SWPPP WY NPS YELL 2019(1) Roosevelt Lodge Parking Lot Scan.pdf

Stormwater Pollution Prevention Plan

SWPPP

For:

ROOSEVELT LODGE PARKING LOT,

WY NPS YELL 2019{1)

Park, WY

Federal Highway Administration, Western Federal Lands Highway Division

Project Engineer: _________ _

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

T able o f C o n te n ts

Table of Contents

SvVPPP/ESCP TABS

TAB 1: SWPPP/ESCP Narrative

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

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

TAB 4: Delegation of Authority

TABS: Maps

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

TAB 7: Revegetation Plan (if applicable)

TAB 8: SWPPP Amendment Log

TAB 9: Inspection Reports

TAB 10: Corrective Action Log

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

TAB 12: Training/Certification Log

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

TAB 14: Grading and Stabilization Log

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

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

TAB 17: NPDES Quality Assurance Checklist

TAB 18: NPDES Notice of Termination (NOT)

Tab 1

CONTRACTOR:

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

Revise SWPPP narrative as needed throughout ~onstruction in accordance with contract 107.0lA(f)

ALASKA, IDAHO AND WASHINGTON PROJECTS ONLY:

SWPPP narrative must be signed by General Contractor's responsible corporate officer as defined in CGP 1.11.2.

File approved SWPPP narrative in Tab 1.

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 8.2 of the Wyoming Department of Environmental Quality WYPDES Storm Water Program Large 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/Site Name:

ROOSEVELT LODGE PARKING LOT/ WY NPS YELL 2019(1)

Proiect Location as either Quarter/Quarter. Section. Townshio. Range OR Street Address and Citv:

44°54'46.040"N 110°24'59.767"W

Permittee (Owner/Operator) Information:

Owner or Operator Name: Federal Highway Administration, Western Federal Lands Highway Division

Mailing Address: 610 E 5th St

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

Phone Number: (360) 619-7700

. I Permit Number: WYR10 -A00O

Part 8.2.1 SWPPP - Administrator:

Company or Organization:

Name:

Title:

Phone#:

Email:

Part 8.2.2 - Site Description:

8.2.2.1.

TBD - Construction Contractor

Brief description of nature of the construction activity:

An access improvement project in Yellowstone National Park at the historic Roosevelt Lodge. Work will consist of demolition of existing asphalt parking lot by pulverization, clearing and grubbing, re-paving roads, reconstruction of aggregate surface roads, improve flow of vehicle/pedestrian traffic and relocation of existing utility structures.

8.2.2.2 Proposed sequence of maior activities and an estimated date final stabilization is expected to be achieved.

9/11/20 Demolition 9/22/20 Earthwork 9/24/20 Construction Begins 10/31/20 Final stabilization for over-winter

8.2.2.3 Estimate of total area of the site: 3 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. 2.9 acres

8.2.2.4 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.

There are no potential sources that will add significant amounts of pollutants to storm water discharges. Potential pollutant sources may consist of crushing, screening, washing and stockpiling aggregate. This project requires no borrow and does not need an off-site staging yard, material storage area or access road.

Possible pollutants are petroleum products used in the cement, water, and refueling of equipment used during the rock crushing processes. It is not expected that there will be sufficient amounts of these quantities to cause c::innifir,~nt nnll11tinn ~iltc:: nAni=>rntArl will hA tAmnnrnn, ~nrl fihAr mile:: will hA m~int~inArl tn r,nnt~in c::iltc:: D

8.2.2.5 Brief description of existing vegetation at the site and an estimate of the percent of vegetative ground cover.

(Pre-disturbance ohotos are heloful.l:

The majority of the project site is an existing asphalt lot and road that will be paved. There is 0% veg cover in these areas. The main asphalt lot in front of Roosevelt Lodge will be obliterated & vegetated. A replacement parking area is proposed further from the Lodge to re-establish historic character. In this proposed parking area the vegetation is

: :c~~~ !, s~ru~--~~~ ?fL~~~.7:_es_ ~n~;_:~~~~;~ w~th_~~~.~o~i~~t~~~-9~:°-L~o-~er. This area will not be re-vegetated, bu6

8.2.2.6 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:

Vehicles will continue to park in this area. Any pollutants from vehicles would collect in the drainage and discharge to upland via overland flow. There is over 1,000 feet of overland flow from the parking areas.

