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EINUM i <br /> Consulting -Engineering* Remediation 10324 Placer Lane <br /> ^ Suite 200 <br /> {Sacramento,CA 95827 <br /> February 16, 1998 (916)362-7100 <br /> Project No. 8716002.100 FAX(916)362-8100 <br /> http://www.ensr.com <br /> Mr. Dave Deaner <br /> State Water Resources Control Board <br /> Division of Clean Water Programs, UST Cleanup Fund <br /> P.O. Box 944212 <br /> Sacramento, California 94244-2120 <br /> Subject: Petition For Case Closure Review <br /> Lopez Property, Site Code: 1930 <br /> 26500 Nowell Road <br /> Thornton, California <br /> Dear Mr. Deaner: <br /> ENSR, on behalf of Ms. Pamela Lopez, is submitting this petition for case closure review for the <br /> subject property located at 26500 Nowell Road, Thomton, Califomia (refer to Figure 'I -- Site Vicinity <br /> Map and Figure 2 — Site Map). Ms. Lopez believes that corrective actions regarding a 500-gallon <br /> gasoline underground storage tank (UST), removed in October 1989, have been satisfactorily <br /> implemented. <br /> Introduction <br /> Pursuant to Senate Bill 562, Ms. Lopez is requesting the Fund Manager to review her request for case <br /> closure. The request for case closure is based on the following criteria: <br /> • The source of contamination has been removed; <br /> • The site has been adequately characterized; <br /> • Impacted Soil at the site does not appear to be impacting the shallow ground water; and <br /> • The site presents no significant risk to human health or the environment <br /> In a letter dated January 3, 1997 the San Joaquin County, Environmental Health Division (SJCEHD) <br /> requested a corrective action plan for further evaluating the fate of contaminates in soil and ground <br /> water beneath the site (Attachment 3). <br /> Ms. Lopez submitted a Fugro proposal dated January 15, 1997, for additional ground water <br /> assessment to the Fund Manager for pre-approval (Attachment 4). The Fund Manager responded by <br /> sending Ms. Lopez a copy of the Cal/EPA letter dated January 3, 1997, regarding Senate Bill 562 <br /> (Attachment 5) <br /> Site History <br /> The subject site is a private residence located in a rural portion of Thornton, California. Ms. Lopez <br /> purchased the subject site in 1979 with an existing 500-gallon-capacity gasoline UST on the property_ <br /> According to the previous property owners, the UST had not been used for 10 to 15 years. <br /> 8716002.CLS: .. <br />