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' 0 9 <br /> ENVIRONMENTAL AUDIT, INC <br /> 1000-A ORTEGA WAY • PIACENTIA, CA 92670-7125 <br /> ' 714/632-8521 • FAX: 714/632-6754 <br /> ' May 20, 1991 <br /> Project No. 1232 <br /> Ms. Eleanor Ratliff, REHS <br /> ' Environmental Health Specialist <br /> San Joaquin County <br /> Public Health Services <br /> Environmental Health Division <br /> P.O. Box 2009 a s .� <br /> 1601 East Hazelton Avenue <br /> Stockton, CA 95201 MAY 2 3 fg90 <br /> SUBJECT: PHASE II SITE ASSESSMENT R0 0INM 'i`I I`fit' m,EALTfA <br /> 5400 pacific Avenue, Stockton�RMIT/ ERVICES <br /> ' (Site Code 2163) <br /> Dear Ms. Ratliff: <br /> Enclosed herewith for your review are two (2) copies of o r <br /> report entitled "Phase II Site Assessment, Montgomery Ward Auto <br /> Service Center, 5400 Pacific Avenue, Stockton, California" , <br /> dated May 17, 1991. <br /> The results of the investigation show that problematic <br /> ' concentrations of contaminants were detected only in soil <br /> samples collected from boring B-6 between approximately 16 a <br /> nd <br /> 45 feet below ground surface (bgs) . Total petroleum <br /> ' hydrocarbons (TPH) ranging from 610 to 5,400 parts per million <br /> (ppm) , toluene ranging from 1.5 to 250 ppm, xylenes ranging from <br /> 34 to 860 ppm, and ethylbenzene ranging from 9 . 9 to 170 ppm, <br /> were detected in all seven samples analytically tested between <br /> ' these depths. Benzene and organic lead were not detected in any <br /> of these samples, and the total lead concentrations ranged from <br /> 10.9 to 38. 1 ppm. The soluble lead concentration in the sam le <br /> ' with the highest total lead concentration was 0. 96 ppm. The <br /> total and soluble lead concentrations are well below the <br /> standards contained in Title 22, California Code of Regulations. <br /> ' As you are aware, during drilling and sampling activitie <br /> associated with boring B-6, a strong solvent odor was <br /> encountered. No gasoline odors were noted in the field. Th <br /> analytical testing results are inconclusive as to the source s) <br /> of the detected compounds. <br /> ' PLANNING,ENVIRONMENTAL ANALYSES AND <br /> HAZARDOUS SUBSTANCES MANAGEMENT AND REMEDIATION <br />