ENB - REGION 6 NOTICES

Completed Applications
Consolidated SPDES Renewals

Public Notice

Notice of 6NYCRR Part 373 Post-closure Permit and
Groundwater Monitoring Program Termination

USEPA ID No.: NYD002240638
NYSDEC Permit No.6-2128-00034/00001-0

FACILITY: Remington Arms Company, Inc. Ilion, New York 13501

PROJECT SUMMARY: In 1995, Remington Arms completed the investigation of potential releases of hazardous waste constituents at it's Ilion Facility (Site Hydrogeologic Characterization for Remington Arms (1991), RCRA Facility Assessment Sampling Visit Report, Remington Arms Facility, Ilion, New York" (RFA) report (1995)). Although low levels of volatile organic compounds were observed in the groundwater, Remington concluded that "plant operations, as a whole, have not significantly impacted groundwater quality". The NYSDEC concurred with that conclusion, but required Remington to conduct chemical sampling of wells MW-4, MW-5, MW-6, MW-7 and MW-11 to determine whether the magnitude of the contaminant plume was increasing. A list of the hazardous waste constituents which have been released to the groundwater, and the "groundwater quality standard" for the constituents is included in Table 1.

TABLE 1

PARAMETER CAS# GROUNDWATER

QUALITY

STANDARD

(/L)

Volatile Organic Compounds
Methylene chloride 75-09-2 5.0
Trichloroethylene 79-01-6 5.0
1,2-Dichloroethylene (total) 75-35-4 5.0
Vinyl chloride 75-01-4 2.0
Chloroform 67-66-3 6.0

Groundwater monitoring data collected at the facility since 1995 supports Remington's conclusions (see Annual Groundwater Monitoring Program Report, July 2002). The observed concentration of hazardous constituents in the groundwater is near or below the New York State groundwater quality standards (see Table 2). Based upon those data the Department has determined that natural attenuation of the groundwater contamination is occurring at the facility and that active remediation of the contamination is not necessary at this time. Furthermore, the consistency of the groundwater quality data is such that it is reasonable to predict that future contaminant concentrations will be no greater than those observed historically. Given the historical data and the fact that the area downgradient of the facility is supplied with public water, continued monitoring is no longer necessary to confirm that the currently observed plume of contamination does not represent a significant threat to human health or the environment.

New York State TABLE 2
Parameter Standards (11/27/95) (5/21/96) (11/19/96) (5/21/97) (5/14/98) (5/24/99) (5/25/00) 5/10/01 5/20/02
(/L) MW-4
Methylene chloride 5 ND (5) ND (5) ND (5) ND (5) 1(J) 0.5JB ND (2) ND (2) ND (2)
cis-1,2-dichloroethene 5 ND(5) ND (5) ND (5) ND (5) ND (5) ND (5) ND (2) ND (1) ND (0.8)
Chloroform 7 ND(5) ND (5) ND (5) ND (5) ND (5) ND (5) ND (1) ND (1) ND (0.8)
Trichloroethene 5 ND(5) ND (5) ND (5) ND (5) ND (5) ND (5) ND (1) ND (1) ND (1)
Vinyl Chloride 2 ND(10) ND(10) ND(10) ND(10) ND(10) ND(10) ND (2) ND (1) ND (1)
Total VOC's 100 ND ND ND ND 1 0.5 ND ND ND
MW-5
Methylene chloride 5 ND (5) ND (5) ND (5) ND (5) 1(J) 0.6JB ND (2) ND (2) ND (2)
cis-1,2-dichloroethene 5 ND(5) ND (5) ND (5) ND (5) ND (5) ND (5) ND (2) ND (1) ND (0.8)
Chloroform 7 ND(5) ND (5) ND (5) ND (5) ND (5) ND (5) ND (1) ND (1) ND (0.8)
Trichloroethene 5 ND(5) ND (5) ND (5) ND (5) ND (5) ND (5) ND (1) ND (1) ND (1)
Vinyl Chloride 2 ND(10) ND(10) ND(10) ND(10) ND(10) ND(10) ND (2) ND (1) ND (1)
Total VOC's 100 ND ND ND ND 1 0.6 ND ND ND
MW-6
Methylene chloride 5 ND (5) 18 J, N 2J ND (5) ND (5) 0.3J ND (2) ND (2) ND (2)
cis-1,2-dichloroethene 5 ND(5) ND (50) ND(5) ND(5) ND(5) ND(5) ND (2) ND (1) ND (0.8)
Chloroform 7 ND(5) ND (50) ND (5) ND (5) ND (5) ND (5) ND (1) ND (1) ND (0.8)
Trichloroethene 5 ND(5) ND (50) ND (5) ND (5) ND (5) ND (5) ND (1) ND (1) ND (1)
Vinyl Chloride 2 ND(10) ND(100) ND(10) ND(10) ND(10) ND(10) ND (2) ND (1) ND (1)
Total VOC's 100 ND 18 2 ND ND 0.3 ND ND ND
MW-7
Methylene chloride 5 ND (5) ND (5) 2J ND (5) 0.8(J) ND (5) ND (2) ND (2) ND (2)
cis-1,2-dichloroethene 5 ND(5) 14 16 10 6 9 ND (2) 1 J 2 J
Chloroform 7 ND(5) ND (5) ND (5) ND (5) ND(5) ND(5) ND (1) ND (1) ND (0.8)
Trichloroethene 5 ND(5) 25 29 21 6 19 5 J 3 J 3 J
Vinyl Chloride 2 ND(10) ND(10) 1J ND(10) ND(10) 0.9J ND (2) ND (1) ND (1)
Total VOC's 100 ND 39 48 31 12.8 28.9 5 4 5
MW-11
Methylene chloride 5 ND (5) 2J, N ND (5) 1(J) 2(J) 0.5 (JB) ND (2) ND (2) ND (2)
cis-1,2-dichloroethene 5 6 4J 6 3(J) 3(J) 3(J) 4 J 2J 3J
Chloroform 7 2 J ND (5) ND (5) ND (5) ND(5) 0.6J ND (1) ND (1) ND (0.8)
Trichloroethene 5 9 7 10 7 5 6 9 7 8
Vinyl Chloride 2 ND(10) ND(10) ND(10) ND(10) ND(10) ND(10) ND (2) ND (1) ND (1)
Total VOC's 100 17 13 16 10 10 10.1 13 9 11

