The improvements associated with the stream restoration project were constructed in phases, and resulted from course modifications necessary to abandon an existing entrance ramp onto I-70, extend Business Loop 70 to serve as an outer road to I-70 & US Route 63, and providing a new connection to Conley Road.  Property takings associated with the improvements required the relocation and redesign of several holes on the existing Columbia Country Club golf course, significant coordination with the US Army Corp of Engineers and other stakeholders concerned with the impacts to Hinkson Creek, preparation of a FEMA Conditional/Letter of Map Revision (C/LOMR).

As part of the golf course hole relocation, several stretches of existing stream required protection from construction activities, bank stabilization, or full relocation and restoration.  An evaluation of the stream characteristics identified a number of deficiencies including bank erosion, channel meandering, drainage structures that weren’t operating as designed, etc.  Measures to mitigate these issues were recommended and constructed over a two-year period by a combination of contractors and course maintenance staff.  Features included reestablishing drainage systems, planting of native vegetation to promote bank stabilization and water quality improvement, construction of water control structures (concrete, rock) to reduce flow velocity and create riffle pools, etc.

ES&S authored an Engineering Report (ER) to define upgrades to the waste water system at the BSA’s 450-acre Hohn Scout Camp in Morgan County, MO.  The existing property was served by individual septic tanks served by a contract sludge hauling company that regularly transported sludge to an offsite treatment facility.  Project goals included adding treatment capacity of the existing treatment system to allow for additional campers and several new facilities, including a swimming pool, shower house, a dining facility and two educational buildings.

The ER proposed incorporating some of the existing tanks and piping, and developing a Septic Tank Effluent Pumping (STEP) system, to serve a design population of 600 campers and staff.  The STEP system included additional septic tanks to provide primary waste water treatment, a system of low-head pressure and gravity sewer lines convey flow to a 35,000-gallon dosing tank, then pump effluent to a drip-irrigation, land application field for secondary treatment.  The land application field consists of multiple, equally-sized treatment zones, totaling 3.3-acres, resulting in a zero-discharge system with a design flow of 28,500-gallons per day.  The system was phased to be constructed as new facilities are built and more campers visit the Scout reservation in order to cost-effectively provide treatment capacity.

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