Attachment_B_DRAFT_UCC_SWPPP_031015.pdf

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Contents

SECTION 1: CONTACT INFORMATION/RESPONSIBLE PARTIES

1.1 Operator(s) / Subcontractor(s)

1.2 Stormwater Team

SECTION 2: SITE EVALUATION, ASSESSMENT, AND PLANNING

2.1 Project/Site Information

2.2 Discharge Information

2.3 Nature of the Construction Activity

2.4 Sequence and Estimated Dates of Construction Activities

2.5 Allowable Non-Stormwater Discharges

2.6 Site Maps

SECTION 3: DOCUMENTATION OF COMPLIANCE WITH OTHER FEDERAL REQUIREMENTS

3.1 Endangered Species Protection

3.2 Historic Preservation

3.3 Safe Drinking Water Act Underground Injection Control Requirements

SECTION 4: EROSION AND SEDIMENT CONTROLS

4.1 Natural Buffers or Equivalent Sediment Controls

4.2 Perimeter Controls

4.3 Sediment Track-Out

4.4 Stockpiled Sediment or Soil

4.5 Minimize Dust

4.6 Minimize the Disturbance of Steep Slopes

4.7 Topsoil

4.8 Soil Compaction

4.9 Storm Drain Inlets

4.10 Constructed Stormwater Conveyance Channels

4.11 Sediment Basins

4.12 Chemical Treatment

4.13 Dewatering Practices

4.14 Other Stormwater Controls

4.15 Site Stabilization

SECTION 5: POLLUTION PREVENTION STANDARDS

5.1 Potential Sources of Pollution

5.2 Spill Prevention and Response

5.3 Fueling and Maintenance of Equipment or Vehicles

5.4 Washing of Equipment and Vehicles

5.5 Storage, Handling, and Disposal of Construction Products, Materials, and Wastes

5.6 Washing of Applicators and Containers used for Paint, Concrete or Other Materials

5.7 Fertilizers

5.8 Other Pollution Prevention Practices

SECTION 6: INSPECTION AND CORRECTIVE ACTION

6.1 Inspection Personnel and Procedures

6.2 Corrective Action

6.3 Delegation of Authority

SECTION 7: TRAINING

SECTION 8: CERTIFICATION AND NOTIFICATION

SWPPP APPENDICES

EPA SWPPP Template, Version 1.1 1

SECTION 1: CONTACT INFORMATION/RESPONSIBLE PARTIES

1.1 Operator(s) / Subcontractor(s)

Contractor: To be determined.

Subcontractor(s): To be determined.

Emergency 24-Hour Contact: (Contractor) To be determined.

Instructions (see definition of “operator” at CGP Part 1.1.a):

― Identify the operator(s) who will be engaged in construction activities at the site.

Indicate respective responsibilities, where appropriate. Also include the 24-hour emergency contact.

― List subcontractors expected to work on-site. Notify subcontractors of stormwater requirements applicable to their work.

― Consider using Subcontractor Agreements such as the type included as a sample in Appendix G of the Template.

EPA SWPPP Template, Version 1.1 2

1.2 Stormwater Team

Owner

Contracting Officer United States Forest Service Palouse Ranger District Nez Perce – Clearwater National Forest

(208) 875-1311 ecrook@fs.fed.us

SWPPP Preparation

TerraGraphics Environmental Engineering Ben Davis, E.I.T.

Project Engineer

(208) 882-7858 Ben.Davis@terragraphics.com

Instructions (see CGP Part 7.2.1):

― Identify the staff members (by name or position) that comprise the project’s stormwater team as well as their individual responsibilities. At a minimum the stormwater team is comprised of individuals who are responsible for overseeing the development of the SWPPP, any later modifications to it, and for compliance with the requirements in this permit (i.e., installing and maintaining stormwater controls, conducting site inspections, and taking corrective actions where required).

― Each member of the stormwater team must have ready access to either an electronic or paper copy of applicable portions of the 2012 CGP and your SWPPP.

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EPA SWPPP Template, Version 1.1 4

2.2 Discharge Information

Does your project/site discharge stormwater into a Municipal Separate Storm Sewer System (MS4)? Yes No

Are there any surface waters that are located within 50 feet of your construction disturbances?

Yes No

Note: Although there are surface waters located within 50 feet of construction disturbances, all construction for this project will occur during the dry season when there is no flowing water in the stream channels and floodplain areas are dry; therefore, surface water during construction will be minimal to non-existent.

Instructions (see “Discharge Information” section of Appendix J – NOI form):

― In this section, include information relating to your site’s discharge. This information corresponds to the “Discharge Information” section of the NOI form. Because you may be using EPA’s mapping tool to answer some of these questions, and the tool is accessed in the eNOI system, you may find it necessary to leave some questions unanswered until you have completed that portion of the NOI.

― For Table 1, list the name of the first surface water that receives discharges from your site. If your site has discharges to multiple surface waters, indicate the names of all such waters.

