SWPPP WA Pacific 2015(1) Scan.pdf

Stormwater Pollution Prevention Plan

SWPPP

For:

Public Access Enhancement to Willapa

National Wildlife Refuge, WA Pacific 2015(1)

Pacific County, WA

Federal Highway Administration, Western Federal Lands Highway Division

Project Engineer: __________ _

General Contractor:

T able o f C ontents

Table of Contents

SWPPP/ESCP TABS

TAB 1: SWPPP/ESCP Narrative

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

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

TAB 4: Delegation of Authority

TABS: Maps

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

TAB 7: Revegetation Plan (if applicable)

TAB 8: SWPPP Amendment Log

TAB 9: Inspection Reports

TAB 10: Corrective Action Log

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

TAB 12: Training/Certification Log

TAB 13: Government-Selected Waste, Borrow, Staging Sites

TAB 14: Grading and Stabilization Log

TAB 15: Hazardous Spill Plan or Spill Prevention, Control, and Countermeasures (SPCC)

TAB 16: Endangered Species Act (ESA) & Cultural Resources (Section 106) Documentation

TAB 17: NPDES Quality Assurance Checldist

TAB 18: NPDES Notice of Termination (NOT)

(~-,, Tab 1

CONTRACTOR:

Complete SWPPP narrative in accordance with contract ~07.0lA(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.

Construction Stormwater General Permit (CSWGP)

Stormwater Pollution Prevention Plan

(SWPPP)

for

Public Access Enhancement to Willapa National Wildlife Refuge, WA Pacific 2015(1)

Permittee / Owner Federal Highway Administration, Western Federal Lands Highway Division

Prepared for:

Department of Ecology

Southwest regional office (SWRO)

Developer U.S. Fish and Wildlife Service (USF&WS)

[Insert Project Site Location]

Operator I Contractor [Insert Name]

Certified Erosion and Sediment Control Lead (CESCL) Name

[Insert Name]

Name Holly Weiss-Racine

Organization [Insert Name]

SWPPP Prepared By Organization

Federal Highway Administration, Western Federal Lands Highway

Division

SWPPP Preparation Date November I 20 I 2019

Contact Phone Number [Insert Name]

Contact Phone Number (360)-619-7726

Project Construction Dates Activity / Phase Start Date End Date

Roadyway 0312512020 0412912020 Parkinq Lot 0413012020 05 / 0512020

Turf Establishment 05 / 0812020 05 / 11 / 2020 Fence Installation & Project 05/12/2020 05118 I 2020

Cleanup

GENERAL INSTRUCTIONS AND CAVEATS

This template presents the recommended structure and content for preparation of a Construction Stormwater General Permit (CSWGP) Stormwater Pollution Prevention Plan

(SWPPP).

The Department of Ecology's (Ecology) CSWGP requirements inform the structure and content of this SWPPP template; however, you must customize this template to reflect the conditions of your site.

A Construction Stormwater Site Inspection Form can be found on Ecology's website.

https://www.ecoiogv.wa.gov/Regulations-Permits/Perm its-certifications/Stormwater-general permits/ Construction-stormwater-permit

Table of Contents

Project Information (1.0)

Existing Conditions (1.1)

Critical Areas (1.1.1) wetlands, streams, high erosion risk, steep or difficult to stabilize slopes):

Proposed Construction Activities (1.2)

Construction Stormwater Best Management Practices (BMPs) (2.0)

The 12 Elements (2.1)

Element 1: Preserve Vegetation/ Mark Clearing Limits (2.1.1)

Element 2: Establish Construction Access (2.1.2)

Element 3: Control Flow Rates (2.1.3)

Element 4: Install Sediment Controls (2.1.4) ....................... :

Element S: Stabilize Soils (2.1.5)

Element 6: Protect Slopes (2.1.6)

Element 7: Protect Drain Inlets (2.1.7)

Element 8: Stabilize Channels and Outlets (2.1.8)

Element 9: Control Pollutants (2.1.9)

Element 10: Control Dewatering (2.1.10)

Element 11: Maintain BMPs (2.1.11)

Element 12: Manage the Project (2.1.12)

Element 13: Protect Low Impact Development (LID) BMPs (2.1.13)

Monitoring and Sampling Requirements (4.0)

Site Inspection (4.1)

Stormwater Quality Sampling (4.2)

Turbidity Sampling (4.2.1) pH Sampling (4.2.2)

Discharges to 303(d) or Total Maximum Daily Load (TMDL) Waterbodies (5.0)

303(d) Listed Waterbodies (5.1)

TMDL Waterbodies (5.2)

Reporting and Record Keeping (6.0)

Record Keeping (6.1)

Site Log Book (6.1.1)

Records Retention (6.1.2)

Updating the SWPPP (6.1.3)

Reporting (6.2)

Discharge Monitoring Reports (6.2.1)

Notification of Noncompliance (6.2.2)

Appendix/Glossary

Tab 1. SWPPP/ESCP Narrative

Tab 2. Construction Stormwater General Permit (CSWGP)

Tab 3. Notice of Intent/ State Acknowlegement

Tab 4. Delegation of Authority

Tab 5. Site Map

Tab 6. BMP Detail

Tab 7. Revegatation Plan (if Applicable)

