, 2006.

3 A propane tank farm while located on Snowcreek property is no longer part of the Project application and is treated as a related project for the purposes of analyzing cumulative impacts. The applicant for the propane tank farm is Turner Propane.

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Environmental concerns raised at the EIR scoping meeting and in letters submitted to the Town of Mammoth Lakes in response to the Notice of Preparation (NOP) of the EIR include:

• Biological impacts (native shrub habitat, songbird migration)

• Recreation impacts (public access to Kerry Meadow, loss of driving range, public golf course, location of Outfitter’s Cabin, access to the Sherwin Mountain Range)

• Transportation impacts (SR 203 including US 395/SR 203 Interchange)

• Land use

• Undiscovered archaeological and cultural resources

• Density

• Aesthetics (building heights and setbacks, blocked views)

• Increased traffic

• Water supply

• Watershed drainage

• Water flow and pressure requirements (associated with building heights)

• Water quality, low-impact development standards

• Emergency and evacuation plans

• Increased demand on public services

• Snow removal and storage

• Fire safety and increased service demand

E. ALTERNATIVES

This EIR considers a range of alternatives to the Project to provide informed decision-making in accordance with §15126(d) of the CEQA Guidelines. The alternatives analyzed in this EIR include: A) No Project (required by CEQA) – this would be buildout of the site under the existing entitlements and existing 1981 Master Plan, B) Revised Site Plan – same number of units but an alternate configuration designed to minimize impacts. C) Reduced Density – an approximate 50% reduction in residential units,

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D) Increased Density – “build-out of all remaining Snowcreek Master Plan units.4 For further discussion of these alternatives, see Section VI of this Draft EIR. Based on the analysis in Section VI, Alternative C (Reduced Density) was selected as the environmentally superior alternative.

F. SUMMARY OF ENVIRONMENTAL IMPACTS AND MITIGATION MEASURES

Table I-1 summarizes the various environmental impacts associated with the Project; includes the mitigation measures recommended to reduce or avoid the environmental impacts; and identifies the level of impact significance after mitigation.

4 The density bonus of 36.625 units would not apply to the Project and instead would remain with the Snowcreek Athletic Club property. Alternative D has been prepared to show the impacts of the Project without the density bonus.

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e an

d th

is im

pact

wou

ld b

e co

nsid

ered

sig

nific

ant

and

unav

oida

ble.

No

miti

gatio

n m

easu

res a

re a

vaila

ble.

Si

gnifi

cant

and

Una

void

able

Impa

ct A

ES-1

b C

onsis

tenc

y wi

th P

olic

ies (

2007

Gen

eral

Pla

n)

The

2007

Gen

eral

Pla

n se

ts fo

rth p

olic

ies

and

impl

emen

tatio

n m

easu

res

to

ensu

re th

e pr

eser

vatio

n of

the

visu

al re

sour

ces a

nd v

isual

cha

ract

er o

f the

Tow

n of

Mam

mot

h La

kes.

A c

onsis

tenc

y an

alys

is of

the

Pro

ject

with

app

licab

le

polic

ies

cont

aine

d w

ithin

the

prop

osed

Gen

eral

Pla

n w

as p

repa

red.

W

hile

the

2007

Gen

eral

Pla

n do

es n

ot e

xplic

itly

proh

ibit

a 12

0-fo

ot H

otel

, the

Tow

n’s

Mun

icip

al C

ode

does

. Whe

ther

the

Tow

n de

cide

s to

amen

d th

e zo

ning

cod

e an

d al

low

the

Hot

el t

o ha

ve i

ncre

ased

hei

ght

or n

ot, t

he P

roje

ct w

ould

cre

ate

an

impa

ct f

or w

hich

the

re a

re n

o m

itiga

tion

mea

sure

s av

aila

ble

and

this

impa

ct

wou

ld b

e sig

nific

ant a

nd u

navo

idab

le.

No

miti

gatio

n m

easu

res a

re a

vaila

ble.

Si

gnifi

cant

and

Una

void

able

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-8

SCH

# 2

0061

1201

5

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

Impa

ct A

ES-2

Pub

lic V

iews

and

Sce

nic

Vista

s

A t

otal

of

6 vi

ews

depi

ctin

g be

fore

and

afte

r th

e Pr

ojec

t is

cons

truct

ed w

ere

prep

ared

. Th

e lo

catio

ns fr

om w

hich

the

view

s wer

e ta

ken

are

as fo

llow

s:

Vie

w 1

: Old

Mam

mot

h Ro

ad a

nd M

inar

et R

oad

Look

ing

Sout

h

Vie

w 2

: Old

Mam

mot

h Ro

ad a

nd S

herw

in C

reek

Roa

d Lo

okin

g So

uth

Vie

w 3

: M

inar

et R

oad

Look

ing

Sout

h

Vie

w 4

: Sh

erw

in C

reek

Roa

d Lo

okin

g W

est

Vie

w 5

: U

.S. F

ores

t Ser

vice

Lan

ds to

the

Wes

t of S

herw

in C

reek

Roa

d

Vie

w 6

: Pa

nora

ma

Dom

e Tr

ail L

ooki

ng E

ast

The

Proj

ect w

ould

not

obs

cure

vie

ws o

f the

She

rwin

Ran

ge fr

om V

iew

s 2 a

nd 3

. V

iew

s of

the

She

rwin

Ran

ge f

rom

Vie

ws

1, 4

, 5,

and

6 w

ould

be

sligh

tly

obsc

ured

. H

owev

er, t

he P

roje

ct w

ould

res

ult i

n su

bsta

ntia

l cha

nges

to v

isual

ch

arac

ter o

n th

e Pr

ojec

t site

with

in th

e vi

ewsh

ed, r

esul

ting

in im

pact

s to

vie

ws.

N

o m

itiga

tion

mea

sure

s are

ava

ilabl

e to

fully

miti

gate

such

impa

cts.

The

refo

re,

impa

cts t

o vi

ews w

ould

be

signi

fican

t and

una

void

able

.

No

miti

gatio

n m

easu

res a

re a

vaila

ble.

Si

gnifi

cant

and

Una

void

able

Impa

ct A

ES-

3 S

ceni

c R

esou

rces

with

in a

Sta

te S

ceni

c H

ighw

ay

In t

he v

icin

ity o

f th

e To

wn

of M

amm

oth

Lake

s, St

ate

Hig

hway

203

(M

ain

Stre

et) i

s an

elig

ible

Sta

te S

ceni

c H

ighw

ay (n

ot o

ffici

ally

des

igna

ted)

and

U.S

. H

ighw

ay 3

95 i

s an

offi

cial

ly d

esig

nate

d St

ate

Scen

ic H

ighw

ay.

Im

pact

s to

sc

enic

res

ourc

es o

bser

vabl

e fro

m a

Sta

te S

ceni

c H

ighw

ay w

ould

be

less

than

sig

nific

ant w

ith th

e de

velo

pmen

t of t

he P

roje

ct.

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Impa

ct A

ES-

4 V

isual

Cha

ract

er a

nd D

esig

n

The

Proj

ect w

ould

be

desig

ned

to c

ompl

emen

t the

exi

sting

alp

ine

arch

itect

ural

ch

arac

ter o

f nea

rby

deve

lopm

ent a

nd e

lsew

here

with

in th

e To

wn

of M

amm

oth

Lake

s. T

he T

own

wou

ld r

evie

w a

ll fin

al b

uild

ing

desig

ns to

ens

ure

that

the

No

miti

gatio

n m

easu

res a

re a

vaila

ble.

Si

gnifi

cant

and

Una

void

able

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-9

SCH

# 2

0061

1201

5

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

Proj

ect

wou

ld b

e re

spon

sive

to,

and

expr

essiv

e of

, its

uni

que

alpi

ne s

ettin

g.

How

ever

, th

e Pr

ojec

t w

ould

rep

rese

nt a

sub

stant

ial

chan

ge i

n th

e vi

sual

ch

arac

ter

of t

he P

roje

ct s

ite b

y co

nstru

ctin

g ho

usin

g an

d re

sort

uses

on

a fo

rmer

ly u

ndev

elop

ed m

eado

w.

This

chan

ge in

cha

ract

er w

ould

be

signi

fican

t.

The

Tow

n Co

de a

lread

y re

quire

s th

e Pr

ojec

t to

unde

rgo

desig

n re

view

whi

ch

will

rev

iew

the

loc

atio

n of

bui

ldin

gs, b

ulk

and

mas

sing,

mat

eria

ls an

d co

lors

w

ith t

he g

oal

of f

urth

erin

g ge

nera

l pl

an p

olic

ies

and

redu

cing

the

aes

thet

ic

impa

cts

of th

e Pr

ojec

t. T

here

are

no

miti

gatio

n m

easu

res

avai

labl

e th

at w

ould

re

duce

this

impa

ct; t

here

fore

this

impa

ct is

sign

ifica

nt a

nd u

navo

idab

le.

Impa

ct A

ES-

5 S

igna

ge

Miti

gatio

n M

easu

re A

ES-

5

The

Proj

ect w

ould

pro

vide

sig

nage

that

is d

esig

ned

to b

e cl

ear,

unde

rsta

ndab

le

and

attra

ctiv

e to

bot

h th

e ve

hicu

lar a

nd p

edes

trian

vie

wer

. Th

e sig

nage

wou

ld

refle

ct th

e m

ount

ain

retre

at c

omm

unity

cha

ract

er o

f th

e Pr

ojec

t with

reg

ard

to

mat

eria

ls, fo

rm a

nd u

se.

Sign

age

wou

ld in

form

and

dire

ct, b

ut in

a m

anne

r and

sty

le w

hich

is

inte

nded

to

crea

te a

mem

orab

le i

mpr

essio

n an

d sh

ow a

co

nnec

tion

to n

atur

e, a

rchi

tect

ure

and

the

histo

ric p

ast.

Sig

nage

wou

ld l

ink

toge

ther

the

ent

ire r

esor

t, cl

ubs,

and

resid

entia

l co

mpo

nent

s, an

d cu

ltiva

te a

n in

clus

ive

rela

tions

hip

thro

ugho

ut th

e Pr

ojec

t site

. C

ompl

ianc

e w

ith M

itiga

tion

Mea

sure

AES

-5 w

ould

ens

ure

that

impa

cts r

elat

ed to

sign

age

wou

ld b

e le

ss th

an

signi

fican

t.

Prio

r to

the

issua

nce

of b

uild

ing

perm

its, a

ll bu

ildin

gs c

onta

inin

g th

ree

or m

ore

sepa

rate

bu

sines

ses

shal

l pr

epar

e a

Mas

ter

Sign

Pla

n, i

n ac

cord

ance

with

the

Mam

mot

h La

kes

Mun

icip

al C

ode

Chap

ter 1

7.34

and

17.

40.

Less

Tha

n Si

gnifi

cant

Impa

ct A

ES-

6 L

ight

and

Gla

re

Miti

gatio

n M

easu

re A

ES-

6

Alth

ough

the

Proj

ect w

ould

be

requ

ired

to im

plem

ent a

nd b

e co

nsist

ent w

ith a

ll To

wn

ordi

nanc

es re

late

d to

out

door

ligh

ting,

the

intro

duct

ion

of li

ght a

nd g

lare

on

a fo

rmer

ly u

ndev

elop

ed m

eado

w w

ould

cre

ate

a ne

w s

ourc

e of

ligh

t or g

lare

th

at w

ould

be

notic

eabl

e an

d w

ould

exp

and

the

exist

ing

lit f

ootp

rint

of t

he

Tow

n. P

roje

ct li

ghtin

g w

ould

alte

r nig

httim

e vi

ews

from

Vie

ws

1, 2

, 4, 5

, and

6.

Th

is w

ould

be

a sig

nific

ant i

mpa

ct.

Alth

ough

com

plia

nce

with

Miti

gatio

n

Prio

r to

occ

upan

cy,

all

light

ing

on t

he P

roje

ct s

ite s

hall

com

ply

with

the

app

licab

le

requ

irem

ents

of th

e To

wn

of M

amm

oth

Lake

s Out

door

Lig

htin

g O

rdin

ance

, in

acco

rdan

ce

with

Mam

mot

h La

kes M

unic

ipal

Cod

e Ch

apte

r 17.

34.

Sign

ifica

nt a

nd U

navo

idab

le

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-10

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

Mea

sure

AES

-6 is

requ

ired,

suc

h co

mpl

ianc

e w

ould

not

redu

ce th

is im

pact

to a

le

ss t

han

signi

fican

t le

vel.

The

refo

re,

this

impa

ct w

ould

be

signi

fican

t an

d un

avoi

dabl

e.

Impa

ct A

ES-8

Cum

ulat

ive

Impa

cts

Ther

e ar

e 41

rela

ted

proj

ects

in th

e vi

cini

ty o

f the

Pro

ject

. Re

late

d pr

ojec

ts th

at

are

clos

e en

ough

to

the

Proj

ect

site

have

a d

irect

cum

ulat

ive

visu

al q

ualit

y im

pact

in c

ombi

natio

n w

ith th

e Pr

ojec

t. T

hese

rela

ted

proj

ects

are

loca

ted

alon

g O

ld M

amm

oth

Road

in th

e vi

cini

ty o

f the

Pro

ject

site

.

As

desc

ribed

in th

is se

ctio

n, th

e Pr

ojec

t, al

thou

gh c

onsis

tent

in c

hara

cter

with

su

rroun

ding

dev

elop

men

t, w

ould

res

ult

in s

igni

fican

t im

pact

s to

the

visu

al

char

acte

r of

the

Pro

ject

site

and

vie

ws

of t

he S

herw

in R

ange

. E

ach

of t

he

rela

ted

proj

ects

prop

osed

for t

he P

roje

ct v

icin

ity w

ould

be

requ

ired

to c

onfo

rm

to T

own

deve

lopm

ent

regu

latio

ns a

nd b

e re

view

ed a

gain

st To

wn

desig

n gu

idel

ines

prio

r to

fin

al a

ppro

val.

How

ever

, de

velo

pmen

t of

the

Pro

ject

in

asso

ciat

ion

with

thes

e re

late

d pr

ojec

ts w

ould

resu

lt in

a g

radu

al in

fill o

f exi

sting

de

velo

pmen

t in

this

sect

or o

f the

Tow

n, w

hich

wou

ld re

sult

in c

hang

es in

visu

al

char

acte

r in

the

area

. Th

eref

ore,

the

Proj

ect c

ombi

ned

with

the

rela

ted

proj

ects

wou

ld r

esul

t in

a c

umul

ativ

e im

pact

to

view

s an

d th

e vi

sual

cha

ract

er o

f th

e To

wn.

As a

resu

lt, c

umul

ativ

e im

pact

s with

resp

ect t

o sc

enic

vie

ws a

nd e

xisti

ng

visu

al c

hara

cter

wou

ld b

e co

nsid

ered

sig

nific

ant a

nd th

e Pr

ojec

t’s in

crem

enta

l co

ntrib

utio

n to

cum

ulat

ive

impa

cts w

ould

be

signi

fican

t.

No

miti

gatio

n m

easu

res a

re a

vaila

ble.

Si

gnifi

cant

and

Una

void

able

AIR

QU

AL

ITY

(AQ

)

Impa

ct A

Q-1

Con

struc

tion

Impa

cts

Miti

gatio

n M

easu

re A

Q-1

Fore

seea

ble

cons

truct

ion

activ

ities

fo

r th

e Pr

ojec

t w

ould

in

clud

e sit

e pr

epar

atio

n, g

radi

ng, p

lace

men

t of

utili

ties

and

othe

r in

frastr

uctu

re, p

lace

men

t of

foun

datio

ns f

or s

truct

ures

, rem

oval

of e

xisti

ng s

truct

ures

, and

fabr

icat

ion

of

The

Proj

ect

appl

ican

t sh

all

requ

ire t

hat

the

follo

win

g pr

actic

es b

e im

plem

ente

d by

in

clud

ing

them

in

the

cont

ract

or c

onstr

uctio

n do

cum

ents

to r

educ

e th

e em

issio

ns o

f po

lluta

nts g

ener

ated

by

heav

y-du

ty d

iese

l-pow

ered

equ

ipm

ent o

pera

ting

at th

e Pr

ojec

t site

Sign

ifica

nt a

nd U

navo

idab

le

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-11

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

struc

ture

s ac

ross

the

entir

e ap

prox

imat

ely

237-

acre

Pro

ject

are

a.

The

Proj

ect

has b

een

orga

nize

d so

that

it c

ould

be

deve

lope

d in

seve

ral p

hase

s, w

ith th

e go

lf co

urse

exp

ansio

n an

d H

otel

con

struc

tion

occu

rring

in

the

first

phas

es a

nd

vario

us r

esid

entia

l co

mpo

nent

s be

ing

prog

ress

ivel

y co

nstru

cted

at

a pa

ce

dict

ated

by

mar

ket

cond

ition

s. E

ach

phas

e w

ould

ope

rate

suc

cess

fully

as

a co

mpl

ete

entit

y th

roug

hout

the

ent

ire d

evel

opm

ent.

All

stagi

ng w

ould

occ

ur

with

in

the

Proj

ect

boun

darie

s.

Mos

t co

nstru

ctio

n ph

ases

w

ould

la

st ap

prox

imat

ely

18 to

24

mon

ths

but s

ome

may

be

as lo

ng a

s 24

to 3

0 m

onth

s.

Som

e ph

ases

may

be

unde

r con

struc

tion

simul

tane

ously

. Co

nstru

ctio

n ac

tiviti

es

are

prop

osed

to b

e co

mpl

ete

in 2

017.

Due

to

the

cons

truct

ion

time

fram

e an

d th

e no

rmal

day

-to-d

ay v

aria

bilit

y in

co

nstru

ctio

n ac

tiviti

es, i

t is

diffi

cult

to p

reci

sely

qua

ntify

the

dai

ly e

miss

ions

as

soci

ated

with

eac

h ph

ase

of th

e pr

opos

ed c

onstr

uctio

n ac

tiviti

es.

Non

ethe

less

, da

ily e

miss

ions

tha

t ar

e es

timat

ed t

o oc

cur

on p

eak

cons

truct

ion

days

was

es

tabl

ished

. H

owev

er, t

he G

reat

Val

ley

Basin

Uni

fied

Air

Pollu

tion

Con

trol

Dist

rict

does

not

cur

rent

ly h

ave

thre

shol

ds f

or d

eter

min

ing

the

leve

l of

sig

nific

ance

for a

ir em

issio

ns.

In th

e ab

senc

e of

such

thre

shol

ds, a

ny e

miss

ions

th

at

may

re

sult

in

a vi

olat

ion

of

an

air

qual

ity

stand

ard

or

cont

ribut

e su

bsta

ntia

lly to

an

exist

ing

air

qual

ity v

iola

tion

will

be

cons

ider

ed s

igni

fican

t.

Sinc

e re

spira

ble

parti

cula

te m

atte

r (P

M10

) is

clas

sifie

d as

non

-atta

inm

ent,

any

PM10

em

issio

ns w

ill c

ontri

bute

sub

stant

ially

to a

n ex

istin

g ai

r qua

lity

viol

atio

n.

Ther

efor

e, u

nles

s PM

10 e

miss

ions

are

red

uced

by

impl

emen

tatio

n of

fea

sible

co

ntro

l m

easu

res,

impa

cts

caus

ed b

y th

ese

emiss

ions

wou

ld b

e co

nsid

ered

sig

nific

ant.

Ev

en

with

im

plem

enta

tion

of

the

reco

mm

ende

d m

itiga

tion

mea

sure

s ou

tline

d, d

evel

opm

ent o

f th

e Pr

ojec

t wou

ld c

ontin

ue to

res

ult i

n th

e ge

nera

tion

of p

ollu

tant

em

issio

ns.

In

addi

tion,

PM

10 e

miss

ions

can

not

be

redu

ced

to z

ero

with

the

im

plem

enta

tion

of t

he r

ecom

men

ded

miti

gatio

n m

easu

res.

The

refo

re, t

he P

roje

ct w

ould

con

tinue

to r

esul

t in

a sig

nific

ant a

nd

unav

oida

ble

impa

ct w

ith re

gard

to P

M10

em

issio

ns.

thro

ugho

ut th

e Pr

ojec

t con

struc

tion

phas

es:

a.

Wat

er a

ll co

nstru

ctio

n ar

eas a

t lea

st tw

ice

daily

; wat

er tr

ucks

will

be

fille

d lo

cally

af

ter t

he c

ontra

ctor

mak

es w

ater

acq

uisit

ion

agre

emen

ts an

d ob

tain

s any

requ

ired

perm

its.

b.

Cove

r all

truck

s hau

ling

soil,

sand

, and

oth

er lo

ose

mat

eria

ls;

c.

App

ly c

lean

gra

vel,

wat

er,

or n

on-to

xic

soil

stabi

lizer

s on

all

unpa

ved

acce

ss

road

s, pa

rkin

g ar

eas a

nd st

agin

g ar

eas a

t con

struc

tion

sites

;

d.

Rem

ove

exce

ss s

oils

from

pav

ed a

cces

s roa

ds, p

arki

ng a

reas

and

sta

ging

are

as a

t co

nstru

ctio

n sit

es;

e.

Swee

p str

eets

daily

(with

mec

hani

cal s

wee

pers

) if v

isibl

e so

il m

ater

ial i

s ca

rried

on

to a

djac

ent p

ublic

stre

ets;

f. H

ydro

seed

or

appl

y no

n-to

xic

soil

stabi

lizer

s to

ina

ctiv

e co

nstru

ctio

n ar

eas

(pre

viou

sly g

rade

d ar

eas i

nact

ive

for t

en d

ays o

r mor

e);

g.

Encl

ose,

cov

er,

wat

er t

wic

e da

ily,

or a

pply

non

-toxi

c so

il bi

nder

s to

exp

osed

sto

ckpi

les (

dirt,

sand

, etc

.);

h.

Lim

it tra

ffic

spee

ds o

n un

pave

d ro

ads t

o 15

mile

s per

hou

r;

i. In

stall

grav

el-b

ags,

cobb

le e

ntrie

s, or

oth

er B

est M

anag

emen

t Pra

ctic

es (B

MPs

) an

d er

osio

n co

ntro

l mea

sure

s to

prev

ent s

ilt ru

noff

to p

ublic

road

way

s;

j. Re

plan

t veg

etat

ion

in d

istur

bed

area

s as s

oon

as p

ossib

le;

k.

Insta

ll w

heel

was

hers

for

all

exiti

ng tr

ucks

or

was

h of

f th

e tir

es o

r tra

cks

of a

ll tru

cks a

nd e

quip

men

t lea

ving

the

cons

truct

ion

site;

l. Su

spen

d ex

cava

tion

and

grad

ing

activ

ities

whe

n w

ind

(as

insta

ntan

eous

gus

ts)

exce

eds

50 m

iles

per

hour

(m

ph)

and

whe

n su

stain

ed w

inds

exc

eed

25 m

ph

incr

ease

the

frequ

ency

of

wat

erin

g fro

m tw

ice

daily

, as

desc

ribed

in M

itiga

tion

Mea

sure

AQ

-1a

abov

e, to

thre

e to

four

tim

es a

day

;

m.

The

cons

truct

ion

fleet

will

mee

t th

e te

rms

set

forth

in

the

CARB

Pro

pose

d

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-12

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

Regu

latio

n fo

r in

-use

Off

Road

Die

sel

Veh

icle

s, pa

ragr

aph

(d)(3

) Id

ling.

Th

e pr

opos

ed re

gula

tion

impl

emen

tatio

n da

te is

May

1, 2

008.

n.

Lim

it th

e ho

urs

of o

pera

tion

of h

eavy

dut

y eq

uipm

ent

and/

or t

he a

mou

nt o

f eq

uipm

ent i

n us

e;

o.

All

equi

pmen

t sh

all

be p

rope

rly t

uned

and

mai

ntai

ned

in a

ccor

danc

e w

ith t

he

man

ufac

ture

r’s sp

ecifi

catio

ns;

p.

Whe

n fe

asib

le, a

ltern

ativ

e fu

eled

or

elec

trica

l co

nstru

ctio

n eq

uipm

ent

shal

l be

us

ed fo

r the

Pro

ject

site

;

q.

Use

the

min

imum

pra

ctic

al e

ngin

e siz

e fo

r con

struc

tion

equi

pmen

t;

r. G

asol

ine-

pow

ered

equ

ipm

ent s

hall

be e

quip

ped

with

cat

alyt

ic c

onve

rters

, whe

re

feas

ible

; and

Impa

ct A

Q-2

Ope

ratio

nal E

miss

ions

M

itiga

tion

Mea

sure

AQ

-2

Acc

ordi

ng to

the

Air

Qua

lity

Man

agem

ent P

lan,

par

ticul

ate

mat

ter

that

cau

ses

PM10

vio

latio

ns c

onsis

ts pr

imar

ily o

f roa

d du

st an

d so

ot fr

om w

ood

com

busti

on.

In o

ther

wor

ds, t

ailp

ipe

emiss

ions

fro

m h

eavy

-dut

y di

esel

eng

ines

con

stitu

te a

m

inor

or

negl

igib

le c

ompo

nent

of

PM10

impa

cts

in th

e M

amm

oth

Lake

s ar

ea.

An

anal

ysis

of d

aily

ope

ratio

nal

emiss

ions

has

bee

n pr

epar

ed u

tiliz

ing

the

URB

EMIS

200

2 co

mpu

ter m

odel

. A

s di

scus

sed

prev

ious

ly, t

he P

roje

ct w

ould

be

div

ided

into

fou

r ph

ases

. Th

e op

erat

iona

l em

issio

ns f

rom

Pha

se I

and

the

cons

truct

ion

emiss

ions

from

Pha

se II

hav

e be

en c

ombi

ned.

As C

O, N

Ox,

RO

C,

and

SOx

are

clas

sifie

d as

in a

ttain

men

t, th

e em

issio

ns o

f the

se p

ollu

tant

s w

ould

co

nstit

ute

less

-than

-sig

nific

ant i

mpa

cts.

The

tota

l PM

10 e

miss

ions

ant

icip

ated

as

a re

sult

of th

e Pr

ojec

t at i

ts co

mpl

etio

n is

422,

193

gram

s pe

r day

. A

s a

resu

lt,

parti

cula

te e

miss

ions

gen

erat

ed b

y w

ood

com

busti

on fr

om th

e Pr

ojec

t wou

ld n

ot

cont

ribut

e to

Fed

eral

and

Sta

te P

M10

vio

latio

ns.

Sinc

e th

e A

QM

P th

resh

olds

of

106,

600

Veh

icle

s M

iles

Trav

eled

(V

MT)

per

day

and

one

EPA

II

solid

-fuel

bu

rnin

g ap

plia

nces

per

res

iden

tial

unit

are

only

mea

nt t

o ad

dres

s cu

mul

ativ

e

The

Proj

ect a

pplic

ant s

hall

requ

ire th

e fo

llow

ing

impl

emen

tatio

n m

easu

res t

o re

duce

PM

10

oper

atio

nal e

miss

ions

resu

lting

from

the

Proj

ect t

o a

less

than

sign

ifica

nt le

vel:

a.

The

Proj

ect

shal

l in

clud

e a

trans

porta

tion

dem

and

man

agem

ent

prog

ram

to

redu

ce

over

all

vehi

cle

mile

s tra

vele

d (V

MTs

), in

or

der

to

dem

onstr

ate

com

plia

nce

with

the

Fede

ral P

M10

sta

ndar

d of

150

mic

rogr

ams

per c

ubic

met

er

(µg/

m.3

) T

he p

rogr

am s

hall

incl

ude,

but

not

be

limite

d to

, circ

ulat

ion

syste

m

impr

ovem

ents,

shut

tles t

o an

d fro

m p

arki

ng a

reas

, and

the

loca

tion

of fa

cilit

ies t

o en

cour

age

pede

stria

n ci

rcul

atio

n.

b.

The

Proj

ect

shal

l be

lin

ked

to e

xisti

ng d

evel

oped

are

as t

hrou

gh e

xisti

ng r

oad

netw

orks

, pub

lic tr

ansit

sys

tem

s, op

en s

pace

sys

tem

s, an

d bi

cycl

e an

d pe

destr

ian

syste

ms.

c.

The

Proj

ect s

hall

impl

emen

t trip

redu

ctio

n m

easu

res p

artic

ular

ly d

urin

g PM

pea

k tra

ffic

hour

s to

disp

erse

trip

s be

twee

n pa

rkin

g ar

eas

and

mou

ntai

n po

rtals

to a

nd

from

the

ski a

rea.

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-13

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

impa

cts,

oper

atio

nal

impa

cts

from

PM

10 e

miss

ions

will

be

addr

esse

d in

the

cu

mul

ativ

e im

pact

s sec

tion

belo

w.

d.

Resid

entia

l con

dom

iniu

m u

nits

shal

l ent

er in

to a

tran

sit f

ee a

gree

men

t with

the

Tow

n co

nsist

ent w

ith th

e To

wn’

s esta

blish

ed T

rans

it Fe

e A

gree

men

t Pro

gram

.

e.

No

solid

fuel

bur

ning

app

lianc

es sh

all b

e pe

rmitt

ed w

ithin

resid

entia

l uni

ts w

ithin

m

ulti-

fam

ily re

siden

tial d

evel

opm

ents.

Impa

ct A

Q-3

Loc

al C

O C

once

ntra

tions

Traf

fic-c

onge

sted

road

way

s an

d in

ters

ectio

ns h

ave

the

pote

ntia

l to

gen

erat

e lo

caliz

ed h

igh

leve

ls of

car

bon

mon

oxid

e (C

O).

By

gene

ratin

g ad

ditio

nal

traffi

c, th

e Pr

ojec

t cou

ld p

oten

tially

cau

se e

xcee

danc

es o

f the

1-h

our o

r 8-h

our

Fede

ral

or S

tate

CO

sta

ndar

ds.

Base

d on

the

CA

LIN

E4 c

ompu

ter-m

odel

ing

resu

lts, l

ocal

CO

con

cent

ratio

ns w

ould

not

exc

eed

state

or n

atio

nal a

mbi

ent a

ir qu

ality

sta

ndar

ds.

The

refo

re,

emiss

ions

of

CO a

ssoc

iate

d w

ith t

he P

roje

ct

wou

ld re

sult

in a

less

-than

-sig

nific

ant C

O a

ir qu

ality

impa

ct.

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Impa

ct A

Q-4

Gre

enho

use

Gas

Em

issio

ns

Parts

of

the

Earth

’s a

tmos

pher

e ac

t as

an

insu

latin

g bl

anke

t of

jus

t th

e rig

ht

thic

knes

s, tra

ppin

g su

ffici

ent

sola

r en

ergy

to

ke

ep

the

glob

al

aver

age

tem

pera

ture

in a

suita

ble

rang

e. T

he b

lank

et is

a c

olle

ctio

n of

atm

osph

eric

gas

es

calle

d gr

eenh

ouse

gas

es (G

HG

) bas

ed o

n th

e id

ea th

at th

e ga

ses

also

trap

hea

t lik

e th

e gl

ass

wal

ls of

a g

reen

hous

e. t

he P

roje

ct c

ompl

ies

with

all

feas

ible

and

ap

plic

able

mea

sure

s to

brin

g C

alifo

rnia

to

the

emiss

ion

redu

ctio

n ta

rget

s.

How

ever

, as

no th

resh

olds

of

signi

fican

ce p

erta

inin

g to

GH

G e

miss

ions

hav

e be

en a

dopt

ed b

y th

e To

wn

or e

stabl

ished

by

the

Stat

e, n

o de

term

inat

ion

on th

e sig

nific

ance

of t

his i

mpa

ct h

as b

een

mad

e.

No

miti

gatio

n m

easu

res a

pply

. N

o de

term

inat

ion

on th

e sig

nific

ance

of t

his i

mpa

ct

has b

een

mad

e.

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-14

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

Impa

ct A

Q-5

Odo

rs

Cons

truct

ion

activ

ities

cou

ld g

ener

ate

airb

orne

odo

rs a

ssoc

iate

d w

ith t

he

oper

atio

n of

con

struc

tion

vehi

cles

(e.

g., d

iese

l exh

aust)

and

the

appl

icat

ion

of

arch

itect

ural

coa

tings

. H

owev

er, t

hese

em

issio

ns w

ould

occ

ur d

urin

g da

ytim

e ho

urs o

nly

for l

imite

d pe

riods

and

wou

ld b

e re

stric

ted

to th

e im

med

iate

vic

inity

of

the

con

struc

tion

site

and

activ

ity.

The

win

d w

ould

also

ten

d to

disp

erse

od

ors,

and

such

act

iviti

es w

ould

not

affe

ct a

sub

stant

ial n

umbe

r of

peo

ple

and

wou

ld re

sult

in a

less

than

sign

ifica

nt im

pact

.

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Impa

ct A

Q-5

Cum

ulat

ive

Impa

cts

Miti

gatio

n M

easu

re A

Q-5

The

Gre

at B

asin

Uni

fied

Air

Pollu

tion

Cont

rol D

istric

t (G

BUA

PCD

or D

istric

t) do

es n

ot h

ave

num

eric

al t

hres

hold

s to

det

erm

ine

whe

ther

the

Pro

ject

wou

ld

resu

lt in

a c

umul

ativ

ely

cons

ider

able

net

inc

reas

e of

PM

10 o

r 0 3

pre

curs

ors.

H

owev

er, a

s di

scus

sed

abov

e, 0

3 im

pact

s ar

e pr

imar

ily th

e re

sult

of p

ollu

tion

gene

rate

d in

the

San

Joa

quin

Val

ley.

Th

us,

the

cum

ulat

ive

incr

ease

of

0 3

prec

urso

r em

issio

ns a

s a

resu

lt of

con

struc

tion

and

oper

atio

n of

the

prop

osed

an

d re

late

d pr

ojec

ts w

ould

not

subs

tant

ially

con

tribu

te to

the

exce

edan

ces o

f the

St

ate

0 3 st

anda

rd a

nd, t

hus,

wou

ld n

ot b

e cu

mul

ativ

ely

cons

ider

able

.

Acc

ordi

ng t

o th

e To

wn’

s G

ener

al P

lan

Upd

ate

EIR,

the

inc

reas

es i

n PM

10

emiss

ions

ass

ocia

ted

with

bot

h co

nstru

ctio

n an

d op

erat

ion

of th

e pr

opos

ed a

nd

rela

ted

proj

ects

wou

ld b

e co

nsid

ered

cum

ulat

ivel

y co

nsid

erab

le e

ven

with

out

deve

lopm

ent o

f the

Pro

ject

. Si

nce

the

Proj

ect’s

con

struc

tion

impa

ct w

ith re

gard

to

PM

10 e

miss

ions

wou

ld r

emai

n sig

nific

ant

and

unav

oida

ble,

the

Pro

ject

’s

cum

ulat

ive

cons

truct

ion

impa

ct o

n ai

r qu

ality

wou

ld a

lso b

e co

nsid

ered

sig

nific

ant a

nd u

navo

idab

le.

