JB_CHS-AB_Storm_Water_Management_Plan.pdf

FINAL

PHASE II STORM WATER MANAGEMENT PLAN

JOINT BASE CHARLESTON – AIR BASE

Points of Contact

CYNTHIA M. BROWN GS12 AFCEC/CZO

Joint Base Charleston Installation Support Team East Region Support Team, Water Panel Center for Environmental Excellence – Operations Division Air Force Civil Engineer Center

DSN 673-3656; COMM 843-963-3656

cynthia.brown.15@us.af.mil JB CHS – Air Base Storm Water Manager Copes Wannamaker 210 W Stewart Ave Joint Base Charleston, SC 29404-4827

(843) 963-1437 charles.wannamaker@us.af.mil AGEISS Project Manager Kimberly Lane KimberlyL@AGEISS-Inc.com

Prepared by:

AGEISS Inc.

8610 N New Braunfels, Ste 300

San Antonio, TX 78210

210.533.5100 phone

June 2014

Contract Number: FA8903-13-D-0004 Task Order Number: 0002 mailto:cynthia.brown.15@us.af.mil mailto:charles.wannamaker@us.af.mil

Storm Water Management Plan – 2014 Update Final – June 2014 Joint Base Charleston – Air Base

TABLE OF CONTENTS

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

1.1 FACILITY DESCRIPTION ................................................................................ 1-2

1.2 REGULATORY BACKGROUND ..................................................................... 1-3

1.3 PHASE II STORM WATER PERMIT REGULATIONS................................... 1-4

1.4 SMS4 RESIDENTIAL DRAINAGE AREAS..................................................... 1-4

1.5 STORM WATER SYSTEM OVERVIEW ......................................................... 1-4

2.0 BEST MANAGEMENT PRACTICES ........................................................................ 2-1

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

2.2 MCM 2: PUBLIC PARTICIPATION / INVOLVEMENT ................................. 2-2

2.3 MCM 3: ILLICIT DISCHARGE DETECTION AND ELIMINATION ............ 2-3

2.3.1 Illicit Discharge Detection Plan ............................................................... 2-4

2.4 MCM 4: CONSTRUCTION SITE RUNOFF CONTROL .................................. 2-5

2.4.1 Procedures for Land Disturbing Activity ................................................. 2-6

2.4.1.1 Notice of Intent ......................................................................... 2-7

2.4.1.2 Site-Specific Storm Water Pollution Prevention Plans

(S3WP3s) .................................................................................. 2-7

2.4.1.3 Notice of Termination ............................................................... 2-8

2.4.2 Phase II Requirements for Coastal Zone Construction ............................ 2-8

2.5 MCM 5: POST-CONSTRUCTION STORM WATER MANAGEMENT

IN NEW DEVELOPMENT / REDEVELOPMENT ........................................... 2-9

2.6 MCM 6: POLLUTION PREVENTION AND GOOD HOUSEKEEPING ...... 2-10

3.0 MONITORING, RECORDKEEPING AND REPORTING ..................................... 3-1

3.1 MONITORING .................................................................................................... 3-1

3.1.1 TMDL Monitoring ................................................................................... 3-1

3.2 RECORDKEEPING ............................................................................................ 3-1

3.3 ANNUAL REPORT ............................................................................................ 3-2

3.4 REVIEWING AND UPDATING STORM WATER MANAGEMENT

PLANS ................................................................................................................. 3-2

4.0 REFERENCES ............................................................................................................... 4-1

Contract # FA8903-13-D-0004 TO 0002 i

LIST OF TABLES

Table 1-1. JB CHS-AB SMS4 Residential Drainage Areas

Table 1-2. Ashley River and Cooper River Segments Listed on the 2013 South Carolina 303(d) Impaired List in the Santee Basin

Table 1-3. Ashley River Stream Segments Listed on the 2013 South Carolina TMDL List in the Santee Basin

Table 2-1. Public Education and Outreach (MCM 1) Actions/Activities

Table 2-2. Public Participation and Involvement (MCM 2) Actions/Activities

Table 2-3. Illicit Discharge Detection and Elimination (MCM 3) Actions/Activities

Table 2-4. Construction Site Runoff Control (MCM 4) Actions/Activities

Table 2-5. Post-Construction Storm Water Management in New Development/Redevelopment (MCM 5) Actions/Activities

Table 2-6. Pollution Prevention and Good Housekeeping (MCM 6) Actions/Activities

LIST OF FIGURES

Figure 1. Site Location and Topographic Map

Figure 2. Storm Water Drainage Area Map

Figure 2a. Storm Water Drainage Area Map-North Auxiliary Airfield

Figure 3. Construction Site Review Process

LIST OF APPENDICES

Appendix A MCM Requirements

Appendix B Recordkeeping

Appendix C Notice of Intent

Appendix D Sample Brochures

Appendix E JB CHS Housing Community Handbook

Apendix F JB CHS – Air Base Environmental Specifications 01501

Appendix G UFC 3-210-10 – Low Impact Development (15 Nov 2010)

Appendix H SCDHEC Guidance – Construction Within Coastal Zone MS4 Areas (9/22/2008)

