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GROUNDWATER SAMPLING PROTOCOL <br /> Sampling of groundwater is performed by RESNA Industries, Inc sampling <br /> technicians. Monitoring well sampling procedures are summanzed as follows <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 /> 6. Monitor groundwater for temperature, pH, and specific conductance <br /> dunng 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 pnor to sampling next well. <br /> 1� <br /> RESNA INDUSTRIES INC <br /> Groundwater Sampling Protocol <br /> Latest Revision September 18, 1992 <br />