Watershed Work Plan for Watershed Protection and Flood Prevention West Cherry Creek Watershed

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—i5— PROVISIONS FOR OPERATION AND MAINTENANCE Land Treatment Measures Land treatment measures will be installed and maintained by the landowners and operators of the farms and ranches on which the measures are applied under agreement with the Cherry Creek Soil Conservation District. Repre= sentatives of the Soil Conservation District Soil Conservation Service Forest Service, and Colorado State Forest Service will make periodic inspections of the land treatment measures to determine maintenance needs and will encourage landowners and operators to perform periodic maintenance. Structural Measures for Flood Prevention The structures will be operated and maintained by the sponsors. All structures will be inspected at least once each year prior to the thunderstorm season and after each heavy rain or streamflow to determine operation and maintenance needs. The inspection will be made by representatives of the sponsors and the Soil Conservation Service. Items to be inspected will include: the principal spillway, riser ports, and trash rack; the emergency spillway; the earth -fill; the vegetative cover of the earth -fill and emergency spillway; and fences and gates installed as a part of the structure. Written reports will be made itemizing the maintenance needs and a file will be kept by the sponsors showing completion of recommended maintenance with copies provided to the Colorado State Engineer. Authorized representatives will have free access to inspect the structures. The estimated average annual operation and maintenance cost based on long- term prices, for Construction Unit No. 1 is $445 and for Construction Unit No. 2 is 'p'805 ( Table 6) . The sponsoring organizations understand their obligations for operation and maintenance and will execute specific operation and maintenance agree- ments with the Soil Conservation Service prior to the issuance of invitation to bid. COST - SHARING The total estimated project cost is $497,798 of which the Public Law 566 share is $320,336 or 64.4 per cent and the local or "Other" share is $177,462 or 35.6 per cent. Other interests will apply the needed land treatment measures for reduction of erosion and peak rates of runoff at an estimated cost of $127,620. Cost sharing assistance from other Federal programs for applying these land treatment measures will be utilized. In addition Public Law 566 funds will provide technical assistance in the amount of $21,500 during the installation period to accelerate the installation of land treatment measures included in the plan. The entire cost of construction of the structural measures, amounting to an estimated $235,304 will be paid from Public Law 566 funds. The required local or "other' costs, consisting of the value of land, easements, and rights -of -way the cost of administering contracts, and the capitalized value (capitalized at 2 2 per cent interest) of operation and maintenance of works of improvement are estimated at $49,54 . The value of installation services to be provided by Public Law 566 funds is estimated to be 663,532.