1565917 spc 1of1_appendix f 2of2.pdf

P-898 Replace SSN Berthing Pier 32 eProject No. 1565917

Naval Submarine Base New London - Groton, CT

Appendix F

APPENDIX 'F2'

Stormwater Management Plan and Permit

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Appendix F

Stormwater Management Plan

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STORMWATER MANAGEMENT PLAN

March 2017

Final

CONTRACT: N62470-14-D-9022

DELIVERY ORDER: 0010

Naval Facilities Engineering Command

Mid-Atlantic

Naval Submarine Base New London

Groton, Connecticut

Final

NAVAL SUBMARINE BASE NEW LONDON –

GROTON, CONNECTICUT

Prepared For:

NAVAL FACILITIES ENGINEERING COMMAND

MID-ATLANTIC

NORFOLK, VA 23511

Contracting Officer’s Representative: David J. Cotnoir, PE

Contract: N62470-14-D-9022 Delivery Order: 0010

March 2017

AH/BC Navy JV, LLC

11837 Rock Landing Drive Suite 300

Newport News, Virginia

NAVAL SUBMARINE BASE NEW LONDON TABLE OF CONTENTS

AH/BC Navy JV, LLC i Final, March 2017 119-10

ACRONYMS AND ABBREVIATIONS ........................................................................ v

ACKNOWLEDGEMENT ........................................................................................... vii

PLAN CERTIFICATION ............................................................................................ ix

RECORD OF REVISIONS AND AMENDMENTS ...................................................... xi

1. INTRODUCTION ............................................................................................. 1-1

1.1 FACILITY DESCRIPTION ............................................................................. 1-1

1.2 PROJECT BACKGROUND ........................................................................... 1-2

1.3 ADDITIONAL STORMWATER GENERAL PERMIT COVERAGE .......................... 1-4

1.4 PLAN ORGANIZATION................................................................................ 1-4

2. MCM 1: PUBLIC EDUCATION AND OUTREACH......................................... 2-1

2.1 REQUIREMENTS ....................................................................................... 2-1

2.2 PUBLIC EDUCATION PROGRAM.................................................................. 2-1

2.3 DOCUMENTATION ..................................................................................... 2-3

2.4 PUBLIC EDUCATION AND OUTREACH SCHEDULE ........................................ 2-4

2.5 SUPPLEMENTAL INFORMATION AND RESOURCES ........................................ 2-4

3. MCM 2: PUBLIC INVOLVEMENT / PARTICIPATION ................................... 3-1

3.1 REQUIREMENTS ....................................................................................... 3-1

3.2 IMPLEMENTATION ..................................................................................... 3-1

3.3 PUBLIC INVOLVEMENT / PARTICIPATION SCHEDULE .................................... 3-2

4. MCM 3: ILLICIT DISCHARGE DETECTION AND ELIMINATION ................. 4-1

4.1 REQUIREMENT ......................................................................................... 4-2

4.2 PROGRAM ELEMENTS ............................................................................... 4-3

4.2.1 Legal Authority ............................................................................ 4-3

4.2.2 Written IDDE Program ................................................................ 4-3

4.2.3 Public Reporting of Illicit Discharges ........................................... 4-4

4.2.4 Sanitary Sewer Overflows ........................................................... 4-5

4.2.5 Outfall / Interconnection Inventory ............................................... 4-6

4.2.6 IDDE Mapping............................................................................. 4-7

4.2.7 Assessment and Priority Ranking of Catchments ........................ 4-8

4.2.8 Outfall / Interconnection Screening and Sampling Procedures .... 4-9

4.2.9 Catchment Area Investigations ................................................. 4-10

4.2.10 Removal, Confirmation, and Follow-Up Screening .................... 4-13

4.2.11 Training ..................................................................................... 4-14

4.3 IDDE PROGRAM SCHEDULE ................................................................... 4-15

5. MCM 4: CONSTRUCTION SITE STORMWATER RUNOFF CONTROL ....... 5-1

5.1 REQUIREMENTS ....................................................................................... 5-1

5.2 PROGRAM ELEMENTS ............................................................................... 5-2

5.2.1 Legal Authority ............................................................................ 5-2

5.2.2 Interdepartmental Coordination ................................................... 5-3

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5.2.3 Plan Review and Site Inspection ................................................. 5-4

5.2.4 Public Involvement ...................................................................... 5-5

5.2.5 State Permit Notification .............................................................. 5-5

5.3 CONSTRUCTION SITE STORMWATER RUNOFF CONTROL SCHEDULE ............ 5-6

5.4 SUPPLEMENTAL INFORMATION & RESOURCES ........................................... 5-6

6. MCM 5: POST-CONSTRUCTION STORMWATER MANAGEMENT ............. 6-1

6.1 REQUIREMENTS ....................................................................................... 6-2

6.2 PROGRAM ELEMENTS ............................................................................... 6-2

6.2.1 Legal Authority ............................................................................ 6-2

6.2.2 Runoff Reduction / LID Measures ............................................... 6-3

6.2.3 Directly Connected Impervious Area ........................................... 6-5

6.2.4 Long Term Maintenance ............................................................. 6-6

6.2.5 Additional Measures for Discharges to Impaired Waters ............. 6-6

6.3 POST-CONSTRUCTION STORMWATER MANAGEMENT SCHEDULE ................. 6-7

6.4 SUPPLEMENTAL INFORMATION AND RESOURCES ........................................ 6-7

7. MCM 6: POLLUTION PREVENTION / GOOD HOUSEKEEPING .................. 7-1

7.1 REQUIREMENTS ....................................................................................... 7-1

7.2 PROGRAM ELEMENTS ............................................................................... 7-2

7.2.1 Employee Training ...................................................................... 7-2

7.2.2 Infrastructure Repair and Rehabilitation ...................................... 7-3

7.2.3 Retrofit Program .......................................................................... 7-3

7.2.4 Property and Operations Maintenance Program ......................... 7-5

7.2.5 Street, Parking, and MS4 Maintenance ....................................... 7-9

7.2.6 Snow Management Practices .................................................... 7-11

7.2.7 Coordination with Interconnected MS4s .................................... 7-13

7.2.8 Bacteria Source Reduction Program ......................................... 7-13

7.3 POLLUTION PREVENTION / GOOD HOUSEKEEPING SCHEDULE ................... 7-14

8. MONITORING REQUIREMENTS FOR DISCHARGES TO IMPAIRED

WATERS ................................................................................................................. 8-1

