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I. NORCAL GEOPHYSICAL <br />CONSULTANTS, INC. <br />December 10, 2003 <br />Mr. Joe Zilles <br />Kleinfelder <br />2825 E. Myrtle Street <br />Stockton, CA 95205 <br />Subject: Geophysical Survey - UST search <br />20696 S. Manteca Road <br />Manteca, California <br />Dear Mr. Zilles: <br />This letter presents the findings of a geophysical investigation performed by NORCAL Geophysical <br />Consultants, Inc. at the subject location. The survey was conducted for Kleinfelder, Inc. on <br />November 19, 2003 by NORCAL Geophysicist, Dan Jones and Geophysical Technician, Travis <br />Black. Site coordination was provided by Mr. Joe Zilles with Kleinfelder. <br />PURPOSE <br />The subject site is a former fertilizer distribution facility. It is our understanding that there was at <br />least one underground storage tank (UST) on the property. It is unknown if any or all USTs were <br />removed. Therefore, the purpose of the geophysical survey was to acquire subsurface information <br />to aid in determining if USTs are present. <br />SITE DESCRIPTION <br />The site is located in Manteca, California on the east side of South Manteca Road, south of <br />Woodward Road. A map of the site is presented as the Geophysical Survey Map, Plate 1. The <br />investigation area was designated by Kleinfelder to include the portion of the site on the west side <br />of the workshop building (dashed line). There is a reinforced concrete apron along the west side of <br />the building, extending approximately 20 feet out from the wall. A concrete patch is located within <br />this apron, southwest of a hose bib and reel along the wall. There is also a storm drain drop inlet <br />west of the concrete apron. Metal debris is located at the north end of the apron. A majority of the <br />site is clear of surface obstructions and aside from the reinforced concrete apron, is asphalt-covered. <br />North of the site is an open dirt covered lot currently undergoing development. South of the area is <br />a residence separated from the site by a hedgerow. East of the area, Manteca Road trends north- <br />south. <br />1350 INDUSTRIAL AVENUE, SUITE A • PETALU MA, CA 94952 • TELEPHONE (707) 763-1312 • FAX (707) 762-5587 <br />www.norcalgeophysical.com