SWPPP-WA FS ERFO 2016(1)-20(3) Darrington District Phase 1.pdf

Stormwater Pollution Prevention Plan

For:

Darrin on District Phase 1, A FS ERFO 2016(1)-20{3)

Snohomish and Skagit Counties, Washington

Federal Highway Administration, Western Federal Lands Highway Division

Project Engineer: __________ _

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

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

TAB 5: 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

CONTRACTOR:

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 I.11.2.

File approved SWPPP narrative in Tab 1.

For Construction Activities at:

Project Name: DaJTington District Emergency Repairs - Phase 1

WAFS ERFO 2016(1)-20(3)

Project Site Location: Emergency repair sites in Snohomish and Skagit counties, Mt.

Baker-Snoqualmie National Forest

City, County, State, Darrington, Snohomish and Skagit Counties, Washington, 98241 Zip Code:

SWPPP Prepared for:

Organization Name:

Address:

Telephone Number:

SWPPP Prepared by:

Name, Title:

Name, Title:

Company/Organization:

Address:

Telephone Number:

FHWA, Western Federal Lands Highway Division

610 East Fifth Street

Vancouver, WA 98661-3801

360-619-7700

Christopher J. Kelly, Environmental Protection Specialist

FHWA, Western Federal Lands Highway Division

610 East Fifth Street

Vancouver, WA 98661-3801

360-619-7806

SWPPP Preparation Date: 02/21/2018

Estimated Construction Start Date: 07/08/2018 Estimated Construction Completion Date:

06/30/2020

Estimated Revegetation Start Date: 06/15/2020 Estimated Revegetation Completion Date:

10/15/2021

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 Con-espondence

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)

SWPPP/ESCP NARRATIVE

STORMWATER POLLUTION PREVENTION PLAN (SWPPP) ......................................... l

SECTION 1: RESPONSIBLE PARTIES/CONTACT INFORMATION

1.1 Operator(s):

1.2 Construction Site SWPPP Contact(s):

1.3 SWPPP Prepared by:

1.4 NPDES Stormlvater Permit

1.5 SWPPP Administrator

1.6 Permitting Authority for FHWA/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

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)25

7.2 Perimeter Controls

[i]

7.3 Sediment Track-Out .............................................................•...........•........•

7.4 Stockpiled Soil or Other Erodible Materials ..........•......•

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

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

7.7 Topsoil Conservation

7.8 Minin1ize Soil Compaction ............................................................•..................................•

7.9 Storm Drain Inlets and Culvert Inlets

7.10 Constructed Stormwater Conveyance Channels and Culvert Outlets

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

7.12 Chemical Treatment .......•.........•......................................•.........•.......•...•

7 .13 Dewatering Practices

7.14 Erosion Control and Stabilization ..•..............................................................•

7.15 Removal of BMPs ................•............•..........................................................................................• 34

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

SECTION 8: OPERATIONAL CONTROLS/GOOD HOUSEKEEPING MEASURES

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

8.2 Spills/Releases in Excess of Reportable Quantities ...................•.........•...................••

8.3 EquipmentNehicle Fueling and Maintenance Practices .•........•

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

8.5 Material Handling and Waste Management ..................•...............•..........•.•

8.6 Designate Concrete Washout Areas .............................................•.....................................•

SECTION 9: INSPECTIONS

9.1 Inspection Frequency ...................•.......•...................................••..........................................•...•..• 39

9.2 Corrective Actions

SECTION 10: DELEGATIONS OF AUTHORITY .............................................................. ~. 41

SECTION 11: STAFF TRAINING

SECTION 12: CERTIFICATION AND NOTIFICATION

[ii]

1.1 Ope.rator(s):

Organization Name:

Address:

Telephone Number:

Contractor and

FHWA, Western Federal Lands Highway Division (WFLHD 610 East Fifth Street Vancouver, WA 98661-3801 360-619-7700

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

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

Address:

Telephone Number:

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

1.2 Construction Site SWPPP Contact(s):

FHWA Contact Name: TBD

Title: Project Engineer

Address:

Telephone Number:

General Contractor, TBD Company:

(complete for all States) Erosion Control TBD Supervisor Name:

(complete for all States) Address:

Telephone Number:

1.3 SWPPP Prepared by:

Organization/Company:

Name, Position:

Role/Responsibility Telephone Number:

Email:

Name, Position:

Role/Responsibility Telephone Number:

Email:

Christopher J. Kelly, Environmental Protection Specialist SWPPP preparer 360-619-7806 christopher.kelly@dot.gov

1.4 NPDES Stormwater Permit

The Applicable EPA/State NPDES Stormwater Permit is located in T 2. The Project NOi and EPA/State Acknowledgement with NP DES Tracking Number is located in 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 T

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

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

Idaho and Washington, Environmental Protection Agency=-'-'-'--'-==--"'-"-

State Permitting Authority Washington • WDE is permitting authority for most discharges within the state EXCEPT for:

• EPA is permitting authority for Federal Operators and lndian 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 ~==·

[2]

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 oflntent (NOI) after the SWPPP is complete.

Project Name: Darrington District Emergency Repairs Phase 1

WAFS ERFO 2016(1)-20(3)

Project Site Location: Emergency repair sites in Snobomish and Skagit counties, Mt. Baker-Snoqualmie National Forest

City, County, State, Zip Code:

Darrington, Snohomish and Skagit counties, Washington, 98241

Latitude/Longitude (Using .Q!!!: of three possible formats) 1

Site 1: FSR 2081 MP 1.3

Latitude: 48.16048° N, Longitude: -121.4726° W

Site 2: FSR 2081 MP 2.25

Latitude: 48.16235° N, Longitude: -121.48160° W

Site 3: FSR 2083 MP 0.1

Latitude: 48.15945° N, Longitude: -121.47332° W

Site 4: FSR 2660 MP 4. l

Latitude: 48.33683°N, Longitude: -121.3989° W

Site 5: FSR 2660 MP 4.2

Latitude: 48.33337°N, Longitude: - 121.39784° W

Site 6: FSR 2700 MP 6.9

Latitude: 48.19973° N, Longitude: -121.3 799° W

Site 7: FSR 2800 MP 5.3

Latitude: 48.3512° N, Longitude: -121.62463° W

Site 8: FSR 2800 MP 10.3-10.4

Latitude: 48.36605° N, Longitude: -121.64299° W

1 Detailed information on determining the site's latitude and longitude can be found at:

www.epa.gov/npdes/stormwater/latlong

[3]

Site 9: FSR 2800 MP 11.0 (11.4)

Latitude: 48.36073° N, Longitude: -121.65282° W

Site 10: FSR 2810 MP 2.3

Latitude: 48.28345° N, Longitude: -121.62142° W

Site 11: FSR 4052 MP 1.9

Latitude: 48. l 0289° N, Longitude: -121.56515° W

Site 12: FSR 4052 MP 2.2

Latitude: 48.1056° N, Longitude: -121.5686° W

Site 13: FSR 4052 MP 2.55

Latitude: 48.1078° N, Longitude: -121.5726° W

Site 14: FSR 4052 MP 3.0

Latitude: 48.1107 ° N, Longitude: -121.58128° W

Site 15: FSR 4052 MP 3.7

Latitude: 48.1107° N, Longitude 121.58128° W

Site 16: FSR 2000 MP 39.9

Latitude: 48.12545°N, Longitude:-12l.41212°W

Site 17: FSR 4065 MP l.15

Latitude: 48.0362° N, Longitude -121.4 7887° W

The method used for determining latitude/longitude was:

Site I: FSR 2081 MP 1.3

Township: 31 N

Range: 10 E

Section: 23

Waterbody: Unnamed Tributary to Sauk River

Site 2: FSR 2081 MP 2.25

Township: 31 N

Range: 10 E

Section: 23

Waterbody: Dutch Creek

[4] map

Site 3: FSR 2083 MP 0.1

Township: 31 N

Range: 10 E

Section: 23

Waterbody: Unnamed Tributary to Sauk River

Site 4: FSR 2660 MP 4.1

Township: 33 N

Range: 11 E

Section: 21

Waterbody: Tenas Creek

Site 5: FSR 2660 MP 4.2

Township: 33 N

Range: 11 E

Section: 21

Waterbody: Tenas Creek

Site 6: FSR 2700 MP 6.9

Township: 31 N

Range: 11 E

Section: NIA

Waterbody: Unnamed Tributary to White Chuck River

Site 7: FSR 2800 MP 5.3

Township: 33 N

Range: 9 E

Section: 15

Waterbody: North Fork Stillaguamish River

Site 8: FSR2800 MP 10.3-10.4

Township: 33 N

Range: 9 E

Section: 9

Waterbody: Unnamed Tributary to Crevice Creek

Site 9: FSR 2800 MP 11.0 (11.4)

Township: 33 N

Range: 9 E

Section: 9

Waterbody: Unnamed Tributary to Crevice Creek

(5]

Site 10: FSR 2810 MP 2.3

Township: 32 N

Range: 9 E

Section: 11

Waterbody: Unnamed Tributary to North Fork Stillaguamish River

Site 11: FSR 4052 MP 1.9

Township: 30 N

Range: 10 E

Section: NI A

Waterbody: Unnamed Tributary to Deer Creek

Site 12: FSR 4052 MP 2.2

Township: 30 N

Range: 10 E

Section: NI A

Waterbody: Unnamed Tributary to Deer Creek

Site 13: FSR 4052 MP 2.55

Township: 30 N

Range: 10 E

Section: NI A

Waterbody: Unnamed Tributary to Deer Creek

Site 14: FSR 4052 MP 3.0

Township: 30 N

Range: 9 E

Section: NI A

Waterbody: Unnamed Tributary to Deer Creek

Site 15: FSR 4052 MP 3.7

Township: 30 N

Range: 9 E

Section: NI A

Waterbody: Unnamed Tributary to Deer Creek

Site 16: FSR 2000 MP 39.9

Township: 31 N

Range: 11 E

Section: NI A

Waterbody: False Skull Creek [6]

Site 17: FSR 4065 MP 1.15

Township: 29 N

Range: 10 E

Section: 2

Waterbody: Unnamed tributary to South Fork Stillaguamish River

Is the project located in Indian country? No

If yes, the name of Reservation is:

Name of Reservation:

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

The project 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 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:

The general setting is mountainous and forested, with numerous perennial and intermittent streams dissecting the hillslopes. The primary waterbodies in the project area are the unnamed tributary to the Sauk River, Dutch Creek, Tenas Creek, North Fork Stillaguamish River, unnamed tributary to White Chuck River, unnamed tributary to Crevice Creek, unnamed tributary to North Fork Stillaguamish River, unnamed tributaries to Deer Creek, and False Skull Creek.

Also, see 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 T 6

[7]

The location of discharge points or areas

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

Also see T 6

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

5 6.

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,2

Soil data unavailable from the USDA Web Soil Survey.

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 T B 6

Protected Natural Features:

Waterbodies in the project area include the following; unnamed tributary to the Sauk River, Dutch Creek, Tenas Creek, North Fork Stillaguamish River, unnamed tributary to White Chuck River, unnamed tributary to Crevice Creek, unnamed tributary to North Fork Stillaguamish River, unnamed tributaries to Deer Creek, and False Skull 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 to maintain water quality standards.

[8]

Mean Annual Precipitation at the Project Site: Approx. 102.96

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

Approx. 3.5 Inches per day

The 10-year, 24-hour storm event:

Approx. 5.0 Inches per day

The 25-year, 24-hour storm event:

Approx. 6.5 Inches per day

[9]

Section 3: Nature of Construction Activity

3.1 General Description of Project and Scope of Work:

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

Site 1 : FSR 2081 MP 1.3

• Replace culvert with 60-inch pipe culvert at 22+68. Place riprap at inlet and outlet of new culvert. Remove debris deposit from roadbed and 40-feet up drainage.

Site 2: FSR 2081 MP 2.25

• Remove, clean, and relay existing culvert at 31 +67. Place riprap at inlet and outlet of new culvert. Replace the embankment and roadway surfacing.

