ARCHIVED REPORTS_XR0002604 - Laserfiche WebLink

Home Browse Search

I E"1ani0MgW'll Date Collected TOTAL PET ROLEUM AROMATIC VOLATILE ORCANIC AND OXYGENATES . HYDROCARBONS GASOLINE DIESEL BENZENE TOLUENE ETHYL XYLENE TAME Tet Butmol MTBE 17 PCA BENZENE Ethnoi and EDB Methane/ MW 6 2/12/00 ND ND ND ND ND ND ND ND ND ND 4/28/00 ND ND ND ND ND ND ND ND ND ND 9120/00 ND ND ND ND ND ND ND ND ND ND 12/27/00 ND ND ND ND ND ND ND ND ND ND 7/30/01 ND ND ND ND ND ND ND ND ND ND 11/5/01 ND ND ND ND ND ND ND ND ND ND 2/27/02 ND NA ND ND ND ND ND ND ND ND 5/21/02 ND NA ND ND ND ND ND ND ND ND I 8129/02 ND NA ND ND ND ND ND ND NO ND 12/10/01 ND NA ND ND ND ND ND ND ND ND 3/28/03 ND NA ND ND ND ND ND ND ND ND 5/21103 ND NA ND ND ND ND ND ND ND ND Note ND - Not Detected at Method Detection Limits NA - Not Analyzed Detection Limits EPA Method 82606 vanes most are - 5 0 ppb The highest detection of MTBE encountered is 780 parts per billion (ppb) found in deep ► groundwater monitoring well MWO-1X located approximately 10 feet northeast of the current tank farm Monitoring well MW-2 had a decrease from previous levels, having levels of 250 ppb MTBE MTBE was detected for the fourth time in offsite monitoring well MWO-2 at a concentration of 32 ppb TABLE 11 HISTORICAL GROUNDWATER INFORMATION (Bold designates most recent measurements) Monitoring Well Elevation of PVC Depth to Groundwater Elevation of Gradient Dtredlon Groundwater MWO 1 X 2127102 13 69 feet 7 68 feet +601 East MWO-1 X 5121/02 13 69 feet 7 91 feet +5 78 East MWO-1 X 8/29102 13 69 feet 8 25 feet +544 East MWO 1 X 12/10/02 13 69 feet 9 04 feet +465 East MWO 1 X 3/28103 13 69 feel 8 31 feet +538 East MWO-IX 5/21/03 13 69 feet 8 04 feet +565 Northeast MWO-1 2/27/02 1327 feel 740 feet +587 East Avalon Environmental Consultants Project# 9627-001-15 Joes Truck Plaza 15600 South Harlan Road May 23, 2003 5 Lathrop, California 1