2009-04-03_HYDROLOGY - M1977436

• Permit No: M1977436
• IBM Index Class Name: HYDROLOGY
• Doc Date: 4/3/2009
• Doc Name: Combined Replacement Plan
• From: OSE
• To: Applegate Group, Inc.
• Permit Index Doc Type: Hydrology Report
• Media Type: D
• Archive: No

Jared Dains
South Platte Combined Replacement Plan
April 2, 2009
Page 7
grass. Using a Blaney-Criddle analysis the potential crop consumptive use for the 85 acres was
determined to be 142 acre-feet. Assuming a 10% ditch loss and 55% farm efficiency the dry year
consumptive use was determined to be 99.3 acre-feet. The applicant will utilize all 240 shares in
this plan.
Before:any credit can be taken for the Boyd & Freeman Ditch, accurate measuring and recording
devices must be installed and those devices must be approved by George Varra, the District 3
Water Commissioner. You indicated that an augmentation station will be installed by April 2009. If
the Boyd & Freeman augmentation station will not be installed Aggregate will request more water
from the City of Greeley and the Boyd and Freeman shares will not be used for replacement
purposes during this plan period.
City of Greeley Lease
The Applicant has leased 17.87 acre-feet of fully consumable replacement water from the City of
Greeley. As mentioned above, if the Boyd & Freeman augmentation station will not be installed
Aggregate will request more water from the City of Greeley.
Additionally, pursuant to the mining lease Agreement between Aggregate and the City of Greeley
for the East 8th Street Pit, the City of Greeley will provide augmentation water for this pit. In 2009
the replacement obligation for this pit totals 8.3 acre-feet and you are requesting a block release in
October.
St. Vrain River
Replacement Sources Projected
2009 Yields
acre-feet Comments
Coffin & Davis Ditch 328.5 100% ownership
Smith ;& Emmons Ditch 91.65 1.5 shares total
Leggett Reservoir. 33.00 16.5 shares total
City of Longmont Lease 0.0 Annual lease if necessary
Coffin & Davis Ditch
The Coffin & Davis Ditch is currently owned by the City of Longmont (21.55%), Don Sherwood
(47.55%) and Aggregate (30.99%). Pursuant to a 1999 mining lease agreement with the City of
Longmont, Aggregate has the right to use their 21.55 percent of Coffin & Davis. Pursuant to a
1993 mining lease with Don Sherwood, Aggregate has the right to use 47.55 percent of the Coffin
& Davis Ditch. Mining has permanently removed the historically irrigated area from irrigation.
Assuming a 10% ditch loss and 55% farm efficiency the dry year consumptive use was determined
to be 328.5 acre-feet.
Smith & Emmons Ditch
Aggregate owns 1.5 of 8 total outstanding shares in the Smith & Emmons Ditch Company. The 1.5
Smith & Emmons Ditch shares were historically used to irrigate 68 acres of pasture grass. Using a
Blaney-Criddle analysis the potential crop consumptive use for the 68 acres was determined to be
108.7 acre-feet. Assuming a 10% ditch loss and 55% farm efficiency the dry year consumptive use
was determined to be 91.65 acre-feet.
The applicant may only utilize the 1.5 shares of Smith & Emmons Ditch at such time as all required
measurement and bypass structures have been installed and approved by the water commissioner.