Laserfiche WebLink
2" OD, Schedule 40 threaded flush joint PVC was run to 33' ; the <br /> bottom 15' was shop-made slots, the rest blank. The perforations <br /> were sand-packed with 5 sacks of #2 1/2 RMC gravel, sealed with <br /> one bucket of bentonite pellets, (wetted, ) and then grouted to <br /> the surface with Class A cement. <br /> After cementing MW #3, the crew grouted the other two wells. <br /> After settling for a while, additional cement was placed in the <br /> annulus to fill back to about 2' below the surface. <br /> Drill cuttings and water used for cleaning equipment were placed <br /> ' in properly marked drums and stored on site pending the results <br /> of the laboratory analyzes. <br /> Mr. Michael Collins, REBS, of the County EHD, was present during <br /> some of the drilling operations, and supervised the grouting of <br /> the wails. <br /> The preserved soil samples were transported to FGL Environmental <br /> by WJH, under proper chain-of-custody. Instructions were given <br /> to analyze all samples for BTEX, (EPA 8020, ) TPH--G, (EPA 8015M, ) <br /> and total lead, (EPA 7420 ) The results of those anayzes are <br /> summarized on TABLE II, which shows that all samples from MW-2 <br /> were below detection limits for BTEX & TPH-G; MSI-1 had small <br /> amounts of Toluene, Ethylbenzene, Xylene, & TPH-G in the sample <br /> ' at 16' ; and BTEX & TPH-G at 16' . and Benzene, Toluene, and Xylene <br /> at 23' were detected in MW-3 <br /> ' The laboratory reports and chamn-of-custody are included as <br /> EXHIBIT i . <br /> On April 16, Spectrum Exploration personel returned to the site, <br /> and developed all three wells by swabbing with a hard rubber <br /> disc. Water was placed in properly marked drums and stored on <br /> site. Cristie boxes were set and grouted in place, making sure <br /> ' that the annulus was filled with cement. Casings were cut off as <br /> required, and locking caps and locks were installed. <br /> ' On April 21 , Del-Tech Geotechnical purged all three wells, <br /> measured water depths, and obtained samples for analysis; field <br /> logs covering measuring and sampling protocol & a copy of the <br /> chain-of-custody are included as EXHIBIT K. <br /> The laboratory results of those analyzes are summarized on TABLE <br /> III ; copies of the laboratory reports and chain-of-custody are <br /> ' included as EXHIBIT J. <br /> On May 7, 1993, the wellhead elevations of the three wells were <br /> 9 <br />