2008-03-24_HYDROLOGY - M1974069 - Laserfiche WebLink

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Northern Colorado Water Conservancy District ~. °' °` '-"- "" h d C i 2 7700 • f 970-532 0942 March 10, 2008 220 Water Avenue • Bert ou O 805 3 • 970-53 - ax Ms. Jennifer S. Lindahl, P.E. Bishop-Brogden Associates, Inc. 333 West Hampden Ave., Suite 1050 Englewood, CO 80110 Dear Ms. Lindahl: MAk ~ L ?OAffi ~1=cENV~o MAJ~ ~ 2 200 o v n, c n r+aJwU-iGEB $TRX~ 6~GtMEER Q@Lt~A Re: Approval of Request to use Colorado• Big Thompson (C-P.T) Project water in Loveland Ready- Mix Concrete, Inc. 2008 Substitute Water Supply Plan (SWSP) pursuant to the May 2005 Interim Rule. I approve the request of your client, Loveland Ready-Mix Concrete, Inc. (LRM), for the use of leased C-BT Project water in a 2008 SWSP as allowed by the Interim Rule on the Use of Colorado-Blg Thompson Project Water in Substitute Water Supply Plans and Plans for Augmentation adopted May 13, 2005, by the Northern Colorado Water Conservancy District (Northern Water) Board of Directors. The following summarizes the key issues for this approval and further requirements on the use of leased C-BT Project water in the 2008 SWSP. Northern Water staff has reviewed your request letter dated February 13, 2008, and follow-up emails. The LRM 2008 SWSP is for the augmentation of gravel pit depletions from the Larimer Pit (MLR No. M-74-069) and the Mariana Butte Pit (MLR No. M-88-033). These gravel pits are within Northern Water boundaries; therefore, LRM meets the requirement that C-BT water be used only to offset depletions that are the result of a beneficial use of water within Northern Water boundaries. The intent of the Interim Rule is to allow the annual temporary lease of C-BT in annual SWSPs, including plans for gravel pits. It should be noted, however, that the use of C-BT in a SWSP for a given structure at a specific location shall not exceed a total of five years. For its 2008 SWSP, LRM leased 9.0 acre feet for March 1, 2008, through October 31, 2008, of C-BT Project water from the City of Loveland, which is a Class B municipal C-BT Account Entity. Per the Interim Rule, the net yield of C-BT Project water leased from a municipal Account Entity for use in a SWSP is 50 percent of the net C-BT Project water delivered to the appropriate river reach for depletion replacement. This SO percent factor was appropriately applied in LRM's 2008 SWSP. LRM must provide Northern Water with an updated monthly Accounting Table showing C-BT Project water releases made for the 2008 LRM's SWSP, which ends February 28, 2009. This updated accounting should list the actual river conveyance shrinkage assigned by the Division Engineer, along with a running total of actual and projected C-BT Project water released for utilization by LRM during the 2008 SWSP. Please make certain your calculations exhibit the fact that the amount of C-BT Project