SITE INFORMATION AND CORRESPONDENCE

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T1 March 26,'1 996 3 7 Ms. Linda Turkatte San Joaquin County Public Health Department 445 North San Joaquin Street P.O. Box 2009 Stockton, California 95201 Reference: Phase II Environmental Investigation at 804 and 810 East Black Diamond Way in Lodi, California, Versar Project No. 3301-002 Dear Ms. Turkatte: Please find enclosed one completed permit application and a check for the $323.00 to cover the necessary fees for one soil boring (Attachment I)to be drilled at 804 and 810 East Black Diamond Way in Lodi, California(Site). Please note that this soil boring is being drilled for the sole purpose of assessing whether an identified up gradient leaking underground fuel storage tank site at the Parmar Texaco has impacted the soils and/or groundwater beneath the Site. There is no known petroleum hydrocarbon contamination at the Site, nor has there ever been any petroleum hydrocarbons sources. Versar,Inc. (Versar) is submitting this permit on behalf of McDonough, Holland& Allen and with the permission of the Site owner, Mr. John Donovan. Included in Attachment II is an Agreement for Right of Entry between McDonough, Holland&Allen's client Reliance Insurance and Mr. Donovan. The Site location is shown in Figure 1 and the location of the proposed boring can be seen in Figure 2. The boring will be drilled to a depth of approximately 65 feet below ground surface (bgs), based on a depth to groundwater of 60 feet. As drilling progresses, soil samples will be collected to determine lithological and environmental conditions. Soil samples will be collected at five-foot intervals beginning at five feet bgs using a California-modified split-spoon sampler fitted with brass sleeves. Based on field screening using a photo-ionization detector,two soil samples will be submitted for laboratory analyses. The boring will be extended into groundwater to allow a"grab" groundwater sample to be collected. All soil and groundwater samples will be analyzed for total petroleum hydrocarbons as gasoline (TPH-G) and benzene, toluene, ethylbenzene, and xylenes (BTE3). After groundwater sampling,the boring will be backfilled with a cement grout with less than 5 percent bentonite tremied from the bottom of the boring to five feet above groundwater. The boring will be backfilled with drill cuttings augmented by Portland cement, if necessary, from the grout seal to surface level. Any additional drilling spoils will be spread on site. Versar's soil and groundwater sampling protocols are included in Attachment III. • SACRAMENTO OFFICE • 7844 MADISON AVENUE,SUITE 167•FAIR OAKS,CALIFORNIA 95628•TELEPHONE:(916)962-1612 FAX:(916)962-2678