21.11.17 - WY LCGP Compiled SWPPP - Final.pdf

Stormwater Pollution Prevention Plan

SWPPP

For:

Federal Highway Administration Western Federal Lands Highway Division

Table of Contents

SWPPP TABS

TAB 1: SWPPP Narrative

TAB 2: WYPDES Permit (WY Large Construction General Permit)

TAB 3: NOI, WY DEQ Acknowledgement, Other Applicable Correspondence

TAB 4: Delegation of Authority

TAB 5: Site Maps (Indicate Wetlands, Waters, other Waterbodies)

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 Certificates and SWPPP Training Log

TAB 13: Government-Selected Waste, Borrow, Staging Sites (Indicate BMPs at Each Site)

TAB 14: Grading and Stabilization Log

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

TAB 16: Quality Assurance Checklist

TAB 17: WYPDES Notice of Termination (NOT)

Tab 1 - SWPPP Narrative

Revise and update as needed per SCR 107 and SCR 157

STORM WATER POLLUTION PREVENTION PLAN TEMPLATE

PLEASE READ THIS PRIOR TO COMPLETING FORM: This SWPPP template is intended to help operators in developing a

SWPPPP that complies with Part 9.2 of the Wyoming Department of Environmental Quality WYPDES Storm Water Program

Large or Small Construction General Permit. The SWPPP is a site specific, dynamic plan designed to control erosion and sedimentation, prevent storm water contamination, and comply with requirements of the Clean Water Act. It is the permittee’s responsibility to ensure all required items in the Large Construction General Permit are adequately addressed, and that the SWPPP is developed, implemented, and maintained.

Project or Site Information:

Project Location as either Quarter/Quarter, Section, Township, Range OR Street Address and City:

SE/SE, Section 18, T42N, R116W

SW/SW, Section 17, T42N, R116W

NW/SW, Section 17, T42N, R116W

NE/SW, Section 17, T42N, R116W

SE/NW, Section 17, T42N, R116W

SW/NE, Section 17, T42N, R116W

NW/NE, Section 17, T42N, R116W

SW/SE, Section 8, T42N, R116W

NW/SE, Section 8, T42N, R116W

SW/NE, Section 8, T42N, R116W

SE/NE, Section 8, T42N, R116W

NE/NE, Section 8, T42N, R116W

SE/SE, Section 5, T42N, R116W

SW/SW, Section 4, T42N, 116W

NW/SW, Section 4, T42N, 116W

NE/SW, Section 4, T42N, R116W

Permittee (Legally Responsible Entity) Information:

Company Name: FHWA Western Federal Lands

Legally Responsible Person Name: Scott Smithline

Mailing Address: 610 E. 5th Street

City, State, ZIP Code: Vancouver, WA, 98661

Phone Number: 360.619.7785

Permit Number: WYR10

Project/Site Name:

Moose-Wilson Road, Phase 1; WY NPS GRTE 2017(1)

Part 9.2.1 SWPPP - Administrator:

Company or Organization: General Contractor

Name: TBD

Title: TBD

Phone #: TBD

Email: TBD

Part 9.2.2 – Site Description:

9.2.2.1

Brief description of nature of the construction activity:

The types of construction include: reconstruction, grading, aggregate, asphalt pavement, minor concrete pavement, drainage, utilities, sewer, and site improvements. Two locations on the road that are adjacent to wetlands will be rehabilitated to correct drainage issues and improve road conditions. The existing 1.1-mile segment of the Moose-Wilson Road that is currently unpaved will be rehabilitated and paved, but the approximate alignment of the road will be retained. Parking areas, entrance stations, and trailheads will be expanded and improved.

9.2.2.2

Proposed sequence of major activities and an estimated date final stabilization (defined in Part 2.9) is expected to be achieved.

Below is the proposed sequence of major construction activities.

1. Hauling and stockpiling aggregate

2. Erosion and sediment control

3. Clearing and grubbing

4. Utility trenching

5. Roadway excavation/embankment

6. Placing roadway aggregate/patching/paving/fill slopes

7. In-water work (culvert/bridge/riprap replacement)

8. Seeding and mulching

9.Parking lots and turnouts rehabilitation

• Erosion and sediment control

• Clearing and grubbing

• Roadway excavation/embankment

• Placing roadway aggregate

• Curbs and sidewalks

• Paving

• Fencing/landscaping

9.2.2.3

Estimate of total area of the site: _____15.7_acres and

Estimate of total area of the site expected to undergo disturbance related to the construction activity including clearing, excavation, and grading as well as offsite borrow areas, access roads, areas for support activities and staging/storage areas. _____15.7_acres

Table 1 Break-down of disturbed acres

Location Estimated Disturbance Area (acres)

Levee Access Road Staging Area 4.3

Southern Staging Area 3.8

Mainline 3.8

Poker Flats Parking Area 0.8

Granite Canyon Trailhead 1.0

Granite Entrance Station 2.0

Total 15.7

9.2.2.4

A description of storm water discharges from support activities dedicated to the construction site including, but not limited to, off-site materials borrow areas, concrete or asphalt batch plants, equipment staging yards, material storage areas and access roads constructed for the project.

