Laserfiche WebLink
The two tailings cells located on the south side of Canyon Creek are referred to as the "historic tailings" and are associated <br /> with milling activities believed to date back to the early 1900s. The third and largest tailings cell located on the north side <br /> of Canyon Creek is referred to as the"modern tailings"and was last used for disposal in the late 1990s. The modern tailings <br /> occur within the boundary of an active mining permit that is administered by the Colorado Division of Reclamation, Mining <br /> and Safety(DRMS). <br /> The Site also includes a large rock slide that is located below United States Mountain, approximately 0.5-miles above the <br /> Camp Bird 14-level along County Road 361 (which is a rough dirt 4-wheel drive road). The rock slide may be used as a <br /> source of rip rap and cover material. <br /> Site Evaluation <br /> The historic tailings cell that is furthest downstream is being actively eroded by a side drainage that flows into Canyon Creek. <br /> The slopes of both the historic and modern tailings are susceptible to erosion and instability from storm water runoff and <br /> flood events in the perennial drainages. The historic tailings are also largely uncovered making them susceptible to wind <br /> erosion. <br /> Circumstances at the Site meet the requirements for a removal action under Section 300.415(b)(2) of the National Oil and <br /> Hazardous Substances Pollution Contingency Plan (NCP). <br /> Objectives <br /> 1. Prevent erosion of tailings from 100-year flood events in the adjacent perennial streams. <br /> 2. Prevent erosion of tailings from wind, storm water runoff, and side drainages that flow into the adjacent perennial <br /> streams. <br /> Required Tasks <br /> The tasks required by this Work Plan are divided into two phases. Phase 1 addresses erosion and erosion potential at the <br /> historic tailings. Phase 2 addresses erosion and erosion potential at the modern tailings. Most deliverable dates are <br /> scheduled as the number of calendar days from the date of ratification of the AOC by Purchaser, pursuant to the Section <br /> XXXI of the AOC. Other timeline references herein are estimates and may vary depending on adverse weather conditions <br /> (e.g. high stream flows and snow cover),availability of suitable capping, rip-rap and topsoil materials,and/or delayed access <br /> from third parties. <br /> A. GENERAL PROJECT MANAGEMENT <br /> Description: Perform project management duties and general support functions. <br /> Deliverables Due Dates <br /> DRAFT Health and Safety and Emergency Notification Plans 15 days after ratification <br /> DRAFT Monthly Status Update Template 15 days after ratification <br /> DRAFT project schedule and proposed equipment/personnel. 15 days after ratification <br /> FINAL Health and Safety and Emergency Notification Plans 30 days after ratification <br /> FINAL Monthly Status Update Template 30 days after ratification <br /> FINAL project schedule and proposed equipment/personnel. May 1, 2018 <br /> Monthly Status Update Last day of each month <br /> Final Report Template February 1, 2019 <br /> Final Report March 1, 2019 <br /> Page 2 of 5 <br />