Town Of Hertford, North Carolina  SEWER AND WATER ASSET  MANAGEMENT PLAN  ADOPTED September 25, 2023  HERTFORD:    Hertford, NC  TABLE OF CONTENTS  1 Executive Summary 1.1 Purpose. 1.2 Key Findings 2.1 Background. 2.2 System Overview. 2.2.1 Sewer System. 2.2.2 Water System.  2 Background and System Overview  8 8 9 10 11 12 14 14 16 17 19 21 21 23 23 23 23 25 25 25 25 .26 26 27  3 Level of Service.. 3.1 Sewer System 3.2 Water System Sewer System Inventory 4.1 Gravity Mains. 4.2 Force Mains. 4.3 Manholes. 4.4 Lift Stations 5.1 Current State. 5.2 Forecasted State  Sewer Asset Condition Assessment  5.2.1 Closed-Circuit Television (CCTV) inspection  5.2.2 Manhole Inspection.. 5.2.3 Lift Station Assessment. Sewer Criticality and Risk Analysis  6.1 Current State. 6.2 Forecasted State  6.2.1 Regulatory Considerations.  7 Collection System Operation and Maintenance (0&M) Plan.....  7.1 Lift Station Maintenance. 7.2 Collection System Maintenance.    Hertford, NC  3 Water System Inventory 8.1 Distribution Mains 8.2 Valves 8.3 Fire Hydrants 8.4 Storage Tank.. 8.5 Groundwater Wells. 8.6 Customer Meters. 9.1 Current State. 9.2 Forecasted State 9.2.1 Leak Detection 9.2.2 Valve Exercising. 10 Water Criticality and Risk Analysis. 10.1 Current State. 10.2 Forecasted State  28 28 29 29 31 31 32 33 33 34 34 34 .35 35 36 36 36 .37 37 37 38 38 39 39 .40 40 40 40 42 .44  Water Asset Condition Assessment.  10.2.1 Regulatory Considerations. 10.2.1 Hydraulic Model Considerations.  11 Distribution System Operation and Maintenance (0&M) Plan.  11.1 Distribution Mains 11.2 Customer Meters. 11.3 Storage Tanks. 11.4 Groundwater Wells. 11.5 Valves 11.6 Hydrants. 12 Capital Improvement Plan...... 12.1 Capital Costs.  12.2 Capital Improvement Projects 12.2.1 Sewer System. 12.2.2 Water System.  13 Total CIP Estimates    Hertford, NC  LIST OF TABLES  Table 1. Hertford, NC level of service criteria.. Table 2. Sewer system design standards per NCAC.. Table 3. Water system design standards per NCAC and ISO.  10 11 13 14 16 18 19 20 22 22 28 29 30 31 31 44  Table 4. Gravity mains by diameter and material (summarized by length ini feet). Table 5. Force mains by diameter and material (summarized by length in feet).  Table 6. Manholes by depth and material Table 7. Duplex lift station design information. Table 8. Simplex lift station design information. Table 9. Condition criteria for gravity mains. Table 10. Condition criteria for force mains Table 12. Valves by diameter Table 13. Hydrants by Manufacturer. Table 14. Summary of storage tank information. Table 15. Summary of groundwater well information Table 16. List of proposed projects for the next 10 years LIST OF ILLUSTRATIONS Illustration 1. Gravity Sewer Pipe as a % of Total System Illustration 2. Forcemain Pipe size as a % of Total System. Illustration 3. Forcemain materials as a % of Total System.  Table 11. Water system by diameter and material (summarized by length in feet)  15 16 17    Hertford, NC  APPENDICES  AppendixI I- Aerial view of sewer Lines to be rehabilitated in 2024 Appendix II - Aerial view of water Lines to be rehabilitated in 2024 Appendix IV - Listing of additional priority lines for rehabilitation Appendix V - Site Plan of Hertford Wastewater Treatment plant Appendix V1 - Capital Improvements Plan with project details  Appendix III - Town Hydrant location map  LIST OF ABBREVIATIONS  AC AMP CB CI CIP CN CR CU DI EPA FM FY GALV GIS GPM HDPE ISO LF LOS LWSP MG MGD MH NCAC NCDEQ 0&M  Asbestos Cement Pipe Asset Management Plan Catch Basin Cast Iron Pipe Capital Improvement Plan Concrete-Not Reinforced Concrete-Reinforced Copper Pipe Ductile Iron Pipe Forcemain Fiscal Year Galvanized Pipe Geographicinformation System Gallons per Minute High Density Polyethylene Pipe Insurance Services Office Linear Feet Level of Service Local Water Supply Plan Million Gallons Million Gallons per Day Man hole  Environmental Protection Agency  North Carolina Administrative Code Operation and Maintenance  North Carolina Department of Environmental Quality  iv    Hertford, NC  PSI PR PVC SS SW  Pounds per Square Inch Pre-cast Concrete Polyvinyl Chloride pipe Sanitary Sewer Stormwater    Hertford, NC  RCP SCADA - SSO TC UGPJ WTP WWTP -  Reinforced Concrete Pipe Supervisory Control and Data Acquisition Sanitary Sewer Overflow Terra Cotta Pipe Underground Pipe Junction Water Treatment Plant Wastewater Treatment Plant    Hertford NC 1  Hertford Sewer And Water Asset Management  Executive Summary  1.1 Purpose  The Asset Inventory and Assessment (AIA) Grant program was authorized by NC Session Law 2015-241 and is administered by the North Carolina Division of Environmental Quality (NCDEQ), Division of Water Infrastructure. The Town of Hertford is in the process of more fully developing this Asset Management Plan and will update it as information is developed. This program is intended to encourage water and sewer utilities to become more viable and proactive int the management and financing of water and wastewater infrastructure. The program is specifically useful for assisting communities with developing asset inventories, condition assessment of critical assets, and collecting other necessary components for a comprenensive asset management program. The Town received a grant award to populate and develop a comprehensive AIA for its water and wastewater systems. Thatwoksinprogess: and whend complete will moref fully populate this document that summarizes the Townwater and wastewater systems and will: serve as the Town's Sewer and Water  Asset Management Plan (AMP). 