Winchester Municipal Utilities March 24 th, 2016

TM # 1 – Raw Water Supply Alternatives (10/01/15) TM # 2 – Current & Future Design Considerations (10/20/15) TM # 3 – Process Selections (12/11/15) TM # 4 – SCADA System Master Plan (3/07/16) TM # 5 – Sludge Management Plan (1/25/15) TM # 6 – Chemical System Alternatives (1/29/16) Schedule Questions

Raw Water Supply Alternatives RAW WATER TRANSFER PUMP STATION & TRANSMISSION MAIN CONNECTIONS ITEMQUANTITYUNIT COST LABORMATERIALTOTAL MECHANICAL Vertical Turbine Pumps3EA$12,150$81,000$93,150$279,450 18" Ductile Iron Pipe4000LF$14$95$109$437,000 24" RJ DIP1500LF$20$130$150$224,250 24" Check Valve3EA$2,610$17,400$20,010$60,030 24" Butterfly Valve3EA$1,155$7,700$8,855$26,565 24"x24" Tee Flange3EA$921$6,142$7,063$21,190 4'Wx4'H Sluice Gate4EA$2,235$14,900$17,135$68,540 24" PRV1EA$4,500$30,000$34,500 ELECTRICAL & INSTRUMENTATION Electrical System 1LS $231,000 SUBTOTAL $1,383,000 10% $139,000 SUBTOTAL $1,522,000 OVERHEAD AND 15% $229,000 TOTAL CONSTRUCTION COSTS (ROUNDED TO THE NEAREST $10,000)$1,750,000 PROJECT 25%$500,000 OPINION OF PROBABLE PROJECT COST$2,250,000

Goals Comply with all current federal, state and local drinking water standards Comply with the 2012 Edition of the Drinking Water Standards and Health Advisories from EPS (DWSHA) Prepare for the implementation of additional drinking water regulations

Goals WATER QUALITY ParameterGoalKYDOWUnitsProcess Controls Turbidity</= 0.10</= 0.30NTUCoagulation, Sedimentation, Filtration Total Organic Carbon< 2 mg/LOxidation, Coagulation, Sedimentation, Filtration Total Iron< 0.3 mg/LOxidation, Coagulation, Sedimentation, Filtration Total Manganese< 0.05 mg/LOxidation, Coagulation, Sedimentation, Filtration Giardia sp.> 3.0 Log removal /Inactivation Disinfection, Coagulation, Sedimentation, Filtration Cryptosporidium sp.> 2.5> 2.0 Log removal /Inactivation Disinfection, Coagulation, Sedimentation, Filtration Chlorine< 4.0 mg/LDisinfection Viruses4.0 Log removal /Inactivation Disinfection, Coagulation, Sedimentation, Filtration TTHM</= 64</= 80  g/L (LRAA) Coagulation, Sedimentation, Filtration, Adsorption HAA5</= 48</= 60  g/L (LRAA) Coagulation, Sedimentation, Filtration, Adsorption Color15 CUOxidation, Coagulation, Sedimentation, Filtration, Adsorption

Recommendations Pursue recycling the filter backwash water and other eligible plant wastewaters to the amount permitted in the FBRR Will reduce energy costs since the water will not need to be pumped from the river Any additional water discharged to the stream must meet the same standard as the recycle water so no additional treatment is required through the FBRR Request permission to start the next round of cryptosporidium testing early (required in the LT2ESWTR) Design the plant so that Granular Activated Carbon (GAC) contactors and UV with peroxide (designated an Advanced Oxidation Process or AOP) can be easily added, if needed, for future regulations

Flash Mix Basins RAPID MIX BASIN DESIGN CRITERIA Number of Trains2 Stages per train2 Type of MixerVariable Speed Turbines Capacity per Train6 mgd Detention Time50 sec Volume per Stage1,736 gallons Stage Dimensions, LxWxH4.5x4.5x11.5 Design G-Value750 ChemicalsCoagulant, coagulant aid, polymer Raw Water Flash Mix # 2 Flash Mix # 1 To Flocculation Turbine Mixer Coagulant Injection

