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ADVANCED GEOENVIRONMENTAL, INC <br /> ' FIELD PROCEDURES FOR <br /> GROUNDWATER MONITORING AND SAMPLING <br /> shipped via Golden State Overnight, an overnight delivery service Laboratory notes on the chain-of- <br /> custody <br /> hain-ofcustody form indicate that the samples were received iced, in good condition and with no head space <br /> MAI analyzed the samples for <br /> Total petroleum gasoline TPH- in accordance with EPA <br /> • pe oleum hydrocarbons quantified as ga o ( g) <br /> Methods 5030 and 8015m, <br /> • Volatile aromatic hydrocarbons - benzene, toluene, ethylbenzene and total xylenes (BTEX) <br /> and methyl tertiary-butyl ether(MTBE) in accordance with EPA Method 60218020, and for <br /> ' • Fuel oxygenates - di-isopropyl ether (DIPE), ethyl tertiary-butyl ether (ETBE), MTBE, <br /> tertiary-amyl methyl ether(TAME), tertiary butanol (TBA), ethylene dibromide (EDB) and <br /> ' 1,2-dichlo ro ethane (1,2-DCA) in accordance with EPA Method 8260 Modified <br /> The laboratory report(MAI Laboratory ID 61888 -61905) and chain-of-custody forms are included <br /> in Appendix B <br /> Prior to sample collection, all sampling tools used for sample collection were thoroughly washed <br /> with a solution of Alconox and rinsed with clean water <br /> ' LIMITATIONS <br /> ' AGE's professional services were performed using that degree of care and skill ordinarily exercised <br /> by environmental consultants practicing in this or similar localities No other warranty, expressed <br /> or implied, is made as to the information contained in this report <br /> The opportunity to provide this service is greatly appreciated If you have any questions or <br /> comments, please contact our office at (209) 467-1006 <br /> 1 <br /> Sincerely, <br /> Advanced GeoEnvironmtental, Inc. 1;416�w - 9Z N -)83 <br /> V <br /> Obert E Marty Nuel C Henderson, Jr + , <br /> Project Geologist/Director o Operations Senior Project Geologist <br /> California Registered Geologist No 5837 <br /> Advanced GeoEnvironment*Inc <br />