Providing all materials and labor to raise the existing earthen detention structure approximately 15-feet and construct an approximately 200 foot long by 75 foot wide reinforced concrete spillway, a 12-foot x 10-foot by 40-foot tall reinforced concrete slide gate structure, reinforced concrete low flow inlet structure, reinforced concrete flow control outlet structures, 305 linear feet of 48-inch diameter ductile iron pipe, approximately 1,500 linear feet of gravel access road, 125 linear feet of 12-inch diameter HDPE pipe, plug and abandon 160 linear feet of existing 36-inch storm pipe, chimney drains, staff gauge, erosion and water pollution control, site restoration, and all other work as specified herein and as shown on the drawings.