Appendix I SCDHEC Implementation Schedule for JB CHS Weapons Station

Contract # FA8903-13-D-0004 TO 0002 ii

ACRONYMS

AFB Air Force Base AFI Air Force Instruction BMP Best Management Practice BOD5 Biological Oxygen Demand BRAC Base Realignment and Closure CEIE 628 Civil Engineer Squadron, Environmental Management Element CEOHP 628 Civil Engineer Squadron, Pavements/Construction Equipment CENMI CE Construction Control Rep CFR Code of Federal Regulations COD5 Chemical Oxygen Demand CWA Clean Water Act CZC Coastal Zone Consistency DO Dissolved Oxygen DoD Department of Defense GP General Permit GMC Grounds Maintenance Contractor IGP Industrial Storm Water General NPDES Permit JB CHS-AB Joint Base Charleston – Air Base MCM Minimum Control Measure MEP Maximum Extent Practicable MS4 Municipal Separate Storm Sewer System MSGP Multi-sector General Permit NOI Notice of Intent NOT Notice of Termination NPDES National Pollutant Discharge Elimination System NWS Naval Weapons Station OCRM Ocean and Coastal Resource Management S3WP3 Site-Specific Storm Water Pollution Prevention Plan SCDHEC South Carolina Department of Health and Environmental Control SMS4 Small Municipal Separate Storm Sewer System SPCC Spill Prevention, Control, and Countermeasures SWMP Storm Water Management Plan SWPPP Storm Water Pollution Prevention Plan TKN Total Kjeldahl Nitrogen TMDL Total Maximum Daily Load U.S. EPA U.S. Environmental Protection Agency UA Urbanized Area UFC United Facilities Criteria UOD Ultimate Oxygen Demand USAF U.S. Air Force WLA Wasteload Allocation WQMS Water Quality Monitoring Stations

Contract # FA8903-13-D-0004 TO 0002 iii

1.0 INTRODUCTION

The Joint Base Charleston – Air Base (JB CHS-AB) Storm Water Management Plan (SWMP) documents the management practices, control techniques and system, design, and engineering methods employed at the base with the goal of reducing the discharge of pollutants to the Small Municipal Separate Storm Sewer System (SMS4) to the maximum extent practicable (MEP).

The storm water drainage from the entire Base is described in detail in the Storm Water Pollution Prevention Plan (SWPPP) and includes industrial, residential, and recreational areas. This SWMP has been prepared in addition to the SWPPP and focuses exclusively on greater controls for storm water runoff from drainage basins and construction activities. The SWMP has been prepared to comply with the South Carolina Department of Health and Environmental Control (SCDHEC) National Pollutant Discharge Elimination System (NPDES) General Permit (GP) for Storm Water Discharges from Regulated (SMS4 GP), permit number SCR030000 effective 1 January 2014 and expires 31 December 2019. JB CHS-AB Municipal Separate Storm Sewer System (MS4) is authorized for storm water discharges under the Certificate of Coverage #:

SCR031909. This SWMP is required to be fully developed by 1 June 2015 and fully implemented by the expiration of the MS4 GP. This plan is an update of the plan prepared in 2011 for the MS4 GP. The changes in this update do not subtract or replace any components, controls or requirements from the SWMP.

In accordance with the authorization requirements of Section 1.4 of the MS4 GP, as indicated by SCDHEC, a new Notice of Intent (NOI) was submitted to the SCDHEC in June 2014 to reapply for coverage as an existing permittee in accordance with SC 61-9 122.6(a) as requested by the Department.

Best management practices (BMPs), measurable goals, persons responsible and all permit requirements in accordance with the MS4 GP are required to implement and enforce an NPDES qualified local program. This SWMP addresses the required six minimum control measures (MCMs). JB CHS-AB’s compliance with the six MCMs and measurable goals for each MCM are described in Section 2.0 of this plan.

Updates to this plan include:

♦ Additional clarification in Section 1.3, as to the legal authority to implement and enforce SWMP objectives.

♦ Updated Table 1-2 and newly developed Table 1-3 to distinguish between impaired waters and 303(d) Total Maximum Daily Loads (TMDLs).

♦ Tables 2-1 through 2-6 followed the U.S. Environmental Protection Agency’s (U.S. EPA’s) MS4 Permit Improvement Guide to give meaningful and achievable benchmarks to the six MCMs.

Contract # FA8903-13-D-0004 TO 0002 1-1

The six minimum control measures include:

♦ MCM 1 – Public Education and Outreach ♦ MCM 2 – Public Participation and Involvement ♦ MCM 3 – Illicit Discharge Detection and Elimination ♦ MCM 4 – Construction Site Runoff Control ♦ MCM 5 – Post-Construction Runoff Control ♦ MCM 6 – Pollution Prevention/Good Housekeeping

The Base program is designed to prevent and reduce storm water pollutant discharges by complying with provisions from South Carolina Permits Regulation 61-9, Pollution Control Act of South Carolina (SC Code Sections 48-1-10 et seq.), and Federal Clean Water Act (CWA). In addition, BMPs for pre and post construction activities are included in this SWMP. The SWMP is organized as follows:

♦ Section 1 Facility Description ♦ Section 2 Best Management Practices ♦ Section 3 Monitoring, Recordkeeping and Reporting ♦ Section 4 References

1.1 FACILITY DESCRIPTION

JB CHS-AB is located along the southeastern coast of South Carolina, in the City of North Charleston, approximately 10 miles northwest of the City of Charleston, in Charleston County.

The boundaries of the Base encompass approximately 3,772 acres and include facilities for operation, industrial, administrative, supply, and residential functions. A location and topographic map is depicted in Figure 1. Figure 2 provides a map of the storm water drainage basin delineations for both the main Base and the Base housing located in Hunley Park.

Effective October 1, 2010, The Office of the Secretary of Defense and the Base Realignment and Closure (BRAC) committee consolidated Charleston Air Force Base (CAFB) and Naval Weapons Station (NWS) Charleston into a single installation, JB CHS under the command of the Air Force. This SWMP is applicable to the portion of JB CHS formerly known as Charleston

AFB.