The

Proj

ect

is co

nsist

ent

with

the

AQ

MP

for

the

Tow

n of

Mam

mot

h La

kes.

Th

eref

ore,

cum

ulat

ive

oper

atio

nal

impa

cts

for

the

Proj

ect

wou

ld b

e le

ss t

han

signi

fican

t.

No

miti

gatio

n m

easu

res

are

requ

ired

for

cum

ulat

ive

oper

atio

nal

impa

cts

as c

umul

ativ

e op

erat

iona

l im

pact

s wer

e de

term

ined

to b

e le

ss th

an si

gnifi

cant

.

No

miti

gatio

n m

easu

res

are

avai

labl

e fo

r cu

mul

ativ

e co

nstru

ctio

n im

pact

s fo

r PM

10

emiss

ions

.

Sign

ifica

nt a

nd U

navo

idab

le

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-15

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

BIO

LOG

ICA

L R

ESO

UR

CES

(BIO

)

Impa

ct B

IO-1

a S

peci

al S

tatu

s Spe

cies

M

itiga

tion

Mea

sure

s BIO

-1a

thro

ugh

1g

Plan

ts

Thirt

y-fiv

e sp

ecia

l-sta

tus p

lant

s wer

e ev

alua

ted

for t

heir

pote

ntia

l for

occ

urre

nce

in th

e stu

dy a

rea,

ten

of w

hich

wer

e de

term

ined

to h

ave

“med

ium

” or

“hi

gh”

pote

ntia

l for

occ

urre

nce.

Im

plem

enta

tion

of m

itiga

tion

mea

sure

s rec

omm

ende

d un

der

“Im

pact

BIO

-2: S

ensit

ive

Nat

ural

Com

mun

ities

” w

ould

also

ens

ure

that

sp

ecia

l-sta

tus

plan

ts sp

ecie

s po

tent

ially

occ

urrin

g w

ithin

the

open

spa

ce w

ould

no

t be

inad

verte

ntly

impa

cted

.

The

one

rem

aini

ng s

peci

al-s

tatu

s pl

ant s

peci

es (

Mas

onic

roc

k cr

ess)

cou

ld b

e sig

nific

antly

impa

cted

by

the

Proj

ect.

Pro

ject

con

struc

tion

wou

ld r

esul

t in

the

rem

oval

of

the

maj

ority

, if

not

all,

of t

he b

asin

sag

ebru

sh p

rese

nt i

n th

e de

velo

pmen

t ar

ea.

Thi

s co

uld

resu

lt in

pot

entia

lly s

igni

fican

t im

pact

s to

M

ason

ic ro

ck c

ress

, if p

rese

nt.

Impl

emen

tatio

n of

Miti

gatio

n M

easu

re B

IO-1

a w

ould

redu

ce p

oten

tial i

mpa

cts t

o th

ese

spec

ies t

o a

less

-than

-sig

nific

ant l

evel

.

Ani

mal

s

Of t

he 3

3 sp

ecia

l-sta

tus a

nim

al sp

ecie

s eva

luat

ed fo

r pot

entia

l occ

urre

nce

in th

e stu

dy a

rea,

six

wer

e de

term

ined

to

have

“m

ediu

m”

or “

high

” po

tent

ial

for

occu

rrenc

e.

Impa

cts

of t

he P

roje

ct o

n ea

ch o

f th

ese

anim

al s

peci

es a

re

addr

esse

d be

low

.

Am

phib

ians

and

Rep

tiles

Proj

ect

cons

truct

ion

coul

d re

sult

in p

oten

tially

sig

nific

ant

impa

cts

to t

he

Yos

emite

toa

d.

If pr

esen

t, co

nstru

ctio

n-re

late

d ac

tiviti

es w

ould

res

ult

in

tem

pora

ry a

nd p

erm

anen

t ha

bita

t lo

ss a

nd c

ould

pot

entia

lly r

esul

t in

dire

ct

mor

talit

y, i

njur

y, o

r ha

rass

men

t of

toa

ds,

espe

cial

ly d

urin

g th

e tim

e of

yea

r w

hen

toad

s ar

e m

ovin

g to

and

disp

ersin

g fro

m a

quat

ic h

abita

ts, a

nd d

ecre

ased

w

ater

and

hab

itat

qual

ity.

Im

plem

enta

tion

of M

itiga

tion

Mea

sure

BIO

-1b

Miti

gatio

n M

easu

re B

IO-1

a

To d

eter

min

e pr

esen

ce o

r ab

senc

e of

Mas

onic

roc

k cr

ess

in t

he d

evel

opm

ent

area

, a

qual

ified

bio

logi

st sh

all c

ondu

ct fo

cuse

d su

rvey

s ac

cord

ing

to C

DFG

gui

delin

es,

for t

his

spec

ies p

rior t

o th

e on

set o

f con

struc

tion

activ

ities

. Th

e su

rvey

s sha

ll be

con

duct

ed a

t the

pr

oper

tim

e of

yea

r whe

n th

is pl

ant i

s bo

th e

vide

nt a

nd id

entif

iabl

e. A

qua

lifie

d bi

olog

ist

is an

ind

ivid

ual

who

pos

sess

es t

he f

ollo

win

g qu

alifi

catio

ns:

1) e

xper

ienc

e co

nduc

ting

floris

tic fi

eld

surv

eys;

2) k

now

ledg

e of

pla

nt ta

xono

my

and

plan

t com

mun

ity e

colo

gy; 3

) fa

mili

arity

with

the

plan

ts of

the

area

, inc

ludi

ng ra

re, t

hrea

tene

d, a

nd e

ndan

gere

d sp

ecie

s; 4)

fam

iliar

ity w

ith t

he a

ppro

pria

te s

tate

and

fed

eral

sta

tute

s re

late

d to

pla

nts

and

plan

t co

llect

ing;

and

5)

expe

rienc

e w

ith a

naly

zing

im

pact

s of

dev

elop

men

t on

nat

ive

plan

t sp

ecie

s com

mun

ities

.

If M

ason

ic ro

ck c

ress

is n

ot fo

und

in th

e de

velo

pmen

t are

a, n

o fu

rther

miti

gatio

n w

ould

be

requ

ired.

How

ever

, if t

his

plan

t spe

cies

is lo

cate

d, th

e su

rvey

will

det

erm

ine

the

num

ber

of in

divi

dual

s pre

sent

and

the

limits

of t

he a

rea

occu

pied

by

the

popu

latio

n, a

nd o

ne o

f the

fo

llow

ing

addi

tiona

l miti

gatio

n m

easu

res s

hall

be im

plem

ente

d:

(a)

avoi

danc

e an

d pe

rman

ent p

rote

ctio

n of

the

onsit

e po

pula

tion;

(b)

perm

anen

t pr

eser

vatio

n of

an

exist

ing,

offs

ite p

opul

atio

n of

the

spe

cies

in

the

regi

on a

t a 2

:1 a

crea

ge ra

tio; o

r

(c)

trans

plan

t the

indi

vidu

als t

o pe

rman

ently

pre

serv

ed h

abita

t on-

or o

ff-sit

e at

a 1

:1

acre

age

ratio

. If

trans

plan

ted

offs

ite, t

he lo

catio

n sh

ould

pre

fera

bly

be a

djac

ent t

o th

e sit

e or

in c

lose

pro

xim

ity.

Each

add

ition

al m

itiga

tion

optio

n ab

ove

(a –

c)

shal

l in

clud

e th

e pr

epar

atio

n of

a

Pres

erva

tion

Plan

(und

er a

or b

) or a

Miti

gatio

n Pl

an (u

nder

c) b

y a

qual

ified

bio

logi

st to

be

sub

mitt

ed to

and

app

rove

d by

the

Tow

n.

The

Pres

erva

tion

or M

itiga

tion

Plan

sha

ll in

clud

e th

e lo

catio

n an

d ex

tent

of t

he p

rese

rved

or t

rans

plan

ted

indi

vidu

als

and

mea

sure

s

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-16

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

wou

ld re

duce

impa

cts r

esul

ting

from

the

Proj

ect t

o Y

osem

ite to

ad to

a le

ss-th

an-

signi

fican

t lev

el.

Bird

s

The

will

ow-a

lder

rip

aria

n co

rrido

r al

ong

Mam

mot

h Cr

eek

prov

ides

pot

entia

l br

eedi

ng a

nd n

estin

g ha

bita

t fo

r w

illow

fly

catc

hers

. Th

e ne

sting

sea

son

is a

criti

cal p

erio

d fo

r the

mai

nten

ance

of b

ird p

opul

atio

ns a

nd d

istur

banc

e ac

tiviti

es

that

cau

se b

irds

to a

band

on a

n ac

tive

nest

or d

irect

nes

t ups

et a

re c

onsid

ered

a

pote

ntia

lly s

igni

fican

t im

pact

. Im

plem

enta

tion

of M

itiga

tion

Mea

sure

BIO

-1c,

sc

hedu

ling

cons

truct

ion

activ

ities

out

side

the

3 to

4 m

onth

bre

edin

g se

ason

(J

une

1st t

hrou

gh S

epte

mbe

r 15t

h) o

r, if

not f

easib

le, c

ondu

ctin

g pr

otoc

ol-le

vel

surv

eys,

wou

ld r

educ

e co

nstru

ctio

n-re

late

d im

pact

s to

bre

edin

g an

d ne

sting

w

illow

flyc

atch

ers t

o le

ss th

an si

gnifi

cant

.

The

Mam

mot

h Cr

eek

ripar

ian

corri

dor,

as

wel

l as

the

oth

er v

eget

atio

n co

mm

uniti

es i

n th

e stu

dy a

rea,

also

sup

ports

pot

entia

l br

eedi

ng a

nd n

estin

g ha

bita

t for

oth

er m

igra

tory

bird

s (e

.g.,

yello

w w

arbl

er)

and

rapt

ors

(e.g

., re

d-ta

iled

haw

k, s

harp

-shi

nned

haw

k).

Cons

truct

ion

activ

ities

, suc

h as

veg

etat

ion

clea

ring

and

grub

bing

and

gra

ding

, cou

ld h

ave

signi

fican

t im

pact

s on

bre

edin

g bi

rds

by d

estro

ying

nes

ts an

d ne

sting

hab

itat a

nd/o

r cau

sing

nest

aban

donm

ent.

Im

plem

enta

tion

of

Miti

gatio

n M

easu

re

BIO

-1d

wou

ld

redu

ce

pote

ntia

lly

signi

fican

t im

pact

s to

oth

er b

reed

ing

and

nesti

ng m

igra

tory

bird

s an

d ra

ptor

s to

a

less

-than

-sig

nific

ant l

evel

.

Follo

win

g co

nstru

ctio

n, b

reed

ing

and

nesti

ng m

igra

tory

bird

s, in

clud

ing

the

will

ow f

lyca

tche

r, an

d ra

ptor

s co

uld

be d

irect

ly a

nd/o

r in

dire

ctly

impa

cted

by

incr

ease

d hu

man

-rela

ted

distu

rban

ces

indi

rect

ly

caus

ed

by

the

Proj

ect.

Im

plem

enta

tion

of M

itiga

tion

Mea

sure

BIO

-1e,

whi

ch i

nclu

des

good

wild

life

man

agem

ent

prac

tices

, w

ould

red

uce

pote

ntia

lly s

igni

fican

t po

st co

nstru

ctio

n im

pact

s to

a le

ss-th

an-s

igni

fican

t lev

el.

to e

nsur

e pr

otec

tion

of th

e po

pula

tion

durin

g an

d fo

llow

ing

Proj

ect i

mpl

emen

tatio

n (in

pe

rpet

uity

), in

clud

ing

a m

echa

nism

to e

nsur

e pe

rman

ent p

rese

rvat

ion

of th

e po

pula

tion

from

dev

elop

men

t suc

h as

a c

onse

rvat

ion

ease

men

t. T

he P

lan

shal

l also

incl

ude

met

hods

to

tra

nspl

ant

the

indi

vidu

als

(if a

pplic

able

), m

easu

res

to m

aint

ain

the

popu

latio

n (i.

e.,

wee

d co

ntro

l), a

nd m

etho

ds t

o m

onito

r th

e po

pula

tion

for

a m

inim

um o

f fiv

e ye

ars

follo

win

g pr

eser

vatio

n or

tran

spla

ntat

ion,

incl

udin

g pe

rform

ance

crit

eria

and

con

tinge

ncy

mea

sure

s in

case

of f

ailu

re to

mee

t the

esta

blish

ed p

erfo

rman

ce c

riter

ia.

Miti

gatio

n M

easu

re B

IO-1

b

To a

void

sub

stant

ial a

dver

se a

ffect

s to

Yos

emite

toad

, a q

ualif

ied

biol

ogist

sha

ll co

nduc

t su

rvey

s fo

llow

ing

stand

ard

visu

al e

ncou

nter

tec

hniq

ues

supp

lem

ente

d w

ith d

ipne

tting

su

rvey

s to

con

firm

pre

senc

e or

abs

ence

of

toad

s in

the

stu

dy a

rea.

A

t m

inim

um, t

he

biol

ogist

sha

ll be

fam

iliar

with

the

disti

ngui

shin

g ph

ysic

al c

hara

cter

istic

s of

all

life

stage

s of

the

Yos

emite

toa

d an

d ot

her

amph

ibia

ns f

ound

in

the

Sier

ra N

evad

a re

gion

of

Calif

orni

a.

The

biol

ogist

sha

ll al

so h

old

all

nece

ssar

y fe

dera

l, sta

te, a

nd l

ocal

age

ncy

perm

its f

or s

urve

ying

and

han

dlin

g th

is sp

ecie

s. B

ecau

se t

he a

ctua

l tim

ing

of v

isual

en

coun

ter a

nd d

ipne

tting

sur

veys

for Y

osem

ite to

ad m

ay v

ary

depe

ndin

g pr

imar

ily o

n th

e w

ater

shed

cha

ract

erist

ics,

regi

onal

snow

pac

t, tim

ing

and

rate

of s

prin

g ru

noff,

day

leng

th,

aver

age

ambi

ent a

ir an

d w

ater

tem

pera

ture

s, an

d lo

cal a

nd s

easo

nal w

eath

er c

ondi

tions

, th

e bi

olog

ist sh

all v

isit n

earb

y ac

cess

ible

occ

urre

nces

of Y

osem

ite to

ad (r

efer

ence

site

s) to

id

entif

y th

e br

eedi

ng p

erio

d in

the

vici

nity

of

the

Proj

ect s

ite.

The

biol

ogist

sha

ll th

en

cond

uct

at l

east

one

to t

wo

visu

al e

ncou

nter

sur

veys

fro

m M

ay t

hrou

gh J

uly

at t

he

appr

opria

te ti

me

of d

ay to

det

erm

ine

pres

ence

or

abse

nce

of to

ads

onsit

e.

If du

ring

the

initi

al b

reed

ing

surv

ey,

no i

ndiv

idua

l Y

osem

ite t

oads

or

egg

mas

ses

are

enco

unte

red,

su

bseq

uent

sur

veys

sha

ll be

con

duct

ed tw

o to

fou

r w

eeks

late

r. A

ppro

xim

atel

y fo

ur to

ei

ght w

eeks

afte

r com

plet

ing

the

bree

ding

sur

vey(

s), d

ipne

tting

sur

veys

for t

adpo

les

shal

l be

con

duct

ed (u

sual

ly Ju

ly th

roug

h A

ugus

t).

If no

indi

vidu

al to

ads

(e.g

., ad

ults

or ta

dpol

es) o

r egg

mas

ses

are

enco

unte

red,

no

furth

er

miti

gatio

n w

ould

be

requ

ired.

H

owev

er, i

f Y

osem

ite to

ad is

enc

ount

ered

the

follo

win

g

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-17

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

Mam

mal

s

Sier

ra N

evad

a M

ount

ain

Beav

er a

nd M

ount

Lye

ll Sh

rew

Goo

d w

ildlif

e m

anag

emen

t pr

actic

es s

uch

as t

hose

out

lined

in

Miti

gatio

n M

easu

re B

IO-1

e w

ould

also

red

uce

post-

cons

truct

ion

impa

cts

to t

he S

ierra

N

evad

a M

ount

ain

Beav

er a

nd M

ount

Lye

ll sh

rew

to le

ss th

an si

gnifi

cant

.

Wes

tern

Whi

te-T

aile

d Ja

ckra

bbit

The

noise

and

vib

ratio

ns f

rom

con

struc

tion

equi

pmen

t ass

ocia

ted

with

Pro

ject

co

nstru

ctio

n an

d ot

her

cons

truct

ion-

rela

ted

activ

ities

(e.

g.,

incr

ease

d hu

man

ac

tiviti

es, f

oot a

nd v

ehic

le tr

affic

) wou

ld li

kely

cre

ate

distu

rban

ce th

at sh

ould

be

suffi

cien

t to

caus

e ju

veni

le a

nd a

dult

hare

s oc

curri

ng w

ithin

the

deve

lopm

ent

area

to

mov

e aw

ay f

rom

the

con

struc

tion

area

. Th

is w

ould

be

cons

ider

ed a

sig

nific

ant

impa

ct.

Im

plem

enta

tion

of

Miti

gatio

n M

easu

re

BIO

-1f,

pre-

cons

truct

ion

surv

eys,

wou

ld re

duce

impa

cts t

o w

hite

-taile

d ja

ckra

bbits

to a

less

-th

an-s

igni

fican

t lev

el.

Am

eric

an B

adge

r

Veg

etat

ion

com

mun

ities

eas

t of

the

exi

sting

gol

f co

urse

and

nor

th o

f O

ld

Mam

mot

h R

oad

prov

ide

pote

ntia

l hab

itat f

or th

e A

mer

ican

bad

ger.

Thi

s wou

ld

be a

pot

entia

lly si

gnifi

cant

impa

ct.

Impl

emen

tatio

n of

Miti

gatio

n M

easu

re B

IO-

1g, p

re-c

onstr

uctio

n su

rvey

s, w

ould

red

uce

the

pote

ntia

l los

s of

act

ive

badg

er

burro

ws a

nd/o

r ind

ivid

ual b

adge

rs to

less

than

sign

ifica

nt.

mea

sure

s sha

ll be

impl

emen

ted:

• A

qua

lifie

d bi

olog

ist s

hall

deve

lop

and

impl

emen

t, in

coo

rdin

atio

n w

ith t

he

USF

WS,

CD

FG, a

nd U

SFS,

an

excl

usio

n an

d re

loca

tion

prog

ram

for

Yos

emite

to

ads

with

in th

e de

velo

pmen

t are

a. T

he d

esig

n an

d ty

pe o

f exc

lusio

n fe

ncin

g, a

s w

ell a

s th

e m

etho

d an

d lo

catio

n of

relo

catio

n sh

all b

e ap

prov

ed b

y th

e re

sour

ce

agen

cies

prio

r to

impl

emen

tatio

n.

• Pr

e-co

nstru

ctio

n su

rvey

s of

aqu

atic

hab

itats

and

adja

cent

terre

stria

l hab

itat s

hall

be c

ondu

cted

in

all

wor

k ar

ea b

y qu

alifi

ed b

iolo

gist

with

in t

wo

wee

ks o

f in

itiat

ing

wor

k.

Any

obs

erve

d to

ads

shal

l be

relo

cate

d ac

cord

ing

to p

roce

dure

s ou

tline

d in

the

exc

lusio

n an

d re

loca

tion

prog

ram

dev

elop

ed a

nd i

mpl

emen

ted

abov

e.

Act

ive

wor

k ar

eas

shal

l be

re-

surv

eyed

reg

ular

ly b

etw

een

May

and

Se

ptem

ber.

• D

urin

g co

nstru

ctio

n ac

tiviti

es, a

ll tra

sh th

at m

ay a

ttrac

t pre

dato

rs w

ill b

e pr

oper

ly

cont

aine

d, r

emov

ed f

rom

the

wor

k ar

ea, a

nd d

ispos

ed o

f re

gula

rly.

Follo

win

g Pr

ojec

t co

nstru

ctio

n, a

ll tra

sh a

nd c

onstr

uctio

n de

bris

shal

l be

rem

oved

fro

m

wor

k ar

eas.

• A

ny fu

elin

g an

d m

aint

enan

ce o

f veh

icle

s an

d ot

her e

quip

men

t and

sta

ging

are

as

shal

l be

at

leas

t 65

ft

(20

m)

from

any

will

ow-a

lder

rip

aria

n co

mm

unity

or

wat

erbo

dy.

• A

ppro

pria

te s

edim

ent

and

eros

ion

cont

rol

best

man

agem

ent

prac

tices

(B

MPs

) sh

all b

e im

plem

ente

d to

pro

tect

the

wat

er q

ualit

y of

the

Mam

mot

h Cr

eek

and

the

seve

ral

pond

s ne

ar M

amm

oth

Cree

k, a

s w

ell

as t

he g

olf

cour

se p

onds

and

as

soci

ated

dra

inag

es.

BMPs

to b

e im

plem

ente

d sh

all b

e de

scrib

ed in

the

Proj

ect

site’

s sto

rmw

ater

pol

lutio

n pr

even

tion

plan

(SW

PPP)

and

sha

ll be

ins

talle

d ac

cord

ing

to th

e m

anuf

actu

re’s

spec

ifica

tions

.

• A

reas

tem

pora

rily

distu

rbed

by

cons

truct

ion

activ

ities

sha

ll be

rec

onto

ured

and

re

vege

tate

d. A

n ap

prop

riate

ass

embl

age

of v

eget

atio

n th

at is

suita

ble

for t

he a

rea

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-18

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

shal

l be

used

dur

ing

resto

ratio

n ef

forts

.

Miti

gatio

n M

easu

re B

IO-1

c

To a

void

sub

stant

ial a

dver

se a

ffect

s to

nes

ting

will

ow fl

ycat

cher

s, co

nstru

ctio

n ac

tiviti

es,

incl

udin

g ve

geta

tion

clea

ring

and

grub

bing

and

gra

ding

, on

the

porti

on o

f the

dev

elop

men

t ar

ea n

orth

of O

ld M

amm

oth

Roa

d sh

all b

e co

nduc

ted

outsi

de o

f the

nes

ting

seas

on (J

une

1st t

hrou

gh S

epte

mbe

r 15t

h).

If th

is is

not f

easib

le, t

hen

a qu

alifi

ed b

iolo

gist

hold

ing

all

nece

ssar

y fe

dera

l, sta

te,

and

agen

cy p

erm

its s

hall

cond

uct

prot

ocol

-leve

l su

rvey

s fo

r w

illow

fly

catc

hers

fol

low

ing

met

hods

out

lined

in A

Will

ow F

lyca

tche

r Su

rvey

Pro

toco

l fo

r Cal

iforn

ia t

o co

nfirm

pre

senc

e or

abs

ence

in th

e stu

dy a

rea.

A q

ualif

ied

biol

ogist

is

an

indi

vidu

al

who

ha

s su

ffici

ent

know

ledg

e,

train

ing,

an

d ex

perie

nce

with

bi

rd

iden

tific

atio

n an

d su

rvey

s to

disti

ngui

sh th

e w

illow

flyc

atch

er fr

om o

ther

non

-Em

pido

nax

spec

ies,

and

reco

gniz

e th

e w

illow

fly

catc

her’s

prim

ary

song

. A

lso,

it is

stron

gly

reco

mm

ende

d th

at t

he b

iolo

gist

has

atte

nded

a w

illow

fly

catc

her

surv

ey t

rain

ing

wor

ksho

p. T

he p

roto

col i

s bas

ed o

n th

e us

e of

repe

ated

tape

-pla

ybac

k su

rvey

s dur

ing

pre-

dete

rmin

ed p

erio

ds o

f the

bre

edin

g se

ason

: Sur

vey

Perio

d 1:

Jun

e 1s

t thr

ough

Jun

e 14

th;

Surv

ey P

erio

d 2;

Jun

e 15

th th

roug

h Ju

ne 2

5th;

and

Sur

vey

Perio

d 3:

Jun

e 26

th th

roug

h Ju

ly 1

5th.

It r

equi

res

a m

inim

um o

f tw

o su

rvey

s on

the

site,

one

dur

ing

Surv

ey P

erio

d 2

and

one

durin

g ei

ther

Sur

vey

Perio

d 1,

or

Surv

ey P

erio

d 3

to d

ocum

ent

pres

ence

or

abse

nce

of w

illow

fly

catc

hers

dur

ing

the

surv

ey y

ear.

In

addi

tion,

suc

cess

ive

surv

eys

mus

t be

at le

ast f

ive

days

apa

rt; su

rvey

s don

e fe

wer

than

5 d

ays a

part

are

not c

onsid

ered

to

be in

sepa

rate

surv

ey p

erio

ds.

If no

will

ow f

lyca

tche

rs a

re d

etec

ted

in th

e stu

dy a

rea,

no

furth

er m

itiga

tion

wou

ld b

e re

quire

d.

How

ever

, if

will

ow f

lyca

tche

r is

dete

cted

, the

CD

FG s

hall

be c

onta

cted

for

a

final

disc

ussio

n on

the

pos

sibili

ty o

f do

ing

cons

truct

ion-

rela

ted

activ

ities

dur

ing

the

bree

ding

seas

on.

Also

, in

coor

dina

tion

with

the

CD

FG, a

long

-term

(i.e

., gr

eate

r tha

n fiv

e ye

ar)

mon

itorin

g pr

ogra

m s

hall

be d

evel

oped

and

im

plem

ente

d in

ord

er t

o pr

otec

t th

e ex

istin

g po

pula

tion

and

prov

ide

base

line

data

to

m

ake

wel

l-inf

orm

ed,

adap

tabl

e m

anag

emen

t pla

ns, i

f nee

ded

in th

e fu

ture

. Re

gard

less

of w

heth

er o

r not

flyc

atch

ers

are

dete

cted

, the

will

ow f

lyca

tche

r su

rvey

for

ms

(For

m 1

; Will

ow F

lyca

tche

r Fi

eld

Surv

ey

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-19

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

Form

, Fo

rm 2

; W

illow

Fly

catc

her

Surv

ey S

umm

ary-

Site

Des

crip

tion,

and

For

m 3

: W

illow

Fly

catc

her S

urve

y Su

mm

ary-

Resu

lts S

umm

ary)

sha

ll be

sub

mitt

ed to

the

CDFG

by

Oct

ober

1st

of e

ach

year

.

Miti

gatio

n M

easu

re B

IO-1

d

To a

void

sub

stant

ial a

dver

se a

ffect

s to

oth

er n

estin

g m

igra

tory

bird

s an

d ra

ptor

s, on

e of

th

e fo

llow

ing

mea

sure

s sha

ll be

impl

emen

ted:

• Co

nduc

t ve

geta

tion

rem

oval

and

oth

er g

roun

d di

sturb

ance

act

iviti

es a

ssoc

iate

d w

ith P

roje

ct c

onstr

uctio

n du

ring

the

non-

bree

ding

sea

son

(Sep

tem

ber

16th

th

roug

h M

arch

14t

h); O

R

• Co

nduc

t pre

-con

struc

tion

surv

eys f

or n

estin

g bi

rds i

f con

struc

tion

activ

ities

are

to

take

pla

ce d

urin

g th

e ne

sting

seas

on (M

arch

15t

h th

roug

h Se

ptem

ber 1

5th)

. Pr

e-co

nstru

ctio

n su

rvey

s sh

all b

e co

nduc

ted

by a

qua

lifie

d bi

olog

ist o

nce

per

wee

k fo

r ei

ght c

onse

cutiv

e w

eeks

at t

he a

ppro

pria

te ti

me

of d

ay d

urin

g th

e br

eedi

ng

seas

on a

nd s

hall

end

no m

ore

than

thre

e da

ys p

rior

to th

e on

set o

f co

nstru

ctio

n ac

tiviti

es to

con

firm

pre

senc

e or

abs

ence

of a

ctiv

e ne

sts in

the

Proj

ect v

icin

ity (a

t le

ast

300

feet

aro

und

the

deve

lopm

ent

area

). I

f ac

tive

nests

are

enc

ount

ered

, sp

ecie

s-sp

ecifi

c m

easu

res

shal

l be

pr

epar

ed

by

a qu

alifi

ed

biol

ogist

, in

co

ordi

natio

n w

ith th

e C

DFG

and

oth

er a

ppro

pria

te a

genc

ies,

and

impl

emen

ted

to

prev

ent

dire

ct

loss

or

ab

ando

nmen

t of

th

e ac

tive

nest.

A

t a

min

imum

, co

nstru

ctio

n ac

tiviti

es i

n th

e vi

cini

ty o

f ne

st sh

all

be d

efer

red

until

the

you

ng

have

fle

dged

and

an

excl

usio

n bu

ffer

zone

sha

ll be

esta

blish

ed.

A m

inim

um

excl

usio

n bu

ffer

of 2

5 fe

et i

s ty

pica

lly r

ecom

men

ded

by C

DFG

for

son

gbird

ne

sts, a

nd 2

00 to

500

feet

for r

apto

r nes

ts, d

epen

ding

on

the

spec

ies a

nd lo

catio

n.

The

perim

eter

of t

he n

est-s

etba

ck z

one

shal

l be

fenc

ed o

r ade

quat

ely

dem

arca

ted

with

sta

ked

flagg

ing

at 2

0-fo

ot i

nter

vals,

and

con

struc

tion

pers

onne

l re

stric

ted

from

the

area

. A

surv

ey re

port

by th

e qu

alifi

ed b

iolo

gist

verif

ying

that

the

youn

g ha

ve fl

edge

d sh

all b

e su

bmitt

ed to

the

Tow

n fo

r rev

iew

and

con

curre

nce

prio

r to

initi

atio

n of

con

struc

tion

activ

ities

with

in t

he n

est-s

et-b

ack

zone

. T

he s

urve

y

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-20

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

repo

rt sh

all a

lso b

e su

bmitt

ed to

the

CDFG

for r

evie

w.

Miti

gatio

n M

easu

re B

IO-1

e

The

follo

win

g go

od w

ildlif

e m

anag

emen

t pr

actic

es s

hall

be i

mpl

emen

ted

to r

educ

e im

pact

s to

nesti

ng m

igra

tory

bird

s and

rapt

ors,

as w

ell a

s oth

er w

ildlif

e sp

ecie

s, fo

llow

ing

Proj

ect d

evel

opm

ent.

• D

omes

tic p

ets b

elon

ging

to re

siden

ts or

visi

tors

shal

l be

proh

ibite

d fro

m e

nter

ing

the

adja

cent

und

evel

oped

land

s or o

pen

spac

e ar

eas.

Sig

nage

shal

l be

poste

d an

d m

aint

aine

d al

ong

the

boun

darie

s of

the

dev

elop

men

t ar

ea i

ndic

atin

g su

ch

proh

ibiti

ons

and

educ

atin

g th

e co

mm

unity

abo

ut d

omes

tic p

ets

as a

con

serv

atio

n th

reat

to b

irds a

nd o

ther

wild

life.

• Si

gnag

e sh

all b

e in

stalle

d al

ong

the

exist

ing

natu

re tr

ails

on th

e Pr

ojec

t par

cel

north

of

Old

Mam

mot

h R

oad

educ

atin

g th

e co

mm

unity

abo

ut t

he b

reed

ing

seas

on b

eing

a v

ital p

erio

d in

bird

s’ a

nd o

ther

ani

mal

s’ li

ves

and

distu

rban

ces

durin

g th

is tim

e m

ay re

sult

in n

est o

r you

ng a

band

onm

ent.

• Ed

ucat

iona

l bro

chur

es s

hall

be d

istrib

uted

to re

siden

ts an

d vi

sitor

s di

scus

sing

the

impo

rtanc

e of

not

sup

plem

entin

g th

e di

et o

f av

ian

nest

pred

ator

s su

ch a

s ja

ys

(Cya

noci

tta s

p.),

mag

pie

(Pic

a sp

.), r

aven

s (C

orvu

s co

rax)

, and

bro

wn-

head

ed

cow

bird

(M

olot

hrus

ate

r) by

fee

ding

the

m d

urin

g th

e br

eedi

ng s

easo

n.

Also

, ed

ucat

iona

l bro

chur

es s

hall

instr

uct r

esid

ents

and

visit

ors

not t

o fe

ed w

ildlif

e or

al

low

wild

life

acce

ss to

tras

h.

This

coul

d le

ad to

incr

ease

d na

tura

l mam

mal

ian

pred

ator

s su

ch a

s ra

ccoo

n, fo

x (V

ulpe

s sp

.), a

nd o

poss

um (D

idel

phis

virg

inia

na).

Th

ese

pred

ator

s te

nd to

ben

efit

disp

ropo

rtion

atel

y fro

m h

uman

hab

itatio

n, a

nd a

s th

eir p

opul

atio

ns e

xpan

d th

ey a

re n

egat

ivel

y af

fect

ing

the

heal

th o

f bird

and

oth

er

anim

al p

opul

atio

ns.

• N

ight

lig

htin

g as

soci

ated

w

ith

the

Proj

ect

shal

l be

de

signe

d to

pr

ovid

e ill

umin

atio

n of

tar

get

area

s w

ith m

inim

al o

ffsite

visi

bilit

y to

avo

id p

oten

tially

ill

umin

atin

g w

ildlif

e us

e ar

eas

loca

ted

with

in a

nd a

djac

ent t

o th

e de

velo

pmen

t ar

ea.

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-21

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

Miti

gatio

n M

easu

re B

IO-1

f

To a

void

sub

stant

ial

adve

rse

affe

cts

to w

este

rn w

hite

-taile

d ja

ckra

bbit,

one

of

the

follo

win

g m

easu

res s

hall

be im

plem

ente

d:

• Co

nduc

t ve

geta

tion

rem

oval

and

oth

er g

roun

d di

sturb

ance

act

iviti

es a

ssoc

iate

d w

ith P

roje

ct c

onstr

uctio

n du

ring

the

non-

bree

ding

sea

son

(Aug

ust

1st

thro

ugh

Janu

ary

31st)

; OR

• Co

nduc

t pr

e-co

nstru

ctio

n su

rvey

s fo

r w

este

rn

whi

te-ta

iled

jack

rabb

it if

cons

truct

ion

activ

ities

are

to ta

ke p

lace

dur

ing

the

bree

ding

sea

son

(Feb

ruar

y 1s

t th

roug

h Ju

ly 3

1st).

