Laserfiche WebLink
Mr Mike Infurna <br /> Page 2 <br /> Groundwater Sampling <br /> On May 5, 2003 and May 6, 2003, site wells MWI through MW4 and U-Haul MW7 were <br /> purged and sampled At least three well casing volumes were purged from each site well <br /> During the purging process, temperature, pH and electrical conductivity parameters were <br /> measured Groundwater samples were collected after physical parameter stabilization and <br /> appropriate groundwater recovery Sample splits were collected from offsite U-Haul wells <br /> MW3C, MW6B, MW6C, MW9B, MW10B and MW10C after U-Haul's consultants, Blaes <br /> Environmental, had purged the wells All groundwater samples were stored in an ice chest <br /> refrigerated to a temperature of approximately 4°C Purgewater was contained in <br /> appropriately labeled DOT-approved 55-gallon drums Purge logs are included in Attachment <br /> A <br /> Groundwater samples were delivered under chain of custody protocol to Argon Laboratories <br /> (FLAP #2359) Sample analysis consisted of gasoline oxygenate additives, 1,2-DCA and EDB <br /> using EPA method 8260, BTEX using EPA method 8020, and TPHg using modified EPA <br /> method 8015 <br /> GROUNDWATER ANALYTICAL RESULTS <br /> Site Wells <br /> TPHg and benzene were detected in each site well TPHg concentrations ranged from 210 <br /> parts per billion (ppb) in MW3 to 120,000 ppb in MWI Benzene levels ranged from 0 9 ppb <br /> to 9,500 ppb in wells MW3 and MWI, respectively <br /> Di-isopropyl ether (DIPE) was detected in well MW2 at 2 9 ppb No other gasoline oxygenate <br /> additives were detected at the site <br /> 1,2-DCA was detected at a concentration of 1,100 ppb in well MWI, 340 ppb in well MW2 <br /> and 14 ppb in well U-Haul MW7 1,2-DCA was not detected in wells MW3 and MW4, and <br /> EDB was not detected in any site wells Analytical results are summarized. in Table 2 and Table <br /> 3 Attachment B contains laboratory reports and chain of custody documentation <br /> U-Haul Wells <br /> TPHg and benzene were detected 1n U-Haul well MW6B at concentrations of 120 ppb and 1 4 <br /> ppb respectively and were detected in well MW9B at levels of 130 ppb, and 1 7 ppb TPHg <br /> and BTEX compounds were not detected in U-Haul wells MW3C, MW6C, MW 10B and <br /> MW 10C <br /> i 1,2-DCA was detected in well MW6B at 17 ppb, in well MW6C at 78 ppb and in well MW9B. <br /> %\GZA—FSIVOL—EIDATAIGROUNDZEIHARRYS\ReportslQMR1200312QM2003 doe <br />