2015-09-22_HYDROLOGY - M1980110

• Permit No: M1980110
• IBM Index Class Name: HYDROLOGY
• Doc Date: 9/22/2015
• Doc Name: Sub Water Supply Plan
• From: DWR
• To: DRMS
• Email Name: TOD
• Media Type: D
• Archive: No

DEPARTMENT OF NATURAL RESOURCES
DIVISION OF WATER RESOURCES
September 17, 2015
Austin Malotte, P. E.
Bishop -Brogden Associates, Inc.
333 West Hampden Avenue, Suite1050
Englewood, CO 80110
RE: Substitute Water Supply Plan, E -470's Sandy Acres Pit,
DRMS File No. M-80-110
SE1/4 of Section 26, TIS, R67W, 6th P.M.
Water Division 1, Water District 2, Adams County
Approval period: October 1, 2015 through September 30, 2016
Contact phone number for Mr. Malotte: 303-806-8952
Dear Mr. Malotte:
John W. Hickenlooper
Governor
Alike King
Execu tive Director
Dick Wolfe, P.E.
Director/State Engineer
vSEP 2 2 2015
DIVISION OF RECLAMATION,
MINING AND SAFETY
This letter is in response to your application of August 14, 2015 submitted on behalf
of E-470 Public Highway Authority ("E-470" or "Applicant") requesting a substitute water
supply plan ("SWSP") for the Sandy Acres Pit currently permitted as Henderson Development
under the Division of Reclamation Mining and Safety (DRMS File No. M-80-110). This plan was
submitted pursuant to C.R.S. 37-90-137(11). The fee of $257 for the renewal of the
substitute water supply plan has been received (receipt no. 3671163).
Plan Operation
The Sandy Acres Pit is located on E -470's property in the SE1 /4 of Section 26, Township
1 South, Range 67 West of the 6 1 P.M. The mining operations at the Sandy Acres Pit resulted in
the creation of an unlined pond, as shown on the attached Figure 1. The Sandy Acres Pit is no
longer an active mining site and there are no plans for future mining. E-470 purchased the
property containing the Sandy Acres Pit in 2000 in conjunction with the construction of the E-
470 highway. This SWSP seeks to replace the evaporation depletions from the Sandy Acres Pit
using water teased from the City of Aurora ("Aurora").
Note, that the approval of this substitute water supply plan does not relieve the
Applicant and/or landowner of the requirement to obtain a Water Court decree
approving a permanent plan for augmentation or mitigation to ensure the permanent
replacement of all depletions, including long-term evaporation losses and lagged
depletions after gravel mining operations have ceased. The Applicant indicated that the
Sandy Acres Pit reclamation plan was amended on September 3, 2014 from unlined
ground water pond to backfilling the site. Therefore in order to eliminate the
evaporation depletions associated with the pit, E-470 will backfill the pit with inert
material from the Brannan Sand and Gravel Company ("Brannan") Pit 29 (DRMS M1980-
183). Based on the information provided with the renewal request of the SWSP,
backfilling operations are ongoing and are projected to be completed by September
Office of the State Engineer
1313 Sherman Street, Suite 818 • Denver, CO 80203 • Phone: [phone] • Fax: [phone]
www. water.state.co.us