Laserfiche WebLink
Re Report: Groundwater-qualityMonitoring—March 29-31,2006, 7500 West Elevenih Street, Tracy, CA Page 23 <br /> P <br /> 6.0 MONITORING OF POTABLE WATER SUPPLIES <br /> On March 30-31, 2006, an eighth round of potable water-quality monitoring was <br /> conducted, encompassing the water supply wells at the following three addresses: <br /> 7500 West Eleventh Street <br /> 23901 South Chrisman Road <br /> 23950 South Chrisman Road <br /> 6.1 Recovery Y p and Analysis of Samples from Potable Water Supply Wells <br /> Before the recovery of potable water samples, each well pump was turned on and water <br /> was flushed through the sampling port for a few minutes. Laboratory-supplied glassware, <br /> with, as appropriate, pre-dispensed preservatives, was then completely filled with water <br /> from the sampling port. When full, the glassware was tightly closed, labeled for <br /> identification, and transported to STL's laboratory in Pleasanton, California. <br /> Each water sample was analyzed for the following suite of analytes: <br /> Analyte Method of Analysis <br /> Total Petroleum Hydrocarbons EPA Method 8015M <br /> (quantified as Diesel) with pre-treatment by <br /> EPA Method 3630 <br /> Total Petroleum Hydrocarbons EPA Method 8260B <br /> (quantified as Gasoline) <br /> Benzene EPA Method 8260B <br /> Toluene EPA Method 8260B <br /> Ethyl benzene EPA Method 8260B <br /> Total Xylene Isomers EPA Method 8260B <br /> Tertiary-butyl alcohol EPA Method 8260B <br /> Methyl-tertiary butyl ether EPA Method 8260B <br /> i <br /> Di-isopropyl ether EPA Method 8260B <br /> Ethyl tertiary-butyl ether EPA Method 8260B <br /> tertiary-amyl methyl ether EPA Method 8260B <br /> L STL's laboratory is certified b the DHS to perform the groundwater analyses listed <br /> -� Y Y p � Y <br /> above. <br /> sic <br />