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22 May 2000 AGE-NC Project No. 00-0704 Page 2 of 7 on the subject property and the general area of use had been documented by AGE as part of a Phase I historical research of the subject property. 3.0. PROCEDURES Tasks and procedures for this investigation were completed by AGE personnel,or under the direction of AGE personnel, and were conducted under the supervision of a California Registered Geologist, and in accordance with the PHS-EHD approved Phase II SiteAssessment WorkPlan dated 15 March 2000, prepared by AGE. 3.1. ADVANCEMENT OF SOIL PROBE BORINGS Soil probe borings were advanced using a van-mounted Geoprobe 5400 direct-push probing unit equipped with 1.25-inch probing rods. The Geoprobe advances soil probe borings using a hydraulic hammer to drive soil and ground water sampling tools to specified depths. On 21, 22, and 23 March 2000, AGE advanced a total of nineteen soil probe borings and four hand-auger borings at the site. The five areas were investigated: a storm drain basin, a former paint spray booth, a former steam cleaning area, and a former UST and dispenser island area on the Graylift site, and a former gasoline and service station (Shell) area located at the southeast corner of the property. Hand-auger borings HA-1, HA-2, HA-3, HA-4, and probe boring B12 were advanced near the drainage pond area. Probe borings B1 and B8 were advanced within the former Graylift UST excavation and dispenser island area to depths as great as 50 feet below surface grade (bsg) and 15 feet bsg,respectively.Probe borings B9 and B 10 were advanced near the former steam cleaning area (drain and 3-stage separator)and the former paint spray booth area,respectively. Probe borings B2, B3,B4 and B5 were advanced in the area of the former Shell service station.The remaining borings were advanced throughout the property.Field screening indicated no petroleum hydrocarbon-impact to soil in the latter borings (B2, B6, B7, B11 through B19), therefore samples were not sent to the laboratory for analysis. All sample locations are presented on Figure 2. 3.2. SOIL AND GRAB GROUND WATER SAMPLE COLLECTION Discrete soil samples were collected using the Geoprobe push-driven 2-inch sampler fitted with four six-inch long brass sleeves at 5-foot intervals,beginning at 5 feet bsg from most soil borings. Soil samples were preserved by covering both ends of the second brass sleeve with Teflon sheets,capping Advanced GeoEnviron mental,Inc.