Notes: ND (5) = compound not detected at 5 (µ/L) J = estimated concentration (µ/L) B = analyte found in blanks N = tentative identification

TENTATIVE DETERMINATION: The purpose of the monitoring program was to track changes in the low level concentrations of groundwater contaminants which have been observed at the site. Based on the groundwater data collected since the monitoring program began in 1995, the NYSDEC has tentatively determined that the groundwater contamination has diminished to the point that the groundwater monitoring program is no longer necessary.

In June 2000, Remington informed the NYSDEC that it was planning to close its permitted drum storage facility and subsequently re-open the facility under the 90 day generator exemption. Those activities were completed in December 2000. Given the closure of the drum storage facility and the proposed termination of the Corrective Action Groundwater Monitoring Program, Remingtion will no longer need a 6 NYCRR Part 373 permit to regulate its ongoing activities. Therefore, the NYSDEC is herein proposing to not renew Permit No.6-2128-00034/00001-0 (which expired in June 2000 and was thereafter SAPA extended).

DOCUMENT AVAILABILITY: Copies of the Fact Sheet, the RCRA Facility Assessment Sampling Visit Report (July 1995) and the Annual Groundwater Monitoring Report (July 2002) are available for inspection at the Remington facility (Contact Person: Mr Bruce Firman, Phone:(315) 895-3258, E-mail: Bruce.Firman@Remington.com) and at: NYSDEC Region 6, 207 Genesee Street, Utica, NY 13501 (Contact Person:Mr. J. Joseph Homburger, Phone: (315)793-2560 E-Mail: jjhombur@gw.dec.state.ny.us).

HOW TO PROVIDE YOUR COMMENTS: All comments will be considered when making the final decision regarding continuation of the monitoring program. A response to any comments submitted will be issued which will describe and respond to the issues raised, and will identify any changes to the proposed decision. A notice of the decision will be sent to each person who submits written comments or who requests such notice.

Comments must be sent either to the above-listed contact person at the NYSDEC Region 6 Office, or to William Wertz, NYSDEC Division of Solid & Hazardous Materials, 625 Broadway, Albany, NY 12233. In lieu of or in addition to the submission of comments as provided above, any interested persons may request a public hearing.

All comments and/or requests for a public hearing must be submitted in writing no later than May 26, 2003.

Note In addition to the monitoring program described above, Remington also monitors the groundwater in the northeastern part of the plant to track residual gasoline contamination from former gas stations in the area. The NYSDEC Division of Environmental Remediation Spills Program will continue to assume responsibility for regulatory oversight of the residual gasoline contamination. The groundwater monitoring program associated with Spill No. 9506245 which is being administered by the NYSDEC Division of Environmental Remediation is unaffected by this proposed action.