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Sievers Pit M-77-098 SWSP, Oldcastle SW Group, Inc. Page 9 of 12 <br /> August 7, 2025 <br /> 4. For all wells included in this SWSP, the Applicant shall ensure that all well permit <br /> files are complete and valid and the uses proposed for the wells in this SWSP are <br /> consistent with the decreed and/or permitted uses. If well permits for any of the <br /> wells do not meet this standard, the permit files must be completed or valid well <br /> permits must be obtained prior to expiration of this SWSP. Should an additional <br /> SWSP be requested, the Applicant shall demonstrate that this requirement has <br /> been satisfied. <br /> 5. All pumping for dust control and aggregate washing purposes shall be measured in <br /> a manner acceptable to the Division Engineer. <br /> 6. Dewatering at this site will produce delayed depletions to the stream system. As <br /> long as the pit is continuously dewatered at a relatively constant rate, the water <br /> returned to the stream system should be adequate to offset the depletions <br /> attributable to the dewatering operation. Dewatering operations must be <br /> measured by totalizing flow meters that can accurately show the monthly volume <br /> of dewatered water that is pumped and returns to the stream. If dewatering at the <br /> site ceases, or is significantly reduced, the monthly meter readings will be used to <br /> determine post pumping depletions that must be replaced. At least 3 years prior to <br /> completion of dewatering, a plan must be submitted that specifies how the post <br /> pumping dewatering depletions (including refilling of the pit) will be replaced, in <br /> time, place and amount. Should it be determined by the Water Commissioner or <br /> Division Engineer that dewatering water is being diverted for any purpose by the <br /> operator and accounting is not adequate to show that one hundred percent (100%) <br /> of the dewatering water is returned back to the South Platte River, the Applicant <br /> will need to account for any lagged dewatering depletions at the site. In addition, <br /> if it is determined by the Water commissioner or Division Engineer that the pit is <br /> not continuously dewatered at a relatively constant rate, the Applicant must track <br /> depletions and dewatering return flows in their accounting and replace any <br /> dewatering depletions that are not offset by dewatering return flows. <br />