1.2 Key Findings  The Town, with the ongoing assistance of selected consultants, has conducted an initial comprehensive review and assessment of the sewer collection and treatment system and water treatment and distribution system. More defined details and data related to these systems will be available in the coming year. This plan includes a current state and forecasted state for determination of asset conditions and a criticality and risk analysis. The assessment and analysis were used to develop the capital improvement projects and operations and maintenance strategies needed to improve the level of service offered by the Town's collection, treatment and distribution systems. This section is intended to summarize the key findings within these systems, Subsequent to current planned WWTP headworks repair/reconstructon projects significant recovery efforts/fixes are required to meet design and permitted capacities. Subsequent to 2024 Sanitary Sewer rehabilitation efforts up to 50% of the remaining sewer system gravity and force mains will require improvements consisting of some or all  and subsequent sections will describe these findings in more detail.  of:  installing clean outs at system connections points  complete line replacement manhole repairs.  Subsequent to the 2024 Water treatment plant epairs/mprovements, additional controls improvements and some system process components will need replacement or Subsequent to the 2024 water line rehabilitation efforts, lead and copper rule driven requirements will necessitate replacement of perhaps another 300% more water lines due to materials of construction. Those specifics will not be known until the full assessment of the lines is complete. More general requirements driven by age and materials of construction will require additional replacement as lines age and failures increase.  improvement.  Executive Summary  6    Hertford, NC  Hertford Sewer And Water Asset Management  2 Background and System Overview  2.1 Background  Hertford is in Northeastern North Carolina in Perquimans County, approximately twenty (21) miles southwest of the Elizabeth City. The population of the Town is approximately 1920 and accounts The Town received AIA grant awards of $150,000 to study its water distribution system, and $150,000 to study the waste water collection system in the Fall 2022 funding cycle. Additionally, the Town received $75,000 to study the merger oft the Town of Hertford and the Town of Winfalls waste water collection systems in the 2022 funding cycle. The Grant funded. Architect & Engineering consulting firm (A/E) work is inventorying and mapping in Geographic Information System (GIS), the Town of Hertford's water distribution and sewer collections systems. This data review and inventory includes manhole attributes for sewer, and hydrant information for water. That data set and GIS viewer system will not be available until the next calendar year but information from that work is included in this AMP. Meanwhile, the Town has done an initial inventory and assessment of its assets with an eye towards an update once the consultant work is complete. This Asset Management Plan documents that work. This work included a review the town's water system assets by analyzing available mapping captured in PDF format and provided to the A/E for use in the grant funded planning, field surveys of manhole locations, hydrant locations, and other field verified data. With the assistanceoft thel North Carolina Rural Water Association (NCRWA), smoke testing, visuali inspection (viacamera), ando other observations were used to assess locations, conditions, and potential concemsofp problem sewerareas. Data collected from this review was used to make an initial assessment of critical assets. Risk based decisions have been made concerning critical projects for incusion in the Town's Capital Improvements Plan (CIP). The Town has adopted an operating strategy for addressing sewer failures, sewer clogging, sewer pump station operations and maintenance to maintain services as critical infrastructure failures, and maintenance demands strain the Town's resources. These efforts  for approximately 14% of the total population in Perquimans County.  have resulted in this Asset Management Plan and includes:  Level of Service (LOS) Statement Sewer Asset Inventory Non-intrusive Condition Assessment Criticality Analysis Water Asset Inventory Non-intrusive Condition Assessment Criticality Analysis Capital Improvement Plan (CIP)  Operation and Maintenance (0&M) Plan for the Sewer System  Operation and Maintenance (0&M) Plan for the Water System  This AMP is intended to be a living document that is updated regularly. It is recommended that the data be stored within the Town's soon to be completed GIS system and be continually validated and updated to ensure that the most relevant and accurate representations of the  current system are captured.  Background and System Overview  7    Hertford, NC  Hertford Sewer And Water Asset Management  2.2 System Overview 2.2.1 Sewer System  The Town of Hertford's Sanitary Sewer system is comprised of a collection system that flows to the town WasteWater Treatment Plant (WWTP). The sewer collection system has a permitted capacity of 0.500 million gallons per day (MGD) serving approximately 1,000 customers. The collection system operates under the North Carolina Department of Environmental Quality  (NCDEQ) Collection System Permit No. WQCS00209. The sewer Collection system assets include approximately:  24 miles of gravity mains 5.4 miles of force mains 359 manholes 19 lift stations  The WWTP was originally designed for 1 Million gallons per day (MGD) of flow. The current plant was constructed in 2007 and was upgraded from a much smaller treatment facility that existed on the same site. The WWTP (see Illustration 1) is licensed to discharge treated water under The North Carolina Department of Environmental Quality (NCDEQ) permit No. NC0021849. The WWTP is a traditionally designed biological reactor plant using the following major components  int the process: 1. Headworks consisting of;  a. Bar Screens which remove fabrics and other "stringy" materials in the sewage that b. AGrit chamber which removes sediments like sand, rock, and other heavy non organic 2. Influent pump station which lifts the incoming sewer to a higher elevation SO that it can flow 3. Oxidation Ditches (02 ditches), the primary biological unit, which mixes the wastewater continuously while adding oxygen and holding the waste while biological processes convert 4. Clarifiers which receive the water from the 02 ditches and serves to settle out the solids and pass the clear water through to the next process. Most of the Solids (known as RAS, Returned Activated Sludge) are returned to the headworks by way of the RAS/WAS chamber to mix with the incoming wastewater stream. Occasionally Waste activated Sludge or WAS is sent to 5. The Clarifier discharge (effluent) is sent to a Disc filter that further removes smaller (almost microscopic) particles. This system was included ini the original plant to ensure the water that initially sprayed on an irrigation field (as final discharge from the WWTP) did not clog the sprayer heads. That irrigation has been removed from the system with NCDEQ approval. 