The following location information is included in compliance reports required under the SCDHEC General Permit:

Facility Name: Joint Base Charleston – AB 628th Civil Engineer Squadron/CC, USAF

Address: 210 W. Stewart Avenue Joint Base Charleston, SC 29404-4827

County: Charleston Operator Type: Military Base Operator Status: Federal

Contract # FA8903-13-D-0004 TO 0002 1-2

SMS4 Area: 3,772 acres SMS4 Location: Latitude 32° 54’ 54”, Longitude 80° 04’ 12” SWMP Manager: Water Program Manager, Environmental Management Element

(628 CES/CEIE)

Reporting Period: Bi-annual; next report due 1 April 2016

1.2 REGULATORY BACKGROUND

An SMS4 is defined as any MS4 that is not already regulated under the Phase I storm water program. The definition of a SMS4 is not directly dependent on a population threshold but is dependent on population density and other factors. Select subsets of SMS4s are covered by the Phase II rule based upon nationwide designation or on a case-by-case basis. Automatic nationwide coverage includes SMS4s located within the boundaries of a Bureau of Census-delineated “urbanized area” (UA). JB CHS-AB is Federal Property located within a designated UA and therefore is a regulated SMS4.

Under the CWA, the NPDES Program was implemented in a two-phased comprehensive national program to address storm water discharges. Phase I of the program (implemented in 1990) applies to industrial sources, construction activity sources greater than 5 acres, and sources from municipalities serving greater than 100,000 persons. Phase II of the program was implemented in 2003 and focuses on storm water discharges from: 1) SMS4s; and

2) construction activity disturbing any type of area with a storm sewer system (including industrial, residential, and commercial). The U.S. EPA delegated the authority to implement the NPDES Program to States with U.S. EPA-approved water quality criteria. The SCDHEC is responsible for implementing the NPDES program.

In 1998, JB CHS-AB (then known as Charleston AFB) obtained an SCDHEC NPDES Multi-sector General Permit (MSGP) for storm water associated with industrial activity (Phase I permit regulations). To comply with the MSGP, the Base prepared a Storm Water Pollution Prevention Plan (SWPPP). The 1999 Base-wide SWPPP identified areas of industrial activities, locations of industrial storm water discharge (outfalls), and storm water sampling locations. In 2011, the Base developed a new SWPPP to incorporate the requirements of the new NPDES General Permit for Storm Water Discharges Associated with Industrial Activities (IGP) effective January 2011, and revisions to the content and format.

Unlike the IGP, which requires industrial storm water sampling and industrial-related BMPs, the MS4 GP requires development and implementation of a SWMP describing BMPs for pollution prevention/good housekeeping, public involvement/participation, construction/post construction discharge controls and illicit discharge detection.

Contract # FA8903-13-D-0004 TO 0002 1-3

1.3 PHASE II STORM WATER PERMIT REGULATIONS

This SWMP is designed to comply with the following Federal, State, and Department of Defense (DoD) requirements:

♦ Federal guidance under Federal Register, Volume 64, Number 235 and 40 Code of Federal Regulations (CFR) 122.30 through 36 and 40 CFR 122.26

♦ Stormwater Management and Sediment Reduction. Regulation 72-300 ♦ South Carolina Regulation 61-9.122.30 through 36 and 61-9.122.26 ♦ Air Force Instruction (AFI) 32-7041, Water Quality Compliance Program

1.4 SMS4 RESIDENTIAL DRAINAGE AREAS

The SMS4 residential drainage areas at JB CHS-AB are divided into five areas as listed in Table 1-1. Portions of the housing area have undergone redevelopment (de-urbanization). The description of storm water drainage patterns within the SMS4 residential areas are useful in identification of storm water pollution sources that may be detected during regular inspections.

1.5 STORM WATER SYSTEM OVERVIEW

Storm water runoff from the Base SMS4 areas drain to the Ashley River, Popperdam Creek, Filbin Creek, Cooper River, Goose Creek and Turkey Creek. The SCDHEC developed the priority list of waterbodies pursuant to Section 303(d) of the Federal CWA and Federal Regulation 40 CFR 130.7 last revised in 1992. The listing identifies South Carolina waterbodies that do not currently meet State water quality standards after application of required controls for point and nonpoint source pollutants. Use attainment determinations were made using water quality data collected from 2006-2010. Pollution severity and the classified uses of waterbodies were considered in establishing priorities and targets. The list will be used to target waterbodies for further investigation, additional monitoring, and water quality improvement measures, including TMDLs. According to the State of South Carolina Section 303(d) List for 2012 (SCDHEC Bureau of Water, 2012), the Ashley and Cooper Rivers are included on the 303(d) list of waters impacted by urban runoff. Information regarding the Rivers stream segments included on the 303(d) impaired water list is provided in Table 1-2.

A TMDL for Dissolved Oxygen (DO) has been approved for the Ashley River for water quality monitoring stations (WQMS) CSTL-102 and MD-049. Waste Load allocations (WLAs) for specific point source dischargers are in place for Ultimate Oxygen Demand (UOD), which consists of Biological Oxygen Demand (BOD5), Chemical Oxygen Demand (COD5) and Total Kjehldahl Nitrogen (TKN). Further information on the TMDL is provided by SCDHEC at:

http://www.scdhec.gov/Environment/WaterQuality/Stormwater/TechnicalDocuments/.

Information regarding the Rivers stream segments included on the 303(d) TMDL list is provided in Table 1-2.

Contract # FA8903-13-D-0004 TO 0002 1-4

2.0 BEST MANAGEMENT PRACTICES

JB CHS-AB has developed pollutant control techniques and requirements to satisfy water quality criteria and comply with regulations concerning SMS4s. This section describes JB CHS-AB’s compliance measures and BMPs to be implemented for the components of the Phase II regulations applicable to the Base. These compliance measures fulfill the required six MCMs:

♦ MCM 1: Public education and outreach ♦ MCM 2: Public participation/involvement ♦ MCM 3: Illicit discharge detection and elimination ♦ MCM 4: Construction site runoff control ♦ MCM 5: Post-construction runoff control ♦ MCM 6: Pollution prevention/good housekeeping

A copy of MCM requirements per Federal and State regulations are provided in Appendix A.

JB CHS-AB’s compliance with these MCMs and measurable goals for each MCM is described in the following subsections.

