General Permit for the Discharge of Stormwater from Small Municipal Separate Storm Sewer Systems (MS4)

Stormwater Management Plan 2015 Annual Report

Town of Enfield Enfield, Connecticut

May 2016

146 Hartford Road Manchester, Connecticut 06040

Table of Contents

Stormwater Management Plan 2015 Annual Report Town of Enfield

1 Introduction ...... 1

2 Public Education and Outreach on Stormwater Impacts ...... 2 2.1 Staff and Property Owner Education ...... 2 2.2 Storm Drain Stenciling ...... 4 2.3 Watercourse Signs ...... 4 2.4 Plan Modifications ...... 4 2.5 Future Activities ...... 4

3 Public Involvement and Participation...... 4 3.1 Community (Riverbank) Clean-Ups ...... 5 3.2 Recreational Water Resource Events ...... 5 3.3 Plan Modifications ...... 6 3.4 Future Activities ...... 6

4 Illicit Discharge Detection and Elimination ...... 6 4.1 Identification of Illicit Discharge Sources ...... 7 4.1.1 Mapping of Outfalls ...... 7 4.2 Recycling Program ...... 7 4.3 Plan Modifications ...... 8 4.4 Future Activities ...... 8

5 Construction Site Stormwater Runoff Controls ...... 8 5.1 Ordinance/Regulatory Mechanisms ...... 8 5.2 Inspection Program ...... 10 5.3 Plan Modifications ...... 10 5.4 Future Activities ...... 10

6 Post Construction Stormwater Management ...... 11 6.1 Post Construction Stormwater BMPs ...... 11 6.2 Plan Modifications ...... 12 6.3 Future Activities ...... 12

7 Pollution Prevention and Good Housekeeping ...... 12 7.1 Information Management System ...... 12 7.2 Maintenance Schedule ...... 13 7.3 Plan Modifications ...... 13 7.4 Future Activities ...... 14

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Table of Contents

Stormwater Management Plan 2015 Annual Report Town of Enfield

8 Outfall Monitoring ...... 14 8.1 Sampling of Representative Outfalls ...... 14 8.2 Other Water Quality Data Collection ...... 15

Appendices End of Report

Appendix A MS4 General Permit Registration Appendix B Public Education and Outreach on Stormwater Impacts Appendix C Public Involvement and Participation Appendix D Illicit Discharge Detection and Elimination Appendix E Construction Site Stormwater Runoff Controls Appendix F Post-Construction Stormwater Management Appendix G Pollution Prevention and Good Housekeeping for Municipal Operations Appendix H Outfall Monitoring

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1 Introduction

The U.S. Environmental Protection Agency (USEPA) promulgated Phase II of its National Pollution Discharge Elimination System (NPDES) stormwater regulations on December 8, 1999. Phase I of the USEPA stormwater program established regulations for stormwater discharges from municipal separate storm sewer systems (MS4s) in municipalities with populations of 100,000 or greater, construction activities disturbing five or more acres of land, and ten categories of industrial facilities. The Phase II Final Rule expands the Phase I program by requiring smaller communities with MS4s in urbanized areas to implement programs and practices to control polluted stormwater runoff through the use of NPDES permits.

The Town of Enfield is one of approximately 130 municipalities in Connecticut that are located either completely or partially within an urbanized area. These communities were mandated to seek permit coverage with the Connecticut Department of Energy and Environmental Protection’s (CT DEEP) Phase II Stormwater Program. CT DEEP issued the final General Permit for the Discharge of Stormwater from Small Municipal Separate Storm Sewer Systems (MS4 General Permit) on January 9, 2004. The permit was reissued without changes on January 9, 2009 and again on January 12, 2016 and is set to expire on June 30, 2017 (Appendix A). No re-registration is required. CT DEEP indicates permittees must continue implementing their Stormwater Management Plan, conduct annual sampling and submit their annual reports. A new modified MS4 General Permit was issued and will become effective July 1, 2017.

Compliance with the 2004 MS4 permit was a two-part process. The first part (Part A – General Permit Registration) was the submission of a registration form including primarily administrative information and basic mapping. The CT DEEP issued the Town of Enfield a General Permit for Stormwater – Small Municipal Separate Storm Sewer Systems (General Permit) (#GSM000086) on April 26, 2004. A copy of the General Permit registration certificate is included as Appendix A.

The second part of the process is the submission of a Stormwater Management Plan (SWMP). The Town of Enfield submitted the initial SWMP to the CT DEEP, ‘Town of Enfield - MS4 General Permit Annual Report for CY 2005,’ on April 18, 2006. The 2006 SWMP Report described the program elements and their status regarding compliance with the six Minimum Control Measures outlined in the MS4 General Permit. The six Minimum Control Measures include:

• Public Education and Outreach on Stormwater Impacts • Public Involvement/Participation • Illicit Discharge Detection and Elimination • Construction Site Stormwater Runoff Controls • Post-Construction Stormwater Management in New Development and Redevelopment • Pollution Prevention/Good Housekeeping for Municipal Operations

This Annual Report for the 2015 calendar year, outlines the status of compliance with the MS4 General Permit, provides an assessment of the appropriateness of the previously identified best management practices and the Town’s progress towards achieving the implementation dates and measurable goals of each Minimum Control Measure as identified in the 2006 Initial SWMP Report. In addition, the Annual

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Report provides results of monitoring data collected and analyzed during the reporting period, summarizes stormwater activities the Town plans to undertake during the next reporting cycle, and outlines any changes to previously identified measurable goals or implementation dates that apply to the program elements.

The Town of Enfield will continue to implement the SWMP program elements according to the requirements of the MS4 General Permit until it expires and replaced by the new, modified MS4 General Permit.

Implementation of the six Minimum Control Measures to take steps in keeping the stormwater entering its storm sewer system clean before that stormwater enters water bodies is described in the following sections.

2 Public Education and Outreach on Stormwater Impacts

An informed and knowledgeable community is crucial to the success of a stormwater management program as it provides support for the program through volunteers and donors with an understanding of why the program is important and necessary. In addition, there will be greater compliance with the program as the public becomes more aware of their own personal responsibilities and those expected of the community to protect and improve area waters.

2.1 Staff and Property Owner Education

The Town of Enfield continues to implement ongoing public education outreach programs on stormwater impacts using a variety of approaches. The Town, in partnership with other governmental agencies, businesses, concerned citizens, and community organizations such as the Enfield Conservation Commission (ECC), the Enfield Planning Department, and the Enfield Inland Wetland Agency, has completed the following public education and outreach efforts: • Hosting boating and hiking trips along the Scantic River to increase public awareness of encroachment, escarpment, erosion, and macro invertebrates (The Scantic River Watershed Association). • Education of residents on the significance of riparian (the area of land located immediately adjacent to streams, lakes, or other surface waters) buffer conditions with use of mapping and zoning regulations (Enfield Conservation Commission/Plan of Conservation and Development). • Distribution of an information pamphlet on invasive plant species to help identify, avoid and/or eradicate (Enfield Conservation Commission). • Exploration of the Trout Unlimited Youth Program participation options, for opportunities to learn about trout and the marine environment both in and out of the classroom (Enfield Conservation Commission).

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• Promotion of organic pesticide use (available through publications and announcement from the National Gardening Association) as they are less harmful to the environment (Enfield Conservation Commission). • Two publications promoting the protection of watercourses are available on the Town of Enfield Planning and Zoning website and presented in Appendix B, as follows:

o Wetlands and Watercourse Presentation o Terrace Escarpment Slopes Presentation • Educational PowerPoint presentations developed and on two topics; “Terrace Escarpment Slopes” and “Wetlands and Watercourses” are available to Town of Enfield residents to inform on protection of their property and the environment (Town of Enfield Planning & Zoning Commission). • Publication titled, “Your Guide to the Scantic River” with information on canoeing, fishing, hiking, birding and history in the multi-use, non-motorized, trail systems and waterways of Scantic River Greenway (www.scanticriverwatershed.org) available for purchase in Enfield business locations. • Media available on the significance of the Scantic River including a short film about the Scantic River, slide shows with pictures of the watershed, and trails and pictures of wild flowers native to the area and the watershed (Scantic River Watershed Association - http://www.srwa.org/media.shtml). • Wastewater Treatment Application Day recognized by the Town of Enfield Mayor on May 22, 2013, to coincide with national Public Works Week to recognize the efforts of the Town of Enfield Water Pollution Control Division in their constant efforts to provide safe, clean and sustainable water resources (Appendix B: Wastewater Treatment Application Day Proclamation). • The Town of Enfield Water Pollution Control Division shared the ‘2014 Citizen Academy Presentation’ describing the Enfield Water Pollution Control Facility (WPCF) and its wastewater collection system (Appendix B – web site page). In addition, the Enfield WPCF improvement needs were assessed and summarized in a recent study funded by a CT DEEP grant for facilities planning over the next 20 years. More specifically, a sewer piping relining project for 2014 – 2015 is presented as the first in a series of improvement projects. (Appendix B – PowerPoint presentation) • Town hosted Earth Day events on April 22, 2012 and April 26, 2013 (the 3rd and 4th annual, respectively) which drew Enfield residents outdoors to raise awareness of the local environment and environmental issues. In 2014 the Enfield Conservation Commission participated in the Earth Day event at Freshwater Pond and distributed pamphlets on invasives, information cards, to children on salamanders (for “the Year of the Salamander”) and spoke about the natural resources in Enfield and how to protect them. (Town of Enfield Public Works Department News Releases and Enfield Conservation Commission). The Town had their 6th annual Earth Day celebration on April 22, 2015 at Freshwater Pond. Activities included free compost, tomato plants, and flowers, information about energy saving products and services, and teaching children how to plant.

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2.2 Storm Drain Stenciling The Town of Enfield Engineering Department established requirements in the roadway specifications to have Contractors apply a storm drain marker, “No Dumping – Drains to River” logo (Appendix B) on the tops of catch basins which are new, replaced or reset (effective in 2013). Previous programmatic events were also coordinated with the Boy Scout Organization to apply stencil applications to catch basins (Enfield Conservation Commission). Additionally, guidance on catch basin stenciling and organizing a stenciling volunteer event is available from the Connecticut River Watershed Council.

2.3 Watercourse Signs The Enfield Highway and Maintenance Division will consider installing watercourse name signs at road crossings in accordance with State of Connecticut Signage Standards. Watercourse identification signage would help to increase public awareness of brooks, streams, and rivers in the Town of Enfield.

2.4 Plan Modifications No changes are proposed to the Stormwater Management Plan (SWMP) relative to public education and outreach on stormwater impact activities.

2.5 Future Activities Future public education and outreach on stormwater impact activities include:

• Continued support of community environmental groups, activities, and programs with in-kind services and funding, if available. • Supplementing the ‘2014 Citizen Academy Presentation’ public education component regarding the Town of Enfield Water Pollution Control Facility (WPCF) upgrade plan’s sanitary discharge improvements as a result of on-going and future projects. • Providing website links for access to the Town of Enfield Annual Reports of the Stormwater Management Plan status, as well as other water quality related information. • Ongoing efforts to work with individuals and organizations on the Department of Public Works storm drain stenciling program to replace missing markers and install new markers. • Informing Town staff of CT DEEP’s Charitable Car Wash Guidance (Appendix B), when considering a request from the public for a charitable car wash event, to minimize potential water quality impacts.

3 Public Involvement and Participation

In 2005, the Town of Enfield implemented Best Management Practices (BMPs) to encourage the involvement of the public in stormwater management activities and increase the participation of volunteers in projects that directly impact water quality in the MS4 regulated area.

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3.1 Community (Riverbank) Clean- Ups The following community (riverbank) clean-up public participation activities were conducted in Enfield in the past four years: • The annual ‘Source to Sea Cleanup’ is held in the fall with a one-day riverbank clean-up event, hosted by The Scantic River Watershed Association, focused on the Connecticut River stream banks and also targeting areas along the Scantic River, Freshwater Brook and Freshwater Pond in Enfield. The September 29, 2012 event registered 32 adults and 10 children Enfield resident volunteers; with 1.33 tons of trash collected within the watershed. The October 5, 2013 event registered 20 adults and 8 children Enfield resident volunteers, with 2.59 tons of trash collected within the watershed. In September 27, 2014 the event registered 37 adults and 10 children Enfield resident volunteers, with 2.58 tons of trash and 2 tipper barrels of recyclables collected within the watershed. The 2014 event marked the 15th year the Town of Enfield participated in the multi-state event. This annual event has tracked over 100 tons of trash removed from Town of Enfield watersheds since the program inception (Connecticut River Watershed Council and Town of Enfield Conservation Commission). On September 26, 2015, The Scantic River Watershed Association in conjunction with the Enfield Conservation Commission had Enfield residents participate in the Source to Sea Cleanup in Enfield. • The Annual Scantic River clean-up was held on Sunday, August 2, 2015, at the Scantic Rapids State Park to remove refuse from the riverbanks to purge the site of river waste. A total of 980 pounds of trash was collected during this event. Callouts for volunteers were posted on the Scantic River Watershed Association (SCWA) Facebook page (https://www.facebook.com/SRWA.org ) (Enfield Beautification Committee and the Scantic River Watershed Association)

3.2 Recreational Water Resource Events

Events are hosted to increase public awareness of recreational uses of a watershed, noting physical features of the stream, bank erosion and or potential sources of pollution. Recreational water use is enjoyed most when there is no negative physical or environmental impact from manmade conditions. A few of the watershed recreational events held in the past four years include the following:

• Scantic River Spring Splash – Canoe and Kayak Race annual event hosted by the Scantic River Watershed Association (SCWA). In March 2012, the spring splash hosted 133 registrants in 96 boats with a donation of 279 pounds of food and $300 donated from the races to the Enfield food shelf. In March of 2013, the Spring Splash hosted over 180 paddlers. As a result of this event, $1,000 was donated to both the Enfield Food Shelf and the Scantic River Watershed Association. On May 4, 2014, the Scantic Spring Splash, the 23rd Annual Race, proved to be another successful event. The 24th Annual Scantic River Spring Splash was held on March 28, 2015.(Scantic River Watershed Association - http://www.scanticspringsplash.org/ )

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• Historical and nature hikes – Hikes were organized and held in June 2013, June 2014, and June 2015 as part of Connecticut Trails Day to increase awareness of the hiking trails, erosion, and biota in the area. (Hosted by the Scantic River Watershed Association) • Full Moon Paddles - Paddling events were organized in July 2013, June 2014, and August 2015 along the Scantic River, from the Mill Pond, to increase public use of the river and awareness of erosion and escarpment. (Hosted by the Scantic River Watershed Association) • Enhancement of the Scantic River Linear Park – Review, approval and construction of a bog bridge on Scantic East Trail was completed by Sam Wentworth for his Eagle Scout Project, to increase usage of the property and promote conservation. (Scantic River Watershed Association – September 5, 2013 announcement) • Scantic River Linear State Park – River South Trail opened June 2nd, 2012 with a 2 ½ mile loop along the river for walkers and mountain bike use as an expansion to River North Trail opened earlier. (Appendix C – Hartford Courant Article), ( Scantic River Watershed Association http://www.srwa.org/releases/2012AugCurrentsWeb.pdf )

3.3 Plan Modifications No changes are proposed to the Stormwater Management Plan (SWMP) relative to public involvement and participation activities.

3.4 Future Activities

The Town of Enfield will continue to promote public involvement and participation in the town of Enfield sponsored activities by partnering with governmental agencies, businesses, and community groups to support environmental public involvement and participation events. The Town of Enfield provides event sponsorship and resources to conduct riverbanks and waterway clean-up projects and manage collected materials.

Continue collaboration with the local newspaper in order to publish future environmental/pollution prevention articles (including the annual Enfield Scantic Riverbank Walk/Cleanup).

4 Illicit Discharge Detection and Elimination

Illicit discharges are any unpermitted discharge to waters of the state that does not consist entirely of stormwater or uncontaminated groundwater. Illicit discharges can contribute high levels of pollutants (including heavy metals, toxins, oil and grease, solvents, nutrients, viruses, and bacteria) to receiving water bodies either directly or indirectly. Identifying and eliminating illicit discharges and encouraging recycling can significantly improve water quality.

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4.1 Identification of Illicit Discharge Sources

The Town of Enfield uses a variety of resources to identify illicit discharges and eliminate them as applicable.

4.1.1 Mapping of Outfalls

The Town of Enfield utilizes mapping to assist with identification of potential pollution sources and illicit discharges. The Drainage Area and Outfall Map depict the storm drainage outlets for the stormwater systems in each watershed (Appendix D). Each drainage outlet is labeled by the watershed it resides in and is numbered. The total number of outlets identified in each watershed is summarized in the table below. Number of Storm Watershed Drainage Outlets Beemans Brook 33 Bowyens Brook 3 Buckhorm Brook 16 Freshwater Brook 20 Grape Brook 14 Jawbuck Brook 11 Rustic Brook 4 Scantic River 34 Terry Brook 9 Waterworks Brook 12 Total 156

The town of Enfield Highway Division conducts maintenance of stormwater collection and outfalls as needed.

4.2 Recycling Program

The Town of Enfield has established recycling programs for the collection of motor oil and automotive batteries, as well as household hazardous waste, to encourage proper disposal of these items. These collections supplement the already successful single stream recycling program (Appendix D) for Town of Enfield residences, businesses and institutions with collections of approximately 300 tons per month (USA Recycling Tonnage Reports). In 2014, Enfield residents contributed 3,831.23 tons of recycled goods. (Town of Enfield, Department of Public Works, Division of Resource and Refuse Management)

The Town of Enfield has sponsored single-day Household Hazardous Waste Collection (HAM) events (Appendix D). On May 12, 2012 the event data indicates Enfield residents participated with 354 vehicle drop-offs of hazardous waste for a total of 608 households of hazardous waste (one household equals 20 pounds or 15 gallons of hazardous waste). Participation in June 2013 consisted of 613 vehicle drop offs with 796 households of hazardous waste. Participation in the May 10 and October 25, 2014 events consisted of 298 cars brought in for shredding (163 in the spring and 135 in the fall) and hazardous

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waste drop offs by 534 cars-714 units (305 cars-384 units in the spring and 229 cars-330 units in the fall). Residents participated in the 2015 annual Household Hazardous Waste Collection on October 24, 2015 with similar results to previous years.

