Attachment_4_-_Stormwater_Pollution_Prevention_Plan_Template.pdf

Stormwater Pollution Prevention Plan (SWPPP)

Restore Level 33 04/20/22

EPA SWPPP Template, Version 1.1, September 17, 2007 i

Appendix A: SWPPP Template – Authorized States

Instructions

To help you develop the narrative section of your construction site SWPPP, the U.S

Environmental Protection Agency (EPA) has created this electronic SWPPP template. The template is designed to help guide you through the SWPPP development process and help ensure that your SWPPP addresses all the necessary elements stated in your construction general permit.

You should use this template with EPA’s guidance on Developing Your Stormwater Pollution

Prevention Plan. Both are available on EPA’s website at www.epa.gov/npdes/swpppguide

This template covers the SWPPP elements that most state construction general permits require, however, you are strongly encouraged to customize this template. There are two major reasons to customize this template:

• To reflect the terms and conditions of your construction general permit; and

• To reflect the conditions at your site

Some states might have their own SWPPP template. If so, use the state-suggested format. In such cases, this document and its template might provide useful background information.

Using the SWPPP Template

Each section of this template includes “instructions” and space for project information. You should read the instructions for each section before you complete that section. This template was developed in Word so that you can easily add tables and additional text. Some sections may require only a brief description while others may require several pages of explanation.

Tips for completing the SWPPP template

• If there is more than one construction operator for your project, consider coordinating development of your SWPPP with the other operators.

• Multiple operators may share the same SWPPP, but make sure that responsibilities are clearly described.

• Modify this SWPPP template so that it addresses the requirements in your construction general permit and meets the needs of your project. Consider adding permit citations in the SWPPP when you address a specific permit requirement.

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Stormwater Pollution Prevention Plan for:

Restore Level 33

Near intersection of Harpers Ferry Rd and Hoffmaster Rd

Knoxville, MD 21758

Operator(s):

National Park Service, National Capital Area

David Walker, PE

1100 Ohio Drive, SW

Washington, DC 20242

(202) 619-7064 david_walker@nps.gov

SWPPP Contact(s): - TBD

Insert Company or Organization Name

Insert Name

Insert Address

Insert City, State, Zip Code

Insert Telephone Number

Insert Fax/Email

SWPPP Preparation Date:

04 / 20 / 2022

Estimated Project Dates:

Project Start Date: TBD

Project Completion Date: TBD iii

Contents

SECTION 1: SITE EVALUATION, ASSESSMENT, AND PLANNING

1.1 Project/Site Information

1.2 Contact Information/Responsible Parties

1.3 Nature and Sequence of Construction Activity

1.4 Soils, Slopes, Vegetation, and Current Drainage Patterns

1.5 Construction Site Estimates

1.6 Receiving Waters

1.7 Site Features and Sensitive Areas to be Protected

1.8 Potential Sources of Pollution

1.9 Endangered Species Certification

1.10 Historic Preservation

1.11 Applicable Federal, Tribal, State or Local Programs

1.12 Maps

SECTION 2: EROSION AND SEDIMENT CONTROL BMPS

2.1 Minimize Disturbed Area and Protect Natural Features and Soil

2.2 Phase Construction Activity

2.3 Control Stormwater Flowing onto and through the Project

2.4 Stabilize Soils

2.5 Protect Slopes

2.6 Protect Storm Drain Inlets

2.7 Establish Perimeter Controls and Sediment Barriers

2.8 Retain Sediment On-Site

2.9 Establish Stabilized Construction Exits

2.10 Additional BMPs

SECTION 3: GOOD HOUSEKEEPING BMPS

3.1 Material Handling and Waste Management

3.2 Establish Proper Building Material Staging Areas

3.3 Designate Washout Areas

3.4 Establish Proper Equipment/Vehicle Fueling and Maintenance Practices

3.5 Control Equipment/Vehicle Washing

3.6 Spill Prevention and Control Plan

3.7 Any Additional BMPs

3.8 Allowable Non-Stormwater Discharge Management

SECTION 4: SELECTING POST-CONSTRUCTION BMPs

SECTION 5: INSPECTIONS

5.1 Inspections

5.2 Delegation of Authority

5.3 Corrective Action Log

SECTION 6: RECORDKEEPING AND TRAINING

6.1 Recordkeeping

6.2 Log of Changes to the SWPPP

6.3 Training

SECTION 7: FINAL STABILIZATION

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SECTION 8: CERTIFICATION AND NOTIFICATION

SWPPP APPENDICES

Appendix A – General Location Map Appendix B – Site Maps Appendix C – Construction General Permit Appendix D – NOI and Acknowledgement Letter from EPA/State Appendix E – Inspection Reports Appendix F – Corrective Action Log (or in Part 5.3) Appendix G – SWPPP Amendment Log (or in Part 6.2) Appendix H – Subcontractor Certifications/Agreements Appendix I – Grading and Stabilization Activities Log (or in Part 6.1) Appendix J – Training Log Appendix K – Delegation of Authority Appendix L – 80% DD Submission Planset

SECTION 1: SITE EVALUATION, ASSESSMENT, AND PLANNING

1.1 Project/Site Information

Project/Site Name: Restore Level 33 Revetment Wall

Project Street/Location: Along C&O Canal towpath at mile marker 61.35 near intersection of

Harpers Ferry Rd & Hoffmaster Rd NW____________________________________________

City: Knoxville, MD State: ZIP Code: 21758

County or Similar Subdivision:

Latitude/Longitude (Use one of three possible formats, and specify method)

Latitude: Longitude:

1. _ _ º _ _ ' _ _'' N (degrees, minutes, seconds) 1. _ _ º _ _ ' _ _'' W (degrees, minutes, seconds)

2. _ _ º _ _ . _ _' N (degrees, minutes, decimal) 2. _ _ º _ _ . _ _' W (degrees, minutes, decimal)

3. 39. 3314 º N (decimal) 3. -77.7356º W (decimal)

Method for determining latitude/longitude:

USGS topographic map (specify scale: ) EPA Web site GPS

Other (please specify): Google Maps

Is the project located in Indian country? Yes No

If yes, name of Reservation, or if not part of a Reservation, indicate "not applicable."- N/A

Is this project considered a federal facility? Yes No

NPDES project or permit tracking number*: TBD

*(This is the unique identifying number assigned to your project by your permitting authority after you have applied for coverage under the appropriate National Pollutant Discharge Elimination System (NPDES) construction general permit.)

