Simsbury_Parks_Golf_SWPPP_2022.pdf

TOWN OF SIMSBURY

STORMWATER POLLUTION PREVENTION PLAN (SWPPP)

76 Hop Brook Road, Simsbury, CT

PREPARED FOR:

Town of Simsbury Parks and Golf Service Facility 76 Hop Brook Road Simsbury, CT

PREPARED BY:

Atlas Technical Consultants LLC 290 Roberts Street-Suite 301 East Hartford, CT 06108 July 5, 2023

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290 Roberts Street-Suite 301 East Hartford, CT 06108

(860) 282-9924 | oneatlas.com

June 26, 2023 Atlas Project No. 2419023004

Mr. Thomas Roy

66 Town Forest Road Simsbury, CT 06092

Subject: Stormwater Pollution Prevention Plan (SWPPP) 76 Hop Brook Road, Simsbury, CT

Dear Mr. Thomas Roy, Atlas is pleased to present this Stormwater Pollution Prevention Plan for the Parks and Golf

Service Facility.

If you have any questions, please call us at (860) 282-9924.

Respectfully submitted, Atlas Technical Consultants LLC

Luke Whitehouse Kay Lehoux Environmental Division Manager Environmental Compliance Manager

Distribution: troy@simsbury-ct.gov

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CONTENTS

EMERGENCY CONTACT AND NOTIFICATION LIST

1. INTRODUCTION

2. FACILITY INFORMATION

2.1 Facility Information

2.2 Facility Description

2.3 Structures and Operations Potentially Exposed to Stormwater

2.3.1 Vehicle Equipment Maintenance/Washing

2.3.2 Fuel Dispensing Area

2.3.3 Outside Storage

2.3.4 Roof Drains and Vents

2.3.5 ASTs

2.3.6 Other Potential Pollutant Sources

2.4 Spill History

3. STORMWATER POLLUTION PREVENTION TEAM

3.1 Team Members and Individual Responsibilities

3.2 Team Responsibilities

4. STORMWATER MANAGEMENT

4.1 Facility Drainage ......................................................... Error! Bookmark not defined.

4.2 Control Measures

4.2.1 Good Housekeeping

4.2.2 Vehicle or Equipment Washing

4.2.3 Floor Drains

4.2.4 Roof Areas

4.2.5 Minimize Exposure

4.2.6 Sediment and Erosion Control

4.2.7 Management of Runoff

4.2.8 Preventative Maintenance

4.2.9 Spill Prevention and Response

4.2.10 Salt Storage

4.2.11 Future Construction

4.2.12 Non-Stormwater Discharges

4.3 Stormwater Monitoring Program

4.3.1 General Overview .......................................... Error! Bookmark not defined.

4.3.2 Schedules and Test Parameters

Sector Specific Monitoring Requirements Impaired Waters Monitoring Requirements

4.3.3 Sample Collection

4.3.4 Recordkeeping and Reporting Requirements

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5. TRAINING, INSPECTIONS, AND RECORDKEEPING

5.1 Training

5.2 Inspections

5.2.1 Routine Inspections

5.2.2 Stormwater Visual Inspections

5.2.3 Stormwater Comprehensive Site Compliance Evaluations

5.3 Recordkeeping

6. PLAN REVIEW AND AMENDMENT

7. IMPLEMENT ITEMS

TABLES

Table 1 – Emergency Contact and Notification List

Table 2 – Structures and Operations Potentially Exposed to Stormwater

Table 3 – Control Measures

Table 4 – Stormwater Sampling Parameters and Limits

Table 5 – Implementation Items

FIGURES

Figure 1 Site Locus

Figure 2 Site Plan

APPENDICES

Appendix A Certifications

Appendix B Inspection Logs and Forms

Appendix C Training and Plan REvision Logs

Appendix D Spill Documentation and Notification Form

Appendix E Stormwater Sampling Forms and Results

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EMERGENCY CONTACT AND NOTIFICATION LIST

Table 1 – Emergency Contact and Notification List

Spill Management Team

Name Title Office Cell

Orlando Casiano Parks Superintendent 860-651-3944

Tom Roy Department of Public Works Director, Town Engineer

860-658-3222 860-982-3724

Kevin Clemens Highway Superintendent 860-658-3222 --

Federal, State, and Local Agencies

Town of Simsbury Fire Department Local Fire Department/Fire Marshal Patrick T. Tourville

911 860-658-1971

Town of Simsbury Police Department Local Police Department/Chief Nicholas Boulter

911 860-658-3101

Connecticut Department of Energy and Environmental Protection (CTDEEP)

CTDEEP 866-337-7745 (24 hr.) --

National Spill Response Center Spill Reporting 800-424-8802 (24 hr.) --

US EPA (Region 1) New England EPA Resource 617-223-7265 (24 hr.) --

Spill Response Contractors and Other Services

Environmental Services Inc. (ESI) Spill Cleanup 800-486-SPIL (7745)

University of CT Health Center (Farmington)

Human Health Hazards 860-298-8442 --

Atlas Technical Consultants, LLC (Atlas)

Consultant 860-282-9924 --

Kay Lehoux (Atlas) Environmental Compliance Manager

860-466-6002 860-933-9657

1. INTRODUCTION

This Stormwater Pollution Prevention Plan (SWPPP) has been prepared for the Town of Simsbury’s Parks and Golf Service Facility (the “Site”) located at 76 Hop Brook Road in Simsbury, Connecticut. This SWPPP has been prepared in accordance with the Connecticut Department of Energy and Environmental Protection (CTDEEP) General Permit for the Discharge of Stormwater Associated with Industrial Activity (Stormwater General Permit), effective October 1, 2019, which requires a SWPPP.