― For Table 2, if any of the surface waters you listed out in Table 1 are listed as impaired by the applicable State or Tribe, provide specified information about pollutants causing the impairment and whether or not a Total Maximum Daily Load (TMDL) has been completed for the surface water. For more information on TMDLs and impaired waters, including a list of TMDL contacts and links by state, visit www.epa.gov/npdes/stormwater/tmdl.

― For Table 3, indicate whether any of the surface waters you listed out in Table 1 are designated as Tier 2, 2.5, or 3 waters by your State or Tribe. See Appendix F for more information.

EPA SWPPP Template, Version 1.1 5

Table 1 – Names of Receiving Waters Name(s) of the first surface water that receives stormwater directly from your site and/or from the MS4 (note: multiple rows provided where your site has more than one point of discharge that flows to different surface waters)

1. West Fork Corral Creek

Table 2 – Impaired Waters / TMDLs

Is this surface water listed as “impaired”?

If you answered yes, then answer the following:

What pollutant(s) are causing the impairment?

Has a TMDL been completed?

Title of the TMDL document Pollutant(s) for which there is a TMDL

1. YES NO Temperature YES NO Potlatch River Subbasin Assessment and TMDLs

Temperature

Describe the method(s) you used to determine whether or not your project/site discharges to an impaired water:

The Corral Creek upper basin tributaries such as West Fork Corral Creek are listed as impaired by the Idaho Department of Environmental Quality (IDEQ), and were identified as impaired on the IDEQ Water Quality Mapping Tool (http://mapcase.deq.idaho.gov/wq2010/). Specifically, Corral Creek is impaired by temperature. The TMDL document is entitiled “Potlatch River Subbasin Assessment and TMDLs”. The TMDL document can be found at:

http://www.epa.gov/waters/tmdldocs/potlatch_river_entire.pdf

Table 3 – Tier 2, 2.5, or 3 Waters

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

(see Appendix F)

If you answered yes, specify which Tier (2, 2.5, or 3) the surface water is designated as?

1. YES NO

EPA SWPPP Template, Version 1.1 5

2.3 Nature of the Construction Activity

General Description of Project

This project, referred to as the Upper Corral Creek Meadow Restoration Project, is located in Latah County, Idaho in Sections 35 and 36 of Township 41 North, Range 2 West and Sections 1 and 2 of Township 40 North, Range 2 West. The project site is located in the Potlatch River basin approximately 2 miles north-northeast of Deary, Idaho and includes two distinct locations: Vassar Meadow and Five-Acre Meadow. Vassar Meadow and Five-Acre Meadow are located directly north and south of Vassar Meadow Road (3347), respectively, in the headwaters of Corral Creek.

Through both Vassar Meadow and Five-Acre Meadow, as a result of past logging operations, the stream has been diverted into borrow ditches that run along constructed railroad berms, negatively impacting the existing floodplain and riparian environment. The purpose of this project is to restore meadow hydrology to a state that supports healthy native meadow and riparian conditions, including restoring the stream to its historic channel. The project is designed to slow water and enhance groundwater recharge, reduce the introduction of sediment into Corral Creek from excessive streambank and bed erosion, and promote natural native vegetation and riparian and wetland areas.

In general, the project consists of: development and decommissioning of access routes;

construction of a livestock ramp, trail, and crossings; installation of a culvert crossing; removal of railroad berms; excavation of persuasion channels; earthwork operations for construction of ditch plugs and fill areas; sod harvest, reuse, and storage; installation of fence; construction of log jams; debris removal; and site controls.

Size of Construction Project What is the size of the property (in acres), the total area expected to be disturbed by the construction activities (in acres), and the maximum area expected to be disturbed at any one time?

Property Size = Approximately 80 acres of meadow Total Construction Area = Approximately = 11 acres Maximum Area to Be Disturbed at One Time = Approximately 7.6 acres

Construction Support Activities

Staging of materials will be minimal for this project because rock and soil brought onto the site can be dumped immediately at the point of use. This strategy reduces multiple handling and excess trucking. Several staging areas for materials only are designated for use in the event that materials must be stored for short durations on site. Areas designated for contractor facilities are

Instructions (see CGP Parts 1.3.c and 7.2.2):

― Provide a general description of the nature of the construction activities at your project.

― Describe the size of the property (in acres) and the total area expected to be disturbed by the construction activities (in acres), construction support activities covered by this permit (see Part 1.3.c of the permit), and the maximum area expected to be disturbed at any one time.

EPA SWPPP Template, Version 1.1 6 two established sites that are separated from the creek and meadow systems.

2.4 Sequence and Estimated Dates of Construction Activities

Description of the Work

Construction of the Upper Corral Creek Restoration Project involves: development and decommissioning of access routes; construction of a livestock ramp, trail, and crossings; installation of a culvert crossing;

removal of railroad berms; excavation of persuasion channels; earthwork operations for construction of ditch plugs and fill areas; sod harvest, reuse, and storage; installation of fence; construction of log jams;

and debris removal.

Insert estimated start and end dates of construction disturbances associated with this phase:

The project dates are June 11, 2015 to September 19, 2015. The selected contractor can choose which area (Vassar Meadow or Five-Acre Meadow) they will complete first. All Work in that area must be completed prior to moving on to the other meadow. The exact start and end dates of this phase are therefore unknown and contractor dependent.