8.1 OUTFALL SCREENING ............................................................................... 8-1

8.2 FOLLOW-UP INVESTIGATIONS ................................................................... 8-2

8.3 PRIORITIZED ANNUAL OUTFALL MONITORING ............................................. 8-2

8.4 WET WEATHER SAMPLING AND ANALYSIS REQUIREMENTS ......................... 8-3

8.5 IMPAIRED WATERS DISCHARGE MONITORING SCHEDULE ........................... 8-3

9. REPORTING AND RECORDKEEPING REQUIREMENTS ............................. 9-1

9.1 REQUIRED CONTENT OF ANNUAL REPORTS ............................................... 9-1

9.2 AVAILABILITY OF ANNUAL REPORTS .......................................................... 9-6

9.3 RECORDKEEPING REQUIREMENTS ............................................................ 9-6

10. ADDITIONAL REQUIREMENTS AND CONDITIONS ................................... 10-1

10.1 KEEPING THE SWMP CURRENT .............................................................. 10-1

10.2 PROPER OPERATION AND MAINTENANCE ................................................. 10-2

10.3 REQUIREMENTS FOR EXISTING AND NEW DISCHARGES ............................ 10-2

10.3.1 New or Increased Discharges to Impaired Waters .................... 10-2

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10.3.2 Conditions Applicable for Certain Discharges ........................... 10-2

10.4 REGULATIONS INCORPORATED INTO THE MS4 GENERAL PERMIT AND OTHER

APPLICABLE LAWS ................................................................................. 10-3

10.5 DUTY TO CORRECT AND REPORT VIOLATIONS ......................................... 10-3

10.6 DUTY TO PROVIDE INFORMATION ............................................................ 10-3

10.7 CERTIFICATION OF DOCUMENTS ............................................................. 10-4

10.8 DATE OF FILING ..................................................................................... 10-4

10.9 FALSE STATEMENTS ............................................................................... 10-4

10.10 CORRECTION OF INACCURACIES ............................................................ 10-4

11. REFERENCES AND WORKS CONSULTED ............................................... 11-1

APPENDICES

A. MCM and BMP Implementation Schedule (6 Pages)

B. Interdepartmental Coordination Plan (8 Pages)

C. Wall Chart of Soil Erosion and Sediment Control Measures (1 Page)

TABLES

TABLE PAGE

Table 1 Record of Revisions and Amendments .................................................. xi Table 2-1 Stormwater Pollutants of Concern ....................................................... 2-2 Table 2-2 Public Education and Outreach Schedule ............................................ 2-4 Table 3-1 Public Involvement / Participation Schedule ........................................ 3-2 Table 4-1 IDDE Program Schedule ................................................................... 4-15 Table 5-1 Construction Site Stormwater Runoff Control Schedule ....................... 5-6 Table 6-1 Post-Construction Stormwater Management Schedule ........................ 6-7 Table 7-1 Pollution Prevention / Good Housekeeping Schedule ........................ 7-14 Table 8-1 Impaired Waters Discharge Monitoring Schedule ................................ 8-3 Table 9-1 Annual Report Submittal Schedule ...................................................... 9-1 Table 9-2 Summary of MCM Annual Report Requirements ................................. 9-2

FIGURES

FIGURE PAGE

Figure 1-1 SUBASENLON Vicinity and MS4 Boundary Map ................................. 1-5 Figure 5-1 SUBASENLON PWD MS4 Program Organization Chart ..................... 5-3

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NAVAL SUBMARINE BASE NEW LONDON ACRONYMS & ABBREVIATIONS

AH/BC Navy JV, LLC v Final, March 2017

ACRONYMS AND ABBREVIATIONS

AH AH/BC Navy JV, LLC

ARDM-4 Medium Auxiliary Repair Dry Dock

AST aboveground storage tank

BMP best management practice

BWTF bulky waste transfer facility

CCTV closed-circuit television

CFR Code of Federal Regulations cfu colony-forming units

CIP capital improvement plan

CT Connecticut

CTDOT Connecticut Department of Transportation

DCIA Directly Connected Impervious Area

DEEP Department of Energy and Environmental Protection

DLA Defense Logistics Agency

DoD Department of Defense

ECATTS Environmental Compliance Assessment, Training, and Tracking System

EISA Energy Independence and Security Act

EPA Environmental Protection Agency

EV Environmental Division

FEAD Facilities Engineering and Acquisition Division

GIS geographic information system

HM hazardous material

HW hazardous waste

ICP Integrated Contingency Plan

IDDE illicit discharge detection and elimination

LID low impact development

MCM minimum control measure

MEP maximum extent practicable mg/L milligram per liter mL milliliter

MS4 municipal separate storm sewer system

MWR Morale, Welfare, and Recreation

NAVFAC Naval Facilities Engineering Command

NEX Navy Exchange

NAVAL SUBMARINE BASE NEW LONDON ACRONYMS & ABBREVIATIONS

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ACRONYMS AND ABBREVIATIONS, CONTINUED

