SWPPP_WA_ERFO_2016(1)-20(1).pdf

Stormwater Pollution Prevention Plan s

For:

Mt. Baker Emergency Repairs 2016

WA ERFO 2016(1)-20(1}

Whatcom and Skagit Counties, Washington

Federal Highway Administration, Western Federal Lands Highway Division

Project Engineer: __________ _

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

Table of

. S\VPPP/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)

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 i~ Tab 1.

For Construction Activities at:

Project Name:

Project Site Location:

City, County, State, Zip Code:

SWPPP Prepared for:

Organization Name:

Address:

Telephone Number:

SWPPP Prepared by:

Name, Title:

Name, Title:

Company/Organization:

Address:

Telephone Number:

Mt. Baker Emergency Repairs 2016, WA ERFO 2016(1)-20(1)

Emergency repair sites in Whatcom and Skagit counties

Glacier, Whatcom and Skagit Counties, Washington, 98244

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: 10/25/2017

Estimated Construction Start Date: 06/28/2018 Estimated Construction Completion Date:

11/30/2018

Estimated Revegetation Start Date: 10/15/2018 Estimated Revegetation Completion Date:

10/15/2020

TAB 1:

TAB2:

TAB3:

TAB4:

TABS:

TAB6:

TAB7:

TAB8:

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)

SWPPP/ESCP NARRATIVE

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 Stormwate1· Permit

1.5 SWPPP Administrator

1.6 Permitting Authority for FHW A/WFLHD Projects

SECTION 2: PROJECT INFORMATION ..........••........•..•••.•...•..•.•••.•......•••..••.•..•.....•.•.........•... 4

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 Sou1·ces 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

7.2 Perimeter Controls

7 .3 Sediment Track-Out

7.4 Stockpiled Soil or Other Erodible Materials

7 .5 Minimize Dust

[i]

7.6 Minimize Disturbance of Steep Slopes

7.7 Topsoil Conservation

7.8 Minimize Soil Compaction

7.9 Storm Drain Inlets and Culvert lnlets

7.10 Constructed Stormwater Conveyance Channels and Culvert Outlets

7.11 Sediment Basins

7.12 Chemical Treatment

7.13 De\vatering Practices

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 Hazardous Spill Plan

8.2 Spills/Releases in Excess of Reportable Quantities

8.3 Equipment/Vehicle 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

9.2 Corrective Actions

SECTION 10: DELEGATIONS OF AUTHORITY

SECTION 11: STAFF TRAINING

SECTION 12: CERTIFICATION AND NOTIFICATION

[ii]

1.1 Operator(s):

· Organization Name:

·Address:

FHW A, Western Federal Lands Highway Division (WFLHD 610 East Fifth Street Vancouver, WA 98661-3801

Telephone Number: 360-619-7700

Contractor in all incomplete information following contract construction

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

Address:

Telephone Number:

Contractor and date prior to start of

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

1.2 Construction Site SWPPP Contact(s):

FHW A 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 EP NState NPDES Stormwater Permit is located in TAB 2. The Project NOI and EP NState 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 NWFLHD 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 documentation of the NOI is located in TAB 3.

The applicable EP NState NPDES permit is located in TAB 2

Idaho and Washington, Environmental Protection Agency EPA Region 10

Alaska Department of Environmental Conservation (ADEC)

Montana Department of Environmental Quality (MDEQ)

Oregon Department of Environmental Quality (ODEQ)

Wyoming Department of Environmental Quality (WDEQ)

[2]

State Permittin2 Authority Alaska • ADEC is permitting authority for most discharges within the state EXCEPT for:

• EPA is the permitting authority for the Denali National Park and Preserve and Metlakatla Indian Reservation.

Idaho Ill EPA is permitting authority for discharges within the state.

Montana • MDEQ is permitting authority for most discharges within the state EXCEPT for:

• EPA is the permitting authority for Indian Country lands within the state .