In addition, through its resident drop-off program, the Town of Enfield collected and recycled 2,048 gallons of waste oil and 151 batteries in CY 2012 through its resident drop-off program. CY 2013 had 2,307 gallons of waste oil and 90 batteries collected and recycled from Town residents. CY 2014 had 1,881 gallons of waste oil and 74 batteries collected and recycled from Town residents. CY 2015 waste oil and battery collections and recycling were similar to previous years (Town of Enfield, Department of Public Works, Division of Resource and Refuse Management).

4.3 Plan Modifications No changes are proposed to the Stormwater Management Plan (SWMP) relative to illicit discharge detection and elimination activities.

4.4 Future Activities The Town of Enfield will continue to address maintenance of stormwater conveyance systems and address results of water quality concern. In addition, the Town of Enfield will continue to support recycling and household hazardous waste collection programs and notify the public with event information in order to encourage participation and maintain legal discharges and proper waste disposal.

5 Construction Site Stormwater Runoff Controls

Polluted stormwater runoff from construction sites often flows into local rivers and streams. The silt and pollutants associated with this runoff can cause physical, chemical, and biological harm to the Town of Enfield waters. Through controlling this discharge, the Town of Enfield will limit the effects of construction site runoff on water quality.

5.1 Ordinance/Regulatory Mechanisms Polluted runoff from construction sites is regulated through the Town of Enfield land use regulations, policy, and various boards and departments. The Town of Enfield Planning and Zoning Department web site page (Appendix E) includes a listing of documents related to development consideration, wetlands and zoning regulations. The Town of Enfield’s 2011 Plan of Conservation and Development with sixteen sections is also accessible on-line (Appendix E) for use as guidance in reviewing and managing proposed construction projects which disturb the land surface.

A partial list of Town Enfield programs and regulations which support the review and approval of construction projects is as follows:

• Zoning Regulations - Amended to - 12/10/2015 • Enfield Inland Wetlands and Watercourse Regulations - March 2011

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• Adopted Aquifer Protection Regulations – January 2008

The Town of Enfield “Conservation Commission” is responsible for the development, conservation, supervision, and regulation of the Town's natural resources. The Commission reviews development applications that may have significant impact to environmentally sensitive areas. The Commission serves as an advisory board to the Planning and Zoning commission in this capacity. The Commission also supports and co-sponsors activities that accomplish ecological objectives. The five goal categories of the Enfield Conservation Commission are listed on the Enfield web site page (Appendix E).

Implementation of the Connecticut Aquifer Protection Area Program (APA Program) to approve regulated activities in the Aquifer Protection Area is addressed by town boards and commissions as cited in the ‘Aquifer Protection Information’ Town of Enfield web page (Appendix E). The Town of Enfield utilizes the APA Program to evaluate and make decisions about land use activities or to implement regulations that promote acceptable groundwater quality:

“Aquifers are an essential natural resource and a major source of public drinking water for the State of Connecticut. Protection requires coordinated responsibilities shared by the state, municipality, community, and water companies to ensure a plentiful supply of public drinking water for present and future generations. It is therefore the purpose of these regulations to establish aquifer protection areas within the Town of Enfield by educating the public and making provisions for implementing regulations, delineating aquifer protection areas on the city/town zoning or inland wetland and watercourse areas maps, and regulating land use activity within the aquifer protection areas.”

Town of Enfield site development regulations address soil erosion and sediment control (SEC) and proper drainage. The Town of Enfield Site Plan Application includes requirements for site improvements designed and constructed to the standards of the Town’s Technical Subdivision Regulations, with inclusion of:

• Soil erosion and sedimentation control measures as required by Section 7.20 of the Enfield Zoning Regulations; • Drainage design for roof area, parking lot and driveways consistent with Section 7.10.11 of the Enfield Zoning Regulations Zoning Regulations (revised to 12.10.2015), Sections 7.20.1 – 7.20 .7 describes ‘Activities Requiring a Certified Soil Erosion and Sedimentation Control Plan’:

“A soil erosion and sediment control plan shall be submitted with any application for development when the disturbed area of such development is cumulatively more than one-half (½) acre. To be eligible for certification, a soil erosion and sediment control plan shall contain proper provisions to adequately control accelerated erosion and sedimentation and reduce the danger from stormwater runoff on a proposed site based on the best available technology. The estimated costs of measures required to control soil erosion and sedimentation, as specified in the certified plan, shall be covered by a completion bond or other assurance acceptable to the Commission and the Director of Finance. Inspections shall be made by the Director of the Department of Public Works

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during development to ensure compliance with the certified plan and that control measures and facilities are properly performed or installed and maintained.”

Town staff reviews applications for completeness and compliance and provide comments on proposed plans. These include compliance with regulations related to land use, engineering, utilities, stormwater and sediment control, wetland impact & mitigation, and tree preservation. The Community is encouraged to attend public meetings held by the boards and or commissions, ask questions, and express opinions. Meeting schedules, agendas and minutes for Enfield Boards and Commissions are made available online http://www.enfield-ct.gov and are posted at the Enfield Town Hall.

5.2 Inspection Program

The Town of Enfield conducts inspections of construction projects for compliance with local land use regulations. Various Town of Enfield Departments have representation available to conduct inspections and perform follow up actions as necessary if violations of regulations are found:

• Building Department – Building Compliance Inspectors • Planning and Zoning Department – Zoning Enforcement Supervisor • Inland Wetlands & Watercourses Agency - Zoning Enforcement Supervisor • Engineering Department – Assistant Town Engineer

The Town of Enfield Planning and Zoning Department states it's mission as follows: “To help insure the health, safety and welfare of the people of Enfield and to provide a better quality of life through high professional standards of planning, community development and enforcement services.”

The Town of Enfield Inland Wetlands & Watercourses Agency states it's duties as follows: “…carrying out and effectuating … the importance of protecting and preserving these features (inland wetlands & watercourses) in the public interest, for the health, welfare and safety of the citizens of the state. Further, they are responsible for regulating and permitting surface disturbance activities in regulated upland review areas of wetlands and watercourses as stated on the web site page (Appendix E).

5.3 Plan Modifications No changes are proposed to the Stormwater Management Plan (SWMP) relative to construction site stormwater runoff controls.

5.4 Future Activities The Town of Enfield continues to review proposed site development projects to ensure compliance with the regulations governed by Enfield’s land use boards and commissions. Recently planning and process workshops have been held to address procedural changes and processes, including step-by-step procedures and checklist for proposed construction projects review and implementation. In addition, the Town of Enfield maintains its regulations to be current with State of Connecticut requirements.

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6 Post Construction Stormwater Management

Post construction stormwater management in areas undergoing new development or redevelopment is necessary because runoff from these areas has been shown to significantly affect receiving water bodies if left unchecked. The most cost-effective approach to stormwater quality management involves planning and design to minimize pollutants in stormwater runoff. Ordinances or other regulatory mechanisms for development and implementation of structural and/or non-structural best management practice may be utilized to assure adequate long-term operation and maintenance of controls.

6.1 Post Construction Stormwater BMPs The Town of Enfield has regulations in place requiring Best Management Practices (BMPs) when managing runoff from completed construction projects. With these BMPs in place, the town is effectively limiting the discharge of pollutants into the environment and its water ways. The Best Management Practices for post construction stormwater management are found in Town of Enfield regulatory references as follows:

Aquifer Protection Area (APA) Regulations (2008): “The development and implementation of a stormwater management plan required for regulated activities in accordance with sections 8(c) and 9(d) of the APA Regulations, shall be as follows: A stormwater management plan shall assure that stormwater run-off generated by the subject regulated activity is (i) managed in a manner so as to prevent pollution of ground water, and (ii) shall comply with all of the requirements for the General Permit of the Discharge of Stormwater associated with a Commercial Activity (http://www.enfield-ct.gov/DocumentCenter/Home/View/221)

Plan of Conservation and Development (2011): At the state level, all construction sites disturbing more than one acre, many industrial sites, and all designated Municipal Separate Storm Sewer Systems (MS4s) are required to obtain and meet the requirements of NPDES permit coverage. In Enfield, a developer or contractor must also obtain a permit directly from CTDEEP for the discharge of stormwater – the Town does not issue this permit. Connecticut’s stormwater program is closely modeled after the federal NPDES program, which requires stormwater be treated to the maximum extent practicable. Best management practices (BMP’) must also be designed to remove 80% of the total suspended solids load. The CTDEEP publishes the Connecticut Stormwater Quality and the Connecticut Guidelines for Soil Erosion and Sediment Control; both are available online at http://www.ct.gov/dep/. The 2011 Plan of Conservation & Development is available online at http://www.enfield-ct.gov/166/2011-Plan-of-Conservation-Development.

Enfield Inland Wetland and Watercourse Regulations (2011): All activities in wetlands or watercourses involving filling, excavating, dredging, clear cutting, clearing, or grading or any other alteration or use of a wetland or watercourse not specifically permitted by this section and otherwise defined as a regulated activity by these regulations shall require a permit from the Inland Wetlands and Watercourses Agency of the Town of Enfield (http://www.enfield- ct.gov/DocumentCenter/Home/View/236)

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Plans for proposed stormwater control structures to be installed, operated and maintained are submitted to the Town as part of a site plan application submittal for review and approval.

6.2 Plan Modifications No changes are proposed to the Stormwater Management Plan (SWMP) relative to post construction stormwater management activities.

6.3 Future Activities The Town of Enfield continues to review proposed development projects to ensure compliance with the regulations governed by Enfield’s land use boards and commissions. Recently, “Planning and Process Workshops” have been held to address procedural changes and processes, including step-by-step procedures and checklists for proposed construction project reviews and implementation. In addition, the Town of Enfield maintains its regulations to be current with State of Connecticut requirements.

Various options for runoff controls were recently investigated for implementation feasibility, including rain gardens, oil/water separators, bio-retention systems, deep sump catch basins and pervious pavement (Town of Enfield Conservation Commission). The Town will continue to evaluate the need for potential modifications to local land use regulations and policy to promote the use of these and other Low Impact Development (LID) techniques for new development and redevelopment projects.

7 Pollution Prevention and Good Housekeeping

Pollution prevention and good housekeeping are intended to improve stormwater quality by preventing or minimizing exposure of pollutants to stormwater runoff, thereby protecting the water quality of receiving waters. Pollution prevention measures and good housekeeping can also lower operating costs and extend the lifespan of stormwater management equipment or systems.

7.1 Information Management System The Town of Enfield Highway Division is responsible for maintaining approximately 180 miles of town owned roadway. The Highway division responsibilities include maintenance/repair of the town owned drainage systems and catch basin cleaning/repairs, amongst other requirements. In the spring the Highway Division begins town-wide street sweeping. The completion date of sweeping is targeted for the middle of May, weather permitting.

Town of Enfield Highway Division personnel observe storm drainage systems for adequate and proper functioning, with problem locations brought to the attention of the Director for improvements consideration. A summary Erosion & Drainage Report was compiled in February 2008 (http://www.enfield-ct.gov/content/91/12798/797/11357/ ) as a basis for a detailed listing of projects, their location, issues, general cost estimates and priority rankings. This summary (and its updates) is used to reassess the severity of the erosion, flooding, drainage and other problems on both public and privately-owned properties with cost estimates for recommended improvements (Appendix G). Several Town facilities are regulated under the Industrial Stormwater Discharge General Permit as well as other environmental regulatory programs. Enfield facilities, which have a Stormwater Pollution

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Prevention Plan (SWPPP) and conduct routine outfall monitoring, are identified by site and outfall name as follows:

• Building & Grounds (BG-1) - (Parks & Recreation Garage) • Public Works Dept. (H-1 & H-2) • Transfer Station (TS-01) • Water Pollution Control Facility (E-1)

The most recent training events occurred on November 19, 2015, and December 1, 2015, for employees from each of the above listed facilities. They were instructed on a number of different topics, including good housekeeping practices, best management practices, materials management practices, spill control prevention, and spill response procedures. A site walk-through was also conducted at each facility to review the stormwater sampling locations, and potential sources of stormwater impacts.

Town residents are also invited to report an observable public safety or public improvement concern, such as a pothole, streetlight in need of repair, or other items that are observed to be a quality of life issue. In May 2012, The Town of Enfield launched a new program allowing residents to report concerns (requests for town services) through an online and mobile interface. Powered by SeeClickFix, the place based reporting platform allowed residents to document neighborhood concerns and improvements alike, ranging from potholes and graffiti to damaged sidewalks and storm damage. The on-demand reporting allows data collection of reported location, type of report (platform), time to acknowledge and time to close (Appendix G – “Enfield CT - On-Demand Reporting”). Through a “Request Tracker”, Town of Enfield residents can login on the Town of Enfield web page (Appendix G) and report a concern; selecting from one of five major topics; (1) General Questions, (2) Public Improvement, (3) Public Safety, (4) Snow Issues and (5) Zoning Violations; with some subcategories addressing topics associated with stormwater runoff quality.

7.2 Maintenance Schedule The Enfield Highway Division is responsible for maintaining approximately 180 miles of town owned roadway. There are approximately 5,500 catch basins in the Town of Enfield. The Town inspects and cleans municipal catch basins, primarily between March and October, resulting in the collection of winter debris in the spring and leaf litter in the fall. Leaf collection of 12,396 cubic yards was recorded from the fall 2014 Enfield Public Works activities. The Town manages catch basin cleanings in accordance with State of Connecticut regulations. It is reported that in a typical years’ time, recent work efforts have included 2,799 catch basins cleaned, 75 basins repaired and 42 screens and gates cleaned and inspected (Town of Enfield Public Works Department).

7.3 Plan Modifications No changes are proposed to the Stormwater Management Plan (SWMP) relative to pollution prevention/good housekeeping activities.

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7.4 Future Activities The Town of Enfield continues to gather relevant information pertaining to stormwater management, on both physical structures and non-structural controls to reduce particulate loading, maintain waterways and prevent scouring or erosion. The Town of Enfield will continue to document municipal facility maintenance activities and provide pollution prevention and good housekeeping training (including that required of the SWPPP for the various sites listed in Section 7.1) to Public Works employees.

8 Outfall Monitoring

The annual stormwater monitoring requirements of the MS4 General Permit describes the selection of six outfalls as representative of the overall nature of its respective land use type, based on two outfalls apiece from areas of primarily industrial development, commercial development, and residential development. Samples are to be collected from discharges resulting from a storm event that is greater than 0.1 inch magnitude and that occurs at least 72 hours after any previous storm event of 0.1 inch or greater. The grab samples are to be collected during the first 6 hours of a storm event discharge. Monitoring of the representative outfalls for the 2012, 2013, 2014 and 2015 annual events and are described below.

8.1 Sampling of Representative Outfalls

The Drainage Area and Outfall Map (Appendix D) illustrate the location of the two industrial, two commercial, and two residential outfalls used for representative stormwater monitoring. The industrial monitoring outfalls are both located in the Freshwater Brook Watershed. The commercial monitoring outfalls are located in the Freshwater Brook and Terry Brook Watersheds. The residential monitoring outfalls are located in the Grape Brook and Beemans Brook Watersheds. The Town of Enfield coordinated the completion of sampling at two outfalls in each of the three required land use categories; Industrial (I-1 & I-2), Commercial (C-1 & C-2) and Residential (R-1 & R-2); with ESS Group Inc. A summary of the monitoring locations and recent sampling events is summarized in a table (Appendix H).

There are no parameter benchmarks in the MS4 General Permit; however a comparison of results between outfalls during a single event and across multiple events may reveal baseline information or general trends, if applicable. A summary of the annual analytical monitoring results for CY 2012, CY 2013, CY 2014, and CY 2015 are included in ‘Annual Analytical Results’ tables for each year (Appendix H).

No explicit evidence of pollution was noted in CY 2012, CY 2013, CY 2014 and CY 2015, based on analytical results. In CY 2012; R-2 had a low pH (2.8 SU) – which appears suspect and a high conductivity (1,200 umhos/cm), with three of six locations with elevated E. coli results (C-1, I-1 and R-1) at 5,000 col/100 ml or greater. In CY 2013; R-2 had a high E. coli reading of 9,100 col/100 ml compared to other results. In CY 2014, results appeared to be in line with previous results with the exception of E. coli results at locations C-1 and R-2 with levels between 4110 and 5480 MPN/100 ml. In CY 2015, C-1 and R-2 had high E.coli levels of 5,790 and 3,450 col/100 ml. The water hardness results were also elevated from previous years at locations C-1 (136 mg/L), C-2 (89.8 mg/L), I-2 (49.5

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mg/L), and R-2 (109 mg/L). Refer to analytical data summarized on Stormwater Monitoring Report Forms (Appendix H).

Based on a review of the representative outfalls for the three land use categories, there is no consistency in elevated readings at one outfall over time, nor when comparing land use categories to one another. Therefore it does not appear that the representative outfalls would indicate on-going illicit discharges occurring in the Town of Enfield watersheds based on the CY 2012, CY 2013, CY 2014 and CY 2015 analytical results. Other stormwater regulatory programs, such as the DEEP Industrial Stormwater Discharge General Permit (Industrial GP) benchmarks may be used as a reference for evaluation of like parameters.

