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COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT <br />WATER QUALITY CONTROL DIVISION <br />WATER QUALITY PROTECTION SECTION <br />GROUND-W?.TER PERMIT GUID?NCE <br />SUGGESTED MONITORING WELL SA.t'viPLING PROTOCOL <br />B. GRC?ITKD-WFiTER SAMITLE CQLLEC"`ION <br />6. FIELD SAMPLE COLLECTION .41VD TESTING <br />dewatering of certain beds and may cause a chance in temperature. Pumping time <br />insufficient ro allow equilibration of water temperature in the casing and pump <br />colurttn will also cause drift of the temperature. Samples should be collected as close <br />to the wellhead as possible. If a container is used to hold the sample, the first sample <br />should sit in the container for one to two minutes in order to allow container to <br />equilibrate. The same~e is to thrown ou[ after the one to two minutes and a second <br />sample is to be collected into the container and the temperature shouid be recorded <br />immediately. <br />03i99mj1 <br />