For each stormwater control, insert estimated date(s) of installation of each stormwater control:

The primary stormwater control for this project is that it will be constructed during the dry season (no flowing water in channels and dry meadow areas). The timing for stormwater feature installation will depend on forecasted weather and rain events. The US Forest Service will

Instructions (see CGP Part 7.2.5):

― Describe the intended construction sequence and timing of major activities.

― For each phase of construction, include the following information:

Installation of stormwater controls, and when they will be made operational;

Commencement and duration of earth-disturbing activities, including clearing and grubbing, mass grading, site preparation (i.e., excavating, cutting and filling), final grading, and creation of soil and vegetation stockpiles requiring stabilization;

Cessation, temporarily or permanently, of construction activities on the site, or in designated portions of the site;

Final or temporary stabilization of areas of exposed soil. The dates for stabilization must reflect the applicable deadlines to which you are subject to in Part 2.2.1; and

Removal of temporary stormwater conveyances/channels and other stormwater control measures, removal of construction equipment and vehicles, and cessation of any pollutant-generating activities.

― The construction sequence must reflect the following requirements:

Part 2.1.1.1 (area of disturbance);

Part 2.1.1.3.a (installation of stormwater controls); and Parts 2.2.1.1, 2.2.1.2, 2.2.1.3 (stabilization deadlines).

― Also, see EPA’s Construction Sequencing BMP Fact Sheet at http://www.epa.gov/npdes/stormwater/menuofbmps/construction/cons_seq)

EPA SWPPP Template, Version 1.1 7 monitor the weather for precipitation events predicted to produce greater than 0.25 inches, which will indicate the need for contractor implementation of sediment control BMPs at the site.

BMP use and placement will depend on what areas are vulnerable to stormwater impacts at the time BMPs are needed. Straw wattles and/or weed-free straw bales will be used as needed based on the weather forecast, location of construction activities at that time, and at the US Forest Service’s request.

For areas of the site required to be stabilized, insert estimated date(s) of application of stabilization measures:

The timing for stabilization will depend on the selected contractor’s construction sequencing.

Revegetation activities will be required and implemented upon completion of persuasion channel, fill areas, ditch plugs, and log jams. All other disturbed areas will be reclaimed to contain microtopography overlain with woody material and sod clumps. Reclamation will occur after the main construction activities have been completed at the project site.

Insert estimated date(s) when stormwater controls will be removed:

Temporary stormwater controls will be fiber rolls and/or weed-free straw bales and biodegradable. Permanent stormwater controls will consist of vegetation. Temporary stormwater controls will be removed when the site is stabilized or when permanent controls are in place. Permanent controls will remain on-site in perpetuity.

2.5 Allowable Non-Stormwater Discharges

List of Allowable Non-Stormwater Discharges Present at the Site

Instructions (see CGP Parts 1.3.d and 7.2.8):

― Identify all allowable sources of non-stormwater discharges. The allowable non-stormwater discharges identified in Part 1.3.d of the 2012 CGP include:

Discharges from emergency fire-fighting activities;

Fire hydrant flushings;

Landscape irrigation;

Waters used to wash vehicles and equipment, provided that there is no discharge of soaps, solvents, or detergents used for such purposes;

Water used to control dust;

Potable water including uncontaminated water line flushings;

Routine external building wash down that does not use detergents;

Pavement wash waters provided spills or leaks of toxic or hazardous materials have not occurred (unless all spilled material has been removed) and detergents are not used. You are prohibited from directing pavement was waters directly into any surface water, storm drain inlet, or stormwater conveyance, unless the conveyance is connected to a sediment basin, sediment trap, or similarly effective control;

Uncontaminated air conditioning or compressor condensate;

Uncontaminated, non-turbid discharges of ground water or spring water;

Foundation or footing drains where flows are not contaminated with process materials such as solvents or contaminated ground water; and Construction dewatering water that has been treated by an appropriate control.

EPA SWPPP Template, Version 1.1 8

Type of Allowable Non-Stormwater Discharge Likely to be Present at

Your Site?

Discharges from emergency fire-fighting activities YES NO Fire hydrant flushings YES NO Landscape irrigation YES NO Waters used to wash vehicles and equipment YES NO Water used to control dust YES NO Potable water including uncontaminated water line flushings YES NO Routine external building wash down YES NO Pavement wash waters YES NO Uncontaminated air conditioning or compressor condensate YES NO Uncontaminated, non-turbid discharges of ground water or spring water YES NO Foundation or footing drains YES NO Construction dewatering water YES NO

(Note: You are reminded of the requirement to identify the likely locations of these allowable non-stormwater discharges on your site map. See Section 2.6, below, of the SWPPP Template.)

EPA SWPPP Template, Version 1.1 9

2.6 Site Maps

Instructions (see CGP Part 7.2.6):

― Attach site maps in Appendix A of the Template. For most projects, a series of site maps is necessary and recommended. The first should show the undeveloped site and its current features. An additional map or maps should be created to show the developed site or, for more complicated sites, show the major phases of development.

