re: butte priority soils operable unit (bpsou) final...

317 Anaconda Road

Butte MT 59701

Direct (406) 782-9964

Fax (406) 782-9980

A BP affiliated company

November 17, 2015

Nikia Greene

Remedial Project Manager

US EPA – Montana Office

Baucus Federal Building

10 West 15th Street, Suite 3200

Helena, Montana 59626

Daryl Reed

DEQ Project Officer

P.O. Box 200901

Helena, Montana 59620-0901

D. Henry Elsen, Esq.

US EPA – Montana Office

Baucus Federal Building

10 West 15th Street, Suite 3200

Helena, Montana 59626

Jonathan Morgan, Esq.

DEQ, Legal Counsel

P.O. Box 200901

Helena, Montana 59620-0901

RE: Butte Priority Soils Operable Unit (BPSOU) Final Wetland Demonstration Area Site

Reclamation Construction Completion Report (CCR)

Gentlemen:

Atlantic Richfield Company is submitting the Final Wetland Demonstration Area Site

Reclamation Construction Completion Report (CCR) and the approval letter from the Agencies

for your records.

Hard copies are being provided to the EPA and DEQ; all others will receive via email.

If you have questions or concerns, please do not hesitate to call me at (406) 723-1826.

Sincerely,

Loren Burmeister

Operations Project Manager

cc: Patricia Gallery / Atlantic Richfield - email

Lorri Birkenbuel / Atlantic Richfield - email

Cord Harris / Atlantic Richfield - email

Jean Martin / Atlantic Richfield - email

Terry Moore / Atlantic Richfield - email

Irene Montero / Atlantic Richfield - email

Ray Vose / Atlantic Richfield - email

Marci Sheehan / Atlantic Richfield - email

Tim Hilmo / Atlantic Richfield - email

Bill Duffy / DGS - email

John Davis / PRR - email

Rich Curley / AR Counsel - email

Sara Sparks / EPA - email

Nikia Greene / EPA - email

Henry Elsen / EPA - email

Joe Vranka / EPA - email

Jared Hautamaki / EPA - email

David Shanight / CDM - email

Curt Coover / CDM - email

Ken Brockman /BOR - email

James Freeman / DOJ - email

John Sither / DOJ - email

Tom Livers / DEQ - email

Jenny Chambers / DEQ - email

Thomas Stoops / DEQ - email

Daryl Reed / DEQ – email

Jonathan Morgan / DEQ - email

Lisa Dewitt / DEQ - email

Bill Kirley / DEQ - email

Mary Capdeville / NRDP - email

Jim Ford / NRDP - email

Greg Mullen / NRDP - email

Pat Cunneen / NRDP - email

Ted Duaime / MBMG - email

Gary Icopini / MBMG - email

Robert Bylsma / UP - email

John Gilmour / UP - email

Bill Jackson / UP - email

Dave Smith / BNSF – email

Mr. Yueh Chuang / BNSF - email

Gary Honeyman / UP - email

Leo Berry / BNSF - email

Robert Lowry / BNSF – email

John Ashworth / BNSF - email

Brooke Kuhl / BNSF - email

Robert Hagler / Kennedy/Jenks - email

Lauren Knickrehm / Kennedy/Jenks - email

Bob Andreoli / RARUS - email

R. Schellig / RARUS - email

Becky Summerville / Inland - email

Jon Sesso / BSB - email

Julia Crain / BSB - email

Dan Powers / BSB - email

Eric Hassler / BSB - email

Dave Schultz / BSB - email

Pat Riordan / BSB - email

Molly Maffei / BSB - email

Gordon Hart / BSB - email

Josh Vincent / WET - email

Don Booth / AR Consultant - email

Craig Deeney / TREC - email

Scott Bradshaw / TREC - email

Brad Archibald / Pioneer - email

Pat Sampson / Pioneer - email

Dave Griffis / Pioneer - email

Mike Borduin / Pioneer - email

Josh Bryson / Pioneer - email

Leesla Jonart / Pioneer - email

Montana Tech Library - hard copy

CTEC of Butte - hard copy

File: [email protected] - email

BPSOU SharePoint - upload

SILVER BOW CREEK/BUTTE AREA NPL SITE

BUTTE PRIORITY SOILS OPERABLE UNIT

Final

Wetland Demonstration Area

Construction Completion Report (CCR)

Atlantic Richfield Company

November 17, 2015

ENVIRONMENTAL PROTECTION AGENCYREGION 8, MONTANA OFFICE

FEDERAL BUILDING 10 West 15th Street Suite 3200HELENA MT 59626 0096

Phone 866-457-2690http://www.epa.gov/regiono8

Ref: 8M0

November 6, 2015

Mr. Loren BurmeisterAtlantic Richfield Company317 Anaconda RoadButte, MT 59701On behalf of Respondents

Re: Approval letter for: Butte Priority Soils Operable Unit (BPSOU) Draft Final WetlandDemonstration Area Construction Completion Report (CCR), dated October 21,2015

Dear Loren:

The U. S. Environmental Protection Agency (EPA), in consultation with the MontanaDepartment of Environmental Quality (DEQ), has no further comments and approves the abovedescribed CCR. Please submit a cover page that identifies the CCR as final.

If you have any questions or concerns, please call me at (406) 457-5019.

Sincerely,-

----

Nikia GreeneRemedial Project Manager

Jenny Chambers; DEQDaryl Reed; DEQJon Morgan; DEQ counselBill Kirley; DEQ counselTom Stoops; DEQMary Capdeville; NRD counsel

Pat Cunneen; State NRD ProgramJim Ford; State NRD ProgramMatt Vincent; BSBCJon Sesso; BSBCMollie Maffei; BSBCDavid Schultz; BSBCEric Hassler; BSBCKaren Sullivan; BSBCDan Powers; BSBCJulia Cram; BSBCGordon Hart; BSBC counselGary Honeyman; UPRobert Byisma; Counsel for UPDavid Smith; BNSFYueh Chuang; BNSFLeo Berry; BNSFBrooke Kuhi; Counsel for BNSFRob Hagler; Kennedy Jenks for BNSF and UPLauren Knickrehm: Kennedy Jenks for BNSF and UPBob Andreoli; Patroit/RARUSR. Schellig; Counsel for Patriot/RARUSBecky Summerville; Ddmllaw for Inland Properties Inc.Dawn Maack; Dmllaw for Inland Properties Inc.Robert Lowry, BNSF counselJohn Ashworth, BNSF counselCord Harris; ARCOIBPLorri Birkenbuel; ARCO/BPMarci Sheehan; ARCO/BPRich Curley; attorney for ARCO/BPAnn Baranowski; AR/BPJean Martin; Counsel ARCO/BPWilliam Duffy; attorney for ARCO/BPPat Sampson; Pioneer for AR/BPCraig Deeney; TRECMike Borduin; Pioneer for AR/BPBrad Archibald; Pioneer for ARIBPDon Booth; AR consultantTed Duaime; MBMGGary Icopini; MBMGDavid Shanight, CDM SmithCurt Coover, CDM SmithChapin Storrar, CDM SmithHenry Elsen, EPAJim Freeman, US DOJSara Sparks; EPAJoe Vranka; EPA

SILVER BOW CREEK/BUTTE AREA NPL SITE

BUTTE PRIORITY SOILS OPERABLE UNIT

Final

Wetland Demonstration Area

Construction Completion Report (CCR)

Prepared for:

Atlantic Richfield Company

317 Anaconda Road

Butte, Montana 59701

Prepared by:

Pioneer Technical Services, Inc.

P. O. Box 3445

Butte, Montana 59702

November 17, 2015

Final Wetland Demonstration Area

Construction Completion Report Rev 2 Page i of iii

TABLE OF CONTENTS

Page

INTRODUCTION .............................................................................................................. 1 Site Location and Background ................................................................................ 1 Construction Completion Report Contents ............................................................. 2

DESCRIPTION OF CONSTRUCTION ACTIVITIES...................................................... 2 Mobilization/Demobilization .................................................................................. 3 Utility Location ....................................................................................................... 3 Infrastructure Removal ........................................................................................... 3

2.3.1 Non-Isolation Areas .................................................................................... 4

2.3.2 Isolation Area .............................................................................................. 4 2.3.3 Utilities Termination ................................................................................... 4

2.3.4 Removal and Disposal of Chain-Link Fence .............................................. 5 KAW AVENUE POND CONSTRUCTION .......................................................... 5

2.4.1 Geosynthetic Clay Liner, Cover Material, and Riprap Installation ............ 5 2.4.2 Gravel Access Pad and Traffic Barriers...................................................... 6

2.4.3 Chain-Link Security Fence and Gate Installation ....................................... 6 Regrading ................................................................................................................ 6

2.5.1 Surface Leveling and Smoothing ................................................................ 6 2.5.2 Limestone Acquire and Install .................................................................... 6 2.5.3 Helehan Borrow Installation ....................................................................... 7

2.5.4 Growth Media Acquire and Install ............................................................. 7 REVEGETATION .................................................................................................. 7

PROJECT DOCUMENTATION AND SCHEDULE ........................................................ 7 Work Plan Completion Form .................................................................................. 7

Project Correspondence .......................................................................................... 8 Project Monthly Reports ......................................................................................... 8

Daily Project and Contractor Logs ......................................................................... 9 Project Meetings ..................................................................................................... 9

Project Schedule...................................................................................................... 9

CONSTRUCTION QUALITY ASSURANCE .................................................................. 9 Material Testing Results ......................................................................................... 9 Quantities of Materials .......................................................................................... 10 Project Photographs .............................................................................................. 10

Deviations ............................................................................................................. 10

SAFETY AND ENVIRONMENTAL CONSIDERATIONS .......................................... 10

Safety .................................................................................................................... 10 5.1.1 Safety Meetings ........................................................................................ 11 5.1.2 Personal Protective Equipment ................................................................. 11 5.1.3 Lost-Time Accidents ................................................................................. 11 5.1.4 Recordable Incidents ................................................................................. 11

Environmental Considerations .............................................................................. 11


Construction Completion Report Rev 2 Page ii of iii

5.2.1 Dust Control .............................................................................................. 11

5.2.2 Migratory Birds and Endangered Species................................................. 11 5.2.3 Existing Wetlands ..................................................................................... 11 5.2.4 Historical Preservation .............................................................................. 11

INSTITUTIONAL CONTROLS ...................................................................................... 12

PERFORMANCE STANDARDS/ARARS COMPLIANCE........................................... 12

REFERENCES ................................................................................................................. 13


Construction Completion Report Rev 2 Page iii of iii

LIST OF TABLES

Table 1 Project Schedule

Table 2 Quantities of Materials

LIST OF APPENDICES

Appendix A Wetland Demonstration Area Site Reclamation As-Built Construction Drawings

(Provided in Electronic Format)

Appendix B Project Correspondence

Appendix B.1 Correspondence

Appendix B.2 Monthly Reports

Appendix B.3 Project and Contractor Logs

Appendix B.4 Meeting Minutes

Appendix C Project Data

Appendix C.1 Field Data

Appendix C.2 Submittals

Appendix C.3 Project Photographs

Appendix D Site-Specific Health and Safety Information

REVISION SUMMARY

Revision

No.

