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Water Boards <br /><IN 'NATTKE,' RODRIGUEZ <br />SELIM1AFIT F0/4 <br />VivIliOuklEPITAt PROYEGli01, <br />einLIPGRNIA <br />t.1 EprAIIND G. arrow; JP. <br />GovERNOI <br />Central Valley Regional Water Quality Control Board <br />25 October 2017 <br />Charles Skobrak <br />9947 E. Highway 26 <br />Stockton, CA 95215 <br />RECEIVED <br />JAN 2 9 2018 <br />LNymoNim.:NTA I. IR:AI:HI <br />DEPA IZTNIENT <br />LARRY'S AUTO, 308 NORTH GRANT STREET, STOCKTON, SAN JOAQUIN COUNTY, <br />CASE# 390170 <br />Central Valley Regional Water Quality Control Board (Central Valley Water Board) staff <br />reviewed the Site Assessment Report - Third Quarter 2017 (Report) dated 10 October 2017, <br />submitted by Advanced GeoEnvironmental Inc. (AGE) for the Larry's Auto property at 308 N. <br />Grant Street in Stockton (Site). <br />In the Report, AGE detailed the advancement of four (4) shallow soil borings in the northwest <br />portion of the Site, in the vicinity of former Tanks A & D. As AGE did not present the <br />analytical results in table format in the Report, the results are summarized in the Tables 1 <br />and 2 below. <br />Table 1 - Petroleum Hydrocarbons Results <br />Sample TPHg <br />(mg/kg) <br />TPHd <br />(mg/kg) <br />O&G1 <br />(mg/kg) <br />Benzene <br />(mg/kg) <br />Ethyl- <br />benzene <br />(mg/kg) <br />MTBE <br />(mg/kg) <br />Naph- <br />thalene <br />(mg/kg) <br />Other <br />VOCs <br />(mg/kg) <br />Bis (2- <br />ethylhexly) <br />Phthalate <br />(mg/kg) <br />Other <br />SVOCs <br />(mg/kg) <br />PCBs <br />(mg/kg) <br />B6-5 <1.0 <1.0 53 <0.005 <0.005 <0.005 <0.005 All ND <0.25 All ND All ND <br />B6-10 <1.0 <1.0 <50 <0.005 <0.005 <0.005 <0.005 All ND <0.25 All ND All ND <br />B7-5 <1.0 <1.0 <50 <0.005 <0.005 <0.005 <0.005 All ND <0.25 All ND All ND <br />B7-10 <1.0 <1.0 <50 <0.005 <0.005 <0.005 <0.005 All ND <0.25 All ND All ND <br />B8-5 <1.0 2.3 160 <0.005 <0.005 <0.005 <0.005 All ND <0.25 All ND All ND <br />B8-10 <1.0 <1.0 <50 <0.005 <0.005 <0.005 <0.005 All ND 0.38 All ND All ND <br />B9-5 <1.0 1.3 80 <0.005 <0.005 <0.005 <0.005 All ND <0.25 All ND All ND <br />B9-10 <1.0 <1.0 <50 <0.005 <0.005 <0.005 <0.005 All ND <0.25 All ND <br />--- <br />All ND <br />TPHg=tota petroleum hydrocarbons as gasoline; TPHd=TPH as diesel; O&Go11 and grease; MTBE=methy tert butylether, I Pbutyltefl <br />alcohol; VOCs=volatile organic compounds; SVOCs=serni-VOCs; PCBs=polychlorinated biphenyls; ft bgs=feet below ground surface; <br />mg/kg=milligrams per kilogram; <=indicates concentration was below the laboratory reporting limit; ND=not detected above laboratory reporting <br />limit <br />I =Reported as hexane extractable material (HEM) <br />KARL E. LONGLEY ScD, P.E., CHAIR I PAMELA C_ CREEDON P.O., BCEE, ExECUTIvE OFFICER <br />11020 Sun Center Drive 5200. Rancho Cordova. CA 95670 I www.welerboards.ca.00vicentralvalloy <br />FIEGT0LCO PAPEri