Pr

e-co

nstru

ctio

n su

rvey

s sh

all b

e co

nduc

ted

by a

bio

logi

st fa

mili

ar w

ith th

is ha

res’

hab

itat a

nd s

ign

(e.g

., tra

cks,

pelle

ts) o

nce

per w

eek

for

five

cons

ecut

ive

wee

ks a

nd sh

all e

nd n

o m

ore

than

thre

e da

ys p

rior t

o th

e on

set o

f co

nstru

ctio

n ac

tiviti

es t

o co

nfirm

pre

senc

e or

abs

ence

of

hare

s w

ithin

the

Pr

ojec

t’s d

evel

opm

ent

area

. I

f ha

res

or e

vide

nce

of h

are

is en

coun

tere

d, t

he

qual

ified

bio

logi

st, in

coo

rdin

atio

n w

ith th

e CD

FG, s

hall

deve

lop

and

impl

emen

t sit

e-sp

ecifi

c m

easu

res

(e.g

., ex

clus

ion

buffe

r zo

ne, n

estin

g m

onito

ring)

to a

void

lo

ss o

f ne

sts o

r yo

ung.

A

sur

vey

repo

rt by

the

qual

ified

bio

logi

st ve

rifyi

ng th

e pr

esen

ce o

r ab

senc

e of

wes

tern

whi

te-ta

iled

jack

rabb

it an

d de

scrib

ing

mea

sure

s de

velo

ped

and

impl

emen

ted

to a

void

har

es,

if de

term

ined

pre

sent

, sh

all

be

subm

itted

to

the

Tow

n fo

r re

view

and

con

curre

nce

prio

r to

ini

tiatio

n of

co

nstru

ctio

n ac

tiviti

es.

Miti

gatio

n M

easu

re B

IO-1

g

To a

void

subs

tant

ial a

dver

se e

ffect

s to

badg

ers,

a qu

alifi

ed w

ildlif

e bi

olog

ist sh

all c

ondu

ct

an i

nitia

l su

rvey

for

act

ive

burro

ws

at l

east

30 d

ays

prio

r to

ini

tiatio

n of

con

struc

tion

activ

ities

to c

onfir

m p

rese

nce

or a

bsen

ce o

f bad

ger i

n th

e pr

ojec

t vic

inity

(at l

east

150

feet

ar

ound

the

dev

elop

men

t fo

otpr

int).

If

no i

ndiv

idua

l ba

dger

s or

evi

denc

e of

bad

ger

is fo

und,

no

furth

er m

itiga

tion

wou

ld b

e re

quire

d at

thi

s tim

e.

How

ever

, if

badg

er i

s de

tect

ed, s

ite-s

peci

fic m

easu

res

(e.g

., ex

clus

ion

buffe

r zon

e, n

estin

g m

onito

ring)

sha

ll be

pr

epar

ed b

y a

qual

ified

bio

logi

st, in

coo

rdin

atio

n w

ith th

e C

DFG

and

oth

er a

genc

ies

as

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-22

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

appr

opria

te, a

nd im

plem

ente

d to

pre

vent

dire

ct lo

ss o

f act

ive

burro

ws

and/

or in

divi

dual

s.

Rega

rdle

ss o

f whe

ther

bad

ger i

s det

ecte

d du

ring

the

initi

al su

rvey

, a su

bseq

uent

surv

ey fo

r ba

dger

in th

e Pr

ojec

t vic

inity

shal

l be

cond

ucte

d no

mor

e th

an 3

day

s prio

r to

the

initi

atio

n of

con

struc

tion

activ

ities

to c

onfir

m n

o ne

w b

urro

ws

have

esta

blish

ed in

the

inte

rven

ing

perio

d.

A s

urve

y re

port

by t

he q

ualif

ied

biol

ogist

ver

ifyin

g th

at t

here

are

no

activ

e bu

rrow

s pr

esen

t in

the

deve

lopm

ent f

ootp

rint s

hall

be s

ubm

itted

to th

e To

wn

for r

evie

w

and

conc

urre

nce

prio

r to

initi

atio

n of

con

struc

tion

activ

ities

. Th

e su

rvey

repo

rt sh

all a

lso

be su

bmitt

ed to

the

CDFG

for r

evie

w.

Impa

ct B

IO-2

Sen

sitiv

e N

atur

al C

omm

uniti

es

Miti

gatio

n M

easu

res B

IO-2

a th

roug

h 2b

Ripa

rian

habi

tat i

s pr

esen

t in

the

study

are

a al

ong

Mam

mot

h Cr

eek;

how

ever

, th

e Pr

ojec

t wou

ld n

ot re

sult

in d

irect

impa

cts

(e.g

., re

mov

al o

r dam

age)

of t

his

vege

tatio

n co

mm

unity

, and

wou

ld in

stead

pre

serv

e th

is co

mm

unity

, as

wel

l as

the

adja

cent

wet

mea

dow

, as

ope

n sp

ace.

Im

plem

enta

tion

of M

itiga

tion

Mea

sure

BIO

-2a

wou

ld re

duce

this

pote

ntia

l im

pact

to le

ss th

an si

gnifi

cant

.

Dev

elop

men

t of

the

Pro

ject

cou

ld a

lso a

ffect

the

rip

aria

n an

d w

et m

eado

w

com

mun

ities

, as w

ell a

s the

oth

er n

atur

al c

omm

uniti

es, p

rese

nt in

the

vici

nity

by

indi

rect

ly in

trodu

cing

non

-nat

ive

plan

t spe

cies

into

thes

e ar

eas.

The

effe

cts

of

this

impa

ct w

ould

be

min

imiz

ed b

y im

plem

enta

tion

of M

itiga

tion

Mea

sure

BIO

-2b

.

Pote

ntia

l jur

isdic

tiona

l wat

ers

and

wet

land

s ar

e pr

esen

t in

the

study

are

a, w

hich

ar

e co

nsid

ered

sen

sitiv

e; h

owev

er, t

hese

fea

ture

s ar

e ad

dres

sed

unde

r “I

mpa

ct

Bio-

3: Ju

risdi

ctio

nal R

esou

rces

” be

low

.

Whi

le t

he o

ther

veg

etat

ion

com

mun

ities

pre

sent

in

the

study

are

a ar

e no

t co

nsid

ered

sen

sitiv

e, th

ey c

onta

in s

ome

trees

that

mee

t the

min

imum

siz

e (s

ix

inch

es in

dia

met

er) t

o re

quire

app

rova

l fro

m th

e To

wn

prio

r to

rem

oval

; im

pact

s to

the

se t

rees

are

add

ress

ed u

nder

“Im

pact

Bio

-5:

Conf

orm

ance

with

Tow

n Po

licie

s and

Ord

inan

ces”

bel

ow.

Miti

gatio

n M

easu

re B

IO-2

a

To a

void

pot

entia

l ina

dver

tent

impa

cts t

o pr

eser

ved

sens

itive

hab

itats

(ripa

rian

habi

tat,

wet

m

eado

w, o

r oth

er ju

risdi

ctio

nal f

eatu

res)

adj

acen

t to

the

deve

lopm

ent a

rea,

the

follo

win

g m

easu

res s

hall

be im

plem

ente

d pr

ior t

o an

d du

ring

cons

truct

ion

activ

ities

:

• Pr

ior

to c

onstr

uctio

n ac

tiviti

es, t

he b

ound

arie

s of

sen

sitiv

e ha

bita

ts th

at w

ill n

ot

be i

mpa

cted

sha

ll be

plo

tted

on a

ll co

nstru

ctio

n pl

ans

and

map

s, in

clud

ing

a m

inim

um b

uffe

r of 1

0 fe

et o

r mor

e as

det

erm

ined

by

a qu

alifi

ed b

iolo

gist.

• Si

lt fe

ncin

g an

d co

nstru

ctio

n fe

ncin

g (o

r fla

ggin

g to

mak

e th

e sil

t fen

cing

mor

e vi

sible

) sh

all b

e in

stalle

d ar

ound

the

sen

sitiv

e ha

bita

t and

buf

fer,

and

the

final

lo

catio

n of

the

insta

lled

fenc

ing

shal

l be

appr

oved

by

a qu

alifi

ed b

iolo

gist

prio

r to

initi

atio

n of

con

struc

tion

activ

ities

.

• En

croa

chm

ent

into

the

sen

sitiv

e ha

bita

t an

d bu

ffer

shal

l be

pro

hibi

ted

by

cons

truct

ion

pers

onne

l, an

d sto

rage

of m

ater

ials

or e

quip

men

t sha

ll be

pro

hibi

ted

in th

is ar

ea.

• Pr

ior

to t

he o

nset

of

cons

truct

ion

activ

ities

, co

nstru

ctio

n pe

rson

nel

shal

l be

br

iefe

d on

the

loc

atio

n of

sen

sitiv

e ha

bita

t an

d ot

her

reso

urce

s th

at s

hall

be

pers

ever

ed a

nd th

e im

porta

nce

of a

void

ance

.

• Th

e sil

t fen

ce sh

all b

e m

onito

red

regu

larly

dur

ing

cons

truct

ion

activ

ities

to e

nsur

e

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-23

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

that

the

fen

cing

rem

ains

int

act

and

func

tiona

l, an

d th

at n

o en

croa

chm

ent

has

occu

rred

into

the

sen

sitiv

e ha

bita

t or

bou

ndar

y; a

ny r

epai

rs t

o th

e fe

nce

or

encr

oach

men

t cor

rect

ion

shal

l be

cond

ucte

d im

med

iate

ly.

A m

emo

sum

mar

izin

g m

onito

ring

date

s, ob

serv

atio

ns,

and

repa

irs/c

orre

ctio

ns

shal

l be

pr

epar

ed

follo

win

g ea

ch c

onstr

uctio

n se

ason

and

subm

itted

to th

e To

wn.

• A

ppro

pria

te s

edim

ent

and

eros

ion

cont

rol

best

man

agem

ent

prac

tices

(B

MPs

) sh

all b

e im

plem

ente

d to

pro

tect

wat

er q

ualit

y of

Mam

mot

h Cr

eek

and

its a

djac

ent

wet

mea

dow

com

mun

ity d

urin

g an

d fo

llow

ing

proj

ect c

onstr

uctio

n. T

he B

MPs

to

be

im

plem

ente

d sh

all

be

desc

ribed

in

th

e sit

e’s

storm

wat

er

pollu

tion

prev

entio

n pl

an (S

WPP

P) a

nd s

hall

be in

stalle

d ac

cord

ing

to th

e m

anuf

actu

rer’s

sp

ecifi

catio

ns.

• A

ll fu

elin

g an

d m

aint

enan

ce o

f ve

hicl

es a

nd o

ther

equ

ipm

ent a

nd s

tagi

ng a

reas

sh

all b

e at

leas

t 50

ft (1

5 m

) fro

m se

nsiti

ve h

abita

ts.

• M

itiga

tion

Mea

sure

BIO

-2b

• To

min

imiz

e es

tabl

ishm

ent o

f inv

asiv

e, n

on-n

ativ

e pl

ant s

peci

es o

n th

e sit

e, th

e fo

llow

ing

mea

sure

s sha

ll be

impl

emen

ted.

• A

con

struc

tion

sche

dule

sha

ll be

dev

elop

ed to

clo

sely

coo

rdin

ate

activ

ities

suc

h as

cle

arin

g, g

radi

ng, a

nd re

seed

ing,

to e

nsur

e ar

eas

are

not p

rem

atur

ely

strip

ped

of n

ativ

e ve

geta

tion

and

reve

geta

tion

activ

ities

be

cond

ucte

d as

soo

n as

pos

sible

fo

llow

ing

deve

lopm

ent.

• V

eget

atio

n di

sturb

ance

s sh

all b

e lim

ited

to th

ose

area

s id

entif

ied

on c

onstr

uctio

n pl

ans a

nd m

aps a

s sla

ted

for d

evel

opm

ent o

r con

struc

tion

stagi

ng.

• N

ativ

e an

d co

mpa

tible

non

-nat

ive

plan

t sp

ecie

s, es

peci

ally

dro

ught

res

istan

t sp

ecie

s, sh

all b

e us

ed fo

r rev

eget

atio

n. R

efer

to th

e lis

t of P

lant

s th

at T

hriv

e in

Ea

stern

Sie

rra G

arde

ns’ p

repa

red

by M

ono

Cou

nty.

• La

ndsc

apin

g w

ill n

ot u

se i

nvas

ive

non-

nativ

e pl

ants

that

thr

eate

n w

ildla

nds

acco

rdin

g to

the

Cal

iforn

ia I

nvas

ive

Plan

t In

vent

ory

mad

e av

aila

ble

by t

he

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-24

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

Calif

orni

a In

vasiv

e Pl

ant C

ounc

il (C

al-IP

C).

• Er

osio

n an

d se

dim

ent c

ontro

l mat

eria

ls sh

all b

e ce

rtifie

d as

wee

d-fre

e.

Impa

ct B

IO-3

Jur

isdic

tiona

l Res

ourc

es

Miti

gatio

n M

easu

re B

IO-3

Juris

dict

iona

l wat

ers

of th

e U

nite

d St

ates

, inc

ludi

ng w

etla

nds,

and

wat

ers

of th

e St

ate,

are

pre

sent

in M

amm

oth

Cree

k, it

s tri

buta

ries,

seve

ral o

pen

wat

er p

onds

an

d in

the

adj

acen

t w

et m

eado

w c

omm

unity

in

the

study

are

a no

rth o

f O

ld

Mam

mot

h Ro

ad.

Alth

ough

no

dire

ct im

pact

s w

ould

occ

ur in

thes

e ar

eas

from

th

e Pr

ojec

t, as

the

area

nor

th o

f th

e de

velo

pmen

t are

a w

ould

be

pres

erve

d as

op

en s

pace

, ind

irect

impa

cts

coul

d oc

cur

from

adj

acen

t con

struc

tion

activ

ities

su

ch a

s in

adve

rtent

dam

age

from

equ

ipm

ent

or v

ehic

le s

tagi

ng,

or e

rosio

n.

Impl

emen

tatio

n of

Miti

gatio

n M

easu

re B

IO-2

a ab

ove

wou

ld r

educ

e th

is

pote

ntia

l im

pact

to a

less

-than

-sig

nific

ant l

evel

.

The

exist

ing

golf

cour

se p

onds

wes

t of

Fairw

ay D

rive

and

the

dra

inag

es a

nd

ditc

hes

that

con

nect

the

m a

re n

ot c

onsid

ered

fed

eral

ly j

urisd

ictio

nal

feat

ures

; ho

wev

er, t

hese

are

as m

ay b

e co

nsid

ered

wat

ers o

f the

Sta

te su

bjec

t to

regu

latio

n by

the

RW

QC

B, a

nd m

ay b

e co

nsid

ered

lak

es o

r str

eam

beds

sub

ject

to

regu

latio

n by

CD

FG.

How

ever

, sim

ilar

to th

e ot

her

wat

ers

in th

e stu

dy a

rea

north

of O

ld M

amm

oth

Roa

d, th

ese

feat

ures

are

not

loca

ted

with

in th

e Pr

ojec

t’s

deve

lopm

ent

area

, and

im

plem

enta

tion

of M

itiga

tion

Mea

sure

BIO

-2a

wou

ld

redu

ce a

ny p

oten

tial

indi

rect

im

pact

s re

sulti

ng f

rom

con

struc

tion

activ

ities

to

less

than

sign

ifica

nt.

The

exist

ing

golf

cour

se p

ond,

the

nor

ther

nmos

t re

tent

ion

basin

, an

d th

e dr

aina

ge/d

itch

conn

ectin

g th

ese

feat

ures

loca

ted

sout

h O

ld M

amm

oth

Road

and

ea

st of

Fai

rway

Driv

e ar

e al

so p

oten

tially

sub

ject

to re

gula

tion

by th

e R

WQ

CB

and

CDFG

(bu

t are

not

con

sider

ed to

be

fede

rally

juris

dict

iona

l).

The

Proj

ect

wou

ld r

esul

t in

red

ucin

g th

e sto

rmw

ater

ret

entio

n of

the

exi

sting

gol

f co

urse

po

nd (

i.e.,

low

erin

g th

e sp

illw

ay a

t the

eas

tern

end

of

the

pond

) an

d re

plac

ing

the

dete

ntio

n ba

sin a

nd d

rain

age/

ditc

h w

ith a

ser

ies

of u

nlin

ed s

torm

wat

er

Prio

r to

the

ons

et o

f co

nstru

ctio

n ac

tiviti

es,

incl

udin

g co

ncre

te a

nd r

ipra

p re

mov

al

asso

ciat

ed w

ith th

e re

duct

ion

of th

e sto

rmw

ater

rete

ntio

n in

the

exist

ing

golf

cour

se p

ond,

an

d ve

geta

tion

clea

ring

and

grub

bing

and

gra

ding

ass

ocia

ted

with

the

cre

atio

n of

the

sto

rmw

ater

con

trol b

asin

s an

d ve

geta

tive

swal

e, a

Was

te D

ischa

rge

Requ

irem

ent (

WD

R)

perm

it ap

plic

atio

n sh

all

be s

ubm

itted

to

RWQ

CB

and

a L

ake

or S

tream

bed

Alte

ratio

n N

otifi

catio

n sh

all b

e su

bmitt

ed to

CD

FG fo

r im

pact

s to

the

exist

ing

golf

cour

se p

ond,

the

north

ernm

ost r

eten

tion

basin

, and

the

drai

nage

/ditc

h co

nnec

ting

thes

e fe

atur

es.

Miti

gatio

n m

easu

res

asso

ciat

ed w

ith p

erm

its m

ay i

nclu

de i

mpa

ct m

inim

izat

ion

mea

sure

s su

ch a

s im

plem

enta

tion

of

best

man

agem

ent

prac

tices

(i.

e.,

eros

ion

and

sedi

men

t co

ntro

l m

easu

res)

and

sea

sona

l w

ork

restr

ictio

ns, a

nd p

ossib

ly h

abita

t co

mpe

nsat

ion

mea

sure

s su

ch a

s th

e re

stora

tion

plan

tings

in

the

vici

nity

. I

mpa

cts

to p

oten

tially

jur

isdic

tiona

l fe

atur

es s

hall

not

occu

r un

til t

he p

erm

its a

re r

ecei

ved

from

the

app

ropr

iate

reg

ulat

ory

agen

cies

, or c

orre

spon

denc

e is

rece

ived

from

the

agen

cies

indi

catin

g th

at a

per

mit

is no

t re

quire

d.

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-25

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

cont

rol b

asin

s and

a v

eget

ativ

e sw

ale

(refe

r to

App

endi

x G

, Dra

ft EI

R Te

chni

cal

App

endi

ces,

Hyd

rolo

gy D

ata)

. Im

pact

s to

thes

e fe

atur

es w

ould

be

redu

ced

to

less

than

sign

ifica

nt w

ith im

plem

enta

tion

of M

itiga

tion

Mea

sure

BIO

-3.

Impa

ct B

IO-4

W

ildlif

e m

ovem

ent,

mig

ratio

n co

rrid

ors,

and

nativ

e wi

ldlif

e nu

rser

ies

Miti

gatio

n M

easu

re B

IO-4

a th

roug

h 4c

App

roxi

mat

ely

46 a

cres

of t

he S

herw

in h

oldi

ng a

rea

with

in th

e fo

rmer

fede

ral

parc

el, w

hich

com

prise

s th

e so

uthe

rn a

nd e

aste

rn p

ortio

ns o

f th

e stu

dy a

rea,

so

uth

of O

ld M

amm

oth

Roa

d an

d ea

st of

Fai

rway

Driv

e, w

ould

be

lost

as a

re

sult

of t

he p

ropo

sed

golf

cour

se e

xpan

sion.

Fu

rther

mor

e, a

n ad

ditio

nal

appr

oxim

atel

y 49

acr

es o

f po

tent

ial f

orag

ing

and

resti

ng h

abita

t sou

th o

f O

ld

Mam

mot

h Ro

ad a

nd e

ast

of F

airw

ay D

rive

that

may

be

used

by

deer

in

the

adja

cent

hol

ding

are

a w

ould

be

lost

by P

roje

ct c

onstr

uctio

n.

The

loss

of

the

hold

ing

area

and

add

ition

al f

orag

ing

and

resti

ng h

abita

t cou

ld b

e re

duce

d to

a

less

-than

-sig

nific

ant l

evel

by

impl

emen

tatio

n of

Miti

gatio

n M

easu

re B

IO-4

a.

Cons

truct

ion-

rela

ted

activ

ities

(e.

g.,

noise

and

vib

ratio

n fro

m c

onstr

uctio

n eq

uipm

ent,

incr

ease

hum

an a

ctiv

ity)

coul

d re

sult

in d

istur

banc

e of

ind

ivid

ual

mul

e de

er c

urre

ntly

usin

g th

e ho

ldin

g ar

ea a

nd th

e stu

dy a

rea

for f

orag

ing

and

resti

ng, a

s wel

l as i

ndiv

idua

ls ex

iting

the

hold

ing

area

alo

ng th

e M

amm

oth

Roc

k m

igra

tion

rout

e, lo

cate

d so

uth

of th

e Pr

ojec

t site

. A

lthou

gh th

ese

impa

cts w

ould

be

tem

pora

ry,

as t

hey

wou

ld o

nly

occu

r du

ring

the

cons

truct

ion

perio

d,

impl

emen

tatio

n of

Miti

gatio

n M

easu

re B

IO-4

b, p

rohi

bitin

g m

ajor

con

struc

tion

activ

ities

(e.

g., v

eget

atio

n cl

earin

g an

d gr

ubbi

ng a

nd g

radi

ng)

until

dee

r ha

ve

com

plet

ed s

prin

g an

d fa

ll m

igra

tion

(gen

eral

ly f

rom

Apr

il 15

thro

ugh

June

1

and

from

Oct

ober

1 th

roug

h N

ovem

ber 1

5),

wou

ld re

duce

con

struc

tion-

rela

ted

distu

rban

ce im

pact

s to

less

than

sign

ifica

nt.

Follo

win

g co

nstru

ctio

n, d

eer

usin

g th

e ho

ldin

g ar

ea a

nd t

he M

amm

oth

Rock

M

igra

tion

rout

e co

uld

be d

irect

ly a

nd/o

r ind

irect

ly im

pact

ed b

y th

e op

erat

ion

of

the

resid

entia

l, re

sort,

rec

reat

iona

l, re

tail,

and

pub

lic a

men

ities

com

pone

nts

of

Miti

gatio

n M

easu

re B

IO-4

a

To o

ffset

the

loss

of h

oldi

ng a

rea

deer

hab

itat,

the

appl

ican

t sha

ll pu

rcha

se o

r con

tribu

te

fund

s to

purc

hase

a c

onse

rvat

ion

ease

men

t on

prop

erty

(ies)

that

con

tain

impo

rtant

land

s in

the

win

ter r

ange

, mig

ratio

n co

rrido

r, an

d/or

hol

ding

are

a of

the

Roun

d V

alle

y m

ule

deer

he

rd o

r an

y ot

her

mig

rato

ry m

ule

deer

her

d w

ithin

the

Mam

mot

h La

kes

vici

nity

as

dete

rmin

ed b

y th

e C

DFG

. Th

e am

ount

of

acre

age

to b

e pu

rcha

sed

or m

ade

part

of a

co

nser

vatio

n ea

sem

ent (

“rep

lace

men

t lan

d”) t

o of

fset

the

loss

of m

ule

deer

hab

itat b

y th

is pr

ojec

t sh

all

be d

eter

min

ed b

y th

e C

DFG

, an

d ba

sed

upon

the

rec

omm

enda

tion

of a

qu

alifi

ed b

iolo

gist.

The

loca

tion

and

quan

tity

of re

plac

emen

t lan

d sh

all b

e ba

sed

upon

the

acre

age

of d

eer h

abita

t affe

cted

by

the

deve

lopm

ent a

nd th

e co

mpa

rativ

e be

nefit

s or v

alue

to

the

mul

e de

er h

erd

of t

he h

abita

t be

ing

rem

oved

by

this

proj

ect

to t

he a

rea

bein

g ac

quire

d or

pro

tect

ed.

Cons

eque

ntly

, the

CD

FG s

hall

not b

e re

quire

d to

util

ize

a sim

ple

rem

oval

to re

plac

emen

t rat

io, b

ut s

hall

be p

erm

itted

to c

onsid

er o

ther

fact

ors

such

as

the

qual

ity a

nd q

uant

ity o

f pl

ant f

orag

ing

mat

eria

l in

the

rem

oval

are

a an

d th

e re

plac

emen

t ar

ea a

nd w

heth

er th

e re

plac

emen

t are

a la

nd se

rves

to p

rote

ct im

porta

nt la

nds i

n th

e w

inte

r ra

nge,

mig

ratio

n co

rrido

r an

d/or

the

hold

ing

area

for

the

herd

. In

lieu

of

prov

idin

g fo

r re

plac

emen

t la

nd,

the

CDFG

may

app

rove

oth

er m

eans

rec

omm

ende

d by

a q

ualif

ied

biol

ogist

by

whi

ch th

e ap

plic

ant

shal

l pr

otec

t or

enha

nce

habi

tat

for

the

Roun

d V

alle

y m

ule

deer

her

d or

any

oth

er m

igra

ting

mul

e de

er h

erd

with

in t

he M

amm

oth

Lake

s vi

cini

ty, s

uch

as e

rect

ing

fenc

ing

alon

g U

.S. H

ighw

ay 3

95 to

pro

tect

the

deer

her

d fro

m

vehi

cula

r tra

ffic,

pro

vidi

ng m

onet

ary

cont

ribut

ions

tow

ard

the

cons

truct

ion

of a

dee

r un

derc

ross

ing

alon

g U

.S. H

ighw

ay 3

95, o

r oth

er m

eans

to e

nhan

ce th

e he

rd’s

hab

itat,

or

prot

ect t

he h

erd,

that

is ro

ughl

y pr

opor

tiona

l to

the

impa

ct o

n th

e de

er h

erd

of th

e lo

ss o

f

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-26

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

the

Proj

ect.

Im

plem

enta

tion

of M

itiga

tion

Mea

sure

BIO

-4c

wou

ld f

urth

er

redu

ce p

oten

tial

impa

cts

to d

eer

to a

les

s-th

an-s

igni

fican

t le

vel.

Miti

gatio

n M

easu

re B

IO-4

c in

clud

es a

dditi

onal

goo

d w

ildlif

e m

anag

emen

t pr

actic

es t

o th

ose

outli

ned

in M

itiga

tion

Mea

sure

BIO

-1e

abov

e.

Mea

sure

s ar

e co

nsist

ent

with

goa

ls an

d po

licie

s in

the

Tow

n’s

1987

Gen

eral

Pla

n (e

.g.,

1987

Gen

eral

Pl

an –

Wild

life

Reso

urce

s Goa

l 2 a

nd P

olic

y 4)

.

The

golf

cour

se v

eget

atio

n an

d as

soci

ated

hab

itats

coul

d at

tract

dee

r, le

adin

g to

th

e re

ques

t for

dep

reda

tion

perm

its a

nd/o

r co

nstru

ctio

n of

dee

r-pro

of f

enci

ng.

Such

req

uest

wou

ld b

e co

nsid

ered

pot

entia

lly s

igni

fican

t im

pact

s be

caus

e th

ey

wou

ld r

esul

t in

dire

ct t

ake

of d

eer

and

inte

rfere

with

mov

emen

t pa

ttern

s, re

spec

tivel

y.

Impl

emen

tatio

n of

goo

d w

ildlif

e m

anag

emen

t pra

ctic

es o

utlin

ed

in M

itiga

tion

Mea

sure

BIO

-4c

wou

ld re

duce

thes

e ad

ditio

nal i

mpa

cts

to d

eer t

o le

ss th

an si

gnifi

cant

.

As d

iscus

sed

in m

ore

deta

il in

the

Wild

life

Mov

emen

t Cor

ridor

s sec

tion,

a sm

all

num

ber o

f dee

r fro

m th

e Ro

und

Val

ley

herd

may

rem

ain

in th

e M

amm

oth

area

du

ring

the

sum

mer

, an

d ha

ve b

een

docu

men

ted

as u

sing

a fa

wni

ng s

ite

sout

hwes

t of

the

Proj

ect s

ite.

Giv

en th

e di

stanc

e be

twee

n th

e Pr

ojec

t site

and

fa

wni

ng s

ite,

cons

truct

ion

and

oper

atio

n of

the

Pro

ject

is

not

likel

y to

su

bsta

ntia

lly a

ffect

use

of t

his n

ativ

e w

ildlif

e nu

rser

y sit

e, re

sulti

ng in

less

-than

-sig

nific

ant i

mpa

cts.

deer

her

d ha

bita

t cau

sed

by th

e pr

ojec

t (th

e “i

n lie

u pr

otec

tion

prog

ram

”).

The

prop

osed

land

pro

tect

ion

agre

emen

t or

in li

eu p

rote

ctio

n pr

ogra

m s

hall

be p

repa

red

by th

e ap

plic

ant i

n cl

ose

cons

ulta

tion

with

the

Tow

n, C

DFG

and

dire

ctly

affe

cted

par

ties

(i.e.

, th

e se

ller(s

) of

the

con

serv

atio

n ea

sem

ent

or t

he r

ecip

ient

s of

the

mon

etar

y co

ntrib

utio

ns u

nder

the

in

lieu

prog

ram

). P

rior

to t

he o

nset

of

cons

truct

ion

activ

ities

as

soci

ated

with

the

deve

lopm

ent o

f the

new

gol

f cou

rse,

loca

ted

on th

ose

porti

ons

of th

e sit

e th

at h

ave

histo

rical

ly b

een

deer

hab

itat,

the

Tow

n sh

all r

ecei

ve a

sig

ned

copy

of t

he

land

pro

tect

ion

agre

emen

t, ex

ecut

ed b

y al

l dire

ctly

affe

cted

par

ties

as d

efin

ed a

bove

, or

obta

in w

ritte

n co

nfirm

atio

n fro

m C

DFG

of

CDFG

’s a

ppro

val

of t

he i

n lie

u pr

otec

tion

prog

ram

pro

pose

d by

the

appl

ican

t. C

onstr

uctio

n ac

tiviti

es in

clud

e ve

geta

tion

clea

ring

and

grub

bing

and

gra

ding

. In

all

even

ts, im

plem

enta

tion

of th

e ap

prov

ed la

nd p

rote

ctio

n ag

reem

ent o

r in

lieu

prot

ectio

n pr

ogra

m s

hall

be c

omm

ence

d to

the

CDFG

’s s

atisf

actio

n,

prio

r to

an

y gr

adin

g of

th

e ap

prox

imat

ely

46

acre

s of

im

pact

ed

deer

ha

bita

t.

Impl

emen

tatio

n sh

all b

e co

mpl

eted

in s

tage

s, to

the

satis

fact

ion

of th

e CD

FG, s

o as

to

ensu

re th

at th

e m

itiga

tion

occu

rs w

ithin

a su

ffici

ently

shor

t per

iod

of ti

me

afte

r the

impa

ct

has

occu

rred,

in o

rder

to m

inim

ize

any

poss

ibili

ty o

f an

unm

itiga

ted

impa

ct.

The

Tow

n w

ill r

eser

ve t

he o

ptio

n to

del

ay t

he o

nset

of

cons

truct

ion

activ

ities

in

the

even

t it

dete

rmin

es t

hat

impl

emen

tatio

n of

the

pro

pose

d la

nd p

rote

ctio

n ag

reem

ent

or i

n lie

u pr

otec

tion

prog

ram

has

bee

n un

duly

del

ayed

or o

bstru

cted

by

the

appl

ican

t.

Miti

gatio

n M

easu

re B

IO-4

b

Maj

or c

onstr

uctio

n ac

tiviti

es (e

.g.,

vege

tatio

n cl

earin

g an

d gr

ubbi

ng, a

nd g

radi

ng) w

ithin

th

e de

velo

pmen

t ar

ea s

outh

of

Old

Mam

mot

h Ro

ad s

hall

not

occu

r w

hen

signi

fican

t nu

mbe

rs o

f mig

ratin

g de

er a

re p

rese

nt in

the

Proj

ect v

icin

ity (g

ener

ally

dur

ing

the

perio

d fro

m A

pril

15 t

hrou

gh J

une

1 an

d fro

m O

ctob

er 1

thr

ough

Nov

embe

r 15

) to

avo

id

pote

ntia

l adv

erse

impa

cts

to th

e R

ound

Val

ley

mul

e de

er h

erd

usin

g th

e Sh

erw

in h

oldi

ng

area

and

Mam

mot

h Ro

ck m

igra

tion

rout

e du

ring

the

sprin

g an

d fa

ll m

igra

tion

perio

ds.

Beca

use

the

actu

al d

ates

of

cons

truct

ion

will

be

base

d on

dee

r ar

rival

at a

nd d

epar

ture

fro

m t

he P

roje

ct v

icin

ity,

whi

ch w

ill d

epen

d on

wea

ther

and

sno

w c

ondi

tions

, a

mon

itorin

g pr

ogra

m sh

all b

e de

velo

ped

and

impl

emen

ted,

in c

oord

inat

ion

with

CD

FG a

nd

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-27

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

othe

r ap

prop

riate

age

ncie

s, to

det

erm

ine

the

pres

ence

of

deer

in

the

area

. A

ll m

ajor

co

nstru

ctio

n ac

tiviti

es s

hall

be c

ondu

cted

dur

ing

the

inte

rim p

erio

ds b

etw

een

sprin

g an

d fa

ll m

igra

tion

perio

ds o

nly.

Miti

gatio

n M

easu

re B

IO-4

c

In a

dditi

on t

o th

e go

od w

ildlif

e m

anag

emen

t pr

actic

es o

utlin

ed i

n M

itiga

tion

Mea

sure

BI

O-1

e, th

e fo

llow

ing

habi

tat m

anag

emen

t pra

ctic

es sh

all b

e im

plem

ente

d:

• N

o fe

nces

or

othe

r po

tent

ial i

mpe

dim

ents

to d

eer

and

othe

r w

ildlif

e m

ovem

ent

shal

l be

insta

lled

alon

g th

e ou

ter e

dges

of t

he P

roje

ct s

ite, p

artic

ular

ly a

long

the

sout

hern

and

eas

tern

Pro

ject

bou

ndar

ies f

or d

eer.