Oregon e ODEQ is permitting authority for most discharges within the state EXCEPT for:

Ill EPA is the permitting authority for Indian Country lands within the state.

Washington e WDE is pennitting authority for most discharges within the state EXCEPT for:

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

Wyoming Ill WDEQ is permitting authority for most discharges within the state EXCEPT for:

e EPA is the permitting authority for Indian Countrv lands within the state

The NOI for Alaska projects (through the ADEC) can be filed electronically at Alaska Pollutant Discharge Elimination System Program website. The completed SWPPP will be submitted to either ADEC or the Municipality based on the project type and operator described in the ADEC CGP.

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

The NOI for Montana can be filed through MDEQ following guidance at this website.

Oregon DEQ authorizes FHW NWFLHD projects under the programmatic 1200-CA permit, (expired in 12/31/2005, administratively extended)

The NOI for Wyoming can be filed electronically at this website.

(3]

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 of Intent (NOI) after the SWPPP is complete.

Project Name: Mt. Baker Emergency Repairs 2016

Project Site Location:

City, County, State, Zip Code:

Emergency repair sites in Whatcom and Skagit Counties

Glacier, Whatcom and Skagit Counties, Washington, 98244

Latitude/Longitude (Using one of three possible formats)1

Site 1: FSR 11 MP 25.8

Latitude: 48. 7476 ° N, Longitude: -121.55773 ° W

Site 2: FSR 31MP6.7

Latitude: 48.942513 ° N, Longitude: -121.941242 ° W

Site 3: FSR 39 MP 2.27

Latitude: 48.86363 ° N, Longitude: -121.9034 ° W

Site 4: FSR 1050 MP 1.7

Latitude: 48.58181 ° N, Longitude: -121.4235 ° W

Site 5: FSR 1144 MP 0.1

Latitude: 48.76536 ° N, Longitude: -121.671601 ° W

Site 6: FSR 1130 MP 4.1

Latitude: 48.765439 ° N, Longitude: -121.672324 ° W

Site 7: FSR 3140 MP 0.5

Latitude: 48.948631 °N, Longitude: -121.940244 ° W

Site 8: FSR 39 MP 5.1

Latitude: 48.828767 ° N, Longitude: -121.902981 ° W

The method used for determining latitude/longitude was: USGS Topographic map

Site 1: FSR 11 MP 25.8

Township: 38N

Range: lOE

Section: 30 Site 2: FSR 31 MP 6.7

Township: 40N

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

www.epa.gov/npdes/stormwater/latlong

(4]

Range:7E

Section: 19 Site 3: FSR 39 MP 2.27

Township: 39N

Range: 7E

Section: 16 Site 4: FSR 1050 MP 1.7

Township: 36N

Range: llE

Section: 30 Site 5: FSR 1144 MP 0.1

Township: 3 8N

Range: 9E

Section: 20 Site 6: FSR 1130 MP 4.1

Township: 38N

Range: 9E

Section: 20 Site 7: FSR 3140 MP 0.5

Township: 40N

Range: 7E

Section: 19 Site 8: FSR 39 MP 5.1

Township: 39N

Range:7E

Section: 33

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?" Yes

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

[5]

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:

The general setting is mountainous and forested, with numerous perennial and intermittent streams dissecting the hillslopes. The primary waterbodies in the project area are Baker River, Kidney Creek, Glacier Creek, and Falls Creek.

The upland terrestrial habitat is typical of the Douglas fir-oceanspray (Holodiscus discolor) habitat type described in Natural Vegetation of Oregon and Washington (Franklin and Dryness 1988) that typifies dry forest sites. The overstory is relatively open and dominated by Douglas fir. General cover types present in the action area include mixed conifer forest, riparian areas, disturbed roadside vegetation, and developed roads.