To be updated by contractor

Off-site material borrow areas:

Concrete batch plants:

Asphalt batch plants:

Equipment staging yards:

Material storage areas:

Access roads:

9.2.2.5

Brief description of existing vegetation across the portion of the site to be disturbed. For vegetated areas also provide an estimate of the percent of the ground within that area that is covered by the leaf “canopy” of the existing plants (percent vegetative ground cover). (Pre-disturbance photos are helpful.):

The vegetation nearest in the road corridor that may be disturbed includes areas of sage-shrubland and a variety of other plant associations (e.g., aspen forest, lodgepole pine forest, mixed grassland, wet meadow herbaceous vegetation). No special or unique vegetation communities are known to occur in the project area. In some areas, vegetation has been denuded in areas immediately adjacent to the road due to vehicles parking outside designated parking areas and turnouts. These areas continue to produce vegetation in the spring and summer until used by vehicles. Excluding these barer areas, percent cover ranges from 70%—80%. Please see attached Photos 1–3 at the end of Tab 1.

9.2.2.6

List the location and description of any other potential pollution sources including, but not limited to vehicle fueling, equipment maintenance, fertilizer storage, chemicals, or paint:

To be updated by contractor:

Diesel vehicle fueling: Fueling will take place at the location of vehicle along roadway or within staging areas.

Fueling areas will be at least 50 feet away from drainages and water courses. Spill kits will be readily available whenever fueling operations take place.

Equipment maintenance: Maintenance will take place at location of equipment along roadway or within staging areas.

Paint storage: Paint will be stored inside of material storage areas.

Herbicide: Noxious weeds will be treated within the disturbance limits and herbicide will be stored off-site.

9.2.2.7a

Name of the drainage or water body (surface water(s) of the state) that may receive a storm water discharge from the construction activity and the size, type, and location of any outfall. Note: Where discharges are to unnamed drainages, provide the name of the first named drainage that will receive that discharge if the first named drainage is within 1000 feet of the discharge:

1. John Miller Ditch

2. Chicago Ditch

3. Kaufman Creek

There are no outfalls. All potential stormwater discharge would be from sheet flow into drainages or watercourses shown in Tab 5.

9.2.2.7b

If the storm water discharge is to a separate storm sewer, indicate the name of the municipal owner of that system, the location of the storm sewer outfall, and the name of the drainage or water body that will receive the storm water discharges from the municipal outfall:

N/A

9.2.2.8

Identify any water body listed as impaired under section 303(d) of the federal Clean Water Act due to sediment, suspended solids or turbidity or that has an approved TMDL for sediment, suspended solids or turbidity that is within 2000 feet of, and may receive storm water flow from the permitted construction activity. The state’s most recent 303(d) list can be found in the current Integrated 305(b) and 303(d) Report. The report can be found on the

WDEQ Water Quality Division Watershed Management website under Water Quality Assessment at:

http://deq.wyoming.gov/wqd/water-quality-assessment/resources/reports/. Approved TMDLs can be found on another webpage at http://deq.wyoming.gov/wqd/tmdl/resources/completed-projects/

Name of impaired water body:

N/A. No 303(d) listed water bodies occur near the project area.

Part 9.2.3 -Site Maps.

One (or more) map(s) should be prepared that provide, at a minimum, the following information. The map(s) should be prepared so that all of the required information is clearly displayed and it is clear what BMPs will be installed in each major stage of construction, including the time between the cessation of active construction and final stabilization. Provide multiple maps as necessary to clearly describe BMP timing and placement. The scale of the map(s) must be sufficient to identify the location of all the items listed below:

9.2.3.1 Construction site boundaries. Refer to Tab 6.

9.2.3.2 All areas of soil disturbance and areas that are to remain undisturbed. Refer to Tab 6.

9.2.3.3 The location of surface waters of the state as defined in Part 2.21 of the Large

Construction General Permit (LCGP). Refer to Tab 5.

9.2.3.4 Areas used for storage of building materials, soils, wastes, fuel, and concrete washout.

Contractor to update.

9.2.3.5 Locations of all existing or planned temporary or permanent erosion and sedimentation controls. Refer to Tab 6.

9.2.3.6 Locations of all other structural best management practices for pollutants other than sediment, including but not limited to, fueling/maintenance areas and concrete washout disposal areas. Contractor to update.

9.2.3.7 Site topography or storm water drainage patterns including lines showing boundaries between different drainage areas in the project area(s). Refer to Tab 6.

9.2.3.8 Identify areas where disturbed soils may be highly erodible due to soil type and/or slope.

Such areas may be identified prior to construction or discovered and addressed during construction. Contractor to update.

9.2.3.9 Areas where dedicated support activities (e.g. operations producing earthen materials such as sand and gravel, staging areas, portable asphalt or concrete batch plants) occur and are to be covered under the same general permit authorization as the construction activity. See Part 1.2.2 of the LCGP for more information on what can be covered under an authorization. Activities covered under another WYPDES storm water authorization (such as a mineral mine with separate coverage) do not need to be included. Refer to Tab 6.

Contractor to update.

9.2.3.10 Storm water discharge locations. Show all points or areas where storm water will discharge from the site. Also include storm drain inlets where storm water entering the storm drain system may leave the construction site and any points where storm water will discharge directly to a surface water of the state within the construction site. Include discharge locations for offsite operations covered under this permit. Refer to Tab 5.

9.2.3.11 Also note all locations where storm water will run on to the construction site from areas outside the site boundaries. Refer to Tab 6.

