SWPPP_WA_FS_ERFO_2016(1)20(4)Snoqualmie_Repairs.pdf

Stormwater Pollution Prevention Plan

SWPPP

For:

Snoqualmie Repairs 2016

WA_FS_ERFO_2016(1)-20(4)

King County, State

Federal Highway Administration, Western Federal Lands Highway Division

Project Engineer: _________ _

General Contractor: ---------

Table of Contents

Table of Contents

SWPPP/ESCP TABS

TAB 1: SWPPP/ESCP Narrative

TAB 2: NPDES Permit (Construction General Permit or Corresponding State Permit)

TAB 3: NOi, EPA/State Acknowledgement, Other Applicable EPA/State Correspondence

TAB 4: Delegation of Authority

TABS: Maps

TAB 6: Erosion/Sediment Control Plan Sheets (plan set and BMP typical details)

TAB 7: Permanent Stabilization and Revegetation Plan(plan sets and details)

TAB 8: SWPPP Amendment Log

TAB 9: Erosion/Sediment Control Inspection Reports and Requirements

TAB 10: Corrective Action Log

TAB 11: Water Quality Monitoring, Reporting Requirements, and Reports

TAB 12: Training Log

TAB 13: Waste and/or Borrow Site Information

TAB 14: Grading and Stabilization.Log

TAB 15: Hazardous Spill Plan

TAB 16: Other Applicable Permits(§ 404, § 401, Oregon Remove-Fill Permit)

TAB 17: NPDES Quality Assurance Checklist

TAB 18: NPDES Notice of Termination (NOT)

Tab 1 iONTRACTOR:

Complete SWPPP narrative in accordance with contract 107.0lA(b).

Revise SWPPP narrative as needed throughout construction in accordance with contract 107.0lA(f)

ALASKA, IDAHO AND WASHINGTON PROJECTS ONLY:

SWPPP narrative must be signed by General Contractor's responsible corporate officer as defined in CGP 1.11.2.

File approved SWPPP narrative in Tab 1.

Stormwater Pollution Prevention

For Construction Activities at:

Project Name: Snoqualmie Emergency Repairs 2016, WAFS ERFO 2016(1)-20(4)

(SWPPP)

Project Site Location: Forest Service Road (FSR) 52-Mile Post (MP) 6.1, FSR 57 - MP 23.03, FSR 5640 - MP 0.04, FSR 9035 -MP 0.8, FSR 90000219-MP 0.132

City, County, State, Zip Code: Mount Baker-Snoqualmie National Forest, King County, WA, 98045

SWPPP Prepared for:

Organization Name:

Address:

Telephone Number:

SWPPP Prepared by:

Name, Title:

Company/Organization:

Address:

Telephone Number:

Federal Highway Administration (FHW A), Western Federal Lands Highway Division (WFLHD)

610 East Fifth Street

Vancouver, WA 98661-3801

360-619-7700

Jennifer Chariarse

FHWA, WFLHD

610 E. 5th Street, Vancouver, WA 98661

360-619-7700, ext. 7621

SWPPP Preparation Date: 6/14/2018

Estimated Construction Start Date: April 1, 2019 Estimated Construction Completion Date: September 20, 2019

Estimated Revegetation Start Date: September 15, 2019 Estimated Revegetation Completion Date: September 20, 2019

TAB 1:

TAB2:

TAB3:

TAB4:

TABS:

TAB6:

TAB7:

TABS:

TAB9:

TAB 10:

TAB 11:

TAB 12:

TAB 13:

TAB 14:

TAB 15:

TAB 16:

TAB 17:

TAB 18:

SWPPP TABs (SWPPP Inclusions)

SWPPP/ESCP Narrative

NPDES Permit (Construction General Permit or Corresponding State Permit)

NOI, EPA/State Acknowledgement, Other Applicable EPA/State Correspondence

Delegation of Authority

Maps

Erosion/Sediment Control Plan Sheets (plan set and BMP typical details)

Revegetation Plan (if applicable)

SWPPP Amendment Log

Inspection Reports

Corrective Action Log

Water Quality Monitoring, Reporting Requirements, and Reports (if applicable)

Training/Certification Log

Government-Selected Waste, Borrow, Staging Sites

Grading and Stabilization Log

Hazardous Spill Plan or SPCC

Threatened and Endangered Species and Historic Preservation (Section 106) Documentation

NPDES Quality Assurance Checklist

NPDES Notice of Termination (NOT}

1.

SWPPP/ESCP NARRATIVE

Table of Contents

STORMW ATER POLLUTION PREVENTION PLAN (SWPPP)

SECTION 1: RESPONSIBLE PARTIES/CONTACT INFORMATION

1.1 Operator(s): ·······························································································································~····1

1.2 Construction Site SWPPP Contact(s):

1.3 SWPPP Prepared by:

1.4 NPDES Stormwater Permit

1.5 SWPPP Administrator

1.6 Permitting Authority for FHW A/WFLHD Projects

SECTION 2: PROJECT INFORMATION

2.1 Project Name and Location

2.2 Project Site Characteristics

SECTION 3: NATURE OF CONSTRUCTION ACTIVITY

3.1 General Description of Project and Scope of Work:

3.2 Sequence and Estimated Dates of Construction Activities

3.3 Potential Sources of Pollutants

SECTION 4: SITE MAPS

SECTION 5: DISCHARGES

5.1 Allowable Non-Stormwater Discharges

5.2 Receiving Waters:

5.3 Water Quality Monitoring Requirements

SECTION 6: COMPLIANCE WITH OTHER APPLICABLE REQUIREMENTS ......•.••• 18

6.1 Endangered Species Protection

6.2 Historic Preservation

6.3 Safe Drinking Water Act Underground Injection Control Requirements

SECTION 7: EROSION AND SEDIMENT CONTROLS

7 .1 Natural Buffers or Equivalent Sediment Controls (Required for EPA CGP states only - ID, WA)21

7.2 Perimeter Controls

[i]