• N

o de

pred

atio

n pe

rmits

for

con

trolli

ng d

eer

shal

l be

req

ueste

d.

The

appl

ican

t re

cogn

izes

that

the

deve

lopm

ent o

f lan

ds w

ithin

dee

r hab

itat c

onta

ins

asso

ciat

ed

risks

of d

amag

e, w

hich

is a

ccep

tabl

e.

• Re

quire

m

anag

emen

t pr

actic

es

of

land

scap

es

treat

ed

with

pe

stici

des

that

m

inim

ize

low

-leve

l ex

posu

res

and

sub-

leth

al e

ffect

s to

wild

life.

H

erbi

cide

s, pe

stici

des,

and

fung

icid

e ap

plic

atio

n re

cord

s an

d ot

her

land

scap

e an

d tu

rfgra

ss

man

agem

ent r

ecor

ds s

hall

be m

ade

avai

labl

e to

the

Tow

n or

CD

FG a

t any

tim

e up

on re

ques

t.

Impa

ct B

IO-5

Con

form

ance

with

Tow

n Po

licie

s and

Ord

inan

ces

A to

tal o

f 106

tree

s ha

ve b

een

iden

tifie

d w

ithin

the

deve

lopm

ent a

rea

that

mee

t th

e m

inim

um s

ize

(six

inch

es in

dia

met

er)

to r

equi

re a

ppro

val f

rom

the

Tow

n pr

ior

to

rem

oval

(T

own

of

Mam

mot

h La

kes

Mun

icip

al

Cod

e,

Chap

ter

17.1

6.05

0).

Bec

ause

all

the

nativ

e tre

es o

ver

six i

nche

s ar

e in

tend

ed t

o be

re

tain

ed a

nd a

ny p

ropo

sed

for r

emov

al fo

llow

ing

the

arbo

rist’s

revi

ew w

ould

be

subj

ect

to a

ppro

val

from

the

Tow

n pr

ior

to t

heir

rem

oval

, the

Pro

ject

wou

ld

have

no

impa

ct o

n tre

es re

gula

ted

by th

e To

wn.

As

disc

usse

d ab

ove

in I

mpa

ct B

IO-2

Sen

sitiv

e N

atur

al C

omm

uniti

es, i

ndire

ct,

unan

ticip

ated

im

pact

s to

wat

ers

and

wet

mea

dow

hab

itat

coul

d oc

cur

durin

g

No

addi

tiona

l miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-28

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

cons

truct

ion

activ

ities

with

in t

he d

evel

opm

ent

area

in

the

adja

cent

bas

in

sage

brus

h ha

bita

t no

rth o

f O

ld M

amm

oth

Roa

d, s

uch

as i

nadv

erte

nt d

amag

e fro

m e

quip

men

t or

veh

icle

sta

ging

, or

eros

ion.

Su

ch i

mpa

cts

wou

ld c

onfli

ct

with

goa

ls an

d po

licie

s in

the

Tow

n’s

1987

Gen

eral

Pla

n, s

peci

fical

ly N

atur

al

Veg

etat

ive

Reso

urce

s Po

licy

3 an

d H

abita

t. H

owev

er,

impl

emen

tatio

n of

M

itiga

tion

Mea

sure

BIO

-2b,

req

uirin

g fe

ncin

g, m

onito

ring,

and

oth

er b

est

man

agem

ent p

ract

ices

, wou

ld re

duce

thes

e im

pact

s to

less

than

sign

ifica

nt.

The

Proj

ect

coul

d al

so r

esul

t in

inc

reas

ed w

ildlif

e an

d hu

man

int

erac

tions

, pa

rticu

larly

alo

ng th

e so

uthe

rn a

nd e

aste

rn P

roje

ct b

ound

arie

s w

here

dee

r an

d ot

her

wild

life

may

res

ide.

In

cide

ntal

hum

an c

onta

ct a

nd i

ntru

sion

impa

cts

wou

ld c

onfli

ct w

ith th

e go

als

and

polic

ies

in th

e To

wn’

s 19

87 G

ener

al P

lan,

sp

ecifi

cally

W

ildlif

e Re

sour

ces

Polic

y 3.

How

ever

, im

plem

enta

tion

of

Miti

gatio

n M

easu

re B

io-1

e an

d M

itiga

tion

Mea

sure

Bio

-4c,

whi

ch i

nclu

des

good

wild

life

habi

tat

man

agem

ent

prac

tices

suc

h as

lig

htin

g an

d fe

ncin

g re

stric

tions

, and

dom

estic

pet

con

trol,

wou

ld re

duce

thes

e im

pact

s to

a le

ss-th

an-

signi

fican

t lev

el.

Impa

ct B

IO-6

Co

nfor

man

ce w

ith A

dopt

ed H

abita

t Co

nser

vatio

n Pl

ans,

Nat

ural

Com

mun

ity C

onse

rvat

ion

Plan

, or

othe

r ap

prov

ed lo

cal,

regi

onal

, or

state

hab

itat c

onse

rvat

ion

plan

No

Hab

itat

Cons

erva

tion

Plan

s, N

atur

al C

omm

unity

Con

serv

atio

n Pl

ans

or

othe

r loc

al o

r reg

iona

l pla

ns h

ave

been

ado

pted

with

in th

e To

wn’

s U

GB

whi

ch

enco

mpa

sses

the

Pro

ject

site

, t

here

fore

, no

im

pact

s ar

e an

ticip

ated

and

no

miti

gatio

n w

ould

be

cons

ider

ed n

eces

sary

.

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Impa

ct B

IO-7

Cum

ulat

ive

Impa

cts

Spec

ial-S

tatu

s Spe

cies

The

mea

sure

s pre

scrib

ed to

miti

gatio

n su

ch im

pact

s und

er th

e Pr

ojec

t, an

d gi

ven

the

smal

l siz

e of

the

rela

ted

proj

ects

and/

or th

e lo

catio

n in

exi

sting

dev

elop

ed

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-29

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

area

s, th

ese

impa

cts

are

not a

ntic

ipat

ed to

be

cum

ulat

ivel

y co

nsid

erab

le w

hen

eval

uate

d w

ith o

ther

rela

ted

proj

ects

in th

e vi

cini

ty.

Sens

itive

Nat

ural

Com

mun

ities

Beca

use

of t

he P

roje

ct’s

des

ign

and

pres

crib

ed m

itiga

tion

mea

sure

s, th

e po

tent

ial a

dditi

on o

f re

late

d pr

ojec

ts im

pact

s to

the

Proj

ect’s

sen

sitiv

e na

tura

l co

mm

uniti

es’ i

mpa

cts a

re n

ot a

ntic

ipat

ed to

be

cum

ulat

ivel

y co

nsid

erab

le.

Mig

rato

ry D

eer

The

deer

hol

ding

are

a pl

ays s

uch

an in

tegr

al ro

le in

affe

ctin

g pr

oduc

tivity

of t

he

deer

her

d, r

emov

al o

f th

is ha

bita

t fro

m t

he p

ropo

sed

proj

ect

is co

nsid

ered

po

tent

ially

sig

nific

ant.

Whe

n im

pact

s to

mig

rato

ry d

eer

from

the

pro

pose

d pr

ojec

t’s a

re c

onsid

ered

col

lect

ivel

y w

ith r

elat

ed p

roje

cts

in th

e vi

cini

ty, t

hese

im

pact

s m

ay b

e cu

mul

ativ

ely

cons

ider

able

, as

the

y m

ay r

esul

t in

an

over

all

distu

rban

ce to

mul

e de

er m

igra

tion

alon

g th

e M

amm

oth

Roc

k co

rrido

r. G

iven

th

e sm

all s

ize

of th

e re

late

d pr

ojec

ts (e

spec

ially

rela

tive

to th

e pr

opos

ed P

roje

ct)

and/

or th

e lo

catio

n of

mos

t of

the

rela

ted

proj

ects

in e

xisti

ng d

evel

oped

are

as,

this

impa

ct t

o de

er m

igra

tion

hold

ing

area

is

not

cons

ider

ed c

umul

ativ

ely

signi

fican

t.

The

Roun

d V

alle

y he

rd o

nce

utili

zed

the

entir

e M

amm

oth

Lake

s ba

sin f

or it

s ho

ldin

g ar

ea a

nd m

igra

tion

corri

dor,

but

it h

as s

ince

bee

n pu

shed

fur

ther

eas

t an

d so

uth

due

to d

evel

opm

ent w

ithin

the

Tow

n of

Mam

mot

h La

kes

over

the

past

cent

ury.

H

owev

er,

the

impl

emen

tatio

n of

Pro

ject

miti

gatio

n m

easu

res,

incl

udin

g th

e pr

opos

ed la

nd p

rote

ctio

n ag

reem

ent o

r in

lieu

prot

ectio

n pr

ogra

m,

restr

ictio

ns o

n th

e co

nstru

ctio

n se

ason

, an

d im

plem

enta

tion

of g

ood

wild

life

man

agem

ent

prac

tices

, th

e im

pact

s to

mig

rato

ry d

eer

hold

ing

area

fro

m t

he

Proj

ect a

nd p

ast p

roje

cts i

s not

exp

ecte

d to

be

cum

ulat

ivel

y co

nsid

erab

le.

Inyo

Nat

iona

l For

est –

Rec

reat

iona

l Im

pact

s to

Biol

ogic

al R

esou

rces

How

ever

, with

the

mea

sure

s pro

pose

d to

miti

gate

impa

cts u

nder

the

Proj

ect,

and

give

n th

e sm

all

size

of t

he r

elat

ed p

roje

cts

as c

ompa

red

to t

he P

roje

ct, t

hese

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-30

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

impa

cts

are

not

antic

ipat

ed t

o be

cum

ulat

ivel

y co

nsid

erab

le o

r sig

nific

antly

ad

vers

e w

hen

eval

uate

d w

ith o

ther

rela

ted

proj

ects

in th

e vi

cini

ty.

The

antic

ipat

ed p

opul

atio

n in

crea

se m

ay h

ave

signi

fican

t im

pact

s up

on s

peci

al-

statu

s spe

cies

with

in th

e ad

jace

nt In

yo N

atio

nal F

ores

t.

Impa

cts

to n

atur

al r

esou

rces

with

in th

e In

yo N

atio

nal F

ores

t fro

m r

ecre

atio

nal

use

are

expe

cted

to in

crea

se d

ue to

the

Tow

n’s

cum

ulat

ive

popu

latio

n in

crea

se

from

the

proj

ect a

nd o

ther

regi

onal

resid

entia

l pro

ject

s, an

d th

ese

impa

cts

may

be

con

sider

ed c

umul

ativ

ely

cons

ider

able

or

signi

fican

tly a

dver

se;

how

ever

, id

entif

icat

ion

and

quan

tific

atio

n of

such

impa

cts w

ould

be

spec

ulat

ive

unde

r the

cu

rrent

ana

lysis

. M

uch

of t

he r

ecre

atio

nal

Fore

st us

es f

rom

the

cum

ulat

ive

popu

latio

n gr

owth

in

the

area

will

rev

olve

aro

und

thes

e in

crea

singl

y po

pula

r ou

tdoo

r act

iviti

es.

Com

plia

nce

with

the

Tow

n’s

2007

Gen

eral

Pla

n, r

equi

ring

the

Tow

n to

wor

k cl

osel

y w

ith a

genc

ies,

incl

udin

g th

e In

yo N

atio

nal

Fore

st, t

o en

sure

tha

t th

e re

gion

al n

atur

al e

cosy

stem

is

mai

ntai

ned,

will

not

res

ult

in c

umul

ativ

ely

cons

ider

able

impa

cts

to s

ensit

ive

natu

ral r

esou

rces

in th

e In

yo N

atio

nal F

ores

t fro

m in

crea

sed

popu

latio

n an

d re

crea

tion.

CU

LTU

RA

L R

ESO

UR

CES

(CU

LT)

Impa

ct C

ULT

-1 I

mpa

cts t

o K

nown

Cul

tura

l Res

ourc

es

Miti

gatio

n M

easu

re C

ULT

-1

As

disc

usse

d in

the

“En

viro

nmen

tal

Setti

ng”

abov

e, t

he P

roje

ct s

ite a

nd

imm

edia

te v

icin

ity h

ave

been

sub

ject

ed to

mul

tiple

cul

tura

l res

ourc

es s

tudi

es.

Two

know

n re

sour

ces,

CA

-MN

O-3

, w

hich

inc

lude

s re

mna

nts

of t

he “

Old

M

amm

oth”

tow

nsite

, and

CA

-MN

O-8

93H

, the

Bod

le D

itch,

are

loca

ted

with

in

the

Proj

ect s

ite.

Follo

win

g is

a di

scus

sion

of th

e Pr

ojec

t’s im

pact

s w

ith re

spec

t to

thes

e kn

own

prev

ious

ly re

cord

ed c

ultu

ral r

esou

rces

.

CA-M

NO

-3:

The

Proj

ect h

as th

e po

tent

ial t

o im

pact

CA

-MN

O-3

sou

th o

f Old

M

amm

oth

Road

. B

ecau

se t

he s

ite w

as c

appe

d w

ith n

on-c

ultu

ral

fill,

it is

For

the

porti

on o

f C

A-M

NO

-3 lo

cate

d no

rth o

f O

ld M

amm

oth

Road

the

appl

ican

t sha

ll im

plem

ent a

ny o

f the

follo

win

g m

easu

res

to re

duce

the

signi

fican

t im

pact

to a

less

than

sig

nific

ant l

evel

:

• pl

an c

onstr

uctio

n to

avo

id th

e sit

e,

• de

ed c

onse

rvat

ion

ease

men

ts,

• ca

p th

e sit

e pr

ior t

o co

nstru

ctio

n, o

r

• pe

rform

arc

haeo

logi

cal d

ata

reco

very

.

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-31

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

unlik

ely

that

the

min

or, P

roje

ct-re

late

d ch

ange

s to

the

golf

cour

se a

t the

gro

und

surfa

ce w

ill i

mpa

ct t

he s

ite.

As

such

, any

pro

ject

-rela

ted

impa

cts

asso

ciat

ed

with

alte

ratio

ns to

the

golf

cour

se to

Site

CA

-MN

O-3

wou

ld b

e co

nsid

ered

less

th

an si

gnifi

cant

und

er C

EQA

.

The

Proj

ect h

as th

e po

tent

ial t

o im

pact

the

signi

fican

t pre

histo

ric a

nd h

istor

ic

com

pone

nts

of C

A-M

NO

-3 n

orth

of O

ld M

amm

oth

Roa

d. T

he p

ortio

n of

this

site

that

inc

lude

s th

e “O

ld M

amm

oth”

tow

nsite

is

also

con

sider

ed s

igni

fican

t be

caus

e it

mee

ts cr

iterio

n 1

and

4 of

the

Cal

iforn

ia R

egist

er c

riter

ia f

or i

ts as

soci

atio

n w

ith e

vent

s im

porta

nt to

regi

onal

hist

ory.

The

refo

re, P

roje

ct-re

late

d im

pact

s to

Site

CA

-MN

O-3

in

this

area

wou

ld b

e co

nsid

ered

pot

entia

lly

signi

fican

t un

der

CEQ

A.

As

such

, m

itiga

tion

mea

sure

s ar

e re

com

men

ded

belo

w th

at w

ould

redu

ce a

ny s

uch

impa

cts

to c

ultu

ral r

esou

rces

to a

less

-than

-sig

nific

ant l

evel

.

Impa

ct C

ULT

-2 I

mpa

cts t

o U

nkno

wn

Cul

tura

l Res

ourc

es

Miti

gatio

n M

easu

res C

ULT

-2a

thro

ugh

2f

Porti

ons

of t

he P

roje

ct s

ite n

orth

of

Old

Mam

mot

h Ro

ad a

re s

ensit

ive

for

preh

istor

ic a

nd h

istor

ic a

rcha

eolo

gica

l res

ourc

es, a

nd h

uman

rem

ains

. Bu

ried

(pre

viou

sly u

nrec

orde

d) p

rehi

storic

and

hist

oric

arc

haeo

logi

cal d

epos

its m

ay b

e pr

esen

t w

ithin

the

Pro

ject

site

. I

n ad

ditio

n, p

revi

ously

uni

dent

ified

fea

ture

s an

d/or

dia

gnos

tic a

rtifa

cts

with

in p

revi

ously

rec

orde

d sit

es m

ay b

e pr

esen

t w

ithin

the

Pro

ject

site

. G

roun

d-di

sturb

ing

cons

truct

ion

asso

ciat

ed w

ith t

he

Proj

ect

has

the

pote

ntia

l to

res

ult

in s

igni

fican

t im

pact

s to

unk

now

n cu

ltura

l re

sour

ces.

As

such

, miti

gatio

n m

easu

res

are

reco

mm

ende

d be

low

that

wou

ld

redu

ce a

ny su

ch im

pact

s to

unkn

own

cultu

ral r

esou

rces

to a

less

-than

-sig

nific

ant

leve

l.

Miti

gatio

n M

easu

re C

ULT

-2a

A M

itiga

tion

Mon

itorin

g an

d Re

porti

ng P

lan

(MM

RP)

shal

l be

prep

ared

by

a qu

alifi

ed

arch

aeol

ogist

prio

r to

Proj

ect c

onstr

uctio

n fo

r the

por

tion

of th

e Pr

ojec

t site

nor

th o

f Old

M

amm

oth

Road

. T

he M

MRP

sha

ll ou

tline

the

pro

toco

l fo

r no

tific

atio

n, t

empo

rary

pr

otec

tion,

doc

umen

tatio

n, a

nd e

valu

atio

n of

pre

viou

sly u

nrec

orde

d cu

ltura

l re

sour

ces

enco

unte

red

durin

g co

nstru

ctio

n, a

s w

ell a

s m

itiga

tion

of p

roje

ct-re

late

d im

pact

s to

any

su

ch r

esou

rces

tha

t ar

e co

nsid

ered

sig

nific

ant

unde

r CE

QA

, an

d th

e cu

ratio

n of

any

ar

tifac

ts or

sam

ples

col

lect

ed i

n th

e fie

ld.

The

MM

RP s

hall

incl

ude

a sa

mpl

e da

ta

reco

very

pla

n an

d a

cura

tion

agre

emen

t. T

his

docu

men

t sh

all

be c

ompl

eted

prio

r to

co

mm

ence

men

t of

an

y gr

ound

-dist

urbi

ng

activ

ity

asso

ciat

ed

with

th

e Pr

ojec

t sit

e (in

clud

ing

clea

ring,

bru

shin

g, g

rubb

ing,

veg

etat

ion

rem

oval

, disk

ing,

gra

ding

, tre

nchi

ng,

exca

vatio

n, a

nd/o

r bor

ing)

.

Miti

gatio

n M

easu

re C

UL

T-2

b

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-32

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

A q

ualif

ied

arch

aeol

ogist

sha

ll m

onito

r all

grou

nd-d

istur

bing

con

struc

tion

in n

ativ

e so

ils

for

the

porti

on o

f th

e Pr

ojec

t sit

e no

rth o

f O

ld M

amm

oth

Road

. (

Cons

truct

ion

wor

k w

ithin

sto

ckpi

le m

ater

ial d

oes n

ot re

quire

mon

itorin

g.)

The

cons

truct

ion

mon

itor s

hall

be

supp

lied

with

map

s an

d sit

e re

cord

s fo

r the

pre

viou

sly re

cord

ed c

ultu

ral r

esou

rces

with

in

the

Proj

ect s

ite, s

o th

at s

he/h

e ca

n di

sting

uish

new

res

ourc

es f

rom

thos

e th

at h

ave

been

pr

evio

usly

rec

orde

d an

d ev

alua

ted.

Th

e m

onito

r sh

all

prep

are

a da

ily m

onito

ring

log

reco

rdin

g th

e ty

pe

of

wor

k m

onito

red,

so

il co

nditi

ons,

disc

over

ies,

and

gene

ral

obse

rvat

ions

.

Miti

gatio

n M

easu

re C

ULT

-2c

Prev

ious

ly u

nkno

wn

cultu

ral

reso

urce

s id

entif

ied

durin

g Pr

ojec

t co

nstru

ctio

n sh

all

be

prot

ecte

d th

roug

h te

mpo

rary

red

irect

ion

of w

ork

and

poss

ibly

oth

er m

etho

ds s

uch

as

fenc

ing

(to b

e ou

tline

d in

the

MM

RP)

unt

il fo

rmal

ly e

valu

ated

for

sig

nific

ance

und

er

CEQ

A.

In t

he e

vent

tha

t pr

evio

usly

unr

ecor

ded

cultu

ral

reso

urce

s ar

e ex

pose

d du

ring

cons

truct

ion,

the

mon

itor

shal

l be

em

pow

ered

to

tem

pora

rily

halt

cons

truct

ion

in t

he

imm

edia

te v

icin

ity o

f the

disc

over

y w

hile

it is

doc

umen

ted

and

eval

uate

d fo

r sig

nific

ance

. Co

nstru

ctio

n ac

tiviti

es m

ay c

ontin

ue i

n ot

her

area

s. I

f th

e di

scov

ery

is ev

alua

ted

as

signi

fican

t un

der

CEQ

A,

addi

tiona

l w

ork

such

as

data

rec

over

y ex

cava

tion

may

be

war

rant

ed to

miti

gate

pro

ject

-rela

ted

impa

cts t

o a

less

-than

-sig

nific

ant l

evel

.

Miti

gatio

n M

easu

re C

UL

T-2

d

Proc

edur

es o

f con

duct

follo

win

g th

e di

scov

ery

of h

uman

rem

ains

hav

e be

en m

anda

ted

by

Hea

lth a

nd S

afet

y Co

de §

7050

.5, P

ublic

Res

ourc

es C

ode

§509

7.98

and

the

Cal

iforn

ia

Code

of

Regu

latio

ns §

1506

4.5(

e) (

CEQ

A).

Acc

ordi

ng t

o th

e pr

ovisi

ons

in C

EQA

, if

hum

an r

emai

ns a

re e

ncou

nter

ed a

t th

e sit

e, a

ll w

ork

in t

he i

mm

edia

te v

icin

ity o

f th

e di

scov

ery

shal

l cea

se a

nd n

eces

sary

ste

ps to

ens

ure

the

inte

grity

of

the

imm

edia

te a

rea

shal

l be

take

n.

The

Mon

o C

ount

y Co

rone

r sh

all b

e no

tifie

d im

med

iate

ly. T

he C

oron

er

shal

l the

n de

term

ine

whe

ther

the

rem

ains

are

Nat

ive

Am

eric

an.

If th

e Co

rone

r det

erm

ines

th

e re

mai

ns a

re N

ativ

e A

mer

ican

, the

Cor

oner

sha

ll no

tify

the

NA

HC

with

in 2

4 ho

urs,

who

will

, in

turn

, not

ify th

e pe

rson

the

NA

HC

iden

tifie

s as

the

mos

t lik

ely

desc

ende

nt

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-33

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

(MLD

) of a

ny h

uman

rem

ains

. Fu

rther

act

ions

shal

l be

dete

rmin

ed, i

n pa

rt, b

y th

e de

sires

of

the

MLD

. Th

e M

LD h

as 2

4 ho

urs t

o m

ake

reco

mm

enda

tions

rega

rdin

g th

e di

spos

ition

of

the

rem

ains

follo

win

g no

tific

atio

n fro

m th

e N

AH

C of

the

disc

over

y. I

f the

MLD

doe

s no

t mak

e re

com

men

datio

ns w

ithin

24

hour

s, th

e ow

ner s

hall,

with

app

ropr

iate

dig

nity

, re-

inte

rn

the

rem

ains

in

an

ar

ea

of

the

prop

erty

se

cure

fro

m

furth

er

distu

rban

ce.

Alte

rnat

ivel

y, if

the

owne

r doe

s not

acc

ept t

he M

LD’s

reco

mm

enda

tions

, the

ow

ner o

r the

de

scen

dent

may

requ

est m

edia

tion

by th

e N

AH

C.

Miti

gatio

n M

easu

re C

ULT

-2e

A m

onito

ring

repo

rt sh

all

be p

repa

red

upon

com

plet

ion

of c

onstr

uctio

n m

onito

ring,

su

mm

ariz

ing

the

resu

lts o

f the

mon

itorin

g ef

fort.

Site

reco

rds

for a

ny n

ewly

reco

rded

or

upda

ted

cultu

ral r

esou

rces

shal

l be

appe

nded

to th

e m

onito

ring

repo

rt.

Miti

gatio

n M

easu

re C

ULT

-2f

Arti

fact

s or

sam

ples

col

lect

ed d

urin

g th

e co

urse

of

cons

truct

ion

mon

itorin

g an

d an

y te

sting

or

data

rec

over

y as

soci

ated

with

new

ly d

iscov

ered

res

ourc

es s

hall

be c

urat

ed in

pe

rpet

uity

in a

n ap

prop

riate

faci

lity

upon

com

plet

ion

of a

naly

sis a

nd p

roce

ssin

g. �

Impa

ct C

ULT

-3 C

umul

ativ

e Im

pact

s

Impl

emen

tatio

n of

the

Proj

ect i

n co

mbi

natio

n w

ith th

e re

late

d pr

ojec

ts w

ould

re

sult

in t

he

deve

lopm

ent

of

addi

tiona

l lo

w-

to h

igh-

dens

ity r

esid

entia

l, co

mm

erci

al,

insti

tutio

nal,

publ

ic r

esor

t, an

d in

dustr

ial

land

use

s. I

mpa

cts

to

cultu

ral

reso

urce

s (in

clud

ing

histo

ric,

arch

aeol

ogic

al,

and

pale

onto

logi

cal

reso

urce

s, as

wel

l as h

uman

rem

ains

) ten

d to

be

site-

spec

ific

and

are

asse

ssed

on

a sit

e-by

-site

bas

is. T

he e

xten

t of t

he c

ultu

ral r

esou

rces

(if a

ny) t

hat o

ccur

at t

he

rela

ted

proj

ect s

ites

is ge

nera

lly u

nkno

wn

and,

as

such

, it i

s no

t kno

wn

whe

ther

an

y of

the

rel

ated

pro

ject

s w

ould

res

ult

in s

igni

fican

t im

pact

s to

cul

tura

l re

sour

ces.

How

ever

, sim

ilar t

o th

e Pr

ojec

t, su

ch d

eter

min

atio

ns w

ould

be

mad

e on

a c

ase-

by-c

ase

basis

and

, if n

eces

sary

, the

app

lican

ts of

the

rela

ted

proj

ects

wou

ld

be

requ

ired

to

impl

emen

t th

e ap

prop

riate

m

itiga

tion

mea

sure

s.

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-34

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

Furth

erm

ore,

th

e an

alys

is of

th

e Pr

ojec

t’s

impa

cts

to

cultu

ral

reso

urce

s co

nclu

ded

that

, th

roug

h th

e im

plem

enta

tion

of

the

miti

gatio

n m

easu

res

reco

mm

ende

d ab

ove,

pro

ject

-rela

ted

impa

cts t

o cu

ltura

l res

ourc

es w

ould

be

less

th

an s

igni

fican

t. T

here

fore

, the

Pro

ject

wou

ld n

ot c

ontri

bute

to a

ny p

oten

tial

cum

ulat

ive

impa

cts,

and

cum

ulat

ive

impa

cts

to c

ultu

ral r

esou

rces

wou

ld b

e le

ss

than

sign

ifica

nt a

nd n

o m

itiga

tion

mea

sure

s are

requ

ired.

GEO

LOG

Y &

SO

ILS

(GEO

)

Impa

ct G

EO

-1 F

ault

Rupt

ure

The

Proj

ect s

ite is

not

loca

ted

with

in e

ither

Ear

thqu

ake

Faul

t Zon

es o

r Alq

uist-

Prio

lo H

azar

d Zo

nes

and

the

pote

ntia

l for

faul

t rup

ture

is c

onsid

ered

to b

e lo

w.

Ther

efor

e, P

roje

ct im

pact

s rel

ated

to fa

ult r

uptu

re w

ould

be

less

than

sign

ifica

nt

and

no m

itiga

tion

mea

sure

s are

requ

ired.

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Impa

ct G

EO-2

Stro

ng S

eism

ic G

roun

d Sh

akin

g

The

Proj

ect s

ite is

loca

ted

in a

Sei

smic

Zon

e 4

base

d on

199

7 U

nifo

rm B

uild

ing

Code

(UBC

) and

200

1 Ca

lifor

nia

Build

ing

Code

(CBC

). H

owev

er, t

he P

roje

ct

appl

ican

t wou

ld b

e re

quire

d to

des

ign

and

cons

truct

the

Proj

ect i

n co

nfor

man

ce

to th

e m

ost r

ecen

tly a

dopt

ed C

BC d

esig

n pa

ram

eter

s and

the

Tow

n’s M

unic

ipal

Co

de f

or s

eism

ic d

esig

n.

Ther

efor

e, c

onfo

rman

ce w

ith c

urre

nt U

BC/C

BC

requ

irem

ents,

as

wel

l as

the

Tow

n’s

seism

ic d

esig

n re

quire

men

ts w

ould

redu

ce

the

pote

ntia

l fo

r str

uctu

res

on t

he P

roje

ct s

ite t

o su

stain

dam

age

durin

g an

ea

rthqu

ake

even

t, an

d Pr

ojec

t im

pact

s re

late

d to

gro

und

shak

ing

wou

ld b

e le

ss

than

sign

ifica

nt a

nd n

o m

itiga

tion

mea

sure

s are

requ

ired.

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-35

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

Impa

ct G

EO-3

Liq

uefa

ctio

n an

d So

il In

stabi

litie

s M

itiga

tion

Mea

sure

s GEO

-3a

thro

ugh

3c

Geo

tech

nica

l inv

estig

atio

n on

the

Proj

ect s

ite in

dica

tes t

hat:

1) u

p to

seve

n fe

et

of f

ine

to c

oars

e de

nse

undo

cum

ente

d fil

l is

pres

ent

at a

few

loc

atio

ns,

2)

tops

oil/a

lluvi

al d

epos

its c

onsis

ting

of lo

ose

sand

and

silt

y sa

nd b

lank

et th

e sit

e be

twee

n th

e de

pths

of a

ppro

xim

atel

y 1-

1/2

to 1

0 fe

et, a

nd 3

) per

ched

wat

er m

ay

deve

lop

at t

he s

ite.

Gro

und

failu

res

asso

ciat

ed w

ith s

oil

lique

fact

ion

incl

ude

post-

lique

fact

ion

reco

nsol

idat

ion,

late

ral s

prea

ding

, and

loss

of b

earin

g su

ppor

t.

Impa

cts w

ould

be

signi

fican

t. U

ndoc

umen

ted

fill a

nd lo

ose

tops

oil/a

lluvi

um a

re

loca

ted

on th

e Pr

ojec

t site

with

app

roxi

mat

e de

pth

max

imum

s of s

even

feet

and

te

n fe

et b

elow

the

grou

nds s

urfa

ce.

Ther

efor

e, re

mov

al o

f the

se so

ils m

ay c

ause

a

signi

fican

t im

pact

.

Miti

gatio

n M

easu

re G

EO-3

a L

ique

fact

ion

and

Soil

Inst

abili

ties

Prio

r to

issu

ance

of

build

ing

perm

its a

nd g

radi

ng a

ctiv

ities

, a d

esig

n le

vel g

eote

chni

cal

repo

rt sh

all b

e pr

epar

ed a

nd a

ll re

com

men

datio

ns in

the

repo

rt sh

all b

e ad

here

d to

. Th

e de

sign-

leve

l geo

tech

nica

l rep

ort s

hall

eval

uate

the

pote

ntia

l for

loca

lized

liqu

efac

tion

by

perfo

rmin

g su

pple

men

tal

subs

urfa

ce e

xplo

ratio

n (to

eva

luat

e th

e th

ickn

ess,

in p

lace

de

nsity

, fin

es c

onte

nt o

f th

e un

derly

ing

loos

e to

med

ium

soi

l and

gra

datio

n), l

abor

ator

y te

sting

, and

eng

inee

ring

anal

ysis.

Miti

gatio

n M

easu

re G

EO

-3b

Liq

uefa

ctio

n an

d So

il In

stab

ilitie

s

Impl

emen

t all

reco

mm

enda

tions

con

tain

ed w

ithin

thes

e sit

e-sp

ecifi

c ge

otec

hnic

al re

ports

, in

clud

ing

thos

e pe

rtain

ing

to s

ite p

repa

ratio

n, e

xcav

atio

n, fi

ll pl

acem

ent a

nd c

ompa

ctio

n;

foun

datio

ns;

conc

rete

sla

bs-o

n-gr

ade;

pav

emen

t de

sign;

lat

eral

ear

th p

ress

ures

and

re

sista

nce;

and

surfa

ce d

rain

age

cont

rol.

Miti

gatio

n M

easu

re G

EO-3

c L

ique

fact

ion

and

Soil

Inst

abili

ties

The

final

gra

ding

, dr

aina

ge,

and

foun

datio

n pl

ans

and

spec

ifica

tions

sha

ll be

pre

pare

d an

d/or

rev

iew

ed a

nd a

ppro

ved

by a

Reg

ister

ed G

eote

chni

cal

Engi

neer

and

Reg

ister

ed

Engi

neer

ing

Geo

logi

st.

In a

dditi

on,

upon

com

plet

ion

of c

onstr

uctio

n ac

tiviti

es,

the

Proj

ect

appl

ican

t sh

all

prov

ide

a fin

al s

tate

men

t in

dica

ting

whe

ther

the

wor

k w

as

perfo

rmed

in

ac

cord

ance

w

ith

Proj

ect

plan

s an

d sp

ecifi

catio

ns

and

with

th

e re

com

men

datio

ns o

f th

e Re

giste

red

Geo

tech

nica

l En

gine

er a

nd R

egist

ered

Eng

inee

ring

Geo

logi

st.

Less

Tha

n Si

gnifi

cant

Impa

ct G

EO

-4 C

yclic

Den

sific

atio

n

Cycl

ic s

oil d

ensif

icat

ion

is a

phen

omen

on in

whi

ch n

on-s

atur

ated

, coh

esio

nles

s so

il is

dens

ified

by

earth

quak

e vi

brat

ions

, res

ultin

g in

gro

und

surfa

ce se

ttlem

ent.

Cy

clic

den

sific

atio

n sh

ould

be

cons

ider

ed a

pot

entia

l min

or h

azar

d at

the

Proj

ect

site.

