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HomeMy WebLinkAboutNC0069841_Annual Performance Summary 2015_20150910 August 2015 UNION COUNTY, NORTH CAROLINA DEPARTMENT OF PUBLIC WORKS R-CEIVED/DENR/DWiz SEP 10 2015 ` Water Quality Permitting Sedor ti WASTEWATER SYSTEM PERFORMANCE SUMMARY (FISCAL YEAR 2014-2015) Wastewater Plants Collection System Twelve Mile Creek WRF— NCO085359 WQCS00054 Crooked Creek WRF — NCO069841 Olde Sycamore WRF—WQ0011928 BioSolids — Land Application Tallwood WWTP— NCO069523 WQ0007486 Grassy Branch WWTP— NCO085812 Hunley WWTP— NCO072508 August 2015 RECEIVEDIDENRIDWR TABLE OF CONTENTS SEP 10 2015 Water Quality Permitting Section 1.0 INTRODUCTION 2 2.0 DEFINITIONS 2 3.0 SYNOPSIS OF WASTEWATER TREATMENT FACILITIES 4 3.1 Twelve Mile Creek Water Reclamation Facility 4 3.2 Crooked Creek Water Reclamation Facility 4 3.3 Hunley Creek Wastewater Treatment Plant 4 3.4 Olde Sycamore Water Reclamation Facility 5 3.5 Tallwood Estates Wastewater Treatment Plant 5 3.6 Grassy Branch Wastewater Treatment Plant 5 TABLE 3-1 6 TABLE 3-2 7 TABLE 3-3 8 TABLE 3-4 9 TABLE 3-5 10 TABLE 3-6 11 4.0 BIOSOLIDS MANAGEMENT 12 5.0 SYNOPSIS OF WASTEWATER COLLECTION SYSTEM 12 Union County Wastewater Page 1 of 15 Performance Summary FY 14-15 August 2015 1.0 INTRODUCTION House Bill 1160, the Clean Water Act of 1999, was ratified by the North Carolina General Assembly on July 20, 1999 and signed into law by the Governor on July 21, 1999. This legislation placed significant reporting requirements on entities that own or operate wastewater systems. This Performance Summary is intended to establish compliance with this rule. Union County Public Works (UCPW) is charged with the management, operation and maintenance of the County's sanitary sewer system. During the 2014-15 fiscal year the wastewater system was comprised of 5 active wastewater treatment plants (WWTP), approximately 67 wastewater pumping stations, and over 635 miles of pipe with 33,047 connections. In addition to the 5 WWTPs which have a combined rated treatment capacity of 8.15 million gallons per day (MGD), the County, through contractual agreement, has 2.65 MGD and 3.0 MGD of purchased capacity at the City of Monroe WWTP and Charlotte's McAlpine Creek WWTP respectively. Public Works' Mission Statement is as follows: Develop water, sewer and solid waste infrastructure that supports residential, commercial, industrial and agricultural needs while meeting Federal/State regulations and providing our customer base with acceptable levels of service at cost effective rates 2.0 DEFINITIONS For the purposes of this Performance Report the following definitions apply: • Aerobic —A condition in which atmospheric or dissolved molecular oxygen is present in the aquatic environment. • Automatic Telephone Dialer or ATD —A device connected to the telephone system that will call programmed telephone numbers to alert people of equipment status. • Biological Nutrient removal — The process of removing nitrogen and phosphorus from wastewater using biological processes as opposed to chemical means. • Biosolids —A primarily organic solid product, produced by wastewater treatment processes that can be beneficially recycled. The word biosolids replaces the word sludge. • BOD — Biochemical Oxygen Demand — The rate at which organisms use the oxygen in water or wastewater while stabilizing decomposable organic matter under aerobic conditions. The BOD Test is a procedure that measures the rate of oxygen use under controlled conditions of Union County Wastewater Page 2 of 15 Performance Summary FY 14-15 August 2015 time and temperature. BOD is typically used to express the "strength" of wastewater. • CL2— Chlorine Residual —The amount of chlorine present in the final effluent after disinfection. Typically measured in micrograms per