residential building permit application packet · 2020-01-16 · note: a fee of $148.00 will be...

Residential Building Permit Application Packet Rev 1.16.20 Working together. Securing your safety. Protecting your investment.

Public Service Center 1300 Franklin St., Vancouver, WA 98660 564.397.2375, [email protected] www.clark.wa.gov/community-development

For other formats, contact the Clark County ADA Office Voice: 564.397.2322 Relay: 711 or 800.833.6388 Fax: 360.397.6165 [email protected]

All submittal items are required to be in this order: Residential Building Permit Application and Residential Building Permit Checklist Zero-Lot Line Townhomes – recorded covenant running with the land, if applicable Permit Center Requirements, see below Building Plan Requirements, see below Current owner’s recorded deed or sales history Copy of all prior approvals (such as Lot Determination, Wetland, etc.)

All items below require two (2) copies separated into two (2) packets Refer to the Building Permit Application Checklist for details required in each of the requirement sections below.

Permit Center Requirements Plot plans on no larger than 11” x 17” paper – see Plot Plan Checklist, see page 7 Residential Stormwater Plan Application and requirements Erosion Control Application and Plan

Building Plan Requirements Residential Plans Submittal Requirements, see page 9 Building plans – plans must be folded

o Engineered floor layout o Engineer’s detail pages o Large scale WSEC plan

Roof truss calculations and layout Engineer’s calculations Beam and joist size calculations Window schedule form Energy worksheet or Manual J Geo Tech Report, if applicable If home is over 3600 square feet, a letter from the water purveyor indicating flow and pressure adequate

to meet fire standards must be provided Wildland Urban Interface/Intermix (WUII) form

I certify that my submittal package contains the required information listed above and is accurate. If my application submittal package is not correct as listed above, I understand that my application will not be accepted

today and I will be required to re-apply when I have all of the required information.

Applicant signature Printed name Contact number

Note: A fee of $148.00 will be charged each time your application is considered incomplete after the first visit. Items listed above and checked will be required to be completed and approved prior to submittal of your building

application. This checklist is required to be submitted with your application packet. If the checklist is not available at time of submittal an additional fee of $148.00 will be charged.

https://www.clark.wa.gov/sites/default/files/dept/files/community-development/building/sw-application.pdf

https://www.clark.wa.gov/sites/all/files/community-development/building/erosion-control-plan-stormwater-with-log.pdf

https://www.clark.wa.gov/community-development/building#res-energy-code



https://www.clark.wa.gov/sites/default/files/dept/files/community-development/building/soil-inv-geotech-req.pdf

https://www.clark.wa.gov/sites/default/files/dept/files/community-development/building/wuii.pdf

of 11 PERMIT SERVICES Residential Building Permit Application Packet rev 1.16.20

Residential Building Permit Application

Property owner information Permit number:

Name: Email:

Mailing address:

Phone: Cell: Fax:

Contractor Applicant Contact person

Name: Email:

Mailing address:

General contractor’s license number:

Phone: Cell: Fax:

Certified Erosion Control Person: Phone:

CESCL Certification Number: Expiration Date:

Application type Proposed Type of heat

New single family residence One story Two story Electric

Residential addition Existing number of bedrooms: Gas

Detached garage/shop (finished? Y / N) Proposed number of bedrooms: Other:

House move Existing number of bathrooms: Fireplace

Other: Proposed number of bathrooms: Quantity: Type:

Additional permit needed Square footage

NHC permits include most mechanical and plumbing

Road approach for public roads Existing house:

Mechanical – circle items: fireplace, furnace, gas piping, woodstove, heat pump

Proposed new finished*:

Proposed new unfinished:

Plumbing – circle items: lawn sprinklers, water service, moving fixtures

Proposed new basement finished:

Proposed new basement unfinished:

Accessory dwelling unit Proposed new garage/shop:

Adult foster care for WABO Proposed new carport:

Guest house Proposed new deck:

Deck or patio cover / entry way Proposed new patio cover:

None of the above Proposed new entry ways:

WABO client area:

Total project valuation $ * Do not add new square footage to existing square footage of dwelling.

Building materials and labor only

Height of structure:

Length of driveway:


Project description including proposed overall footprint dimension and any decks, awnings, carports, etc.

Utilities Private well

Septic system Community well

Sewer, district: Public water, district:

Property location/address

Subdivision name, if applicable Lot number or parcel number

The undersigned hereby certifies that this application has been made with the consent of the lawful property owner(s) and that all information submitted with this application is complete and correct. False statements, errors, and/or omissions may be sufficient cause for denial or revocation of the permit. Applicant/Authorized Signature: ____________________________________________ Date: _________________________________________


Residential Building Permit Checklist

Parcel number Date

Address Staff

Permit number

This checklist is to assist you with the application process and is required to be submitted with your

building permit application.

Effective January 1, 2020, all applicable items checked below must be submitted and approved prior to

submittal of your building application. Please verify that all approved site plans match your proposed

site plan for construction of your proposed building.

One approved copy of all items checked below will be required at time of building application.

Environmental impacts Does the property have any of the following attributes? If yes, you may need to apply for separate permits.

Shoreline

SEPA o Pre-Application Conference is required

Forest Practice (tree removal) Wetland/Habitat

o Wetland/Habitat Inquiry Columbia River Gorge Scenic Area

Flood Plain o Flood Plain Inquiry

Historic Preservation Stormwater

o Subdivision as-builts o Requirement 2, this may be completed within the building review timeframe

o Requirements 1-5, this may be completed within the building review timeframe o Requirements 1-9

o Post Plan Geo Hazard (slopes, erosion hazard, hydric soils, landslide area or foundation more than 4’)

o Geo-Report or Geo-Assessment must be stamped by a Washington licensed engineer. This may be completed within the building review timeframe.

Who provides water to the property? Well – Clark County Public Health Water Waiver for new structures within an urban growth boundary– If public water is available within

750’ of the property and you cannot connect to public water. Clark Public Utilities City of ________________________


Who provides sewer/septic to the property? Septic – Clark County Public Health Sewer Waiver for new structures within an urban growth boundary – If public sewer is available within

300’ of the property and you cannot connect to public sewer. Clark Regional Waste Water District City of _______________________

Accessing directly onto a county road

Existing access Road Approach

o Road Modification

Accessing directly onto a state road Washington State Department of Transportation

Fire flow

If the structure is over 3600 sq. ft. and the property is on public water, a fire flow letter is required from your water purveyor.

If the addition is 60% larger than your existing home and the property is on public water, a fire flow letter is required from your water purveyor.

Is the lot a legal lot of record?

If the property in question is within a recorded plat and the boundaries of the lot have not changed, a lot determination or boundary line adjustment is not required. If the property in question is a tax lot, a lot determination or boundary line adjustment may be required. Lot Determination Boundary Line Adjustment

Address assignment

The address assignment is extremely important and this is how emergency services as well as others arrive at your location. If the property has not been assigned an address by Clark County Community Development, an application will be required. If the property has an existing address that needs a correction, an application will be required. Address Assigned on plat

Is a variance required? Setback Height

Does the property have any non-conforming uses?