Author Version Description Date

Rev 0 Bryn Vetter Draft Issued for Atlantic Richfield

Company Review 09/25/2015

Rev 1 Bryn Vetter Draft Final Issued for Agency Review 10/21/2015

Rev 2 Bryn Vetter Final Issued as a Final Report 11/17/2015


Construction Completion Report Rev 2 Page 1 of 13

INTRODUCTION

This Construction Completion Report (CCR) documents construction activities completed at the

Wetland Demonstration Area 1 under the Final Wetland Demonstration Area Design

Report/Work Plan (DR/WP) (Atlantic Richfield Company, 2014). All activities for the Wetland

Demonstration Area site reclamation project were completed by the Atlantic Richfield Company

(Atlantic Richfield) in accordance with the U.S. Environmental Protection Agency (EPA) and

Montana Department of Environmental Quality (DEQ)-approved Final Wetland Demonstration

Area Design Report/Work Plan (DR/WP) (Atlantic Richfield Company, 2014).

Site Location and Background

The Silver Bow Creek/Butte Area National Priorities List (NPL) Site is located in the upper

Clark Fork River watershed and includes portions of Butte and Walkerville, Montana. The EPA

designated the original Silver Bow Creek site as a Superfund site in September 1983, under the

authority of the Comprehensive Environmental Response, Compensation, and Liability Act

(CERCLA). The EPA expanded the Silver Bow Creek site to include the Butte area in 1987.

The NPL is comprised of seven active operable units including the Butte Priority Soils Operable

Unit (BPSOU).

The Wetland Demonstration Area is an 8.9-acre parcel of land located between Montana Street

and Kaw Avenue and north of George Street in Butte, Montana. The site consisted of 11 lined

and unlined ponds used to collect water from the Metro Storm Drain (MSD) and test various

treatment modalities. The ponds were interconnected with underground infrastructure consisting

of pumping and piping systems with flow controls, electrical and communication wiring, and

sampling systems.

The EPA-issued BPSOU Record of Decision (BPSOU ROD) (EPA, 2006) stipulates in Section

12.1.2 that, “The sedimentation basin/former wetland demonstration project area near the

intersection of Kaw Avenue and George Street shall also be reclaimed according to the intended

future land use, and may be used as a potential storm water retention/detention basin under the

Surface Water Management Program.”

As part of the BPSOU, the EPA issued a Unilateral Administrative Order (UAO) (EPA, 2011)

describing remediation work to be completed within a certain time frame. Exhibit 3 of the UAO

Section 2.3 (Ground Water) stipulates that, “The wetlands demonstration area near Kaw Avenue

and George Street will be used for the construction of an emergency over flow pond (a minor

modification to the 2006 BPSOU ROD- see page 12-34 of the ROD)).”

The BPSOU ROD (EPA, 2006) originally required reclamation of the area and/or consideration

of the area as a potential catch basin. The 2011 Butte Priority Soils Explanation of Significant

Differences (ESD) noted that the area would be used for an overflow pond instead of being

considered for a catch basin. Subsequent to the ESD being issued by the EPA, the remedial

design process for the MSD Interception System included constructing a redundant transfer pipe

from the MSD to the Butte Treatment Lagoons (BTL), which reduced the necessary size for the

overflow pond. Both the redundant pipe and the smaller emergency construction overflow pond



were designed as part of the remedial action described in the Draft Final Metro Storm Drain

(MSD) Pump Station Upgrades Work Plan (Atlantic Richfield Company, 2013) and the Final

Wetland Demonstration Area Design Report/Work Plan (DR/WP) (Atlantic Richfield Company,

2014).

Construction Completion Report Contents

This CCR contains, or incorporates by reference, the following information:

Description of construction activities (Section 2.0);

Project documentation and schedule (Section 3.0);

Construction quality assurance and deviations from the Final Wetland Demonstration Area

Design Report/Work Plan (DW/WP) (Atlantic Richfield Company, 2014) (Section 4.0);

Safety and environmental considerations (Section 5.0);

Institutional controls (ICs) (Section 6.0);

Documentation that construction was performed according to the design specifications and

complying with the performance standards (Section 7.0); and

References (Section 8.0).

Appendix A contains the As-Built Construction Drawings and the following appendices contain

electronic project information: Project Correspondence (Appendix B); Field Data, Submittals,

Project Photographs (Appendix C); and the Site-Specific Health and Safety Information

(Appendix D).

DESCRIPTION OF CONSTRUCTION ACTIVITIES

This section contains a detailed description of all major tasks associated with the Wetland

Demonstration Area reclamation pertaining to the Final Wetland Demonstration Area Design

Report/Work Plan (DR/WP) (Atlantic Richfield Company, 2014). Included are construction

activities associated with the following:

Removing the infrastructure associated with the former Wetlands Demonstration Program

activities;

Reclaiming the area used by the former Wetlands Demonstration Program as described by

the BPSOU ROD (EPA, 2006) and illustrated by Exhibit 19 of the Allocation and Settlement

Agreement and mutual release of claims by and between the City and County of Butte-Silver

Bow and Atlantic Richfield Company (BP, 2006); and

Constructing a dewatering pond as directed by the EPA.

The Wetland Demonstration Area reclamation work began on September 3, 2014, and was

substantially completed on June 2, 2015. Final project punch list items were completed on June

10, 2015. The sections below contain the detailed project task descriptions. Table 1 summarizes

all construction activities in a schedule format.



Mobilization/Demobilization

Equipment mobilized on September 3, 2014 and continued throughout the project as equipment

was needed. Demobilization continued throughout the project as equipment was no longer

needed and was completed by June 10, 2015.

Utility Location

The existing utilities within the Wetland Demonstration project area consisted of underground

electrical lines, overhead electrical lines, sanitary sewer piping, potable water, and irrigation and

sprinkler lines. The former Wetlands Demonstration Program infrastructure included buried

electrical and communication lines, piping systems, valves, monitoring equipment, pond lining

systems, sampling systems, flow controls, and manholes.

Prior to construction, the approximate location of existing utilities were located and marked

using stakes, flags, and paint. A blind sweep search was then conducted to locate any unknown

utilities or anomalies within the Non-Isolation Area. The utilities within or leaving the Non-

Isolation areas were potholed to obtain their actual location and depth. The locations of all area

utilities are shown on the As-Built Construction Drawings provided in Appendix A.

Infrastructure Removal

The former Wetlands Demonstration Program infrastructure included buried electrical and

communication lines, piping systems, valves, monitoring equipment, pond lining systems,

liner cover materials, sampling systems, flow controls, and manholes. These infrastructure

items were excavated, dismantled, and disposed of in the Mine Waste Repository (MWR)

along with any impacted materials developed during the excavation process.

Cover material, liner, and infrastructure were removed from the Kaw Avenue Pond without

damaging or eliminating the pond structure. The Bypass pipeline buried in the west dike, as

shown in the original design drawings was abandoned in place. The ends of the 8-inch high

density polyethylene (HDPE) pipe were capped using a mechanical joint restraint and cap.

The split-rail fence surrounding the pond was removed and disposed. Existing infrastructure that

was removed includes the intake piping, intake valve control manhole, valves, bypass piping,

discharge piping ports, discharge piping, concrete pad, discharge valve control manhole,

distribution box, and distribution valves.

All necessary excavations for removing infrastructure were conducted according to the

policies outlined by BP-Remediation Management (RM) and the Occupational Safety and

Health Administration (OSHA). All excavations were backfilled with native soils,

compacted, and graded to match final site contours.

Due to the quantity of buried abandoned cables and pipes existing from the historical operation

of the former Wetlands Demonstration Program and the current live utilities, the work area was



broken into Isolation Areas and Non-Isolation Areas. The boundaries of the Isolation Areas and

Non-Isolation Areas used during construction are shown on the As-Built Construction Drawings

(Appendix A).

2.3.1 Non-Isolation Areas

Non-Isolation Areas were defined as all areas outside of the Wetland Demonstration area fence

line and those areas inside the Wetland Demonstration area fence line within 25 feet of any

known live or potentially live utility. Underground utilities (live and abandoned) were located

and clearly marked prior to excavating and removing the Wetland Demonstration area

infrastructure. Non-Isolation Areas followed all aspects of BP-RM Ground Disturbance Defined

Practice (BP-RM, 2012).

2.3.2 Isolation Area

Isolation Areas were defined as areas to be excavated within the Wetland Demonstration area

fence line that had previously documented infrastructure components such as piping systems,

valves, monitoring equipment and/or disconnected electrical and communication lines and were

farther than 25 feet from any known live or potentially live utility. To facilitate removing the

infrastructure components within the Isolation Area, ground disturbance procedures as outlined

in the BP-RM Ground Disturbance Defined Practice (BP-RM, 2012) were not be followed due to

the following site conditions:

Existing electrical lines and communications lines to be removed within the work area had

been previously abandoned or otherwise disconnected;

All former Wetland Demonstration Program piping systems were non-pressurized and were

used in the conveyance of groundwater only;

Based on as-built drawings, locating buried infrastructure components could be determined

or identified in the field based on component materials (e.g., polyvinyl chloride [PVC]

pipes); and

Excavation areas are located greater than 25 feet from any documented underground

structure/utility whose exact location, depth, size, and alignment was to be verified.