liter or milligrams per liter. • D.O. — Dissolved Oxygen — Molecular (atmospheric) oxygen dissolved in a liquid. • Effluent—Treated wastewater flowing from the treatment system. • Extended Aeration —A type of wastewater treatment facility in which the wastewater is retained and treated for a minimum of 24 hours at design flow before discharge occurs. • Impeller-A rotating set of vanes in a pump designed to pump or lift water. • Inflow and Infiltration (181) - extraneous water that enters the sanitary sewer system through openings and/or defects in the collection system. • Fecal Coliform —The coliform (bacteria) found in the feces of warm blooded animals. The presence of coliform-group bacteria is an indication of possible pathogenic bacterial contamination. • MGD — Million Gallons per Day —Volumetric measurement of flow converted to millions. Example 150,000 gallons per day (gpd) / 1,000,000 = 0.150 MGD. • NH3— Nitrogen as Ammonia —A compound found naturally in wastewater. The compound is produced by the deamination of organic nitrogen containing compounds. • NPDES Permit— National Pollutant Discharge Elimination System - Permits, required by the Federal Water Pollution Control Act Amendments of 1972, which regulate discharges to surface waters. • pH —The expression of the intensity of the basic or acidic condition of a liquid. • Pump Station —A holding tank with pumps that forces wastewater uphill when flow by gravity is not possible. • Reclaimed Water— Highly treated wastewater that has undergone advanced treatment processes to remove solids, organics, and pathogens meeting the State's Health and Safety Standards for Beneficial Reuse. • SCADA—Acronym for "supervisory control and data acquisition", a computer system for gathering and analyzing real-time data. • SBR — Sequencing Batch Reactor—A type of wastewater treatment facility that treats and discharges water in batches as opposed to continuous flow. • SSO —Acronym for "sanitary sewer overflow" • Telemetry—A system by which information pertaining to remote equipment status is transmitted via radio waves to a central location. • TSS — Total Suspended Solids — Particles suspended in a liquid. Union County Wastewater Page 3 of 15 Performance Summary FY 14-15 August 2015 • Turbidity — The measurement of the clearness or cloudiness of a liquid. 3.0 SYNOPSIS OF WASTEWATER TREATMENT FACILITIES (Fiscal Year 2014-2015) During the 2014-15 fiscal year the Department of Public Works operated and maintained a total of five (5) active wastewater treatment facilities and maintained one (1) inactive facility. Although each Permit requires facility visitation daily, excluding weekends and holidays, Public Works' wastewater treatment facilities are checked 7 days per week, 365 days per year. All treatment facilities are equipped with emergency back-up power generators. In addition to SCADA, each facility has both audible and visual trouble alarms. Wastewater treatment plant staff rotate "call duty" for after hour situations that may arise. A brief overview of each facility and a performance summary table for each facility is provided herein. 3.1 Twelve Mile Creek Water Reclamation Facility Permit No. NC0085359. Twelve Mile is an extended aeration facility utilizing biological nutrient removal and tertiary filtration. Disinfection is accomplished via UV (ultraviolet light). Twelve Mile effluent is discharged into Twelve Mile Creek, which is part of the Catawba River Basin. The facility is permitted to discharge up to 6.0 MGD of treated wastewater. Twelve Mile Creek WWTP is located at 8299 Kensington Drive and serves Waxhaw as well as portions of Indian Trail, Stallings and Weddington. Please refer to Table 3-1. 