Generally, the understory includes a dense layer of shrubs, vines, and herbaceous species. The shrub layer is dominated by oceanspray, but includes a wide variety of other shrubs and vines: vine maple (Acer circinatum), beaked hazelnut (Corylus comuta), red huckleberry (Vaccinium parvifolium), thimbleberry (Rubus parviflorus), baldhip rose (Rosa gymnocarpa), dull Oregon grape (Mahonia nervosa), salal (Gaultheria shallon), and trailing blackberry (Rubus ursinus).Also present are Oregon ash (Fraxinus latifolia), Oregon white oak; Garry oak (Quercus garryana ), Pacific crabapple (Mal us jiLsca ), Pacific dogwood (Corn us nuttallii), Pacific willow (Salix lasiandra), red alder (Alnus rubra), Douglas-fir (Pseudotsuga menziesii), madrone; madrona (Arbutus menziesii), black cap raspberry (Rubus leucodermis), snowberry (Symphoricarpos albus), and goat's beard (Aruncus Sylvester).

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

[6] vegetated buffers.

Also see 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 TAB 6

Protected Natural Features:

Baker River, Kidney Creek, Glacier Creek, and Falls 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.

Mean Annual Precipitation at the Project Site: Approx. 102.96

2 Access the Natural Resources Conservation Service Web Soil Survey.

[7]

The frequency, intensity, and duration ofrainfall 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

3 Precipitation frequency for Wes tern States

[8]

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 11MP25.8

Restore roadway embankment and provide erosion protection using log retaining revetment.

Realign road as needed to facilitate revetment placement recognizing that a future FLTP project is planned to significantly relocate the road away from the river bank. Decommission the old roadway, as needed, adjacent to the relocation.

Site 2: FSR 31MP6.7

Restore traveled way and shoulder with MSE retaining wall.

Site 3: FSR 39 MP 2.27

Emergency Repairs: Remove debris to shoulder of road, open culvert, partially fill ditch width.

Permanent Repairs: Shift road alignment back to original alignment, restore dich width, replace damaged asphalt, restore scoured roadway embankment, replace6-foot of culvert to repair damaged culvert inlet.

Site 4: FSR 1050 MP 1.7

Replace culvert with AOP stmcture. Regrade the inlet to the new culve1i and create a fish passable channel. Provide riprap erosion protection. Restore the failed embankment and provide roadway surfacing.

Site 5: FSR 1144 MP 0.1 & Site 6: FSR 1130 MP 4.1

Restore Road 1144 roadbed with a reinforced soil embankment. Remove deposits on Road 1130 and resurface Road 1144 for 80-feet and Road 1130 for 100-feet.

Site 7: FSR 3140 MP 0.5

Restore embankment failure to reestablish a ML 3 road for recreation and fire access at MP 0.5.

Replace embankment failure with riprap embankment and replace lost aggregate. Bedrock bench will be built in 70 feet down the bank. Damaged culvert will be replaced.

Site 8: FSR 39 MP 5.1

Remove debris: 1) on the road, 2) 50-feet up the main channel, 3) 15-feet up the secondary channel, and 4) pile remaining at the shoulder from the emergency repairs. Remove one log 120-feet slope distance above the road (at the split of the debris flow) to facilitate water flow down the main channel. Extend the concrete ford with riprap for 20-feet and place riprap at the outlet of the ford.

The type or function of the project is: Choose an item.

Contractor and PE

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

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):

[9]

TBD 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

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: 57 .9 %

Runoff Coefficient BEFORE Construction:

Percent Impervious Are AFTER Construction:

Runoff Coefficient AFTER Construction:

[10]

0.367

57.9%

0.367

Units

1.91 Acres

1.19 Acres

g c ·;;:

1::

"O :l r:l1

[8] [8]

D [8]

D D D [8] [8]

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 "' s ..