Tab 8. SWPPP Amendment Log

Tab 9. Site Inspection Form

Tab 10. Corrective Action Log

Tab 11. Water Quality Monitoring, Reporting Requirements, and Reports

Tab 12. Training/Certification Log

Tab 13. Government - Selected Waste, Borrow, Staging Sites

Tab 14. Grading and Stabilization Log

Tab 15. Hazardous Spill Plan or Spill Prevention, Control, and Countermeasures (SPCC)

Tab 16. Correspondence (ESA, Section 106, Local Government)

Tab 17. NPDES Quality Assurance Checklist

List of Acronyms and Abbreviations

Acronym I Abbreviation

303(d)

BFO

BMP(s)

CESCL

CO2

CRO

CSWGP

CWA

DMR

DO

Ecology

EPA

ERO

ERTS

ESC

GULD

NPDES

NTU

NWRO

pH

RCW

SPCC

SU

SWMMEW

SWMMWW

SWPPP

TESC

SWRO

TMDL

VFO

WAC

WSDOT

WWHM

Explanation

Section of the Clean Water Act pertaining to Impaired Waterbodies

Bellingham Field Office of the Department of Ecology

Best Management Practice(s)

Certified Erosion and Sediment Control Lead

Carbon Dioxide

Central Regional Office of the Department of Ecology

Construction Stormwater General Permit

Clean Water Act

Discharge Monitoring Report

Dissolved Oxygen

Washington State Department of Ecology

United States Environmental Protection Agency

Eastern Regional Office of the Department of Ecology

Environmental Report Tracking System

Erosion and Sediment Control

General Use Level Designation

National Pollutant Discharge Elimination System

Nephelometric Turbidity Units

Northwest Regional Office of the Department of Ecology

Power of Hydrogen

Revised Code of Washington

Spill Prevention, Control, and Countermeasure

Standard Units

Stormwater Management Manual for Eastern Washington

Stormwater Management Manual for Western Washington

Stormwater Pollution Prevention Plan

Temporary Erosion and Sediment Control

Southwest Regional Office of the Department of Ecology

Total Maximum Daily Load

Vancouver Field Office of the Department of Ecology

Washington Administrative Code

Washington Department of Transportation

Western Washington Hydrology Model

Pro,iect Information (LO) Project/Site Name: PUBLIC ACCESS ENHANCEMENT TO WILLAPA NATIONAL WILDLIFE

REFUGE

Street/Location (Latitude, Longitude): 46.372109, -124.01231 City: Long Beach State: Washington Zip code: 98631 Subdivision:

Receiving waterbody: Tributaries to Parker and Tarlatt Slough

Existing Conditions (1.1) Total acreage (including support activities such as off-site equipment staging yards, material storage areas, borrow areas).

Total acreage: 3.5 acres

Disturbed acreage: 2.6 acres Existing structures: 0 Landscape topography: Level Terrain

Drainage patterns: There are no water bodies within 1,000 feet of the project.

Stormwater from project area will flow into Parker Slough and its tributaries

Existing Vegetation: The majority of the project site is an existing asphalt lot, with road wideningand road that will be paved. There is 0% veg cover in these areas.

Critical Areas (1.1.1) wetlands, streams, high erosion risk, steep or difficult to stabilize slopes):

Wetlands: Estuarine, Marine and Freshwater Wetlands may be present accordingto National Wetlands Inventory Maper. Must confirm conditions on site

Erosion Risk: Based on Web Soil Survey arroidability ranges from moderate to severe erodibility. Must confirm conditions on site.

Refer to Tab 5 of SWPPP Binder for Maps

List of known impairments for 303(d) listed or Total Maximum Daily Load (TMDL) for the receiving waterbody: Not Listed

Table 1 includes a list of suspected and/or known contaminants associated with the construction activity.

Contractor I PE update list below Table 1 - Summary of Site Pollutant Constituents

Constituent Location Depth Concentration (Pollutant)

Description of site development (example: subdivision):

The Riekkola, Porter Point and Lewis Units are accessed using 67th Place an approximately 2.4 mile long narrow paved road. These Units are a popular destination for Refuge visitors to participate in a variety of hunting and wildlife viewing opportunities. The east 0.4 mile section of road is bound by Refuge land on either side. Much of the road top has disintegrated with large potholes extending the full width of the road. Compounded with the condition of the road is the failing culvert in Dohman Creek. Both ends of this culvert have collapsed resulting in erosion around the structure from the collapse and water over-topping the road. If left as is the structure will fail cutting off all access to these three Refuge Units, Refuge shop facilities and equipment, as well as access to private forest timberlands and a reservoir for the City of Long Beach. Without resurfacing the road will continue to deteriorate and further increase the potential of accidents and vehicle damage.

The integrity of the roadway to serve the citizens of Pacific County is of highest priority to the County. Evacuation of citizens, r'io matter the nature of the event, is of prime importance. 67th Place has been identified as an evacuation route and

"Designated Assembly Area" in the event a tsunami since it provides the only access for travel through a higher elevation and is relatively close to the populated areas of the Long Beach Peninsula. The condition of the road surface and culvert failure could impede the evacuation process.

Interest in wildlife oriented use on Refuge lands is expected to increase with the completion of the Refuge's South Bay Trail and from increased public awareness and interest in birding, hiking, hunting, boating, and other recreation activities. The current status of parking and access limits the ability to accommodate the expected higher public use. The Pacific County Economic Development Strategy has identified a "Beach-to-Bay" trail that would connect the Pacific Ocean and Willapa Bay for hiking and bike riding. Creating vehicle parking, a place to safely turn vehicles • around, providing small car top boat access and information kiosk/sign would trail across the Long Beach Peninsula to the Refuge's South Bay Trail.

