ARCHIVED REPORTS XR0006991 - Laserfiche WebLink

Home Browse Search

gasoluic oxygenates/additives were detected at ni above the laboratory reported detection limits in any of the surface water samples On March 26 1999, t ondor conducted first quarter 1999 groundwater and surface water monitoring at Herman & Helen's Marina I aboratory analytical results of the groundwater samples collected during tine first quarter, 1999, monitoring event were generally consistent with historical quarterly groundwater analytical data Groundwater elevation measurements collected at the site on March 26 1999 indicated that the average depth to groundwater Aas approximately 5 5 feet below the monitor well and surface water station measuring points This ' average depth to water is 0 1 feet greater than the average depth to water measured on December 30 1998 (groundwater elcaation contours for March 26 1999 indicated that tine groundwater gradient at the site was generally consistent with the historical groundwater gradient ' Laboratory analytical results of tlne, surface water samples collected during the first quarter, 1999 monitoring event were generally consistent with historical surface water analytical data for BTEX and 1 PH-(-j M CBE, however was detected for the first time in the sample collected from IDCW (2 2 µg/1) \41 BE was detected in samples DDN and DDS at significantly higher concentrations during the first quarter, 1999, monitoring event (980 and 3 500 pg/1 respectively) than in prior monitoring events Additionally, TAME was detected for the first time in samples DDN and DDS On June 30, 1999 Condor conducted second quarter 1999, groundwater and surface water monitoring at Berman & Helen's Marina Laboratory analytical results of the groundwater samples collected during the second quarter, I999 monitoring event were generally consistent with historical quarterly groundwater analytical data I (groundwater elevation mcasuremcntS collected at the site, on June 30, 1999 indicated that the average depth to groundwater was approximately 6 2 feet below the monitor well and surface water station measuring points 13zis average depth to water is 0 7 Leet greater than the average depth to water measured on March 26, 1999 Groundwater elevation contours for June 30, 1999 indicated that the groundwater gradient at the Site is generally consistent with the historical groundwater gradient Laboratory analytical results of the surface water samples collected during the second quarter, 1999, monitoring event were generally consistent with historical Surface water analytical data MTBI: was detected for the second time in the sample collected from IDCW (1 4 pg/1) MTBE was detected in samples DDN and DDS at significantly lower concentrations during the second quarter 1999 monitoring event (5 4 and 1 8 gg/l, respectively) than in the first quarter, 1999 monitoring event Additionally, TAME was not detected in any of the surface water Sample during the second quarter, 1999, monitoring event On September 23, 1999, Condor conducted third quarter, I999, groundwater and surface water monitoring at Herman & Helen's Marina Laboratory analytical results of the groundwater samples collected during the third quarter, 1999, monitoring event were generally consistent with historical quarterly groundwater analytical data I However, benzene, and total xylenes were detected for the first time in the groundwater sample collected from MW-3 I Groundwater elevation measurements collected at the site on September 23, 1999, indicated that the average depth to groundwater was approximately 6 5 feet below the monitor well and surface water station measuring points This average depth to water is 0 3 feet greater than the average depth to water measured on June 30, I 1999 Groundwater elevation contours for September 23, 1999, indicated that the groundwater gradient at the site was generally consistent with the historical groundwater gradient The laboratory analytical surface water sample data for the third quarter, 1999, monitoring event were generally representative of historical data, with the exception of the first quarter 1999, data During the first quarter, 1999, I