Non-Conforming Use Do you plan on having an accessory dwelling unit?

Accessory Dwelling Unit – Rural / Urban o Detached o Attached

https://www.clark.wa.gov/sites/default/files/dept/files/community-development/land-use/accessory-dwelling-unit-RURAL.pdf

https://www.clark.wa.gov/sites/default/files/dept/files/community-development/land-use/accessory-dwelling-unit-URBAN.pdf


Manufactured home Additions onto your home that are not free-standing will require Washington State Department of Labor

and Industries approval prior to building permit application Homes dated 1976 or older will require Washington State Department of Labor and Industries approval

prior to building permit application Additional reviews that may be required but are not common:

BPA Easement FAA – Airport Zone Railroad Access Other easement: _________________________________________________

Parcel tags

Verify if the property has any parcel tags (such as Forest Practice, Hwy 99) ________________________________________________________________________________________________________

Existing structures located on property Buildings must be labeled with use and dimensions on plot plan Permitted structures

________________________________________________________________________________________________________

Un-permitted structures ________________________________________________________________________________________________________

Clark County Design Criteria Wind speed: 135 Ultimate Exposure: B

Frost depth: 12” Seismic zone: D1

Main Roof Snow Roof load: 25 PSF (min), no reduction

Ground snow: 30 PSF Soil: 1,500 PSF bearing


Residential Plot Plan Checklist Permit #__________________ Two (2) complete plot plans no larger than 11”x17” ( see attached example plot plan showing required

checklist items) *Leave a four-inch blank space on the page for county review stamp(s)

Scale Engineer’s scale is required (such as 1”=10’, 1”=20’, etc.)

Parcels over one (1) acre do not need to be drawn to scale as long as they are proportioned properly

Identify property features Lot and subdivision name and /or tax lot and parcel number North arrow

Property lines and dimensions Easements (size, type, and dimensions)

Access point/driveway (show width and length, distance to property line) o Road Approach: Y / N

o Is finished driveway greater than 15% grade? If yes, approval from your local fire chief is required Right of ways (width, centerline dimensions and street names) Staff: arterial r/w?

Bridges (if applicable) Physical attributes and buffers (wetlands, water, slopes, etc.) – available on Maps Online

Lot coverage

Identify proposed structures and features Dimension, footprint and roofline of proposed structure Elevations at four corners of structure and property corners – numerical values are required, do not show

contours Setback from closest point of structure to property lines, edge of all access easements, right of ways,

water marks/ways, features, and buffers Building envelopes, if shown on recorded plat (for geohazard setbacks, habitat buffers, etc.)

Identify existing structures and features Show and label all existing structures including use, dimensions and setbacks from property lines and

access easements, and distance between structures Forest Practice (FPA) permit may be required if any trees have recently been removed or will be removed

Identify services and systems Water lines and/or any well(s), show waterlines from house, well or street to dwelling

Sewer lines or septic tanks, drain fields and reserve drainfield, show sewer connection to dwelling

Plot plans must be legible or your application will NOT be accepted.

Example See attached plot plan for an example of a simple plot plan for subdivisions and lots less than one acre, no

environmental constraints, and no well/septic.

SCALE: 1” = 20”

Simple Plot Plan Example for subdivisions and lots < 1 acre, no environmental constraints, no well/septic

This key is for explanatory purposes only.Do not include a key on your plot plan.

Required items:1 Date2 Lot number, subdivision name, address, parcel number 3 Lot coverage4 North arrow5 Scale6 Property line and dimensions7 Easements, types and width8 Driveway length and width9 Right of Way10 Structure dimensions11 Elevations at all lot corners and structure corners12 Setbacks to closest point, measured perpendicular to property line 13 Water service14 Sewer service15 Distance to centerline of

Right-of-Way16 Centerline dimension

3

2

1

Huckleberry AcresLot 3612356 NE 97th StreetParcel #123456000Lot coverage: 32%House square footage = 3,215 sfLot square footage = 9,957 sf

3/11/2019

REV. 5.7.19

N

5

4

81.0’

83.7’

5’15’-6”

50’-0” OVERALL

15’-6”

15’-6”

66

’-0”

OV

ER

ALL

162.95’

162.80’

162.40’

162.05’

COVEREDCONCRETE PATIO

COVERED

ENTRY

WATER SERVICE TO HOUSE

WATER METERSANITARY LATERAL

DRIVEWAY

SIDEWALK

CLROW NE 97th ST

43

’-0”

20

-0”

162’

162.10’

163.15’

163.45’

GARAGE467 SF

GARAGE245 SF

LIVABLE1,846 SF

23

’-0”

32

’-8”

29

’-8”

10

9.2

6’

11

8.3

7’

CONCRETE PAD 10 SF

23

’-0”

ElevElev

Elev

Elev

Elev

Elev

Elev

Elev

16

15

1413

12

11

10

9

8

7

6

Eas

emen

t (t

ype)

11

23’-0”

13

’-0”

10’-0”

6’-0

”

20’-0”

25

’-0”

27’-0”

POST

County use only (3” x 4” space)


Residential Plans Submittal Requirements Building plans must conform to the 2015 International Residential Code (IRC) with Washington state

amendments and Washington state energy code compliance forms.

The applicant is required to meet all aspects of building, stormwater, environmental, and land use codes. This list

is only a guideline. Structural requirements are met either through a design by a structural engineer licensed in the state of Washington and/or through use of the prescriptive path as recognized under the IRC. Prescriptive

path details are available on www.clark.wa.gov/community-development and www.sww-icc.org. If additional items are required during preliminary submittal review or during plans examiner review, the applicant will be

notified and plans will be placed on HOLD until the additional documents are provided.

Applicant shall provide two (2) sets of the following:

Note: All applicable items must be included. Many details may be found on the SWW-ICC Website at sww-icc.org.

1. Two (2) complete sets of legible plans

Plans must be drawn to ¼” = 1’, showing conformance to applicable local and state building codes. Structural details and connections must be incorporated into the plans or on a separate full-sized sheet

attached to the plan with cross references between plan location and details. Engineer of record’s detail sheets shall be attached as required.

Garages must be oriented correctly on plans. Fireplaces, woodstoves, and inserts must be included in the scope of work and shown on plans.

Plans shall include each of the following as applicable.

2. Foundation Plan Show dimensions of footings, foundation walls, isolated footings and any spread footings for patio covers,

decks and interior point loads. Show all connection details including anchor bolts and hold-down locations.

Show sections as necessary to detail rebar placement, joist connection to walls, drainage/backfill, etc. Show foundation vents location and size in foundation or provide foundation ventilation calculation.

