2016-05-20_GENERAL DOCUMENTS - C1981035

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I . Acknowledgement of phased limits on the daily average of outgoing trucks based on a monthly average and a daily maximum; 2. Right of way acquisition process and timing; 3. Road construction plan development and standards; 4. Construction phasing, timing and associated hauling allowances; and 5. On-going road maintenance fees due to degradation of initial improvements through applicant's ongoing use Despite many months of discussions and negotiations, GCC and the County have not been able to come to terms on the RIA and therefore CR 120 does not and will not meet the minimum county standards for the traffic volume and loading proposed and currently consumed by the GCC. The County's final draft of the proposed RIA is attached (Attachment 10). GCC's objections to this draft relate to two significant and fundamental areas related to compliance with the County's adopted code (1) long term limitations of truck traffic below 155 trucks per day; and (2) the completion of phased improvements by prescribed dates as opposed to uncertain events triggered by the future actions or inactions of federal agencies. The County's concerns with truck limitations are more fully discussed in the Compatibility section below and the issue of federal action is discussed in Section H of this report. With respect to the uncertain future actions of federal agencies, the County's position is that the improvements are necessary because the use is already underway and the public should not be prejudiced by further delay of the project becoming compliant with the adopted code; and appropriately mitigating its direct and adverse impacts. In the event future federal agency action renders the improvements unnecessary, the RIA and/or land use permit could be amended to accommodate such changes at that time. Drainage (LPLUC Sec. 74-112 to 114, Sec. 82-1691 Drainage is handled via two series of conveyance ditches. One series runs along the perimeter of the property and collects offsite drainage for down -gradient discharge. The other series of conveyance ditches collects onsite flow from 25.5 acres, approximately 14 of which are disturbed. This runoff, in addition to discharge from the boot wash portion of the bath house, flows to a sediment collection pond located in the southern, down -gradient portion of the site. The sediment pond was constructed several years ago to meet Division of Reclamation, Mining and Safety (DRMS) regulations. LPLUC regulations address volume detention rather than sediment collection (though sediment collection naturally occurs within volume -detention ponds). Therefore, to meet LPLUC requirements that the difference between the pre -developed and post -developed 100 -year flow be detained and that stormwater be discharged from the site at the historic 100 -year rate, the applicant evaluated the capacity of the sediment pond to provide the needed detention. Documentation submitted by the applicant indicates that the available, needed detention volume is a minimum of 3.2 AF, and approximately 3.75 AF of storage accommodated. Documentation further indicates a maximum discharge rate of 32 cubic feet per second (CFS), and that an installed 24 -inch outfall pipe discharges at 30 CFS. As such, LPLUC requirements for stormwater detention were determined to have been met with this application. Due to an all-weather surfacing requirement of the upper parking lot, the detention area will increase and a new drainage study and detention pond plan will be necessary (needs to be considered with completed, required site plan; see Parking section below). Note the applicant provided a copy of the current CDPHE Colorado Discharge Permit System (CDPS) permit (#COG85000). In addition to conventional stormwater, the permit addresses secondary containment for the onsite refueling and oil storage area. This area is covered, has a concrete floor, and an adjacent pit to capture and prevent any spills from entering stormwater runoff. Project No. 2012-0089 PC 4852-5627-2942, v. 3 Page 11 of 32 (DM, VS, DP)