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WATER SAMPLEANALYTICAL RESULTS <br /> • The only compound identified in sample 17950-INF-10 29 O1 (the pre- <br /> treated water sample) was MTBE at 54 ppb <br /> • The only compound identified in sample 17950-AS-11 07 01 (after <br /> treatment by the air-stripper) was MTBE at 41 ppb <br /> • No compounds were identified in sample 17950-GAC 1-1 1 07 01, which <br /> was collected after carbon canister number 1 This proves that the <br /> treatment system is working as designed <br /> REMOVAL OF ALTERNATIVE WATER STTPI!I, <br /> The Aeropure Water alternative water supply was removed from the <br /> property in the middle of November, 2001 <br /> QUARTERLY OPERATION AND MAINTENANCE, SAMPLING AND <br /> REPORTI <br /> ASE is currently under contract to perform quarterly operation and <br /> maintenance (4&M) activities and collect samples and prepare a report <br /> every 3 months to determine the effectivenes of the treatment system <br /> ASE will visa the site periodically to check the performance of the system, <br /> backflush the carbon canisters, if necessary, and repair any problems that <br /> arise <br /> ASE will also collect influent, after air-stripper, and after carbon canister <br /> water samples every three months for analysis of TPH-G, BTEX, the five <br /> fuel oxygenates, and lead scavengers by EPA Method 8260B ASE will <br /> prepare and issue a report in the following month that details the <br /> quarter's activities Should it be determined that hydrocarbons are <br /> breaking-through the first carbon canister, ASE will replace that canister <br /> 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 /> - 3 - <br />