COMPLIANCE INFO - Laserfiche WebLink

Home Browse Search

15 May 2000 AGE-NC Project No. 00-0719 Page 2 of 3 field observations and field screening using an organic vapor meter(OVM) equipped with a photo- ionization detector(PID: Thermo Environmental 580A, 10.0 eV, calibrated to isobutylene). Soil samples will be collected from the probe boring at five-foot intervals from ground surface to the total depth of the boring. Probe borings will be advanced using AGE's van-mounted Geoprobe 5400 direct-push probing unit equipped with 1.25-inch probing rods. The Geoprobe advances soil probe borings using a hydraulic or pneumatic hammer to drive soil and ground water sampling tools to specified depths. Soil samples will be collected using Geoprobe push-driven 2-inch diameter discrete and/or continuous core samplers fitted with four six-inch long brass sleeves or a two-foot long Teflon sleeve, respectively. Upon removal fi-om the sampler, the sample sleeve is separated with a clean soil knife. The exposed ends of the sleeve will be covered with Teflon sheets,capped and sealed with tape. Soil samples will be field screened for the presence of volatile organic compounds using an OVM. Following sample collection, each preserved sample sleeve will be labeled with the boring location, depth, time, date and sampler's initials. Appropriately sealed and labeled samples will be placed in a chilled container under ice and pending transportation to a DHS-certified laboratory. For the collection of grab ground water sample, a soil probe boring will be advanced to the top of the ground water table as identified by collection of a saturated soil sample. Once ground water has been encountered, a Geoprobe push-driven water sampling device will be advanced two to three feet into the water bearing zone. A grab ground water sample will be collected using a Geoprobe water sampling assembly fitted with a pre-cleaned one-inch 0.01 slotted temporary well screen. The ground water sample will be extracted by lowering a Teflon bailer through the hollow center of the push rods into the screen section. The sample will be collection in laboratory-supplied, 40-nil VOA vials containing 0.5-m1 of hydrochloric acid as sample preservative and 1-liter amber bottles. The labeled vials and bottles will be placed in a chilled container under ice pending transportation to a DHS- certified laboratory. LABORATORY ANALYSIS Selected soil and/or ground water samples will be submitted to a DHS-certified laboratory and analyzed for the following: • Total petroleum hydrocarbons quantified as gasoline (TPH-g) and diesel (TPH-d) in accordance with EPA Method 8015 Modified; Advanced CeoEnvironmental,Inc.