List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Avon Site/location Date Notified Type of Hazard Response Action

Avon Municipal Landfill 7/5/2007 Pollution was detected in a supply DEP directed the town to identify wells Sampled residential wells and installed new 281 Huckleberry Hill Road well but is below standards. within 1000 feet, including along New monitoring well for landfill. Monitoring program Road downgradient of the landfill, and continuing. Avon continue to conduct an already approved landfill monitoring program. Beacon Falls Site/location Date Notified Type of Hazard Response Action

Watkins Bros. Machinery (Former) 1/4/2017 Pollution in the top two feet of soil DEEP reviewed information provided Extent of hazard delineated and warning signs 100 Railroad Avenue may pose a risk to human health and determined that polluted soil is in have been posted. Quarterly confirmation of as a result of direct contact. secure and fenced area, limiting access restrictions required. Beacon Falls potential contact, and requested warning signs be posted, the extent of polluted soil be delineated and submittal of periodic status reports. Berlin Site/location Date Notified Type of Hazard Response Action

Best Cleaners 10/14/2016 Pollution detected in groundwater DEEP directed the property owner to Pollution is being monitored per General Permit 138 Mill Street above standards may threaten a evaluate the nature, extent and degree and work plan. Elevated copper, cadmium and drinking water well. of groundwater pollution to determine nickel levels appear to be limited to the onsite Berlin the threat to surface water near the site treatment area and do not extend off-site. Pollution detected in groundwater and to continue the best effort to obtain that discharges to a surface water the access and sample the identified body may pose a risk to aquatic potable well. life.

Best Cleaners 1/23/2006 Pollution detected in groundwater DEP required additional sampling of a The one nearby well was sampled 5 times, with 138 Mill Street above standards may threaten a nearby identified well and identification no contamination detected. The well hasn't drinking water well. of any other drinking water wells within been sampled since the property became Berlin 500 feet of the site. vacant in 2013. Investigation has been completed and remediation is on-going at the site.

Best Cleaners 6/27/2016 Pollution detected in groundwater DEEP directed the property owner to Pollution is being monitored per General Permit 138 Mill Street above standards may threaten a evaluate the nature, extent and degree and work plan. Elevated copper, cadmium and drinking water well. of groundwater pollution to determine nickel levels appear to be limited to the onsite Berlin the threat to surface water near the site treatment area and do not extend off-site. Pollution detected in groundwater and to continue the best effort to obtain that discharges to a surface water the access and sample the identified body may pose a risk to aquatic potable well. life.

Updated as of: Wednesday, September 8, 2021 All Districts Page 1 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Berlin Site/location Date Notified Type of Hazard Response Action

Corbin Russwin 11/17/1998 Polluted groundwater beneath an DEP required no specific action In 1999 the responsible party installed a sub 225 Episcopal Road occupied building could affect provided that investigation and slab ventilation system and a groundwater indoor air quality. remedation is onging in accordance treatment system. These systems were Berlin with established schedule and plan. expanded in 2004 and have been operating continuously since 1999 to current day. Annual monitoring report required.

Northeast Utilities - Berlin Campus Settling Basin 10/1/2012 Pollution in the top two feet of soil DEEP directed the property owner to Modified PCB Remediation PlanRemediation 107 Selden Street may pose a risk to human health submit a plan to identify the extent of approved on December 2020. Remediation of as a result of direct contact. polluted soil and to remove the polluted the impacted soil completed in May 2021. Berlin soil.

Residential Property 5/30/2001 Pollution detected in groundwater DEP reviewed the sampling data that Tank, impacted soil and groundwater removed. 769 Beckley Road above standards may threaten a showed no contaminatants related to Confirmatory supply well sampling tried by drinking water well. the spill and determined that no action DEEP August 2015; access denied/no Berlin was required at this time. response. Further DEEP actions not planned because the sustantial source mitigation limits potential future risk. Bethany Site/location Date Notified Type of Hazard Response Action

Former Gun Club 12/8/2015 Pollution detected in groundwater DEEP directed the property owner to Olin, has purchased the property and is in the 53 Atwater Road above standards may threaten a sample supply wells within 500 feet, process of delineating the extent of the hazard drinking water well. develop a monitoring and maintenance condition and will work with the Town to Bethany program based on the sampling results, mitigate hazard on Atwater Rd if necessary. Pollution in the top two feet of soil submit a plan to identify the extent of may pose a risk to human health polluted soil and limit access to the as a result of direct contact. polluted soil.

Pleasant View Garage 5/26/2004 Pollution detected in groundwater DEP directed the property owner to Well recepror survey submitted and 119-127 Amity Road above standards may threaten a sample the identified nearby wells for environmental consultant is in the process of drinking water well. pollutants detected at the site. contacting owners to gain access for sampling Bethany of the potable wells. Bolton Site/location Date Notified Type of Hazard Response Action

Griffin Dewatering - New England, Inc. 4/19/2017 Pollution detected in groundwater DEEP directed the property owner to Owner action pending. 299 Hop River Road above standards may threaten a sample the onsite supply well and drinking water well. sample nearby wells for pollutants Bolton detected at the site.

Mike's Citgo 6/3/2005 Pollution detected in groundwater DEP directed the property owner to On-site well tested and non-detect for the 1135 Boston Turnpike above standards may threaten a identify and sample wells up to 500 feet pollutants at the site. Four nearby wells drinking water well. away from the site for pollutants continue to be evaluated by DEEP. Bolton detected at the site.

Updated as of: Wednesday, September 8, 2021 All Districts Page 2 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Bolton Site/location Date Notified Type of Hazard Response Action

Precision Landscaping 2/21/2006 Pollution detected in groundwater DEP directed the property owner to Wells identified and sampled, pollution either 280 West Street above standards may threaten a sample the onsite supply well and not detected or detected but below standards. drinking water well. identify and sample wells up to 500 feet Bolton away from the site for pollutants detected at the site. Bozrah Site/location Date Notified Type of Hazard Response Action

Mimmo's Service Center 10/18/2011 Pollution detected in groundwater DEEP directed the property owner to Three wells identified and sampled, pollution 421 Salem Turnpike above standards may threaten a sample the onsite supply well and either not detected or detected but below drinking water well. identify and sample nearby wells for standards. DEEP evaluating results to Bozrah pollutants detected at the site. determine next steps. Branford Site/location Date Notified Type of Hazard Response Action

Acitronics, Inc. 5/12/2014 Pollution detected in groundwater DEEP directed the property owner to Groundwater modeling indicates that site 35 Acorn Road that discharges to a surface water submit a plan to investigate the extent contaminants will not reach surface water body body may pose a risk to aquatic and degree of groundwater pollution, for approximately 500 years. Additional Branford life. and to evaluate the threat to surface monitoring being conducted. water and aquatic life. Bridgeport Site/location Date Notified Type of Hazard Response Action

Black Rock Ship Yard (former) 11/14/2005 Pollution detected in groundwater DEP directed the owner to arrange for Prospective purchaser backed out, property is 10 Brewster Street that discharges to a surface water the prospective purchaser to include still vacant. Groundwater threat to surface body may pose a risk to aquatic evaluation of the threat to surface water water evaluated by DEEP for site specific Bridgeport life. and aquatic life in planned investigation conditions and determined to not significantly and remedial activity. impact surface water and aquatic life.

Remington Arms Company, Inc. (former) 2/5/2004 Pollution detected in groundwater DEP directed the property owner to Groundwater threat to surface water evaluated 939 Barnum Avenue that discharges to a surface water evaluate the nature, extent and degree for site specific conditions and determined to body may pose a risk to aquatic of groundwater pollution to determine not significantly impact surface water and Bridgeport life. the threat to surface water and aquatic aquatic life. life near the site.

Remington Arms Company, Inc. (former) 1/16/2003 Pollution in the top two feet of soil DEP directed the property owner to Warning signs posted, site secured and fence 939 Barnum Avenue may pose a risk to human health post warning signs and install a fence installed to limit the potential for contact with as a result of direct contact. or secure the area to limit access to the polluted soil. Bridgeport polluted soil.

Updated as of: Wednesday, September 8, 2021 All Districts Page 3 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Bridgeport Site/location Date Notified Type of Hazard Response Action

Residence 11/11/2020 Pollution detected in groundwater DEEP directed the property owner to Impacted soil from fuel oil tank release was 81 Rooster River Boulevard above standards may threaten a sample the threatened wells periodically excavated, bedrock monitoring and recovery drinking water well. Pollution for the pollutants detected at the site, wells to be installed and monitored, and Bridgeport detected in groundwater that and advise DEEP of any changes and onsite/area drinking water wells have been and discharges to a surface water go forward with installation of an onsite will continue to be sampled regularly. No body may pose a risk to aquatic groundwater recovery system. pollution in wells to date. life. Bristol Site/location Date Notified Type of Hazard Response Action

Bristol Landfill 4/27/2016 Pollution was detected in drinking DEEP directed the property owner to Additional sampling was performed. All owners Lake Avenue water wells above standards. provide bottled water to property with with polluted wells were supplied with bottled polluted wells and requested additional water. Landfill to continue to report on status of Bristol testing. water supply wells and bottled water.

Citgo Food Bag #503 10/25/2017 Pollution detected in groundwater DEEP directed the property owner to 4 wells identified, 2 wells connected to water, 1 396 Birch Street above standards may threaten a identify any water supply wells within vacant and sampled ND for 4 Qs, 1 sampled drinking water well. 500 feet of the site and to test all supply ND for 4 Qs. Monitoring program implemented Bristol wells on abutting properties for on site. Subslab vapor sampling conducted at pollutants detected at the site. 348 Redstone Hill Rd ND for COC. Need to further delineate plume.

J. Laviero Metals Company (former) 4/29/2016 Pollution in the top two feet of soil DEEP directed the property owner to Fence and signage have been installed. 894 Middle Street may pose a risk to human health post warning signs, and install a fence Quarterly inspection and maintenance. The as a result of direct contact. to limit access to the polluted soil until remedial plan for PCBs was approved by EPA Bristol the site is cleaned up. Feb 14, 2018.

Pump Station 12/1/2004 Pollution was detected in a DEP reviewed additional sampling data Monitoring program implemented. 13 Julia Road drinking water well above and determined the reported pollution standards. was not confirmed. DEP directed the Bristol property owner to sample the potentially affected wells monthly for pollutants detected at the site, and provide bottled water if needed.

Sessions J. H. & Son Inc. (former) 12/20/2016 Pollution in the top two feet of soil DEEP directed the property owner to Fence and signage were installed and the 273 Riverside Avenue may pose a risk to human health inform persons with potential for fence will be inspected monthly. as a result of direct contact. exposure, post warning signs, and Bristol install a fence to limit access to the polluted soil.

Updated as of: Wednesday, September 8, 2021 All Districts Page 4 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Brookfield Site/location Date Notified Type of Hazard Response Action

Candlewood Lake Station, Inc. 1/16/2019 Pollution detected in groundwater DEEP directed the property owner to On-site and off-site potable wells sampled. 330 Candlewood Lake Road above standards may threaten a sample the onsite supply well and Abutting potable wells sampled. Pollution not drinking water well. supply wells on abutting properties for detected in potable wells. On-site monitoring Brookfield pollutants detected at the site, and program implemented. make further recommendations. DEEP directed owner to continue sampling monitoring wells quarterly.

Kimchuk (former) 5/20/2005 Pollution was detected in a DEP required no action, because there Area potable supply wells sampled. All 34 Del Mar Drive drinking water well above is already a treatment filter on the pollution detected was below criteria or being standards. supply well and nearby locations also treated. Public water supply expanded to cover Brookfield have alternate supplies of potable water. the affected area.

Max BMW Motorcycles 12/12/2017 Pollution in the top two feet of soil DEEP reviewed information provided March 2020 owner completed soil excavation 465 Federal Road may pose a risk to human health and determined that the polluted soil is with confirmation samples demonstrating that as a result of direct contact. under pavement, limiting the potential the hazard condition no longer exists. Brookfield for contact. DEEP requested full delineation of the extent of pollution and annual status confirmation reports.

Rapid Power Technologies (former) 12/29/2011 Pollution in the top two feet of soil DEEP directed the property owner to Warning sings posted, temporary fence 58 Old Grays Bridge Road may pose a risk to human health inform persons with potential for installed, site secured, and personnel informed. as a result of direct contact. exposure, post warning signs, and Maintenance of controlled condition will Brookfield install a fence and secure the area to continue until soil is remediated by owner. limit access to the polluted soil until the Owner is not reporting and may not be site is cleaned up. controlling active risk.

Rapid Power Technologies (former) 4/3/2012 Pollution in the top two feet of soil DEEP directed the property owner to Warning sings posted, temporary fence 58 Old Grays Bridge Road may pose a risk to human health inform persons with potential for installed, site secured, and personnel informed. as a result of direct contact. exposure, post warning signs, install a Maintenance of controlled condition will Brookfield fence to limit access to the polluted soil continue until soil is remediated by owner. until the site is cleaned up, and to Owner is not reporting and may not be submit a plan to eliminate the risk to controlling active risk. human health.

Residence 2/5/2019 Pollution was detected in a DEEP directed the property owner to Owner action pending. 68 Obtuse Hill Road drinking water well but is below resample the onsite and abutting water standards. Pollution detected in supply wells for pollutants detected at Brookfield groundwater above standards the site, to identify wells within 500 ft may threaten a drinking water from the site, to close the UST grave, well. and provide the UST closure report.

ShopRite Plaza 8/30/2005 Pollution detected in groundwater DEP directed the property owner to 8 wells within 500 ft. 2 public wells monitored 143 Federal Road above standards may threaten a sample identified wells within 500 feet by DPH. Pollution detected in 2 supply wells drinking water well. for pollutants detected at the site. below action level. Filter systems installed. 4 Brookfield other private wells tested; pollution not detected. Monitoring program for groundwater and supply wells.

Updated as of: Wednesday, September 8, 2021 All Districts Page 5 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Brookfield Site/location Date Notified Type of Hazard Response Action

Texaco Facility #100058 1/10/2003 Pollution detected in groundwater DEP directed the property owner to 7 supply wells identified and on-site well 138 Federal Road above standards may threaten a identify and sample wells up to 500 feet sampled; pollution not detected or detected drinking water well. from the site for pollutants detected at below standards. Monitoring program on-going Brookfield the site. at two off-site supply wells and on-site groundwater. Site connected to public water 2017. Brooklyn Site/location Date Notified Type of Hazard Response Action

Brooklyn Xtramart 2/21/2014 Pollution detected in groundwater DEEP directed the property owner to Drinking water wells identified and sampled, 409 Providence Road above standards may threaten a identify and sample nearby wells for pollution not detected in drinking water. drinking water well. pollutants detected at the site. Monitoring program implemented. Brooklyn

Eggs, Inc. 5/27/2004 Pollution detected in groundwater DEP directed the property owner to Well potentially at risk is connected to public Route 205 & Vina Lane above standards may threaten a identify and sample wells up to 500 feet water; no other wells known to be at risk. drinking water well. from the site for pollutants detected at Brooklyn the site. Canaan Site/location Date Notified Type of Hazard Response Action

Falls Village Citgo, (PC#007710) 3/30/2006 Pollution detected in groundwater DEP directed the property owner to Nearby wells tested and no pollution detected. Route 7 & Route 63 (Intersection) above standards may threaten a sample the onsite supply well on a Quarterly monitoring program on-going for on- drinking water well. quarterly basis until remediation of the site supply well, monitoring wells, and surface Canaan site is complete and to identify and water. Dept. of Public Health also reviewing sample wells up to 500 feet away from data. the site for pollutants detected at the site. Canterbury Site/location Date Notified Type of Hazard Response Action

Former Waste Management of CT - Truck Muse 6/30/2016 Pollution was detected in a DEEP reviewed sampling data and Monitoring program implemented. 133 Packer Road drinking water well but is below determined pollution in the well is below standards. standards, and the water is safe for Canterbury human consumption. Continued monitoring of this supply well to be performed.

Residence 12/11/2015 Pollution was detected in a DEEP directed the property owner to Water treatment system was already 121 Packer Road drinking water well above continue to monitor and maintain the installed. Owner to monitor and maintain standards. existing water treatment system for the treatment system. Canterbury polluted wells.

