2008-09-09-PBC-min - Laserfiche WebLink

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17 September 2008 Meeting Minutes Lexington Permanent Building Committee (PBC) Location: Cary Memorial Hall-Estabrook Meeting Room 09 September 2008 Date & Time: , 7:00PM 2.6 Soil Testing Required at Current Excavation HKT/WS 5/13/08 HKT stated that additional soil testing is required based on soil excavation at site. PBC approved Weston & Sampson to provide LSP services Ï Eric Brown made the motion, Carl, all members approved. 6/10/08 The approved LSP services above included the excavation of test pits under DEP direction to define the extent of previously found contaminants. These test pits have led to the discovery of seven steel barrels, some containing an oil or waste oil liquid. DEP was contacted by the LSP and conducted a site visit. A report was issued by DEP and agreed to by the LSP as appropriate such that the balance of this rear portion of the site could be evaluated to determine if additional steel barrels or contaminants exist, without having to excavate the whole rear portion of the site. The recommended direction is to remove all stock piled material from the rear of the site make improvements to the rough grade and have a subcontractor examine the areas with large metal detectors, magnetometers, and ground penetrating radar. A proposal for On-site LSP services to coordinate and manage this newly defined situation was developed by Weston and Sampson and presented to the PBC. Weston and Sampson Revised Proposal dated 06 June 2008, requests an additional $19,600, in additional to the already approved $18,900 proposal for services approved last month. The figures do not; yet include contractual mark-up by HKT. PBC expressed the Town Project representatives should have a review meeting or discussion with Weston and Sampson as the results of this work come in to evaluate options. Weston and Sampson 6/6/08 Revised Proposal approved by PBC. Motion: Bill Bruckman 2nd Eric Brown Vote: Unanimous 7/8/08 Weston and Sampson presentation included summary of events and testing, copies of which were distributed to the PBC. Original notification to DEP for first barrel findings 5/29/08 Immediate Action Response requested by DEP Magnetometer and GPR Survey completed by 6/25/08 Preliminary report and findings presented 7/8/08. Preliminary test results indicate multiple Ares showing metals and or potential additional barrel locations. Additional test pitting is required to discover extent of contaminant locations. Balance of test pitting operations from previously approved services should cover work needed for this task. Completion of test pitting will result in development of IRA report and determination from DEP as to extent of remediation work required. Rear end of site may be unavailable to GC until mid to late Sept. depending upon continued findings and extent of remediation required. Once test pitting is complete and extent of contamination is defined options can be evaluated as to the extent of remediation that is recommended, and or any options to accept restrictions on site based upon reduced or limited remediation. WS presented Professional Services amendment in the amount of $18,000 (The figures do not; yet include contractual mark-up by HKT) to cover professional services for IRA Plan Preparation as required by DEP, installation of monitoring wells, as required by DEP and solicitation of quotes for removal of on site material already approved for removal. 5