7.3

7.4

7.5

7.6

7.7

7.8

7.9

Sediment· Trac~-Out .....•.................••...•......••..................•..........•....•.....•..•.......•......•.•..•....•

Stockpiled Soil or Other Erodible Materials

Minimize Dust .......................•..........•............•.••.•.•....•.•..........•......•.•...............................•...••..•

Minimize Disturbance of Steep Slopes ..••......•..•....................•......•.....•..........•.............•...•.•

Topsoil Conservation ......•........................................................................................•..........•.......• 25

Minimize Soil Compaction •................................•..................•..............••.....•......................•

Storm Drain Inlets and Culvert Inlets

7.10 Constructed Stormwater Conveyance Channels and Culvert Outlets

7.11 Sediment Basins ........................................•.•..•.••...................•.................•.••.................•

7 .12 Chemical Treatment •.•..................•........................................•.............................•.•....................• 27

7.13 Dewatering Pfactices ..................•...•....•.•........•...•.•.....•.......................................................••.....•.. 28

7.14 Erosion Control and Stabilization

7 .15 Removal of BMPs ..........................................•..•......................•....•.........•..•..•

7.16 Post Construction Measures ..•...•.................................•......................................................•

SECTION 8: OPERATIONAL CONTROLS/GOOD HOUSEKEEPING MEASURES

8.1

8.2

8.3

8.4

8.5

8.6

Hazardous Spill Plan .......•.......................•......•................................•......•..•.........................•

Spills/Releases in Excess of Reportable Quantities

EquipmentN ehicle Fueling and Maintenance Practices

EquipmentNehicle Washing ...........•............................•...•.•......•....•.........•..........•.•

Material Handling and Waste Management

Designate Concrete Washout Areas

SECTION 9: INSPECTIONS ....•.....•.•..........•..•..•....•..........•....•....••••...•....•.••...............•.....••

9.1 Inspection Frequency .....•...•.....................•....•.•..•.................•......•..•.....•.......••.........•...........•

9.2 Corrective Actions ...........•.......................................•...........................................•

SECTION 10:. DELEGATIONS OF AUTHORITY

SECTION 11: STAFF TRAINING •.......•....•..•.•.......•.•...........••.........•......................................• 36

SECTION 12: CERTIFICATION AND NOTIFICATION

[ii]

Section 1: Parties/Contact

1.1 Operator(s):

Organization Name:

Address:

Telephone Number:

Contractor and PE

FHW A, Western Federal Lands Highway Division (WFLHD 610 East Fifth Street

,Vancouver, WA 98661-3801 360-619-7700

Note: Fill in all incomplete information following contract award date and prior to start of construction

(AK, ID, WA projects only) General Contractor Name:

Address:

Telephone Number:

1.2 Construction Site SWPPP Contact(s):

FHW A Contact Name:

Title:

Address:

Telephone Number:

General Contractor, Company:

(complete for all States) Erosion Control Supervisor Name:

( complete for all States) Address:

Telephone Number:

Project Engineer

1.3 SWPPP Prepared by:

Organization/Company:

Name, Title:

Address:

Telephone Number:

Email:

Jennifer Chariarse, Senior Environmental Technical Specialist

610 E. 5th Street, Vancouver, WA 98661

360-619-7700, ext. 7621 jennifer.chariarse@dot.gov

1.4 NPDES Stormwater Permit

The Applicable EPA/State NPDES Stormwater Permit is located in TAB 2. The Project NOI and EPA/State Acknowledgement with NPDES Tracking Number is located in TAB 3.

1.5 SWPPP Administrator

The General Contractor (section 1.2) is responsible for maintaining the project SWPPP of Record. The General Contractor will provide a qualified Erosion Control Supervisor, who is responsible for managing the installation, maintenance, inspection, and reporting for erosion and sediment control measures, shall maintain and update the project SWPPP of Record and prepare all documentation required by the project NPDES stormwater permit and SWPPP.

The Erosion Control Supervisor (ECS) is identified in section 1.2 and his/her qualifications are documented in TAB 12.

The FHW A/WFLHD Project Engineer (PE) is the duly authorized representative of the FHW A for the purpose of overseeing compliance with the NPDES stormwater permit and SWPPP at the construction site. See Delegation of Authority TAB 4.

All SWPPP documentation, revisions/updates, and reports will be approved/signed by both the General Contractor's ECS and the FHWA PE.

1.6 Permitting Authority for FHW A/WFLHD Projects

Delivery Confirmation documentationofthe NOI is located in TAB 3.

The applicable EPA/State NPDES permit is located in TAB 2

Idaho and Washington, Environmental Protection Agency EPA Region I 0

State Permittinl.! Authoritv Washington • WDE is permitting authority for most discharges within the state EXCEPT for:

• EPA is permitting authority for Federal Operators and Indian Country lands within the state

The NOI for projects in Idaho, Washington, Denali NP and Metlakatla Indian Reservation can be filed electronically at The EPA website.

[2]

Section 2: Project Information

2.1 Project Name and Location

This basic site information is used to file for National Pollutant Discharge Elimination System (NPDES) permit coverage. Permit coverage is obtained by filing the Notice of Intent (NOI) after the SWPPP is complete.