Flocculation FLOCCULATION BASIN DESIGN CRITERIA Number of Trains3 Stages per train3 Type of FlocculatorsVertical Shaft Capacity per Train1.2 mgd fpm Detention Time mgd Volume per Stage29,000 gallons87,000 per train Stage Dimensions, LxWxH* 18’x18’x12’ Design G-Value10-100

Sedimentation SEDIMENTATION BASIN DESIGN CRITERIA Type of Settling EquipmentParallel Plate Settlers Number of Trains3 Plate Packs per Train4 Volume per Train150,000 gallons Stage Dimensions, LxWxH42’x30’x16’ Design Loading Rate0.35 gpm/ft 2

Filtration FILTER DESIGN PARAMETERS Type of FiltersRapid Sand / Dual Media Number of Filters5 (n+1) Filtration RateFirm capacity = 9.9 mgd Filter Loading Rate4.5 gpm/ft. 2 at maximum flow Filter Surface Area384 ft. 2 (Each) Dimensions, LxW24 ft. x 16 ft. Media Type Effective Size (mm) Maximum Uniformity Coeff. Depth (in) Anthracite 0.95 – Sand 0.45 – Future GAC 0.55 – Type of UnderdrainLow profile, HDPE with retention cap Type of BackwashAir / Water Size of Backwash Pump80 Hp Number of Blowers2 Type of BlowersPositive Displacement Design Air Scour Loading Rate3.0 scfm/sf or (3-5 scfm/sf)

Existing WTP SCADA Recommended Action Prior to New WTP Construction Contract Transfer software license ownership to WMU (currently owned by original integrators) Diagnose & repair periodic communication failures to water tanks Repair various reporting/trending problems Upgrade to Windows 10 OS when Rockwell SCADA software upgrade is released Existing SCADA hardware (PLC system & radio) to be used for new raw water transfer station Existing SCADA computers & software to be relocated to new WTP

New WTP SCADA SCADA upgrades to support new WTP Relocate software & computers from existing WTP Increase software license display screen count from 100 to 250 Add additional client computers to support the additional buildings Implement a hot-backup SCADA display/screen server Share the Historian with LHCWWTP via VPN (cost saving measure) Utilize CompactLogix series of PLC equipment rather than ControlLogix (includes all the functionality needed at half the cost) Estimated SCADA hardware/software cost: $234,000 CompactLogixControlLogix

Sludge Management Facilities Filter Backwash Equalization Basin (375,000 gallons) Sludge Gravity Thickener (1% Solids to 4% Solids) Sludge Storage (162,990 Gal. Previously Constructed) Blended or Separated Sludge Disposal (Utilize WWTP Presses)

Potential Feed Points TM # 6 – CHEMICAL FEED SYSTEMS POTENTIAL FEED POINTS Chemical Feeds Raw Water Post Floc. Settling Basin Effluent Filter System Effluent CurrentProposed Potassium permanganate (3%) X Gaseous Chlorine Sodium HypochloriteX XX Coagulant – DelPac 2500 X None Powdered activated carbonXX pH Adjustment – Dry Lime (50 lb Bags) pH Adjustment - Liquid Lime (20%)X XX Sodium SilicofluorideHydrofluosilicic acid (fluoride) 23% X Langelier IndexPoly-phosphate (20%) X

Schedule Preliminary DesignFebruary 2016 – June 2016 Final DesignJuly 2016 – December 2016 Submit to KY Division of WaterDecember, 2016 Division of Water ReviewDecember, 2016 – January, 2017 Advertise for ConstructionFebruary 1 st, 2017 Receive BidsMarch 1 st, 2017 Award & Begin ConstructionMarch 15 th, 2017 Substantial CompletionMarch 15 th, 2019

David F. Schrader, PE Bell Engineering 859/