9.2.3.12 Show the locations of any dewatering discharge points and all BMPs associated with dewatering. Contractor to update when plan is complete.

9.2.3.13 North Arrow. Include a legend where needed for clarity. Refer to Tab 5 and Tab 6.

Part 9.2.4 – Best Management Practices (BMPs)

Please note: Storm water structural best management practices are expected to withstand and function properly during precipitation events up to a 2-year, 24-hour storm event. Visible and measurable erosion (see Part 7.5 of the LCGP) that leaves the construction site from such storm events should be minimal. The 2-year, 24-hour storm event in Wyoming ranges from 0.8 to 2.6 inches. An isopluvial map of the 2-year, 24-hour storm depth (for your location) is available on the DEQ storm water website. Permittees may substitute equivalent data published by the local municipality or regulatory agency.

9.2.4.1 Erosion and sediment controls.

9.2.4.1a

Erosion prevention BMPs. Clearly describe in detail the storm water erosion control BMPs that will be used for erosion control during construction related earthwork activities. Indicate the location of these measures on the site map required above, or a similar separate map. Examples of BMPs for erosion prevention include, but are not limited to preserving existing vegetation, scheduling (e.g., minimizing site disturbance at a given time), surface roughening, permanent or temporary seeding and planting, mulches, soil binders or tackifiers, erosion control blankets and mats, wind erosion control, storm water diversion practices upslope of a construction site, pipe slope drains, and outlet protection.

Erosion prevention BMPs narrative:

1. Preserve existing vegetation: Only the ground necessary for project work will be disturbed. The areas adjacent to the project site are fully vegetated with grasses, forbs, and shrubs, and will be preserved.

2. Scheduling: The project will be sequenced as described in 9.2.2.2, which will minimize disturbance at one site at a given time.

3. Surface roughening: When soil work is complete on slopes, tracked machinery will operate on bare soil which will increase infiltration, reduce erosion, and trap sediment. Track imprints will rub perpendicular to the slope contours.

4. Minimizing ground disturbance: Ground disturbance will only occur where necessary. Construction fence will be installed in areas upstream of drainage ditches and around sensitive areas.

5. Permanent seeding: Permanent seeding will be implemented on areas of disturbance when earthwork is complete. The seed mix will be determined by Grand Teton NP and applied according to NRCS guidelines and covered with erosion control blankets. All permanent seeding and associated BMPs will be completed by Grand

Teton NP.

6. Erosion control blankets: When all earthwork and permanent seeding operations are complete, erosion control blankets will be installed on all slopes with exposed soil by Grand Teton NP.

9.2.4.1b

Sedimentation Control BMPs. Clearly describe in detail the storm water sedimentation control BMPs that will be used for sediment control during construction related earthwork activities. Indicate the location of these measures on the site map required above, or a similar separate map. Examples of BMPs for sedimentation control include, but are not limited to sediment barriers such as straw bales, gravel berms, silt fences, fiber rolls, wattles; sediment traps and basins, storm drain inlet protection, entrance/exit tracking controls, undercut lots where curb and gutter are installed, vegetated buffer strips, grassed waterways, water bars, and water wings.

Sedimentation Control BMPs narrative:

1. Silt fence: 880 linear feet of silt fence will be installed along portions of the Granite Entrance Station area and

Granite Canyon Trailhead area (see sheets in Tab 6). 1,464 linear feet of silt fence will also be installed around any drainage along the mainline. Silt fences will be installed approximately 6 feet beyond the toe of the slope.

2. Fiber rolls: 10,940 linear feet of fiber rolls will be installed at all inlets and slopes that would contribute to drainages along Moose-Wilson Road and at the other project sites (see sheets in Tab 6). Fiber rolls will also be installed around the perimeter of soil stockpiles and borrow piles. Fiber rolls will be Aspen Excelsior Sediment

Logs with biodegradable netting.

3. Vegetative buffers: Vegetation will only be removed when necessary to complete the project. This will leave existing vegetation as buffer areas.

4. Vehicle tracking control pad: Vehicle tracking pads will be at entrances to staging areas as well as at Poker Flats and Granite Canyon Trailhead in order to reduce sediment tracking onto paved surfaces. If the tracking pad is determined to be inadequate during inspections, street sweeping or scraping will be implemented.

9.2.4.1c

Stabilization Measures. Describe temporary and permanent stabilization measures such as the BMPs listed in the previous Erosion Prevention and Sediment Control sections for exposed soil areas where activities have temporarily or permanently ceased. Refer to Part 7.12 for additional information on stabilization requirements and timing.

Please note: temporary or permanent stabilization measures are required in areas where further work is not expected for 14 days or more

Temporary and permanent stabilization narrative:

Temporary stabilization measures: It is expected that the project work will take place over two construction seasons. If there is an interruption in project activities lasting more than 14 days occurs, the following BMPs will be implemented, as discussed under 9.2.4.1a:

1. Surface roughening

2. Preservation of existing vegetation

Permanent stabilization:

1. Permanent seeding: Permanent seeding will be implemented on areas of disturbance when earthwork is complete. The seed mix will be determined by Grand Teton NP and applied according to NRCS guidelines and covered with erosion control blankets. All permanent seeding and associated BMPs will be completed by Grand

Teton NP.

2. Erosion control blankets: When all earthwork is permanent and seeding operations are complete, erosion control blankets will be installed on all slopes with exposed soil.

