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IV. Name of the person and firm analyzing the seismographic record; <br /> V. The vibration level recorded. <br /> Response: <br /> The blasting specifications will require blasting reports for each shot and require <br /> that they be retained by the operator for at least 3 years and available for <br /> inspection by the Division on demand. The reports will contain the data requested. <br /> 9. Additionally, please commit to maintaining the following information, at a <br /> minimum, for seismographic and airblast records: <br /> a. Type of instrument, sensitivity, and the calibration signal of the gain <br /> setting or certification of annual calibration; <br /> b. Exact location of instrument and the date, time and distance from the <br /> blast; <br /> c. Name of the person and firm taking the reading; <br /> d. Name of the person and firm analyzing the seismographic record; <br /> e. The vibration and/or airblast level record. <br /> Response: <br /> The blasting specifications will require blasting submittals to contain the requested <br /> information. <br /> Reclamation Plan <br /> 10. The Technical Revision application does not propose any changes to the <br /> Reclamation Plan as it pertains to the level area below the highwall where <br /> processing activities previously occurred. This portion of the mine site was heavily <br /> impacted by flooding in 2013 and currently is covered with sediment and cobble. <br /> The current Reclamation Plan calls for reclaiming this area to rangeland. The area <br /> was previously affected by mining operations and must be reclaimed. Please <br /> describe how the Operator intends to reclaim this portion of the quarry. Also, see <br /> additional comments under Item No. 1. <br /> Response: <br /> This area will be reclaimed under a future Technical Revision for a separate <br /> reclamation area as described in the response to Item No. 1. <br /> 11. The Reclamation Plan calls for constructing stormwater diversion ditches. <br /> Please affirmatively state that the Operator has acquired a discharge permit from <br /> 5 <br /> hdrinc.com <br /> 1670 Broadway, Suite 3400, Denver, CO 80202-4824 <br /> (303)764-1520 <br />