Laserfiche WebLink
,• SECTION 1 -IMPOUNDMENTS <br />RULE REQUIREMENT <br />RULE 4.05.9(14), 4.05.9(14)(a), 4.05.9(17) and 4.05.9(18) <br />• 4.05.9(14) all impoundments shall be inspected by a qualified registered <br />professional engineer or other qualified professional specialist under the direction <br />of a professional engineer. The professional engineer or specialist shall be <br />experienced in the construction of impoundments. <br />0 4.05.9(14)(a) such inspections shall be made regularly during <br />construction, upon completion of construction, and at least yearly until <br />removal of the structure or release of the performance bond. <br />• 4.05.9(17) all impoundments shall be examined quarterly, by a qualified person <br />designated by the operator, for appearance of structural weakness and other <br />hazardous conditions. The reports shall be retained at or near the mine site, and a <br />copy of the report shall be submitted to the Division on an annual basis (permit <br />page 4.05-7). <br />• 4.05.9(18) the Division may waive the requirements of 4.05.9(17) for certain <br />impoundments if the permittee adequately demonstrates, in writing, that failure of <br />the impoundments) will not create a threat to public health and safety or threaten <br />significant environmental harm. The following provisions apply to the review <br />and approval of any waiver from the requirements of Rule 4.05.9(17). <br />Colowyo inspects all impoundments quarterly by a qualified person designated by the <br />operator, for appeazance of structural weakness and other hazardous conditions. The <br />reports are retained at the mine site, and copies of the reports are submitted to the <br />Division in Exhibit lA of this Annual Report. <br />Colowyo submitted a CDPS Permit Renewal on November 20, 2003 to the <br />CDPHE-Water Quality Control Division (WQCD). The WQCD instructed <br />Colowyo to operate under the previous CDPS permit which was to expire on <br />March 31, 2004 until the cun•ent Permit Renewal was approved. The new <br />CDPS Permit was issued and signed on January 24, 2005. The Effective Date <br />of the new CDPS Permit (No. CO-0045161) was March 1, 2005 and expires <br />on midnight, February 29, 2010. <br /> <br />GENERAL DISCUSSION <br />CDPS Impoundments -During calendar year 2006, the ten CDPS impoundments were <br />inspected on a quarterly basis. Routine maintenance was performed when <br />necessary during the yeaz. None of the impoundments displayed any structural <br />weakness or otherwise hazardous conditions. Six other non-CDPS impoundments <br />were inspected on a quarterly basis as per guidelines. None of these <br />impoundments displayed any structural weakness or otherwise hazardous <br />conditions. <br />CF 17.14 2006 <br />