Updated as of: Wednesday, September 8, 2021 All Districts Page 6 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Canterbury Site/location Date Notified Type of Hazard Response Action

Residential Property 8/27/1999 Pollution was detected in a DEP reviewed the sampling data for the Pollution was significantly below standards. 146 Packer Road drinking water well but is below affected well and determined that the DEP determined the source of pollution was standards. source of pollution was due to an from the adjacent landfill property. The Canterbury adjacent property. DEP requested on- repsonsible party is performing on-going going monitoring of the drinking water groundwater and drinking water well monitoring wells be performed by the adjacent associated with the landfill. property owner.

Willimantic Waste Paper Co. 5/27/2008 Pollution detected in groundwater DEP directed the property owner to Consultant identified potable wells within 500 133 Packer Road above standards may threaten a sample the onsite supply well and foot radius. Sampled 5 wells; one additional drinking water well. identify and sample wells up to 500 feet house appeared to be vacant and was not Canterbury away from the site for pollutants sampled. No contaminants detected. detected at the site. Canton Site/location Date Notified Type of Hazard Response Action

Commercial Property 10/11/2011 Pollution was detected in a DEEP requested confirmation Onsite underground tanks removed and onsite 3 Albany Turnpike drinking water well but is below resampling of the supply well and drinking water resampled and well was not standards. determination of the pollution source. If contaminated Canton groundwater is the source DEEP requested an inventory of all drinking water wells within 500 feet.

Mobil Service Station No. 01-QQD 6/10/2010 Pollution detected in groundwater DEP directed the property owner to Potable drinking water supply wells were 306 Albany Turnpike above standards may threaten a sample residential wells within 500 feet sampled and did not contain any contaminants drinking water well. of the site for pollutants detected at the of concern Canton site.

Residence 5/9/2011 Pollution detected in groundwater DEP directed the property owner to Onsite and nearest downgradient drinking 23 Lovely Street above standards may threaten a conduct a receptor survey and continue water supplies were sampled and did not drinking water well. to sample 21 and 23 Lovely Street for contain pollutants associated with the hazard. Canton contaminants of concern.

Station No. 17771 (Former) 6/12/2012 Pollution was detected in a DEEP directed the property owner to Bottled water is being provided by responsible 306 Albany Turnpike drinking water well above conduct the work identified in the party. standards. hazard notification. Canton

Updated as of: Wednesday, September 8, 2021 All Districts Page 7 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Cheshire Site/location Date Notified Type of Hazard Response Action

Ball & Socket Manufacturing (Former) 6/29/2015 Polluted groundwater beneath an DEEP directed the property owner to Indoor air sampling indicated that pollutant 493 West Main Street occupied building could affect evaluate the groundwater pollution to levels are below Residential criteria. indoor air quality. determine the threat to surface water Additionally, zinc was not detected in surface Cheshire and aquatic life near the site and to water samples taken from the Cheshire Canal. Pollution detected in groundwater determine if indoor air quality is being that discharges to a surface water affected and provide a plan of action. body may pose a risk to aquatic life.

Cheshire BP 7/29/2008 Pollution detected in groundwater DEP directed the property owner to The site is now connected to public water. 901 West Main Street above standards may threaten a sample the onsite well and identified Three drinking water supply wells identified in drinking water well. wells within 1000 feet for pollutants the receptor survey were sampled Cheshire detected at the site. semiannually 2008 to 2013; pollution was not detected.

Cheshire Landfill 11/28/2005 Pollution was detected in a DEP directed the property owner to Monitoring to continue pursuant to Landfill Waterbury Road (Route 70) drinking water well but is below continue an established monitoring requirements. Chloroform detected at a trace standards. program, and evaluate trends in the levels at potable well located at 599 Moss Cheshire pollutant that was detected. Farms Rd. Homeowner notified. VOCs not detected at any other wells during April 2021 sampling event.

Cheshire Landfill 5/23/2005 Pollution was detected in a DEP required continued sampling of the Monitoring to continue pursuant to Landfill Waterbury Road (Route 70) drinking water well but is below well for pollutants detected at the site. requirements. No volatile organic compounds standards. detected during semi-annual monitoring in Cheshire 2017.

Cheshire Landfill 12/3/2002 Pollution was detected in a DEP directed the property owner to Sampling continues as part of landfill Waterbury Road (Route 70) drinking water well but is below sample wells up to 100 feet from the monitoring. Volatile organic compounds not standards. site for pollutants detected at the site. detected in drinking water supply wells during Cheshire 2017 sampling events.

Cheshire Veterinary Hospital 9/29/2006 Pollution detected in groundwater DEP directed the property owner to 3 potable wells were identified in receptor 1568-1572 South Main Street above standards may threaten a sample potable wells identified up to survey in 2018: 84, 94, 108 Fenn Rd. Wells drinking water well. 500 feet of the site for pollutants were sampled in 2006 and petroleum Cheshire detected at the site. constituents were not detected. Excavation of contaminated soils conducted in 2006 and 2008.

Residence 5/20/2008 Pollution was detected in a DEP directed the Town of Cheshire to Potable well and monitoring wells at Cheshire 485 Moss Frams Road drinking water well but is below continue an established monitoring landfill have been routinely monitored by the standards. program, and evaluate trends of the Town of Cheshire. MTBE was reported as non- Cheshire pollutant that was detected. detected in the potable well and less than applicable standards in landfill monitoring wells.

Updated as of: Wednesday, September 8, 2021 All Districts Page 8 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Cheshire Site/location Date Notified Type of Hazard Response Action

Superior Steel (former) 5/11/2004 Pollution detected in groundwater DEEP reviewed the information Sampling private wells at 1826 and 1833 Peck 1855 Peck Lane above standards may threaten a provided and directed the owner to Lane no impacts noted during multiple rounds drinking water well. further evaluate the condition in of sampling - evidence that PCBs in soil at the Cheshire groundwater. Site is not impacting nearby residences or migrating offsite. RAP will be submitted to EPA for review. Chester Site/location Date Notified Type of Hazard Response Action

Astroseal Products Mfg. Corporation 2/13/2018 Pollution was detected in a DEEP reviewed sampling data for the Report received 7/7/20 reported that the facility 85 Airport Industrial Park (85 Winthrop Road) drinking water well. threatened wells and determined has placed 2 GAC filters on the on-site potable pollution is not in fact present in the well. Post-filter results indicated that the only Chester wells. VOC detected was aceteone at 6.5 ug/L, well below GWPC of 700 ug/L. They are providing bottled water.

Cryodyne Technologies, Inc. 12/28/1998 Pollution detected in groundwater DEP reviewed the information provided DEP installed a Carbon filter system and 67 Winthrop Road (Highway 1) above standards may threaten a and determined that this was being homeowner is maintaining the system. Soil drinking water well. addressed in the potable water program. removal 1994. GW Monitoring performed 2000, Chester 2003, 2006 shows decline to ND in 10/06 for PCE and TCE.

Kenyon Building 9/16/1999 Pollution detected in groundwater Some chemicals of concern remain DEP will continue to monitor raw and treated 59 Winthrop Road above standards may threaten a above their applicable criteria in raw water on a regular basis. drinking water well. water, but they are not present above Chester their applicable criteria in treated water. DEP will continue to sample these wells on a regular basis.

Susan Bates (former) 10/9/1998 Pollution was detected in a DEP requested that the impacted wells Threatened and affected drinking water wells re- 212 Middlesex Avenue drinking water well above be re-tested. tested; pollution was not detected. Site is being standards. Pollution detected in investigated and remediated under the Chester groundwater above standards Corrective Action Program. Monitoring program may threaten a drinking water implemented for groundwater and drinking well. water wells.

Susan Bates (former) 12/22/1999 Pollution was detected in a DEP requested that the impacted wells Threatened and affected drinking water wells re- 212 Middlesex Avenue drinking water well above be re-tested. tested; pollution was not detected. Site is being standards. Pollution was detected investigated and remediated under the Chester in a drinking water well but is Corrective Action Program. Monitoring program below standards. Pollution implemented for groundwater and drinking detected in groundwater above water wells. standards may threaten a drinking water well.

Updated as of: Wednesday, September 8, 2021 All Districts Page 9 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Colchester Site/location Date Notified Type of Hazard Response Action

Residence 2/1/2018 Pollution was detected in a DEEP directed the property owner to Three wells identified and three wells sampled. 174 Mill Hill Road drinking water well above resample the onsite supply well and Pollution not detected. Source abatement standards. sample nearby wells for pollutants activities ongoing. Colchester detected at the site. Columbia Site/location Date Notified Type of Hazard Response Action

Collins Garage 6/10/2009 Pollution detected in groundwater DEP directed the property owner to Nearby wells identified and sampled, pollution 177 Route 66 above standards may threaten a sample the onsite supply well and not detected. Monitoring program implemented drinking water well. sample nearby wells for pollutants and onsite remediation ongoing. Columbia detected at the site.

Residential property 11/13/2013 Pollution was detected in a DEEP directed the property owner to On-site well remains impacted with fuel-oil. 66-68 Route 87 drinking water well above check and remove any visible free Neighboring wells tested and are not impacted standards. product from the well, install a second by release. DEEP continues to work with Columbia carbon filter canister, and conduct property owners and their respective attorneys periodic testing of the well for the to address pollution abatement and drinking pollutants present at the site. water issues.

Residential Property 3/12/2019 Pollution was detected in a Submitt a report of actions including a Mitigation action pending. 33 Lake Road drinking water well above well receptor survey, results of testing standards. the abutting parcel wells, and Columbia recommendations for further actions

Wile Hyundai 4/22/2020 Pollution detected in groundwater Owner will be collecting drinking water Owner action pending. 21 Route 66 East above standards may threaten a sample results from abutting properties drinking water well. and removing soil contamination. Columbia Coventry Site/location Date Notified Type of Hazard Response Action

7-Eleven Store # 32520 10/23/2007 Pollution was detected in a DEP directed the property owner to Addiitional groundwater monitoring was 2711 Boston Turnpike (Route 44) drinking water well but is below sample the onsite supply well and conducted and nearby drinking water wells standards. identify and sample wells up to 500 feet were tested; no problems were identified. No Coventry away from the site for pollutants further monitoring is needed provided detected at the site. conditions do not change. Danbury Site/location Date Notified Type of Hazard Response Action

345 Main Street LLC 3/5/2008 Polluted groundwater beneath an DEP directed the property owner to Soil vent system installed to prevent impact on 345 Main Street occupied building could affect determine if indoor air quality is being indoor air quality. Monitoring program indoor air quality. affected and provide a plan of action, if implemented including automatic alarms inside Danbury necessary. building. Monitoring of vent system ongoing.

Updated as of: Wednesday, September 8, 2021 All Districts Page 10 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Danbury Site/location Date Notified Type of Hazard Response Action

Automated Waste Disposal, Inc. 4/18/2016 Pollution in the top two feet of soil DEEP directed property owner to inform Fencing has been installed and the warning 307 White Street may pose a risk to human health persons with potential exposure, post signage posted to limit unknowing access to as a result of direct contact. warning signs, install fence to limit the polluted soil. Polluted soil is also under Danbury access to polluted soil until site is pavement that is in good condition. cleaned up, provide report of extent of polluted soil, and a plan for maintenance or abatement.

Automated Waste Disposal, Inc. 7/18/2019 Pollution in the top two feet of soil Reportedly warning signs are posted Owner action pending. 307 White Street/14 Beaver Brook Rd may pose a risk to human health and the polluted soil is under pavement as a result of direct contact. and in a secure and fenced area, Danbury limiting the potential for contact. DEEP directed owner to delineate the extent of the soil hazard and submit annual confirmation reports.

Emhart Tecknologies LLC, Heli-Coil Facility 3/29/2012 Polluted groundwater beneath an DEEP directed the property owner to Installed vapor extraction system under 4 Shelter Rock Lane occupied building could affect submit a plan to develop a remedy to affected building. Monitoring program indoor air quality. limit the impact of pollution on indoor air implemented. Danbury quality and to conduct sensitive receptor survey to evaluate if any residences could be affected by the groundwater plume.

Former Mallory Hat Factory 1/25/2017 Pollution detected in groundwater DEEP directed the property owner to No mercury detected in any stream samples. 89 Rose Hill Avenue that discharges to a surface water test surface water and to submit a plan City intends to remediate the site using a body may pose a risk to aquatic to further evaluate the potential threat Brownfield grant recently awarded. Danbury life. to surface water and aquatic life.

John's Automotive Service Center 4/22/2008 Pollution detected in groundwater DEP required additional sampling of on- On-site well sampled. Pollution not detected. 85 Mill Plain Road above standards may threaten a site water supply well for pollutants Site connected to municipal water. On-site well drinking water well. detected at the site. not abandoned and used in monitoring program. Danbury

Kenosia Well Field 8/7/2015 Pollution was detected in a DEEP directed the property owner to re- Supply well is currently inactive, no plans for 18 Christopher Columbus Avenue drinking water well above test the supply wells. future use. Follow up sampling confirmed the standards. Pollution was also previous results. City is continuing to Danbury detected in a drinking water well investigate. but is below standards.

Norbert E. Mitchell Co., Inc. 7/6/2005 Pollution detected in groundwater DEP directed the property owner to Impacted soil substantially removed. One water 7 Federal Road above standards may threaten a periodically sample the onsite well for supply well identified (on-site well) and drinking water well. pollutants detected at the site, until sampled, pollution not detected. Semi-annual Danbury polluted soil on the site is remediated. monitoring program for water supply well and (No other drinking water wells were groundwater implemented. identified within 500 feet of the site.)

One Stop Cleaners and Tailor Shop 3/10/2015 Pollution detected in groundwater DEEP directed the property owner to All four identified water supply wells sampled. 54 Padanaram Road (b) above standards may threaten a sample the four identified wells within No pollution detected. Soil remediation drinking water well. 500 feet of the site for pollutants performed and groundwater monitoring ongoing. Danbury detected at the site.

Updated as of: Wednesday, September 8, 2021 All Districts Page 11 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Danbury Site/location Date Notified Type of Hazard Response Action

Residence 10/31/2016 Pollution was detected in a DEEP directed the property owner to Six supply wells identified and four wells 15 Mariana Farm Drive drinking water well above sample the threatened and polluted sampled, some pollution above standards standards. Pollution was detected wells quarterly for the pollutants found. Temporary water treatment systems Danbury in a drinking water well but is detected at the site, and install a water installed at polluted wells @ #s 15 and 17 below standards. treatment system if pollution levels Mariana Farm Drive. Monitoring and reporting increase. to be implemented by owner. Darien Site/location Date Notified Type of Hazard Response Action

Linden Cleaners, Inc 9/30/1999 Polluted groundwater beneath an DEP directed the property owner to Vent system installed on-site. Groundwater 22 Heights Road occupied building could affect determine if indoor air quality is being polluted at concentrations exceeding applicable indoor air quality. affected and, if so, provide a plan of criteria. Off-site impacts still require evaluation Darien action. by owner. Deep River Site/location Date Notified Type of Hazard Response Action

Haynes Materials Company 9/15/2015 Pollution detected in groundwater DEEP reviewed sampling data for the Additional investigation indicated that impacts 24 Woodbury Road above standards may threaten a threatened wells and determined to soil are limited. Potable wells sampled and drinking water well. pollution is not in fact present in the results were non-detect. Also, the potable wells Deep River wells. are in an upgradient direction. Additional semi- annual sampling of on-site monitoring wells is planned.

Parcel 11/10/2003 Pollution was detected in a DEP identified a responsible party and Water treatment system installed by 168 Main Street drinking water well but is below required provision of a safe supply of responsible party at property with polluted well. standards. drinking water. Deep River

Residence 4/5/2017 Pollution was detected in a DEEP directed the property owner to On-site potable wells and 3 downgradient wells 94 Hemlock Drive drinking water well but is below resample the onsite supply well and sampled and all non-detect for parameters standards. Pollution detected in identify and sample nearby off-site analyzed. 2 downgradient monitoring wells still Deep River groundwater above standards potable wells for pollutants detected at exceed standard for ETPH. Monitoring will may threaten a drinking water the site. continue quarterly for ETPH and 2 abutters will well. be sampled for ETPH. Derby Site/location Date Notified Type of Hazard Response Action

DoT property (former) 1/24/2003 Pollution in the top two feet of soil DEP directed the property owner to Owner to provide update on abatement Main Street may pose a risk to human health submit a plan to eliminate the risk to measures. as a result of direct contact. human health. Derby

Updated as of: Wednesday, September 8, 2021 All Districts Page 12 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Derby Site/location Date Notified Type of Hazard Response Action

O'Sullivan's Island 6/16/1999 Pollution in the top two feet of soil DEP directed the property to submit a Some polluted soil removed by EPA in 2009. Confluence Housatonic & Naugatuck River may pose a risk to human health report of actions taken to prevent Additional abatement action necessary for as a result of direct contact. access to the polluted soil, and to remaining impacted soil. Impacted soil area Derby submit a plan to evaluate the potential covered with 1 foot of clean soil. 2014 Pollution detected in groundwater risk to surface water. groundwater sampling results did not indicate that discharges to a surface water surface water threat. body may pose a risk to aquatic life. Durham Site/location Date Notified Type of Hazard Response Action

Durham Citgo (Former) 1/22/2018 Pollution detected in groundwater DEEP directed the property owner to Monitoring program implemented. 22 New Haven Road above standards may threaten a sample the onsite supply well and] drinking water well. identify and sample nearby wells for Durham pollutants detected at the site.