Site 3: FSR 2083 MP 0.1

• Clean culvert inlets. Install 48-inch pipe culvert at 12+43 and 36-inch pipe culvert at 13+38. Place riprap at inlet and outlet of new culverts. Remove debris and resurface the road for 3 00-feet.

Site 4: FSR 2660 MP 4.1

• Clean culverts at 402+25, 402+80, and 403+51 in place. Install 36-inch culvert at 403+08. Restore roadway embankment, provide underdrain and rock in-fill above road ditch line.

Site 5: FSR 2660 MP 4.2

• Annor west abutment with heavy riprap and replace approach embankment.

Site 6: FSR 2700 MP 6.9

• Clean culvert at 274+39. Install 24-inch pipe culvert at 279+10. Construct Mechanical Stabilized Earth wall between 278+25 and 278+97. Blade and shape 800-feet of road and regrade road 1-2-feet of deposits on the road for 236-feet.

Site 7: FSR 2800 MP 5.3

• Remove existing culvert and replace with 216-inch structural plate pipe. Place riprap at inlet and outlet of new culverts. Replace embankment and surfacing.

Site 8: FSR 2800 MP 10.3-10.4

• Replace culvert at MP 10.3 with Forest Service supplied 108-inch pipe culvert.

Replace culvert at MP 10.4 with Forest Service supplied 36-inch pipe culvert. Place riprap at inlet on both. Restore embankment and replace surfacing between MP 10.0 and MP 10.4.

[IO]

Site 9: FSR 2800 MP 11.0 (11.4)

• Replace 60-inch culve1t with 96-inch pipe culvert. Place riprap at inlet and outlet of new culvert. Replace embankment and surfacing. Lower the road profile to create a swale over the culvert.

Site 10: FSR 2810 MP 2.3

• Repair embankment failure with geotextile and riprap slope. Install underdrain. Repave with asphalt.

Site 11: FSR 4052 MP 1.9

111 Clean existing culvert in place. Place riprap at inlet and outlet of culvert. Remove slide debris, re-establish the pre-disaster roadbed and replace 750-feet of aggregate surfacing.

Site 12: FSR 4052 MP 2.2 e Install a 48-inch culvert and concrete ford at 73+22. Place riprap at inlet and outlet of culvert. Remove slide debris, re-establish the pre-disaster roadbed and replace aggregate surfacing.

Site 13: FSR 4052 MP 2.55

111 Remove slide debris from culvert inlet and repair ford at outlet by removing bottom 4-inches and replacing with a formed concrete pad runoff. Place riprap at inlet. Remove slide debris, re-establish the pre-disaster roadbed and replace 275-feet of aggregate surfacing.

Site 14: FSR 4052 MP 3.0

• Clean culverts in place at 81 +24 and 82+98. Place riprap at inlet and outlet of culvert at 81+24. Replace fill and re-establish the pre-disaster roadbed and replace aggregate surfacing. Construct embankment fill from nearby/onsite materials.

Site 15: FSR 4052 MP 3.7

• Remove slide material and restore drainage. Haul slide material to a nearby designated waste area and stockpile.

Site 16: FSR 2000 MP 39.9

• Clean 48-inch and 60-inch culverts in place. Install Forest Service supplied 36-inch culvert. Remove debris 50-feet upstream and slope debris removal excavation up to existing debris for an additional 50-feet.

Site 17: FSR4065MP1.15

[11]

• Clean 24-inch culvert in place at 301+35. Place riprap at inlet and outlet of culvert.

Replace failed road embankment.

The type or function of the project is: Road Construction

Contractor and PE

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

[12]

Construction Support Activities: If applicable, describe any construction supp01i 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):

TBD by Contractor

NOTE: AH 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

Size of the Construction Project:

(Including all Government-selected support sites such as staging, borrow, waste, access roads, etc.)

Estimated Area

Total project area (within ROW or Construction limits):

Construction site area to be disturbed:

Percent Impervious Area BEFORE Construction: 33 %

Runoff Coefficient BEFORE Construction: 0.85

Percent Impervious Are AFTER Construction: 45 %

Runoff Coefficient AFTER Construction: 0.85

[13]

Units

3.70 Acres

3.70 Acres

3.