Instructions:

― In this section, you can gather some basic site information that will be helpful to you later when you file for permit coverage.

― For more information, see Developing Your Stormwater Pollution Prevention Plan: A SWPPP Guide for Construction Sites (also known as the SWPPP Guide), Chapter 2

― Detailed information on determining your site’s latitude and longitude can be found at www.epa.gov/npdes/stormwater/latlong

1.2 Contact Information/Responsible Parties

Operator(s):

National Park Service, National Capital Area

David Walker, PE

1100 Ohio Drive, SW

Washington, DC 20242

(202) 619-7064 david_walker@nps.gov

Project Manager(s) or Site Supervisor(s):

C&O National Historic Park

Joe Reed, PE, CFM

1850 Dual Hwy Ste 100

Hagerstown, MD 21740

(240) 291-6612 joseph_reed@nps.gov

SWPPP Contact(s): TBD

Insert Company or Organization Name:

Insert Name:

Insert Address:

Insert City, State, Zip Code:

Insert Telephone Number:

Insert Fax/Email:

Insert area of control (if more than one operator at site) :

Repeat as necessary

― List the operator(s), project managers, stormwater contact(s), and person or organization that prepared the SWPPP. Indicate respective responsibilities, where appropriate.

― Also, list subcontractors expected to work on-site. Notify subcontractors of stormwater requirements applicable to their work.

― See SWPPP Guide, Chapter 2.B.

This SWPPP was Prepared by:

VHB

Tim Smith

1775 Greensboro Station Pl STE 200

McLean, VA 22102

(571) 389-8170

TimothySmith@VHB.com

Subcontractor(s):

TBD

Emergency 24-Hour Contact:

Joe Reed, PE, CFM

(240) 291-6612

1.3 Nature and Sequence of Construction Activity

Describe the general scope of the work for the project, major phases of construction, etc:

The work includes locating all existing dimensions of Level 33, determining its condition, and developing plans to restore and improve the canal wall structure and the Harpers Ferry Rd condition. It is the intention to restore and reinforce the Level 33 wall to, in turn restore the portion of Harpers Ferry Road in this section.

What is the function of the construction activity?

Residential Commercial Industrial Road Construction Linear

Utility

Other (please specify): Federal

Estimated Project Start Date: TBD

Estimated Project Completion Date: TBD

Instructions:

― Briefly describe the nature of the construction activity and approximate time frames (one or more paragraphs, depending on the nature and complexity of the project).

― For more information, see SWPPP Guide, Chapter 3.A.

1.4 Soils, Slopes, Vegetation, and Current Drainage Patterns

Soil type(s): Bp, Bigpool silt loam- moderately well drained soil type, permeability is moderately slow to slow, slopes range from 0-8 percent.

Slopes (describe current slopes and note any changes due to grading or fill activities): Slopes are nearly level (0-3%) with the retaining wall separating Harpers Ferry Rd from the vegetation surrounding the C&O Towpath.

Drainage Patterns (describe current drainage patterns and note any changes dues to grading or fill activities): Stormwater runoff from Harpers Ferry Rd drains over canal wall into canal prism.

Vegetation: Sparce vegetation is scattered within the wall. The area surrounding the C&O

Towpath contains grass, brush, and limited trees. Vegetation surrounding the wall (20’ from the east to the west of the wall) is to be removed prior to construction.

― Describe the existing soil conditions at the construction site including soil types, slopes and slope lengths, drainage patterns, and other topographic features that might affect erosion and sediment control.

― Also, note any historic site contamination evident from existing site features and known past usage of the site.

― This information should also be included on your site maps (See SWPPP Guide, Chapter 3.C.).

1.5 Construction Site Estimates

The following are estimates of the construction site.

Total project area: 1.126 acres

Construction site area to be disturbed : 0.308 acres

Percentage impervious area before construction: 14 %

Runoff coefficient before construction: 0.74

Percentage impervious area after construction: 14 %

Runoff coefficient after construction 0.74

― Estimate the area to be disturbed by excavation, grading, or other construction activities, including dedicated off-site borrow and fill areas.

― Calculate the percentage of impervious surface area before and after construction

― Calculate the runoff coefficients before and after construction.

― For more information, see SWPPP Guide, Chapter 3.A and Appendix C.

1.6 Receiving Waters

Description of receiving waters: The water from Harpers Ferry Road flows over the retaining wall which ultimately discharges into the vegetative area between the level wall and the C&O

Towpath. This area serves as a detention region when necessary.

Description of storm sewer systems: N/A

Description of impaired waters or waters subject to TMDLs: N/A

Other: The Potomac River is west of the C&O Towpath.

― List the waterbody(s) that would receive stormwater from your site, including streams, rivers, lakes, coastal waters, and wetlands. Describe each as clearly as possible, such as Mill Creek, a tributary to the Potomac River, and so on.

― Indicate the location of all waters, including wetlands, on the site map.

― Note any stream crossings, if applicable.

― List the storm sewer system or drainage system that stormwater from your site could discharge to and the waterbody(s) that it ultimately discharges to.

― If any of the waterbodies above are impaired and/or subject to Total Maximum Daily Loads (TMDLs), please list the pollutants causing the impairment and any specific requirements in the TMDL(s) that are applicable to construction sites. Your SWPPP should specifically include measures to prevent the discharge of these pollutants.

― For more information, see SWPPP Guide, Chapter 3.A and 3.B.

