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22 September 2000 <br /> AGE-NC Project No. 00-0753 <br /> Page 2 of 5 <br /> 2.0. PROCEDURES <br /> On 30 August 2000, six soil probe borings(B-1 through B-6)were advanced at the site as part of <br /> assessment activities related to an unauthorized release ofpetroleum hydrocarbons from surrounding <br /> sites. The field work was conducted as outlined in the Preliminary Phase II Site Assessment Work <br /> Plan dated 18 August 2000. <br /> 2.1. DRILLING ACTIVITIES <br /> Soil probe borings B-1 through B-6 were advanced utilizing a van-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. Soil probe borings B-1 through B-6 were advanced vertically to a <br /> depth of 15 feet bsg. Ground water was encountered at an approximate depth of 10 feet bsg in the <br /> borings. <br /> 2.1.1. Soil Sample Collection <br /> Discrete soil samples were collected at 5-foot intervals,beginning at 5 feet bsg,to total depth of each <br /> boring. Soil samples were collected using a Geoprobe soil sampling assembly loaded with four pre- <br /> cleaned 1.125-inch by 6-inch brass sleeves. Soil samples were preserved by covering both ends of <br /> the brass sleeve with Teflon sheets, capping, and sealing with tape. Each sample sleeve was labeled <br /> with soil probe boring location, depth, time, date and sampler's initials. The samples were then <br /> stored in a chilled container. <br /> 2.1.2. Ground Water Sample Collection <br /> Grab ground water samples were collected from probe borings B-1 through B-6 using a temporary <br /> PVC screen.The probe rods were advanced to a depth approximately four feet below the water table. <br /> The hollow steel rods were then pulled out, and a screened casing was inserted into the saturated <br /> zone, Ground water was allowed to enter the casing, and samples were retrieved using a modified <br /> PVC tubing bailer. Sufficient sample was collected from boring B-1 through B-6 to fill one 1-liter <br /> amber bottle and three 40-n-�EPA-approved VOA vials containing 0.5 ml 18% hydrochloric acid <br /> as a preservative. Ground water sample containers were labeled with probe boring designation,date, <br /> time, and samplers initials. The samples were then stored in a chilled container. <br /> Advanced GeuBnvironmental,Inc. <br /> � 'd LTOCOC860z qJagie uenR dLZ =CO Oz Ge des <br />