Laserfiche WebLink
10/02 '00 THU 13:27 FAX 19259469968 ERNWEST WC IM004 <br /> Minutes of 9 February 2000 ting l./ <br /> 10 February 2000 <br /> been sampled for at the site. Mr. Brandy stated that,at the request of the County, <br /> these compounds had been analyzed for and that the results were summarized in <br /> previous correspondence to the County. MTBE has not detected been detected at <br /> the site and lead has only been detected at low concentrations in soil (indicative <br /> of background concentrations). <br /> Mr. Hartzel asked if a search into potential receptors had been conducted. Mr. <br /> Brandy stated that Department of Water Resources (DWR)records were <br /> reviewed for wells downgradient of the site,and that no active water wells were <br /> identified within a half mile of the site in the downgradient direction. Ms. <br /> Lagorio and Mr. Knoll then discussed their knowledge of other wells in the area. <br /> Ms. Lagorio stated that there were wells upgradient of the site that were in use <br /> and that DWR records do not always contain information on all wells. She stated <br /> that some inspection into downgradient businesses might be warranted to make <br /> certain there are no active wells downgradient of the site. <br /> Mr. Hartzel asked the current condition of the site and if there were any potential <br /> on-site exposures to the groundwater. Mr. Brandy stated that the site was paved <br /> and that the area is expected to remain paved in the future. Therefore,potential <br /> exposures are limited to construction activities at the site. Mr.Hartzel stated that <br /> nâ–șigration of vapors to the surface was also a potential exposure pathway. <br /> Mr. Brandy then stated the Heinz would like to prepare a closure report for the <br /> site. Mr. Knoll, Ms. Lagorio,and Mr. Hartzel stated that a closure report could <br /> be prepared for the site. They stated that the remaining benzene concentrations <br /> in groundwater were higher than sites they have previously closed,however <br /> other concern parameters have shown decreasing trends. They asked that one <br /> additional round of groundwater sampling be performed to demonstrate that <br /> biodegradation was occurring at the site. They also asked that a risk assessment <br /> be performed to evaluate the risks posed to construction workers and <br /> commercial/industrial workers (via vapor migration to the surface). They stated <br /> that if conditions show biodegradation is occurring and the risks are at <br /> acceptable levels,site closure was feasible. <br /> Mr. Krall indicated that he would like to perform the additional round of <br /> groundwater sampling in early March 2000 and submit the site closure report <br /> following the completion of the groundwater sampling. <br /> 3 <br />