scovill industrial landill waterbury, ctwaterbury, ct site description: the site, encompassing about...

7
SITE UPDATE THE SUPERFUND PROGRAM protects human health and the environment by investigating and cleaning up often-abandoned hazardous waste sites and engaging communities throughout the process. Many of these sites are complex and need long-term cleanup actions. Those responsible for contamination are held liable for cleanup costs. EPA strives to return previously contaminated land and groundwater to productive use. U.S. EPA | HAZARDOUS WASTE PROGRAM AT EPA NEW ENGL AND Cleaning Up New England Scovill Industrial Landfll Waterbury, CT SITE DESCRIPTION: The Site, encompassing about 25-acres, is bounded to the north by residential properties along Newbury Street and Academy Avenue, to the east by a steep hill topped with residential properties abutting Academy Avenue, to the south by Meriden Avenue (State Route 69) with abutting commercial properties, and to the west by a steep hill topped by residential properties along Monroe Avenue. The Scovill Manufacturing Company (the Company) manufactured various metal parts, including brass buttons, belt buckles, clasps, and other products, using aluminum, chromium, copper, silver, tin, and zinc. In addition, the Company produced appliances, small motors, watches, injection molded plastics, and photographic equipment. The Company also produced numerous products for the military during World Wars I and II and the Korean War, including munitions, fuses, and brass artillery casings. The Company used the Site as a landfill from 1919 to the mid-1970s for disposal of ash, cinders, demolition debris, and other wastes it generated. Over time, as landfilled areas were filled in, Scovill sold off parcels for development to new owners. By the mid-1990s, the southern portion of the Site, which consists of approximately 18 acres, had been developed for residential and commercial uses. In 1988, the northern portion of the Site, referred to Area J (also known as the Calabrese parcel) (totaling 6.8-acres) was in the initial stages of development for an elderly housing complex when a number of capacitors, ash, cinder, crushed drums containing sludge material, metal waste, demolition debris and other waste materials were encountered at depths ranging between 8 and 20 feet below grade. The waste materials contained elevated levels of polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), and metals. In 1989, the development project was ordered to stop until the extent and degree of contamination was identified. In 1998, the Connecticut Department of Energy & Environmental Protection (CT DEEP) removed about 2,300 tons of PCB- contaminated soils and 18 capacitors, placed a temporary one-foot soil cap over the area and erected protective fencing around four of the almost seven acres of the parcel. KEY CONTACTS: ALMERINDA SILVA EPA New England Project Manager (617) 918-1246 [email protected] KATE MELANSON EPA New England Community Involvement Coordinator (617) 918-1491 [email protected] SHEILA GLEASON CT DEEP Project Manager (860) 424-3767 [email protected] GENERAL INFO: EPA NEW ENGLAND 5 Post Office Sq., Suite 100 Boston, MA 02109-3912 TOLL-FREE CUSTOMER SERVICE 1-888-EPA-7341 LEARN MORE AT: www.epa.gov/superfund/scovill August 2016 t printed on 100% recycled paper, with a minimum of 50% post-consumer waste, using vegetable-based inks

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Page 1: Scovill Industrial Landill Waterbury, CTWaterbury, CT SITE DESCRIPTION: The Site, encompassing about 25-acres, is bounded to the north by residential properties along Newbury Street

S I T E U P D A T E

T H E S U P E R F U N D P R O G R A M protects human health and the environment by investigating and cleaning up often-abandoned hazardous waste sites and engaging communities throughout the process Many of these sites are complex and need long-term cleanup actions Those responsible for contamination are held liable for cleanup costs EPA strives to return previously contaminated land and groundwater

to productive use

U S E P A | H A Z A R D O U S W A S T E P R O G R A M A T E P A N E W E N G L A N D

Cleaning Up New England

Scovill Industrial LandfillWaterbury CT

S I T E D E S C R I P T I O N The Site encompassing about 25-acres is bounded to the north by residential properties along Newbury Street and Academy Avenue to the east by a steep hill topped with residential properties abutting Academy Avenue to the south by Meriden Avenue (State Route 69) with abutting commercial properties and to the west by a steep hill topped by residential properties along Monroe Avenue

The Scovill Manufacturing Company (the Company) manufactured various metal parts including brass buttons belt buckles clasps and other products using aluminum chromium copper silver tin and zinc In addition the Company produced appliances small motors watches injection molded plastics and photographic equipment The Company also produced numerous products for the military during World Wars I and II and the Korean War including munitions fuses and brass artillery casings The Company used the Site as a landfill from 1919 to the mid-1970s for disposal of ash cinders demolition debris and other wastes it generated Over time as landfilled areas were filled in Scovill sold off parcels for development to new owners By the mid-1990s the southern portion of the Site which consists of approximately 18 acres had been developed for residential and commercial uses

In 1988 the northern portion of the Site referred to Area J (also known as the Calabrese parcel) (totaling 68-acres) was in the initial stages of development for an elderly housing complex when a number of capacitors ash cinder crushed drums containing sludge material metal waste demolition debris and other waste materials were encountered at depths ranging between 8 and 20 feet below grade The waste materials contained elevated levels of polycyclic aromatic hydrocarbons (PAHs) polychlorinated biphenyls (PCBs) and metals In 1989 the development project was ordered to stop until the extent and degree of contamination was identified In 1998 the Connecticut Department of Energy amp Environmental Protection (CT DEEP) removed about 2300 tons of PCB-contaminated soils and 18 capacitors placed a temporary one-foot soil cap over the area and erected protective fencing around four of the almost seven acres of the parcel

K E Y C O N T A C T S

A L M E R I N D A S I LV A

EPA New England Project Manager (617) 918-1246 silvaalmerindaepagov

K A T E M E L A N S O N

EPA New England Community Involvement Coordinator (617) 918-1491 melansonkateepagov

S H E I L A G L E A S O N

CT DEEP Project Manager (860) 424-3767 sheilagleasonctgov

G E N E R A L I N F O

E P A N E W E N G L A N D

5 Post Off ice Sq Suite 100 Boston MA 02109-3912

T O L L - F R E E

C U S T O M E R S E R V I C E

1-888-EPA-7341

L E A R N M O R E A T

wwwepagovsuperfundscovill

August 2016

t printed on 100 recycled paper with a minimum of 50 post-consumer waste using vegetable-based inks

S U P E R F U N D | H A Z A R D O U S W A S T E P R O G R A M A T E P A N E W E N G L A N D S I T E U P D A T E

The EPA and its contractors conducted investigations to support potential waste-removal efforts and evaluation of Site conditions On July 27 2000 EPA listed the Site on the National Priorities List (NPL) EPA conducted Phase I of the Remedial Investigation (RI) in the fall of 2002

In 2004 EPA issued an Administrative Order to the Potentially Responsible Party (PRP) Saltire Inc (the corporate successor to Scovill Manufacturing Company) to complete the remaining RI activities The PRPrsquos contractor conducted approximately 90 percent of the Phase II RI in 2004 but ceased all work after Saltire filed for bankruptcy in July 2004 EPA acquired the existing data for evaluation and conducted the Phase III RI between 2008 and 2011

In September 2013 EPA issued a Record of Decision (ROD) in which EPA specified a remedy to address current and future risk to human health at the Site based on direct contact with contaminants in soil and vapor intrusion from contamination beneath the apartment building located at 119 Store Avenue in Area E1

R E C E N T I N V E S T I G AT I O N S Between August 2014 and September 2015 EPA performed a pre-design investigation (PDI) in risk management areas E1 I and J The PDI involved sampling a number of parcels to further define the extent of contamination The findings of this PDI are outlined in pertinent part below