These maps must include the following features:

― Boundaries of the property and of the locations where construction will occur, including:

Locations where earth-disturbing activities will occur, noting any phasing of construction activities;

Approximate slopes before and after major grading activities. Note areas of steep slopes, as defined in Appendix A;

Locations where sediment, soil, or other construction materials will be stockpiled;

Locations of any crossings of surface waters;

Designated points on the site where vehicles will exit onto paved roads;

Locations of structures and other impervious surfaces upon completion of construction; and Locations of construction support activity areas covered by this permit.

― Locations of all surface waters, including wetlands, that exists on or near your site.

Indicate which waterbodies are listed as impaired, and which are identified by your state, tribe, or EPA as Tier 2, Tier 2.5, or Tier 3 waters.

― The boundary lines of any natural buffer areas. See CGP Part 2.1.2.1.a.

― Areas of federally-listed critical habitat for endangered or threatened species.

― Topography of the site, existing vegetative cover (e.g., forest, pasture, pavement, structures), and drainage pattern(s) of stormwater and allowable non-stormwater flow onto, over, and from the site property before and after major grading activities.

― Stormwater and allowable non-stormwater discharge locations, including:

Locations of any storm drain inlets on the site and in the immediate vicinity of the site; and Locations where stormwater or allowable non-stormwater will be discharged to surface waters (including wetlands).

― Locations of all potential pollutant-generating activities.

― Locations of stormwater control measures.

― Locations where polymers, flocculants, or other treatment chemicals will be used and stored.

EPA SWPPP Template, Version 1.1 10

SECTION 3: DOCUMENTATION OF COMPLIANCE WITH OTHER FEDERAL REQUIREMENTS

3.1 Endangered Species Protection

Eligibility Criterion Under which criterion listed in Appendix D are you eligible for coverage under this permit?

A B C D E

For reference purposes, the eligibility criteria listed in Appendix D are as follows:

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 SWPPP and your NOI.

Supporting Documentation Provide documentation for the applicable eligibility criterion you select in Appendix C, as follows:

For criterion D, E, or F, attach copies of any letters or other communication between you and the U.S. Fish & Wildlife Service or National Marine Fisheries Service concluding consultation or coordination activities.

See Appendix C for Letter of Concurrence from National Marine Fisheries Service to US Forest Service for the Upper Corral Creek Meadow Restoration Project.

Instructions (see CGP Parts 1.1.e, 7.2.14.1, Appendix D, and the “Endangered Species Protection” section of the Appendix J – NOI form):

Follow the process in Appendix D of the permit for determining which eligibility criterion (A-E) you have met with respect to the protection of endangered species. You will ― Include documentation supporting your determination of eligibility.

― Additional information on Endangered Species Act (ESA) provisions for EPA’s

Construction General Permit is at www.epa.gov/npdes/stormwater/esa

EPA SWPPP Template, Version 1.1 11

3.2 Historic Preservation

Appendix E, Step 1 Do you plan on installing any of the following stormwater controls at your site? Check all that apply below, and proceed to Appendix E, Step 2.

Dike Berm Catch Basin Pond Stormwater Conveyance Channel (e.g., ditch, trench, perimeter drain, swale, etc.)

Culvert Other type of ground-disturbing stormwater control:

None of the above items will be installed at the site for stormwater control purposes.

3.3 Safe Drinking Water Act Underground Injection Control Requirements

Do you plan to install any of the following controls? Check all that apply below.

Infiltration trenches (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)

Commercially manufactured pre-cast or pre-built proprietary subsurface detention

Instructions (see CGP Part 1.1.f, 7.2.14.2, Appendix E, and the “Historic Preservation” section of the Appendix J – NOI form):

Follow the screening process in Appendix E of the permit for determining whether your installation of subsurface earth-disturbing stormwater controls will have an effect on historic properties.

― Include documentation supporting your determination of eligibility.

― To contact your applicable state or tribal historic preservation office, information is available at www.achp.gov/programs/html.

Instructions (see CGP Part 7.2.14.3):

― If you will use any of the identified controls in this section, include documentation of contact between you and the applicable state agency or EPA Regional Office responsible for implementing the requirements for underground injection wells in the Safe Drinking Water Act and EPA’s implementing regulations at 40 CFR Parts 144-147.

― For state UIC program contacts, refer to the following EPA website:

http://water.epa.gov/type/groundwater/uic/whereyoulive.cfm.

EPA SWPPP Template, Version 1.1 12 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)

None of the above items will be installed or used at the site.

EPA SWPPP Template, Version 1.1 13

SECTION 4: EROSION AND SEDIMENT CONTROLS

4.1 Natural Buffers or Equivalent Sediment Controls

Buffer Compliance Alternatives Are there any surface waters within 50 feet of your project’s earth disturbances? YES NO

Check the compliance alternative that you have chosen:

I qualify for one of the exceptions in Part 2.1.2.1.e. (If you have checked this box, provide information on the applicable buffer exception that applies, below.)

Buffer Exceptions

Which of the following exceptions to the buffer requirements applies to your site?