8.2 Other Water Quality Data Collection

In addition to the monitoring performed by the Town of Enfield, the Scantic River Watershed Association performs its own sampling to provide current information on water quality and overall watershed health to the Enfield Conservation Commission and to the State of Connecticut (http://www.srwa.org/about.shtml). The sampling consists of Abiotic Monitoring (Meter monitoring, Chemical analysis, and Stream walk visual monitoring) and Biotic Monitoring (Rapid Bioassesment by Volunteers and Silt Macroinvertebrate Survey). The Town may assess the water quality data and determine if town-wide stormwater management system practices should be modified. Additional water quality discharge data is available from the Connecticut River Watershed Report (http://www.ctriver.org/portfolio_category/ct/ and www.connecticutriver.us ). The Enfield portion of the Connecticut River is represented by two sampling stations; Parsons Road near the Railroad crossing (Station #1908) and on Kings Island State boat ramp (Station #1924). These stations have been used to collect data on E. Coli and fecal coliform colonies in the water (http://www.ct.gov/deep/lib/deep/water/tmdl/statewidebacteria/connecticutriver4000.pdf )

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Appendix A

MS4 General Permit Registration

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General Permit for the Discharge of Stormwater from Small Municipal Separate Storm Sewer Systems

Issued: January 9, 2004 Re-issued: January 9, 2009 Re-issuance Date: January 12, 2016 Expires: June 30, 2017

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General Permit for the Discharge of Stormwater from Small Municipal Separate Storm Sewer Systems

Table of Contents

Section 1. Authority ...... 1

Section 2. Definitions ...... 1

Section 3. Authorization Under This General Permit ...... 2

(a) Eligible Activities ...... 2 (b) Requirements for Authorization ...... 3 (c) Registration ...... 3 (d) Geographic Area ...... 3 (e) Effective Date and Expiration Date of this General Permit ...... 4 (f) Effective Date of Authorization ...... 4 (g) Waiver of Authorization ...... 4

Section 4. Registration Requirements...... 4

(a) Who Must File a Registration ...... 4 (b) Scope of Registration ...... 4 (c) Contents of Registration ...... 4 (d) Availability of Part B Registrations, Annual Reports and Stormwater Management Plans ...... 6 (e) Where to File a Registration ...... 6 (f) Additional Information ...... 6 (g) Action by Commissioner ...... 7

Section 5. Requirements of this General Permit ...... 7

(a) Conditions Applicable for Certain Discharges ...... 7 (b) Stormwater Management Plan ...... 8

Section 6. Development of Stormwater Management Plan ...... 8

(a) Minimum Control Measures ...... 8 (b) Sharing Responsibility ...... 11 (c) Proper Operation and Maintenance ...... 12 (d) Signature Requirements ...... 12 (e) Plan Review Fee ...... 12 (f) Keeping Plans Current ...... 12 (g) Failure to Prepare or Amend Plan ...... 13 (h) Monitoring Requirements ...... 13 (i) Reporting & Record Keeping Requirements ...... 14

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(j) Other Requirements ...... 15 (k) Total Maximum Daily Load (TMDL) Allocations ...... 15

Section 7. Additional Requirements of this General Permit ...... 15

(a) Regulations of Connecticut State Agencies Incorporated into this General Permit ...... 15 (b) Reliance on Registration ...... 16 (c) Duty to Correct and Report Violations ...... 16 (d) Duty to Provide Information ...... 16 (e) Certification of Documents ...... 16 (f) Date of Filing ...... 16 (g) False Statements ...... 17 (h) Correction of Inaccuracies ...... 17 (i) Other Applicable Law ...... 17 (j) Other Rights ...... 17

Section 8. Commissioner’s Powers ...... 17

(a) Abatement of Violations ...... 17 (b) General Permit Revocation, Suspension, or Modification ...... 17 (c) Filing of an Individual Application ...... 18

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Section 1. Authority

This general permit is issued under the authority of Section 22a-430b of the Connecticut General Statutes.

Section 2. Definitions

The definitions of terms used in this general permit shall be the same as the definitions contained in Sections 22a-423 of the Connecticut General Statutes and Section 22a-430-3(a) of the Regulations of Connecticut State Agencies. As used in this general permit, the following definitions shall apply:

“Authorized activity” means any activity authorized under this general permit.

“Best Management Practices (BMP)” means those practices, which reduce pollution and which have been determined by the Commissioner to be acceptable based on, but not limited to, technical, economic, and institutional feasibility.

“Coastal area” means coastal area as defined in Section 22a-94 of the Connecticut General Statutes.

“Coastal waters” means coastal waters as defined in Section 22a-93 of the Connecticut General Statutes.

“Department” means the Department of Energy & Environmental Protection.

“Fresh-tidal wetland” means a tidal wetland with an annual average salinity of less than 0.5 parts per thousand.

“Guidelines” means the Connecticut Guidelines for Soil Erosion and Sediment Control, as amended, established pursuant to Section 22a-328 of the Connecticut General Statutes.

“High tide line” means high tide line as defined in Section 22a-359(c) of the Connecticut General Statutes.

“Illicit Discharge” means any unpermitted discharge to waters of the state that does not consist entirely of stormwater or uncontaminated ground water except those discharges identified in Section 3(a)(2) of this general permit when such non-stormwater discharges are approved, in writing, by the Commissioner as discharges that are not significant contributors of pollution to a discharge from an identified MS4.

“Individual permit” means a permit issued to a named permittee under Section 22a-430 of the Connecticut General Statutes.

“Inland wetland” means wetlands as that term is defined in Section 22a-38 of the Connecticut General Statutes.

“Municipal separate storm sewer system (MS4)” means conveyances for stormwater, including, but not limited to, roads with drainage systems, municipal streets, catch basins, curbs, gutters, ditches, man-made channels or storm drains owned or operated by any municipality, State agency or Federal agency and discharging directly to surface waters of the state.

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“Permittee” means any municipality, that initiates, creates originates or maintains a discharge authorized by this general permit and that has filed a registration pursuant to Section 4 of this permit.

“Point Source” means any discernible, confined and discrete conveyance, including but not limited to, any pipe, ditch, channel, tunnel, conduit, well, discrete fissure, container, rolling stock, concentrated animal feeding operation, landfill leachate collection system, vessel or other floating craft from which pollutants are or may be discharged.

“Registration” means a registration form filed with the Commissioner pursuant to Section 4 of the general permit.

“Regulated Small MS4” means any municipally-owned or municipally-operated Small MS4 (as defined below) authorized by this general permit including all those located partially or entirely within an Urbanized Area and those additional municipally-owned or municipally-operated Small MS4s located outside an Urbanized Area as may be designated by the Commissioner. (Note: A list of municipalities containing Small MS4s is included in Appendix A of this general permit.)

“Retain or retention” means to permanently hold stormwater runoff on-site with no subsequent point source release.

“Small MS4” means any MS4 that is not already covered by the Phase I MS4 stormwater program including state- and federally-owned systems, such as colleges, universities, prisons, and military bases. (Note: state- and federally-owned MS4s are authorized under separate general permits.)

“Stormwater” means waters consisting of precipitation runoff.

“Tidal wetland” means a wetland as that term is defined in Section 22a-29(2) of the Connecticut General Statutes.

“Urbanized Area (UA)” means the areas of the State of Connecticut so defined by the U.S. Census Bureau for the 2000 census.

“Total Maximum Daily Load (TMDL)” means the maximum capacity of a surface water to assimilate a pollutant as established by the Commissioner including pollutants contributed by point and non- point sources and a margin of safety.

Section 3. Authorization Under This General Permit

(a) Eligible Activities

(1) The discharge of stormwater from or associated with a Regulated Small MS4 is authorized by this general permit, provided the requirements of subsection (b) of this section are satisfied and the activity is conducted in accordance with the conditions listed in Section 5 of this general permit.

(2) This permit authorizes the following non-stormwater discharges provided they do not contribute to a violation of water quality standards and such discharges are identified in the Stormwater Management Plan and approved, in writing, by the Commissioner as discharges that are not significant contributors of pollutants to any identified MS4:

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 landscape irrigation;  uncontaminated ground water discharges such as pumped ground water, foundation drains, water from crawl space pumps and footing drains;  irrigation water;  lawn watering runoff;  residual street wash water;  discharges or flows from fire fighting activities (except training); and  naturally occurring discharges such as rising ground waters, uncontaminated ground water infiltration (as defined at 40 CFR 35.2005(20)), springs, diverted stream flows and flows from riparian habitats and wetlands.

(b) Requirements for Authorization

This general permit authorizes the activity listed in subsection (a) of this section provided:

(1) Coastal Management Act Such activity is consistent with all applicable goals and policies in Section 22a-92 of the Connecticut General Statutes, and shall not cause adverse impacts to coastal resources as defined in Section 22a-93(15) of the Connecticut General Statutes.

(2) Endangered and Threatened Species Such activity shall not threaten the continued existence of any species listed as endangered or threatened pursuant to Section 26-306 of the Connecticut General Statutes and shall not result in the destruction or adverse modification of habitat designated as essential to such species.

(3) National Historic Preservation Act Stormwater discharges or implementation of the registrant’s stormwater management plan shall not adversely affect properties listed or eligible for listing in the National Register of Historic Places, unless the registrant is in compliance with requirements of the National Historic Preservation Act and has coordinated with the appropriate State Historic Preservation Officer to avoid or minimize impacts from any necessary activities.

(4) The stormwater is not discharged to a Publicly Owned Treatment Works (POTW) or to ground water except for stormwater infiltration through a designed basin or structure.

(c) Registration

Pursuant to Section 4 of this permit, any municipality that initiates, creates, originates or maintains any discharge of water from a regulated Small MS4 shall submit a registration using forms prescribed and provided by the Commissioner (or a photocopy thereof).

(d) Geographic Area

This general permit applies throughout the State of Connecticut.

(e) Effective Date and Expiration Date of this General Permit

This general permit is effective January 12, 2016 and expires on June 30, 2017.

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(f) Effective Date of Authorization

An activity is authorized by this general permit on the date the general permit becomes effective or on the date the authorized activity is initiated.

(g) Waiver of Authorization

A municipality may request a waiver from authorization under this general permit if the population within the Urbanized Area portion of town is less than 1000 people, the discharge from the MS4 within the UA does not exceed a Total Maximum Daily Load (TMDL) allocation or is not otherwise a significant contributor to degradation of water quality and the Commissioner issues such waiver in writing.

Section 4. Registration Requirements

(a) Who Must File a Registration

Any municipality that initiates, creates, originates or maintains a discharge of stormwater from or associated with a regulated Small MS4 shall file with the Commissioner a two-part registration form that meets the requirements of this section of this general permit. Part A of the registration was to be submitted on or before April 9, 2004. Part B of the registration was to be submitted on or before July 9, 2004.

(b) Scope of Registration

A registrant must register on one set of registration forms for all discharges that are operated by the registering municipality. A municipality may not submit more than one registration under this general permit.

(c) Contents of Registration

(1) Fees

(A) The municipal registration fee of $250.00 was submitted with the Part A registration form. No activity shall be authorized by this general permit until the registration fee has been paid in full.

(B) The registration fee was paid by check or money order payable to the Department of Energy & Environmental Protection.

(C) The registration fee is non-refundable.

(2) Part A Registration Form

Part A of the registration was filed on forms prescribed and provided by the Commissioner and included the following:

(A) Name of the municipality and the name, title, address, and telephone number of the chief elected official or principal executive officer.

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(B) Name, address, and telephone number of the primary contact person for the municipality.

(C) Name, primary contact, address, and telephone number of any consultant(s) or engineer(s) retained by the municipality to prepare the registration,

(D) Name of receiving stream(s), watershed(s) or waterbody(s) to which the MS4 discharges.

(3) Part B Registration Form

Part B of the registration was filed on forms prescribed and provided by the Commissioner and included the following:

(A) Name of the municipality and the name, title, address, and telephone number of the chief elected official or principal executive officer.

(B) For each of the Minimum Control Measures in Section 6(a), the following information was included: (i) each Best Management Practice (BMP) to be implemented; (ii) the person(s) responsible for implementing each BMP; (iii) the date by which each BMP will be implemented; (iv) the measurable goal(s) by which each BMP will be evaluated.

(C) The signature of the chief elected official or principal executive officer of the municipality or their designee (as specified in RCSA Section 22a-430-3(b)(2)(B) or as acceptable to the Commissioner) and of the individual or individuals responsible for actually preparing the registration, each of whom shall certify in writing as follows:

“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 investigation, including my inquiry of those individuals responsible for obtaining the information, the submitted information is true, accurate and complete to the best of my knowledge and belief.

I certify that this permit registration is on complete and accurate forms as prescribed by the Commissioner without alteration of the text.

I also certify under penalty of law that I have read and understand all requirements of the General Permit for the Discharge of Stormwater from a Municipal Separate Storm Sewer System issued on January 9, 2004 and that all requirements for authorization under the general permit are met and that a system is in place to ensure that all terms and conditions of this general permit will continue to be met for all discharges authorized by this general permit for the municipality. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowingly making false statements.” (See CGS § 53a-157b.)

(d) Availability of Part B Registrations, Annual Reports, and Stormwater Management Plans

(1) At least thirty days prior to submission of the Part B Registration to the Department, each municipality made available for public review and comment a draft copy of the complete Bureau of Materials Management & Compliance Assurance 1/12/16 DEEP-WPED-GP-021 5 of 17

Part B Registration. Reasonable efforts to inform the public of this document were undertaken by such municipality. Such draft copies were made available at the municipality’s main office or at a local library for public inspection and copying consistent with the federal and state Freedom of Information Acts.

(2) At least thirty days prior to submission of each Annual Report to the Department, each municipality shall make available for public review and comment a draft copy of the complete Annual Report. Reasonable efforts to inform the public of this document shall be undertaken by such municipality. Such draft copies shall be made available at the municipality’s main office or at a local library for public inspection and copying consistent with the federal and state Freedom of Information Acts.

(3) Draft copies of each Storm Water Management Plan shall be made available upon request.

(e) Where to File a Registration

A registration was filed with the Commissioner at the following address:

CENTRAL PERMIT PROCESSING UNIT DEPARTMENT OF ENERGY & ENVIRONMENTAL PROTECTION 79 ELM STREET HARTFORD, CT 06106-5127

(f) Additional Information

The Commissioner may issue a written request to require a municipality, state agency or federal agency to submit additional information that the Commissioner reasonably deems necessary to evaluate the consistency of the subject activity with the requirements for authorization under this general permit. A response to the Commissioner’s request for additional information shall be submitted to the Department within thirty days of the Commissioner’s request.

(1) A copy of the Stormwater Management Plan shall be made available for review by the general public upon request at a designated town office(s) during regular town business hours.

(2) The permittee shall make a copy of the Stormwater Management Plan available to the following immediately upon request:

(A) the Commissioner (see Section 6(e));

(B) in the case of a municipality, state or federal agency adjacent to or interconnected with the permittee’s storm sewer system, to the owner or operator of that MS4; and

(C) in the case of an MS4 stormwater discharge to a water supply watershed, to the public water supply company.

(g) Action by Commissioner

(1) In the event the Commissioner determines that a Minimum Control Measure or Best Management Practice as identified in the Part B Registration or in the Stormwater Management Plan may not reduce stormwater discharges from a municipal separate storm

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sewer system to the maximum extent practicable, the Commissioner may allow or require a municipality to resubmit the Part B Registration prior to the Commissioner issuing a notice to obtain an individual permit for a discharge provided the municipality conducts a timely public hearing, after adequate public notice, to investigate what, if any, additional plans, measures or practices are necessary to reduce stormwater discharges to the maximum extent practicable. Any such request to resubmit a Part B Registration shall be in writing, and may be submitted to the Commissioner by the municipality or by any interested person. Written notice of the Commissioner’s decision to allow a municipality to resubmit the Part B Registration shall be provided to the chief elected official or principal executive officer of such municipality and to any other person submitting a written request for such notice.

(2) The Commissioner may require that a permittee obtain an individual permit for any discharge authorized by this permit in accordance with Section 22a-430b of the Connecticut General Statutes.

(3) The Commissioner shall disapprove a registration:

(A) if the Commissioner finds that the subject activity is ineligible for this general permit, or that the municipality cannot or is unlikely to comply with this general permit; or

(B) for any other reason provided by law.

(4) Disapproval of a registration shall constitute notice to the applicant that the subject activity may not lawfully be conducted or maintained or that the subject activity may not lawfully be conducted or maintained without issuance of an individual permit issued pursuant to Section 22a-430 of the Connecticut General Statutes.

(5) Disapproval of a registration shall be in writing.

Section 5. Requirements of this General Permit

The permittee shall at all times continue to meet the requirements for authorization set forth in Section 3 of this general permit. In addition, a permittee shall ensure that authorized activities are conducted in accordance with the following conditions:

(a) Conditions Applicable for Certain Discharges

(1) If the permittee initiates, creates, or originates a discharge of stormwater which is located less than 500 feet from a tidal wetland that is not a fresh-tidal wetland, such discharge shall flow through a system designed to retain the volume of stormwater runoff generated by 1 inch of rainfall on the watershed for that system.

(2) If the permittee wishes to initiate, create, or originate a discharge of stormwater below the high tide line into coastal, tidal, or navigable waters for which a permit is required under the Structures and Dredging Act in accordance with Section 22a-361(a) of the Connecticut General Statutes or into tidal wetlands for which a permit is required under the Tidal Wetlands Act in accordance with Section 22a-32 of the Connecticut General Statutes, the municipality shall obtain such permit(s) from the Commissioner prior to initiating, creating or originating such discharge.

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(b) Stormwater Management Plan

The permittee shall develop, implement, and enforce a stormwater management plan designed to reduce the discharge of pollutants from the Small MS4 to the maximum extent practicable (MEP), to protect water quality, and to satisfy the appropriate water quality requirements of the Clean Water Act. Under this program, the permittee shall prepare a Stormwater Management Plan pursuant to Section 6 of this general permit, which plan was to be completed, and all Minimum Control Measures implemented, by January 8, 2009. The permittee shall continue to implement the Stormwater Management Plan and all Minimum Control Measures required by this general permit until January 8, 2015 or the next reissuance.

Section 6. Development of Stormwater Management Plan

The Stormwater Management Plan (the Plan) shall address the Minimum Control Measures as indicated in this section. Those measures indicated as required within the Urbanized Area portion of the Regulated Small MS4 shall be implemented, at a minimum, within those areas. At the discretion of the permittee, the Minimum Control Measures required within the Urbanized Areas may also be applied to any MS4 outside of the Urbanized Area. Those measures indicated as required throughout the municipality shall be implemented for all areas of the municipality regardless of Urbanized Area.

(a) Minimum Control Measures

For each Minimum Control Measure, the permittee shall: define appropriate BMPs; designate a person(s) and job title responsible for each BMP; define a time line for implementation of each BMP; and define measurable goals for each BMP. The Minimum Control Measures in the Stormwater Management Plan include, but are not limited to:

(1) Public education and outreach on stormwater impacts.

(A) Required throughout the municipality: (i) implement a public education program to distribute educational materials to the community or conduct equivalent outreach activities about the impacts of stormwater discharges on waterbodies and the steps that the public can take to reduce pollutants in stormwater runoff.

(2) Public Involvement/Participation.

(A) Required throughout the municipality: (i) comply with state and local public notice and Freedom of Information requirements when implementing a public involvement/participation program. Where notice requirements are inconsistent, the notice provisions providing for the most notice and opportunity for public comment shall be followed. (ii) develop a public involvement/participation program that includes the public in developing, implementing, and reviewing your stormwater management plan.

(3) Illicit discharge detection and elimination.