Where footings require more than 4’ of elevation change, the plans must be drawn to reflect actual grade, showing steps in foundation, as well as step footing details and retaining walls as necessary. Foundation

walls with more than 4’ of unbalanced backfill require engineering.

3. Floor plans Show dimensions, identify all rooms, identify all pertinent elements and systems, window sizes, door

locations and swing, location of smoke detectors, water heater, furnace, ventilation fans, plumbing fixtures, balconies and decks.

4. Cross section(s)

Show typical wall details including a complete load path, wall construction, and roof construction. Show details of all wall and roof sheathing, roofing, roof slope, ceiling height, siding material, footings and

foundation, retaining walls, stairs, fireplace construction, thermal insulation, etc. For decks and patio covers, provide footing design, connection details, and engineering, if applicable.

http://sww-icc.org/index.htm

http://sww-icc.org/index.htm


5. Exterior elevation views Provide all elevations (front, rear, and sides) for new construction; and a minimum of two (2) elevations

for additions and remodels. Exterior elevations must reflect the actual grade if the change in grade is greater than four feet at building envelope.

6. Wall bracing: prescriptive path OR engineered lateral analysis.

Prescriptive – Show brace panel sizes and locations on the floor plan and outline the applicable code requirements per IRC 602 as they apply to the specific structure. Provided details for panel nailing, hold

down types (anchor and bracket) and load path for girders/beams. Engineered – Provide site specific lateral engineering from a licensed design professional. Two (2) copies

of the calculations, plans and details must be provided. See item number 9 for more information.

7. Floor/roof framing Provide plans for each floor/roof assembly. These plans must show the type, size, spacing, bearing

locations and connection details for all members in the floor/roof assembly. For engineered products (like I-joists), the manufacturer’s layout is required.

For manufactured floor/roof trusses, the manufacturer’s layout is required along with site specific engineering.

8. Beam and joist sizes

Provide prescriptive beam and joist sizes by code reference or submit engineering calculations and detail (see #9 below).

9. Engineer’s calculations

Engineering shall be stamped by an engineer or architect licensed in Washington. Engineering shall be site specific using the current design criteria. Stamped engineering or architectural documents must have a

“wet” (original) signature on at least one copy. Provide two (2) copies of stamped calculations.

Provide two (2) copies of stamped plans. The engineer’s plans must show all applicable details and provide a complete load path.

10. Energy code requirements

Provide two (2) copies of the completed Washington State Energy Code Plan Sheet (minimum size is 11”x17”), Heating System Sizing Worksheet (or Manual J calculations) and Window Glazing Schedule. See

www.clark.wa.gov/community-development/building for fillable forms.

11. Geotechnical report, if applicable

Where required – A site specific geotechnical report addressing any mapped hazards, the use of special piers/anchors, and/or questionable soil types, shall be stamped by a registered design professional

licensed in Washington. See handout on geotechnical reports.

https://www.clark.wa.gov/sites/default/files/dept/files/community-development/building/res-design-criteria.pdf

https://www.clark.wa.gov/community-development/building

https://www.clark.wa.gov/sites/default/files/dept/files/community-development/building/soil-inv-geotech-req.pdf


Permit # _________________

Acknowledgement

I acknowledge that I have provided all the required plans and documents per the Residential Plans Submittal

Requirements. I understand these are the minimum building plan and permit submittal requirements.

NOTE: You will be subject to a minimum two-hour additional plan review fee if you did not supply all of the information as indicated above. The plans examiner may request additional plans and details during review.

Name (printed) Signature

Date

Check One: Owner Contractor Agent

Residential Stormwater Plan Application Rev 12.10.18 Working together. Securing your safety. Protecting your investment.

Public Service Center 1300 Franklin St., Vancouver, WA 98660 564.397.2375, [email protected] www.clark.wa.gov/community-development

For other formats, contact the Clark County ADA Office Voice: 564.397.2322 Relay: 711 or 800.833.6388 Fax: 564.397.6165

Applicant Information

Name: Date:

Phone Number: Email: Site Information

Project Address: Parcel Number: Project Impacts Fill in the following table to summarize the site disturbance and new or replaced hard surfaces planned for the site. Definitions are on page four.

Description/Surface Type Area (sf) *

A Total site area (1 acre = 43,560 sf) Total size of the lot/property For example, ½ acre lot: multiply .5 x 43,560 = 21,780

B New hard surface area

(Hard surface areas to be created with the project, see definition of hard surface)

Roofs/Buildings

Driveways

Other (patios, hard courts)

Total

C Replaced hard surface area

(See definition of replaced hard surface)

Driveway

Other (patios, hard courts)

Total

D Total new and replaced hard surface area

(Add totals of lines B and C)

E Native vegetation converted to pasture

F Vegetation (including pasture) converted to lawn/landscape

G Total area of land disturbing activity

(See definition of land disturbing activity)

TDA ID # _________. If the site includes more than one Threshold Discharge Area (TDA), copy this sheet, fill out the table above for each TDA, and submit one sheet for each TDA. Use project impact calculations on pages 5 and 6 to determine application requirements.

of 23 BUILDING SAFETY Residential Stormwater Application rev 12.10.18

Submittal requirements All applications and required materials must be submitted at the Clark County Permit Center.

Indicate which requirements below apply to this project.

☐ For projects on parcels in a recorded subdivision or short plat approved on or after January

1, 1994: The drainage details from the approved subdivision engineering plans for your specific lot are required. Submit two clean, readable sets. These plans may be available on Maps Online at gis.clark.wa.gov/mapsonline.

Note: Any deviation from the approved engineering plans may require a separate review with Public Works - Development Engineering. ☐ Page 1, 2, and 3 of this application form ☐ Two (2) Stormwater plans ☐ Two (2) Erosion Control site plans ☐ Soil Amendment plan and site plan, if required per engineering plans

☐ For minimum requirement #2 only: ☐ Page 1 and 2 of this application form ☐ Erosion Control Plan ☐ Two (2) Erosion Control site plans

☐ Project is for postholes / footings only:

Total soil/land disturbance < 2 cu yards: No plans or CESCL are required. ☐ Page 1 and 2 of this application form

☐ For minimum requirements #1-5:

☐ Residential project ☐ Commercial project

☐ All pages of this application form ☐ Two (2) Stormwater plans ☐ Applicable reports, as required ☐ Erosion Control Plan ☐ Two (2) Erosion Control site plans ☐ Soil Amendment plan and site plan

☐ For all minimum requirements #1-9: A Development Engineering Application is required. This

project will need to be designed by an engineer licensed in the state of Washington.


