HYDRO26286

• Permit No: M1980149
• IBM Index Class Name: Hydrology
• Doc Date: 3/21/2007
• Doc Name: Substitute Water Supply Plan
• From: OSE
• To: Clear Water Solutions
• Media Type: D
• Archive: No

Steve Nguyen
March 21, 2007
3. The losses associated with this mining operation must not exceed a total of 166.8 acre-
feet for the duration of this permit approval. These losses include 145.9 acre-feet of
evaporation from the proposed exposure of 56.8 acres of groundwater after December
31, 1980, 1.2 acre-feet of water used for on-site dust suppression and 4.4 acre-feet of
water lost in 150,000 tons of mined aggregate. The reclaimed area irrigated from the
lakes shall not exceed 9 acres with a consumption not to exceed 15.3 acre-feet. Should
the lagged annual depletions at this site exceed 167.8 acre-feet from this pit prior to the
expiration date of this plan, an amendment will need to be filed with this office.
4. All diversions into and out of the 112 Pit shall be measured in a manner acceptable to the
division engineer or water commissioner. The applicant shall install and maintain such
measuring devices as required by the division engineer or water commissioner for
operation of this plan.
5. The replacement water must be returned from the Rural Ditch to the St. Vrain River
through aturn-out structure approved by the Water Commissioner, preferably the existing
farm diversion point on the ditch used to divert water to the historically irrigated lands.
6. Approval of this plan is for the purposes as stated herein. Any additional uses of this
water must first be approved by this office.
7. The Water Commissioner responsible for the administration of this plan is Mr. Scott
Edgar, 1735 Dolores River Drive Windsor, CO 80550, phone [phone]. The
applicant shall maintain daily records of all diversions, replacements, and the amount of
water used for each particular purpose. 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 thirty (30) calendar
days of the end of the month for which the accounting is being made.
8. All diversions shall be measured in a manner acceptable to the division engineer. The
Applicant shall install and maintain such measuring devices as required by the division
engineer for operation of this SWSP.
9. All releases of replacement water must be sufficient to cover all out of priority depletions
and be made under the direction and/or approval of the water commissioner. The
replacement may be aggregated to maximize beneficial use. The water commissioner
and/or division engineer shall determine the rate and timing of an aggregated release.
10. The name, mailing address, and phone number of the contact person who will be
responsible for operation and accounting of this plan must be provided on the accounting
forms to the division engineer and water commissioner.
11. 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. If reclamation of the mine site will produce a permanent
water surface exposing groundwater to evaporation, an application for a plan for
augmentation must be filed with the Division 1 Water Court at least three {3) years prior
to the completion of mining to include, but not be limited to, long-term evaporation losses
and lagged depletions. If a lined pond results after reclamation, replacement of lagged
depletions shall continue until there is no longer an effect on stream flow.