8.2.2.7a 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:

There are no water bodies within 1,000 feet of the project. Storm water from this project area would travel North to the Grand Loop Road ditch. Eventually this ditch flows toward the Lost Creek drainage.

8.2.2.7b 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:

Not Applicable

8.2.2.8 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 web page at http://deq.wyoming.gov/wqd/tmdl/resou rces/completed-projects/ Name of impaired water body:

Lost Creek (WYLS140500030109_03) is a Class 2 water, no TMDL has been completed.

Part 8.2.3 -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:

8.2.3.1 Construction site boundaries.

8.2.3.2 All areas of soil disturbance and areas that are to remain undisturbed.

8.2.3.3 The location of surface waters of the state as defined in Part 2.19 of the Large

Construction General Permit (LCGP).

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

8.2.3.5 Locations of all existing or planned temporary or permanent erosion and sedimentation controls.

8.2.3.6

8.2.3.7

8.2.3.8

8.2.3.9

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

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

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.

Storm water discharge locations. Include discharge locations for offsite operations covered under this permit. 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.

8.2.3.10 Also note all locations where storm water will run on to the construction site from areas outside the site boundaries.

8.2.3.11 North Arrow. Include a legend where needed for clarity.

Part 8.2.4 - Best Management Practices (BMPs) Please note: Storm water structural best management practices are expected ta withstand and function properly during precipitation events up to a 2-year, 24-hour storm event. Visible and measurable erosion (see Part 7.4 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.

8.2.4.1 Erosion and sediment controls.

8.2.4.la

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:

Preserving existing vegetation and utilizing erosion control devices such as temporary seeding and mulches until permanent stabilization has been achieved.

8.2.4.lb 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, 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:

Straw or equivalent rolled sediment control product will be placed around disturbed areas during active construction.

If used periodic inspections in accordance with the SCGP will be done to ensure there is no over-topping, rilling or other erosive conditions.

Straw Mulch and/or shredded woody material will be used during active construction if needed. It will be implemented to maintain thickness of cover. Any area showing signs of erosion shall be re-mulched and/or protected by a blanket or net.

8.2.4.lc Stabilization Measures. Describe temporary and permanent stabilization measures such as the BMPs listed in the previous Erosion Prevention BMPs and Sediment Control sections for exposed soil areas where activities have permanently or temporarily ceased. Refer to Part 7.15 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 Temoorarv stabilization narrative:

Temporary seeding will be distributed over layer of soft vegetative topsoil after parking lot is removed. Seed will be planted as soon as practicable. Other BMP's (mulch, blankets, etc.) will be placed to maintain stabilization.

Dust control will be in the form of irrigation/watering during active construction as needed. In periods of hot or dry weather, several applications a day may be required.

8.2.4.2 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 .14 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:

Not applicable.

8.2.4.3 Operational Controls.

8.2.4.3a

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:

Equipment/vehicle are required to be washed before entering the Park. Non-stormwater will be controlled to keep it out of the work zone. The locations of equipment/vehicles, toilet and construction materials will be in the designated staging area only. Project does not involve chemicals or fertilizers. Specifications require Contractor to securely contain litter as part of bear protection.

8.2.4.3b

Bulk Storage of Petroleum Products. Describe in detail the specific practices for bulk storage of petroleum products at the site. (See Part 8.2.4.3.b of the LCGP for more information). An SPCC plan may also be referenced.