Stormwater Site Plan Checklist Show and label the following applicable details: ☐ North arrow

☐ Two (2) clean, readable site plans on 8.5 x 14 or 11 x 17. For properties one acre or less in size, site plan is required to be drawn to scale; for sites larger than one acre, a proportionate site plan is acceptable

☐ Contour lines at a minimum of 10’ intervals for the entire parcel, include elevation at building and property corners (available through gis.clark.wa.gov/mapsonline)

☐ Existing, new, and replaced hard surfaces with dimensions, include all structures, driveways, and easements

☐ Proposed BMP locations and details (plan view and profile view, as applicable)

☐ Crawlspace Low Point Drain and Detail

☐ Drainage patterns, flow paths, and lengths for associated BMPs and natural runoff

☐ Dimensions of BMPs for infiltration/dispersion systems, rain gardens, and permeable pavement

☐ Setback dimensions for all applicable BMPs from structures, property lines, easements, on-site septic systems, wells, slopes, and critical areas and associated buffers

☐ Limits of excavation and soil disturbance

☐ Boundaries of existing native landscape vs. new lawn and landscape/existing vegetation, fields, creeks, trees, etc.

☐ Show grades, dimensions, and direction of flow in all (existing and proposed) ditches, swales, culverts, and pipes

For all projects/permits that create ground disturbance, all sites shall have final stabilization of disturbed soils and a permanent vegetative cover established, or approved equivalent permanent stabilization measures, prior to final inspection approval. Final stabilization for lawn areas shall include visible growth and full coverage of lawn areas. Landscape areas and other hard surface areas shall be complete and fully cover all disturbed areas. The undersigned hereby certifies that this application has been made with the consent of the lawful property owner(s) and that all information submitted with this application is complete and correct. False statements, errors, and/or omissions may be sufficient cause for denial or revocation of the permit. ________________________________________________________________ Applicant/Authorized Signature Date


Definitions Hard Surface – An impervious surface (see definition), a permeable pavement, or a vegetated roof. Impervious Surface – A non-vegetated surface which either prevents or retards the entry of water into the soil below, causing water to run off the surface in greater quantities or at an increased rate compared to natural conditions prior to development. Common impervious surfaces include roofs, walkways, patios, driveways, parking lots, storage areas, gravel roads, and packed earthen materials. Replaced Hard Surface – For structures, the removal and replacement of hard surfaces down to the foundation. For other hard surfaces, the removal down to bare soil or base course and replacement. Pollution-generating Hard Surface (PGHS) – Hard surfaces that are significant source of pollutants in stormwater runoff, such as those subject to vehicular traffic and industrial activities. Surfaces include roads, driveways, parking areas, galvanized metal roofs, and areas that receive direct rainfall or run-on and which are used to store erodible stockpiles, wastes, or chemicals. Converted Vegetation (areas) – Surfaces on a project site where native vegetation, pasture, scrub/shrub, or unmaintained non-native vegetation (e.g., Himalayan blackberry, scotch broom) are converted to lawn or landscaped areas, or where native vegetation is converted to pasture. Land Disturbing Activity – Any activity that results in a change in the existing soil cover (both vegetated and non-vegetated) and/or the existing soil topography. Land disturbing activities include grading, filling, and excavation. Compaction associated with stabilization of structures and road construction shall also be considered a land disturbing activity. Landscape maintenance and gardening are not included. Native Vegetation – Plants that are indigenous to the coastal Pacific Northwest and which naturally could have occurred on the site. Examples include Douglas Fir, Western Hemlock, Western Red Cedar, Alder, Big-leaf Maple, and Vine Maple; shrubs such as willow, elderberry, salmonberry and salal; and plants such as sword fern, foam flower, and fireweed. Threshold Discharge Area – An on-site area draining to a single natural discharge location or multiple natural discharge locations that combine within one-quarter mile downstream (as determined by the shortest flow path), as shown in the illustration.


Figure 1.2: New Development Flow Chart Indicate the path used for determination.


Figure 1.3: Redevelopment Flow Chart Indicate the path used for determination, if applicable from the results on page five.


Project Thresholds Projects triggering only Minimum Requirements #1-5 shall either: 1. Use On-site Stormwater Management BMPs from List #1 (see page 12) for all surfaces

within each type of surface in List #1; or 2. Demonstrate compliance with the LID Performance Standard. Projects selecting this option

cannot use Rain Gardens. They may choose to use Bioretention BMPs as described in 2015 Clark County Stormwater Manual (CCSM), Book 1, Chapter 2 and Book 2 Chapter 2 to achieve the LID Performance Standard. Projects selecting this option must implement BMP T5.13, Post-Construction Soil Quality and Depth, if feasible.

Low Impact Development Performance Standard Stormwater discharge shall match developed discharge durations to pre-developed durations for the range of pre-developed discharge rates from 8 percent of the 2-year peak flow to 50 percent of the 2-year peak flow. Refer to Clark County Stormwater Manual Book 1, Section 1.5.7.3, Standard Flow Control Requirement of Minimum Requirement #7, information about the assignment of the pre-developed condition. Project sites that must also meet Minimum Requirement #7, Flow Control must also match flow durations between 8percent of the 2-year flow through the full 50-year flow.

Minimum Requirements Discussion and Narrative for Projects Meeting MRs 1-5 The applicant must demonstrate how five minimum requirements will be met. Minimum Requirements describe the minimum stormwater controls and technical specifications for the site. Generally, small projects must:

Demonstrate how the minimum requirements will be met using the Stormwater Site Plan and other required submittals (Minimum Requirement #1).

Control erosion and sedimentation during construction (Minimum Requirement #2). Prevent stormwater from coming into contact with pollutants (Minimum Requirement

#3). Preserve the natural drainage patterns on the site (Minimum Requirement #4). Capture and control runoff from the site’s new and replaced hard surfaces using practices

such as rain gardens, dispersion, or infiltration trenches and drywells (Minimum Requirement #5).

Minimum Requirements are discussed below. Minimum Requirement #1 — Preparation of a Stormwater Site Plan

All projects shall prepare and submit a Stormwater Site Plan (site plan) for review. The site plan will demonstrate how the project will comply with Clark County Code 40.386 and the CCSM for control of stormwater. The site plan will be reviewed for compliance and to ensure that stormwater best management practices (BMPs) are correct. A Stormwater Site Plan shall display site-appropriate development principles to retain native vegetation and minimize impervious surfaces to the extent feasible.


Minimum Requirement #2 — Erosion and Sediment Control during Construction All construction projects are responsible for preventing discharge of sediment and other pollutants from the site during construction. Instructions for documenting and complying with erosion and sediment control requirements are given in the Erosion Control Plan.

Minimum Requirement #3 — Source Control of Pollution

Development and redevelopment projects must use source control BMPs to prevent contamination of stormwater. Source control BMPs must be selected and designed in accordance with the CCSM, Book 3. Description Non-residential sites that will include any activities in the Commercial Site Activities list, below, must consult the CCSM, Book 3, and determine the structural and operational source control BMPs that are required for the site. Show any required structural source control BMPs on the site plan, and list any required operational source control BMPs in the “Documentation” section below. Commercial Site Activities Check any activity that will take place on the site after construction. ☐ Manufacturing

☐ Transportation and Communication Business

☐ Retail and Wholesale Business

☐ Service Business

☐ Public Agency

Documentation ☐ Consult the CCSM, Book 3, and list all required BMPs to be installed to provide source

control for activities checked above, or check ☐ N/A if no activities above are selected:

______________________________________________________________ Show how any required structural source control BMPs on the site plan.

