2009-05-26_REVISION - M1993041 (3)

Home Browse Search

reclamation is expected to end three years thereafter. The plan would allow Cemex to continue storing surface runoff in the quarry pits for use hi dust suppression in addition to using C-BT water directly. Cemex believes that the water collected and stored in the limestone and shale pits consists entirely of surface water runoff and no appreciable amount of groundwater is exposed or captured in the pits. Cemex claims the right to store water in the quarry pits under its storage right, decreed in Case No. 83CW374 ("D owe Flats Storage Right"), when in priority or as otherwise allowed under § 37-80-120(1), C.R.S. (2008) (allowing upstream out-of-priority storage). Captured water that may not be stored under Cemex's Dowe Flats Storage Right will be replaced through a surface water substitution or exchange approved by the State Engineer in accordance with § 37-80-120(2), C.R.S. (2008). Cemex owns 457 C-BT units (class C for multipurpose use) that may be used a source for substitution. 1. Replacement of i4,ater currently stored. Three limestone quarry pits in Dowe Flats have collected surface water runoff out-of- priority and may require replacement by exchange into the St. Vrain if Cemex's Dowe Flats Storage Right does not come into priority this spring. The following chart shows the surface area of each pit, the approximate volume of water stored in each, and the total surface acreage and volumes at the time of measurement by the engineering fimn of Banks & Gesso, LLC, in March 2009. Surface Acres Volume, Acre-Feet Pit #1 1.65 9.9 Pit #2 0.69 4.14 Pit #3 0.44 2.64 TOTAL 2.78 16.68 The following chart shows the amount of water pumped from the quarry pits for use in dust suppression during 2008, and January through March of 2009: Water Pumped, 2008 (acre-feet) Water Pumped, 2009 (acre-feet January 1.4 2.5 February 2.7 0.2 March 2.5 0.2 April 0.7 x May 1.2 x June 1.7 x July 1.7 x August 1.8 x September 1.4 x October 1.3 x November 3.4 x December 0.4 x TOTAL 20.3 2.9