CLIENT NAME - Sarasota.WaterAtlas.org

2.3.1.6 Planned Future Upgrades or ModificationsThe Carlton WTF is in various stages of investigating or implementing several projects toimprove the facility’s efficiency and production. These projects include:• The original average day design capacity of the Carlton WTF was 8.0 mgd with apeak day capacity of 12.0 mgd. Recently, the County has investigated the use of newmembranes and/or the expansion of the existing trains to obtain additional treatmentcapacity. An increase in the Carlton Wellfield Water Use Permit also would berequired. New membrane spacers could increase the capacity of the units whilereducing maintenance requirements and producing higher quality water. Anevaluation by GE Ionics will determine the efficiency and product water quality ofretrofitting the existing EDR units with new spaces, as well as with the new generationof EDR equipment. A summary of the options provided by Ionics will be provided inTM3 - Water Supply Projects, which will discuss the alternatives for additional watersupply.• The facility is in the midst of a VFD upgrade, which will include installing 20 newVFDs throughout the facility. The 4 high service pump VFDs were replaced in June2005. The 6 high pressure feed water pump VFDs will be replaced in September2005. These VFDs are located in an enclosed building next to the sedimentationbasin and feed pumps. During construction, the VFDs will be placed upon newlyconstructed concrete pads in order to raise their elevation. The current floor elevationis too low, which allows water to contribute to corrosion. The wiring to the pumps willalso be pulled and replaced during this facility upgrade. Ten additional VFDs arescheduled to be replaced throughout the facility in the next few years. The feed waterpump VFDs are scheduled to be replaced in October 2005.• An additional ground storage tank will be constructed in 2007. Plans for a new highservice pump station also are being considered, although this project would occurafter the completion of the ground storage tank.• Infrared scans on breakers and electrical equipment have been completed in the paston some facility equipment and have provided an opportunity to identify problemsbefore they become a large maintenance issue. Facility staff are consideringimplementing a program to conduct regular infrared inspections on all facilityequipment.• A chemical strip was performed on the dual-media pressure filters in 2002. The filtersexperienced little filter media loss, and it appeared to be a good way to rejuvenate thefilters. Facility staff plan to continue this on a regular basis every 2 to 3 years toextend media life.FINAL - August 31, 2005 19H:\Client\SAR Co_SAR\6873C00 WATER SUPPLY MASTER PLAN UPDATE\Deliverables\TM 2 - Water System Assets\Final\TM2 Final.doc