ARCHIVED REPORTS_XR0004520 - Laserfiche WebLink

Home Browse Search

C A M B R I A Mr Ron Rowe April 15, 1999 Pore Pressure Pore pressure dissipation (PPD) tests were performed at various intervals I Dissipation Tests at two separate depths in CPT-11, CPT-13, CPT-14, and CPT-15 One PPD test was performed in CPT-12 The data from the tests are plotted and included in the data package from Gregg Drilling, which is included in Appendix D Cambria calculated the static depth to water for each of the tests from Gregg Drilling data package The results are presented in Table 4 Ground Water Sampling Cambria collected four discrete ground water samples at the CPT-11 Iboring location A Microprobe sampler was used to collect ground water samples in this boring With approval from SJCPHS, a hydropunch sampler was used to collect three ground water samples from each of CPT borings CPT-12 through CPT-15 Cambria's standard field procedures for cone penetrometer testing are presented in Attachment C Well Development. The new monitoring and extraction wells were developed, purged, and sampled by Blaine Tech Services, Inc (Blaine) of San Jose, California ion March 11, 1999 During the same site visit, Blaine purged and sampled existing monitoring well MW-1 Sample results wells are included in Table 3 A full report on the ground water sampling event will be issued under separate cover Chemical Analyses Cambria submitted a total of twelve soil samples and sixteen ground water samples for chemical analysis Blaine submitted one ground water sample from each of the five onsite wells for chemical analyses The soil and ground water samples were analyzed for the following • Total Purgeable Petroleum Hydrocarbons (TPPH) by modified EPA Method 8015, • Benzene, toluene, ethylbenzene and xylenes (BTEX) by EPA Method 8020, s Methyl tert-Butyl Ether (MTBE), Tertiary Amyl Methyl Ether (TAME), di-Isopropyl Ether (DIPE), Ethyl tert-Butyl Ether (ETBE), tert-Butanol, and ethanol using EPA Method 8260, and, • Methanol by modified EPA Method 8015 • I 4