3.2 Crooked Creek Water Reclamation Facility Permit No. NC0069841. Crooked Creek is an extended aeration facility utilizing tertiary filtration. Disinfection is accomplished via UV (ultraviolet light). Crooked Creek effluent is pumped over 17,000 feet to discharge into the North Fork Crooked Creek which lies in the Yadkin Pee Dee River Basin. This facility is permitted to discharge up to 1.9 MGD of treated wastewater. Crooked Creek is located at 4015 Sardis Church Road and serves the Indian Trail, Lake Park and Stallings areas. Please refer to Table 3-2. 3.3 Hunley Creek Wastewater Treatment Plant Permit No. NC0072508. The facility was taken out of service May 10, 2006, via a flow diversion project and remains inactive. Hunley Creek is located at 6913 Stevens Mill Road. Due to "Inactive Status" of the Hunley Creek WWTP, there was no data to report to Table 3-3 for fiscal year 2014-15. Union County Wastewater Page 4 of 15 Performance Summary FY 14-15 August 2015 3.4 Olde Sycamore Water Reclamation Facility Permit No. WQ0011928. Olde Sycamore is an extended aeration facility with tertiary filtration. Disinfection is accomplished via UV (ultraviolet light). This facility is permitted to discharge up to .150 MGD of treated wastewater. Olde Sycamore was "up-fitted" in early 2012 to improve operating efficiency (reduced electrical consumption) by implementing usage of fine-bubble diffused aeration versus the former "coarse-bubble" aeration. Olde Sycamore serves the Olde Sycamore Golf Community located off Highway 218 and Rock Hill Church Road. Olde Sycamore effluent is discharged to a man-made impoundment from which it is then pumped onto the Olde Sycamore Golf Course as a source of irrigation. Please refer to Table 3-4. 3.5 Tallwood Estates Wastewater Treatment Plant Permit No. NC0069523. Tallwood is an extended aeration facility with tertiary filtration. Disinfection is accomplished via UV (ultraviolet light). This facility is permitted to discharge up to .05 MGD of treated wastewater. Tallwood plant was replaced in 2013 with a new facility. Tallwood is located within and serves the Tallwood Subdivision off Brief Road and Belk Boy Scout Camp. Tallwood effluent is discharged to Clear Creek, which lies in the Yadkin Pee Dee River Basin. Please refer to Table 3-5. 3.6 Grassy Branch Wastewater Treatment Plant Permit No. NC0085812. Grassy Branch is an extended aeration facility with tertiary filtration. Disinfection is accomplished via UV (ultraviolet light). This facility is permitted to discharge up to .05 MGD of treated wastewater. Grassy Branch is located at 1629 Old Fish Road and currently serves the Unionville Elementary, Piedmont Middle and Piedmont High School as well as one individual residence, Loxdale Farms Subdivision, and Smith Field Subdivision. Grassy Branch effluent is discharged to Crooked Creek which lies in the Yadkin Pee Dee River Basin. Please refer to Table 3-6. Union County Wastewater Page 5 of 15 Performance Summary FY 14-15 August 2015 TABLE 3-1 Twelve Mile Creek Water Reclamation Facility NPDES Permit#: NCO085359 Fiscal Year: 2014-2015 Effluent Limits and Performance PARAMETER LIMIT JUL'14 AUG'14 SEP'14 OCT'14 NOV'14 DEC'14 JAN'15 FEB'15 MAR'15 APR'15 MAY'15 JUN'15 FLOW 6.0 MGD 3.20 3.14 3.37 2.98 3.51 4.21 4.60 4.47 4.24 3.88 3.59 3.65 pH 6-9 SU 7.3-7.7 72-7.8 7.1-7.8 7.1-78 7.0-7.7 7.0-7.7 7.0-8.2 7.3-7.9 6.7-7.9 7.0-7.8 7.0-8.2 7.4-7.8 BODS SUMMER(APR.1-OCT.31) 5 mg/I 20 2.1 2.0 2.7 2.2 1.4 1.1 WINTER(NOV.1-MAR.31) 10 mg/I 3.2 4.41 5.2 30 2.51 1 AMMONIA NITROGEN SUMMER 1 mg/I 0.1 0.0 0.0 0.1 1 0.1 0.2 1.0 WINTER 2 mg/l 0.2 0.04 0.0 0.2 0.0 TOTAL SUSPENDED RESIDUE 30 mg/l 6.7 3.5 5.9 4.9 6.0 8.9 9.9 6.9 8.4 3.1 1.1 0.3 FECAL COLIFORM 2001100 ml 13 47 43 20 12 19 31 10 5 9 30 15 DISSOLVED OXYGEN >6 mg/I 7.6 7.51 7.7 7.8 8.6 8.81 9.3 9.7 9.0 8.6 7.9 7.2 COPPER 13.2 ug/I 1.