2019-08-27_HYDROLOGY - M1989120

• Permit No: M1989120
• IBM Index Class Name: Hydrology
• Doc Date: 8/27/2019
• Doc Name: Substitute Water Supply Plan
• From: DWR
• To: DRMS
• Email Name: PSH
• Media Type: D
• Archive: No

Amended Aggregate Industries South Platte Combined SWSP August 27, 2019
Plan I Ds 3614, 47731 3624, 47721 4616, 3437, 3376, 3650, 3668, and 5475 Page 13 of 21
City of Greeley Lease
Aggregate has previously utilized fully consumable effluent leased from the City of Greeley as
a replacement source in this SWSP. The water is discharged to the Poudre River from the City's
wastewater treatment plant. In the future, Aggregate may use leased water from the City of
Greeley if a supplemental source of replacement water is needed.
City of Longmont Lease
For this SWSP period, the use of leased water from the City of Longmont is not necessary and
is not proposed to be utilized. In the future, Aggregate may use leased water from the City of
Longmont if a supplemental source of replacement water is needed.
Godding, Dailey Et Plumb Ditch
The Applicant seeks to rely on a historic consumptive use analysis included in the SWSP
request for the Distel Pit dated November 14, 2000. The historic consumptive use analysis did not
compare actual monthly historical diversions to the monthly crop consumptive use (based on actual
weather data), and therefore is not acceptable. Prior to use of these shares as a replacement
source, the Applicant must provide a revised historic consumptive use analysis for the subject shares.
The revised analysis must also identify the lands historically irrigated by the shares.
Huett Seepage Ditch
Prior to use of these shares as a replacement source, the Applicant must provide a full
historic consumptive use analysis for the subject shares.
L.G. Everist Lease
Aggregate has previously utilized water leased from L.G. Everist, Inc. and stored in the Everist
Star Reservoir (WDID 0303325) as a replacement source in this SWSP. Everist Star Reservoir is part of
the Feit Gravel Pit (M-1977-522), and is primarily located in the SE1/ of the SWI/ and the SWI/ of the
SE'/4 of Section 26, Township 6 North, Range 66 West, 61" P.M., adjacent to the Cache la Poudre
River. The slurry wall liner for the Everist Star Reservoir was approved as having been lined to the
design standard referenced in the August 1999 State Engineer Guidelines for Lining Criteria for Gravel
Pits in a letter dated December 16, 2014 (amended March 6, 2015) and it is therefore classified as a
lined reservoir. Deliveries from the Everist Star Reservoir would be to the Cache la Poudre River via
a submersible pump. The headgate for the Greeley No. 3 Ditch is located between the point of
depletion of the W.W. Farms Pit and the Everist Star Reservoir (downstream point of release).
During times when the Greeley No. 3 Canal is calling for water, Aggregate is not permitted to use the
water released from the Everist Star Reservoir as a replacement source for depletions from the W.W.
Farms Pit.
Last Chance Ditch Company No. 2
The Applicant proposes to rely on a ditch-wide analysis of the Last Chance Ditch system
performed by W.W. Wheeler and Associates summarized in a letter report dated April 16, 1990. Prior
to use of these shares as a replacement source, the Applicant must provide a copy of said letter
report to this office for review. Please note that several subsequent change cases involving a change
of shares in the Last Chance Ditch No. 2 found the per-share historic consumptive use to be
significantly lower than the values referenced in the SWSP request. This office reserves the right to
require a new historic consumptive use analysis for Aggregate's shares.
Left Hand Ditch Company
The Applicant seeks to rely on the historic consumptive use for the shares determined in case