Durham Firehouse 9/10/2008 Pollution detected in groundwater DEP directed the property owner to The town identified one well within 500 feet of 41-51 Main Street above standards may threaten a sample the onsite supply well and the site and sampled the well. No drinking water well. identify and sample wells up to 500 feet contamination related to the site was detected. Durham away from the site for pollutants Next sampling event December 2018. detected at the site.

Grippo's Mobil 1/26/2006 Pollution was detected in a DEP directed the property owner to Two potable wells were installed with filter 349 Main Street drinking water well but is below identify and sample wells up to 500 feet systems. There are also two other gasoline standards. away from the site for pollutants stations nearby: former Shell Station and Durham detected at the site. former Dairy Mart. Other potable wells were monitored by other two gasoline stations.

Kellish Property 8/30/2019 Pollution was detected in a DEEP reviewed report of initial Further monitoring of drinking water well and 227 Main Street drinking water well but is below mitigation actions and determined that filter system pending. standards. drinking water well has a filtration Durham system. Nearby wells unlikely to be impacted since the pollution was released directly into the well; well has been repaired.

Shell Facility #136301 (former) 7/7/2009 Pollution was detected in a DEP required additional sampling of A well receptor survey within a 500-foot radius 336 Main Street drinking water well above onsite and three other nearby identified of the site was conducted and four potable standards. Pollution detected in wells for metals detected at the site. wells were identified. The wells were equipped Durham groundwater above standards with water treatment systems. The operation may threaten drinking water wells. and maintenance of these water treatment systems are ongoing.

Updated as of: Wednesday, September 8, 2021 All Districts Page 13 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

East Granby Site/location Date Notified Type of Hazard Response Action

East Granby Citgo 4/28/2008 Pollution detected in groundwater DEP directed the property owner to Quarterly groundwater and drinking water 2 School Street above standards may threaten a sample the threatened wells for the monitoring events will continue throughout drinking water well. pollutants detected at the site, and 2021. On site supply well Feb 2021 test results East Granby advise DEP of any changes. DEP also confirmed water is potable. Well at 12 School required the owner to continue to St not available to sample and 27 School St did evaluate and characterize soil and not grant access. groundwater impacts. East Haddam Site/location Date Notified Type of Hazard Response Action

Municipal Offices & Town Garage 9/8/2000 Pollution detected in groundwater DEP directed the property owner to Source of pollution substantially removed. All 7 Main Street above standards may threaten a report on sampling of supply wells and wells within 500 ft identified and sampled, drinking water well. recommend further actions. pollution either not detected or detected but East Haddam below standards. Additional evaluation determined no well impacts due to reported release. East Hampton Site/location Date Notified Type of Hazard Response Action

Belltown Motors 8/1/2011 Pollution detected in groundwater DEP directed the property owner to Belltown Motors completed a receptor survey 80 East High Street above standards may threaten a sample the onsite and nearby identified identifying 13 wells. Twelve of the thirteen drinking water well. wells within 500 feet for pollutants were sampled. One resident refused. Pollution East Hampton detected at the site. was detected in one drinking well, but significantly below standards.

CL&P East Hampton Service Center 4/10/2012 Pollution detected in groundwater DEEP directed the property owner to CL&P sampled the eight identified wells in May 22 East High Street above standards may threaten a sample the threatened wells for the 2012 and the detected compounds were below drinking water well. pollutants detected at the site. standards. These wells were historically East Hampton sampled by CL&P. CL&P will submit documents to demostrate that plume is stable and risks to these wells are low.

ConnDOT - East Hampton Salt Shed 10/30/2018 Pollution in the top two feet of soil DEEP reviewed information provided Polluted soil poses no risk due to limited ability 253 West High Street may pose a risk to human health and determined that the polluted soil is to contact it; warning signs to be installed. Soil as a result of direct contact. in a secure area limiting the potential will be later removed. East Hampton for contact.

Ghezzi Motors (former) 8/26/2005 Pollution detected in groundwater DEP directed the property owner to On-site supply well was sampled and was non- 13 Watrous Street above standards may threaten a identify and sample wells up to 500 feet detected. 13 offsite potable wells were drinking water well. away from the site for pollutants identified and sampled. One residential well East Hampton detected at the site. was replaced and the neighboring commercial well contains TCE above the drinking water ation level.

Updated as of: Wednesday, September 8, 2021 All Districts Page 14 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

East Hampton Site/location Date Notified Type of Hazard Response Action

Parcel 8/26/2005 Pollution detected in groundwater DEP directed the property owner to Two nearby wells were sampled and target 103 Main Street above standards may threaten a identify and sample wells up to 500 feet compounds were below standards. drinking water well. away from the site for pollutants East Hampton detected at the site.

Summit Thread Powerhouse (former) 1/13/2009 Pollution in the top two feet of soil DEP reviewed information provided and Additional excavation work is being done from 13 Watrous Street may pose a risk to human health determined that warning signs are 2019-20. Soil contains high levels of PCBs as a result of direct contact. posted and the polluted soil is in a and chlorinated solvents. Status of work is East Hampton secure and fenced area, limiting the uncertain. It is not clear if the soil is covered or potential for contact. if appropriate signage is present.

Water Tower Property 7/27/2006 Pollution was detected in a DEP directed the property owner to A well receptor survey was conducted in 2006. Walnut Avenue drinking water well above provide an alternate supply of potable Sampling indicated exceedances of dieldrin. standards. Pollution detected in water for polluted wells and identify and CTDEEP installed treatment systems at those East Hampton groundwater above standards sample wells up to 500 feet away from properties that have exceedances. may threaten a drinking water the site for pollutants detected at the well. site. East Hartford Site/location Date Notified Type of Hazard Response Action

Pratt & Whitney 9/17/2015 Pollution in the top two feet of soil DEEP directed the property owner to Contamination is under a parking lot and poses 400 Main Street may pose a risk to human health provide annual status reporting of short no exposure risk if pavement is maintained. as a result of direct contact. term protective measures that have Semi-annnual inspections will be performed East Hartford been implemented, until hazard has and annual status reports will be provided been abated.

Pratt and Whitney 10/22/1998 Pollution detected in groundwater Remediation is being conducted under Groundwater pollution determined to not 400 Main Street that discharges to a surface water RCRA Corrective Action Program. significantly impact surface water and aquatic body may pose a risk to aquatic life. No additional abatement action necessary. East Hartford life. Polluted groundwater Venting system installed to prevent impact to beneath an occupied building indoor air quality. could affect indoor air quality. East Haven Site/location Date Notified Type of Hazard Response Action

Cinque Industrial Park 11/6/2003 Pollution in the top two feet of soil DEP directed the property owner to Property owner submitted plan for investigation. 509 Laurel Street may pose a risk to human health submit a plan to identify the extent of as a result of direct contact. polluted soil, notify site occupants, and East Haven limit access to the polluted soil.

Updated as of: Wednesday, September 8, 2021 All Districts Page 15 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

East Lyme Site/location Date Notified Type of Hazard Response Action

East Lyme Landfill 5/26/2000 Pollution detected in groundwater DEP directed the property owner to Monitoring program implemented. Roxbury Road that discharges to a surface water determine site specific conditions of body may pose a risk to aquatic ground and surface water East Lyme life. hydrogeology, and determine if the reported pollution is adversey affecting surface water quality.

East Lyme Landfill 3/11/1999 Pollution detected in groundwater DEP directed the property owner to Monitoring program implemented. Roxbury Road that discharges to a surface water determine site specific conditions of body may pose a risk to aquatic ground and surface water East Lyme life. hydrogeology, and determine if the reported pollution is adversey affecting surface water quality.

European Auto 8/4/2015 Pollution detected in groundwater DEEP approved the mitigation plan and 1well identified and 1 well sampled. Pollution 8 Colton Road above standards may threaten a requested that all wells within 500 feet detected significantly below standards. drinking water well. downgradient be sampled for the Property connected to public water. 1 well East Lyme pollutants detected at the site. remains on vacant commercial property within 500 ft of site. Vacant property currently in probate court.

Residence 1/10/2019 Pollution in the top two feet of soil DEEP directed the property owner to Owner action pending. 63 Scott Road and vicinity may pose a risk to human health inform persons with potential for as a result of direct contact. exposure, post warning signs, and East Lyme install a fence to limit access to the polluted soil until the site is cleaned up.

Residence 10/29/2018 Pollution was detected in a DEEP directed the property owner to Owner action pending. 63 Scott Road drinking water well above identify and sample nearby wells for standards. pollutants detected at the site. East Lyme East Windsor Site/location Date Notified Type of Hazard Response Action

Former First National Cleaners 4/8/2021 Pollution detected in groundwater DEEP directed the property owner to Owner action pending: test of groundwater and 148 North Road (Rear) above standards may threaten a conduct quaterly groundwater and potable wells, evaluate indoor air quality and drinking water well. Polluted potable well monitoring, determine the determine extesion of pollution in soil and East Windsor groundwater beneath an occupied extent of pollution (soil and groundwater. building could affect indoor air groundwater) and evaluate indoor air quality. quality.

Former First National Cleaners 4/8/2021 Pollution detected in groundwater DEEP directed the property owner to Owner action pending: test of groundwater and 148 North Road (Rear) above standards may threaten a conduct quaterly groundwater and potable wells, evaluate indoor air quality and drinking water well. Polluted potable well monitoring, determine the determine extesion of pollution in soil and East Windsor groundwater beneath an occupied extent of pollution (soil and groundwater. building could affect indoor air groundwater) and evaluate indoor air quality. quality.

Updated as of: Wednesday, September 8, 2021 All Districts Page 16 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Easton Site/location Date Notified Type of Hazard Response Action

Residence 6/29/2012 Pollution detected in groundwater DEEP is working with the property Source of pollution removed to the extent 220 Banks Road above standards may threaten a owner to investigate the extent of the possible, monitoring program implemented. drinking water well. pollution and to sample the onsite Adjacent property wells sampled in February Easton supply well and identify and sample 2017 with no pollution detected. Onsite well nearby wells for pollutants detected at tested 2018 no pollution detected above the site. drinking water standards.

Residential Property 10/14/2004 Pollution detected in groundwater DEP directed the property owner to Source of pollution removed. The well water 78 Mile Common above standards may threaten a identify and sample wells onsite and up supply has been determined potable. No other drinking water well. to 500 feet away from the site for wells within 500 feet of release area. Easton pollutants detected at the site. Ellington Site/location Date Notified Type of Hazard Response Action

CRRA Ellington Landfill 5/13/2019 Pollution was detected in a DEEP reviewed the initial mitigation Impacted potable well not currently in use. If Sadds Mill Road (Route 140) drinking water well but is below actions and a plan for additional reactivated, bottled water will be provided. standards. evaluation. Monitoring wells and nearby potable wells will Ellington continue to be sampled.

O.J. Thrall, Inc. 11/14/2011 Pollution was detected in a DEEP directed the property owner to re- The supply well currently is not in use. 78 Abbott Road monitoring water well but is below sample an unused supply well if it is standards. reactivated. If still impacted a Ellington mitigation plan must be implemented.

Residential Property 11/18/2009 Pollution was detected in a DEP directed the property owner to All residential wells sampled and were non- 132 Mountain Street drinking water well above provide bottled water to impacted detect for petroleum hydrocarbons. standards; pollution was detected properties, continue quarterly Remediation conducted to remove onsite Ellington in a drinking water well but is monitoring of drinking water supply underground oil tank. Further monitoring below standards; and pollution wells, expand receptor survey and pending. detected in groundwater above generate a remedial plan to cleanup standards may threaten a remaining impacted soil. drinking water well. Enfield Site/location Date Notified Type of Hazard Response Action

A.K.O. Inc. 9/16/2003 Pollution detected in groundwater DEP directed the property owner to DEP installs treatment systems at wells if 110 Broad Brook Road above standards may threaten a identify and sample nearby wells for found to be polluted above standards. DEP drinking water well. pollutants detected at the site. Consent Order with Town provides for Enfield subsequent connection of impacted and threatened homes to public water.

A.K.O. Inc. 11/12/2003 Pollution was detected in a DEP directed the property owner to DEP installs treatment systems at wells if 110 Broad Brook Road drinking water well above sample wells up to 1000 feet from the found to be polluted above standards. DEP standards. site for pollutants present at the site. Consent Order with Town provides for Enfield subsequent connection of impacted and threatened homes to public water.

Updated as of: Wednesday, September 8, 2021 All Districts Page 17 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Enfield Site/location Date Notified Type of Hazard Response Action

Enfield Gas Spill 12/20/2018 Pollution detected in groundwater DEEP directed the responsible party to Groundwater will contiuned to be sampled until 1-91 Exit 49 Southbound Exit above standards may threaten a continue to monitor the groundwater hazard condition has been abated. drinking water well. around the release area until the hazard Enfield condition has been abated.

PTI Industries, Inc. 8/21/2017 Pollution detected in groundwater DEEP directed the property owner to Potable wells sampled with no detection of 2 Peerless Way above standards may threaten a continue with plan to sample contaminants of concern. Monitoring wells will drinking water well. downgradient potable wells and continue to be sampled. Enfield continue to sample onsite monitoring wells. Fairfield Site/location Date Notified Type of Hazard Response Action

Mercedes Benz of Fairfield 9/27/2013 Pollution in the top two feet of soil DEEP reviewed information provided Access is restricted; no specific abatement 450 Scofield Avenue may pose a risk to human health and determined that the polluted soil is action necessary. Removal of soil with PCBs as a result of direct contact. under pavement and in a secure and greater than SEH concentrations performed Fairfield fenced area, limiting the potential for 11/15. Report submitted to DEEP. contact. Benzo(a)pyrene soil to be kept inaccessible using Land Use Restriction.

Mill Hill Elementary School 4/6/2020 Pollution in the top two feet of soil DEEP reviewed information provided Site secured and fence and landscaping fabric 635 Mill Hill Terrace may pose a risk to human health and determined that the public was installed to limit the potential for contact with as a result of direct contact. notified and polluted soil is beneath polluted soil. Excavation and disposal of soil is Fairfield landscaping fabric in a secure and planned as soon as COVID-19 response- fenced area, limiting the potential for related restrictions allow. contact and requested periodic status confirmation reports.

Railroad Bridge 1/3/2005 Pollution in the top two feet of soil DEP reviewed information provided and Access is restricted because site is in fenced North Benson Road may pose a risk to human health determined that the polluted soil is in a rail corridor; no specific hazard abatement as a result of direct contact. restricted-access rail corridor, limiting action necessary. Annual status reporting Fairfield the potential for contact. expected.

Town of Fairfield Waste Water Treatment Plant 7/7/2020 Pollution in the top two feet of soil DEEP directed the property owner to Area covered with 6" of stone dust, plastic, 205 Richard White Way may pose a risk to human health submit a plan to identify the extent of protective matting and woodent timbers to as a result of direct contact. polluted soil, notify site occupants, and prevent contact with people and machinery Fairfield remove the polluted soil. onsite. Town intends to install fence and post notifications following completion of delineation sample collection.

Updated as of: Wednesday, September 8, 2021 All Districts Page 18 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Farmington Site/location Date Notified Type of Hazard Response Action

Commercial Property 1/24/2005 Pollution was detected in a DEP determined that no action is Well not in use; no specific hazard abatement 232 Colt Highway (Route 6) drinking water well but is below required because the well is the only action necessary. DEP recommended retesting standards, and other pollution well in the area, is currently unused, the well when it is again in service. Farmington detected in groundwater above and the detected pollution in it is standards may also threaten this significantly less than the standard. drinking water well.

