Compiled OR 140 digiESCPrevisedJune2021noSpecsUpdated10Jan2022sign.pdf

Erosion and Sediment Control Plan

ESCP

For:

Klamath County Boat Marina to Lakeshore Drive, OR DOT 140(1)

Klamath County, OR

Federal Highway Administration, Western Federal Lands Highway Division

Project Engineer:

General Contractor:

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

TAB 5: 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 Checklist

TAB 18: NPDES Notice of Termination (NOT)

Tab 1

CONTRACTOR:

Complete SWPPP narrative in accordance with contract 107.01A(b).

Revise SWPPP narrative as needed throughout construction.

Oregon: Erosion and Sediment Control Plan (ESCP)

For Construction Activities at:

Project Name: Klamath County Boat Marina to Lakeshore Drive, OR DOT 140(1)

Project Site Location: Approximately 5 miles northwest of Klamath Falls

City, County, State, Zip Code: Klamath Falls, Klamath, OR, 97601

ESCP Prepared for:

Organization Name: FHWA, Western Federal Lands Highway Division

Address: 610 East Fifth Street

Vancouver, WA 98661-3801

Telephone Number: 360-619-7700

ESCP Prepared by:

Name, Title: Melissa J. Hogan, Environmental Protection Specialist

Company/Organization: FHWA, Western Federal Lands Highway Division

Address: 610 E. 5th St.

Vancouver, WA 98661

Telephone Number: 360-619-7735

ESCP Preparation Date: January 10, 2022 Estimated Construction Start Date: May 15, 2022 Estimated

Construction Completion Date:August 31, 2024

Estimated Revegetation Start Date: October 1, 2022

Estimated Revegetation Completion Date: December 31, 2025

ESCP TABs (ESCP Inclusions)

TAB 1: ESCP Narrative

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

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

TAB 4: Delegation of Authority

TAB 5: Maps

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

TAB 7: Revegetation Plan (if applicable)

TAB 8: ESCP Amendment Log

TAB 9: Inspection Reports

TAB 10: Corrective Action Log

TAB 11: Water Quality Monitoring, Reporting Requirements, and Reports (if applicable)

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 SPCC

TAB 16: Threatened and Endangered Species and Historic Preservation (Section 106) Documentation

TAB 17: NPDES Quality Assurance Checklist

TAB 18: NPDES Notice of Termination (NOT)

TAB 1:

ESCP NARRATIVE

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Table of Contents

SECTION 1: RESPONSIBLE PARTIES/CONTACT INFORMATION

1.1 Operator(s):

1.2 Construction Site ESCP Contact(s):

1.3 ESCP Prepared by:

1.4 NPDES Stormwater Permit

1.5 ESCP Administrator

1.6 Permitting Authority for FHWA/WFLHD Projects

SECTION 2: PROJECT INFORMATION

2.1 Project Name and Location

2.2 Project Site Characteristics

SECTION 3: NATURE OF CONSTRUCTION ACTIVITY

3.1 General Description of Project and Scope of Work:

3.2 Sequence and Estimated Dates of Construction Activities

3.3 Potential Sources of Pollutants

SECTION 4: SITE MAPS

SECTION 5: DISCHARGES

5.1 Allowable Non-Stormwater Discharges

5.2 Receiving Waters:

5.3 Water Quality Monitoring Requirements

SECTION 6: COMPLIANCE WITH OTHER APPLICABLE REQUIREMENTS

6.1 Endangered Species Protection

6.2 Historic Preservation

6.3 Safe Drinking Water Act Underground Injection Control Requirements

SECTION 7: EROSION AND SEDIMENT CONTROLS

7.1 DELETED

7.2 Perimeter Controls

7.3 Sediment Track-Out

7.4 Stockpiled Soil or Other Erodible Materials

7.5 Minimize Dust

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7.6 Minimize Disturbance of Steep Slopes

