HYDRO22002

• Permit No: M1997058
• IBM Index Class Name: Hydrology
• Doc Date: 3/4/2004
• Doc Name: Substitute Water Supply Plan Approval
• From: OSE
• To: Leaf Engineering
• Media Type: D
• Archive: No

Mr. Forrest Leaf
March 1, 2004
Page 2
The proposed source of replacement for this pit is fully consumable Metro Wastewater
Treatment Plant (WWTP) effluent from a lease with the Consolidated Mutual Water Company
(CMWC). The Metro WWTP is located approximately 20 miles upstream of this aggregate
operation. A 0.25 percent transit loss per mile (5.0 percent overall loss) has been accounted
for in the replacement schedule totaling 21.27 acre-feet during the year this plan is in place.
A monthly breakdown of depletions and replacements is shown in the attached Table No.
2 that was submitted with your report.
I approve the proposed substitute water supply plan in accordance with Section §37-90-
137(11), C.R.S., subject to the following conditions:
This plan shall be valid through December 31, 2004, unless otherwise revoked or
modified.
2. If this plan will not be made absolute by a water court action by the plan's expiration
date, a renewal request must be submitted to this office with the statutory fee
(currently $217) at least 45 days prior to the expiration date of this plan.
3. Water that is tributary to the stream system is trapped within the boundaries of the slurry
wall. This trapped water must be dewatered back to the stream system without
consumption. Any water consumed from within the boundaries of the liner must be
replaced, except for the water retained iri the product.
4. The losses associated with this mining operation must not exceed a total of 20.2 acre-
feet for the duration of this plan approval. These losses include 10.75 acre-feet of
evaporation from the proposed exposure of 3.66 acres of groundwater, 3.31 acre-feet
of water used for dust suppression and 6.14 acre-feet of water used in concrete
hatching due to 40,000 cubic yards of concrete production. Should the lagged annual
depletions to the South Platte River exceed 20.2 acre-feet from this pit prior to the
expiration date of this plan, an amendment will need to be filed with this office.
5. Approval of this plan is for the purposes as stated herein. Any additional uses of this
water must first be approved by this office.
6. All pumping shall be measured in a manner acceptable to the Division Engineer.
7. The water commissioner responsible for the administration of this plan is Mr. Robert
Stahl, 9378 WCR 25, Fort Lupton, CO 80621, phone no. [phone]. The
applicant shall maintain daily records of all diversions, replacements, and the amount
of water used for each particular use. The applicant shall provide a report of these
records to the division engineer and the water commissioner on a monthly basis on a
form approved by them. The accounting must be submitted within five (5) calendar
days of the end of the month for which the accounting is being made.
In addition, the applicant shall submit a report from the entity making replacements;
for this plan, that entity is Consolidated Mutual Water Company (Consolidated). The
report shall include an accounting of all of the Denver Metro wastewater plant water
effluent controlled by Consolidated, showing the total volume of water under its control