― Also, for more information and a list of TMDL contacts and links by state, visit www.epa.gov/npdes/stormwater/tmdl.

1.7 Site Features and Sensitive Areas to be Protected

Unique features: historic C&O Canal and canal wall

Measures to protect these features: E&S control features to be implemented to ensure no contamination to the canal waters downstream or the Potomac River. Rocks and stones disassembled from the level 33 canal wall are to be washed and properly maintained throughout construction phasing. These stones are to be re-used when reconstructing the stone wall.

Identify on site map: See Appendix B

Description of unique features that are to be preserved: Level 33 canal wall and C&O canal prism.

Describe measures to protect these features: Project limits have been set to only disturb the portion of the level wall that is included within the scope of the improvement project. Project limits have been set to maintain integrity of surrounding level wall that is not within project scope.

― Describe unique site features including streams, stream buffers, wetlands, specimen trees, natural vegetation, steep slopes, or highly erodible soils that are to be preserved.

― Describe measures to protect these features.

― Include these features and areas on your site maps.

― For more information, see SWPPP Guide, Chapter 3.A and 3.B.

1.8 Potential Sources of Pollution

Potential sources of sediment to stormwater runoff: N/A

Trade Name Material Stormwater Pollutants Location

Excavation/Clearing Sediment Canal prism and Level 33 disturbed area

Structure Construction Cure Materials/Other Chemicals Canal prism and Level 33 disturbed area

Paving Operations Sediment Harpers Ferry Rd

Construction Equipment Fuels/Lubricants Canal prism and Level 33 disturbed area

1.9 Endangered Species Certification

Are endangered or threatened species and critical habitats on or near the project area?

Yes No

Describe how this determination was made:

Documentation provided by NPS does not indicate any endangered or threatened species in critical habitats.

― Identify and list all potential sources of sediment, which may reasonably be expected to affect the quality of stormwater discharges from the construction site.

― Identify and list all potential sources of pollution, other than sediment, which may reasonably be expected to affect the quality of stormwater discharges from the construction site.

― Before beginning construction, determine whether endangered or threatened species or their critical habitats are on or near your site.

― Adapt this section as needed for state or tribal endangered species requirements and, if applicable, document any measures deemed necessary to protect endangered or threatened species or their critical habitats.

― For more information on this topic, see SWPPP Guide, Chapter 3.B.

― Additional information on Endangered Species Act (ESA) provisions is at www.epa.gov/npdes/stormwater/esa

If yes, describe the species and/or critical habitat:

N/A

If yes, describe or refer to documentation that determines the likelihood of an impact on identified species and/or habitat and the steps taken to address that impact. (Note, if species are on or near your project site, EPA strongly recommends that the site operator work closely with the appropriate field office of the U.S. Fish and Wildlife Service or National Marine

Fisheries Service. For concerns related to state or tribal listing of species, please contact a state or tribal official.)

N/A

1.10 Historic Preservation

Are there any historic sites on or near the construction site?

Yes No

Describe how this determination was made:

The site is located within the Chesapeake & Ohio Canal National Historical Park. Level 33 canal wall was constructed circa 1830.

If yes, describe or refer to documentation that determines the likelihood of an impact on this historic site and the steps taken to address that impact.

The Level 33 wall project is a reconstruction restoration of the historic canal wall structure.

1.11 Applicable Federal, Tribal, State or Local Programs

Structural wall improvements work area is less than 5,000 ft2, therefore, no stormwater management is required per MDE. Project will require Erosion & Sediment Control approval by MDE.

Instructions:

― Before you begin construction, you should review federal and any applicable state, local, or tribal historic preservation laws and determine if there are historic sites on or near your project. If so, you might need to make adjustments to your construction plans or to your stormwater controls to ensure that these historic sites are not damaged.

― For more information, see SWPPP Guide, Chapter 3.B or contact your state or tribal historic preservation officer.

Instructions:

― Note other applicable federal, tribal, state or local soil and erosion control and stormwater management requirements that apply to your construction site.

1.12 Maps

Include the site maps with the SWPPP. See Appendix B

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

These maps should include the following:

― Direction(s) of stormwater flow and approximate slopes before and after major grading activities;

― Areas and timing of soil disturbance;

― Areas that will not be disturbed;

― Natural features to be preserved;

― Locations of major structural and non-structural BMPs identified in the SWPPP;

― Locations and timing of stabilization measures;

― Locations of off-site material, waste, borrow, or equipment storage areas;

― Locations of all waters of the United States, including wetlands;

― Locations where stormwater discharges to a surface water;

― Locations of storm drain inlets; and

― Areas where final stabilization has been accomplished.

― For more information, see SWPPP Guide, Chapter 3.C.

SECTION 2: EROSION AND SEDIMENT CONTROL BMPS

― Describe the BMPs that will be implemented to control pollutants in stormwater discharges. For each major activity identified, do the following

Clearly describe appropriate control measures.

Describe the general sequence during the construction process in which the measures will be implemented.

Describe the maintenance and inspection procedures that will be used for that specific BMP.

Include protocols, thresholds, and schedules for cleaning, repairing, or replacing damaged or failing BMPs.

Identify staff responsible for maintaining BMPs.

(If your SWPPP is shared by multiple operators, indicate the operator responsible for each BMP.)

― Categorize each BMP under one of the following 10 areas of BMP activity as described below:

2.1 Minimize disturbed area and protect natural features and soil

2.2 Phase Construction Activity

2.3 Control Stormwater flowing onto and through the project

2.4 Stabilize Soils

2.5 Protect Slopes

2.6 Protect Storm Drain Inlets

2.7 Establish Perimeter Controls and Sediment Barriers

2.8 Retain Sediment On-Site and Control Dewatering Practices

2.9 Establish Stabilized Construction Exits

2.10 Any Additional BMPs

― Note the location of each BMP on your site map(s).

― For any structural BMPs, you should provide design specifications and details and refer to them. Attach them as appendices to the SWPPP or within the text of the SWPPP.