Dur

ing

a m

ajor

ear

thqu

ake

on a

nea

rby

porti

on o

f one

of t

he a

ctiv

e fa

ults,

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-36

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

stron

g gr

ound

sha

king

may

cau

se th

e lo

ose,

uns

atur

ated

allu

vial

soi

l to

dens

ify

and

settl

e. I

t is

estim

ated

that

up

to ½

inch

of c

yclic

den

sific

atio

n m

ay o

ccur

at

the

site.

Thi

s m

ay r

esul

t in

the

min

or s

urfa

ce i

mpr

ovem

ents,

suc

h as

min

or

crac

king

of

foun

datio

ns.

,Min

or c

rack

s in

fou

ndat

ion

and

othe

r m

inor

sur

face

im

prov

emen

ts w

ould

not

hav

e th

e po

tent

ial t

o re

pres

ent a

sub

stant

ial r

isk to

life

an

d pr

oper

ty.

Furth

erm

ore,

as

note

d, p

rior t

o iss

uanc

e of

bui

ldin

g pe

rmits

and

gr

adin

g ac

tiviti

es, a

des

ign

leve

l geo

tech

nica

l rep

ort s

hall

be p

repa

red

and

all

reco

mm

enda

tions

in

th

e re

port

shal

l be

ad

here

d to

. Th

eref

ore,

cy

clic

de

nsifi

catio

n do

es n

ot r

epre

sent

a s

igni

fican

t im

pact

und

er C

EQA

. I

mpa

cts

wou

ld b

e le

ss th

an si

gnifi

cant

and

no

miti

gatio

n m

easu

res a

re re

quire

d.

Impa

ct G

EO

-5 L

ands

lides

and

Ava

lanc

hes

The

pote

ntia

l for

roc

k fa

lls o

r sn

ow a

vala

nche

s to

occ

ur o

n th

e Pr

ojec

t site

is

cons

ider

ed lo

w b

ecau

se th

e sit

e is

not a

djac

ent t

o th

e ba

se o

f a

steep

slo

pe o

r w

ithin

clo

se p

roxi

mity

to a

n ar

ea o

f ava

lanc

he fl

ow.

Fur

ther

mor

e, n

o ev

iden

ce

of p

ast

land

slide

s ha

s be

en o

bser

ved.

T

here

fore

, Pro

ject

im

pact

s re

late

d to

la

ndsli

des

and

aval

anch

es w

ould

be

less

tha

n sig

nific

ant

and

no m

itiga

tion

mea

sure

s are

requ

ired.

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Impa

ct G

EO-6

Vol

cani

c Ac

tivity

M

itiga

tion

Mea

sure

GEO

-6

A sm

all t

o m

oder

ate

volc

anic

eru

ptio

n co

uld

occu

r som

ewhe

re a

long

the

Mon

o-In

yo C

rate

rs v

olca

nic

chai

n pr

oduc

ing

pyro

clas

tic f

low

s an

d su

rges

as

wel

l as

volc

anic

ash

and

pum

ice

fallo

ut th

at c

ould

sig

nific

antly

impa

ct th

e Pr

ojec

t site

. A

lthou

gh t

his

risk

is pr

esen

t th

roug

hout

the

Tow

n an

d su

rroun

ding

are

as,

Proj

ect i

mpa

cts r

elat

ed to

vol

cani

c ac

tivity

wou

ld b

e sig

nific

ant.

The

Proj

ect a

pplic

ant s

hall

prep

are

an e

mer

genc

y ev

acua

tion

plan

in c

onsu

ltatio

n w

ith th

e To

wn

in o

rder

to p

rovi

de fo

r the

ord

erly

eva

cuat

ion

of th

e Pr

ojec

t site

in c

ase

the

pote

ntia

l fo

r vol

cani

c ha

zard

s inc

reas

es a

nd re

siden

ts ne

ed to

vac

ate

the

Proj

ect s

ite.

Impa

ct G

EO

-7 C

arbo

n M

onox

ide

As

prev

ious

ly n

oted

, hig

h co

ncen

tratio

ns o

f ca

rbon

dio

xide

are

loca

ted

with

in

isola

ted

area

s of t

he T

own,

pro

min

ently

Hor

sesh

oe L

ake.

Car

bon

diox

ide

pose

s N

o m

itiga

tion

mea

sure

s are

requ

ired.

Le

ss T

han

Sign

ifica

nt

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-37

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

a he

alth

risk

whe

n co

llect

ed a

t hig

h co

ncen

tratio

ns in

low

er p

arts

of d

epre

ssio

ns

and

encl

osur

es.

How

ever

, onc

e th

e ca

rbon

dio

xide

is a

ble

to d

isper

se w

ithin

the

atm

osph

ere,

the

re i

s no

lon

ger

a he

alth

risk

. T

he P

roje

ct s

ite i

s lo

cate

d ap

prox

imat

ely

two

an h

alf

mile

s fro

m th

e cl

oses

t iso

late

d ar

ea o

f hi

gh c

arbo

n di

oxid

e co

ncen

tratio

ns,

as s

uch

the

carb

on d

ioxi

de w

ould

disp

erse

bef

ore

arriv

ing

at th

e Pr

ojec

t site

. T

he P

roje

ct s

ite is

not

loca

ted

in a

n ar

ea a

ssoc

iate

d w

ith h

igh

leve

ls of

car

bon

diox

ide.

Th

eref

ore,

im

pact

s w

ould

be

less

tha

n sig

nific

ant a

nd n

o m

itiga

tion

mea

sure

s are

requ

ired.

Impa

ct G

EO

-8 S

oil E

rosio

n/Lo

ss o

f Top

soil

Miti

gatio

n M

easu

re G

EO

-8

The

Proj

ect s

ite w

ould

requ

ire g

radi

ng a

nd e

arth

wor

k an

d w

ould

be

subj

ect t

o so

il er

osio

n an

d lo

ss o

f top

soil.

Re

mov

al o

f uns

uita

ble

soils

from

all

build

ing

loca

tions

sha

ll ex

tend

bel

ow t

he u

nsui

tabl

e m

ater

ial

and

to a

min

imum

ho

rizon

tal

dista

nce

of o

ne-h

alf

the

foot

ing

wid

th o

r fiv

e fe

et (

whi

chev

er i

s gr

eate

r) ho

rizon

tally

ou

tside

th

e fo

otin

g fo

otpr

int.

Fu

rther

mor

e,

pave

d ro

adw

ays

and

park

ing

area

s ar

e re

com

men

ded

a re

mov

al o

f on

e to

thre

e fe

et.

A

dditi

onal

ly, e

rosio

n an

d lo

ss o

f top

soil

is po

ssib

le su

rroun

ding

the

struc

ture

s if

left

unpr

otec

ted

durin

g th

e sn

owm

elt s

easo

n. W

ithou

t pro

per i

mpl

emen

tatio

n of

er

osio

n co

ntro

l mea

sure

s du

ring

cons

truct

ion

and

oper

atio

n of

the

Proj

ect,

the

site

coul

d su

stain

soi

l ero

sion

and

loss

of t

opso

il. T

his

wou

ld b

e co

nsid

ered

a

signi

fican

t im

pact

.

The

follo

win

g m

easu

res s

hall

be im

plem

ente

d to

pre

vent

soil

eros

ion

and

loss

of t

opso

il:

• A

Sto

rm W

ater

Pol

lutio

n Pr

even

tion

Plan

(SW

PPP)

sha

ll be

pre

pare

d w

ith t

he

grad

ing

plan

s to

fulfi

ll re

gula

tory

requ

irem

ents.

• Pe

rman

ent

eros

ion

cont

rol

mea

sure

s sh

all

be p

lace

d on

all

grad

ed s

lope

s. N

o gr

aded

are

as sh

all b

e le

ft un

stabi

lized

bet

wee

n O

ctob

er 1

5th

and

Apr

il 15

th.

• Fi

nish

gra

ding

for

all

build

ing

area

s sh

all

allo

w f

or a

ll dr

aina

ge w

ater

fro

m t

he

build

ing

area

to d

rain

aw

ay fr

om b

uild

ing

foun

datio

ns (t

wo

perc

ent m

inim

um g

rade

on

soil

or so

d fo

r a d

istan

ce o

f fiv

e fe

et).

Pon

ding

of w

ater

shal

l not

be

perm

itted

.

Less

Tha

n Si

gnifi

cant

Impa

ct G

EO

-9 E

xpan

sive

Soils

Expa

nsiv

e so

ils c

onta

in c

lay

min

eral

s th

at a

ttrac

t and

abs

orb

wat

er.

The

soils

sw

ell

whe

n su

bjec

ted

to

moi

sture

, ca

usin

g str

uctu

ral

prob

lem

s th

roug

h di

ffere

ntia

l mov

emen

t. A

s not

ed, t

he P

roje

ct si

te c

onsis

ts of

silty

to c

laye

y, v

ery

fine

to c

oars

e gr

aine

d so

ils w

hich

are

not

con

sider

ed e

xpan

sive

soils

. Th

eref

ore,

no

exp

ansiv

e so

ils h

ave

been

map

ped

or e

ncou

nter

ed in

the

Tow

n. T

here

fore

, Pr

ojec

t im

pact

s re

late

d to

exp

ansiv

e so

ils w

ould

be

less

than

sig

nific

ant a

nd n

o

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-38

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

miti

gatio

n m

easu

res a

re re

quire

d.

Impa

ct G

EO

-10

Sep

tic T

anks

or A

ltern

ativ

e W

aste

Wat

er D

ispos

al S

yste

ms

No

sept

ic ta

nks o

r alte

rnat

ive

was

ter w

ater

disp

osal

syste

ms a

re p

ropo

sed

as p

art

of t

he P

roje

ct.

The

refo

re,

Proj

ect

impa

cts

rela

ted

to s

oils

inca

pabl

e of

su

ppor

ting

thes

e us

es w

ould

be

less

than

sign

ifica

nt a

nd n

o m

itiga

tion

mea

sure

s ar

e re

quire

d.

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Impa

ct G

EO-1

1 C

umul

ativ

e Im

pact

s

Geo

tech

nica

l im

pact

s re

late

d to

futu

re d

evel

opm

ent i

n th

e To

wn

wou

ld in

volv

e ha

zard

s as

soci

ated

with

site

-spe

cific

soi

l con

ditio

ns, i

nclu

ding

ero

sion,

vol

cani

c ac

tivity

, an

d gr

ound

-sha

king

du

ring

earth

quak

es.

Th

e Pr

ojec

t w

ould

in

corp

orat

e Be

st M

anag

emen

t Pra

ctic

es (i

nclu

ding

the

prep

arat

ion

of a

SW

PPP)

th

at w

ould

red

uce

or e

limin

ate

impa

cts

from

ero

sion.

A

lthou

gh t

he P

roje

ct

wou

ld r

esul

t in

the

addi

tion

of p

eopl

e to

the

Proj

ect a

rea,

the

risk

of s

eism

ic

shak

ing

wou

ld b

e no

gre

ater

than

oth

er a

reas

of t

he T

own

of M

amm

oth

Lake

s.

The

impa

cts

on e

ach

site

wou

ld b

e sp

ecifi

c to

that

site

and

its

user

s an

d w

ould

no

t be

com

mon

or

cont

ribut

e to

(or

sha

red

with

, in

an

addi

tive

sens

e) t

he

impa

cts o

n ot

her s

ites.

In a

dditi

on, a

ll de

velo

pmen

t on

the

Proj

ect s

ite w

ould

be

subj

ect

to u

nifo

rm s

ite d

evel

opm

ent

and

cons

truct

ion

stand

ards

tha

t ar

e de

signe

d to

pro

tect

pub

lic s

afet

y.

Ther

efor

e, c

umul

ativ

e ge

olog

y an

d so

il im

pact

s wou

ld b

e le

ss th

an si

gnifi

cant

and

no

miti

gatio

n m

easu

res a

re re

quire

d.

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

HY

DR

OLO

GY

& W

ATE

R Q

UA

LITY

(HY

D)

Impa

ct H

YD-1

Wat

er Q

ualit

y St

anda

rds

Miti

gatio

n M

easu

re H

YD-1

Cons

truct

ion

Rela

ted

Impa

cts

The

requ

ired

impl

emen

tatio

n of

the

BM

Ps i

n th

e Pr

ojec

t’s S

WPP

P w

ould

en

sure

that

Pro

ject

con

struc

tion

activ

ities

with

in th

e Pr

ojec

t site

wou

ld n

ot c

ause

The

golf

cour

se e

xpan

sion

(Are

as E

2, E

4, a

nd F

) are

a m

ay b

e irr

igat

ed w

ith re

clai

med

or

pota

ble

wat

er. A

t thi

s tim

e, m

itiga

tion

requ

irem

ents

for t

he u

se o

f re

clai

med

wat

er h

ave

not b

een

dete

rmin

ed.

How

ever

, if r

ecla

imed

wat

er is

use

d fo

r irri

gatio

n, o

ptio

ns s

hall

be

expl

ored

to

limit

recl

aim

ed w

ater

fro

m e

nter

ing

the

tribu

tary

are

a th

at f

low

s to

war

d

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-39

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

the

viol

atio

n of

any

wat

er q

ualit

y sta

ndar

ds w

ithin

Mam

mot

h Cr

eek.

Thu

s, th

e Pr

ojec

t wou

ld b

e co

nsid

ered

to h

ave

a le

ss th

an si

gnifi

cant

impa

ct o

n th

e ab

ility

of

Mam

mot

h Cr

eek

to a

ttain

all

appl

icab

le w

ater

qua

lity

stand

ards

.

Ope

ratio

n-Re

late

d Im

pact

s

Act

iviti

es a

ssoc

iate

d w

ith o

pera

tion

of t

he P

roje

ct w

ould

gen

erat

e su

bsta

nces

th

at c

ould

deg

rade

the

qua

lity

of w

ater

run

off.

Alth

ough

the

disc

harg

e of

sto

rmw

ater

from

the

deve

lope

d po

rtion

s of

the

Proj

ect s

ite to

Mam

mot

h Cr

eek

is ex

pect

ed t

o be

an

extre

mel

y ra

re e

vent

, im

plem

enta

tion

of M

itiga

tion

Mea

sure

HY

D-1

bel

ow w

ould

red

uce

pote

ntia

l ope

ratio

nal P

roje

ct im

pact

s on

w

ater

qua

lity

in M

amm

oth

Cree

k to

a le

ss th

an si

gnifi

cant

leve

l.

Mam

mot

h C

reek

. Th

ese

mea

sure

s cou

ld in

clud

e:

• Irr

igat

e al

l ret

entio

n ba

sins a

nd th

e sw

ale

from

the

rete

ntio

n ba

sins (

loca

ted

to th

e w

est o

f She

rwin

Cre

ek R

oad)

usin

g po

tabl

e w

ater

.

• Irr

igat

e an

y la

ndsc

apin

g w

ithin

or

dire

ctly

trib

utar

y to

the

se f

eatu

res

whi

ch

requ

ires

irrig

atio

n us

ing

pota

ble

wat

er. G

olf

cour

se a

reas

imm

edia

tely

sou

th o

f th

e ba

sins

shal

l be

con

struc

ted

to r

etai

n al

l sto

rmw

ater

run

off

and

shal

l no

t ov

erflo

w to

the

basin

s.

• In

crea

se c

apac

ity o

f on

-site

ret

entio

n fo

r th

e go

lf co

urse

are

as i

rriga

ted

with

re

clai

med

wat

er to

incl

ude

capa

city

for a

stor

m o

f 100

-yea

r int

ensit

y.

• G

rade

sou

thea

sterly

lim

its o

f the

gol

f cou

rse

expa

nsio

n ar

ea in

som

e lo

catio

ns to

bl

ock

tribu

tary

dra

inag

e fro

m th

e so

uth

and

dire

ct it

eas

t tow

ard

Sher

win

Cre

ek

Road

.

At t

his s

tage

, it i

s unk

now

n if

it w

ill b

e re

quire

d to

lim

it re

clai

med

wat

er fr

om e

nter

ing

the

tribu

tary

are

a th

at f

low

s to

war

d M

amm

oth

Cree

k.

The

final

det

erm

inat

ion

of o

utflo

w

cond

ition

s if

recl

aim

ed w

ater

is u

sed

will

be

mad

e du

ring

the

final

des

ign

in c

oord

inat

ion

with

the

RW

QCB

and

oth

er a

pplic

able

age

ncie

s. I

n th

e ev

ent

that

rec

laim

ed w

ater

is

used

, the

abo

ve m

itiga

tion

mea

sure

s w

ill b

e im

plem

ente

d to

avo

id a

ny i

mpa

cts

to t

he

wat

er q

ualit

y of

Mam

mot

h Cr

eek.

In c

onsu

ltatio

n w

ith th

e To

wn,

the

Proj

ect a

pplic

ant s

hall

iden

tify

and

impl

emen

t a s

uite

of

sto

rmw

ater

qua

lity

BMPs

des

igne

d to

add

ress

the

mos

t lik

ely

sour

ces

of s

torm

wat

er

pollu

tant

s re

sulti

ng f

rom

ope

ratio

n of

the

pro

pose

d de

velo

pmen

t pr

ojec

ts w

ithin

the

pr

opos

ed P

roje

ct a

rea.

Po

lluta

nt s

ourc

es a

nd p

athw

ays

to b

e ad

dres

sed

by th

ese

BM

Ps

incl

ude,

but

are

not

nec

essa

rily

limite

d to

, par

king

lots,

mai

nten

ance

are

as, t

rash

sto

rage

lo

catio

ns, r

oofto

ps, i

nter

ior p

ublic

and

priv

ate

road

way

s, th

e go

lf co

urse

, and

sto

rm d

rain

in

lets.

Th

ese

BMPs

sha

ll in

clud

e de

tent

ion

and

sedi

men

tatio

n ba

sins

as w

ell

as

infil

tratio

n de

vice

s de

signe

d to

filt

er r

unof

f fro

m p

aved

are

as o

n th

e Pr

ojec

t sit

e.

The

desig

n an

d lo

catio

n of

thes

e BM

Ps w

ill b

e su

bjec

t to

revi

ew a

nd c

omm

ent b

y th

e To

wn

but

shal

l ge

nera

lly a

dher

e to

the

sta

ndar

ds a

ssoc

iate

d w

ith t

he P

hase

II

NPD

ES

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-40

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

storm

wat

er p

erm

it pr

ogra

m.

Impl

emen

tatio

n of

thes

e BM

Ps sh

all b

e as

sure

d by

the

Com

mun

ity D

evel

opm

ent D

irect

or

and

Tow

n En

gine

er p

rior

to th

e iss

uanc

e of

Gra

ding

or

Build

ing

Perm

its.

Com

plia

nce

with

the

se m

itiga

tion

mea

sure

s w

ould

red

uce

pote

ntia

l im

pact

s re

sulti

ng f

rom

Pro

ject

op

erat

ion

on re

ceiv

ing

wat

er q

ualit

y in

Mam

mot

h Cr

eek

to a

less

than

sign

ifica

nt le

vel.

Impa

ct H

YD-2

Gro

undw

ater

Dep

letio

n or

Rec

harg

e M

itiga

tion

Mea

sure

HYD

-2

A s

igni

fican

t im

pact

may

occ

ur i

f a

Proj

ect

wou

ld s

ubsta

ntia

lly d

eple

te

grou

ndw

ater

sup

plie

s or

inte

rfere

sub

stant

ially

with

gro

undw

ater

rech

arge

suc

h th

at th

ere

wou

ld b

e a

net d

efic

it in

aqu

ifer

volu

me

or a

low

erin

g of

the

loca

l gr

ound

wat

er ta

ble

leve

l.

Cons

truct

ion-

Rela

ted

Impa

cts

Gro

undw

ater

see

page

was

enc

ount

ered

at t

he P

roje

ct s

ite a

t dep

ths

as h

igh

as 2

fe

et a

nd a

s lo

w a

s 8.

5 fe

et b

elow

the

exist

ing

grad

e.

Gro

undw

ater

con

ditio

ns

ofte

n flu

ctua

te s

easo

nally

and

dep

ths

reco

rded

may

not

nec

essa

rily

be re

flect

ive

of g

roun

dwat

er e

leva

tions

dur

ing

cons

truct

ion.

G

roun

dwat

er p

umpe

d du

ring

cons

truct

ion

from

the

Pro

ject

site

wou

ld n

ot b

e ex

tens

ive

and

wou

ld b

e co

nvey

ed to

one

of t

he e

xisti

ng re

tent

ion

basin

s lo

cate

d w

ithin

the

exist

ing

golf

cour

se a

rea.

Th

is am

ount

of

grou

ndw

ater

pum

ping

wou

ld n

ot b

e su

bsta

ntia

l en

ough

to

depl

ete

or i

nter

fere

with

gro

undw

ater

rec

harg

e an

d w

ould

be

cons

ider

ed le

ss th

an si

gnifi

cant

.

Ope

ratio

n-Re

late

d Im

pact

s

The

site

is su

bjec

t to

high

gro

undw

ater

. D

ue to

typi

cal h

eavy

snow

pack

mel

ting

in th

e sp

ring,

nea

rly a

ll sit

es in

Mam

mot

h La

kes

are

subj

ect t

o se

ason

al h

igh

grou

ndw

ater

and

stru

ctur

es n

eed

to b

e pr

otec

ted

from

hig

h gr

ound

wat

er le

vels.

Th

e pr

opos

ed r

eten

tion

basin

s al

ong

Old

Mam

mot

h Ro

ad h

ave

been

siz

ed to

re

tain

and

inf

iltra

te r

unof

f fro

m t

he r

esid

entia

l/com

mer

cial

are

as w

ithin

the

Pr

ojec

t as

wel

l as

run

off

from

oth

er p

rior

off-s

ite d

evel

opm

ents

whi

ch a

re

All

unde

rgro

und

struc

ture

s sh

all b

e de

signe

d w

ith e

xter

ior

wal

l dra

in b

oard

to a

foo

ting

drai

n sy

stem

as

wel

l as

unde

rsla

b su

bdra

ins.

Cra

wl s

pace

s sh

all b

e pr

otec

ted

with

pro

per

vent

ilatio

n an

d su

bdra

ins.

The

sys

tem

sha

ll be

des

igne

d su

ch t

hat

subd

rain

s sh

all

be

desig

ned

with

out

let s

yste

ms

that

hav

e m

axim

um w

ater

sur

face

ele

vatio

ns lo

wer

than

the

botto

m o

f the

sub

drai

ns to

ens

ure

that

sub

drai

ns w

ould

not

be

inun

date

d w

ith s

torm

wat

er

whe

n re

tent

ion

basin

s re

ach

capa

city

. Su

bdra

in d

esig

n sh

all

be b

ased

on

final

Pro

ject

de

sign

and

shal

l be

ade

quat

ely

sized

so

that

ret

entio

n ba

sin c

apac

ity i

s m

aint

aine

d fo

r sto

rmw

ater

rete

ntio

n pu

rpos

es.

Impl

emen

tatio

n of

this

mea

sure

wou

ld re

duce

this

impa

ct

to a

less

than

sign

ifica

nt le

vel.

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-41

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

tribu

tary

to th

ese

basin

s. T

he d

irect

ion

of ru

noff

from

the

incr

ease

d im

perv

ious

su

rface

are

as o

f th

e Pr

ojec

t to

the

se b

asin

s w

ould

pro

vide

for

gro

undw

ater

re

char

ge a

nd w

ould

red

uce

oper

atio

n-re

late

d im

pact

s co

ncer

ning

gro

undw

ater

re

char

ge to

a le

ss th

an si

gnifi

cant

leve

l.

Impa

ct H

YD-3

Dra

inag

e Pa

ttern

Alte

ratio

n

Cons

truct

ion-

Rela

ted

Impa

cts

Dev

elop

men

t of

the

curre

ntly

und

evel

oped

are

as w

ithin

the

Proj

ect s

ite w

ould

re

sult

in t

he m

odifi

catio

n of

exi

sting

dra

inag

e pa

ths

and

a hi

gher

am

ount

of

surfa

ce r

unof

f th

an i

s cu

rrent

ly g

ener

ated

by

thes

e ar

eas.

The

req

uire

d im

plem

enta

tion

of t

he B

est

Man

agem

ent

Prac

tices

(B

MPs

) in

the

Pro

ject

’s

cons

truct

ion

SWPP

P w

ould

ens

ure

that

Pro

ject

con

struc

tion

activ

ities

with

in th

e sit

e w

ould

not

cau

se su

bsta

ntia

l ero

sion

or si

ltatio

n on

- or o

ff-sit

e. T

hese

BM

Ps

wou

ld i

nclu

de, a

t a

min

imum

, su

ch m

easu

res

as l

imiti

ng s

ite g

radi

ng t

o dr

y sp

ring,

sum

mer

and

fall

mon

ths a

nd si

ltatio

n co

ntro

ls.

Ope

ratio

n-Re

late

d Im

pact

s

Act

iviti

es a

ssoc

iate

d w

ith th

e op

erat

ion

of th

e Pr

ojec

t are

not

con

sider

ed li

kely

to

sub

stant

ially

inc

reas

e on

- or

off-

site

eros

ion

or s

iltat

ion.

N

onet

hele

ss, t

he

prop

osed

in

stalla

tion

of

perm

anen

t sto

rm

cont

rol

faci

litie

s an

d se

dim

enta

tion/

infil

tratio

n ba

sins

will

red

uce

Proj

ect-g

ener

ated

ero

sion

and

silta

tion

impa

cts

(see

Miti

gatio

n M

easu

re H

YD

-1).

No

signi

fican

t im

pact

s pe

rtain

ing

to P

roje

ct o

pera

tion-

gene

rate

d er

osio

n an

d sil

tatio

n ar

e an

ticip

ated

to

resu

lt fro

m n

ew d

evel

opm

ent a

t the

Pro

ject

site

.

Thus

, th

e Pr

ojec

t w

ould

hav

e a

less

tha

n sig

nific

ant

impa

ct i

n te

rms

of

incr

easin

g on

- or o

ff-sit

e er

osio

n an

d sil

tatio

n th

roug

h th

e al

tera

tion

of e

xisti

ng

drai

nage

pat

tern

s.

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-42

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

Impa

ct H

YD-4

Dra

inag

e Sy

stem

Cap

acity

M

itiga

tion

Mea

sure

HYD

-4

The

Proj

ect w

ould

cre

ate

43 a

cres

of

impe

rvio

us s

urfa

ces

cons

istin

g of

roo

fs,

driv

es, a

nd p

arki

ng a

reas

. The

Pro

ject

wou

ld i

nclu

de 2

4 ac

res

of l

ands

cape

d ar

eas.

Com

plia

nce

with

the

miti

gatio

n m

easu

re b

elow

wou

ld r

educ

e po

tent

ial

impa

cts r

esul

ting

from

Pro

ject

ope

ratio

n to

a le

ss th

an si

gnifi

cant

leve

l.

In c

onsu

ltatio

n w

ith th

e To

wn

of M

amm

oth

Lake

s an

d R

WQ

CB, a

nd s

ubje

ct to

Tow

n ap

prov

al,

the

Proj

ect

appl

ican

t sh

all

iden

tify

and

impl

emen

t a

suite

of

storm

dra

inag

e fa

cilit

ies

desig

ned

to s

afel

y ca

ptur

e, t

reat

, and

con

vey

runo

ff fro

m t

he r

equi

red

desig

n sto

rms.

In

addi

tion,

a d

etai

led

set

of m

aint

enan

ce p

roce

dure

s ne

cess

ary

to a

ssur

e th

at

storm

dra

inag

e fa

cilit

ies

cont

inue

to w

ork

as d

esig

ned

shal

l be

esta

blish

ed a

nd a

ppro

ved

by th

e To

wn,

in c

onsu

ltatio

n w

ith th

e RW

QCB

. Pa

rticu

lar i

tem

s re

quiri

ng m

aint

enan

ce

incl

ude,

but

are

not

lim

ited

to, c

lean

ing

of g

rate

s, re

mov

al o

f for

eign

mat

eria

ls fro

m st

orm

dr

aina

ge p

ipes

, mai

nten

ance

as

nece

ssar

y fo

r ou

tlet

faci

litie

s an

d re

tent

ion

basin

s, an

d re

pairs

as n

eces

sary

to d

amag

ed fa

cilit

ies.

Less

Tha

n Si

gnifi

cant

Impa

ct H

YD-5

100

Yea

r Flo

od H

azar

d

A si

gnifi

cant

impa

ct m

ay o

ccur

if a

Pro

ject

wou

ld p

lace

stru

ctur

es w

hich

wou

ld

impe

de o

r red

irect

floo

d w

ater

s in

a 1

00-y

ear f

lood

zon

e. T

here

is n

o 10

0-ye

ar

flood

zon

e so

uth

of O

ld M

amm

oth

Road

and

wes

t of S

herw

in C

reek

Roa

d. A

sm

all

porti

on o

f th

e Pr

ojec

t sit

e no

rth o

f O

ld M

amm

oth

Road

whe

re t

he

Mar

ket/G

ener

al S

tore

wou

ld b

e lo

cate

d is

adja

cent

to M

amm

oth

Cree

k an

d is

with

in a

100

-yea

r flo

od z

one.

How

ever

, all

deve

lopm

ent i

n th

is po

rtion

of t

he

Proj

ect s

ite w

ould

be

plac

ed o

utsid

e th

e 10

0-ye

ar fl

ood

zone

. Th

us, t

he P

roje

ct

wou

ld h

ave

a le

ss th

an si

gnifi

cant

impa

ct w

ith re

spec

t to

flood

haz

ards

.

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Impa

ct H

YD-6

Cum

ulat

ive

Impa

cts

Dev

elop

men

t of

the

Pro

ject

in

com

bina

tion

with

the

rel

ated

pro

ject

s w

ould

re

sult

in th

e fu

rther

infil

ling

of u

ses

with

in th

e U

rban

Gro

wth

Bou

ndar

y.

The

surro

undi

ng a

rea

prim

arily

con

sists

of a

pat

chw

ork

of u

ndev

elop

ed a

reas

and

de

velo

ped

impe

rvio

us u

rban

ized

surfa

ces,

and

is se

rved

by

exist

ing

storm

dra

ins

that

wou

ld b

e ex

pand

ed i

n or

der

to s

erve

new

dev

elop

men

t. I

t is

likel

y th

at

mos

t of t

he re

late

d pr

ojec

ts w

ould

dra

in to

the

Tow

n’s

storm

dra

in s

yste

m a

nd

ultim

atel

y to

Mam

mot

h Cr

eek.

Ea

ch i

ndiv

idua

l re

late

d pr

ojec

t w

ould

be

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-43

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

requ

ired

to s

ubm

it a

drai

nage

ana

lysis

to

the

Tow

n.

Each

dra

inag

e an

alys

is m

ust i

llustr

ate

how

pea

k flo

ws

gene

rate

d fro

m e

ach

rela

ted

Proj

ect s

ite w

ould

be

acc

omm

odat

ed b

y th

e To

wn’

s ex

istin

g an

d/or

pro

pose

d sto

rm d

rain

age

faci

litie

s. W

here

nec

essa

ry, e

ach

rela

ted

proj

ect w

ould

be

requ

ired

to in

clud

e de

tent

ion

or in

filtra

tion

feat

ures

des

igne

d to

redu

ce th

e to

tal r

ate

and/

or v

olum

e of

runo

ff ge

nera

ted

at it

s sit

e. l

l rel

ated

pro

ject

s th

at d

istur

b on

e ac

re o

r mor

e m

ust a

lso o

btai

n co

vera

ge u

nder

the

GC

ASW

P, in

clud

ing

the

prep

arat

ion

and

subm

ittal

of a

SW

PPP

to g

over

n al

l con

struc

tion

activ

ities

ass

ocia

ted

with

eac

h pr

ojec

t.

As

a re

sult,

cu

mul

ativ

ely

cons

ider

able

w

ater

qu

ality

an

d er

osio

n/sil

tatio

n im

pact

s wou

ld b

e le

ss th

an si

gnifi

cant

.

LA

ND

USE

AN

D P

LA

NN

ING

(LU

)

Impa

ct L

U-1

Co

nsist

ency

with

App

licab

le L

and

Use

Pla

ns,

Polic

ies,

or

Regu

latio

ns

As

note

d, t

he P

roje

ct i

s ge

nera

lly c

onsis

tent

with

and

im

plem

ents

appl

icab

le

plan

s an

d po

licie

s. T

he P

roje

ct s

ite i

s cu

rrent

ly g

over

ned

by t

he l

and

use

polic

ies

and

regu

latio

ns s

et f

orth

in th

e G

ener

al P

lan

(198

7 an

d 20

07 G

ener

al

Plan

), th

e Sn

owcr

eek

Mas

ter P

lan

(ado

pted

in 1

974

and

amen

ded

in 1

981)

and

th

e To

wn

of M

amm

oth

Lake

s Zon

ing

Ord

inan

ce.

Due

to

cons

isten

cy w

ith v

irtua

lly a

ll of

the

198

7 an

d 20

07 G

ener

al P

lan

polic

ies,

impa

cts

of th

e Pr

ojec

t w

ould

be

less

than

sig

nific

ant a

nd w

ould

not

re

quire

miti

gatio

n.

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Impa

ct L

U-2

Cum

ulat

ive

Impa

cts

Cum

ulat

ive

land

use

impa

cts c

ould

occ

ur if

oth

er re

late

d pr

ojec

ts in

the

Tow

n of

M

amm

oth

Lake

s w

ould

res

ult

in l

and

use

impa

cts

in c

onju

nctio

n w

ith t

he

Proj

ect.

Of t

he 4

1 re

late

d pr

ojec

ts, 3

4 ar

e re

siden

tial p

roje

cts l

ocat

ed w

ithin

the

Tow

n.

The

Proj

ect,

in c

onju

nctio

n w

ith o

ther

pro

ject

s, is

loca

ted

with

in a

n

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-44

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

urba

nize

d ar

ea a

nd w

ould

not

be

grea

t en

ough

in

size

or e

xten

t to

div

ide

an

esta

blish

ed c

omm

unity

. Th

e Pr

ojec

t site

and

its

vici

nity

are

not

loca

ted

with

in

an a

rea

cove

red

by a

Hab

itat

Cons

erva

tion

Plan

or

Nat

ural

Com

mun

ity

Cons

erva

tion

Plan

and

, th

eref

ore,

wou

ld n

ot c

ontri

bute

to

any

cum

ulat

ive

impa

cts t

o H

abita

t Con

serv

atio

n Pl

ans.

The

Proj

ect

is co

nsist

ent

with

lot

cov

erag

e as

def

ined

by

the

Gen

eral

Pla

n.