2.3.3 Utilities Termination

Electrical service to the property was terminated at the meter following Butte-Silver Bow (BSB)

and State of Montana electrical code and was performed by a licensed electrician. The overhead

electric line to the drop pole on the property was left in place for future use.

The service sewer line that connected the operations trailer and the main sewer was terminated

approximately 10 feet from the manhole connecting it to the main sewer line. Jordan

Contracting, Inc. (JCI) exposed and cut the service pipeline and constructed a concrete plug in

the pipe to be abandoned. JCI coated the exterior of the concrete plug with two coats of

waterproofing as directed. The location and typical construction of the plug is shown on the As-

built Construction Drawings (Appendix A). The service sewer line was removed and discarded.



The 0.75-inch service water line that connected the operations trailer and the Kaw Avenue water

main was terminated and removed. The termination of the 0.75-inch water service line was

accomplished by exposing the curb stop located off the Kaw Avenue water main, turning the

stop off, disconnecting the service line from the curb stop, inserting a plug on the exposed end of

the curb stop, and backfilling the excavation to finished grade. A steel marker painted blue

designates the location of the disconnection site.

2.3.4 Removal and Disposal of Chain-Link Fence

The 6-foot security chain-link fence that was removed included 261 feet of the north-south leg

along the western border of the work area and 70 feet of fencing along Kaw Avenue beginning at

the Poore-Wilde walking trail and heading north. JCI removed the mesh wire, supports, fence

posts, and concrete associated with the existing fence. The mesh and any useable bracing or

hardware was transported to the Parrott Yard for storage. Posts and concrete were hauled to the

MWR for disposal. JCI backfilled the resulting voids with clean fill material sourced within the

work area.

KAW AVENUE POND CONSTRUCTION

The former Wetlands Demonstration Program surge pond (Kaw Avenue Pond) on the eastern

end of the property was modified for use as an emergency construction overflow pond to satisfy

the conditions of the BPSOU ROD (EPA, 2006) and UAO (EPA, 2011). The existing Wetland

Demonstration infrastructure was removed or abandoned. A new geosynthetic clay liner (GCL)

was installed over and covered with material sourced from the Anaconda Smelter stockpile

located in Anaconda, Montana. A riprap apron was installed in the southeast corner of the pond.

The entire pond structure was enclosed with a 6-foot chain-link fence and is accessed by a 16-

foot wide double panel gate. 2.4.1 Geosynthetic Clay Liner, Cover Material, and Riprap Installation

JCI removed the existing cover material and liner system and hauled the material to the MWR.

Subgrade material was placed, smoothed and compacted to level the subgrade. The pond slopes

were hand raked to remove any protrusions. Bentomat ST GCL was installed following

manufacturer’s directions. The 15-foot panels were placed with the longitudinal seams running

parallel along the slope when possible. A 12-inch overlap at the panel seams received a

continuous bead of granular sodium bentonite to seal the overlap seam. The GCL was anchored

to the outside perimeter of the pond as detailed on the As-built Construction Drawings

(Appendix A).

The GCL cover material consists of 1-inch minus non-angular aggregate placed at a minimum

18-inch depth along the bottom and perpendicular to the slopes. The top of the pond received a

12-inch cover which was sourced from the Smelter Hill stockpile.

A riprap apron was installed in the southeast corner along the south slope of the Kaw Avenue

Pond. The riprap apron consists of a uniform 1-foot thick layer of riprap underlain with

geotextile fabric. Riprap material was sourced from the West Side Soils stockpile.



2.4.2 Gravel Access Pad and Traffic Barriers

A gravel access pad was constructed as an entrance/exit approach to Kaw Avenue as shown on

the As-built Construction Drawings (Appendix A). Construction of the gravel access pad was

completed by removing 12 inches of native material and placing the excavated material in the

adjacent regrading area. The subgrade was compacted prior to installing the Geotex® 801

geotextile. Two 6-inch lifts of 0.75-inch road base was placed, graded, and compacted.

Decorative boulders were placed to act as traffic barriers. The access box for the communication

utility line that parallels Kaw Avenue was upgraded to a traffic-rated unit by the utility owner.

2.4.3 Chain-Link Security Fence and Gate Installation

As an Institutional Control (IC) approximately 475 linear feet of 6-foot security chain link fence

was installed to enclose the Kaw Pond. The newly installed fencing was attached to the existing

fencing along Kaw Avenue. Access to the Kaw Pond is available through a dual panel 16-foot

security gate located in the southeast corner of the pond near the riprap apron. One

“AUTHORIZED PERSONNEL ONLY” sign is affixed to the south fence.

Regrading

Following the removal of the buried infrastructure and pond lining systems, all disturbed areas

were graded as necessary to approximately restore the contours of the pond structures and

infrastructure removal areas to blend with the contours of adjacent areas.

Subgrade soil samples were tested for pH and metals content of all areas to be revegetated.

Twenty-five (25) samples were used to determine the cover type. Areas that had a pH of less

than 5.5 and/or metals concentrations exceeding the open space parameters of the BPSOU ROD

(EPA, 2006) received a 2-inch layer of limestone and a 12-inch layer of Helehan Borrow

material. All areas then received a 6-inch cover of growth media. Sheet C12a-AB of the

Construction Drawings shows the areas of each remedy. Locations of the XRF samples and the

results can be found in Appendix C.1: Field Data.

2.5.1 Surface Leveling and Smoothing

Existing pond berms were pushed into the pond cavity. Any pond slope (excluding the Kaw

Avenue Pond) greater than 3 Horizontal (H):1 Vertical (V) was reduced to a 3H:1V or flatter as

shown on the As-built Construction Drawings (Appendix A). Additional material from the

Helehan Borrow Area was placed in Pond 4 and Pond 7 to raise the depression floor elevation

approximately 2 feet above the median groundwater elevation to eliminate water ponding.

2.5.2 Limestone Acquire and Install

Following surface leveling and smoothing, areas designated to receive limestone application

were delineated in the field. A minimum 350 tons/acre (approximately a 2-inch thick layer) of

limestone were placed on the designated areas. Total area receiving the limestone layer was

69,354 square feet.



2.5.3 Helehan Borrow Installation

All areas that received limestone as described in Section 2.5.2 also received a 12-inch cover of

Atlantic Richfield Company (Atlantic Richfield)-provided materials sourced from the Helehan

Borrow Area. A 14-inch loose lift of Helehan material was placed over the limestone to achieve

a 12-inch settled thickness of material. The Helehan cover edges were blended into the

surrounding contours. Total area receiving the 12-inch Helehan Borrow material layer was

134,916 square feet.

2.5.4 Growth Media Acquire and Install

JCI was required to install a 6-inch layer of growth media meeting the specifications for cover

soil found in the Butte Hill Revegetation Specifications. An 8-inch layer of Helehan Borrow

material was placed over all areas requiring revegetation to achieve a 6-inch settled layer.

Compost material from EKO Compost was hauled, spread, and incorporated into the top 6 inches

of the Helehan Borrow material. Final organic content of the growth media sampled was 1.94%.

Laboratory results for the organic testing can be found in Appendix C.1: Field Data. Total area

receiving growth media was 305,811 square feet.

REVEGETATION

Revegetation was completed on approximately 7 acres that were disturbed by construction

activities. Areas accessible for revegetation equipment were drill seeded. Inaccessible areas

were broadcast seeded at double the drill seed rate.

Revegetation included preparing seedbeds, and applying fertilizer and seed. Excessively tight or

compacted soils were loosened to a minimum depth of 4 inches by disking using a standard

tractor and disk. Fertilizer application was completed using a standard tractor and fertilizer

spreader and a standard tractor and disk. Seed application was completed using a standard

tractor and drill seeder. The Butte Hill 1997 Primary Seed Mixture was used and the seed mix

submittal is provided electronically in Appendix C.2. A cover crop of spring barley was added

to the seed mix in lieu of using straw mulch. The use of spring barley was approved in Request

for Change (RFC)-2 which is included in Appendix B.1.

PROJECT DOCUMENTATION AND SCHEDULE

Work Plan Completion Form

Representatives from Atlantic Richfield, the EPA, and Pioneer Technical Services, Inc. (Pioneer)

completed a site walk-through on June 2, 2015. Outstanding work items were listed for

completion. All construction work items were completed on June 10, 2015. The signed Work

Plan Completion Form is provided in Appendix B.1.



Project Correspondence

Relevant correspondence between Atlantic Richfield, Atlantic Richfield contractors, the

Agencies, and additional project members pertaining to the Wetland Demonstration Area site

reclamation construction activities are provided in Appendix B.1 and summarized as follows:

Correspondence (Atlantic Richfield Company, May 31, 2013). Submitted the initial Draft

Final Wetland Demonstration Area Design Report/Work Plan (Atlantic Richfield Company,

2013) to the Agencies for review and comment.

Correspondence (EPA, September 4, 2013). Submitted approval letter with comments for

consideration of the Draft Final Wetland Demonstration Area Design Report/Work Plan

DW/WP) to Atlantic Richfield.

Correspondence (Atlantic Richfield, March 11, 2014). Submitted comment responses and

replacement pages for the Final Wetland Demonstration Area Design Report/Work Plan

DW/WP) (Atlantic Richfield Company, 2014) to the Agencies.

Correspondence (Atlantic Richfield, June 17, 2014). Submitted RFC-1 (2014) to the

Agencies proposing a change in remedial action from removal of low pH material to

placement of a lime break and 12-inch cover. Also proposed was the expansion of pH and

X-ray Fluorescence (XRF) testing to the entire site.

Correspondence (EPA, June 24, 2014). Submitted approval letter for RFC-1 (2014) to

Atlantic Richfield.