6. Chlorine contact tanks receive the effluent from the clarifiers and Disc filter and apply chlorine to the water to kill any remaining bacteria or other pathnogenic organisms. The water remains 7. The Effluent pump station sends the fully treated water to a discharge point via pipeline to  might cause jamming or clogging.  materials that settle in larger chambers in the plant.  by gravity through the WWTP processes.  organic matter to water, gas, and significantly reduced volume of solids.  the digester or the drying beds.  in the tank long enough to ensure that it is safe to release to the river. the bottom of the Perquimans river near the middle of the channel.  Background and! System Overview  8    Hertford, NC  Hertford Sewer And Water Asset Management  8. The digester, apart from the water treatment process, allows the biological degradation of the sludge removed in the clarifier to continue for an extended period of time by mixing and constant injection of oxygen. This results in the further reduction of solids/overal. volume of The WWTP condition is poor and is the focus of the Town's attention in terms of ensuring compliance with NCDEQ compliance and providing Sewer services to the residents.  waste.  2.2.2 Water System  The water distribution system conveys water from the municipal wells to approximately 1,000 customers, operating under Public Water System ID No. NC0472010. The water system assets  include approximately:  31 miles of water mains 287 valves 144 fire hydrants 1,000 water meters 2storage tanks 3groundwater wells  The sewer collection and water distribution system inventories are currently stored in a PDF format compiled in 2023 and partially represented in an engineering report generated by WithersRavane! under a NCDEQ DWI Project number VUR-D-ARP-0051. Those files are currently in the conversion process to a GIS system. Field location and arrangement validation, inventory validation, and assessment is in progress. Delivery of the Town's GIS is anticipated in the first  quarter of 2024.  Background and System Overview  9    Hertford, NC  Hertford Sewer And Water Asset Management  3 Level of Service  Level of Service (LOS) criteria define the goals and standards the Town will strive to attain. LOS criteria reflect the mission of the Town and are expressed in terms of quality, quantity, reliability, responsiveness, cost, and environmental impact. Taking all these considerations into account, the  Town is adopting the following LOS criteria/goals:  Table 1. Hertford, NC level of service criteria  Category  Levei of Service  Performance Measure  Target /Goal Oviolations/year Oevents/year Oviolations/year <8h hours $15/100 miles Every! 5) years 5% every) year 1-2 hours 1-2 hours 1-5 days <2/month <3/month <5/month <5/month 25days 29-32 days per cycle Weekly Once/year  1.V Water Quality Water Rule (GWR)  Compliance with Safe Drinking Water Act (SDWA) primary and secondary standards and Ground 2. Residential Back-ups and SSOs No adverse events will cause residential: sewer back-ups ands sanitary sewer overflows (SSOs) 3. Firei Protection and Water Pressure Compliance with North Carolina Administrative standards 4. Water Availability No adverse event will causet the customer tob be without water 5.5 Sewer/Water System Performance  Number of violations per year Number of violations per year  Code (NCAC) andl Insurance: Services Office( (ISO) Number of violations per year  Time without water Main breakf frequency per year Fulll leak detection survey water CCTV inspection sewer Emergency (breaks) Leaks Meter Repair Water outage Colored water Water with badt taste, odor Pressure water bill and on website Number of days Number ofdaysf forb billingcyde  6. Response Time Respond to customer complaints/requessina timely manner 7.Complaints Number of complaints due to unplanned or unanticipated events 8.E Education and Outreach 9.C Communication Notification of planned shutdown will be provided 10. Customer Readings Consistent/ Recurring monthly readings 11. Well Head Protection Maintain areas directly adjacent to the source wells to ensure integrity of source 12. Financial Capability as needed to ensure full cost recovery  Water conservation information included with Yearly  Landscaping, appearance, security fixtures  Rates arer reviewed ona ana annual basis and revised Revise, review rates  Level of Service  10    Hertford, NC  Hertford Sewer And Water Asset Management  With the LOS criteria developed, the Town has established sustainable business processes to ensure information required for measuring LOS is cost effectively available. The processes for collecting the information is part oft the existing workflows. For example, the number of water main breaks per year is centrally located in the work order log, used by the Public Works Department.  3.1 Sewer System  The prevention of residential sewer back-ups and sanitary sewer overflows were designated as important metrics for the sewer system analysis, and Table 2 summarizes the sewer system design standards per The North Carolina Administrative Code known as NCAC. More specially subsection 02T relates to the standards for sewer systems and mechanisms. These standards were used to identify assets within the collection system that require updates to become compliant.  