Description of construction activities (example: site preparation, demolition, excavation):

This project will enhance safety and public access to Willapa National Wildlife Refuge

(Refuge) through the replacement of a failing culvert; and repair of deteriorating county road and designated tsunami evacuation route.

The proposed project will focus on 67th Place. Construction activities will consist of rebuilding approximately 0.41 miles of 67th Place road and paving and widen the road from the end of the 67th place project to the new Refuge HQ (See figure below) .. A hydraulic analysis (2010) and fish survey of Dohman Creek has been completed. Due to the reservoir upstream and the tidegates located downstream at

Willapa Bay, Dohman Creek is not a fish bearing stream and the new culverts are not required to be fish friendly.

Description of site drainage including flow from and onto adjacent properties. Site Map in Tab 5:

There are no water bodies within 1,000 feet of the project. Stormwater from project area will flow into Parker Slough and its tributaries

Description of final stabilization (example: extent of revegetation, paving, landscaping):

Final stabilization will be reached after paving has been completed using partner approved seed mix.

Contaminated Site Information:

Proposed activities regarding contaminated soils or groundwater (example: on-site treatment system, authorized sanitary sewer discharge):

If applicable, contaminated soils will be taken to an appropriate waste disposal site and contaminated groundwater will be taken to an appropriate water treatment facility off site.

Construction Storrnvvater Best Managernent Practices (B1'v1Ps) (2.0) Contractor I PE add additional ESC devices/practices as needed

The SWPPP is a living document reflecting current conditions and changes throughout the life of the project. These changes may be informal (i.e. hand-written notes and deletions). Update the SWPPP when the CESCL has noted a deficiency in BMPs or deviation from original design.

The 12 Elements (2.1)

Element 1: Preserve Vegetation/ Mark Clearing Limits (2.1.1) Staff Member Responsible for Application/Maintenance:

List and describe BMPs:

Control measure: Fiber rolls

Implementation: All fiber rolls will be installed prior to any ground disturbing activities.

Maintenance requirements: Sediment will be removed from fiber roll perimeter controls before deposits reach 50% of the above ground height. Fiber rolls will not be removed until vegetation is satisfactorily established.

Control measure: Silt Fence placed around disturbed areas

Implementation: Project kick-off and as project advances prior to ground disturbing activities

Maintenance requirements: Periodic inspections in accordance with CGP to ensure there is no overtopping, rilling, or other erosive conditions

Control Measure: Straw Mulch

Implementation: Used during active construction if needed. It will be implemented to maintain thickness of cover.

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

Control Measure: Preserving existing vegetation

Implementation: As project involves primarily fill, and not much excavation. Topsoil will not be required to be preserved

Element 2: Establish Construction Access (2.1.2) 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 TAB 6.

Slaff Member Responsible for Application/Maintenance:

Control measure: Washing without detergents or solvents within perimeter

Implementation: If used, during active construction as necessary

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

Element 3: Control Flow Rates (2.1.3) 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.

Will you construct stormwater retention and/or detention facilities?

Yes No

Will you use permanent infiltration ponds or other low impact development (example: rain gardens, bio-retention, porous pavement) to control flow during construction?

Yes No

Control measure: Fiber roll check dams

Implementation: Following ditch construction.

Maintenance requirements: Sediment will be removed from check dams before deposits reach 50% of the above ground height. Check dams will not be removed until vegetation is satisfactorily established.

Add other measures as needed.

Element 4: Install Sediment Controls (2.1.4)

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.

Maintenance requirements: Sediment will be removed from fiber roll perimeter controls before deposits reach 50% of the above ground height. Fiber rolls will not be removed until vegetation is satisfactorily established.

Control measure: Silt Fence placed around disturbed areas

Implementation: Project kick-off and as project advances prior to ground disturbing activities

Maintenance requirements: Periodic inspections in accordance with CGP to ensure there is no overtopping, rilling, or other erosive conditions

Element 5: Stabilize Soils (2.1.5) Control measure: Distribute layer of soft vegetative top soil after compaction complete

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

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.

West of the Cascade Mountains Crest

Season Dates Number of Days Soils Can be Left Exposed During the Dry Season May 1 - September 30 7 days During the Wet Season October 1 - April 30 2 days

Soils must be stabilized at the end of the shift before a holiday or weekend if needed based on the weather forecast.

Anticipated project dates:

Start date: 3/20/20 End date: 5/19/2020

Will you construct during the wet season?

Yes No

Element 6: Protect Slopes (2.1.6) , <. --✓ •• ·,, '.,. <";\/ ,; , ,,_>·< ',-•,-.,:·,., >,. <;·;,,•c•--- '~L-•,,,.Jc t;"'", ./,' ,.

.tieic·~Jz:·hoW:YRll\ ..

Will steep slopes be present at the site during construction?

Yes No

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. The following controls will be implemented to minimize sediment discharges from slope disturbances.

Control measure: Silt Fence and/or fiber rolls placed around disturbed areas

SCR 157 and F sheets

Implementation: During active construction, if used

Maintenance requirements: Periodic inspections in accordance with CGP to ensure there is no overtopping, rilling, or other erosive conditions

Control measure: Rolled erosion control product

Implementation: During active construction, if used

Maintenance requirements: Inspection will ensure good contact with the ground is achieved and maintained. Damaged areas will be repaired and properly secured.