9.2.4.2

Construction Site Dewatering. Clearly describe the specific BMPs that will be used for discharges from construction site dewatering. Discharges must meet the conditions specified in Part 7.11 of the LCGP including the use of settling or filtration techniques as appropriate and the use of velocity dissipation devices at the outlet.

Construction Site Dewatering narrative:

Dewatering and water diversion operations will be implemented at Kaufman Creek during the bridge rehabilitation. Procedures will follow those outlined in FHWA Standard 157-5: Temporary Diversion Channels and

Section 157 of Special Contractor Requirements. Specifically, the operation will use the Diversion Channel Plan and the contractor will be required to follow Section 157.10 of Special Contractor Requirements—Diversions.

Isolation berms will be installed on either side of the disturbance limits and water will be pumped into a side diversion channel. Please see Sheet J.13 and Standard 157-5 in Tab 6 of the SWPPP binder for details. Contractor to update when a more site-specific temporary diversion plan is completed.

9.2.4.3 Operational Controls.

9.2.4.3a

Good Housekeeping BMPs. Describe in detail the good housekeeping BMPs that will be implemented to maintain a clean and orderly facility. At a minimum, this plan shall address litter, debris, chemicals, fertilizers and sanitary waste. Include measures to remove sediment that has left the site:

Good Housekeeping narrative:

Details to be updated by contractor. The following items in red need to be addressed and included per company protocols:

1. Vehicle and equipment cleaning: Washing operations will be completed off-site. Vehicles and equipment with visible dirt or plant parts will not be allowed into the project area until they are washed. If washing must occur onsite, washing stations will be on impervious surfaces, 50 feet away from drain inlets or watercourses, and use the least amount of water as possible.

2. Vehicle and equipment fueling:

3. Vehicle and Equipment maintenance:

4. Vehicle track pads/street sweeping: Vehicle tracking pads will be at entrances to staging areas as well as at

Poker Flats and Granite Canyon Trailhead in order to reduce sediment tracking onto paved surfaces. If the tracking pad is determined to be inadequate during inspections, street sweeping or scraping will be implemented.

5. Material delivery and storage:

6. Spill prevention and control:

7. Paving, saw cutting, and grinding:

9.2.4.3b

Bulk Storage of Petroleum Products. Describe in detail the specific practices for bulk storage of petroleum products at the site. (See Part 9.2.4.3.b of the LCGP for more information). An SPCC plan may also be referenced.

Bulk Storage of Petroleum Products narrative:

To be completed by contractor

9.2.4.3c and d

Concrete Waste. Clearly describe the specific practices that will be used to contain concrete wash waters, grindings or slurry from entering storm drains or surface waters of the state. Please note: Concrete grindings must be disposed of in accordance with the regulations and policies of the WDEQ Solid and Hazardous Waste

Division. Include portable concrete batch plants and asphalt batch plants covered under this permit.

Concrete Waste narrative:

Concrete waste and wash-out is prohibited within Grand Teton NP boundaries. All concrete waste on wash-out operations will be off-site in areas where it will not enter storm drains or surface waters of the state.

9.2.4.3e

Employee Training. Describe employee training that will be provided to inform personnel of their responsibility in implementing the practices and controls included in the SWPPP.

Employee Training narrative:

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

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

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

• Personnel responsible for conducting inspections;

• Personnel responsible for taking corrective actions.

9.2.5 Maintenance

Maintenance Schedule. Describe the schedule or intervals and conditions upon which BMPs described in the

SWPPP will be maintained. Please note: BMPs found to be in need of repair or maintenance shall be repaired or maintained in accordance with Appendix C, Part 2 of the LCGP. Repair and maintenance activities shall be documented and maintained in accordance with Part 10.7.

Maintenance Schedule/Conditions narrative:

1. Preserve existing vegetation: This BMP should not require any maintenance. The project area will be clearly defined by construction fencing or silt fencing.

2. Scheduling: This BMP should not require any maintenance. If the schedule or sequence of the project changes, it will be changed as to stay in accordance with the WYPDES Storm Water Program Large or Small Construction

General Permit.

3. Surface roughening: Areas with surface roughening BMP will be inspected. If the inspection determines that the surface roughening is ineffective (e.g., flattened by traffic, affected by storm events, installed incorrectly), the surface will be roughened again.

4. Minimizing ground disturbance: This BMP should not require any maintenance.

5. Silt fence: Silt fences will be monitored during each site inspection. During the inspection, silt fence specifications will be reviewed. If sediment reaches 1/3 of the height of the fence, it will be cleared within 24 hours of discovery if construction is active. If construction is inactive, maintenance will occur within 14 days of discovery. Silt fence will be repaired within the same timeframes if it appears undercut, split, torn, sagging, or overly weathered. Additional silt fences will be installed where there are deficiencies in efficacy.

6. Fiber rolls: Fiber rolls will be monitored during each site inspection. During the inspection, fiber roll specifications will be reviewed. If sediment reaches 1/3 of the height of the device, it will be cleared within 24 hours of discovery if construction is active. If construction is inactive, maintenance will occur within 14 days of discovery. Fiber rolls will be repaired within the same timeframes if they appear undercut, split, torn, unravelling, or slumping. Additional fiber rolls will be installed where there are deficiencies in efficacy. Fiber rolls will be maintained and repaired so that they remain firmly anchored and trenched according to specifications.

