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GROUNDWATER SAMPLING PROTOCOL <br />' groundwater i performed b RESNA Industries, Inc sampling <br /> Sampling of g ater s p y <br /> technicians. Monitoring well sampling procedures are summarized as follows: <br /> t <br /> 1 Wells are sampled in approximate order of increasing contamination. <br />' 2 Proceed to first well with clean and decontaminated equipment <br />' 3. Measurements depths to liquid surface(s) in the well, and total depth <br /> of monitoring well Note presence of sediment. <br /> t4. Field check for presence of floating product; measure apparent <br /> thickness <br /> t5 Calculate minimum purge volume (well volumes) then purge well. <br /> 5 Monitor groundwater for temperature, pH, and specific conductance <br /> during purging. Following stabilization of parameters and removal <br /> of minimum volume, allow well to recover adequately. <br />' 7 Collect samples using Environmental Protection Agency (EPA) <br /> approved sample collection devices, i.e., teflon or stainless steel <br />' bailers or pumps. <br /> 8 Transfer samples into laboratory-supplied EPA-approved containers. <br />' 9. Label samples and log onto chain-of-custody form. <br />' 10. Store samples in a chilled ice chest for shipment to a state-certified <br /> analytical laboratory. <br />' 11. Secure wellhead. <br /> 12. Decontaminate equipment prior to sampling next well. <br /> RESNA INDUSTRIES INC. <br /> Groundwater Sampling Protocol <br /> Latest Revision. September 18, 1992 <br /> I <br />