Control measure: Straw Mulch and/or shredded woody material

Implementation: During active construction, if used

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

Element 7: Inlets (2.1.7) Control measure: All existing culverts that will remain must be protected in place to maintain full functionality of existing drainage patterns. Storm water runoff from construction site must be passed through sediment control BMPs as indicated on erosion control plans, standard details, and compliant with NPDES-CGP permit.

Implementation: Install perimeter silt fence and/or fiber rolls to intercept construction stormwater before discharging to receiving waterbody.

Maintenance requirements: Clean, or remove and replace, the protection measures as sediment accumulates, the filter fabric becomes clogged, and/or performance is compromised. Where there is evidence of sediment accumulation adjacent to the protection measure, Contractor must remove the deposited sediment by the end of the same work day in which it is found or by the end of the following work day if removal by the same work day is not feasible

Element 8: Stabilize Channels and Outlets (2.1.8)

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.

□ Not applicable to this project.

If applicable:

Control measure: Fiber roll check dams

Implementation: Following ditch construction.

Maintenance requirements: Sediment will be removed from check dams before deposits reach 50% of the above ground height. Check dams will not be removed until vegetation is satisfactorily established.

Provide stabilization, including armoring material, adequate to prevent erosion of outlets, adjacent stream banks, slopes, and downstream reaches, will be installed at the outlets of all conveyance systems.

Element 9: Control Pollutants (2.1.9) The following pollutants are anticipated to be present on-site:

Table 2 - Pollutants Pollutant (and source, if applicable) [List pollutants here]

Contractor and PE

Note: Update table during construction ..

Measures will be put in place and maintained to prevent the discharge of solid materials to receiving waters, except as authorized by a permit issued under the §404 permit.

• Designated trash and bulk waste-collection areas on-site (location of areas are shown and updated on plan sheets, 6).

• Litter and debris from the construction will be cleaned up on a daily basis.

• Waste-collection areas will be located away from streets, gutters, watercourses, and storm drains. Secondary containment around waste collection areas will be implemented if needed to further minimize the likelihood of contaminated discharges.

• Portable restrooms will be located away from streets, gutters, watercourses, and storm drains (location of areas are shown and updated on plan sheets, 6). Secondary containment around waste collection areas will be implemented if needed to further minimize the likelihood of contaminated discharges.

• Portable restrooms will have tie-downs or stake downs in areas of high winds or susceptibility to vandalism.

• Hazardous waste-collection areas will be designated on-site (location of areas are shown and updated on plan sheets, ' 6). Secondary containment around waste collection areas will be implemented if needed to further minimize the likelihood of contaminated discharges.

• Hazardous waste containers will be routinely inspected to ensure that all containers are labeled properly and that no leaks are present.

Implementation: Throughout construction.

Will maintenance, fueling, and/or repair of heavy equipment and vehicles occur on-site?

Yes No

On-site fueling areas will have a spill kit present, visible, and maintained. Employees and subcontractors will receive training regarding equipment/vehicle fueling and maintenance practices, including proper fueling procedures, proper use of pumps, emergency shutoff valves (training efforts documented in 12).

On-site vehicles and equipment will be inspected daily for leaks, equipment damage, and other service problems.

Designate vehicle/equipment service will be marked and the areas will be located away from drainage facilities and watercourses to prevent stormwater run-on and runoff. Designated washout areas will be shown on the SWPPP plan sheets (T 6 ).

Drip pans, drip cloths, or absorbent pads will be used when replacing spent fluids. All spent fluids will be collected and store in appropriate labeled containers in the proper storage areas.

Implementation: Prior to construction activities and throughout construction.

Will wheel wash or tire bath system BMPs be used during construction?

Yes No

Equipment/vehicle washing and allowable non-stormwater will be controlled using procedures and practices include using off-site facilities; washing in designated, contained areas only;

eliminating discharges to the storm drain by infiltrating the wash water or routing to the sanitary sewer. The locations of equipment/vehicle washing areas, storm drains, tributary drainage areas, and surface waterbodies on or near the site are shown and updated on the SWPPP plan sheets (T C).

Will pH-modifying sources be present on-site?

Table 3 - pH-Modifying Sources X None X Bulk cement

Cement kiln dust Fly ash

X Other cementitious materials New concrete washing or curing waters Waste streams generated from concrete grinding and sawing Exposed aggregate processes Dewatering concrete vaults Concrete pumping and mixer washout waters

Recycled concrete Other (i.e. calcium lignosulfate) [please describe]

Concrete washout areas on-site, designate specific washout areas, and design facilities to handle anticipated washout water will be installed. Washout areas will also be provided for paint and stucco operations as applicable. Washout areas will be located at least 50 yards away from storm drains and watercourses. If this is not possible, prefabricated washout containers will be used. Alternatively, constructed washout areas may be used either by digging a pit and lining it with 10 mil plastic sheeting or creating an aboveground structure from straw bales or sandbags with a plastic liner. Designate washout areas will be shown on the SWPP plan sheets (T 6).

The following precautions will be implemented:

• Concrete trucks or equipment will not be washed out into storm drains, streets, gutters, uncontained areas, or any watercourses.

• Washout areas will be established prior to commencing the activity and their locations advertise with signs or delineators.

• Adequate containment for the amount of wash water that will be used will be provided.

• Washout structures will be routinely inspected to detect leaks or tears and to identify when materials need to be removed.

• Materials will be disposed of properly (for example, allow the water to evaporate and to recycle the hardened concrete).

