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7� <br /> e <br /> VAPOR EXTRACTION TEST (VET) SPECIFICATIONS <br /> for <br /> FORMER TEXACO SERVICE STATION <br />�. 305 SOUTH HUTCHINS STREET <br /> IMIf CALIFORNIA <br /> (Page 1 of 2) <br /> VET Equipment Description <br /> The extraction unit shall consist of a regenerative blower equipped with an explosion-proof motor <br /> enclosure that satisfies the Class 1,Division 1&2 requirements of the National Electric Code. The <br /> blower shall be capable of generating a minimum of 30 standard cubic feet per minute(schn)at a <br /> vacuum of 55 inches of wa:fir column. The effluent from the blower shall be routed through two•. <br /> (2)1�und granular activated=bon units. The process piping shall be configured and equipper; <br /> such that the data collection prote--ols outlined below are met. The VET systenn shall be portable <br /> and fully self contained with regard to electrical power. <br /> I <br /> VET Test Procedures <br /> 1.1, .Measure and record the distance from the top-of- sing to the bottom :of Bch 1vapor <br /> extraction.well. Measure the depth to groundwater (if any). <br /> 2; Install.00- 1"water cvium► .pire-calibrated MagnaheliOgauges onto VW 1,MW-3 and VVV- <br /> �!. If the observed. vacuiu jn during the test exceeds 11 of water column, the Cl" - 1" <br /> MagnalzelicTM.gauge.;hall ce replaced:with a 1" - 10" iVlagna�helcrM gauge. <br /> 3. Record preyextractxon vacuum readings (if any).: <br /> 4. tonned 2-inch diameter pipingfrom ''rJ'`W-2 to the blower intake... <br /> i <br /> 5.. ,Initiate extraction. from VW 2 at a flowra�te of 30 a ual cubic feet per minute (acfmi}.. <br /> 1~'lowrate:measurement sh Cl be accomplished using a Dwyer DS-200 flow sensor:. <br /> i <br /> +5. Measure and record extracdon well flawrate,process flc w temperature,vacuumand oxygew <br /> and carton dioxide contents;(in percent) every 15 minutes.. <br /> 7.. Measure and.record vacuum response at'VW-1, MW-� and VW-4 every 15:minutes, <br /> At the errd of the first: 15;minutes of extraction, collect#a 14iter vapor sample'into a tedlar <br /> bag frorre the prDcess line.between VW-2 and the blow;`er;. <br /> :9: Continue extraction from `l V-2 <it 30 acfm for three (.3 ,bo. rs coilecting data specified in <br /> : <br /> Steps fi and T. <br /> i <br /> o . <br /> i. <br /> s <br /> i <br /> . i�. <br /> 1�a <br />