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FILE •i �k <br /> PUBLIC HEALTH SERVICES OpQU�!v. <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Karen Furst, M.D., M.P.H., Health Officer <br /> 304 East Weber Avenue, Third Floor Stockton, CA 95202 <br /> 209/468-3420 <br /> AUG 0 3 2000 <br /> MICHAEL D & SHARON OLIVAREZ <br /> 436 SCOTTS AVENUE <br /> STOCKTON CA 95203 <br /> Re: Skips Service Station Site Code: 1038 <br /> 300 S. California St. <br /> Stockton, CA <br /> San Joaquin County Public Health Services Environmental Health Division (PHS/EHD) <br /> has reviewed the Report dated July 10, 2000 prepared by Foothill Engineering for the <br /> above referenced site. The Report contained the following information: <br /> 1. Analysis of Soil Boring Samples from MW#5 and MW#6 <br /> 2. Monitoring Well Information and Water Sample Analytical Testing of 5/11/2000 <br /> 3. Analysis of Cone Penetrometry Test boring (CPT)#3 installed on 6/9/2000 in the Cal <br /> Trans right-of-way <br /> Soil and groundwater samples collected during the investigation evidence contamination. <br /> The vertical extent of contamination appears to be defined in soil. Soil and groundwater <br /> samples collected from the boring of CPT#3 evidenced groundwater contamination but <br /> did not evidence soil contamination. The lateral and vertical extent of groundwater <br /> contamination needs to be defined. The groundwater gradient has fluctuated from north <br /> to northeast at the site. PHS/EHD recommends the placement of Monitoring Wells <br /> (MWs) screened at different relevant intervals near the location of CPT#3. The <br /> installation of MWs northeast of MWS may also be necessary. <br /> If further water sample results from MW5 and MW6 confirm groundwater <br /> contamination; deeper screened MWs on site will be required. Once the vertical extent <br /> of contamination on site is shown, the lateral extent of the plume must be defined. <br /> A boring permit application and $89.00 permit fee must be submitted to PHS/EHD for <br /> off-site work that was performed by Spectrum Drilling on May 3, 2000. This work was <br /> performed under permit#019872,which was issued for the installation of on site MWs. In <br /> addition, an encroachment permit from the City of Stockton for the May 3, 2000 drilling <br /> must accompany the permit application. <br /> A well receptor survey was to have been conducted as outlined in the Work Plan dated <br /> April 28, 1999 prepared by Foothill Engineering. This information was to have been <br /> submitted with the above Report. The well receptor survey information has not been <br /> A Division of San Joaquin County Health Care Services <br />