― For more information, see SWPPP Guide, Chapter 4.

― Consult your state’s design manual or one of those listed in Appendix D of the SWPPP Guide.

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

2.1 Minimize Disturbed Area and Protect Natural Features and

Soil

Inspection and maintenance schedules will be in accordance with the approved final MDE

Erosion and Sediment Control plans.

2.2 Phase Construction Activity

Construction sequencing will be in accordance with the approved final MDE Erosion and

Sediment Control plans.

― Describe the areas that will be disturbed with each phase of construction and the methods (e.g., signs, fences) that you will use to protect those areas that should not be disturbed. Describe natural features identified earlier and how each will be protected during construction activity. Also describe how topsoil will be preserved. Include these areas and associated BMPs on your site map(s) also. (For more information, see SWPPP Guide, Chapter 4, ESC Principle 1.)

― Also, see EPA’s Preserving Natural Vegetation BMP Fact Sheet at www.epa.gov/npdes/stormwater/menuofbmps/construction/perserve_veg

Instructions:

― Describe the intended construction sequencing and timing of major activities, including any opportunities for phasing grading and stabilization activities to minimize the overall amount of disturbed soil that will be subject to potential erosion at one time. Also, describe opportunities for timing grading and stabilization so that all or a majority of the soil disturbance occurs during a time of year with less erosion potential (i.e., during the dry or less windy season). (For more information, see SWPPP Guide, Chapter 4, ESC Principle 2.) It might be useful to develop a separate, detailed site map for each phase of construction.

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

2.3 Control Stormwater Flowing onto and through the Project

BMP Description: sandbag cofferdam – temporary barrier in or around a body of water which allows the process of de-watering, diversion, or damming of water within and enclosed area

Installation Schedule: TBD

Maintenance and

Inspection:

Responsible Staff: TBD

BMP Description: removable pump station – temporary structure used to remove water from excavated areas, sediment traps, and basins

Installation Schedule: TBD

Maintenance and

Inspection:

BMP Description: clean water by-pass pipe – temporary pipe installed to convey channel or pipe flow around a work area

Installation Schedule: TBD

Maintenance and

Inspection:

― Describe structural practices (e.g., diversions, berms, ditches, storage basins) including design specifications and details used to divert flows from exposed soils, retain or detain flows, or otherwise limit runoff and the discharge of pollutants from exposed areas of the site. (For more information, see SWPPP Guide, Chapter 4, ESC Principle 3.)

2.4 Stabilize Soils

BMP Description: seeding & mulching- outside of the canal prism and towpath

Permanent Temporary

Installation Schedule: TBD

Maintenance and

Inspection:

BMP Description: seeding & mulching- outside of the canal prism and towpath

Permanent Temporary

Installation Schedule: TBD

Maintenance and

Inspection:

― Describe controls (e.g., interim seeding with native vegetation, hydroseeding) to stabilize exposed soils where construction activities have temporarily or permanently ceased. Also describe measures to control dust generation. Avoid using impervious surfaces for stabilization whenever possible. (For more information, see SWPPP Guide, Chapter 4, ESC Principle 4.)

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

2.5 Protect Slopes

BMP Description: erosion control blankets

Installation Schedule: TBD

Maintenance and

Inspection:

2.6 Protect Storm Drain Inlets

― Describe controls (e.g., erosion control blankets, tackifiers) including design specifications and details that will be implemented to protect all slopes. (For more information, see SWPPP Guide, Chapter 4, ESC Principle 5.)

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

Instructions:

― Describe controls (e.g., inserts, rock-filled bags, or block and gravel) including design specifications and details that will be implemented to protect all inlets receiving stormwater from the project during the entire project. (For more information, see SWPPP Guide, Chapter 4, ESC Principle 6.)

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

2.7 Establish Perimeter Controls and Sediment Barriers

BMP Description: construction safety fence

Maintenance and

Inspection:

BMP Description: silt fence, filter sock

Maintenance and

Inspection:

BMP Description: tree protection

Maintenance and

Inspection:

― Describe structural practices (e.g., silt fences or fiber rolls) including design specifications and details to filter and trap sediment before it leaves the construction site. (For more information, see SWPPP Guide, Chapter 4, ESC Principle 7.)

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

2.8 Retain Sediment On-Site

BMP Description: portable sediment tank- a compartmented container through which sediment-laden water is pumped in order to trap and retain the sediment

Installation Schedule: TBD

Maintenance and

Inspection:

2.9 Establish Stabilized Construction Exits

BMP Description: stabilized construction entrance- layer of aggregate that is underlain with nonwoven geotextile at points of ingress and egress of the construction site to reduce tracking of sediment onto roadways and provide a stable entrance/exit from the site.

Installation Schedule: N/A

Maintenance and

Inspection:

Responsible Staff: N/A

― Describe sediment control practices (e.g., sediment trap or sediment basin), including design specifications and details (volume, dimensions, outlet structure) that will be implemented at the construction site to retain sediments on-site. (For more information, see SWPPP Guide, Chapter 4, ESC Principle 8.)

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

― Describe location(s) of vehicle entrance(s) and exit(s), procedures to remove accumulated sediment off-site (e.g., vehicle tracking), and stabilization practices (e.g., stone pads or wash racks or both) to minimize off-site vehicle tracking of sediments and discharges to stormwater. (For more information, see SWPPP Guide, Chapter 4, ESC Principle 9.)

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

BMP Description: N/A

Installation Schedule: N/A

Maintenance and

Inspection:

2.10 Additional BMPs

SECTION 3: GOOD HOUSEKEEPING BMPS

― Describe the key good housekeeping and pollution prevention (P2) BMPs that will be implemented to control pollutants in stormwater.