FM2330 12/20/2013 Pollution detected in groundwater DEEP directed the property owner to Threatened well sampled and did not detect 1387 Farmington Avenue above standards may threaten a conduct the proposed abatement any contaminant of concern. Well is being drinking water well. action. The groundwater will be sampled annually until groundwater remediated. Farmington sampled and the threatened potable well will be monitored annually. If groundwater conditions change additional abatement actions will be conducted.

Mobil Service Station #01-QQF 5/18/2006 Pollution detected in groundwater DEP directed the property owner to Nearby supply well was sampled and no 435 Main Street above standards may threaten a collect samples from the threatened volatile organic chemicals were detected. On- drinking water well. supply well and provide an alternate site monitoring wells exhibit trend of decreasing Farmington supply of drinking water if concentrations. contamination is detected.

Residential Property 10/10/2002 Pollution was detected in a DEP reviewed sampling data and No specific hazard abatement action was 231 Coppermine Road drinking water well but is below determined pollution is significantly requested. standards. below standards, and the water is safe Farmington for human consumption. Franklin Site/location Date Notified Type of Hazard Response Action

7-Eleven 8/1/2008 Pollution detected in groundwater DEP required additional sampling of On-site well and two nearby wells sampled and 15 Route 32 above standards may threaten a onsite and two nearby identified wells were not impacted by groundwater plume. drinking water well. for pollutants detected at the site. Ongoing monitoring of groundwater being Franklin conducted at the site.

7-Eleven 4/12/2006 Pollution detected in groundwater DEP directed the property owner to Two wells identified and sampled, pollution 15 Route 32 above standards may threaten a identify and sample potable water either not detected or detected but below drinking water well. supply wells up to 500 feet away from standards. Franklin the site for pollutants detected at the site.

Pete's Tire Barn 9/12/2016 Pollution detected in groundwater DEEP directed the property owner to 11 wells identified and 4 wells sampled in 2017. 15 Murphy Road above standards may threaten a identify and sample wells up to 500 feet Pollution not detected. Additional monitoring of drinking water well. away from the site for pollutants on-site and nearby wells requested but no Franklin detected at the site. responses.

Updated as of: Wednesday, September 8, 2021 All Districts Page 19 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Glastonbury Site/location Date Notified Type of Hazard Response Action

Residential Property 6/9/2005 Pollution was detected in a DEP directed the property owner to Remedial system installed; residential water 57 High Ridge Road drinking water well but is below sample the threatened wells periodically supply well sampled and no volatile organic standards. for pollutants detected at the site, and compounds detected above standards. Also, Glastonbury create a long-term monitoring plan. no volatile organic compounds detected in most downgradiant monitoring wells. Granby Site/location Date Notified Type of Hazard Response Action

Old Stagecoach Road Area 12/12/2016 Pollution detected in groundwater DEEP directed the property owner to Downgradient potable wells tested and did not Old Stagecoach Road above standards may threaten a implement actions proposed in the contain any contaminants of concern. drinking water well. hazard notification. The actions will Granby include sampling down gradient residential properties and continued sampling of monitoring wells quarterly. Greenwich Site/location Date Notified Type of Hazard Response Action

Ceci Brothers, Inc. 6/30/2021 Pollution detected in groundwater DEEP directed the property owner to 740 North Street above standards may threaten a sample the onsite supply well and drinking water well. identify and sample nearby wells for Greenwich pollutants detected at the site.

Fairview Country Club 2/7/2008 Pollution detected in groundwater DEP directed the property owner to Identified well was sampled, pollution was not 1241 King Street above standards may threaten a sample the identified wells within 500 detected. Monitoring program implemented. drinking water well. feet for pollutants detected at the site. Greenwich

Greenwich High School 11/8/2011 Pollution in the top two feet of soil DEEP reviewed information provided Some chlordane SEHN pollution removed; 10 Hillside Road may pose a risk to human health and determined that the polluted soil is other pollution (PCBs) remain in restricted as a result of direct contact. in a secure, restricted, and fenced-in access / inaccessible areas. Additional site Greenwich area, limiting the potential for contact. investigations to be performed. Long term remedy to be developed.

Ludor Corporation 8/7/2008 Polluted groundwater beneath an DEP reviewed sampling data and No specific hazard abatement action necessary. 371 East Putnam Avenue occupied building could affect determined that the groundwater indoor air quality. pollution does not in fact pose a Greenwich significant threat to indoor air quality.

Merritt Parkway Rest Stop - Greenwich 3/24/2010 Pollution detected in groundwater DEEP directed the property owner to Leaking underground tank, impacted soil and Merritt Parkway above standards may threaten a sample nearby wells for pollutants groundwater removed. Groundwater treatment drinking water well. detected at the site and to continue to began Dec 2012 and trend decreasing. Greenwich operate the groundwater remediation Pollution not detected in downgradient system. monitoring wells. 4 drinking water wells tested; pollution not detected.

Updated as of: Wednesday, September 8, 2021 All Districts Page 20 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Greenwich Site/location Date Notified Type of Hazard Response Action

Western Middle School 1/25/2017 Pollution in the top two feet of soil DEEP reviewed information provided Access is restricted by fencing. Additional 1 Western Junior Highway may pose a risk to human health and determined that the polluted soil is characterization performed. Remedial as a result of direct contact. in a secure and fenced area, limiting approach under consideration. Greenwich the potential for contact and requested that warning signs be posted and annual status confirmation reports be submitted. Groton Site/location Date Notified Type of Hazard Response Action

Buckeye Marine Oil Terminal 1/5/2016 Pollution detected in groundwater DEEP directed the property owner to Monitoring program implemented. 443 Eastern Point Road that discharges to a surface water implement a monitoring program and body may pose a risk to aquatic further evaluate the threat to surface Groton life. water and aquatic life.

Electric Boat 10/19/1998 Pollution detected in groundwater DEP directed the property owner to Groundwater threat to surface water being 75 Eastern Point Road that discharges to a surface water continue with the established plan and evaluated for site specific conditions by owner. body may pose a risk to aquatic schedule for invstigation and Groton life. remediation of property under the EPA Corrective Action Program.

Pfizer Electrical Duct Bank 12/12/2000 Pollution in the top two feet of soil DEP determined that because the No specific abatement action necessary 33 Shennecossett Road may pose a risk to human health contaminated soil is beneath paved provided conditions remain as evaluated. as a result of direct contact. surface, there is no risk to human Groton health and no abatement action is necessary. Guilford Site/location Date Notified Type of Hazard Response Action

Mobil Service Station #01-QBA 7/1/2005 Pollution detected in groundwater DEP directed the property owner to Offsite well owner denied access for sampling. 1164 Boston Post Road above standards may threaten a identify and sample wells up to 500 feet Downgradient wells on site have been non- drinking water well. away from the site for pollutants detect for the target compounds. Additional Guilford detected at the site. monitoring is ongoing.

Residential Property 6/23/2006 Pollution was detected in a DEP directed the property owner to Six wells identified and sampled for 103 Daniel Avenue drinking water well above maintain and monitor an installed constituents detected at the subject property. standards. treatment system for the polluted well, Only 106 Daniels Ave had pollution present. Guilford provide a list of wells inventoried in the Carbon filters in place at 106 and latest area, and expand the sampling program sampling was non-detect in untreated water. to other nearby wells.

Updated as of: Wednesday, September 8, 2021 All Districts Page 21 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Haddam Site/location Date Notified Type of Hazard Response Action

Cockaponset Maintenance Facility 6/20/2018 Pollution detected in groundwater DEEP directed the property owner to 3 wells identified and sampled with trace 18 Ranger Road above standards may threaten a sample the onsite supply well and amount of MTBE detected in well serving 17 & drinking water well. sample nearby wells for pollutants 18 Ranger Road. Potable wells at 30 Ranger Haddam detected at the site. Road and 78 Beaver Meadow were non-detect.

Haddam Town Garage 6/20/2001 Pollution was detected in a DEP reviewed the sampling data and The groundwater pollution is being addressed 103 Depot Road drinking water well but is below directed the property owner to perform by the town of Haddam as required by Order standards. Pollution detected in a survey of supply wells within a 500 #4793. Haddam groundwater above standards foot radius of the site and test the may threaten a drinking water surveyed wells for contaminants found well. on site.

Haddam Town Garage 6/17/2002 Pollution was detected in a At the time of notification, no Based on a visual inspection of the site, 103 Depot Road drinking water well above acknowledgment was issued, because contact with the pollution located in the top two standards. response to an earlier notification was feet of soil is limited due to the area being Haddam already addressing many of the issues. paved. The groudwater pollution is being Pollution in the top two feet of soil addressed by the town of Haddam as required may pose a risk to human health by Order #4793. as a result of direct contact.

Hall Farm Estate 11/1/2006 Pollution above standards was DEP requested the notifier's client Wells in vicinity of a suspected release area Haddam Neck Road detected in a total of six drinking and/or property owner to provide an have been identified and sampled; bottled water wells, two of which are not alternate supply of potable water to water is being provided to affected residences. Haddam in use. Pollution below standards properties with wells polluted above was detected in two drinking Drinking Water Standards, and to water wells. provide a plan to monitor affected and potentially affected wells.

Jaspers (former) 12/31/2007 Pollution detected in groundwater DEP directed the former property owner Groundwater sampled in 11 residential wells 206 Saybrook Road above standards may threaten a to resample the onsite supply well and within 500 feet of the subject site. No drinking water well. identify and sample wells up to 500 feet contaminants associated with the notification Haddam away from the site for pollutants (SEHN) were identified in groundwater in any of detected at the site. the residential water supply wells.

Tylerville BP Facility #61-11042 (Former) 5/9/2011 Pollution detected in groundwater DEP recommended actions to be taken Site is now under DEEP enforcement order. 1598 Saybrook Road above standards may threaten a in a letter addressed to Mr. Michael Responsible party is actively monitoring drinking water well. Devino, dated May 18, 2011. Please potable water wells in the area. Haddam refer to this letter for the recommended actions.

Tylerville BP Facility #61-11042 (former) 6/23/2009 Pollution detected in groundwater DEP directed the property owner to 19 wells identified and 16 wells sampled, 2 1598 Saybrook Road above standards may threaten a sample the onsite supply well, sample commercial properties with pollution above drinking water well. wells within 500 ft. that have not yet standards found, advised of condition, and are Haddam been sampled, and provide sample now using bottled water as an alternative results and a map of supply well supply. Monitoring and DEP actions ongoing. locations previously identified.

Updated as of: Wednesday, September 8, 2021 All Districts Page 22 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Hamden Site/location Date Notified Type of Hazard Response Action

Cables Property 8/21/2007 Pollution detected in groundwater DEP directed the property owner to Two wells were identified within 750 ft.: 87 87 Kimberly Road above standards may threaten a sample the onsite supply well and Kimberly was sampled and non-detect , 61 drinking water well. identify and sample any wells up to 750 Kimberly could not be sampled because the Hamden feet away from the site for pollutants property is condemned. Sampled well detected at the site. pollutants were found at levels below drinking water standards.

Commercial Property 11/21/2017 Pollution was detected in a DEEP directed the property owner to 695 Sherman Ave has hooked up to public 26 Corporate Ridge Road drinking water well above sample the polluted well quarterly for water with the supply well no longer in use. standards; additional pollution the pollutants detected at the site, and Sampling of the well located at 709 Sherman Hamden was detected in a drinking water advise DEEP of any changes. Ave was non-detect for contamination and will well but is below standards. be sampled quarterly for 1 year. Hartford Site/location Date Notified Type of Hazard Response Action

151 New Park LLC 10/6/2008 Pollution in the top two feet of soil DEP directed the property owner to Temporary containment in place with fencing. 151 New Park Avenue may pose a risk to human health investigate the site under the Property Site currently being remediated under the as a result of direct contact. Transfer Program and maintain Property Transfer Program. Hartford temporary containment with vegetation and fencing to limit access to polluted soil until exposure risk is eliminated.

John C. Clark Jr. Elementary School 4/12/2019 Pollution in the top two feet of soil DEEP reviewed a report of initial Fencing and signinage is in place and will be 75 Clark Street may pose a risk to human health mitigation actions and a plan for maintained around soil that exceeds hazard as a result of direct contact. additional evaluation, mitigation and criteria until excavation is conducted. Hartford abatement.

Kent Cleaners (Former) 8/29/2017 Polluted groundwater beneath an DEEP directed the property owner to A sub-slab vapor mitigation system is in 887-891 Park Street occupied building could affect continue monitoring and maintainng the operation at the site since 2016. volatile indoor air quality. sub-slab vapor mitigation system and organic chemicals have not been detected in Hartford continue to sample the onsite downgradient monitoring wells. Regular monitoring wells. reporting expected, but pending.

Sand Park (Parcel G, Brownfields Site R) 8/16/1999 Pollution in the top two feet of soil DEP directed the town to contact DEP Additional Investigation did not detect soil 1450 Main Street may pose a risk to human health when soil is to be abated. concentrations above hazard condition. Fence as a result of direct contact. placed around property. Hartford

Updated as of: Wednesday, September 8, 2021 All Districts Page 23 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Harwinton Site/location Date Notified Type of Hazard Response Action

Reynolds Foundry (former) 2/17/2012 Pollution detected in groundwater DEEP directed the propety owner to Receptor survey was conducted and the 131 Clearview Ave above standards may threaten a implement the actions proposed in part downgradient wells were tested detecting no drinking water well. IV of the Signigicant Environmental contaminants of concern in 2012. Owner is not Harwinton Hazard Notiification, which include reporting to DEEP and may be subject to identifying and sampling nearby supply enforcement. wells and further evaluating the source of pollution. Hebron Site/location Date Notified Type of Hazard Response Action

Turshen Mill (Former) 4/25/2017 Pollution detected in groundwater DEEP directed the property owner to All wells sampled, pollution either not detected 459 Church Street above standards may threaten a sample the onsite and abutting wells or detected but below standards. drinking water well. within 500 feet for pollutants detected at Hebron the site. Kent Site/location Date Notified Type of Hazard Response Action

Bulls Bridge Garage 12/12/2008 Pollution detected in groundwater DEP directed the property owner to Well receptor survey found drinking water wells 337 Kent Road (US Route 7) above standards may threaten a continue to sample the on-site supply on adjacent properties. On and off-site wells drinking water well. well and to identify and sample wells up sampled and pollution not detected. Quarterly Kent to 500 feet away from the site for monitoring program implemented for on-site pollutants detected at the site. and nearest off-site well. Killingly Site/location Date Notified Type of Hazard Response Action

Dayville XtraMart 8/25/2008 Pollution detected in groundwater DEP directed the property owner to Quarterly groundwater monitoring and semi 439 Hartford Turnpike (Route 101) above standards may threaten a sample the polluted wells quarterly for annual drinking water well monitoring drinking water well. the pollutants detected at the site. DEP implemented with semi annual reports. Killingly also requested that the property owner Drinking water wells continue to have no implement a proposed soil vapor survey. detection of pollution.

MPI Label Systems 8/7/2007 Pollution was detected in a DEP directed the property owner to Carbon filters installed at two homes. On- 24 Doring Drive drinking water well above provide bottled water to the properties going monitoring being performed by DEEP. standards. Pollution was detected with polluted wells. Killingly in a different drinking water well but is below standards.

Updated as of: Wednesday, September 8, 2021 All Districts Page 24 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Killingworth Site/location Date Notified Type of Hazard Response Action

Country Cloverleaf 12/6/2001 Pollution was detected in a At the time of notification, DEP Three potable supply wells identified were 237 Route 81 (Killingworth Circle) drinking water well above determined that contaminants of sampled in May/June 2017 and were non- standards. concern were below their respective detect for constituents analyzed. On-site supply Killingworth criteria in the supply well. well sampled quarterly and non-detect for VOCs and MTBE levels were below action level. Ledyard Site/location Date Notified Type of Hazard Response Action

Mobil Home Park 4/9/2003 Pollution detected in groundwater DEP directed the property owner to New well drilled on property. 940 Long Cove Road above standards may threaten a provide treatment for polluted wells, and drinking water well. a report of additional actions taken. Ledyard Pollution in top two feet of soil DEP reviewed information provided and Polluted soil removed; no additional hazard may pose a risk to human health determined the polluted soil has been abatement action necessary. as a result of direct contact. removed, eliminating the exposure risk. Lisbon Site/location Date Notified Type of Hazard Response Action

Lisbon Arco (former) 1/20/2017 Pollution detected in groundwater DEEP approved the property owner's 5 wells identified and 5 wells sampled. 1 South Burnham Highway above standards may threaten a plan to sample the onsite supply well Pollution not detected or significantly below drinking water well. and identify and sample four wells standards. Monitoring program implemented. Lisbon located on abutting properties for pollutants detected at the site.

