Laserfiche WebLink
r: :=J TABLE lA <br /> HYDROPUNCH—GROUND-WATER SAMPLE ANALYSES <br /> Village West Marina,Stockton-San Joaquin County <br /> Results expressed in uglf <br /> LPA Method, <br /> ..! <br /> 50 0/S(11 .to EPA ,Method 602 510/E01..m is <br /> 11drnpunch�' Data Total <br /> Sai►Yp1e` Sauapled TPH g Benzene T4{ue�ae Ft[lyll��rizene ZCyl�nes IRYIF c1 <br /> .: ... ....: . <br /> HP-1 04/08/94 86 0.4 ND ND 0.6 ND <br /> 'j HP-2 04/08/94 ND 0.3 0.5 ND 0.4 ND <br /> HP-3 04/08/94 360 160 2.5 0.3 4.4 ND <br /> HP-7 07/03/95 ND ND ND ND ND NA <br /> HP-8 07/03/95 ND ND ND ND ND NA <br /> HP-9 07/03/95 196 124 1 0.3 5 NA <br /> 1413-10 07/03/95 ND ND ND ND ND NA <br /> Reporting <br /> Limits 50 pglf 0.3 pglk 500µglk <br /> ND Not detected above the reporting limit of the laboratory test. <br /> NA Not analyzed for TRPH-d <br /> Travel blank was nondetectable for all analytes. <br /> Drilling, Sampling, Completion, and Development of Initial Monitoring Wells <br /> On June 6, 1994, soil borings 4, 5, and 6 were drilled and completed as ground-water <br /> monitoring wells MW-4, MW-5, and MW-6. This sequence of well numbers was selected by <br /> the field geologist in order to avoid confusion regarding the previous HydropunchTm numbers HP- <br /> 1, HP-2, and HP-3. All monitoring wells were drilled, sampled, and completed in order to <br /> c-: determine the horizontal and vertical extent of soil and ground-water contamination and to allow <br /> for calculation of the ground-water flow direction and gradient. The monitoring well locations <br /> are depicted on the Site Sketch, Figure 2. W.W. Irwin, Inc. of Merced served as the <br /> environmental consultant while Woodward Drilling Company of Rio Vista drilled and completed <br /> the wells to a total depths of 30 feet. <br /> Collected soil samples were placed in an ice chest chilled to 4°C and dispatched to Sherwood <br /> Labs, Inc. of Hilmar using appropriate chain-of-custody procedures. Each sample collected to <br /> a depth of 20 feet was analyzed for the presence of Total Petroleum Hydrocarbons as gasoline <br /> 3 (TPH-g) by modified EPA Method 801515030, Total Recoverable Petroleum Hydrocarbons as <br /> -� diesel (TRPH-d), and the volatile aromatics benzene, toluene, ethylbenzene, and total xylenes <br /> (BTEX) by EPA Method 8020. Detectable, primarily fractional BTEX analytes were detected <br /> l <br /> W.W. Irwin, Inc. <br /> Project No. 33016.06 <br /> April 1996 4 <br /> ! <br />