7.7 Topsoil Conservation

7.8 Minimize Soil Compaction

7.9 Storm Drain Inlets and Culvert Inlets

7.10 Constructed Stormwater Conveyance Channels and Culvert Outlets

7.11 Sediment Basins

7.12 Chemical Treatment

7.13 Dewatering Practices

7.14 Erosion Control and Stabilization

7.15 Removal of BMPs

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 Equipment/Vehicle Washing

8.5 Material Handling and Waste Management

8.6 Designate Concrete Washout Areas

SECTION 9: INSPECTIONS

9.1 Inspection Frequency

SECTION 10: DELEGATIONS OF AUTHORITY

SECTION 11: STAFF TRAINING

SECTION 12: CERTIFICATION AND NOTIFICATION

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Section 1: Responsible Parties/Contact Information

1.1 Operator(s):

Organization Name: FHWA, Western Federal Lands Highway Division (WFLHD

Address: 610 East Fifth Street Vancouver, WA 98661-3801

Telephone Number: 360-619-7700

Contractor and PE

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

1.2 Construction Site ESCP Contact(s):

FHWA Contact Name:

Title:

Project Engineer

Address:

Telephone Number:

General Contractor, Company:

Erosion Control

Supervisor Name:

Address:

Telephone Number:

*Placeholder, to be filled if/after permit coverage is transferred

Organization Name

Contact Name:

Title: Project Engineer

Address:

Telephone Number:

1.3 ESCP Prepared by:

Organization/Company:

Name, Position: Melissa J. Hogan, Environmental Protection Specialist

Role/Responsibility ESCP Preparer

Telephone Number: 360-619-7735

Email: Melissa.j.hogan@dot.gov

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1.4 NPDES Stormwater Permit

The Applicable EPA/State NPDES Stormwater Permit is located in TAB 2. The Project NOI and

EPA/State Acknowledgement with NPDES Tracking Number is located in TAB 3.

1.5 ESCP Administrator

The General Contractor (section 1.2) is responsible for maintaining the project ESCP 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 ESCP of Record and prepare all documentation required by the project NPDES stormwater permit and ESCP.

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

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

All ESCP 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 FHWA/WFLHD Projects

Delivery Confirmation documentation of the NOI is located in TAB 3.

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

Oregon Department of Environmental Quality (ODEQ)

State Permitting Authority

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

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

Oregon DEQ authorizes FHWA/WFLHD projects under the programmatic 1200-CA permit, (expired in 12/31/2005, administratively extended) http://www.oregon.gov/DEQ/contact_us.shtml http://www.deq.state.or.us/wq/stormwater/construction.htm

[3]

Section 2: Project Information

2.1 Project Name and Location

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

Project Name: Klamath County Boat Marina to Lakeshore Drive, OR DOT 140(1)

Project Site Location: Approximately 5 miles northwest of Klamath Falls

City, County, State, Zip Code: Klamath Falls, Klamath, OR, 97601

Latitude: Longitude:

(Linear Transportation Project) Start: 42.317469°, -121.942411°; End: 42.259744°, -121.874686°

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

Pro

Township, Range, Section Information:

(Linear Transportation Project)

T37S R7E S36; T38S R7E S01; T38S R8E S06-S09; T38S R8E S15-S16

Is the project located in Indian country? No

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

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

2.2 Project Site Characteristics

The undeveloped site and features of the land that are incorporated into the final soil Erosion and

Sediment Control plan sheets (TAB 6) , as well as natural resources that should be protected are described below:

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

Wetlands and Waters of the U.S. include: Upper Klamath Lake and Wetlands A-G identified during the wetland delineation field surveys.

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Vegetation and trees include: Vegetation includes a mix of herbaceous plants, shrubs, and overhanging deciduous trees including Oregon white oak (Quercus garryana), black oak (Quercus kelloggii), and quaking aspen (Populus tremuloides). This road prism is mostly clear of vegetation, but a mix of native and non-native herbaceous species, including scentless false mayweed

(Tripleurospermum perforatum) and moth mullein (Verbascum thapsus), are encroaching from the unimproved right-of-way. Ponderosa pine (Pinus ponderosa) forest is immediately adjacent and upslope of the study area from MP 57 to 59.

South of MP 59, the habitat is a mix of agriculture, ponderosa pine forest, oak woodland, and residential or resort properties with cultivated vegetation.

Highly erodible soils include: Algoma silt loam, Dodes loam (2 to 15 percent slopes), Histosols (ponded), Lather muck, Lorella (very stony loam, 2 to 35 percent south slopes), and Tulana silt loam.