Table 2. Sawer system design standards per NCAC  Design Standard/Guideline 15A NCAC 02T.0114  System Parameter Design Capacity  Evaluation Criterion Daily Flow Storm Sewer Water Mains - Vertical Water Mains - Horizontal Reclaimed Water Lines Vertical 18 inches Reclaimed Water Lines- Horizontal Drinking Water Source Classified Waters2 or Wetlands3 Stream, Lake, Impoundment, Wetlands*, Waters' Building Foundation Basement Top slopes Drainage System Swimming Pool Final Earth Grade Public Gravity Private Gravity 6-inch 8-inch 10-inch 12-inch 14-inch  Value Variousl 18 inches 18 inches 101 feet 2 feet 1001 feet 50 feet 10 feet 51 feet 10 feet 101 feet 5 feet 101 feet 36 inches 8-inch 6-inch 0.6 0.4 0.28 0.22 0.17  Minimum Separation  15A NCAC 02T.0305  Minimum Nominal Diameter  15A NCAC 02T.0305  Minimum Slope, in feet/100 feet, by Diameter of Gravity Level of Service  15A NCAC 02T.0305  11    Hertford, NC  Hertford Sewer And Water Asset Management  Pipe?  16-inch 18-inch 21-inch 24-inch 27-inch 30-inch 36-inch Maximum Distance Minimum Diameter Minimum Bench Slope Minimum Nominal Diameter Air Release Valves for Vertical Distance  0.15 0.14 0.1 0.08 0.07 0.06 0.05 425 feet 4f feet 4% 4-inch >1 101 feet  Minimum Slope, in feet/100 feet, by Diameter of Gravity Pipe? Manholes Force Mains  15A NCAC 02T.0305 15A NCAC 02T.0305  1.F Refer to NCAC Standard for detailed list of values.  2. Classified' WS-II, WS-III, WS-IV, B, SA, ORW, HQW, SB from normal high water or tide elevation. 3. Classified as UWL or SWL or directly abutting the waters classified above. 5. Classified as C, SC, or WS-V, or ground water lowering and surface drainage ditches 7. Based upon a mean velocity of 2.01 feet per second and Manning's "n" of 0.0013.  4. Classified as WL.  6.E Embankment or cuts of 21 feet or more vertical height.  Level of Service  12    Hertford, NC  Hertford Sewer And Water Asset Management  3.2 Water System  Fire Protection and Water Pressure are designated as important metrics for the water system analysis, and Table 3 summarizes the water system design standards per NCAC and ISO. These standards will be used to identify assets within the distribution system that require updates to  become compliant.  Table 3. Water system design standards per NCACand 150  Design Standard/Guideline NCAC T15A:18C.0907(a) NCAC T15A:18C.0405D) NCAC T15A:18C.0805 ISO Guide for Needed Fire Flow (2014) NCAC T15A:18C.0901  System Parameter Valves System Pressure Water Storage Minimum Residential Fire Flow, by Distance Between Buildings Minimum Nominal Diameter  Evaluation Criterion Number at Crosses Number at Tees Number on Hydrant Branch Minimum, during PHD Minimum, during MDD + Fire Flow Minimum Combined Elevated and Ground Storage Capacity Fire Flow' Volume >3 30ft 21-30ft 11-20ft <10ft Hydrant Branches Non-Fire Protection Mains!  Value 3 2 1 30 psi 20 psi 1/2ADD Min 75,000 gal 500 gpm 750 gpm 1,000 gpm 1,500 gpm 6-inch 2-inch  1. Contingent on residence restrictions per NCAC T15A:18C.0002  Level of Service  13    Hertford, NC  Hertford Sewer And Water Asset Management  Sewer System Inventory  4.1 Gravity Mains  The Town's sewer collection system consists of approximately twenty four (24) miles of gravity mains, serving approximately 1,000 sewer customers which includes residential, commercial, industrial, and institutional classifications. Gravity main diameters range from 4 to 15 inches and materials include ductile iron (DI), high density polyethylene (HDPE), polyvinyl chloride (PVC), Asbestos Cement (AC), Reinforced Plastic Mortar, and Vitrified Clay (VCP). Table 4 provides a summary of the diameter and materials of the gravity main pipes in the system. Some portionsofthe gravity collection system werer rehabilitated usings slipi formingt technologiest butexact details havel been lost Research todefinet thosel locationsis isinp progress evenasp plannedrepair workt top parts oft thec colectonssystem.cntnuesintre  design phase.  Tabie + Sravity mains by diameter and maternal summarizad by lengtin  fzati  Diameter Material 4 5 8 10" 12" 15" Unknown Total Percent of Total  DI Other PVC TC/VCP RPM Total Percent  ofTotal 910 .9% 9,542 9.7% 80,649 82.3% 4,565 4.7% 749 226 1310  82 28 40  349 479 3,536 6,006 1,052 3,485 709  2,938 3,303 35,909 37,618 881  .8% .2% 1.3%  226  1,310  3,088 3,529 41,555 48,898 881 97951 3.2% 3.6% 42.4% 49.9% .9%  Sewer System Inventory  14    Hertford, NC  Hertford Sewer And Water Asset Management  Gravity Sewer Size pipe (lengths /% of total)  881,1% 3088,5%  3529,6% 4155,7%  48898,81%  Ductile ron : other PVC Clay : RPM  lustration I Crarity S2wer Pipe Size 35 a 3 of System Totai  Previous Rehabilitation Projects  The Town has implemented in the last two decades, at least three (3) projects aimed at correcting critical deficiencies in the Sewer collection system. Historical data is limited but based upon current operations, Public Works staff memory, and continuing inspections to the The sewer main rehabilitation project of 1995 was implemented to correct failing lines on Perry street and Dobbs street along with manholes on Hiland Park, Dobbs, and King streets. These repairs amounted to approximately 500 feet of 8 inch line and 400 feet of 10 inch line repaired insitu. Manholes on Kings street between Hyde Park and Edenton Road, and on Hiland Park at In 2004 an extensive but poorly documented project was executed to clean lines and manholes in most of the streets not covered by the 1995 project and later the 2009 project. In 2009 the rehabilitation project containing 8495 feet of 6& 8 inch lines were Video assessed and then cleaned. Another 3200 feet of 10 inch lines were Video assessed and then cleaned. Not captured in this documentation is the slip lining of a number of streets within the town. Work on Sunset Drive provides an example of recurring customer impacts related to the sewer blackages in a sewer that has been gravity lined. Sunset Drive was slip lined in 2009, however itis one of the most problematic lines in the town. Inspections, including assessments by NC Rural Water have indicated that the 8" line has been impacted by settling of the were line bedding material, which is evident in the roadway above. In addition, preliminary information from the sewer survey work indicates that the slope of the line does not meet the .4ft/100ft  system, the following is understood concerning previous rehabs.  