Laserfiche WebLink
OE ll i <br /> Groundwater Elevation and Analytical Data <br /> Former ARCO Service Station No 2168 <br /> 441 Charger Way <br /> Stockton,California <br /> Elevation <br /> Top of Static Water Groundwater Depth to Ethyl- Total Dissolved <br /> Well ID Casing(feet Level Elevation Screen(feet TPHg Benzene Toluene benzene Xylenes MtB6 Oxygen <br /> &Sample Date msl) (feet bgs) (feet msl) bgs) jtg/L Ag/L Ag/L }eg/L pg/L Ag/L mg/L <br /> Notes <br /> NA .Not analyzed NS=Not sampled NE=Not evaluated <br /> msl=mean sea level bgs F below ground surface <br /> —=measurement not taken mg/L=milligrams per liter <br /> pg/L.—Analytical results in micrograms per liter <br /> TPHg=Total petroleum hydrocarbons as gasoline(reported as GRO-gasoline range organics) <br /> <.Below dacction limit for analytical methods used <br /> "-Raised method reporting limit due to high analyte concentration requiring sample,dilution <br /> "=Raised method reporting limit due to matrix interference <br /> MtBE was analyzed using USEPA Method 8260 unless noted otherwise(see below) <br /> [I]=MTBE was analyzed numg USEPA Method 8020 <br /> [2]n Water levels collected on 11/5199,samples collected on 12717/99 due to equipment failure <br /> [3]=Water level collected on 2/25100 <br /> [4]Chromatogram Pattern Gasoline C6-C12 <br /> [5]Chromatogram Pattern Weathered Gasoline C6 C i2 <br /> [6]Chromatogram Panem Weathered Gasoline C&M+Unidentified Hydrocarbons C6-C12 <br /> [7]Chromatogram Pattern Unidentified Hydrocarbons C6-C12 <br /> [8]Hydrocarbon pattern is present in the requested fuel quantitation range but does not resemble <br /> the pattern of the requested fuel <br /> [9]Sample was re analyzed outstde of USEPA recommended hold time at a dilution o <br /> [l0]The sample was diluted due to the presence of high levels of non-target analytes resulting in <br /> below elevated reporting limits <br /> Numbers in column next to well designation indicate discrete depth samples in feet bgs <br /> Beginning 6113102 analytical data validation is Provided in the text <br /> Data Qualifier Definitions <br /> U The analyte was analyzed for,but was not detected above the sample reporting limit <br /> J The analyte was positively identified the associated numerical value is the approximate concentration of the analyte in the sample <br /> N The analysis indicates the presence of an analyte for which there is presumptive evidence to make a tentative identification <br /> NJ The analysis indicates the presence of an analyte that has been"tentatively identified and the associated numerical value represents its approximate <br /> concentralton <br /> UJ The analyte was not detected above the reported sample reporting limit However the reported reporting hmtt is approximate and may or may not <br /> represent the actual limit of quantitation necessary to accurately and precisely measure the analyte in the sample <br /> R The sample results are rejected due to serious deficiencies in the ability to analyze the sample (i a the presence or absence of the analyte cannot be <br /> venfied)or the analyte idenbficabon has been rejected(i a the presence of the analyte cannot be verified) <br /> ND Not detected above reported detecbon limit <br /> i <br /> k U5 BP ARC01021681Quarterly12168 GWMR 4Q03 xis <br /> Page 9 of 9 <br />