Correspondence (Atlantic Richfield, April 13, 2015). Submitted Request for Change (RFC)

RFC-2 (Atlantic Richfield Company, 2015) to the Agencies proposing to place a growth

media cover on the area north of the walking trail to the current remediated area. The growth

media cover would be a minimum 6-inch cover and increase to 18 inches going north. Also

proposed were the elimination of straw mulch application and the inclusion of spring barley

into the seed mix.

Correspondence (EPA, April 15, 2015). Submitted approval letter for RFC-2 (EPA, 2015) to

Atlantic Richfield.

June 2, 2015 – Signoff on the Work Plan Completion Form by the EPA Representative,

Atlantic Richfield Representative, BSB Representative, Contractor Construction

Superintendent, and Project Oversight Representative, indicating that the majority of all work

items had been completed and there were outstanding punch list items.

Project Monthly Reports

Monthly reports were submitted to the Agencies containing the previous month’s remedial action

activities, the next month’s remedial action activities, a summary of test results, reports

submitted, modifications to work plans, community relations support, health and safety

information, and outstanding RFC and submittals. Monthly reports submitted by Atlantic

Richfield are provided in Appendix B.2.



Daily Project and Contractor Logs

Project logs containing daily construction activities and other project information were

completed and reviewed by the on-site EPA representative. The contractor completed daily

contractor logs containing daily construction activities and other contractor information. All

project and contractor logs are provided in Appendix B.3.

Project Meetings

Construction progress meetings between Atlantic Richfield, Atlantic Richfield contractors, and

the Agencies pertaining to the Wetland Demonstration Area site reclamation construction

activities occurred bi-weekly. Meeting notes for all relevant meetings, including the weekly

Construction Progress Meeting minutes, are provided in Appendix B.4.

Project Schedule

A project schedule depicting the overall schedule for the Wetland Demonstration Area site

activities including start dates, completion dates, and duration of each task is shown in Table 1.

CONSTRUCTION QUALITY ASSURANCE

The Technical Specifications (Appendix B of the Final Wetland Demonstration Area Design

Report/Work Plan [DR/WP] [Atlantic Richfield Company, 2014]) for the construction work

were used as control for the following items:

Project organization and responsibilities;

Safety reporting and documentation;

Reporting requirements;

Record keeping;

Meetings;

Site controls;

Daily logbooks;

Construction surveys;

Manufacturers’ literature and information;

Testing and inspections; and

Daily foreman reports.

Material Testing Results

All tests performed were completed in accordance with the Technical Specifications of the Final

Wetland Demonstration Area Design Report/Work Plan (DR/WP) (Atlantic Richfield Company,

2014), and results are provided in Appendix C.1.



Quantities of Materials

Table 2 provides the quantities of materials used during the Wetland Demonstration Area site

reclamation construction activities. Submittals for construction materials are provided in

Appendix C.2.

Project Photographs

Construction photographs of all work completed during the Wetland Demonstration Area site

reclamation are provided in Appendix C.3.

Deviations

Deviations from the Final Wetland Demonstration Area Design Report/Work Plan (DR/WP)

(Atlantic Richfield Company, 2014) are shown on the As-Built Construction Drawings

(Appendix A), documented on daily project logs (Appendix B.3), and summarized as follows:

During the pre-bid meeting, it was decided to leave the fence along the north perimeter and

Kaw Avenue to the southern edge of the Kaw Pond. The fencing installed to enclose the

Kaw Pond was changed from 8 feet to 6 feet to match the existing fencing.

During the utility locate exercise, a telephone line was discovered that was not on the plot

plan. This telephone line branched off the main line along Kaw Avenue and ended in the

location of the field office. The abandoned line was removed during infrastructure removal.

A section of the western fence was left in place. The southern 70 feet was left in place to

secure the access road to the Horseshoe Bend outlet structure.

An additional liner and treatment media were discovered in Pond 4 during infrastructure

removal which lowered the pond floor approximately 1 foot. Helehan Borrow material was

hauled and placed in three 1-foot lifts to raise the final pond depression 2 feet above median

groundwater elevation.

Following placement and grading of the 6-inch growth media over the sanitary sewer line

that runs north-south through the work area, BSB crews excavated a portion of the line to

complete repairs unrelated to the reclamation work. The BSB crews backfilled the

excavation and replaced the growth media.

SAFETY AND ENVIRONMENTAL CONSIDERATIONS

Safety

The health and safety documentation for the Wetland Demonstration Area reclamation was

incorporated into the Butte Priority Soils Operable Unit Site-Specific Health and Safety Plan

(Pioneer, 2015) and the Site Specific Health and Safety Plan: Wetland Demonstration Area Site

Reclamation (Jordan Contracting Inc., 2014). The project safety requirements are provided in

Appendix D and are briefly described in the following sections.



5.1.1 Safety Meetings

Safety meetings discussing safety information relevant to the Wetland Demonstration Area site

reclamation construction activities were held on a daily basis.

5.1.2 Personal Protective Equipment

Personal protective equipment (PPE) required for workers depended on each task activity

throughout the project. The minimum level of protection was Level D and consisted of steel-

toed boots, long-sleeved shirts, eye protection, reflective vest, hardhat, and gloves.

5.1.3 Lost-Time Accidents

No lost-time accidents occurred during the Wetland Demonstration Area site reclamation

construction activities.

5.1.4 Recordable Incidents

No recordable incidents occurred during the Wetland Demonstration Area site reclamation

construction activities.

Environmental Considerations

5.2.1 Dust Control

Fugitive dust emissions as a result of construction activities were controlled using water trucks.

Periodic wetting of the surface materials controlled the dust on the haul roads, in the grading

areas, and in the loading operation areas.

5.2.2 Migratory Birds and Endangered Species

No migratory birds or endangered species were encountered or documented during the Wetland

Demonstration Area site reclamation construction activities.

5.2.3 Existing Wetlands

No wetlands were encountered or documented during the Wetland Demonstration Area site

reclamation construction activities.

5.2.4 Historical Preservation

No historical structures were encountered or documented during the Wetland Demonstration

Area Site Reclamation construction activities.



INSTITUTIONAL CONTROLS

The Wetland Demonstration Area property is owned by Atlantic Richfield. Institutional controls

consisted of various traffic control measures and pedestrian protection measures as outlined in

the Site-Specific Health and Safety Plan: Wetland Demonstration Area Site Reclamation

Revision 1 (JCI, 2014) provided in Appendix D. A permanent security fence was installed to

enclose the Kaw Pond. Large boulders were placed around the gravel access pad to discourage

traffic from entering the reclaimed area.

PERFORMANCE STANDARDS/ARARS COMPLIANCE

The BPSOU ROD (EPA, 2006) identifies performance standards for the remedial

design/remedial action within the BPSOU and clarifies the extent to which Applicable or

Relevant and Appropriate Requirements (ARARs) apply. No modifications to the ARARs were

required to complete the Wetland Demonstration Area site reclamation project.



REFERENCES

Atlantic Richfield Company, 2013. Silver Bow Creek/Butte Area NPL Site, Butte Priority Soils

Operable Unit, Draft Final Metro Storm Drain (MSD) Pump Station Upgrades Work

Plan. May 31, 2013.

Atlantic Richfield Company, 2014. Silver Bow Creek/Butte Area NPL Site, Butte Priority Soils

Operable Unit, Final Wetland Demonstration Area Design Report/Work Plan (DW/WP).

March 11, 2014.

BP, 2006. Allocation and Settlement Agreement and Mutual Release of Claims by and Between

the City and County of Butte-Silver Bow and Atlantic Richfield Company. December

2006.

BP-RM, 2012. BP Remediation Management Ground Disturbance Defined Practice.

EPA, 2006. Environmental Protection Agency, Region 8. Butte Priority Soils Operable Unit

(BPSOU) Record of Decision (ROD). September, 2006.

EPA, 2011. Environmental Protection Agency, Region 8. Unilateral Administrative Order

Docket No. CERCLA-08-2011-0011 (UAO). September 2, 2011.

JCI, 2014. Site-Specific Health and Safety Plan: Wetland Demonstration Area Site Reclamation

Revision 1. August 26, 2014.

Pioneer, 2015. Butte Priority Soils Operable Unit Site-Specific Health and Safety Plan Revision

1. February 23, 2015.

TABLES

Table 1 - Project Schedule ID Task Name Duration Start Finish

Aug 3, '14 Aug 24, '14 Sep 14, '14 Oct 5, '14 Oct 26, '14 Nov 16, '14

30 7 15 23 31 8 16 24 2 10 18 26 3 11 19 27 1 Butte Priority Soils Operable Unit Wetland Demonstration Area

Site Reclamation 56 days Sun 8/17/14 Thu 11/20/14

2 Pre�Construction Meeting 0 days Sun 8/17/14 Sun 8/17/14 3 Pre�Mobilization Submittals and Mobilization 4 days Mon 8/18/14 Thu 8/21/14 4 Supervision 56 days Mon 8/18/14 Thu 11/20/14 5 Safety 56 days Mon 8/18/14 Thu 11/20/14 6 Dust Control 56 days Mon 8/18/14 Thu 11/20/14 7 Infrastructure Removal 32 days Mon 8/18/14 Thu 10/9/14 8 Utility Locates 2 days Mon 8/18/14 Tue 8/19/14 9 Utility Termination 3 days Wed 8/20/14 Mon 8/25/14 10 Demolition & Disposal of Pond Structures and Infrastructure 26 days Tue 8/26/14 Wed 10/8/14 11 Chain�link Fence Removal 1 day Thu 10/9/14 Thu 10/9/14 12 Kaw Avenue Pond Construction 16 days Tue 9/9/14 Mon 10/6/14 13 Geosynthetic Clay Liner, Cover Material, and Riprap Installation8 days Tue 9/9/14 Mon 9/22/14 14 Chain�link Security Fence Installation 8 days Tue 9/23/14 Mon 10/6/14 15 Regrading 19 days Thu 10/9/14 Tue 11/11/14 16 Surface Leveling/Smoothing 6 days Thu 10/9/14 Mon 10/20/14 17 Limestone Placement 8 days Tue 10/21/14 Mon 11/3/14 18 Helehan Borrow Placement 12 days Wed 10/22/14 Tue 11/11/14 19 Growth Media Placement 12 days Wed 10/22/14 Tue 11/11/14 20 Fertilizer and Seed Application 3 days Wed 11/12/14 Mon 11/17/14 21 Gravel Pad Installation 1 day Tue 11/18/14 Tue 11/18/14 22 Site Cleanup and Demobilization 4 days Mon 11/17/14 Thu 11/20/14

Project: Wetland Demonstration Area Site Reclamation

Task Milestone Summary

Final RDU 5 Son of Blue Lagoon RA RR and PVT Property CCR Table 4: Quantities of Materials

Page 1 of 1

TABLE 2: QUANTITIES

MATERIALS QUANTITIES NOTES Lime Backfill 69,354 SF* Lime rock material was placed in a 2” lift within the areas showing low pH. See Sheet C12a-AB of the As-built Drawing Package.