NPDES National Pollutant Discharge Elimination System

O&M operation and maintenance

OWS oil/water separator

PE Professional Engineer

PMP Pest Management Plan

POL petroleum, oil, and lubricant

PVC polyvinyl chloride

PWD Public Works Department

RFP Request for Proposal

SBFD Naval Submarine Base New London Fire Department

SHWT seasonal high water table

SIC Standard Industrial Classification

SOP standard operating procedure

SPCC spill prevention, control, and countermeasure

SSO sanitary sewer overflow

SUBASENLON Naval Submarine Base New London

SVF system vulnerability factor

SWMP Stormwater Management Plan

SWPPP Stormwater Pollution Prevention Plan

TMDL Total Maximum Daily Load

TSDF treatment, storage, and disposal facility

UA Urbanized Area

UFC Unified Facilities Criteria

US United States

WQV water quality volume

NAVAL SUBMARINE BASE NEW LONDON ACKNOWLEDGEMENT

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ACKNOWLEDGEMENT

OF

STORMWATER MANAGEMENT PLAN

I have personally examined and am familiar with the information submitted in this document and all attachments thereto, and I certify that, based on reasonable inves-tigation, including my inquiry of those individuals responsible for obtaining the infor-mation, the submitted information is true, accurate and complete to the best of my knowledge and belief. I understand that a false statement made in this document or its attachments may be punishable as a criminal offense, in accordance with Section

22a-6 of the Connecticut General Statutes, pursuant to Section 53a-157b of the Con-necticut General Statutes, and in accordance with any other applicable statute.

Capt. Paul Whitescarver Commanding Officer Naval Submarine Base New London

Groton, Connecticut

Date

NAVAL SUBMARINE BASE NEW LONDON ACKNOWLEDGEMENT

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NAVAL SUBMARINE BASE NEW LONDON PLAN CERTIFICATION

AH/BC Navy JV, LLC x Final, March 2017

NAVAL SUBMARINE BASE NEW LONDON RECORD OF REVISIONS AND AMENDMENTS

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RECORD OF REVISIONS AND AMENDMENTS

All revisions and amendments to the Stormwater Management Plan are, and will con-tinue to be, summarized in the following table.

Table 1 Record of Revisions and Amendments

Date Description of Revision/Amendment

NAVAL SUBMARINE BASE NEW LONDON RECORD OF REVISIONS AND AMENDMENTS

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STORMWATER MANAGEMENT PLAN SECTION 1

NAVAL SUBMARINE BASE NEW LONDON INTRODUCTION

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1. INTRODUCTION

AH/BC Navy JV, LLC (AH) developed this Stormwater Management Plan (SWMP) for

Naval Submarine Base New London (SUBASENLON). This project was completed under Naval Facilities Engineering Command (NAVFAC) Contract N62470-14-D-

9022, Delivery Order 0010.

1.1 FACILITY DESCRIPTION

SUBASENLON is located in the towns of Groton and Ledyard, Connecticut (CT) on the east bank of the Thames River. SUBASENLON is a military/naval installation, the primary activity being national security, classified by the Standard Industrial Classifi-cation (SIC) Code 9711, as identified in the Standard Industrial Classification Manual, Executive Office of the President, Office of Management and Budget 1987. SUBAS-

ENLON is divided by the Providence and Worcester Railroad tracks into “Upper

Base” and “Lower Base.” The Lower Base consists of the area west of the tracks, down to the Thames River waterfront; the Upper Base occupies the high ground be-tween the Providence and Worcester Tracks and Route 12.

The Lower Base includes the following primary activities:

• Facilities dedicated to submarine support, maintenance, and repair

• SUBASENLON Fire Department (SBFD)

• Steam and power plant (auxiliary power only)

• Oily waste treatment facility

• Morale, Welfare, and Recreation (MWR) Marina

• Berthing piers

• Medium Auxiliary Repair Dry Dock (ARDM-4)

• Maintenance and repair activities and small craft dockage

• Various parking, loading, and storage areas associated with activities within proximate buildings

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The Upper Base includes the following primary activities:

• Facilities providing personnel support and administrative services

• Maintenance and repair activities

• Submarine Learning Center

• Base maintenance activities

• Weapons storage facilities

• Medical research facilities

• Bulky Waste Transfer Facility (BWTF)

• Defense Logistics Agency (DLA) Disposition Services facility

• Hazardous Waste (HW) Treatment, Storage, and Disposal Facility (TSDF)

• Naval Branch Health Clinic

• Recreational activities

• Various parking, loading, and storage areas associated with activities within proximate buildings

SUBASENLON is located within the Thames River watershed. The Thames River is classified as SB1 and is impaired for bacteria in the vicinity of SUBASENLON. Storm-water from the site drains west towards the Thames River via streams and the stormwater drainage system.

1.2 PROJECT BACKGROUND

The CT Department of Energy and Environmental Protection (DEEP) stormwater general permit program was developed pursuant to United States (US) Environmental

Protection Agency’s (EPA) Stormwater Rule. Phase I of the EPA Stormwater Rule was published in 1990 and addressed runoff from medium and large municipal sepa-rate storm sewer systems (MS4s) with populations greater than 100,000, as well as runoff from industrial and construction activities. Phase II of the Stormwater Rule was published in 1999 and addressed runoff from small MS4s with populations less than

100,000.

1 CT Department of Energy and Environmental Protection (DEEP) defines SB waters as waters desig-nated for the following: habitat for marine fish, other aquatic life, and wildlife; commercial shellfish har-vesting; recreation; industrial water supply; and navigation.