Tunnel Hill Mobile Home Park 5/3/2017 Pollution detected in groundwater DEEP directed the property owner to All wells sampled, pollution either not detected 15 Tunnel Hill Court - Lot 13 above standards may threaten a sample the onsite supply well and 3 or detected but below standards. drinking water well. identified nearby wells for pollutants Lisbon detected at the site and to report results quarterly. Litchfield Site/location Date Notified Type of Hazard Response Action

Agway 8/9/2000 Pollution was detected in a DEP reviewed the sampling results and On-site water supply well monitored by nearby 7 Iffland Pond Road drinking water well but is below determined that the supply well is not Torrington Landfill. standards. used for drinking, and the pollution Litchfield source is already undergoing monitoring.

Bantam Shell 9/12/2014 Pollution detected in groundwater DEEP directed the property owner to Two of the three nearest potable wells (one 827 Bantam Road (Rt 202) above standards may threaten a perform the proposed further refused access) sampled in Oct 2014. No drinking water well. delineation and to complete well pollution detected. Further site investigation Litchfield receptor survey. and cleanup ongoing.

Updated as of: Wednesday, September 8, 2021 All Districts Page 25 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Litchfield Site/location Date Notified Type of Hazard Response Action

Residence 7/28/1999 Pollution detected in groundwater DEP directed the property owner to Water treatment system installed by owner. No 21 Scherr Thoss Lane above standards may threaten a continue actions described in the addititonal abatement action necessary. drinking water well. notification to abate the hazard Litchfield condition.

Torrington Agway 10/12/2000 Pollution detected in groundwater DEP reviewed the sampling data and Source of petroleum pollution removed. 7 Iffland Pond Road above standards may threaten a determined that the onsite supply well Groundwater samples post-removal did not drinking water well. is not used for drinking. exceed criteria. Three off-site and one on-site Litchfield supply wells tested. Pollution detected related to landfill. On-site water supply well monitored by Torrington Landfill. Lyme Site/location Date Notified Type of Hazard Response Action

Residence 11/9/2018 Pollution detected in groundwater DEEP reviewed a report of initial Owner action pending. 29 Jushuatown Road above standards may threaten a mitigation actions and a plan for drinking water well. additional evaluation, mitigation. Lyme Mansfield Site/location Date Notified Type of Hazard Response Action

Dick's Automotive 12/14/2007 Pollution detected in groundwater DEP directed the property owner to Eastern Highlands Health District sampled 644 Middle Turnpike above standards may threaten a sample the onsite supply well and drinking water wells in the area and no impacts drinking water well. identify wells up to 500 feet away from were noted. Mansfield the site.

Husky Mobil (Drake Petroleum Co) 12/27/2007 Pollution was detected in a DEP directed the property owner to Sampling of neighboring well performed. 607 Middle Turnpike (Route 44) (Storrs) drinking water well above sample the onsite supply well and Carbon filter installed. DEP issued Order to standards. Pollution detected in identify and sample wells up to 500 feet Drake Petroleum for pollution abatement and Mansfield groundwater above standards away from the site for pollutants monitoring and maintenance of Carbon filter. may threaten a drinking water detected at the site. well.

Martys Service Center 6/9/2015 Pollution detected in groundwater DEEP required additional sampling of Action pending. 575 Middle Turnpike above standards may threaten a nearby identified wells within 500 feet drinking water well. for pollutants detected at the site. Mansfield

Marty's Service Center 11/12/1998 Pollution detected in groundwater DEP directed the property owner to 3 supply wells identified and 3 wells sampled, 575 Middle Turnpike above standards may threaten a sample the onsite supply well and pollution either not detected or detected but drinking water well. identify and sample nearby wells for below standards. Treatment system installed at Mansfield pollutants detected at the site. 2 supply wells. Monitoring program implemented.

Updated as of: Wednesday, September 8, 2021 All Districts Page 26 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Mansfield Site/location Date Notified Type of Hazard Response Action

Residential Property 10/17/2003 Pollution detected in groundwater DEP directed the property owner to Additional sampling conducted, pollution not 986 Storrs Road above standards may threaten a identify and sample nearby wells for detected or below standards. drinking water well. pollutants detected at the site. Mansfield

Southeast Elementary School 4/26/2019 Pollution was detected in a DEEP reviewed sampling data and Owner action pending. 134 Warrenville Road drinking water well but is below determined pollution in the well is below standards. standards, and the water is safe for Mansfield human consumption. Marlborough Site/location Date Notified Type of Hazard Response Action

Marlborough Landfill 9/26/2001 Pollution was detected in a DEEP reviewed sampling data and Ongoing monitoring program in conjunction 44 Quinn Road drinking water well but is below determined pollution in the well is below with Landfill program. standards. standards, and the water is safe for Marlborough human consumption. Additional testing is to be conducted as part of landfill monitoring.

PW3 9/10/1999 Pollution was detected in a DEEP reviewed additional sampling Monitoring program implemented by the Town. 34 Quinn Road drinking water well but is below data and determined pollution in the standards. well is below standards or not present Marlborough and the water is safe for human consumption. Additional testing is to be conducted as part of landfill monitoring.

PW5 9/10/1999 Pollution was detected in a DEEP reviewed additional sampling Monitoring program implemented by the Town. 26 Quinn Road drinking water well but is below data and determined pollution in the standards. well is below standards or not present Marlborough and the water is safe for human consumption. Additional testing is to be conducted as part of landfill monitoring.

Tanker Accident Spill 2018-00094 2/7/2018 Pollution detected in groundwater DEEP required additional sampling of All wells sampled, pollution either not detected South Road above standards may threaten a nearby identified wells for pollutants or detected but below standards. drinking water well. detected at the site. Marlborough Meriden Site/location Date Notified Type of Hazard Response Action

SNET Reporting Center 3/18/2020 Pollution in the top two feet of soil DEEP reviewed a report of initial SEH area below former pole storage are, 1441 North Colony Road may pose a risk to human health mitigation actions and established Arsenic in shallow soils, area has been as a result of direct contact. annual reports detailing the results of delieated fenced off and sinage in place. Meriden the quarterly inspections of interim Entire site is in PTP Investigation of full site controls under way. SEH area part of site wide assessment and Remedial Plan to follow

Updated as of: Wednesday, September 8, 2021 All Districts Page 27 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Middlebury Site/location Date Notified Type of Hazard Response Action

Lake Quassapaug Amusement Park, Inc. 5/3/2010 Pollution detected in groundwater DEP directed the property owner to Source of pollution removed. Two supply wells 2132 Middlebury Road above standards may threaten a sample the onsite supply well and identified and two wells tested. Pollution not drinking water well. identify and sample wells up to 500 feet detected. Monitoring program implemented for Middlebury away from the site for pollutants groundwater and supply wells. detected at the site. Middletown Site/location Date Notified Type of Hazard Response Action

Long Lane Juvenile Training Center 3/5/2002 Pollution in the top two feet of soil DEP directed the property owner to DEEP reviewed information provided and 170 Long Lane may pose a risk to human health continue to provide information to the determined that warning signs are posted and as a result of direct contact. Department as part of a continued site the polluted soil is in a secure and fenced area, Middletown wide investigation and remediation. The limiting the potential for contact. property is under DEP oversight for remediation due to a 1999 property transfer.

Long Lane School 10/10/2007 Pollution in the top two feet of soil DEP directed the property owner to DEEP reviewed information provided and 170 Long Lane may pose a risk to human health continue to provide information to the determined that warning signs are posted and as a result of direct contact. Department as part of a continued site the polluted soil is in a secure and fenced area, Middletown wide investigation and remediation. The limiting the potential for contact. property is under DEP oversight for remediation due to a 1999 property transfer.

Long Lane School 2/17/2012 Pollution in the top two feet of soil DEEP staff are already involved with a Remediation Action Plan approved. Soil mixing 170 Long Lane may pose a risk to human health detailed cleanup of the site. The site is is remedy. Work is held up due to lack of state as a result of direct contact. secure and there are plans to deal with funding. Area is a vacant field. Middletown any remaining contamination throughout the site including but not limited to pesticides and coal ash.

Sumner Creek LLC 1/5/2007 Pollution detected in groundwater DEP directed the property owner to Evaluation of on-site soil and groundwater with 20 Mill Street that discharges to a surface water resample the groundwater to further assessment of off-site conditions suggest body may pose a risk to aquatic evaluate the threat to surface water and pollution is regional in nature. Further Middletown life. aquatic life. upgradient evaluation necessary.

Wesleyan University Long Lane Campus 5/17/2007 Presence of coal ash throughout DEP directed the property owner to DEEP reviewed information provided and 170 Long Lane the site may pose a risk to human continue to provide information to the determined that warning signs are posted and health as a result of direct contact. Department as part of a continued site the polluted soil is in a secure and fenced area, Middletown wide investigation and remediation. The limiting the potential for contact. property is under DEP oversight for remediation due to a 1999 property transfer.

Updated as of: Wednesday, September 8, 2021 All Districts Page 28 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Milford Site/location Date Notified Type of Hazard Response Action

Commercial Property 12/8/2006 Polluted soil gas beneath an DEP directed the property owner to Soil vapor extraction system installed but 561-587 New Haven Avenue occupied building could affect characterize the extent of impact on owner discontinued its operation. 5/23/17 indoor air quality. groundwater and soil gas, assess the issued Pollution Abatement Order #229 Milford indoor air quality, propose controls to mitigate this impact, and conduct an inventory of water supply wells within 500 feet of the site.

Commercial Property 2/15/2007 Pollution in the top two feet of soil DEP directed property owner to submit Soil vapor extraction system installed but 561-587 New Haven Avenue may pose a risk to human health letter report of actions as stated in owner discontinued its operation. Pollution as a result of direct contact. DEP's 12/18/2006 acknowledgement Abatement Order #229 issued 5/23/17. Milford letter regarding similar hazard Polluted groundwater beneath an condition. Notification of conditions not occupied building could affect required per statute, as pollution indoor air quality. reported was below thresholds. Monroe Site/location Date Notified Type of Hazard Response Action

Cross Hill Service Center 12/31/2015 Pollution detected in groundwater DEEP directed the property owner to 7 wells identified and 6 wells sampled, pollution 515 Monroe Turnpike above standards may threaten a identify water supply wells located either not detected or detected but below drinking water well. within 500 feet of the site and sample standards. Monitoring program implemented. Monroe any on-site supply wells and supply wells located at adjacent properties located within 500 feet for pollutants detected at the site.

Residential Property 12/6/2001 Pollution was detected in a DEP determined that actions already Contaminated soil removed. Water treatment 556 Pepper Street drinking water well above taken limited short-term exposure risk. system installed. DEEP attempted to re-test standards. well in 2014; no response from owner. Hazard Monroe will remain open but no further action by DEEP will be taken since source mitigation limits potential future risk.

Route 25 Powersports 4/25/2014 Pollution detected in groundwater DEEP directed the property owner to Two supply wells sampled for petroleum 126 Main Street above standards may threaten a sample the onsite supply well and hydrocarbons and none were detected. drinking water well. supply wells identified within 500 feet of Monroe the site for pollutants detected at the site.

Updated as of: Wednesday, September 8, 2021 All Districts Page 29 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Montville Site/location Date Notified Type of Hazard Response Action

Ash disposal site 5/29/2007 Pollution detected in groundwater DEP directed the property owner to Nearby drinking water wells were sampled and 128 Moxley Road above standards may threaten a fence the area, assess the potential for were non-detect for the pollutants at the site. drinking water well. the contaminated surface water to Montville impact an upgradient pond and water On-going evaluation of surface water body Pollution detected in groundwater supply well, and develop a plan to being conducted. that discharges to a surface water abate impacted surface and ground body may pose a risk to aquatic water. life.

CT State Police Troop E Montville Barracks 5/11/2017 Pollution detected in groundwater DEEP directed the property owner to One onsite and two nearby potable wells were Gov. John Davis Lodge Turnpike (I 395) above standards may threaten a impletment groundwater monitoring at sampled. All non-detected. Groundwater drinking water well. the site and continue sampling the monitoring program implemented. Montville threatened wells for the pollutants detected at the site.

Hunts Brook Property 5/29/2020 Pollution in the top two feet of soil Property owner posted signs and Access to site limited by a chain fence and 128 Moxley Road may pose a risk to human health maintains a fence to limit access to the warning signs. The 3 Polluted soil areas were as a result of direct contact. polluted soil. also fenced and high visibility warning signs Montville posted. Polluted soil delineation activities completed in September 2020.

Shantok Motors 4/16/2003 Pollution detected in groundwater DEP directed the property owner to Wells identified and sampled, pollution not 2246 Route 32 above standards may threaten a sample the on-site supply well and to detected. No additional hazard abatement drinking water well. identify and sample wells up to 500 feet action necessary. Montville from the site for pollutants detected at the site.

Town of Montville 4/25/2013 Pollution in the top two feet of soil DEEP reviewed information provided Polluted soil is located beneath pavement. No 14 Bridge Street may pose a risk to human health and determined that the polluted soil is current actions necessary other than ensuring as a result of direct contact. under pavement limiting the potential that pollution remains isolated by pavement Montville for contact. DEEP requested the until remediation is performed. property owner ensure the pavement remains in place until the site is remediated. Naugatuck Site/location Date Notified Type of Hazard Response Action

Karo Manufacturing Site (former) 12/1/2003 Pollution was detected in a DEP installed water treatment systems Properties with polluted wells on David Street 285 Great Hill Road drinking water well above at properties with polluted wells and (8,18,28,38,48,58,68), Ramsey Avenue standards. threatened wells were monitored. (79,80), and Gail Drive (103) connected to Naugatuck Properties with polluted wells were public water supply. The Borough of subsequently connected to public water Naugatuck implemented monitoring program supply. for 7 closest wells. Pollution not detected.

Sarracco Mechanical Services, Inc. 9/29/2004 Pollution detected in groundwater DEP directed the property owner to Wells sampled; pollution not detected or 71 Naugatuck Drive above standards may threaten a identify wells within 1,000 ft of the site detected significantly below standards. drinking water well. and to sample three identified nearby Naugatuck wells for pollutants detected at the site.

Updated as of: Wednesday, September 8, 2021 All Districts Page 30 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

New Britain Site/location Date Notified Type of Hazard Response Action

Apartment Building 3/17/2017 Polluted groundwater beneath an DEEP directed the property owner to Indoor air sampling was conducted in the 238 North Street occupied building could affect submit a plan to determine if indoor air basement of the Apartment Building and indoor air quality. quality is being affected and, if so, results are pending. Owner not responding. New Britain recommend a course of action.

Brothers Dry Cleaners & Dyers, Inc. 7/29/2005 Polluted groundwater beneath an DEP directed the property owner to Property itself is currently vacant. The building 234 North Street occupied building could affect determine the extent of the problem has bee razed by the City of New Britain in indoor air quality. and provide a plan of action. 2018-2019. 2016 gw data shows New Britain contamination not migrating. New Canaan Site/location Date Notified Type of Hazard Response Action

Residence 4/14/2020 Pollution detected in groundwater DEEP directed the property owner to 1 adjacent well identified and sampled. 64 Hemlock Hill Road above regulatory criteria may sample the onsite monitoring and Pollution detected significantly below threaten a drinking water well. supply well and identify and sample standards. Monitoring program implemented. New Canaan nearby wells for pollutants detected at No additional abatement action necessary. the site.

