1-616-510-1046 Dennis J. Gebben is a seasoned environmental consultant with 30 years of experience. A geologist by trade, Mr. Gebben began his career in 1972 with Williams & Works of Grand Rapids, MI, a public works civil engineering firm. In the 1970’s, when new environmental laws and regulations were being promulgated, Mr. Gebben was quickly elevated to…
Reedy Creek Improvement District
May 2013 – February 2014
Disney World Orlando Florida and Reedy Creek Improvement District
Efficiency and performance of the Floc Hog and Water Matrix Systems by InterfaceH2O and provided by RH Moore and Associates
Theisen Development was hired by Reedy Creek Improvement District to refurbish water control structures located throughout the Disney property. Work was contained to private areas of the property and was complicated by the limited access to trucks and equipment. In total 3 water control structures were refurbished over the span of 10 months.
To accomplish the task, the water control structure had to be sheet piled off and pumped dry. Any seepage from ground water or leakage from the sheet pile had to be pumped out, treated and released within Florida standards (29 NTUIi + background). In addition any water from rain events were also pumped out, treated and released as well as overflows from the upstream side.
Pumping was done almost on a 24/7 basis utilizing 4 and 6 inch pumps. Daily monitoring was done by the contractor with regular interval monitoring being done by RCID.
Theisen Development utilized two (2) Floc Hogs with a dispersion field on the first structure and two (2) Floc Hogs with a Water Matrix container system on the remaining structures. The Floc Hogs used polymers from APS in Woodstock Georgia that best suited the turbidity reduction needs. These were models 708X and 703d#3.
Throughout the work process water samples ranged up to 100 NTUi (some greater based on weather conditions). The background NTUi was 5 making the discharge standard 34 NTUi.
Regular monitoring from RCID showed levels within the standard through the term of the project once the Floc Hogs and Water Matrix were in place. Theisen Development estimated 40 million gallons of water was pumped and treated throughout the project with the water quality standards being met.
Typical discharge NTUi was between 8 and 14 from the Water Matrix/Floc Hog systems.