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Exxon#2 <br /> 1399 E.Yosemite,Manteca,California �I H P R 0 8 1993 <br /> ENVIR0N[ANTAL HEALTH <br /> PERMIT/SERVICES <br /> Regarding the "sheen" of floating liquid hydrocarbons {FLH) in well MW-1 B, there are <br /> several schools of thought as to whether or not a sheen of FLH should be bailed off and <br /> sampled because of concerns such data would be misrepresentative. If you request that <br /> the well be sampled, then we shall do so in the future, when it is possible to remove all <br /> evidence of a "sheen" by bailing and then purging and sampling. The second quarterly <br /> monitoring event is scheduled for Wednesday, April 7, 1993, and the well will be bailed <br /> and sampled per your instructions. <br /> Regarding a free product removal plan, we believe the vapor extraction system currently <br /> waiting for approval will eliminate any free product in MIN-1 B. If free product is present <br /> in the well during the next quarterly sampling, we will include a free product removal plan <br /> with the quarterly monitoring report. I <br /> Regarding notice of the vapor extraction test, I was not laware of the lack of notification. <br /> In the future, I will instruct our remediation group to notify your department of any and all <br /> site activities to take place at the subject site. <br /> Aegis appreciates the interest of the San Joaquin County Public Health Services and <br /> trusts this response meets your needs. If you have any questions, please call us at (916) <br /> 7$2-2110. <br /> Sincerely, <br /> AEGIS ENVIRONMENTAL, INC. <br /> r <br /> Owen M. Kittredge o�►� <br /> Staff Geologist +I <br /> La ra J. O e thal <br /> Project Geo ogist <br /> OMK/LJO/law <br /> Attachment <br /> a <br /> cc: Jerry Moore, Moore Petroleum, Inc. <br /> Central Valley Regional Water (duality Control Bdard <br /> i <br /> . I <br /> 90-098R.LTR -2- <br /> y <br /> 3 <br /> 1 <br />