ARCHIVED REPORTS_XR0012622 - Laserfiche WebLink

Home Browse Search

subsequent analyses. Communication with the laboratory suggest -. there may have been some error in sampling handling, analysis and/or result confirmation procedures. The laboratory results for the domestic well samplings are presented in Appendix III. A review of the laboratory water analysis data and Dissolved Eydrocarbons in Water Maps permits the following trends and observations to be made: i - Although initial analysis suggested that a number of - domestic wells contained detectable concentrations of dissolved - hydrocarbons subsequent analysis of four sample rounds indicate f the levels to be below method detection limits suggesting that the initial results were in error. - A dissolved plume elongated in a southeasterly direction, the general direction of the g_oundwater flow, extends a distance .�� of approximately 300 feet down gradient. Increases in the dissolved concentrations ;n monitoring wells 5 and 8 between the July 17 and the August 4, 1986 samp- lings suggest that _he dissolved plume is migrating in a south- easterly to easterly direction. ! t E IHITTAL ABATEMENT PROGRAM PRODUCT RECOVERY s Because free product accumulated within monitoring wells 1 and 4 just after their installation in early May 1986, the San Joaquin County Local Health District required the initiation of . product a recovery program. A periodic hand bailing program was started on May b, 1986, to begin recovery of the accumulated product. In early July, a small diameter double pumping system was installed in the 4 inch monitoring well 4 to initiate some 22 i;