the corner of Winslow were repaired but to what extent is unknown.  Additionally, more than 20 manholes were cleaned.  Sewer System Inventory  15    Hertford, NC  Hertford Sewer And' Water Asset Management  slope required for an 8" line by NCAC detailed in Table 2 above. Iti is likely that sand is entering the line were service connections from the homes connect to the newer slip lining. The combined event of these issues, is a sewer line that registers many customer complaints and requires frequent cleaning and maintenance. Similar conditions are evident in other locations. The Town's current understanding of the multiple issues is informing current sewer  line rehabilitation projects. 4.2 Force Mains  The Town's collection system consists of approximately 5.4 miles of force mains. Force main diameters range from 2 to 12 inches and materials include ductile iron (DI), high density polyethylene (HDPE), and polyvinyl chloride (PVC) as well as some Vitrified clay and Abestos cement. Table 6 provides a summary of the diameter and materials of the force main pipes in the  system.  Table 5. Force mains by diameter and materiai (summarized by length in f2eti  Diameter/ Material 2 4 6 8 10 12 Unknown Total ofTotal  %of Total 252 0.9% 6285 22.1% 8074 28.3% 656 2.3% 2132 7.5% 7274 25.5% 3830 3830 13.4% 4309 28503 15.1%  DI AC 252 335 4130 2096 523 2132 7274 0 14646 51.4% 7.4%  HDPE  PVC 1014 4911 1408 94  VC Unknown Total  25  440 39  2096  1014 6413 3.6% 22.5%  25 0.1%  100.0%  lustration 2 Pice 51245 a 3ofSvst2m Tota:  Sewer Forcemain sizes (lengths/as a % of total)  unknown, 3830, 2,252,1% 13%  4,6285,22%  12.7274,2674  6,8074.284  10.2132.8%  3,556,2%  19 Z unsnown  Sewer System Inventory  16    Hertford, NC  Hertford Sewer. And Water Asset Management  lllustration 3 Forcemain materials as a % of System Total  Sewer Forcemain Pipe Materials  Unknown 14% Clay 0%  PVC 23%  Ductile Iron 52%  HDPE 4%  Asbestos cement 7%  Ductile Iron Asbestos cement HDPE PVC Clay Unknown  4.3 Manholes  The sewer collection system contains 359 manholes, ranging in approximate depth from 2t to greater than 15 feet. The town manholes are identified by the type of lining materials including block, brick, cementitious (non-reinforced concrete), concrete, precast concrete, and fiberglass. Due to the age of the system it is believed to also contain several manholes that have been covered by either soil or pavement. Some manholes, abandoned in place or sealed off likely exist but are not part of this inventory. Some manhole repairs or reconstruction have occurred but are not well documented. Table 7 provides a summary oft the depth and material oft the manholes in the Town of Hertford system. Additionally, a rating of the condition of each manhole is included based upon  recent field observations.  Sewer System Inventory  17    Hertford, NC  Hertford Sewer And' Water Asset Management  Table 6. Manholes by depth, material, rating  Type/ Lined? Condition Brick Un-Lined Good Un-Lined Fair Un-Lined Poor Un-Lined Unknown Lined Good Lined Fair Lined Poor Unknown Concrete Non reinforced Un-Lined Good Un-Lined Fair Un-Lined Poor Concrete reinforced Un-Lined Good Un-Lined Fair Un-Lined Poor Un-Lined Unknown Pre-cast Un-Lined Good Un-Lined Fair Un-Lined Poor Un-Lined Unknown Lined Good Lined Fair Lined Poor Lined Unknown PVC Un-Lined Good Un-Lined Fair Un-Lined Unknown Unknown Fair Unknown Unknown  Depth of Manhole  Total/ 359 169 16 74 54 12 2 4 5 2 7 4 2 6 2 2 1 108 30 17 17 2 1 2 2 1 67 2 1 64  <6 9 41 32 8 2 2 1 2  6'-8' 8'-10' 10'-15' >15' Unknown Subtotals  5 14 13 2 2 2  2 4 3  11 3  3 3 1  1 1.  1  2  1  1 21 13 6 1 1 1  o 3 1 1  12 3 5  3 2 2  4  1  Material of Construction Unknown Survey in Progress  2 2  1  1  1  60  Sewer System Inventory  18    Hertford, NC  Hertford Sewer And Water Asset Management  4.4 Lift Stations  The collection system contains nineteen( (19) lift stations. They are the backbone of the functioning wastewater collection system for the Town of Hertford. Of these 19 pump stations, one (1)isa a complex station containing two pumps in addition to a manual bar screen that is serviced daily. That station, Cemetery receives a disproportionately large segment of the overall flow sent to the Hertford Wastewater Treatment Plant, including flows from 4 major system pump stations. Additionally, Cemetery Pump Station is used for the disposal point for any approved waste Eight (8) other stations are also duplex stations containing two pumps. These are the larger stations that handle significantly more flow than the ten (10) simplex stations that make up the remainder of the pumping system. Pump design capacities range from 50 GPM up to 800GPM at the largest station (Cemetery), and Tables 8/9 give a summary of Duplex and Simplex Pump stations respectively. There are a number of private lift stations that transfer sewage tot the gravity  disposal by' Vacuum truck or other hauler.  system.  Tablz 7. Duplexlift station information  Force Force Main Main 800 1821 75 1045 150 2038 175 150 250  Pump Station F Name 1 Cemetery 2 S-Bridge 3 ARPDC 4 Whedbee 5Feed & Seed 6 Willow 7 Wynne Fork 8 Meads  Capacity Length dameter Manuracturer Model  8 Gorman-Rupp Unknown Fairbanks 4 Morse  Unknown  350/500 Unknown Unknown Gorman-Rupp Unknown  4 Gorman-Rupp Unknown Fairbanks Fairbanks 4 Morse 4 Homa  512 Unknown Morse  Unknown M25T136A AMX434- 184 Unknown  296 1040  200 Unknown Unknown Crown?  