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I I I I I I I I I I I I I I I I I I I nt>~~'~ Chapter 2 - Defina Water Supply & Water Quality Needs Crested Butte South Metropolitan District Water Supply Sources of raw water supply for Crested Butte South are two wells located adjacent to this subdivision. The two wells are rated at a combined 315 gallons per minute and are operated using a 2 cfs (1.3 MGO) water right decreed in an augmentation 1il1an which is based on a 1906 irrigation decree for the East River No.2 ditch. Treatment of approximately 11-14 MG per year consists of chlorinating the well discharges. THe District has 0.4 MG of treated water storage but no raw water storage. No expansion is slated for this system at this time. About 150 existing residences are currently served, of which, 90 percent have full time occupants. There are no commercial or industrial customers. The existing well system is capable of serving about 500 residences. However, the water right is sufficient to support 3,500 to 4,500 persons on a total of 783 building sites. Sewage Treatment The Crested Butte South wastewater treatment facility uses an extended aeration activated sludQe process. Existing rated plant capacity is 0.05 MGD, while average peak molithly flows are currently 0.025 MGD. An upgrading will include a clarifier to raise the capacity from 0.05 MGD to the 0.08 - 0.09 MGO range. The facility discharges to the East River. Some septic systems just downstream of CB South leak to the groundwater, and there is a need to tie these into the facility. Sludg~ is land applied. RTW has projected average peak monthly flows of 0.213 MGDiby the year 2013 and 0.288 MGD by 2033. indicating a need for significant plant enlargement. Meridian Lake Subdivision Water Supply The Meridian Lake Homeowners Association maintains an independent water supply for the subdivision. Raw water is collected from springs on the south slope of Snodgrass Mountain under a 2.5 cfs (1.6 MGD), 1906 decree and 61 - u_ ~_~. ~,~ ~ .,50-., "'.