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SunStar <br />Laboratories, Inc. <br />PROVIDING QUALITY ANALYTICAL SERVICES NATIONWIDE <br />25712 Commereentre 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 16:19 <br />DETECTIONS SUMMARY <br />Sample ID: <br />DSP 3/4 -3.5' <br />Laboratory ID: <br />T240742-01 <br />Reporting <br />Analyte <br />Result Limit <br />Units <br />Method <br />Notes <br />Lead <br />5.7 3.0 <br />mg/kg <br />EPA 6010b <br />Sample ID: <br />DSP 1/2 -3.5' <br />Laboratory ID: <br />T240742-02 <br />Reporting <br />Analyte <br />Result Limit <br />Units <br />Method <br />Notes <br />Lead <br />5.2 3.0 <br />mg/kg <br />EPA 6010b <br />Sample ID: <br />DSP 5/6 -3.5' <br />Laboratory ID: <br />T240742-03 <br />Reporting <br />Analyte <br />Result Limit <br />Units <br />Method <br />Notes <br />Lead <br />3.5 3.0 <br />mg/kg <br />EPA 6010b <br />Sample ID: <br />DSP 7/8 -3.5' <br />Laboratory ID: <br />T240742-04 <br />Reporting <br />Analyte <br />Result Limit <br />Units <br />Method <br />Notes <br />Lead <br />4.9 3.0 <br />mg/kg <br />EPA 6010b <br />m,p-Xylene <br />11 5.0 <br />ug/kg <br />EPA 8260B <br />Sample ID: <br />PL -1-3.5' <br />Laboratory ID: <br />T240742-05 <br />Reporting <br />Analyte <br />Result Limit <br />Units <br />Method <br />Notes <br />Lead <br />4.4 3.0 <br />mg/kg <br />EPA 6010b <br />Toluene <br />3.8 2.5 <br />ug/kg <br />EPA 8260B <br />Ethylbenzene <br />3.4 2.5 <br />ug/kg <br />EPA 8260B <br />m,p-Xylene <br />22 5.0 <br />ug/kg <br />EPA 8260B <br />o -Xylene <br />9.5 2.5 <br />ug/kg <br />EPA 8260B <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 3 of 32 <br />