9/24/1991 - Laserfiche WebLink

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DATE: SEPTEMBER 16, 1991 TO: JAMES E. CHANDLER COUNTY ADMINISTRATOR FROM: TERRANCE G. PINT DIRECTOR OF UTI TY RVICES PREPARED ROBERT O. WISH'MEN, P.E Rod AND STAFFED ENVIRONMENTAL ENGINEER BY: DEPARTMENT OF UTILITY SERVICES SUBJECT: WEST/CENTRAL REGION REUSE WATER TRANSMISSION MAIN IRC PROJECT NO. US -91 -12 -ED BACKGROUND On June 18, 1991, the Board of County Commissioners approved to - advertise a Request for Proposal for selection of, and provided timing is right, negotiation with, an engineering consultant for the above -referenced project. (See Attachment No. lam) ANALYSIS The present average daijy flow to the West Regional Wastewater Plant is 0.527 MGD; with peak flow at 0.764 MGD. The West Region Wastewater Treatment Plant will receive an instant 0.244 MGD additional sewer flow as a result of Heritage Village and possible Countryside North Mobile Home Park connections to the County system. This will bring the peak flow requirements to 1.008 MGD. This will necessitate starting the construction of the 1 MGD expansion of the plant. The permitted effluent disposal capacity at the County sod farm is 0.58 MGD. The percolation ponds and citrus groves are disposing 0.19 MGD. This situation will result in a 0.24 MGD deficit, which we must dispose of somewhere else. The present D.E.R. permitted capacity against the plant is 1.25 MGD (1.37 MGD with the permitting of Countryside North Mobile Home Park). An additional .298 MGD (1,190 ERUs) is reserved but not permitted against the plant. The total permitted and reserved capacity is 1.668 MGD. The ongoing negotiation with the grove owners nearby the plant is very slow in progressing. It is caused by the grove owners' skepticism about the possibility of adverse impact to their product marketability. As a result of this situation, and the immediate need for additional effluent disposal, the Department has reviewed the Effluent Master Plan for alternative recommendations. On Page 6-20, the master plan did not recommend the 11 miles interconnection of both regions. However, the Effluent Master Plan recognized that sufficient grove irrigation might not develop on a timely basis and recommends a secondary option. The recommended secondary option is to bring the reuse water to the State Road 60 area (see Attachment No. 2, Page 6-18). This line is called "an optional interconnect line". Jo Ann Jackson, P.E., with Post, Buckley, Schuh and Jernigan, Inc., stated in her letter dated March 27, 1991, "As with all master plans, it was prepared to be flexible to accommodate changing conditions in the County." - The Master Plan also recommends bringing reuse water from the Central Region Wastewater Treatment Plant serving Bent Pine Golf Course as part I of Phase I piping and continuing with the recommendation of serving _ groves along 66th Avenue as Phase II transmission main. This pipe it would then interconnect with the pipe from West Region at the intersection of 66th Avenue and 33rd Street. The Central Region alternate effluent disposal, Indian River County Project No. US -90 -23 -ED, Phase I, soil investigation, as part of the reclaimed water recovery disposal (REWARD) project, indicates that Bent Pine Golf Course has a 0.588 MGD disposal capacity. The disposal capacity on.32 acres rapid infiltration basin (RIB) is 0.4 MGD with possibility for an increase to 1.2 MGD with the well extraction method. 77 S F P 11