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Transit Mix Concrete Co. <br />Site Modifications <br />Mean annual precipitation for Manitou Springs is about 2 inches greater than it is for Colorado <br />Springs, according to USGS Professional Paper 1019 "Climatography of the Front Range <br />Urban Corridor and Vicinity, Colorado". The limited data from Manitou Springs may not totally <br />represent the true differences. However, because Manitou Springs is nearer the mountains and <br />therefore more subject to the increase precipitation resulting from orographic lifting, an increase <br />of 2 inches in annual precipitation is not unusual or unexpected. <br />Average annual precipitation for Monument, several miles to the north of this site, is about 18.5 <br />inches. That provides further support to a conclusion that this site is significantly wetter than <br />Colorado Springs. This difference of nearly 5 inches is somewhat misleading because <br />Monument is near the crest of the Palmer Divide. If long term records had been kept every few <br />miles along a line between Monument and Colorado Springs, it is likely that the annual <br />precipitation curve would exhibit a steep decline immediately south of Monument followed by a <br />more gradual decline as far a Colorado Springs. <br />Five rain gage stations near Hitch Rack Ranch Quarry were located on a database provided by <br />the Community Collaborative Rain, Hail & Snow Network (www.cocorahs.orq). These 5 rain <br />gages were: <br />1. Manitou Springs 1.2 ESE, located approximately 13.6 miles north of the quarry (1/5/09 — <br />present), <br />2. Ivywild 0.6 E, located approximately 10.6 miles north of the quarry (5/22/03 — present), <br />3. Colorado Springs 3.5 S, located approximately 9.7 miles north of the quarry (7/12/11 — <br />present), <br />4. Fountain 1.8 NNE, located approximately 11.4 miles east of the quarry (8/2/10 — <br />present), and <br />5. Penrose 2.3 NNW, located approximately 16.0 miles south of the quarry (3/31/06 — <br />present). <br />The location of Hitch Rack Ranch Quarry, the above mentioned rain gage stations as well as <br />Colorado Springs Municipal Airport are shown on Figure K-1, Hitch Rack Ranch Quarry Vicinity <br />Map. Daily and monthly precipitation plots for periods between 2003 and 2016 are shown on <br />Figures K-4 and K-5. The data on Figure K-5 include all 5 stations. Table K-2 summarizes <br />precipitation data for days and periods of interest. <br />Hitch Rack Ranch Quarry Permit Application <br />February 19, 2016 K-7 <br />