Bulk Storage of Petroleum Products narrative:

On-site fueling areas will have a spill kit present, visible, and maintained. Employees and subcontractors will receive training regarding equipment/vehicle fueling and maintenance practices, including proper fueling procedures, proper use of pumps, emergency shutoff valves (training efforts documented in TAB 12). On-site vehicles and equipment will be inspected daily for leaks, equipment damage, and other service problems. Designate vehicle/equipment service will be marked and the areas will be located away from drainage facilities and watercourses to prevent storm-water run-on and runoff. Designated washout areas will be shown on the SWPPP plan sheets (TAB 6). Drip pans, drip cloths, or absorbent pads will be used when replacing spent fluids. All spent fluids will be collected and store in appropriate labeled containers in the proper storage areas.

8.2.4.3c 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 washout areas on-site, designate specific washout areas, and design facilities to handle anticipated washout water will be installed. Washout areas will be located at least 50 yards away from storm drains and watercourses. If this is not possible, prefabricated washout containers will be used. Alternatively, constructed washout areas may be used either by digging a pit and lining it with 10 mil plastic sheeting or creating an aboveground structure from straw bales or sandbags with a plastic liner. Designated washout areas will be shown on the SWPP plan sheets (TAB 6).

8.2.4.3e

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.

Emolovee Training narrative:

Prior to earth-disturbing activities or pollutant-generating activities, the following construction personnel will receive training to understand the requirements of the State NPDES stormwater permit and their specific responsibilities such as, 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. The General Contractor will provide an Erosion Control Supervisor (ECS) for the project who meets the applicable Erosion Control Supervisor certification in accordance with contract 157.03.

8.2.5 Maintenance

Maintenance Schedule. Describe the schedule, intervals, or 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 9.7.

Maintenance Schedule narrative:

To be completed by Contractor.

8.2.6 Inspections

Inspection Schedule. Describe in detail an inspection program and schedule that meets the requirements of Part 9 of the LCGP.

Inspection Schedule narrative:

Inspections will be conducted at least once every 14 calendar days and within 24 hours of the end of a storm event of 0.5 inches or greater, as determined by an on-site rain gauge. (SCGP - Section 9.2.1)

8.2.7 Certification

Authorized signatories for this SWPPP are the following:

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 partfler.

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.

Scott Smithline Environmental Manager

Printed Name of Person Signing ntle

2/20/20 360-619-7785

Date Telephone

Reset form c:\bsahl\stor~_water\construction\cgp_2016\swppp_template_2016_rev.doc

Mtt Mead, Governor

Department of Environmental Quality To protect, conserve, and enhance the Quality of Wyoming's environment for the benefit of current and future generations

General Permit to Discharge Storm Water Associated with Small Construction Activity Under the

Wyoming Pollutant Discharge Elimination System (WYPDES)

Todd Parfitt, Director

In compliance with the provisions of Chapter 2 of the Wyoming Water Quality Rules and Regulations, the federal Water Pollution Control Act and the Wyoming Environmental Quality Act, facilities located within the State of Wyoming (except areas within the Wind River Indian Reservation where the state does not have jurisdiction) which are or may discharge storm water associated with small construction activities, are hereby authorized to discharge to surface waters of the State of Wyoming upon compliance with the requirements of this permit.

This general WYPDES permit WYR 10-AOOO is issued under the provisions of Wyoming Water Quality Rules and Regulations Chapter 2.

This permit shall become effective when signed by the Administrator and Director and shall expire on March 15, 2016.

Kevin Frederick Todd Parfitt Administrator - Water Quality Division Director - Department of Environmental Quality

Herschler Building -122 West 25th Street - Cheyenne, WY 82002 - http://deq.state.wy.us

IDMIN/OUTREACH

(307) 777-7758

FAX 777-3610

ABANDONED MINES

(307) 777-6145

FAX7776462

AIRQUAUTY

(307) 777-7391

FAX 777-6937

INDUSTRIAL SITING

(307) 777-7369

FAX 777-6937

LAND QUALITY

(307) 777-7756

FAX 777-5864

SOLID & HAZ WASTE

(307) 777-7752

FAX 777-5973

WATER QUALITY

(307) 777-7781

FAX 777-5973

This page is intentionally left blank.