(A) Required throughout the municipality: (i) implement an ordinance or other regulatory mechanism to effectively prohibit non- stormwater discharges, except as provided in Section 3(a)(2), into the MS4, as well as sanctions to ensure compliance, to the extent allowable under State or local law; Bureau of Materials Management & Compliance Assurance 1/12/16 DEEP-WPED-GP-021 8 of 17

(ii) inform public employees, businesses, and the general public of hazards associated with illegal discharges and improper disposal of waste; and (iii) by January 8, 2007, expand the map required by subsection (B)(i) below to identify on such map all outfalls of 15” or greater where such outfalls are located anywhere within each municipality;

(B) Required within the Urbanized Area: (i) by January 8, 2006, develop a map or series of maps at a minimum scale of 1”=2000’ and maximum scale of 1”=100’ showing all stormwater discharges from a pipe or conduit with a diameter of 15” or greater (or equivalent cross-sectional area) owned or operated by the municipality. For each discharge the following information shall be included: a. Type, material, and size of conveyance, outfall or channelized flow (e.g. 24” concrete pipe); b. The name and Surface Water Quality Classification of the immediate surface waterbody or wetland to which the stormwater runoff discharges; c. If the outfall does not discharge directly to a named waterbody, the name of the nearest named waterbody to which the outfall eventually discharges; d. The name of the watershed in which the discharge is located. (ii) by January 8, 2008, expand the map required by subsection (B)(i) above to identify on the map all outfalls of 12” or greater that are located within an urbanized area; (iii) develop, implement and enforce a program to detect and eliminate existing illicit discharges, as defined in 40CFR 122.26(b)(2), into the MS4; and (iv) develop and implement a plan to detect and address future non-stormwater discharges, including illegal dumping, to the MS4.

(4) Construction site stormwater runoff control.

(A) Required throughout the municipality: (i) develop, implement, and enforce a program, or modify an existing program, to reduce pollutants in any stormwater runoff to the MS4 from construction activities that result in a land disturbance of greater than or equal to one acre. Reduction of stormwater discharges from construction activity disturbing less than one acre shall be included in the program if that construction activity is part of a larger common plan of development or sale that would disturb one acre or more. The program shall include, but not be limited to, the development and implementation of: a. an ordinance or other regulatory mechanism to require erosion and sediment controls, as well as sanctions for non-compliance, to the extent allowable under state or local law; b. procedures for notifying construction site developers and operators of the requirements for registration under the General Permit for the Discharge of Stormwater and Dewatering Wastewaters Associated with Construction Activities; c. requirements for construction site operators to implement appropriate erosion and sediment control best management practices in accordance with the Guidelines; d. requirements for construction site operators to control waste at the site such as discarded building materials, concrete truck washout, chemicals, litter, and sanitary waste that may cause adverse impacts to water quality; e. procedures for site plan review which incorporate consideration of potential water quality impacts; Bureau of Materials Management & Compliance Assurance 1/12/16 DEEP-WPED-GP-021 9 of 17

f. procedures for receipt and consideration of information submitted by the public; and g. procedures for site inspection and enforcement of control measures.

(5) Post-construction stormwater management in new development and redevelopment.

(A) Required throughout the municipality: (i) develop, implement, and enforce a program to address stormwater runoff from new development and redevelopment projects that disturb greater than or equal to one acre, including projects less than one acre that are part of a larger common plan of development or sale, that discharge into the MS4 or directly to waters of the State. This program shall ensure that controls are implemented to require appropriate infiltration practices, reduction of impervious surface, creation of or conversion to sheet flow, measures and/or structures to reduce sediment discharge and any other innovative measures that will prevent or minimize water quality impacts; (ii) develop and implement strategies which include a combination of structural and/or non-structural best management practices (BMPs) appropriate for your municipality; (iii) use an ordinance or other regulatory mechanism to address the elements of subsection (i) above regarding post-construction runoff from new development and redevelopment projects to the extent allowable under State or local law; and (iv) ensure adequate long-term operation and maintenance of BMPs.

(6) Pollution prevention/good housekeeping for municipal operations.

(A) Required throughout the municipality: (i) develop and implement an operation and maintenance program that includes a training component for municipal employees and contractors and has the ultimate goal of preventing or reducing pollutant runoff from municipal operations; (ii) using training materials that are available from the EPA, the State or other organizations, this program shall include employee training to prevent and reduce stormwater pollution from activities such as park and open space maintenance, fleet and building maintenance, new construction and land disturbances, and stormwater system maintenance; (iii) develop and implement a program to sweep all streets at least once a year as soon as possible after snowmelt; (iv) develop and implement a program to evaluate and, if necessary, clean catch basins and other stormwater structures that accumulate sediment at least once a year, including a provision to identify and prioritize those structures that may require cleaning more than once a year; and (v) develop and implement a program to evaluate and, if necessary, prioritize for repairing, retrofitting or upgrading the conveyances, structures and outfalls of the MS4.

(B) Required within the Urbanized Area: (i) develop and implement a program to evaluate and prioritize those streets that may require sweeping more than once a year.

(b) Sharing Responsibility

(1) Qualifying Local Program

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The permittee may satisfy the requirement to implement a BMP for a Minimum Control Measure by having a third party implement the BMP.

When a permittee is relying on a third party to implement one or more BMP(s), the permittee shall note that fact in the registration and annual report required in subsection (i) below. If the third party fails to implement the BMP(s), the permittee remains responsible for its implementation.

(Note: For example, if a local watershed organization performs an annual “river clean-up”, this event may be used to satisfy a BMP for the Public Participation and/or the Pollution Prevention and Good Housekeeping Minimum Control Measure.)

(2) Qualifying State or Federal Program

If a BMP or Minimum Control Measure is the responsibility of a third party under another NPDES stormwater permit, the permittee is not required to include such BMP or Minimum Control Measure in its stormwater management plan. The permittee shall reference this qualifying program in their Stormwater Management Plan. However, the permittee is not responsible for its implementation if the third party fails to perform. The permittee shall periodically confirm that the third party is still implementing this measure. If the third party fails to implement the measure, the Stormwater Management Plan may be modified to address the measure, if necessary.

In the case of a permitted municipal industrial activity that is covered by the General Permit for the Discharge of Stormwater Associated with Industrial Activity, the permittee may reference the activity’s Stormwater Pollution Prevention Plan to address a portion of the permittee’s Stormwater Management Plan.

(Note: For example, the permittee may reference a regional mall’s requirement to perform sweeping and catch basin cleaning under the General Permit for the Discharge of Stormwater Associated with Commercial Activity. This third party action may be used to address a portion of the permittee’s requirement under the Good Housekeeping and Pollution Prevention Minimum Control Measure.)

(3) Coordination of Permit Responsibilities

Where a portion of the separate storm sewer system within a municipality is owned or otherwise the responsibility of another municipality, or a state or federal agency the entities shall coordinate the development and implementation of their respective Stormwater Management Plans to address all the elements of Section 6. A description of the respective responsibilities for these elements shall be included in the Stormwater Management Plan for each municipality.

(Note: For example, a storm sewer system within a municipality may be operated and maintained by the DOT. In cases such as these, the two entities shall coordinate their Stormwater Management Plans to address the Minimum Control Measures, particularly at the interface between the two storm sewer systems.)

(c) Proper Operation and Maintenance

The permittee shall at all times properly operate and maintain all facilities and systems of treatment and control, including related appurtenances, which are installed or used by the

Bureau of Materials Management & Compliance Assurance 1/12/16 DEEP-WPED-GP-021 11 of 17

permittee to achieve compliance with the conditions of this permit. Proper operation and maintenance includes adequate laboratory controls and appropriate quality assurance procedures. Proper operation and maintenance requires the operation of backup or auxiliary facilities or similar systems, installed by a permittee when necessary to achieve compliance with this permit.

(d) Signature Requirements

The Plan shall be signed by the chief elected official or principal executive officer, as those terms are defined in Section 22a-430-3(b)(2) of the Regulations of Connecticut State Agencies. The Plan shall be retained by the chief elected official or principal executive officer and copies retained by town officials or employees responsible for implementation of the Plan.

(e) Plan Review Fee

When submitting a Stormwater Management Plan as requested by the Commissioner in accordance with Section 4(f)(2)(A) each municipal permittee shall submit a plan review fee of $187.50.

(f) Keeping Plans Current The permittee shall amend the Plan whenever; (1) there is a change which has the potential to cause pollution of the waters of the state; or (2) the actions required by the Plan fail to ensure or adequately protect against pollution of the waters of the state; or (3) the Commissioner requests modification of the Plan. The amended Plan shall be completed and all actions required by such Plan shall be completed within a time period determined by the Commissioner.

The Commissioner may notify the permittee in writing at any time that the Plan does not meet one or more of the requirements of this general permit. Within 30 days of such notification, unless otherwise specified by the Commissioner in writing, the permittee shall respond to the Commissioner indicating how they plan to modify the Plan to address these requirements. Within 90 days of this response or within 120 days of the original notification, whichever is less, unless otherwise specified by the Commissioner in writing, the permittee shall then revise the Plan, perform all actions required by the revised Plan, and shall certify to the Commissioner that the requested changes have been made and implemented. The permittee shall provide such information as the Commissioner requires to evaluate the Plan and its implementation.

(g) Failure to Prepare or Amend Plan

In no event shall failure to complete or update a Plan in accordance with Sections 5(b) and 6 of this general permit relieve a permittee of responsibility to implement actions required to protect the waters of the state and to comply with all conditions of this general permit.

(h) Monitoring Requirements

(1) Schedule of Monitoring

(A) Stormwater monitoring shall be conducted by the Regulated Small MS4 annually starting in 2004. At least two outfalls apiece shall be monitored from areas of primarily industrial development, commercial development and residential development, respectively, for a total of six (6) outfalls monitored. Each monitored outfall shall be

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selected based on an evaluation by the MS4 that the drainage area of such outfall is representative of the overall nature of its respective land use type.

(B) The municipality may submit a request to the Commissioner in writing for implementation of an alternate sampling plan of equivalent or greater scope. The Commissioner will approve or deny such a request in writing.

(2) Parameters to be monitored

The parameters to be monitored for each discharge point shall include:

pH (SU) Hardness (mg/l) Conductivity (umos) Oil and grease (mg/l) Chemical Oxygen Demand (mg/l) Turbidity (NTU) Total Suspended Solids (mg/l) Total Phosphorous (mg/l) Ammonia (mg/l) Total Kjeldahl Nitrogen (mg/l) Nitrate plus Nitrite Nitrogen (mg/l) E. coli (col/100ml) In addition to this list of parameters, uncontaminated rainfall pH shall be measured at the time the runoff sample is taken.

(3) Stormwater Monitoring Procedures

(A) Samples shall be collected from discharges resulting from a storm event that is greater than 0.1 inch in magnitude and that occurs at least 72 hours after any previous storm event of 0.1 inch or greater. Runoff events resulting from snow or ice melt cannot be used to meet the minimum annual monitoring requirements. Grab samples shall be used for all monitoring. Grab samples shall be collected during the first 6 hours of a storm event discharge. The uncontaminated rainfall pH measurement shall also be taken at this time. Samples for all discharges shall be taken during the same storm event.

(B) Storm Event Information

The following information shall be collected for the storm events monitored:

(i) The date, temperature, time of the start of the discharge, time of sampling, and magnitude (in inches) of the storm event sampled.

(ii) The duration between the storm event sampled and the end of the previous measurable (greater than 0.1 inch rainfall) storm event.

(C) Test Procedures

Unless otherwise specified in this permit, all pollutant parameters shall be tested according to methods prescribed in Title 40, CFR, Part 136 (1990).

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(i) Reporting & Record Keeping Requirements

(1) The permittee shall keep records required by this permit for at least 5 years following its expiration or longer if requested by the Commissioner in writing. Such records, including the Stormwater Management Plan, shall be available to the public at reasonable times during regular business hours.

(2) By January 1, 2005 and annually thereafter by January 1, the permittee shall submit an Annual Report to:

STORMWATER PERMIT COORDINATOR BUREAU OF MATERIALS MANAGEMENT & COMPLIANCE ASSURANCE DEPARTMENT OF ENERGY & ENVIRONMENTAL PROTECTION 79 ELM STREET HARTFORD, CT 06106-5127

The report shall include:

(i) A municipal plan review fee of $187.50;

(ii) The status of compliance with this general permit, an assessment of the appropriateness of the identified best management practices and progress towards achieving the implementation dates and measurable goals for each of the Minimum Control Measures;

(iii) All monitoring data collected and analyzed pursuant to Section 6(g);

(iv) All other information collected and analyzed, including data collected under Section 6(a)(3), during the reporting period;

(v) A summary of the stormwater activities the permittee plans to undertake during the next reporting cycle; and

(vi) A change in any identified measurable goals or implementation dates that apply to the program elements.

(j) Other Requirements

(1) There shall be no distinctly visible floating scum, oil or other matter contained in the stormwater discharge. Excluded from this are naturally occurring substances such as leaves and twigs provided no person has placed such substances in or near the discharge.

(2) The stormwater discharge shall not result in pollution due to acute or chronic toxicity to aquatic and marine life, impair the biological integrity of aquatic or marine ecosystems, or result in an unacceptable risk to human health.

(k) Total Maximum Daily Load (TMDL) Allocations

If a TMDL is approved for any waterbody into which the permittee discharges, the permittee shall review its Stormwater Management Plan if the TMDL includes requirements for control of stormwater discharges. If the stormwater discharge(s) do not meet the TMDL allocations, the Bureau of Materials Management & Compliance Assurance 1/12/16 DEEP-WPED-GP-021 14 of 17

permittee shall modify its Stormwater Management Plan to implement the TMDL within four months of the TMDL’s approval and notify the Commissioner of this modification.

Section 7. Additional Requirements of this General Permit

(a) Regulations of Connecticut State Agencies Incorporated into this General Permit

The permittee shall comply with all laws applicable to the subject discharges, including but not limited to, the following Regulations of Connecticut State Agencies which are hereby incorporated into this general permit, as if fully set forth herein:

(1) Section 22a-430-3:

Subsection (b) General - subparagraph (1)(D) and subdivisions (2),(3),(4) and (5) Subsection (c) Inspection and Entry Subsection (d) Effect of a Permit - subdivisions (1) and (4) Subsection (e) Duty to Comply Subsection (f) Proper Operation and Maintenance Subsection (g) Sludge Disposal Subsection (h) Duty to Mitigate Subsection (i) Facility Modifications, Notification - subdivisions (1) and (4) Subsection (j) Monitoring, Records and Report Requirements - subdivisions (1), (6), (7), (8), (9) and (11) (except subparagraphs (9) (A) (2) and (9) (c) Subsection (k) Bypass Subsection (m) Effluent Limitation Violations Subsection (n) Enforcement Subsection (p) Spill Prevention and Control Subsection (q) Instrumentation, Alarms, Flow Recorders Subsection (r) Equalization

(2) Section 22a-430-4

Subsection (t) Prohibitions Subsection (p) Revocation, Denial, Modification Appendices

(b) Reliance on Registration

In evaluating the permittee's registration, the Commissioner has relied on information provided by the permittee. If such information proves to be false or incomplete, the permittee's authorization may be suspended or revoked in accordance with law, and the Commissioner may take any other legal action provided by law.

(c) Duty to Correct and Report Violations

Upon learning of a violation of a condition of this general permit, a permittee shall immediately take all reasonable action to determine the cause of such violation, correct and mitigate the results of such violation and prevent further such violation. The permittee shall report in writing such violation and such corrective action to the Commissioner within five (5) days of the permittee's learning of such violation. Such information shall be filed in accordance with the certification requirements prescribed in Section 7(e) of this general permit. Bureau of Materials Management & Compliance Assurance 1/12/16 DEEP-WPED-GP-021 15 of 17

(d) Duty to Provide Information

If the Commissioner requests any information pertinent to the authorized activity or to compliance with this general permit or with the permittee's authorization under this general permit, the permittee shall provide such information within thirty (30) days of such request. Such information shall be filed in accordance with the certification requirements prescribed in Section 7(e) of this general permit.

(e) Certification of Documents

Any document, including but not limited to any notice, information or report, which is submitted to the Commissioner under this general permit shall be signed by the chief elected official or principal executive officer of the municipality, and by the individual or individuals responsible for actually preparing such document, each of whom shall certify in writing as follows:

“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 investigation, including my inquiry of those individuals responsible for obtaining the information, 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 Connecticut General Statutes, and in accordance with any other applicable statute.”

(f) Date of Filing

For purposes of this general permit, the date of filing with the Commissioner of any document is the date such document is received by the Commissioner. The word “day” as used in this general permit means the calendar day; if any date specified in the general permit falls on a Saturday, Sunday, or legal holiday, such deadline shall be the next business day.

(g) False Statements

Any false statement in any information submitted pursuant to this general permit may be punishable as a criminal offense, in accordance with Section 22a-6, under Section 53a-157b of the Connecticut General Statutes.

(h) Correction of Inaccuracies

Within fifteen days after the date the permittee becomes aware of a change in any information in any material submitted pursuant to this general permit, or becomes aware that any such information is inaccurate or misleading or that any relevant information has been omitted, the permittee shall correct the inaccurate or misleading information or supply the omitted information in writing to the Commissioner. Such information shall be filed in accordance with the certification requirements prescribed in Section 7(e) of this general permit.

(i) Other Applicable Law

Nothing in this general permit shall relieve the permittee of the obligation to comply with any other applicable federal, state and local law, including but not limited to the obligation to obtain any other authorizations required by such law. Bureau of Materials Management & Compliance Assurance 1/12/16 DEEP-WPED-GP-021 16 of 17

(j) Other Rights

This general permit is subject to and does not derogate any present or future rights or powers of the State of Connecticut and conveys no rights in real or personal property nor any exclusive privileges, and is subject to all public and private rights and to any federal, state, and local laws pertinent to the property or activity affected by such general permit. In conducting any activity authorized hereunder, the permittee may not cause pollution, impairment, or destruction of the air, water, or other natural resources of this state. The issuance of this general permit shall not create any presumption that this general permit should or will be renewed.

Section 8. Commissioner's Powers

(a) Abatement of Violations

The Commissioner may take any action provided by law to abate a violation of this general permit, including but not limited to penalties of up to $25,000 per violation per day under Chapter 446k of the Connecticut General Statutes, for such violation. The Commissioner may, by summary proceedings or otherwise and for any reason provided by law, including violation of this general permit, revoke a permittee's authorization hereunder in accordance with Sections 22a-3a-2 through 22a-3a-6, inclusive, of the Regulations of Connecticut State Agencies. Nothing herein shall be construed to affect any remedy available to the Commissioner by law.

(b) General Permit Revocation, Suspension, or Modification

The Commissioner may, for any reason provided by law, by summary proceedings or otherwise, revoke or suspend this general permit or modify to establish any appropriate conditions, schedules of compliance, or other provisions which may be necessary to protect human health or the environment.