There is no discharge of stormwater to the surface water that is located 50 feet from my construction disturbances.

This project is scheduled during the dry season. There will be no flowing water in the stream channels and surrounding floodplain will be dry during construction. It is infeasible to maintain an undisturbed natural buffer of any size as much of the construction activities will be completed in the stream channels. Disturbed areas adjacent to stream channels will be minimized. Forecasted weather events will prompt installation of stormwater BMPs adjacent to a particular construction activity, which will consist of fiber rolls and weed-free

General Instructions (See CGP Parts 2.1 and 7.2.10):

― Describe the erosion and sediment controls that will be installed and maintained at your site.

― For more information or ideas on BMPs, see EPA’s National Menu of BMPs http://www.epa.gov/npdes/stormwater/menuofbmps

Instructions (see CGP Parts 2.1.2.1 and 7.2.9, and Appendix G):

This section only applies to you if a surface water is located within 50 feet your construction activities. If this is the case, consult CGP Part 2.1.2.1 and Appendix G for information on how to comply with the buffer requirements.

― Describe the compliance alternative (CGP Part 2.1.2.1.a.i, ii, or iii) that was chosen to meet the buffer requirements, and include any required documentation supporting the alternative selected. The compliance alternative selected must be maintained throughout the duration of permit coverage. However, if you select a different compliance alternative during your period of permit coverage, you must modify your SWPPP to reflect this change.

― If you qualify for one of the exceptions in CGP Part 2.1.2.1.e, include documentation related to your qualification for such exceptions.

EPA SWPPP Template, Version 1.1 14 straw bales. Vegetation will be installed throughout the project area for permanent sediment control.

No sediment load calculations were computed for this project since it will be constructed during the dry season and there will be no flowing water on site to mobilize sediments.

4.2 Perimeter Controls

General

It is impracticable to use perimeter controls for the Upper Corral Creek Meadow Restoration Project. The work will be concentrated to select, small areas of the meadow and stream channel. There is not a single large area that would require a perimeter-type stormwater control. Stormwater BMPs will be implemented at the staging areas and at the disturbed areas within the meadow before and during possible rain events. All disturbed areas will be re-claimed with stabilization techniques as described in Section 4.15 of this SWPPP. Reclamation of the disturbed areas and re-vegetation will provide adequate stormwater control at the project site after construction is complete.

Instructions (see CGP Parts 2.1.2.2 and 7.2.10):

― Describe sediment controls that will be used (e.g., silt fences, filter berms, temporary diversion dikes, or fiber rolls) to meet the Part 2.1.2.2 requirement to “install sediment controls along those perimeter areas of your site that will receive stormwater from earth-disturbing activities.”

― For linear projects, where you have determined that the use of perimeter controls in portions of the site is impracticable, document why you believe this is to be the case.

― Also see, EPA’s Silt Fence BMP Fact Sheet at www.epa.gov/npdes/stormwater/menuofbmps/construction/silt_fences or Fiber Rolls BMP Fact Sheet at www.epa.gov/npdes/stormwater/menuofbmps/construction/fiber_rolls

EPA SWPPP Template, Version 1.1 15

4.3 Sediment Track-Out

There are no off-site streets, paved areas, or sidewalks on or near the project site. The project site is located on a rural forest road. Sediment track out controls not required because the nearest paved road is approximately 5 miles from the site.

Specific Track-Out Controls

Track-Out Control # 1 – Heavy Equipment Mobilization/Demobilization

Equipment will remain on the project site after mobilization, and will be washed during demobilization, prior to leaving the site. Vehicles entering or exiting the site are required to be free of weed seeds, and will usually be washed for this purpose.

Installation

A vehicle washing area will be designated at the exit of each site.

Maintenance Requirements

There will be no sediment track-out from the site and maintenance for sediment track-out will not be required.

Instructions (see CGP Parts 2.1.2.3 and 7.2.10):

― Describe stormwater controls that will be used to “minimize the track-out of sediment onto off-site streets, other paved areas, and sidewalks from vehicles exiting your construction site.”

― Describe location(s) of vehicle exit(s), procedures to remove accumulated sediment off-site (e.g., vehicle tracking), and stabilization practices (e.g., stone pads or wash racks or both) to minimize off-site vehicle tracking of sediment. Also include the design, installation, and maintenance specifications for each control.

― Also, see EPA’s Construction Entrances BMP Fact Sheet at www.epa.gov/npdes/stormwater/menuofbmps/construction/cons_entrance

EPA SWPPP Template, Version 1.1 16

4.4 Stockpiled Sediment or Soil

Very little staging will be required for this project because incoming materials can be dumped at the point of need. Small staging areas may be used occasionally to stockpile soils, rock, and other construction materials throughout the project duration. Stormwater BMPs will be installed down-gradient of staging areas if weather forecasts indicate rainfall, and if there are soils present in the staging areas that are capable of mobilization due to rainfall.