TABLE OF CONTENTS

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 Obtaining Authorization to Discharge - Notice of Intent (NOi)

3.1 Permit authorization

3.2 Qualifying local programs (QLPs)

3.3 Agreement to comply

3.4 Individual permit required

3.5 Temporary coverage .................................•

3.6 Continuation of coverage under a renewed permit

Part 4 Waiver from Permit Coverage

4.1 Waiver applicability and coverage ................................................................. .-

4.2 Activities extending beyond the waiver period

Part 5 Transfer of Permit Coverage for an Entire Project or a Portion of a Project

Part 6 Termination of Permit Coverage·

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 Visible or measurable erosion

7.5 Recovery of offsite sediment

7 .6 Inlet protection

7. 7 Off-site tracking of sediment 7 .8 Use of sediment ponds or basins

7.9 Design of sediment ponds

7 .10 Design of sediment basins 7 .11 Discharge from ponds or basins

7.12 Maintenance of ponds or basins

7 .13 Construction site dewatering

7.14 Soil stabilization

7 .15 Pollution prevention measures

7.16 Minimum storm size for BMPs

7 .17 Allowable discharges 7 .18 Prohibited discharges

7.19 Sanitary facilities

7.20 Requirements of other agencies ............................................... ' lV

Part 8 Storm Water Pollution Prevention Plan

8.1 General requirements

8.1.1 Scope of SWPPP

8.1.2 Joint SWPPPs

8.1.3 Pollutant source identification

8.1.4 Plan implementation

8.1.5 Plan amendment. ..........................................•

8.1.6 Plan retention

8.1. 7 Plan Availability

8.1.8 Guidance

8.2 Content

8.2.1 SWPPP administrator

8.2.2 Site description - narrative

8.2.3 Site maps

8.2.4 Best management practices (BMPs)

8.2.5 Maintenance

8.2.6 Inspections

8.2.7 Signature

Part 9 Self Monitoring and Inspection Requirements

9.1 Site inspections

9.2 Inspection schedules

9.3 Scope of inspections .................................................................. _ .............. ·

9.4 Qualified person ................................................................................................. 2.1

9.5 Records

9.6 Sever weather exception

9.7 Winter conditions

9.8 Retention of reports

9.9 Collection and submission of self-monitoring information

Part 10 Standard Permit Conditions

10.1 Duty to comply

10.2 Penalties for violations of permit conditions

10.3 Need to halt or reduce activity not a defense

10.4 Duty to mitigate

10.5 Duty to provide information

10.6 Other information

10.7 Signatory requirements ..................................................... ;

10.8 Penalties for falsification of reports and monitoring systems

10.9 Oil and hazardous substance liability

10.10 Property rights

10.11 Severability

10.12 Transfers

10.13 State laws

10.14 Facilities operation and maintenance

10.15 Monitoring and records .......................................................... ,

10.16 Availability of reports

10.17 Adverse impact. ........... ··························································:···························· 25

10.18 Bypass or upset of treatment facilities

V

10.19 Upset conditions

10.20 Inspection and entry···················································•·.·······················

10.21 Permit actions

10.22 Reopener clause

10.23 Civil and criminal liability

Appendix A Appendix B Appendix C

Class 1 Waters Acronyms Used in this Document Pollution Control Guidelines ................................................................ ~ .. 33 vi ihis page is intentionally left blank.

vii

Small Construction General Permit

WYR10-A000

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 small 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 small 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 .13 are followed and necessary BMPs are installed and effective. ·

1.2.4 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 small construction activities with individual WYPDES permits that include storm water control requirements.

1.3.2 Storm water discharges from small 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 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.

Page -1

WYR10-AOOO

1.3.6 Discharges to waters for which there is a total maximum daily load (TMDL) allocatio 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.state.wy.us/wqd/watershed/index.asp.

1.3.7 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 "Department" means the Department of Environmental Quality

2.6 "Energy Dissipation" means methods employed at pipe 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. 7 "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% ofthe 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.

2.8 "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

Page - 2 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.

2.9 "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," orb) 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 307-777-7781. This number is available for reporting 24 hours a day.

An online reporting form is also available at http://deq.state.wy.us/out/spills.htm. Refer to this website or Chapter 4 of the WWQRR for more information.