Project Name: Snoqualmie Emergency Repairs 2016, WAFS ERFO 2016(1)-20(4)

Project Site Location: Forest Service Road (FSR) 52-Mile Post (MP) 6.1, FSR 57 - MP 23.03, FSR 5640 - MP 0.04, FSR 9035 -MP 0.8, FSR 90000219-MP 0.132

City, County, State, Zip Code: Mount Baker-Snoqualmie National Forest, King County, WA, 98045

Latitude, Longitude:

FSR 52 - MP 6.1: 47.193567, -121.403256

FSR 57 -MP 23.03: 47.652789, -121.56896

FSR 5640-MP 0.04: 47.556336, -121.5365

FSR 9035 -MP 0.8: 47.39505, -121.46920

FSR 90000219-MP 0.132: 47.39019, -121.39033

*The method used for determining latitude/longitude was: Other Website Google Earth Pro

FSR 52 - MP 6.1:

Township: 20N

Range: llE

Section: 27

FSR 57 - MP 23.03:

Township: 25N

Range: lOE

Section: 18

FSR 5640 - MP 0.04:

Township: 24N

Range: lOE

Section: 16

FSR 9035 - MP 0.8:

Township: 22N

Range: lOE

Section: 13

[3]

FSR 90000219-MP 0.132:

Township: 22N

Range: l lE

Section: 15

Is the project located in Indian country? No

Are you applying for permit coverage as a "federal operator?" Yes

The project Does Not discharge stormwater into a Municipal Separate Storm Sewer System?

2.2 Project Site Characteristics

The undeveloped site and features of the land that are incorporated into the final soil Erosion and Sediment Control plan sheets (TAB 6), as well as natural resources that should be protected are described below:

Vegetation, trees, and sensitive areas, such as stream buffers, wetlands, highly erodible soils, and steep slopes at the site include:

Types: The general setting is mountainous and forested, with numerous perennial and intermittent streams dissecting the hillslopes. The primary waterbodies in the project area are Green River, Lennox Creek, Taylor River, South Fork Snoqualmie River, and Coal Creek.

Also, see TAB 6

Stormwater currently drains from the site in the following manner:

Site specific. Stormwater presently drains from the site by means of soil infiltration, sheetflow, and concentrated flows into adjacent gullies and ditches.

Also, see TAB 6

The location of discharge points or areas:

Culvert outlets, roadside ditches that drain into surface waters, and adjacent vegetated buffers. ·

Also see TAB 6

The location of all waters, including wetlands, are shown on the site map located in

TABs 5 and 6.

[4]

Critical slopes and slope lengths include:

Locations: WSDOT's Unstable Slopes database shows none within the vicinity.

Soil type(s) of highly erodible soils and the soils' infiltration capacity are identified as: 1

FSR 52-MP 6.1:

Snoqualmie Pass Area, Washington (Parts of King and Pierce Counties) (W A634)

Map Unit .

Symbol Map UmtName

Rating

237 Skykomish gravelly .05 sandy loam, 0 to 30 percent slopes

FSR 57 - MP 23.03:

Acres in

AOI

0.9

Percent ofAOI

100%

Snoqualmie Pass Area, Washington (Parts of King and Pierce Counties) (WA634)

Map Unit .

Symbol Map Umt Name

Rating

237 Skykomish gravelly .05 sandy loam, 0 to 30 percent slopes

FSR 5640 - MP 0.04:

Acres in Percent AOI of AOI

0.9 100%

Snoqualmie Pass Area, Washington (Parts of King and Pierce Counties) (W A634)

Map Unit Map Unit

Name Symbol

70 Grotto gravelly loamy sand, 0 to 8 percent slopes

1 NRCS Web Soil Survey.

Rating Acres in AOI

.10 0.5

[5]

Percent ofAOI

100%

FSR 9035 - MP 0.8:

Snoqualmie Pass Area, Washington (Parts of King and Pierce Counties) (WA634)

Map Map Unit Rating Acres in Percent of Unit Name AOI AOI Symbol

Grotto .10 gravelly

70 loamy sand, 0 0.6 100% to 8 percent slopes

FSR 90000219 - MP 0.132:

There is no USDA soil erosion factor data available for this site of the project.

Any past soil contamination at the site is identified as:

Unknown.

The following natural features, including trees, streams, wetlands, slopes and other features to be protected includes:

Also see TAB 6

Protected Natural Features:

FSR 52 - MP 6.1: Green River

FSR 57 -MP 23.03: Lennox Creek FSR 5640 - MP 0.04: Taylor River

FSR 9035 - MP 0.8: South Fork Snoqualmie River FSR 90000219-MP 0.132: Coal Creek

Measures to protect these features:

Project will utilize erosion and sediment control BMPs to avoid discharging sediment-laden, construction stormwater runoff into the streams. In addition, in water work will be done in the dry (where identified) to maintain water quality standards.

Mean Annual Precipitation at the Project Site2

FSR 52-MP 6.1: 75.35 inches

2 NRCS Annual Climate Data

[6]

FSR 57 - MP 23.03 & FSR 5640 - MP 0.04: 156.53 inches FSR 9035 -MP 0.8 & FSR 90000219-MP 0.132: 63.24 inches

The frequency, intensity, and duration of rainfall for the project site, which are the principal factors influencing erosion from a construction site, are described as, The 2-year, 24-hour storm event:3

FSR 52-MP 6.1: 3.5 inches/day

FSR 57 - MP 23.03: 5.5 inches/day

FSR 5640- MP 0.04: 5.0 inches/day

FSR 9035 - MP 0.8: 4.0 inches/day

FSR 90000219 -MP 0.132: 3.5 inches/day

The IO-year, 24-hour storm event:

FSR 52 - MP 6.1: 4.5 inches/day

FSR 57 -MP 23.03: 6.5 inches/day

FSR 5640 - MP 0.04: 7 .0 inches/day

FSR 9035 - MP 0.8: 5.5 inches/day

FSR 90000219-MP 0.132: 5.5 inches/day

The 25-year, 24-hour storm event:

FSR 52-MP 6.1: 5.0 inches/day

FSR 57 -MP 23.03: 7.0 inches/day

FSR 5640 - MP 0.04: 7.5 inches/day

FSR 9035 - MP 0.8: 6.0 inches/day

FSR 90000219-MP 0.132: 5.5 inches/day

3 Precipitation frequency for W estem States

[7]

Section 3: Nature of Construction

3.1 General Description of Project and Scope of Work:

(i.e. highway construction, roadway realignment, highway and bridge reconstruction, etc.) is described below:

FSR 52-MP 6.1:

Damage: Heavy rains caused soil saturation which caused roadway to fall away toward the nver.

