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Joe Lamanna <br /> July 11, 2018 <br /> Page 2 <br /> Well and Testing Background Information <br /> The A&W well(Permit No. 61793-F)was completed on July 3, 1961 (approximately 57 years old) <br /> under Permit No. 3250-F with a 36-inch diameter borehole drilled to a total depth of 39.5 feet. <br /> The permit file information for the well indicates that solid 18-inch diameter casing was installed <br /> from the ground surface to a depth of 15 feet and 18-inch louvered perforated casing was installed <br /> between the depths of 15 and 30 feet. The total depth of the well is reported to be 39.5 feet. The <br /> A&W well is constricted in the alluvial aquifer of the South Platte River and the borehole for the <br /> well penetrated top soil, gravel, clay and shale. The bedrock shale was encountered at a depth of <br /> 39 feet. <br /> In 2004, the well was repermitted under Permit No. 61793-F to allow for the current industrial and <br /> commercial uses at an approved maximum pumping rate of 500 gallons per minute (gpm)with an <br /> annual amount of 252 acre-feet per year. The well pumping is limited to 8.5 acre-feet per week <br /> pursuant to a stipulation with objectors entered in Water Court Case No. 03CW416. This volume <br /> would equal a sustained pumping rate of approximately 275 gpm. <br /> On February 2, 2018, A&W verbally provided information from Quality Well and Pump which <br /> indicated a static water level of 8 feet in April of 2014, a total well depth of 34 feet, a well rating <br /> of 424 to 443 gpm and a pump setting depth at"the bottom of the well". <br /> During both the February and June 2018 testing, the existing pump equipment, discharge and <br /> totalizing flow meter were utilized. The valve for the discharge is a butterfly valve with limited <br /> settings providing for limited flexibility in pumping rate of the well. The totalizing flow meter <br /> installed on the well reads in units of acre-feet * 0.001. Water levels in the pumping and <br /> monitoring well (located approximately 151.5 feet to the northeast of the pumping well) were <br /> measured using a combination of electronic water level indicators (m-scope) and pressure <br /> transducers. <br /> In February of 2018, Bishop-Broaden Associates, Inc. (BBA) performed a pumping test effort for <br /> the well with the assistance of Colorado Water Well (CWW) including both a step-test and a <br /> constant discharge test. The total depth of the well was measured at a depth of 39 feet below the <br /> ground surface. The top of the pump impellor assembly was estimated at approximately 31 feet <br /> below the ground surface, or approximately 8 feet from the bottom of the well. Monitoring tube <br /> equipment was installed in the A&W well as part of this testing effort to allow for fixture static and <br /> pumping water level monitoring. The operation of the well with the onsite storage tanks was <br /> confirmed, as well as observation of reported cavitation issues. Cavitation was initially observed <br /> within 30 seconds of well operation with the well pumping at rates as high as 700 gpm. During <br /> the initial step testing, minor cavitation was observed at pumping rates of 400 gpm and major <br /> cavitation was observed at pumping rates above 400 gpm. The constant discharge testing indicated <br /> that the A&W well could be operated with rates as high at 350 gallons per minute (gpm) for short <br /> periods of time without pump cavitation, and with rates of up to approximately 336 gpm and 312 <br /> gpm for pumping periods of 1-day and 30-days, respectively. <br />