2022-11-07_PERMIT FILE - M2022001 (13)

Home Browse Search

SECTION 4 - DEWATERING SYSTEMS EXISTING DEWATERING STRUCTURES An inventory was made of the existing wells and stormwater ponds that could potentially be used for dewatering. The Town's GMP, Main Street and Elm Street (M+E), Town Hall (TH) and 5tn Street wells were identified as potential dewatering wells. These wells have estimated historical pumping capacities of approximately 300 gpm to 800 gpm. Details about these and other wells in Town are presented in Table 4.1. The GMP and M+E wells located at ideal dewatering sites, but are approximately 20 and 46 years old, respectively, and would need to be replaced to achieve maximum well yields. NEW DEWATERING STRUCTURES Additional potential dewatering well sites were identified based upon current and expected future land use within Town. Figure 4.1 presents a total of l l potential well sites that were considered for dewatering. Of those sites, only the WWTP site was included in the conceptual dewatering alternatives. Table 4.1 - Sum ma of Town Wells Name Permit No. Year Constructed Reported at Status 5th St. 12390-R 1945 300 Active M+E 13119-F-R 1970 800 Operational, Inactive TH 13118-F 1956 800" Not Operational GMP 47041-F 1996 700 Active Notes: Rates and statuses reported by Town of Gilcrest. *Rate reported on Permit No. 13118. Rates and statuses reported by Town of Gilcrest 600-FOOT SPACING Water supply wells located within 600-feet of each potential dewatering well sites were identified based upon records available from the Division of Water Resources and communications with Town staff.Figure 4.1 identifies water supply wells located within 600-feet of potential dewatering well sites and information regarding those wells is summarized in Table 4.2. Pursuant to C.R.S. 37-90-137(2)(b) dewatering wells must be located more than 600-feet from any water supply well unless a waiver has been obtained from the well owner. 15