The Stormwater General Permit is applicable if a facility meets both of the following qualifications:

1) The facility meets the definition of “industrial activity”. Under the Stormwater General Permit, “industrial activity” includes numerous Standard Industrial Classification (SIC) codes and descriptive categories YES �NO

Facility SIC code (Section 5(c)(2)(A)): 9199_______________

Sector of Industrial Activity: Sector G

2) The facility discharges stormwater that may come into contact with an “industrial activity”. Any stormwater associated with an “industrial activity” on site is included.

YES �NO

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As the Facility is a covered “industrial activity” and it conducts industrial activities that are exposed to stormwater, it is required to register under the Stormwater General Permit and prepare a SWPPP.

This SWPPP describes the procedures, methods and equipment used to prevent the contamination of stormwater. This SWPPP is intended to meet the planning requirements of the Stormwater General Permit and, as such, a copy of this SWPPP will be kept on Site at all times.

Industrial activities at the Site includes vehicle/equipment maintenance, fuel dispensing, and salt storage.

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2. FACILITY INFORMATION

2.1 Facility Information

Name: Town of Simsbury Parks and Golf Service Facility

Address: 76 Hop Brook Road (also addressed as 100 Old Farms Road) Simsbury, CT

Phone No.: 860-658-3836

Facility Operations: Municipal Parks and Golf Service Facility

Owner: Town of Simsbury

Operator: Town of Simsbury

Primary Contact: Orlando Casiano, Parks Superintendent 860-651-3944

Alternate Contact: Tom Roy, DPW Director 860-658-3222

2.2 Facility Description

2.3 Structures and Operations Potentially Exposed to Stormwater

The following table describes the activities at the Site of which may be exposed to precipitation.

The Site is located on a parcel of land approximately 235.54 acres and owned by the Town of Simsbury.

The property is mainly utilized as a golf course, however the northeastern-most corner of this property is utilized for vehicle maintenance and repair, vehicle and equipment storage, fueling stations, salt storage, processed stone and clean fill storage. The 6.12-acres utilized for the aforementioned activities will be known henceforth as the “Site”. Operations conducted at the Site occur over approximately 6.12 acres on the northeastern-most part of the property.

Two (2) buildings are present on the Site. Building 1 (located centrally in the 6.12-acre area and referred to as “Workshop and Office”) is utilized as a servicing building and office space. This building contains equipment, waste oil storage, Building 2 (located northeast of Building 1 and referred to as “Workshop”) is utilized for vehicle and equipment storage only. Building 3 (located along the northern border of the Site and referred to as “Barn”) is utilized for tractor storage.

Outside storage areas include areas for storing trailers, plows, miscellaneous maintenance equipment and/or vehicles, and material storage piles and bins. Double-contained, aboveground fuel storage tanks (ASTs) with a fueling station are present southeast of Building 2. Two (2) propane ASTs are located along the northwestern corner of Building 2, and are utilized for heating. A floor drain located in the vehicle wash area (immediately west of Building 1) with an oil/water/grit separator is located immediately west of Building 1. Floor drains inside Building 1 and the vehicle washing area discharge into the oil/water/grit separator, which is cleaned on an annual basis by local subcontractors.

Figure 1 depicts the site area. Figure 2 depicts the Site Plan.

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Table 2 – Structures and Operations Potentially Exposed to Stormwater

Activity Location Potential Pollutants Materials Management

Practices

Interior

Vehicle/Equipment Maintenance Buildings 1 Hydrocarbons, oil and grease, fluids

Activities conducted inside buildings on impervious areas. Spill response equipment stored nearby.

Vehicle/Equipment Storage Building 1, 2 Hydrocarbons, oil and grease, fluids, salt residue (sodium, chloride, cyanide)

Vehicles are stored inside when not in use and/or under maintenance. No vehicles are maintained outside.

Vehicle Washing Western side of Building 1

Hydrocarbons, oil and grease, fluids, salt residue (sodium, chloride, cyanide), total suspended sediment (TSS), total dissolved sediment

(TDS)

All equipment and/or vehicles that need to be washed are washed within the vehicle washing area, which is equipped with an oil/water separator, located under cover.

Sand/stone Storage Central portion of the Site.

Sodium, chloride, cyanide, TSS, TDS, fugitive dusts

Salt storage and mixing activities conducted inside sand/stone loading area, and covered when not in use.

Exterior

Fuel Dispensing & ASTs Southeast and northwest corner of Building 2;

western side of

Building 1.

Hydrocarbons Fuel dispensing occurs on impervious surfaces. Spill response equipment is located nearby.

Processed Stone Products Central portion of the Site.

TSS, fugitive dusts Processed crushed stone materials are stored on concrete block storage bins, The material in these bins is considered inert.

Sand, stone, clean fill loading/unloading operations

Central portion of the Site

TDS, salts, fugitive dusts

Areas where sand, stone, and clean fill are loaded/unloaded are loaded/unloaded in the loading area only.

Surrounding areas are swept routinely, and the loading area is covered when not in use.

On-site Waste Disposal Practices

Disposal of used motor oil, antifreeze, solvents, etc.

Exterior and western side of Building 1 under canopy, and interior of Building

1.

None-Not exposed to precipitation

Activities conducted inside buildings on impervious areas and within secondary containment. Spill response equipment stored nearby.

Solid Waste Dumpsters Northwestern side of the Site.

Total metals, TSS Dumpsters are equipped with closing lids, and drain

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The subsections below discuss the activities in the table above and others at the facility, which could potentially cause stormwater pollution.

2.3.1 Vehicle Equipment Maintenance/Washing

2.3.2 Fuel Dispensing Area

2.3.3 Outside Storage

2.3.4 On-site Waste Disposal

2.3.5 Salt Storage Piles or Piles Containing Salt

2.3.6 Roof Drains and Vents

plugs are intact. All refuse is stored inside the dumpsters.

