NJDEP # G000004437—Groundwater and Air Contamination Case Manager: Timothy Bartle (609) 984-2001 Summary: Franklin Township Pennsylvania Avenue Sanitary Landfill This case has been transferred to Solid and Hazardous Waste Program. On September 14, 2006 Fralinger Engineering, PA submitted quarterly landfill gas survey results for the Franklin Township Landfill (“landfill”). In response to the submittal the Department responded as follow: “The Department appreciates the efforts of Franklin Township to conduct quarterly landfill gas monitoring at the landfill. However, certain clarifications regarding your letter are in order, which will need to be addressed. The third paragraph on page three of your methane gas monitoring report states the following: The purpose of this investigation was to monitor methane gas levels to determine if any plume migration was occurring on or off-site as part of NJDEP’s approved closure plan. For the purpose of clarifying the record, please be advised that the Department has never approved a closure plan application for the Franklin Township Landfill. Alexander M. Churchill Associates initially submitted a closure plan application for the landfill in April 1984. Subsequently, two feet of final cover was installed and your office prepared an “as-built” topographic survey on April 4, 1995. Meanwhile, Franklin Township had sought a conceptual approval from the Department for the construction of recreational ball fields on the landfill. Please refer to the Department’s letters dated May 3, 1995 and March 1, 1996 (copies enclosed for your reference) whereby we approved the construction of ball fields since final cover would be enhanced in most sections of the landfill with an additional foot of soil. However, as noted in the aforementioned letters, a revised closure and financial plan was to have been submitted by your office, which would contain post-closure maintenance and monitoring measures that is reflective of the proposed site restoration/recreational activities. At the present time, the approved “as-built” topographic survey and on-going methane gas monitoring both partially fulfill the requirements of a closure plan submission. To complete the balance of a revised closure plan submission, the following items shall be submitted: * A financial plan that incorporates the 30-year post-closure monitoring period from the date that final cover certification was accepted. If in-kind resources are used for the maintenance of the recreational fields, they should be clearly identified; * Our records indicate that groundwater monitoring pursuant to the landfill’s New Jersey Pollutant Discharge Elimination System Discharge to Groundwater (NJPDES DGW) permit is currently in progress. Please provide a status update on the NJPDES groundwater monitoring program and identify the source of funds used to conduct groundwater monitoring; * Since the construction of recreational fields has been completed and post-closure monitoring is underway, the plan shall contain a certification statement set forth at NJAC 7:26-2A.9(d)10v, signed and sealed by a New Jersey licensed professional engineer; * In accordance with NJAC 7:26-2A.9(c)4, a detailed description of the landfill shall be recorded, along with the deed, with the county recording office following closure of the landfill. The description shall include the general types, locations and depths of wastes on the site, the depth and type of cover material, and the dates the landfill was in operation. The deed shall also provide notice that any future disruption of the landfill shall require prior approval from the Department. Submission of a draft deed recording to the Department for review is not required. With regard to the 3rd Quarter 2006 gas monitoring results, we note that six readings from 67 sampling locations exceed 25 percent of the lower explosive limit along the westerly boundary of the landfill. Three of the readings recorded 80 percent of the lower explosive limit (location points 38, 44 and 51A), which can result in potentially explosive conditions in confined spaces. In accordance with NJAC 7:26-2A.8(h)9ii, the Department reserves the right to require more detailed and/or frequent gas surveys should gas is detected within the buffer zone. As such, for the next gas sampling round, additional sampling points shall be undertaken radially outwards from sampling locations 38, 44 and 51A in order to define the extent of methane gas migration to the adjacent property. In addition, please identify the locations of the nearest confined spaces from the westerly boundary of the landfill.” Groundwater Contamination There are four monitoring well in place and these well only indicate minimal impact to ground water. The only noted contaminant is ammonia. 6/1/07 NJDEP Community Relations Department 06/13/2007 UPDATE NJDEP # G000004437-Groundwater and Air Contamination Site Manager: Mark Searfoss-609 984-6058 (Former Case Manager Timothy Bartle (609) 984-2001, case transferred to the Solid and Hazardous Waste Manangement Program) Update: Franklin Township Pennsylvania Avenue Sanitary Landfill June 13, 2007- Kate Venner, Intern, NJDEP Site Remediation Office of Community Relations provides update from Marl Searfoss, Site Manager. The summary is an excerpt from a letter Mark Searfoss sent to the Twp. Environmental consultant on 10/12/06. "The consultant responded on 11/6/06 and indicated that 'regarding the closure/post-closure submission, the work has been budgeted for 2006/2007 and preparation of the plan is in progress by this office.'" The closure plan submission has not yet been received. DEP will be sending out a letter to remind the consultant. Mr. Searfoss indicated that ground water results are copied to the township (they are NJPDES permittee) and the township would have them on file. Mr. Searfoss confirmed that "At the present time, we do not know what the extent (if any) of methane gas migration is to adjoining properties. In my letter of 10/12/06 to the consultant, I requested that additional sampling points be undertaken radially outwards along certain portions of the westerly boundary of the landfill. I would expect this information to be available in their next methane gas test report." No date is specified for the report. No RI (Remedial Investigation) undertaken at the site as it is being handled as a closure /post-closure project under the solid waste rules. The landfill is publicly owned, there is no single responsible party. For Ground Water Results contact: Tom Everitt- 609 984-6664-Solid and Hazardous Waste Management Program