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Date: To: From: Prepared By: Departmental Item INDIAN RIVER COUNTY, FLORIDA DEPARTMENT OF UTILITY SERVICES April 2, 2018 Jason E. Brown, County Administrator Vincent Burke, P.E., Director of Utility Arjuna Weragoda, P.E., Capital P Subject: Van Antwerp Well Mitigation DESCRIPTIONS AND CONDITIONS: During the Spring of 2012, the Indian River County De full capacity test of the North County (Hobart)'Reversi that dry time of the year, the water plant was,able'tdiii reverse osmosis membrane filtration efficiencies. The west of the NCRO water plant'were,directly affected historically relied on a`rtes,an flow from their wells; r'e during the pumping test Asa„result, theIRCDUS, as req to mitigate this interference to,,the Vain Antwerps, a Aquifer (UFA) Suchrn;ltigation �iforts.b'ean In2012 ai anager plementation Pha artrnent:of Utility Services (IRCDUS) conducted a Osmosis (NCRO) Water Treatment Plant. During fectively tesfAts,.raw water pumping abilities and /an,Antwerp's,Panadjacent property owner, just f k �y this functional test. The Van Antwerps, who ;o'rtedly lost artesian water flow from their wells ired by its Consumptive Use Permit, was required sting legal user (ELU) of the Upper Floridan I continue today. On November 21, 2017, the Indian River County Bbdrd' of County Commissioners (BCC) approved Work Order N&.-,,,'1%,with Kimley-Horn,,`a,nd Associates (KHA) for a lump sum amount of $44,608.00 to provide professional engineering services;that included., coordination and meetings, specifications and drawings, permitting, obser,ation, and startup fora more long-term mitigation solution for the Van Antwerp properties along 81st street, just wof the NCRO plant and east of 66th estavenue. IRCDUS owns and operates two (2) regional potable water treatment facilities. The NCRO Water Treatment Plant is rated for 11'44 million gallons per day (MGD). Today, the NCRO plant operates a rotation of 3 to 4 skids (out of`'eight), fed from 5 wells (out of nine), for daily water'demands. As more people move to Indian River County, future hypothetical withdrawals may result in additional drawdowns on the Upper Floridan Aquifer (UFA). The draft mitigation plan that is presented for Board approval provides a "future proof' plan for the Van Antwerp (VA) properties owned by Mr. and Mrs. Van Antwerp. The VA properties in total have five (5) wells that were installed as far back as 1925 and as recently as 2005. The VA property is made up of six (6) parcels ranging from 0.86 to 9.0 acres for a total of approximately 28.93 acres. Currently, the three (3) homesteads and a packing house are served by County potable water. See Exhibit A (Attachment 1) which depicts the Van Antwerp Properties and well locations. Page 1 of 8 R\Utilities\UTILITY - Engineering\WATER\CUP-10524\Van Antwerp Well Mitigation\BCC Items\Agenda - Van Antwerp Well Mitigation Plan Implementation v3.docx