7. Vegetative buffers: This BMP should not require any maintenance.

8. Vehicle tracking pad: Vehicle tracking pads will be inspected as part of the scheduled inspection. Maintenance will be required if the tracking pad(s) is clogged with sediment (if implementing cattle guard/rumble strip style), temporary roadway ditches are not clear, or voids are filled (if using aggregate style). Maintenance will be required within 24 hours of discovery if construction is active. If construction is inactive, maintenance will occur within 14 days of discovery. If the selected vehicle tracking pads are inadequate, routine street sweeping or scraping will be implemented.

9.2.6 Inspections

Inspection Schedule. Describe in detail an inspection program and schedule that meets the requirements of Part

10 of the LCGP.

Inspection Schedule narrative:

Inspections will be completed by a qualified SWPPP inspector, as defined in Part 10 of the LCGP. When construction is active, inspections will follow one of the two options presented below, and will be determined by the SWPPP Administrator:

1. At least once every seven calendar days, or

2. At least once every 14 calendar days and within 24 hours of any precipitation and/or snow melt event which exceeds 0.5 inches. Precipitation measurements would come from the Western Regional Climate Center’s Remote

Automatic Weather Stations (RAWS) real-time data. The Grand Teton RAW Station would be used, which is approximately 7 miles from the project area and at similar elevation (6,500 feet).

When construction is temporarily shut down with temporary stabilization or permanently shut down with final stabilization, inspections will be conducted once every 30 calendar days. In the case of permanently inactive construction sites, inspections will be conducted once every 30 days until final stabilization is reached. Final stabilization is defined as the site demonstrating a uniform perennial vegetative cover with a density of 70% of the typical or native background vegetative cover for the area has been established on all disturbed unpaved areas and areas not covered by permanent structures.

It is not anticipated that any sites in the project area will require more frequent inspections than noted above.

Because Moose-Wilson Road is not plowed in the winter, there will likely be several months that monthly inspections cannot be completed, as allowed in Section 10.2.4 of the LCGP. Inspections reports will document the conditions of the project site and why inspections were not completed. Inspections will be conducted as long the road is driveable with a 4-wheel drive vehicle.

Any areas that have reached final stabilization will not be inspected but will be documented as such in facility

SWPPP.

Inspections will include: the construction site perimeter; material/waste storage areas; potential storm water discharge sites; ingress/egress locations to the project area; vehicle maintenance locations; and all BMPs.

Inspection reports will follow the exact requirements in Section 10.7 of the LCGP. Copies of the inspection reports will be retained with the SWPPP and copies will be available for the Administrator; copies will be retained for at least three years.

9.2.7 Signature and Certification

Authorized signatories for this SWPPP are the following (see LCGP or SCGP Part 11.7.1):

For Corporations: A principal executive officer of at least the level of vice president or the manager of the site for which this SWPPP is being implemented who has day to day management control and decision-making authority.

For partnerships: A general partner.

For a sole proprietorship: The proprietor

For a municipal, state, federal or other public facility: Either a principal executive officer or ranking elected official.

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

Printed Name of Person Signing Title

Signature Date Telephone c:\arehner\documents\construction\cgp_2020\CGP swppp_template_2020_rev_fillable_word.doc

Photo 1 Typical sage-shrubland vegetation community directly along the project area that may be disturbed

Photo 2 Typical forested vegetation community along the project area that may be disturbed

Photo 3 Typical sage-shrubland vegetation community directly along the project area that may be disturbed

Tab 2 - WYPDES Permit (WY Large Construction General Permit) ii

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TABLE OF CONTENTS

Preamble ......................................................................................................................................................... vi

Part 1 Coverage Under This Permit

1.1 Permit area

1.2 Storm water discharges covered under this permit

1.3 Storm water discharges not covered under this permit

Part 2 Definitions

Part 3 Notice of Intent (NOI) – Obtaining an Authorization to discharge

3.1 Who must apply

3.2 Deadline to apply

3.3 Review of applications

3.4 Expedited processing

3.5 Form of NOI submission

3.6 Field‐wide permit coverage

3.7 NOI contents

3.8 Application package for a new project without previous coverage

3.9 Renewing an existing authorization to discharge (‘early expiration’)

3.10 Continuation of coverage under a renewed master general permit

3.11 Agreement to comply

3.12 Projects that may discharge to class 1 waters

3.13 Denial of coverage

3.14 Individual permit required

3.15 Temporary coverage

Part 4 Notice of Transfer and Acceptance (NOTA)

Part 5 Notice of Termination (NOT)