― Categorize each good housekeeping and pollution prevention (P2) BMP under one of the following seven categories:

3.1 Material Handling and Waste Management

3.2 Establish Proper Building Material Staging Areas

3.3 Designate Washout Areas

3.4 Establish Proper Equipment/Vehicle Fueling and Maintenance Practices

3.5 Allowable Non-Stormwater Discharges and Control Equipment/Vehicle Washing

3.6 Spill Prevention and Control Plan

3.7 Any Additional BMPs

― For more information, see SWPPP Guide, Chapter 5.

― Consult your state’s design manual or resources in Appendix D of the SWPPP Guide.

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

3.1 Material Handling and Waste Management

BMP Description: Concrete Construction and Materials Handling

Maintenance and

Inspection:

Concrete construction equipment will not be allowed to wash out or discharge surplus concrete or drum wash on site, except in a specifically designated concrete disposal area.

3.2 Establish Proper Building Material Staging Areas

BMP Description: silt fence

Maintenance and

Inspection:

BMP Description: construction safety fence

Maintenance and

Inspection:

― Describe measures (e.g., trash disposal, sanitary wastes, recycling, and proper material handling) to prevent the discharge of solid materials to receiving waters, except as authorized by a permit issued under section 404 of the CWA (For more information, see SWPPP Guide, Chapter 5, P2 Principle 1.)

― Also, see EPA’s General Construction Site Waste Management BMP Fact Sheet at www.epa.gov/npdes/stormwater/menuofbmps/construction/cons_wasteman

Instructions:

― Describe construction materials expected to be stored on-site and procedures for storage of materials to minimize exposure of the materials to stormwater. (For more information, see SWPPP Guide, Chapter 5, P2 Principle 2.)

3.3 Designate Washout Areas

BMP Description: By Contractor

Installation Schedule: N/A

Maintenance and

Inspection:

3.4 Establish Proper Equipment/Vehicle Fueling and

Maintenance Practices

Maintenance and

Inspection:

Maintenance and

Inspection:

TBD

Responsible Staff: TBD

Instructions:

― Describe location(s) and controls to eliminate the potential for discharges from washout areas for concrete mixers, paint, stucco, and so on. (For more information, see SWPPP Guide, Chapter 5, P2 Principle 3.)

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

Instructions:

― Describe equipment/vehicle fueling and maintenance practices that will be implemented to control pollutants to stormwater (e.g., secondary containment, drip pans, and spill kits) (For more information, see SWPPP Guide, Chapter 5, P2 Principle 4.)

― Also, see EPA’s Vehicle Maintenance and Washing Areas BMP Fact Sheet at www.epa.gov/npdes/stormwater/menuofbmps/construction/vehicile_maintain

3.5 Control Equipment/Vehicle Washing

BMP Description: By Contractor in the approximate locations indicated on the plans

Maintenance and

Inspection:

Maintenance and

Inspection:

3.6 Spill Prevention and Control Plan

By Contractor.

― Describe equipment/vehicle washing practices that will be implemented to control pollutants to stormwater.

(For more information, see SWPPP Guide, Chapter 5, P2 Principle 5.)

― Also, see EPA’s Vehicle Maintenance and Washing Areas BMP Fact Sheet at www.epa.gov/npdes/stormwater/menuofbmps/construction/vehicile_maintain

Instructions:

― Describe the spill prevention and control plan to include ways to reduce the chance of spills, stop the source of spills, contain and clean up spills, dispose of materials contaminated by spills, and train personnel responsible for spill prevention and control. (For more information, see SWPPP Guide, Chapter 5, P2 Principle 6.)

― Also, see EPA’s Spill Prevention and Control Plan BMP Fact sheet at www.epa.gov/npdes/stormwater/menuofbmps/construction/spill_control

3.7 Any Additional BMPs

Maintenance and

Inspection:

Maintenance and

Inspection:

― Describe any additional BMPs that do not fit into the above categories. Indicate the problem they are intended to address.

3.8 Allowable Non-Stormwater Discharge Management

List allowable non-stormwater discharges and the measures used to eliminate or reduce them and to prevent them from becoming contaminated:

BMP Description: Uncontaminated ground water -spill prevention measures

Maintenance and

Inspection:

BMP Description: Vehicle washing – designate washout areas

Maintenance and

Inspection:

― Identify all allowable sources of non-stormwater discharges that are not identified. The allowable non-stormwater discharges identified might include the following (see your permit for an exact list):

Waters used to wash vehicles where detergents are not used

Water used to control dust

Potable water including uncontaminated water line flushings

Routine external building wash down that does not use detergents

Pavement wash waters where spills or leaks of toxic or hazardous materials have not occurred (unless all spilled material has been removed) and where detergents are not used

Uncontaminated air conditioning or compressor condensate

Uncontaminated ground water or spring water

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

Uncontaminated excavation dewatering

Landscape irrigation

― Identify measures used to eliminate or reduce these discharges and the BMPs used to prevent them from becoming contaminated.

BMP Description: Uncontaminated excavation dewatering -spill prevention measures

Installation Schedule: TBD

Maintenance and

Inspection:

SECTION 4: SELECTING POST-CONSTRUCTION BMPs

Maintenance and

Inspection:

Maintenance and

Inspection:

Project limit of disturbance is less than 5,000 ft2, therefore, no stormwater management is required per MDE.

Instructions:

― Describe all post-construction stormwater management measures that will be installed during the construction process to control pollutants in stormwater discharges after construction operations have been completed. Examples of post-construction BMPs include the following:

Biofilters

Detention/retention devices

Earth dikes, drainage swales, and lined ditches

Infiltration basins

Porous pavement

Other proprietary permanent structural BMPs

Outlet protection/velocity dissipation devices

Slope protection

Vegetated strips and/or swales

― Identify any applicable federal, state, local, or tribal requirements for design or installation.

― Describe how low-impact designs or smart growth considerations have been incorporated into the design.

― For any structural BMPs, you should have design specifications and details and refer to them. Attach them as appendices to the SWPPP or within the text of the SWPPP.

― For more information on this topic, see your state’s stormwater manual.