Minimum Requirement #4 — Preserve Natural Drainage Systems and Outfalls Maintain natural and existing drainage patterns through the site and onto adjacent property as much as possible.

Minimum Requirement #5 — On-site Stormwater Management

Projects must use On-site Stormwater Management BMPs to disperse, infiltrate, and retain stormwater runoff from the site’s roofs, driveways, parking areas, patios, and landscaped areas to the extent feasible without causing flooding or erosion impacts. Description Stormwater generated from hard surfaces on the site must be infiltrated or dispersed into vegetation on the using BMPs such as rain gardens, infiltration trenches and drywells, and dispersion.


Existing Conditions Summary Describe the existing site conditions. If there are multiple choices, check all that apply. 1. Describe the existing site conditions.

☐ Forest ☐ Prairie ☐ Pasture

☐ Pavement ☐ Landscaping ☐ Brush

☐ Trees ☐ Other

2. Describe how surface water (stormwater) drainage flows across/from the site.

☐ Overland ☐ Gutter ☐ Catch Basin

☐ Ditch/Swale ☐ Storm Sewer Pipe ☐ Stream

☐ Other

3. Describe, discuss and identify the following for the project site:

Topography — is the site: ☐ Flat ☐ Rolling ☐ Steep

Natural and man-made drainage patterns (which direction does stormwater flow and

how):

Are there any known historical drainage problems such as flooding, erosion, etc.)?

Are sensitive and/or critical areas present on the site (check all that apply)? This information may be found on Clark County Maps Online at www.clark.wa.gov.

☐ Streams ☐ Lakes/Ponds ☐ Wetlands1

☐ Steep Slopes/Geohazard1 ☐ Floodplain ☐ Springs

☐ Habitat1 ☐ Critical Aquifer Recharge Area 1 If the site is on a critical area, Clark County may require additional information, engineering, or other permits.

Existing utilities

☐ Storm ☐ Water ☐ Sewer ☐ Other

Are fuel tanks present on the site? ☐ Yes ☐ No

Are groundwater wells present on the site and/or within 100 feet of the site? ☐ Yes ☐ No

Are septic systems present on the site and/or within 100 feet of the site? ☐ Yes ☐ No


Are there existing public and/or private easements on the project site?

☐ Yes ☐ No If Yes, provide Recording Number(s): _________________________________

Adjacent Areas Describe adjacent properties and roads. Attach a separate sheet, if necessary. 1. Check any adjacent areas that may be affected by site disturbance and describe below (check

all that apply):

☐ Streams2 ☐ Lakes ☐ Wetlands2

☐ Steep Slopes/Geohazards2 ☐ Residential Areas ☐ Roads

☐ Ditches, pipes, culverts ☐ Other

2 If the site is adjacent to a critical area, Clark County may require additional information, engineering, or other permits.

2. Describe how and where surface water enters the site from upstream properties:

3. Describe how and where surface water exits the site and the downstream drainage, including

flooding problems, if known:

Soils Assessment A soils assessment is needed to determine the site suitability for stormwater infiltration features required by state law. The soils report is used to meet on-site stormwater management requirements. For all sites, the Soils Assessment must include a soils description (item 1, below). Some sites also require infiltration rate testing (item 2, below) and a groundwater assessment (item 3, below). Sites where full dispersion (BMP T5.30A and BMP T5.30B) are used, do not need to complete soil infiltration testing. Obtain a Soils Assessment of the site performed by a qualified professional. Ask the qualified professional to fill out items 1 – 3, below, and attach a written report to this form. The professional will need to consult the CCSM, Book 1, Section 2.3. Qualified professionals include certified soil scientist, professional engineer, geologist, hydrogeologist or engineering geologist registered in the State of Washington or suitably trained persons working under the supervision of the above professionals. A licensed on-site sewage designer can be used to complete the soil description (item 1) and to conduct infiltration tests (item 2) but may not be used to complete the groundwater assessment (item 3), if required. 1. Soil Description

A soil description is required for all sites (available through gis.clark.wa.gov/mapsonline).


☐ Soils on the site are described by a qualified professional in accordance with CCSM, Book 1, Section 2.3.1.2, Soil Description

☐ A Soils Report is attached

Describe the soils on the site:

2. Infiltration Rate Testing

Infiltration rate testing is required for sites that are proposing to use rain gardens or permeable pavements to fulfill Minimum Requirement #5. ☐ Infiltration rate testing N/A ☐ Infiltration rate testing conducted by a qualified professional in accordance with CCSM,

Book 1, Section 2.3.1.4, Infiltration Rate ☐ Infiltration testing method, logs, results, and rates are attached or described in the Soils

Report. List the infiltration rate(s) found at each BMP location on the site:

3. Groundwater Assessment

A groundwater assessment is required if permeable pavement is proposed and the seasonal high groundwater elevation in the area is known to be less than five feet below the proposed surface. ☐ Groundwater assessment N/A ☐ Groundwater assessment conducted by a qualified professional in accordance with CCSM,

Book 1, Section 2.3.1.5, Groundwater Assessment ☐ Groundwater assessment attached or included with the Soils Report


Documentation Go through the selection process described below. For each surface to be constructed as part of the project, fill in the first BMP that is feasible using the selection processes. ☐ Lawn and Landscape Area will be installed or re-graded.

☐ BMP T5.13 Post Construction Soil Quality and Depth will be used. ☐ Roofs will be constructed.

BMP Selected for Roofs: __________________________________________ ☐ Other Hard Surfaces will be constructed (e.g. driveway, parking, patio, etc.).

BMP Selected for Other Hard Surfaces: ______________________________

Selection Project sites usually construct or create up to three types of surfaces that generate stormwater runoff – lawn and landscaped areas, roofs, and other hard surfaces (driveways, patios, parking, etc.). For each surface constructed or created as part of the project, select a BMP from a prioritized list of required BMPs below. Select the first BMP in the list that is not infeasible. Only one BMP for each surface is required. List #1 - Clark County Stormwater Manual, Book 1 Lawn and Landscaped Areas

1. Post Construction Soil Quality and Depth BMP T5.13 is required for all lawn and landscaped areas created or re-graded as part of the project.

Roofs Select the first BMP in the list that is not infeasible for each new roof on the site:

1. Full Dispersion BMP T5.30A and BMP T5.30B or Downspout Full Infiltration BMP T5.10A and BMP T5.10B

2. Rain Garden BMP T5.14A 3. Downspout Dispersion BMP T5.10C 4. Perforated Stub-out Connection BMP T5.10D

Other Hard Surfaces Select the first BMP in the list that is not infeasible for each new or replaced hard surface on the site:

1. Full Dispersion BMP T5.30A and BMP T5.30B 2. Either Rain Garden BMP T5.14A or Permeable Pavement BMP T5.15 3. Either Sheet Flow Dispersion BMP T5.12 or Concentrated Flow Dispersion BMP T5.11

Flow charts on the following pages illustrate the selection process.


