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TO: MR. DAVE CASTLE `.. October 26, 1989 *—O WESTERN GEO—ENGINEERS <br /> PCI ENVIRONMENTAL ENGINEERING 1386 E. Beamer Street <br /> 2076 Alcoma Street Woodland, CA 95695 <br /> Sacramento, CA 95815 Sec 12/13; T9 N; R6E; MDBBM (916) 662-4541 <br /> (916) 972-8155 FAX 972-5529 (Projected) <br /> SUBJECT: SOIL SAMPLING AT YID CAL TRACTOR <br /> 1120 W. Charter Way <br /> Stockton, CA <br /> SAMPLING DATE — 10/6/89 <br /> WEST CHARTER WAY <br /> N Agency Representatives on Site: Carol Oz. Environmental Specialist <br /> with San Joaquin County and Ron Hlrshner. Fire Inspector with the <br /> City of Stockton <br /> NOTES: <br /> 1 — 1.000 gallon diesll and 1-10,000 gallon unleaded gasoline <br /> underground storage tanks were exhumed. The tanks had been In the <br /> Around since 1672 (diesll) and 1870 (unleaded). No petroleum odor <br /> from either tank excavation. Tanks appeared to be In good condition <br /> BUILDING Excavations (some rust. no visible holes). <br /> Backfill from excavation — predominately well graded, poorly sorted <br /> clayey sand with minor gravel. No odor and 0 ppm PID readings on <br /> all backfill plies except the small pile at the north end of the large <br /> (10K) excavation. This pile had a moderate diesll odor with HNU PID <br /> Q i 10K—N readings from 5-25 ppm. <br /> 1 <br /> 1K—N j� I I Four soil samples were collected (two from each excavation) using a <br /> I i I backhoe. Samples were taken from 3 to 4 feet Into native soil beneath <br /> 1K—S I I each end of the tanks. Samples 10K—N, 10K—S, and 1K—S consisted <br /> of SILTSTONE: medium brown, firm—sllphtly hard, triable, blocky, with <br /> l common clay, no petroleum odor and HNU PID readings of 0 pm. <br /> I O l 10K—S Sample 1K—N consisted of the same SILTSTONE: discolored to a light— <br /> I _� medium rey with a moderate to strong odor and a reading of 120ppm <br /> — on the AU PID. Samples were Immediately labled, placed on dry <br /> ice, and chain of custody hand delivered to Eureka Laboratory in <br /> MAP NOT TO SCALE Sacramento, CA. <br /> O SOIL SAMPLE LOCATION <br /> EUREKA LABORATORY INC.. RESULTS <br /> SAMPLE SAMPLE ID TEPH(PPM) BENZENE TOLUENE E. BENZENE XYLENE <br /> TYPE (PPB) (PPB) (PPB) (PPB) <br /> Soil 1K—S <10 <1 <1 <1 <1 <br /> Soil 1K—N <10 <1 <1 <1 <1 <br /> Soil 10K—S <0.2 <0.2 <1 <1 <1 <br /> Soil 10K—N <0.2 <0.2 <1 41 <1 <br /> TEPH — TOTAL EXTRACTABLE PETROLEUM Please note that results must be reported to: <br /> HYDROCARBONS Public Health Services <br /> PPM — PARTS PER MILLION San Joaquin County <br /> E. BENZENE — ETHYL BENZENE 1601 East Hazelton Avenue <br /> Stockton, California 96201 <br /> Attn: Ms. Latitia Resch <br /> SUBMITTED BY: Jack Napp Dave Marks <br /> Registers Geologist "3037 Geologist <br />