Repair: Reconstruct roadway embankment using Special Rock Embankment (SRE) and welded wire reinforcement to return roadway to original grade and stabilize slope. Resurface roadway.

FSR 57 - MP 23.03:

Damage: High storm flow in Lennox Creek eroded the bank undermining a section of road.

Repair: Place riprap at the toe of embankment, reconstruct the shoulder and embankment, and replace surface aggregate.

FSR 5640 - MP 0.04:

Damage: A debris slide protruded into the main stem of the Taylor River diverting the flow across the road. Flow created a channel on the opposite side of the road which caused severe erosion in three areas (from MP 0.04 to MP 0.10). The water then made its way back across the roadway to the river.

Repair: Roadway embankment replacement and re-grade, road surfacing, construct two, 60-foot-long riprap dips and reconstruct existing berm.

FSR 9035 - MP 0.8:

Damage: High storm flow in South Fork Snoqualmie River caused damage to a roadway within the Asahel Curtis day use area. The road shoulder was overwhelmed during high flows and failed, leaving a precipice at the roads edge.

Repair: Replace washed out road subbase, surfacing, and asphalt. Embankment repair will consist of Large Woody Material (L WM) and Class 5 riprap to stabilize the bank and restore the roadway.

FSR 90000219 - MP 0.132:

Damage: Emergency event caused damage to the 9000219 road in the North Bend area. The culvert was overwhelmed during high flows and failed. The Forest Service has since replaced the culvert and filled the roadway to restore the grade.

Repair: Subexcavate fill to a depth below the top of pavement, replace washed out road subbase, surfacing, and asphalt.

The type or function of the project is: Other transportation-related Emergency Repair

[8]

Construction Support Activities: If applicable, describe any construction support activities such as dedicated concrete or asphalt batch plants, dedicated aggregate sites, equipment staging yards, material storage areas, borrow, or disposal sites (government-selected sites):

To be completed by contractor

NOTE: All Contractor-selected sources and support sites are the sole responsibility of the General Contractor. The SWPPP and NPDES permitting for Contractor-selected sites and sources are separate from this documentation (SCR 107.0lA(h)).

Support activities are located on the general vicinity map and/or site map in 5 and 6.

Size of Project Action Areas:

(Including all Government-selected support sites such as staging, borrow, waste, access roads, affected downstre~m area, noise perimeter, extent of light effects, etc.)

FSR 52-MP 6.1:

Estimated Area

Total project area ( outermost project footprint):

Project area to be disturbed (area of digging):

Percent Impervious Project Area BEFORE Construction: 0 %

Runoff Coefficient BEFORE Construction: 0.60 %

Percent Impervious Project Area AFTER Construction: 0 %

Runoff Coefficient AFTER Construction: 0.60 %

FSR 57 - MP 23.03:

Estimated Area

Total project area (outermost project footprint):

Project area to·be disturbed (area of digging):

Percent Impervious Project Area BEFORE Construction: 0 %

Runoff Coefficient BEFORE Construction: 0.60 %

Percent Impervious Project Area AFTER Construction: 0 %

Runoff Coefficient AFTER Construction: 0.60 %

FSR 5640 - MP 0.04:

[9]

Units

0.05 Acres

0.05 Acres

• Units

0.21 Acres

• 0.16 Acres

Estimated Area

Total project area ( outermost project footprint):

Project area to be disturbed (area of digging):

Percent Impervious Project Area BEFORE Construction: 0 %

Runoff Coefficient BEFORE Construction: 0.60 %

Percent Impervious Project Area AFTER Construction: 0 %

Runoff Coefficient AFTER Construction: 0.60 %

FSR 9035 - MP 0.8:

Estimated Area

Total project area ( outermost project footprint):

Project area to be disturbed (area of digging):

Units

0.28 Acres

0.17 Acres

Units

0.28 Acres

0.15 Acres·

Percent Impervious Project Area BEFORE Construction: 0.01 %

Runoff Coefficient BEFORE Construction: 0.70 %

Percent Impervious Project Area AFTER Construction: 0.01 %

Runoff Coefficient AFTER Construction: 0.70 %

FSR 90000219 - MP 0.132:

Estimated Area

Total project area ( outermost project footprint):

Project area to be disturbed (area of digging):

Units

0.01 Acres

0.01 Acres

Percent Impervious Project Area BEFORE Construction: 0.01 %

Runoff Coefficient BEFORE Construction: 0.90 %

Percent Impervious Project Area AFTER Construction: 0.01 %

Runoff Coefficient AFTER Construction: 0.90 %

[10]

3.2 Sequence and Estimated Dates of Construction Activities

The intended construction sequencing and timing of major construction activities is detailed here, including the phased grading and stabilization activities used to minimize overall amount of disturbed soil.

Contractor and PE Note: Fill in all incomplete information following contract award date and prior to start of construction

Phase:

Construction sequence description: Duration of sequence:

BMPs associated with this

Stabilization measures:

sequence:

Click here to enter text. Click here to enter text. Click here to enter text. Click here to enter text.

Phase:

Construction sequence description: Duration of sequence:

BMPs associated with this

Stabilization measures:

sequence:

Click here to enter text. Click here to enter text. Click here to enter text. Click here to enter text.

Phase:

[11]

Construction sequence description: Duration of sequence:

Phase:

Construction sequence description: Duration of sequence:

Phase:

Construction sequence description: Duration of sequence:

BMPs associated with this sequence:

BMPs associated with this sequence:

BMPs associated with this sequence:

[12]

Stabilization measures:

Stabilization measures:

Stabilization measures:

g .0 ·;:

;i::

CJ

'O

CJ .,

l'xl n l'xl n l'xl l'xl n lx1

3.3 Potential Sources of Pollutants

The follow table identifies all potential sources ( checked activities in column 1) of sediment and other sources of pollution, which may reasonably be expected to affect the quality of stonnwater discharges from the construction site.

Potential Construction Site Pollutants

"' Construction Activity "' = .... tl "' "' = = ..