Area E1 Area E1 includes the property at 119 Store Avenue plus four abutting residential properties along Monroe Avenue Historical aerial photos indicated a possibility that fill from the Site may have been placed in the backyards of these four residential properties In August 2014 EPA collected soil samples from each of these properties to test whether chemicals in the soil exceeded remediation criteria The results of these tests indicate that soil in only one of the four properties contained chemical concentrations that exceeded remediation criteria Soil on this property will be removed and backfilled with clean soil

In the early spring and summer of 2014 EPA collected data at the apartment building at 119 Store Avenue to determine whether any chemical vapors have made their way into living spaces at levels that could affect residentsrsquo health Samples included soil gas samples from beneath the apartment building foundation and indoor air samples from several ground-floor apartments The data indicate that chemical vapors exceed EPA risk standards thus requiring mitigation This risk has been addressed as described below

Area I As part of the October 2014 PDI 54 soil borings were completed in Area I (the Eastgate Mall) and 168 soil samples were collected The sample results indicate that soil below much of the paved parking lot exceeds direct contact threat cleanup standards and requires excavation and removal from the Area Data also indicate that soils did not exceed pollutant mobility cleanup levels (designed to protect groundwater) and soils below four feet can be left in place

Area J Area J is the undeveloped area at the northern limit of the Site referred to as the Calabrese parcel The PDI in this area was conducted in late summer 2015 In addition to a wetlands delineation 61 soil borings were completed and 161 soil samples were collected PDI results confirm that a portion of soils in Area J above direct contact threat cleanup levels will require excavation and consolidation under a protective soil cover and another portion of soils above pollutant mobility cleanup levels (designed to protect groundwater) will require excavation and off-site disposal

Remedial Activities Completed Based on the 2014 soil gas and indoor air data on December 17 2014 EPA concluded that indoor air risk exceeded risk standards and authorized an EPA removal action to be taken to address the risk On January 6 2015 EPA invited the owner of 119 Store Avenue to address the vapor risk by installing an active vapor mitigation system which the owner elected to do In February 2015 EPA and CT DEEP inspected the system and determined that it was properly installed and operating CT DEEP will oversee the property ownerrsquos on-going system operations and maintenance

S U P E R F U N D | H A Z A R D O U S W A S T E P R O G R A M A T E P A N E W E N G L A N D S I T E U P D A T E

Cleanup Planning In July 2015 EPA initiated the Remedial Design (RD) process for the Site The primary cleanup objective of the RD is to prevent human contact with contaminated soil at the Site Combined data from the RI and more recent PDI is being used to properly design a plan for completing all portions of the selected remedy under the ROD The RD is on-going and EPA anticipates design completion in September 2016

Information gathered during the PDI has also informed EPArsquos decision to propose a change to the remedy as originally specified in the ROD In August 2016 EPA plans to issue a proposed Explanation of Significant Differences (ESD) and solicit public input during a 30-day comment period On August 18 EPA will hold an informational meeting about the Site and its proposed ESD followed by a hearing for the public to state comments into the record Under the ESD EPA proposes to consolidate contaminated soils above direct contact threat cleanup levels from Areas E1 F and I with similarly contaminated soils on Area J and place the soils under the protective soil cap already planned for Area J More information about the ESD and how to comment can be found below

C O M P O N E N T S O F T H E R D F O R T H E D I F F E R E N T A R E A S O F T H E S I T E I N C L U D E bull Areas D1 E1 and F - Small targeted excavations to depths

of between 4 and 10 feet below grade and off-site disposal (Some contaminated soils above direct contact threat cleanup levels will be consolidated under the soil cap on Area J if EPA finalizes the ESD) Excavations will be backfilled with clean soils and restored to match current conditions

bull Area I (Eastgate Plaza) - Large excavations to a depth of 4 feet below grade and off-site disposal (Contaminated soils above direct contact threat cleanup standards will be consolidated under the soil cap on Area J if EPA finalizes the ESD A small portion of soils that are above both direct contact threat and pollutant mobility cleanup standards will be disposed of off-site) Excavations will be backfilled with soil meeting cleanup goals and imported clean soils Disturbed areas will be restored to match current conditions (pavement and turf areas)

o Excavation work in the plaza will be performed in a phased manner so-as not to disrupt regular business operations The plaza will remain open for the duration of the work

Area J ndash Excavation to a depth of 6 to 10 feet below grade Contaminated soils that exceed direct contact threat cleanup standards will be consolidated under a two-foot soil cap system Other contaminated soils that exceed pollutant mobility cleanup standards (designed to protect groundwater) will be disposed of off-site The excavations will be backfilled with soil meeting cleanup criteria and or imported clean soils Construction of fencing will be completed to limit access The cap will be designed to minimize harm to wetlands and any unavoidable impacts to wetlands will be mitigated

EPA in consultation with CT DEEP and the City of Waterbury is evaluating several potential approaches for establishing institutional controls (deed restrictions municipal ordinance or other measures to limit land use) to prevent contact with contaminated soil remaining in-place

Completing the Cleanup The timeframe for start and completion of the remedial action has not been confirmed at this time First in November 2016 EPA New England-Region I will apply to EPArsquos national Priority Panel for Site funding The Priority Panel will evaluate and rank the priority of the Site in comparison to the other sites that also need funding Once funding is received remedial activities may take one to two years to complete Implementation of institutional controls could take longer

What to Expect The anticipated remedial action will be performed in stages in which the small targeted excavation in Areas D1 E1 and F and the larger excavation in Area I would be performed concurrently These excavations will occupy portions of the paved and unpaved portions of Areas D1 E1 F and I Excavated soil will be temporarily staged and covered to prevent exposure near any excavation location and loaded into dump trucks for transport to an off-site disposal facility (and to Area J if the ESD is finalized) The active work areas will be secured with barriers to prevent injuryproperty damage The excavations

S U P E R F U N D | H A Z A R D O U S W A S T E P R O G R A M A T E P A N E W E N G L A N D S I T E U P D A T E

and restorations in Area I will be performed in several phases to limit the impact to the parking lot area The shopping plaza will remain operational at all times Excavations will be backfilled with soil meeting the cleanup criteria andor imported clean soils graded and compacted Replacement of storm water drainage piping and structures and other utilities located within the limits of excavation in Area I will be performed during excavation and backfilling activities Additionally impacted areas of the Site will be restored to match pre-excavation surface conditions treatments (paved and vegetated)

As with many construction activities these cleanup activities may be noisy at times as heavy construction equipment will be required Typical work hours will be 7 am to 6 pm Monday through Friday The remedial action will be carried-out in conformance with EPA-approved Health and Safety Plans and by workers who are specially trained to perform work in contaminated areas Property owners and residents will be notified in advance of construction activities within and adjacent to excavation areas

Additional truck traffic is expected throughout the RA as trucks will be entering and leaving the Site area delivering materials and clean backfill transporting contaminated soil to an off-site disposal facility (and to the consolidationsoil cap area in Area J if the ESD is issued) As needed construction signage traffic control devices and police details will be utilized during the RA to minimize impacts to local traffic

Lastly EPA has designed an extensive dust-suppression and management approach to minimize the generation andor migration of dust from the work area Dust will be continuously monitored 24-hours a day 7 days a week The RA Contractor will be required to have a dust suppression vehicle at the Site for the duration of the RA