BMP Selection Process for Roofs Indicate flow path used to determine BMP.

1. Full Dispersion – BMP

T5.30A or T5.30B – feasible?

2. Soils have USDA soils classification of

coarse sand to medium sand, loam or

cobbles and gravel?

Use Full Dispersion OR (optional) go to next

question Yes

No

3. Downspout Full Infiltration – BMP

T5.10A or T5.10B – feasible?

Use Downspout Full Infiltration Yes Yes

No

4. Answered Yes to Question 1 Use Full Dispersion

Yes

No

No

5. Lot suitable for infiltration?

6. Rain Garden – BMP T5.14A – feasible? Yes Yes

Use Rain Garden

No

7. Criteria for Downspout Dispersion

met? Yes Use Downspout

Dispersion

No

Use Perforated Stub-outs – BMP T5.10D


BMP Selection Process for Other Hard Surfaces Indicate flow path used to determine BMP.

Full Dispersion – BMP T5.30A or T5.30B –

feasible?

Lot suitable for infiltration?

Yes

No

Rain Garden – BMP T5.14A – feasible?

Use Rain Garden OR (optional) go to next

question Yes Yes

No

Permeable Pavement – BMP T5.15 –

feasible? Use Permeable Pavement

Yes

No

No

Is Rain Garden feasible (above)? Yes

Use Rain Garden

No

Dispersion – BMP T5.12 and T5.11 -

feasible? Yes

Use Sheet Flow Dispersion – BMP T5.12 – for flat or moderately sloped surfaces and Concentrated Flow Dispersion – BMP T5.11 – for concentrated

No

No BMP required for Other Hard Surfaces

Use Full Dispersion


Low Impact Development (LID) Feasibility Checklist for Roof Drainage

Instructions: Fill out this LID Feasibility Checklist for each roof and other hard surface to determine feasibility or infeasibility.

Step 1: Indicate which type(s) of surfaces will be present in Section 1.

Step 2: Consider feasibility criteria and setbacks in Section 2.

Section 1: Surfaces

☐ Roof ☐ Other Hard Surfaces

Section 2: Feasibility Criteria For each type of surface selected in Section 1, above, consider BMPs in the order indicated in the BMP selection process flow chart. Infeasibility must be ascertained using measured or mapped site-specific information, not by general knowledge. Some infeasibility criteria require evaluation by a qualified professional. For each question, place a mark in either the Yes or No column. For each No answer, move on to the subsequent question within the BMP. If a Yes answer is given, then the BMP is not feasible and is not required in accordance with Minimum Requirement #5. If No answers are given to all questions, then the BMP is feasible and must be used to meet Minimum Requirement #5. Infeasibility must be documented in writing using the LID Feasibility Checklist beginning on page 16.


ROOF DOWNSPOUT FULL INFILTRATION BMPs T5.10A and T5.10B Roof Feasibility Criteria and Setbacks YES NO Has a qualified professional determined that soils in the infiltration zone at the

location of the roof downspout infiltration BMP do not fall within USDA textural classes of coarse sands to medium sands, loam, or cobbles and gravels?

Is there less than 3 feet of permeable soil from the proposed finished ground elevation at the drywell or trench location to the seasonal high groundwater table?

Is there less than 1 foot of soil from the proposed bottom elevation of the roof downspout control to the groundwater elevation?

Is the proposed location on a slope of 25% (4:1) or greater and cannot reasonably be located elsewhere?

Is the proposed location less than 100 feet from a closed or active landfill and cannot reasonably be located elsewhere?

Is the proposed location less than 10 feet from any small on-site sewage disposal drainfield, including reserve areas and grey water reuse systems, and cannot reasonably be located elsewhere?

Is the proposed location less than 10 feet from an underground storage tank and its connecting pipes that is used to store petroleum products, chemicals, or liquid hazardous wastes in which 10% or more of the storage volume of the tank and connecting pipes is beneath the ground and cannot reasonably be located elsewhere?

Is the proposed location less than 100 feet upgradient of a septic system unless topography clearly prohibits subsurface flows from intersecting the drainfield and cannot reasonably be located elsewhere?

Is the proposed location less than 10 feet from any structure, property line, or sensitive area and cannot reasonably be located elsewhere?

Is the proposed location less than 50 feet from the top of any slope greater than 40% and cannot reasonably be located elsewhere? [Note: at the applicant's request, the Responsible Official may reduce this setback to 15 feet based on a geotechnical evaluation. If requested, submit a geotechnical report with this checklist for county review.]

Are there Competing Needs? If so, attach a narrative justifying the use of Competing Needs criteria.

Determination: Is full downspout infiltration feasible?


DOWNSPOUT DISPERSION BMP T5.10C Roof Setbacks YES NO Is the proposed location less than 10 feet from any sewage disposal drainfield, including

reserve areas and grey water reuse systems, and cannot reasonably be located elsewhere?

Is the proposed discharge location less than 100 feet upgradient of a septic system drainfield, unless site topography clearly prohibits subsurface flows from intersecting the drainfield and cannot reasonably be located elsewhere?

Is the proposed discharge point less than 10 feet from any structure or property line and cannot reasonably be located elsewhere?

Is the proposed discharge point less than 50 feet from the top of any slope greater than 15% and cannot reasonably be located elsewhere? [Note: at the applicant's request, the Responsible Official may reduce this setback to 15 feet based on a geotechnical evaluation. If requested, submit a geotechnical report with this checklist for County review.]

Are there Competing Needs (see Section 8 Preface)? If so, attach a narrative justifying the use of Competing Needs criteria.

Determination: Is downspout dispersion feasible?

FULL DISPERSION BMP T5.30A Roof Other Hard

Surfaces

Feasibility Criteria and Setbacks YES NO YES NO

Will the project protect and maintain less than 65% of the site in a forested native condition?

Does a professional geotechnical evaluation recommend dispersion not be used due to reasonable concerns about erosion, slope failure or down gradient flooding?

Is the only location available for the discharge less than 100 feet upgradient of a septic system?

Is the only area available for the required length of the BMP's flowpath on a slope greater than 20%

Is the only area available for the required length of the BMP's flowpath above an erosion hazard or toward a landslide hazard area?

Is the only area available to place the dispersion device (not the flowpath) located in a critical area or critical area buffer?

Is the only area available to place the dispersion device (not the flowpath) located on a slope greater than 20% or within 50 feet of a geohazard as defined in CCC 40.430?

Is the only area available to place the dispersion device or required flowpath less than 10 feet from any structure, property line, or sensitive area?