S eq u en ce a n d

E st im at ed D at es o f

C on st ru ct io n A ct iv it ie s

T he i nt en de d co ns tr uc ti on s eq ue nc in g an d ti m in g o f m aj or c on st ru ct io n ac ti vi ti es is d et ai le d he re in cl ud in g th e ph as ed g ra di ng a nd s ta bi li za ti on ac vi ti es u se d to m in im iz e ov er al l am ou nt o f d is tu rb ed s oi l.

C on st ru ct io n sc he du le to b e pr ov id ed b y

C on tr ac to r.

A dd a dd it io na l p ha se s an d ac ti vi es as n ee de d.

C tr ac to r an d P

E

N ot e:

F ill i n al l in co m pl et e in fo rm at io n fo ll ow in g co nt ra ct a w ar d da te a nd p ri or to s ta rt o f c on st ru ct io n

P ha se

C on tr ac to r to f ill in a ll ac ti vi es st ru ct io n se qu en ce d es cr ip ti on

D ur at io n of se qu en ce

B

M P s as so ci at ed w it h th is

St ab il iz at io n m ea su re s:

se qu en ce c1 to e n te r te xt to e n te r te xt

C lic k w nt er t e xt c tu e n te r te xt

P ha se

C on st ru ct io n se qu en ce d es cr ip ti on

D ur at io n of se qu en ce

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M P s as so ci at ed w it h th is

St ab ili za ti on m ea su re s:

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D D n D D D D D

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 stormwater discharges from the construction site. To be reviewed and edited by contractor.

Potential Construction Site Pollutants

"' "' Construction Activity "' ii "' ti

... c "'

"d

., ::; ... c: c.!l 'O ... ·;: "' 5 ~ "d .c: ·- ~ ..... ·5 "' ... .. :;.; .... "'..Q "' "' ... z "' = 0 ... "' ... "' rJl i;Q Q. E-<O Q.. =

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 x Solid waste (trash and debris) x Hazardous waste or contaminated spills x x Paving operations x x Landscaping operations x x x Mining, rock extraction, crushing x x x

Contractor and PE

Note: Fm 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: (to be completed by contractor):

Material Storage Location

[16] ti c:

.c:=

OQ..

x x x x x x

Vicinity maps are located in 5. Site maps and erosion and sediment control plan maps are located in

[17]

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 Pe1mit may be required for some activities.

Industrial Activity

I.None

2.

3.

Stormwater Discharge Location

5.1 Allowable Non-Stormwater Discharges

Multi-Sector General Permit Number (if applicable)

Non-stormwater 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 stormwater contamination. To be reviewed, edited, and completed by Contractor.

Applicable to this Project (check all that apply)

Potential Non-Stormwater Discharges Control Measures

D [8'.J

D

Waters used to wash vehicles where detergents are not used

Water used to control dust

Potable water including uncontaminated water line flushings

[8'.J Construction dewatering (uncontaminated)

[8'.J Ground water or spring water (uncontaminated)

D Routine external building wash down that does not use detergents

[8'.J 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

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

D Landscape irrigation

[8'.J Discharges from emergency fire-fighting activities

D Fire hydrant flushings

D Uncontaminated air conditioning or compressor condensate

NOTE: The likely locations of these discharges are identified on the site map T

[18]

5 and/or

5.2 Receiving Waters:

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

Name(s) of the first surface water that receives stormwater directly from your site and/or from theMS4

1. Unnamed Tributary to the Sauk River (Site 1: FSR 2081 MP 1.3 and Site 3: FSR 2083 MP 0.1)

2. Dutch Creek (Site 2: FSR 2081 MP 2.25)

3. Tenas Creek (Site 4: FSR 2660 MP 4.1 and Site 5: FSR 2660 MP 4.2)

4. Unnamed Tributary to White Chuck River (Site 6: FSR 2700 MP 6.9)

5. No1ih Fork Stillaguamish River (Site 7: FSR 2800 MP 5.3)

6. Unnamed Tributary to Crevice Creek (Site 8: FSR 2800 MP 10.3-10.4 and Site 9: FSR 2800

MP 11.0 (11.4))