2.10 "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://deg.state.wy.us/wqd/watershed/index.asp.

2.11 "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.

2.12 "Small Construction Activity" means any clearing, grading, or excavation project which will disturb at least one acre and less than five (not necessarily contiguous) surface acres.

Small construction activity also includes the disturbance of less than one acre 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 at least one but less than five acres. 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.

2.13 "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.

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

2.15 "Storm Water Associated with Small Construction Activity" means the discharge of storm water from construction activities, including clearing, grading, and excavating, that result in land disturbance at least one acre and less than five acres of total land area. Small construction area also .includes the disturbance of less than one acre of total land area that is a part of a larger common plan of development or sale if the larger plan will ultimately disturb at least one but less than five acres.

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2.16 "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.

2.17 "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.

2.18 "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."

2.19 "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.

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

2.21 "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 Obtaining Authorization to Discharge

Authorization to discharge storm water under this permit is achieved by completing the requirements of Part 3.1 or 3.2.

3.1 Permit authorization. Storm water discharges from small construction activities are authorized under this permit provided the operator:

3.1.1 Develops a SWPPP describing the measures to be implemented at the construction site that will eliminate or minimize pollutants from the project. The SWPPP requirements are explained in detail in Part 8 of this permit. The SWPPP must be developed and implemented, as applicable, prior to initiating land disturbing activities.

3.1.2 Conducts and documents self monitoring and inspections as described in Part 9 of this permit.

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3.1.3 The operator fulfills all applicable requirements of this permit.

3.2 Qualifying local programs (QLPs)

3.2.1 If a small construction activity is within the jurisdiction of a qualifying local program (QLP), as described in Parts 3.2.2 and 3.2.3, and is in compliance with the requirements of that program, then storm water discharges from that activity are also considered to be in compliance with this permit.

3.2.2 A Qualifying Local Program (QLP) is a municipal erosion and sediment control program addressing storm water discharges associated with small construction activities that has been approved by the Department. The Department will maintain a list of approved QLPs in Wyoming.

3.2.3 A QLP must:

3.2.3.1

3.2.3.2

3.2.3.3

3.2.3.4

Require construction site operators to implement appropriate erosion and sediment control best management practices;

Require construction site operators to control waste such as discarded building materials, concrete truck wash out, chemicals, litter, and sanitary waste at the construction site that may cause adverse impacts to water quality;

Require construction site operators to develop and-implement a· SWPPP. Those best management practices (BMPs) or other control measures specified in the SWPPP shall ensure that storm water discharges do not cause a violation of Wyoming Water Quality Standards. A SWPPP includes site descriptions, descriptions of appropriate control measures, copies of approved local requirements, maintenance procedures, inspection procedures, and identification of non-storm water discharges; and Implement a procedure to review site plans that incorporates consideration of potential water quality impacts.

3.3 Agreement to comply. Operating under the Small Construction General Permit (SCGP) constitutes full agreement by the operator to meet and comply with all requirements of this general permit.

3.4 Individual permit required. If, after evaluation of the small construction activity and any additional information requested for the evaluation, it is found that this general permit is not applicable to the operation, the applicant shall submit an application for an individual permit.

The applicant will be notified of the Administrator's. decision to deny authorization under the general permit and require coverage under an individual permit. Additional information may be required and a minimum of 120 days will be required to process the individual application and issue the permit.

3.5 Temporary coverage. The Administrator reserves the right to issue temporary coverage under this general permit to cover storm water discharges from projects required to obtain coverage under an individual permit.

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3.6 Continuation of coverage under a renewed permit.

3.6.1 Storm water discharges associated with small construction activity that were coverer· under the previous permit (issued March 1, 2008) are automatically covered under this permit when it becomes effective.

3.6.2 In order to maintain coverage beyond December 31, 2013, permittees must update their SWPPP to meet the requirements of Part 8 by January 1, 2014. Operators who fail to do so will no longer be in compliance with this permit.

Part 4 Waiver from Permit Coverage

The Administrator waives the requirement to obtain authorization under this permit for storm water discharges associated with small construction activities provided the terms and conditions of this section are met.