Determination: Is Full Dispersion into native vegetation feasible?


DISPERSION TO PASTURE OR CROPLAND BMP T5.30B Roof Other Hard

Surfaces

Applicability and Setbacks YES NO YES NO

Is the project site 22,000 square feet or less?

Will the project protect and maintain less than 75% of the site as pasture or cropland or be covered in more than 15% impervious surfaces?

Does use of the pasture or cropland for purposes other than plant growth (e.g. unpaved roads, equipment storage, animal pens, haystacks, wheel lines, campsites, trails, etc.) take up more than 10% of the area to be used for dispersion?

Does the site prohibit a minimum dispersion flow path through pasture or cropland of 300 feet?


Is the only location available for the discharge less than 100 feet upgradient of a septic system?

Is the only area available for the required length of the BMP's flowpath on a slope greater than 5%?



Is the only area available to place the dispersion device (not the flowpath) located on a slope greater than 20% or within 50 feet of a geohazard as defined in CCC 40.430?

Is the only area available to place the dispersion device or required flowpath less than 10 feet from any structure, property line, or sensitive area?

Are crops other than grass, grain, row crops (including berries, nursery stock, and orchards) grown in the proposed flowpath?

Is the pasture/cropland under different ownership than the project site?

If the crop or pasture land is predominantly covered in soils with an infiltration rate greater than 4 inches per hour, was the pasture or cropland cleared after November 2009?

Is there less than 3 feet between the surface elevation along the dispersion flowpath and the average annual maximum groundwater elevation?


Determination: Is full dispersion to cropland feasible?


SHEET FLOW DISPERSION BMP T5.12 and CONCENTRATED FLOW DISPERSION BMP T5.11 Roof

Other Hard Surfaces

Feasibility Criteria YES NO YES NO


Is the only location available for the discharge location less than 100 feet upgradient of a septic system drainfield on the site?

Is the only area available for the required length of the BMP's flowpath on a slope greater than 20%



Is the only area available to place the dispersion device (not the flowpath) located on a slope greater than 20% or within 50 feet of a geohazard as defined by CCC 40.430?

Is the only area available for the BMP less than 10 feet from any structure, property line, or sensitive area?


Determination: Is this BMP feasible?


RAIN GARDEN BMP T5.14A Roof Other Hard

Surfaces

Infeasibility Criteria and Setbacks YES NO YES NO

Has the Responsible Official determined that the BMP is not compatible with surrounding drainage systems?

Is the land for the BMP within an area designated as an erosion hazard or landslide hazard by the geotechnical report or county critical areas mapping?

Can the site not reasonably be designed to locate the BMP on slopes less than 8%?

On properties with known soil or groundwater contamination (typically federal Superfund sites or state cleanup sites under the Model Toxics Control Act (MTCA)) and any of the following criteria:

Is the proposed BMP within 100 feet of an area known to have deep soil contamination?

Is the site is in an area where groundwater modeling indicates infiltration will likely increase or change the direction of the migration of pollutants in groundwater?

Is the proposed BMP located in an area where surface soils have been found to be contaminated, and contaminated soils are still in place within 10 horizontal feet of the infiltration area?

[End soil / groundwater contamination sub-list.]

Is the seasonal high water table, bedrock or other impervious layer one foot or less below the rain garden?

Does field testing indicate that soils have a measured (a.k.a. initial) native soil coefficient of permeability less than 0.3 inches per hour?

Is the BMP less than 50 feet from the top of slopes greater than 20% and with more than 10 feet of vertical relief and cannot reasonably be located elsewhere?

Is the BMP less than 100 feet from a drinking water well or a spring used for drinking water and cannot reasonably be located elsewhere?

Is the BMP less than 10 feet from any small on-site sewage disposal drain field, including reserve areas, and grey water reuse systems and cannot reasonably be located elsewhere? For setbacks from a “large on-site sewage disposal system,” see Chapter 246-272B WAC.

Is the BMP less than 10 feet from an underground storage tank and its connecting pipes that is used to store petroleum products, chemicals, or liquid hazardouswastes?

Is the BMP less than 100 feet from an underground storage tank and its connecting pipes that is used to store petroleum products, chemicals, or liquid hazardous wastes?


The following require professional technical evaluation.

Does a professional geotechnical evaluation recommend infiltration not be used due to reasonable concerns about erosion, slope failure or down gradient flooding?

Questions continue on next page


Does the site have groundwater that drains into an erosion hazard or landslide hazard area?

Is the only area available for siting the BMP threatening the safety or reliability of pre-existing underground utilities, pre-existing underground storage tanks, pre-existing structures and basements, or pre-existing road or parking lot surfaces?

Would infiltrating water threaten existing below grade basements?

Would infiltrating water threaten shoreline structures such as bulkheads?

Is the only area available for siting the BMP one that does not allow for a safe overflow pathway to existing drainage system or natural drainage way?

Is the site a redevelopment project that lacks usable space?

Determination: Is this BMP feasible?


PERMEABLE PAVEMENT BMP T5.15 Other Hard

Surfaces

Feasibility Criteria and Setbacks YES NO

Is the area for permeable pavement designated as an erosion hazard or landslide hazard?

Can the site not reasonably be designed to have a porous asphalt surface at less than 5% slope, or a pervious concrete surface at less than 10% slope, or a permeable interlocking concrete pavement surface (where appropriate) at less than 12% slope, or a grid system at less than the manufacturer's recommended maximum slope limit (generally between 6% to 12%)?

Would seasonal high groundwater or an underlying impermeable/low permeable layer create saturated conditions within 1 foot of the bottom of the lowest gravel base course?

Are underlying soils unsuitable for supporting traffic loads when saturated? (Soils meeting a California Bearing Ratio of 5% are considered suitable for residential access roads.)

Is measured coefficient of permeability in the area for permeable pavement less than 0.3 inches per hour?

Is the area for permeable pavement less than 50 feet from the top of a slope greater than 20% with more than 10 feet of vertical relief?

Is the area for permeable pavement less than 100 feet from an active or closed landfill?

Is the area for permeable pavement less than 100 feet from a drinking water well or a spring used for drinking water?

Is the area for permeable pavement less than 10 feet from on-site sewage drainage?

Is the area to be paved less than 10 feet from an underground storage tank and its connecting pipes that is used to store petroleum products, chemicals, or liquid hazardous?


The following require professional technical evaluation.

Does a professional geotechnical evaluation recommend infiltration not be used due to reasonable concerns about erosion, slope failure or down gradient flooding?

Does the site have groundwater that drains into an erosion hazard or landslide hazard area?

Would infiltrating and ponded water below new permeable pavement area compromise adjacent impervious pavement?

Is the only area available for siting the BMP threatening the safety or reliability of pre-existing underground utilities, pre-existing underground storage tanks, pre-existing structures and basements, or pre-existing road or parking lot surfaces?

Questions continue on next page


Would infiltrating water threaten existing below grade basements?

