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<br />M <br />c.~) <br />C"j <br />o <br />':~ <br /> <br />""', <br />'-' <br /> <br />CHAPTER V <br /> <br />STAGE TWO PLAN OF DEVELOPMENT <br /> <br />93-320. On salinity projects, IDC is calculated only to measure the cost <br /> <br />used in the cost effective analysis. <br /> <br />For the Grand Valley Unit, inter- <br /> <br />est was calculated using the 5 5/8 percent in effect at the time of <br /> <br />authorization. <br /> <br />For Stage One, IDC is $1,112,000 and for Stage Two IS <br /> <br />$3,680,000. <br /> <br />The total IDC for The Grand Valley Unit is $4,792,000. <br /> <br />Annual operation, maintenance, and replacement costs <br /> <br />Appraisal-level annual operation, maintenance, and replacement <br /> <br />(OM&R) cost increases for Stage Two were estimated from updated Stage One <br /> <br />projections. <br /> <br />These updated Stage One projections were compared to the <br /> <br />amortized investment portion of the Stage One annual equivalent cost. <br /> <br />This same ratio (0.56 percent) was then applied to the Stage Two amor- <br /> <br />tized investment to arrive at a Stage Two annual OM&R estimate amounting <br /> <br />to $49,000. <br /> <br />The costs of operation and maintenance (O&M) along the Government <br /> <br />Highline Canal were expected to remain essentially unchanged. O&M costs <br /> <br />of the wildlife features would include vegetation control in the acquired <br /> <br />habitat area, cleaning and maintenance at the watering pond, and fence <br /> <br />and sign maintenance at both features. <br /> <br />Along the Government Highline Canal and laterals in Stage One, O&M <br /> <br />costs were expected to decrease for such items as channel cleaning, <br /> <br />embankment stabilization, and weed control. On the canal these decreased <br /> <br />costs were expected to be nearly offset by increased costs for mainte- <br /> <br />nance personnel and materials, new expenses associated with repair of the <br /> <br />lining, and purchasing the small amount of energy neces sary for the <br /> <br />electrically operated radial gate checks and wasteways. <br /> <br />The OM&R <br /> <br />costs for the improved laterals were expected to be slightly higher than <br /> <br />50 <br />