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_-~ BBA water consultants BISHOP-BROGDEN ASSOCIATES, INC. February 6, 2007 Alan Berryman Northern Colorado Water Conservancy District 200 Water Avenue Berthoud, CO 80513 Dear Alan: Michael A. Sayler Christopher j. Sanchez RECEIV EP jefErey A. Clark 2007 Charles E.Stanzione ~~ Robert E. Brogden WAEERR6~Pi•QS SEATE ER~~xtER C4lR On behalf of our client, Loveland Ready-Mix Concrete, Inc. (LRM), we are requesting your approval of the use of leased Colorado-Big Thompson (C-BT) water for the Larimer Pit (MLR No. M-74-069) substitute water supply plan (SWSP). On May 16, 2006, you approved our request for use of leased water in LRM's 2006 SWSP. LRM is in the process of applying for their 2007 SWSP in which they will again need your approval to use leased C- BT units. This will be their second year ofthe £ve year allowable use of Project water. LRM has secured a lease of C-BT water with the City of Loveland. The attached lease provides LRM with a total of 67 ac- ft based on a need for 33.16 ac-ft net depletion, a return flow protection factor of 100% of the net depletion, and no river shrink (per conversations with the water commissioner). We have also included a copy of the January 11, 2007 S WSP and the January 30, 2007 revision which specifically outlines our anticipated use of the credits (see Table 5). Based on our understanding of the interim rule, we believe that this lease and use of C-BT credits should be acceptable to NCWCD. Before approving LRM's S WSP, the State requires a letter ofapproval for the use of these C-BT credits from NCWCD. We would appreciate your expedited review of this use and a formal approval letter which we can submit to the State along with the lease agreement. Very Truly Yours, BISHOP-BROGDEN A'S/SOCIATES, INC. `~ ~~CI/~lf/t Miranda C. Larsen, E.I.T. Water Resources Engineer MCL/jeb Enclosure cc: Stephanie Haenny Ionana Comaniciu 9641.01