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SunStar <br />Laboratories, Inc. <br />PROVIDING QUALITY ANALYTICAL SERVICES NATIONWIDE <br />25712 Commercentre Drive <br />Lake Forest, California 92630 <br />949.297.5020 Phone <br />949.297.5027 Fax <br />Aptim - Concord Project: Safeway Fuel Station No. 1769, Stockton, CA <br />4005 Port Chicago Hwy, Suite 200 Project Number: 631036009.00321320 Reported: <br />Concord CA, 94520 Project Manager: Scott Bittinger 02/15/24 16:16 <br />SWC -1/2/3/4 <br />T240741-01 (Soil) <br />Reporting <br />Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Note; <br />SunStar Laboratories, Inc. <br />Extractable Petroleum Hydrocarbons by 8015B <br />Diesel Range Hydrocarbons ND 100 mg/kg 10 24BO250 02/14/24 02/15/24 EPA 8015B R-01 <br />Surrogate: p-Terphenyl 121 % 65-135 " "11" R-01 <br />Metals by EPA 6010B <br />Lead 6.7 3.0 mg/kg 1 24BO241 02/14/24 02/15/24 EPA 6010b <br />Volatile Or¢anic Compounds by EPA Method 8260B <br />Benzene <br />ND <br />2.5 ug/kg 1 24BO253 02/14/24 02/15/24 EPA 8260B <br />Toluene <br />ND <br />2.5 <br />Ethylbenzene <br />ND <br />2.5 <br />m,p-Xylene <br />ND <br />5.0 <br />o -Xylene <br />ND <br />2.5 <br />Tert-amyl methyl ether <br />ND <br />10 <br />Tert-butyl alcohol <br />ND <br />25 <br />Di -isopropyl ether <br />ND <br />10 <br />Ethyl tert-butyl ether <br />ND <br />10 <br />Methyl tert-butyl ether <br />ND <br />10 <br />TPH-GRO <br />ND <br />250 <br />Surrogate: Toluene -d8 95.9% 83.2-113 <br />Surrogate: 4-Bromofluorobenzene 104% 82.9-116 <br />Surrogate: Dibromofduoromethane 84.7% 80.4-132 " <br />SunStar Laboratories, Inc. <br />Joann Marroquin, Director of Operations <br />The results in this report apply to the samples analyzed in accordance with the chain of <br />custody document. This analytical report must be reproduced in its entirety. <br />Page 4 of 12 <br />