Vehicle equipment maintenance is conducted inside Building 1 only. Oil and chemicals stored inside are kept within secondary containment, or on impermeable surfaces and away from bay doors. Waste oil removal is completed under cover. Vehicles and equipment are stored inside Building 2. Vehicle washing is conducted at the vehicle washing station, which is located on the western side of Building

1. This covered vehicle washing area is pitched to a drain with a corresponding an oil/water separator, which is periodically cleaned out.

There is one (1) fuel dispensing area at the Site, located along the northeastern side of the active portion of the parcel, southeast of Building 2. Propane gas is dispensed as needed for heating.

Gasoline and diesel from the gasoline/diesel fuel ASTs are dispensed to the Town to fuel equipment and vehicles. All fuel-dispensing activities utilize proper hose connections and are always supervised by an on-site employee.

Materials that cannot be stored inside of facility buildings are stored within secondary containment and routinely inspected. Spill kits are kept nearby in the event of a release. The use of materials stored outside is conducted by knowledgeable personnel, and is always supervised by facility employees.

Other outside storage areas consists of clean fill, sand, and processed stone, or waste oils. Equipment stored outside is maintained in good condition to minimize leaks and/or spills, or under roof canopies.

Waste oils are stored in impermeable containers with secondary containment and under cover.

General refuse is collected by the Site and then placed inside covered dumpsters for removal.

Piles that may contain materials with salts are stored on impermeable surfaces and covered when not in active loading or unloading operations.

The buildings are equipped with roof drains or utilize sheet flow. The drains and/or sheet flow directs stormwater to pavement or grassy areas, which eventually infiltrates into the ground or drains to the Site outfalls.

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2.3.7 ASTs

2.3.8 Groundwater

2.3.9 Dust Generation and Vehicle Tracking of Industrial Materials

2.3.10 Other Potential Pollutant Sources

2.4 Spill History

Per the Stormwater General Permit, spills and leaks of 5 gallons or more of toxic or hazardous substances that occurred at the facility three years prior to this SWPPP Certification should be included in the facility spill history.

Table 3 – Spill History

Date Material

Released Amount (gals)

Terminated? Description

Spills and leaks of 5-gallons or more of toxic or hazardous substances that occurred at the facility three years prior to this SWPPP certification have not been reported.

Several ASTs are located on-site. A 5,000-gallon gasoline AST and a 1,000-gal diesel AST are located southeast of Building 2. Two (2) 100-gallon propane ASTs are located along the northwestern exterior wall of Building 2. These ASTs are stored on impermeable surfaces, and are within secondary containment with cover. Only employees trained in dispensing of fuel are allowed to directly fuel into vehicles or to fill smaller fuel containers.

A 250-gallon and a 550-gallon AST are located along the western exterior of Building 1. These ASTs are within secondary containment and under cover. Several ASTs are located inside Building 1 and are not exposed to precipitation, including four (4) 250-gallon used oil ASTs, and one (1) 1,000-gallon clarifier and water mixture AST.

The ASTs are periodically checked for leaks or damage that may result in a release from the environment. Absorbent material is stored nearby.

This section is not applicable because groundwater does not discharge from the Site.

Dust tracking may occur during loading or unloading operations near the sand storage area. Routine sweeping is conducted to keep the area free of sediments and particulates. The material piles are covered when not in active loading or unloading operations.

Sprayers utilized in creating field lines are cleaned out periodically at the Site. These operations occur in the vehicle washing station, where any runoff is directed into the oil/water/grit separator.

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3. STORMWATER POLLUTION PREVENTION TEAM

3.1 Team Members and Individual Responsibilities

The Stormwater Pollution Prevention Team at the Facility includes the following members.

Orlando Casiano, Team Leader Parks Superintendent Telephone Number: 860-651-3944 (office) Responsibilities: Coordinate all stages of Plan development, inspections and implementation; coordinate training program; keep all records and ensure appropriate submittals; and oversee sampling program.

Tom Roy, Crew Leader Director of Public Works Telephone Number: 860-658-3222 (office); 860-982-3724 (cell) Responsibilities: Assist the Team Leader with implementation of the Plan.

3.2 Team Responsibilities

The Stormwater Pollution Prevention Team is familiar with all aspects of this Plan and facility processes and activities, as well as the location of and characteristics associated with oil and chemical substances handled and stored at the Facility. They are also familiar with the location of records pertinent to the SWPP Plan within the facility and the facility layout.

The Team is responsible for Plan development, maintenance and implementation. Team responsibilities include:

1. Develop and implement Control Measures inspection and review procedures;

2. Conduct or oversee regular compliance inspections of the facility and assure documentation and review of these inspections;

3. Review analytical data from storm events for compliance with regulations;

4. Review new construction or facility modifications or changes, as necessary;

5. Make changes in procedures, as necessary, and proper notifications, if required; and

6. Update or revise the SWPPP, as necessary.

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4. STORMWATER MANAGEMENT

Section 4.0 presents a description of stormwater management at the Site and stormwater procedures implemented by facility personnel. This section is divided into three subsections, which discuss (1) Facility

Drainage, (2) Control Measures, and (3) Stormwater Monitoring. These subsections are presented below.

4.1 Control Measures

4.1.1 Good Housekeeping

4.1.2 Vehicle or Equipment Washing

Good housekeeping practices are designed to maintain a clean and orderly work environment. Often the most effective first steps towards preventing pollution in storm water from industrial sites involves using common sense to improve the facility’s basic housekeeping methods. The following are good housekeeping practices completed at the facility:

- Implementing careful material storage practices

- Maintaining up-to-date material inventory

- Identify all chemical substances present in the workplace

- Label all containers showing name and type of substance, stock number, etc.