Is the area for permeable pavement downslope of steep, erosion prone areas that are likely to deliver sediment?

Is the area for permeable pavement over fill soils that can become unstable when saturated?

Is the area for permeable pavement on excessively steep slopes and would the water within the aggregate base layer or at the sub-grade surface be uncontrollable by detention structures and therefore may cause erosion and structural failure, or would surface runoff velocities preclude adequate infiltration at the pavement surface?

Would installation of permeable pavement threaten the safety or reliability of pre-existing underground utilities, pre-existing underground storage tanks, or pre-existing road sub-grades?

Determination: Is permeable pavement feasible?

Fire separation requirements for attached or detached buildings on a residential lot

Revised 10/5/17

Community Development 1300 Franklin Street, Vancouver, WA 98660 Phone: (360) 397-2375 Fax: (360) 397-2011 www.clark.wa.gov/community-development

For an alternate format, contact the Clark County ADA Compliance Office. Phone: (360) 397-2322 Relay: 711 or (800) 833-6384 E-mail: [email protected]

No separation is required between residential structures when located on the same parcel. Residential structures with less than 6 feet between them, if not protected from the assumed property line as required by code, and with a combined square footage of 3,600 square feet or more, will require a Fire Marshal review. Detached or attached garages separated less than 6 feet apart, shall be protected from any residential wall not perpendicular to the garage wall by not less than ½ inch gypsum wallboard applied to the garage side. Habitable rooms above shall be separated by not less than 5/8 inch Type X gypsum wall board. Where the separation is a floor-ceiling assembly the walls supporting the separation shall be protected on the garage side by not less than ½ gypsum wallboard. Openings other than doors are not allowed with separation distance less than 6 feet. Openings for doors in walls not perpendicular, with less than 6 foot of separation distance, shall be protected by a solid wood door not less than 1 3/8 inch in thickness, solid or honeycomb steel doors not less than 1 3/8 inches thick, or 20-minute fire-rated doors. Garages from 1,000 square feet to 3,000 square feet require an 8 foot fire separation distance between the garage and residence. Attached enclosed breezeways shall be protected on the garage side with not less than ½ inch gypsum wall board, sealing off the enclosed area in line with the garage wall. Open breezeways with no concealed spaces need not be protected. Carports not open on at least two sides shall be considered garages and shall comply with the provisions for garages. A residential garage is limited to 3,000 square feet which is classified as a U occupancy by the building code. When the garage is over 3,000 square feet it must be classified as a different occupancy and meet the commercial fire flow requirements per the Fire Code. A garage can be divided into areas less than 3,000 square feet by installing a two-hour fire wall and be considered two separate buildings. Fire separation distance (distance from structure to property line) for a garage of 1,000 square feet or less is 3 feet. Garages of 1,000 square feet to 3,000 square feet require a 5 foot separation distance. Fire separation distance for a residence is 3 feet. No openings are allowed for any exterior wall within the required separation distance. Exterior walls within the fire separation distance shall have not less than one hour fire resistive rating with exposure from both sides. Projections shall not extend to a point closer than 2 feet from the property line. Detached garages accessory to a dwelling, less than 3 ft from the property line, may have roof eave overhangs not exceeding 4-inches into the 2’ setback. Projections shall not extend over the lot line. Projections extending into the fire separation distance shall not have less than one hour fire-resistive construction on the underside.

Wildland Urban Interface/Intermix Area Rev 5.17.17

Working together. Securing your safety. Protecting your investment.

Public Service Center 1300 Franklin St., Vancouver, WA 98660 564.397.2375 [email protected] www.clark.wa.gov/community-development

For other formats, contact the Clark County ADA Office Voice: 564.397.2322 Relay: 711 or 800.833.6388 Fax: 360.397.6165 Email: [email protected]

To be filled out by applicant / owner

1. Is the property in a fire district? (See a Permit Tech for a Property Fact Sheet from GIS) ___ Yes

___ No. Increase defensible space by 25 percent AND increase fire flow requirements to 625 GPM (gallons per minute).

2. Is the private driveway greater than 150 feet in length? ___ Yes. Provide a 12’ minimum width road with overhead clearance of 13’6” extending to within 50 feet of all

buildings or structures. ___ No

3. Is the private driveway in excess of 300 feet in length? ___ Yes. Provide an approved turnaround with a 12’ minimum width road and overhead clearance of 13’6”

extending to within 50 feet of all buildings or structures with a turnaround at the end. ___ No

4. Are there turnarounds every 500 feet? ___ Yes. Provide an approved turnaround every 500 feet and at the end.

___ No

5. Is there a bridge or culvert?

___ Yes. Contact the Fire Marshal’s Office at 564.397.2186 or [email protected]. ___ No

6. Is this a Mobile Home? ___ Yes. Skirting is required, at minimum ½” plywood.

___ No

7. Are your minimum setbacks to property line 30 feet?

___ Yes ___ No. Revise the plot plan to reflect a minimum of 30 feet to property line.

8. Is roof slope greater than 3:12? ___ Yes

___ No. Non-combustible roofing is required.

9. Is fire flow of 500 GPM (625 outside of a fire district) available within 1000 feet?

___Yes ___No. Choose an alternate method of material or extend water system. (See options on next page).

of 2 Building Safety Wildland Urban Interface/Intermix Area rev 5.17.17

Choose from the following options:

Alternate method or material submitted to the Fire Marshal for review.

OR

Credits applied toward GPM requirement:

Select applicable items to add up to 500 GPM credits (or 625 GPM outside of a fire district).

Annex to a fire district 125 GPM credit

50% increase in defensible space 125 GPM credit

All exposed vertical surfaces are non-combustible 125 GPM credit

Provide non-combustible roofing 250 GPM credit

Fire district has a tanker certification 250 GPM credit

100% increase in defensible space 250 GPM credit

Residential sprinkler system 250 GPM credit

General Requirements – applied to all buildings and structures within a WUII area • No building shall be located within 30 feet of the property line.

• Clear all on-site combustible vegetation and debris.

• No dead wood, brush, or grasses over 4 inches within 30 feet of a building.

• No portion of any conifer trees shall be located within 15 feet of the farthest projection of a building roofline or horizontal combustible surface.

• Trees within 30 feet of a building shall be limbed to a height not less than 15 feet.

• The distance requirements of the above requirements shall be increased by 25 percent for any development or construction outside of an organized fire department or fire protection district.

• The underside of exposed horizontal combustible surfaces, such as decks, balconies, or similar projections, shall be completely enclosed with nonporous skirting consisting of metal, ½” plywood, or other pre-approved materials, whenever the height of the projection is 30 inches or less above the ground

level.

• Factory-built or masonry chimney outlets shall not be located within 15 feet of obstructions, other buildings, vegetation, or other combustible material.

• Class “C” or better roofing is required.

residential building permit application packet · 2020-01-16 · note: a fee of $148.00 will be...

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