(c) Filing of an Individual Application

If the Commissioner notifies a permittee in writing that such permittee shall obtain an individual permit under Section 22a-430 of the Connecticut General Statutes if he wishes to continue lawfully conducting the authorized activity, the permittee shall file an application for an individual permit within thirty (30) days of receiving the Commissioner’s notice, or at such other date as the Commissioner may allow. While such application is pending before the Commissioner, the permittee shall comply with the terms and conditions of this general permit and the subject approval of registration. If the Commissioner issues an individual permit to a permittee under this general permit, this general permit, as it applies to such permittee, shall automatically terminate on the date such individual permit is issued. Nothing herein shall affect the Commissioner's power to revoke a permittee's authorization under this general permit at any time.

Issued Date: January 12, 2016 Michael Sullivan Deputy Commissioner This is a true and accurate copy of the general permit executed on January 20, 2016 by the Department of Energy and Environmental Protection.

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Appendix A

Connecticut Towns with Urbanized Areas Andover* Ansonia Avon Beacon Falls Berlin Bethany Bethel Bloomfield Bolton Bozrah* Branford Bridgeport Bristol Brookfield Burlington Canterbury* Canton Cheshire Chester Clinton Coventry* Cromwell Danbury Darien Deep River Derby Durham East Granby East Hampton* East Hartford East Haven East Lyme East Windsor Easton Ellington Enfield Essex Fairfield Farmington Franklin* Glastonbury Granby Greenwich Griswold Groton Guilford Haddam* Hamden Hartford Hebron Killingworth* Ledyard Lisbon Litchfield* Lyme* Madison Manchester Marlborough Meriden Middlebury Middlefield Middletown Milford Monroe Montville Naugatuck New Britain New Canaan New Fairfield New Hartford* New Haven New London New Milford Newington Newtown North Branford North Haven Norwalk Norwich Old Lyme Old Saybrook Orange Oxford Plainfield* Plainville Plymouth Portland Preston* Prospect Putnam Redding Ridgefield Rocky Hill Salem* Seymour Shelton Sherman* Simsbury Somers South Windsor Southbury Southington Sprague* Stafford* Stonington Stratford Suffield Thomaston Thompson Tolland Trumbull Vernon Wallingford Washington* Waterbury Waterford Watertown West Hartford West Haven Westbrook Weston Westport Wethersfield Wilton Windsor Windsor Locks Wolcott Woodbridge Woodbury Woodstock*

*Denotes town with population less than 1,000 in the Urbanized Area.

Bureau of Materials Management & Compliance Assurance 1/12/16 DEEP-WPED-GP-021A

Appendix B

Public Education and Outreach on Stormwater Impacts

F:\P1989\89272\T58\2015 Annual MS4 Report\2015 - SWMP - Annual MS4 Report.Docx

F:\P1989\89272\T58\2015 Annual MS4 Report\Attachments\App B - 3 - Enfield - Water Pollution Control Plant Web Page.Docx Water Pollution Control Mission: Our mission is to protect public health and the environment for our communities by providing high-quality wastewater-treatment services in an effective, efficient, and responsive manner.

• Established in 1938 •Upgraded in 1972 •10 Million Gallon a day capacity •Treated over 77 billion gallons since 1972 •5564 Tons of biosolids a year •250 Miles of sewer line •16 pump stations •13 employees K:\Administration\Presentations

Collection System

250 miles of sanitary sewer line( gravity and force mains, some date back before 1938) Clay (1900 to 1960), orangeberg (tar paper) (1940s to 1960s) ,concrete (1960s to present day) and cast iron (1938 to present) PVC (1970s to present day) 50 miles of trunk line in wooded areas Approximately 4500 manholes Treatment Plant Pump Stations

Most equipment is original from 1972 Preliminary, Primary, Biological Nutrient Removal, Final Settling and Chlorine Contact National Pollution Discharge Elimination System Permit(CT DEEP via EPA) Moves wastewater from low lying areas to higher point Since 1972 more complex regulations from Environmental Protection Agency 16 pump station with generators Notice of Violations from EPA in 2010 4 Major pump station (Built before 1970 (3), South River 1938) 12 minor pump stations(3 built before 1970, 9 built after 1970)

Notice of Violations Facilities Plan

Notice of Violation from EPA in 2010 Air scrubbing unit Primary inflow gate 55% Grant from CT DEEP for facilities planning Bar rack rag compactor Two year comprehensive study of treatment plant and New Permit November 2013 collection system 4 years to correct violations Guide for next 20 years for Water Pollution Control Authority 2011/2012 Water Pollution Control Authority decides to have 2 year study done that Access to CT DEEP Clean water fund grants and loans looks at treatment plant and collection system, facilities plan K:\Administration\Presentations 2014-2015 Projects 2014-2015 Sewer Relining project

Pump station equipment upgrades Cast-In-Place-Pipe Sewer camera upgrade Most economical solution Biosolids container replacement John Street Sewer relining projects Southwood Road Future streets

Public Events

Future open houses once a month River cleanup Earth Day Celebration Wastewater Treatment Appreciation Day(National Public Works Week) Water Pollution Control Mission: Our mission is to protect public health and the environment for our communities by providing high-quality wastewater-treatment services in an effective, efficient, and responsive manner.

• Established in 1938 •Upgraded in 1972 •10 Million Gallon a day capacity •Treated over 77 billion gallons since 1972 •5564 Tons of biosolids a year •250 Miles of sewer line •16 pump stations •13 employees K:\Administration\Presentations

Collection System

250 miles of sanitary sewer line( gravity and force mains, some date back before 1938) Clay (1900 to 1960), orangeberg (tar paper) (1940s to 1960s) ,concrete (1960s to present day) and cast iron (1938 to present) PVC (1970s to present day) 50 miles of trunk line in wooded areas Approximately 4500 manholes Treatment Plant Pump Stations

Most equipment is original from 1972 Preliminary, Primary, Biological Nutrient Removal, Final Settling and Chlorine Contact National Pollution Discharge Elimination System Permit(CT DEEP via EPA) Moves wastewater from low lying areas to higher point Since 1972 more complex regulations from Environmental Protection Agency 16 pump station with generators Notice of Violations from EPA in 2010 4 Major pump station (Built before 1970 (3), South River 1938) 12 minor pump stations(3 built before 1970, 9 built after 1970)

Notice of Violations Facilities Plan

Notice of Violation from EPA in 2010 Air scrubbing unit Primary inflow gate 55% Grant from CT DEEP for facilities planning Bar rack rag compactor Two year comprehensive study of treatment plant and New Permit November 2013 collection system 4 years to correct violations Guide for next 20 years for Water Pollution Control Authority 2011/2012 Water Pollution Control Authority decides to have 2 year study done that Access to CT DEEP Clean water fund grants and loans looks at treatment plant and collection system, facilities plan K:\Administration\Presentations 2014-2015 Projects 2014-2015 Sewer Relining project

Pump station equipment upgrades Cast-In-Place-Pipe Sewer camera upgrade Most economical solution Biosolids container replacement John Street Sewer relining projects Southwood Road Future streets

Public Events

Future open houses once a month River cleanup Earth Day Celebration Wastewater Treatment Appreciation Day(National Public Works Week)

Appendix C

Public Involvement and Participation

F:\P1989\89272\T58\2015 Annual MS4 Report\2015 - SWMP - Annual MS4 Report.Docx Courant Community / Middletown Volunteers Help 'Source To Sea' River Cleanup Effort

Kent Ritter, an environmental analyst with Connecticut Valley Hospital, picks up trash on the banks of the Connecticut River during the 19th annual Connecticut River Watershed Council Source to Sea Cleanup. (Mark Mirko / Hartford Courant)

By Sh awn R. B eals • Contact Reporter

SEPTEMBER 25, 2015, 6:40 PM

y the end of this weekend, hundreds of volunteers are expected to have removed an estimated 40 B tons of garbage from the Connecticut River and its tributaries, from the river's source near the Canadian border to its terminus in Long Island Sound.

They are participating in the Connecticut River Watershed Council's 19th annual Source to Sea cleanup that gathers groups from Vermont, New Hampshire, Massachusetts and Connecticut to collect trash and debris that would otherwise wash into the river and into the ocean.

ADVERTISING inRead invented by Teads

"Trash and litter in our rivers belongs to everyone, and it's everyone's responsibility to keep it clean, not just two days a year but every day of the year," said Alicea Charamut, lower river steward for the Connecticut River Watershed Council.

She said the yearly trash collection has made an impact on the way the river looks, but also on the global ecology.

The council asks the volunteer groups to record and later report the number of bottles, tires and other materials they collect so it can keep data on the types and sources of the trash.

"This is more than just two days for our organization," Charamut said. "We ask the groups to tally their data and we use that to help shape policy to keep trash out of the waterways."

In Middletown Friday, several groups gave Saturday's cleanup a head start. Volunteers from Connecticut Valley Hospital, Pratt & Whitney, NRG Energy and residents participated in a cleanup organized by the city in the area around Harbor Park where trash typically accumulates.

Mayor Daniel Drew said the city has been organizing cleanup events with the Connecticut River Watershed Council for three years and has increased its volunteer count each year.

"It's something we consider to be really important because we've been working really hard on riverfront development for years now," Drew said. "No matter where people dump garbage, it makes its way into our waterways. We have a moral responsibility to keep our environment as healthy as possible, and if everyone does a little bit locally it will have a tremendous impact." City environmental specialist, James Sipperly, said last year, groups working with the city collected three pickup trucks full of large debris like furniture, and 88 garbage bags full of trash, plastic bottles and foam cups.

Volunteers from Connecticut Valley Hospital cleaned up the banks along River Road, south of Harbor Park, where illegal dumping is a constant problem.

CVH rehabilitation therapist Charleen Hunter said staff and clients picked up a toilet, tires and a television along with bags of trash.

"It's a nice chance to give back to the community," Hunter said. "We enjoy the water and we'd like to keep enjoying it."

The Scantic River Watershed Association in Enfield will clean up the Connecticut River, Freshwater Brook, Freshwater Pond and the Scantic River on Saturday, the 16th year the group has coordinated volunteers.

Karen LaPlante, a member of the Scantic association, said the annual trash collections have made a difference.

"Initially, it was years and years of stuff that had accumulated, but now it's whatever comes each year," LaPlante said. "People dump all kinds of things, tires and rims, tubs and toilets, on the roads along the river because they're isolated."

The Scantic group will meet volunteers at the boat launch on South River Street at 8:30 a.m.

In Manchester, the Hockanum River Linear Park Committee will clean up Union Pond from 9 a.m. to noon, and in Hartford, a group will clean up the area where the Park River and Connecticut River meet, from 10 a.m. to 1 p.m. Other volunteers will work in West Hartford, Windsor and along the Farmington River.

A list of registered groups is available at ctriver.org/projects/source-to-sea-cleanup.

Charamut said 84 groups were registered in all four states, with 33 of them in Connecticut. She said the Connecticut River Watershed Council expects other groups to join registered groups on Saturday, and won't have an official tally of how many people participated in the event for a few weeks.

Copyright © 2016, Courant Community

Along Enfield's Hidden Scantic River Linear Trail

June 27, 2013 | Peter Marteka, Nature's Path & Way To Go

Whenever I am out in the natural world, I listen for the roar. Not the call of lions, tigers and bears, but the sound of waterfalls dropping over rock chasms or rapids tumbling along a river. And there is plenty of roaring as you navigate the trails of the Scantic River Linear Park West in Enfield.

The Scantic River is a lot like the Hockanum River, which that flows through Vernon, Manchester and East Hartford. Both located along highly developed stretches of busy roads, the rivers flow forgotten through the towns. But if you find the time to seek them out, you will wonder how you missed them.

Located along Route 190 in the Hazardville section of Enfield, this portion of the Scantic River Greenway includes scenic views of the river, a farm, a forest filled with huge white pines, banks lined with blooming daylilies and several thundering rapids.

When you arrive at the parking area, you will find one of the more unusual sights at the trailhead – a basketball rim nailed to the tree with bark wrapping around it. From here, the trail descends to the river, past gorges and a large field. The sounds of the first set of rapids draw visitors to the banks of the river along one of the many side trails that showcase this portion of the 38-mile-long waterway, which winds from its headwaters in Massachusetts to its confluence with the Connecticut River in South Windsor.

The first side trail to the river leads to a high embankment overlooking the waterway and a fairly calm stretch of the Scantic. Several benches line the top of the bank, giving visitors a chance to enjoy the peacefulness of this section of the river. The river is fairly shallow in this area, for those who want to kick off their hiking boots and explore the trails on the other side of the Scantic. From the benches, the one-mile loop trail winds high above the river with several openings in the forest providing viewing areas of the clear-running river. The trail passes through a deep pine forest before returning to the banks of the river, which runs placidly past a cattle farm. It is here where you begin to hear the sounds of what is known as "Stockers Rapids." A side trail takes visitors past an abandoned building to an old, crumbling asphalt road. The road leads to an overlook of the rapids and a broken dam in the forest. The water plunges loudly over several high rock ledges and through a chasm, leaving visitors with an appreciation of the power of the Scantic and why it was so highly desired by factory owners.

Hazardville was once home to some of the largest gunpowder factories in the country, supplying gunpowder for the Mexican War, Civil War and the California gold rush – an industry that also had many deadly explosions. Today, this section of the Scantic River is known for its quiet and peacefullness – a forgotten escape along a busy road.

The Scantic River Linear Park is located along Route 190 (Hazard Avenue) directly across the street from Holiday Lane.

Peter Marteka may be reached at 860-647-5365, at pmarteka@ courant.com or at The Courant, 200 Adams St., Manchester,CT 06040. http://articles.courant.com/2013-06-27/community/hc-marteka-enfield-scantic-river-0630-... 9/23/2014

Appendix D

Illicit Discharge Detection and Elimination

F:\P1989\89272\T58\2015 Annual MS4 Report\2015 - SWMP - Annual MS4 Report.Docx

1. Home 2. Your Government 3. Departments I - Z 4. Refuse & Resource Management 5. Hazardous Waste Hazardous Waste

Disposal Dates The Town is working to provide bi-annual Household Hazardous Waste days. The next disposal date is planned for April 23, 2016 from 8 am - 1 pm. View for a list of accepted and not accepted items (PDF). DPW is exploring additional opportunities for Enfield residents to dispose of hazardous waste.

Residents are encouraged to use this opportunity for safe disposal of solvents, thinners, oil based paints, antifreeze, pesticides, gasoline, etc.

Residents must provide proof of residency in order to participate in this program.

Details regarding hazardous waste collection are published in local newspapers or can be obtained by calling 860-763-7527.

Paint Latex or water based paints are not considered hazardous waste. Paint must be left to dry to a solid and can be picked up on a regular refuse collection. The lids should NOT be on the cans when they are disposed of.

Latex and oil based paint can be recycled year round at Sherwin-Williams, 85 Freshwater Boulevard, Enfield, 860-745-2459. For more information, please visit the Sherwin-Williams website.

Light Bulbs Energy efficient bulbs and fluorescent type bulbs are considered household hazardous waste and must be disposed of in a safe manner.

Propane Tanks Propane tanks may be dropped off at the Enfield Fire Station 2 at 199 Weymouth Road between 7 a.m. and 4 p.m., Monday - Friday. Please call ahead at 860-741-3114. Notify Me

Household Hazardous Waste Collection Events What to Bring – Items Accepted

Paints & Solvents Glues & Cements Oil based paint Resins Stains Rosins Varnishes Adhesives Paint Thinners Rubber Cement Paint Strippers Airplane Glue Dry Cleaning Solvents Sealants

Cleaning Supplies Automotive & Marine Wood Preservatives Engine Degreasers Furniture Polish Kerosene Floor Polish Gasoline Metal Polish Fuel Oil - limit 10 gallons or less Oven Cleaners Carburetor Cleaners Drain Cleaners Brake Fluids Full or Partially Full Aerosol Cans Transmission Fluids Spot Removers Car Waxes Rug Cleaner Engine and Radiator Flushes Upholstery Cleaner Radiator Cleaners Septic Tank Degreasers Dry Cleaning Fluids

Hobby Supplies Products With Mercury Chemistry Sets Mercury Fever Thermometers Airplane Glue Mercury Temperature Thermometers Photography Chemicals Thermostats Containing Mercury Formalin (Formaldehyde) Fluorescent Lightbulbs Camera Batteries CFL Lightbulbs Arts & Crafts Supplies Wood Strippers

Other Household Items Outdoor Household Items Flea Powder Pesticides Moth Balls Garden Fungicides Lighter Fluids Plant Insect Killer Indoor Insecticides Slug Poison Rechargeable (Ni-Cd) Batteries Weed Killer Ant/Roach Killer Weed and Feed Lawn Products Lice Shampoo Swimming Pool Chemicals Rodent Killers Herbicides Muriatic Acid Creosote Driveway Sealant – coal tar based What NOT To Bring – Items Advertised As Not Accepted

Latex Paints These can be brought to a local paint retailer for recycling. Visit www.paintcare.org for a location near you.

Confidential Documents There will be a separate town sponsored confidential document collection opportunity on June 21. More details to follow.

Items That Can Go In the Regular Garbage Household Batteries – AA, C, D cells, and all non-rechargeable batteries Empty Aerosol Cans Smoke Detectors – Can also be returned to manufacturer

Items That Can Be Recycled at Local Drop Off/Recycling Centers Motor Oil Automobile Batteries Tires PCB Capacitors Empty Fire Extinguishers Computers and other Consumer Electronics

Items Requiring Special Handling Ammunition, Fireworks, Explosives – Contact the local Police Department Radioactive Materials Unknown Gases Controlled Substances Pathological Material Pharmaceutical Waste Medical Waste Propane Tanks

Appendix E

Construction Site Stormwater Runoff Controls

F:\P1989\89272\T58\2015 Annual MS4 Report\2015 - SWMP - Annual MS4 Report.Docx F:\P1989\89272\T51\006 - MS4 CY 2014\App E-2 - Enfield - Planning & Zoning Commission.Docx Contract

F:\P1989\89272\T51\006 - MS4 CY 2014\App E - Enfield Conservation Commission - Web Page.Docx

F:\P1989\89272\T51\006 - MS4 CY 2014\App E- Enfield Inland Wetlands And Watercourse Agency.Docx

Appendix F

Post-Construction Stormwater Management in New Development and Redevelopment

No Inserts – Appendix F purposefully left blank

F:\P1989\89272\T58\2015 Annual MS4 Report\2015 - SWMP - Annual MS4 Report.Docx

Appendix G

Pollution Prevention and Good Housekeeping for Municipal Operations

F:\P1989\89272\T58\2015 Annual MS4 Report\2015 - SWMP - Annual MS4 Report.Docx February 19, 2008

Enfield Town Council Matthew W. Coppler, Town Manager

Subject: EROSION & DRAINAGE REPORT

Councilors:

Background: Since November 2007, Town Staff has been developing a comprehensive report on erosion and drainage concerns by location in Enfield. To our knowledge, this is the first time a report of this nature has been prepared.