Other Activities

Public Comment Period for Explanation of Significant Differences for Consolidating Excavated Soil under Cap EPA plans to issue a proposed Explanation of Significant Differences (ESD) and solicit public input during a 30-day comment period Under the ESD EPA proposes to consolidate contaminated soils above direct contact threat cleanup levels

from Areas E1 F and I with similarly contaminated soils on Area J and place the soils under the protective soil cap already planned for Area J Under this ESD the footprint of the cap in Area J will not increase but the height of the cap will increase from about two feet above grade to about ten feet above grade

On August 18 2016 at 630 pm at the Waterbury ARC EPA will hold an informational meeting about the Site and its proposed ESD followed by a hearing for the public to state comments into the record People may also provide written comments by mail and email to Almerinda Silva whose contact information is included below More information about the public meeting and hearing is below EPA will respond to comments in a responsiveness summary

For more information about the Site including a copy of the proposed ESD please visit EPArsquos website at wwwepagovsuperfundscovill

If you want a paper copy of the proposed ESD or other Site information please contact Ms Silva or Ms Melanson

W E T L A N D S

A portion of the Site contains wetlands Section 404 of the Clean Water Act and Executive Order 11990 (Protection of Wetlands) requires a determination that federal actions involving dredging and filling activities or activities in wetlands minimize the destruction loss or degradation of wetlands and preserve and enhance the natural and beneficial values of wetlands EPA has determined that soil excavation and filling is required in approximately 6000 square feet of the wetlands located northwest of the intersection of Store and Radcliffe Avenues (on the Calabrese parcelArea J) EPA has determined that there is no practical alternative to conducting work in these wetlands EPA will use best management practices to minimize adverse impacts on the wetlands wildlife and its habitat through erosion control measures and proper regrading and revegetation of the impacted area with indigenous species Wetlands will be restored or replicated consistent with the requirements of wetlands protection laws

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FIGURE 5

AREA J CROSS SECTIONS SCOVILL INDUSTRIAL LANDFILL SUPERFUND SITE

Nobis Engineering Inc STORE AVENUE 18 Chenell Drive WATERBURY CONNECTICUT

Concord NH 03301 T(603) 224-4182 DRAWN BY SM CHECKED BY DMwwwnobisengcom

Client - Focused Employee - Owned PROJECT NO 80109 DATE JULY 2016

Wall

Overhang

Overhang

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Red Paint M

arks (Electric)

Orange Paint M

arks (Telephone)

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Blue Paint Marks (Water)

Green Paint Marks (Sewer)

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Red P

aint M

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EXISTING BUILDING

18 Popular 20 Popular 16 Popular

EXISTING WETLANDS TO REMAIN (APPROX 107440 SF)

EXISTING WETLANDS TO BE REMOVED (APPROX 6370 SF)

PROPOSED WETLANDS TO BE MITIGATED (APPROX 11360 SF)

PRELIMINARY LIMIT OF PROPOSED SOIL CAP

RISK AREA BOUNDARY

00 150 300

GRAPHIC SCALE EXISTING BUILDING

FIGURE 6

SITE RESTORATION SCOVILL INDUSTRIAL LANDFILL SUPERFUND SITE

STORE AVENUENobis Engineering Inc 18 Chenell Drive

Concord NH 03301 WATERBURY CONNECTICUT

T(603) 224-4182 DRAWN BY SM CHECKED BY DMwwwnobisengcom Client - Focused Employee - Owned PROJECT NO 80109 DATE JULY 2016

  1. barcode 591225
  2. barcodetext SEMS Doc ID 591225
Page 2: Scovill Industrial Landill Waterbury, CTWaterbury, CT SITE DESCRIPTION: The Site, encompassing about 25-acres, is bounded to the north by residential properties along Newbury Street

S U P E R F U N D | H A Z A R D O U S W A S T E P R O G R A M A T E P A N E W E N G L A N D S I T E U P D A T E

The EPA and its contractors conducted investigations to support potential waste-removal efforts and evaluation of Site conditions On July 27 2000 EPA listed the Site on the National Priorities List (NPL) EPA conducted Phase I of the Remedial Investigation (RI) in the fall of 2002

In 2004 EPA issued an Administrative Order to the Potentially Responsible Party (PRP) Saltire Inc (the corporate successor to Scovill Manufacturing Company) to complete the remaining RI activities The PRPrsquos contractor conducted approximately 90 percent of the Phase II RI in 2004 but ceased all work after Saltire filed for bankruptcy in July 2004 EPA acquired the existing data for evaluation and conducted the Phase III RI between 2008 and 2011

In September 2013 EPA issued a Record of Decision (ROD) in which EPA specified a remedy to address current and future risk to human health at the Site based on direct contact with contaminants in soil and vapor intrusion from contamination beneath the apartment building located at 119 Store Avenue in Area E1

R E C E N T I N V E S T I G AT I O N S Between August 2014 and September 2015 EPA performed a pre-design investigation (PDI) in risk management areas E1 I and J The PDI involved sampling a number of parcels to further define the extent of contamination The findings of this PDI are outlined in pertinent part below

Area E1 Area E1 includes the property at 119 Store Avenue plus four abutting residential properties along Monroe Avenue Historical aerial photos indicated a possibility that fill from the Site may have been placed in the backyards of these four residential properties In August 2014 EPA collected soil samples from each of these properties to test whether chemicals in the soil exceeded remediation criteria The results of these tests indicate that soil in only one of the four properties contained chemical concentrations that exceeded remediation criteria Soil on this property will be removed and backfilled with clean soil

In the early spring and summer of 2014 EPA collected data at the apartment building at 119 Store Avenue to determine whether any chemical vapors have made their way into living spaces at levels that could affect residentsrsquo health Samples included soil gas samples from beneath the apartment building foundation and indoor air samples from several ground-floor apartments The data indicate that chemical vapors exceed EPA risk standards thus requiring mitigation This risk has been addressed as described below

Area I As part of the October 2014 PDI 54 soil borings were completed in Area I (the Eastgate Mall) and 168 soil samples were collected The sample results indicate that soil below much of the paved parking lot exceeds direct contact threat cleanup standards and requires excavation and removal from the Area Data also indicate that soils did not exceed pollutant mobility cleanup levels (designed to protect groundwater) and soils below four feet can be left in place

Area J Area J is the undeveloped area at the northern limit of the Site referred to as the Calabrese parcel The PDI in this area was conducted in late summer 2015 In addition to a wetlands delineation 61 soil borings were completed and 161 soil samples were collected PDI results confirm that a portion of soils in Area J above direct contact threat cleanup levels will require excavation and consolidation under a protective soil cover and another portion of soils above pollutant mobility cleanup levels (designed to protect groundwater) will require excavation and off-site disposal

Remedial Activities Completed Based on the 2014 soil gas and indoor air data on December 17 2014 EPA concluded that indoor air risk exceeded risk standards and authorized an EPA removal action to be taken to address the risk On January 6 2015 EPA invited the owner of 119 Store Avenue to address the vapor risk by installing an active vapor mitigation system which the owner elected to do In February 2015 EPA and CT DEEP inspected the system and determined that it was properly installed and operating CT DEEP will oversee the property ownerrsquos on-going system operations and maintenance

S U P E R F U N D | H A Z A R D O U S W A S T E P R O G R A M A T E P A N E W E N G L A N D S I T E U P D A T E

Cleanup Planning In July 2015 EPA initiated the Remedial Design (RD) process for the Site The primary cleanup objective of the RD is to prevent human contact with contaminated soil at the Site Combined data from the RI and more recent PDI is being used to properly design a plan for completing all portions of the selected remedy under the ROD The RD is on-going and EPA anticipates design completion in September 2016