2.1 MCM 1: PUBLIC EDUCATION AND OUTREACH

Person Responsible for Public Education and Outreach (MCM 1):

♦ Name: Storm Water Program Manager ♦ Civil Engineering/Environmental Management Element (628 CES/CEIE) ♦ Phone Number: 843-963-1437

Public education and outreach is conducted to inform the community regarding adverse storm water impacts. This MCM is crucial for the success of a storm water management program to ensure greater support and compliance. MCM 1 requires the following:

♦ Implement a public education program by distributing educational materials to the community (residents) or equivalent outreach activities concerning the impacts of storm water discharge to local water bodies and include steps that reduce storm water pollution.

♦ Determine appropriate BMPs and measurable goals for MCM 1.

JB CHS-AB has selected several actions/activities to comply with MCM 1 based upon U.S. EPA guidance. These actions/activities are listed in Table 2-1 and include a schedule for implementation, measurable goals, and documentation/reporting mechanisms. A master schedule for SWMP implementation is provided in Section 3. Year 1 refers to 2014, the year the NOI for continued coverage was submitted to SCDHEC. Some of the actions for MCM 1 are also applicable for MCM 2.

Contract # FA8903-13-D-0004 TO 0002 2-1

The BMPs were selected to target the following audiences at JB CHS-AB:

♦ DoD civilian employees of JB CHS-AB and contractor personnel ♦ Active duty military assigned to JB CHS-AB and their dependents living in base housing

Appendix D contains copies of sample inserts and brochures provided by U.S. EPA that may be used for this MCM. A recordkeeping mechanism for each MCM to facilitate compliance reporting at the end of each 12-month period is provided in Appendix B. Acceptable documentation for reporting includes correspondence (email or other documentation), copies of materials used, number of residents that were reached or participated, and other printed/recorded materials used. This supporting documentation will be maintained with the SWMP and is not required to be included in the annual report to the SCDHEC. Table 2-1 lists the reporting measures that are required for submittal to the SCDHEC in an annual report.

2.2 MCM 2: PUBLIC PARTICIPATION / INVOLVEMENT

Person Responsible for Public Participation/Involvement (MCM 2):

Name: Storm Water Program Manager Civil Engineering/Installation Management (628 CES/CEIE) Phone Number: 843-963-1437

Public participation and involvement can result in valuable input and assistance concerning storm water management. The public should be provided the opportunity to participate in the development and implementation of the program. An active and involved community allows for broader public support, shorter implementation schedules, broader base of expertise and economic benefits, and a conduit to other programs. MCM 2 requires the following:

♦ Comply with applicable State, Tribal, and local public notice requirements ♦ Determine appropriate BMPs and measurable goals for MCM 2

JB CHS-AB has selected several actions/activities to comply with MCM 2 based upon U.S. EPA guidance. These actions/activities are listed in Table 2-2 and include a schedule for implementation, measurable goals, and documentation/reporting mechanisms. A master schedule for SWMP implementation is provided in Section 3. Year 1 refers to 2014, the year the NOI for continued coverage was submitted to the SCDHEC. Some of the actions for MCM 2 are also applicable for MCM 1.

The BMPs were selected to target the following audiences at JB CHS-AB:

♦ DoD civilian employees of JB CHS-AB and contractor personnel ♦ Active duty military assigned to JB CHS-AB and their dependents living in base housing

Contract # FA8903-13-D-0004 TO 0002 2-2

A recordkeeping mechanism for each MCM to facilitate compliance reporting at the end of each 12-month period is provided in Appendix B. Acceptable documentation for reporting includes correspondence (email or other documentation), copies of materials used, number of residents that participated, and other printed/recorded materials used. This supporting documentation should be maintained with the SWMP and is not required to be included in the annual report to the SCDHEC. Table 2-2 lists the reporting measures that are required for submittal to the SCDHEC in an annual report.

2.3 MCM 3: ILLICIT DISCHARGE DETECTION AND ELIMINATION

Person Responsible for Illicit Discharge Detection and Elimination (MCM 3):

Name: Storm Water Program Manager Civil Engineering/Installation Management (628 CES/CEIE) Phone Number: 843-963-1437

Illicit discharges enter the system through direct or indirect connections and could include wastes and wastewater from non-storm water sources. Untreated discharges may contribute pollutants such as toxics, oil and grease, solvents, nutrients, viruses, and bacteria to receiving water bodies.

The Storm Water Phase II SMS4 regulations require development and implementation of an illicit discharge detection and elimination program. MCM 3 requires the following:

♦ A storm sewer system map showing the location of all outfalls and the names and locations of all waters of the United States that receive discharges from those outfalls

♦ Regulatory mechanism to prohibit non-storm water discharges into the SMS4 and appropriate enforcement procedures and actions

♦ Plan to detect and address non-storm water discharges, including illegal dumping, into the

SMS4

♦ Education of employees, businesses, and the general public about the hazards associated with illegal discharges and improper disposal of waste

♦ Determine appropriate BMPs and measurable goals for MCM 3

Allowable non-storm water discharges that require detection and elimination if identified as significant contributors of pollutants to the SMS4 residential areas include water line flushing, landscape irrigation, diverted stream flows, rising ground waters, uncontaminated groundwater infiltration [as defined at 40 CFR 35.2005(20)], uncontaminated pumped groundwater, discharges from potable water sources, foundation drains, air conditioning condensation, irrigation water, springs, water from crawl space pumps, footing drains, lawn watering, individual residential car washing, flows from riparian habitats and wetlands, dechlorinated swimming pool discharges, fire fighting flows, and street wash water.

Contract # FA8903-13-D-0004 TO 0002 2-3

JB CHS-AB has selected several actions/activities to comply with MCM 3 based upon U.S. EPA guidance. These actions/activities are listed in Table 2-3 and include a schedule for implementation, measurable goals, and documentation/reporting mechanisms. A master schedule for SWMP implementation is provided in Section 3. Year 1 refers to 2014, the year the NOI for continued coverage was submitted to the SCDHEC. Educational outreach activities are also conducted under MCM 1 and 2; measurable goals for these activities can be combined with measurable goals for MCM 3.