Part 6 Fees

Part 7 Effluent Limits

7.1 Quality of discharge

7.2 Best management practice selection, installation and maintenance

7.3 Erosion and sediment controls

7.4 Minimum considerations

7.5 Visible or measurable erosion

7.6 Consistency with a Total Maximum Daily Load

7.7 Recovery of offsite sediment

7.8 Inlet protection

7.9 Off‐site tracking of sediment

7.10 Use of sediment ponds or basins for sediment control

7.11 Construction site dewatering

7.12 Soil stabilization

7.13 Pollution prevention measures

7.14 Minimum storm size for BMPs

7.15 Allowable discharges

iv

7.16 Prohibited discharges

7.17 Chemical treatment for sediment removal

7.18 Sanitary facilities

7.19 Construction project identification

7.20 Requirements of other agencies

Part 8 Wyoming Sage‐Grouse Executive Order

8.1 Sage Grouse Executive Order 2019

8.2 Mule Deer and Antelope Migration Protection Executive Order 2020‐1

8.3 Determining applicability of the SGEO and/or MCEO

Part 9 Storm Water Pollution Prevention Plan

9.1 General requirements

9.1.1 Scope of SWPPP

9.1.2 Joint SWPPPs

9.1.3 Pollutant source identification

9.1.4 Plan implementation

9.1.5 Plan amendment

9.1.6 Plan retention

9.1.7 Plan availability

9.1.8 Guidance

9.2 Content

9.2.1 SWPPP administrator

9.2.2 Site description – narrative

9.2.3 Site maps

9.2.4 Best management practices (BMPs)

9.2.5 Maintenance

9.2.6 Inspections

9.2.7 Signature

Part 10 Self Monitoring and Inspection Requirements

10.1 Site inspections

10.2 Inspection schedules

10.3 Scope of inspections

10.4 Qualified person

10.5 Alternative inspection plans and schedules

10.6 Areas that meet final stabilization

10.7 Records

10.8 Severe weather exception

10.9 Winter conditions

10.10 Retention of reports

10.11 Collection and submission of self‐monitoring information

Part 11 Standard Permit Conditions

11.1 Duty to comply

11.2 Penalties for violations of permit conditions

11.3 Need to halt or reduce activity not a defense

11.4 Duty to mitigate

11.5 Duty to provide information

11.6 Other information

11.7 Signatory requirements

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11.8 Penalties for falsification of reports and monitoring systems

11.9 Oil and hazardous substance liability

11.10 Property rights

11.11 Severability

11.12 Transfers

11.13 State laws

11.14 Facilities operation and maintenance

11.15 Monitoring and records

11.16 Availability of reports

11.17 Adverse impact

11.18 Bypass or upset of treatment facilities

11.19 Upset conditions

11.20 Access

11.21 Access Records

11.22 Permit actions

11.23 Reopener clause

11.24 Civil and criminal liability

Appendix A Class 1 Waters Appendix B Acronyms Used in This Document Appendix C Pollution Control Guidelines vi

Preamble

The purpose of this Preamble is to provide the construction project “operator” (permittee) who submits an application package for coverage under the Large Construction General Permit (LCGP) to Discharge Storm Water Associated with Large Construction Activity with a summary of the requirements of this permit.

The basic principle of the permit is to identify pollutant sources associated with construction activities and install and maintain Best Management Practices (BMPs) to reduce the potential discharge of pollutants from the construction project. The degree of pollution control necessary will vary depending on the site and the associated construction activity, but the BMPs and pollution control measures must collectively prevent exceedances of applicable water quality standards in Surface Waters of the State.

Potential pollutants likely to be a problem at sites are sediment, fuels, lubricating oils, construction materials, various wastes, fertilizers, or pesticides. Proper management of these materials is essential to ensure potential pollutants are not discharged from the construction activity to Surface Waters of the State.

In order to achieve compliance with the conditions of this permit, the permittee is required to address the effluent limitations in Part 7 by developing a Storm Water Pollution Prevention Plan (SWPPP) as described in Part 9 and by applying at least the minimum management requirements found in Appendix C. The SWPPP must clearly address the effluent limitations and the selected BMPs to be used to manage pollutant sources and ensure appropriate protection of state surface waters.

The permit requires that the entire site achieve a “finally stabilized” condition before permit coverage may be terminated or allowed to expire. In Wyoming’s largely semi‐arid climate, the time necessary to achieve a “finally stabilized” condition often requires permit coverage well beyond the end of the conventional earthwork and facility construction phase to ensure vegetation or other site stabilization measures are in place.

Large Construction General Permit

WYR10-0000

This permit is effective only with separate written authorization

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Part 1 Coverage Under This Permit

1.1 Permit area. The permit covers all areas within the State of Wyoming except areas within the Wind River

Indian Reservation where the State does not have jurisdiction.

1.2 Storm water discharges covered under this permit

1.2.1 Storm water discharges associated with new and existing large construction activities.

1.2.2 Storm water discharges from areas that are dedicated to support activities (e.g., operations producing earthen materials, such as sand and gravel, staging areas, portable asphalt or concrete batch plants) for use at a single large construction activity may be covered under this permit provided:

1.2.2.1 The support activity is not an on‐going operation serving multiple, unrelated construction projects and does not operate beyond the completion of the construction activity.

1.2.2.2 Appropriate best management practices are identified in the storm water pollution prevention plan for discharges from the support activity.

1.2.3 Discharges from dewatering of collected storm water and minor amounts of ground water from excavations and depressions on a permitted site provided that requirements specified in Part 7.11 are followed and necessary best management practices (BMPs) are installed and effective.

1.2.4 Storm water discharges from “large construction activities” receive coverage under this permit when the Administrator or his agent provides a written authorization to the applicant that the Notice of Intent has been accepted and the permitted activity is covered under the general permit.

1.2.5 This permit does not preempt or supersede the authority of local agencies to prohibit, restrict, or control discharges of storm water to storm drain systems or other water courses in their jurisdiction.

1.3 Storm water discharges not covered under this permit. The following storm water discharges are not provided coverage under this permit:

1.3.1 Storm water discharges from large construction activities with individual WYPDES permits that include storm water control requirements.

