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Scope of Work <br />Upper Mountain Counties Water Needs Assessments <br />perinanent residence (268 gallons per day) with a HUO well and 1.0 acre-foot <br />for a domestic well which are granted for tracts of land greater than 35 acres. <br />Commercial wells with meters ~Till be surveyed to assist in estimating water <br />demands for conunercial uses. Different levels of build out for uninlproved <br />platted lots will have to be assumed in order to provide a range of water <br />demands to 2050. A GIS map of water demand for tllese areas may be helpful <br />to show areas of more dense developinent and related water demand. <br />3.2 Estiniate tlie water demarid for unplatted private propea^ty iri eacli county tliat <br />woi~ld rely ora doryiestic or cornniercial wells <br />Using the information froin Task 1, estiinate the water deinand for unplatted <br />property in each county based on the current zoning to project water demands <br />for these areas. The same assumptions set forth in Task 3.1 will be used to <br />estimate aiulual water demand. Different levels of build out will have to be <br />assumed in order to provide a range of water deinands to 2050. A GIS inap of <br />water deinand for these areas inay be helpful in depicting areas with more <br />dense development atld related water demand. <br />Task 3 AssT~mptio~is <br />^ Discussion with some water providers about water denland in t11e study area nlay <br />result in a lower requirenlent for a pernlanent residence and if so, this value may be <br />used. <br />Task 3 Deliverables <br />^ Estinlates of water denlands for existulg platted lots with GIS mapping. <br />^ Estinlates of water denlands for unplatted private property wit11 GIS nlapping. <br />Task 4- Recharge of Aquifer Systems will be Estimated <br />4.1 Lorig terwn anriuc~l precipitntion available over tke foiir counties will be obtairied <br />The information fronl the National Weather Service and NOAA on long-ternl annual <br />precipitation and seasonal precipitation for t11e four counties will l~e obtained and GIS <br />nlaps if available acquired. <br />4.2 Geologic ~riappi~ig of the varioiss aq~~ifer syste~ris will be obtai~ied <br />T11e available geologic nlaps for the four counties will be obtained usulg information <br />available fronl the USGS, CGS, and DWR file infornlation. These nlaps will be <br />conlbuzed into a GIS geologic overlay in order to assist in estimating recharge to t11e <br />aquifer systems. <br />4.3 Arim~al recliarge to aquifer systeyns will be estirn~ted <br />Tl1e iilformation available fronl tlle USGS study u1 the Turkey Creek watershed u1 <br />Jefferson County (Water Resources Investigations Report 03-4034) will be used to <br />estimate recharge to aquifer systems based on t11e geology and annual precipitation. <br />The aquifer systenls are those defined u1 the above report and uzclude nletamorphic, <br />uztrusive, fault-zone, and Pikes Peak Granite. To the extent t11at the alluvial aquifers <br />C:\Documents and Settings\rowannc\Desktop\To File Back\UMGSOW-rv4.doc <br />