Information gathered during the PDI has also informed EPArsquos decision to propose a change to the remedy as originally specified in the ROD In August 2016 EPA plans to issue a proposed Explanation of Significant Differences (ESD) and solicit public input during a 30-day comment period On August 18 EPA will hold an informational meeting about the Site and its proposed ESD followed by a hearing for the public to state comments into the record Under the ESD EPA proposes to consolidate contaminated soils above direct contact threat cleanup levels from Areas E1 F and I with similarly contaminated soils on Area J and place the soils under the protective soil cap already planned for Area J More information about the ESD and how to comment can be found below

C O M P O N E N T S O F T H E R D F O R T H E D I F F E R E N T A R E A S O F T H E S I T E I N C L U D E bull Areas D1 E1 and F - Small targeted excavations to depths

of between 4 and 10 feet below grade and off-site disposal (Some contaminated soils above direct contact threat cleanup levels will be consolidated under the soil cap on Area J if EPA finalizes the ESD) Excavations will be backfilled with clean soils and restored to match current conditions

bull Area I (Eastgate Plaza) - Large excavations to a depth of 4 feet below grade and off-site disposal (Contaminated soils above direct contact threat cleanup standards will be consolidated under the soil cap on Area J if EPA finalizes the ESD A small portion of soils that are above both direct contact threat and pollutant mobility cleanup standards will be disposed of off-site) Excavations will be backfilled with soil meeting cleanup goals and imported clean soils Disturbed areas will be restored to match current conditions (pavement and turf areas)

o Excavation work in the plaza will be performed in a phased manner so-as not to disrupt regular business operations The plaza will remain open for the duration of the work

Area J ndash Excavation to a depth of 6 to 10 feet below grade Contaminated soils that exceed direct contact threat cleanup standards will be consolidated under a two-foot soil cap system Other contaminated soils that exceed pollutant mobility cleanup standards (designed to protect groundwater) will be disposed of off-site The excavations will be backfilled with soil meeting cleanup criteria and or imported clean soils Construction of fencing will be completed to limit access The cap will be designed to minimize harm to wetlands and any unavoidable impacts to wetlands will be mitigated

EPA in consultation with CT DEEP and the City of Waterbury is evaluating several potential approaches for establishing institutional controls (deed restrictions municipal ordinance or other measures to limit land use) to prevent contact with contaminated soil remaining in-place

Completing the Cleanup The timeframe for start and completion of the remedial action has not been confirmed at this time First in November 2016 EPA New England-Region I will apply to EPArsquos national Priority Panel for Site funding The Priority Panel will evaluate and rank the priority of the Site in comparison to the other sites that also need funding Once funding is received remedial activities may take one to two years to complete Implementation of institutional controls could take longer

What to Expect The anticipated remedial action will be performed in stages in which the small targeted excavation in Areas D1 E1 and F and the larger excavation in Area I would be performed concurrently These excavations will occupy portions of the paved and unpaved portions of Areas D1 E1 F and I Excavated soil will be temporarily staged and covered to prevent exposure near any excavation location and loaded into dump trucks for transport to an off-site disposal facility (and to Area J if the ESD is finalized) The active work areas will be secured with barriers to prevent injuryproperty damage The excavations

S U P E R F U N D | H A Z A R D O U S W A S T E P R O G R A M A T E P A N E W E N G L A N D S I T E U P D A T E

and restorations in Area I will be performed in several phases to limit the impact to the parking lot area The shopping plaza will remain operational at all times Excavations will be backfilled with soil meeting the cleanup criteria andor imported clean soils graded and compacted Replacement of storm water drainage piping and structures and other utilities located within the limits of excavation in Area I will be performed during excavation and backfilling activities Additionally impacted areas of the Site will be restored to match pre-excavation surface conditions treatments (paved and vegetated)

As with many construction activities these cleanup activities may be noisy at times as heavy construction equipment will be required Typical work hours will be 7 am to 6 pm Monday through Friday The remedial action will be carried-out in conformance with EPA-approved Health and Safety Plans and by workers who are specially trained to perform work in contaminated areas Property owners and residents will be notified in advance of construction activities within and adjacent to excavation areas

Additional truck traffic is expected throughout the RA as trucks will be entering and leaving the Site area delivering materials and clean backfill transporting contaminated soil to an off-site disposal facility (and to the consolidationsoil cap area in Area J if the ESD is issued) As needed construction signage traffic control devices and police details will be utilized during the RA to minimize impacts to local traffic

Lastly EPA has designed an extensive dust-suppression and management approach to minimize the generation andor migration of dust from the work area Dust will be continuously monitored 24-hours a day 7 days a week The RA Contractor will be required to have a dust suppression vehicle at the Site for the duration of the RA

Other Activities

Public Comment Period for Explanation of Significant Differences for Consolidating Excavated Soil under Cap EPA plans to issue a proposed Explanation of Significant Differences (ESD) and solicit public input during a 30-day comment period Under the ESD EPA proposes to consolidate contaminated soils above direct contact threat cleanup levels

from Areas E1 F and I with similarly contaminated soils on Area J and place the soils under the protective soil cap already planned for Area J Under this ESD the footprint of the cap in Area J will not increase but the height of the cap will increase from about two feet above grade to about ten feet above grade

On August 18 2016 at 630 pm at the Waterbury ARC EPA will hold an informational meeting about the Site and its proposed ESD followed by a hearing for the public to state comments into the record People may also provide written comments by mail and email to Almerinda Silva whose contact information is included below More information about the public meeting and hearing is below EPA will respond to comments in a responsiveness summary

For more information about the Site including a copy of the proposed ESD please visit EPArsquos website at wwwepagovsuperfundscovill

If you want a paper copy of the proposed ESD or other Site information please contact Ms Silva or Ms Melanson

W E T L A N D S

A portion of the Site contains wetlands Section 404 of the Clean Water Act and Executive Order 11990 (Protection of Wetlands) requires a determination that federal actions involving dredging and filling activities or activities in wetlands minimize the destruction loss or degradation of wetlands and preserve and enhance the natural and beneficial values of wetlands EPA has determined that soil excavation and filling is required in approximately 6000 square feet of the wetlands located northwest of the intersection of Store and Radcliffe Avenues (on the Calabrese parcelArea J) EPA has determined that there is no practical alternative to conducting work in these wetlands EPA will use best management practices to minimize adverse impacts on the wetlands wildlife and its habitat through erosion control measures and proper regrading and revegetation of the impacted area with indigenous species Wetlands will be restored or replicated consistent with the requirements of wetlands protection laws

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gitir-----Noiiiteidegsmiddot------lshy U-------r -ii-r---7FIKGlUjjR~E~1--1 N 1Locaijooofsitefeatures d epctedheroonlsapproltlmate SITE PLAN amp PRELIMINARY ~~ 11 andgivenforil-strativepurposesonty IE ~

~ e= REMEDIAL ACTION AREAS ~ o 625 125 250 Tl~ SCOVILL INDUSTRIAL LANDFILL gt ~ MA 01111 WATERBURY CONNECTICUT

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445

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430

425

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445

440

435

430

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FIGURE 5

AREA J CROSS SECTIONS SCOVILL INDUSTRIAL LANDFILL SUPERFUND SITE

Nobis Engineering Inc STORE AVENUE 18 Chenell Drive WATERBURY CONNECTICUT

Concord NH 03301 T(603) 224-4182 DRAWN BY SM CHECKED BY DMwwwnobisengcom

Client - Focused Employee - Owned PROJECT NO 80109 DATE JULY 2016

Wall

Overhang

Overhang

Overhang

Red Paint M

arks (Electric)

Orange Paint M

arks (Telephone)

Blue

Paint Marks

Yellow Paint Marks

Blue Paint Marks (Water)

