ARCHIVED REPORTS_XR0005989 - Laserfiche WebLink

Home Browse Search

U S Environmental Protection Agency (EPA) Methods 8015/8020 for TPHg and BTEX and by ' EPA Method 8010 for EDB The soil sampling and handling procedures for Canome's investigation are referenced in their 1993 site assessment report ' 3 5 Groundwater Monitor eIl Installation ' The groundwater monitor wells (W3, W5, W6, and W7) were completed to a depth of 30 feet bgs Wells W5, W6, and W7 were constructed of 2-inch diameter PVC while well W-3 was constructed of 4-inch diameter PVC for potential use as a groundwater extraction well Monitor well construction details are provided with the drill logs in Appendix B 36 Vapor Extraction Well Installation ' The vapor wells (W1, W2,and W4)were completed as 4-inch diameter vapor extraction wells to a depth of 15 feet bgs The vapor wells were screened from 5 5 feet bgs to the total depth of each Iboring Vapor well construction details are provided with the drill logs in Appendix B 3 7 Groundwater Monitoring and Sampling ' The four existing groundwater monitor wells (W3, W5, W6, and W7) were sampled on November 4, 1992 by Canonie Environmental A detailed description of the monitoring and sampling procedures for this event are provided in Canonie's 1993 Site Assessment Report On December 2, 1993 the groundwater monitor wells were sampled by SEACOP Prior to sampling, depth to water in each groundwater monitor well was taken and subjective analyses Iperformed The subjective analyses consisted of checking for floating product or a hydrocarbon sheen by lowering a clean teflon bailer down the well and collecting a sample at the groundwater-air interface Wells not containing floating product were purged of approximately 3 to 5 volumes of water or until groundwater parameters of pH,temperature, and conductivity stabilized as measured by portable meters calibrated to a standard buffer and conductivity standard (Appendix G) Groundwater samples were then collected by lowering a clean disposable bailer into the well and collecting a representative sample of the formation water The groundwater sample was slowly I 7001434 PARC sEACOR- NW05-002-01 5 May 3I 1994 I