~ " "' = ·c C, '0 e "' -= -~ :~ '.E ~ ~ ., .. :s CJ = ,Q "' "' = = ~ 0 .. "' " 00 z = ""'~ i=..

Clearing, excavating, and grading X X

Fill of roadway embankment, backfill at structures X X

Vehicle/equipment fueling and maintenance X X

Vehicle/equipment use and storage X

Sanitary/septic waste X X

Dewatering operations X X

Drilling and blasting operations X X X

Concrete washout and waste X X

Structure construction/painting/cleaning X X X

Demolition and debris disposal X X X

Solid waste (trash and debris) X

Hazardous waste or contaminated spills X

Paving operations X X

Landscaping operations X X X

Mining, rock extraction, crushing X X X

Contractor and PE

Note: Fill in all incomplete information following contract award date and prior to start of construction

Construction and waste material expected to be stored on-site includes:

Material Storage Location

(13]

'3

X

X tl = .. .fl

- 0 Oi=..

X

X

X

X

X

X

Section 4: Site Maps

Vicinity maps are located in TAB 5.

Site maps and erosion and sediment control plan maps are located in TAB 6.

[14]

Section 5: Discharges

Industrial stormwater discharges associated with industrial activity other than construction at the site (including dedicated asphalt plants and dedicated concrete plants that are covered by this permit) include:

NOTE: An Industrial Activity Multi-Sector General Permit may be required for some activities.

Industrial Activity Stormwater Discharge Multi-Sector General Location Permit Number (if

1. NIA

2.

3.

5.1 Allowable Non-Stormwater Discharges

applicable)

Non-storrnwater discharges used at the construction sited are identified below, along with control measures used to eliminate or reduce the discharges and BMPs used to prevent storrnwater contamination.

Applicable to this

Project (check all that apply)

Potential Non-Stormwater Discharges

Waters used to wash vehicles where detergents are not used

Water used to control dust

Potable water including uncontaminated water line fhishings

Construction dewatering (uncontaminated)

Ground water or spring water (uncontaminated)

Routine external building wash down that does not use detergents

Pavement wash waters where spills or leaks of toxic or hazardous materials have not occurred (unless all spilled material has been removed) and where detergents are not used

0 Foundation or footing drains where flows are not contaminated with process materials such as solvents

0 Landscape irrigation

181 Discharges from emergency fire-fighting activities

0 Fire hydrant flushings

D . Uncontaminated air conditioning or compressor condensate

Control Measures

To be completed by contractor

NOTE: The likely locations of these discharges are identified on the site map TAB 5 and/or

TAB6

[15]

5.2 · Receiving Waters:

Are there any surface waters located within 50 feet of the construction disturbance? Yes

Name(s) of the first surface water that receives stormwater directly from your site and/or from the MS4

· 2. FSR 57 - MP 23.03: Lennox Creek

3. FSR 5640 - MP 0.04: Taylor River

5. FSR 90000219-MP 0.132: NONE

Impaired Waters/TDMLs:

Answer the following for each surface water listed in Table 1:

Is this surface What pollutant(s) is Has a TMDL water listed as causing the been "impaired?" impairment? completed?

1. Yes0Nol23J Yes D No l23J

2. Yes D No l23J Yes D No l23J

3. Yes D No l23J Yes D No l23J

4. Yes D No l23J Yes D No l23J

Pollutant(s) for which there is a TDML

Source used to determine whether or not your project discharges into an impaired water:

Click here to enter text.

Tier 2, 2.5 or 3 Waters

Answer the following for each surface water listed in Table 1:

Is this surface . If yes, specify which Tier.

water designated as Tier 1,2 or 3?

1. Yes 0No l23J Choose an item.

2. Yes 0No l23J Choose an item.

3. Yes D No l23J Choose an item.

4. Yes D No l23J Choose an item.

If applicable, documentation of consultation with State or Federal TMDL authorities on consistency of SWPPP conditions with the approved TMDL is found in TAB 11. The control measures required to ensure that discharge of pollutants from the site are consistent with the

(16] assumptions and requirements of the EPA-established or approved TMDL, including any specific waste-load allocations are included in that documentation.

5.3 Water Quality Monitoring Requirements

Provisions in Permit Conditions of the applicable NPDES stormwater permit, as well as the associated §401 certification or other special conditions, define additional monitoring and reporting requirements. Details about water quality monitoring and reporting requirements applicable to this project are included in TAB 11.

Samples and measurements taken for the purpose of monitoring will be representative of the monitored activity. Records of all monitoring information will be retained in TAB 11, including all calibration and maintenance records and all original strip chart recordings for continuous monitoring instrumentation.

Records of monitoring information will include:

1. The date, exact place, and time of sampling or measurements;

2. The individual(s) who performed the sampling or measurements;

3. The date(s) analyses were performed

4. The individual(s) who performed the analyses;

5. The analytical techniques or methods used; and

6. The results of such analyses.

[17)

Section 6: Compliance with Other Applicable Requirements

6.1 Endangered Species Protection

Under which criterion is project eligible for Endangered Species coverage under the NPDES permit (EPA)?

□ A DB De On ~E □ F

Criterion A.

Criterion B.

Criterion C

Criterion D.

No federally-listed threatened or endangered species or their designated critical habitat(s) are likely to occur in your site's "action area" as defined in Appendix A of EPA permit.

The construction site's discharges and discharge-related activities were already addressed in another operator's valid certification of eligibility for your action area under eligibility Criterion A, C, D, E, or F and there is no reason to believe that federally-listed species or federally-designated critical habitat not considered in the prior certification may be present or located in the "action area". To certify your eligibility under this Criterion, there must be no lapse ofNPDES permit coverage in the other operator's certification. By certifying eligibility under this Criterion, you agree to comply with any effluent limitations or conditions upon which the other operator's certification was based. You must include in your NOI the tracking number from the other operator's notification of authorization under this permit. If your certification is based on another operator's certification under Criterion C, you must provide EPA with the relevant supporting information required of existing dischargers in Criterion C in the EPA NOI form.

