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L <br /> Geological Audit Services, Inc. <br /> g <br /> == 1803 W. March Lane, Suite A • Stockton, CA 95207 • (209) 956-0264 • FAX (209) 956-0700 <br /> ENLAW <br /> sw <br /> } y 13 November 1991 <br /> Jim Hoblitzell Nov I <br /> Falcon Energy - ,wPONMENTAL t' Lr'; '`r <br /> P. O. Box 1257 <br /> Stockton, CA 95201 <br /> SUBJECT: LABORATORY ANALYSIS OF SOIL SAMPLES <br /> 3430 S. El Dorado St. (Western Lift Project) <br /> Dear Mr. Hoblitzell: <br /> On November 1, 1991, a third phase of overexcavation was performed <br /> at the Western Lift Project site on S. E1 Dorado St. Previous soil <br /> sampling indicated that contamination was still present in portions <br /> of the excavation. Approval was obtained from Harlen Knoll of the <br /> San Joaquin County Environmental Health Division for this third <br /> phase of overexcavation. <br /> The excavation was enlarged by 8 to 10 feet in the north and south <br /> directions and to a maximum depth of 34 feet (Previous depth was 29 <br /> feet) . Previous soil sampling indicated no contamination remained <br /> in the east and west directions, therefore no additional samples <br /> were collected in those areas. <br /> A total of three samples were collected after this most recent <br /> phase of excavation was completed. Sample WL-S30 was collected <br /> from the south wall , 30 feet below surface grade; sample WL-N30 was <br /> collected from the north wall , 30 feet below surface grade; sample <br /> WL--B34 was collected from the bottom center of the excavation, 34 <br /> feet below surface grade. The samples were analyzed by FGL <br /> Laboratories for TPH-g, TPH-d and BTEX. The results were <br /> transmitted on November 5 , 1991 . All analysis were reported as <br /> non-detected, indicating no further remediation will be necessary <br /> at the site. <br /> If you have any questions or comments, please contact me at our <br /> Stockton office. <br /> Sincerely, <br /> GEOLOGICAL AUDIT SERVICES, INC. <br /> &__/ <br /> Bob Marty <br /> Staff Geologist <br /> Envronmental Services • Hydrogeology •Geotechnicai Services <br />