Specific Stockpile Controls

Stockpile Control # 1 – Fiber Rolls and Weed-Free Straw Bales

12-inch diameter fiber rolls consisting of straw, coconut, flax, or other similar materials bound into 100% biodegradable encasing materials will be used. Fiber rolls will be certified weed-free by the manufacturer. If needed, fiber rolls will be installed along existing ground contours down-gradient of the staging area. Fiber rolls will be staked and backfilled and compacted along the up-gradient side of the fiber roll such that water flowing down the slope will not run under the fiber roll. Wood stakes will secure each end of each fiber roll and will be spaced 2 feet maximum on-center into the ground. If more than one fiber roll is placed in a row, the rolls will be overlapped at least 2 feet.

Instructions (see CGP Parts 2.1.2.4 and 7.2.10):

― Describe stormwater controls and other measures you will take to minimize the discharge of sediment or soil particles from stockpiled sediment or soil. Include a description of structural practices (e.g., diversions, berms, ditches, storage basins), including design, installation, and maintenance specifications, used to divert flows from stockpiled sediment or soil, retain or detain flows, or otherwise limit exposure and the discharge of pollutants from stockpiled sediment or soil.

― Also, describe any controls or procedures used to minimize exposure resulting from adding to or removing materials from the pile.

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Fiber rolls will be installed at the staging areas when potentially mobile sediments are present and the local weather forecast indicates rainfall of 0.25 inches or greater.

Maintenance of stormwater BMPs will be completed by the contractor at the direction of the US Forest Service.

4.5 Minimize Dust

Dust abatement will be implemented by application of water. Water trucks will be utilized to spray water on areas (if any) which are frequented with dust producing traffic or where dust mobilization by wind is occurring.

Specific Dust Controls

Dust Control # 1- Water Trucks

Water will be the primary dust control method. It will be transported and sprayed on the project site by the use of water trucks.

Contractor will provide and have available at all times during construction one truck capable of spreading water uniformly across the surface to be watered and equipped with spray nozzles capable of water for fire suppression. The water truck will have capacity and water supply sufficient to complete the Work specified. All water supply and watering equipment will be prepared and readied for use prior to beginning any Work. Contractor will indicate the source of water to be used prior to start of construction.

Dust control will be maintained throughout the project lifespan and implemented at the project site when deemed necessary by the US Forest Service.

Water will be applied to the project site if dust is visible or as requested by the US Forest.

Instructions (see CGP Parts 2.1.2.5 and 7.2.10):

Describe controls and procedures you will use at your project/site to minimize the generation of dust.

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4.6 Minimize the Disturbance of Steep Slopes

Steep slopes will be present at ditch plugs and fill areas. Steep slopes in these locations will be permanently vegetated with wetland sod mats and harvested sod clumps to mitigate erosion from rain events and surface water.

Specific Steep Slope Controls

Steep Slope Control # 1 – Wetland Sod Mats

Steep slopes on ditch plugs and fill areas will be covered with wetland sod mats on the bottom half of the slope. The wetland sod mats will be 16 feet long and 3.2 feet wide and staked into place with untreated wood stakes. Overlap between mats will be a minimum of 6 inches. The wetland sod mats will be heavily rooted with native riparian vegetation in a biodegradable mesh blanket.

Wetland sod will be installed upon the finished grading of ditch plugs and fill areas. The installation time for ditch plugs and fill areas is unknown and depends on construction sequencing chosen by the contractor.

All revegetation including wetland sod will be irrigated until winter dormancy.

Steep Slope Control # 2 – Harvested Sod Clumps

Steep slopes on ditch plugs and fill areas will be covered with harvested sod clumps on the top half of the slope. The sod bottom will be placed in direct contact with the soil. Edges of harvested sod will be fully covered with topsoil preventing exposure to the air.

Harvested sod clumps will be installed upon the finished grading of ditch plugs and fill areas. The installation time for harvested sod is unknown and depends on construction sequencing chosen by the contractor.

Instructions (see CGP Parts 2.1.2.6 and 7.2.10):

― Describe how you will minimize the disturbance to steep slopes (as defined by CGP

Appendix A).

― Describe controls (e.g., erosion control blankets, tackifiers), including design, installation and maintenance specifications, that will be implemented to minimize sediment discharges from slope disturbances.

― Also, see EPA’s Geotextiles BMP Fact Sheet at www.epa.gov/npdes/stormwater/menuofbmps/construction/geotextiles

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All revegetation including wetland sod will be irrigated until winter dormancy.

4.7 Topsoil

Existing topsoil present at the site will be preserved by minimizing the construction footprint. Vehicles and equipment will be constrained to access routes and the areas of the stream containing construction features. All excavated topsoil that is suitable for re-use will be used at the project site for ditch plugs, fill areas, and log jams. Ground protection mats will be used in areas where the US Forest Service deems necessary to protect existing ground and/or important site features.

Specific Topsoil Controls

Topsoil Control # 1 – Temporary Access Routes

The contractor will minimize disturbance of the surrounding areas by limiting travel to the approved temporary access routes to the extent possible. The contractor will maintain all access routes to prevent erosion or travelway degradation.

Temporary access routes will remain in-place throughout the construction period. They will be decommissioned prior to project completion.