Green Paint Marks (Sewer)

Yellow Paint Marks (Gas)

Red P

aint M

arks (

Electric

)

Orange

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t Mark

s (Tele

phon

e)

Red Paint Marks (Electric)Orange Paint Marks (Telephone)

Concre

te Pa

d44

50

EXISTING BUILDING

EXISTING BUILDING

EXISTING

EXISTINGBUILDING

X X X

EXISTING

BUILD

ING

EXISTIN

G BU

ILDIN

G

X

SNET

8933

Wall

Wall

EXISTING BUILDING

LEGEND

EXISTING BUILDING

18 Popular 20 Popular 16 Popular

EXISTING WETLANDS TO REMAIN (APPROX 107440 SF)

EXISTING WETLANDS TO BE REMOVED (APPROX 6370 SF)

PROPOSED WETLANDS TO BE MITIGATED (APPROX 11360 SF)

PRELIMINARY LIMIT OF PROPOSED SOIL CAP

RISK AREA BOUNDARY

00 150 300

GRAPHIC SCALE EXISTING BUILDING

FIGURE 6

SITE RESTORATION SCOVILL INDUSTRIAL LANDFILL SUPERFUND SITE

STORE AVENUENobis Engineering Inc 18 Chenell Drive

Concord NH 03301 WATERBURY CONNECTICUT

T(603) 224-4182 DRAWN BY SM CHECKED BY DMwwwnobisengcom Client - Focused Employee - Owned PROJECT NO 80109 DATE JULY 2016

  1. barcode 591225
  2. barcodetext SEMS Doc ID 591225
Page 3: Scovill Industrial Landill Waterbury, CTWaterbury, CT SITE DESCRIPTION: The Site, encompassing about 25-acres, is bounded to the north by residential properties along Newbury Street

S U P E R F U N D | H A Z A R D O U S W A S T E P R O G R A M A T E P A N E W E N G L A N D S I T E U P D A T E

Cleanup Planning In July 2015 EPA initiated the Remedial Design (RD) process for the Site The primary cleanup objective of the RD is to prevent human contact with contaminated soil at the Site Combined data from the RI and more recent PDI is being used to properly design a plan for completing all portions of the selected remedy under the ROD The RD is on-going and EPA anticipates design completion in September 2016

Information gathered during the PDI has also informed EPArsquos decision to propose a change to the remedy as originally specified in the ROD In August 2016 EPA plans to issue a proposed Explanation of Significant Differences (ESD) and solicit public input during a 30-day comment period On August 18 EPA will hold an informational meeting about the Site and its proposed ESD followed by a hearing for the public to state comments into the record Under the ESD EPA proposes to consolidate contaminated soils above direct contact threat cleanup levels from Areas E1 F and I with similarly contaminated soils on Area J and place the soils under the protective soil cap already planned for Area J More information about the ESD and how to comment can be found below

C O M P O N E N T S O F T H E R D F O R T H E D I F F E R E N T A R E A S O F T H E S I T E I N C L U D E bull Areas D1 E1 and F - Small targeted excavations to depths

of between 4 and 10 feet below grade and off-site disposal (Some contaminated soils above direct contact threat cleanup levels will be consolidated under the soil cap on Area J if EPA finalizes the ESD) Excavations will be backfilled with clean soils and restored to match current conditions

bull Area I (Eastgate Plaza) - Large excavations to a depth of 4 feet below grade and off-site disposal (Contaminated soils above direct contact threat cleanup standards will be consolidated under the soil cap on Area J if EPA finalizes the ESD A small portion of soils that are above both direct contact threat and pollutant mobility cleanup standards will be disposed of off-site) Excavations will be backfilled with soil meeting cleanup goals and imported clean soils Disturbed areas will be restored to match current conditions (pavement and turf areas)

o Excavation work in the plaza will be performed in a phased manner so-as not to disrupt regular business operations The plaza will remain open for the duration of the work

Area J ndash Excavation to a depth of 6 to 10 feet below grade Contaminated soils that exceed direct contact threat cleanup standards will be consolidated under a two-foot soil cap system Other contaminated soils that exceed pollutant mobility cleanup standards (designed to protect groundwater) will be disposed of off-site The excavations will be backfilled with soil meeting cleanup criteria and or imported clean soils Construction of fencing will be completed to limit access The cap will be designed to minimize harm to wetlands and any unavoidable impacts to wetlands will be mitigated

EPA in consultation with CT DEEP and the City of Waterbury is evaluating several potential approaches for establishing institutional controls (deed restrictions municipal ordinance or other measures to limit land use) to prevent contact with contaminated soil remaining in-place

Completing the Cleanup The timeframe for start and completion of the remedial action has not been confirmed at this time First in November 2016 EPA New England-Region I will apply to EPArsquos national Priority Panel for Site funding The Priority Panel will evaluate and rank the priority of the Site in comparison to the other sites that also need funding Once funding is received remedial activities may take one to two years to complete Implementation of institutional controls could take longer

What to Expect The anticipated remedial action will be performed in stages in which the small targeted excavation in Areas D1 E1 and F and the larger excavation in Area I would be performed concurrently These excavations will occupy portions of the paved and unpaved portions of Areas D1 E1 F and I Excavated soil will be temporarily staged and covered to prevent exposure near any excavation location and loaded into dump trucks for transport to an off-site disposal facility (and to Area J if the ESD is finalized) The active work areas will be secured with barriers to prevent injuryproperty damage The excavations

S U P E R F U N D | H A Z A R D O U S W A S T E P R O G R A M A T E P A N E W E N G L A N D S I T E U P D A T E

and restorations in Area I will be performed in several phases to limit the impact to the parking lot area The shopping plaza will remain operational at all times Excavations will be backfilled with soil meeting the cleanup criteria andor imported clean soils graded and compacted Replacement of storm water drainage piping and structures and other utilities located within the limits of excavation in Area I will be performed during excavation and backfilling activities Additionally impacted areas of the Site will be restored to match pre-excavation surface conditions treatments (paved and vegetated)

As with many construction activities these cleanup activities may be noisy at times as heavy construction equipment will be required Typical work hours will be 7 am to 6 pm Monday through Friday The remedial action will be carried-out in conformance with EPA-approved Health and Safety Plans and by workers who are specially trained to perform work in contaminated areas Property owners and residents will be notified in advance of construction activities within and adjacent to excavation areas

Additional truck traffic is expected throughout the RA as trucks will be entering and leaving the Site area delivering materials and clean backfill transporting contaminated soil to an off-site disposal facility (and to the consolidationsoil cap area in Area J if the ESD is issued) As needed construction signage traffic control devices and police details will be utilized during the RA to minimize impacts to local traffic

Lastly EPA has designed an extensive dust-suppression and management approach to minimize the generation andor migration of dust from the work area Dust will be continuously monitored 24-hours a day 7 days a week The RA Contractor will be required to have a dust suppression vehicle at the Site for the duration of the RA

Other Activities

Public Comment Period for Explanation of Significant Differences for Consolidating Excavated Soil under Cap EPA plans to issue a proposed Explanation of Significant Differences (ESD) and solicit public input during a 30-day comment period Under the ESD EPA proposes to consolidate contaminated soils above direct contact threat cleanup levels

from Areas E1 F and I with similarly contaminated soils on Area J and place the soils under the protective soil cap already planned for Area J Under this ESD the footprint of the cap in Area J will not increase but the height of the cap will increase from about two feet above grade to about ten feet above grade