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The CT DEEP first issued the General Permit for the Discharge of Stormwater from

Small Municipal Separate Storm Sewer Systems (hereafter referred to as the “MS4

General Permit”) on January 9, 2004 under this Phase II rule. The purpose of the

MS4 General Permit is to protect waters of the state from urban stormwater runoff through MS4s. The EPA defines a regulated small MS4 as a municipality that owns and operates a storm sewer system in an Urbanized Area (UA). UAs are densely populated areas surrounding urban centers designated by the federal Census Bureau based on each decennial census. The MS4 General Permit issued in 2004 (coverage based on 2000 census) has been reissued without modification since 2004. However, as of July 1, 2017 a new MS4 General Permit will take effect (coverage based on

2010 census). The new MS4 General Permit also extends coverage to institutions such as universities and federal facilities that are located in UAs, including SUBAS-

ENLON. Figure 1-1 provides a vicinity map of SUBASENLON illustrating the bounda-ry of the MS4 to be covered under the MS4 General Permit.

The requirements of the MS4 General Permit include submitting a registration to ob-tain permit coverage, developing and implementing a SWMP, and monitoring six stormwater outfalls annually during a rain event. The SWMP is a document prepared by the owner/operator of the MS4 that contains information on its stormwater and municipal infrastructure along with best management practices (BMPs) to minimize the discharge of pollutants through the storm sewer system to the maximum extent practicable (MEP).

The SWMP organizes BMPs into the following six categories, referred to as minimum control measures (MCMs):

• MCM 1: Public Education and Outreach

• MCM 2: Public Involvement / Participation

• MCM 3: Illicit Discharge Detection and Elimination

• MCM 4: Construction Site Stormwater Runoff Control

• MCM 5: Post-Construction Stormwater Management

• MCM 6: Pollution Prevention / Good Housekeeping

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1.3 ADDITIONAL STORMWATER GENERAL PERMIT COVERAGE

SUBASENLON currently holds a General Permit for the Discharge of Stormwater As-sociated with Industrial Activity (hereafter referred to as the “Industrial Stormwater

General Permit”), issued by the CT DEEP (permit number GSI000679). The Industrial

Stormwater General Permit covers point source stormwater discharges associated with regulated industrial activity. Under this permit, SUBASENLON is required to as-sess stormwater quality and implement BMPs to reduce and/or eliminate the dis-charge of pollutants at those activities. The SUBASENLON Stormwater Pollution Pre-vention Plan (SWPPP) serves as the management document for the Industrial

Stormwater Permit.

1.4 PLAN ORGANIZATION

Following the introduction, this SWMP presents information in the following sections:

• Section 2 MCM 1 Public Education and Outreach

• Section 3 MCM 2 Public Involvement / Participation

• Section 4 MCM 3 Illicit Discharge Detection and Elimination

• Section 5 MCM 4 Construction Site Stormwater Runoff Control

• Section 6 MCM 5 Post-Construction Stormwater Management

• Section 7 MCM 6 Pollution Prevention / Good Housekeeping

• Section 8 Monitoring Requirements for Discharges to Impaired Waters

• Section 9 Reporting and Recordkeeping Requirements

• Section 10 Additional Requirements and Conditions

• Section 11 References and Works Consulted

The following appendices provide supplemental information:

• Appendix A includes a Gantt chart and table that summarize the implementa-tion milestones for each MCM and associated BMPs.

• Appendix B provides an interdepartmental coordination plan that includes each department’s responsibilities and positions responsible for each task.

• Appendix C provides a large-format wall chart summarizing soil erosion and sediment control measures for implementation during construction activities.

AH/BC Navy JV, LLC 1-5 Final, March 2017

Figure 1-1 SUBASENLON Vicinity and MS4 Boundary Map

AH/BC Navy JV, LLC 1-6 Final, March 2017

STORMWATER MANAGEMENT PLAN SECTION 2

NAVAL SUBMARINE BASE NEW LONDON MCM 1: PUBLIC EDUCATION AND OUTREACH

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2. MCM 1: PUBLIC EDUCATION AND OUTREACH

Section 6(a)(1) of the MS4 General Permit

Education and outreach help the public of SUBASENLON better understand why a stormwater program is necessary and how their actions impact stormwater quality. A better understanding of the stormwater program will result in greater support for the program and ensure compliance with the MS4 General Permit.

The following goals of this MCM will be met by implementing the BMPs described in this section:

• Raise awareness that polluted stormwater runoff is a significant source of water quality problems

• Motivate the public to engage in activities that reduce polluted stormwater runoff and promote water quality

At SUBASENLON, the public includes servicemen and women, residents, govern-ment employees, contractor workers, etc. within the SUBASENLON fence line.

2.1 REQUIREMENTS

Section 6(a)(1) of the MS4 General Permit requires SUBASENLON to implement a public education program that includes distributing educational materials and/or con-ducting outreach activities that raise public awareness about stormwater pollution and identify actions that promote water quality.

2.2 PUBLIC EDUCATION PROGRAM

SUBASENLON will distribute educational materials to its public or conduct equivalent outreach activities about stormwater pollution (types, sources) and its impact on water quality. Furthermore, the program will inform the public of actions it can take to re-

AH/BC Navy JV, LLC 2-2 Final, March 2017 119-10 duce pollutants in stormwater runoff. Table 2-1 summarizes stormwater pollutants of concern and their sources.