Service Plaza Route 15 Northbound New Canaa 11/28/2014 Pollution detected in groundwater DEEP directed the property owner to One of two locations was found to be on public Service Plaza Route 15 Northbound above standards may threaten a sample two identified nearby wells for water, no testing necessary. Second location drinking water well. pollutants detected at the site. sampled, pollution not detected. Remediation New Canaan of source area conducted in 2014. Groundwater monitoring program implemented. New Fairfield Site/location Date Notified Type of Hazard Response Action

Fairwood Shopping Center / Candlewood Playho 8/23/2005 Pollution was detected in a DEP directed the property owner to Water treatment system installed at one well. State Routes 37 & 39 drinking water well above submit a plan to continue quarterly Monitoring program implemented for standards. monitoring of at-risk supply wells and groundwater and four threatened wells. New Fairfield provided bottled water for private residences with pollution over applicable criteria. New Haven Site/location Date Notified Type of Hazard Response Action

85 East Street Terminal 7/5/2001 Pollution detected in groundwater DEP reviewed the sampling data and Site access is restricted while under 85 East Street that discharges to a surface water determined that because the DEP was remediation. Work at site is progressing under body may pose a risk to aquatic already aware of the contamination and Consent Order #COWSMT 16-001. New Haven life. abatement measures are already implemented, no immediate action is required.

Updated as of: Wednesday, September 8, 2021 All Districts Page 31 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

New Haven Site/location Date Notified Type of Hazard Response Action

Amity Shopping Plaza 7/12/2016 Pollution detected in groundwater DEEP reviewed sampling data for the Monitoring conducted in April 2018 indicated Amity Road & Wilbur Cross above standards may threaten a threatened wells and determined that contamination was non-detect in the three drinking water well. pollution is not in fact present in the on-site monitoring wells that are closest to the New Haven wells. potable supply wells.

Amtrack Cedar Hill Maintenance of Way Base 2/17/2006 Pollution in the top two feet of soil DEP directed the property owner to Warning signs posted, site secured, and fence 255 Welton Street (Rear) may pose a risk to human health continue proposed actions and to installed to limit the potential for contact with as a result of direct contact. inform persons with potential for polluted soil. New Haven exposure, post warning signs and install a fence to limit access to the polluted soil until the site is cleaned up.

Doyles Custom Cleaners Inc. (Former) 12/11/2018 Pollution in the top two feet of soil DEEP reviewed information provided No additional abatement action necessary 203 Alden Avenue may pose a risk to human health and determined that the polluted soil is provided periodic confirmation of effectiveness as a result of direct contact. under pavement, limiting the potential of actions is provided. New Haven for contact and requested periodic status confirmation reports.

East Shore Substation 1/6/2012 Pollution in the top two feet of soil DEEP directed the property owner to Disturbed soil has been removed and 600 Connecticut Avenue (aka 1 Waterfront Stree may pose a risk to human health inform persons with potential for remaining contaminated soil has been covered as a result of direct contact. exposure to limit access to the polluted by one foot of clean fill, limiting potential New Haven soil. exposure.

Former Magnus Co., Inc. 6/25/2014 Pollution in the top two feet of soil DEEP directed the property owner to Access is restricted. Monitoring and 50 Eddy Street may pose a risk to human health maintain the fencing and paved areas maintenance of the measures restricting as a result of direct contact. to limit exposure to the polluted soil access to be conducted and reported annually. New Haven until the site is cleaned up and to inform all persons with the potential for soil contact of the hazard condition.

New England Linen Supply Co., Inc. 9/16/2014 Pollution in the top two feet of soil DEEP reviewed information provided The polluted soil is considered inaccessible 149 Derby Avenue may pose a risk to human health and determined that the polluted soil is and an ELUR will be placed on the property as as a result of direct contact. under pavement, limiting the potential part of the remedial strategy. New Haven for contact.

Olin C-Tract 12/28/1998 Pollution in the top two feet of soil DEP reviewed information provided and Site is secured and fence installed to limit the 24 Science Park may pose a risk to human health determined that access to the site is potential for contact with polluted soil. as a result of direct contact. restricted, limiting the potential for Maintenance of controlled condition will New Haven contact. DEP directed the property continue until soil is remediated by the owner. owner to provide a schedule for investigation and abatement of the hazard.

Simkins Industries, Inc. 11/18/2008 Pollution in the top two feet of soil DEP reviewed information provided and Access is restricted. Monitoring and 260 East Street may pose a risk to human health determined that the soil pollution does maintenance of the measures restricting as a result of direct contact. not pose a significant threat because it access to be conducted and reported annually. New Haven is isolated under pavement.

Updated as of: Wednesday, September 8, 2021 All Districts Page 32 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

New Haven Site/location Date Notified Type of Hazard Response Action

United Illuminating East Shore Substation 12/9/2016 Pollution detected in groundwater DEEP reviewed information provided A Sreening Level Ecological Risk Assessment 1 Waterfront Street that discharges to a surface water and determined that the groundwater was conducted and the results indicated that body may pose a risk to aquatic pollution does not in fact significantly contaminated groundwater from the site is not New Haven life. threaten aquatic life. the sole source of contamination in sediments. A Plan is being drafted to address site-wide contamination.

Vacant Lot Owned by Von Rol Isola USA, Inc. 3/1/2001 Pollution in the top two feet of soil DEP directed the property owner to Fence has been installed to limit the potential 122-128 Chapel Street may pose a risk to human health post warning signs and install a fence for contact with polluted soil; and erosion of the as a result of direct contact. or pavement to limit access to the surface soil is prevented by densely overgrown New Haven polluted soil. vegetation.

Williams Terminals Holdings, LP 11/25/2002 Pollution in the top two feet of soil DEP directed the property owner to Site access is restricted while under 85 East Street may pose a risk to human health post warning signs and install a fence remediation. Work at site is progressing under as a result of direct contact. or secure the area to limit access to the Consent Order #COWSMT 16-001. New Haven polluted soil. New Milford Site/location Date Notified Type of Hazard Response Action

Affordable Auto Motive 9/21/2009 Pollution detected in groundwater DEP directed the property owner to 11 wells identified and 8 wells sampled (3 32 Executive Center Drive above standards may threaten a sample the eleven identified water refused access) in Oct 2009. Pollution was not drinking water well. supply wells within 500 feet of the site detected. Wells resampled in Feb/Mar 2013 New Milford for pollutants detected at the site. due to another reported hazard. No contamination detected. Site investigation/remediation ongoing.

Century Enterprise Center (former Century Brass 12/9/2004 Pollution was detected in a DEP directed the property owner to One well sampled. Pollution detected was 12 Scoville Street drinking water well but is below sample the polluted well quarterly for significantly below standards. Monitoring standards. pollutants detected at the site, and program implemented. New Milford advise DEP of any changes.

Northville Market 6/10/2016 Pollution detected in groundwater DEEP directed the property owner to Nearby potable wells sampled (7 out of 9 301 Litchfield Road above standards may threaten a sample the onsite and nearby identified permitted access) and no contamination was drinking water well. wells for pollutants detected at the site found. Additional monitoring wells to be New Milford and report the results and to provide a installed. On-site potable well sampling plan for future action. program initiated and ongoing.

Park Cadillac Dealership (former) 9/22/2014 Pollution was detected in a DEEP directed the property owner Nearest downgradient wells permitting access 149 Danbury Road drinking water well but is below implement their proposal to install a sampled. Pollution either not detected or standards. filter or connect to the water main. detected below standards. Resample of well New Milford DEEP also directed the property owner with original pollution detection did not confirm to identify if there are other wells near detection. Site investigation and remediation the site. ongoing.

Updated as of: Wednesday, September 8, 2021 All Districts Page 33 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Newtown Site/location Date Notified Type of Hazard Response Action

Consumers Petroleum Friendly Service Citgo St 9/25/2001 Pollution was detected in a DEP directed the property owner to Five wells identified and five wells sampled. 151 South Main Street drinking water well above identify and sample threatened wells for Pollution not detected or detected below standards. the pollutants detected at the site and standards. Monitoring program implemented Newtown to install water treatment systems, if for on-site supply well and groundwater necessary.

Fairfield Hills Hospital (Parcel 5) 11/5/2001 Pollution in the top two feet of soil DEP reviewed the sampling data and Site security and landscaping limit potential 20A Mile Hill Road may pose a risk to human health determined that because of limited exposure. Maintenance of controlled condition as a result of direct contact. human exposure to the impacted soil, will continue until soil is remediated by owner. Newtown the site presents no current risk to human health and no immediate action is necessary.

SCB Office Park 1/27/2003 Pollution in the top two feet of soil DEP directed the property owner to Warning signs posted and fence installed to 153 South Main Street may pose a risk to human health post warning signs and install a fence limit the potential for contact with polluted soil. as a result of direct contact. to limit access to the polluted soil. DEP The fence and signage are being maintained Newtown also directed the property owner to annually. The extent of arsenic in soil above submit a plan to investigate the area hazard criterion has been determined. and clean up pollution. North Haven Site/location Date Notified Type of Hazard Response Action

Lot 2 / 2A 5/10/2002 Pollution in the top two feet of soil DEP directed the property owner to Engineered control installed at the site 250/300 Universal Drive (fka 175 Universal Drive may pose a risk to human health continue with the spill control activity at rendered the contaminated soils inaccessible. as a result of direct contact. the site to prevent the spread of the North Haven contaminant.

Pharmacia & Upjohn Company 10/16/1998 Polluted groundwater may DEP reviewed report submitted that No potable supply wells within 500 feet. 41 Stiles Lane threaten supply well. Polluted determined that no water supply wells Impacted soil under engineered cap. Impacted surface soil may pose risk to had been affected, that notification was groundwater prevented from reaching surface North Haven human health. Polluted in error. Review also indicated that EPA water with subsurface barrier wall and groundwater under occupied is overseeing the investigation and groundwater extraction. Vapors beneath building may affect indoor air. remediation of the site, including building controlled through extraction. Polluted groundwater discharging groundwater treatment. to surface water may pose risk to aquatic life. North Stonington Site/location Date Notified Type of Hazard Response Action

North Stonington Elementary School 8/14/2017 Pollution in the top two feet of soil DEEP reviewed a report of initial Owner action pending. 311 Norwich-Westerly Road may pose a risk to human health mitigation actions and a plan for as a result of direct contact. additional evaluation, mitigation [and North Stonington abatement.

Updated as of: Wednesday, September 8, 2021 All Districts Page 34 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Norwalk Site/location Date Notified Type of Hazard Response Action

City of Norwalk - Ryan Park 1/6/2017 Pollution in the top two feet of soil DEEP reviewed information provided Soil with PCBs greater than significant hazard 10 Raymond Street may pose a risk to human health and determined that polluted soil posing concentrations (15 mg/kg) excavated, removed as a result of direct contact. a hazard has been rendered and transported for off-site disposal. Soils with Norwalk inaccessible eliminating the exposure concentrations of PCBs greater than 1 mg/kg risk. DEEP directed the property owner also removed for off-site disposal. to provide annual updates until the hazard is permanently abated.

Norwalk Manufactured Gas Plant (MGP) (Former 1/15/2019 Pollution detected in groundwater DEEP directed the property owner to Groundwater threat to surface water evaluated 7, 11 & 12 Harbor Ave (Former) that discharges to a surface water submit a plan to investigate the extent for site specific conditions and determined to body may pose a risk to aquatic and degree of groundwater pollution, not significantly impact surface water and Norwalk life. and to evaluate the pollution migration aquatic life. On-going groundwater monitoring, and the threat to surface water and with annual reporting. Site investigations aquatic life. contine under 22a-133x. Norwich Site/location Date Notified Type of Hazard Response Action

Austins Garage 10/12/2006 Pollution detected in groundwater DEP directed the property owner to Nine wells were identified within 500 feet 53 Taftville Occum Road above standards may threaten a identify and sample wells up to 500 feet downgradient of the site. Volatile organic drinking water well. away from the site for pollutants chemicals were not detected. Further Norwich detected at the site, and also to assess evaluation of site data did not suggest a risk of the potential for organic vapor intrusion vapor intrusion to nearby residences. at three addresses.

Norwich Fish & Game 10/28/2008 Pollution was detected in a DEP requested that the City of Norwich Well is sampled twice per year by the City of 44 Browning Road drinking water well but is below evaluate potential impact to Norwich as part of its monitoring of standards. downgradient receptors in consultation groundwater in the vicinity of the Rogers Road Norwich with the DEP. landfill. Concentrations in water remain below maximum contaminant levels.

Rogers Road Landfill 10/15/2010 Pollution was detected in a DEP reviewed sampling data for the Monitoring program implemented. Annual Rogers Road drinking water well but is below affected wells and determined pollution monitoring on site conducted in accordance w/ standards. in the well is significantly below Consent Order SW-405. Norwich standards, and the water is safe for human consumption.

Shell-Branded Gas Station 6/29/2016 Pollution detected in groundwater DEEP directed the property owner to Monitoring program implemented. 170 Taftville Occum Road that discharges to a surface water evaluate the nature, extent and degree body may pose a risk to aquatic of groundwater pollution to determine Norwich life. the threat to surface water and aquatic life near the site, as well as assessing potential threats to nearby supply wells.

Updated as of: Wednesday, September 8, 2021 All Districts Page 35 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Old Lyme Site/location Date Notified Type of Hazard Response Action

Bestway Citgo Gasoline Service Station 9/8/2003 Pollution detected in groundwater DEP directed the property owner to Sampling conducted, only one well had 281 Shore Road (Route 156) above standards may threaten a identify and sample nearby wells for pollution above standards. Property with drinking water well. pollutants detected at the site. polluted well is seasonal and has been Old Lyme connected to public water. Well is still present, but not used for drinking water.

Judge's Farm LLC 6/19/2017 Pollution was detected in a DEEP reviewed a report of initial Monitoring program implemented. 3 Old Shore Road drinking water well but is below mitigation actions and a plan for standards. additional evaluation, mitigation and Old Lyme abatement. Old Saybrook Site/location Date Notified Type of Hazard Response Action

Paul Burdick Oil Company 2/25/2016 Pollution detected in groundwater DEEP directed the property owner to On-site potable well and potable wells at 954 950 Middlesex Turnpike above standards may threaten a sample the onsite and identified wells and 973 Middlesex Turnpike and 3 Otter Cove drinking water well. within 500 feet for pollutants detected at were sampled for petroleum-related Old Saybrook the site. constituents. All four wells were non-detect. Plainfield Site/location Date Notified Type of Hazard Response Action

Parcel 12/6/2004 Pollution in the top two feet of soil DEP directed the property owner to Polluted soil excavated and removed from site. 154-156 Plainfield Pike may pose a risk to human health submit a plan to identify the extent of Also, on-site well and two nearest off site wells as a result of direct contact. polluted soil, limit access to the polluted were sampled for pesticides, volatile organic Plainfield soil, and test a nearby well for the chemicals, and metals including arsenic. None pollutants present on the site. of the wells were found to be polluted. Plainville Site/location Date Notified Type of Hazard Response Action

Getty Station #688 (former) 10/18/2013 Pollution detected in groundwater DEEP directed the property owner to A sensitive receptor survey was conducted. 301 East Street above standards may threaten a sample identified wells for the pollutants Two properties have potable water supply drinking water well. detected at the site. wells. One well is regulated by and routinely Plainville monitored for the Dept. of Health. Another well was sampled and no pollution was detected.

Peck Spring Corp 10/6/1998 Pollution detected in groundwater DEP directed the property owner to Surface water unlikely to be acutely impacted. 89 Whiting Street above standards may threaten a continue to conduct investigation and DEEP tested 5 residential wells where access drinking water well. remediation of property under the granted. Pollution not detected, except at 1 Plainville Property Transfer Program. where owner installed treatment system. Some Pollution detected in groundwater connected to public water. DEEP advised that discharges to a surface water continued well testing. body may pose a risk to aquatic life.

Updated as of: Wednesday, September 8, 2021 All Districts Page 36 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Portland Site/location Date Notified Type of Hazard Response Action

Former Port Oil 3/27/2020 Pollution in the top two feet of soil DEEP reviewed information provided Action pending. 222 and 248 Brownstone Ave may pose a risk to human health and determined that polluted soil posing as a result of direct contact. a hazard has been removed eliminating Portland the exposure risk. [DEEP directed the property owner to provide a report of actions taken at the site.

Portland Depot DEEP facility 6/26/2014 Pollution detected in groundwater DEEP directed the property owner to 9 potable wells were sampled and all non- 163 Great Hill Road above standards may threaten a sample nearby wells for pollutants detected. DEEP has determined that there is drinking water well. detected at the site. no impact to potable supply wells in the area. Portland Site investigation is ongoing.

