It will be necessary to fill a 300,000 yd3 depression, and the fill material must be compacted to 95% of the standard proctor (maximum) density. a 10% final moisture content is desired in either case. the unit weight of water is 62.4 lbf/ft3. (a). what would be the excavated volume of borrow from site a in place? (b). what would be the volume of borrow from site b in transport? (c). what soil would be cheaper to use? what’s the cost for the cheaper soil? (d). what is unit weight in transport from borrow site b?

An external consultant recommends that a plant installs a bank of capacitors for power factor correction. this will reduce the peak electrical demand charges by an average of 93 kw every month. the plant current pays $13 per kw in peak demand charges. the capacitor bank will include 223 kw of fixed capacitors, and 183 of variable capacitors. the fixed capacitors cost $59 per kw, and the variable capacitors will cost $65 per kw. the consultant charges 21% of the equipment costs to install the capacitors. because this project will reduce the demand for the electric utility, they are prepared to provide a one-time rebate of $42 per kw of reduced demand. what is the simple payback period for this project (in years)?