Add

ition

ally

, onc

e th

e Zo

ning

Cod

e re

visio

ns a

re a

ppro

ved,

the

heig

ht o

f th

e pr

opos

ed H

otel

com

pone

nt o

f th

e Pr

ojec

t w

ould

be

cons

isten

t w

ith h

eigh

t lim

itatio

ns a

s allo

wed

in th

e Zo

ning

Cod

e. E

ach

of th

ese

rela

ted

proj

ects

wou

ld

be re

quire

d to

dem

onstr

ate

cons

isten

cy w

ith th

e go

als,

polic

ies,

and

obje

ctiv

es

of t

he G

ener

al P

lan,

and

oth

er a

pplic

able

reg

iona

l pl

ans

and

to d

eter

min

e w

heth

er t

hey

wou

ld r

esul

t in

env

ironm

enta

l im

pact

s. T

here

fore

, th

e Pr

ojec

t w

ould

not

con

tribu

te to

any

cum

ulat

ive

land

use

impa

cts

and

this

impa

ct w

ould

be

less

than

sign

ifica

nt.

NO

ISE

Impa

ct N

OIS

E-1

Exp

osur

e of

Per

sons

to E

xces

sive

Noi

se L

evel

s M

itiga

tion

Mea

sure

s NO

ISE-

1a th

roug

h 1c

Cons

truct

ion

Noi

se

Cons

truct

ion

of th

e Pr

ojec

t wou

ld r

equi

re th

e us

e of

hea

vy e

quip

men

t for

site

gr

adin

g an

d ex

cava

tion,

insta

llatio

n of

util

ities

, pav

ing,

and

bui

ldin

g fa

bric

atio

n.

Dev

elop

men

t ac

tiviti

es w

ould

also

inv

olve

the

use

of

smal

ler

pow

er t

ools,

ge

nera

tors

, and

oth

er so

urce

s of n

oise

. D

urin

g ea

ch st

age

of d

evel

opm

ent,

ther

e w

ould

be

a di

ffere

nt m

ix o

f eq

uipm

ent o

pera

ting

and

noise

leve

ls w

ould

var

y ba

sed

on th

e am

ount

of e

quip

men

t in

oper

atio

n an

d th

e lo

catio

n of

the

activ

ity.

Dep

endi

ng

on

the

dista

nce

of

near

by

off-s

ite

uses

to

th

e Pr

ojec

t sit

e,

impl

emen

tatio

n of

Miti

gatio

n M

easu

res

NO

ISE-

1a t

hrou

gh N

OIS

E-1c

wou

ld

ensu

re t

hat

noise

lev

els

are

belo

w t

he T

own’

s m

axim

um e

xter

ior

noise

sta

ndar

ds fo

r con

struc

tion

activ

ity, r

esul

ting

in a

less

than

sign

ifica

nt im

pact

.

Miti

gatio

n M

easu

re N

OIS

E-1a

Exp

osur

e of

Per

sons

to E

xces

sive

Noi

se L

evel

s

Cons

truct

ion

activ

ities

sha

ll be

lim

ited

to b

etw

een

the

hour

s of

7 A

.M.

and

8 P.

M.,

Mon

day

thro

ugh

Satu

rday

. W

ork

hour

s on

Sun

days

and

Tow

n re

cogn

ized

hol

iday

s sh

all

be li

mite

d to

the

hour

s be

twee

n 9

A.M

. and

5 P

.M.,

and

shal

l be

perm

itted

onl

y w

ith th

e ap

prov

al o

f the

bui

ldin

g of

ficia

l or d

esig

nee.

Miti

gatio

n M

easu

re N

OIS

E-1b

Exp

osur

e of

Per

sons

to E

xces

sive

Noi

se L

evel

s

Proj

ect d

evel

oper

s sh

all r

equi

re b

y co

ntra

ct s

peci

ficat

ions

that

the

follo

win

g co

nstru

ctio

n be

st m

anag

emen

t pra

ctic

es (B

MPs

) be

impl

emen

ted

by c

ontra

ctor

s to

redu

ce c

onstr

uctio

n no

ise le

vels:

• Pr

ovid

e ad

vanc

e no

tific

atio

n of

con

struc

tion

to th

e im

med

iate

sur

roun

ding

land

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-45

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

uses

aro

und

a de

velo

pmen

t site

• En

sure

tha

t co

nstru

ctio

n eq

uipm

ent

is pr

oper

ly m

uffle

d ac

cord

ing

to i

ndus

try

stand

ards

• Pl

ace

noise

-gen

erat

ing

cons

truct

ion

equi

pmen

t an

d lo

cate

con

struc

tion

stagi

ng

area

s aw

ay fr

om re

siden

ces,

whe

re fe

asib

le

• Sc

hedu

le h

igh

noise

-pro

duci

ng a

ctiv

ities

bet

wee

n th

e ho

urs o

f 8 A

.M. a

nd 5

P.M

. to

min

imiz

e di

srup

tion

on se

nsiti

ve u

ses

• Im

plem

ent n

oise

atte

nuat

ion

mea

sure

s to

the

exte

nt fe

asib

le, w

hich

may

incl

ude,

bu

t are

not

lim

ited

to, n

oise

bar

riers

or n

oise

bla

nket

s

Miti

gatio

n M

easu

re N

OIS

E-1c

Exp

osur

e of

Per

sons

to E

xces

sive

Noi

se L

evel

s

Proj

ect d

evel

oper

s sh

all r

equi

re b

y co

ntra

ct s

peci

ficat

ions

that

con

struc

tion

stagi

ng a

reas

w

ithin

the

Pro

ject

site

wou

ld b

e lo

cate

d as

far

aw

ay f

rom

vib

ratio

n-se

nsiti

ve s

ites

as

feas

ible

.

Impa

ct N

OIS

E-2

Exc

essiv

e Co

nstru

ctio

n-Re

late

d G

roun

dbor

ne V

ibra

tion

Cons

truct

ion

activ

ities

that

wou

ld o

ccur

with

in th

e Pr

ojec

t site

wou

ld in

clud

e gr

adin

g an

d ex

cava

tion

whi

ch w

ould

hav

e th

e po

tent

ial t

o ge

nera

te lo

w le

vels

of

grou

ndbo

rne

vibr

atio

n.

Vib

ratio

n le

vels

coul

d re

ach

as h

igh

as a

ppro

xim

atel

y 87

vib

ratio

n de

cibe

ls (V

dB) w

ithin

25

feet

of t

he P

roje

ct si

te fr

om th

e op

erat

ion

of la

rge

bulld

ozer

s. C

onstr

uctio

n of

the

Proj

ect w

ould

requ

ire th

e us

e of

typi

cal

cons

truct

ion

equi

pmen

t th

at c

ould

gen

erat

e so

me

grou

nd-b

orne

vib

ratio

n an

d gr

ound

-bor

ne n

oise

, but

the

Proj

ect w

ould

not

invo

lve

the

use

of p

ile d

river

s, w

hich

hav

e th

e po

tent

ial t

o ge

nera

te s

ubsta

ntia

l vib

ratio

n.

In a

dditi

on, p

er th

e To

wn’

s re

quire

men

ts, c

onstr

uctio

n ac

tiviti

es t

hat

wou

ld p

rodu

ce g

roun

dbor

ne

vibr

atio

n w

ould

prim

arily

occ

ur b

etw

een

the

hour

s of

7:0

0 A

M a

nd 8

:00

PM

Mon

day

thro

ugh

Frid

ay.

The

refo

re,

thes

e ac

tiviti

es w

ould

not

occ

ur d

urin

g re

cogn

ized

sle

ep h

ours

for

res

iden

ts.

Base

d on

thi

s in

form

atio

n, p

ropo

sed

cons

truct

ion

activ

ities

ass

ocia

ted

with

the

Pro

ject

wou

ld n

ot e

xpos

e se

nsiti

ve

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-46

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

rece

ptor

s in

the

Pro

ject

vic

inity

to

exce

ssiv

e gr

ound

born

e vi

brat

ion

leve

ls.

Ther

efor

e,

Proj

ect

impa

cts

rela

ted

to

exce

ssiv

e co

nstru

ctio

n-re

late

d gr

ound

born

e vi

brat

ion

wou

ld b

e co

nsid

ered

les

s th

an s

igni

fican

t an

d no

m

itiga

tion

mea

sure

s wou

ld b

e re

quire

d.

Impa

ct N

OIS

E-3

Tem

pora

ry In

crea

se in

Noi

se (C

onstr

uctio

n N

oise

)

The

uses

nea

rest

the

Proj

ect s

ite th

at a

re s

ensit

ive

to c

onstr

uctio

n no

ise a

re th

e sin

gle-

fam

ily a

nd m

ulti-

fam

ily r

esid

entia

l us

es a

djac

ent

to t

he P

roje

ct s

ite’s

so

uthe

rn a

nd w

este

rn b

ound

arie

s. T

he p

rope

rty l

ine

of t

he n

eare

st of

f-site

, m

ulti-

fam

ily re

siden

tial u

ses i

s loc

ated

app

roxi

mat

ely

100

feet

from

the

edge

of

the

area

s of

con

struc

tion

with

in t

he P

roje

ct s

ite.

Thi

s EI

R as

sum

es t

hat

an

incr

ease

of f

ive

A-w

eigh

ted

deci

bel s

cale

(dBA

) or g

reat

er o

ver a

mbi

ent n

oise

le

vels

is su

bsta

ntia

l an

d sig

nific

ant.

The

refo

re,

dem

oliti

on a

nd c

onstr

uctio

n ac

tiviti

es a

ssoc

iate

d w

ith th

e Pr

ojec

t, pa

rticu

larly

the

use

of h

eavy

mac

hine

ry,

coul

d ge

nera

te t

empo

rary

int

erm

itten

t no

ise i

n ex

cess

of

the

Tow

n’s

noise

sta

ndar

ds.

How

ever

, co

nstru

ctio

n ac

tiviti

es w

ould

onl

y oc

cur

durin

g th

e pe

rmitt

ed h

ours

des

igna

ted

in th

e To

wn’

s M

unic

ipal

Cod

e, a

nd th

us w

ould

not

oc

cur d

urin

g re

cogn

ized

sle

ep h

ours

for r

esid

ence

s or o

n da

ys th

at re

siden

ts ar

e m

ost s

ensit

ive

to e

xter

ior n

oise

. In

add

ition

, con

struc

tion

activ

ities

wou

ld a

lso

be r

equi

red

to c

ompl

y w

ith th

e co

nstru

ctio

n no

ise s

tand

ards

esta

blish

ed in

the

Tow

n N

oise

Ord

inan

ce.

As s

uch,

alth

ough

a p

hysic

al in

crea

se in

am

bien

t noi

se

leve

ls w

ould

occ

ur fr

om th

e co

nstru

ctio

n ac

tiviti

es a

ssoc

iate

d w

ith th

e Pr

ojec

t, th

is te

mpo

rary

incr

ease

wou

ld n

ot c

reat

e an

adv

erse

effe

ct o

n ne

arby

resid

ents.

Th

eref

ore,

with

com

plia

nce

with

the

Tow

n’s

Mun

icip

al C

ode

and

Noi

se

Ord

inan

ce,

the

mag

nitu

de o

f th

is im

pact

wou

ld b

e re

duce

d to

a l

ess

than

sig

nific

ant l

evel

.

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Impa

ct N

OIS

E-4

Per

man

ent I

ncre

ases

in N

oise

(Ope

ratio

nal I

mpa

cts)

Traf

fic N

oise

Lev

els O

n sit

e N

o m

itiga

tion

mea

sure

s are

requ

ired.

Le

ss T

han

Sign

ifica

nt

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-47

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

Upo

n co

mpl

etio

n of

the

Proj

ect,

noise

leve

ls w

ithin

the

Proj

ect s

ite w

ould

be

prim

arily

gen

erat

ed b

y ve

hicu

lar

traffi

c on

the

sur

roun

ding

roa

dway

s. T

he

Tow

n ha

s es

tabl

ished

ext

erio

r no

ise s

tand

ards

for

diff

eren

t la

nd u

ses.

As

indi

cate

d in

the

Tow

n N

oise

Ord

inan

ce, n

oise

leve

ls at

eac

h la

nd u

se m

ay n

ot

exce

ed t

he e

xter

ior

noise

sta

ndar

d pl

us 2

0 dB

A f

or a

ny p

erio

d of

tim

e (m

axim

um n

oise

lev

el).

Bas

ed o

n th

e co

ncep

tual

site

pla

n fo

r th

e Pr

ojec

t sh

owin

g th

e lo

catio

ns

of

the

prop

osed

re

siden

tial

uses

re

lativ

e to

th

e su

rroun

ding

road

way

s, no

ne o

f the

resid

entia

l use

s pr

opos

ed in

the

Proj

ect s

ite

wou

ld b

e lo

cate

d w

ithin

the

70

Ldn

(com

mun

ity n

oise

) co

ntou

rs o

f th

e ro

adw

ays

anal

yzed

. Th

us, t

he p

ropo

sed

resid

entia

l use

s w

ithin

the

Proj

ect s

ite

wou

ld n

ot b

e ex

pose

d to

traf

fic n

oise

leve

ls ex

ceed

ing

70 L

dn.

Thus

, im

pact

s as

soci

ated

with

tra

ffic

noise

lev

els

on-s

ite w

ould

be

cons

ider

ed l

ess

than

sig

nific

ant.

Off-

Site

Tra

ffic

Noi

se

The

incr

ease

in

traffi

c re

sulti

ng f

rom

im

plem

enta

tion

of t

he P

roje

ct w

ould

in

crea

se t

he a

mbi

ent

noise

lev

els

at s

ensit

ive

off-s

ite l

ocat

ions

in

the

Proj

ect

vici

nity

. B

ecau

se t

raffi

c is

cons

ider

ed t

o be

a l

ong-

term

noi

se s

ourc

e, a

su

bsta

ntia

l pe

rman

ent

incr

ease

in

ambi

ent

noise

lev

els

in t

he P

roje

ct v

icin

ity

coul

d po

tent

ially

occ

ur.

a di

ffere

nce

of th

ree

dBA

bet

wee

n 24

-hou

r noi

se le

vels

is a

bare

ly-p

erce

ptib

le in

crea

se to

mos

t peo

ple.

A fi

ve d

BA in

crea

se is

read

ily

notic

eabl

e, a

nd a

diff

eren

ce o

f te

n dB

A w

ould

be

perc

eive

d as

a d

oubl

ing

of

loud

ness

. Be

caus

e th

e in

crea

se in

loca

l noi

se le

vels

alon

g ro

adw

ay s

egm

ents

resu

lting

from

impl

emen

tatio

n of

the

Proj

ect w

ould

not

exc

eed

the

esta

blish

ed

thre

shol

ds o

f sig

nific

ance

, th

is w

ould

not

rep

rese

nt a

sub

stant

ial

perm

anen

t in

crea

se in

am

bien

t noi

se le

vels.

Th

eref

ore,

this

impa

ct w

ould

be

cons

ider

ed

less

than

sign

ifica

nt a

nd n

o m

itiga

tion

mea

sure

s are

requ

ired.

On-

Site

Non

-Veh

icul

ar N

oise

Upo

n co

mpl

etio

n of

the

prop

osed

resid

entia

l dev

elop

men

ts as

soci

ated

with

the

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-48

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

Proj

ect,

sour

ces

of n

oise

tha

t w

ould

be

gene

rate

d by

ope

ratio

n of

the

new

re

siden

tial b

uild

ings

wou

ld in

clud

e ne

w s

tatio

nary

sou

rces

suc

h as

ven

tilat

ion

and

air

cond

ition

ing

(HV

AC)

sys

tem

s. I

n ad

ditio

n, l

imite

d co

mm

erci

al

deve

lopm

ent

(75,

000

squa

re

feet

of

co

mm

erci

al

spac

e)

wou

ld

also

be

de

velo

ped.

As s

uch,

the

pote

ntia

l com

mer

cial

dev

elop

men

ts w

ould

also

incl

ude

statio

nary

sou

rces

of n

oise

suc

h as

HV

AC

syste

ms

as w

ell a

s no

ise a

ssoc

iate

d w

ith d

eliv

ery

vehi

cles

and

load

ing

dock

act

iviti

es.

Thus

, with

com

plia

nce

with

th

e pr

ovisi

ons o

f the

Tow

n N

oise

Ord

inan

ce, p

oten

tial n

oise

impa

cts

asso

ciat

ed

with

H

VA

C

syste

ms

and

com

mer

cial

lo

adin

g do

ck

activ

ities

w

ould

be

co

nsid

ered

less

than

sign

ifica

nt a

nd n

o m

itiga

tion

mea

sure

s are

requ

ired.

Ice

Skat

ing

Pond

As d

iscus

sed

prev

ious

ly in

Sec

tion

III, P

roje

ct D

escr

iptio

n, th

e Pr

ojec

t wou

ld b

e bu

ilt i

n se

vera

l ph

ases

with

the

con

struc

tion

of a

Hot

el,

whi

ch i

nclu

des

an

outd

oor

ice

skat

ing

pond

, occ

urrin

g in

the

firs

t ph

ase.

Th

e op

erat

ion

of t

he

outd

oor i

ce sk

atin

g po

nd w

ould

requ

ire th

e us

e of

var

ious

type

s of e

quip

men

t in

orde

r to

freez

e th

e w

ater

con

tain

ed w

ithin

the

ice

skat

ing

pond

, to

rem

ove

snow

du

ring

the

win

ter m

onth

s an

d to

mai

ntai

n th

e su

rface

of t

he ic

e. T

hese

var

ious

ty

pes

of e

quip

men

t all

have

the

pote

ntia

l to

gene

rate

noi

se w

hich

may

exc

eed

the

Tow

n of

Mam

mot

h La

kes

Noi

se a

nd L

and

Use

Com

patib

ility

Crit

eria

. Th

e re

sulti

ng n

oise

leve

l wou

ld b

e w

ithin

the

50 –

65

dBA

“no

rmal

ly a

ccep

tabl

e”

cate

gory

for m

ulti-

fam

ily re

siden

tial u

ses o

f the

Lan

d U

se C

ompa

tibili

ty

Impa

ct N

OIS

E-5

Exc

essiv

e O

pera

tiona

l Gro

undb

orne

Vib

ratio

n

Impa

cts

of g

roun

dbor

ne v

ibra

tion

asso

ciat

ed w

ith P

roje

ct c

onstr

uctio

n ar

e di

scus

sed

abov

e un

der I

mpa

ct N

oise

-2.

The

Proj

ect d

oes

not i

nvol

ve a

ny o

ther

so

urce

s of

gro

undb

orne

vib

ratio

n an

d gr

ound

born

e no

ise.

Ther

efor

e, P

roje

ct

impa

cts

asso

ciat

ed w

ith e

xces

sive

oper

atio

nal g

roun

dbor

ne v

ibra

tion

wou

ld b

e co

nsid

ered

less

than

sign

ifica

nt a

nd n

o m

itiga

tion

mea

sure

s are

requ

ired.

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-49

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

Impa

ct N

OIS

E-6

Cum

ulat

ive

Impa

cts

Dev

elop

men

t of

the

Pro

ject

in

com

bina

tion

with

the

rel

ated

pro

ject

s w

ould

re

sult

in a

n in

crea

se i

n co

nstru

ctio

n-re

late

d an

d tra

ffic-

rela

ted

noise

in

the

Proj

ect a

rea.

Th

e ne

ares

t res

iden

tial r

elat

ed p

roje

cts

to p

ortio

n of

the

Proj

ect

site

whe

re c

onstr

uctio

n ac

tiviti

es w

ould

be

conc

entra

ted,

how

ever

, are

loca

ted

appr

oxim

atel

y 1,

500

feet

to

the

north

(“T

he S

herw

in”)

and

1,0

00 f

eet

to t

he

wes

t (“

Snow

cree

k V

I –

The

Lodg

es”

and

“Sno

wcr

eek

VII”

). D

ue t

o th

e di

stanc

e of

the

se r

ecep

tors

fro

m t

he a

reas

of

the

Proj

ect

site

whe

re m

ost

cons

truct

ion

wou

ld b

e co

ncen

trate

d, a

nd t

he f

act

that

noi

se a

ttenu

ates

at

appr

oxim

atel

y six

dB

(A)

per

doub

ling

of d

istan

ce,

it is

not

likel

y th

at

cons

truct

ion

noise

wou

ld b

e au

dibl

e at

thes

e lo

catio

ns, t

hus

grea

tly m

inim

izin

g or

elim

inat

ing

the

pote

ntia

l cum

ulat

ive

noise

effe

ct.

Add

ition

ally

, eac

h of

the

rela

ted

proj

ects

wou

ld b

e su

bjec

t to

Sect

ion

15.0

8.02

0 of

the

Tow

n M

unic

ipal

Cod

e, w

hich

lim

its th

e ho

urs

of a

llow

able

con

struc

tion

activ

ities

. Ea

ch o

f the

rela

ted

proj

ects

wou

ld a

lso b

e su

bjec

t to

Sect

ion

8.16

.090

of

the

Tow

n N

oise

Ord

inan

ce, w

hich

esta

blish

es n

oise

stan

dard

s for

mob

ile a

nd

statio

nary

con

struc

tion

equi

pmen

t. W

ith c

onfo

rman

ce w

ith S

ectio

ns 1

5.08

.020

of

the

Tow

n M

unic

ipal

Cod

e an

d 8.

16.0

90 o

f th

e To

wn

Noi

se O

rdin

ance

, the

cu

mul

ativ

e co

nstru

ctio

n no

ise im

pact

wou

ld b

e le

ss th

an si

gnifi

cant

.

Cum

ulat

ive

deve

lopm

ent

in t

he T

own

wou

ld n

ot r

esul

t in

the

exp

osur

e of

pe

ople

to

or t

he g

ener

atio

n of

exc

essiv

e gr

ound

born

e vi

brat

ion,

due

to

the

loca

lized

nat

ure

of v

ibra

tion

impa

cts a

nd th

e fa

ct th

at a

ll co

nstru

ctio

n w

ould

not

oc

cur a

t the

sam

e tim

e an

d at

the

sam

e lo

catio

n. T

here

fore

, thi

s im

pact

wou

ld

be c

onsid

ered

less

than

sign

ifica

nt a

nd n

o m

itiga

tion

mea

sure

s are

requ

ired.

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-50

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

POPU

LA

TIO

N A

ND

HO

USI

NG

(PO

P)

Impa

ct P

OP-

1 P

opul

atio

n G

rowt

h A

ssoc

iate

d wi

th E

mpl

oym

ent

Popu

latio

n G

row

th D

ue to

Tem

pora

ry Jo

bs

The

Proj

ect w

ould

res

ult i

n em

ploy

men

t opp

ortu

nitie

s du

ring

its c

onstr

uctio

n pe

riod.

Pr

ojec

t-rel

ated

con

struc

tion

wor

kers

wou

ld n

ot b

e lik

ely

to r

eloc

ate

thei

r pla

ce o

f res

iden

ce a

s a c

onse

quen

ce o

f wor

king

on

the

Proj

ect.

The

refo

re,

Proj

ect i

mpa

cts

wou

ld b

e le

ss th

an s

igni

fican

t and

no

miti

gatio

n m

easu

res

are

requ

ired.

Popu

latio

n G

row

th D

ue to

Per

man

ent J

obs

In a

dditi

on to

the

new

res

iden

ts as

soci

ated

with

the

prop

osed

res

iden

tial u

ses,

the

Proj

ect

wou

ld c

reat

e an

esti

mat

ed 9

25 f

ullti

me

equi

vale

nt e

mpl

oyee

s (F

TEEs

). T

he S

tate

of

Calif

orni

a do

cum

ents

the

Tow

n of

Mam

mot

hs L

akes

’ un

empl

oym

ent r

ate

at 5

.3 p

erce

nt, t

otal

ing

300

peop

le in

May

200

7. T

here

fore

, so

me

of th

e em

ploy

men

t ass

ocia

ted

with

the

Proj

ect c

ould

be

fille

d by

per

sons

fro

m th

e ex

istin

g em

ploy

men

t bas

e in

the

Proj

ect a

rea

and/

or b

y fu

ture

resid

ents

at

the

Proj

ect s

ite.

How

ever

, for

a c

onse

rvat

ive

anal

ysis,

it is

ass

umed

that

all

925

empl

oyee

s w

ould

rel

ocat

e to

the

are

a, i

ntro

duci

ng 9

25 e

mpl

oyee

-rela

ted

resid

ents

to th

e To

wn

thro

ugh

indi

rect

pop

ulat

ion

grow

th d

ue to

per

man

ent j

obs.

Th

is is

cons

isten

t w

ith t

he g

row

th a

ntic

ipat

ed i

n th

e 20

07 G

ener

al P

lan.

Th

eref

ore,

im

pact

s as

soci

ated

with

pop

ulat

ion

grow

th d

ue t

o pe

rman

ent

jobs

w

ould

be

less

than

sign

ifica

nt.

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Impa

ct P

OP-

2 P

opul

atio

n G

rowt

h A

ssoc

iate

d wi

th N

ew In

fras

truct

ure

Infra

struc

ture

ass

ocia

ted

with

the

Proj

ect w

ould

serv

e th

e Pr

ojec

t site

and

wou

ld

not

faci

litat

e ad

ditio

nal

deve

lopm

ent

as a

res

ult

of i

ncre

ased

inf

rastr

uctu

re.

Ther

efor

e, im

pact

s ass

ocia

ted

with

the

deve

lopm

ent o

f the

Pro

ject

wou

ld b

e le

ss

than

sign

ifica

nt.

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-51

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

Impa

ct P

OP-

3 P

opul

atio

n G

rowt

h As

soci

ated

with

New

Hou

sing

The

Proj

ect w

ould

resu

lt in

con

struc

tion

of 1

,050

dw

ellin

g un

its.

The

Proj

ect i

s an

ticip

ated

to

co

ntrib

ute

ten

perc

ent

to

futu

re

build

out

deve

lopm

ent

(in

com

bina

tion

with

all

rem

aini

ng S

now

cree

k de

velo

pmen

ts).

Ther

efor

e, im

pact

s to

pop

ulat

ion

grow

th a

ssoc

iate

d w

ith th

e de

velo

pmen

t of t

he P

roje

ct w

ould

be

less

than

sign

ifica

nt.

Add

ition

ally

, the

Pro

ject

will

com

ply

with

the

Affo

rdab

le H

ousin

g M

itiga

tion

Regu

latio

ns T

own

Mun

icip

al C

ode

17.3

6 an

d w

ill p

rovi

de h

ousin

g fo

r th

e es

timat

ed 9

25 F

ull

Tim

e Eq

uiva

lent

Em

ploy

ees

(FTE

Es)

asso

ciat

ed w

ith t

he

Proj

ect.

A h

ousin

g m

itiga

tion

deve

lopm

ent p

lan

will

be

subm

itted

alo

ng w

ith

the

Proj

ect g

ener

atin

g th

e ne

ed f

or th

e ho

usin

g (s

ee A

ppen

dix

N).

Cur

rent

ly,

that

pla

n in

clud

es a

com

bina

tion

of th

e fo

llow

ing

mea

sure

s: (1

) 80

on-s

ite u

nits,

(2

) hou

sing

cred

its, a

nd (3

) pay

men

t of i

n-lie

u fe

es.

Hou

sing

will

be

prov

ided

at

250

squa

re fe

et p

er F

TEE.

The

refo

re, i

mpa

cts

to w

orkf

orce

hou

sing

asso

ciat

ed

with

the

deve

lopm

ent o

f the

Pro

ject

wou

ld b

e le

ss th

an si

gnifi

cant

.

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Impa

ct P

OP-

4 C

umul

ativ

e Im

pact

s

Of t

he 4

1 re

late

d pr

ojec

ts lis

ted,

34

incl

ude

resid

entia

l dev

elop

men

ts w

ithin

the

Tow

n, to

talin

g ap

prox

imat

ely

3,67

4 re

siden

tial u

nits

that

wou

ld a

ccom

mod

ate

a po

pula

tion

of a

ppro

xim

atel

y 8,

900

pers

ons.

Whe

n co

mbi

ned

with

the

Proj

ect’s

1,

050

units

and

esti

mat

ed p

opul

atio

n of

2,5

62 p

erso

ns, c

umul

ativ

e re

siden

tial

deve

lopm

ent a

mou

nts

to a

ppro

xim

atel

y 4,

724

units

and

app

roxi

mat

ely

11,4

62

pers

ons.

By 2

024,

dev

elop

men

t of t

he P

roje

ct in

con

junc

tion

with

the

appl

icab

le re

late

d pr

ojec

ts w

ould

acc

ount

for a

ppro

xim

atel

y 28

per

cent

of t

he 1

6,71

0 an

ticip

ated

ho

usin

g un

its a

nd fo

r app

roxi

mat

ely

19 p

erce

nt o

f the

60,

700

antic

ipat

ed to

tal

popu

latio

n.

For t

he re

ason

s not

ed a

bove

, dev

elop

men

t of t

he P

roje

ct in

con

junc

tion

with

the

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-52

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

appl

icab

le r

elat

ed p

roje

cts

wou

ld a

ssist

the

Tow

n in

mee

ting

its f

air

shar

e of

re

gion

al h

ousin

g ne

ed,

cons

titut

ing

a be

nefic

ial

rath

er t

han

adve

rse

hous

ing

impa

ct.

Beca

use

deve

lopm

ent o

f the

Pro

ject

and

the

rela

ted

proj

ects

wou

ld h

elp

addr

ess

a po

rtion

of u

nmet

hou

sing

dem

and

and

serv

e an

ticip

ated

pop

ulat

ion

grow

th in

th

e Pr

ojec

t are

a, e

ither

dire

ctly

(e.g

., by

pro

posin

g ne

w h

omes

and

bus

ines

ses)

, or

in

dire

ctly

(e

.g.,

thro

ugh

exte

nsio

n of

ro

ads

or

othe

r in

frastr

uctu

re),

cum

ulat

ive

impa

cts w

ould

be

less

than

sign

ifica

nt.

PUBL

IC S

ERV

ICES

(PS)

Impa

ct P

S-1

Pol

ice

Serv

ices

Whi

le th

e Pr

ojec

t wou

ld in

crea

se th

e nu

mbe

r of p

erso

ns a

nd le

vel o

f act

ivity

on

the

Proj

ect

site,

giv

en t

he t

ypes

of

uses

ass

ocia

ted

with

a r

esor

t re

crea

tion

cent

er,

it is

reas

onab

le t

o ex

pect

tha

t th

e Pr

ojec

t w

ould

not

res

ult

in a

m

eani

ngfu

l inc

reas

e in

the

amou

nt o

f crim

e in

the

Proj

ect a

rea.

Fur

ther

, giv

en

that

the

Proj

ect i

s not

exp

ecte

d to

gen

erat

e a

cons

ider

able

incr

ease

in c

rime,

the

affe

ct th

at th

e Pr

ojec

t wou

ld h

ave

on re

spon

se ti

mes

wou

ld b

e m

inim

al, i

f at a

ll.

Add

ition

ally

, ac

cord

ing

to t

he M

amm

oth

Lake

s Po

lice

Dep

artm

ent

(MLP

D),

alth

ough

ad

ditio

nal

polic

e eq

uipm

ent

and

staff

wou

ld

be

nece

ssar

y to

ac

com

mod

ate

the

Proj

ect,

the

addi

tiona

l dem

and

for p

olic

e se

rvic

es c

reat

ed b

y th

e Pr

ojec

t wou

ld n

ot re

quire

the

need

for n

ew o

r alte

red

polic

e fa

cilit

ies

othe

r th

an th

ose

curre

ntly

pla

nned

for f

utur

e po

lice

staffi

ng a

nd fa

cilit

ies.

The

refo

re,

Proj

ect

impa

cts

on p

olic

e se

rvic

es w

ould

be

less

tha

n sig

nific

ant

and

no

miti

gatio

n m

easu

res a

re re

quire

d.

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Impa

ct P

S-2P

olic

e Se

rvic

es (C

umul

ativ

e)

Miti

gatio

n M

easu

res P

S-2a

thro

ugh

2c

Incr

ease

s in

pop

ulat

ion

in t

he T

own

have

the

pot

entia

l to

inc

reas

e ca

lls f

or

polic

e pr

otec

tion

serv

ices

. Th

e im

pact

s cr

eate

d by

new

dev

elop

men

t wou

ld b

e M

itiga

tion

Mea

sure

PS-

2a

Bars

and

resta

uran

ts th

at c

ater

to la

te n

ight

cro

wds

will

hav

e tra

ined

sec

urity

per

sonn

el in

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-53

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

redu

ced

by t

he i

ncor

pora

tion

of s

ecur

ity m

easu

res

(e.g

., se

curit

y pe

rson

nel

staffe

d at

any

new

bar

s and

resta

uran

ts th

at c

ater

to la

te n

ight

cro

wds

and

priv

ate

secu

rity

patro

lling

th

e Pr

ojec

t) as

w

ell

as

the

desig

natio

n of

Tr

ansie

nt

Occ

upan

cy T

ax (

TOT)

dol

lars

and

Dev

elop

er I

mpa

ct F

ees

for

polic

e se

rvic

es.

How

ever

, the

Pro

ject

in c

onju

nctio

n w

ith th

e re

late

d pr

ojec

ts w

ould

requ

ire th

at

the

new

pol

ice

faci

lity

be c

ompl

eted

in th

e ne

xt tw

o to

thre

e ye

ars o

r in

the

late

r ph

ases

of

the

Proj

ect

to m

eet

thes

e ne

eds.

As

a re

sult,

cum

ulat

ive

polic

e pr

otec

tion

impa

cts a

re c

onsid

ered

to b

e sig

nific

ant.

New

pol

ice

faci

litie

s wou

ld

be re

quire

d in

ord

er to

fully

miti

gate

this

signi

fican

t cum

ulat

ive

impa

ct to

a le

ss-

than

-sig

nific

ant l

evel

.

Beca

use

the

Proj

ect

in c

onju

nctio

n w

ith a

ntic

ipat

ed c

umul

ativ

e de

velo

pmen

t w

ould

res

ult

in s

igni

fican

t im

pact

s re

late

d to

pol

ice

prot

ectio

n se

rvic

es,

the

follo

win

g m

itiga

tion

mea

sure

s are

reco

mm

ende

d by

the

MLP

D:

orde

r to

redu

ce d

eman

d on

pol

ice

serv

ices

.

Miti

gatio

n M

easu

re P

S-2b

Prov

ide

fair

shar

e of

Dev

elop

er Im

pact

Fee

s to

ass

ist th

e M

LPD

in th

e co

nstru

ctio

n of

a

publ

ic sa

fety

and

disp

atch

faci

lity

and

hold

ing

faci

litie

s as n

eede

d.

