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support areas, including ascale-house/office. The Division has previously mentioned in its <br />January 9, 2003 inspection report that it will need to include demolition and reclamation costs for <br />all of these features during evaluation of an adequate reclamation cost For the site, unless VCI <br />can provide written evidence of concurrence from the landowner (Doeringsfeld & Aratas <br />Partnership) and from Weld County for zoning of industriaUcommercial use for these particular <br />areas. Unless written evidence of concurrence is provided, VCI will need to include itemized <br />costs for removal of the aggregate processing plant, the concrete plant, all buildings, concrete <br />foundations, paved surfaces, fuel tanks, and non-roadable mining equipment in Exhibit L - <br />Reclamation Cost. Please respond. <br />3. The applicant has proposed that extraction will occur to within 25 feet of well heads and <br />facilities, and be backfilled as soon as practicable to create a 100 foot radius around the well head <br />for future well activities. The applicant has also proposed that excavation slopes be no steeper <br />than 1.25H:1 V and to maintain a minimum 10 foot setback from the crest of the excavation slope <br />and any potentially affected structure. In response to these proposed measures, the Division will <br />require that VCI provide a description of earth moving methods, survey controls, and <br />management measures that will be applied to assure compliance with the excavation slope <br />requirements. Specifically, the Division requests that the applicant provide the following items: <br />a) A description, in terms of the mechanics of earth moving, of how the 1.25H:1 V pit slopes <br />wilt be excavated. <br />b) A description of survey control to be employed to assure that the maximum excavation <br />slope angle is not exceeded. <br />c) A description of management procedures to be used to ensure heavy equipment operators <br />aze continuously aware of the excavation slope angle requirement. <br />d) A description of the oil and gas pipelines referenced in the amendment application. In <br />particulaz, are all of the pipelines within 80 feet of the excavation limits low capacity, low <br />pressure, small diameter flow lines? Or, are there any high pressure gas lines in the <br />vicinity? If there aze high pressure lines, additional protections and monitoring programs <br />may be required. <br />(It should be noted that the Division will consider mining at an excavation slope of steeper than <br />1.25H:1 V within 80 feet (two-times the anticipated maximum pit depth) of a structure, to be a <br />serious violation of the Hermit that will initiate an immediate enforcement action.) <br />4. The original Extraction Plan Map, Drawing 2 of 3, Dated 10/20/77 specifies that no excavation <br />or processing of sand and gravel shall be permitted neazer than 10 feet to the boundary of <br />adjacent property, easement or irrigation ditch right of way, nor neazer than 125 feet to any <br />existing residence, unless by written agreement the owner or owners of such adjacent property <br />consent to a lesser distance. Please indicate if the applicant will incorporate this standard in the <br />proposed amendment application and continue to follow this standard during all future mining <br />and excavation at the Durham Pit. <br />5. The applicant has indicated (and shown on the Exhibit C -Mining Plan Map) that there aze <br />