Helehan Backfill 134,916 SF* Helehan Borrow material was placed in a 12” lift within the areas showing low pH and in the area north of the walking trail. See Sheet C12a-AB of the As-built Drawing Package.

Growth Media 305,811 SF* Growth Media was placed in a 6” lift over all areas following grading.

Type I Riprap 110 CY** Riprap was placed as part of the energy dissipater in the southeast corner of Kaw Pond. See Sheets SOBL1-AB, SOBL3-AB, and D1-AB of the Private Property Drawing Package.

Geotextile 4,540 SF Geotextile was placed as a separation barrier between the GCL cover and the riprap and between native soil and the gravel access pad. Geosynthetic Clay Liner 6,845 SF* GCL was replaced as part of the Kaw Pond construction.

1” minus cover 1,520 CY** Non-angular 1” minus cover was placed in an 18” lift over the newly installed GCL. ¾” Road Mix 160 CY** Road mix was used to construct the access pad from Kaw Avenue.

Chain Link Fence 475 LF* Permanent fence was installed to enclose the Kaw Pond. Butte Hill Revegetation Mix 305,811 SF* Butte Hill Revegetation Mix was placed within the disturbed footprint of the remedial action work area.

CY – cubic yards LF – lineal feet SF – square feet lbs – pounds

* - Quantity based on survey. ** - Quantity based on load count.

APPENDIX A

WETLAND DEMONSTRATION AREA SITE RECLAMATION

AS-BUILT CONSTRUCTION DRAWINGS

WETLAND DEMONSTRATION

PREPARED BY

PIONEER TECHNICAL SERVICES, INC.

AREA SITE RECLAMATION

ATLANTIC RICHFIELD COMPANY

PREPARED FOR

SEPTEMBER 2015

AS-BUILT CONSTRUCTION SET

GENERAL NOTES1. CONTRACTOR SHALL NOTIFY IN WRITING ALL UTILITY COMPANIES AND UTILITY OWNERS AND DETERMINE EXACT LOCATION OF ALLUNDERGROUND UTILITIES BEFORE COMMENCING WORK. NOTICE TO UTILITIES SHALL BE SUBMITTED TO OWNER; 48-HOUR NOTICE IS REQUIRED.CONTRACTOR IS RESPONSIBLE FOR PROTECTING AND REPAIRING ANY DAMAGED UTILITIES. CONTRACTOR SHALL NOTIFY ONE-CALL UTILITYLOCATE AT (800) 424-5555 AT LEAST 48-HOURS PRIOR TO CONSTRUCTION.

2. UTILITY LOCATIONS SHOWN ON THE DRAWINGS ARE APPROXIMATED BASED ON RECORDS PROVIDED BY THE UTILITY OWNERS. ALL UTILITYLOCATIONS SHOWN ARE SUBJECT TO THE ACCURACY OF THE LOCATION METHODS AND RECORDS EMPLOYED BY THE UTILITY OWNERS. UTILITIESARE ALSO SUBJECT TO RELOCATION SINCE THE DRAWINGS WERE PREPARED. NO EXCAVATION WAS PERFORMED IN LOCATING THESE UTILITIESUNLESS OTHERWISE NOTED. UTILITY LOCATIONS SHOWN SHOULD BE CONSIDERED APPROXIMATE AND ACTUAL DEPTHS MAY VARY.

3. CONTRACTOR SHALL CONTACT UTILITY COMPANIES 48 HOURS PRIOR TO TRENCHING WITHIN 15 FEET OF ALL OVERHEAD POLES TO ALLOW FORTHE UTILITY COMPANY TO SECURE POLES. ANY FEES CHARGED BY UTILITY OWNERS FOR PROTECTION AND ANCHORING WILL BE THERESPONSIBILITY OF THE CONTRACTOR.

4. CONTRACTOR SHALL NOTIFY ENGINEER OF ALL UTILITIES ENCOUNTERED DURING CONSTRUCTION AND SHALL NOT BACKFILL UNTIL THECONTRACTOR HAS MADE A RECORD OF ITS TYPE, SIZE, AND LOCATION. CONTRACTOR SHALL BACKFILL AND COMPACT FILL SOIL AROUNDUTILITIES SO THAT UTILITIES WILL NOT BE DAMAGED DURING COMPACTION OR FROM FUTURE SOIL SETTLING.

5. CONTRACTOR IS RESPONSIBLE FOR ANY REPAIRS REQUIRED. SURFACE AND SUBSURFACE FEATURES SHOWN ON THE DRAWINGS ARE BASEDON EXISTING MAPS, VERBAL ADVICE, AND OTHER RECORDS OBTAINED FROM BUTTE-SILVER BOW, THE MONTANA DEPARTMENT OFTRANSPORTATION, UTILITY OWNERS, AND OTHER SOURCES AND LIMITED FIELD INVESTIGATION. ALL PERTINENT FEATURES SHOWN ON THESERECORDS ARE SHOWN ON THE DRAWINGS. HOWEVER, THE ENGINEER ANTICIPATES THAT ALL SURFACE AND SUBSURFACE FEATURES ARE NOTNECESSARILY SHOWN. THE ENGINEER ANTICIPATES THAT SUBSURFACE FEATURES NOT INDICATED ON THE DRAWINGS WILL BE ENCOUNTERED.

6. WHERE EXISTING UTILITY (TELEPHONE, ELECTRICAL, GAS, ETC.) RELOCATES ARE REQUIRED ON THE DRAWINGS, THE CONTRACTOR IS TOARRANGE FOR AND PAY THE COST OF SUCH RELOCATIONS, BUT THE ACTUAL WORK IS TO BE PERFORMED BY THE APPROPRIATE UTILITYCOMPANY.

7. WHEN EXISTING UTILITY LINES ARE TEMPORARILY SHUT DOWN, THE TIMES MUST BE APPROVED BY THE UTILITY OWNER AND OWNER.

8. CONTRACTOR SHALL REMOVE AND REPLACE ALL EXISTING FEATURES DISTURBED DURING CONSTRUCTION TO ORIGINAL CONDITION,INCLUDING BUT NOT LIMITED TO, SIGNS, MAILBOXES, ENTRANCE STRUCTURES, IRRIGATION DITCHES, APPROACHES, DELINEATORS, GRAVELSURFACES, CONCRETE STRUCTURES INCLUDING CURBS AND SIDEWALKS, ASPHALT PAVEMENT, LANDSCAPING, AND FENCES. CONTRACTORSHALL FIELD VERIFY EXTENT OF THIS WORK PRIOR TO BID AND INCLUDE THE COST OF THIS WORK IN HIS UNIT PRICES.

9. ALL FENCES REMOVED TO ALLOW FOR CONSTRUCTION SHALL ONLY BE REMOVED AFTER RECEIVING PERMISSION FROM THE AFFECTEDLANDOWNER. IF REQUIRED BY THE LANDOWNER, THE CONTRACTOR SHALL INSTALL TEMPORARY OFFSET FENCING. REMOVED FENCES SHALL BEREINSTALLED TO A CONDITION THAT IS EQUAL TO OR BETTER THAN THE ORIGINAL.

10. TRAFFIC CONTROL: A. GENERAL: CONSTRUCTION SHALL NOT COMMENCE ON THE PROJECT UNTIL NECESSARY CONSTRUCTION WARNING SIGNS AND TRAFFICCONTROL ARE IN PLACE AND APPROVED BY THE OWNER OR ITS REPRESENTATIVE. B. TRAFFIC PLAN: CONTRACTOR SHALL PREPARE AND SUBMIT FOR REVIEW BY THE OWNER'S REPRESENTATIVE A TRAFFIC CONTROL PLAN(WHERE APPLICABLE). THE OWNER'S REPRESENTATIVE SHALL CONSULT WITH BUTTE-SILVER BOW AND/OR THE MONTANA DEPARTMENT OFTRANSPORTATION (MDT) BEFORE APPROVING TRAFFIC CONTROL PLANS. ALL TRAFFIC CONTROL SHALL BE IN ACCORDANCE WITH THE LATESTEDITION OF THE MANUAL ON UNIFORM TRAFFIC CONTROL DEVICES. C. STREET CLOSURES: AT LEAST ONE-WAY TRAFFIC SHALL BE MAINTAINED AT ALL TIMES ON ALL ROADS UNLESS SPECIAL PERMISSION ISOBTAINED FROM BUTTE-SILVER BOW AND/OR MDT FOR STREETS UNDER THEIR JURISDICTION, PERMISSION FOR TEMPORARY ROAD CLOSURESMUST ALSO BE OBTAINED FROM THE MONTANA DEPARTMENT OF TRANSPORTATION. D. LOAD LIMITS: LEGAL LOAD LIMIT REQUIREMENTS SHALL BE ENFORCED ON ALL STATE HIGHWAYS, CITY STREETS, AND COUNTY ROADS. E. CONTRACTOR'S TRUCK TRAFFIC SHALL BE LIMITED TO THE HAUL ROUTES INDICATED IN THE CONTRACT DOCUMENTS OR ON OTHERDESIGNATED TRUCK ROUTES.