On August 18 2016 at 630 pm at the Waterbury ARC EPA will hold an informational meeting about the Site and its proposed ESD followed by a hearing for the public to state comments into the record People may also provide written comments by mail and email to Almerinda Silva whose contact information is included below More information about the public meeting and hearing is below EPA will respond to comments in a responsiveness summary

For more information about the Site including a copy of the proposed ESD please visit EPArsquos website at wwwepagovsuperfundscovill

If you want a paper copy of the proposed ESD or other Site information please contact Ms Silva or Ms Melanson

W E T L A N D S

A portion of the Site contains wetlands Section 404 of the Clean Water Act and Executive Order 11990 (Protection of Wetlands) requires a determination that federal actions involving dredging and filling activities or activities in wetlands minimize the destruction loss or degradation of wetlands and preserve and enhance the natural and beneficial values of wetlands EPA has determined that soil excavation and filling is required in approximately 6000 square feet of the wetlands located northwest of the intersection of Store and Radcliffe Avenues (on the Calabrese parcelArea J) EPA has determined that there is no practical alternative to conducting work in these wetlands EPA will use best management practices to minimize adverse impacts on the wetlands wildlife and its habitat through erosion control measures and proper regrading and revegetation of the impacted area with indigenous species Wetlands will be restored or replicated consistent with the requirements of wetlands protection laws

g c 0

0

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0 D

0

0 osOAlEAVE

D t

0 0

0 0 0 0

D Q

0 0 0 0 Q Q D 0 0 D 0 0 [J u a a 0 0 0

Q

J__________

i Legend

II Soil Samp~ Exceeding ~ ROD cieanvp leveb

i - ~i~~~~~middotng ~ -- Estimated Limit of Scovill ffi ~ Oetlv edfPfaeed Fi l

C_J Property uage Arbullbullbullmiddot LJStruCWres

Tagtc A$$essors Parcel Boundariff

Remedial Action - Excavate

L to~1~sp~~~~~~g~ -- shy Remedial Action - Excavate with

Off-Site DispcnaJ Soil ICs

- Rbullmedlal Action middot Soll ICbull OnlyI Remedial Action Targeted rpound -=] Exeavatgton with OffSite

0 Cnsposal so11c er Remedial Action bull Vapor Intrusion

j D ~~~1do7~i~~s vapor Intrusion IC

bullbullbullbullbullbull

0

0 o oJ0 D0 0 0 00 D

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0 0 OD D D

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bull t bullbull bull

bull Ill 0

bull bull

119 Store Av~

()

gitir-----Noiiiteidegsmiddot------lshy U-------r -ii-r---7FIKGlUjjR~E~1--1 N 1Locaijooofsitefeatures d epctedheroonlsapproltlmate SITE PLAN amp PRELIMINARY ~~ 11 andgivenforil-strativepurposesonty IE ~

~ e= REMEDIAL ACTION AREAS ~ o 625 125 250 Tl~ SCOVILL INDUSTRIAL LANDFILL gt ~ MA 01111 WATERBURY CONNECTICUT

0

ici lit1t1_ c Feet - AilllNAiM PREPARED BY OM

~L---------------------Lllllftl- - - middotfM PR~O~Jl~C_TN0_ 0~1j~OQATllEaiiFE~B~RU~A~RlYfl20~1J= ~==Ul=~Alfl_L 8~01lliOi9 ~ 16

ELE

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N (F

T)

450

445

440

435

430

425

450

ELE

VA

TIO

N (F

T)

445

440

435

430

425

FIGURE 5

AREA J CROSS SECTIONS SCOVILL INDUSTRIAL LANDFILL SUPERFUND SITE

Nobis Engineering Inc STORE AVENUE 18 Chenell Drive WATERBURY CONNECTICUT

Concord NH 03301 T(603) 224-4182 DRAWN BY SM CHECKED BY DMwwwnobisengcom

Client - Focused Employee - Owned PROJECT NO 80109 DATE JULY 2016

Wall

Overhang

Overhang

Overhang

Red Paint M

arks (Electric)

Orange Paint M

arks (Telephone)

Blue

Paint Marks

Yellow Paint Marks

Blue Paint Marks (Water)

Green Paint Marks (Sewer)

Yellow Paint Marks (Gas)

Red P

aint M

arks (

Electric

)

Orange

Pain

t Mark

s (Tele

phon

e)

Red Paint Marks (Electric)Orange Paint Marks (Telephone)

Concre

te Pa

d44

50

EXISTING BUILDING

EXISTING BUILDING

EXISTING

EXISTINGBUILDING

X X X

EXISTING

BUILD

ING

EXISTIN

G BU

ILDIN

G

X

SNET

8933

Wall

Wall

EXISTING BUILDING

LEGEND

EXISTING BUILDING

18 Popular 20 Popular 16 Popular

EXISTING WETLANDS TO REMAIN (APPROX 107440 SF)

EXISTING WETLANDS TO BE REMOVED (APPROX 6370 SF)

PROPOSED WETLANDS TO BE MITIGATED (APPROX 11360 SF)

PRELIMINARY LIMIT OF PROPOSED SOIL CAP

RISK AREA BOUNDARY

00 150 300

GRAPHIC SCALE EXISTING BUILDING

FIGURE 6

SITE RESTORATION SCOVILL INDUSTRIAL LANDFILL SUPERFUND SITE

STORE AVENUENobis Engineering Inc 18 Chenell Drive

Concord NH 03301 WATERBURY CONNECTICUT

T(603) 224-4182 DRAWN BY SM CHECKED BY DMwwwnobisengcom Client - Focused Employee - Owned PROJECT NO 80109 DATE JULY 2016

  1. barcode 591225
  2. barcodetext SEMS Doc ID 591225
Page 4: Scovill Industrial Landill Waterbury, CTWaterbury, CT SITE DESCRIPTION: The Site, encompassing about 25-acres, is bounded to the north by residential properties along Newbury Street

S U P E R F U N D | H A Z A R D O U S W A S T E P R O G R A M A T E P A N E W E N G L A N D S I T E U P D A T E

and restorations in Area I will be performed in several phases to limit the impact to the parking lot area The shopping plaza will remain operational at all times Excavations will be backfilled with soil meeting the cleanup criteria andor imported clean soils graded and compacted Replacement of storm water drainage piping and structures and other utilities located within the limits of excavation in Area I will be performed during excavation and backfilling activities Additionally impacted areas of the Site will be restored to match pre-excavation surface conditions treatments (paved and vegetated)

As with many construction activities these cleanup activities may be noisy at times as heavy construction equipment will be required Typical work hours will be 7 am to 6 pm Monday through Friday The remedial action will be carried-out in conformance with EPA-approved Health and Safety Plans and by workers who are specially trained to perform work in contaminated areas Property owners and residents will be notified in advance of construction activities within and adjacent to excavation areas

Additional truck traffic is expected throughout the RA as trucks will be entering and leaving the Site area delivering materials and clean backfill transporting contaminated soil to an off-site disposal facility (and to the consolidationsoil cap area in Area J if the ESD is issued) As needed construction signage traffic control devices and police details will be utilized during the RA to minimize impacts to local traffic

Lastly EPA has designed an extensive dust-suppression and management approach to minimize the generation andor migration of dust from the work area Dust will be continuously monitored 24-hours a day 7 days a week The RA Contractor will be required to have a dust suppression vehicle at the Site for the duration of the RA

Other Activities

Public Comment Period for Explanation of Significant Differences for Consolidating Excavated Soil under Cap EPA plans to issue a proposed Explanation of Significant Differences (ESD) and solicit public input during a 30-day comment period Under the ESD EPA proposes to consolidate contaminated soils above direct contact threat cleanup levels

from Areas E1 F and I with similarly contaminated soils on Area J and place the soils under the protective soil cap already planned for Area J Under this ESD the footprint of the cap in Area J will not increase but the height of the cap will increase from about two feet above grade to about ten feet above grade