― You might also want to consult one of the references listed in Appendix D of the SWPPP Guide.

― Visit the post-construction section of EPA’s Menu of BMPs at: www.epa.gov/npes/menuofbmps

SECTION 5: INSPECTIONS

5.1 Inspections

1. Inspection Personnel: Identify the person(s) who will be responsible for conducting inspections and describe their qualifications:

NPS- TBD

MDE- Inspector TBD

2. Inspection Schedule and Procedures:

Describe the inspection schedules and procedures you have developed for your site (include frequency of inspections for each BMP or group of BMPs, indicate when you will inspect, e.g., before/during/and after rain events, spot inspections):

The MDE inspector will review the sediment and erosion control measures to ensure they are in accordance with the December 2011 MDE Erosion & Sediment Control manual.

Describe the general procedures for correcting problems when they are identified. Include responsible staff and time frames for making corrections:

General correctional procedures are at the discretion of the assigned MDE inspector.

Attach a copy of the inspection report you will use for your site.

The type of inspection report is at the discretion of the MDE inspector.

― Identify the individual(s) responsible for conducting inspections and describe their qualifications.

Reference or attach the inspection form that will be used.

― Describe the frequency that inspections will occur at your site including any correlations to storm frequency and intensity.

― Note that inspection details for particular BMPs should be included in Sections 2 and 3.

― You should also document the repairs and maintenance that you undertake as a result of your inspections.

These actions can be documented in the corrective action log described in Part 5.3 below.

― For more on this topic, see SWPPP Guide, Chapters 6 and 8.

― Also, see suggested inspection form in Appendix B of the SWPPP Guide.

5.2 Delegation of Authority

Duly Authorized Representative(s) or Position(s):

Attach a copy of the signed delegation of authority form in Appendix K by NPS.

5.3 Corrective Action Log

Corrective Action Log:

At the discretion of the DOEE inspector.

Instructions:

― Identify the individual(s) or specifically describe the position where the construction site operator has delegated authority for the purposes of signing inspection reports, certifications, or other information.

― Attach the delegation of authority form that will be used.

― For more on this topic, see SWPPP Guide, Chapter 7.

― Create here, or as an attachment, a corrective action log. This log should describe repair, replacement, and maintenance of BMPs undertaken as a result of the inspections and maintenance procedures described above. Actions related to the findings of inspections should reference the specific inspection report.

― This log should describe actions taken, date completed, and note the person that completed the work.

SECTION 6: RECORDKEEPING AND TRAINING

6.1 Recordkeeping

Records will be retained for a minimum period of at least 3 years after the permit is terminated.

Date(s) when major grading activities occur:

TBD- By Contractor

Date(s) when construction activities temporarily or permanently cease on a portion of the site:

TBD- By Contractor

Date(s) when an area is either temporarily or permanently stabilized:

6.2 Log of Changes to the SWPPP

Log of changes and updates to the SWPPP

Instructions:

― The following is a list of records you should keep at your project site available for inspectors to review:

― Dates of grading, construction activity, and stabilization (which is covered in Sections 2 and 3)

― A copy of the construction general permit (attach)

― The signed and certified NOI form or permit application form (attach)

― A copy of the letter from EPA or/the state notifying you of their receipt of your complete NOI/application (attach)

― Inspection reports (attach)

― Records relating to endangered species and historic preservation (attach)

― Check your permit for additional details

― For more on this subject, see SWPPP Guide, Chapter 6.C.

― Create a log here, or as an attachment, of changes and updates to the SWPPP. You should include additions of new BMPs, replacement of failed BMPs, significant changes in the activities or their timing on the project, changes in personnel, changes in inspection and maintenance procedures, updates to site maps, and so on.

6.3 Training

Individual(s) Responsible for Training:

Describe Training Conducted:

• General stormwater and BMP awareness training for staff and subcontractors:

• Detailed training for staff and subcontractors with specific stormwater responsibilities:

― Training your staff and subcontractors is an effective BMP. As with the other steps you take to prevent stormwater problems at your site, you should document the training that you conduct for your staff, for those with specific stormwater responsibilities (e.g. installing, inspecting, and maintaining BMPs), and for subcontractors.

― Include dates, number of attendees, subjects covered, and length of training.

― For more on this subject, see SWPPP Guide, Chapter 8.

SECTION 7: FINAL STABILIZATION

BMP Description: TBD- By Contractor

Maintenance and

Inspection:

BMP Description: TBD- By Contractor

Maintenance and

Inspection:

― Describe procedures for final stabilization. If you complete major construction activities on part of your site, you can document your final stabilization efforts for that portion of the site. Many permits will allow you to then discontinue inspection activities in these areas (be sure to check your permit for exact requirements). You can amend or add to this section as areas of your project are finally stabilized.

― Update your site plans to indicate areas that have achieved final stabilization.

― Note that dates for areas that have achieved final stabilization should be included in Section 6, Part 6.1 of this SWPPP.

― For more on this topic, see SWPPP Guide, Chapter 9.

SECTION 8: CERTIFICATION AND NOTIFICATION

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

Name: Title:

Signature: Date:

TBD- Contractor

― The SWPPP should be signed and certified by the construction operator(s). Attach a copy of the NOI and permit authorization letter received from EPA or the state in Appendix D.