- Scheduling routine cleanup operations

- Maintaining well-organized work areas

- Training employees about good housekeeping practices

- All areas around this facility are kept free of refuse and trash.

- Lids are kept closed on trash dumpsters (where applicable), drain plugs are intact, and the areas are regularly inspected.

The pickup and disposal of waste products at the facility occur on a routine basis. The municipal dumpster is disposed of by municipal waste disposal contractors. Employees at the facility routinely inspect operational equipment and storage areas throughout the daily workflow. Drums and storage containers are inspected before and during usage of the materials stored within. The drums and other storage containers are placed on top of appropriately sized secondary containment or stored away from openings inside the buildings. All tanks at the facility are inspected via the routine and semiannual inspection sheets attached in Appendix B. Employees also routinely inspect outdoor storage areas for staining and leaks from tanks and the fueling station.

Vehicles and equipment are washed on the exterior of Building 1 in the covered vehicle wash area, where wash water drains to an oil/water/grit separator. Washing of vehicles or equipment out of cover or during rainstorms is prohibited.

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4.1.3 Floor Drains

4.1.4 Roof Areas

4.1.5 Minimize Exposure

4.1.6 Sediment and Erosion Control

There are no floor drains within the on-site Buildings where materials with potential pollutants are stored. Floor drains in restrooms discharge to the sanitary sewer.

Roof drainage discharges to the pavement surrounding the buildings, or infiltrates into the ground.

All vehicle maintenance operations are performed inside the buildings at the Site. Service vehicles/equipment are typically stored inside buildings overnight, or on permeable surfaces.

All vehicle repairs/maintenance will be performed indoors. To the extent practicable, dumpster storage of general refuse is covered.

Loading and unloading of fuel oil (gasoline and diesel) operations from on-site ASTs utilize proper hose connections, and are always supervised by an on-site employee. The loading dock is covered, or materials are transferred inside the building and under cover. The loading of waste oils is completed within the main building. The unloading and loading of materials is completed by competent personnel and is always supervised by an on-site staff. Monthly, routine inspections are completed.

Materials stored outside are equipped with secondary containment and are covered. The ASTs are properly labeled, and refuse and/or sludge are stored in covered dumpsters. Monthly, routine inspections are completed.

Materials stored inside are equipped with secondary containment or on impermeable surfaces, and are stored away from exterior doorways. All materials are properly labeled, and routine inspections are completed.

The facility's SWPPP must identify activities that present a potential for significant soil erosion and measures taken to control such erosion. There are several grassy or riprapped areas throughout the facility. These areas are well maintained, and do not currently cause erosion concerns. Erosion and sediment control should be monitored as part of the annual visual inspections to ensure no new erosion concerns begin at the facility.

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4.1.7 Management of Runoff

4.1.8 Preventative Maintenance

For the purposes of this SWPPP, runoff management is defined as practices which divert, infiltrate, reuse, or treat stormwater runoff, and not practices that limit exposure of potential pollutants to direct rainfall or runoff. There are three (3) drainage areas at the facility, which are further described below.

Drainage Area 1 consists of Building 3 (Barn), and the access driveway. Precipitation is diverted via slope to the west, where it infiltrates into the ground.

Drainage Area 2 consists of the eastern and the majority of the central portion of the Site.

Building 2 (Workshop), the fueling station and associated ASTs, sand/stone storage bins, miscellaneous equipment storage, and the dumpster storage are located within this drainage area. Stormwater runoff follows the natural slope of the surrounding area, and infiltrates into the ground. Stormwater runoff may accumulate between Building 2 and the Sand/Stone Storage bins due to grading; this stormwater is directed to a grassy swale where it either infiltrates into the ground, or travels through a culvert and discharges into a stream.

Drainage Area 3 consists of Building 1, which includes outside equipment storage and the vehicle wash area. Stormwater runoff from Building 1 is directed to a roof drain, which discharges to a riprapped swale west of Building 1. Stormwater then infiltrates into the ground. Stormwater runoff along the southern end of Building 1, via grading, travels into a small retention basin, where it infiltrates into the ground. The majority of the stormwater runoff to the north and west of Building 1 travel via sheet flow and infiltrate into the surrounding soils.

A preventative maintenance program involves inspections and maintenance of stormwater management devices and routine inspections of facility operations to detect faulty equipment.

Equipment (such as tanks, containers, and drums) will be checked regularly for signs of deterioration.

All areas of the facility will be inspected for the following at appropriate intervals as specified in Section 5.1 of this Plan:

- Leaks or conditions that would lead to discharges;

- Conditions that could lead to direct contact of storm water with raw materials, intermediate materials, waste materials or products;

- Storage tanks and totes, process and material handling equipment, and material bulk storage areas for leaks, corrosion, or other deterioration or non-containment.

All operational equipment at the facility is inspected before usage. If any leaks or spills are noted, or damage to the equipment, the equipment is taken out of production until repairs are completed.

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4.1.9 Spill Prevention and Response

4.1.10 Salt Storage Piles or Piles Containing Salt

4.1.11 Future Construction

4.1.12 Non-Stormwater Discharges

Areas where spills are likely to occur and their drainage points are identified in the Section 2.3 of this storm water pollution prevention plan. Employees will be aware of material handling and storage requirements, spill response procedures and clean up procedures. Detailed spill response procedures are included in the facility’s SPCC Plan. Also, there is appropriate spill cleanup equipment and access to that equipment.

Spill prevention and response procedures currently implemented or that will be implemented are:

• Good housekeeping practices.

• Regular visual inspections to identify areas for potential leaks or spills.

• Identification of a spill response team to implement the spill response plan.

• Identification of safety measures.

