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PHONE 285-2400 <br /> v CABLE ADDRESS: TIMOIL <br /> (FAX) 206-283-8036 <br /> T <br /> SEATTLE EN <br /> TACOMA <br /> PORTLAND T <br /> STOCTON <br /> RICHM'OND y 12 ` ,j NE TIME O I L COO <br /> RENO 2 <br /> LOS ANGELES <br /> a a <br /> 7 5 5 T5 2737 WEST COMMODORE WAY SEATTLE,WA 98199-1233 <br /> PRODUCTS T P.O. BOX 2t4 � SEATTLE, WA 98124-0447 <br /> TIME TESTED ME �� p�.. '�y <br /> DEC Z 7 191 December 20, 1992 <br /> ENVIRONME <br /> PERMIT/SERVICES HEALTN <br /> Mr. Harlan Knoll, REHS <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> P.O. Box 2009 <br /> Stockton, California 95201 <br /> RE: Site Remediation <br /> 13475 N. Jack Tone Rd. , Lodi, CA (Property No. 04-026) <br /> Dear Mr. Knoll, <br /> This letter has been prepared to provide you with information regarding the <br /> overexcavation of petroleum-contaminated soils at 13475 N. Jack Tone Rd. , Lodi, <br /> California. Consultant and contractor services were provided by Canonie <br /> Environmental. Please find enclosed Canonie Environmental's "Closure Excavation <br /> and Sampling Report". <br /> On November 16, 1990, six underground storage tanks were removed from the above- <br /> referenced property during a site closure. Three gasoline tanks with volumes of <br /> 12,000, 10,000, and 6,000 gallons were removed from an excavation on the south <br /> portion of the property and three 1,000 gallon tanks with no record of previous <br /> content were removed from a separate excavation on the north portion of the <br /> property. The locations of the former tanks are provided on Figure 1 - Site Plan <br /> of Canonie Environmental's "Closure Excavation and Sampling Report" . <br /> At the direction of Ms. Letitia Resch of the San Joaquin County Public Health <br /> Services Environmental Health Division, soil samples were collected from the tank <br /> excavations by a representative of ETS Environmental per the "Tri-Regional Board <br /> Staff Recommendations" and "LUFT Field Manual" . Samples were also collected <br /> beneath the former piping. All samples were submitted to a laboratory and <br /> analyzed for total petroleum hydrocarbons (TPH) as gasoline by EPA Method 8015 <br /> and benzene, toluene, ethylbenzene, and xylenes (BTEX) by EPA Method 8020. <br /> Samples collected from beneath the 10,000 gallon tank, 1,000 gallon tanks, and <br /> product piping were also analyzed for ethylene dibromide and total lead. In <br /> addition, samples collected from beneath the 1,000 gallon tanks and associated <br /> piping were analyzed for TPH as diesel by EPA Method 3550. <br /> Analytical results indicated the presence of TPH as gasoline at 91 ppm in the <br /> sample collected from beneath the south end of the 12,000 gallon tank while a <br /> sample collected from the south edge of the former pump island was found to <br /> contain 590 ppm TPH. No contaminants were indicated in the remaining samples. <br /> Table 1 in the attached consultant's report summarizes the analytical results. <br />