9 Commerce Park 200/350 Unknown Unknown Gorman-Rupp Unknown  Sewer Asset Condition Assessment  19    Hertford, NC  Hertford Sewer And Water Asset Management  Tabie 8, Simplex Lifr station information  Pump Force size Main (Hp) Length  Force Main  Pump Station # Name 10 Wynne Fork N 11 Wynne Forks 12 Clarks House 13 Ainsley House 14 Gaston Drive 15 Gaithers Street 16 Grubb St. East Grubb St./ 17 Charles 18 Punch Alley 19 Clark Street  diameter Manufacturer Model  2 Unknown Unknown Liberty 0.5 Unknown Unknown Liberty 2 Unknown Unknown Liberty 0.5 Unknown Unknown Liberty 2 Unknown Unknown Liberty 2 Unknown Unknown Liberty 2 Unknown Unknown Liberty 0.5 Unknown Unknown Liberty 2 Unknown Unknown Liberty 2 Unknown Unknown Liberty  Unknown Unknown Unknown Unknown Unknown Unknown Unknown Unknown Unknown Unknown  Several of the stations noted are either at the end of a reasonable life cycle or are well past that time. Specifically, the Meads pump station has experienced numerous failures and is included in upcoming replacement work currently in the design phase with construction targeted for 2024. Meads has been on a continuous by-pass for the greater part oft two years. Expenses continue to grow in maintaining the flows as by-pass pumps utilized well past their expected life have failed from long-term use and have been replaced with new pumps or rental units until new by-pass The Cemetery pump station, the workhorse of the system also experienced extensive failures in August of 2023. That station is on by-pass with likely replacement of the pumps necessary along Two other stations, Feed & Seed, and Willow have both had replacement of one of their pumps within 2023. Challenges with this equipment and the existing SCADA communications system  pumps are received.  with repairs and upgrades to the control system.  lead to numerous after hour responses to ensure continuity of the operations.  Sewer Asset Condition Assessment  20    Hertford, NC  Hertford Sewer And Water Asset Management  5 Sewer Asset Condition Assessment  For the purposes of Asset Management, condition assessment focuses on the likelihood of failure foragiven asset. Industry standards recognize three (3) major categories in which an asset cani fail:  Physical Failure beyond repair Performance Failure Economic Failure  Asset breaks, cracks, excessive settlement, reversed grades, etc. inr many cases this means - Capacity, pressure, and failure to meet regulatory requirements (uncontrolled releases) Asset is no longer the most cost-effective solution ori is no longer required due to changes inconditions or customer needs (undersized for population or use served).  Future versions of this AMP will more fully detail the condition assessment of sewer and water  assets as a combination of physical and performance failures.  5.1 Current State  WWTP  The WWTP, while originally designed for 1 Million Gallons per Day (MGD) of flow, it was only permitted to operate at 75% of that capacity or 750 thousand (k) Gallons per Day (KGD). Depending upon the season, the plant receives between 110 KGD to 650 KGD for the combined The headworks processes in the WWTP have been non-operational for more than 2 years. An electrical strike in 2021 impacted the Effluent pump station, and the disc filter drive motors as well as most of the controls and electronic drive mechanisms. These equipment failures have created 1. Blockage of the incoming sewage at the influent screens resulting in overflows of waste onto the ground and to drainage areas. The Town of Hertford has received an NOV and fine for one 2. Accumulation of rags and stringy waste in the digester which inhibits the process and makes 3. Accumulation of heavy solids in the bottom of the 02 ditches which reduces the overall volume of the chamber and reduces the available process volume for the biological process. This makes the system subject to easy upset and reduces effective treatment capacity which could result in  flows from the Town of Hertford and the Town of Winfall.  operational, process and permit compliance issues, including:  particular release in 2022.  pumping of sludge for ultimate disposal difficult to impossible.  release of partially treated sewage solids.  4. Wear on pumps, valves, and other processes exposed to abrasive grit. ability to control, isolate, and clean segments of the system.  5. Clogging of pumps  6. Blockages in valves (including slide gates, sluice gates, telescoping valves) which in turn limit the 7. Instrumentation and control system failures that make routine monitoring and trending of equipment (e.g.: drive motors, pump, instrumentation) impossible. Impacts to remote  Sewer Asset Condition Assessment  21    Hertford, NC  Hertford Sewer And Water Asset Management  monitoring and alarming are issues as well.  Collection System  For the purposes of this plan, the current state of all sewer assets was estimated/determined by a preliminary assessment conducted by a consultant with inputs from historical data available, data collection from work orders issued for repairs, clogs, leaks, breaks, and other system deficiencies. See tables 10 and 11 below for perspective categories for gravity sewers and force mains respectively. In addition, as part of the grant work in progress in 2023/2024 for the Town of Hertford Sewer collection and treatment system and the water treatment and distribution system, the Consultant is compiling an Asset Inventory Assessment (AIA) and documenting those findings. As described in the known metrics of each asset: age, material, diameter, capacity, etc. each of the gravity mains, force mains, manholes, and lift stations inventoried were prioritized for ehalbitaton/epacement Based on previous rehab activity success or failure, material and diameter, gravity main and force mains were selected for rehabilitation in the current Grant funding slated for 2024. Based on the condition inspections performed by town, the consultant established Subsequent assessment, which is a continuous process, has further identified / clarified sewer lines within the town which will be considered or included in the reprioritization of lines to be rehabilitated within the current grant work to be conducted in 2024. Those additional lines are  Advanced portions of that information is included in this planning assessment.  an inventory of proposed repair segments as shown on Illustration 2.  