ERD Environmental Research & Design :||: ERD Project



	Titusville Downtown Space View Park Stormwater Treatment Facility CLIENT INFORMATION CLIENT: City of Titusville, Florida CONTACT: Charles "Chuck" Denman, P.E. - Project Manager (321-383-5829) PROJECT DATES: 2003-2007 PROJECT DIRECTOR: Dr. Harvey H. Harper, P.E. PROJECT ENGINEER: H. Wayne Harper, P.E. FIELD OPERATIONS SUPERVISOR: Chip Harper LABORATORY SUPERVISOR: Vanessa Permaul PROJECT BUDGET AND SCHEDULE PROJECT COST: $2,044,737 CONSTRUCTION COMPLETION DATE: May 2007 PROJECT INFORMATION During June 2003 Environmental Research & Design, Inc. (ERD) was selected by the City of Titusville to perform a feasibility study and engineering design for an off-line alum stormwater treatment system for a 112 acre residential and commercial watershed in Downtown Titusville. Much of the developed area within the drainage basin was constructed prior to implementation of requirements for stormwater treatment systems, and untreated runoff from the basin discharges directly into the Indian River. The purpose of the project is to divert and treat runoff discharging through a 60 inch RCP using alum treatment and floc collection. The Phase I - Preliminary Design work efforts included: Evaluation of the historic and current project site conditions> Hydrologic characterization and modeling of the contributing drainage basin areas> Installation of automatic sampling equipment and collection of flow-weighted baseflow and stormwater runoff samples> Estimation of annual mass pollutant loadings from the drainage basin areas> Evaluation of the feasibility of using alum to maximize removal of total nitrogen, total phosphorus and total suspended solids while minimizing cost The collected runoff and baseflow samples were evaluated in a series of laboratory jar tests to determine the optimum alum treatment dose and evaluate settling characteristics. The laboratory testing indicated that the alum treatment would significantly reduce effluent concentrations of nitrogen, phosphorus, and TSS. Floc collection is provided in an off-line pond which doubles as a centerpiece for a downtown park dedicated to the space program. Capital and O&M costs were calculated for the treatment system along with mass load reductions for total nitrogen, total phosphorus, and total suspended solids. During the design phase, ERD prepared final construction drawings, contract documents, technical specifications, and opinion of cost. ERD was also responsible for overseeing bidding, construction, start-up and the initial 3 months of operation. RELEVANT WORK PRODUCTS Delineation of watershed boundaries and development of hydrologic parameters for watershed Detailed hydrologic and hydraulic evaluation of the 112-ac upstream watershed for common rain events and for the 10-year, 25-year, and 100-year design storm events Installation of stormwater monitoring equipment, collection of flow-weighted samples, and laboratory testing to evaluate optimum chemical dose and floc generation Estimation of annual mass loadings of total nitrogen, total phosphorus and total suspended solids from stormwater runoff and baseflow from the watershed Preparation of opinions of cost, annual O&M requirements, annual O&M cost, and 20-year present worth Estimated annual mass loading reductions for total phosphorus, total nitrogen and total suspended solids for the proposed alum treatment system Preparation of construction drawings, technical specifications, contract documents, and opinions of cost at the 60%, 90% and 100% completion milestones Preparation of the FDEP ERP Permit Application Construction administration, O&M and training Post-construction performance monitoring

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Titusville Downtown Space View Park Stormwater Treatment Facility