Also, see TAB 6

Stormwater currently drains from the site in the following manner:

Vegetated filter strips, dry swales, soil infiltration, and sheet flow from the roadway to adjacent ditches - some ditches feature cross-drainage culverts which have formed backflow-generated wetlands and are hydrologically connected to Upper Klamath Lake.

Also, see TAB 6

The location of discharge points or areas:

Roadside ditches, drainage culverts, wetlands, and Upper Klamath Lake.

Also see TAB 6

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

TABs 5 and 6.

Critical slopes and slope lengths include:

None listed in the Oregon SLIDO database.

Soil type(s) of identified as,1

Map unit symbol Map unit name Rating Acres in AOI 1 Algoma silt loam .37 10.2 18B Dodes loam, 2 to 15 percent slopes .37 0.1

46 Lather muck 30.7

50E Lorella very stony loam, 2 to 35 percent south

.15 33.1

1 NRCS Web Soil Survey.

http://websoilsurvey.nrcs.usda.gov/app/WebSoilSurvey.aspx

[5] slopes

81E Woodcock association, north

11.1

82E Woodcock association, south

116.9

83F Woodcock-Rock outcrop complex, 40 to 60 percent north slopes

96.9

W Water 52.7

Any past soil contamination at the site is identified as, None.

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

Also see TAB 6

Protected Natural Features:

See first box under section 2.2 - Project Site Characteristics.

Measures to protect these features:

Project will utilize erosion and sediment control BMPs to avoid discharging sediment- laden, construction stormwater runoff into the streams.

10-year Mean Annual Precipitation at the Project Site (inches):2 34.61

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

1.69 inches per day

The 10-year, 24-hour storm event:

2.25 inches per day

The 25-year, 24-hour storm event:

3.25 inches per day

2 NRCS Annual Climate Data

3 Precipitation frequency for Western States https://www.wcc.nrcs.usda.gov/climate/navigate_wets.html http://www.wrcc.dri.edu/Climate/precip_freq_maps.php

[7]

Section 3: Nature of Construction Activity

3.1 General Description of Project and Scope of Work:

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

This project will widen and re-align substandard curves along approximately two miles of Oregon Route 140. Work also includes armoring of the embankment along the lake with riprap, improving drainage, constructing guardrail, additional parking facilities along the lake, and an information kiosk for the Volcanic Legacy Scenic Byway. Fish habitat enhancement features will be added to the stone embankment fills extending into Upper Klamath Lake.

Concurrently, an open water and wetland reclamation/mitigation area will be created for losses incurred during project construction.

The type or function of the project is: Road Construction

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

To be completed by contractor

NOTE: All Contractor-selected sources and support sites are the sole responsibility of the

General Contractor. The ESCP and NPDES permitting for Contractor-selected sites and sources are separate from this documentation (SCR 107.01A(h)).

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

Size of Project Action Area:

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

Estimated Area Units

Total project area (within outermost project boundary): 15 Acres

Disturbed project area (area of digging within total project area): 5 Acres

Percent Impervious Project Area BEFORE Construction: 25 %

Runoff Coefficient BEFORE Construction: 0.8

Percent Impervious Project Area AFTER Construction: 43 %

Runoff Coefficient AFTER Construction: 0.8

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3.2 Sequence and Estimated Dates of Construction Activities

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

Contractor and PE

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

Phase:

Construction sequence description: Duration of sequence:

BMPs associated with this sequence:

Stabilization measures:

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Phase:

Construction sequence description: Duration of sequence:

BMPs associated with this sequence:

Stabilization measures:

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Phase:

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Construction sequence description: Duration of sequence:

BMPs associated with this sequence:

Stabilization measures:

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Phase:

Construction sequence description: Duration of sequence:

BMPs associated with this sequence:

Stabilization measures:

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Phase:

Construction sequence description: Duration of sequence:

BMPs associated with this sequence:

Stabilization measures:

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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.