Table 2-1 Stormwater Pollutants of Concern

Source

Pollutant

B a c te ri a

S e d im e n t

T ra s h

M ta ls

O il a n d

G re a

N u tr ie n ts

H rb ic id e s

P e s ti c id

Illicit Discharges X X X X X X X

Disposal of Waste into MS4

X X X X X X

Impervious Cover X X X X

Landscaping/ Grounds Maintenance

X X X X X

Outdoor Material Storage

X X X X

HM/HW and POL Storage, Transfer, and Disposal X X X X

Vehicle Washing/ Maintenance

X X X X

Stormwater Utility O&M

X X X X X X

Wastewater Utility O&M

X X X X

Note:

1. The Thames River, which drains the entirety of SUBASENLON, is impaired for bacteria. The

SUBASENLON public education program will include additional content targeted at this pollutant.

Abbreviations:

HM/HW – hazardous material / hazardous waste O&M – operation and maintenance POL – petroleum, oil, lubricant

Stormwater runoff from SUBASENLON ultimately discharges to the Thames River, which is impaired for bacteria. Therefore, educational material will be specifically tai-lored to address the following potential sources of bacteria in stormwater discharges:

• Sanitary sewer cross-connections

• Waterfowl and feral cats

• Pet waste

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• Solid waste management

The MS4 General Permit also requires educational material pertaining to septic sys-tems for systems that discharge to waters impaired for bacteria. However, this re-quirement does not apply as there are no active septic systems at SUBASENLON.

Implementation: SUBASENLON Environmental Division (EV) will administer the public education program. SUBASENLON will disseminate the educational content of its program through the following media:

• Stormwater inlet stenciling

• Web-based learning

• “Earth Day,” “Meet the Navy,” and other similar educational events

• Flyers / brochures

• The Dolphin (SUBASENLON newspaper)

The education materials will be targeted at the following SUBASENLON audiences:

• Military and civilian workforce

• Base contractors

• Landscape / grounds maintenance workers

• Residents

SUBASENLON will pursue collaboration / partnerships with local organizations and environmental groups (when possible). Additionally, SUBASENLON will continue to require all base personnel and contractors to complete Environmental Management

System (EMS) training through the Environmental Compliance Assessment, Training, and Tracking System (ECATTS).

2.3 DOCUMENTATION

The following information is required for inclusion in each Annual Report:

• Type of material distributed

• Quantity of material distributed

• Source of information

• Method of distribution

• Summary of outreach efforts (including date and number of participants)

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2.4 PUBLIC EDUCATION AND OUTREACH SCHEDULE

Table 2-2 summarizes the scheduled milestones for MCM 1.

Table 2-2 Public Education and Outreach Schedule

Task Task Start Date Task Due Date

Complete development of educational materials Jul 1, 2017 Jul 1, 2018

Implement the public education program (continue implementation until permit expiration)

Jul 1, 2017 Jul 1, 2019

2.5 SUPPLEMENTAL INFORMATION AND RESOURCES

SUBASENLON will reference educational resources made available by multiple enti-ties including the EPA, CT DEEP, and NAVFAC when developing the educational material. The following web links include reference material utilized in the develop-ment of SUBASENLON’s public education program:

https://www3.epa.gov/npdes/pubs/fact2-3.pdf https://www3.epa.gov/npdes/pubs/after_the_storm.pdf https://www3.epa.gov/npdes/pubs/nps_month_bookmark.pdf https://www3.epa.gov/npdes/pubs/doorhanger.pdf https://www3.epa.gov/npdes/pubs/stormwaterstickers.pdf https://www3.epa.gov/npdes/pubs/solution_to_pollution.pdf https://www3.epa.gov/npdes/pubs/stormwaterplacemat.pdf https://www3.epa.gov/npdes/pubs/potmunpoll.pdf http://www.ct.gov/deep/cwp/view.asp?a=2690&q=322450&deepNav_GID=1511 http://nemo.uconn.edu/tools/publications.htm https://www3.epa.gov/npdes/pubs/fact2-3.pdf https://www3.epa.gov/npdes/pubs/after_the_storm.pdf https://www3.epa.gov/npdes/pubs/nps_month_bookmark.pdf https://www3.epa.gov/npdes/pubs/doorhanger.pdf https://www3.epa.gov/npdes/pubs/stormwaterstickers.pdf https://www3.epa.gov/npdes/pubs/solution_to_pollution.pdf https://www3.epa.gov/npdes/pubs/stormwaterplacemat.pdf https://www3.epa.gov/npdes/pubs/potmunpoll.pdf http://www.ct.gov/deep/cwp/view.asp?a=2690&q=322450&deepNav_GID=1511 http://nemo.uconn.edu/tools/publications.htm

STORMWATER MANAGEMENT PLAN SECTION 3

NAVAL SUBMARINE BASE NEW LONDON MCM 2: PUBLIC INVOLVEMENT / PARTICIPATION

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3. MCM 2: PUBLIC INVOLVEMENT / PARTICIPATION

Section 6(a)(2) of the MS4 General Permit

The public can be a valuable resource during the development and implementation of a stormwater program. Engaging the public in the program broadens support, helps identify potential obstacles to implementation, invites additional expertise, and pro-vides a conduit to other complimentary programs.

3.1 REQUIREMENTS

Section 6(a)(2) of the MS4 General Permit requires SUBASENLON to provide oppor-tunities for the public to participate in the planning and implementation of the MS4 program. The permit specifically requires public notification and public comment peri-ods prior to finalization of the SWMP and each Annual Report.