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ZINC 175.0 ug/I 52 50 57 34 54 48 45 63 531 69 59 59 TOTAL PHOSPHOROUS 41.7 Wday 8.61 5.51 9.38 8.73 11.49 14.34 26.93 30.12 43.251 14.88 8.09 2.75 March 2015-Monthly average exceeded on total phosphorus permit limit June 2015-Ammonia exceeded permit limit Union County Wastewater System Page 6 of 15 Performance Summary FY 14-15 August 2015 TABLE 3-2 Crooked Creek Water Reclamation Facility NPDES Permit#: NCO069841 Fiscal Year: 2014-2015 Effluent Limits and Performance PARAMETER LIMIT JUL'14 AUG'14 SEP'14 OCT'14 NOV'14 DEC'14 JAN'15 FEB'15 MAR'15 APR'15 MAY'15 JUN 115 FLOW 1.900 MGD 1.14 1.01 1.12 1.04 1.21 1 25 1.32 1 33 1.32 1.47 1.07 1.08 pH 6-9 SU 63-92 6.0-78 6.8-7.9 73-8.1 6.8-7.7 66-7.7 68-7.6 6.8-7.5 69-7.8 6.7-8.1 7.0-77 65-7.9 Clz 17 ug/I - _ _ - _ _ - - - - - - BODs SUMMER(APRA-OCT.31) 5 mg/I 22 1.31 0.8 2.0 24 81 3.7 WINTER(NOVA-MAR.31) 10 mg/I 3.9 6.7 59 4.4 4.8 AMMONIA NITROGEN SUMMER 2 mg/I 0.09 0.02 083 0.10 0.24 1.05 006 WINTER 4 mg/I 03 0.1 0.8 15 3.04 TOTAL SUSPENDED RESIDUE 30 mg/I 65 47 11 9.1 8.9 16.4 142 9.8 8.4 4.9 204 11.6 FECAL COLIFORM 200/100 ml 34 26 169 1 22 9 3 4 5 31 280 190 DISSOLVED OXYGEN >6 mg/I 7.7 7.7 77 66 9.2 9.3 931 9.4 9.0 88 8.2 7.3 July 2014-Weekly geometric mean fecal coliform exceeded permit limit September 2014-Weekly geometric mean fecal coliform exceeded permit limit October 2014-Weekly geometric mean fecal coliform exceeded permit limit November 2014-Weekly geometric mean fecal coliform exceeded permit limit May 2015-BOD,TSS,and fecal coliform exceeded permit limit June 2015-Fecal coliform exceeded permit limit Union County Wastewater System Page 7 of 15 Performance Summary FY 14-15 August 2015 TABLE 3-3 Hunley Creek Wastewater Treatment Plant NPDES Permit#: NCO072508 Fiscal Year: 2014-2015 Effluent Limits and Performance PARAMETER LIMIT JUL'13 1 AUG'13 1 SEP'13 I OCT'13 1 NOV'13 1 DEC'13 1 JAN'14 FEB'14 MAR'14 APR'14 MAY'14 JUN.14 FLOW 0.231 MGD pH 6-9 SU C12 20ug/I Hunley Creek WWTP BODS SUMMER(APR.1-OCT.31) 5mg/I is currently not in service. WINTER(NOVA-MAR.31) 10 mg/I AMMONIA NITROGEN SUMMER 2 mg/I This facility was listed as inactive as of May 2006; WINTER 4mg/I therefore, there is no data reported for this fiscal year TOTAL SUSPENDED RESIDUE 30 mg/1 FECAL COLIFORM 200/100 ml DISSOLVED OXYGEN >5 mg/I No violations for fiscal year Union County Wastewater System Page 8 of 15 Performance Summary FY 14-15 August 2015 TABLE 3-4 Olde Sycamore Water Reclamation Facility NPDES Permit#: WQ0011928 Fiscal Year: 2014-15 Effluent Limits and Performance PARAMETER LIMIT JUL'14 AUG'14 SEP'14 OCT'14 NOV'14 DEC'14 JAN'15 FEB'15 MAR'15 APR'15 MAY'15 JUN 115_ FLOW 0.150 MGD 0 049 0 049 0.052 0.047 0.051 0.049 0.054 0 046 0.045 0 052 0.049 0 055 pH 6-9 SU 67-7.5 64-7.4 6.9 -7.5 7.0-74 7.0-75 70-76 6.9-7.3 6.9-7.6 65-75 6.9-7.5 6.8-76 7.2-7.5 BODS 10 mg/I 3.8 28 3.3 4.5 3.6 6.2 3.7 4.9 3.6 31 4.2 2.2 AMMONIA NITROGEN 4 mg/I 0 101 0.0 0.1 007 0.10 0.01 0.27 0.0 0281 0.0 0.92 001 TOTAL SUSPENDED RESIDUE 5 mg/I 1.9 00 0.0 0.0 26 2.5 30 5.5 0.0 00 26 0.0 FECAL COLIFORM 14/100 ml 1 4 1 1 3 3 7 1 2 4 1 3 TURBIDITY <10 NTU 0.2 0.2 0.21 03 06 0.7 05 1.4 2.7 2.1 1.4 06 February 2015-TSS exceeded permit limit Union County Wastewater System Page 9 of 15 Performance Summary FY 14-15 August 2015 TABLE 3-5 Tallwood Estates Wastewater Treatment Plant NPDES Permit#: NCO069523 Fiscal Year: 2013-2014 Effluent Limits and Performance PARAMETER LIMIT JUL'14 AUG'14 SEP'14 OCT'14 NOV'14 DEC'14 JAN'15 FEB'15 MAR'15 APR'15 MAY'15 JUN'15 FLOW 0.050 MGD 0 023 0.021 0.017 0 018 0 230 0.028 0.039 0 041 0.043 0.042 0.022 0 018 pH 6-9 SU 6.