Rogers & Hubbard Facility (former) 12/28/1998 Pollution in the top two feet of soil DEP reviewed information provided, Warning signs posted, site secured, and fence 309 Airline Avenue may pose a risk to human health determined that access to site is installed to limit the potential for contact with as a result of direct contact. restricted, limiting potential for contact, polluted soil. Site has been paved since 2001. Portland and requested notification if condition Site entered the Property Transfer Program in changes. DEP directed property owner 2014. DEEP expects annual reports. to provide plan for investigation and abatement. Preston Site/location Date Notified Type of Hazard Response Action

Lake of Isles Boy Scout Camp 10/29/1998 Pollution detected in a drinking DEP indicated that the Property Pumping system installed to remove polluted Lake of Isles Road & Watson Road water well, some above standards Transfer Program is aware of the groundwater at source area. Monitoring and some below standards. condition and that further actions may program implemented for 4 supply wells and Preston Pollution detected in groundwater be required. groundwater monitoring wells; pollution above standards may threaten a detected at action level. Monitoring program drinking water well. continues.

Moran's Service 5/5/2016 Pollution was detected in a DEEP directed the property owner to Two wells identified and sampled. Both found 212 Route 2 drinking water well above resample the onsite supply well and to have pollution above standards in untreated standards. Pollution detected in identify and sample nearby wells for water, but water treatment systems are already Preston groundwater above standards pollutants detected at the site. in use. Signs posted and bottled water may threaten a drinking water provided. New treatment systems to be well. installed. Monitoring ongoing. Prospect Site/location Date Notified Type of Hazard Response Action

Sunoco Gasoline Service Station 12/6/2012 Pollution was detected in a DEEP directed the property owner to Survey in September 2012 identified wells. 68 Waterbury Road drinking water well but is below identify and sample wells up to 500 feet Samples were reported as none detected for standards. Pollution detected in away from the site for pollutants volatile organic chemicals and petroleum. The Prospect groundwater above standards detected at the site. on-site potable well has MTBE below may threaten a drinking water standards. A monitoring program has been well. initiated and is ongoing. SVE operating

Updated as of: Wednesday, September 8, 2021 All Districts Page 37 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Putnam Site/location Date Notified Type of Hazard Response Action

ConnDOT - Putnam Maintenance and Repair Fa 5/1/2018 Pollution detected in groundwater DEEP reviewed a report of initial 3 wells identified and 2 wells sampled; 3rd well 3 Industrial Park Road above standards may threaten a mitigation actions and a plan for did not respond to sampling request. Pollution drinking water well. additional evaluation, mitigation [and not detected in 2 wells. Monitoring program Putnam abatement]. implemented.

Gomes Total Chrysler 6/23/2003 Pollution detected in groundwater DEP directed the property owner to Sampling conducted, pollution below 157 Providence Pike above standards may threaten a identify and sample wells up to 500 feet standards. Site remediated under property drinking water well. from the site for pollutants detected at transfer program. No additional monitoring Putnam the site. required for hazard abatement.

Putnam Precision Moulding, Inc. 11/19/2010 Pollution detected in groundwater DEP directed the property owner to Semi-annual monitoring program implemented 11 Danco Road above standards may threaten a sample the threatened wells semi- and continues. drinking water well. annually for the pollutants detected at Putnam the site, and advise DEP of any changes. Ridgefield Site/location Date Notified Type of Hazard Response Action

Ace Tire & Autocenter 5/7/2019 Pollution detected in groundwater DEEP directed the property owner to Quarterly monitoring program and reporting 861 Ethan Allen Highway above standards may threaten a sample the threatened well and onsite implemented. drinking water well. monitoring wells quarterly for the Ridgefield pollutants detected at the site, and advise DEEP of any changes.

Commercial Property 10/1/2007 Pollution was detected in a DEP directed the property owner to According to the property owner, a charcoal Ethan Allen Highway drinking water well above provide the results of the receptor filter has been installed on the drinking water standards. survey to the DEP. supply system and a receptor survey has been Ridgefield initiated.

Residence 6/19/2020 Pollution detected in groundwater DEEP directed the property owner to On-site potable well was non-detect for ETPH 183 Great Hill Road above standards may threaten a sample the threatened wells quarterly and that all VOCs were non-detect and below drinking water well. Polluted for the pollutants detected at the site, CTDPH action levels. Majority of the Ridgefield groundwater beneath an occupied and advise DEEP of any changes. contamination associated with the former UST building could affect indoor air Results indicate that there is, in fact, no has been removed. ETPH in groundwater is quality. volatilization hazard present. decreasing and will naturaly atenuate.

Ridgefield European Moters, Inc. 3/18/2008 Pollution was detected in a DEP directed the property owner to Site being remediated. 746 Danbury Road drinking water well above maintain an existing treatment system, standards. and also required identification and Ridgefield sampling of supply wells within 500 feet for pollutants detected at the site.

Updated as of: Wednesday, September 8, 2021 All Districts Page 38 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Salem Site/location Date Notified Type of Hazard Response Action

Maple Shade General Store 4/11/2006 Pollution detected in groundwater DEP directed the property owner to Several drinking water wells identified and 428 Hartford Road above standards may threaten a identify and sample potable water sampled. Pollution not detected in drinking drinking water well. supply wells up to 500 feet away from water wells. Air sparging/soil vapor extraction Salem the site for pollutants detected at the system installed 2006. Ground water sampling site. durning 2013 indicates pollution not migrating offsite. Salisbury Site/location Date Notified Type of Hazard Response Action

Residence 10/25/2007 Pollution detected in groundwater DEP directed the property owner to On-site and eight surrounding water supply 433 Salmon Kill Road above standards may threaten a resample the onsite supply well and to wells sampled. Pollution not detected. drinking water well. identify and sample wells up to 500 feet Monitoring program implemented. Salisbury away from the site for pollutants detected at the site. Scotland Site/location Date Notified Type of Hazard Response Action

315 Pudding Hill Road Farm Property 6/17/2014 Pollution was detected in a DEEP directed the property owner to DEEP evaluated hazard condition, homeowner 315 Pudding Hill Road drinking water well above resample the onsite wells and nearby declined to sample and denied access, hazard standards. identified wells within 500 feet for will remain open until laboratory results of no Scotland pollutants detected at the site. pollution detected in drinking water well are received. Seymour Site/location Date Notified Type of Hazard Response Action

Diversified Electric 4/28/2008 Pollution was detected in a DEP directed the property owner to re- Well receptor survey found two off-site drinking 130-150 Silvermine Road drinking water well but is below sample the on-site supply well and to water wells within 500 feet of the site. standards. identify and sample wells up to 500 feet Quarterly monitoring program implemented (on Seymour away from the site for pollutants & off-site). For all wells sampled, pollution detected at the site. either not detected or detected but below standards. Simsbury Site/location Date Notified Type of Hazard Response Action

Residence 3/16/2016 Pollution was detected in a DEEP directed the property owner to The owner installed a carbon filter for the onsite 175 Hartford Road drinking water well above implement proposed actions to install well and sampled a downgradient supply well, standards. treatment on the affected water supply which was non-detect. Plan to remove Simsbury and identify and sample nearby wells. impacted soil.

Updated as of: Wednesday, September 8, 2021 All Districts Page 39 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

South Windsor Site/location Date Notified Type of Hazard Response Action

Mobil #01-QQA 6/11/2007 Petroleum products in DEP directed the property owner to Installed product recovery system and sampled 249 Oakland Road groundwater treaten a drinking implement a proposed plan to install a downgradient supply wells with no detection of water well. product recovery system, monitor petroleum products. Groundwater monitoring South Windsor potable water supply wells and continue being conducted. A surface water body is impacted to treat and monitor the impacted by free product migrating from the stream. site.

Pleasant Valley Elementary School 1/20/2021 Pollution in the top two feet of soil Install a temporary fence and warning Warning signs to be posted and fence to be 591 Ellington Road may pose a risk to human health signs to limit access to the polluted soil installed to limit the potential for contact with as a result of direct contact. and inform all persons with potential for polluted soil. Monitoring and maintenance of South Windsor soil contact the measures limiting potential for contact to be conducted and reported semi-annually.

Plunkett-Webster, Inc. 12/14/1999 Pollution detected in groundwater DEP required no action at the time of Onsite potable well and monitoring wells did 299 Strong Road above standards may threaten a notification, since no off-site wells were not detect any contaminants of concern and drinking water well. located within 500 feet and the on-site there are no wells within 500 ft downgradient. South Windsor well was not used for potable water.

Spelucin Property 5/13/2013 Pollution detected in groundwater DEEP directed the property owner to Downgradient drinking water wells sampled 1708 Ellington Road above standards may threaten a contiue to monitor onsite groundwater multiple times and contained no contaminants drinking water well. condition and submitt annual reports. of concern South Windsor Southbury Site/location Date Notified Type of Hazard Response Action

RoMatic Manufacturing Company 4/26/2019 Pollution detected in groundwater DEEP directed property owner to 1) Drinking water sampled in 2019 and 2020, 1200 Main Street South above standards may threaten a sample onsite, abutting, and seasonaly, and no pollution was detected. drinking water well. downgradient water supply wells within Groundwater at site monitored quarterly in Southbury 500 feet for pollutants detected at the 2019 and 2020 and showed declining trends. site, 2) provide a plan for further monitoring of water supply wells, 3) test monitoring wells quarterly.

Vacant Property 6/15/2016 Pollution detected in groundwater DEEP directed the property owner to Removal of source area in 2013. No on-site 1416 Southford Road above standards may threaten a sample the onsite and nearby identified supply well. 6 supply wells identified on drinking water well. wells for pollutants detected at the site adjacent properties; 5 tested. Pollution not Southbury and report the results, submit a well detected or detected below action levels in one receptor survey, and provide a plan for supply well. Groundwater and supply well future action. monitoring program implemented.

Updated as of: Wednesday, September 8, 2021 All Districts Page 40 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Southington Site/location Date Notified Type of Hazard Response Action

Commercial parcel 9/5/2017 Pollution detected in groundwater DEEP directed the property owner to Owner action pending. 1103 Queen Street above standards may threaten a continue to sample the onsite supply drinking water well. well and identify and sample nearby Southington wells for pollutants detected at the site. DEEP also directed property owner to continue to sample onsite groundwater monitoring wells. Sprague Site/location Date Notified Type of Hazard Response Action

Cumberland Farms Baltic 9/12/2018 Pollution detected in groundwater DEEP directed the property owner to Properties with abutting potable wells are 184-186 Main Street (Baltic) above standards may threaten a identify and sample nearby wells for currently vacant. Requested next closest drinking water well. pollutants detected at the site. downgradient potable wells be sampled. Sprague

Sprague Paperboard, Inc. 3/9/2001 Pollution was detected in a DEP directed the property owner to Site under Order WC 5229. 130 Inland Road drinking water well but is below submit a groundwater monitoring plan. standards. Sprague Stafford Site/location Date Notified Type of Hazard Response Action

Parcel 4/23/1999 Pollution was detected in a DEP requested sampling of affected Site inspection and two rounds of sampling 135 West Stafford Road drinking water well above wells and inspection of property to were completed and no contamination was standards. Pollution detected in determine the source of contamination. detected in these additional samples. Stafford groundwater above standards may threaten a drinking water well.

Tyco Printed Circuit Group (Stafford Division) 4/2/2002 Pollution detected in groundwater DEP directed the property owner to Several wells wells sampled, pollution either 4 Old Monson Road above standards may threaten a determine if water supply wells are not detected or detected but below standards. drinking water well. present within 500 feet downgradient of Several homes denied access to sample. Stafford the site and test any identified wells for Groundwater and surface water monitoring the contaminants found on site. program implemented.

Wain Property 2/24/1999 Pollution was detected in a DEP worked with the property owner to Carbon filters were installed at 4 properties and 36 Tyco Drive drinking water well above test the on-site well and identify and are being monitored under an approved plan. standards. Pollution was detected test additional wells within 500 feet. An updated well supply survey was completed Stafford in a drinking water well but is in 2010 and 4 additional properties were below standards. Pollution evaluated. detected in groundwater above standards may threaten a drinking water well.

Updated as of: Wednesday, September 8, 2021 All Districts Page 41 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Stamford Site/location Date Notified Type of Hazard Response Action

City Carting and Recycling 10/17/2012 Pollution detected in groundwater DEEP reviewed the well receptor No wells within 500 feet of the groundwater 39 and 42 Woodland Avenue above standards may threaten a survey information and determined that pollution; groundwater threat to surface water drinking water well. supply wells are not located in the area evaluated for site-specific conditions and Stamford and directed the property owner to determined to not significantly impact surface Pollution detected in groundwater investigate the extent and degree of water body or aquatic life. Site undergoing that discharges to a surface water groundwater pollution to evaluate the redevelopment. body may pose a risk to aquatic threat to surface water. life.

Commercial Property 1/22/2013 Pollution in the top two feet of soil DEEP directed the property owner to Area of polluted soil already paved, warning 860 Canal Street (aka 390 Ludlow Street) may pose a risk to human health identify the extent of polluted soil and sign posted. Groundwater threat to surface as a result of direct contact. secure the area to limit access to water evaluated for site specific conditions and Stamford polluted soil until the site is cleaned up determined to not significantly impact surface Pollution detected in groundwater and to sample groundwater to further water and aquatic life. Site undergoing that discharges to a surface water evaluate the threat to surface water and redevelopment. body may pose a risk to aquatic aquatic life. life.

Former Nexus, Inc. 7/6/2021 Pollution in the top two feet of soil DEEP directed the property owner to Annual inspection to be conducted to ensure 50 Sunnyside Avenue may pose a risk to human health inform persons with potential for area property restricted and soil is undisturbed. as a result of direct contact. exposure, post warning signs, and Annual report to include schedule and plan to Stamford install a fence to limit access to the remove impacted soil. polluted soil until the site is cleaned up.

UConn Parking Garage 10/13/2017 Pollution in the top two feet of soil DEEP reviewed information provided Most PCB impacted soil was removed after the 1194 Washington Boulevard may pose a risk to human health and determined that warning signs are garage was demolished. A few small areas as a result of direct contact. posted and the polluted soil is in a require excavation. Additional work plan to be Stamford secure and fenced area, limiting the submitted to DEEP. Offsite soil excavation potential for contact and requested activities to begin in spring 2019. Final results report on delineation and abatement pending. measures by April 2018 Stratford Site/location Date Notified Type of Hazard Response Action

Contract Plating Company (Former) 5/16/2017 Pollution in the top two feet of soil DEEP reviewed information provided Site secured and fence installed to limit the 540 Long Brook Avenue may pose a risk to human health and determined that the polluted soil is potential for contact with polluted soil. Removal as a result of direct contact. in a secure and fenced area, limiting of polluted soil is scheduled for late summer/ Stratford the potential for contact. DEEP early fall 2017. Remedial action report pending. directed owner to post signage and submit the abatement report as planned.

Stratford Army Engine Plant 10/28/1998 Pollution detected in groundwater DEEP reviewed information provided Groundwater plume not yet affecting surface 550 Main Street that discharges to a surface water and determined that the site is in a water. Site is being remediated. body may pose a risk to aquatic remedial program to further evaluate Stratford life. and abate the hazard.

Updated as of: Wednesday, September 8, 2021 All Districts Page 42 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Stratford Site/location Date Notified Type of Hazard Response Action

Stratford Army Engine Plant 2/25/1999 Pollution detected in groundwater DEP directed the property owner to Groundwater metals continue to be above 550 Main Street that discharges to a surface water submit a plan to identify using low flow criteria, posing future threat to surface water, body may pose a risk to aquatic sampling wells posing a threat to ecological risk evaluation in progress. Stratford life. surface water and aquatic life. Suffield Site/location Date Notified Type of Hazard Response Action

Mountain Road Shopping Center 11/17/1999 Polluted groundwater beneath an DEP required the owner to conduct Soil vapor extraction system in operation to 112-152 Mountain Road occupied building could affect remediation in accordance with the control vapors, and a temporary authorization indoor air quality. Hazard is in property transfer program. (TA-95) issued to inject permanganate to treat Suffield basement area that is not the pollution source. occupied and is used primarily for storage

Residential Property 8/15/2005 Pollution by fuel oil was detected DEP directed property owner to Treatment systems have been installed. Long- 1117 North Grand Street in a drinking water well. continue to sample potable water term monitoring and maintenance is conducted supply wells and maintain treatment by responsible party under Order SRD-221. Suffield systems. Thomaston Site/location Date Notified Type of Hazard Response Action

Thomaston Municipal 10/9/1998 Pollution was detected in a DEP indicated it was already aware of Monitoring data shows threatened drinking Maple Avenue & Reynolds Bridge drinking water well but is below the issue and that groundwater and soil water wells not affected by reported pollution or standards. Pollution detected in vapor treatment had already been significantly below standards. Groundwater Thomaston groundwater above standards initiated. Affected drinking water supply monitoring is ongoing. Water supply monitoring may threaten a drinking water well already receiving treatment. is ongoing as required by Department of Public well. Health.