!l o(j ... ~ .. c ·;:: (,,!) "O

... .c .:!J ·o ~ ~ :l ~ "' ... 1:: :a "' = .. ..Q

.. ... = .. 0 r:l1 z (Xi c. f--Q 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 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: Fill in all incomplete information following contract award date and prior to start of construction

!l c ... s ... =

.c =

- 0 Oi::...

x x x x x x

Construction and waste material expected to be stored on-site includes: (to be completed by contractor):

Material Storage Location

[12]

Vicinity maps are located in 5. Site maps and erosion and sediment control plan maps are located in 6.

(13]

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

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)

D D

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 flushings

~ Construction dewatering (uncontaminated)

~ Ground water or spring water (uncontaminated)

D 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

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

D Landscape irrigation

~ Discharges from emergency fire-fighting activities

D Fire hydrant flushings

D Uncontaminated air conditioning or compressor condensate

Control Measures

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

TAB6

(14]

I I

5.2 Receiving Waters:

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

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

Impaired Waters/TDMLs:

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

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

1. 1 Yes D No [gJ Yes 0No [gJ

2. Yes 0No [gJ Yes D No [gJ

3. Yes [gJ No D Temp. Yes 0No [gJ I

14. I Yes (g]No D Temp. and bacteria Yes D No [gJ

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:

Is this surface If yes, specify which Tier.

water designated as Tier 1,2 or 3?

1. Yes 0No [gJ Choose an item.

2. Yes D No [gJ Choose an item.

3. Yes 0No [gJ Choose an item.

4. Yes D No [gJ 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

[15] 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.

(16]

6.1 Endangered Species Protection

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

DA DB De ~D ~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 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

NOI.

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

(17]

Criterion E.

Criterion F.

correspondence 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:

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

11. 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 NOI.

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? Yes

D Dike

D Berm

D Catch Basin

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

~ 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)? Yes

[18]

Provide documentation for the basis of this determination. FS completed Section 106 consultation and surveys where necessary

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 to enter

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. SHPO concurrence letter for Site 11-25.8. Other sites are covered by a 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? 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.

[19]

7:

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 stmmwater.

• 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.

[20]

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 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.

rgj 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 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.

(21]

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:

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.

[22]

Add other measures as needed.

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 6.

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

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 TAB 6.

D Not applicable to this project. Reason: Click here 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.

[23]

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: 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

D Not applicable to this project. Reason: Click here 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.

[24]

7 .6 Minimize Disturbance of Steep Slopes

Desclibe how disturbance of steep slopes will be minimized. Desclibe 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.

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

If applicable:

Control measure: Erosion control blanket

Implementation: Duling active construction and in accordance with schedule and contract. Plior 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: Duling 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.

[25]

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: Click here to enter text.

Alternate method: Click here to enter text.

D Conservation of topsoil is Feasible:

Conservation measure: Click here to enter text.

Implementation: Click here to enter text.

Maintenance requirements: Click here 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: Click here 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 culvert inlets that discharge stormwater from the project into surface waters.

[26]

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

IZI Not applicable to this project. Reason: There are no stormwater drain inlets which are connected to separate storm sewer systems at any of the ERFO Repair Sites

If applicable:

The following BMPs are applicable to:

D Storm Drain Inlets

D Culvert Inlets

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).

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

0 Not applicable to this project.

If applicable:

Control measure: Fiber Roll Check Dams

Implementation: Following ditch construction. Please also refer to project schedule, contract, and plan set (Erosion Control section).

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

Add other measures as needed.

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.

[27)

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.

~ Not applicable to this project.

If applicable, type of sediment retention/infiltration used: Click here to enter text.

Design description: Click here to enter text.

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.

~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.

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.

~Not applicable to this project

If applicable:

Specific dewatering practice: Click here to enter text.

[28]

Implementation: Click here to enter text.

Maintenance: Click here to enter text.

Add other measures as needed.

7.14 Erosion Control and Stabilization

Commence temporary soil stabilization measures immediately if no further disturbance of an area of the site or stockpile is expected within the next 14 days.