All access routes will be maintained to prevent erosion and travelway degradation. They will be revegetated and irrigated following completion of the project.

Topsoil Control # 2 – Topsoil Re-use

Topsoil material generated on-site as a result of persuasion channel construction or other on-site construction activities will be used by Contractor as the first lift of topsoil material.

Topsoil re-use will be completed during ditch plug and fill area construction. The installation time for these features unknown and depends on construction sequencing chosen by the contractor.

Instructions (see CGP Parts 2.1.2.7 and 7.2.10):

― Describe how topsoil will be preserved and identify these areas and associated control measures on your site map(s).

― If it is infeasible for you to preserve topsoil on your site, provide an explanation for why this is the case.

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All exposed topsoil will be revegetated and irrigated until winter dormancy.

Topsoil Control # 3 – Ground Protection Mats

Where use of ground protection mats is specified in the meadow or as directed by the US Forest Service, the contractor will place the mats down once during initial establishment of these routes, leaving them in-place until the route is no longer required, at which point they shall be picked up.

Ground Protection Mats will be used during the course of the project as needed on temporary access routes. The installation time for these features will depend on construction sequencing chosen by the contractor..

Ensure ground protection mats are functioning as per the manufacturer’s specification and replace if necessary.

4.8 Soil Compaction

Topsoil will be compacted as necessary on the finished side slopes of ditch plugs and fill areas to facilitate plant growth. Vehicles will be restricted from traveling on these areas.

Specific Soil Compaction Controls

Soil Compaction Control # 1 – Soil Conditioning

Place topsoil over the rock/soil fill to a minimum thickness of 3 feet in 12-inch maximum lifts. Taper topsoil down to adjacent existing ground at a slope no steeper than 3H:1V in all directions.

Avoid compaction of topsoil to the extent possible to allow for optimal vegetation and growth.

Do not drive vehicles or equipment over areas where topsoil is installed.

The installation time for topsoil is unknown and depends on construction sequencing chosen by the contractor.

All exposed topsoil will be revegetated and irrigated until winter dormancy.

Instructions (see CGP Parts 2.1.2.8 and 7.2.10):

― In areas where final vegetative stabilization will occur or where infiltration practices will be installed, describe the controls, including design, installation, and maintenance specifications that will be used to restrict vehicle or equipment access or condition the soil for seeding or planting.

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4.9 Storm Drain Inlets

No storm drain inlets will be required or installed at the project site.

4.10 Constructed Stormwater Conveyance Channels

No stormwater conveyance channels will be required or installed at the site.

4.11 Sediment Basins

No sediment basins will be required or installed at the site.

Instructions (see CGP Parts 2.1.2.9 and 7.2.10):

― Describe controls (e.g., inserts, rock-filled bags, or block and gravel) including design, installation, and maintenance specifications that will be implemented to protect all inlets that will receive stormwater from your construction activities, and that you have authority to access.

― Also, see EPA’s Storm Drain Inlet Protection BMP Fact Sheet at www.epa.gov/npdes/stormwater/menuofbmps/construction/storm_drain

Instructions (see CGP Parts 2.1.3.1 and 7.2.10):

If you will be installing a stormwater conveyance channel, describe control practices (e.g., velocity dissipation devices), including design specifications and details (volume, dimensions, outlet structure), that will be implemented at the construction site.

Instructions (see CGP Parts 2.1.3.2 and 7.2.10):

If you will install a sediment basin, include design specifications and other details (volume, dimensions, outlet structure) that will be implemented at in conformance with CGP Part 2.1.3.2.

― At a minimum, sediment ponds must provide storage for either (1) the calculated volume of runoff from the 2-year, 24-hour storm (see CGP App. H), or (2) 3,600 cubic feet per acre drained

― Sediment ponds must also utilize outlet structures that withdraw water from the surface, , unless infeasible

― Also, see EPA’s Sediment Basin BMP Fact Sheet at www.epa.gov/npdes/stormwater/menuofbmps/construction/sediment_basins

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4.12 Chemical Treatment

No treatment chemicals will be used or stored at the project site. Chemicals such as petroleum products have specific use and clean-up requirements. These specifications are in the project’s spill plan located in Appendix M.

4.13 Dewatering Practices

No dewatering is anticipated for the Upper Corral Creek Meadow Restoration Project. The project will be constructed during the dry season (mostly dry channels and meadow areas).

4.14 Other Stormwater Controls

Administrative controls will be implemented in addition to site-specific BMP’s. The administrative controls will include designating access routes within the site to maximize travel on stable surfaces and minimize the construction footprint.

Instructions (see CGP Parts 2.1.3.3 and 7.2.10.2):

If you are using treatment chemicals at your site, provide details for each of the items below.

This information is required as part of the SWPPP requirements in CGP Part 7.2.10.2.

Instructions (see CGP Parts 2.1.3.4 and 7.2.10):

If you will be discharging stormwater that is removed from excavations, trenches, foundations, vaults, or other similar points of accumulation, include design specifications and details of all dewatering practices that are installed and maintained to comply with CGP Part 2.1.3.4.

Instructions:

― Describe any other stormwater controls that do not fit into the above categories.

