2009-10-15_REVISION - M2001085

• Permit No: M2001085
• IBM Index Class Name: REVISION
• Doc Date: 10/15/2009
• Doc Name: Additional Info.
• From: 120th Estate Partners
• To: DRMS
• Type & Sequence: AM4
• Email Name: DB2
• Media Type: D
• Archive: No

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Martin and Wood Water Consultants, Inc.
602 Park Point Drive, Suite 275, Golden, CO 80401
Phone: [phone]. Fax: [phone]
www.martinandwood.com
Memorandum
To: Joanna Williams
From: Jacob Bauer
Date: October 7, 2009
Subject: GSL SWSP
cc: Les Ewegen
Recently, the Laramie Fox Hill (LFH) well that was supposed to augmentation supply water as
part of the Substitute Water Supply Plan (SWSP) for the GSL of Illinois Gravel Pit became
inoperable. The purpose of this memo is to revise Table 4 in the SWSP request for the GSL
gravel pit.
Revised Tables 2 and 4
Due to the fact that the LFH well cannot pump any water for augmentation purposes, additional
water will be leased from Brighton to ensure that all lagged depletions to the river are
augmented. Consequently, water used for dust control, which is currently taken from ground
water flowing into the bottom of the pit, will be included in the calculation for the lagged
depletion to the South Platte River. The revised Table 2 (attached) presents the revised total
evaporational and operational losses, which now include water used for dust control, and the
revised lagged depletions to the South Platte River which must be augmented. Because the lease
agreement with Brighton in operation for August and September did not include the lagged
depletions to the river induced by pumping water from the bottom of the pit to use for dust
control, 0.40 acre-feet less than the amount of water required to fully augment depletions was
delivered during September 2009. This water has been accounted for by adding an additional
one-time replacement obligation (One-Time Replacement Obligation B) to the volume of water
that Brighton will deliver in October 2009. The revised Table 4 (attached) presents the volume
of water that will be leased from Brighton during each month to cover lagged depletions to the
South Platte River. In the revised Table 4,. the One-Time Replacement Obligation B, along with
the information previously contained in Table 4 is presented. Additionally, the balance to the
river for each month is presented in Column 5, and on a cumulative basis in Column 6.
Martha rod wood roster Consultants, Inc.
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