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12/29/95 FRI 13:49 FAX 209 9.18 6652 <br />12/ 411335 11:5. 2Z®34;?3:C5 <br />Novlfntbe' 29, i c" <br />D S S COMPANY <br />-;NIVFRSo-�L ErIRO CC rF,ut U� <br />uEC 004MMOnt No.: R-11451811 <br />UEC Job No.: 185040.0610C <br />Air 01e4rtunow Sample Collection Protocol <br />The following guidelines. derived from modli`ying 40 CFR Part 789 AHERA protocol (October 30, I d87), <br />were followed during the caailecuon of air <br />ca ar+amptas: _ <br />a UEC principals and coneuttants aro indoWdeird of lila <br />Possible conflict Of Irttere8t. t contractor as to aaavoid <br />b. AN ir&npllnq egu# nent was thoroughly cleaned beforeeachuse. <br />c. Commercially available Samptmg CM8ttes Suitaiablaa for asbestos, ir*n ORS, anthophyllite, and <br />aellnollte counting were used. The collection medium was a mixed cellulose ester filter <br />mambrane. <br />d. The cassette used Is 25 -mm in diameter with an open-faced 50 -mm electrically conductive <br />extension cowl. An air Row raft between 1.0 and 10.0 liters/minute was selected for the 25 -mm <br />Cassette. Where possible, a sample time was chosen which produced a collection air volume <br />between 1,200 and 1,800 liters. <br />s. The cassette was suspended from a stand that 4 five feet high (located in the bre ing zone), <br />and separMe from to pump and connected with flexible tubing to prevent vibration of the <br />casseft and possible low of fibers from . <br />f. The sampling camette wa4 oriented 45 degrees downward from a horizontaal piano to minimize the <br />chance of large particles failing directly onto the filter. <br />g PHor to caiibraon and sampling, all pumps were checited for teaks. <br />h. All sampling pumps and flow meters were Calibrated with a r crazed standard: call on data <br />was recorded and maintained on site by UEC personrfW prior to initiating sampling and towing <br />sampling for each cusaatte. All sample flour rates rye approxtt»ataaty 10 ikerslminuts. <br />i. pump operation was monitored periodically during sampling to identify and rectify pump aeon <br />fluctuations, undesirable mechanical vibrations and Wake in the sampling train. <br />�. When sampling was complete, the cassette was turned Upwaard, the pump turned off, the fitter cap <br />replaced, and the sample removed from the sampling train. <br />k. Sample cassettes were individually sealed and transported to the laoaratory in a rigid corimner <br />with the chaain of custody form. Styrofoam pacWq matalrial was not used. <br />I. Dally work shift loge- deaumenbng all paaartlnent s=ampling sovittee were produced on rite by VEO <br />personnel. <br />m. Clearance air sampling was conducted at tfle locations outside the work area which are graphically <br />depicted in Sgwe 1. The sam wens analyzed by Phase Contrast Mlar (PCM) using til* <br />NIOSH 7400, Revision Na. 3, May 15, 1989, A counting Wise by a National Voluntary Laboratory <br />Accreditation Programa (NVL AP) and Amsdoan industrial Hygiene Association (RIMA) accredited <br />isboralataty. A clearance fiber concentration of the baseline alrbome liber concentration was the <br />goal for this project. <br />E <br />