Federally-listed threatened or endangered species or their designated critical habitat(s) are likely to occur in or near your site's "action area," and your site's discharges and discharge-related activities are not likely to adversely affect listed threatened or endangered species or critical habitat. This determination may include consideration of any stormwater controls and/or management practices you will adopt to ensure that your discharges and discharge-related activities are not likely to adversely affect listed species and critical habitat. To make this certification, you must include the following in your NOI: 1) any federally listed species and/or designated habitat located in your "action area"; and

2) the distance between your site and the listed species or designated critical habitat (in miles). You must also include a copy of your site map with the NOL

Coordination between you and the Services has been concluded. The coordination must have addressed the effects of your site's discharges and discharge-related activities on federally-listed threatened or endangered species and federally-designated critical habitat, and must have resulted in a written concurrence from the relevant Service(s) that your site's discharges and discharge-related activities are not likely to adversely affect listed species or critical habitat. You must include copies of the

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Criterion E.

Criterion F.

correspondence between yourself and the Services in your SWPPP and NOi.

Consultation between a Federal Agency and the U.S. Fish and Wildlife Service and/or the National Marine Fisheries Service under section 7 of the ESA has been concluded. The consultation must have addressed the effects of the construction site's discharges and discharge-related activities on federally-listed threatened or endangered species and federally-designated critical habitat. The result of this consultation must be either:

1. a biological opinion that concludes that the action in question (taking into account the effects of your site's discharges and discharge-related activities) is not likely to jeopardize the continued existence of listed species, nor the destruction or adverse modification of critical habitat;

or

ii. written concurrence from the applicable Service(s) with a finding that the site's discharges and discharge-related activities are not likely to adversely affect federally-listed species or federally-designated habitat.

You must include copies of the correspondence between yourself and the Services in your SWPPP and NOL

Your construction activities are authorized through the issuance of a permit under section 10 of the ESA, and this authorization addresses the effects of the site's discharges and discharge-related activities on federally listed species and federally-designated critical habitat. You must include copies of the correspondence between yourself and the Services in your SWPPP and NOL

Support Documentation for Endangered Species criterion eligibility is filed in TAB 16.

6.2 Historic Preservation

1. Will the project involve installation of any of the following stormwater controls that entail subsurface earth disturbance? No

0 Dike

D Berm

D Catch Basin

D Pond

D Ditch, trench, swale, perimeter drain, etc.

D Culvert

D Other ground-disturbing stormwater control Click here to enter text.

If the project involves no installation of earth-disturbing stormwater controls, then no further historic preservation screening is necessary (for NPDES permitting purposes).

2. If answer to step 1 is Yes, have professional surveys or evaluations determined that historic properties do not exist (or have prior disturbances at the site precluded the existence of historic properties)? Choose an item.

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Provide documentation for the basis of this determination. Click here to enter text.

3. If answer to step 2 is No, have professional surveys or evaluations determined that installation of stormwater controls will have no effect on historic properties? Choose an item.

Provide documentation for the basis of this determination. Click here to enter text.

4. Has the State Historic Preservation Officer (SHPO), Tribal Historic Preservation Office (THPO) or other tribal representative concurred with the dete~inations of effects on historic properties? Choose an item.

Provide the nature of their response. Click here to enter text.

6.3 Safe Drinking Water Act Underground Injection Control Requirements

Will the project plan install any of the following controls? No

Check all that apply:

D Infiltration trenches (if stormwater is directed to any bored, drilled, driven shaft or dug hole that is deeper than is widest surface dimension, or has a subsurface fluid distribution system)

D Commercially manufactured pre-cast or pre-built proprietary subsurface detention vaults, chambers, or other devices designed to capture and infiltrate stormwater flow.

D Drywells, seepage pits, or improved sinkholes (if stormwater is directed to any bored, drilled, driven shaft or dug hole that is deeper than its widest surface dimension, or has a subsurface fluid distribution system)

If yes, provide documentation of communications with the EPA or applicable State agency.

Click here to enter text.

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Section 7: Erosion Sediment Controls

Control measures at the construction site are selected, installed, implemented, and maintained to minimize pollutants in the discharge as necessary to meet applicable water quality standards.

The objectives of this SWPPP include:

• Stabilize the site as soon as possible (targeting the preparation and implementation of erosion and sediment controls to get the site to final grade, and either permanently or temporarily stabilize all bare soil areas as soon as possible).

• Perimeter controls will be installed before ground disturbing activities are initiated.

• Perimeter protection will remain in place until final stabilization has been achieved.

• Slopes and channels will be protected by conveying concentrated stormwater runoff around the top of slopes and stabilize slopes as soon as possible. A void disturbing natural channels and the vegetation along natural channels as much as possible.

• Divert stormwater coming on to the site by conveying it safely around, through, or under the work area. (Divert the clean water, trap the dirty water.)

• Protect receiving waters and other environmentally sensitive waters or areas adjacent to the site.

• Follow pollution prevention measures by providing proper containers for waste and garbage at the site. Store hazardous materials and chemicals so that they are not exposed to stormwater.

• Minimize the area and duration of exposed soils. Clear only land that will be under construction in the near future.

7.1 Natural Buffers or Equivalent Sediment Controls (Required for EPA CGP states only - ID, WA)

This section only applies if a surface water is located within 50 feet of the project's earth disturbing activities.

Are there any surface waters within 50 feet of the project's earth disturbances? Yes

If No, then no further documentation is required for the SWPPP.

NOTE: Reference EPA CGP appendix G for buffer guidance.

If Yes, check which natural buffer compliance alternative is used at the project site:

D The project will provide and maintain a 50-foot wide undisturbed natural buffer.

The location and width of natural buffers are shown on the Erosion and Sediment Control Plan sheets in TAB 6.