• Inspections will include looking for evidence that contractors are using the washout areas and not dumping materials onto the ground or into drainage facilities. If the washout areas are not being used regularly, additional sign age will be posted or the facility will be relocated to a more convenient location.

• Employees and subcontractors will receive training regarding designated washout areas, including proper handling and storage practices (training efforts documented in ).

Implementation: Prior to construction activities and throughout construction

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

Concrete trucks must not be washed out onto the ground, or into storm drains, open ditches, streets, or streams. Excess concrete must not be dumped on-site, except in designated concrete washout areas with appropriate BMPs installed.

Element 10: Control Dewatering (2.1.10) 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.

IZI Not applicable to this project

Table 4 - Dewatering BMPs Infiltration

Transport off-site in a vehicle (vacuum truck for legal disposal) Ecology-approved on-site chemical treatment or other suitable treatment technologies Sanitary or combined sewer discharge with local sewer district approval (last resort)

Use of sedimentation bag with discharge to ditch or swale (small volumes of localized dewaterina)

Element 11: Maintain BMPs (2.1.11) All temporary and permanent Erosion and Sediment Control (ESC) BMPs shall be maintained and repaired as needed to ensure continued performance of their intended function.

Maintenance and repair shall be conducted in accordance with each particular BMP specification (see Volume II of the SWMMWW or Chapter 7 of the SWMMEW).

Visual monitoring of all BMPs installed at the site will be conducted at least once every calendar week and within 24 hours of any stormwater or non-stormwater discharge from the site. If the site becomes inactive and is temporarily stabilized, the inspection frequency may be reduced to once every calendar month.

All temporary ESC BMPs shall be removed within 30 days after final site stabilization is achieved or after the temporary BMPs are no longer needed.

Trapped sediment shall be stabilized on-site or removed. Disturbed soil resulting from removal of either BMPs or vegetation shall be permanently stabilized.

Additionally, protection must be provided for all BMPs installed for the permanent control of stormwater from sediment and compaction. BMPs that are to remain in place following completion of construction shall be examined and restored to full operating condition. If sediment enters these BMPs during construction, the sediment shall be removed and the facility shall be returned to conditions specified in the construction documents.

12: Manage the Project (2.1.12) The project will be managed based on the following principles:

• Projects will be phased to the maximum extent practicable and seasonal work limitations will be taken into account.

• Inspection and monitoring:

o Inspection, maintenance and repair of all BMPs will occur as needed to ensure performance of their intended function.

o Site inspections and monitoring will be conducted in accordance with Special Condition S4 of the CSWGP. Sampling locations are indicated on the Site Map.

Sampling station(s) are located in accordance with applicable requirements of the CSWGP.

• Maintain an updated SWPPP.

o The SWPPP will be updated, maintained, and implemented in accordance with

Special Conditions S3, S4, and S9 of the CSWGP.

As site work progresses the SWPPP will be modified routinely to reflect changing site conditions. The SWPPP will be reviewed monthly to ensure the content is current.

Table 5 - Management X Design the project to fit the existing topography, soils, and drainage patterns X Emphasize erosion control rather than sediment control X Minimize the extent and duration of the area exposed X Keep runoff velocities low

X Retain sediment on-site X Thoroughly monitor site and maintain all ESC measures X Schedule major earthwork during the dry season

Other (please describe)

Table 6- BMP Implementation Schedule

Contractor and PE Fill out the following Table

Phase of Construction Stormwater BMPs Project

[Insert construction [Insert BMP] activity]

Stormwater BM Ps

Date Wet/Dry Season

[MM/DDNYYY] [Insert Season]

Date Wet/Dry Season

Phase of Construction Project

[Insert construction [Insert BMPJ [MM/DDNYYYJ [Insert activity] Season]

Element 13: Low Impact Development (LID) BMPs (2.1.13) Not applicable, no Low Impact Development BMP's within project impact.

Pollution Prevention Team (3.0)

Contractor and PE Fill out the following Table Table 7-Team Information

Title Certified Erosion and [Insert Name] Sediment Control Lead

(CESCL)

Resident Engineer Emergency Ecology Contact Emergency Permittee/ Owner Contact Non-Emergency Owner Contact Monitoring Personnel

Name(s)

Ecology Regional Office [Insert Regional Office]

Phone Number [Insert Number]

[Insert General Number]

Nionitoring and San1pling Requiren1ents ( 4.0) Monitoring includes visual inspection, sampling for water quality parameters of concern, and documentation of the inspection and sampling findings in a site log book. A site log book will be maintained for all on-site construction activities and will include:

• A record of the implementation of the SWPPP and other permit requirements

• Site inspections

• Stormwater sampling data

File a blank form under Tab 11.

The site log book must be maintained on-site within reasonable access to the site and be made available upon request to Ecology or the local jurisdiction.

Numeric effluent limits may be required for certain discharges to 303(d) listed waterbodies. See CSWGP Special Condition S8 and Section 5 of this template.

Complete the following paragraph for sites that discharge to impaired waterbodies for fine sediment, turbidit , phosphorus, or pH:

S''it-p f11spec•1-1· ,.., r,1 11

tl. ...... .:..1 ... ..-L-U·!.i \.--r.1)

Site inspections will be conducted at least once every calendar week and within 24 hours following any discharge from the site. For sites that are temporarily stabilized and inactive, the required frequency is reduced to once per calendar month.

The discharge point(s) are indicated on the Site Map (see Tab 5) and in accordance with the applicable requirements ofthe CSWGP.

