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Advanced GeoEnvironmental, Inc. =--0.- 1 21 May 2002 AGE-NC Project No. 02-0930 Mr. Steven Teel Construction Testing & Engineering, Incorporated 2414 Vineyard Avenue - Suite G Escondido, CA 92029 Subject: Phase II Site Assessment Report Proposed El Dorado Apartments Development Stockton, California Dear Mr. Teel: At your request,Advanced Geo Environmental, Inc..(AGE) has prepared the enclosed Phase II Site Assessment Report for the proposed El Dorado Apartments Development project located on South El Dorado Street, APNs 167-070-02 and -03, in Stockton, California. The location of the site is illustrated on Figure 1. A plan of the site is illustrated on Figure 2. DRILLING AND SAMPLE COLLECTION On 10 May 2002, five soil probe borings (B-1 through B-5) were advanced at the site as part of the assessment activities. The field work was conducted as outlined in the Construction Testing & Engineering, Inc. (CTE)-prepared,.Workplan For Soil Investigation, dated 18 April 2002. Soil probe borings B-1 through B-5 were advanced utilizing a truck-mounted Geoprobe 5400 equipped with 1.125-inch diameter probe rods using "direct push"'technology. Each probe boring was advanced vertically to depths of 20 feet below surface grade(bgs) for collection of soil samples. Soil samples were collected at 5-foot intervals to total depth in each boring. Each sample was collected utilizing a 1..125-inch Geoprobe soil sampling assembly loaded with four six-inch brass sleeves. After collection, the ends of the second brass sleeve were covered with Teflon sheets, tcapped and sealed with tape. Each sample sleeve was labeled with soil probe boring location, depth, time, date and sampler's initials and then placed in a chilled container. The samples were then shipped under chain-of-custody to a California Department of Health Services (DHS)-certified tanalytical laboratory for analysis. 837 Shaw Road, Stockton,California 95215 Telephone (209) 467-1006 FAX(209) 467-1 113