7. Unnamed Tributary to North Fork Stillaguamish River (Site 10: FSR 2810 MP 2.3)

8. Unnamed Tributary to Deer Creek (Site 11: FSR 4052 MP 1.9, Site 12: FSR 4052 MP 2.2, Site 13: FSR 4052 MP 2.55, Site 14: FSR 4052 MP 3.0, and Site 15: FSR 4052 MP 3.7)

9. False Skull Creek (Site 16: FSR 2000 MP 39.9)

• 10. Unnamed Tributary to South Fork Stillaguamish River (Site 17: FSR 4065 MP 1.15)

Impaired Waters/TDMLs:

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

water listed as "impaired?"

Yes D No fX1

What poUutant(s) is causing the impairment?

•·-- ''"""-'""l"'"""'"''' ''""''""'""'"''''

Yes D No fX1 Yes D No fX1

Yes D No fX1 been completed?

, Pollutant(s) for which there is a TDML

Yes D No fX1

Yes 0No fX1

Yes fX1 No D Dissolved oxygen

Fecal coliform bacteria

Mercury pH

Temperature

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Yes D No fX1

Yes D No fX1

Yes D No fX1

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

303 (d) list

Tier 2, 2.5 or 3 Waters Answer the following for each surface water listed in Table 1:

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 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 T 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 T l l, including all calibration and maintenance records and all original strip chart recordings for continuous monitoring instrumentation.

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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.

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6.1 Endangered Species Protection

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

DA DB De Dn ~E

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 ce1iification may be present or located in the "action area". To certify your eligibility under this Criterion, there must be no lapse ofNPDES pe1mit 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 stonnwater 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.

conespondence between yourself and the Services in your SWPPP and

NOL

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:

I. 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

IL written concUITence 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 conespondence 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 conespondence between yourself and the Services in your SWPPP and NOL

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

6.2 Historic Preservation

1. Will the project involve installation of any of the following storm water controls that entail subsurface earth disturbance?

D Dike

D Berm

D Catch Basin

D Pond

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

~ Culvert

D Other ground-disturbing stormwater control 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)?

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Provide documentation for the basis of this determination. FS completed Section 106 consultation and surveys where necessary, Forest Service is Section 106 lead.

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? an

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

4. Has the State Historic Preservation Officer (SHPO), Tribal Historic Preservation Office (THPO) or other tribal representative concurred with the determinations of effects on historic properties?

Provide the nature of their response. All sites are covered by the FS Programmatic Agreement.

The FS is the Section 106 Federal Lead for the project sites.

6.3 Safe Drinking Water Act Underground Injection Control Requirements

Will the project plan install any of the following controls?

Check all that apply:

D Infiltration trenches (if stonnwater 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 stonnwater 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.

to enter text.

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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 stonnwater.

• 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?

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 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 buff er.

The location of natural buffers are shown on the Erosion and Sediment Control Plan sheets m

Insert the width of the natural buffer to be retained to i:.:nter

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

cg] 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: Most of the ERFO repair sites include in-water work and therefore it is not feasible to maintain a natural buffer between the work activities and streams.

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 and silt fence

D The project qualifies for one of the exceptions in EPA COP 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 COP part 2.1.2.1.a compliance alternatives.

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

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

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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 6.

The following perimeter controls will be implemented:

Control 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 requirements: 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.

Control measure: Silt Fence

Implementation: The silt fence shall be functional before other land disturbing activities take place. Silt fence should be functional throughout the duration of construction and for a long enough duration following construction to allow disturbed areas to stabilize following revegetation and seeding. Please also refer to project schedule, contract, and plan set (Erosion Control section).

Maintenance requirements: Silt fences should be inspected periodically for damage (such as tearing by wind, animals, or equipment) and for sediment that has accumulated. Remove the sediment when it reaches one-half the height of the silt fence. In situations where access is

, available, machinery can be used. Otherwise, silt should be removed manually. The following are key elements to remember:

• The sediment deposits should be removed when heavy rain or high water is anticipated.