Stormwater Quality Sampling ( 4.2)

Turbidity Sampling ( 4.2.1) Requirements include calibrated turbidity meter or transparency tube to sample site discharges for compliance with the CSWGP. Sampling will be conducted at all discharge points at least once per calendar week.

Method for sampling turbidity:

Table 8 - Turbidity Sampling Method Turbidity Meter/Turbidimeter (required for disturbances 5 acres or greater in size)

X Transparency Tube (option for disturbances less than 1 acre and up to 5 acres in size) The benchmark for turbidity value is 25 nephelometric turbidity units (NTU) and a transparency less than 33 centimeters.

If the discharge's turbidity is 26 to 249 NTU or the transparency is less than 33 cm but equal to or greater than 6 cm, the following steps will be conducted:

1. Review the SWPPP for compliance with Special Condition S9. Make appropriate revisions within 7 days of the date the discharge exceeded the benchmark.

2. Immediately begin the process to fully implement and maintain appropriate source control and/or treatment BMPs as soon as possible. Address the problems within 10 days of the date the discharge exceeded the benchmark. If installation of necessary treatment BMPs is not feasible within 10 days, Ecology may approve additional time when the Permittee requests an extension within the initial 10-day response period.

3. Document BMP implementation and maintenance in the site log book.

If the turbidity exceeds 250 NTU or the transparency is 6 cm or less at any time, the following steps will be conducted:

1. Telephone or submit an electronic report to the applicable Ecology Region's Environmental Report Tracking System (ERTS) within 24 hours.

https://www.ecology.wa.gov/About-us/Get-involved/Report-an-environmental-issue

• Southwest Region (Clallam, Clark, Cowlitz, Grays Harbor, Jefferson, Lewis, Mason, Pacific, Pierce, Skamania, Thurston, Wahkiakum,): (360) 407-6300

2. Immediately begin the process to fully implement and maintain appropriate source control and/or treatment BMPs as soon as possible. Address the problems within 1 0 days of the date the discharge exceeded the benchmark. If installation of necessary treatment BMPs is not feasible within 10 days, Ecology may approve additional time when the Permittee requests an extension within the initial 10-day response period

3. Document BMP implementation and maintenance in the site log book.

4. Continue to sample discharges daily until one of the following is true:

• Turbidity is 25 NTU (or lower).

• Transparency is 33 cm (or greater).

• Compliance with the water quality limit fqr turbidity is achieved.

o 1 - 5 NTU over background turbidity, if background is less than 50 NTU o 1% - 10% over background turbidity, if background is 50 NTU or greater

• The discharge stops or is eliminated.

pH Sampling ( 4.2.2) Contractor and PE

Select appropriate monitoring method with respect to site conditions.

pH monitoring is required for "Significant concrete work" (i.e. greater than 1000 cubic yards poured concrete or recycled concrete over the life of the project). The use of engineered soils (soil amendments including but not limited to Portland cement-treated base [CTB], cement kiln dust [CKD] or fly ash) also requires pH monitoring.

For significant concrete work, pH sampling will start the first day concrete is poured and continue until it is cured, typically three (3) weeks after the last pour.

For engineered soils and recycled concrete, pH sampling begins when engineered soils or recycled concrete are first exposed to precipitation and continues until the area is fully stabilized.

If the measured pH is 8.5 or greater, the following measures will be taken:

1. Prevent high pH water from entering storm sewer systems or surface water.

2. Adjust or neutralize the high pH water to the range of 6.5 to 8.5 su using appropriate technology such as carbon dioxide (CO2) sparging (liquid or dry ice).

3. Written approval will be obtained from Ecology prior to the use of chemical treatment other than CO2 sparging or dry ice.

Method for sampling pH:

Table 8- pH Sampling Method pH meter pH test kit Wide range pH indicator paper

Discharges to 303(d) or Total tv1axin1um Daiiy Load (TJv1DL)

Waterbodies (.5.0)

303(d) Listed \,Vaterbodies (5.1) Is the receiving water 303(d) (Category 5) listed for turbidity, fine sediment, phosphorus, or pH?

Yes No

•T1•~v101 'fJ, t rb rli,, re; 2' , _ -'-' .vcLe, Ou,t::S ._~. _J

Not Applicable

Discharges to TMDL receiving waterbodies will meet in-stream water quality criteria at the point of discharge.

Reporting and Record Keeping ( 6.0) Record Keeping (6.1)

Site Log Book (6.1.1) A site log book will be maintained for all on-site construction activities and will include:

• A record of the implementation of the SWPPP and other permit requirements

• Site inspections

• Sample logs

Records Retention (6.1.2) Records will be retained during the life of the project and for a minimum of three (3) years following the termination of permit coverage in accordance with Special Condition S5.C of the

CSWGP.

Permit documentation to be retained on-site:

• CSWGP

• Permit Coverage Letter

• SWPPP

• Site Log Book

Permit documentation will be provided within 14 days of receipt of a written request from Ecology. A copy of the SWPPP or access to the SWPPP will be provided to the pu_blic when requested in writing in accordance with Special Condition S5.G.2.b of the CSWGP.

Updating the SWPPP (6.1.3) The SWPPP will be modified if:

• Found ineffective in eliminating or significantly minimizing pollutants in stormwater discharges from the site.

• There is a change in design, construction, operation, or maintenance at the construction site that has, or could have, a significant effect on the discharge of pollutants to waters of the State.