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4.15 Site Stabilization

Site Stabilization Practice #1 – Microtopography and Woody Material Vegetative Non-Vegetative Temporary Permanent

Description of Practice

Contractor will install microtopography on disturbed surfaces after the final grade surface is completed. Microtopography consists of low and high features (ridges and furrows) constructed in the finished grade surfaces. This treatment creates areas to trap seed and organic matter for new plant growth.

Approximately 20 percent of the total surface area will consist of high points (ridges) and approximately 20 percent shall consist of low points (furrows). Typically horizontal spacing from the highest points to the lowest points should be in the range of 3 to 10 feet, but the pattern should be irregular rather than gridded. Low areas should not be continuous. Maximum deviation from the design finished grade should be no more than 0.5 feet. The total area of ridges above finished grade shall roughly equal the total area of furrows below finished grade.

Contractor will place salvaged woody debris and slash over disturbed surfaces to create additional roughness in the finished grade surface, provide shelter and organic matter for reestablishing plants, and deter future use of the decommissioned travelway.

Woody debris and slash will be placed on top of re-contoured road surfaces in stable positions.

Coarse wood will consist of salvaged tree and shrub trunks or branches larger than 3 inches in diameter at the larger end and longer than 8 feet in length. It will also include shrub clumps longer than 8 feet. One piece of coarse wood will consist of either: 1) shrub clump with a minimum of three branches larger than 3 inches in diameter and longer than 10 feet, or 2) three tree and shrub trunks or branches larger than 3 inches in diameter and longer than 10 feet, placed together in one location. Brush will consist of all smaller tree and shrub parts not within the definition of Coarse Wood. These materials will be obtained and preserved from clearing and grubbing or trail-building operations associated with the specified work.

Instructions (see CGP Parts 2.2 and 7.2.10):

The CGP requires you to immediately initiate stabilization when work in an area of your site has permanently or temporarily stopped, and to complete certain stabilization activities within prescribed deadlines. See CGP Part 2.2.1. The CGP also requires that stabilization measures meet certain minimum criteria. See CGP Part 2.2.2. For your SWPPP, you must include the following:

― Describe the specific vegetative and/or non-vegetative practices that will be used to stabilize exposed soils where construction activities have temporarily or permanently ceased. Avoid using impervious surfaces for stabilization whenever possible.

― Also, see EPA’s Seeding BMP Fact Sheet at www.epa.gov/npdes/stormwater/menuofbmps/construction/seeding

― Once you begin construction, consider using the Grading/Stabilization Activities log in Appendix H of the Template to document your compliance with the stabilization requirements in CGP Part 2.2

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Clump planting from available vegetation along the temporary access route limits will be completed throughout the re-contouring at a minimum of 6 plantings per 100 linear feet. This will be accomplished with an excavator and the clump shall be of sufficient size to maintain all the root system and contain adequate soil to enhance favorable growth. Duff material will be scattered along the completed re-contoured road. This duff material may consist of a combination of needles, organic material, plants, decomposing stumps, and logs.

Installation will occur during the decommissioning of temporary access routes and disturbed areas. This will happen prior to 9/19/2015 (the project end date).

US Forest Service will approve final site condition. If it is unacceptable, contractor will re-do the microtopography and woody material placement until it is acceptable.

[Repeat as needed for additional stabilization practices.]

Site Stabilization Practice #2 – Re-vegetation

Vegetative Non-Vegetative Temporary Permanent

Description of Practice

Re-vegetation will occur on ditch plugs, fill areas, along persuasion channels, at berm removals, near log jams, and all other disturbed areas. Vegetation will minimize these disturbances and be natural to the meadow. Vegetation will be in the form of wetland sod mats, harvested sod clumps, potted plants, and seed. The re-vegetation contractor will be responsible for installing the vegetation for the project.

Re-vegetation will commence in-line with other project activities as they completed. Exact timing for re-vegetation will depend on the contractor’s chosen construction sequencing. Revegetation activities will continue for two years following construction.

Plants will be reinstalled and seeding reapplied if vegetation is dislodged or disturbed by surface water, wildlife, or human activity.

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SECTION 5: POLLUTION PREVENTION STANDARDS

5.1 Potential Sources of Pollution

Construction Site Pollutants

Pollutant-Generating Activity

Pollutants or Pollutant Constituents

(that could be discharged if exposed to stormwater)

Location on Site (or reference SWPPP site map where this is shown)

Equipment/Vehicle Traffic Dust Temporary Access Roads

Excavation Sediment Persuasion Channels, Ditch Plugs, Fill Areas, Log Jams

Equipment Leaks Fuels, Oils, Lubricants Temporary Access Roads, Persuasion Channels, Ditch Plugs, Fill Areas, Log Jams

Instructions (see CGP Part 7.2.7):

― Identify and describe all pollutant-generating activities at your site (e.g., paving operations; concrete, paint, and stucco washout and waste disposal; solid waste storage and disposal).

― For each pollutant-generating activity, include an inventory of pollutants or pollutant constituents associated with that activity (e.g., sediment, fertilizers,…