tabulated in Appendix 1  3629 5,1a30Cr Fa20215 Conagor 03a  37, B 27302.3.277  Condition Falled Poor Fair Good Excellent  Criteria  Assets that have failed and are no longer contributing to the system Material: RCP, TC, pipe slope <70% Standard Material: RCP,TC pipe slope < 100% standard, >70% standard Material: DI, HDPE, PVC pipe slope meets standard, flow < 75% design capacity Material: DI, HDPE, PVC pipe slope/grade meets standard, flow < 50% design  capacity  Tacie Suacons Factors 4392720304294 m3A 955255242  Condition Failed Poor Fair Good Excellent  Criteria  Assets that have failed and are no longer contributing to the system Material: Unknown: frequent break/leaks/plockages Material: Unknown: Leaks reportedlOccasional blockages Material: DI, HDPE, PVC and Diameter: 8-inch or greater Material: DI, HDPE, PVC and Diameter: 3, 4, and 6-inch  Using these categories in conjunction with information from work order history, frequency of required repairs, and the consultant's observations and assessments during the 2024  Sewer Asset Condition Assessment  22    Hertford, NC  Hertford Sewer And' Water Asset Management  rehabilitation work, each gravity main asset was assessed. This information will be used to prioritize segments of the force mains, gravity sewers, and other components for repair as part  oft the projects forecasted in the CIP.  5.2 Forecasted State  The forecasted state of the sewer asset condition assessment is to collect and organize field assessments of 95% of collection system assets by the end of calendar year 2024. The information to be collected is expected to include preliminary assessments of manhole construction, condition and inverts of main sewer lines and sewer line material of construction and slopes. Assessing the condition of sewer lines will require CCTV and is would be accomplished over a 10 year time frame. Detailed assessments of Manholes would be completed in conjunction with the sewer CCTV projects. In the summer/fall of 2023, assessment of the town's sewer system began with initial assessments conducted with the aid of the North Carolina Rural Water Association (NCRWA) field team. Further and more extensive data collection is implemented via  NCDEQ awarded grant monies by the Town A/E contractor WhithersRavane..  This continuing effort will prioritize rehabilitation efforts in the immediate 2024 work and prime  the system with continued follow-on projects included in the CIP.  5.2.1 Closed-Circuit Television (CCTV) inspection/Smoke Testing  Initial NCRWA CCTV inspections and smoke testing on several collection system locations were conducted in June/July of 2023. This work has provided condition information used to prioritize rehabilitation and replacement needs. That information has helped to both dentuiying/contiming manhole locations as well as identify significant line performance issues. Those locations and criticality has been provided to WhithersRavanel in its NCDEQ Grant funded work to rehabilitate many portions of the Town collection system. That work is anticipated to fully rehabilitate the more critical lines in 2024. Additional future work is anticipated as these further assessments are Recurring /Regular CCTVi inspections to gather updated condition information could help the Town prevent residential back-ups and sanitary sewer overflows (SSOs) by rehabilitating or replacing  accomplished.  assets before they fail.  5.2.2 Manhole Inspection  Sewer Asset Condition Assessment  23    Hertford, NC  Hertford Sewer And Water Asset Management  Manhole inspections are typically performed along with CCTV inspection initiatives as done with the 2023 NCRWA work. Additionally, with the recurring issues of collection system clogging, the Public Works staff has routinely assessed the manholes related to these now designated critical repair locations. Separately, during rain events, Public Works staff is visiting pump stations and related feeder manholes to assess the infiltration/inflow indicators for the lines and manholes. This recurring visits supplemented by regular manhole inspections will help the Town identify corrosion, inflow and infiltration, fat and grease build up, and other issues that could cause  residential back-ups, SSOs or clogs in the collection system.  5.2.3 Lift Station Assessment  For the purposes of this project, lift station information was gathered by the Town Public Works staff as they conducted their daily and monthly inspections. Significantly more thorough Pump drawdown testing would provide the existing capacity for each pump to compare to the design capacity, allowing the Town to determine the remaining efficiency oft the pump. Complete pump station assessment would also provide condition information for the pumps and pump accessories within the pump stations, and help the Town identify maintenance, rehabilitation, and replacement needs. The Town does not currently have a formal pump station assessment program, however recurring inspection notes are compiled and used in determining prioritization for upcoming work possible as budget/funding allows. Once completed, the GIS database of the Asset Inventory will be used to track inspection findings and documenting those findings with the system. These findings will then be used to prioritize future repair and maintenance activities as captured in the Capital Improvements Plan (CIP).  inspections are needed.  Sewer Asset Condition Assessment  24    Hertford, NC  Hertford Sewer And Water Asset Management  6 Sewer Criticality and Risk Analysis  Criticality refers to the level of importance placed on each asset in terms of maintaining the performance and integrity of the entire system, and risk refers tot the consequence of failure placed This plan explains the current state of criticality and risk and prepares a forecasted state to provide ongoing condition and risk analysis that contributes to a better understanding of system criticality  on each asset.  and risk.  6.1 Current State  For the purposes of this project and developing a program forward, the current state of the 1. Not already proposed for repair during the 2024 grant work currently in design. 2. Not in compliance with the NCAC: sewer system design standards, that ist the slopes for normal 3. Have repeated issues with clogging as documented by the Public Work order system. 4. Have indicators of line failures such as excessive sand/dirt build up, settling of  criticality and risk analysis focused on the assets that are:  gravity flow of wastewater is inadequate.  