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4. @ pt. on east side of 4th lift: <br />'top width = 8.5'; bottom width = 3'; depth = 16"; grade = 12% <br />F. West Collection Ditch: <br />1. @ pt. on west end of 3rd bench drain: <br />'top width = 13'; bottom width = 3.5'; depth # 17"; grade = 20%; riprapped <br />2. @ pt. near access road: <br />'top width = 13'; bottom width = 3'; depth = 17"; grade = 2% <br />G. Permanent Upper Diversion: <br />1. @ west end: <br />'top width = 14'; bottom width = 4'; depth = 2'8"; grade westward = 2°~; <br />more V-shaped than trapezoidal <br />2. @ approx. mid-point: <br />`top width = 14'; depth = 25"; grade westward = 2%; inside slope of outer <br />berm, 25%; inside slope of inside cut, = 65%; V-shaped as opposed to <br />trapezoidal <br />NOTE: We found a hole at the inside toe of the ditch cut, possibly <br />caused by settling or piping, located about 200' west of the junction of the <br />diversion with the old access road remnant at a bend in the diversion. <br />The hole appeared to be about 1.5' deep. <br />3. @ pt. about 200' west of east end: <br />'top width = 16.5'; depth = 2'8"; grade from this point eastward = 1 %; <br />inside slope of outer berm, 25%; inside slope of inside cut, = 70% <br />(estimated); cross-section more trapezoidal than V-shaped at this location <br />4. @ pt. About 30' from eastern end: <br />'top width = 16.'; depth = 4'9"; bottom width = 5'; cross-section trapezoidal <br />at this location <br />H. Single CMP Under Access Road 7 for east collection ditch: <br />'diameter = 32"; inlet and outlet clear <br />I. Single CMP Under Access Road 3A for east collection ditch: <br />'diameter 30"; inlet clear <br />J. Triple CMPs Under Access Road 3A for west collection ditch: <br />'dimensions 35" wide and 24" high; inlets clear. <br />9 <br />