4.1 Waiver applicability and coverage. Operators of small construction activities qualify for a waiver from the requirements of this permit provided:

4.1.1 Calculation. The calculated rainfall erosivity "R factor" for the entire period of the construction project, from the initial land disturbance to "final stabilization" is less than

5. The project "R factor" must be determined by:

4.1.1.1

4.1.1.2

Using the simplified method for determining the "R factor" as provided in Part A of the waiver application. Part A was developed using the most conservative assumptions for each county. Or;

Alternatively, the project operator may calculate a site specific "R factor" using the U.S. Environmental Protection Agency guidance.

document, Fact Sheet 3.1: Storm Water Phase II Final Rule;.

Construction Rainfall Erosivity Waiver (document EPA 833-F-00-014).

A link to this document is provided on the Department's web page at http://deq.state.wy.us/wqd/WYPDES Permitting/WYPDES StormWater/stormwater.asp. Paper copies may be obtained by contacting the Storm Water Program at (307) 777-7781. This may be a useful option for longer duration projects located in areas of a county that have lower isoerodent values than the conservative values used to develop Part A.

4.1.2 Certification of Waiver

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4.1.2.1 Operators using 'the simplified method of Part A must complete the waiver certification section of Part A. The certification must be signed in accordance with Part 10.7 and it must be submitted to the Administrator 30 days prior to commencing land disturbing activities. A site map must be submitted along with the waiver certification.

4.1.2.2 Operators using the alternative calculation specified in Part 4.1.1.2 must complete the waiver certification found in Part B. The certification must be signed in accordance with Part 10.7 and it must be submitted to the Administrator 30 days prior to commencing land disturbing activities. A site map must be submitted along with the waiver certification. ·

4.2 · Activities extending beyond the waiver period. If a construction activity extends beyond the certified waiver period for any reason, the operator must either:

4.2.1 Recalculate the rainfall erosivity "R factor" using the original start date and a new projected end date and, if the "R factor" is still under 5, complete and sign a new waiver certification before the end of the original waiver period. The new certification must be submitted to the Administrator 14 days before the end of the current certification; or

4.2.2 Complete and implement the requirements for obtaining authorization under this permit as specified in Part 3 before the end of the certified waiver period.

Part 5 Transfer of Permit Coverage for an Entire Project or a Portion of a Project.

5.1 When operational control over an entire project or a portion of a project (e.g., the sale of certain lots within a residential or industrial development to other parties) changes to another operator, the current permittee must transfer permit coverage for those areas to the new operator.

5.2 The permittee relinquishing coverage shall provide the new permittee with copies of the site SWPPP and inspection and maintenance records that are kept in accordance with Part 9.5.

For inspection and maintenance records, only the most recent twelve months' records need be provided to the new permittee.

5.3 Updates to the facility SWPPP

5.3.1 The new operator may develop and implement a new SWPPP for their portion of the project that meets all the terms and conditions of this permit, or

5.3.2 The new operator may adopt and continue to implement the original SWPPP provided it is adequate and relevant for the new activities that will occur onsite.

5.3.3 With either option, the permittee shall ensure, either directly or through coordination with other operators that their SWPPP meets all terms and conditions of this permit and their activities do not interfere with another operator's erosion and sediment control practices.

5.3.4 Changes related to the transfer must be made to the SWPPP within 30 days of transfer of operational control. These changes include, at a minimum, changes in personnel responsible for implementing the SWPPP.

5.3.5 The new operator must comply with all conditions in this permit and with all provisions of the existing SWPPP until such time as the existing SWPPP is amended or replaced by a new SWPPP.

Part 6 Termination of Permit Coverage

The terms and conditions of this permit must be implemented until one of the following conditions is met:

6.1 Final stabilization ( see Part 2. 7 for definition) has been achieved on all parts of the site for which the permittee is responsible and all temporary synthetic and structural erosion and sediment controls (e.g., silt fence, temporary rock check dams) have been removed; or.

