CLIENT NAME - Sarasota.WaterAtlas.org

Table 2.1Summary of Carlton WTF Design ParametersTypeParameterValueHorizontal, split caseCapacity, gpm 4,000Pump head, ft 182Motor size, hp 250Pump speedVariableNotes: 1 Information obtained from Carlton Water Treatment Plant/Wellfield Operation and MaintenanceManual, Boyle Engineering, 1995.2 Information obtained from Aquamite 120 Operations and Maintenance Manual, Ionics, 1994.2.3.1.1.1 Groundwater PumpingThe Carlton Wellfield has 14 active permitted wells. Withdrawals for each well range from350 gpm to 2,300 gpm, and an operational use matrix has been developed to utilize somewells while others rest. Under current typical facility production, four to six wells are utilizedat any given time. The configurations are rotated on a regular basis. Production wells rangein their water quality, pump speed and type, withdrawal rate, and aquifer source. A wellfieldmanagement plan has been developed to optimize the wellfield operation and to avoidstressing particular areas of the wellfield. Chloride trigger levels were also established tocontrol the effects of withdrawals and to provide proper resting times for each well. Chloridetrigger levels are established guidelines to control the effects of wellfield withdrawals.According to the County’s WUP, if the 3-month average chloride concentration for a wellexceeds its trigger, or if the chloride concentration exhibits a 6-month increasing trendabove the trigger level, the well is to be rotated out of service for 30 days. If at this time thechloride concentrations are not below the trigger, the Southwest Florida WaterManagement District (SWFWMD) is contacted for additional evaluation.The pumps are rebuilt every five to six years for preventative maintenance or more often ifproblems develop. All wells were recently upgraded with mechanical seals. Furtherinformation regarding the Carlton Wellfield including well capacities and raw water quality isprovided in Appendix A.Raw water is pumped from the wells to the degasification system through a 24-inchpipeline.FINAL - August 31, 2005 13H:\Client\SAR Co_SAR\6873C00 WATER SUPPLY MASTER PLAN UPDATE\Deliverables\TM 2 - Water System Assets\Final\TM2 Final.doc