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rs <br /> IMIN <br /> tM <br /> i <br /> as <br /> Approval to perform the source test was givenverbally as long to <br /> a written notice of the start <br /> and ) <br /> tted <br /> SjC-AQB, which it was, see AppendixE. <br /> oline range hydrocarbons were known to exist beneath The tank <br /> Gas <br /> island dispensers and undergound storage tank areas. <br /> dispenser areas were overexcavated and the <br /> excavation and product <br /> majority of contaminateineered fioilll f was <br /> themexcavations. Peadgraveluwas <br /> th <br /> as compacted en <br /> first used to comcactedlthe nativexcav <br /> soilttontheosurface. foot <br /> ntOctober <br /> followed by the P <br /> g and 9, }990 three <br /> taathe 40or extraction <br /> clepthwells <br /> usingr2 inch aSCHd40�PVC <br /> these excavated areas <br /> with 0.02 inch slot casing for the wells. <br /> on ..December 5, 1990, . activated charcoal in four-85 ga1g90. 'llon tub. <br /> scrubs. was. delivered;tr� .the site, ent .areand on December ground. The <br /> walls were manifolded to the treatment :ir�e�o, °:. avetest.began <br /> blower.. was installed on December 10, <br /> that same day., <br /> see Figues. 3C, 9A,: and 9B. Leaks"were•discovered <br /> in the pump -On:Deceuber 13, _,.1990 and the test was ' temporarily <br /> discontinued until the .pump-was fixed. The test was restarteri on <br /> December: 27 1990 and. terminated " on January 4, 1991, cahen <br /> December. 27. as;noted on the exhaust of the 4-85 gallon: charcoal <br /> -r canisters, see`"slug Test Appendix E. <br /> TEST PROCEDURES <br /> t P3 <br /> The test was to Proceed for a duration of one month or until break <br /> through, which ever occurred <br /> vacusmtsystem po(1HPRotronnBlower.) 3that , <br /> and EX:.were connected to abarcoal tub <br /> exhauts o�SOWQrepinstalledlon aat eachlwellatbcobtain samples,' and <br /> Sample . P the influent of the blower for samples and <br /> vacuum readings, at and at the e�chaust of the blower for pressure <br /> vacuum monit��ring, ort was also located on the <br /> and sample ` monitoring. A sample P les and pressure <br /> exhaust of the charcoal tub scrubs for same on <br /> monitoring. The exhaust <br /> sthrough usingua hand sheld rephotoionizing <br /> alternate days for as 54 <br /> detector (PID) that had been calibrated with isobutyleneed as shown by the PID�,pa <br /> benzene in air'dlarCba )e ofttheucharcoal gh rexhaust was obtained and <br /> _ bag sample (te g of the test, <br /> the pilot test was terminated. At the start up p3 and EX <br /> influent sampte�awmele-_wasobtainede obtained mfrom lthe exhausttor wells ofthe blower <br /> --- --- -- -- ----- ----and an-an -luen P <br /> and analyzed for total .Petroleum Hydracarthsienzene and Xylenes <br /> and diesel along with Benzene, Toluene, Western <br /> BTEX) using DHS headspace. method with In theobloweraon December <br /> ph <br /> ( sneers (WEGE) . A leak developed z <br /> Geo-Eng <br /> Page .e <br />