As will be observed from the report, despite tremendous progress to correct roadside drainage issues through the Road 2000 and Road 2005 programs, a substantial amount of work still needs to be done. This can be attributed to:

 The size of Enfield.  The number of paved roads in the community.  The substantial amount of development which has occurred.  The presence of escarpments soils which are unique to this area and highly susceptible to erosion.

Attached to this cover memo are two reports:

 Power-point printout which is a detailed listing of the projects, their locations, problems, and general cost estimates.  A listing of the projects which includes their estimated costs , priority rankings, and whether they are located on public or private property.

In reading the attached reports, it should be noted that erosion and drainage issues have been identified for both public and privately-owned properties. However, the funding strategy being recommended reflects work on land which the Town of Enfield owns, or has easements to maintain.

Organization: Projects identified in this report have been organized into four categories:

 Erosion Problem Areas.  Flooding Problem Areas.  Street Drainage Areas.  Other Drainage Issues. The projects within each of these categories were prioritized by the work team in terms of the severity of their problem. Taken into consideration was the public safety risk of potential damages to infrastructure, buildings, and dwellings.

Cost estimates have been developed and three cost groupings created as follows:

 Group A - Individual projects which cost less than $50,000. The total cost estimate to publicly-owned property in Group A is $200,100.  Group B - Individual projects which cost between $50,000 and $300,000. The total cost to publicly-owned property in Group B is $1,017,750.  Group C - Individual projects which cost in excess of $300,000. The cost estimate to publicly-owned property in Group C is $4,128,500.

Cost & Funding Strategy:

In summary, there is an estimated $5,346,350 of erosion and drainage work to publicly-owned lands which has been identified in this report. An additional $1,716,950 of work to privately- owned property has also been listed.

In developing a strategy to fund work on publicly-owned land, it is recommend that a combined, "pay as you go" and "pay over time" concept be employed. This concept consists of the following:

 Establish an on-going account in the Capital Improvement Budget for erosion and drainage maintenance work. It is recommended that $100,000 be appropriated annually to this account. This account can be used to address individual projects which cost less than $50,000 (Cost Group A).  Appropriate approximately $340,000 per year for the next 3 fiscal years to address individual projects which cost between $50,000 and $300,000 (Cost Group B). By doing so, it is possible to fund those projects within this group in approximately 3 fiscal years.  Develop a referendum question for Election Day on November 4, 2008 to authorize bonding to address those projects which cost over $300,000 (Cost Group c).

A detailed funding schedule can be found in the Power-point printout .

Summary:

It should be noted that Town Staff developed this report. No consultants were engaged.

The individuals who participated in this Team project deal with erosion and drainage concerns on a daily basis. It was also instrumental to have representatives from the Town Attorney's Office, Risk Management, and Finance Department as part of this Team effort.

Staff will be available for follow-up work based on feedback and direction received from the Town Council and the Town Manager. Link to: Slideshow Estimated Costs

Respectfully Submitted,

Daniel T. Vindigni Assistant Town Manager

Enfield Connecticut Announces New Partnership with Online, Mobile Citizen Reporting ... Page 1 of 2

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► 2014 (23) Enfield, Conn. -- The Town of Enfield has launched a new program that will allow residents to report quality-of- life issues and request city services through an online and mobile interface. Powered by SeeClickFix, the place- ► 2013 (119) based reporting platform allows residents to document neighborhood concerns and improvements alike, ranging from potholes and graffiti to damaged sidewalks and storm damage. ▼ 2012 (121)

"As new technology continues to emerge, it's important for governments to start embracing the innovative ways ► December (7) they can now communicate with citizens and effect change in the communities we serve," said Matthew Coppler, Town Manager. "This social customer service tool will allow us to accomplish both—and more." ► November (9)

With the online and mobile reporting platform, residents can report quality-of-life concerns through service ► October (8) request categories via the Enfield website, custom mobile applications (iPhone, Android, Blackberry), Facebook App, and SeeClickFix.com. When submitting issues via mobile app, for example, residents can provide ► September (10) locational, descriptive, and photographic information as they see the issue in real time. Once the resident submits an issue, the reporter, Enfield, and anyone 'watching' the area will receive an alert. The town can then ► August (13) acknowledge the service request, route it to the proper department, and update the request—and residents following the issue—once it's been resolved. ► July (12) The partnership allows residents to not only report community issues, but also view, comment on, and vote to fix ► problems submitted by their neighbors. Citizens can even create their own "watch areas" to receive notifications June (12) about all issues reported in their community, enabling them to follow the progress of all service requests---not just the ones they report. ▼ May (7)

SeeClickFix partners with FindMyAccident "Being based in Connecticut, we're incredibly excited to see the Town of Enfield join surrounding communities as they use the collective power of technology, citizens, and government to improve quality of life and promote Join the SeeClickFix Team Open Position: active citizenship," said Ben Berkowitz, SeeClickFix CEO. "Through our platform, the town offers broader Media Par... accessibility for reporting issues, strengthens its lines of communication with residents, and works towards resolution." Innovation Space Crawl Tonight The Enfield SeeClickFix website can be found at http://www.enfield-ct.gov and residents can download iPhone, Android, and Blackberry apps here: http://www.seeclickfix.com/apps. Knope Award: Dylan Bakley, Atlantic County Utility... About SeeClickFix Spring Cleaning with SeeClickFix SeeClickFix allows citizens anywhere in the world to report and monitor non-emergency community issues

http://seeclickfix.blogspot.com/2012/05/enfield-connecticut-announces-new.html 9/23/2014 Enfield Connecticut Announces New Partnership with Online, Mobile Citizen Reporting ... Page 2 of 2

ranging from potholes and planted trees to garbage and graffiti. Launched in 2008, it empowers citizens, Enfield Connecticut Announces New community groups, media organizations, and governments to work together and improve their neighborhoods. Partnership with... Through mobile web, web, iPhone, Android, and Blackberry apps, the SeeClickFix platform is the most widely- distributed citizen reporting tool in the country. SeeClickFix supports the Open311 standard that promotes SeeClickFix and Temporary Cities improved communication between local municipalities and the citizens they serve. The platform is fun and easy to use for citizens while being inexpensive and easily adaptable for governments. Over 60 percent of issues reported on SeeClickFix are ultimately resolved. For more information or to report an issue, visit ► April (13) http://www.seeclickfix.com. ► March (11)

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http://seeclickfix.blogspot.com/2012/05/enfield-connecticut-announces-new.html 9/23/2014 F:\P1989\89272\T51\006 - MS4 CY 2014\App G-3 - On Demand Reporting - Article.Docx Contract F:\P1989\89272\T51\006 - MS4 CY 2014\App G-3 - On Demand Reporting - Article.Docx Contract F:\P1989\89272\T51\006 - MS4 CY 2014\App G-4 - Report Concern - Request Tracker - Web Page.Docx Contract

F:\P1989\89272\T58\2015 Annual MS4 Report\Attachments\App G-5 - Report Concern Submittal page.docx

Appendix H

Outfall Monitoring

F:\P1989\89272\T58\2015 Annual MS4 Report\2015 - SWMP - Annual MS4 Report.Docx Summary of Stormwater Monitoring Report Form Completions MS4 General Permit Representative Outfalls Enfield, Connecticut Feb 2015

Non-Point Source Storm water Monitoring Locations (1) Annual Sampling Event Date (2) Area CY 2012 CY 2013 CY 2014 CY 2015 Description ID N W Receiving Water 10/19/2012 4/30/2014 11/17/2014 12/2/2015

Unnamed Tributary, Sub Region Sampling Sampling Sampling Sampling Industrial I-1 42.009 -72.534 Freshwater Brook completed completed completed completed

Freshwater Brook, Sub Region Sampling Sampling Sampling Sampling Industrial I-2 41.986 -72.583 Freshwater Brook completed completed completed completed

Unnamed Tributary, Sub Region Sampling Sampling Sampling Sampling Commercial C-1 41.988 -72.512 Freshwater Brook completed completed completed completed

Freshwater Brook, Sub Region Sampling Sampling Sampling Sampling Commercial C-2 41.992 -72.577 Freshwater Brook completed completed completed completed

Grape Brook, Sub Region Sampling Sampling Sampling Sampling Residential R-1 42.006 -72.578 Connecticut River completed completed completed completed

Beemans Brook, Sub Region Sampling Sampling Sampling Sampling Residential R-2 41.968 -72.603 Connecticut River completed completed completed completed

SMR Completed? Yes Yes Yes Yes SMR Signed by Town of Enfield Representative? Authorized Official Named: Kevin Shlatz Kevin Shlatz Kevin Shlatz Kevin Shlatz DEEP Date stamp on signed SMR copy?

References: 1. CT DEEP General Permit Registration # GSM 000086 2. Completed per MS-4 General Permit, Item 3: Illicit DischargeDetection and Elimination Control Measures

F:\P1989\89272\T58\2015 Annual MS4 Report\Attachments\App H - 1 - CY 2012 & 2013 & 2014 & 2015 MS-4 Stormwater Monitoring Summary.xlsx CY 2012 Annual Analytical Results MS-4 General Permit Representative Outfalls Town of Enfield

Sample Date: 10/19/2012 9:00 Company: ESS Group, Inc. Sampler: Collin Smythe Laboratory: Premier Laboratory - Dayville, CT Location: C-1 C-2 I-1 I-2 R-1 R-2 Parameter Method Results Units Results Results Results Results Results Results Sample pH SM 4500-H+B pH units 6.10 4.60 4.00 4.10 6.60 2.80 Rain pH Field pH units 5.90 5.90 5.90 5.90 5.90 5.90 Hardness SM-2340B mg/L 19.00 8.90 2.70 4.90 31.00 6.20 Conductivity SM2510B umhos/cm 59 78 59 62 170 1,200 Oil & Grease 1664A mg/L <1.0 1.00 <1.0 1.20 <1.0 <1.0 SM5220-D/Hach mg/L 100.00 42.00 14.00 41.00 30.00 20.00 COD 8000 Turbidity SM2130B NTU 3.90 22.00 2.20 25.00 57.00 2.70 TSS SM2540D mg/L 13.00 12.00 1.00 23.00 42.00 3.00 TP 365.1 mg/L 0.68 0.05 0.07 0.10 0.11 0.10 Ammonia 350.1 mg/L 0.20 0.32 0.08 0.30 0.16 0.13 TKN 351.1 mg/L 1.30 0.76 <0.50 0.59 0.65 <0.50 NO3+NO2 SM4500-NO3F mg/L <0.050 0.23 0.11 0.16 0.56 0.13 E. coli EPA Mod 1603 col/100mL 6,200 1,240 5,000 150 9,100 930

C - Commercial Outfall Locations I - Industrial Outfall Locations R - Residential Outfall Locations

F:\P1989\89272\T51\004 - MS4 CY 2012 & CY 2013\App H-2 2012 MS4 Stormwater Monitoring Results CY 2013 Annual Analytical Results MS-4 General Permit Representative Outfalls Town of Enfield

Sample Date: 4/30/2014 11:15 Company: ESS Group, Inc. Sampler: Alex Patterson Laboratory: Phoenix Laboratory - Manchester, CT Location: C-1 C-2 I-1 I-2 R-1 R-2 Parameter Method (units) Results Results Results Results Results Results Sample pH SM 4500-H+B pH units 7.33 7.19 5.81 7.08 6.92 7.44 Rain pH Field ph units 5.5 5.5 5.5 5.5 5.5 5.5 Hardness E200.7 mg/L 72.7 5.15 4.9 49.6 37.9 74.2 Conductivity SM2510B umhos/cm 226 285 50 322 252 348 Oil & Grease 1664A mg/L <1.4 <1.4 <1.4 <1.4 <1.4 <1.4 SM5220-D/Hach COD 8000 mg/L 19 <10 11 15 <10 30 Turbidity SM2130B NTU 1.6 3.98 12.4 3.14 7.21 4.09 TSS SM2540D mg/L <5.0 6.5 15 <5.0 9 <5.0 TP SM4500P E mg/L 0.07 0.05 0.12 0.03 0.05 0.04 Ammonia 350.1 mg/L 0.08 0.1 0.19 0.13 0.12 0.09 TKN 351.1 mg/L 1.03 0.59 0.8 0.52 0.64 1.05 NO3+NO2 353.2 mg/L 2.25 0.49 0.1 0.23 0.96 0.64 E. coli SM 9223B MPN/100 mL 20 90 90 420 500 9120

C - Commercial Outfall Locations I - Industrial Outfall Locations R - Residential Outfall Locations

Results noted to be outside normal range.

F:\P1989\89272\T51\004 - MS4 CY 2012 & CY 2013\App H-3 2013 MS4 Stormwater Monitoring Results CY 2014 Annual Analytical Results MS4 General Permit Representative Outfalls Town of Enfield

Sample Date: 11/17/2014 11:15 Company: ESS Group, Inc. Sampler: Stephanie Martin Laboratory: Phoenix Laboratory - Manchester, CT Location: C-1 C-2 I-1 I-2 R-1 R-2 Parameter Method (units) Results Results Results Results Results Results Sample pH SM 4500-H+B pH units 7.56 7.27 6.71 6.72 7.01 6.82 Rain pH Field ph units 6 6 6 6 6 6 Hardness E200.7 mg/L 69.8 46.4 3.7 7.8 20.4 7.1 Conductivity SM2510B umhos/cm 195 196 16 51 105 20 Oil & Grease 1664A mg/L <1.4 <1.4 <1.4 <1.4 <1.4 <1.4 SM5220-D/Hach COD 8000 mg/L 21 14 10 16 29 16 Turbidity SM2130B NTU 3.2 6.08 5.05 4.03 8.22 2.78 TSS SM2540D mg/L 6 8.5 14 <5.0 <5.0 8 TP SM4500P E mg/L 0.12 0.06 0.07 0.06 0.1 0.06 Ammonia 350.1 mg/L 0.07 0.09 0.17 0.06 0.12 0.22 TKN 351.1 mg/L 0.5 0.41 0.42 0.29 0.44 0.44 NO3+NO2 353.2 mg/L 1.81 0.48 0.15 0.11 0.5 0.14 E. coli SM 9223B MPN/100 mL 5480 1180 420 50 50 4110

C - Commercial Outfall Locations I - Industrial Outfall Locations R - Residential Outfall Locations

Results noted to be outside normal range.

F:\P1989\89272\T51\006 - MS4 CY 2014\App H-2 2014 MS4 Stormwater Monitoring Results CY 2015 Annual Analytical Results MS4 General Permit Representative Outfalls Town of Enfield

Sample Date: 12/2/2015 8:00 Company: ESS Group, Inc. Sampler: James Treacy Laboratory: Phoenix Laboratory - Manchester, CT

Location: C-1 C-2 I-1 I-2 R-1 R-2 Parameter Method (units) Results Results Results Results Results Results Sample pH SM 4500-H+B pH units 7.22 7.32 6.32 7.19 6.80 7.25 Rain pH Field ph units 7.86 7.86 7.86 7.86 7.86 7.86 Hardness E200.7 mg/L 136 89.8 1.8 49.5 62.1 109 Conductivity SM2510B umhos/cm 269 251 11 230 284 302 Oil & Grease 1664A mg/L <1.4 <1.4 <1.4 <1.4 <1.4 <1.4 SM5220-D/Hach COD 8000 mg/L 10 10 17 14 <10 14 Turbidity SM2130B NTU 0.84 2.8 0.69 2.7 3.5 3.2 TSS SM2540D mg/L <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 TP SM4500P E mg/L 0.06 0.04 0.03 0.03 0.05 0.03 Ammonia 350.1 mg/L <0.05 0.08 <0.05 <0.05 <0.05 <0.05 TKN 351.1 mg/L 0.62 0.45 0.18 0.25 0.36 0.43 NO3+NO2 353.2 mg/L 2.64 0.57 0.38 0.07 0.94 0.66 E. coli SM 9223B MPN/100 mL 5790 200 50 750 910 3450

C - Commercial Outfall Locations I - Industrial Outfall Locations R - Residential Outfall Locations

Results noted to be outside normal range.

F:\P1989\89272\T58\2015 Annual MS4 Report\Attachments\App H - 2d - 2015 MS4 Stormwater Monitoring Results.xlsx

December 22, 2015

Mr. Kevin Shlatz Superintendent Town of Enfield Water Pollution Control 90 Parsons Road Enfield, Connecticut 06082

Re: 2015 MS4 Stormwater Monitoring Results ESS Project No. E415-011

Dear Mr. Shlatz: ESS Group, Inc. (ESS) is pleased to provide you with the 2015 Municipal Separate Storm Sewer System (MS4) stormwater monitoring results for the Town of Enfield. Stormwater from each of the Town’s six (6) annual monitoring outfalls was collected on December 2, 2015. Two (2) outfalls representative of each of the three (3) required land use categories (residential, commercial, and industrial) were sampled. Additionally, a rainfall pH sample was collected and analyzed in the field. Samples were collected in accordance with the General Permit requirements. Stormwater samples were sent for analysis to Phoenix Environmental Laboratories, Inc. of Manchester, Connecticut, a state-certified laboratory. Sample pH, hardness, conductivity, oil and grease, chemical oxygen demand (COD), turbidity, total suspended solids, total phosphorus, ammonia, total Kjeldahl nitrogen (TKN), nitrate/nitrite, and E. coli were analyzed in accordance with 40 CFR 136, as required by the General Permit. Results of the sampling at each outfall are presented in the attached Stormwater Monitoring Report forms. A copy of the laboratory report and chain-of-custody are also attached. These results are presented for you to review and sign. After signing, the results should be submitted to the Connecticut Department of Energy and Environmental Protection in accordance with the General Permit requirements. Please do not hesitate to contact me at (401) 330-1204 with any questions. Sincerely, ESS GROUP, INC.

