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. The sample was placed within an ice chest containing wet ice while <br /> transported to Kiff Analytical of Davis, California (ELAP# 2236) under <br /> chain of custody procedures The sample was analyzed for total <br /> petroleum hydrocarbons as gasoline (TPH-G), benzene, toluene, <br /> ethylbenzene, and xylenes (collectively known as BTEX), the five fuel <br /> oxygenates, and lead scavengers by EPA Method 8260B A copy of the <br /> analytical report is attached in Appendix A <br /> The analytical results indicated concentrations of "MTBE only" in parts per <br /> billion (ppb) as follows <br /> SamiDle Id. Result (in nnh) <br /> 17926 Airport Way 5 0 <br /> No other compounds were identified in this water sample <br /> QUARTERLY OPFRATION... AND MAINTENANCE, SAMPLING ANT) <br /> REPORTING <br /> ASE is currently under contract to perform quarterly operation a n d <br /> • maintenance (O&M) activities and collect samples and prepare a report <br /> every 3 months to determine the effectiveness of the treatment system <br /> ASE will continue to visit the site periodically to check the performance of <br /> the system, backflush the carbon canisters, if necessary, and repair any <br /> problems that arise <br /> ASE will continue to collect influent (pre-treatment) and after carbon <br /> canister (post-treatment) water samples every three months for analysis <br /> of TPH-G, BTEX, the five fuel oxygenates, and lead scavengers by EPA <br /> Method 8260B ASE will prepare and issue a report in the following <br /> month that details the quarter's activities Should it be determined that <br /> hydrocarbons are breaking-through the first carbon canister, ASE will <br /> replace that canister with a new one <br /> A copy of the quarterly report will go to the property owner, tenants, o u r <br /> client, and the appropriate regulatory agencies <br /> -2- <br />