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v <br /> 12 August 2003 <br /> AGE-NC Project No. 03-1035 <br /> Page 3 of 7 <br /> V <br /> 3.0. SCOPE OF WORK <br /> The initial scope of work included advancement of two probe borings to collect soil samples for <br /> laboratory analysis. As part of site assessment, the former UST area was re-excavated to between <br /> 8.5 and 9 feet bsg to remove concrete debris and trash that had accumulated in the partially back- <br /> filled UST pit. <br /> The scope of work was subsequently expanded to include an additional soil boring to collect soil <br /> and grab ground water samples after minor amounts of petroleum-hydrocarbon contaminants were <br /> detected in one of the initial soil borings (B-1). <br /> 4.0. PROCEDURES <br /> On 27 May, 29 May, 02 June, and 20 June 2003, three soil probe borings (B-1 through B-3)were <br /> advanced at the subject site as part of assessment activities. The field work was conducted as <br /> outlined in the AGE-prepared Phase II Site Assessment Work Plan and Additional Site Assessment <br /> Work Plan, dated 15 May and 17 June 2003,respectively. <br /> 4.1. DRILLING ACTIVITIES <br /> Soil probe borings B-1 through B-3 were advanced utilizing a truck-mounted Geoprobe 5400, <br /> equipped with 1.125-inch diameter probe rods with an attached 2.15-inch diameter soil sampler, <br /> using"direct push"technology.Borings B-1 and B-2 were advanced vertically to a depth of 25 feet <br /> below surface grade (bsg) for collection of soil samples; boring B-3 was advanced vertically to 50 <br /> feet bsg to collect soil and grab ground water samples.The boring logs are provided in Appendix A. <br /> 4.2. SOIL SAMPLE COLLECTION AND ANALYSIS <br /> Soil samples were collected at 5-foot intervals beginning at 4 feet bsg to the total depth in borings <br /> B 1 and B2.Based on the initial findings,AGE consulted with the SJCEHD and determined that an <br /> additional boring was necessary near boring B-1. AGE advanced soil boring B-3 immediately <br /> adjacent to boring B-1. Confirmation soil samples (B3-15 and B3-25) were collected at the same <br /> depth as impacted samples B1-14 and B1-24 while additional soil samples (B3-30,B3-45 and B3- <br /> 4.0 50) were collected beneath the deepest impacted sample (B1-24) from boring B-1. A grab ground <br /> water sample(133)was also collected to test water quality(see section 3.3. below). <br /> —' Advanced GeoEnvi ro n mental,Inc. <br />