CLIENT NAME - Sarasota.WaterAtlas.org

2.3.1.3 Treated Water Storage and DeliveryThe Carlton WTF utilizes a 5 MG ground storage tank and a high service pump station toprovide supply to portions of southern and central Sarasota County. The high service pumpstation is comprised of four 250-hp high service pumps. New VFDs for each high servicepump were installed in May and June of 2005. Pump Station No. 6 provides furtherboosting to northern areas of the distribution system.2.3.1.4 Finished Water QualityFinished water quality data were tabulated for the Carlton WTF based on reports submittedto the Florida Department of Environmental Protection. Table 2.3 provides a summary ofeffluent water quality parameters from January through December of 2004.Table 2.3 Carlton WTF Finished Water Quality 1ParameterAverageTotal dissolved solids (mg/L) 407pH (pH units) 7.7Residual chlorine (mg/L) 4.1Notes: 1 Based on data from June 2004 through May 2005.2.3.1.5 Operations and Maintenance CostsThe primary operations and maintenance (O&M) costs at the Carlton WTF are chemicals,electricity, replacement parts, and labor for facility operation and routine maintenance. TheEDR treatment process is power and labor intensive. Carlton WTF staff stated that theaverage monthly electric power cost to operate the raw water wells and the WTF isapproximately $72,000. Based on average daily production of 6 mgd, the power cost can beestimated at approximately $0.40 per 1000 gallons.Chemical costs vary according to chemical type and dosage. Because treatment operationsmay be changing in the near future, the historical chemical costs may not be indicative offuture chemical costs. Therefore, chemical cost estimates are being developed under adifferent project being done by Carollo Engineers for the County, which is investigatingtreatment optimization alternatives using different chemicals and dosing strategies at theCounty’s water treatment facilities.FINAL - August 31, 2005 18H:\Client\SAR Co_SAR\6873C00 WATER SUPPLY MASTER PLAN UPDATE\Deliverables\TM 2 - Water System Assets\Final\TM2 Final.doc