The SWPPP will be modified within seven (7) days if inspection(s) or investigation(s) determine additional or modified BMPs are necessary for compliance. An updated timeline for BMP implementation will be prepared.

Record amendments to the SWPPP in Tab 8 of the SWPPP Binder

Reporting ( 6.2)

Discharge Monitoring Reports (6.2.1) Cumulative soil disturbance is less than one (1) acre; therefore, Discharge Monitoring Reports (DMRs) will not be submitted to Ecology because water quality sampling is not being conducted at the site.

Notification of Noncompliance (6.2.2) If any of the terms and conditions of the permit is not met, and the resulting noncompliance may cause a threat to human health or the environment, the following actions will be taken:

1. Ecology will be notified within 24-hours of the failure to comply by calling the applicable Regional office ERTS phone number (Regional office numbers listed below).

2. Immediate action will be taken to prevent the discharge/pollution or otherwise stop or correct the noncompliance. If applicable, sampling and analysis of any noncompliance will be repeated immediately and the results submitted to Ecology within five (5) days of becoming aware of the violation.

3. A detailed written report describing the noncompliance will be submitted to Ecology within five (5) days, unless requested earlier by Ecology.

Anytime turbidity sampling indicates turbidity is 250 NTUs or greater, or water transparency is 6 cm or less, the Ecology Regional office will be notified by phone within 24 hours of analysis as required by Special Condition S5.A of the CSWGP.

• Southwest Region at (360) 407-6300 for Clallam, Clark, Cowlitz, Grays Harbor, Jefferson, Lewis, Mason, Pacific, Pierce, Skamania, Thurston, or Wahkiakum

Include the following information:

1. Your name and I Phone number

2. Permit number

3. City/ County of project

4. Sample results

5. Date I Time of call

6. Date I Time of sample

7. Project name

In accordance with Special Condition S4.D.5.b of the CSWGP, the Ecology Regional office will be notified if chemical treatment other than CO2 sparging is planned for adjustment of high pH water.

A d

• tr,t ppen IX/ Glossary

Tab 1. Sv\/PPP /ESCP Narrative

Tab 2. Construction Stormwater General Pen11it (CS\NGP)

Tab 3. Notice of Intent/ State Acknowlegeinent

Tab 4. Delegation of Authority

Tab 5, Site Map

Tab 6. Bf\1P Detail

Tab 7. Revegatation Plan (if Applicable)

Tab 8. SV\lPPP An1end111ent Log

,.,.. 1 ., s· , . .-. 1 ao :J. 1te 1nspect!On ronn

Tab 1 L VVater Quality Monitoring, Reporting Requiren1ents, and

Reports

Tab 12. Training/Certification Log

Tab 13. Govern1nent - Selected Waste, Borrow, Staging Sites

Tab 14. Grading and Stabilization Log

Tab 15. Hazardous Spill Plan or Spill Prevention, Control, and

Countermeasures (SPCC)

Tab 16. Correspondence (ESA, Section 106, Local Government)

Tab 17. NPDES Quality Assurance Checklist

Operators Delegations of Authority for the purpose of overseeing compliance with environmental requirements, including the NPDES Construction General Permit (CGP), at the construction site is documented in TAB 4.

The designee is authorized to sign any reports, stormwater pollution prevention plans (SWPPP) modifications and all other documents required by the CGP.

Prior to earth-disturbing activities or pollutant-generating activities, the following construction personnel will receive training to understand the requirements of the EPA/State NPDES stormwater permit and their specific responsibilities:

• Personnel responsible for installation, maintenance, or repair of stormwater control BMPs;

• Personnel responsible for the application and storage of treatment chemicals (if applicable};

• Personnel responsible for conducting inspections;

• Personnel responsible for taking corrective actions

The General Contractor will provide an Erosion Control Supervisor (ECS} for the project who meets one of the following criteria:

(a) Alaska Certified Erosion and Sediment Control Lead (AK-CESCL};

(b) Idaho Water Pollution Control Manager (WPCM}

(c) Montana Department of Environmental Quality (DEQ} SWPPP Administrator

(d) Oregon Department of Transportation (ODOT} Certified Erosion Sediment Control Manager

(ESCM}

(e) Washington State Certified Erosion and Sediment Control Lead (CESCL);

(f) Other State DOT-Approved Erosion and Sediment Control Certification

(c) Certified Professional in Erosion and Sediment Control (CPESC);

(d) Certified Professional in Storm Water Quality (CPSWQ};

(e) Certified Erosion, Sediment and Storm Water Inspector (CESSWI);

(f) National Institute for Certification in Engineering Technologies (NICET) Erosion and Sediment Control Level 3 or 4; and .

(g) Certified Inspector of Sediment and Erosion Control (CISEC).

All training and certifications are documented in TAB 12.

"I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations."

For FHWA, Western Federal Lands Highway Division:

Name: .=5 <! _,, •-;---;-- S.1.-t , .,.,, L 1 ,:;,J, iE Title: M;.li #4-1i-1-6;£.,C_

Signature:~:£~- Date: ·z / '7 /z.o

For General Contractor (Alaska, Idaho, and Washington projects only, SCR 107.0lA):

Name: Title:

Signature: Date:

If Applicable:

Project SWPPP of Record Approval following General Contractor modifications.