11. CONTRACTOR IS TO PROVIDE WATER FOR DUST CONTROL AND COMPACTION.

12. ALL INFRASTRUCTURE LOCATIONS ARE BASED ON THE INFORMATION PRESENTED IN THE "WETLANDS DEMONSTRATION PROGRAM DESIGNFINAL DESIGN PLANS AND TECHNICAL SPECIFICATIONS". INFRASTRUCTURE SHOWN ON THE DRAWINGS ARE APPROXIMATE LOCATIONS.CONTRACTOR IS RESPONSIBLE FOR LOCATING ALL KNOWN AND UNKNOWN INFRASTRUCTURE WHICH MAY EXIST ON SITE.

13. MAINTAIN ADEQUATE COVER OVER ALL UTILITIES TO PREVENT DAMAGE FROM FREEZING OR EQUIPMENT TRAVEL.

SHEET INDEX

EX. STORM DRAIN

EX. UNDERGROUND PHONE

EX. UNDERGROUND POWER

EX. UNDERGROUND WATER LINE

EX. GAS LINE

EX. ROADS AND PARKING LOTS

EX. SILVER LAKE WATER LINE

EX. OVERHEAD POWER

SANITARY SEWER MAN HOLE

PIEZOMETERP

GUY POLE OR GUY WIRE

UTILITY POLE

HORSESHOE BEND EFFLUENT LINE

METRO STORM DRAIN SUBDRAIN

LEGEND

SURVEY CONTROL POINTS

ABBREVIATIONS

BURLINGTON NORTHERN SANTE FE

SILVER BOW CREEKSBC

BNSF

WETLANDS DEMONSTRATION AREA

MILLIGRAMS PER KILOGRAMMG/KG

WDA

METRO STORM DRAINMSD

EX. FENCE LINE

G1-ABG2-ABG3G4G5G6G7G8C1-ABC2-ABC3-ABC4-ABC5-ABC6-ABC7-ABC8-ABC9-ABC10-ABC11-ABC12-ABC12a-ABC13-ABD1-ABD2-ABD3-ABD4-AB

TITLE SHEET AND SITE VICINITY MAPSHEET INDEX, LEGEND, AND GENERAL NOTESWETLAND DEMO AREA GENERAL SITE PLANWETLAND DEMO AREA PROPERTY MAPWETLAND DEMO AREA WASTE REPOSITORY HAUL ROUTEWETLAND DEMO AREA HELEHAN BORROW HAUL ROUTEWETLAND DEMO AREA SITE UTILITIES AND ISOLATION AREAWETLAND DEMO AREA POND INDEXWETLAND DEMO AREA WDA POND 1 INFRASTRUCTURE REMOVALWETLAND DEMO AREA WDA PONDS 2 & 3 INFRASTRUCTURE REMOVALWETLAND DEMO AREA WDA PONDS 5, 6, & 8 INFRASTRUCTURE REMOVALWETLAND DEMO AREA WDA PONDS 4, 5, 6, & 7 INFRASTRUCTURE REMOVALWETLAND DEMO AREA WDA PONDS 9 & 10 INFRASTRUCTURE REMOVALWETLAND DEMO AREA WDA POND 11 INFRASTRUCTURE REMOVALWETLAND DEMO AREA POND GRADINGWETLAND DEMO AREA POND GRADING PLAN AND PROFILEWETLAND DEMO AREA POND GRADING PLAN AND PROFILEWETLAND DEMO AREA POND GRADING CROSS SECTIONS STA: 0+50 TO 9+00WETLAND DEMO AREA POND GRADING CROSS SECTIONS STA: 9+50 TO 12+94WETLAND DEMO AREA REVEGETATION PLANWETLAND DEMO AREA PROPOSED RESULTS BASED REMEDY PLAN VIEWKAW AVE POND INFRASTRUCTURE INSTALLATIONKAW AVE POND SECTION DETAILSKAW AVE POND GRAVEL ACCESS PAD DETAILSWETLAND DEMO AREA WATER AND SEWER ABANDONMENT DETAILSWETLAND DEMO AREA FENCE DETAIL

EX. SANITARY SEWER LINE

TRAFFIC SIGN

2" PVC PIEZOMETER CLUSTER

2" PVC STAND PIPE

3" PVC PIPE

8" PVC PIPE

PLASTIC VALVE BOX

CONCRETE OR CMP MANHOLE

PVC PIPE OUTLET

MONITORING WELL

DRAWN BY:DESIGNED BY:CHECKED BY:APPROVED BY:PROJECT NO:DATE:

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WDA POND 5

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WDA POND 7 WDA POND 9 WDAPOND 10

WDA POND 11

WDAPOND 8

NOTE:

1. ACCORDING TO THE ORIGINAL FINAL DESIGN PLANS FOR THE WETLANDS DEMONSTRATION PROGRAM:WDA POND 1 WAS FORMERLY THE TEMPORARY SEDIMENTATION POND;WDA POND 2 WAS UNIDENTIFIED;WDA POND 3 WAS UNIDENTIFIED;WDA POND 4 WAS FORMERLY THE AEROBIC A2 AND A3 POND;WDA POND 5 WAS FORMERLY THE TYPE 1A POND;WDA POND 6 WAS FORMERLY THE TYPE 1 POND;WDA POND 7 WAS FORMERLY THE AEROBIC A1 POND;WDA POND 8 WAS FORMERLY THE TYPE 2 POND;WDA POND 9 WAS FORMERLY THE 3A POND;WDA POND 10 WAS FORMERLY THE 3 POND; ANDWDA POND 11 WAS FORMERLY THE SURGE POND.

GAS LINESILVER LAKE WATER LINE

TELEPHONE LINESANITARY SEWER LINE

OVERHEAD ELECTRICAL LINE

FENCE

EFFLUENT LINE

STORM DRAIN

EDGE OF ROAD

LEGEND:

UNDERGROUND ELECTRICAL LINE

EDGE OF TRAIL

WATER LINEMETRO STORM SUBDRAIN LINE

WORK AREA BOUNDARYISOLATION AREA BOUNDARY


DISPLAYED AS:



\\192.168.252.15\PROJECT$\ANADATA\ARCO\BPSOU\MSD\WETLAND DEMO RECLAMATION\DOCUMENTS\CCR\DRAWINGS\MSDWD-AB-PLN-003-13-2.DWG9/14/2015 11:54:13 AM

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WDA POND 1

BNSF RAILR

OAD

REMOVED EXISTING FENCE.

MAINTAINED EXISTING RUN-ON CONTROLCHANNEL. ENSURED CHANNEL DRAINS

TO THE EXISTING OUTLET STRUCTURE.

EXISTING CULVERT ANDDISCHARGE TO REMAIN IN PLACE.

REMOVED PVC PIPE.

POORE WILDEWALKING TRAIL.

FENCING REMAINS IN PLACE

FENCING REMAINS IN PLACE


DISPLAYED AS:




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& 3

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WDA POND 2

WDA POND 3

REMOVED EXISTING CHAIN LINK FENCE.

MAINTAINED EXISTING RUN-ONCONTROL CHANNEL. ENSUREDCHANNEL DRAINS TO THEEXISTING OUTLET STRUCTURE.

REMOVED WDAPOND 2 INLETSTRUCTURE.

REMOVED WDA POND 2 OUTLET STRUCTURE.

REMOVED SILT FENCE.

REMOVED SURFACE PIPE.

LEGEND:


2" PVC STAND PIPE

3" PVC PIPE

8" PVC PIPE

PLASTIC VALVE BOX


PVC PIPE OUTLET

WORK AREA BOUNDRY


DID NOT DISTURB TREES ANDASSOCIATED IRRIGATION SYSTEM.

0+00


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6, &

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WDA POND 5

WDA POND 5

WDA POND 8

WDA POND 6

EXCAVATED COVER SOIL AND REMOVEDINFRASTRUCTURE AND LINER. HAULEDEXCAVATED MATERIAL TO MINE WASTE

REPOSITORY AS SHOWN IN SHEET G5-AB.

EXCAVATED COVER SOIL AND REMOVEDINFRASTRUCTURE AND LINER. HAULEDEXCAVATED MATERIAL TO MINE WASTEREPOSITORY AS SHOWN IN SHEET G5-AB.

MAINTAINED EXISTING RUN-ON CONTROLCHANNEL. ENSURED CHANNEL DRAINS

TO THE EXISTING OUTLET STRUCTURE.

REMOVED HDPE LINERAND ROCK WEIR.


LEGEND:


2" PVC STAND PIPE

3" PVC PIPE

8" PVC PIPE

PLASTIC VALVE BOX


PVC PIPE OUTLET

WORK AREA BOUNDARY



FORMER LOCATION OF CONTROL TRAILER(PREVIOUSLY REMOVED) SEE SHEET C5-AB.


DISPLAYED AS:




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5, 6

, & 7

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WDA POND 4

WDA POND 5

WDA POND 6

WDA POND 7EXCAVATED COVER SOIL AND REMOVEDINFRASTRUCTURE AND LINER. HAULEDEXCAVATED MATERIAL TO MINE WASTE

REPOSITORY AS SHOWN IN SHEET G5-AB.

EXCAVATED COVER SOIL AND REMOVEDINFRASTRUCTURE AND LINER. HAULEDEXCAVATED MATERIAL TO MINE WASTEREPOSITORY AS SHOWN IN SHEET G5-AB.

MONITORING WELLSREMAIN.

MONITORING WELLSREMAIN.

DID NOT DISTURB NWEPOWER POLE STRUCTURE.

DID NOT DISTURB SANITARY SEWERMANHOLE OR SEWER LINES.

REMOVED ELECTRIC PEDESTALAND ASSOCIATED WIRING.

REMOVED OUTLET STRUCTURES ANDASSOCIATED INFRASTRUCTURE.

REMOVED OUTLET STRUCTURES ANDASSOCIATED INFRASTRUCTURE.

REMOVED PVC.

LEGEND:


2" PVC STAND PIPE

3" PVC PIPE

8" PVC PIPE

PLASTIC VALVE BOX


PVC PIPE OUTLET

MONITORING WELL

WORK AREA BOUNDARY





DISPLAYED AS:



\\192.168.252.15\PROJECT$\ANADATA\ARCO\BPSOU\MSD\WETLAND DEMO RECLAMATION\DOCUMENTS\CCR\DRAWINGS\MSDWD-AB-PLN-003-13-2.DWG9/14/2015 12:01:26 PM

AS-BUILTAMD9-15

FINALAMD3/14

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AMDBRVADLJKE


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WDA POND 9

WDA POND 10

WDA POND 11

EXCAVATED COVER SOIL AND REMOVEDINFRASTRUCTURE AND LINER. HAULED

EXCAVATED MATERIAL TO THE MINE WASTEREPOSITORY AS SHOWN ON SHEET G5-AB.