-7.4 6 2-73 6.9-7.4 6.5-74 66-74 69-7.4 6.7-7.3 68-7.9 6.8-74 7.0-7.6 70-76 72-7.5 BODS SUMMER(APR 1-OCT 31) 5 mg/I 6.0 0.0 32 1.0 09 3.2 1.1 WINTER(NOVA-MAR.31) 10 mg/I 0.0 0.9 0.0 0.0 00 AMMONIA NITROGEN SUMMER 2 mg/I 0.1 0.0 0.17 0.0 0.06 0.76 0 051 WINTER 4 mg/I 0.0 012 00 0.0 0.03 TOTAL SUSPENDED RESIDUE 30 mg/I 1.5 00 0.0 0.0 00 26 0.0 0.0 0.0 0.0 2.4 00 FECAL COLIFORM 200/100 ml 1 0 2 1 01 1 1 21 21 1 6 1 DISSOLVED OXYGEN >6 mg/I 7.0 7.6 78 7.4 8.01 8.31 8.31 8.71 861 8.0 7.3 7.4 July 2014-BOD exceed permit limit Union County Wastewater System Page 10 of 15 Performance Summary FY 14-15 August 2015 TABLE 3-6 Grassy Branch Wastewater Treatment Plant NPDES Permit#: NCO085812 Fiscal Year: 2014-2015 Effluent Limits and Performance PARAMETER LIMIT JUL'14 AUG'14 SEP'14 OCT'14 NOV'14 DEC'14 JAN'15 FEB'15 MAR'15 APR'15 MAY115 JUN'15 FLOW 0.050 MGD 0 023 0.020 0.0345 0.026 0 024 0 036 0.051 0 040 0.047 0.036 0.026 0 018 pH 6-9 SU 7.2-7.9 7.0-7.6 64-76 6.6-7.8 62-78 6.2-7.9 6.7-7.9 6.6-7.7 6.3-7.5 6.6-7.9 6.4-8.2 7.0-8.09 Cls 17 ug/I BODs SUMMER(APRA-OCT.31) 5 mg/I 1.5 20 5 2.8 3 3.0 2.3 WINTER(NOV.1-MAR.31) 10 mg/I 22 37 4.3 5.5 166 AMMONIA NITROGEN SUMMER 2 mg/l 0.13 069 0.97 10 1 67 0.33 019 WINTER 4 mg/I 035 10 0.45 066 287 TOTAL SUSPENDED RESIDUE 30 mg/l 2.5 0.0 3 4 2.3 21 3.7 5.1 5.5 17.5 2.3 1.9 12 FECAL COLIFORM 200/100 ml 151 6 22 3 4 8 9 23 10 26 31 10 DISSOLVED OXYGEN ?6 mg/l 1 7.1 791 7.8 8.7 9.4 9.61 9.6 88 8.4 7.9 7.9 July 2014-Weekly geometric mean fecal coliform exceeded permit limit January 2015-Fecal coliform exceeded permit limit March 2015-BOD&TSS exceeded permit limit Union County Wastewater System Page 11 of 15 Performance Summary FY 14-15 August 2015 4.0 BIOSOLIDS MANAGEMENT Biosolids are managed and disposed of in accordance with Permit No. WQ0007486 issued by the North Carolina Department of Environment and Natural Resources. Biosolids are stored at both the Crooked Creek and Twelve Mile Creek WWTPs. The solids are aerobically digested and then applied as "fertilizer" to permitted sites. The solids are considered stabilized and thus suitable for land application when the volatile solids content is reduced by 38%. If this 38% volatile solids reduction can not be achieved, then alkaline stabilization, injection or incorporation is employed to insure permit compliance. Union County Public Works, through its biosolids contractor, land applied approximately 6 million gallons of biosolids. 5.0 SYNOPSIS OF WASTEWATER COLLECTION SYSTEM (Fiscal Year 2014-2015) Permit No. WQCS00054. UCPW currently operates and maintains over 635 linear miles of sewer mains, including force mains, and 67 wastewater pumping stations providing service to population of approximately 95,836 customers (33,047 wastewater accounts x an average of 2.90 people per account). All pump stations are equipped with both audible and visual alarms as well as either automated telephone dialers (ATD) or telemetry which alert staff when alarm conditions are present. Inspections of all pump stations meet or exceed State requirements. Emergency auxiliary power is provided to all stations via portable or permanent mounted generators. Union County personnel are on call rotation and available 24 hours a day, 7 days a week, and 365 days a year. Public Works is required by State permit to clean a minimum of 10% of the collection system annually to prevent and/or reduce backups and overflows. Staff has consistently surpassed that requirement, cleaning more than the required 10%. UCPW cleaned approximately 14.2% (80 miles of 563 total gravity miles) of the collection system last year. Staff also conducts inspections of the collection system with the utilization of underground closed- circuit television (CCTV) inspection equipment. These cleaning and inspection efforts allow staff to determine areas in the system that require repairs or increased maintenance to provide the proper service to our customers. FOG (Fats, Oils, and Grease) program is aimed at reducing grease-related back-ups and overflows by educating the public of the hazards