For FHWA, Western Federal Lands Highway Division:

Name: Title:

Signature: Date:

N

2017 Construction General Permit (CGP) (as modified)

National Pollutant Discharge Elimination System General Permit for Discharges from

Construction Activities ( as modified)

In compliance with the provisions of the Clean Water Act, 33 U.S.C. §1251 et. seq., (hereafter CWA), as amended by the Water Quality Act of 1987, P .L. 100-4, "operators" of construction activities (defined in Appendix A) that meet the requirements of Part 1.1 of this National Pollutant Discharge Elimination System (NPDES) general permit, are authorized to discharge pollutants in accordance with the effluent limitations and conditions set forth herein. Permit coverage is required from the "commencement of construction activities" (see Appendix A) until one of the conditions for terminating CGP coverage has been met (see Part 8.2).

This permit becomes effective on June 27, 2019.

This permit and the authorization to discharge expire at 11 :59pm, February 16, 2022.

Signed and issued this 14th day of May 2019

Deborah Szaro, Acting Regional Administrator, EPA Region 1.

Signed and issued this 14th day of May 2019

Jeff Gratz, Deputy Director, Water Division, EPA Region 2.

Signed and issued this 14th day of May 2019

Jose C. Font, Acting Director, Caribbean Environmental Protection Division, EPA Region 2.

Signed and issued this 14th day of May 2019

Catharine McManus, Deputy Director, Water Division, EPA Region 3.

Signed and issued this 14th day of May 2019

Jeaneanne M. Gettle, Director, Water Division, EPA Region 4.

Signed and issued this 14th day of May 2019

Joan M. Tanaka, Acting Director, Water Division, EPA Region 5.

Signed and issued this 14th day of May 2019

Charles W. Maguire, Director, Water Division, EPA Region 6.

Signed and issued this 14th day of May 2019

Jeffery Robichaud, Director, Water Division, EPA Region 7.

Signed and issued this 14th day of May 2019

Darcy O'Connor, Director, Water Division, EPA Region 8.

Signed and issued this 14th day of May 2019

T om6s Torres, Director, Water Division, EPA Region 9.

Signed and issued this 14th day of May 2019

Daniel D. Opalski, Director, Water Division, EPA Region 10.

CONTENTS

1 How to Obtain Coverage Under the Construction General Permit {CGP)

1 .1 Eligibility Conditions

1 .2 Types of Discharges Authorized

1.3 Prohibited Discharges

1 .4 Submitting your Notice of Intent (NOi)

1.5 Requirement to Post a Notice of Your Permit Coverage

2 Technology-Based Effluent Limitations

2.1 General Stormwater Control Design, Installation, and Maintenance Requirements

2.2 Erosion and Sediment Control Requirements

2.3 Pollution Prevention Requirements

2.4 Construction Dewatering Requirements

3 Water Quality-Based Effluent Limitations

3.1 General Effluent Limitation to Meet Applicable Water Quality Standards

3.2 Discharge Limitations for Sites Discharging to Sensitive Waters ....... :

4 Site Inspection Requirements

4.1 Person (s) Responsible for Inspecting Site

4.2 Frequency of Inspections

4.3 Increase in Inspection Frequency for Sites Discharging to Sensitive Waters

4.4 Reductions in Inspection Frequency

4.5 Areas that MUST Be Inspected

4.6 Requirements for Inspections

4.7 Inspection Report

4.8 Inspections By EPA

5 Corrective Actions

5.1 Conditions Triggering Corrective Action. ··································i············································· 24

5.2 Corrective Action Deadlines

5.3 Corrective Action Required by EPA ......................................................................................... 25 '

5.4 Corrective Action Report

6 Staff Training Requirements

7 Stormwater Pollution Prevention Plan {SWPPP)

7 .1 General Requirements

7.2 SWPPP Contents

7.3 On-Site Availability of Your SWPPP

7 .4 SWPPP Modifications

Pagei

8 How to Terminate Coverage ..................................................................•

8.1 Minimum Information Required in NOT

8.2 Conditions for Terminating CGP Coverage

8.3 How to Submit Your NOT

8.4 Deadline for Submitting the NOT

8.5 Effective Date of Termination of Coverage

9 Permit Conditions Applicable to Specific States, Indian Country Lands, or Territories .....•

Appendix A: Definitions and Acronyms ........................................................................................... A-1

Appendix B: Permit Areas Eligible for Coverage and EPA Regional Addresses .....................••.... B-1

Appendix C: Small Construction Waivers and Instructions ............................................................ C-1

Appendix D: Eligibility Procedures Relating to Threatened & Endangered Species Protection. D-1

Appendix E: Historic Property Screening Process ............................................................................ E-1

Appendix f: List of Tier 3, Tier 2, and Tier 2.5 Waters ......................................................................... F-1

Appendix G: Buffer Requirements ................................................................................................... G-1

Appendix H: 2-Year, 24-Hour Storm Frequencies ........................................................................... H-1

Appendix I: Standard Permit Conditions ........................................................................................... 1-1

Appendix J: Notice of Intent (NOi) form and lnstructions ............................................................... J-1

Appendix K: Notice of Termination (NOT) Form and Instructions .................................................. K-1

Appendix L: Suggested format for Request for Chemical Treatment ............................................ L-1

Page ii

1 HOW TO OBTAIN COVERAGE UNDER THE CONSTRUCTION GENERAL PERMIT (CGP)

To be covered under this permit, you must meet the eligibility conditions and follow the requirements for obtaining permit coverage in this Part.

1.1 ELIGIBILITY CONDITIONS

1.1.1 You are an "operator" of a construction site for which discharges will be covered under…