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b. Conduct soil survey of beta drainage system. Install new observation wells as needed along the beta drainage system. c. Establish initial baseline data on well depths prior to cleaning, and then monitor water table depths as the beta system is cleaned, and for two additional irrigation seasons after cleaning. Develop or update water contour maps as data is recorded. d. Excavate wasteway for the beta drainage system as needed. e. Install water flow monitoring system at the outlet(s) of the beta system into the wasteway as needed. 4. Clean out the selected beta subsurface drainage system. This system will be used to estimate rehabilitation benefit-costs. Organize and conduct a study tour for Lower Arkansas Valley drainage district board members to the South Columbia Basin Irrigation District, Pasco, Washington to view its drainage operation, maintenance and drainage record keeping program. This study tour is designed to assist a research advisory committee that will be responsible for overseeing the stud ;. and to be�in a dialogt.e ab:��lt the�futui organi�ational structuze of drainage � districts in the Lower Arkansas Valley. 6. Explore with landowners the possible opportunities to combine all or most drainage district operations under a new consolidated drainage authority for the Lower Arkansas Valley. a. Evaluate and compare O& M costs for the current unconsolidated drainage district situation (i.e., 25 or so independent drainage districts) and then for a new consolidated authority, utilizing an O& M program similar to that of the South Columbia Basin Irrigation District. 7. Develop a multi-county (i.e., Prowers, Bent, Crowley and Otero counties) rehabilitation and maintenance spreadsheet, based on methods derived from the South Columbia Basin Irrigation District drainage maintenance program. This database will also provide guidelines for future rehabilitation steps. 8. Determine the need for expanding the existing drainage system to bene�t imgated lands. a. An analysis of potential new subsurface and surface drainage systems that would benefit additional lands that do not appear to be served by the existing drainage systems, and the additional estimated benefited acreage. Information on potentially new benefited acreage would be obtained from the current on-going Colorado State University research. b. A preliminary estimate of the maximum economic benefit to be achieved by designing adequate drainage for the best classes of land in the tri-county area, based on their current production value.