3.2 IMPLEMENTATION

SUBASENLON will publish a public notice (on a website, through an email or mailing list, and/or in a newspaper) publicizing the availability for review of the SWMP and each Annual Report. The public notice will include contact information (name, phone number, address, and email) for receipt of public comments. The SWMP and each

Annual Report will be publicly available at the following website:

http://www.cnic.navy.mil/regions/cnrma/installations/navsubbase_new_london/om/en vironmental_support.html

A hardcopy of each document will be available for review at Building 439 at the offic-es of the SUBASENLON EV.

http://www.cnic.navy.mil/regions/cnrma/installations/navsubbase_new_london/om/environmental_support.html http://www.cnic.navy.mil/regions/cnrma/installations/navsubbase_new_london/om/environmental_support.html

STORMWATER MANAGEMENT PLAN SECTION 3

NAVAL SUBMARINE BASE NEW LONDON MCM 2: PUBLIC INVOLVEMENT / PARTICIPATION

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3.3 PUBLIC INVOLVEMENT / PARTICIPATION SCHEDULE

The SWMP will be published for public review and comment at least 90 days prior to the effective date of this permit (effective date = July 1, 2017; 90 days prior = April 2, 2017). The public may provide comments on or before 60 days from the date of the availability of the plan (June 1, 2017).

Public notice of the 30-day comment period on the Annual Report will be published no later than January 31, annually. The public notice for the first Annual Report will occur no later than January 31, 2019. Each Annual Report will be made available for public review and comment on or before February 15, annually, and the report will be submitted to CT DEEP by April 1, annually.

Table 3-1 summarizes the schedule for MCM 2.

Table 3-1 Public Involvement / Participation Schedule

Task Task Start

Date Task Due

Date

Publish SWMP for public review and commenting period

Apr 2, 2017 Jun 1, 2017

Publish public notice for the 30-day Annual Report 1 commenting period

Jan 31, 2019 Feb 15, 2019

Publish public notice for the 30-day Annual Report 2 commenting period

Jan 31, 2020 Feb 15, 2020

Publish public notice for the 30-day Annual Report 3 commenting period

Jan 31, 2021 Feb 15, 2021

Publish public notice for the 30-day Annual Report 4 commenting period

Jan 31, 2022 Feb 15, 2022

Publish Draft Annual Report 1 for public review and commenting period

Feb 15, 2019 Mar 17, 2019

Publish Draft Annual Report 2 for public review and commenting period

Feb 15, 2020 Mar 16, 2020

Publish Draft Annual Report 3 for public review and commenting period

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Publish Draft Annual Report 4 for public review and commenting period

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SECTION 4

STORMWATER MANAGEMENT PLAN MCM 3: ILLICIT DISCHARGE

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4. MCM 3: ILLICIT DISCHARGE DETECTION AND

ELIMINATION

Section 6(a)(3) of the MS4 General Permit

An illicit discharge is any discharge to the MS4 or waters of the state that does not consist entirely of stormwater, with some exceptions. Exceptions include those dis-charges identified as allowable in the MS4 General Permit (when such non-stormwater discharges are not significant contributors of pollution) and industrial dis-charges covered by a separate CT DEEP-issued National Pollutant Discharge Elimi-nation System (NPDES) permit. The MS4 General Permit allows the following non-stormwater discharges:

• Uncontaminated groundwater discharges including, but not limited to, pumped groundwater, foundation drains, water from crawl space pumps, and footing drains

• Irrigation water including, but not limited to, landscape irrigation and lawn watering runoff

• Residual street wash water associated with sweeping

• Discharges or flows from firefighting activities (except training)

• Naturally occurring discharges such as rising ground waters, uncontaminated groundwater infiltration2, springs, diverted stream flows, and flows from riparian habitats and wetlands.

Common industrial discharges covered by SUBASENLON’s NPDES permit include the following allowable non-stormwater discharges:

• Fire hydrant, fire pump, and sprinkler test water

• Steam condensate return overflow

• Utility sump/trench dewatering

• Various non-contact cooling waters

• Potable water to prevent freezing of water supply lines to vessels

• Various dry dock discharges such as ballast water discharges, biofouling prevention discharges, sonar dome discharges, and non-contact cooling water discharges.

2 Infiltration as defined by the Code of Federal Regulations (CFR) at 40 CFR 35.2005(20).

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Illicit discharges may result from direct cross-connections (e.g., sanitary sewer piped directly into the MS4) or from indirect sources. The following sources are common examples of indirect illicit discharges:

• Infiltration from broken sanitary sewer pipes or septic systems

• Accidental wastewater / POL spills

• Intentionally dumped or pumped wastewater / POLs

An effective illicit discharge detection and elimination (IDDE) program is necessary to protect waterbodies from these discharges and the following harmful pollutants that they may contain: heavy metals, toxics, oil and grease, solvents, nutrients, viruses, and bacteria.

4.1 REQUIREMENT

Section 6(a)(3) of the MS4 General Permit requires SUBASENLON to develop and implement a written IDDE Program that accomplishes the following goals:

• Provide legal authority to prohibit and eliminate illicit discharges to the MS4

• Detect and locate the source of any illicit discharges

• Eliminate those illicit discharges

• Ensure ongoing screening and tracking to prevent and/or eliminate future illicit discharges

The permit requires that, upon detection, SUBASENLON eliminate illicit discharges as soon as possible. If, upon source confirmation, the illicit discharge cannot be elim-inated within 60 days, SUBASENLON will establish a schedule for its elimination that does not exceed 180 days (from confirmation). Actions to eliminate illicit discharges will begin immediately. In the period between detection and elimination, SUBAS-

ENLON will take all reasonable and prudent measures to minimize the discharge of pollutants to its MS4 or waters of the state.

Records of the following illicit discharge abatement activities will be maintained: loca-tion, description, date(s) of inspection, sampling data (if applicable), action(s) taken, date of removal or repair, and responsible party(ies). This information will also be in-cluded in the Annual Report.

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Refer to Appendix B of the MS4 General Permit for the IDDE Program Protocol. The remainder of this section provides a summary of this protocol.

4.2 PROGRAM ELEMENTS

The required program elements are summarized herein. For each element, the sum-mary provides a date by which that element must be implemented and the method through which the requirement will be met.