Thomaston Xtramart - Sta. No. 10066 7/15/2019 Pollution detected in groundwater DEEP directed owner to determine if Owner action pending. 196 Pine Hill Road above standards may threaten a three nearby properties have supply drinking water well. wells and test them for pollutants Thomaston detected at the site; test nearby transient non-community well for pollutants detected at the site; and to continue groundwater monitoring.

Updated as of: Wednesday, September 8, 2021 All Districts Page 43 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Tolland Site/location Date Notified Type of Hazard Response Action gasoline station 3/28/2017 Pollution was detected in a DEEP directed the property owner to Action pending. 404 Merrow Road drinking water well above resample the onsite well and identify standards. Pollution detected in and sample the closest downgradient Tolland groundwater above standards well for pollutants detected at the site. may threaten a drinking water well.

Tolland XtraMart 9/22/2005 Pollution was detected in a DEP reviewed the data provided and Wells identified and sampled, pollution either 153 Hartford Turnpike drinking water well but is below concluded water in the supply well is not detected or detected but below standards. standards, and other pollution potable. DEP directed the property Tolland detected in groundwater above owner to implement their proposed plan standards may threaten a to study groundwater on-site and re- drinking water well. sample nearby supply wells to confirm groundwater quality. Torrington Site/location Date Notified Type of Hazard Response Action

D'Angelo Property 8/4/2003 Pollution detected in groundwater DEP reviewed information provided and Well not in use; no specific hazard abatement 981 Torringford Street above standards may threaten a determined that the property with the action necessary. drinking water well. threatened well is vacant and the well is Torrington disconnected from the house.

Lucianos Cleaners (Former) 12/27/2013 Pollution detected in groundwater DEEP directed the property owner to Under Property Transfer Program, site is being 233 East Main Street above standards may threaten a contiune the investigation and remediated and Verification is expected in drinking water well. remediation under the property transfer March 2021. Additional year of groundwater Torrington program. monitoring is necessary to demonstrate compliance with the requirements of the RSRs.

Wilson Dodge & Nissan 2/26/2003 Pollution detected in groundwater DEP directed the property owner to All identified wells that granted access were 1530 East Main Street above standards may threaten a identify and sample nearby wells for sampled for the contaminants of concern. drinking water well. pollutants detected at the site. Lead identified in the first sampling round was Torrington determined to be due to sampling error. All sampled supply wells were non-detect for the contaminants of concern. Vernon Site/location Date Notified Type of Hazard Response Action

Carlo Realty Associates LLC 11/14/2016 Pollution detected in groundwater Department directed property owner to Groundwater will be monitored, currently the on- 458 Talcottville Road above standards may threaten a continue to sample monitoring wells site potable well is non-detect for benzene and drinking water well. and on-site potable well until hazard groundwater plume is not migrating off-site. Vernon has been abated

Updated as of: Wednesday, September 8, 2021 All Districts Page 44 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Voluntown Site/location Date Notified Type of Hazard Response Action

Voluntown Shell 10/9/2012 Pollution detected in groundwater DEEP directed the property owner to 11 wells sampled, pollution either not detected 251 Main Street above standards may threaten a sample the onsite supply well and or detected but below standards. Monitoring drinking water well. identify and sample nearby wells for program implemented. Voluntown pollutants detected at the site. Waterbury Site/location Date Notified Type of Hazard Response Action

Jonathan E. Reed School 7/12/2018 Pollution detected in groundwater DEEP reviewed plan to further evaluate Groundwater threat to surface water evaluated 33 Griggs Street that discharges to a surface water the actual threat to surface water and for site-specific conditions and determined to body may pose a risk to aquatic aquatic life. To date, the pollution is not significantly impact surface water and Waterbury life. determined not likely to pose a risk to aquatic life. Ongoing monitoring program aquatic life, based on site-specific implemented. information, including the partially culverted brook.

Lot 6, Waterbury Industrial Commons 12/9/2013 Pollution detected in groundwater DEEP directed the property owner to Groundwater threat to surface water evaluated 1917 Thomaston Avenue that discharges to a surface water perform proposed groundwater for site specific conditions and does not appear body may pose a risk to aquatic monitoring and source investigation. to significantly impact surface water. Waterbury life. Subsequent resampling indicates that concentrations are decreasing. Evaluation of pollution sources is ongoing.

South End Disposal Area (SEDA) 5/14/1999 Pollution detected in groundwater DEP reviewed information provided and Groundwater threat to surface water evaluated 184 Municipal Road that discharges to a surface water determined that the groundwater for site specific conditions and determined to body may pose a risk to aquatic pollution does not in fact significantly not significantly impact surface water and Waterbury life. threaten aquatic life. aquatic life. Monitoring program implemented.

Yankee Gas Former Waterbury North MGP 9/13/2013 Pollution detected in groundwater DEEP directed property owner to Threat to surface water may originate from Jackson Street that discharges to a surface water evaluate nature, extent and degree of historic off-site operations, but still remains body may pose a risk to aquatic groundwater pollution to determine the present. Site remediation on-going. Waterbury life. threat to surface water and aquatic life near the site by providing site-specific dilution calculation and groundwater monitoring information

Yankee Gas Work Center 12/3/2015 Pollution detected in groundwater DEEP directed the property owner to Concentrations of Cd, Zn, and Cu in 47 Eagle Street that discharges to a surface water evaluate the nature, extent and degree groundwater samples collected exceeds body may pose a risk to aquatic of groundwater pollution to determine applicable hazard criteria. Groundwater and Waterbury life. the threat to surface water and aquatic surface water monitoring on-going. life near the site.

Updated as of: Wednesday, September 8, 2021 All Districts Page 45 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Watertown Site/location Date Notified Type of Hazard Response Action

Eyelematic Manufacturing Corp. Inc. 10/18/2005 Polluted groundwater beneath an DEP directed the property owner to No drinking water wells identified within 1/4 1 Seemar Road occupied building could affect identify private drinking water wells up mile. Monitoring wells installed at indoor air quality. to 1/4 mile away from the site; and to downgradient property line. Sub-slab Watertown submit a plan to characterize the depressurization system installed to limit vapor impact on indoor air quality and develop migration into building. Monitoring is ongoing. a remedy to limit the impact. West Hartford Site/location Date Notified Type of Hazard Response Action

University of Connecticut - Greater Hartford 3/10/2017 Pollution in the top two feet of soil DEEP requested that Uconn complete Impacted soil temporarily covered until soil is 1800 Asylum Avenue may pose a risk to human health implementation of the approved Soil fully remediated. Semi-annual inspection as a result of direct contact. Management Plan which included filter reports will be submitted. West Hartford fabric and mulch to isolate the soil until long-term abatement is completed. West Haven Site/location Date Notified Type of Hazard Response Action

Armstrong Facility (Former) 8/21/2017 Pollution in the top two feet of soil DEEP reviewed a report of initial Area with elevated concentrations of PCBs has 475 Elm Street may pose a risk to human health mitigation actions and a plan for been fenced limiting access to area and is as a result of direct contact. abatement of the impacted soils. covered in vegeation to prevent erosion. West Haven Pollution filly delineated. Clean-up plan submitted to US EPA in January, 2018. EPA has not yet approved Plan.

Baker Properties 7/25/2008 Pollution in the top two feet of soil DEP directed the property owner to Fence installed to limit the potential for contact 351 Morgan Lane may pose a risk to human health submit a plan to identify the extent of with polluted soil. Cleanup plan submitted to as a result of direct contact. polluted soil and remove the polluted EPA. West Haven soil. Westbrook Site/location Date Notified Type of Hazard Response Action

Westbrook XtraMart 2/11/2009 Pollution detected in groundwater DEP directed the responsible party to The two potable wells identified in the receptor 130 Boston Post Road above standards may threaten a submit an already completed sensitive survey are located more than 400 feet drinking water well. receptor survey, analytical results for upgradient of the subject site, posing only Westbrook two potable water suppply wells already minimal risk. sampled, and proof that a third potable water supply well did not exist.

Woody's of Westbrook (former) 7/2/2015 Pollution detected in groundwater DEEP directed the property owner to Based on results of sampling at 41 Trolley Rd, 1241 Boston Post Road above standards may threaten a sample the threatened well located at side-gradient location and distance to 41, on- drinking water well. 41 Trolley Road quarterly for the site wells will be monitored with annual Westbrook pollutants detected at the site. reporting until such a time that hazard condition no longer exists.

Updated as of: Wednesday, September 8, 2021 All Districts Page 46 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Westport Site/location Date Notified Type of Hazard Response Action

Metro North 9/19/2012 Pollution in the top two feet of soil DEEP reviewed information provided Soil has been excavated or rendered Station 1727+28 may pose a risk to human health and determined that the polluted soil is inaccessible; warning signs posted; access as a result of direct contact. located on a fenced active railroad line, restricted. Monitoring and maintenance of the Westport limiting the potential for contact. measures limiting potential for contact to be conducted.

Residential Property 5/16/2002 Pollution was detected in a DEP reviewed the sampling data for the On-site well tested 2002 & 2003; pollution 6 Clifford Lane drinking water well but is below supply well and determined the below standards. Owner installed filter system. standards. contaminants to be significantly below No response to repeated DEEP requests to re- Westport standards. sample. No further action by DEEP; risk to receptor unlikely due to substantial source and pollution removal. Wilton Site/location Date Notified Type of Hazard Response Action

Mobil Service Station No. 01-340 4/14/2010 Pollution was detected in a DEP directed the property owner to Underground tanks removed. Supply wells 932 Danbury Road drinking water well but is below resample the onsite supply well and sampled where access granted; pollution not standards. Pollution detected in sample 4 nearby wells for pollutants detected in tested off-site wells. Pollution Wilton groundwater above standards detected at the site and provide results detected in onsite supply well below standards. may threaten a drinking water of the proposed tank removal activities. Onsite groundwater and supply well monitoring well. ongoing.

Private Residence 10/23/2018 Pollution detected in groundwater DEEP reviewed sampling data and 32 wells identified and 32 wells sampled weeky 715 Ridgefield Road above standards may threaten a determined pollution in the well is below for 1 month, pollution either not detected or drinking water well. standards, and the water is safe for detected but below standards in all but one Wilton human consumption. DEEP requested well, which was replaced and abandoned in the submittal of a report summarizing June 2018. Regular sampling ongoing. work completed to date and a proposal outlining next steps.

Residence 12/16/2008 Pollution was detected in a DEP directed the local Health All wells sampled, pollution triggering the 30 Quail Ridge Road drinking water well above Department to provide an alternate hazard notification was not detected in standards. supply of potable water to the property subsequent testing (three rounds) of the well at Wilton owner and resample the well. DEP also 30 Quail Ridge Road . Monitoring program directed the Health Department to implemented and continues at the closed identify and samples wells up to 0.75 Wilton Landfill. miles from the Wilton Landfill.

Residence 6/26/2012 Pollution detected in groundwater DEEP directed the property owner to Source of pollution removed, monitoring 37 Kellogg Drive above standards may threaten a resample the on-site supply well and program implemented. drinking water well. monitoring wells and identify and Wilton sample nearby wells for pollutants detected at the site.

Updated as of: Wednesday, September 8, 2021 All Districts Page 47 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Wilton Site/location Date Notified Type of Hazard Response Action

Residence 12/31/2019 Pollution in the top two feet of soil DEEP directed the property owner to: Six adjacent wells identified and Town of Wilton 166 Nod Hill Road may pose a risk to human health submit a plan to identify the extent of assisting in obtaining access for sampling. as a result of direct contact. and remove polluted soil; Survey, sample results, remediation report, and Wilton Polluted groundwater beneath an identify/sample nearby wells; evaluate abatement/monitoring plan required by DEEP occupied building could affect potential threat to the pond; and ack. Onwer action pending indoor air quality. Pollution determine if indoor air quality onsite is detected in groundwater that affected. discharges to a surface wat

Residence 2/7/2020 Pollution was detected in a DEEP reviewed a report of initial Water treatment system installed. No 7 Ryders Lane drinking water well above mitigation actions. The onsite potable addititonal abatement action necessary, standards. well will continue to be monitored on a however monitoring and maintenance of the Wilton regular basis by the adjacent system is necessary. Additional monitoring will homeowner as due to a fuel oil release be completed under SEHN requirements for reported in December 2020. adjacent property 166 Nod Hill Road. Winchester Site/location Date Notified Type of Hazard Response Action

Winchester XtraMart 1/11/2007 Pollution detected in groundwater DEP directed the property owner to Groundwater flow direction determined and no 102 Colebrook River Road above standards may threaten a identify the nearest downgradient offsite downgradient drinking water wells identified drinking water well. well and test it for volatile organic within 500 ft. No hazard condition exists under Winchester compounds and petroleum, and also to the law. Further site investigation is planned by provide a map of groundwater flow responsible party. directions. Windham Site/location Date Notified Type of Hazard Response Action

Eastern CT Fire Training School 4/15/2019 Pollution was detected in a Re-sample the drinking water well and Owner action pending. 1 Fire School Road drinking water well but is below submitt a report on monitoring. standards. Windham Windsor Site/location Date Notified Type of Hazard Response Action

Best Cleaners 5/29/2018 Polluted groundwater beneath an DEEP directed the property owner to Owner will contiue to monitor groundwater 292 Poquonock Avenue occupied building could affect continue to offer the downgradient wells on a monthly basis and has offered to indoor air quality. property owner a sub-slab provide a remedial system to the downgradient Windsor depressurization system and increase residence.. the monitoring on the downgradient monitoring well.

Updated as of: Wednesday, September 8, 2021 All Districts Page 48 of 49 List of Selected Significant Environmental Hazards Reported to DEEP Period covering 10/01/1998 through 8/31/2021

Wolcott Site/location Date Notified Type of Hazard Response Action

Commercial Building 1/29/2014 Pollution detected in groundwater DEEP directed the property owner to All identified potable wells were sampled. All 1496 Wolcott Road above standards may threaten a sample the onsite supply well and the target compounds tested were below standards drinking water well. identified nearby wells for pollutants at point of water use. Site historical releases Wolcott detected at the site. were remediated. Resample onsite potable well for lead and VOCs. All non-detected.

Eagle Cleaners 1/17/2007 Pollution was detected in a DEP directed the property owner to Property connected to municipal water 4/07. 372 Wolcott Rd drinking water well but is below resample the onsite supply well and Additional investigation results submitted standards. identify and sample wells up to 500 feet 5/16/07. Only two wells sidegradient to Wolcott away from the site for pollutants pollution are still unsampled. Remediation detected at the site. under Property Transfer Act on going.

Town & Country Cleaners (former) 9/10/2019 Pollution was detected in a DEEP directed the property owner to re- Onsite well resampled, result after filter system 590 Wolcott Road drinking water well above sample the onsite supply well and is ND. Nearest well polluted below standards standards and pollution was sample nearby potable wells for but has treatment. Access not granted at Wolcott detected in other drinking water pollutants detected at the site. another nearby well but will contiue efforts.. wells, but below standards. Woodbridge Site/location Date Notified Type of Hazard Response Action

Parcel 9/23/2009 Pollution was detected in a DEP acknowledged receipt of this A treatment system was installed by the owner. 60 Woodfield Road drinking water well above SEHN and will follow up with the The raw and treated water is periodically standards. property owner regarding actions that sampled.In May, 2016 the water treatment unit Woodbridge have been, and must still be, taken. was changed out and a second unit was added. System still operational. Annual reporting. Woodstock Site/location Date Notified Type of Hazard Response Action

Woodstock Department Public Works Garage 5/19/2006 Pollution other than a substance DEP directed the property owner to Nearby wells identified and sampled. 215 Coatney Hill Road for which the commissioner has sample the onsite supply well and Monitoring program implemented. established a ground water identify and sample wells up to 1000 Woodstock protection criterion was detected feet away from the site for sodium and in a drinking water well. chloride.

Updated as of: Wednesday, September 8, 2021 All Districts Page 49 of 49