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Jared Dains <br />South Platte Combined Replacement Plan <br />March 14, 2012 <br />Distel Pit <br />(St. Vrain Basin) <br />Tull Pit <br />(St. Vrain Basin) <br />W.W. Farms Pit <br />(Lower Poudre Basin) <br />F- Street Pit <br />(Lower Poudre Basin) <br />East 8th Street Pit <br />(Lower Poudre Basin) <br />Page 4 <br />Status: Mining operations at the Distel Pit were completed in 2011 and <br />reclamation is in progress. Depletions covered by this SWSP include <br />lagged depletions from dust control, dewatering, and past aggregate <br />production. Dewatering operations are expected to remain continual and <br />constant at a rate of 1,100 gallons per minute while reclamation activities <br />continue. The City of Longmont has assumed the augmentation <br />responsibilities for lagged and future depletions of evaporation. Longmont <br />has filed an augmentation plan in water court (case no. 09CW271) and is <br />responsible for obtaining a separate SWSP in conjunction with their court <br />case. <br />Exposed Ground Water Surface: 69.2 acres (Longmont's responsibility) <br />Active Dewatering: Yes <br />Status: Mining operations have not started at Tucson South Pit, and are <br />not anticipated to commence until after 2012. This SWSP covers no <br />depletions at this site. <br />Exposed Ground Water Surface: 0.0 acres <br />Active Dewatering: No <br />Status: Mining operations at the W.W. Farms Pit (aka Riverview <br />Resources) has been put on hold due to economic conditions. Depletions <br />covered by this SWSP include water lost due to evaporation, dewatering <br />and dust control. During Spring of 2011 the pit was flooded by the Poudre <br />River due to the high spring runoff conditions. The Applicant chose to <br />reduce the dewatering rate from 450 gallons per minute to 100 gallons per <br />minute and maintain a higher exposed surface area post -flood rather than <br />dewater back to pre -flood conditions. The entire exposed surface area is <br />assessed evaporative losses as this is an unlined pit. The Applicant has <br />filed an augmentation plan in water court (case no 90CW23) and will keep <br />this pit in this SWSP while the augmentation plan is pending. <br />Exposed Ground Water Surface: 68.0 acres <br />Active Dewatering: Yes <br />Status: Mining operations at the F- Street Pit are complete and reclamation <br />is in progress. Depletions covered by this SWSP only include water lost <br />due to evaporation as lagged dewatering and operational depletions are no <br />longer accruing to the river. <br />Exposed Ground Water Surface: 26.2 acres <br />Active Dewatering: No <br />Status: Mining operations at the East 8th Street Pit are projected to remain <br />on hold during 2012. Depletions covered by this SWSP include water lost <br />due to evaporation and post - pumping dewatering depletions. <br />Exposed Ground Water Surface: 5.8 acres <br />Active Dewatering: No <br />