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. MTBE will be found in the water stieam between the first and Second <br /> canistei Each caabon canister has been fitted with a sample port which <br /> allows a sample to be collected and analyzed at prescribed inter N als to <br /> determine at what point MTBE has broken through the first canister ASE <br /> will replace the canisters when they no longer ate effective at removing <br /> the MTBE from the water The system has been designed to always have <br /> an adequate supply of activated caabon in one vessel to treat a normal <br /> volume of water while the other canister is spent and in the process of <br /> being replaced Currently, the schedule for sample collection and analysts <br /> is quarteily (every 3 months) <br /> WATER SAMPLE COLLECTION AND ANAL YS S <br /> On October 30, 2001, a water sample, labeled 17904 Airport Way, was <br /> collected from the well during routine quarterly sample collection <br /> activities The sample was placed within an ice chest containing vet ice <br /> while transported to Kiff Analytical of Davis, California (ELAP# 2236) <br /> under 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 fig e fuel <br /> oxygenates, and lead scavengers by EPA Method 8260B The sample <br /> contained 5 parts per billion (ppb) MTBE <br /> After the system was installed, started and operating in mid-December, <br /> 2001, ASE collected a water sample after treatment by the first carbon <br /> canister This sample was labeled 17904-GAC1-12 13 01 The sample was <br /> placed within an ice chest containing wet ice while transported to Kiff <br /> under chain of custody procedures The sample was analyzed for TPH-G, <br /> BTEX, five fuel oxygenates, and lead scavengers by EPA Method 8260B <br /> The sample did not contain MTBE or any of the compounds analyzed A <br /> copy of the certified analytical reports are attached in Appendix B <br /> WATER SAMPLE ANALYTICAL RESULTS <br /> • The only compound identified in sample 17904 Airport Way (the pre- <br /> treated water sample) was MTBE at 5 ppb <br /> • No compounds were identified in sample 17904-GAC 1-12 13 01 , which <br /> was collected aftei carbon canister number I This proves that the <br /> treatment system is working as designed, and that no MTBE or any <br /> . other compounds analyzed are entering the house's plumbing system <br /> - 2- <br />