The BMPs were selected to target the following audiences at JB CHS-AB:

♦ DoD civilian employees of JB CHS-AB and contractor personnel ♦ Active duty military assigned to JB CHS-AB and their dependents living in base housing

A recordkeeping mechanism for each MCM to facilitate compliance reporting at the end of each 12-month period is provided in Appendix B. Acceptable documentation for reporting includes correspondence (email or other documentation), inspection notes, number of residents that participated, and other printed/recorded materials used. This supporting documentation should be maintained with the SWMP and is not required to be included in the annual report to the SCDHEC. Table 2-3 lists the reporting measures that are required for submittal to the SCDHEC in an annual report.

2.3.1 Illicit Discharge Detection Plan

JB CHS-AB has developed the following Plan to detect and address illicit discharges:

♦ Step 1: Locate problem areas – SMS4 priority areas (illicit discharges) will be identified during Year 1. These priority areas will be determined by public complaints/comments, visual screening during dry weather, and outfall location (remote areas and older infrastructure areas). Priority areas will be documented in the SWMP by the end of Year 1 by 628 CES/CEIE staff.

♦ Step 2: Determine the Source – Problem areas or discharges that are identified will be investigated to determine the source. The discharge will be traced upstream and inspection of potential sources will occur. Once sources are identified for problem areas, findings will be documented in the SWMP at the end of Year 2 by 628 CES/CEIE staff.

♦ Step 3: Remove/correct illicit connections – The responsible party for the source of an illicit discharge will be notified and directed to correct the problem. Education efforts will be used prior to enforcement actions. This will occur immediately upon source identification by 628 CES/CEIE staff.

Contract # FA8903-13-D-0004 TO 0002 2-4

♦ Step 4: Document actions taken – All actions taken under this Plan will be documented in the SWMP at the end of each permit year. Documentation will include complaints received and corrected, number of detected discharges and quantity of flow eliminated, and number of inspection evaluations conducted. Illicit discharges will be eliminated when identified.

2.4 MCM 4: CONSTRUCTION SITE RUNOFF CONTROL

Person Responsible for Construction Site Runoff Control (MCM 4):

Name: Storm Water Program Manager Civil Engineering/Installation Management (628 CES/CEIE) Phone Number: 843-963-1437

Storm water runoff from construction sites within SMS4s can discharge to local water bodies.

Construction sites can potentially contribute more sediment (resulting in siltation) in a short period of time than can be deposited naturally over several decades. The MS4 permit requires that construction activities that occur within an SMS4 are subject to a site runoff control program under this SWMP. JB CHS-AB requires that all land disturbing activities are subject to erosion and sediment control BMPs. Construction sites greater than 5 acres are regulated under U.S.

EPA’s Phase I NPDES Program. Requirements under the storm water Phase II program include submission of an NOI and SWPPP. Appendix F provides information concerning construction permitting, inspection, and penalty protocols. MCM 4 requires the following:

♦ An ordinance or other regulatory mechanism requiring the implementation of proper erosion and sediment controls and controls for other wastes

♦ Procedures for site plan review of construction plans that consider potential water quality impacts (Figure 3)

♦ Procedures for site inspections and enforcement of control measures

♦ Sanctions to ensure compliance

♦ Procedures for the receipt and consideration of information submitted by the public (not applicable for the residential area on a military installation)

♦ Determination of the appropriate BMPs and measurable goals for MCM 4

JB CHS-AB has selected several actions/activities to comply with MCM 4 based upon U.S. EPA guidance. These actions/activities are listed in Table 2-4 and include a schedule for implementation, measurable goals, and documentation/reporting mechanisms. A master schedule for SWMP implementation is provided in Section 3. Year 1 refers to 2014, the year the NOI for continued coverage was submitted to the SCDHEC.

Contract # FA8903-13-D-0004 TO 0002 2-5

The BMPs were selected to target the following audiences at JB CHS-AB:

♦ DoD civilian employees of JB CHS-AB and contractor personnel ♦ Active duty military assigned to JB CHS-AB and their dependents living in base housing

A recordkeeping mechanism for each MCM to facilitate compliance reporting at the end of each 12-month period is provided in Appendix B. Acceptable documentation for reporting includes correspondence (email or other documentation), number of construction sites regulated, number of site plans reviewed, and other printed/recorded materials used. This supporting documentation should be maintained with the SWMP and is not required to be included in the annual report to the SCDHEC. Table 2-4 lists the reporting measures that are required for submittal to the SCDHEC in an annual report.

Land disturbance projects on Base which require a permit are placed on public notice through the SCDHEC Ocean and Coastal Resource Management (OCRM). The regulatory mechanism used by JB CHS-AB for erosion prevention and sediment control for construction projects is included in the Joint Base Charleston Environmental Specifications (01501) on Page 6, Paragraph 1.11 and is included in Appendix F.

Enforcement actions are documented by the JB CHS-AB MS4 Program Manager filling out the SCDHEC’s “NPDES Construction Site Inspection” form and attaching them to an email to the construction project manager for immediate corrective action. Immediate corrective action will be initiated for public input and complaints (through the JB CHS-AB Environmental Office).

Problems will be elevated to the Base Commander, if necessary.

2.4.1 Procedures for Land Disturbing Activity

Land Disturbing activities that occur at JB CHS-AB are subject to a site runoff control program under this SWMP. Activities disturbing less than 1 acre are approved by 628 CES/CEIE.

Activities greater than 1 acre receive a coastal zone consistency review by 628 CES/CEIE and a letter signed by the delegated signature authority to be submitted to OCRM SCDHEC for review and permitting. The following steps must be followed for any land disturbing activity:

1) submit an NOI

2) develop and implement a construction SWPPP

3) and submit a Notice of Termination (NOT)

JB CHS-AB’s compliance requirements for land disturbing activity are described below.