Miti

gatio

n M

easu

re P

S-2c

Prov

ide

priv

ate

secu

rity

with

in t

he s

ite t

o pa

trol

the

non-

resid

entia

l co

mpl

ex i

n th

e ev

enin

gs, i

f nec

essa

ry, i

n or

der t

o re

duce

crim

inal

beh

avio

r, an

d w

ork

in c

onju

nctio

n w

ith

law

enf

orce

men

t to

solv

e cr

imes

and

crim

e pr

oble

ms.

Impa

ct P

S-3

Fire

Ser

vice

s

The

exist

ing

maj

or p

ublic

roa

ds th

at s

erve

the

Proj

ect s

ite a

re O

ld M

amm

oth

Road

, Min

aret

Roa

d an

d Fa

irway

Driv

e.

New

inte

rnal

acc

ess

road

s w

ould

be

crea

ted

on t

he P

roje

ct s

ite.

Emer

genc

y ve

hicl

es w

ould

circ

ulat

e th

roug

h th

e Pr

ojec

t are

a us

ing

the

inte

rnal

road

way

syste

m.

Seco

ndar

y ac

cess

for f

ire sa

fety

w

ould

be

deve

lope

d in

con

junc

tion

with

the

road

way

sys

tem

to p

rovi

de lo

oped

se

cond

ary

emer

genc

y ve

hicl

e ac

cess

and

egr

ess.

Em

erge

ncy

acce

ss w

ould

be

prov

ided

by

crea

ting

a se

cond

ary

acce

ss p

oint

to

the

Proj

ect

off

of O

ld

Mam

mot

h Ro

ad.

Fire

lane

s, tu

rnin

g ra

dii a

nd b

ack

up s

pace

aro

und

build

ings

w

ould

be

desig

ned

in c

oope

ratio

n w

ith lo

cal o

ffici

als

so a

s to

be

adeq

uate

for

em

erge

ncy

and

fire

equi

pmen

t ve

hicl

es.

Pav

emen

ts w

ould

be

desig

ned

to

supp

ort

load

s cr

eate

d by

em

erge

ncy

vehi

cle

traffi

c.

Stan

dpip

e an

d fir

e su

ppre

ssio

n sy

stem

s co

nnec

tions

wou

ld b

e in

corp

orat

ed in

to a

rchi

tect

ural

and

la

ndsc

apin

g de

sign

elem

ents

whe

re p

ract

ical

and

in lo

catio

ns a

cces

sible

to fi

re

equi

pmen

t.

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-54

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

The

Proj

ect w

ould

inco

rpor

ate

a nu

mbe

r of

fire

saf

ety

feat

ures

in a

ccor

danc

e w

ith a

pplic

able

MLF

PD fi

re-s

afet

y co

de a

nd T

own

regu

latio

ns fo

r con

struc

tion,

ac

cess

, fir

e flo

ws,

and

fire

hydr

ants.

Co

nsid

erin

g th

at t

he P

roje

ct s

ite i

s un

deve

lope

d an

d th

at c

urre

nt u

se o

f the

site

is li

mite

d to

ope

n sp

ace,

the

Proj

ect

wou

ld re

pres

ent a

mor

e in

tens

e us

e of

the

site.

Alth

ough

the

rela

tions

hip

is no

t di

rect

ly p

ropo

rtion

al, m

ore

inte

nse

uses

of l

and

typi

cally

resu

lt in

the

incr

ease

d po

tent

ial f

or f

ire a

nd e

mer

genc

y in

cide

nts.

Thu

s, th

e Pr

ojec

t wou

ld c

reat

e an

in

crea

sed

dem

and

for

fire

prot

ectio

n se

rvic

es.

How

ever

, ac

cord

ing

to t

he

Mam

mot

h La

kes

Fire

Pro

tect

ion

Dist

rict

(MLF

PD),

with

the

mut

ual-a

id

agre

emen

t with

nei

ghbo

ring

fire

distr

icts,

thei

r cur

rent

sta

ffing

and

equ

ipm

ent,

faci

lity

leve

ls ar

e ad

equa

te t

o ac

com

mod

ate

the

Proj

ect’s

dem

and

for

fire

prot

ectio

n se

rvic

es.

In

addi

tion,

the

MLF

PD i

s a

parti

cipa

nt i

n th

e To

wn’

s Em

erge

ncy

Ope

ratio

ns P

lan

(Pla

n) w

hich

incl

udes

the

Proj

ect a

rea.

Th

e Pl

an

wou

ld b

e re

vise

d w

ith t

he d

evel

opm

ent

of t

he P

roje

ct t

o in

clud

e an

y ne

eded

up

date

s or

cha

nges

. It

wou

ld b

e an

ticip

ated

that

onl

y m

inor

cha

nges

wou

ld b

e ne

eded

to u

pdat

e th

e pl

an b

ased

upo

n th

e cu

rrent

pla

ns a

nd z

onin

g. T

here

fore

, Pr

ojec

t im

pact

s re

late

d to

fire

pro

tect

ion

serv

ices

wou

ld b

e le

ss th

an s

igni

fican

t an

d no

miti

gatio

n m

easu

res a

re re

quire

d.

Impa

ct P

S-4

Fire

Ser

vice

s (C

umul

ativ

e)

The

Proj

ect i

n co

njun

ctio

n w

ith th

e re

late

d pr

ojec

ts do

es c

umul

ativ

ely

incr

ease

th

e de

man

d fo

r fire

pro

tect

ion

serv

ices

in th

e M

LFPD

. Th

is is

prim

arily

a re

sult

of th

e nu

mbe

r and

type

of n

ew b

uild

ings

that

the

Proj

ect a

nd th

e re

late

d pr

ojec

ts br

ing

to th

e M

LFPD

. Th

e M

LFPD

is a

ntic

ipat

ing

the

hirin

g of

mor

e fu

lltim

e po

sitio

ns t

o in

crea

se t

heir

capa

bilit

y to

res

pond

to

addi

tiona

l ca

lls a

nd t

he

asso

ciat

ed

adm

inist

rativ

e w

ork

that

w

ill

com

e al

ong

with

in

crea

sed

deve

lopm

ent a

nd in

crea

sed

traffi

c vo

lum

es in

the

Tow

n.

The

incr

ease

in s

taff

and

equi

pmen

t is

bein

g pr

ovid

ed

for

by

incr

ease

s in

pr

oper

ty

tax

and

Dev

elop

men

t Im

pact

Fee

s (D

IFs)

. M

LFPD

reco

gniz

es th

at th

e ca

ll vo

lum

e an

d

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-55

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

inci

dent

com

plex

ity w

ill c

ontin

ue t

o in

crea

se a

s th

e po

pula

tion

and

unit

num

bers

in

crea

se.

A

s sta

ted

prev

ious

ly,

MLF

PD

is in

th

e pr

oces

s of

re

mod

elin

g an

d en

larg

ing

Fire

Sta

tion

One

in re

spon

se to

add

ition

al c

omm

unity

de

velo

pmen

t. T

he M

LFPD

is a

ntic

ipat

ing

the

hirin

g of

mor

e fu

lltim

e po

sitio

ns

to i

ncre

ase

thei

r ca

pabi

lity

to r

espo

nd t

o ad

ditio

nal

calls

and

the

ass

ocia

ted

adm

inist

rativ

e w

ork

that

will

com

e al

ong

with

incr

ease

d de

velo

pmen

t. M

LFPD

is

also

inv

olve

d in

the

dev

elop

men

t of

a s

trate

gic

plan

tha

t w

ill a

id t

he

depa

rtmen

t in

pla

nnin

g fo

r th

e fu

ture

. Th

eref

ore,

cum

ulat

ive

impa

cts

to f

ire

prot

ectio

n se

rvic

es w

ould

be

less

than

sig

nific

ant a

nd n

o m

itiga

tion

mea

sure

s ar

e re

quire

d.

Impa

ct P

S-5

Sch

ool S

ervi

ces

The

scho

ols

that

wou

ld s

erve

the

Proj

ect e

xper

ienc

e ste

ady

enro

llmen

t and

are

cu

rrent

ly a

t or

nea

r ca

paci

ty.

The

Pro

ject

has

the

pot

entia

l to

gen

erat

e ap

prox

imat

ely

475

Kin

derg

arte

n th

roug

h Tw

elfth

gra

de s

tude

nts.

Bas

ed o

n th

e de

velo

per f

ees

esta

blish

ed b

y ea

ch o

f the

sch

ool d

istric

ts, th

e Pr

ojec

t app

lican

t w

ould

be

requ

ired

to p

ay $

2.63

per

squ

are

foot

of r

esid

entia

l dev

elop

men

t and

$0

.42

per

squa

re f

eet

of c

omm

erci

al d

evel

opm

ent.

As

state

d pr

evio

usly

, pr

ovid

ed in

§65

996

of th

e Ca

lifor

nia

Gov

ernm

ent C

ode,

the

paym

ent o

f su

ch

fees

is

deem

ed t

o fu

lly m

itiga

te t

he i

mpa

cts

of n

ew d

evel

opm

ent

on s

choo

l se

rvic

es.

The

refo

re,

with

pay

men

t of

the

se r

equi

red

deve

lope

r fe

es,

Proj

ect

impa

cts

to s

choo

l se

rvic

es w

ould

be

less

tha

n sig

nific

ant

and

no m

itiga

tion

mea

sure

s are

requ

ired.

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Impa

ct P

S-6

Sch

ool S

ervi

ces (

Cum

ulat

ive)

Impl

emen

tatio

n of

the

Pro

ject

in

conj

unct

ion

with

the

rel

ated

pro

ject

s w

ould

fu

rther

incr

ease

the

dem

and

for s

choo

l ser

vice

s. H

owev

er, a

s w

ith th

e Pr

ojec

t, th

e ap

plic

ants

of th

e re

late

d pr

ojec

ts w

ould

be

requ

ired

to p

ay d

evel

oper

fees

to

the

MSU

D;

paym

ent

of t

hese

fee

s w

ould

ful

ly m

itiga

te a

ny i

mpa

ct t

hat

the

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-56

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

rela

ted

proj

ects

wou

ld h

ave

on s

choo

l se

rvic

es.

As

state

d pr

evio

usly

, th

e Pr

ojec

t’s im

pact

s to

sch

ool s

ervi

ces

wou

ld b

e le

ss th

an s

igni

fican

t. T

here

fore

, cu

mul

ativ

e im

pact

s to

sch

ool

serv

ices

wou

ld b

e le

ss t

han

signi

fican

t an

d no

m

itiga

tion

mea

sure

s are

requ

ired.

Impa

ct P

S-7

Par

ks a

nd R

ecre

atio

n Se

rvic

es

The

Proj

ect’s

pro

pose

d re

crea

tiona

l an

d pu

blic

am

eniti

es (

as l

isted

abo

ve)

in

conj

unct

ion

with

the

Tow

n’s

curre

nt f

acili

ties

and

the

colle

ctio

n of

Dev

elop

er

Impa

ct F

ees

(DIF

s) t

hat

supp

ort

the

Tow

n’s

park

and

rec

reat

ion

fund

(as

re

quire

d by

To

wn

Mun

icip

al

Code

15

.16.

081)

, w

ould

be

ad

equa

te

to

acco

mm

odat

e th

e Pr

ojec

t’s

dem

and

for

park

s an

d re

crea

tiona

l se

rvic

es.

A

ppen

dix

M o

f th

is D

raft

EIR

incl

udes

the

Tow

n’s

curre

nt D

evel

oper

Im

pact

Fe

e Sc

hedu

le d

ated

Jun

e 20

07.

As

deve

lopm

ent o

ccur

s w

ithin

the

Proj

ect a

rea,

D

evel

oper

Im

pact

Fee

s w

ill b

e pa

id t

o th

e To

wn

to o

ffset

the

rec

reat

iona

l fa

cilit

ies a

nd m

aint

enan

ce.

No

addi

tiona

l par

ks o

r rec

reat

iona

l fac

ilitie

s bey

ond

wha

t ar

e pr

opos

ed w

ould

be

requ

ired.

Th

eref

ore,

Pro

ject

im

pact

s to

par

k se

rvic

es w

ould

be

less

than

sign

ifica

nt a

nd n

o m

itiga

tion

mea

sure

s are

requ

ired.

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Impa

ct P

S-8

Par

ks a

nd R

ecre

atio

n Se

rvic

es (C

umul

ativ

e)

As

with

the

Proj

ect,

the

appl

ican

ts of

the

rela

ted

proj

ects

wou

ld b

e re

quire

d to

pa

y D

evel

oper

Im

pact

Fee

s th

at s

uppo

rt th

e To

wn’

s pa

rk a

nd r

ecre

atio

n fu

nd;

paym

ent o

f the

se fe

es w

ould

fully

miti

gate

any

impa

ct th

at th

e re

late

d pr

ojec

ts w

ould

hav

e on

par

k an

d re

crea

tiona

l se

rvic

es.

As

state

d pr

evio

usly

, th

e Pr

ojec

t’s i

mpa

cts

to p

ark

serv

ices

wou

ld b

e le

ss t

han

signi

fican

t. T

here

fore

, cu

mul

ativ

e im

pact

s to

par

k se

rvic

es w

ould

be

less

tha

n sig

nific

ant

and

no

miti

gatio

n m

easu

res a

re re

quire

d.

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Impa

ct P

S-9

Sno

w Re

mov

al S

ervi

ces

Road

way

mai

nten

ance

and

sno

w re

mov

al o

n pr

ivat

e ro

ads

and

priv

ate

prop

erty

N

o m

itiga

tion

mea

sure

s are

requ

ired.

Le

ss T

han

Sign

ifica

nt

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-57

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

is th

e re

spon

sibili

ty o

f th

e la

nd o

wne

rs.

The

refo

re,

Proj

ect

impa

cts

to t

he

Tow

n’s s

now

rem

oval

ser

vice

s wou

ld b

e le

ss th

an si

gnifi

cant

and

no

miti

gatio

n m

easu

res a

re re

quire

d.

Impa

ct P

S-10

Sno

w Re

mov

al S

ervi

ces (

Cum

ulat

ive)

The

Proj

ect

in c

onju

nctio

n w

ith t

he r

elat

ed p

roje

cts

wou

ld n

ot c

umul

ativ

ely

incr

ease

the

dem

and

for

snow

rem

oval

ser

vice

s in

the

Tow

n.

The

rela

ted

proj

ects

in th

e To

wn

are

prim

arily

priv

ate

proj

ects

and

ther

efor

e, a

s w

ith th

e Pr

ojec

t, th

e pr

ivat

e la

nd o

wne

rs w

ould

be

resp

onsib

le f

or t

heir

own

snow

re

mov

al se

rvic

es.

This

wou

ld fu

lly m

itiga

te a

ny im

pact

that

the

rela

ted

proj

ects

wou

ld h

ave

on s

now

rem

oval

ser

vice

s in

the

Tow

n.

As

state

d pr

evio

usly

, the

Pr

ojec

t’s im

pact

s to

sno

w re

mov

al s

ervi

ces

wou

ld b

e le

ss th

an s

igni

fican

t. T

he

impl

emen

tatio

n of

the

rela

ted

proj

ects

wou

ld n

ot re

quire

the

need

for n

ew s

taff

or n

ew o

r al

tere

d pu

blic

wor

ks f

acili

ties.

The

refo

re,

cum

ulat

ive

impa

cts

to

snow

rem

oval

ser

vice

s w

ould

be

less

tha

n sig

nific

ant

and

no m

itiga

tion

mea

sure

s are

requ

ired.

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

REC

REA

TIO

N (R

EC)

Impa

ct R

EC-1

Follo

win

g th

e To

wn’

s req

uire

men

t of f

ive

acre

s of p

arkl

and

per 1

,000

resid

ents,

th

e pa

rkla

nd r

equi

rem

ent

for

the

Proj

ect

is ap

prox

imat

ely

12.8

1 ac

res.

The

Pr

ojec

t wou

ld e

xpan

d th

e ex

istin

g pr

ivat

ely

owne

d, b

ut p

ublic

ly a

cces

sible

gol

f co

urse

, int

o th

e 15

5-ac

re S

now

cree

k G

olf

Cour

se.

In a

dditi

on, a

s pr

evio

usly

sta

ted

the

Proj

ect w

ould

pro

vide

oth

er re

crea

tiona

l fac

ilitie

s inc

ludi

ng a

pub

licly

ac

cess

ible

gol

f clu

bhou

se, O

utfit

ters

’ Cab

in, I

nter

pret

ive

Cent

er, a

nd ic

e sk

atin

g rin

k/po

nd.

The

Proj

ect’s

pro

pose

d re

crea

tiona

l and

pub

lic a

men

ities

, as

liste

d ab

ove,

in c

onju

nctio

n w

ith th

e To

wn’

s cu

rrent

fac

ilitie

s an

d th

e co

llect

ion

of

Dev

elop

er Im

pact

Fee

s (D

IFs)

that

supp

ort t

he T

own’

s par

k an

d re

crea

tion

fund

w

ould

be

adeq

uate

to

acco

mm

odat

e th

e Pr

ojec

t’s d

eman

d fo

r pa

rks

and

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-58

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

recr

eatio

nal

serv

ices

. T

here

fore

, w

ith p

aym

ent

of D

IFs

and

the

Proj

ect’s

pr

ovisi

on o

f new

pub

licly

ava

ilabl

e re

crea

tiona

l am

eniti

es, t

he P

roje

ct’s

impa

cts

on T

own

park

land

wou

ld b

e le

ss-th

an-s

igni

fican

t an

d no

miti

gatio

n m

easu

res

are

requ

ired.

The

Nat

iona

l Fo

rest

land

sur

roun

ding

the

Pro

ject

site

will

lik

ely

expe

rienc

e in

crea

sed

use

as a

res

ult o

f Pr

ojec

t im

plem

enta

tion.

Th

e de

velo

pmen

t of

the

Out

fitte

rs’ C

abin

as

a fo

cal p

oint

for e

ntry

into

the

Inyo

Nat

iona

l For

est w

ould

al

levi

ate

exist

ing

incu

rsio

ns to

priv

ate

prop

erty

by

back

coun

try u

sers

and

wou

ld

serv

e to

red

uce

impa

cts

obse

rved

at

othe

r ac

cess

rou

tes

in c

urre

nt u

se.

The

Proj

ect w

ould

not

phy

sical

ly a

lter o

r pro

duce

any

dire

ct im

pact

on

land

with

in

the

Inyo

Nat

iona

l For

est.

The

refo

re, p

oten

tial i

mpa

cts

to th

e N

atio

nal F

ores

t la

nd a

djac

ent t

o th

e Pr

ojec

t site

wou

ld b

e le

ss-th

an-s

igni

fican

t and

no

miti

gatio

n m

easu

res a

re re

quire

d.

Impa

ct R

EC-2

Impl

emen

tatio

n of

the

Proj

ect w

ould

res

ult i

n th

e re

mov

al o

f pr

ivat

ely

owne

d pu

blic

ly a

cces

sible

driv

ing

rang

e fa

cilit

ies

loca

ted

in t

he e

aste

rn s

ectio

n of

pa

rcel

40-

070-

10 a

nd th

e no

rthea

st co

rner

of

parc

el 4

0-07

0-11

. A

dditi

onal

ly,

the

exist

ing

priv

atel

y ow

ned

publ

icly

acc

essib

le n

ine-

hole

Sno

wcr

eek

Gol

f Co

urse

wou

ld b

e te

mpo

raril

y cl

osed

for m

inor

cha

nges

. H

owev

er, d

evel

opm

ent

on th

e Pr

ojec

t site

wou

ld in

clud

e a

reso

rt co

mpo

nent

with

recr

eatio

nal e

lem

ents

and

addi

tiona

l, sta

nd-a

lone

recr

eatio

n co

mpo

nent

s. N

o po

licie

s co

ncer

ning

the

avai

labi

lity

of g

olf

driv

ing

rang

es h

ave

been

ado

pted

by

the

Tow

n.

Thus

, de

spite

the

rem

oval

of a

priv

atel

y ow

ned

publ

icly

acc

essib

le d

rivin

g ra

nge

and

the

tem

pora

ry l

oss

of u

se o

f th

e ex

istin

g ni

ne-h

ole

golf

cour

se f

or m

inor

ch

ange

s, th

e Pr

ojec

t wou

ld in

crea

se th

e ov

eral

l am

ount

of

publ

ic a

nd p

rivat

e re

crea

tion

oppo

rtuni

ties

in t

he M

amm

oth

Lake

s ar

ea.

The

refo

re,

Proj

ect

impa

cts a

ffect

ing

Tow

n re

crea

tion

faci

litie

s wou

ld b

e le

ss-th

an-s

igni

fican

t.

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-59

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

Impa

ct R

EC-3

The

Proj

ect c

onsis

ts of

bui

ld-o

ut o

f th

e re

mai

ning

app

roxi

mat

ely

237

acre

s of

th

e M

aste

r Pl

an a

rea

in o

rder

to

fulfi

ll th

e vi

sion

of t

he p

revi

ously

app

rove

d 19

74 a

nd 1

981

Mas

ter P

lans

. Th

e Pr

ojec

t is v

iew

ed a

s a re

sort

recr

eatio

n ce

nter

w

ith r

esid

entia

l us

es, o

utdo

or u

se a

reas

, and

mul

tiple

opt

ions

for

rec

reat

iona

l an

d pu

blic

am

eniti

es (a

s des

crib

ed in

Impa

ct R

EC-1

). H

owev

er, t

he P

roje

ct a

lso

relie

s on

exi

sting

rec

reat

iona

l el

emen

ts in

the

sur

roun

ding

are

a.

Thes

e re

crea

tiona

l ele

men

ts in

clud

e, b

ut a

re n

ot li

mite

d to

, the

Mam

mot

h M

ount

ain

Ski

Are

a, t

he S

herw

in R

ange

, K

erry

Mea

dow

Tra

il an

d th

e In

yo N

atio

nal

Fore

st.

Beca

use

muc

h of

the

Proj

ect r

elie

s on

and

will

cre

ate

som

e ad

ditio

nal

dem

and

upon

thes

e ex

istin

g re

crea

tiona

l ele

men

ts, th

e Pr

ojec

t will

hav

e so

me

impa

ct,

but

not

a sig

nific

ant

impa

ct,

on e

xisti

ng r

ecre

atio

nal

reso

urce

s, as

pr

evio

usly

disc

usse

d.

The

priv

atel

y ow

ned

Proj

ect s

ite h

as p

erio

dica

lly b

een

cros

sed

by p

edes

trian

s an

d hi

kers

for

pur

pose

s of

obt

aini

ng a

cces

s to

the

She

rwin

Ran

ge a

nd I

nyo

Nat

iona

l For

est.

The

dev

elop

men

t of t

he P

roje

ct w

ill re

quire

per

sons

who

may

ha

ve p

revi

ously

cro

ssed

the

Proj

ect s

ite to

now

hik

e ar

ound

the

perim

eter

of t

he

Proj

ect s

ite to

reac

h th

ese

area

s. T

he P

roje

ct a

pplic

ant h

as p

ropo

sed

to p

rovi

de

a po

rtal a

long

the

easte

rn e

dge

of th

e Pr

ojec

t site

. Th

at a

cces

s, w

hile

not

as

conv

enie

nt a

s th

e cu

rrent

acc

ess

poin

ts an

d ro

utes

, will

be

perm

itted

and

law

ful

and

will

be

enha

nced

with

a fa

cilit

y th

at w

ill p

rovi

de o

ppor

tuni

ties

for p

erso

ns

ente

ring

thos

e pu

blic

land

s to

ren

t ski

equ

ipm

ent a

nd o

ther

spo

rts e

quip

men

t.

With

thi

s po

rtal

and

the

asso

ciat

ed a

men

ities

, th

e im

pact

will

be

less

tha

n sig

nific

ant.

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Impa

ct R

EC-4

Cum

ulat

ive

Impa

cts

The

rela

ted

proj

ects

in th

e To

wn

are

prim

arily

resid

entia

l pro

ject

s. R

esid

entia

l pr

ojec

ts ty

pica

lly h

ave

the

grea

test

impa

ct o

n pa

rks

and

recr

eatio

nal f

acili

ties,

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-60

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

beca

use

they

gen

erat

e th

e gr

eate

st us

ers

of p

arks

and

rec

reat

iona

l fa

cilit

ies

– fa

mili

es

with

ch

ildre

n.

Ther

efor

e,

deve

lopm

ent

in

Mam

mot

h La

kes

will

co

ntin

ue t

o in

crea

se d

eman

d at

all

leve

ls fo

r re

crea

tiona

l op

portu

nitie

s an

d fa

cilit

ies.

How

ever

, as

with

the

Proj

ect,

the

appl

ican

ts of

the

rel

ated

pro

ject

s w

ould

be

requ

ired

to p

ay D

IFs t

hat s

uppo

rt th

e To

wn’

s par

k an

d re

crea

tion

fund

; pay

men

t of

the

se f

ees

wou

ld f

ully

miti

gate

any

impa

ct t

hat

the

rela

ted

proj

ects

wou

ld

have

on

park

and

rec

reat

iona

l se

rvic

es.

As

state

d pr

evio

usly

, th

e Pr

ojec

t’s

impa

cts

to p

ark

serv

ices

wou

ld b

e le

ss th

an s

igni

fican

t. T

here

fore

, cum

ulat

ive

impa

cts

to p

ark

serv

ices

wou

ld b

e le

ss t

han

signi

fican

t an

d no

miti

gatio

n m

easu

res a

re re

quire

d.

TRA

NSP

OR

TATI

ON

/TR

AFF

IC (T

RA

NS)

Impa

ct T

RAN

S-1

Exi

sting

Plu

s Pro

ject

Inte

rsec

tion

LOS

The

Proj

ect t

rips w

ere

distr

ibut

ed to

the

surro

undi

ng c

ircul

atio

n sy

stem

bas

ed o

n th

e lo

catio

n of

act

ivity

cen

ters

in th

e To

wn

and

the

loca

tion

of th

e Pr

ojec

t in

rela

tion

to t

he T

own'

s re

crea

tiona

l an

d co

mm

erci

al a

reas

. A

ppro

xim

atel

y 15

pe

rcen

t of P

roje

ct tr

affic

is d

estin

ed w

est t

o th

e Li

ttle

Eagl

e Sk

i Are

a an

d Ea

gle

Lodg

e vi

a M

erid

ian;

30

perc

ent n

orth

to T

he V

illag

e, C

anyo

n Lo

dge

and

Mai

n Lo

dge

via

Min

aret

Roa

d; 2

5 pe

rcen

t to

the

Dow

ntow

n ar

eas

via

Old

Mam

mot

h Ro

ad a

nd M

erid

ian

Boul

evar

d; 1

0 pe

rcen

t eas

t via

Mai

n St

reet

and

Mer

idia

n Bo

ulev

ard;

15

perc

ent

to M

ain

Stre

et a

ttrac

tions

via

Min

aret

Roa

d an

d O

ld

Mam

mot

h Ro

ad; a

nd 5

per

cent

eas

t via

Old

Mam

mot

h Ro

ad.

All

of th

e stu

dy

area

inte

rsec

tions

are

for

ecas

t to

oper

ate

at a

sat

isfac

tory

LO

S in

the

exist

ing

plus

Pro

ject

con

ditio

n. W

ith e

xisti

ng c

ondi

tions

, Pro

ject

-gen

erat

ed im

pact

s on

in

ters

ectio

n LO

S w

ould

be

less

than

sig

nific

ant a

nd n

o m

itiga

tion

mea

sure

s ar

e re

quire

d.

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-61

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

Impa

ct T

RAN

S-2

Cum

ulat

ive

Plus

Pro

ject

Inte

rsec

tion

LOS

Miti

gatio

n M

easu

re T

RAN

S-2

Cum

ulat

ive

Plus

Pro

ject

Inte

rsec

tion

LOS

The

Min

aret

Ro

ad/M

ain

Stre

et

inte

rsec

tion,

on

e of

th

e fiv

e stu

dy

area

in

ters

ectio

ns, i

s fo

reca

st to

ope

rate

at a

n un

satis

fact

ory

LOS

in th

e cu

mul

ativ

e pl

us p

roje

ct c

ondi

tion.

Eval

uatio

n of

int

erse

ctio

n LO

S sh

ows

that

the

add

ition

of

the

Proj

ect

traffi

c to

the

cu

mul

ativ

e tra

ffic

will

sig

nific

antly

impa

ct th

e M

inar

et R

oad/

Mai

n St

reet

inte

rsec

tion

in

the

cum

ulat

ive

plus

Pro

ject

scen

ario

, acc

ordi

ng to

the

Tow

n's c

riter

ia.

The

follo

win

g im

prov

emen

t wou

ld b

e re

quire

d fo

r the

cum

ulat

ive

plus

Pro

ject

con

ditio

n to

miti

gate

the

inte

rsec

tion

to L

OS

D o

r bet

ter:

• M

inar

et R

oad/

Mai

n St

reet

. Pro

vide

eas

tbou

nd r

ight

-turn

ove

rlap

signa

l pha

sing

cons

isten

t with

Gen

eral

Pla

n re

com

men

datio

ns.

All

costs

for t

he im

plem

enta

tion

of t

his

impr

ovem

ent

shou

ld b

e el

igib

le f

or a

cre

dit

to D

evel

oper

Im

pact

Fee

s (D

IF).

Thi

s m

itiga

tion

wou

ld b

e im

plem

ente

d as

par

t of

a t

raffi

c m

itiga

tion

prog

ram

tha

t w

ould

be

fund

ed b

y th

e D

IF.

Impl

emen

tatio

n of

thi

s m

itiga

tion

mea

sure

wou

ld re

duce

this

impa

ct to

a le

ss-th

an-s

igni

fican

t lev

el.

Less

Tha

n Si

gnifi

cant

Impa

ct T

RAN

S -3

Int

erna

l Circ

ulat

ion

and

Acce

ss

Acc

ess

to th

e Pr

ojec

t fac

ilitie

s an

d lo

dgin

g w

ould

be

from

an

inte

rnal

road

way

sy

stem

. T

he n

umbe

r of

int

erna

l in

ters

ectio

ns a

t th

e Pr

ojec

t sit

e w

ould

be

limite

d. N

ew in

tern

al a

cces

s roa

ds w

ould

be

crea

ted

thro

ugho

ut th

e Pr

ojec

t site

. A

ll in

tern

al c

ircul

atio

n w

ould

inte

rface

at v

ario

us p

oint

s w

ith li

nks

to e

xter

nal

trails

acc

essin

g pu

blic

land

s to

the

sout

h (S

herw

in R

ange

) or t

he e

aste

rn fo

rest

serv

ice

land

s. I

nter

nal

road

way

s w

ould

be

priv

atel

y ow

ned

and

mai

ntai

ned.

Th

e in

tern

al ro

adw

ay s

yste

m w

ould

pro

vide

acc

ess

to v

ario

us re

siden

tial a

reas

an

d co

mm

erci

al la

nd u

ses

thro

ugho

ut th

e Pr

ojec

t site

. Tr

ails

and/

or e

mer

genc

y ac

cess

roa

dway

s w

ould

allo

w s

econ

dary

poi

nts

of a

cces

s fro

m in

tern

al s

treet

s an

d ro

adw

ays.

All

side

inte

rsec

ting

stree

ts to

the

mai

n sp

ine

road

sho

uld

be

stop-

cont

rolle

d, a

nd a

n al

l-way

stop

wou

ld b

e pr

ovid

ed a

t the

inte

rsec

tion

of th

e sp

ine

road

and

the

road

lead

ing

to S

now

cree

k V

. Si

ngle

-lane

roun

dabo

uts

may

al

so b

e su

bstit

uted

for

the

sto

p-co

ntro

lled

and

all-w

ay s

top

inte

rsec

tions

. Ro

adw

ay d

esig

ns w

ould

fit t

he la

nd a

nd b

e se

nsiti

ve to

topo

grap

hy, v

eget

atio

n

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-62

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

and

view

s. S

afe

cros

sings

for

ped

estri

ans

wou

ld b

e in

clud

ed a

nd c

ross

wal

ks

wou

ld b

e pr

ovid

ed to

cro

ss O

ld M

amm

oth

Road

at t

he M

inar

et R

oad

roun

d-ab

out.

The

refo

re, i

mpa

cts

to in

tern

al c

ircul

atio

n an

d ac

cess

wou

ld b

e le

ss th

an

signi

fican

t and

no

miti

gatio

n m

easu

res a

re re

quire

d.

Impa

ct T

RAN

S-4

Par

king

The

Proj

ect w

ould

pro

vide

und

erstr

uctu

re p

arki

ng fa

cilit

ies

for t

he m

ajor

ity o

f th

e de

velo

pmen

t. S

urfa

ce p

arki

ng f

or c

heck

in, t

our

bus,

and

deliv

ery/

serv

ice

vehi

cles

wou

ld a

lso b

e pr

ovid

ed.

Par

king

stru

ctur

es w

ould

be

desig

ned

to

prov

ide

adeq

uate

wid

th a

nd h

eigh

t to

acc

omm

odat

e m

ost

priv

ate

vehi

cles

. Sh

ort-t

erm

su

rface

pa

rkin

g w

ould

be

pr

ovid

ed

adja

cent

to

th

e ch

eck-

in

loca

tions

, with

gue

sts d

irect

ed to

und

ergr

ound

par

king

stru

ctur

es lo

cate

d un

der

the

maj

or re

siden

tial b

uild

ings

. Sh

ort-t

erm

par

king

use

s inc

lude

pas

seng

er d

rop

off

and

load

ing,

ser

vice

, de

liver

ies,

trans

it ve

hicl

es,

and

gues

t pa

rkin

g fo

r re

siden

tial

uses

. S

ome

build

ings

may

sha

re c

heck

-in a

nd p

arki

ng a

cces

s.

Affo

rdab

le re

siden

tial u

nits

wou

ld b

e al

low

ed s

urfa

ce p

arki

ng fo

r bot

h re

siden

t an

d gu

est u

se.

Park

ing

for t

he g

olf c

ours

e w

ould

be

prov

ided

thro

ugh

the

Hot

el

park

ing.

Su

rface

par

king

wou

ld a

lso b

e pr

ovid

ed a

t the

Out

fitte

rs’

Cabi

n an

d th

e St

ore

and

Inte

rpre

tive

Cent

er.

Ther

e ar

e no

pla

ns to

pro

vide

any

per

man

ent

day

skie

r par

king

with

in th

e Pr

ojec

t site

.