S e le c te d A c ti v it y

X

Construction Activity

Potential Construction Site Pollutants

S e d im e n t

N u tr ie n ts

B a c te r ia p H

O il

G r e a se

T a sh

D e b is

P st ic id e s

H e a v y

M e ta ls

O th

P o ll u ta n ts

Clearing, excavating, and grading X X

Fill of roadway embankment, backfill at structures X X

Vehicle/equipment fueling and maintenance X X X

Vehicle/equipment use and storage X 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 X

Demolition and debris disposal X X X X X

Solid waste (trash and debris) X X

Hazardous waste or contaminated spills X 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

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

Material Storage Location x

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Section 4: Site Maps

Vicinity maps are located in TAB 5.

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

[12]

Section 5: Discharges

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

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

Industrial Activity Stormwater Discharge

Location

Multi-Sector General

Permit Number (if applicable)

1. N/A

5.1 Allowable Non-Stormwater Discharges

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.

Applicable to this

Project

(check all that apply)

Potential Non-Stormwater Discharges Control Measures

To be completed by contractor

Waters used to wash vehicles where detergents are not used

Water used to control dust Do not overwater.

Potable water including uncontaminated water line flushings

Construction dewatering (uncontaminated)

Ground water or spring water (uncontaminated) Monitor to ensure sediment laden water does not reach a water body.

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

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

Landscape irrigation Monitor to ensure sediment laden water does not reach a water body.

Discharges from emergency fire-fighting activities N/A

Fire hydrant flushings

Uncontaminated air conditioning or compressor condensate

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

TAB 6

5.2 Receiving Waters:

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

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

1. Upper Klamath Lake

Impaired Waters/TDMLs:

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

Is this surface water listed as

“impaired?”

What pollutant(s) is causing the impairment?

Has a TMDL been completed?

Pollutant(s) for which there is a TDML

1. Yes No Phosphorus Yes No Dissolved Oxygen, pH, and Chlorophyll -a

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

Upper Klamath Lake Drainage Total Maximum Daily Load (TMDL) and Water

Quality Management Plan (WQMP)

Tier 2, 2.5, or 3 Waters

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

Is this surface water designated as Tier 2, 2.5, or 3?

If yes, specify which Tier.

1. Yes No Choose an item.

If applicable, documentation of consultation with State or Federal TMDL authorities on consistency of ESCP conditions with the approved TMDL is found in TAB 11. The control measures required to ensure that discharge of pollutants from the site are consistent with the assumptions and requirements of the EPA-established or approved TMDL, including any specific waste-load allocations are included in that documentation.

5.3 Water Quality Monitoring Requirements

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

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

3. The date(s) analyses were performed

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

5. The analytical techniques or methods used; and

6. The results of such analyses.

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Section 6: Compliance with Other Applicable Requirements

6.1 Endangered Species Protection

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

A B C D E F

Criterion A. 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.

Criterion B. 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 of NPDES 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.

Criterion C 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.

Criterion D. 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

[16] affect listed species or critical habitat. You must include copies of the correspondence between yourself and the Services in your ESCP and NOI.

Criterion E. Consultation between a Federal Agency and the U.S. Fish and Wildlife

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

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

or

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

You must include copies of the correspondence between yourself and the Services in your ESCP and NOI.

Criterion F. 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

ESCP and NOI.

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

Dike

Berm

Catch Basin

Pond

Ditch, trench, swale, perimeter drain, etc.

Culvert

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

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Provide documentation for the basis of this determination. SHPO response letter dated January 2, 2020 declaring that “no historic properties affected for this undertaking” [above-ground historic resources only] and that the three resources of initial concern are considered not eligible for listing in the National Register of Historic Places.

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? Yes

Provide documentation for the basis of this determination. SHPO response letter dated January

31, 2020 declaring that “the project will likely have no effect on any significant archaeological objects or sites”.

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? Yes

Provide the nature of their response. See #2 and #3, above.

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:

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)

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

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

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

Click here to enter text.

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Section 7: Erosion and Sediment Controls

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

The objectives of this ESCP 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. Avoid disturbing natural channels and the vegetation along natural channels as much as possible.

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

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

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

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

7.1 DELETED

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:

Measure: Fiber rolls

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

Maintenance: Sediment will be removed from fiber roll perimeter controls before deposits reach

50% of the above ground height. It is the Contractor’s responsibility to upgrade erosion control measures as necessary if the sediment controls are ineffective and turbid water is observed discharging from the site. Fiber rolls will not be removed until vegetation is satisfactorily established.

