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The Kenyon Piece Landfill Site is located off Sand Plain Road near the intersection of Sand Plain Road and County Trail [a.k.a. Rhode Island (RI) Route 2] in Charlestown, Washington County, RI. The Site consists of an irregular L-shaped 62-acre parcel of land identified on the Town of Charlestown Tax Assessor’s Map No. 25 as Lot No. 94. The geographic coordinates of the Site, as measured from its approximate center, are 41 26' 21.6" north latitude and 71 38' 19.8" west longitude. Land use within 1 mile of the property is zoned as mixed residential/agricultural/commercial. The 62-acre Site is bounded by Sand Plain Road to the north; RI Route 2 to the east; and residential properties, woodland, and farmland to the south and west. A right-of-way for overhead electric utility lines traverses the south-central portion of the property in a northeast to southwest direction.
RI DEM had MACTEC Engineering and Consulting, Inc. (MACTEC) performed a Targeted Brownfields Assessment (TBA) and Site Investigation (SI). In the MACTEC January 2007 Data Submittal Report, MACTEC identified 7 test pits with buried drums and containers. Analytical results in the report also identified lead, toluene, ethylbenzene, tetrachloroethene, and naphthalene in the soil and groundwater at levels high enough to support the need for a Federal response. In August of 2007, the Rhode Island Department of Environmental Management (DEM) notified EPA of the presence of buried drums and containers at this vacant property and requested EPA’s assistance in addressing the Site. On November 6, 2007, EPA initiated a Preliminary Assessment/Site Investigation (PA/SI) which included walking the Site with representatives of DEM, reviewing site background information, sampling of surface soils, and mapping magnetic anomalies using geophysical surveys to verify the areas identified in the TBA. The PA/SI was concluded, and a removal action was recommended in a closure memo dated June 20, 2008.
Beginning the week of 9/29/2008 and continuing through the week of 10/20/2008:
1) Buried containers and drums continue to be excavated, overpacked, and staged;
2) As the drums and containers were exhumed, additional areas were cleared and grubbed in order to follow the trenches in which the containers and drums were buried;
3) As the drums and containers were exhumed, they were counted, inventoried, and inspected for any labeling information which might indicate their origins;
4) Air monitoring was performed at the perimeter of the Site throughout invasive site activities and no contaminants were identified as migrating outside the exclusion zone;
5) As of 10/24/2008, the following containers and drums were been exhumed, overpacked, and staged:
201 55-gallon drums
1705 5-gallon pails
12 1-gallon pails
Depending on the condition of these drums and containers (in tact, crushed, leaking, etc..), they we placed in either 95-gallon plastic overpacks, 85-gallon steel overpacks, or 55-gallon steel overpacks.
On 10/8/2008, a meeting was held a metting on Site with EPA Removal Program Section Chief David McIntyre, OSC Allen Jarrell, Shaw RM John Kiley, Weston START Brendan Grimm, and RI DEM Waste Management Program Manager Cynthia Gianfrancesco, and RI DEM staffer Ann Battersby to discuss future plans for this removal action. It was noted that the number of drums and containers found thusfar greatly exceed all prior estimates. Thus, the budgeted cost of T&D of the exhumed waste will be significantly increased.
This removal action began under an ERRS contract which will expire the end of December. $600,000 has be dedicated to the contract for this Site, of which approxiamately $120,000 remains as of 10/24/08. These remaining funds will cover the operational expenses, demobe and administrative costs at the Site through the end of the year and contract closeout. Future operational costs, remobe, T&D, etc. will be transferred to the new ERRS contract which began FY09.
Planned Removal Actions
1) Operational activities (Buried drums and containers excavated, overpacked, staged, counted, inventoried, inspected, and air monitoring performed at the Site perimeter) will continue under the expiring ERRS contract until the end of November;
2) The Site will be demobed with respect to the expiring ERRS contract and remobed to the new ERRS contract (a PR will be cut initiating actions under the new contract). To the extent possible, Site equipment will be kept on Site and transferred between contracts;
Under the new ERRS contract beginning in December 2008,
1) Items 1-4 under Current Activities will continue excavated, overpacked, and staged;
2) Perform any necessary additional sampling, analysis, characterization, and removal of hazardous substances as deemed necessary by the OSC;
3) Identify and characterize waste streams and develope waste disposal profiles;
4) Provide transportation and disposal of hazardous substances at CERCLA-approved off-site disposal and recycling facilities in a safe and as cost-effective a manner as possible;
5) Backfill any areas where buried drums and containers were removed;
6) Install a 2ft earthen cover over the excavated areas;
7) Repair any response-related damage; and
8) Demobilize all equipment, supplies and personnel as they are no longer needed at the Site.
An amendment to the Removal Action Action Memo for this Site will need to be done based on the significant increase to the extent of contamination found (i.e., the number of drums and containers anticipated to be exhumed). In addition, a earthen cover is now being planned to cover the areas where the drums have been removed.
The OSC will direct and coordinate with START and ERRS the ongoing removal action. The OSC will continue a dialogue with the residents surrounding the Site in order to answer any concerns they may have. In addition, RI DEM and the town of Charlestown will assist the OSC in coordination of efforts to determine the location of buried drums on the Site.
The town of Charlestown and RIDEM has raised concerns regarding the private drinking water wells of residents down gradient of the Site.
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