KAW AVENUE

POWER POLE AND OVERHEAD DROPREMAIN IN PLACE ONCE UNDERGROUNDSERVICE HAD BEEN DISCONNECTED.

REMOVED EXISTING 4" SANITARY SEWERSERVICE TO CONTROL TRAILER. ABANDONEDEXISTING SEWER SERVICE AS SHOWN IN

REMOVED ELECTRICALPANEL.


REMOVED UNDERGROUND ELECTRICALSERVICE AND COMMUNICATION LINES.SEE DESIGN DRAWINGS EXHIBIT G.

DID NOT DISTURB SANITARY SEWERMANHOLE OR SEWER LINES.

APPROXIMATE LOCATION OF CONTROL TRAILER(PREVIOUSLY REMOVED). REMOVED EXISTING

INFRASTRUCTURE. REMOVED POWER AND FUSE BOXESONCE ELECTRICAL SERVICE HAD BEEN DISCONNECTED.

REMOVED INFRASTRUCTURE.

REMOVED EXISTING 3 4" WATER SERVICETO CONTROL TRAILER. ABANDONED EXISTINGWATER SERVICE AS SHOWN IN

REMOVED SANITARYSEWER SERVICE LINE.REMOVED SAMPLE

BOXES AND PLUMBING.

REMOVED OUTLETSTRUCTURES.

LEGEND:


2" PVC STAND PIPE

3" PVC PIPE

8" PVC PIPE

PLASTIC VALVE BOX


PVC PIPE OUTLET

WORK AREA BOUNDARY




SANITARY SEWER SERVICE LINE CUTAND PLUGGED WITH CONCRETE.


DISPLAYED AS:




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11

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A

12" POND OVERFLOW TOREMAINS IN PLACE.

KAW AVENUE

REMOVED EXISTING 6' CHAIN LINK FENCE FROMWALKING TRAIL TO SOUTH CORNER OF KAW POND.

REMOVED EXISTING SPLIT RAIL FENCE.

REMOVED ABANDONEDPOWER POLE.

APPROXIMATE LOCATION OF CONTROLTRAILER (PREVIOUSLY REMOVED). REMOVED

EXISTING INFRASTRUCTURE. REMOVEDPOWER AND FUSE BOXES ONCE ELECTRICAL

SERVICE HAD BEEN DISCONNECTED.

EXCAVATED COVER SOIL AND HAULED EXCAVATED MATERIAL TO THEMINE WASTE REPOSITORY AS SHOWN ON SHEET G5-AB. EXCAVATIONFOLLOWED DESIGN PARAMETERS AS SHOWN ON SHEET C13-ABAND IN ORIGINAL DESIGN DRAWINGS ENTITLED WETLANDSDEMONSTRATION PROGRAM DESIGN - BUTTE, MONTANA. EXISTINGGEOSYNTHETIC CLAY LINER REMOVED AND REPLACED.

FOLLOWING INFRASTRUCTURE REMOVAL, WDAPOND 11 REMAINED IN PLACE FOR USE ASEMERGENCY CONSTRUCTION OVERFLOW POND.SEE SHEET C13-AB.

WDA POND 11

REMOVED EXISTING 3 4" WATER SERVICETO CONTROL TRAILER. ABANDONED EXISTINGWATER SERVICE AS SHOWN IN

REMOVED EXISTINGWEATHER STATION.

REMOVED LENGTH OF PIPE AS NECESSARY TOCONSTRUCT THE ACCESS PAD. REMAINING PIPE

CAPPED. DID NOT DISTURB WALKING TRAIL.LEGEND:


2" PVC STAND PIPE

3" PVC PIPE

8" PVC PIPE

PLASTIC VALVE BOX


PVC PIPE OUTLET

WORK AREA BOUNDARY



REMOVED INLET ANDOUTLET INFRASTRUCTUREAND ASSOCIATED PIPING.


ACCESS BOX UPGRADED TO TRAFFICRATED UNIT BY UTILITY OWNER.

APPROXIMATE LOCATION OF HDPE BYPASS LINETHAT WAS CAPPED AND ABANDONED IN PLACE.

DID NOT DISTURB TREES ANDASSOCIATED IRRIGATION SYSTEM


DISPLAYED AS:



\\192.168.252.15\PROJECT$\ANADATA\ARCO\BPSOU\MSD\WETLAND DEMO RECLAMATION\DOCUMENTS\CCR\DRAWINGS\MSDWD-AB-PLN-006-13.DWG9/14/2015 12:26:05 PM

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MSPNAD 83FEETPIONEER

JKEADLBRVAMD

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PUSHED BERMS INTO PONDSAND SMOOTHED TO MATCHEXISTING SURROUNDING TOPO.

GRADED SLOPESTO A 3:1 MAX.

AS-BUILT SURFACE

EXISTING SURFACE

PUSHED BERMS INTO PONDSAND SMOOTHED TO MATCH

EXISTING SURROUNDING TOPO.

PUSHED BERMS INTO PONDSAND SMOOTHED TO MATCHEXISTING SURROUNDING TOPO.

0+00

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0+50

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.1

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54

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.7

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54

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.6

5443

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.4

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.9

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54

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.2

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DISPLAYED AS:



\\192.168.252.15\PROJECT$\ANADATA\ARCO\BPSOU\MSD\WETLAND DEMO RECLAMATION\DOCUMENTS\CCR\DRAWINGS\MSDWD-AB-PLP-004-14.DWG9/14/2015 12:36:00 PM

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EXISTING CONTOURS.

WDA POND 1

WDA POND 2

WDA POND 3

EXISTING SURFACE.


AS-BUILT SURFACE

AS-BUILT SURFACE.

RUN-ON CONTROL CHANNEL.

6+00

7+00

8+00

9+00

10+0

0

11+0

0

12+0

0

12+9

4

5435

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5435

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5455

5460

5465

7+00

54

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.2

5445

.2

7+50

54

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.1

5444

.9

8+00

54

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.6

5445

.5

8+50

54

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.0

5446

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9+00

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5446

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54

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.9


DISPLAYED AS:



\\192.168.252.15\PROJECT$\ANADATA\ARCO\BPSOU\MSD\WETLAND DEMO RECLAMATION\DOCUMENTS\CCR\DRAWINGS\MSDWD-AB-PLP-005-14.DWG9/14/2015 12:44:52 PM

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EXISTING SURFACE.

AS-BUILT SURFACE.

WDA POND 2

AS-BUILT SURFACE

WDA POND 3 WDA POND 4

WDA POND 5

WDA POND 6WDA POND 8

WDA POND 7 WDA POND 9 WDA POND 10

WDA POND 11

EXISTING SURFACE.

EXISTING SANITARY SEWER LINE.

STA 0+50

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STA 1+00

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STA 1+50

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STA 2+00

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STA 2+505440

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110

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140

150

1600-10

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STA 3+005440

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120

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150

1600-10

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STA 3+50

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5450

5430

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110

120

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140

150

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-90

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-110

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STA 4+005440

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5450

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110

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STA 4+505440

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STA 5+00

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110

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1600-10

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STA 5+50

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0 10 20 30 40 50 60 70 80 90 100

110

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1600-10

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STA 6+00

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5460

0 10 20 30 40 50 60 70 80 90 100

110

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STA 6+505440

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1600-10

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STA 7+00

5440

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5460

5440

5450

5460

0 10 20 30 40 50 60 70 80 90 100

110

120

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140

150

1600-10

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STA 7+505440

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STA 8+005440

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STA 8+505440

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5450

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140

150

1600-10

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STA 9+005440

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5450

0 10 20 30 40 50 60 70 80 90 100

110

120

130

140

150

1600-10

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DISPLAYED AS:



\\192.168.252.15\PROJECT$\ANADATA\ARCO\BPSOU\MSD\WETLAND DEMO RECLAMATION\DOCUMENTS\CCR\DRAWINGS\MSDWD-AB-XSF-001-14.DWG9/14/2015 12:46:59 PM

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LEGEND

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CUT MATERIAL

POND 2 BERM LEVELLING AND SMOOTHING





POND 5 LINER AND CAPPINGMATERIAL REMOVAL AND GRADING




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\\192.168.252.15\PROJECT$\ANADATA\ARCO\BPSOU\MSD\WETLAND DEMO RECLAMATION\DOCUMENTS\CCR\DRAWINGS\MSDWD-AB-XSF-002-14.DWG9/14/2015 12:49:01 PM

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EXISTINGSANITARY SEWER LINE

LEGEND

FILL MATERIAL

CUT MATERIAL

NOTE:

NO HAULING OF CUT/FILL MATERIAL IS ANTICIPATED TOCOMPLETE SURFACE LEVELING AND SMOOTHING.











POND 9 AND POND 10 LINERAND CAPPING MATERIALREMOVAL AND GRADING



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DISPLAYED AS:



\\192.168.252.15\PROJECT$\ANADATA\ARCO\BPSOU\MSD\WETLAND DEMO RECLAMATION\DOCUMENTS\CCR\DRAWINGS\MSDWD-AB-PLN-010-13.DWG9/14/2015 12:52:47 PM

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NOTES:

1. EXPECTED AVERAGE GROUNDWATER ELEVATION IS 5441.5 ACCORDING TO BPS07-22 AND BPS07-23MONITORING DATA.

2. DISTURBED AREAS WITHIN THE WORK AREA BOUNDARY WILL BE GRADED AS NECESSARY TOAPPROXIMATELY RESTORE THE DESIGN CONTOURS OF THE GROUND OR TO PRODUCE A CONTOUR THATWILL BLEND WITH CONTOURS OF ADJACENT AREAS.