Appendix F provides information concerning construction permitting, inspection, and penalty protocols. Section 01501 of the JB CHS-AB Environmental Specifications included in Appendix F, details the compliance requirements. The United Facilities Criteria (UFC) for Low Impact

Contract # FA8903-13-D-0004 TO 0002 2-6

Development is included in Appendix G and should be referenced for any new construction at JB

CHS-AB.

2.4.1.1 Notice of Intent

According to U.S. EPA’s Storm Water Phase II Compliance Assistance Guide, a complete and accurate NOI must be submitted to 628CES/CEIE for approval prior to submission to the SCDHEC (the permitting authority). The NOI will include general information and a certification that the activity will not adversely impact threatened or endangered species as required by the State Permit.

JB CHS-AB will ensure that an NOI is submitted for each land disturbing activity as required under Phase II NPDES regulations. CE Construction conducts oversight for all projects on-Base and will include this requirement in the compliance checklist for each bidder/subcontractor.

2.4.1.2 Site-Specific Storm Water Pollution Prevention Plans (S3WP3s)

According to U.S. EPA’s Storm Water Phase II Compliance Assistance Guide, the most important requirement is the preparation of the S3WP3. The S3WP3 includes BMPs to minimize pollutant discharge from the construction site. At least one construction S3WP3 is required for each project or site. The S3WP3 must be developed prior to submitting the NOI. The S3WP3 is submitted to 628 CES/CEIE with the NOI, run-off calculations, site description, fee for the SCDHEC review, and digital boundary. In addition the S3WP3 should remain on-site and accessible for the duration of the land disturbing activities. The S3WP3 comprises the following elements:

♦ Site description that includes a description of potential pollutant sources and other information

♦ Description of controls (BMPs) that include implementation of erosion and sediment controls, storm water management controls, and other controls

♦ Inspections of disturbed areas, exposed material storage, structural controls, and vehicle entrances and exits

♦ Maintenance of controls (BMPs) to ensure effective operating condition

♦ Signatures by at least one person responsible for submitting an NOI for the project

♦ Accessibility of the S3WP3 at the construction site or other location for the SCDHEC

Contract # FA8903-13-D-0004 TO 0002 2-7

JB CHS-AB will ensure that a S3WP3 is developed for each land disturbing activity as required under Phase II NPDES regulations. Some recommended non-structural BMPs include minimizing disturbance, preserving natural vegetation, and good housekeeping. Some recommended structural BMPs include mulch, grass, stockpile covers, silt fencing, inlet protection, check dams, stabilized construction entrances, and sediment traps.

CE Construction Control Rep (CENMI) conducts oversight for all projects on-Base and will include this requirement in the compliance checklist for each bidder/subcontractor. 628 CES/CEIE will review each S3WP3 for compliance with Phase II rules. This requirement will be implemented based on the tiered approach proposed by the SCDHEC.

2.4.1.3 Notice of Termination

According to U.S. EPA’s Storm Water Phase II Compliance Assistance Guide, a complete NOT must be submitted to the SCDHEC within 30 days of one or more of the following:

♦ Final stabilization is achieved on the site

♦ Another operator/permittee has assumed control over areas not stabilized

♦ Residential construction that is temporarily stabilized (such as a lot) prior to transfer of ownership to the homeowner, with the homeowner being made aware of the need to conduct final stabilization, or

♦ Coverage under an alternative NPDES permit has been obtained

JB CHS-AB will ensure that a NOT is submitted for each land disturbing activity as required under Phase II NPDES regulations. CE Construction conducts oversight for all projects on-Base and will include this requirement in the compliance checklist for each bidder/subcontractor.

2.4.2 Phase II Requirements for Coastal Zone Construction

Construction at the Base with land disturbance of equal to or greater than 1 acre or greater than

0.5 acre and within 0.5 mile of a receiving water body require a NPDES storm water discharge permit before discharging storm water runoff to local water bodies including the Ashley River, Popperdam Creek, Turkey Creek, Goose Creek and Cooper River. Construction activities less than 1 acre are included if they are part of a larger common plan with a planned disturbance of equal to or greater than 1 acre. Projects less than 1 acre and not within 0.5 mile of a receiving water body are not submitted to the SCDHEC-OCRM for Coastal Zone Consistency (CZC) review. OCRM requires a submittal package including, a copy of the NOI, review fee ($125), and CZC screening package, for all construction projects that are:

♦ equal to or greater than 1 acre, ♦ greater than 0.5 acre and within 0.5 mile of a receiving water body, Contract # FA8903-13-D-0004 TO 0002 2-8

♦ between 0 and 0.5 acre and within 0.5 mile of a receiving waterbody, and

• is a commercial building(s) which will handle hazardous chemicals (including gasoline, kerosene, diesel fuel, nutrients, etc.).

• is a residential subdivision development(s) located directly adjacent to a saltwater (critical) area.

• is a project(s) impacting Geographical Areas of Particular Concern.

Contractors/operators are required to submit an S3WP3 and submit an NOI to the Base to comply with the MS4 GP. The 628 CES/CEIE reviews the S3WP3 and the NOI for completeness, accuracy and consistency with the minimum standards and criteria of the South Carolina Stormwater Management and Sediment Reduction Regulation 72-300 and the MS4 GP.

The SCDHEC’s NPDES transition flow chart details for coastal stormwater permitting in MS4 areas (16 March 2012) is included as Appendix H.

