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Local county public works and environmental health departments consider the well logs <br /> "proprietary" information and would not release this information. <br /> The three wells are interconnected by a pipeline system. All of the system can be chlorinated. <br /> Periodically the system is chlorinated. Due to construction activities within the system, it is <br /> _ currently being chlorinated to provide a residual chlorine concentration of 1 to 2 ppm and 0.50 <br /> to 0.75 ppm at the most distant outlet in the system. Tile decision to chlorinate is based on <br /> bacterial counts in the water as determined by periodic testing. The water is generally tested <br /> every three years for volatile organic compounds (VOC) which include chloroform. Mr. Rall <br /> stated that chloroform presence has not been detected in the wells. The Fairoaks wells are <br /> reported to be scheduled for VOC testing in September 1995. The most recent test data on file <br /> with the local Department of Environmental Health (Maurland Manor -07/25/91, Fairoaks #/3 <br /> (also known as ##1) and Fairoaks #/2 - 07/13/92) indicates that chloroform was not detected any <br /> of these three community wells. Copies of the laboratory reports are enclosed in Appendix C <br /> of this addendum. It should be noted that the samples are "source" samples taken from each <br /> well before chlorination. <br /> All of the residences north of MW-7 are on private septic systems. Chlorinated compounds as <br /> precursors of chloroform and other TIlMs may be discharged to the soil from septic system <br /> leach lines. These anthropogenic sources are considered to be potential sources of <br /> r- trilia]omethane compounds which can migrate to the ground water. <br /> This addendum to the Revised Work Plan and Evaluation of Alternatives for Containment of The <br /> Chloroform Plume in Groundwater has been prepared solely for the use of Triple E Produce, <br /> inc., and any questions regarding the content of this document should be addressed to Mr. Nate <br /> Esformes or Mr. Torn Guido, P.O. Box 239, Tracy, CA 95378. <br /> Respectfully submitted, <br /> Robert C. Dixon, CPAg <br /> Project Manager <br /> /assessment of Contamination <br /> /Addendum to Revised Work Plan <br /> Triple R Produce Corp.,Tracy <br /> r <br /> 5 Ne�-w <br /> ti CONDOR <br />