• Procedures for notifying appropriate authorities (Police, Fire, Hospital, Publicly Owned Treatment Works, etc.) in the event of a spill.

• Spill containment, diversion, isolation, and cleanup practices.

Each tank, drum, or piece of operational equipment are stored within secondary containment or in a manner to reduce the spread of any spills or leaks at the facility. All state of Connecticut notification requirements are followed in the event of a spill at the facility. Spill kits and absorbents are stored throughout the facility to help prevent the spread of a spill. Specific spill response procedures and total storage quantity can be found in the facility’s SPCC Plan.

When not in use, these storage bins with sandy materials are covered with a tarp to reduce exposure to precipitation. The surrounding area is regularly swept.

Any future construction activity that disturbs greater than one (1) acre will be conducted in accordance with CT DEEP regulations and will comply with the 2002 Connecticut Guidelines for Soil Erosion and Sediment Control during construction, and the 2004 Connecticut Stormwater Quality Manual for the design and implementation of post-construction stormwater management measures. The Site will avoid, wherever possible, the use of copper or galvanized roofing or building materials for any new building construction where these materials will be exposed to stormwater.

The stormwater drainage system at the Site was observed by Atlas on May 23, 2023 to determine if there were any non-stormwater-related discharges occurring. No non-stormwater discharges occur at the Site.

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Table 4 contains a summary of the potential pollutant sources at the Site and how some of the Control Measures discussed above apply to each.

Table 4 – Control Measures

4.2 Stormwater Monitoring Program

The Stormwater General Permit specifies required stormwater monitoring. The stormwater monitoring program for the Site is as follows. The stormwater discharge location is depicted on Figure 2. The Stormwater Monitoring Program outlined in the Stormwater General Permit specifies that the facility is required to fulfill stormwater sampling and analytical testing requirements associated with stormwater discharge from Outfall 1.

4.2.1 Schedules and Test Parameters

The Stormwater General Permit requires semi-annual testing and specifies the parameters to be analyzed in the stormwater outfall sample. Table 5 summarizes the parameters to be tested for in the stormwater sample collected from the outfall (s). The Site has met all requirements for testing under the Stormwater General Permit. The following information is being provided for informational purposes only.

Certain industrial facilities are required to comply with numeric effluent limits determined by the EPA as specified in the Stormwater Industrial General Permit in “Additional Requirements for Certain Sectors” (Section 5(f)).

The facility is subject to effluent limitations □ YES NO

Stormwater from the facility discharges to the following waterbody .............................................. Hop Brook

The area of this waterbody to where stormwater from the Facility discharges is designated as an impaired waterbody.

□ YES NO

Potential Pollutant Source

Good Housekeeping Minimize Exposure Spill Prevention

Vehicle Equipment- Maintenance/ Washing

Maintain area in reasonable clean condition

Ensure trench drains and associated piping are periodically cleaned out

Perform inside buildings (maintenance) or covered areas (washing)

Maintain spill response equipment nearby

Fuel Dispensing Maintain area in reasonable clean condition

All ASTs are clearly labeled

Minimize fuel transfers during rain events

Do not overfill vehicles Monitor all product transfer events Assure integrity of fuel dispensing equipment Maintain spill response equipment nearby

Sand/Stone Storage Maintain area in reasonably clean condition

Store inside building Sweep paved areas periodically

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This waterbody is impaired due to the presence of the following contaminants.

Table 5 – Stormwater Sampling Parameters and Limits

SECTOR SPECIFIC MONITORING REQUIREMENTS

The sector specific monitoring requirements and associated benchmarks are as follows for Sector G where incidental soil de-icing material (salt) is stored:

Parameter

Chloride

Cyanide

These parameters are to be sampled for the first two (2) years of the permit term (four samples).

IMPAIRED WATERS MONITORING REQUIREMENTS

Any potential discharge through the outfall would reach Hop Brook. The portion of Hop Brook near the Site is not considered an impaired waterway.

Sampling Parameter1 Regulatory Criteria Sampling Frequency

S.U.2

Uncontaminated Rainfall pH NE3 Semi-Annual4

Stormwater pH 5-9 Semi-Annual mg/L5

Total Copper 0.059 Semi-Annual

Total Lead 0.076 Semi-Annual

Total Zinc 0.160 Semi-Annual

Total Suspended Solids 90 Semi-Annual

Total Oil and Grease 5 Semi-Annual

Chemical Oxygen Demand 75 Semi-Annual

Total Phosphorus-P 0.40 Semi-Annual

Total Kjeldahl Nitrogen 2.30 Semi-Annual

Nitrate-N 1.10 Semi-Annual

Aquatic Toxicity LC50≥50%6 Annual7

Notes:

1. All parameters listed in table are Standard Monitoring Benchmarks unless otherwise noted.

2. SU = Standard Units

3. NE = None Established

4. The semi-annual monitoring periods are October 1 to March 31 and April 1 to September 30.

5. mg/L = milligrams per liter

6. The 48-hour Acute Toxicity LC50 value (% Survival) must be greater than 50%.

7. Aquatic Toxicity monitoring is required annually for the first two (2) years of sampling. The monitoring period is October 1st to September 30th.

Not applicable. The receiving waterbody is not impaired.

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4.2.2 Sample Collection

Sampling should be conducted according to the following criteria.

1. Sampling is to be conducted during a storm event generating a stormwater discharge that occurs at least 72 hours after any previous storm event that generated a stormwater discharge. This is referred to as a qualifying event.

2. Monitoring events are to be separated by at least 30 days.

3. Grab samples are to be used for all monitoring. Grab samples are to be collected within the first 30 minutes of a storm event discharge.

