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and byproducts. The process water system will direct the process water from the <br /> dewatering screw to a three-pond settling system. Water from the third and final <br /> settling pond will be pumped back into the system at the ball mill, the beginning of <br /> the water process. <br /> Water will be tested for pH as it leaves the dewatering screen twice each day <br /> that the mill operates. Water with pH lower than 6 will be diverted to a holding tank. <br /> Quicklime (calcium oxide) will be added in a dry form and mixed within the holding <br /> tank as needed to attain a pH above 6. The quicklime will be palletized and <br /> delivered in 50-lb. bags with up to 2,000 lbs. stored on site at any one time. The <br /> pallets will be tarped and stored inside the mill building. <br /> The applicant will rely on a municipal water source, specifically the City of <br /> Idaho Springs, CO. Ms. Wonder Martell of the City of Idaho Springs executed the <br /> account documents on January 26, 2021 and are provided herein. <br /> The GTM is not a mining operation. Groundwater will not be encountered, <br /> intercepted or impacted. The mill will not discharge process water, thus not <br /> impacting the nearby surface water Clear Creek. Storm water will be managed with <br /> road side ditches from mill structures. Stormwater run-off from the interior road will <br /> be conveyed off-site via roadside ditches. <br /> Precipitation may be trapped inside the concrete containment structures for <br /> feedstock and byproduct material. The total area with potential to retain precipitate <br /> is 2100 ft2. Based on recorded average precipitation of 13 inches per year and <br /> assuming 100% of the precipitation that falls in the vicinity of the storage <br /> containment is retained, less than 0.01 acre-feet of precipitation may be diverted to <br /> the process water tank on an annual basis. Whereas this is diverted precipitation <br /> from stormwater flow by definition, it is a de minimis amount and does not warrant <br /> augmentation. Should standing water be observed in a storage area, it will be <br /> allowed to evaporate within 72 hours. <br /> The mill's objective is zero waste. GTM's products will be appropriate for <br /> beneficial end uses. Feedstock and byproducts will be characterized by TCLP for <br /> hazardous waste determination and then tested against construction material <br /> standards (Appendix E: ASTM C 33-03) for suitability for use in the construction <br /> industry. Included as Appendix A is a Letter of Intent from Mountain Property <br /> Builders to accept the mill fines. Only feedstock that passes TCLP test will be <br /> accepted for processing. No process water impoundments, stockpiles or tailings <br /> impoundments are planned for on-site waste storage. <br /> GTM will not impact the hydrologic balance as historic precipitation that is <br /> managed through engineered drainage structures, and roadside ditches. Storm <br /> water will discharge at historic rates, preventing off-site damage. The future land <br /> use is industrial/commercial that will manifest as a building and two loading areas <br /> with appropriately engineered drainage system. <br /> Explosives will not be used during milling or reclamation. <br /> Page 6 of 21 <br />