On August 18 2016 at 630 pm at the Waterbury ARC EPA will hold an informational meeting about the Site and its proposed ESD followed by a hearing for the public to state comments into the record People may also provide written comments by mail and email to Almerinda Silva whose contact information is included below More information about the public meeting and hearing is below EPA will respond to comments in a responsiveness summary

For more information about the Site including a copy of the proposed ESD please visit EPArsquos website at wwwepagovsuperfundscovill

If you want a paper copy of the proposed ESD or other Site information please contact Ms Silva or Ms Melanson

W E T L A N D S

A portion of the Site contains wetlands Section 404 of the Clean Water Act and Executive Order 11990 (Protection of Wetlands) requires a determination that federal actions involving dredging and filling activities or activities in wetlands minimize the destruction loss or degradation of wetlands and preserve and enhance the natural and beneficial values of wetlands EPA has determined that soil excavation and filling is required in approximately 6000 square feet of the wetlands located northwest of the intersection of Store and Radcliffe Avenues (on the Calabrese parcelArea J) EPA has determined that there is no practical alternative to conducting work in these wetlands EPA will use best management practices to minimize adverse impacts on the wetlands wildlife and its habitat through erosion control measures and proper regrading and revegetation of the impacted area with indigenous species Wetlands will be restored or replicated consistent with the requirements of wetlands protection laws

g c 0

0

OAlTONAVE

0 D

0

0 osOAlEAVE

D t

0 0

0 0 0 0

D Q

0 0 0 0 Q Q D 0 0 D 0 0 [J u a a 0 0 0

Q

J__________

i Legend

II Soil Samp~ Exceeding ~ ROD cieanvp leveb

i - ~i~~~~~middotng ~ -- Estimated Limit of Scovill ffi ~ Oetlv edfPfaeed Fi l

C_J Property uage Arbullbullbullmiddot LJStruCWres

Tagtc A$$essors Parcel Boundariff

Remedial Action - Excavate

L to~1~sp~~~~~~g~ -- shy Remedial Action - Excavate with

Off-Site DispcnaJ Soil ICs

- Rbullmedlal Action middot Soll ICbull OnlyI Remedial Action Targeted rpound -=] Exeavatgton with OffSite

0 Cnsposal so11c er Remedial Action bull Vapor Intrusion

j D ~~~1do7~i~~s vapor Intrusion IC

bullbullbullbullbullbull

0

0 o oJ0 D0 0 0 00 D

u OD 0

CJ z

OD G ~

0 0 OD D D

cJcJ 00

II

bull t bullbull bull

bull Ill 0

bull bull

119 Store Av~

()

gitir-----Noiiiteidegsmiddot------lshy U-------r -ii-r---7FIKGlUjjR~E~1--1 N 1Locaijooofsitefeatures d epctedheroonlsapproltlmate SITE PLAN amp PRELIMINARY ~~ 11 andgivenforil-strativepurposesonty IE ~

~ e= REMEDIAL ACTION AREAS ~ o 625 125 250 Tl~ SCOVILL INDUSTRIAL LANDFILL gt ~ MA 01111 WATERBURY CONNECTICUT

0

ici lit1t1_ c Feet - AilllNAiM PREPARED BY OM

~L---------------------Lllllftl- - - middotfM PR~O~Jl~C_TN0_ 0~1j~OQATllEaiiFE~B~RU~A~RlYfl20~1J= ~==Ul=~Alfl_L 8~01lliOi9 ~ 16

ELE

VA

TIO

N (F

T)

450

445

440

435

430

425

450

ELE

VA

TIO

N (F

T)

445

440

435

430

425

FIGURE 5

AREA J CROSS SECTIONS SCOVILL INDUSTRIAL LANDFILL SUPERFUND SITE

Nobis Engineering Inc STORE AVENUE 18 Chenell Drive WATERBURY CONNECTICUT

Concord NH 03301 T(603) 224-4182 DRAWN BY SM CHECKED BY DMwwwnobisengcom

Client - Focused Employee - Owned PROJECT NO 80109 DATE JULY 2016

Wall

Overhang

Overhang

Overhang

Red Paint M

arks (Electric)

Orange Paint M

arks (Telephone)

Blue

Paint Marks

Yellow Paint Marks

Blue Paint Marks (Water)

Green Paint Marks (Sewer)

Yellow Paint Marks (Gas)

Red P

aint M

arks (

Electric

)

Orange

Pain

t Mark

s (Tele

phon

e)

Red Paint Marks (Electric)Orange Paint Marks (Telephone)

Concre

te Pa

d44

50

EXISTING BUILDING

EXISTING BUILDING

EXISTING

EXISTINGBUILDING

X X X

EXISTING

BUILD

ING

EXISTIN

G BU

ILDIN

G

X

SNET

8933

Wall

Wall

EXISTING BUILDING

LEGEND

EXISTING BUILDING

18 Popular 20 Popular 16 Popular

EXISTING WETLANDS TO REMAIN (APPROX 107440 SF)

EXISTING WETLANDS TO BE REMOVED (APPROX 6370 SF)

PROPOSED WETLANDS TO BE MITIGATED (APPROX 11360 SF)

PRELIMINARY LIMIT OF PROPOSED SOIL CAP

RISK AREA BOUNDARY

00 150 300

GRAPHIC SCALE EXISTING BUILDING

FIGURE 6

SITE RESTORATION SCOVILL INDUSTRIAL LANDFILL SUPERFUND SITE

STORE AVENUENobis Engineering Inc 18 Chenell Drive

Concord NH 03301 WATERBURY CONNECTICUT

T(603) 224-4182 DRAWN BY SM CHECKED BY DMwwwnobisengcom Client - Focused Employee - Owned PROJECT NO 80109 DATE JULY 2016

  1. barcode 591225
  2. barcodetext SEMS Doc ID 591225
Page 5: Scovill Industrial Landill Waterbury, CTWaterbury, CT SITE DESCRIPTION: The Site, encompassing about 25-acres, is bounded to the north by residential properties along Newbury Street

g c 0

0

OAlTONAVE

0 D

0

0 osOAlEAVE

D t

0 0

0 0 0 0

D Q

0 0 0 0 Q Q D 0 0 D 0 0 [J u a a 0 0 0

Q

J__________

i Legend

II Soil Samp~ Exceeding ~ ROD cieanvp leveb

i - ~i~~~~~middotng ~ -- Estimated Limit of Scovill ffi ~ Oetlv edfPfaeed Fi l

C_J Property uage Arbullbullbullmiddot LJStruCWres

Tagtc A$$essors Parcel Boundariff

Remedial Action - Excavate

L to~1~sp~~~~~~g~ -- shy Remedial Action - Excavate with

Off-Site DispcnaJ Soil ICs

- Rbullmedlal Action middot Soll ICbull OnlyI Remedial Action Targeted rpound -=] Exeavatgton with OffSite

0 Cnsposal so11c er Remedial Action bull Vapor Intrusion

j D ~~~1do7~i~~s vapor Intrusion IC

bullbullbullbullbullbull

0

0 o oJ0 D0 0 0 00 D

u OD 0

CJ z

OD G ~

0 0 OD D D

cJcJ 00

II

bull t bullbull bull

bull Ill 0

bull bull

119 Store Av~

()

gitir-----Noiiiteidegsmiddot------lshy U-------r -ii-r---7FIKGlUjjR~E~1--1 N 1Locaijooofsitefeatures d epctedheroonlsapproltlmate SITE PLAN amp PRELIMINARY ~~ 11 andgivenforil-strativepurposesonty IE ~