The

proj

ect w

ill b

e re

quire

d to

pro

vide

ade

quat

e pa

rkin

g as

par

t of t

he a

ppro

val

proc

ess.

The

refo

re th

e pr

ojec

t wou

ld n

ot re

sult

in in

adeq

uate

par

king

cap

acity

an

d im

pact

s w

ould

be

less

tha

n sig

nific

ant

and

no m

itiga

tion

mea

sure

s ar

e re

quire

d.

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-63

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

Impa

ct T

RAN

S-5

Bic

ycle

and

Ped

estri

an F

acili

ties

The

Tow

n Tr

ail

Syste

m M

aste

r Pl

an p

ropo

ses

the

exte

nsio

n of

fac

ilitie

s to

pr

omot

e su

ch n

on-m

otor

ized

alte

rnat

ive

form

s of

tra

nspo

rtatio

n as

wal

king

, bi

cycl

ing,

and

cro

ss-c

ount

ry s

kiin

g.

All

aspe

cts

of t

he P

roje

ct w

ould

be

conn

ecte

d w

ith a

serie

s of p

aths

and

wal

kway

s to

acco

mm

odat

e pe

destr

ians

and

bi

cycl

e us

e. L

inks

wou

ld o

ccur

at v

ario

us p

oint

s to

Old

Mam

mot

h Ro

ad a

nd it

s w

alki

ng a

nd b

icyc

le p

aths

. Th

e pe

destr

ian

and

bicy

cle

syste

m w

ould

incl

ude

inte

rior t

rails

and

sid

ewal

ks fr

ontin

g in

tern

al s

treet

s as

wel

l as

conn

ectin

g tra

ils

from

recr

eatio

nal a

men

ities

, out

door

spa

ces a

nd re

siden

tial a

reas

. W

alkw

ays t

o an

d fro

m r

esid

entia

l are

as, a

s w

ell a

s tra

il co

nnec

tions

that

wou

ld ti

e in

to th

e la

rger

Tow

n w

ide

recr

eatio

nal

trail

netw

ork

whi

ch i

nclu

des

pede

stria

n tra

ils,

bike

lan

es a

nd s

idew

alks

tha

t ar

e ad

jace

nt t

o m

ajor

roa

dway

s su

ch a

s O

ld

Mam

mot

h Ro

ad,

Min

aret

Roa

d, S

herw

in C

reek

Roa

d, a

nd F

airw

ay D

rive.

W

hen

poss

ible

, th

e m

ajor

int

erna

l pe

destr

ian

corri

dors

wou

ld b

e lo

cate

d ad

jace

nt to

land

scap

e fe

atur

es.

All

Proj

ect b

icyc

le a

nd p

edes

trian

fac

ilitie

s w

ould

ulti

mat

ely

conn

ect w

ith th

e To

wn’

s tra

il sy

stem

; the

reby

pro

vidi

ng th

e Pr

ojec

t with

a c

onne

ctio

n to

Tow

n-w

ide

faci

litie

s. T

here

fore

, im

pact

s w

ould

be

less

tha

n sig

nific

ant

and

no

miti

gatio

n m

easu

res a

re re

quire

d.

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Impa

ct T

RAN

S-6

Tra

nsit

The

Proj

ect w

ould

incl

ude

conn

ectio

ns to

the

Mam

mot

h La

kes T

rans

it Re

d Li

ne

and

a sh

uttle

ser

vice

. T

he P

roje

ct w

ould

inc

lude

thr

ee s

peci

fic t

rans

it im

prov

emen

ts to

and

from

the

site.

The

se im

prov

emen

ts in

clud

e:

• A

revi

sion

to th

e Re

d Li

ne b

us ro

ute

that

incl

udes

a s

top

at th

e H

otel

en

tranc

e on

the

Proj

ect s

ite a

nd a

retu

rn to

the

orig

inal

bus

rout

e;

• Ex

clus

ive

shut

tle s

ervi

ce f

or h

otel

gue

sts t

o Ea

gle

Lodg

e an

d th

e V

illag

e/G

ondo

la a

rea;

and

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-64

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

• A

dditi

onal

(th

ree

to f

our)

shut

tle v

ans

prov

ided

by

the

Snow

cree

k V

III m

aste

r hom

eow

ners

ass

ocia

tion

for u

se b

y al

l res

iden

ts fo

r trip

s to

maj

or v

isito

r sto

ps in

clud

ing

Eagl

e Lo

dge,

the

Vill

age,

and

Mai

n St

reet

and

Old

Mam

mot

h Ro

ad c

omm

erci

al a

reas

.

Bus/s

huttl

e sh

elte

rs w

ould

be

prov

ided

at t

rans

it sto

ps.

Thes

e sh

elte

rs w

ould

be

sited

to fa

cilit

ate

the

safe

ty, u

se a

nd c

omfo

rt of

pas

seng

ers

usin

g tra

nsit

with

in

the

Proj

ect

area

and

wou

ld b

e ac

cess

ible

via

the

loc

al p

edes

trian

tra

il an

d w

alkw

ay n

etw

ork.

The

se im

prov

emen

ts w

ould

ben

efit

resid

ents

of th

e Pr

ojec

t ar

ea b

y pr

ovid

ing

on-s

ite s

ervi

ce a

nd c

onne

ctio

ns t

o th

e gr

eate

r M

amm

oth

Lake

s tra

nsit

syste

m, t

here

by p

oten

tially

incr

easin

g th

e us

e of

tran

sit w

ithin

the

Proj

ect a

rea

and

redu

cing

veh

icle

use

. H

owev

er, i

t is

not a

ntic

ipat

ed th

at a

ny

incr

ease

s in

tran

sit u

se w

ould

resu

lt in

dem

and

for t

he M

amm

oth

Lake

s Tr

ansit

Re

d Li

ne th

at c

anno

t be

acco

mm

odat

ed.

Ther

efor

e, im

pact

s to

trans

it w

ould

be

less

than

sign

ifica

nt a

nd n

o m

itiga

tion

mea

sure

s are

requ

ired.

Impa

ct T

RAN

S-7

Haz

ards

New

inte

rnal

acc

ess r

oads

wou

ld b

e cr

eate

d th

roug

hout

the

Proj

ect s

ite.

Acc

ess

to th

e Pr

ojec

t fac

ilitie

s an

d lo

dgin

g w

ould

be

from

an

inte

rnal

road

way

sys

tem

an

d th

e nu

mbe

r of

int

erna

l in

ters

ectio

ns a

t th

e Pr

ojec

t sit

e w

ould

be

limite

d.

Trai

ls an

d/or

em

erge

ncy

acce

ss r

oadw

ays

wou

ld a

llow

sec

onda

ry p

oint

s of

ac

cess

fro

m in

tern

al s

treet

s an

d ro

adw

ays.

All

side

inte

rsec

ting

stree

ts to

the

mai

n sp

ine

road

wou

ld b

e sto

p-co

ntro

lled,

and

an

all-w

ay s

top

wou

ld b

e pr

ovid

ed a

t the

inte

rsec

tion

of th

e sp

ine

road

and

the

road

lead

ing

to S

now

cree

k V

. Ro

adw

ay d

esig

ns w

ould

fit t

he la

nd a

nd a

llow

for v

iew

s of o

ncom

ing

traffi

c.

Safe

cro

ssin

gs f

or p

edes

trian

s w

ould

be

incl

uded

and

cro

ssw

alks

wou

ld b

e pr

ovid

ed to

cro

ss O

ld M

amm

oth

Road

at t

he M

inar

et R

oad

roun

d-ab

out.

Fire

lane

s, tu

rnin

g ra

dii a

nd b

ack

up s

pace

aro

und

build

ings

wou

ld b

e de

signe

d in

coo

pera

tion

with

loca

l offi

cial

s so

as

to b

e ad

equa

te fo

r em

erge

ncy

and

fire

equi

pmen

t veh

icle

s. N

o ag

ricul

tura

l lan

d us

es a

re lo

cate

d in

pro

xim

ity to

the

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-65

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

Proj

ect s

ite.

Ther

efor

e, th

e Pr

ojec

t wou

ld n

ot re

sult

in tr

affic

haz

ards

ass

ocia

ted

with

inc

ompa

tible

use

s, su

ch a

s fa

rm e

quip

men

t. T

he P

roje

ct w

ould

not

su

bsta

ntia

lly in

crea

se h

azar

ds d

ue to

a d

esig

n fe

atur

e or

inco

mpa

tible

use

s an

d im

pact

s wou

ld b

e le

ss th

an si

gnifi

cant

and

no

miti

gatio

n m

easu

res a

re re

quire

d.

Impa

ct T

RAN

S-8

Em

erge

ncy

Acce

ss

Emer

genc

y ve

hicl

es w

ould

circ

ulat

e th

roug

h th

e Pr

ojec

t are

a us

ing

the

inte

rnal

ro

adw

ay s

yste

m.

In a

dditi

on, s

uppl

emen

tal f

ire la

nes

wou

ld b

e de

velo

ped

in

conj

unct

ion

with

the

road

way

sys

tem

to p

rovi

de lo

oped

sec

onda

ry e

mer

genc

y ve

hicl

e ac

cess

and

egr

ess.

Fire

lane

s, tu

rnin

g ra

dii a

nd b

ack

up s

pace

aro

und

build

ings

wou

ld b

e de

signe

d in

coo

pera

tion

with

loc

al o

ffici

als

so a

s to

be

adeq

uate

for

em

erge

ncy

and

fire

equi

pmen

t ve

hicl

es.

Pav

emen

ts w

ould

be

desig

ned

to s

uppo

rt lo

ads

crea

ted

by e

mer

genc

y ve

hicl

e tra

ffic.

Sta

ndpi

pe a

nd

fire

supp

ress

ion

syste

ms

conn

ectio

ns w

ould

be

inco

rpor

ated

into

arc

hite

ctur

al

and

land

scap

ing

desig

n el

emen

ts w

here

pra

ctic

al a

nd in

loca

tion

acce

ssib

le to

fir

e eq

uipm

ent.

The

Proj

ect w

ould

incl

ude

a se

cond

ary

Proj

ect a

cces

s at t

he in

ters

ectio

n w

est o

f M

inar

et R

oad/

Old

Mam

mot

h Ro

ad, w

hich

wou

ld p

rovi

de a

dditi

onal

acc

ess

to

the

site

for

resid

ents

or e

mer

genc

y ve

hicl

es.

Ther

efor

e, th

e Pr

ojec

t wou

ld n

ot

resu

lt in

ina

dequ

ate

emer

genc

y ac

cess

and

im

pact

s w

ould

be

les

s th

an

signi

fican

t and

no

miti

gatio

n m

easu

res a

re re

quire

d.

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Impa

ct T

RAN

S-9

Pol

icy

Cons

isten

cy

As

note

d, t

he P

roje

ct w

ill p

rovi

de f

or p

edes

trian

and

bic

ycle

fac

ilitie

s, an

d w

ould

pro

vide

for

bus

/shut

tle s

helte

rs s

ited

to f

acili

tate

the

saf

ety,

use

and

co

mfo

rt of

pas

seng

ers

usin

g tra

nsit

with

in t

he P

roje

ct a

rea.

Th

eref

ore

the

Proj

ect w

ould

not

con

flict

with

ado

pted

pol

icie

s, pl

ans,

or p

rogr

ams

supp

ortin

g al

tern

ativ

e tra

nspo

rtatio

n an

d im

pact

s w

ould

be

less

tha

n sig

nific

ant

and

no

miti

gatio

n m

easu

res a

re re

quire

d.

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-66

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

Impa

ct T

RAN

S-10

Con

struc

tion

Dur

ing

cons

truct

ion,

m

ore

vehi

cle

trips

w

ould

be

ge

nera

ted

durin

g th

e gr

adin

g/ex

cava

tion

phas

e th

an d

urin

g ot

her

porti

ons

of P

roje

ct c

onstr

uctio

n ac

tivity

. O

ther

con

struc

tion

phas

es (

e.g.

, hau

ling

of e

quip

men

t and

mat

eria

ls)

wou

ld g

ener

ate

com

para

tivel

y fe

wer

trip

s; th

us, i

mpa

cts a

ssoc

iate

d w

ith g

radi

ng

phas

e tra

ffic

wou

ld b

e co

nsid

ered

the

wor

st-ca

se s

ituat

ion

durin

g Pr

ojec

t co

nstru

ctio

n. G

radi

ng o

pera

tion

may

invo

lve

up to

10

haul

ers

cond

uctin

g 18

0 lo

ads

per

day

(180

trip

s in

and

180

trip

s ou

t). T

hese

trip

s w

ould

occ

ur o

n no

-sn

ow c

ondi

tions

wee

kday

s, M

onda

y th

roug

h Fr

iday

. Th

e gr

adin

g op

erat

ion

of

18 tr

ips i

n an

d 18

trip

s out

dur

ing

the

wee

kday

pea

k ho

ur w

ould

hav

e no

impa

ct

on th

e tra

ffic

impa

ct a

naly

sis’s

typi

cal w

inte

r Sa

turd

ay. T

his

volu

me

of tr

uck

trips

wou

ld b

e eq

uiva

lent

to

trips

gen

erat

ed b

y ap

prox

imat

ely

150

resid

entia

l un

its u

sing

a pa

ssen

ger-c

ar e

quiv

alen

t of

tw

o.

Ther

efor

e, t

he P

roje

ct’s

co

nstru

ctio

n im

pact

s w

ould

be

less

than

sig

nific

ant a

nd n

o m

itiga

tion

mea

sure

s ar

e re

quire

d.

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Impa

ct T

RAN

S -1

1 C

umul

ativ

e Im

pact

s

The

long

-rang

e To

wn

Gen

eral

Pla

n bu

ild o

ut s

cena

rio f

rom

the

Eagl

e Lo

dge

Traf

fic I

mpa

ct A

naly

sis (

LSC

Con

sulta

nts,

Inc.

, Aug

ust

2006

) fo

r 20

24 p

lus

Proj

ect t

raffi

c pr

ojec

tions

and

miti

gatio

n m

easu

res f

rom

the

Tow

n G

ener

al P

lan

Upd

ate

DEI

R Tr

affic

Ana

lysis

(LS

C Co

nsul

tant

s, In

c., N

ovem

ber

2004

) w

ere

used

to e

valu

ate

long

-rang

e im

pact

s. T

he P

roje

ct w

ould

repr

esen

t a re

duct

ion

in

size

by a

ppro

xim

atel

y 20

0 un

its f

rom

that

ass

umed

in th

e To

wn

Gen

eral

Pla

n U

pdat

e D

EIR

Traf

fic A

naly

sis fo

r the

Pro

ject

site

. Th

eref

ore,

LO

S co

nditi

ons

will

be

impr

oved

fro

m t

hose

rep

orte

d in

the

Gen

eral

Pla

n an

alys

is an

d th

e Pr

ojec

t wou

ld n

ot c

ontri

bute

to a

sign

ifica

nt a

dver

se c

umul

ativ

e im

pact

.

All

study

inte

rsec

tions

wou

ld c

ontin

ue to

ope

rate

at s

atisf

acto

ry L

OS

(LO

S D

or

bette

r) un

der

long

-rang

e co

nditi

ons.

Thu

s, cu

mul

ativ

e im

pact

s w

ould

be

less

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-67

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

than

sig

nific

ant

and

no m

itiga

tion

mea

sure

s ar

e re

quire

d fo

r th

e lo

ng-ra

nge

Tow

n bu

ild-o

ut c

ondi

tions

.

UTI

LITI

ES &

SER

VIC

E SY

STEM

S (U

TIL)

Impa

ct U

TIL-

1 W

aste

wate

r Gen

erat

ion

Was

tew

ater

fro

m

the

Proj

ect

site

wou

ld

be

conv

eyed

vi

a w

aste

wat

er

infra

struc

ture

to

the

Was

tew

ater

Tre

atm

ent

Plan

t (W

WTP

). C

urre

ntly

, th

e W

WTP

trea

ts an

ave

rage

dai

ly fl

ow o

f 1.6

mill

ion

gallo

ns p

er d

ay (m

gd),

a pe

ak

daily

flow

of 2

.6 m

gd, a

nd h

as c

apac

ity to

trea

t 4.9

mgd

. Th

is tra

nsla

tes

into

a

rem

aini

ng c

apac

ity o

f 2.

3 m

gd o

f w

aste

wat

er a

t av

erag

e da

ily f

low

s an

d 3.

2 m

gd o

f w

aste

wat

er a

t pea

k da

ily f

low

s th

at c

an b

e tre

ated

at t

he W

WTP

. The

Pr

ojec

t wou

ld re

pres

ent a

ppro

xim

atel

y 4

perc

ent o

f the

pea

k da

ily fl

ow c

apac

ity

of th

e W

WTP

trea

tmen

t for

pea

k da

ily f

low

s up

to 4

.9 m

gd.

Thu

s, Pr

ojec

t im

pact

s re

late

d to

was

tew

ater

trea

tmen

t cap

acity

wou

ld b

e le

ss th

an s

igni

fican

t an

d no

miti

gatio

n m

easu

res a

re re

quire

d.

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Impa

ct U

TIL-

2 W

aste

wate

r Inf

rastr

uctu

re

The

appl

ican

t wou

ld b

e re

spon

sible

for a

ll co

sts a

ssoc

iate

d w

ith th

e in

stalla

tion

of w

aste

wat

er in

frastr

uctu

re o

n th

e Pr

ojec

t site

and

the

conn

ectio

n fe

es p

aid

to

Mam

mot

h Co

mm

unity

Wat

er D

istric

t (M

CW

D)

for

the

Proj

ect w

ould

hel

p to

pa

y fo

r th

e ne

cess

ary

upgr

ades

to

the

MC

WD

’s s

ewer

col

lect

ion

pipe

lines

de

scrib

ed a

bove

. I

n co

nsid

erat

ion

of t

he a

bove

, Pr

ojec

t im

pact

s re

late

d to

w

aste

wat

er i

nfra

struc

ture

wou

ld b

e le

ss t

han

signi

fican

t an

d no

miti

gatio

n m

easu

res a

re re

quire

d.

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Impa

ct U

TIL-

3 W

aste

wate

r Gen

erat

ion

(Cum

ulat

ive)

The

pote

ntia

l nee

d fo

r the

rela

ted

proj

ects

to re

quire

upg

rade

s to

the

WW

TP to

ac

com

mod

ate

was

tew

ater

gen

erat

ed b

y th

ese

proj

ects

is sit

e-sp

ecifi

c, a

nd th

ere

is lit

tle, i

f any

, cum

ulat

ive

rela

tions

hip

betw

een

the

deve

lopm

ent o

f the

Pro

ject

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-68

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

and

the

rela

ted

proj

ects.

In

add

ition

, man

y of

the

rel

ated

pro

ject

s co

nsist

of

rede

velo

pmen

t th

at w

ould

res

ult

in t

he e

limin

atio

n of

exi

sting

was

tew

ater

ge

nera

tion

patte

rns

at th

ese

sites

. Th

e M

CW

D h

as a

rem

aini

ng c

apac

ity o

f 2.3

m

gd o

f w

aste

wat

er a

t ave

rage

dai

ly f

low

s an

d 3.

2 m

gd o

f w

aste

wat

er a

t pea

k da

ily f

low

s th

at c

an b

e tre

ated

at t

he W

WTP

; thu

s cu

mul

ativ

e im

pact

s to

the

rem

aini

ng c

apac

ity o

f th

e W

WTP

wou

ld b

e le

ss t

han

signi

fican

t an

d no

m

itiga

tion

mea

sure

s are

requ

ired.

Impa

ct U

TIL-

4 W

aste

wate

r Inf

rastr

uctu

re (C

umul

ativ

e)

MCW

D h

as i

dent

ified

def

icie

ncie

s in

the

col

lect

ion

syste

m t

hat

wou

ld b

e ex

acer

bate

d by

the

Proj

ect a

nd th

e re

late

d pr

ojec

ts. T

he p

oten

tial n

eed

for t

he

rela

ted

proj

ects

to

requ

ire

upgr

aded

w

aste

wat

er

lines

to

ac

com

mod

ate

was

tew

ater

gen

erat

ed b

y th

ese

proj

ects

is sit

e-sp

ecifi

c, a

nd th

ere

is lit

tle, i

f any

, cu

mul

ativ

e re

latio

nshi

p be

twee

n th

e de

velo

pmen

t of t

he P

roje

ct a

nd th

e re

late

d pr

ojec

ts.

In a

dditi

on, t

he c

onne

ctio

n fe

es p

aid

by in

divi

dual

app

lican

ts w

ould

he

lp t

o pa

y fo

r th

e ne

cess

ary

upgr

ades

to

the

sew

er c

olle

ctio

n pi

pelin

es

desc

ribed

abo

ve.

In c

onsid

erat

ion

of th

e ab

ove,

cum

ulat

ive

impa

cts

rela

ted

to

was

tew

ater

inf

rastr

uctu

re w

ould

be

less

tha

n sig

nific

ant

and

no m

itiga

tion

mea

sure

s are

requ

ired.

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Impa

ct U

TIL-

5 W

ater

Sup

ply

Miti

gatio

n M

easu

res U

TIL-

5a th

roug

h 5f

The

Proj

ect’s

esti

mat

ed a

vera

ge w

ater

dem

and

is ap

prox

imat

ely

204,

152

gallo

ns p

er d

ay (g

pd) (

229

acre

feet

per

yea

r [af

y]) a

nd th

e pe

ak w

ater

dem

and

is 31

6,13

3 gp

d (3

54 a

fy).

Acc

ordi

ng to

the

exist

ing

wat

er s

uppl

y av

aila

ble

to

the

MC

WD

ther

e is

suffi

cien

t wat

er s

uppl

y at

ave

rage

and

pea

k tim

es in

bot

h no

rmal

and

mul

tiple

dry

yea

rs f

or th

e Pr

ojec

t. T

hus,

Proj

ect i

mpa

cts

to w

ater

us

e w

ithin

the

Tow

n w

ould

be

cons

ider

ed le

ss th

an si

gnifi

cant

and

no

miti

gatio

n m

easu

res

are

requ

ired.

H

owev

er,

the

follo

win

g m

itiga

tion

mea

sure

s ar

e re

com

men

ded.

Miti

gatio

n M

easu

re U

TIL

-5a

Wat

er S

uppl

y

The

appl

ican

t sho

uld

ensu

re th

at th

e la

ndsc

ape

irrig

atio

n sy

stem

be

desig

ned,

insta

lled

and

teste

d to

pro

vide

uni

form

irrig

atio

n co

vera

ge.

Sprin

kler

hea

d pa

ttern

s sha

ll be

adj

uste

d to

m

inim

ize

over

spra

y on

to w

alkw

ays a

nd st

reet

s.

Miti

gatio

n M

easu

re U

TIL

-5b

Wat

er S

uppl

y

The

appl

ican

t sho

uld

insta

ll ei

ther

a “

smar

t spr

inkl

er”

syste

m to

pro

vide

irrig

atio

n fo

r the

la

ndsc

aped

are

as o

r, at

a m

inim

um, s

et a

utom

atic

irrig

atio

n tim

ers

to w

ater

land

scap

ing

durin

g ea

rly m

orni

ng o

r la

te e

veni

ng h

ours

to

redu

ce w

ater

los

ses

from

eva

pora

tion.

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-69

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

Irrig

atio

n ru

n tim

es f

or a

ll zo

nes

shal

l be

adju

sted

seas

onal

ly, r

educ

ing

wat

er ti

mes

and

fre

quen

cy in

the

cool

er m

onth

s (fa

ll, w

inte

r, sp

ring)

. Sp

rinkl

er ti

mer

run

tim

es s

hall

be

adju

sted

to a

void

wat

er ru

noff,

esp

ecia

lly w

hen

irrig

atin

g slo

ped

prop

erty

.

Miti

gatio

n M

easu

re U

TIL

-5c

Wat

er S

uppl

y

The

appl

ican

t sho

uld

sele

ct a

nd u

se d

roug

ht-to

lera

nt, l

ow-w

ater

con

sum

ing

plan

t var

ietie

s to

redu

ce ir

rigat

ion

wat

er c

onsu

mpt

ion.

Miti

gatio

n M

easu

re U

TIL

-5d

Wat

er S

uppl

y

The

appl

ican

t sho

uld

insta

ll lo

w fl

ush

wat

er to

ilets

and

urin

als

and

shal

l lim

it th

e nu

mbe

r of

sho

wer

head

s to

one

hig

h ef

ficie

ncy

fixtu

re p

er s

tall,

in n

ew c

onstr

uctio

n.

Low

-flow

fa

ucet

aer

ator

s sho

uld

be in

stalle

d on

all

sink

fauc

ets.

Miti

gatio

n M

easu

re U

TIL

-5e

Wat

er S

uppl

y

The

appl

ican

t sha

ll be

sub

ject

to th

e pr

ovisi

ons

of a

recy

cled

wat

er o

rdin

ance

ado

pted

by

the

Tow

n pu

rsua

nt t

o A

rticl

e 10

.9,

begi

nnin

g w

ith S

ectio

n 65

601

of t

he G

over

nmen

t Co

de, a

nd ti

tled

Wat

er R

ecyc

ling

in L

ands

capi

ng A

ct (A

ct) a

t suc

h tim

e as

the

Tow

n is

no

tifie

d by

the

Mam

mot

h Co

mm

unity

Wat

er D

istric

t of t

he fu

ture

ava

ilabi

lity

of re

cycl

ed

wat

er,

at c

osts

reas

onab

ly c

ompe

titiv

e w

ith t

he c

osts

of u

ntre

ated

gro

undw

ater

. I

n ad

ditio

n, t

he S

now

cree

k M

aste

r Pl

an s

hall

incl

ude

a pr

ovisi

on t

hat,

for

all

proj

ects

cons

truct

ed o

r app

rove

d pr

ior t

o th

e no

tice,

the

appl

ican

t sha

ll us

e th

eir b

est e

fforts

to u

se

recy

cled

wat

er c

onsis

tent

with

the

Tow

n, th

e A

ct, a

nd w

ater

dist

rict p

olic

y.

Impa

ct U

TIL-

6 W

ater

Infr

astru

ctur

e:

The

Proj

ect i

nclu

des i

nsta

llatio

n of

wat

er in

frastr

uctu

re w

ithin

the

Proj

ect s

ite to

co

nvey

wat

er f

rom

the

exist

ing

MC

WD

wat

er li

nes

to u

sage

poi

nts

with

in th

e Pr

ojec

t.

How

ever

, de

sign

plan

s fo

r th

is in

tern

al

Proj

ect

wat

er

supp

ly

distr

ibut

ion

syste

m a

re n

ot c

ompl

ete

at th

is tim

e. A

ccor

ding

to M

CWD

, are

as

of p

oten

tial d

efic

ienc

y ha

ve b

een

iden

tifie

d in

wat

er li

nes

in th

e Pr

ojec

t ar

ea

depe

ndin

g on

whe

re th

e Pr

ojec

t wou

ld c

onne

ct w

ith e

xisti

ng w

ater

line

s. T

he

appl

ican

t wou

ld b

e re

spon

sible

for

all

costs

ass

ocia

ted

with

the

insta

llatio

n of

No

miti

gatio

n m

easu

res a

re re

quire

d.

Less

Tha

n Si

gnifi

cant

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-70

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

wat

er in

frastr

uctu

re o

n th

e Pr

ojec

t site

and

the

conn

ectio

n fe

es p

aid

to M

CW

D

for

the

Proj

ect w

ould

hel

p to

pay

for

the

nece

ssar

y up

grad

es to

the

MCW

D’s

w

ater

pip

elin

es d

escr

ibed

abo

ve.

In c

onsid

erat

ion

of th

e ab

ove,

Pro

ject

impa

cts

rela

ted

to w

aste

wat

er i

nfra

struc

ture

wou

ld b

e le

ss t

han

signi

fican

t an

d no

m

itiga

tion

mea

sure

s are

requ

ired.

Impa

ct U

TIL-

7 C

umul

ativ

e W

ater

Sup

ply

M

itiga

tion

Mea

sure

UTI

L-7

Impl

emen

tatio

n of

the

Proj

ect i

n co

mbi

natio

n w

ith th

e re

late

d pr

ojec

ts w

ould

fu

rther

inc

reas

e de

man

ds o

n w

ater

sup

ply

and

conv

eyan

ce i

nfra

struc

ture

. A

ccor

ding

to th

e To

wn,

all

of th

e re

late

d pr

ojec

ts ar

e ge

nera

lly c

onsis

tent

with

th

eir r

espe

ctiv

e la

nd u

se d

esig

natio

ns.

Ther

e w

ould

be

insu

ffici

ent s

uppl

ies

of

wat

er d

urin

g dr

y ye

ars

at T

own

build

out

with

out

the

Proj

ect.

Con

sequ

ently

, th

ere

wou

ld a

lso b

e in

suffi

cien

t wat

er f

or th

e Pr

ojec

t plu

s th

e re

late

d pr

ojec

ts

durin

g dr

y w

ater

yea

rs.

MC

WD

is w

orki

ng to

dev

elop

new

gro

undw

ater

sou

rces

, use

rec

ycle

d w

ater

, an

d im

plem

ent w

ater

restr

ictio

ns a

s a

mea

ns to

incr

ease

sup

plie

s to

reso

lve

any

pote

ntia

l wat

er su

pply

def

icie

ncie

s dur

ing

drou

ght p

erio

ds.

How

ever

, eve

n w

ith

full

impl

emen

tatio

n of

thes

e va

rious

wat

er s

uppl

y pr

ojec

ts, it

is e

xpec

ted

that

in

suffi

cien

t wat

er w

ould

be

avai

labl

e to

mee

t pro

ject

ed d

eman

d du

ring

a sin

gle

dry

year

. Th

eref

ore,

bec

ause

thes

e fu

ture

wat

er s

ourc

es d

o no

t exi

st at

pre

sent

th

e Pr

ojec

t’s c

ontri

butio

n to

ove

rall

wat

er s

uppl

y de

man

d w

ithin

the

Tow

n w

ould

be

cum

ulat

ivel

y co

nsid

erab

le,

and

cum

ulat

ive

wat

er s

uppl

y im

pact

s w

ould

be

signi

fican

t. I

mpl

emen

tatio

n of

the

fol

low

ing

miti

gatio

n m

easu

re

wou

ld h

elp

to re

duce

the

signi

fican

t cum

ulat

ive

wat

er s

uppl

y im

pact

s, ho

wev

er

cum

ulat

ive

wat

er su

pply

impa

cts w

ould

rem

ain

signi

fican

t.

The

Tow

n sh

all n

ot a

ppro

ve n

ew d

evel

opm

ent a

pplic

atio

ns th

at w

ould

res

ult i

n a

wat

er

dem

and

in e

xces

s of a

vaila

ble

supp

lies a

s det

erm

ined

by

the

Mam

mot

h Co

mm

unity

Wat

er

Dist

rict.

The

Tow

n sh

all w

ork

with

Mam

mot

h Co

mm

unity

Wat

er D

istric

t to

ensu

re th

at

deve

lopm

ent

proj

ects

incl

ude

phas

ed d

eman

d in

crea

ses

so t

hat

the

deve

lopm

ent

of

nece

ssar

y ad

ditio

nal w

ater

sup

ply

sour

ces

is es

tabl

ished

prio

r to

resp

ectiv

e de

velo

pmen

t de

man

d oc

curri

ng.

Sign

ifica

nt a

nd U

navo

idab

le

Impa

ct U

TIL-

8 C

umul

ativ

e W

ater

Infr

astru

ctur

e

Mam

mot

h Co

mm

unity

Wat

er D

istric

t (M

CWD

) ha

s id

entif

ied

defic

ienc

ies

in

the

wat

er li

nes

that

ser

ve th

e Pr

ojec

t are

a th

at, d

epen

ding

on

whe

re th

e Pr

ojec

t N

o m

itiga

tion

mea

sure

s are

requ

ired.

Le

ss T

han

Sign

ifica

nt

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-71

SC

H #

200

6112

015

Tab

le I-

1

Sum

mar

y of

Env

iron

men

tal I

mpa

cts &

Miti

gatio

n M

easu

res

Envi

ronm

enta

l Im

pact

M

itiga

tion

Mea

sure

s Le

vel o

f Sig

nific

ance

af

ter

Miti

gatio

n

conn

ects

with

exi

sting

wat

er li

nes,

coul

d be

exa

cerb

ated

by

the

Proj

ect a

nd th

e re

late

d pr

ojec

ts. T

he p

ipel

ine

repl

acem

ent w

ork

is cu

rrent

ly sc

hedu

led

to o

ccur

be

twee

n 20

10 a

nd 2

013,

and

MCW

D h

as s

tate

d th

at th

e w

ork

mus

t be

don

e pr

ior

to f

ull

occu

patio

n of

the

Pro

ject

are

a.

MC

WD

has

dev

elop

ed f

utur

e de

man

d pr

ojec

tions

for t

he G

ener

al P

lan

Upd

ate

Dra

ft EI

R th

at re

sulte

d in

pla

ns

for

som

e in

frastr

uctu

re i

mpr

ovem

ents.

Th

e po

tent

ial

need

for

the

rel

ated

pr

ojec

ts to

req

uire

upg

rade

d w

ater

line

s to

acc

omm

odat

e th

eir

wat

er d

eman

ds

requ

ires

site-

spec

ific

eval

uatio

n an

d th

ere

is lit

tle,

if an

y,

cum

ulat

ive

rela

tions

hip

betw

een

the

deve

lopm

ent o

f the

Pro

ject

and

the

rela

ted

proj

ects.

In

addi

tion,

the

conn

ectio

n fe

es p

aid

by in

divi

dual

app

lican

ts w

ould

hel

p to

pay

for

the

nece

ssar

y up

grad

es to

the

wat

er li

nes

desc

ribed

abo

ve.

In c

onsid

erat

ion

of

the

abov

e, c

umul

ativ

e im

pact

s rel

ated

to w

ater

infra

struc

ture

wou

ld b

e le

ss th

an

signi

fican

t and

no

miti

gatio

n m

easu

res a

re re

quire

d.

Tow

n of

Mam

mot

h La

kes

Au

gust

200

7

Snow

cree

k VI

II, S

now

cree

k M

aste

r Pla

n U

pdat

e - 2

007

I. In

trod

uctio

n/Su

mm

ary

Dra

ft En

viro

nmen

tal I

mpa

ct R

epor

t

Page

I-72

SC

H #

200

6112

015

This

pag

e in

tent

iona

lly le

ft bl

ank.