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6.2 For individual lots in residential construction only:

Small Constructior:i General Permit

WYR10-AOOO

6.2.1 Final stabilization has been achieved as defined in Part 2.7 or;

6.2.2 Temporary ero"sion protection and down gradient perimeter control for individual lots has been completed and the residence has been transferred to the owner who will live in the house. Additionally, the permittee shall provide a copy of a "homeowner fact sheet" to the homeowner to inform the owner of the need for, and the benefits of, erosion and sediment control and final stabilization.

6.3 Final stabilization for producing oil and gas facilities does not require revegetation in the area within permanently installed well anchor points, the travel surface of a site access road, and areas within established fire walls surrounding tank batteries. All other areas must be revegetated or covered by permanent materials (paving, gravel, etc.) to be considered finally stabilized. Surfaces left unpaved must be designed and prepared in a manner that will prevent ongoing erosion problems. The permittee may be required to re-extend coverage under this permit to areas with erosion problems.

Part 7 Effluent Limits

7 .1 Quality of discharge. Storm water discharges associated with construction activities shall not cause pollution, contamination or degradation to waters of the state.

7.1.1 Those best management practices (BMPs) or other control measures specified in the

SWPPP shall ensure that the storm water discharges do not cause a violation of Wyoming Water Quality Standards.

7 .1.2 The quality of permitted storm water discharges shall reflect the best which is attainable through the proper implementation of all items in the facility SWPPP.

7.2 Best management practice selection, installation and maintenance. All BMPs must be properly selected, installed and maintained in accordance with the manufacturer's specifications and good engineering, hydrologic and pollution control practices. (It is not required that the SWPPP be prepared or certified by a registered engineer.) If periodic inspections or other information indicates a practice has been used inappropriately or incorrectly the permittee must modify or replace the control.

7.3 Erosion and sediment controls. Design, install and maintain effective erosion controls and sediment controls to minimize the discharge of pollutants. At a minimum, such controls must be designed, installed and maintained to:

7.3.1 Control storm water volume and velocity within the site to minimize soil erosion;

7 .3.2 Control storm water discharges, including both peak flow rates and total storm water volume, to minimize erosion at outlets and to minimize downstream channel and stream bank erosion;

7.3.3 Minimize the amount of soil exposed during construction activity;

7 .3.4 Minimize the disturbance of steep slopes;

7.3.5 Minimize sediment discharges from the site. The design, installation and maintenance of erosion and sediment controls must address factors such as the amount, frequency, intensity and duration of precipitation, the nature of resulting storm water runoff, and soil characteristics, including the range of soil particle sizes expected to be present on the site;

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7.3.6 Provide and maintain natural buffers around surface waters, direct storm water to vegetated areas to increase sediment removal and maximize storm water infiltration, unless infeasible; and

7.3.7 Minimize soil compaction and, unless infeasible, preserve topsoil.

7.4 Visible or measurable erosion. Visible or measurable erosion, associated with a construction activity, which leaves the construction site as a result of inadequate or ineffective SWPPP design or maintenance of BMPs is prohibited. Visible or measurable erosion is defined as:

7.4.1 Deposits of mud, dirt, sediment, or similar material exceeding one cubic foot volume in any area of 100 square feet or less on public or private roads, adjacent property, or into waters of the state by deliberate actions or as a result of water or wind erosion;

or

7.4.2 Evidence of concentrated flows of water over bare soils (such as rills or gullies), turbid or sediment-laden flows, or evidence of on-site erosion on bare slopes, where runoff of water is not filtered, treated, or captured on the site using BMPs specified in the SWPPP; or

7.4.3 Earth slides, mud flows, earth sloughing, or other earth movement which leaves the construction site.

7.5 Recovery of offsite sediment. Off-site accumulations of sediment (except tracking onto paved roads) must be removed in a manner and at a frequency sufficient to minimize off site impacts. See Pqrt 7. 7 for addressing offsite tracking onto paved roads.

7 .5.1 Where a determination is made that sediment must be removed to prevent deposition within surface waters (or conduits to surface waters, such as storm drain systems), then it…