Storm water Permitting & CZC Certification guidance is provided at:

https://www.scdhec.gov/Environment/docs/NPDES-CZCTransMS4Areas.pdf

Land disturbance construction permit requirements can be found the following website:

http://www.scdhec.gov/environment/WaterQuality/Stormwater/ConstructionActivities/

2.5 MCM 5: POST-CONSTRUCTION STORM WATER MANAGEMENT IN

NEW DEVELOPMENT / REDEVELOPMENT

Person Responsible for Post-Construction Storm Water Management in New Development/ Redevelopment (MCM 5):

Name: Storm Water Program Manager Civil Engineering/Installation Management (628 CES/CEIE) Phone Number: 843-963-1437

Runoff from residential areas undergoing construction may adversely affect receiving water bodies. Prior planning and design for prevention and minimization of pollutants in post-construction storm water is considered a cost-effective approach to storm water management.

The two major types of impacts from post-construction include increased pollutants in storm water (oil and grease, heavy metals, and nutrients) and increased quantity of storm water during storms due to increased impervious surfaces. MCM 5 requires the following:

♦ Strategies that combine structural and/or non-structural BMPs ♦ Ordinance or other regulatory mechanism requiring implementation of post-construction runoff controls ♦ Adequate long-term operation and maintenance of controls

Contract # FA8903-13-D-0004 TO 0002 2-9 https://www.scdhec.gov/Environment/docs/NPDES-CZCTransMS4Areas.pdf http://www.scdhec.gov/environment/WaterQuality/Stormwater/ConstructionActivities/

♦ Determination of the appropriate BMPs and measurable goals for MCM 5

According to U.S. EPA’s Storm Water Phase II Compliance Assistance Guide, redevelopment refers to alterations of property that changes the “footprint” of a site or building from a disturbance of equal to or greater than 1 acre of land. Activities such as exterior remodeling are not considered redevelopment activities. MCM 5 should be developed, implemented, measured, and reported in coordination with MCM 4.

Current plans for the Base housing area have included de-urbanization of select areas. Hundreds of houses have been removed and the affected areas are not targeted for redevelopment.

JB CHS-AB has selected several actions/activities to comply with MCM 5 based upon U.S. EPA guidance. These actions/activities are listed in Table 2-5 and include a schedule for implementation, measurable goals, and documentation/reporting mechanisms. A master schedule for SWMP implementation is provided in Section 3. Year 1 refers to 2014, the year the NOI for continued coverage was submitted to the SCDHEC.

The BMPs were selected to target the following audiences at JB CHS-AB:

♦ DoD civilian employees of JB CHS-AB and contractor personnel ♦ Active duty military assigned to JB CHS-AB and their dependents living in base housing

A recordkeeping mechanism for each MCM to facilitate compliance reporting at the end of each 12-month period is provided in Appendix B. Acceptable documentation for reporting includes correspondence (email or other documentation), number of post-construction sites regulated, number of BMPs implemented, and other printed/recorded materials used. This supporting documentation should be maintained with the SWMP and is not required to be included in the annual report to the SCDHEC. Table 2-5 lists the reporting measures that are required for submittal to the SCDHEC in an annual report.

2.6 MCM 6: POLLUTION PREVENTION AND GOOD HOUSEKEEPING

Person Responsible for Pollution Prevention and Good Housekeeping (MCM 6):

Name: Storm Water Program Manager Civil Engineering/Installation Management (628 CES/CEIE) Phone Number: 843-963-1437

Pollution prevention and good housekeeping is a key element of the SWMP. This MCM is designed to reduce the amount and type of pollution from municipal operations such as vehicle maintenance. MCM 6 requires the following:

♦ Implement an operation and maintenance program with the ultimate goal of preventing or reducing pollutant runoff to the storm sewer system

Contract # FA8903-13-D-0004 TO 0002 2-10

♦ Include employee training on pollution prevention/good housekeeping techniques and maintenance (including park and open space, fleet and building, new construction and land disturbances, and system wide maintenance)

♦ Determine appropriate BMPs and measurable goals for MCM 6

JB CHS-AB has selected several actions/activities to comply with MCM 6 based upon U.S. EPA guidance. These actions/activities are listed in Table 2-6 and include a schedule for implementation, measurable goals, and documentation/reporting mechanisms. A master schedule for SWMP implementation is provided in Section 3. Year 1 refers to 2014, the year the NOI for continued coverage was submitted to the SCDHEC.

The BMPs were selected to target the following audiences at JB CHS-AB:

♦ DoD civilian employees of JB CHS-AB and contractor personnel ♦ Active duty military assigned to JB CHS-AB and their dependents living in base housing

A recordkeeping mechanism for each MCM to facilitate compliance reporting at the end of each 12-month period is provided in Appendix B. Acceptable documentation for reporting includes correspondence (email or other documentation), records of maintenance activities, number of staff trained, and other printed/recorded materials used. This supporting documentation should be maintained with the SWMP and is not required to be included in the annual report to the SCDHEC. Table 2-6 lists the reporting measures that are required for submittal to the SCDHEC in an annual report.

Current storm sewer operations and maintenance program practices are documented below.

♦ Storm Sewer Operations and Maintenance Program:

• Storm sewer ditches and other areas are inspected (operational checks) during heavy rainfall events by the 628 CES/CEOHP. Stormwater drainage open ditch systems are managed and maintained by 628 CES/CEOHP and the Grounds Maintenance Contractor (GMC). Culverts and piped components are contracted for maintenance and repair.

Ditches are weeded and trash removed on an as-needed basis, and main concrete ditches are cleaned and cleared twice a year by the GMC.

• Storm sewer inlets are inspected weekly by 628 CES/CEOHP for debris and other illicit discharges.

• Common area maintenance is conducted by the GMC and includes mowing and trash, leaf, and limb removal.

• Recycling drop-off points are inspected and debris removed by 628 CES/CEOHP on a daily basis.

Contract # FA8903-13-D-0004 TO 0002 2-11

• Litter patrol is conducted daily on-Base by the GMC.

• Lawn and garden debris is picked up weekly by the GMC in the residential area.

♦ Waste Disposal and Street Sweeping Program:

• Debris collected by 628 CES/CEOHP, targeted personnel and the GMC from storm sewer areas on-Base is collected in dumpsters for proper disposal off-Base. Disposal is the management approach for wastes that cannot be reduced, reused or recycled.

