Ottumwa Generating Station Pond Closure and Wastewater Treatment Facility

28 acres pond closure

5,000 linear feet of silt fence

Dewatering and stormwater management system

250,000 cubic yards of CCR material removal to main ash pond

115,000 cubic yards of CCR material removal in main pond

130,000 cubic yards of earthen berm construction

130,000 square yards of GCL liner

128,000 square yards of 60 MIL LLDPE liner installation

200,000 square yards of geotextile installation

40,000 tons of granular cover

3,500 cubic yards of concrete pavement

41,200 tons rip-rap

175,000 cubic yards of CCR material graded in place for closure

83,000 cubic yards of compacted cover soil placement

35,000 cubic yards of topsoil placement

5,900 linear feet of access road grading and stone placement

31,000 square yards hydroturf

40 acres of seeding and mulch 

Ash water pump recycler and above-grade enclosure

Piping to main ash pond 

Ash water pump discharge lines 

Electrical cables from main ash pond to the plant

Concrete slabs and pads around new power plant structure