4.2.1 Legal Authority

SUBASENLON will update its existing Environmental Protection Instructions

(SUBASENLONINST 5090.7A) to include the following provisions:

• Authorizes SUBASENLON to implement and enforce the IDDE Program

• Prohibits illicit discharges to the MS4 and requires elimination of such discharges per Section 6(a)(3)(A) of the MS4 General Permit as summarized in Section 4.1 of this SWMP

• Controls the discharge of spills and prohibits the dumping or disposal of materials including, but not limited to, residential, industrial, and commercial wastes; trash; used motor vehicle fluids; pesticides; fertilizers; food preparation waste; leaf litter; grass clippings; and animal wastes into the MS4

• Authorizes administrative action by the SUBASENLON upon any person or entity creating an illicit discharge or spilling or dumping as specified in this section

• Provides any additional authorities specified in the written IDDE Program

Schedule: Complete prior to July 1, 2019

Implementation: Authority to implement and administer the IDDE Program will be formalized by an updated SUBASENLON Environmental Protection Instructions

(SUBASENLONINST 5090.7A).

4.2.2 Written IDDE Program

SUBASENLON will develop a written IDDE Program (separate from this SWMP) in accordance with Section 6(a)(3) of the MS4 General Permit. Appendix B of the permit provides the IDDE Program Protocol that includes the specific requirements of the written IDDE Program (refer to Section A(7) of the appendix). The written program will

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AH/BC Navy JV, LLC 4-4 Final, March 2017 119-10 clearly identify responsibilities with regard to eliminating illicit discharges. The state-ment will identify lead departments and/or personnel responsible for implementing the

IDDE Program. If multiple departments are responsible, the program will specify spe-cific areas of responsibility and processes for coordination.

The written IDDE Program will be designed to prevent illicit discharges and sanitary sewer overflows (SSOs) through implementation of BMPs such as spill response/prevention procedures, public awareness programs, reporting hotlines, and training of personnel involved in the program.

Schedule: Complete prior to July 1, 2019

Implementation: SUBASENLON will complete its written IDDE Program Plan in 2017.

4.2.3 Public Reporting of Illicit Discharges

SUBASENLON will create a means for the SUBASENLON public to report illicit dis-charges. Reported discharges will be promptly investigated and, if confirmed, elimi-nated, provided that the report provides at least a date, time, and location for the ob-served discharge.

Schedule: Complete prior to July 1, 2019

Implementation: SUBASENLON personnel report suspected SSOs and illicit dis-charges to the EV Stormwater Program Manager by calling (860) 694-5191. The re-porting requirements and procedures are included in SUBASENLON’s IDDE Program training (refer to Section 4.2.11 of this document). The IDDE Program (to be complet-ed in 2017) includes provisions for tracking of reported SSOs and illicit discharges.

Documentation: All publicly reported illicit discharges and the responses to the re-ported discharges will be documented in the Annual Report.

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4.2.4 Sanitary Sewer Overflows

SUBASENLON will eliminate SSOs as soon as possible upon detection and will im-plement interim measures to minimize the discharge of pollutants into and from its

MS4 while working to eliminate such SSOs.

SUBASENLON will develop an inventory of all SSOs that have occurred in the previ-ous five years. The inventory will include the following attributes:

• Location and receiving water

• Statement of whether the SSO entered the MS4 or a surface water directly

• Date and time of the start and end of each SSO

• Estimated volume of the SSO

• Description of the SSO that indicates the cause or suspected cause

• Completed mitigation and corrective measures with dates implemented

• Planned mitigation and corrective measures with implementation schedules

The SSO Inventory will be updated annually.

Within five days of SSO detection, SUBASENLON will provide written notice to the

Commissioner that includes the same information included in the SSO Inventory.

Schedule: Complete prior to October 29, 2017 (then update annually)

Implementation: SUBASENLON maintains a spills and leaks database that includes all SSOs in addition to spills and leaks of other materials. This database includes all required SSO related fields noted in this section. SUBASENLON provides written no-tice to the Commissioner within five days of any SSO detection.

Documentation: The annually updated SSO inventory will be included in the Annual

Report (note: SSO information will be extracted from the spills and leaks database for the timeline covered by each Annual Report).

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4.2.5 Outfall / Interconnection Inventory

An outfall is a point source where the MS4 discharges to waters of the state. An inter-connection is a point where one MS4 connects to another stormwater system or MS4 and the combined discharge ultimately enters waters of the state. SUBASENLON will develop an inventory that includes the following attributes for each outfall or point of interconnection associated with its MS4:

• Unique identifier

• Receiving water

• Date of most recent inspection

• Type and shape of conveyance (e.g., circular pipe, rectangular channel)

• Dimension(s)

• Material (e.g., polyvinyl chloride [PVC], reinforced concrete)

• Spatial location (latitude and longitude with a minimum accuracy of +/- 0.30 feet)

• Physical condition as of the most recent inspection

• Indicators of non-stormwater discharge from most recent inspection (presence or evidence of suspected flow, odor, color, turbidity, floatables, or POL sheen)

The Outfall / Interconnection Inventory will be updated annually, which will require inspection of each outfall and point of interconnection at least once per year.

Schedule: Complete prior to July 1, 2019

Implementation: SUBASENLON’s Outfall / Interconnection Inventory (scheduled for completion in 2017) includes the attributes required by the MS4 General Permit. The inventory is being developed using existing geographic information system (GIS) data supplemented with field-collected data. Field data collection was conducted in Octo-ber 2016 and consisted of visual inspections of each accessible outfall or first acces-sible structure upstream of the outfall.

Documentation: The annually updated Outfall / Interconnection Inventory will be in-cluded in the Annual Report.