associated with the disposal of grease and grease related by-products into the wastewater system. Union County Public Works, in conjunction with Union County Environmental Health, has developed a comprehensive list of food service establishments and commercial establishments. This effort will assist in development and enforcement of a grease trap inspection program ensuring Union County Wastewater System Page 12 of 15 Performance Summary FY 14-15 August 2015 that restaurants and other food preparation facilities properly maintain grease traps and interceptors. LINE MAINTENANCE (min. 10%) FEET MILES SEWER LINES CLEANED 420,412 80 CCTV MAIN LINE 10,500 2 SMOKE TESTING 16,613 3 Utility easements and right-of-ways are maintained by UCPW staff to ensure access for staff and equipment to conduct routine maintenance as well as respond to emergencies, such as sanitary sewer overflows. The easements require round-the-clock access and should not be impeded by structures such as pools (above or below ground), buildings, etc. as well as gardens, trees, shrubs, plantings, etc. Public Works staff inspects and conducts necessary maintenance, including mowing, to these easements and right-of-ways once a year, at a minimum. High priority lines such as aerial creek crossings, lines subject to erosion and/or problematic areas are visually inspected at a minimum semi-annually. High priority lines are inspected more frequently after periods of heavy rain and flooding. UCPW maintains emergency response equipment in a ready state at all times. This emergency equipment varies in nature from spare electrical parts and plumbing supplies, to vacuum trucks, pumps, and backhoes. Workers safety is of utmost importance. Safety equipment such as night lighting, gas monitors, trenching and shoring equipment, and reflective cones/signs are always readily available. UCPW has Capital Improvement Projects (CIP) to identify and correct deficiencies associated within the wastewater collection system. ❖ Grassy Branch and Twelve Mile Creek Manhole Rehabilitation project began in January 2014. The project will reduce storm water entry (inflow & infiltration — "I&I) into the sanitary sewer system reducing increased treatment and maintenance costs. This project is a part of a comprehensive "rehabilitation and repair" program in the Public Works' CIP plan to conduct necessary repairs to the collection system on an annual basis. YTD approximately $225,000 has been spent on rehabilitation efforts to over 215 manholes. Union County Wastewater System Page 13 of 15 Performance Summary FY 14-15 • August 2015 ❖ East Fork 12 Mile Interceptor project began in fall 2014. This project will increase capacity in the 12 Mile trunk sewer system resolving capacity concerns regarding current wastewater flows, while allowing for future growth. ❖ Davis Mine Creek Interceptor project began in winter 2014. This project will also increase capacity in the Davis Mine trunk sewer to handle current wastewater flows, as well as future growth. ❖ Helmsville Road Pump Station upgrade project began its design phase in early 2015. The anticipated start date for construction is December 2015, with project completion estimated in May 2016. This project consists of a new, larger wet well, new pumps, generator, and control equipment. ❖ Community Park Pump Station rehabilitation project began its design phase in late 2014. This project is to completely rebuild the Community Park pump station due to age and material concerns, as well as site accessibility. ❖ Ongoing sanitary sewer evaluation studies (SSES) throughout the collection system to identify problems and need for rehabilitation. During the Fiscal Year 2014-2015, Union County's wastewater system collected and conveyed approximately 3.05 billion gallons of wastewater. There were sixteen (16) sanitary sewer overflows with a combined estimated volume of 76,520 gallons that occurred within the collection system. Union County Public Works conveyed 99.998% of the total volume of wastewater without incident. Union County Wastewater System Page 14 of 15 Performance Summary FY 14-15 August 2015 Sanitary Sewer Overflows — Fiscal Year 2014-2015 DATE LOCATION/ADDRESS CAUSE SURFACE WATER TOTAL VOLUME WATER BODY VOLUME 7/21/2014 MH 5206, 5223, 5231 Severe Natural North Fork Crooked 4920 4920 Condition, I&I Creek 7/26/2014 9188, 9187 Grease, Debris in Line Price Mill Creek 1000 1000 9/15/2014 1913 Thorncrest Drive Roots,0 he (Third 12 Mile Creek 500 1440 2706 Bobwhite Circle Grease Rays Fork 30 30 10/14/2014 (MH 4534) 11/2/2014 3826 MonroRed-Ansonville Pipe Failure(Break) Rays Fork 0 3050 4004 Sardis Church Rd Inflow/Infiltration North Fork Crooked 9000 9680 12/24/2014 (MH 5231) Creek 12/24/2014 3005 Ashecroft Drive Inflow/Infiltration North Fork Crooked 7000 7320 (MH 5166) Creek 12/29/2014 4004 Sardis Church Rd Inflow/Infiltration North Fork Crooked 4500 4500 (MH 5231) Creek 4/2/2015 305 Waterlemon Way Roots/Grease None 0 120 4/6/2015 6215 Unionville- Indian Bell leak on force main None 0 500 Trail Rd 4/15/2015 MH 5221-5226, 5206, Inflow/Infiltration North Fork Crooked 23850 23850 5231 Creek 4/19/2015 MH 5221-5226, 5206, Inflow/Infiltration North Fork Crooked 18860 18860 5232 Creek 4/19/2015 14004 Woodfern Place Lift Station Failure Un-named Tributary 500 500 4/21/2015 6722 Olde Sycamore Pipe Failure(Break) Duck Creek 150 150 Drive 6/1/2015 7801 Avanti Drive Debris 12 Mile Creek 100 100 (MH 8378) 6/23/2015 MH 8944-8945 Third Party (Contractor) Davis Mine Creek 0 500 Total 70,410 76,520 For questions concerning this Wastewater System Performance Summary or additional information please contact UCPW: (704) 296-4210 Or write to: Union County Public Works 500 North Main Street, Suite 600 Monroe, NC 28112-4730 This document can also be viewed at: http://www.co.union.nc.us/LivingHere/PublicWorks.aspx Union County Wastewater System Page 15 of 15 Performance Summary FY 14-15 4 f 4 1 Union County, North Carolina 2015 Water and Wastewater Capacity Fee Reconciliation Data Requirements ❑ Any water and wastewater capacity fee studies conducted from 2002 to the present. Include any capacity fee analyses or calculations performed by engineers, consultants, and/or County personnel. ❑ Water and wastewater capacity fee ordinances or policy documents from fiscal year (FY) 2004 to FY 2012. This should include all policies and changes in policies related to the procedures for collecting capacity fees at the time prior to construction of the development project and prior to installation of meters. Please identify the parties responsible for paying all or a portion of the capacity fees. ❑ A history of schedules for the water and wastewater capacity fees charged by meter size from FY 2004 to FY 2012. ❑ Annual water and wastewater capacity fee fund balances for FY 2004 through FY 2012. ❑ Detailed customer billing data from the County's Customer Information System (CIS) for the 20,000 new customer accounts added between FY 2004 and FY 2012. This data should include the account number, customer name, address, meter size, and the property parcel number. If possible, please identify the development project each new customer account is associated with. ❑ County engineering monitoring records tracking new accounts from 2004 to 2012. For each account, this data should include the capacity fees paid, the development project, customer name, address, meter size, property parcel number, and water and wastewater capacities allocated to each account. ❑ Any documentation related to changes to zoning or land densities for the development projects occurring in Union County from 2004 to 2012.