4. All samples must be taken during the same storm event, if feasible.

5. Stormwater discharge containing snow or ice melt may be used, but must be noted on the sample reporting form.

For each storm event monitored, the following information is collected.

1. The date, discharge temperature, time of the start of the discharge, time of sampling at each outfall and magnitude (in inches) of the storm event sampled; and

2. The duration between the storm event and the end of the previous stormwater discharge event.

The following outline describes the stormwater sample collection and laboratory testing procedures followed for the outfall.

1. Collect the samples directly from the outfall. Fill the collection containers with stormwater without touching the insides of the containers. Cover the containers when finished.

2. Label all samples and store samples in a cooler or refrigerator at 4o C.

3. Prepare a Chain of Custody and transport the samples to the laboratory as soon as possible (less than 24 hours after sampling).

4. Unless otherwise specified in the Stormwater General Permit, all pollutant parameters must be tested according to methods prescribed in 40 CFR 136.

5. Acute toxicity biomonitoring tests must be conducted according to the procedures specified in Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, 5th edition (EPA 821-R-02-012).

4.2.3 Recordkeeping and Reporting Requirements

For each stormwater sample taken, the following information is recorded.

1. The place, date and time of sampling;

2. The person(s) collecting the samples;

3. The dates and times the analyses were initiated;

4. The person(s) or laboratory who performed the analyses;

5. The analytical techniques of methods used; and

6. The results of all required analyses.

A log for recording this data is presented in Appendix E.

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After collection of 4 semi-annual samples, if the average of the 4 monitoring values for any parameter does not exceed the benchmark, the monitoring requirements for that parameter have been fulfilled for the term of the Stormwater General Permit. Once the benchmark for sample pH has been met and monitoring for pH has been fulfilled, the measurement of rainfall pH is no longer required.

Within 120 days of receiving the results of the fourth semi-annual sample, if the average of the 4 semi-annual monitoring values for any parameter exceeds the benchmark, the Town will review the selection, design, installation and implementation of the Control Measures to determine if modifications are necessary to meet the benchmarks, and either:

Make the necessary modifications to the Control Measures and SWPP Plan and continue semi-annual monitoring until 4 consecutive semi-annual monitoring events have been completed for which the average does not exceed the benchmark; or

Make a determination that no further pollutant reductions are technologically available and economically practicable and achievable in light of best industry practice to implement additional control measures or meet the benchmarks, in which case the Facility must continue monitoring once per year. The Site will also document the rationale for concluding that no further pollutant reductions are achievable and submit this documentation to the CT DEEP for written approval. The Site will retain all records related to this documentation with the SWPP Plan.

If an exceedance of the 4-event average is mathematically certain, the Site will review the control measures and perform any required corrective action immediately or document why no corrective action is required, without waiting for the full four (4) monitoring events. If, after modifying the control measures and conducting additional semi-annual monitoring, the average of the most recent four (4) monitoring events still exceeds the benchmark, or if an exceedance of the benchmark by the 4-event average is mathematically certain for the most recent four (4) monitoring events, the Site will again review the control measures and take one of the two actions above.

The CTDEEP has established a Stormwater Monitoring Report (SMR) Form that is to be completed and submitted for each outfall sampled. Monitoring results are submitted to the CTDEEP within 90 days of the date of the sampling. If a discharge does not occur during a monitoring period, a SMR must still be submitted, and a notation of “No Discharge” will be made on the form.

A signed and dated original of the SMR Form is submitted to the CT DEEP at the following address:

Water Toxics Program Coordinator Bureau of Water Protection and Land Reuse Department of Energy & Environmental Protection 79 Elm Street Hartford, CT 06106-5127

A sample copy of an SMR is found in Appendix E. Copies of the completed SMRs may be kept in Appendix E. If the Site monitors its stormwater more frequently than required by the Stormwater General Permit, it will also report those results to the CTDEEP.

At this time, the Site has met all sampling requirements and is not required to submit an SMR to

CTDEEP.

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5. TRAINING, INSPECTIONS, AND RECORDKEEPING

This section of the SWPPP describes the Training, Inspections, and Recordkeeping procedures for the Site. Appendix B contains recordkeeping log forms for inspections and Appendix C contains recordkeeping log forms for training and Plan revisions. All records of inspections, training and Plan revisions are maintained by the Stormwater Pollution Prevention Team and may be kept with the SWPPP.

5.1 Training

All training will be held on an annual basis. Any personnel associated with Site operations or product handling at the Site is required to attend the training.

The training topics include the following items:

1. Instructions on the contents of this SWPP Plan.

2. Discussion of the Stormwater Pollution Prevention Team and its responsibilities.

3. A review of the proper Control Measures to be used by employees on a regular basis, including spill prevention and response; standard housekeeping measures; and materials and waste handling procedures.

4. A review of the most recent stormwater Comprehensive Site Compliance Evaluation results and any resulting changes to the SWPP components of this Plan.

5.2 Inspections

The Stormwater Pollution Prevention Team is responsible for the entire Site and its proper operation. Site inspections are conducted by at least one member of the Team or by a qualified professional.

Inspection logs for this SWPPP have been developed for the Site. The logs are designed to meet the inspection requirements of the Stormwater General Permit regulation. A copy of the logs is presented in Appendix B. Records of inspections are maintained by the Stormwater Pollution Prevention Team and may be kept with the SWPPP. The sections below describe the components of the Site inspections.

5.2.1 Routine Inspections

On a monthly basis, at least one member of the Stormwater Pollution Prevention Team or someone designated by it conducts a walkthrough of the Site. At a minimum, the outdoor storage tanks, and fuel dispensing areas are inspected to ensure that all equipment and structures are in a satisfactory condition.

Routine Inspection Forms are located in Appendix B.

