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<br />( <br /> <br />~ <br /> <br />~ <br /> <br />v <br /> <br />( <br /> <br />l <br /> <br />r <br /> <br />- 22 - <br /> <br />. <br /> <br />Structural Measures <br /> <br />The floodwater-retarding structure IW-l will be operated and <br />maintained by the sponsors. The structure will be inspected at least <br />once each year prior to the thunderstorm season and after each heavy <br />rain or streamflow to' determine maintenance needs. <br /> <br />These inspections will be made by representatives of the <br />sponsors and the Soil Conservation Service. Items to be inspected <br />will include: the principal spillway, riser_ports, and trash rack; <br />the emergency spillway; the earth-fill; and fences and gates installed <br />as a part of the structure. Written reports will be prepared itemizing <br />the maintenance needs, and a record will be kept by the sponsors <br />showing completion of recommended maintenance with copies provided <br />to the Soil Conservation Service and to the Colorado State Engineer. <br /> <br />Although the Indian Wash flood channel is not a project work <br />of improvement, it is a definite part of the planned flood prevention <br />program and, as such, the sponsors will be responsible to keep the <br />channel in safe operating condition at all times. To accomplish this <br />the Indian Wash channel will be subject to the same inspection and <br />repair procedures as set _up for the floodwater-retarding structure <br />with the sponsors providing an annual operation and maintenance fund <br />of ~500 for this purpose. <br /> <br />. <br /> <br />The estimated average annual operation and maintenance cost for <br />structure IW-l and the Indian Wash channel totals $2,387. Funds and <br />equipment for carrying out the necessary operation and maintenance <br />are available through the allocation of a portion of the annual funds <br />presently derived through the normal taxation powers of Mesa County <br />and the City of Grand Junction. The sponsors understand their <br />obligations for operation and maintenance and will execute specific <br />operation and maintenance agreements with the Soil Conservation Service <br />prior to the issuance of invitations to bid. <br /> <br />COST SHARING <br /> <br />The total estimated project cost is $482,166, of which the Public <br />Law 566 share is $431,586. Funds fram other sources will be $50,580 <br />and include local funds, as well as funds available under other <br />Federal authority. <br /> <br />. <br />