5/10/1978 - Laserfiche WebLink

Home Browse Search

CITYCOUNCILWORKSHOP (Coni:' d). ing to the U.S. Geological Survey of August 1975, it is estimated that the ,hallow aquifer could sustain a continuous pumping; rate of 75 MGD throughout the county from Wabasso to south county line. Water sources in the future will have to come from areas more dis- tant from the water plant and will thus be more costly because of _ transmission of the raw water to the water plant for treatment. Mr. Little outlined the various areas in the shallow aquifer that would be possible sites for the future wells. IIe then discussed the deep aquifer and the use of one or two more deep wells whose water could be mixed with the shallow aquifer water for better taste and quality. We can achieve a total of 14 - 15, MGD, in a reasonable combination of both aquifers, from the airport... more, depending on data from monitoring wells. Insofar as treatment and T&D facilities are con- cerned, only time and money are the inhibiting factors. Present capacity is: wellfield - 10 MGD; treatment plant - 12.5 MGD; present projected 1978 peak day - 10 MGD. Current expansion program consists of achieving another 2.5 MGD of raw water supply to treatment plant and associated minor improvements to treatment plant for matching peak day. capability. Estimated completion is not later than April 1, 1979. Second phase of expansion will be needed, well field and treat- ment plant plus -transr.,ission out of plant by April 1, 1981. The water treatment plant has a maximum capability at present site of 20 - 30 MGD according to the consultants. Mr. Little stated that Council should consider the impact of regulation by EPA, DER & the PSC. Both water and wastewater plants are designated as regional plants. Both DER and EPA are committed to regionalization. It is unlikely that either plant could be expanded without continued commitment, particularly if grant funds were involved. It is probable that future rate regulation will be assumed by one of the three agencies, in which case, rate differential, ICL vs OCL, would likely be eliminated. Council should consider nutrient removal - wastewater, effluent quality and disposal - wastewater, water treatment standards, sludge disposal, and withdrawal permits - water. If South Florida Water Management District mandates the water crop theory, we can expect to be mandated to do something about high per capita use. With a 50" annual rain- fall about 12 - 13" per year is available for the water crop. This works out to 1,000 gallons per day per acre. If we are limited to our water crop,, consumption over the entire area would be limited to the 1,000 gallons per acre of mainland service area acreage. (Barrier island acreage would be excluded, as the rainfall there does not contribute to the recharge of the well area). Council then debated the projected population figures to 1990 for the City of Vero Beach, Indian River Shores and the quantities of water expected to be used by those two areas at that time. The projected population for the City of Vero Beach was 26,000 with a peak projected amount of water of 8.9 million gallons; Indian River Shores at 7 - 8,000 population the projected peak of water would be 8.8 MGD at 7,000 population. The amount of water used at the Moorings under the 1,000 one -inch equivalency taps would be estimated at 2.5 MGD. This figure was arrived at by taking 1500 households, times 2500 gallons (-the usage per household in Indian River Shores) equaling 3.7 MGD divided by 2/3 because of the smaller meter size not allowing as large a flow. The county allocation of water of 1.3 AICD plus .2 MGD with a total of 1.5 MGD for remaining; county allocation of water. The 1.3 MGD is predicated on the amount guaranteed under the bi- lateral agreement and 200,000 gallons a day is for the county areas immediately adjacent to the city which were already being; served by the City at the time of the bi-lateral agreement (such as Country Club Point) This totals 21.7 MGD projected need in the year 1990. It was noted that currently Indian River Shores uses 251"0' of the water capability of the City with 5S0' of the customers. Assuming; a 22 MCD projected need by 1990 in order to fulfill current commitments, discussion ensued on locations for potential wells to raise the City's capacity from the current 10 MGD to the 22 MCD needed. The City is currently studying; locations at the airport site for wells that would produce 2.5 million gnl.lons needed by next; year. Council was given a list of all the ptibl.icl.y-owned lands available along; the sand ridge rind agreed that the administration should :;eek option; for test wells and negotiation for water rights with the public -2- CC U tshp 4/25,/76 MY 101978 L� . BOOK 34 FAGE 40