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D The project will provide and maintain an undisturbed natural buffer that is less than 50 feet in width and is supplemented by additional erosion and sediment controls, which in combination achieves the sediment load reduction equivalent to a 50-foot undisturbed natural buffer.

The location of natural buffers are shown on the Erosion and Sediment Control Plan sheets in TAB 6.

Insert the width of the natural buffer to be retained Click here to enter text.

Insert description of additional erosion and sediment controls to be used in combination with the natural buffer: Click here to enter text.

Document the method used to determine that the above combination of natural buffer and sediment and erosion controls equal the estimated sediment removal capacity of a 50-foot undisturbed natural buffer: Click here to enter text.

C8J It is infeasible to provide and maintain an undisturbed natural buffer of any size, therefore, the project will implement erosion and sediment controls that achieve the sediment load reduction equivalent to a 50-foot undisturbed natural buffer.

Insert rationale for concluding that providing and maintaining a natural buffer of any size is infeasible: The sites include in-water work and therefore, it is infeasible to provide a natural buffer of any size.

Insert description of erosion and sediment controls to be used to achieve the sediment load reduction equivalent to a 50-foot undisturbed natural buffer: Fiber Rolls

D The project qualifies for one of the exceptions in EPA CGP Part 2.1.2.1.e

D For a "linear project", site constraints (e.g. limited right of way) make it infeasible for the project to meet any of the CGP part 2.1.2.1.a compliance alternatives.

D Other exception (state type): Click here to enter text.

Document why it is infeasible to meet one of the buffer compliance alternatives: Click here to enter text.

Insert description of erosion and sediment controls to be used to achieve the sediment load reduction equivalent to a 50-foot undisturbed natural buffer: Click here to enter text.

7.2 Perimeter Controls

All Perimeter Sediment Controls will be installed prior to ground disturbing activities taking place. There will be no clearing or grubbing outside the physical clearance limits.

Locations and design specifications of BMPs are shown on the erosion and sediment control plan sheets in TAB 6.

The following perimeter controls will be implemented:

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Measure: Fiber rolls

Implementation: All fiber rolls will be installed prior to any ground disturbing activities. Please also refer to project schedule, contract, and plan set (Erosion Control section).

Maintenance: Sediment will be removed from fiber roll perimeter controls before deposits reach 50% of the above ground height. It is the Contractor's responsibility to upgrade erosion control measures as necessary if the sediment controls are ineffective and turbid water is observed discharging from the site. Fiber rolls will not be removed until vegetation is satisfactorily established.

Measure: Temporary Diversion Berm Implementation: In accordance with project schedule and contract. Structure should be in working condition before usage is necessary and should remain in such condition until it is no longer needed. Please also refer to the project plan set (Erosion Control section).

Maintenance: Damaged sections of the diversion berm should be replaced immediately.

Contractor and PE Note: Add additional measures used during construction.

7 .3 Sediment Track-Out

The following methods will be implemented to minimize off-site vehicle tracking of sediment onto paved surfaces. If sediment escapes the construction site, off-site accumulations of sediment will be removed at a frequency sufficient to minimize off-site impacts.

Locations and design specifications ofBMPs are shown on the erosion and sediment control plan sheets in TAB 6.

Measure: Temporary construction access

Implementation: Temporary construction access will be installed at the beginning of constru~tion and will provide access to and from the sites. Vehicle use will be restricted to designated construction entrances to minimize the tracking out of sediment. Please also refer to project schedule, contract, and plan set (Erosion Control section).

Maintenance: Where sediment has been tracked-out from the site and onto the surface of off-site streets, other paved areas, and sidewalks, remove the deposited sediment by the end of the same work day in which the track-out occurs, or by the end of the next work day if track-out occurs on a non-work day. Remove the track-out by sweeping, shoveling, or vacuuming these surfaces, or by using other, similarly effective means of sediment removal. Hosing or sweeping tracked-out sediment into any stormwater conveyance (unless it is connected to a sediment basin, sediment trap, or similarly effective control), storm drain inlet, or surface water is prohibited.

Contractor and PE Note: Add additional measures used during construction.

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7 .4 Stockpiled Soil or Other Erodible Materials

Stockpile management includes measures to minimize surface erosion and sediment transport from soil stockpiles or other erodible materials.

Locate erodible stockpiles away from drainages including storm sewer inlets and culvert inlets.

Locations of stockpiles are shown on the erosion and sediment control plan sheets in TAB 6.

Measure: Fiber rolls ·

Implementation: All fiber rolls will be installed prior to any ground disturbing activities. Please also refer to project schedule, contract, and plan set (Erosion Control section).

Maintenance: Sediment will be removed from fiber roll perimeter controls before deposits reach 50% of the above ground height. It is the Contractor's responsibility to upgrade erosion control measures as necessary if the sediment controls are ineffective and turbid water is observed discharging from the site. Fiber rolls will not be removed until vegetation is satisfactorily established.

Measure: Plastic sheets Implementation: Soil stockpiles and other erodible materials should be covered by plastic as soon as they are generated. Please also refer to project schedule, contract, and plan set (Erosion Control section).

Maintenance: Contractor should frequently check plastic to ensure soil or other erodible material is covered.

Measure: Temporary construction access

Implementation: Temporary construction access will be installed at the beginning of construction and will provide access to and from the sites. Vehicle use will be restricted to designated construction entrances to minimize the tracking out of sediment. Please also refer to project schedule, contract, and plan set (Erosion Control section).

Maintenance: Where sediment has been tracked-out from the site and onto the surface of off-site streets, other paved areas, and sidewalks, remove the deposited sediment by the end of the same work day in which the track-out occurs, or by the end of the next work day if track-out occurs on a non-work day. Remove the track-out by sweeping, shoveling, or vacuuming these surfaces, or by using other, similarly effective means of sediment removal. Hosing or sweeping tracked-out sediment into any stormwater conveyance (unless it is connected to a sediment basin,·sediment trap, or similarly effective control), storm drain inlet, or surface water is prohibited.

