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PERMFILE62427
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PERMFILE62427
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Entry Properties
Last modified
8/24/2016 11:08:49 PM
Creation date
11/20/2007 7:33:25 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M2000158
IBM Index Class Name
Permit File
Doc Date
4/11/2001
Doc Name
Objector Representation and information
From
LIND LAWRENCE OTTENHOFF LLP
To
ERICA CROSBY
Media Type
D
Archive
No
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04/11/01 18:51 <br />~,. <br />'$970J581111 <br />THE I.dVr BOIL,DING <br />• <br />Forrest Leaf, P:E. <br />13946 CR 56 <br />Aillrose, CO 80733 <br />(970 396-8906 <br />(970 352-1982 FAX <br />eewedleaf®yahoo.com <br />LEAF <br />Kim R Lawrence, Esq. <br />Lind, Lawrence & OttenhotF <br />1011 - 11'" Avenue <br />Greeley, CO 80631 <br />ENGINEERING <br />Mazch 26, 2001 <br />Re: Well injury analysis, S&H Mine <br />Dear Kim: <br />I have reviewed the proposed S&H gravel pit and the potential for injury to 16 irrigation wells <br />azld 9 domestic and stock wells. The 16 irrigation wells and 9 domestic wells are located within <br />1.5 miles of S&H's proposed gravel mining operation. This letter report presents the potential <br />injury to the 16 irrigation wells and 9 domestic wells that would result from the dry-mining of <br />gravel cells associated with S&H's gravel mine. <br />@J 004/007 <br />.Figure 1 shows the locazion of the 16 irrigation and 9 domestic wells. The irtigation wells are <br />used to provide irrigation water to cultivated crop land and have a long history ofbeing used for <br />irrigation of said crop lands. The 9 domestic wells aze used to provide domestic water to <br />numetnus farm houses and also drinking water for livestock. <br />I calculated the historic aquifer response resulting from the pumping of the 16 irrigation wells and <br />the 9 domestic wells simuhaneously using the Theis method for unsteady radial flow in an <br />unconSned aquifer. In addition, I calculated the additional impact from the proposed SBcH mine <br />using the same Theis method. <br />Aquifer properties were taken from the ] 972 Hurr and Schneider open-file report "Hydrogeologic <br />Characteristics of the Valley-Fill Aquifer in the Greeley Reach of the South Platte River Valley, <br />Colorado". These properties included the aquifer saturated thickness and transmissivity. Decreed <br />ptunping rates for the 16 irrigation wells were obtained from the State Engineer's tabulation. It <br />was assumed thaz the 9 domestic wells had a flow rate of 15 gallons per mimtte. <br />The injury analysis for the historic analysis was predicated on the assumption thaz each well was <br />pumping az it's decreed discharge raze simultaneously. The drawdown at each well was <br />LEAF ENGINEERING <br />Hydrology 'Hydraulics ' Water Resources ' Water Quality <br />F.:LL.enOhutnikLLawremz 5811 xell injury lever rcport.wpd <br />~ECEd~'~~ ~1:~,;~ 2 ~ mot <br />
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