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4.2.6 IDDE Mapping

SUBASENLON will develop detailed mapping of its MS4 to facilitate effective system

O&M and aid in the identification of potential sanitary sewer cross-connections. This mapping can also be used to trace suspected illicit discharges upstream to their sources or identify areas or features downstream of confirmed discharges for mitiga-tion efforts. Accurate mapping is essential to the implementation of the overall IDDE

Program.

The MS4 General Permit requires the following mapping elements:

• Delineated catchment areas (i.e., drainage basins)

• Outfalls

• Interconnections with other stormwater systems or MS4s

• Waterbodies identified by name (identify impairments)

• Pipes and conduits

• Open channel conveyances (swales, ditches, etc.)

• Catch basins / curb inlets

• Manholes and junctions

• Stormwater treatment structures (detention/retention systems, bioretention areas, oil/water separators [OWSs], particle separators, pervious pavement, other engineered systems)

• SUBASENLON sanitary sewer system

The MS4 General Permit recommends the following mapping elements, if available:

• Storm sewer conduit material, size, and age

• Sanitary sewer conduit material, size, and age

• Septic systems

• Seasonal high water table (SHWT) elevations

• Topography

• Orthophotography

• Location of historical illicit discharge investigations including flow isolation, dye testing, and closed-circuit television (CCTV) inspections

• Locations of suspected, confirmed, and eliminated illicit discharges

The IDDE mapping will be updated on an as-needed basis whenever major changes to critical infrastructure are made or new data is created and/or made available.

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Schedule: Complete prior to July 1, 2020

Implementation: SUBASENLON developed IDDE mapping in accordance with the requirements of the MS4 General Permit concurrently with the development of this

SWMP. The mapping was developed using existing GIS data supplemented with field-collected data.

Documentation: The progress towards completion of the permit-required IDDE map-ping (complete) will be included in the first Annual Report.

4.2.7 Assessment and Priority Ranking of Catchments

SUBASENLON will assess and priority rank its catchment areas (i.e., drainage ba-sins) in terms of illicit discharge and SSO potential and the related public health sig-nificance. Catchment area ranking will determine the priority order for outfall screen-ing and catchment investigations. Each catchment area will be classified into one of the following categories:

• Excluded: no potential for illicit discharges or SSOs and excluded from the IDDE Program (limited to roadway drainage in undeveloped areas with no dwellings or sanitary sewer; drainage for athletic fields; parks; or undeveloped green space without services)

• Problem: known or suspected contributions of illicit discharges, including any catchment where any previous screening indicates potential sanitary sewer input (olfactory/visual evidence or suspect analytical results)

• High Priority: presence of system vulnerability factors (SVFs) (refer to Section

4.2.9.1 for a list of SVFs) and/or pollutant indicators observed during baseline outfall screening

• Low Priority: does not fall into other three categories

After initial classification, the catchment areas will be prioritized within each category based on the following factors:

• Past discharge complaints / reports

• Poor dry weather receiving water quality

• Development density within area

• Age of surrounding development and infrastructure

• Sewer conversions

• Historic combined sewer systems

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• Presences of septic systems

• Culverted streams

Schedule: Complete prior to July 1, 2019

Implementation: SUBASENLON began assessing and priority ranking its catchment areas concurrently with the development of its written IDDE Program Plan. The plan will be completed in 2017.

Documentation: Progress of SUBASENLON’s catchment area assessment and prior-ity ranking effort will be included in the Annual Report. Priority rankings will be updat-ed annually based on new information resulting from other IDDE Program efforts

(e.g., mapping updates, outfall screening and sampling).

4.2.8 Outfall / Interconnection Screening and Sampling Procedures

The written IDDE Program Plan (to be completed in 2017) includes procedures for screening and sampling of SUBASENLON’s outfalls and interconnections for pres-ence or evidence of illicit discharges. Dry weather and wet weather screening and sampling will be conducted at all outfalls and interconnections. The written proce-dures will apply to each of the following types of screening and sampling:

• Baseline outfall and interconnection screening and sampling (dry weather)

• Confirmatory screening and sampling (dry and/or wet weather)

• Follow-up screening and sampling (dry and/or wet weather depending on catchment area characteristics)

The written IDDE Program Plan details the following:

• Procedures for sample collection, field-measurement of specified water quality parameters, and sample storage and conveyance (including holding times)

• Course of action in cases where outfalls or interconnections are inaccessible or submerged (i.e., proceed to the first accessible upstream drainage structure and report the location with the screening and sampling results)

• Dry weather screening and sampling:

Proceed only when no more than 0.1 inches of rainfall has occurred in the previous 24-hour period

Visually screen for presence or evidence of dry weather flow

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If no flow is observed, but evidence of a dry weather flow exists, revisit the outfall during dry weather within one week, if possible, to perform second dry weather screening (and sampling, if applicable)

• Wet weather screening and sampling:

Sample during or after a storm event of sufficient intensity to produce a discharge (no minimum rainfall volume specified)

To occur in the spring (March to June) when groundwater levels are elevated

Intent of sampling is to identify illicit discharges only made active or evident during wet weather flow conditions

Consider including provisions that assist in the identification of suspected illicit discharges such as specifying a minimum storm intensity that would likely trigger SSOs or avoiding sampling during the “first flush”

• Collect samples and analyze for ammonia, chlorine, conductivity, salinity, Enterococci, fecal coliform, surfactants, and temperature

• Sampling results that exceed one of the following criteria will be considered highly likely to contain illicit discharges from sanitary sources (such catchment areas will be ranked at the top of the “High Priority Catchments” category):

Ammonia ≥ 0.5 milligrams per liter (mg/L),…