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John Johnson <br /> Page 2 <br /> As total petroleum hydrocarbons as diesel and ethylene dibromide have been previously detected <br /> in the groundwater at this site, these constituents must be included in the current groundwater <br /> analytical testing. If these constituents are not detected for two consecutive sampling rounds, then <br /> these additional tests can be discontinued. <br /> Any field work needed to investigate the feasibility of various remedial alternatives (i.e. groundwater pump <br /> tests, vapor extraction tests, etc.) should be scheduled and completed during the assessment phase. Once <br /> the investigative field work is complete, a Corrective Action Plan addressing the cleanup of all identified <br /> contamination at the site,will be requested. <br /> As previously noted in a letter to you from PHS/EHD, dated November 6, 1992, quarterly status reports <br /> are a minimum compliance requirement pursuant to Section 2562(d), Chapter 16,Title 23, of the <br /> California Code of Regulations. <br /> Quarterly monitoring and sampling of the wells at this site should continue at this time. As additional <br /> data is collected and additional wells are installed at the site, a modification to the number of wells <br /> sampled and the frequency of sampling may be requested. Any request for a change in the sampling <br /> frequency at this site should be based on site specific conditions, on the data that has been collected to <br /> date, and on the data that will need to be collected in the future to effectively monitor the contaminant <br /> r plume and the progress of the cleanup. <br /> Please continue to provide 48 hours notice prior to any sampling activity at this site. If you have any <br /> questions, please contact Linda Turkatte, RENS, of my staff at(209) 468.3441. - <br /> Jogi Khanna, M.D. P.H. <br /> Health Officer.,-'- <br /> Laurie <br /> fficer./Laurie A. Cotulla, REHS, Program Manager <br /> nvironmental Health Division <br /> I <br /> LAC/LT:lb <br /> c: CVRWQCB-Beth Thayer j <br /> c: John and Francine Sallaberry <br /> c: Parker Environmental-Jim Parker <br /> . j <br /> I <br /> I <br /> I <br />