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i <br /> 19 October 2012 <br /> AGE-NC Project No. 97-0312 . <br /> Page 18 of 22 <br /> r catalytic oxidizer at a minimum temperature 600 degrees fah"renheit for treatment and <br /> L discharge. <br /> Soil-vapor was sampled within a Tedlar sampling bag and carbon-charcoal tubes, and <br /> vaporwas measured with an OVM equipped with a PID.An effluent vapor sample was also <br /> collected and OVM measurements were collected to monitoring the destruction of the <br /> hydrocarbons. <br /> 7.1. . EXTENDED HVSVE PILOT TEST PROCEDURES <br /> The pilot test was initiated at 10:30 AM on 14 February 2011 and continued over a five-day <br /> period,representing approximately 92.8 hours of SVE operation. The test was terminated <br /> on 19 February 2011. Utilizing the above-referenced vacuum blower, an induced vacuum <br /> potential was applied at the well-head of vapor well VW-1:Thereafter,the vacuum-induced <br /> pressure reduction was monitored at 30-minute intervals from surrounding observation <br /> points (VW-2, VW-3) which were pre-connected with air-tight well caps and Dwyer <br /> Magnehelic vacuum gauges fitted to each observation well. <br /> During the test, soil-vapor flow was monitored at the well head of VW-1 utilizing a Blue <br /> White flow rotometer/totalizer. The flow rate was recorded -in SCFM. Organic vapor <br /> concentrations were monitored for the presence of organic vapor using an ovm equipped <br /> with a PID. The organic vapor concentrations and flow rates were measured at 30-minute <br /> r intervals. <br />' L <br /> 7.2. EXTENDED HVSVE PILOT TEST SAMPLING AND ANALYSIS <br /> A total of five soil-vapor samples were collected during the pilot test. Soil-vapor samples <br /> were collected daily from a sample port near the outlet of the vacuum blower to measure <br /> hydrocarbon concentrations in the extracted soil-vapor. The samples were collected in <br /> Tedlar bags and charcoal-tubes (adsorbent). Samples were transported in a chilled <br /> container under chain-of-custody.to MAI a CDPH-certified laboratory. Each sample was <br /> analyzed within 72 hours for: <br /> L TPH-g, BTEX, MTBE, TAME, DIPE, ETBE, TBA, EDB and 1,2-DCA in accordance <br /> with EPA Methods 8015M and 82606.. <br /> • TPH-d in accordance with NIOSH 1550 for total extractable petroleum <br /> hydrocarbons. <br /> Advanced GeoEnvironmental,Inc. <br /> C <br /> Yrr` <br />