• The sediment deposits should be placed in an area where there is little danger of erosion.

• The silt fence should not be removed until adequate vegetative growth ensures no further erosiOn of the slopes. Generally, the fabric is cut at ground level, the wire and posts are removed, then the sediment is spread, seeded, and protected (mulched) immediately.

Control measure: Temporary Diversion Berm

Implementation: In accordance with schedule and contract along the North Trail alignment.

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 project schedule, contract, and plan set (Erosion Control section).

Maintenance: Damaged sandbags should be replaced immediately.

Add other measures as needed.

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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 of BMPs are shown on the erosion and sediment control plan sheets in T 6.

D Not applicable to this project. Reason: to enter

If applicable:

Control measure: Washing within perimeter, without detergents or solvents

Implementation: During active construction, as necessary. Please also refer to project schedule, contract, and plan set (Erosion Control section).

Maintenance requirements: Care must be taken that runoff is directed within construction perimeter and is to be managed by established control methods already in place. Any uncontrollable runoff must be remedied and additional BMPs put in place.

Add other measures as needed.

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 T 6.

D Not applicable to this project. Reason: to enter text.

If applicable:

Control 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 requirements: 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.

Control measure: Silt Fence

Implementation: The silt fence shall be functional before other land disturbing activities take place. Silt fence should be functional throughout the duration of construction and for a long

[28] enough duration following construction to allow disturbed areas to stabilize following revegetation and seeding. Please also refer to project schedule, contract, and plan set (Erosion Control section).

Maintenance requirements: Silt fences should be inspected periodically for damage (such as tearing by wind, animals, or equipment) and for sediment that has accumulated. Remove the sediment when it reaches one-half the height of the silt fence. In situations where access is available, machinery can be used. Otherwise, silt should be removed manually. The following are key elements to remember:

• The sediment deposits should be removed when heavy rain or high water is anticipated.

• The sediment deposits should be placed in an area where there is little danger of erosion.

• The silt fence should not be removed until adequate vegetative growth ensures no further erosion of the slopes. Generally, the fabric is cut at ground level, the wire and posts are removed, then the sediment is spread, seeded, and protected (mulched) immediately.

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

Add other measures as needed.

7.5 Minimize Dust

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

0 Not applicable to this project. Reason: to enter text.

If applicable:

Control 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 requirements: 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.

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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 storm water 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.

D Not applicable to this project. Reason: to enter text

If applicable:

Control measure: Erosion control blanket

Implementation: During active construction and in accordance with schedule and contract. Prior to installation, the area should be properly shaped and graded to agree with the design and all rocks and other foreign debris removed from the area. Lime, fertilizer, plantings, and/or seeding should be applied before any matting is installed. Please also refer to project schedule, contract, and plan set (Erosion Control section).

Maintenance requirements: Erosion and undermining at local failures due to poor installation technique or velocities that surpass design velocities is common. Inspect to ensure good ground contact frequently. Repair washouts, breakages, dislocations or failures immediately.

Control measure: Straw Mulch

Implementation: During active construction, if used, and within 14 days of last disturbance. 2" - 3" thick; 5 bales per 1000 square feet or 2-3 tons per acre. Please also refer to project schedule, contract, and plan set (Erosion Control section).

Maintenance requirements: Maintain thickness of cover. Any area showing signs of erosion shall be re-mulched and/or protected by a blanket or net.

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7.7 Topsoil Conservation

Note: Contractor and PE complete this section as appropriate.

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.

D Conservation of topsoil is Infeasible:

Reason: to enter text.

Alternate method: to enter

D Conservation of topsoil is Feasible:

Conservation measure: to enter text.

Implementation: Click to enter text.

Maintenance requirements: to enter text.

Add other measures as needed.

7.8 Minimize Soil Compaction

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

D Not applicable to this project. Reason: to enter text.

If applicable:

Control measure: Distribute layer of soft vegetative top soil after compaction complete

Implementation: After soil compaction is complete and prior to revegetation efforts. Please also refer to project schedule, contract, and plan set (Erosion Control section).

Maintenance requirements: 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 erosion.

Add other measures as needed.

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…