Laserfiche WebLink
KAPREALIANl RING <br /> JI0ca" R 1 D <br /> Eq��_� t <br /> NOV 17 02 � KEI-P91-0202 .QR3 <br /> k`�VkRDNNIENI,q k-i�' I! November 6, 1992 <br /> OER kt>+'i k�k�/'S kFz�' <br /> Unocal Corporation <br /> 2000 Crow Canyon Place, Suite 400 <br /> P.O. Box 5155 <br /> San Ramon, California 94583 <br /> Attention: Mr. David DeWitt <br /> RE: Quarterly Report <br /> Unocal Service Station #6015 <br /> 601 E. Kettleman Lane <br /> Lodi, California <br /> Dear Mr. DeWitt: <br /> This report presents the results of the most recent quarter of <br /> monitoring and sampling of the monitoring wells at the referenced <br /> site by Kaprealian Engineering, Inc. (KEI) , per KEI ' s proposal <br /> (KEI-P91-0202 .P3) dated October 16, 1991, and as modified in KEI ' s <br /> report (KEI-P91-0202 .R6) dated January 23 , 1992 . The wells are <br /> currently monitored monthly and sampled on a quarterly basis. This <br /> report covers the work performed by KEI from August through October <br /> of 1992 . <br /> BACKGROUND <br /> The subject site contains a Unocal service station facility. Three <br /> underground fuel storage tanks, one waste oil tank, and the product <br /> piping were removed from the site in February of 1991 during tank <br /> replacement activities. The fuel tank pit was subsequently <br /> overexcavated in order to remove contaminated soil. Nine monitor- <br /> ing wells and two exploratory borings have been installed at the <br /> site. <br /> A site description, detailed background information including a <br /> summary of all of the soil and ground water subsurface investiga- <br /> tion/remediation work conducted to date, site hydrogeologic <br /> conditions, and tables that summarize all of the soil and ground <br /> water sample analytical results are presented in KEI ' s quarterly <br /> report (KEI-P91-0202 .QR1) dated May 4, 1992. <br /> RECENT FIELD ACTIVITIES <br /> The nine wells (MW1 through MW9) were monitored three times and <br /> were sampled once during the quarter. During monitoring, the wells <br /> were checked for depth to water and the presence of free product. <br /> Prior to sampling, the wells were also checked for the presence of <br /> a sheen. No free product or sheen was noted in any of the wells <br /> 2401 Stanwell Drive,Suite 400 <br /> concord,California 94520 <br /> Tel:510,602.5100 Fax:510.687.0602 <br />