WORK PLANS - Laserfiche WebLink

Home Browse Search

' 0 ' electrodes, and SEC probes that will be used repeatedly will be cleaned before and after GEOMATRIX sampling each well and at any time during sampling if the object comes in contact with foreign ' matter. Purged waters and solutions resulting from cleaning of purging or sampling equipment will be ' collected and stored properly for future disposal by the client, unless other arrangements have been made. ' Cleaning of reusable equipment that is not dedicated to a particular well will consist of the 1 following: ' Bailers - the inside and outside of bailers will be cleaned in a solution of laboratory- grade detergent and potable water, followed by a rinse with deicnized (DI) water. ' They may also be steam-cleaned, followed by a DI water rinse. If samples are to be collected for metals analysis, the Teflon* bailer may be rinsed with a pH2 nitric acid solution followed by a double DI rinse. • Purge Pumps - All downhole, reusable portions of purge pumps will be steam- cleaned on the outside. If the pump does not have a backflow check valve, the inside of the pump and tubing also should be steam-cleaned. For a purge pump with a backflow check valve, the interior of the pump and tubing may be cleaned by pumping a laboratory-grade detergent and potable water solution through the system followed ' by a potable water rinse, or by steam-cleaning. ' Water Quality Meters -All meters will be cleaned by rinsing the probe portions in DI water, and allowing to air dry. ' Bailer Tripod- The tripod cable will be steam-cleaned or rinsed with DI water. ' Sample bottles and bottle caps will be cleaned by the subcontracted laboratory using standard EPA-approved protocols. Sample bottles and bottle caps will be protected from contact with ' solvents, dust, or other contamination. Sample bottles will not be reused. 6.0 REFERENCES SAMPLING OF GROWN DWATER MONITORING WELLS AND WATER SUPPLY WELLS Pae_e 9 of 10 ' MSC'PROTO-:NIW.TXT REVISION DAMMARCH IQo6 MW-9