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Section 3 <br />Field Data Collection Procedures <br />municipalities and from water user groups with water level monitoring programs. <br />Wells that were retained for use in the bedrock water level monitoring program in <br />Phase 2 will be measured in the fall of 2005, unless prevented by unforeseen site <br />access constraints. Locations of bedrock water level monitoring wells are presented in <br />Figure 2-2. <br />CDM will measure the depth to water at each well using methods comparable to <br />those currently used by the State during their 2005 spring-season measurements. The <br />measurement date, time, well identification number, measuring point location, casing <br />stickup, and other descriptive information pertinent to the measurements will be <br />noted and recorded in a field notebook. The procedure for measuring water levels is <br />presented in Appendix B. <br />Under Task 39.2 of Phase 3, suitable bedrock wells for long-term monitoring of water <br />levels in the Denver Basin bedrock aquifers will be identified for inclusion in the <br />SPDSS monitoring network. These wells will be selected to provide continuous <br />records of water levels in areas near major pumping centers. Up to four bedrock wells <br />will be selected and instrumented with a pressure transducer and data logger, if <br />suitable wells with cooperative owners can be located. The State will be provided <br />with a list of candidate wells for its approval prior to installing data loggers in the <br />wells. Data loggers will be installed in the selected wells and programmed to record <br />data several times each day. The data loggers will be dedicated to these wells through <br />Phase 5 of the SPDSS. After verifying that the data loggers are operating correctly, <br />they will be accessed by CDM twice in a 12-month period to download data, verify <br />proper functioning, and provide routine maintenance as needed. CDM will review <br />the data and discuss with the State the need for and benefit of continuing to record <br />water levels at the target wells beyond Phase 5. <br />3.2.2 Alluvial Water Level Measurements <br />During Task 35 in Phases 1 and 2 of the SPDSS, 33 alluvial monitoring wells were <br />installed and instrumented with automated water level transducers and data loggers. <br />An additional five wells belonging to cooperating entities or individuals were <br />instrumented with automated water level transducers and data loggers, resulting in a <br />total of 38 SPDSS monitoring wells. Additionally, 33 supplemental wells operated by <br />cooperating municipalities or water user groups with water level monitoring <br />programs were identified during Phase 2 and included in the SPDSS monitoring <br />network. At locations formerly monitored by the CSU water level monitoring <br />program in the Weldona and Balzac interest areas, 10 supplemental wells were <br />identified for inclusion in the SPDSS water level monitoring program. All of these <br />wells were surveyed during Phase 2 under Task 35. <br />During Phase 3, data at the 38 wells instrumented with automated water level <br />transducers and data loggers will be downloaded at approximately 6- to 9-month <br />intervals, anticipated to occur during the fall and spring of 2005 and 2006, <br />respectively. Additionally, water levels will be measured during the spring at the <br />10 supplemental wells located in the Weldona and Balzac interest areas and formerly <br />`~ ~ <br />3-5 <br />FINAL SPDSS T33 WORK PLAN &3-OS.DOC <br />