Contractor and PE Note: Add additional measures used during construction.

7.5 Minimize Dust

Dust control includes practices used to reduce or prevent the surface and air transport of dust during construction

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Measure: Application of water for dust control

Implementation: During active construction as needed. Apply at a rate of 3 gallons per acre, using a diffused or sprinkled flow. Care should be taken not to saturate or muddy the dust and that dust generation does not increase. Please also refer to project schedule, contract, and plan set (Erosion Control section).

Maintenance: Application of water for dust control requires constant attention. Sprinkling will likely need to be done several times per day, especially during hot, dry weather.

Contractor and PE Note: Add additional measures used during construction.

7.6 Minimize Disturbance of Steep Slopes

Describe how disturbance of steep slopes will be minimized. Describe controls ( e.g. erosion control blankets, tackifiers) that will be implemented to minimize sediment discharges from slope disturbances.

If applicable, describe how stormwater run-on and run-off will be managed. Flows may be diverted from exposed soils by retaining/detaining flows or otherwise minimizing runoff and the discharge of pollutants from exposed areas of the site. Placement of structural practices in floodplains will be avoided to the degree technologically and economically practicable and achievable.

181 Not applicable to this project. Reason: Project design has addressed steep slope areas. The permanent repairs will stabilize the steep slopes through use of special rock embankments and riprap/streambank restoration efforts

7.7 Topsoil Conservation

Describe how topsoil will be preserved, if feasible. If conservation of topsoil is infeasible, explain why, and describe alternate methods to be used to insure optimum vegetation survival and growth.

Erosion and sediment control measures for topsoil stockpiles (and other erodible materials) are shown in section 4.4.

181 Conservation of topsoil is Infeasible:

Reason: Not Applicable

Alternate method: Click here to enter text.

□ Conservation of topsoil is Feasible:

Measure: Click here to enter text.

Implementation: Click here to enter text.

Maintenance: Click here to enter text.

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Contractor and PE Note: Add additional measures used during construction.

7 .8 Minimize Soil Compaction

Minimize soil compaction in areas where final vegetative stabilization will occur and where infiltration practices will be installed.

Measure: Djstribute layer of soft vegetative top soil after compaction complete.

Implementation: After soil compaction is complete and prior to revegetation efforts.

Maintenance: Maximize depth whenever possible and seed as soon as practicable. If seeding cannot occur in a timely manner, other BMPs (nets, blankets, etc.) will be placed to mitigate eros10n.

Contractor and PE Note: Add additional measures used during construction.

7.9 Storm Drain Inlets and Culvert Inlets

Applicable for stormwater drain inlets which are connected to separate storm sewer systems (usually in urban locations) AND for culvert inlets that discharge stormwater from the project into surface waters.

Locations and design specifications of BMPs are shown on the erosion and sediment control plan sheets in TAB 6. ·

181 Not applicable to this project. Reason: There are no stormwater drain inlets which are connected to separate storm sewer systems

If applicable:

The following BMPs are applicable to:

□ Storm Drain Inlets

□ Culvert Inlets

Contractor and PE Note: Add additional measures used during construction.

7.10 Constructed Stormwater Conveyance Channels and Culvert Outlets

Describe velocity dissipation and/or erosion control devices to be installed at stormwater conveyance channels (such as roadside ditches) and culvert outlets. Includes permanent and temporary devices (specify).

Velocity dissipation devices will be placed at discharge locations and along the length of any outfall channel to provide a non-erosive flow velocity from the structure to a water course so that the natural physical and biological characteristics and functions are maintained and protected (e.g., no significant changes in the hydrological regime of the receiving water).

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Locations and design specifications ofBMPs are shown on the erosion and sediment control plan sheets in TAB 6.

Measure: Check Dams Implementation: Following ditch construction. Where temporary or permanent channels are not yet vegetated, channel lining is infeasible and, therefore, velocity checks are required. Please also refer to project schedule, contract, and plan set (Erosion Control section).

Maintenance: Regular inspections should be made to ensure that the center of the dam is lower than the edges. Sediment will be removed from check dams before deposits reach 50% of the above ground height. Check dams will not be removed until vegetation is satisfactorily established.

Contractor and PE Note: Add additional measures used during construction.

7 .11 Sediment Basins

If applicable, provide site design specifications and other details for design of sediment basins and ponds. This may also include sediment infiltration swales.

Locations and design specifications ofBMPs are shown on the erosion and sediment control plan sheets in TAB 6.

At a minimum, sediment ponds must provide storage for either the calculated volume of runoff from the 2-year, 24-hour storm event or 3,600 cubic feet per acre drained. Sediment ponds must also use outlet structures that withdraw water from the surface, unless infeasible.

181 Not applicable to this project.

7.12 Chemical Treatment

If chemical sediment control (such as polymers) will be used, provide design specifications and other details considered when choosing treatment type and locations.

181 Not applicable to this project.

If applicable:

NOTE: If use of cationic treatment chemicals is planned, separate prior approval is required from EPA.

Locations of chemical treatment sites are shown on the erosion and sediment control plan sheets in TAB 6.

Describe/name treatment chemicals that will be used and why these chemicals are suited to site soil characteristics and other construction site conditions: Click here to enter text.

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Describe treatment system specifications and dosage of chemicals to be used: Click here to enter text.

Describe storage of chemicals and other material safety data: Click here to enter text.

Special controls to be used for Cationic treatment chemicals: Click here to enter text.

Describe training that personnel handling/applying treatment chemicals have/will receive: Click here to enter text.

7 .13 Dewatering Practices

Discharge of ground water or accumulated stormwater that is removed from excavations, trenches, foundations, etc. into surface waters is prohibited unless such waters are first effectively managed by appropriate sediment controls. Uncontaminated non-turbid dewatering water can be discharge without being routed to a control.

181 Not applicable to this project - Project includes diversion activities to remove water from the isolated work area, but does not require dewatering for excavation, trench or foundation work.

Contractor and PE…