~ e= REMEDIAL ACTION AREAS ~ o 625 125 250 Tl~ SCOVILL INDUSTRIAL LANDFILL gt ~ MA 01111 WATERBURY CONNECTICUT

0

ici lit1t1_ c Feet - AilllNAiM PREPARED BY OM

~L---------------------Lllllftl- - - middotfM PR~O~Jl~C_TN0_ 0~1j~OQATllEaiiFE~B~RU~A~RlYfl20~1J= ~==Ul=~Alfl_L 8~01lliOi9 ~ 16

ELE

VA

TIO

N (F

T)

450

445

440

435

430

425

450

ELE

VA

TIO

N (F

T)

445

440

435

430

425

FIGURE 5

AREA J CROSS SECTIONS SCOVILL INDUSTRIAL LANDFILL SUPERFUND SITE

Nobis Engineering Inc STORE AVENUE 18 Chenell Drive WATERBURY CONNECTICUT

Concord NH 03301 T(603) 224-4182 DRAWN BY SM CHECKED BY DMwwwnobisengcom

Client - Focused Employee - Owned PROJECT NO 80109 DATE JULY 2016

Wall

Overhang

Overhang

Overhang

Red Paint M

arks (Electric)

Orange Paint M

arks (Telephone)

Blue

Paint Marks

Yellow Paint Marks

Blue Paint Marks (Water)

Green Paint Marks (Sewer)

Yellow Paint Marks (Gas)

Red P

aint M

arks (

Electric

)

Orange

Pain

t Mark

s (Tele

phon

e)

Red Paint Marks (Electric)Orange Paint Marks (Telephone)

Concre

te Pa

d44

50

EXISTING BUILDING

EXISTING BUILDING

EXISTING

EXISTINGBUILDING

X X X

EXISTING

BUILD

ING

EXISTIN

G BU

ILDIN

G

X

SNET

8933

Wall

Wall

EXISTING BUILDING

LEGEND

EXISTING BUILDING

18 Popular 20 Popular 16 Popular

EXISTING WETLANDS TO REMAIN (APPROX 107440 SF)

EXISTING WETLANDS TO BE REMOVED (APPROX 6370 SF)

PROPOSED WETLANDS TO BE MITIGATED (APPROX 11360 SF)

PRELIMINARY LIMIT OF PROPOSED SOIL CAP

RISK AREA BOUNDARY

00 150 300

GRAPHIC SCALE EXISTING BUILDING

FIGURE 6

SITE RESTORATION SCOVILL INDUSTRIAL LANDFILL SUPERFUND SITE

STORE AVENUENobis Engineering Inc 18 Chenell Drive

Concord NH 03301 WATERBURY CONNECTICUT

T(603) 224-4182 DRAWN BY SM CHECKED BY DMwwwnobisengcom Client - Focused Employee - Owned PROJECT NO 80109 DATE JULY 2016

  1. barcode 591225
  2. barcodetext SEMS Doc ID 591225
Page 6: Scovill Industrial Landill Waterbury, CTWaterbury, CT SITE DESCRIPTION: The Site, encompassing about 25-acres, is bounded to the north by residential properties along Newbury Street

ELE

VA

TIO

N (F

T)

450

445

440

435

430

425

450

ELE

VA

TIO

N (F

T)

445

440

435

430

425

FIGURE 5

AREA J CROSS SECTIONS SCOVILL INDUSTRIAL LANDFILL SUPERFUND SITE

Nobis Engineering Inc STORE AVENUE 18 Chenell Drive WATERBURY CONNECTICUT

Concord NH 03301 T(603) 224-4182 DRAWN BY SM CHECKED BY DMwwwnobisengcom

Client - Focused Employee - Owned PROJECT NO 80109 DATE JULY 2016

Wall

Overhang

Overhang

Overhang

Red Paint M

arks (Electric)

Orange Paint M

arks (Telephone)

Blue

Paint Marks

Yellow Paint Marks

Blue Paint Marks (Water)

Green Paint Marks (Sewer)

Yellow Paint Marks (Gas)

Red P

aint M

arks (

Electric

)

Orange

Pain

t Mark

s (Tele

phon

e)

Red Paint Marks (Electric)Orange Paint Marks (Telephone)

Concre

te Pa

d44

50

EXISTING BUILDING

EXISTING BUILDING

EXISTING

EXISTINGBUILDING

X X X

EXISTING

BUILD

ING

EXISTIN

G BU

ILDIN

G

X

SNET

8933

Wall

Wall

EXISTING BUILDING

LEGEND

EXISTING BUILDING

18 Popular 20 Popular 16 Popular

EXISTING WETLANDS TO REMAIN (APPROX 107440 SF)

EXISTING WETLANDS TO BE REMOVED (APPROX 6370 SF)

PROPOSED WETLANDS TO BE MITIGATED (APPROX 11360 SF)

PRELIMINARY LIMIT OF PROPOSED SOIL CAP

RISK AREA BOUNDARY

00 150 300

GRAPHIC SCALE EXISTING BUILDING

FIGURE 6

SITE RESTORATION SCOVILL INDUSTRIAL LANDFILL SUPERFUND SITE

STORE AVENUENobis Engineering Inc 18 Chenell Drive

Concord NH 03301 WATERBURY CONNECTICUT

T(603) 224-4182 DRAWN BY SM CHECKED BY DMwwwnobisengcom Client - Focused Employee - Owned PROJECT NO 80109 DATE JULY 2016

  1. barcode 591225
  2. barcodetext SEMS Doc ID 591225
Page 7: Scovill Industrial Landill Waterbury, CTWaterbury, CT SITE DESCRIPTION: The Site, encompassing about 25-acres, is bounded to the north by residential properties along Newbury Street

Wall

Overhang

Overhang

Overhang

Red Paint M

arks (Electric)

Orange Paint M

arks (Telephone)

Blue

Paint Marks

Yellow Paint Marks

Blue Paint Marks (Water)

Green Paint Marks (Sewer)

Yellow Paint Marks (Gas)

Red P

aint M

arks (

Electric

)

Orange

Pain

t Mark

s (Tele

phon

e)

Red Paint Marks (Electric)Orange Paint Marks (Telephone)

Concre

te Pa

d44

50

EXISTING BUILDING

EXISTING BUILDING

EXISTING

EXISTINGBUILDING

X X X

EXISTING

BUILD

ING

EXISTIN

G BU

ILDIN

G

X

SNET

8933

Wall

Wall

EXISTING BUILDING

LEGEND

EXISTING BUILDING

18 Popular 20 Popular 16 Popular

EXISTING WETLANDS TO REMAIN (APPROX 107440 SF)

EXISTING WETLANDS TO BE REMOVED (APPROX 6370 SF)

PROPOSED WETLANDS TO BE MITIGATED (APPROX 11360 SF)

PRELIMINARY LIMIT OF PROPOSED SOIL CAP

RISK AREA BOUNDARY

00 150 300

GRAPHIC SCALE EXISTING BUILDING

FIGURE 6

SITE RESTORATION SCOVILL INDUSTRIAL LANDFILL SUPERFUND SITE

STORE AVENUENobis Engineering Inc 18 Chenell Drive

Concord NH 03301 WATERBURY CONNECTICUT

T(603) 224-4182 DRAWN BY SM CHECKED BY DMwwwnobisengcom Client - Focused Employee - Owned PROJECT NO 80109 DATE JULY 2016

  1. barcode 591225
  2. barcodetext SEMS Doc ID 591225