Laserfiche WebLink
_ = Geological Audit Services, Inc. <br /> Environmental Professionals <br /> v�v <br /> 0W 22911 Savi Ranch Parkway •Yorba Linda, CA 92687•(714)283-0130• FAX(714)283-0258 <br /> 19 June 1992 <br /> (GeoAudit CV 30-34E3-1. 33) <br /> Mr. Harlin Knoll, REHS /p �■ <br /> San Joaquin County!" <br /> Public Health Services - Environmental Health Div <br /> P.O. Box 2009 JUN 2 9 1892 <br /> Stockton, California 95201 k'"RON M€TTL NgALTH <br /> PERM17/U9NVIUC9 <br /> Subject: Addendum to Final Remedial Action Plan (FRP) for Geweke - <br /> 16 South Cherokee Lane, Lodi, California <br /> Cleanup and Abatement Order No. 90-702 <br /> Dear Mr. Knoll: <br /> In accordance with the request of our client, Mr. Jeff Werner of <br /> Geweke, we have prepared this addendum to the Final Remedial Action <br /> Work Plan (FRP) . The original work plan was submitted in December <br /> 1991 to your agency. A response letter from the SJEHD, requiring <br /> additional information, was received by our office on 12 June 1992. <br /> Our response to the letter is as follows: <br /> 1. As indicated on Page 3 of the FRP, the lateral extent of the <br /> vadose zone contamination has not been fully delineated. <br /> Therefore, we could not provide you with maps or figures <br /> depicting the extent of this contamination. One of the <br /> objectives of the FRP is to further assess the extent of the <br /> impacted soil. For an in-situ mitigation method to be <br /> successful, a thorough and accurate delineation is mandatory. <br /> This goal is achieved by a combination soil-gas survey and <br /> soil borings as explained in sections 3 .7. 1. and 3 .7. 2 . of the <br /> FRP. <br /> The down-gradient assessment of the contamination in the <br /> saturated zone has not been fully completed either. The <br /> previous consultant, PES Environmental, Inc. , depicted <br /> isopleth maps for both total petroleum hydrocarbons (TPH) and <br /> benzene as Figures 4 and 5, respectively on PES report dated <br /> July 1991. These are the most current data available to <br /> Geological Audit Services. Since our company has not performed <br /> any sampling, we have not been able to provide you with a more <br /> recent/different status on the level and extent of the ground <br /> water contamination or any maps or figures related to this <br /> matter. <br /> Full Spectrum Environmental Services• Hydrogeology <br />