Atlas recommends that diesel fuel/gasoline/waste oil transfers be inspected when they occur. Atlas recommends that the Site develop and implement a policy for the tank truck delivery drivers to complete this inspection log each time fuel is delivered to or waste is removed from the Site.

5.2.2 Stormwater Visual Inspections

Visual inspections of stormwater are conducted quarterly throughout the period of Stormwater General Permit coverage. For monitoring purposes, quarters will begin on January 1, April 1, July 1, and October 1.

Inspections are conducted during a qualifying rain event. If no qualifying rain event occurs during the quarter, a letter will be entered into the file documenting such. Visual monitoring of stormwater is conducted during the first 30 minutes of the rain event. The examination documents observations of color, odor, clarity, floating solids, settled solids, suspended solids, foam, oil sheen and other obvious indicators of stormwater pollution. The inspection is documented. The inspection form is presented in Appendix B.

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If the visual assessment indicates the Control Measures for the Site are inadequate or are not being properly operated and maintained, the Town will review and revise the selection, design, installation, and implementation of the Control Measures to ensure that the condition is eliminated and will not be repeated in the future. Record of this documentation will be maintained in the SWPPP.

5.2.3 Stormwater Comprehensive Site Compliance Evaluations

Comprehensive Site Compliance Evaluations are conducted every six months at the Site by one or more persons on the Stormwater Pollution Prevention Team, or persons designated by it. All potential sources of pollution identified in Section 2.2 of this Plan are inspected to assure that appropriate Control Measures (Section 4.2) are implemented. Any modification, including the elimination, movement, or creation of an exposed area or pollution source, is documented. The SWPPP is updated to reflect this information as needed.

The semi-annual inspections are conducted, when possible, during a rainfall event. The Comprehensive Site Compliance Evaluation Form is presented in Appendix B. Any deficiencies observed during the evaluation are noted on the Form.

Within thirty days of the inspection, follow-up actions are taken to correct any deficiencies. If the corrections cannot be made within the thirty-day period, a schedule for implementation of the corrections is added to the SWPPP within the thirty-day period. The Form and/or follow-up actions are maintained by the Stormwater Pollution Prevention Team.

5.3 Recordkeeping

This SWPPP and all training, inspection, recordkeeping and testing records associated with it are maintained at the Site for a minimum of five years following the expiration of the Stormwater General Permit.

Records are signed by an appropriate supervisor, where applicable. Modifications to this Plan are recorded in the Revisions Log in Appendix C.

Page | 18

6. PLAN REVIEW AND AMENDMENT

Atlas recommends that this Plan be reviewed at least annually by the Stormwater Pollution Prevention Team to verify that it represents current facility conditions and complies with current regulations. During this review, the Town of Simsbury should check with a qualified environmental consultant or the CTDEEP to verify that the most current governing regulations are incorporated.

The Town will amend this Plan within 120 days whenever the Site experiences any of the following conditions:

a substantial change which has a significant effect on the discharge, or potential for discharge, of pollutants in stormwater from the Site;

an inspection, investigation or monitoring event which shows that the SWPPP is not effectively controlling or eliminating pollutants in stormwater discharges;

a failure of the SWPPP to ensure or adequately protect against pollution of the waters of the state;

a request by the Commissioner of the CTDEEP to modify the SWPPP; or a notification that they are subject to requirements because the receiving water to which it discharges stormwater has been designated as impaired under Section 303(d) of the Clean Water Act and as identified in the most recent State of Connecticut Integrated Water Quality Report, or a TMDL has been established for the receiving water.

These amendments will be effective when re-certified by a Professional Engineer licensed to practice in Connecticut or a Certified Hazardous Materials Manager and will be recorded in the Revisions Log included in Appendix C.

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7. IMPLEMENT ITEMS

The following recommendations have been made based on Atlas’s site inspection, an SWPPP review conducted by the certifying Professional Engineer

Table 6 – Implementation Items

Recommendations Completed

Date Initials

Develop and implement a policy for tank truck delivery drivers to complete the Oil Product Transfers inspection log each time diesel fuel/gasoline is delivered to the facility.

Review the SWPP Plan at least annually to verify that it represents current facility conditions and complies with current regulations.

FIGURE 1

SITE LOCUS

290 Roberts Street, Suite 301

East Hartford, CT. 06108

860-282-9924

USGS Topography Map

DESIGNED BY: KLL SCALE: NTS

DRAWN BY: AMJ DATE: 6/2023 Figure 1

REVIEWED BY: DPB

SOURCE: USGS Topographic Map, Tariffville, Connecticut, Quadrangle, 7.5 Minute Series, dated 2021.

Project: Town of Simsbury

Parks and Golf Service Facility

Client: Town of Simsbury

Site Address: 76 Hop Brook Road

Simsbury, Connecticut

Site Locus

Site

FIGURE 2

SITE PLAN

Barn

Pond

Building 2:

Workshop

Building 1:

Workshop and

Office

Dumpster Storage

Wooded

Wooded

Wooded

Wooded

Golf Green

Parking Area

Sand/Stone Storage Bins

Golf Green

Grassy Swale

Stream

Fueling Area A2

A1

SP

A3

Oil-Water Separator

Retention Basin

Utility Island

Equipment Storage

Area

Roof Drain Discharge Point

Overhang

Vehicle Wash Area Equipment

Storage Area

Misc.

