Laserfiche WebLink
field notebook. Plate 6-2 shows an , example of the water sample field <br /> data sheet. Copies of the field data sheets will be reviewed by the <br /> sampling coordinator after the sampling event is completed. The pH, <br /> electrical conductivity, and temperature meter will be calibrated <br /> prior to initiating field activities. The calibration will be checked <br /> once each day to verify meter performance. <br /> After the calculated purge volume has been removed and the pH, conduc- <br /> tance, or temperature has stabilized, samples will be collected. With <br /> as little interruption in pumping rates as possible, the pump effluent <br /> will be directed into appropriate containers. .The pump flow will be <br /> regulated when collecting samples for volatile organic analysis. The <br /> flow will be set to approximately 100 milliliters per minute to <br /> minimize turbulence and aeration of the pump effluent. If insuffi- <br /> cient water is present or the total depth is too great in the well for <br /> the pump to function properly, ground-water samples will be collected <br /> with a bottom filling bailer constructed of Teflon. <br /> Sample bottles for volatile organics analysis will be filled complete- <br /> ly to prevent any air from remaining in the bottle. A positive <br /> miniscus forms when the bottle is completely full . A convex Teflon <br /> lined septum will be placed over the positive miniscus to seal the <br /> container. After capping, the bottle will be inverted and tapped to <br /> check that no air bubbles are present. All samples for organic <br /> analysis will be collected in duplicate. The sample containers for <br /> other parameters will be filled, preserved as required, and capped. <br /> Stream samples will be collected with a dipper in accordance with the <br /> procedures described in Section 9 of TPst Methods for Evaluating Solid <br /> Waste. Phvsica1ZChemjcal Methods (EPA SW-846, 3rd edition, November <br /> 1986) . These samples will be collected at midstream, mid-depth <br /> locations in an upstream to downstream direction unless otherwise <br /> directed. Surface-water samples will not be filtered. <br /> PJ9 9390313.000 - <br />