ARCHIVED REPORTS_XR0008170 - Laserfiche WebLink

Home Browse Search

r17 March 1996 AGE-NC Project No 95-0128 Page 3 of 8 ' 2 2 2 GRAB GROUND WATER SAMPLE COLLECTION At the request of Mr Ron Rowe of the PHS-EHD, a grab ground water sample was collected from ' boring B 10 to determine if free product was present After drilling, ground water was allowed to enter the auger at depth of forty feet and a water sample was ietrieved using a disposable plastic bailer' Approximately 0 3 inches of free product was observed in the grab ground water sample ' collected from boring B10 Aftei retrieval, the sample was carefully transferred to 40-m1 EPA approved VOA vials containing 0 5 nil hydrochloric acid (for sample preservation) and 1-liter amber bottles The sample was placed in a chilled container and transported under chain-of-custody to MAI for analysis The grab ground ' water sample was anlayzed for TPH-g, TPH-d, BTE&X and MTBE in accordance with EPA methods 8015m and 602 2 2 3 SOIL DESCRIP I ION AND LOGGING . Soil was extruded from the second brass sleeve (or the continuous cote sampler) and screened foi the presence of OVs using a PID, PID readings were recorded on boring logs Fhe soil was then desciibed in accordance with the Unified Soil Classification System (see Boling Logs, Appendix r A) 2 2 4 WELL COMPLETION Boiings B7, B8, B9 and B11 were completed as ground water monitoring wells MW-4, MW-5, MW-6 and MW-7, respectively Each well was completed rising 2-inch diametei schedule 40 PVC casing with 0 02-inch slotted screen from;approximately 25 to 50 feet bsg A filter pack was installed using #2 Lonestar sand from 23 to 50 feet Bentonite chips were used to make a two-foot plug and the remaining annular space was backfilled to the surface with Portland cement A traffic-rated well box (8- inch diameter) was installed over each well, in accordance with County regulaiions Hs-bunt monitoring well diagrams are depicted in Appendix. B 2 3 GROUND WATER MONITORING AND SAMPLING 2 3 1 MONITORING WELL PURGE PROCEDURES, SEPTEMBER 1996 *1 On 10 September 1996, a Solinst water level meter was used to measure the depth to ground water I