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Measure: Floating Turbidity Curtain

Implementation: NOTE: THIS PROJECT REQUIRES THE APPLICATION OF TWO

FLOATING TURBIDITY CURTAINS AT EACH INSTANCE, AS NOTED ON THE PLANS.

Should be adequately configured for durability according to the wave action, tidal influence, flow, and wind conditions of the application. Ensure curtains extend the entire depth of the watercourse (in non-tidal situations). When in tidal situations, a minimum 1-foot gap should exist between the weighted lower end of the skirt and the bottom at mean low water. When sizing length, allow an additional 10-20 percent variance in the straight line measurements to allow for easier installation and the reduction of stress on joints caused by potentially heavy wave action. Do not drag the skirt as it is removed from the water. Excessive joints should be avoided and stability should be ensured by a minimum continuous span of 50 feet and a maximum span of 100 feet between joints (anchor or stake locations) is recommended. Floating upper and weighted lower ends of curtain should extend and be secured firmly up into the shoreline, especially if high water conditions are expected.

Maintenance: If sediment removal is necessary, particles should be allowed to settle for a minimum of 6-12 hours prior to their removal by equipment or prior to the removal of the curtain itself. Any sediment removed from the watercourse must be taken to an upland area and be properly stabilized.

Contractor and PE

Note: Add additional measures used during construction.

7.3 Sediment Track-Out

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

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

Measure: Stabilized Construction Entrance/Exit

Implementation: Wherever traffic will be leaving a construction site and traveling onto paved roads or other paved areas, within 1,000 feet of the site. Please also refer to project schedule, contract, and plan set (Erosion Control section).

Maintenance: Any sediment that is tracked onto pavement shall be removed by shoveling or sweeping. The sediment collected by sweeping shall be removed or stabilized on site. The pavement shall not be cleaned by washing down the street, except when sweeping is ineffective and there is a threat to public safety.

Contractor and PE

Note: Add additional measures used during construction.

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.

[20]

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

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

Measure: Turf Establishment and Mulch

Implementation: In places where exposed soil surfaces are not to be fine-graded for periods longer than 30 days. On steep slopes, a Bonded Fiber Matrix (BFM) or a Mechanically Bonded Fiber Matrix (MBFM) product should be used. Any mulch or tackifier product used shall be installed per manufacturer’s instructions. Application is made so that a minimum of 95 percent soil coverage is achieved. Most products require 24- 36 hours to cure before a rainfall and cannot be installed on wet or saturated soils. Please also refer to project schedule, contract, and plan set

(Erosion Control section).

Maintenance: Frequent functionality inspections until proper revegetation efforts are made.

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

7.5 Minimize Dust

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

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

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

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

7.6 Minimize Disturbance of Steep Slopes

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

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

Measure: Turf Establishment and Mulch

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Implementation: In places where exposed soil surfaces are not to be fine-graded for periods longer than 30 days. On steep slopes, a Bonded Fiber Matrix (BFM) or a Mechanically Bonded

Fiber Matrix (MBFM) product should be used. Any mulch or tackifier product used shall be installed per manufacturer’s instructions. Application is made so that a minimum of 95 percent soil coverage is achieved. Most products require 24- 36 hours to cure before a rainfall and cannot be installed on wet or saturated soils. Please also refer to project schedule, contract, and plan set (Erosion Control section).

Maintenance: Frequent functionality inspections until proper revegetation efforts are made.

Contractor and PE

Note: Add additional measures used during construction.

7.7 Topsoil Conservation

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

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

☐ Conservation of topsoil is Infeasible:

Reason: Click here to enter text.

Alternate method: Click here to enter text.

☐ Conservation of topsoil is Feasible:

Measure: Click here to enter text.

Implementation: Click here to enter text.

Maintenance: Click here to enter text.

7.8 Minimize Soil Compaction

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

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

If applicable:

Measure: Click here to enter text.

Implementation: Click here to enter text.

Maintenance: Click here to enter text.

[22]

Note: Add additional measures used during construction.