Matt Ladewig, CLM Project Scientist

Attachments

© 2015 ESS Group, Inc. General Permit for the Discharge of Stormwater from Small Municipal Separate Storm Sewer Systems Stormwater Monitoring Report Form

Please send completed form to: STORMWATER GROUP BUREAU OF MATERIALS MANAGEMENT & COMPLIANCE ASSURANCE DEPARTMENT OF ENVIRONMENTAL PROTECTION 79 ELM STREET HARTFORD, CT 06106-5127 PERMITTEE INFORMATION

Town: Enfield Mailing Address: Town Hall, 820 Enfield Street, Enfield, CT 06084 Contact Person: Kevin Shlatz Title: Superintendent Phone: 860-253-6450 Permit Registration #GSM: 000086 SAMPLING INFORMATION

Discharge Location (Lat/Long or other description): Sample C-1 N41.98809 W72.5127 (NAD 83) Please check the appropriate area description: Industrial Commercial Residential

Receiving Water (name, basin): Unnamed Tributary, Sub Region Freshwater Brook Time of Start of Discharge: 8:00 Date/Time Collected: 12/02/2015 11:05 Water Temperature: 5°C Person Collecting Sample: James Treacy (ESS Group, Inc.) Storm Magnitude (inches): 0.5 Storm Duration (hours): 32 Date of Previous Storm Event: 11/28/2015 MONITORING RESULTS

Parameter Method Results (units) Laboratory Sample pH 4500-H B 7.22 pH Units Phoenix Rain pH Field 7.86 pH units NA Hardness E200.7 136 mg/L Phoenix Conductivity SM2510B 269 umhos/cm Phoenix Oil & Grease E1664A <1.4 mg/L Phoenix COD SM5220D 10 mg/L Phoenix Turbidity SM2130B 0.84 NTU Phoenix TSS SM2540D <5.0 mg/L Phoenix TP SM4500PE 0.06 mg/L Phoenix Ammonia E350.1 <0.05 mg/L Phoenix TKN E351.1 0.62 mg/L Phoenix NO3+NO2 E353.2 2.64 mg/L Phoenix E. coli SM9223B 5790 MPN/100 mls Phoenix STATEMENT OF ACKNOWLEDGMENT

I certify that the data reported on this document were prepared under my direction or supervision in accordance with the MS4 General Permit. The information submitted is, to the best of my knowledge and belief, true, accurate and complete.

Authorized Official: Kevin Shlatz (Print Name) Signature: Date:

DEP-PERD-SMR-O21 1 of 1 Rev. 08/03/09 General Permit for the Discharge of Stormwater from Small Municipal Separate Storm Sewer Systems Stormwater Monitoring Report Form

Please send completed form to: STORMWATER GROUP BUREAU OF MATERIALS MANAGEMENT & COMPLIANCE ASSURANCE DEPARTMENT OF ENVIRONMENTAL PROTECTION 79 ELM STREET HARTFORD, CT 06106-5127 PERMITTEE INFORMATION

Town: Enfield Mailing Address: Town Hall, 820 Enfield Street, Enfield, CT 06084 Contact Person: Kevin Shlatz Title: Superintendent Phone: 860-253-6450 Permit Registration #GSM: 000086 SAMPLING INFORMATION

Discharge Location (Lat/Long or other description): Sample C-2 N41.9923 W72.577 (NAD 83) Please check the appropriate area description: Industrial Commercial Residential

Receiving Water (name, basin): Freshwater Brook, Sub Region Freshwater Brook Time of Start of Discharge: 8:00 Date/Time Collected: 12/02/2015 10:20 Water Temperature: 4°C Person Collecting Sample: James Treacy (ESS Group, Inc.) Storm Magnitude (inches): 0.5 Storm Duration (hours): 32 Date of Previous Storm Event: 11/28/2015 MONITORING RESULTS

Parameter Method Results (units) Laboratory Sample pH 4500-H B 7.32 pH units Phoenix Rain pH Field 7.86 pH units NA Hardness E200.7 89.8 mg/L Phoenix Conductivity SM2510B 251 umhos/cm Phoenix Oil & Grease E1664A <1.4 mg/L Phoenix COD SM5220D 10 mg/L Phoenix Turbidity SM2130B 2.8 NTU Phoenix TSS SM2540D <5.0 mg/L Phoenix TP SM4500PE 0.04 mg/L Phoenix Ammonia E350.1 0.08 mg/L Phoenix TKN E351.1 0.45 mg/L Phoenix NO3+NO2 E353.2 0.57 mg/L Phoenix E. coli SM9223B 200 MPN/100 mls Phoenix STATEMENT OF ACKNOWLEDGMENT

I certify that the data reported on this document were prepared under my direction or supervision in accordance with the MS4 General Permit. The information submitted is, to the best of my knowledge and belief, true, accurate and complete.

Authorized Official: Kevin Shlatz (Print Name) Signature: Date:

DEP-PERD-SMR-O21 1 of 1 Rev. 08/03/09 General Permit for the Discharge of Stormwater from Small Municipal Separate Storm Sewer Systems Stormwater Monitoring Report Form

Please send completed form to: STORMWATER GROUP BUREAU OF MATERIALS MANAGEMENT & COMPLIANCE ASSURANCE DEPARTMENT OF ENVIRONMENTAL PROTECTION 79 ELM STREET HARTFORD, CT 06106-5127 PERMITTEE INFORMATION

Town: Enfield Mailing Address: Town Hall, 820 Enfield Street, Enfield, CT 06084 Contact Person: Kevin Shlatz Title: Superintendent Phone: 860-253-6450 Permit Registration #GSM: 000086 SAMPLING INFORMATION

Discharge Location (Lat/Long or other description): Sample I-1 N42.009179 W72.53428 (NAD 83) Please check the appropriate area description: Industrial Commercial Residential

Receiving Water (name, basin): Unnamed Tributary, Sub Region Freshwater Brook Time of Start of Discharge: 8:00 Date/Time Collected: 12/02/2015 10:50 Water Temperature: 4°C Person Collecting Sample: James Treacy (ESS Group, Inc.) Storm Magnitude (inches): 0.5 Storm Duration (hours): 32 Date of Previous Storm Event: 11/28/2015 MONITORING RESULTS

Parameter Method Results (units) Laboratory Sample pH 4500-H B 6.32 pH units Phoenix Rain pH Field 7.86 pH units NA Hardness E200.7 1.8 mg/L Phoenix Conductivity SM2510B 11 umhos/cm Phoenix Oil & Grease E1664A <1.4 mg/L Phoenix COD SM5220D 17 mg/L Phoenix Turbidity SM2130B 0.69 NTU Phoenix TSS SM2540D <5.0 mg/L Phoenix TP SM4500PE 0.03 mg/L Phoenix Ammonia E350.1 <0.05 mg/L Phoenix TKN E351.1 0.18 mg/L Phoenix NO3+NO2 E353.2 0.38 mg/L Phoenix E. coli SM9223B 50 MPN/100 mls Phoenix STATEMENT OF ACKNOWLEDGMENT

I certify that the data reported on this document were prepared under my direction or supervision in accordance with the MS4 General Permit. The information submitted is, to the best of my knowledge and belief, true, accurate and complete.

Authorized Official: Kevin Shlatz (Print Name) Signature: Date:

DEP-PERD-SMR-O21 1 of 1 Rev. 08/03/09 General Permit for the Discharge of Stormwater from Small Municipal Separate Storm Sewer Systems Stormwater Monitoring Report Form

Please send completed form to: STORMWATER GROUP BUREAU OF MATERIALS MANAGEMENT & COMPLIANCE ASSURANCE DEPARTMENT OF ENVIRONMENTAL PROTECTION 79 ELM STREET HARTFORD, CT 06106-5127 PERMITTEE INFORMATION

Town: Enfield Mailing Address: Town Hall, 820 Enfield Street, Enfield, CT 06084 Contact Person: Kevin Shlatz Title: Superintendent Phone: 860-253-6450 Permit Registration #GSM: 000086 SAMPLING INFORMATION

Discharge Location (Lat/Long or other description): Sample I-2 N41.98639 W72.5833 (NAD 83) Please check the appropriate area description: Industrial Commercial Residential

Receiving Water (name, basin): Freshwater Brook, Sub Region Freshwater Brook Time of Start of Discharge: 8:00 Date/Time Collected: 12/02/2015 9:30 Water Temperature: 4°C Person Collecting Sample: James Treacy (ESS Group, Inc.) Storm Magnitude (inches): 0.5 Storm Duration (hours): 32 Date of Previous Storm Event: 11/28/2015 MONITORING RESULTS

Parameter Method Results (units) Laboratory Sample pH 4500-H B 7.19 pH units Phoenix Rain pH Field 7.86 pH units NA Hardness E200.7 49.5 mg/L Phoenix Conductivity SM2510B 230 umhos/cm Phoenix Oil & Grease E1664A <1.4 mg/L Phoenix COD SM5220D 14 mg/L Phoenix Turbidity SM2130B 2.7 NTU Phoenix TSS SM2540D <5.0 mg/L Phoenix TP SM4500PE 0.03 mg/L Phoenix Ammonia E350.1 <0.05 mg/L Phoenix TKN E351.1 0.25 mg/L Phoenix NO3+NO2 E353.2 0.07 mg/L Phoenix E. coli SM9223B 750 MPN/100 mls Phoenix STATEMENT OF ACKNOWLEDGMENT

I certify that the data reported on this document were prepared under my direction or supervision in accordance with the MS4 General Permit. The information submitted is, to the best of my knowledge and belief, true, accurate and complete.

Authorized Official: Kevin Shlatz (Print Name) Signature: Date:

DEP-PERD-SMR-O21 1 of 1 Rev. 08/03/09 General Permit for the Discharge of Stormwater from Small Municipal Separate Storm Sewer Systems Stormwater Monitoring Report Form

Please send completed form to: STORMWATER GROUP BUREAU OF MATERIALS MANAGEMENT & COMPLIANCE ASSURANCE DEPARTMENT OF ENVIRONMENTAL PROTECTION 79 ELM STREET HARTFORD, CT 06106-5127 PERMITTEE INFORMATION

Town: Enfield Mailing Address: Town Hall, 820 Enfield Street, Enfield, CT 06084 Contact Person: Kevin Shlatz Title: Superintendent Phone: 860-253-6450 Permit Registration #GSM: 000086 SAMPLING INFORMATION

Discharge Location (Lat/Long or other description): Sample R-1 N42.006929 W72.57819 (NAD 83) Please check the appropriate area description: Industrial Commercial Residential

Receiving Water (name, basin): Grape Brook, Sub Region Connecticut River Time of Start of Discharge: 8:00 Date/Time Collected: 12/02/2015 10:35 Water Temperature: 4°C Person Collecting Sample: James Treacy (ESS Group, Inc.) Storm Magnitude (inches): 0.5 Storm Duration (hours): 32 Date of Previous Storm Event: 11/28/2015 MONITORING RESULTS

Parameter Method Results (units) Laboratory Sample pH 4500-H B 6.80 pH units Phoenix Rain pH Field 7.86 pH units NA Hardness E200.7 62.1 mg/L Phoenix Conductivity SM2510B 284 umhos/cm Phoenix Oil & Grease E1664A <1.4 mg/L Phoenix COD SM5220D <10 mg/L Phoenix Turbidity SM2130B 3.5 NTU Phoenix TSS SM2540D <5.0 mg/L Phoenix TP SM4500PE 0.05 mg/L Phoenix Ammonia E350.1 <0.05 mg/L Phoenix TKN E351.1 0.36 mg/L Phoenix NO3+NO2 E353.2 0.94 mg/L Phoenix E. coli SM9223B 910 MPN/100 mls Phoenix STATEMENT OF ACKNOWLEDGMENT

I certify that the data reported on this document were prepared under my direction or supervision in accordance with the MS4 General Permit. The information submitted is, to the best of my knowledge and belief, true, accurate and complete.

Authorized Official: Kevin Shlatz (Print Name) Signature: Date:

DEP-PERD-SMR-O21 1 of 1 Rev. 08/03/09 General Permit for the Discharge of Stormwater from Small Municipal Separate Storm Sewer Systems Stormwater Monitoring Report Form

Please send completed form to: STORMWATER GROUP BUREAU OF MATERIALS MANAGEMENT & COMPLIANCE ASSURANCE DEPARTMENT OF ENVIRONMENTAL PROTECTION 79 ELM STREET HARTFORD, CT 06106-5127 PERMITTEE INFORMATION

Town: Enfield Mailing Address: Town Hall, 820 Enfield Street, Enfield, CT 06084 Contact Person: Kevin Shlatz Title: Superintendent Phone: 860-253-6450 Permit Registration #GSM: 000086 SAMPLING INFORMATION

Discharge Location (Lat/Long or other description): Sample R-2 N41.968244 W72.60349 (NAD 83) Please check the appropriate area description: Industrial Commercial Residential

Receiving Water (name, basin): Beemans Brook, Sub Region Connecticut River Time of Start of Discharge: 8:00 Date/Time Collected: 12/02/2015 9:50 Water Temperature: 4°C Person Collecting Sample: James Treacy (ESS Group, Inc.) Storm Magnitude (inches): 0.5 Storm Duration (hours): 32 Date of Previous Storm Event: 11/28/2015 MONITORING RESULTS

Parameter Method Results (units) Laboratory Sample pH 4500-H B 7.25 pH units Phoenix Rain pH Field 7.86 pH units NA Hardness E200.7 109 mg/L Phoenix Conductivity SM2510B 302 umhos/cm Phoenix Oil & Grease E1664A <1.4 mg/L Phoenix COD SM5220D 14 mg/L Phoenix Turbidity SM2130B 3.2 NTU Phoenix TSS SM2540D <5.0 mg/L Phoenix TP SM4500PE 0.03 mg/L Phoenix Ammonia E350.1 <0.05 mg/L Phoenix TKN E351.1 0.43 mg/L Phoenix NO3+NO2 E353.2 0.66 mg/L Phoenix E. coli SM9223B 3450 MPN/100 mls Phoenix STATEMENT OF ACKNOWLEDGMENT

I certify that the data reported on this document were prepared under my direction or supervision in accordance with the MS4 General Permit. The information submitted is, to the best of my knowledge and belief, true, accurate and complete.

Authorized Official: Kevin Shlatz (Print Name) Signature: Date:

DEP-PERD-SMR-O21 1 of 1 Rev. 08/03/09 Friday, December 11, 2015

Attn: Mr Matt Ladewig ESS Group Inc. 10 Hemingway Drive 2nd Floor Riverside, RI 02915-2224

Project ID: ENFIELD MS4 STORMWATER Sample ID#s: BK30305 - BK30310

This laboratory is in compliance with the NELAC requirements of procedures used except where indicated.

This report contains results for the parameters tested, under the sampling conditions described on the Chain Of Custody, as received by the laboratory.

A scanned version of the COC form accompanies the analytical report and is an exact duplicate of the original. If you have any questions concerning this testing, please do not hesitate to contact Phoenix Client Services at ext. 200.

Sincerely yours,

Phyllis Shiller Laboratory Director

NELAC - #NY11301 NJ Lab Registration #CT-003 CT Lab Registration #PH-0618 NY Lab Registration #11301 MA Lab Registration #MA-CT-007 PA Lab Registration #68-03530 ME Lab Registration #CT-007 RI Lab Registration #63 NH Lab Registration #213693-A,B VT Lab Registration #VT11301

587 East Middle Turnpike, P.O. Box 370, Manchester, CT 06040 Telephone (860) 645-1102 Fax (860) 645-0823 Environmental Laboratories, Inc. 587 East Middle Turnpike, P.O.Box 370, Manchester, CT 06045 Tel. (860) 645-1102 Fax (860) 645-0823

FOR: Attn: Mr Matt Ladewig Analysis Report ESS Group Inc. December 11, 2015 10 Hemingway Drive 2nd Floor Riverside, RI 02915-2224

Sample Information Custody Information Date Time Matrix: STORM WATER Collected by: 12/02/15 9:50 Location Code: ESSGRPRI Received by: LK 12/02/15 14:49 Rush Request: Standard Analyzed by: see "By" below P.O.#: Laboratory Data SDG ID:GBK30305 Phoenix ID:BK30305 Project ID: ENFIELD MS4 STORMWATER Client ID: R-2 RL/ Parameter Result PQL Units Dilution Date/Time By Reference

Hardness (CaCO3) 109 0.1 mg/L 1 12/03/15 E200.7 Escherichia Coli 3450 10 MPN/100 mls 1 12/02/15 16:55 CB/RMSM9223B-04 Total Coliforms >24200 10 MPN/100 mls 1 12/02/15 16:55 CB/RMSW9223B C.O.D. 14 10 mg/L 1 12/07/15 MSF SM5220D-97 Conductivity 302 5 umhos/cm 1 12/03/15 RR/EGSM2510B-97 Ammonia as Nitrogen < 0.05 0.05 mg/L 1 12/07/15 WHME350.1 Nitrate-Nitrite (N) 0.66 0.01 mg/L 1 12/08/15 CAL E353.2 Oil and Grease by EPA 1664 < 1.4 1.4 mg/L 1 12/04/15 MSF E1664A pH 7.25 0.10 pH Units 1 12/03/15 09:02 RR/EGSM4500-H B-00 Nitrogen Tot Kjeldahl 0.43 0.10 mg/L 1 12/07/15 WHME351.1 Phosphorus, as P 0.03 0.01 mg/L 1 12/03/15 MA SM4500PE-99 Total Suspended Solids < 5.0 5.0 mg/L 1 12/03/15 KH SM2540D-97 Turbidity 3.2 0.20 NTU 1 12/02/15 20:13 RWRSM2130B-01 Total Metals Digestion Completed 12/02/15 AG

Page 1 of 12 Ver 1 Project ID: ENFIELD MS4 STORMWATER Phoenix I.D.: BK30305 Client ID: R-2 RL/ Parameter Result PQL Units Dilution Date/Time By Reference

RL/PQL=Reporting/Practical Quantitation Level ND=Not Detected BRL=Below Reporting Level Comments:

The regulatory hold time for pH is immediately. This pH was performed in the laboratory and may be considered outside of hold- time. If there are any questions regarding this data, please call Phoenix Client Services at extension 200. This report must not be reproduced except in full as defined by the attached chain of custody.