1.3.2 Storm water discharges from large construction activities covered under another industry‐ or geographically‐specific general WYPDES permit.

1.3.3 Storm water discharges that are commingled with wastewaters (including significant ground water).

1.3.4 The placement of fill into waters of the state requiring local, state or federal authorizations (such as a federal Section 404 permit from the US Army Corps of Engineers).

1.3.5 This permit does not substitute for obligations under the National Environmental Policy Act (NEPA), Endangered Species Act (ESA), Wild and Scenic Rivers Act, or National Historic Preservation Act (NHPA). It is your responsibility to ensure that the project and resulting discharges comply with the respective requirements of these statutes.

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1.3.6 Post‐construction discharges from industrial activity that originate from the site after construction activities have been completed at the site. Post‐construction industrial storm water discharges may need to be covered by a separate storm water permit.

1.3.7 Discharges to waters for which there is a total maximum daily load (TMDL) allocation for sediment, suspended solids or turbidity are not covered unless the applicant develops a SWPPP that is consistent with the assumptions, allocations and requirements in the approved TMDL. Information about TMDL allocations may be found at the following website:

http://deq.wyoming.gov/wqd/water‐quality‐assessment/.

1.3.8 Storm water discharges that the Department determines will cause, or have the reasonable potential to cause or contribute to, violations of water quality standards or impairments of water quality.

Part 2 Definitions

2.1 “Access Roads” means private roads which are exclusively or primarily dedicated for use by the permittee.

2.2 "Administrator" means the Administrator of the Water Quality Division, Wyoming Department of

Environmental Quality or his agent.

2.3 "Best Management Practices" ("BMPs") means schedules of activities, prohibitions of practices, maintenance procedures, and/or other management practices to prevent or reduce the pollution of waters of the state.

BMPs also include treatment requirements, operating procedures, and practices to control plant site runoff, spillage or leaks, sludge or waste disposal, or drainage from raw material storage.

2.4 “Common Plan of Development or Sale” means projects that may occur in multiple locations and/or in multiple phases, but are part of a single, overall plan. Documentation of common plans may include announcements or other documentation (including signs, public notices, hearings, marketing information, drawings, financing records, permit applications, zoning request, maps, etc.) or physical demarcations (including boundary signs, lot stakes, surveyor markings, etc.) indicating that construction activity will or may occur in the area.

2.5 "CWA" means Clean Water Act or the federal Water Pollution Control Act, 33 USC 1251, et. seq.

2.6 “Department” means the Wyoming Department of Environmental Quality

2.7 “Division” means the Water Quality Division, a part of the Department of Environmental Quality.

2.8 “Energy Dissipation” means methods employed at pipe and other water conveyance outlets to prevent erosion by dissipating or lowering the energy of the discharge. Examples include, but are not limited to, concrete aprons, riprap, splash pads, and gabions which are designed and installed to prevent erosion.

2.9 “Finally Stabilized” means that all soil disturbing activities at the site have been completed, and a uniform perennial vegetative cover with a density of 70% of the typical or native background vegetative cover for the area has been established on all disturbed unpaved areas and areas not covered by permanent structures.

Final stabilization using vegetation must be accomplished using plants or seed mixtures of forbs, grasses and/or woody vegetation that are adapted to the conditions of the site.

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2.10 "Large Construction Activity" means any clearing, grading, or excavation project which will disturb five or more (not necessarily contiguous) surface acres. Large construction activity also includes the disturbance of less than five acres of total land area when that disturbance is part of a larger common plan of development or sale if the larger common plan will ultimately disturb five acres or more. Construction activity does not include routine maintenance that is performed to maintain the original line and grade, hydraulic capacity or original purpose of a facility.

2.11 “Legally Responsible Person (LRP)” means a high‐ranking individual who is eligible under the requirements of

Part 11.7.1 to sign Notices of Intent (NOIs) and other documents required by the permit.

2.12 “Operator” is the company, individual or organization that has day‐to‐day supervision and control of activities occurring at the construction site and/or the ability to modify project plans and specifications related to the SWPPP. This can be the owner, developer, the general contractor, or in some cases, the agent of one of these parties. The operator is responsible for ensuring compliance with all conditions of the permit.

The operator shall be knowledgeable in all areas necessary to comply with this permit.

2.13 “Permittee” means the “operator” named in the Letter of Authorization (LOA) authorizing storm water discharges from the named construction activity. The permittee is responsible for all aspects of permit compliance.

2.14 “Reportable Quantity” means any spill or release of oil and hazardous substances which enters any water of the state, or releases that are determined to be a threat to enter waters of the state and are a) considered a “hazardous substance,” or b) any amount greater than either 10 barrels of any combination of crude oil/petroleum condensate/produced water or 25 gallons of refined crude oil products. Notice of spills meeting this definition should be made to the WDEQ at 307‐777‐7501. This number is available for reporting 24 hours a day. An online reporting form is also available at http://deq.wyoming.gov/admin/spills‐and‐ emergency‐response/. Refer to this website or Chapter 4 of the WWQRR for more information.

2.15 “Section 303(d) List or 303(d) List” means a list of Wyoming’s water quality‐limited surface waters requiring the development of Total Maximum Daily Loads (TMDLs) to comply with Section 303(d) of the federal Clean Water Act. A copy of the current Integrated 305(b) and 303(d) Report is available on the WQD website at http://deq.wyoming.gov/wqd/water‐quality‐assessment/. A link to a map of 303(d) listed waters, waters with approved TMDLs and class 1 waters is available on the WDEQ storm water webpage.