7.9 Storm Drain Inlets and Culvert Inlets

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

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

The following BMPs are applicable to:

☐ Storm Drain Inlets

☒ Culvert Inlets

Measure: Fiber rolls

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

Maintenance: Sediment will be removed from fiber roll perimeter controls before deposits reach

50% of the above ground height. It is the Contractor’s responsibility to upgrade erosion control measures as necessary if the sediment controls are ineffective and turbid water is observed discharging from the site. Fiber rolls will not be removed until vegetation is satisfactorily established.

Measure: Drainage inlet protection structures Implementation: Protect inlet structures, before and during active construction. Means must prevent discharge of turbid water downstream. The Contractor shall remove inlet protection at the end of the project without releasing captured sediment into the storm system to not allow sediment plugging. Please also refer to project schedule, contract, and plan set (Erosion Control section).

Maintenance: Clean or remove and replace the protection measures as sediment accumulates, the filter becomes clogged, and/or performance is compromised. Where there is evidence of sediment accumulation adjacent to the inlet protection measure, 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.

Measure: Riprap at Culvert Outlet Protection Implementation: Outlet protection should be finalized before the drainage system becomes effective. Filter cloth should be placed between riprap and the underlying soil to prevent soil movement into and through the riprap. Please also refer to project schedule, contract, and plan set (Erosion Control section).

Maintenance: Loose rock should be replaced. Inspections should occur monthly and after each major rainfall event.

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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.

Measure: Riprap at Culvert Outlet Protection Implementation: Outlet protection should be finalized before the drainage system becomes effective. Filter cloth should be placed between riprap and the underlying soil to prevent soil movement into and through the riprap. Please also refer to project schedule, contract, and plan set (Erosion Control section).

Maintenance: Loose rock should be replaced. Inspections should occur monthly and after each major rainfall event.

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

7.11 Sediment Basins

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

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

Measure: Vegetated Filter Strip (VFS)

Implementation: A VFS is an edge-of-the-site BMP and should be used in conjunction with other

BMPs that are designed to reduce soil loss. All trees, brush, stumps, rocks, and similar materials that can interfere with installing the filter strip should be removed. Construct VFS according to the engineered size and shape and roughen the soil surface prior to vegetating. Runoff must pass over the vegetation in a uniform sheet flow – do not allow runoff to concentrate. Grading must be conducted at the approved slope design of no more than 5%. Vegetation and Water Quality

Mix (soil) is site specific - seeds should be of high quality and consist of approved species ratios.

Please also refer to project schedule, contract, and plan set (Erosion Control section).

Maintenance: Frequent inspections are necessary the first few years until vegetation is well established. Periodic regrading and sediment removal may be necessary. Plant density should be encouraged by fertilizing and weeding periodically. Reseeding may also be necessary. Minimize

[24] the development of erosion channels within the filter. Even small channels may allow runoff to bypass the filter.

Measure: Dry Swale / Vegetated Swale / Bioswale

Implementation: In areas of 10 acres or less with a minimum width of 20 feet and never less than

100 feet long. All trees, brush, stumps, rocks, and similar materials that can interfere with installing the swale should be removed. Construct swale according to the engineered size and shape and roughen the soil surface prior to vegetating. Runoff must pass over the vegetation in a uniform sheet flow – do not allow runoff to concentrate. Grading must be conducted at the approved longitudinal slope design of no more than 6%. Vegetation and Water Quality Mix

(soil) is site specific - seeds should be of high quality and consist of approved species ratios.

Please also refer to project schedule, contract, and plan set (Erosion Control section).

Maintenance: Vegetation in the swale should be trimmed every year or two to prevent woody species from taking over. Clipping from plants should be disposed of properly as they may have absorbed hazardous toxins. Regrading may be necessary to reshape the shallow-broad shape as sediments collect and form pools. As with plant waste, sediments should be removed and disposed of properly.

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.

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

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. Complete temporary soil stabilization measures to disturbed sites or stockpiles within 14 days of last disturbance. Provide for temporary stabilization of all exposed soil prior to winter construction shut down.

Specify whether stabilization measure is temporary or permanent.

☒ Temporary Measures:

Measure: Revegetation with contractor-approved seed mix

Implementation: See also, Turf Establishment and Mulch. In places where exposed soil surfaces are not to be fine-graded for periods longer than 30 days. Please also refer to project

[25] schedule, contract, and plan set (Erosion Control section).