SWPPP APPENDICES

Attach the following documentation to the SWPPP:

Appendix A – General Location Map

Appendix B – Site Maps

Appendix C – Construction General Permit

Appendix D – NOI and Acknowledgement Letter from EPA/State

Appendix E – Inspection Reports

Appendix F – Corrective Action Log (or in Part 5.3)

Appendix G – SWPPP Amendment Log (or in Part 6.2)

Appendix H – Subcontractor Certifications/Agreements

Appendix I – Grading and Stabilization Activities Log (or in Part 6.1)

Appendix J – Training Log

Appendix K – Delegation of Authority

Appendix L – Additional Information (i.e., Endangered Species and Historic Preservation Documentation)

TBD- by Contractor or NPS

Appendix A – General Location Map

Appendix F – Sample Corrective Action Log

Project Name:

SWPPP Contact:

Inspection

Date

Inspector

Name(s)

Description of BMP Deficiency Corrective Action Needed (including planned date/responsible person)

Date Action

Taken/Responsible person

Appendix G – Sample SWPPP Amendment Log

Amendment No. Description of the Amendment Date of Amendment Amendment Prepared by [Name(s) and Title]

Appendix H – Sample Subcontractor Certifications/Agreements

SUBCONTRACTOR CERTIFICATION

STORMWATER POLLUTION PREVENTION PLAN

Project Number: 245005

Project Title: Level 33 Wall

Operator(s): National Park Service, National Park Area

As a subcontractor, you are required to comply with the Stormwater Pollution Prevention Plan (SWPPP) for any work that you perform on-site. Any person or group who violates any condition of the SWPPP may be subject to substantial penalties or loss of contract. You are encouraged to advise each of your employees working on this project of the requirements of the SWPPP. A copy of the SWPPP is available for your review at the office trailer.

Each subcontractor engaged in activities at the construction site that could impact stormwater must be identified and sign the following certification statement:

I certify under the penalty of law that I have read and understand the terms and conditions of the SWPPP for the above designated project and agree to follow the BMPs and practices described in the SWPPP.

This certification is hereby signed in reference to the above named project:

Company: TBD

Address:

Telephone Number:

Type of construction service to be provided: Sitework

Signature:

Title:

Date:

Appendix I – Sample Grading and Stabilization Activities Log

Date Grading Activity Initiated

Description of Grading Activity Date Grading Activity Ceased (Indicate Temporary or Permanent)

Date When Stabilization Measures are Initiated

Description of Stabilization Measure and Location

Appendix J – Sample SWPPP Training Log

Stormwater Pollution Prevention Training Log

Project Location:

Instructor’s Name(s):

Instructor’s Title(s):

Course Location: Date:

Course Length (hours):

Stormwater Training Topic: (check as appropriate)

Erosion Control BMPs Emergency Procedures

Sediment Control BMPs Good Housekeeping BMPs

Non-Stormwater BMPs

Specific Training Objective:

Attendee Roster: (attach additional pages as necessary)

No. Name of Attendee Company

Appendix K – Sample Delegation of Authority Form

Delegation of Authority

I, _______________________ (name), hereby designate the person or specifically described position below to be a duly authorized representative for the purpose of overseeing compliance with environmental requirements, including the Construction General Permit, at the

____________________________________ construction site. The designee is authorized to sign any reports, stormwater pollution prevention plans and all other documents required by the permit.

________________________________________ (name of person or position)

________________________________________ (company)

________________________________________ (address)

________________________________________ (city, state, zip)

________________________________________ (phone)

By signing this authorization, I confirm that I meet the requirements to make such a designation as set forth in ____________________________________ (Reference State Permit), and that the designee above meets the definition of a “duly authorized representative” as set forth in

____________________________________ (Reference State Permit).

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

Name:

Company:

Title:

Signature:

Date:

Appendix L – Site Plan

ALT

FRONT

ROYAL

TURNPIKE

PENN

FALLS

TAVERN

V.C.

GREAT

CUMBERLAND

V.C.

HQ.

ANTIETAM

CREEK

HANCOCK

V.C.

GEORGETOWN

CANAL NATIONAL HISTORICAL

PARK

CHESAPEAKE AND

OHIO

ROCKVILLE

GAITHERSBURG

ARLINGTON

LEESBURG

WINCHESTER

CUMBERLAND

OLDTOWN

LOCKS

FOUR

HARPERS

CHARLESTOWN FERRY

MARTINSBURG

FREDERICK

HAGERSTOWN

WILLIAMSPORT

HANCOCK

CREEK

MILE

FIFTEEN

MT.

AIRY

WASHINGTON

D.C.

BALTIMORE

COLUMBIA

PENNSYLVANIA

HARRISBURG,

MA

RYL

AN

D

CO

LUM

BIA

DIS

TRI

CT

OF

V

IR

G

IN

IA

SHENANDOAH

AIRPORT

INTERNATIONAL

DULLES

TO 66

RIVER

M

ARYLAND

MEMORIAL

PARKWAY

GEORGE

WASHINGTON

VIRGIN

IA

POOLESVILLE

ROCKS

RIVER

POTOMAC

PAW

PAW

POTOMAC

RIVER

CACAPON

RIVER

BRANCH

SOUTH

POTOMAC

RIVER

TUNNEL

VIR

G

IN

IA

W E S T

VIR

G

IN

IA

RIVER

POTOMAC 40

BOONSBORO

POINT

BRUNSWICK

N.H.S.

FERRY

HARPERS 15

BATTLEFIELD

NATIONAL

ANTIETAM

SHARPSBURG

APPALACHIAN

TRAIL TO

MARYLAND

PENNSYLVANIA

TURNPIKE

RD.

ORLEANS

LITTLE

PENNSYLVANIA

TO

PENNSYLVANIA

TO

TURNPIKE

OF

MEMORIAL

PARKWAY

CLARA

BARTON

HARRISONBURG

WE

ST

VIRGINIA

M

ARYLAND

WASHINGTON

D.C.

WARRENTON

CHARLOTTESVILLE

N.P.

SHENANDOAH

FREDERICKSBURG

CARLISLE

MARYLAND

PENNSYLVANIA

HARRISBURG

BALTIMORE

VIR

GI

NI

AVI

RG

IN

IA

WE

ST

WINCHESTER

VIR

GI

NI

A

MARYLAND

PENNSYLVANIA

FREDERICK

BEDFORD

DEPARTMENT OF THE INTERIOR

UNITED STATES

NATIONAL PARK SERVICE

DENVER SERVICE CENTER OF

PMIS/PKG NO

SHEET

STATEREGION

LOCATION WITHIN PARK

NAME OF PARK

TITLE OF PROJECT DRAWING NO.