3. FOLLOWING REGRADING, AND PRIOR TO PLACEMENT OF COVER SOIL, ATLANTIC RICHFIELD COMPANYWILL TEST SUBGRADE FOR PH AND SAMPLE FOR METALS.

4. NON METALS OR PH IMPACTED AREAS WITH ADEQUATE VEGETATIVE COVER WILL REMAIN UNDISTURBEDAND WILL NOT BE REMEDIATED.

5. NON METALS OR PH IMPACTED AREAS WITHOUT ADEQUATE VEGETATIVE COVER, AND AREAS DISTURBEDDURING REMOVAL OF EXISTING INFRASTRUCTURE, WILL RECIEVE 6 INCHES OF SUITABLE GROWTH MEDIAAND BE SEEDED/FERTILIZED IN ACCORDANCE WITH THE TECHNICAL SPECIFICATIONS.

6. A MINIMUM 350 TONS/ACRE (APPROX. 2 INCH THICK LAYER) OF LIMESTONE AND 12 INCH THICK LAYER OFOWNER PROVIDED BORROW MATERIAL TO BE PLACED PRIOR TO 6 INCH GROWTH MEDIA PLACEMENT ONAREAS IDENTIFIED AS METALS OR PH IMPACTED. AREA TO BE SEEDED/FERTILIZED IN ACCORDANCE WITHTECHNICAL SPECIFICATIONS.

LEGEND:

PRIMARY 1997 BUTTE HILL SEED MIX

BEYOND ANTICIPATED INFRASTRUCTURE AND GRADING WORK

SHEET C12 TO BE REPLACED BY SHEET 12a-AB

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\\192.168.252.15\PROJECT$\ANADATA\ARCO\BPSOU\MSD\WETLAND DEMO RECLAMATION\DOCUMENTS\CCR\APPENDIX A - AS-BUILT DRAWINGS\DRAWINGS\MSDWD-AB-PLP-013-14.DWG10/13/2015 12:32:53 PM

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6" COVERAREAS DISTURBED DURING REMOVAL OF EXISTING INFRASTRUCTURE WILL RECEIVE 6 INCHES OF SUITABLEGROWTH MEDIA AND BE SEEDED/FERTILIZED IN ACCORDANCE WITH THE TECHNICAL SPECIFICATIONS.

18" PLUS 2" LIME COVERA MINIMUM 350 TONS/ACRE (APPROX. 2 INCHES THICK LAYER) OF LIMESTONE AND 12 INCH THICK LAYER OF OWNER PROVIDED BORROW MATERIAL TO BE PLACED PRIOR TO 6 INCH GROWTH MEDIA PLACEMENT ON AREAS IDENTIFIED AS METALS OR pH IMPACTED. AREA TO BE SEEDED/ FERTILIZED IN ACCORDANCE WITH TECHNICAL SPECIFICATIONS.

MINIMUM 6 INCHES OF GROWTH MEDIA STARTING AT WALKING TRAIL EDGE AND INCREASING TO A MAXIMUM 18 INCHES GOING NORTH TO MERGE WITH EXISTING REMEDY. AREA TO BE SEEDED/ FERTILIZED IN ACCORDANCE WITH TECHNICAL SPECIFICATIONS.

9-15 AMD AS-BUILT

INSTALLED TYPE I RIPRAPAPRON FOR WATER TRUCKDISCHARGE. SEE DETAIL


DISPLAYED AS:



\\192.168.252.15\PROJECT$\ANADATA\ARCO\BPSOU\MSD\WETLAND DEMO RECLAMATION\DOCUMENTS\CCR\APPENDIX A - AS-BUILT DRAWINGS\DRAWINGS\MSDWD-AB-PLN-011-13.DWG10/13/2015 12:40:12 PM

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INSTALLED NEW GRAVELACCESS PAD. SEE DETAIL

INSTALLED "AUTHORIZEDVEHICLES ONLY" SIGN.SEE DETAIL

INSTALLED DECORATIVEBOULDERS.

SEE DETAIL

KAW AVE. POND

INSTALLED 6' x 16' CHAINLINK FENCE GATED ACCESS.SEE SHEET D4-AB.

INSTALLED 6' CHAINLINK FENCE. SEE

SHEET D4-AB.

58'

121'

2.5:1

INV EL. 5446.2

INV EL. 5446.615'


ACCESS BOX UPGRADED TO TRAFFICRATED UNIT BY UTILITY OWNER.

EXISTING HDPE BYPASS BURIED IN BERMWAS CAPPED AND ABANDONED IN PLACE.

NOTES:

1. FOLLOWING INFRASTRUCTURE REMOVAL, WDA POND 11 TO BECOME KAW AVEUNE EMERGENCEY CONSTRUCTION DEWATERING POND.

2. INSTALLED NEW GCL LINER PER MANUFACTURER RECOMMENDATIONS.

3. SEE SHEET D1 FOR POND SECTION DETAILS.

TIED 6' CHAIN LINK FENCE TOEXISTING 6' CHAIN LINK FENCE.

WATER LINE TERMINATION

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.2


DISPLAYED AS:



\\192.168.252.15\PROJECT$\ANADATA\ARCO\BPSOU\MSD\WETLAND DEMO RECLAMATION\DOCUMENTS\CCR\DRAWINGS\MSDWD-AB-DET-005-13.DWG9/10/2015 8:17:27 AM

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8' 118' 8'

8' 57' 8'

12.5

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12.5

EL. 5445.99 EL. 5446.41

EL. 5446.59

EL. 5446.19

ACCESS BERMEL. 5452.84




12"

2'

12"

GEOSYNTHETIC CLAY LINER (GCL)

PROTECTIVE SOIL COVER 18" (MIN.)

SECTION A

SECTION B

GCL & ANCHOR

12

12

RIPRAP APRON DETAILNOT TO SCALE

32"

16"

8" 24"

64"

3:13:1

3:1

3:1

3:1

12" THICK RIPRAP

DISCHARGE LINE

13

NOT TO SCALE


PROJECTION:ZONE:DATUM:UNITS:SOURCE:


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R5-11, AUTHORIZED VEHICLES ONLY SIGNNOT TO SCALE

DECORATIVE BOULDER DETAILNOT TO SCALE

GRAVEL ACCESS PAD DETAILNOT TO SCALE

SEPARATION/STABILIZATION GEOTEXTILE

GRADE TO DRAIN TOWARDS WEST

12" OF 3/4" ROAD BASE PLACEDIN TWO 6" LIFTS COMPACTED

TO 95% OF MAXIMUM DENSITY

STRIP 12" OF NATIVE TOP SOILAND COMPACT NATIVE SOILS

TO 95% OF MAXIMUM DENSITY1

2

MIN 2'IN SMALLESTDIMENSION


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CORPORATION STOP

EXISTING WATERSERVICE (VARIES)

CURB STOP

STEEL POST MARKER, 5' LONG,PAINTED BLUE

2'

WATER SERVICE ABANDONMENT DETAIL

EXISTING WATER MAIN

TO WETLANDS DEMONSTRATIONPROGRAM AREA

NOT TO SCALE

EXISTING GROUND

LOCATED LOCATION OFCURB STOP AND ISOLATEDEXISTING WATER SERVICE

SEWER SERVICE ABANDONMENT DETAILNOT TO SCALE

CONCRETE PLUG COATED WITHTWO COATS OF WATERPROOFING

LOCATED AND DOCUMENTED LOCATIONOF SEWER SERVICE ABANDONMENT

EXISTING WETLAND DEMONSTRATIONPROGRAM AREA SEWER SERVICE

EXISTING SEWER MAIN

DISCONNECTED WATER SERVICELINE AND PLUGGED CURB STOP

24" MIN 8" MIN

48"

15" ROUND SECTION

CHAIN LINK FABRIC

SECTION10" ROUND

CORNERSECTION FOR12" ROUND

SECTION10" ROUND

10'-0"

10" ROUND SECTION

12" ROUND SECTION

STRETCHER BAR

LINE POST

FABRIC BAND

FABRIC BAND

OR PULL POSTGATE, END, CORNER

BRACE

12" ROUND SECTION

TRUSS ROD

10'-0"

BRACE

POSTCORNER

TOP RAIL

10" ROUND SECTION

BARBED SELVAGETWISTED AND

10'-0"

TENSION WIRE

AS SPECIFIED

LINE POST

TWISTED AND BARBED SELVAGE

10'-0"

10'-0"

TRUSS ROD

TOP RAIL

CHAIN LINK FABRIC

GATEAREA

(MAX) (MAX) (MAX)

(MAX)

(MAX)

36" (TYP)

8'

48"

CHAIN LINK FABRIC

8'

15" ROUND SECTION

12" ROUND SECTIONFOR GATE ANCHORS.

CHAIN LINK FENCE DETAILNOT TO SCALE

SINGLE PANEL DETAILNOT TO SCALE

DOUBLE GATE DETAILNOT TO SCALE

DOUBLE PANEL DETAILNOT TO SCALE

NOTES:

1. SEE THE SPECIFICATIONS FOR ADDITIONAL REQUIREMENTS ALLOWED WITHIN 6" OF THE PIPE.

2. INSTALL DOUBLE PANELS AT 300' MAXIMUM SPACING AND AT ALL FENCE CORNERS WITHDEFLECTION ANGLES GREATER THAN 10'.

3. PULL POST BRACING IS THE SAME AS CORNER BRACING.

4. A DROP BAR LOCKING DEVICE IS REQUIRED FOR ALL DOUBLE GATE INSTALLATIONS. THE DROPBAR MUST BE ABLE TO BE INSERTED INTO THE CONCRETE BLOCK AT LEAST SIX INCHES.

5. ALL CONCRETE IS CLASS "C" OR BETTER.



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LIST OF APPENDICES

(Provided in Electronic Format)

Appendix B Project Correspondence

Appendix B.1 Correspondence

Appendix B.2 Monthly Reports

Appendix B.3 Project and Contractor Logs

Appendix B.4 Meeting Minutes

Appendix C Project Data

Appendix C.1 Field Data

Appendix C.2 Submittals

Appendix C.3 Project Photographs

Appendix D Site-Specific Health and Safety Information

re: butte priority soils operable unit (bpsou) final...

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