Maintenance: Frequent inspections until proper vegetative establishment has been made.

Measure: Tackifier Implementation: See also, Turf Establishment and Mulch. During active construction and within 14 days of last disturbance. Please also refer to project schedule, contract, and plan set (Erosion Control section).

Maintenance: Maintain thickness of cover. Any areas showing signs of rilling or other erosive circumstances will be retreated and/or protected by a blanket or net.

☒ Permanent Measures:

Measure: Revegetation with contractor-approved seed mix

Implementation: See also, Turf Establishment and Mulch. In disturbed areas where permanent, long-lived vegetative cover is needed to stabilize the soil. Please also refer to project schedule, contract, and plan set (Erosion Control section).

Maintenance: Frequent inspections until proper vegetative establishment has been made.

7.15 Removal of BMPs

Remove erosion and sediment control BMPs that are no longer needed and leave in good working order those BMPs that will remain at the construction site after close-out.

BMPs are no longer needed when the site that the BMP is protecting has reached final stabilization as defined in the applicable NPDES Stormwater Permit.

Final stabilization means:

• All ground disturbing activities at the site have been completed, AND

• Vegetation has been established that provides a uniform perennial vegetative cover with a density of 70% of the natural vegetative cover prior to construction.

• In arid (0-10” annual precipitation) or semiarid (10-20” annual precipitation) areas, final stabilization is considered to be achieved when the area is seeded or planted and vegetation is expected to provide 70% cover within 3 years; AND, erosion controls are in place that provide soil protection for at least 3 years without active maintenance.

Document arid/semi-arid conditions in ESCP

• Effective non-vegetative stabilization is in-place such as rip rap, gabions, geotextiles, rock, aggregate etc.

[26]

7.16 Post Construction Measures

Responsibility for NPDES permit compliance after construction close-out will be the responsibility of:

☐ FHWA/WFLHD

☐ Land Management/Owner Agency Specify Agency: Choose an item.

☒ County/State DOT

Applicable permit termination/transfer information is located in TAB 18.

[27]

Section 8: Operational Controls/Good Housekeeping Measures

8.1 Hazardous Spill Plan

Spills and potential stormwater contamination will be controlled to reduce the chance of spills, stop the source of spills, contain and clean up spills, and dispose of materials contaminated by spills.

Spill prevention and response actions are outlined in the Hazardous Spill Plan or Spill

Prevention, Control, and Countermeasure Plan (SPCC) whichever is applicable, TAB 15.

Construction sites may be subject to 40 CFR Part 112 regulations that require the preparation and implementation of a Spill Prevention, Control and Countermeasure Plan if the facility is a non-transportation-related facility that: has a total storage capacity greater than 1,320 gallons or a completely buried storage capacity greater than 42,000 gallons and could reasonably be expected to discharge oil in quantities that may be harmful to navigable waters of the United States and adjoining shorelines. See EPA website: http://www.epa.gov/OEM/content/spcc/index.htm

Implementation: Prior to construction activities and throughout construction.

8.2 Spills/Releases in Excess of Reportable Quantities

This permit does not provide authorization to discharge hazardous substances or oil resulting from an on-site spill. This permit does not provide relief from the federal reporting requirements of 40 CFR Part 110, 40 CFR Part 117 and 40 CFR Part 302 relating to spills or other releases of oils or hazardous substances.

For a release containing a hazardous substance or oil in an amount equal to or in excess of a reportable quantity established under either 40 CFR Part 110, 40 CFR Part 117 or 40 CFR Part 302, occurs during a 24-hour period:

• Notice will be provided to the National Response Center (800–424–8802) in accordance with the requirements of 40 CFR Part 110, 40 CFR Part 117 and 40 CFR Part 302 as soon as site staff have knowledge of the discharge; and written notice will be provided within 7 calendar days of knowledge of the release, provide a description of the release, the circumstances leading to the release, and the date of a release.

• Measures to prevent the reoccurrence of such releases will be implemented.

8.3 Equipment/Vehicle Fueling and Maintenance Practices

On-site fueling areas will have a spill kit present, visible, and maintained.