2.16 "Severe Property Damage" means substantial physical damage to property, damage to treatment facilities which causes them to become inoperable, or substantial and permanent loss of natural resources which can reasonably be expected to occur in the absence of a bypass. Severe property damage does not mean economic loss caused by delays in production.

2.17 “Spill Prevention Control and Countermeasure Plan (SPCC)” is a federal requirement (40CFR112) for facilities that store specific amounts of petroleum products. The plan is not a state requirement, but may be referenced as part of the SWPPP when appropriate.

2.18 "Storm Water" means storm water runoff, snow melt runoff, and surface runoff and drainage.

2.19 "Storm Water Associated with Large Construction Activity" means the discharge of storm water from construction activities, including clearing, grading, and excavating, that result in land disturbance of five or more acres of total land area. Large construction area also includes the disturbance of less than five acres of

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2.20 “Storm water Associated with Industrial Activity” means storm water discharges from any of the activities defined in Section 6 (g) (ii) of Chapter 2 of the Wyoming Water Quality Rules and Regulations.

2.21 “Surface Waters of the State” means all perennial, intermittent and ephemeral defined drainages, lakes, reservoirs, and wetlands which are not man‐made retention ponds used for the treatment of municipal, agricultural or industrial waste; and all other bodies of surface water, either public or private which are wholly or partially within the boundaries of the State.

2.22 “SWPPP” means Storm Water Pollution Prevention Plan.

2.23 “Temporary Stabilization” means the exposed ground surface has been covered with appropriate materials to provide temporary stabilization of the surface from water or wind erosion. Materials include, but are not limited to, mulch, riprap, erosion control mats or blankets and temporary cover crops. Surface roughening may also be considered a temporary stabilization method. Seeding alone is not considered stabilization.

Temporary stabilization is not a substitute for the more permanent “final stabilization.”

2.24 “Total Maximum Daily Load (TMDL)” means the maximum amount of a specific pollutant that can be assimilated by a surface water without causing an impairment of designated uses or violating water quality standards. The allowable amount takes into account all sources of that pollutant in a watershed, including point sources and non‐point sources, and requires a portion to be set aside as a margin of safety.

2.25 "Wyoming Surface Water Quality Standards" refers to Wyoming Water Quality Rules and Regulations, Chapter 1 (surface water standards).

2.26 “Wyoming Pollutant Discharge Elimination System (WYPDES)” means the state program for issuing, modifying and reissuing, terminating, monitoring and enforcing permits for discharging pollutants into surface waters of the state under the provisions of the Wyoming Water Quality Rules and Regulations, Chapter 2; W.S. 35‐11‐101 through 35‐11‐1803 and the federal Clean Water Act.

Part 3 Notice of Intent (NOI) – Obtaining an Authorization to Discharge

3.1 Who must apply. Operators of any large construction activity as defined in Part 2.10. Failure to obtain appropriate coverage may result in an enforcement action.

3.2 Deadline to apply. Except as authorized in Part 3.4 of this permit, an operator seeking authorization under this permit shall submit a complete Application Package to the Department at least 30 days prior to commencing construction activities. The NOI may be found on the program website at http://deq.wyoming.gov/wqd/storm‐water‐permitting/resources/construction‐general‐permits/ or by calling the Division at 307‐777‐7781. Contents of the “application package” will vary based on the reason for the submission. See below for more information.

3.3 Review of applications. As a result of application package review (NOI, SWPPP, permit fee submission), the

Division may:

3.3.1 Issue a Letter of Authorization (LOA) allowing discharge of regulated storm water from the covered facility in compliance with the terms and conditions of this permit.

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3.3.2 Request additional information necessary to evaluate the discharge

3.3.3 Require additional time for review

3.3.4 Notify the applicant if additional terms and conditions are necessary, or

3.3.5 Deny authorization under the general permit where a discharge is not eligible for coverage under this permit.

3.3.6 Issuance of an LOA for a construction activity does not imply that the WDEQ has “approved” the applicant’s SWPPP. It is the responsibility of the permittee to ensure the effectiveness of their SWPPP through the appropriate BMP selection, design, inspection, and maintenance.

3.3.7 NOIs that are incomplete will not be processed and will be returned. If an incomplete SWPPP is submitted, both the NOI and SWPPP will be returned and the NOI will not be processed.

3.4 Expedited processing. With just cause, and at the request of the operator, the Administrator may:

3.4.1 Allow the operator of a new large construction activity to submit a complete application package to the Administrator no later than 10 days prior to commencing construction activities; and

3.4.2 Notify the applicant of the approval or disapproval of coverage under this permit within 10 days of receipt of the NOI.

3.4.3 Expedited processing can normally be provided for complete and accurate application packages.

However, expedited processing is only available if there are sufficient Storm Water Program staff to accommodate the request.

3.4.4 A written request of expedited processing must accompany the NOI.

3.5 Form of NOI submission.

3.5.1 Currently, paper NOIs must be mailed or hand delivered to the WDEQ. NOIs must have an original signature to be valid.

3.5.2 Electronic submission may be made available during the term of this permit. Should electronic submission become available, requirements and details will be made available on the WDEQ website.

3.6 Field‐wide…