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1 ' LIMITED PHASE H ENVIRONMENTAL SITE ASSESSMENT WORK PLAN ' 600 E. Main Street Sidewalk along S.American Street Stockton, San Joaquin County ' 1.0 INTRODUCTION ' This Work Plan is for a limited Phase II Environmental Site Assessment (ESA) for a portion of the sidewalk along S. American Street immediately west of the property located at 600 E. Main Street, Stockton, California, shown in Figure 1. The Work Plan has been prepared at the request of Mr. Donald ' Geiger, Esquire, of Geiger, Rudquist, Nuss, Coon, Guerriero & Keen, LLP and was authorized by Bank of Stockton (client). The area requiring assessment is located in the sidewalk on the east side of S. American Street between E. Main Street to the north and E. Market Street to the south. The purpose of ' the site work is to investigate potential soil contamination near a suspected underground storage tank (UST) fill pipe and at attempt to verify the existence of the suspected UST. All work conducted by Condor will be under the supervision of a California registered geologist or engineer. This Work Plan ' includes project background information; a description of the field, laboratory, and reporting procedures proposed to conduct the work; and a project schedule. ' 2.0 PROJECT BACKGROUND Geocon Consultants, Inc., conducted a Phase I ESA for the six parcels located at 615 East Main Street (including 600 E. Main Street) in Stockton, California, in October 2000. The results of the ESA were ' provided in a report dated December 2000. The ESA discovered a possible UST located at 24 South American Street. A 500-gallon UST that was suspected to have previously contained waste oil was removed from 24 South American Street on May 4, 2001. In a letter dated June 12, 2001 Mr. Doug ' Wilson of the San Joaquin County Public Health Services Environmental Health Department(PHS/EHD) stated that the UST removal investigation was complete and that no further action was required at that time. ' Condor Earth Technologies, Inc. (Condor) was contracted to perform a Phase I ESA peer review for the six parcels (Figure 2) in June 2002 by Mr. Charles Holden of Monte Vista Entitlement. The purpose of ' the proposed scope of services is to assist the client in meeting the requirements of the CERCLA innocent landowner defense prior to acquisition of the parcels. During the site reconnaissance of the parcel located at 600 E. Main Street, the presence of a possible UST fill point was noted in the sidewalk along S. American Street, immediately west of Parcel 4. The parcel is located in downtown Stockton and ' currently consists of a vacant building(Parcel 4, Figure 2). 3.0 SCOPE OF WORK ' The purpose of the limited Phase II ESA is to investigate potential soil contamination near a suspected UST fill pipe located in the sidewalk along S. American Street immediately west of 600 E. Main Street ' and to attempt to verify the existence of the suspected UST at this location. One soil boring will be advanced to an approximate depth of seven feet below ground surface (bgs) at the suspected location of the UST. Four soil borings, two one each side of the suspected UST, will be advanced to an approximate �, 10 CONDOR