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MOBILE - GEOCHEMISTRY <br /> Sample Collection <br /> Mini-cans with a male quick:disconnect end <br /> 1. If a leak/tracer compound is required; place leak compound around base of probe <br /> where it enters the ground and around sampling assembly. An easy way to do this is to <br /> lightly dampen paper towels with isopropyl'alco.hol (rubbing alcohol)-and place near <br /> probe tubing and sampling assembly. DO NOT USE.EXCESS TRACER. <br /> 2. Connect mini-can to the sampling assembly(photo 4). Mini-cans without valves will <br /> begin to fill. if mini-can has valve, open valve to commence filling.. The vacuum gauge <br /> should immediately go to at least—2.5"of mercury. If not, the mini-can should be <br /> discarded and another one used: <br /> Minkcans with no male quick-disconnect end <br /> 1. Disconnect female quick disconnect from the sampling assembly(photo 5) and connect <br /> minkcan to sampling assembly at the 1l4" Swagelok fitting male fitting (photo 6). <br /> 2. If a leak/tracer-compound•is required, place leak compound around base of.probe <br /> where it enters the ground and around sampling assembly as described above. <br /> 3. Open valve to collect sample.. The vacuum.gauge should immediately go to at least- <br /> 25"'of mercury. If not,the mini-can should be discarded and another one used. <br /> Collection Notes: <br /> The mini-can should fill in 2 to 5 minutes depending upon soil permeability. If mini-can <br /> not filled within 5 minutes, make note of vacuum reading. Allow to.fill for another 5 <br /> minutes. If mini=can not filled after 10 minutes, make note of vacuum reading and stop <br /> collection. If the next mini-,can also not filling at proper rate, the flow restrictor may be <br /> clogged, so replace with spare, <br /> If water droplets are observed, stop collection and note the presence of water on <br /> the sample label and chain-of-custody. <br /> Keep mini-cans.out of sun and do not chill. Label with ballpoint pen. <br /> DO NOT USE A SHARPIE! <br /> Wash hands or remove gloves between samples to ensure tracer compound is not on <br /> your fingers when connecting fittings. <br /> Flushing of Sample Assembly Between.: amples <br /> Flush sampling assembly between samples by connecting syringe with male quick-disconnect <br /> to female quick-disconnect and flush with ambient air 3 times-using syringe. <br /> Problems&Technical Support <br /> Call H&P at(800)834-9888 <br /> 2 <br />