146384

COUNTY

A/E FIRMS QE#:

RECOMMENDED:

APPROVED:

Project Manager Date

Superintendent Date

ARCHITECT:

QUINN EVANS

WASHINGTON D.C.

STRUCTURAL:

McMULLAN

LANDSCAPE/CIVIL:

VHB

GEOTECHNICAL:

TERRACON

q u in n e va n s .c o m Q E Q P ro je c ts C H O H W a s te W e ir D w g s R e v it C H O H Le v e l3 R V T T it le b lo c k s .r v t

LEVEL 33 WALL

HARPERS FERRY RD

Chesapeake & Ohio N.H.P.

NAT'L CAPITAL MD

FINAL CONSTRUCTION

DOCUMENTS

WASHINGTON

42023570

245005

VIRGINIA & MARYLAND

1 32

LEGEND

V.C.

HQ.

CHESAPEAKE AND OHIO CANAL NATIONAL HISTORICAL PARK

SCALE OF MILES

SCALE OF KILOMETERS

5 0

15105

5 10

AIRPORT

INFORMATION CENTER

RANGER STATION

RIVER

CANAL AND

TOWPATH

STATE

LINE

PARK HEADQUARTERS

VISITOR CENTER

TRAIL

SCALE OF MILES

022 22

CHOH LEVEL 33 WALLS

PROJECT LOCATION

OWNER’S / DEVELOPER’S CERTIFICATION

I / We hereby certify that all clearing, grading, construction, and/or development will be done pursuant to this plan and that any responsible personnel involved in the construction project will have a certificate of attendance at a Maryland Department of the Environment approved training program for the control of erosion and sediment before beginning the project. I/We hereby authorize the right of entry for periodic on-site evaluation by appropriate inspection and enforcement authority or the State of Maryland, Department of the Environment. I/We hereby certify that stormwater management facilities will be maintained in accordance with approved plans.

Date Owner / Developer Signature

Responsible Personnel Certification No. Printed Name and Title

DESIGN CERTIFICATION

I hereby certify that this plan has been designed in accordance with the 2011 Maryland Standards and Specifications for Soil Erosion and Sediment Control, the 2000 Maryland Stormwater Design Manual, Volumes I & II including supplements, the Environment Article Sections 4-101 through 116 and Sections 4-201 and 215, and the Code of Maryland Regulations (COMAR) 26.17.01 and COMAR 26.17.02 for erosion and sediment control and stormwater management, respectively.

Date Designer’s Signature

Md. Registration No.__________ ________________________________ P.E., R.L.S., RLA, or R.A. (circle one) Printed Name

STANDARD STABILIZATION NOTE

Following initial soil disturbance or redisturbance, permanent or temporary stabilization shall be completed within three (3) calendar days as to the surface of all perimeter controls, dikes, swales, ditches, perimeter slopes, and all slopes steeper than 3 horizontal to 1 vertical (3:1);

and seven (7) days as to all other disturbed or graded areas on the project site not under active grading.

NAME OF PARK

Chesapeake & Ohio Canal N.H.P.

DATE:

DESIGNED:

TECH. REVIEW:

SUB SHEET NO. TITLE OF SHEETA/E FIRM:

OF

PMIS/PKG NO

SHEET

146384

WASHINGTON

D.C.

ARCHITECT:

DRAWING NO.

245005G01 4/22/22

SHEET LIST

LEVEL 33 WALL

CHESAPEAKE AND OHIO CANAL (CHOH)

1 32

SHEET # TITLE OF SHEET

G00 COVER SHEET

G01 SHEET LIST

G1.0 STAGING AND ACCESS PLAN KEYMAP

G1.1 STAGING AND ACCESS PLAN

G2.0 DETOUR PLAN

C1.0 EROSION & SEDIMENT CONTROL PLAN - 1

C2.0 EROSION & SEDIMENT CONTROL PLAN - 2

C3.0 EROSION & SEDIMENT CONTROL PLAN - 3

C4.0 EROSION & SEDIMENT CONTROL DETAILS - 1

C4.1 EROSION & SEDIMENT CONTROL DETAILS - 2

C5.0 EROSION & SEDIMENT CONTROL NOTES

C5.1 EROSION & SEDIMENT CONTROL NOTES

C5.2 EROSION & SEDIMENT CONTROL NOTES

C5.3 EROSION & SEDIMENT CONTROL NOTES

TT1.0 SURVEY ALIGNMENT EXHIBIT

S0.1 DESIGN NOTES

S1.0 EXISTING WALL PLAN

S1.1 EXISTING WALL SECTION

S1.2 EXISTING WALL ELEVATION

S1.3 NEW WORK PLAN

S3.0 PHASING

S4.0 WALL SECTION C

S4.1 WALL SECTION C.1

S4.2 WALL SECTION D

S4.3 WALL SECTION D.1

S4.4 WALL SECTION E

S4.5 WALL SECTION F

S4.6 WALL SECTION G

S4.7 WALL SECTION H

S4.8 LONG WALL SECTION

S6.0 ELEVATIONS

S6.1 DETAILS

METAL GUARDRAIL

POST (TYP.)

PROBE 2

PROBE 1

PROBE 1B

PROBE 2B

ASPHALT

PATCH

ASPHALT

ASPHALT

ASPHALT

METAL GUARDRAIL

POST (TYP.)

METAL GUARDRAIL

POST (TYP.)

GRAVEL GRAVEL

STONE WALL

STONE WALL

STONE WALL

12" RCP

INV=275.49

12" RCP

INV=274.78

12" RCP

INV=277.05

12" RCP

INV=278.26

12" CPP

INV=258.32

UTILITY POLE

UTILITY POLE

UTILITY POLE

UTILITY POLE

UTILITY POLE

UTILITY POLE

OVERHEAD

WIRE (TYP.) OVERHEAD

WIRE…