Unusable solid waste generated by JB CHS-AB is typically disposed of off-Base by contract. The Contractor tracks the amounts municipal solid waste transported to land fill for disposal. It is estimated that 40% of the debris collected is from the residential area.

• Street sweeping is conducted as needed and debris is segregated for disposal by contract.

Contract # FA8903-13-D-0004 TO 0002 2-12

3.0 MONITORING, RECORDKEEPING AND REPORTING

3.1 MONITORING

As part of this SWMP, JB CHS-AB is required to evaluate the program compliance, the appropriateness of the BMPs identified in Section 2.0 and progress toward achieving measureable goals. Monitoring of storm water outfalls at JB CHS-AB will comply with the following:

♦ Representative Monitoring: Samples and measurements taken for the purpose of monitoring shall be representative of the monitored activity.

♦ Test procedures: Monitoring results must be conducted according to test procedures approved 40 CFR part 136.

3.1.1 TMDL Monitoring

A TMDL for DO has been state approved (pending U.S. EPA approval) for the Ashley and Cooper Rivers for WQMS CSTL-102 and MD-049. Waste Load allocations (WLAs) for specific point source dischargers are in place for Ultimate Oxygen Demand (UOD), which consists of Biological Oxygen Demand (BOD5), Chemical Oxygen Demand (COD5) and Total Kjehldahl Nitrogen (TKN). The TMDL has been implemented through limits placed on the NPDES permits of point source dischargers. Non-point sources are not addressed in the TMDL and will be addressed through the NPDES storm water permitting program and the State Stormwater Management and Reduction Act, the SC Non-point Source Management Plan and other programs. As a result, there is no additional monitoring required under Section 3.1.3.6.

3.2 RECORDKEEPING

Records of monitoring conducted in accordance with Section 3.1 shall include the following information:

♦ Date, place and time of sampling or measurements ♦ Name(s) of the personnel performing the sampling or measurements ♦ Dates that the analyses were performed ♦ Name(s) of the personnel who performed the analyses ♦ Analytical techniques or methods used ♦ Results of the analyses

JB CHS-AB will retain the following types of records for at least 3 years, or for the term of the permit, whichever is longer:

♦ Calibration and maintenance records ♦ Copies of annual reports

Contract # FA8903-13-D-0004 TO 0002 3-1

♦ If applicable, copies of Discharge Monitoring Reports ♦ NPDES permit ♦ All data used to complete NOI application for this permit ♦ Implementation schedule of storm water activities for the next reporting cycle ♦ Proposed changes to the SWMP (including any changes to any BMPs or measurable goals

In addition, the records, including the NOI or application and the SWMP will be made available to the public if requested in writing.

3.3 ANNUAL REPORT

The suggested annual report is due April 1 of each year of the permit, although only bi-annual reports are required by the SCDHEC. The first required report is due in 2016. The report will include the following information:

♦ Status of compliance with permit conditions ♦ Appropriateness of identified BMPs ♦ Progress toward reducing discharge of pollutants to the maximum extent practicable ♦ Measurable goals for each of the MCMs ♦ Results of monitoring data ♦ Implementation schedule of storm water activities for the next reporting cycle ♦ Proposed changes to the SWMP (including any changes to any BMPs or measurable goals ♦ If applicable, notice of reliance on another entity to satisfy some of your permit requirements

In addition, an updated storm sewer map must be submitted with each annual report. The annual reports will be sent to the following address: SCDHEC Bureau of Water, Storm Water Compliance Manager, 2600 Bull Street, Columbia, SC 29201-1708.

3.4 REVIEWING AND UPDATING STORM WATER MANAGEMENT PLANS

An annual review of the Storm Water Management Plans will be conducted whether or not an annual report is filed. Changes to SWMPs adding (but not subtracting or replacing) components, controls, or requirements to the SWMP are able to be made at any time upon written notification from the SCDHEC.

Proposed changes to replace an ineffective or infeasible BMP are able to be submitted to the SCDHEC with the following information: analysis of why the BMP is ineffective or infeasible;

expectations on the effectiveness of the replacement BMP; and an analysis of why the replacement BMP is expected to achieve the goals of the BMP to be replaced. Change requests must be made in writing and signed in accordance with permit requirements.

Contract # FA8903-13-D-0004 TO 0002 3-2

4.0 REFERENCES

JB CHS-AB Storm Water Management Plan ( March 2011) and associated maps

JB CHS-AB Storm Water Pollution Prevention Plan (January 2011) and associated maps

U.S. EPA MS4 Permit Improvement Guide (April 2010)

U.S. EPA National Menu of Best Management Practices for Phase II MS4s (April 2012)

South Carolina NPDES General Permit for Stormwater Discharges from Regulated Small Municipal Separate Storm Sewer Systems (MS4 GP) # SCR030000 (January 2014)

South Carolina Regulation 72-300

SC DHEC Total Maximum Daily Load Revision for Charleston Harbor, Cooper, Ashley and Wando Rivers: Dissolved Oxygen (March 2013)

State of South Carolina Section 303(d) List of Impaired Water for 2012 (SCDHEC Bureau of Water, May 2012)

Contract # FA8903-13-D-0004 TO 0002 4-1

TABLES

Contract # FA8903-13-D-0004 TO 0002 Tables

Table 1-1. JB CHS-AB SMS4 Residential Drainage Areas

MS4 Drainage Area

Total Area* (acres)

Impervious Area (%)

Outfall Designation

Receiving Surface Water Body

8 66 7 008 or MS4-A Popperdam Creek

9 56 37 009 or MS4-B Ashley River

10 24 43 010 or MS4-C Ashley River

4 64 14 004 or MS4-D Ashley River

11 50 17 011 or MS4-E Ashley River

* Total Area of the…