Phyllis Shiller, Laboratory Director December 11, 2015 Reviewed and Released by: Bobbi Aloisa, Vice President

Page 2 of 12 Ver 1 Environmental Laboratories, Inc. 587 East Middle Turnpike, P.O.Box 370, Manchester, CT 06045 Tel. (860) 645-1102 Fax (860) 645-0823

FOR: Attn: Mr Matt Ladewig Analysis Report ESS Group Inc. December 11, 2015 10 Hemingway Drive 2nd Floor Riverside, RI 02915-2224

Sample Information Custody Information Date Time Matrix: STORM WATER Collected by: 12/02/15 9:30 Location Code: ESSGRPRI Received by: LK 12/02/15 14:49 Rush Request: Standard Analyzed by: see "By" below P.O.#: Laboratory Data SDG ID:GBK30305 Phoenix ID:BK30306 Project ID: ENFIELD MS4 STORMWATER Client ID: I-2 RL/ Parameter Result PQL Units Dilution Date/Time By Reference

Hardness (CaCO3) 49.5 0.1 mg/L 1 12/03/15 E200.7 Escherichia Coli 750 10 MPN/100 mls 1 12/02/15 16:55 CB/RMSM9223B-04 Total Coliforms 4350 10 MPN/100 mls 1 12/02/15 16:55 CB/RMSW9223B C.O.D. 14 10 mg/L 1 12/07/15 MSF SM5220D-97 Conductivity 230 5 umhos/cm 1 12/03/15 RR/EGSM2510B-97 Ammonia as Nitrogen < 0.05 0.05 mg/L 1 12/07/15 WHME350.1 Nitrate-Nitrite (N) 0.07 0.01 mg/L 1 12/08/15 CAL E353.2 Oil and Grease by EPA 1664 < 1.4 1.4 mg/L 1 12/04/15 MSF E1664A pH 7.19 0.10 pH Units 1 12/03/15 09:05 RR/EGSM4500-H B-00 Nitrogen Tot Kjeldahl 0.25 0.10 mg/L 1 12/07/15 WHME351.1 Phosphorus, as P 0.03 0.01 mg/L 1 12/03/15 MA SM4500PE-99 Total Suspended Solids < 5.0 5.0 mg/L 1 12/03/15 KH SM2540D-97 Turbidity 2.7 0.20 NTU 1 12/02/15 20:13 RWRSM2130B-01 Total Metals Digestion Completed 12/02/15 AG

Page 3 of 12 Ver 1 Project ID: ENFIELD MS4 STORMWATER Phoenix I.D.: BK30306 Client ID: I-2 RL/ Parameter Result PQL Units Dilution Date/Time By Reference

RL/PQL=Reporting/Practical Quantitation Level ND=Not Detected BRL=Below Reporting Level Comments:

The regulatory hold time for pH is immediately. This pH was performed in the laboratory and may be considered outside of hold- time. If there are any questions regarding this data, please call Phoenix Client Services at extension 200. This report must not be reproduced except in full as defined by the attached chain of custody.

Phyllis Shiller, Laboratory Director December 11, 2015 Reviewed and Released by: Bobbi Aloisa, Vice President

Page 4 of 12 Ver 1 Environmental Laboratories, Inc. 587 East Middle Turnpike, P.O.Box 370, Manchester, CT 06045 Tel. (860) 645-1102 Fax (860) 645-0823

FOR: Attn: Mr Matt Ladewig Analysis Report ESS Group Inc. December 11, 2015 10 Hemingway Drive 2nd Floor Riverside, RI 02915-2224

Sample Information Custody Information Date Time Matrix: STORM WATER Collected by: 12/02/15 10:20 Location Code: ESSGRPRI Received by: LK 12/02/15 14:49 Rush Request: Standard Analyzed by: see "By" below P.O.#: Laboratory Data SDG ID:GBK30305 Phoenix ID:BK30307 Project ID: ENFIELD MS4 STORMWATER Client ID: C-2 RL/ Parameter Result PQL Units Dilution Date/Time By Reference

Hardness (CaCO3) 89.8 0.1 mg/L 1 12/03/15 E200.7 Escherichia Coli 200 10 MPN/100 mls 1 12/02/15 16:55 CB/RMSM9223B-04 Total Coliforms 3650 10 MPN/100 mls 1 12/02/15 16:55 CB/RMSW9223B C.O.D. 10 10 mg/L 1 12/07/15 MSF SM5220D-97 Conductivity 251 5 umhos/cm 1 12/03/15 RR/EGSM2510B-97 Ammonia as Nitrogen 0.08 0.05 mg/L 1 12/07/15 WHME350.1 Nitrate-Nitrite (N) 0.57 0.01 mg/L 1 12/08/15 CAL E353.2 Oil and Grease by EPA 1664 < 1.4 1.4 mg/L 1 12/04/15 MSF E1664A pH 7.32 0.10 pH Units 1 12/03/15 09:08 RR/EGSM4500-H B-00 Nitrogen Tot Kjeldahl 0.45 0.10 mg/L 1 12/07/15 WHME351.1 Phosphorus, as P 0.04 0.01 mg/L 1 12/03/15 MA SM4500PE-99 Total Suspended Solids < 5.0 5.0 mg/L 1 12/03/15 KH SM2540D-97 Turbidity 2.8 0.20 NTU 1 12/02/15 20:13 RWRSM2130B-01 Total Metals Digestion Completed 12/02/15 AG

Page 5 of 12 Ver 1 Project ID: ENFIELD MS4 STORMWATER Phoenix I.D.: BK30307 Client ID: C-2 RL/ Parameter Result PQL Units Dilution Date/Time By Reference

RL/PQL=Reporting/Practical Quantitation Level ND=Not Detected BRL=Below Reporting Level Comments:

The regulatory hold time for pH is immediately. This pH was performed in the laboratory and may be considered outside of hold- time. If there are any questions regarding this data, please call Phoenix Client Services at extension 200. This report must not be reproduced except in full as defined by the attached chain of custody.

Phyllis Shiller, Laboratory Director December 11, 2015 Reviewed and Released by: Bobbi Aloisa, Vice President

Page 6 of 12 Ver 1 Environmental Laboratories, Inc. 587 East Middle Turnpike, P.O.Box 370, Manchester, CT 06045 Tel. (860) 645-1102 Fax (860) 645-0823

FOR: Attn: Mr Matt Ladewig Analysis Report ESS Group Inc. December 11, 2015 10 Hemingway Drive 2nd Floor Riverside, RI 02915-2224

Sample Information Custody Information Date Time Matrix: STORM WATER Collected by: 12/02/15 10:35 Location Code: ESSGRPRI Received by: LK 12/02/15 14:49 Rush Request: Standard Analyzed by: see "By" below P.O.#: Laboratory Data SDG ID:GBK30305 Phoenix ID:BK30308 Project ID: ENFIELD MS4 STORMWATER Client ID: R-1 RL/ Parameter Result PQL Units Dilution Date/Time By Reference

Hardness (CaCO3) 62.1 0.1 mg/L 1 12/03/15 E200.7 Escherichia Coli 910 10 MPN/100 mls 1 12/02/15 16:55 CB/RMSM9223B-04 Total Coliforms 7270 10 MPN/100 mls 1 12/02/15 16:55 CB/RMSW9223B C.O.D. < 10 10 mg/L 1 12/07/15 MSF SM5220D-97 Conductivity 284 5 umhos/cm 1 12/03/15 RR/EGSM2510B-97 Ammonia as Nitrogen < 0.05 0.05 mg/L 1 12/07/15 WHME350.1 Nitrate-Nitrite (N) 0.94 0.01 mg/L 1 12/10/15 CAL E353.2 Oil and Grease by EPA 1664 < 1.4 1.4 mg/L 1 12/04/15 MSF E1664A pH 6.80 0.10 pH Units 1 12/03/15 09:16 RR/EGSM4500-H B-00 Nitrogen Tot Kjeldahl 0.36 0.10 mg/L 1 12/07/15 WHME351.1 Phosphorus, as P 0.05 0.01 mg/L 1 12/04/15 JR SM4500PE-99 Total Suspended Solids < 5.0 5.0 mg/L 1 12/03/15 KH SM2540D-97 Turbidity 3.5 0.20 NTU 1 12/02/15 20:13 RWRSM2130B-01 Total Metals Digestion Completed 12/02/15 AG

Page 7 of 12 Ver 1 Project ID: ENFIELD MS4 STORMWATER Phoenix I.D.: BK30308 Client ID: R-1 RL/ Parameter Result PQL Units Dilution Date/Time By Reference

RL/PQL=Reporting/Practical Quantitation Level ND=Not Detected BRL=Below Reporting Level Comments:

The regulatory hold time for pH is immediately. This pH was performed in the laboratory and may be considered outside of hold- time. If there are any questions regarding this data, please call Phoenix Client Services at extension 200. This report must not be reproduced except in full as defined by the attached chain of custody.

Phyllis Shiller, Laboratory Director December 11, 2015 Reviewed and Released by: Bobbi Aloisa, Vice President

Page 8 of 12 Ver 1 Environmental Laboratories, Inc. 587 East Middle Turnpike, P.O.Box 370, Manchester, CT 06045 Tel. (860) 645-1102 Fax (860) 645-0823

FOR: Attn: Mr Matt Ladewig Analysis Report ESS Group Inc. December 11, 2015 10 Hemingway Drive 2nd Floor Riverside, RI 02915-2224

Sample Information Custody Information Date Time Matrix: STORM WATER Collected by: 12/02/15 10:50 Location Code: ESSGRPRI Received by: LK 12/02/15 14:49 Rush Request: Standard Analyzed by: see "By" below P.O.#: Laboratory Data SDG ID:GBK30305 Phoenix ID:BK30309 Project ID: ENFIELD MS4 STORMWATER Client ID: I-1 RL/ Parameter Result PQL Units Dilution Date/Time By Reference

Hardness (CaCO3) 1.8 0.1 mg/L 1 12/03/15 E200.7 Escherichia Coli 50 10 MPN/100 mls 1 12/02/15 16:55 CB/RMSM9223B-04 Total Coliforms 2480 10 MPN/100 mls 1 12/02/15 16:55 CB/RMSW9223B C.O.D. 17 10 mg/L 1 12/07/15 MSF SM5220D-97 Conductivity 11 5 umhos/cm 1 12/03/15 RR/EGSM2510B-97 Ammonia as Nitrogen < 0.05 0.05 mg/L 1 12/07/15 WHME350.1 Nitrate-Nitrite (N) 0.38 0.01 mg/L 1 12/10/15 CAL E353.2 Oil and Grease by EPA 1664 < 1.4 1.4 mg/L 1 12/04/15 MSF E1664A pH 6.32 0.10 pH Units 1 12/03/15 09:19 RR/EGSM4500-H B-00 Nitrogen Tot Kjeldahl 0.18 0.10 mg/L 1 12/07/15 WHME351.1 Phosphorus, as P 0.03 0.01 mg/L 1 12/04/15 JR SM4500PE-99 Total Suspended Solids < 5.0 5.0 mg/L 1 12/03/15 KH SM2540D-97 Turbidity 0.69 0.20 NTU 1 12/02/15 20:13 RWRSM2130B-01 Total Metals Digestion Completed 12/02/15 AG

Page 9 of 12 Ver 1 Project ID: ENFIELD MS4 STORMWATER Phoenix I.D.: BK30309 Client ID: I-1 RL/ Parameter Result PQL Units Dilution Date/Time By Reference

RL/PQL=Reporting/Practical Quantitation Level ND=Not Detected BRL=Below Reporting Level Comments:

The regulatory hold time for pH is immediately. This pH was performed in the laboratory and may be considered outside of hold- time. If there are any questions regarding this data, please call Phoenix Client Services at extension 200. This report must not be reproduced except in full as defined by the attached chain of custody.

Phyllis Shiller, Laboratory Director December 11, 2015 Reviewed and Released by: Bobbi Aloisa, Vice President

Page 10 of 12 Ver 1 Environmental Laboratories, Inc. 587 East Middle Turnpike, P.O.Box 370, Manchester, CT 06045 Tel. (860) 645-1102 Fax (860) 645-0823

FOR: Attn: Mr Matt Ladewig Analysis Report ESS Group Inc. December 11, 2015 10 Hemingway Drive 2nd Floor Riverside, RI 02915-2224

Sample Information Custody Information Date Time Matrix: STORM WATER Collected by: 12/02/15 11:05 Location Code: ESSGRPRI Received by: LK 12/02/15 14:49 Rush Request: Standard Analyzed by: see "By" below P.O.#: Laboratory Data SDG ID:GBK30305 Phoenix ID:BK30310 Project ID: ENFIELD MS4 STORMWATER Client ID: C-1 RL/ Parameter Result PQL Units Dilution Date/Time By Reference

Hardness (CaCO3) 136 0.1 mg/L 1 12/03/15 E200.7 Escherichia Coli 5790 10 MPN/100 mls 1 12/02/15 16:55 CB/RMSM9223B-04 Total Coliforms 15530 10 MPN/100 mls 1 12/02/15 16:55 CB/RMSW9223B C.O.D. 10 10 mg/L 1 12/07/15 MSF SM5220D-97 Conductivity 269 5 umhos/cm 1 12/03/15 RR/EGSM2510B-97 Ammonia as Nitrogen < 0.05 0.05 mg/L 1 12/07/15 WHME350.1 Nitrate-Nitrite (N) 2.64 0.02 mg/L 2 12/10/15 CAL E353.2 Oil and Grease by EPA 1664 < 1.4 1.4 mg/L 1 12/04/15 MSF E1664A pH 7.22 0.10 pH Units 1 12/03/15 09:21 RR/EGSM4500-H B-00 Nitrogen Tot Kjeldahl 0.62 0.10 mg/L 1 12/07/15 WHME351.1 Phosphorus, as P 0.06 0.01 mg/L 1 12/04/15 JR SM4500PE-99 Total Suspended Solids < 5.0 5.0 mg/L 1 12/03/15 KH SM2540D-97 Turbidity 0.84 0.20 NTU 1 12/02/15 20:13 RWRSM2130B-01 Total Metals Digestion Completed 12/02/15 AG

Page 11 of 12 Ver 1 Project ID: ENFIELD MS4 STORMWATER Phoenix I.D.: BK30310 Client ID: C-1 RL/ Parameter Result PQL Units Dilution Date/Time By Reference

RL/PQL=Reporting/Practical Quantitation Level ND=Not Detected BRL=Below Reporting Level Comments:

The regulatory hold time for pH is immediately. This pH was performed in the laboratory and may be considered outside of hold- time. If there are any questions regarding this data, please call Phoenix Client Services at extension 200. This report must not be reproduced except in full as defined by the attached chain of custody.

Phyllis Shiller, Laboratory Director December 11, 2015 Reviewed and Released by: Bobbi Aloisa, Vice President

Page 12 of 12 Ver 1 Environmental Laboratories, Inc. 587 East Middle Turnpike, P.O.Box 370, Manchester, CT 06045 Tel. (860) 645-1102 Fax (860) 645-0823 QA/QC Report December 11, 2015 QA/QC Data SDG I.D.: GBK30305

% % Blk Sample Dup Dup LCS LCSD LCS MS MSD MS Rec RPD Parameter Blank RL Result Result RPD % % RPD % % RPD Limits Limits QA/QC Batch 328394 (mg/L), QC Sample No: BK29819 (BK30306, BK30307, BK30308, BK30309, BK30310) Total Suspended Solids BRL 5.0 <5.0 <5.0 NC 87.0 85 - 115 20 QA/QC Batch 328320 (mg/L), QC Sample No: BK30254 (BK30305) Total Suspended Solids BRL 5.0 6.0 6.0 NC 95.0 85 - 115 20 QA/QC Batch 328432 (mg/L), QC Sample No: BK30268 (BK30305, BK30306, BK30307) Phosphorus, as P BRL 0.01 3.4 3.3 3.00 101 86.1 85 - 115 20 QA/QC Batch 328451 (umhos/cm), QC Sample No: BK30286 (BK30305, BK30306, BK30307, BK30308, BK30309, BK30310) Conductivity BRL 5.0 1430 94.3 85 - 115 20 QA/QC Batch 328439 (pH), QC Sample No: BK30286 (BK30305, BK30306, BK30307, BK30308, BK30309, BK30310) pH 6.76 6.76 97.70 85 - 115 20 QA/QC Batch 328526 (mg/L), QC Sample No: BK30299 (BK30305, BK30306, BK30307, BK30308, BK30309, BK30310) Oil and Grease by EPA 1664 BRL 1.4 99.0 85 - 115 20 QA/QC Batch 328724 (mg/L), QC Sample No: BK30307 (BK30305, BK30306, BK30307, BK30308, BK30309, BK30310) C.O.D. BRL 10 10 10 NC 99.7 98.7 85 - 115 20 QA/QC Batch 328535 (mg/L), QC Sample No: BK30308 (BK30308, BK30309, BK30310) Phosphorus, as P BRL 0.01 0.05 0.04 NC 107 100 85 - 115 20 QA/QC Batch 328611 (mg/L), QC Sample No: BK30432 (BK30305, BK30306, BK30307, BK30308, BK30309, BK30310) Ammonia as Nitrogen BRL 0.05 0.06 0.06 NC 104 106 85 - 115 20 Nitrogen Tot Kjeldahl BRL 0.10 1.18 1.15 2.60 103 110 85 - 115 20 QA/QC Batch 328353 (NTU), QC Sample No: BK30933 (BK30305, BK30306, BK30307, BK30308, BK30309, BK30310) Turbidity BRL 0.20 28 26 7.40 107 85 - 115 20 QA/QC Batch 328973 (mg/L), QC Sample No: BK33846 (BK30305, BK30306, BK30307) Nitrate-N BRL 0.02 <0.02 <0.02 NC 98.5 106 85 - 115 20 QA/QC Batch 329247 (mg/L), QC Sample No: BK35321 (BK30308, BK30309, BK30310) Nitrate-N BRL 0.02 <0.02 <0.02 NC 98.3 97.8 85 - 115 20

If there are any questions regarding this data, please call Phoenix Client Services at extension 200. RPD - Relative Percent Difference LCS - Laboratory Control Sample LCSD - Laboratory Control Sample Duplicate MS - Matrix Spike Phyllis Shiller, Laboratory Director MS Dup - Matrix Spike Duplicate December 11, 2015 NC - No Criteria Intf - Interference

Page 1 of 1 Friday, December 11, 2015 Sample Criteria Exceedences Report Page 1 of 1 Criteria:None GBK30305 - ESSGRPRI State:CT RL Analysis SampNo Acode Phoenix Analyte Criteria Result RL Criteria Criteria Units

*** No Data to Display *** #Error

Phoenix Laboratories does not assume responsibility for the data contained in this report. It is provided as an additional tool to identify requested criteria exceedences. All efforts are made to ensure the accuracy of the data (obtained from appropriate agencies). A lack of exceedence information does not necessarily suggest conformance to the criteria. It is ultimately the site professional's responsibility to determine appropriate compliance.