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CAMBRIA <br />' Grab Ground Water Sampling <br /> Ground water samples are collected from the open borehole using bailers, advancing disposable Tygon'9 <br />' tubing into the borehole and extracting ground water using a diaphragm pump,or using a hydro-punch style <br /> sampler with a bailer or tubing The ground water samples are decanted into the appropriate containers <br /> supplied by the analytic laboratory Samples are labeled, placed in protective foam sleeves, stored on <br /> crushed ice at or below 4°C, and transported under chain-of-custody to the laboratory <br /> Duplicates and Blanks <br /> Blind duplicate water samples are usually collected only for monitoring well sampling programs, at a rate <br /> of one blind sample for every 10 wells sampled Laboratory-supplied trip blanks accompany samples <br /> collected for all sampling programs to check for cross-contamination caused by sample handling and <br /> I transport These trip blanks are analyzed if the internal laboratory duality assurance/quality control{QA/QQ <br /> blanks contain the suspected field contaminants An equipment blank may also be analyzed if non-dedicated <br /> sampling equipment is used <br /> Grouting <br /> If the bonngs are not completed as wells, the borings are filled to the ground surface with cement grout <br /> poured or pumped through a tremae pipe <br /> . F%TEMPLATEISOPSICPT SAMPLING WPD <br /> I <br /> I <br /> I <br /> I <br /> I <br /> I <br /> 1 <br />