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(Page 2) <br />MINE ID # OR PROSPECTING ID # M-1980-183 <br />INSPECTION DATE 04/22/2008 <br />OBSERVATIONS <br />INSPECTOR'S INITIALS DEZ <br />This inspection of Permit Number M-1980-183 (Pit 29) was conducted by Deb E. Zack and Jared Ebert of the DRMS as part of <br />the routine monitoring protocol. Greg Gerganoff of Brannan Sand and Gravel was present during this inspection. The pit is <br />located between 132"d and Nome Streets in Brighton, CO, and currently consists of approximately 176.24 acres. <br />Concerns listed in the previous inspection report regarding the posting on the mine entrance sign and the requirement of <br />secondary containment for hazardous materials (fuel, oil, lubricants, etc.) were resolved by the time this inspection was <br />conducted. Inspectors obtained photographic proof of these corrective actions during this 4/22/08 inspection. The processing <br />area on this site has been re-situated to allow for a more organized, efficient, and stream-lined operation. <br />The Division understands that there has been significant staff turn-over since the last inspection in 2006. Therefore, the <br />following remaining concerns will be reiterated here, and revised compliance dates will be issued in this report for the <br />associated problem (see page 3 of this report for corrective action requirements and due dates). The enclosed past inspection <br />report provides the history behind this requirement. <br />In reviewing the most recent past inspection report of 11/20/2006 (enclosed) the issue of possible disruption to the hydrologic <br />balance remains unresolved. That inspection report notes that "there are damaging off-site impacts to the adjacent landowner's <br />property', and that "the grass and trees on the neighbor's property showed signs of stress." These impacts appeared to have <br />been caused by changes in the surrounding historic hydrologic balance, including the reduction of surface and ground water, <br />possibly precipitated by the installation of the two-celled slurry wall surrounding Brannan Sand and Gravel's Pit 29 operation. <br />The slurry wall surrounding this operation does not include a perimeter drain structure to facilitate drainage from mounding that <br />may be occurring at the upland extent of the operation. Based on the pumping information from the adjacent Frei operation <br />(Worthing Pit), at the time the Frei operation was pumping less water. This indicated a lower level of hydrologic recharge. <br />Rule 3.1.6(1) states that "disturbances to the prevailing hydrologic balance of the affected land and of the surrounding area and <br />to the quantity or quality of water in surface and groundwater systems both during and after the mining operation and during <br />reclamation shall be minimized." Therefore, Brannan Sand and Gravel must provide data to the Division demonstrating <br />that this operation is not responsible for adversely affecting the hydrologic balance on the adjacent landowner's <br />property. This shall be done by a providing the Division with a series of ground water monitoring data from fhe <br />piezometers located on site (see Problem No. 1 on pg. 3) as conclusive evidence that this operation has not <br />destabilized the surrounding ground water level and the hydrologic balance on or before June 1, 2008. <br />The ultimate solution required must include the equalization and maintenance of the water table, such that damage to the <br />adjacent property is limited. <br />Responses to this inspection report should be directed to Deb E. Zack at the Division of Reclamation, Mining and Safety, <br />Denver Office, 1313 Sherman Street, Room 215, Denver, Colorado 80203, phone number 303-866-4179. <br />I & E Contact Address cc~ ^ CE <br />NAME Mr. Greg Gerganoff ^ gL <br />OPERATOR Brannan Sand and Gravel ^ FS <br />STREET 2500 East Brannan Way ^ HW <br />CITY/STATE/ZIP Denver. CO 80229 ^ HMWMD (CH) <br />^ SE <br />^ WQCD (CH) <br />^ OTHER <br />cc: Tony Waldron, DRMS via a-mail <br />