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Environmental <br /> Science & <br /> Engineering,Inc. /we' <br /> A CILCORP Company <br /> January 30, 9991 <br /> Project No. 6-90-5030 <br /> Mr. Harlin Knoll ,. <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> P.O. Box 2009 <br /> Stockton, California, 95201 <br /> SUBJECT: Additional Work at AT&T Lodi Facility, 110 West Turner Road, Lodi, San <br /> Joaquin County, California <br /> Dear Mr. Knoll: <br /> This letter documents our phone conversation of January 29, 1991 regarding the site <br /> assessment for the subject facility. ESE will perform a second round of sampling at the site <br /> as soon as possible to verify the ground-water analytical results from the November 1990 <br /> sampling. Three monitoring wells at the subject facility will be purged and sampled <br /> according to the procedures outlined in the original workplan for the project, prepared by <br /> ESE and submitted to the County on September 17, 1991. The only deviation from the <br /> proposed procedures will be to use disposable, precleaned bailers for sampling. <br /> I verified the sequence of sampling for the November 1990 sampling event at the subject <br /> site with Ms. Shannon O'Hare of ESE who performed the work. Ms. O'Hare stated that <br /> the bailer rinseate sample was taken prior to sampling any of the wells. Samples from the <br /> wells were placed in either amber 1-liter bottles or 40-ml VOA bottles. The amber bottles <br /> had a distinct label designation versus the VOA bottles. <br /> We are scheduling the second round of sampling for next week. We will call you 48 hours <br /> in advance. Please contact Sue Wickham at (415) 685-4053 with any questions. <br /> Sit-,c�-rely, <br /> ENVIRONMENTAL SCIENCE & ENGINEERING, INC. <br /> Susan S. Wickham, RG 3851 <br /> Staff Hydrogeologist <br /> SSW:gm <br /> F.\PR01EC1%\-5M0\LM191 <br /> 4090 Nelson Avenue,Suite j Concord,CA 94520 Phone(4]5)685-4053 Fax(415)685-5323 <br />