Storage

Storm Water Outfall 01 (Sheet Flow)

Equipment Storage Area

Hop Brook Rd

Storm Water Outfall 02

SP

B4

B5

B1

B2

B3

C1

Offices

Small Equipment Storage

D1 D2

CLIENT:

TITLE:

PROJECT:

FIGURE NO.:DATE:SCALE: JOB NO.:

APPROVED BY:DESIGNED BY:DRAWN BY:

COMPUTER CADFILE :

CHECKED BY:

60303060

76 Hop Brook Road Simsbury, CT

ML KLKLML

June 20231"=60' 2419023001 1

CADFILE

SP

A1

A2

A3

B1 B2 B3 B4

B5

C1

D1 & D2

AutoCAD SHX Text

GRAPHIC SCALE:

AutoCAD SHX Text Wallingford Compost Center

AutoCAD SHX Text

SITE PLAN

AutoCAD SHX Text

SWPPP

AutoCAD SHX Text plan should not be used for construction or

AutoCAD SHX Text depicted on this plan are approximate. This

AutoCAD SHX Text All locations, dimensions, and property lines

AutoCAD SHX Text land conveyance purposes.

AutoCAD SHX Text General Notes:

AutoCAD SHX Text 290 Roberts Street, Suite 301 * East Hartford, CT 06108

AutoCAD SHX Text Phone: 860-282-9924 Fax: 737-207-8276

AutoCAD SHX Text Surface Flow Direction Indicator

AutoCAD SHX Text Legend

AutoCAD SHX Text Stream Line

AutoCAD SHX Text Storm Sewer Line

AutoCAD SHX Text Rip-Rap

AutoCAD SHX Text 5,000-Gal Gasoline AST

AutoCAD SHX Text Above-Ground Storage Tanks

AutoCAD SHX Text Approximate Property Boundary

AutoCAD SHX Text Treeline

AutoCAD SHX Text Building

AutoCAD SHX Text Drainage Area 1

AutoCAD SHX Text Spill Kit

AutoCAD SHX Text 1,000-Gal Diesel AST

AutoCAD SHX Text 550-Gal Drum of Kerosene

AutoCAD SHX Text Drainage Area 2

AutoCAD SHX Text Drainage Area 3

AutoCAD SHX Text 250-Gal Drum of Used Oil

AutoCAD SHX Text 250-Gal Drum of Used Oil

AutoCAD SHX Text 550-Gal Drum of Used Oil

AutoCAD SHX Text 250-Gal Drum of Used Oil

AutoCAD SHX Text 250-Gal Drum of Used Oil

AutoCAD SHX Text 1,000-Gal Clarifier and Water Control AST

APPENDIX A

CERTIFICATIONS

Facility Management Approval

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

Name: Title:

Signature: Date:

Connecticut P.E. Certification

“I certify that I have thoroughly and completely reviewed the Stormwater Pollution Prevention Plan prepared for this site. I further certify, based on such review and site visit by myself or my agent, and on my professional judgment, that the Stormwater Pollution Prevention Plan meets the criteria set forth in the General Permit for the Discharge of Stormwater Associated with Industrial Activity effective on October 1, 2011. I am aware that there are significant penalties for false statements in this certification, including the possibility of fine and imprisonment for knowingly making false statements.”

Name: David Brassard Title: Senior Project Manager, LEP, P.E.

Signature:

Date:

License #:

7/5/2023

019366

Non -Stormwater Discharge Certification

“I certify that in my professional judgment, the stormwater discharge from the site consists only of stormwater, or of stormwater combined with wastewater authorized by an effective permit issued under section 22a-430 or section 22a-430b of the Connecticut General Statutes, including the provisions of this general permit, or of stormwater combined with any of the following discharges provided they do not contribute to a violation of water quality standards:

• landscape irrigation or lawn watering;

• uncontaminated groundwater discharges such as pumped groundwater, foundation drains, water from crawl space pumps and footing drains;

• discharges of uncontaminated air conditioner or refrigeration condensate;

• water sprayed for dust control or at a truck load wet-down station;

• naturally occurring discharges such as rising groundwaters, uncontaminated groundwater infiltration (as defined at 40 CFR 35.2005(20)), springs and flows from riparian habitats and wetlands.

This certification is based on testing and/or evaluation of the stormwater discharge from the site. I further certify that all potential sources of non-stormwater at the site, a description of the results of any test and/or evaluation for the presence of non-stormwater discharges, the evaluation criteria or testing method used, the date of any testing and/or evaluation, and the on-site drainage points that were directly observed during the test have been described in detail in the Stormwater Pollution Prevention Plan prepared for the site. I further certify that no interior building floor drains exist unless such floor drain connection has been approved and permitted by the commissioner or otherwise authorized by a local authority for discharge as domestic sewage to sanitary sewer. I am aware that there may be significant penalties for false statements in this certification, including the possibility of fine and imprisonment for knowingly making false statements.”

Name: Kay Lehoux Title: Environmental Compliance Manager

Signature:

Date:

6/26/2023

APPENDIX B

INSPECTION LOGS AND FORMS

ROUTINE FACILITY INSPECTIONS

BMP/activity Implemented? Maintenance Required?

Corrective Action Needed and Notes

1 Are all slopes and disturbed areas not actively being worked properly stabilized?

Yes No Yes No

2 Are natural resource areas (e.g., streams, wetlands, mature trees, etc.) protected with barriers or similar BMPs?

3 Are perimeter controls and sediment barriers adequately installed and maintained?

4 Are discharge points and receiving waters free of any sediment deposits?

5 Are storm drain inlets properly protected?

6 Is trash/litter from work areas collected and placed in covered dumpsters?

7 Are vehicle and equipment fueling, cleaning, and maintenance areas free of spills, leaks, or any other deleterious material?

8 Are non-stormwater discharges (e.g., wash water, dewatering) properly controlled?

9 (Other)

SWPP Plan

Parks and Golf Service Facility 76 Hop Brook Road, Simsbury, CT

Parks and Golf Service Facility

Simsbury, Connecticut

STORMWATER QUALITY

Quarterly Visual Inspection Log

Inspector Name: Date: Time:

Outfall…