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t TO: MR. DAVE CASTLE`+► October 26, 198L­( ._-,NESTERN GEO-ENGINEERS <br /> PCI ENVIRONMENTAL ENGINEERING 1386 E. Beamer Street <br /> 2076 Alcoma Street Woodland, CA 95695 <br /> Sacramento, CA 95815 Sac 12/13; TIN; >z15E; hlCeM (916) 662-4541 <br /> (916) 972-8155 FAX 972-5629 (PirojecIted) <br /> SUBJECT: SOIL SAMPLING AT YID CAL TRACTOR! <br /> 1120 W. Charter Way <br /> Stockton, CA <br /> SAMPLING DATE - 10/6/89 �u <br /> WEST CHARTER WAY <br /> N Agency Representatives on Site: Carol Oz. Environmental Specialist <br /> w with San Joaquin County and Ron Hirshner. Fire Inspector with the <br /> City of Stockton <br /> NOTES: _ <br /> A`^� 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 /> fround since 1072 (dusll) and 1979 (unleaded No petroleum odor <br /> rom either tank excavation. Tanks appeared til-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 0pm 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 otlor with HNU PID <br /> 1010K—N <br /> i readings from 5-25 ppm. <br /> 1 <br /> 1K—N I I Four soil samples were collected (two from each excavation) uslnp a <br /> I l I backhoe. Samples were taken from 3 to 4 feet Into native soil beneath <br /> 1K-3 I I I each end of the tanks. Samples 10K—N. 10K—$, and 1K—S consisted <br /> of SILTSTONE: medium brown, firm—silghtly hard, friable, blocky, with <br /> common clay. no petroleum otlor and HNU PID readings of 0 pm. <br /> I O 110K—S Sample 1K—N consisted of the same SILTSTONE: discolored to a light— <br /> I <br /> —_� medlum prey with a moderate to strong odor and a reading of 120ppm <br /> on the HNU PID. Samples were Immediately tabled, placed on dry <br /> Ice, and chain of custody hand delivered to Eureka Laboratory In <br /> MAP NOT TO SCALE Sacramento, CA. <br /> 0 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 41 <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 40.2 <1 <1 <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, Calllornla 96201 <br /> Attn: Ms. Latitia Resch <br /> SUBMITTED BY: Jack Napper Dave Marks <br /> Registered Geologist 03037 Geologist <br />