pipes/pavement.  5. CCTV indicates wall failure or structural integrity issues. 6. Other indicators of line failure, infiltration, inflow, or clogging.  6.2 Forecasted State  6.2.1 Regulatory Considerations  NCDEQ adopted the Minimum Design Criteria for the permitting of Gravity Sewers in February 1996 and updated the design criteria tot the 15A NCAC2T Regulations in March 2008. The purpose oft the standards described ini these regulations is to protect the health and safety of the community and environment. Table 2 contains a summary of these NCAC sewer system design standards. Using these standards, the collection system assets could be evaluated to determine the assets that are not in compliance with these NCAC design standards. As the collection system assets are upgraded, rehabilitated, or replaced, the new assets are required to be in compliance with these  standards.  Sewer Criticality and Risk Analysis  25    Hertford, NC 7  Hertford Sewer And Water Asset Management  Collection System Operation and  Maintenance Action Plan (MAP)  Operation and Maintenance (0&M) for the wastewater system focuses on upkeep of the gravity mains, force mains, manholes, and lift stations. Maintenance consists of "Emergency Maintenance,' which is corrective action needed quickly to keep the system operational, and "Preventative Maintenance, , which is routine, and scheduled repair tasks to address developing failures before they arise. Other nominal repairs are also included in the mix when maintaining the Collection system in terms of longevity of the system components. System Operators and Mechanics in the performance of their daily routines include the identification of necessary repairs or other fixes. These findings are amplified with the more indepth monthly assessments oft the duplex stations. These recurring findings are assembled via a' "running" spreadsheet in al Maintenance Action Plan (MAP). The WWTP Operators score the various items with a priority. Based upon that scoring and assessing The items below represent routine maintenance items performed throughout the collection system. The Town of Hertford Sewer Pump Station Operations program includes daily physical checks and inspections of all 19 stations as previously noted. Those inspection data sheets are  available budget an action plan is created toi facilitate maintain the system.  maintained records.  7.1 Lift Station Maintenance  The routine Lift Station Operation and Maintenance Program includes the following items: Inspecting, cleaning, and removing debris from the pump station structure, outside perimeter, and wet well. For Cemetery Pump Station cleaning the bar screen daily. Inspecting and exercising all valves and assessing possible need for further repairs. Inspecting and lubricating pumps and other mechanical equipment. Verifying the proper operation of the alarms, telemetry system, and auxiliary equipment. Other testing procedures as recommended by the manufacturer. Annual flow meter calibration (at a minimum). NOTE: Pump stations not connected to telemetry systems must be inspected at least daily. The Pump Station daily inspection form is used for all simplex and duplex pump station inspections. In addition to the daily inspection, a monthly in-depth assessment of the duplex Recording total accumulated pump running hours (for both pumps in the duplex stations). Inspecting the wet well for signs of build up, damage, debris, and float/alarm system Checking the high level alarm function (lights, audio, SCADA signal indicator). Look for indications of vandalism or other damage. (report immediately)  Pump stations with telemetry must be inspected at least once per week.  stations. The daily inspection form covers the following items: Performing/verfying an operational test of the pumps.  integrity.  Inspect control panel switches for proper positioning. Record any discrepancies found or repairs needed.  26    Hertford, NC  Hertford Sewer And Water Asset Management  The Pump Station monthly inspection more formally documents details of the duplex stations for possible early actions or additional maintenance. The monthly report covers: Greasing valves and cycling valves to ensure free operation and functionality  Recording hour meter readings Check by-pass operation (as applicable) Confirm emergency power is available  Inspect the Pump station security (fence locks, building locks, wet well/dry well secured.  Untangle twisted cables that may affect the automatic cycle operation. Sweep and clean station interior and/or grounds as applicable  Inspect lighting of station  Check for unusual pump noise or vibration. Check amp readings. Note discrepancies. Confirm pumps appear to be seated properly. corrosion for possible maintenance action.  Confirm that no leakage is observed. This includes both wastewater as well as lubricant oils. Confirm guide rails and brackets are aligned and fastened and are corrosion free or track rate of Confirm that piping and valves are not leaking and that bolts and nuts aret tight. Record findings and assessment on Monthly Utility maintenance form.  7.2 Collection System Maintenance  Clean and video inspect at least 10% of the collection system each year. At the time of cleaning, record the date, location of cleaning, type of cleaning, and other general observations during Document all Sanitary Sewer Overflow (SSOs) using the State form or other similar form. All spills, reportable or not, must be documented. Spills that are reported to the State should be Incorporate information from new construction and rehabilitation projects, including line diameter, material, and scoring for other KPIs, into the collection system GIS within 3 months All high priority lines (including aerials, sub-waterway crossings, lines contacting surface waters, lines positioned parallel to stream banks and subject to eroding in such a manner that may threaten the line, and any other segment oft the: system that is designated as high priority) must be inspected every six (6) months. A log must document the area inspected, the date,  cleaning (type of debris, quantities, etc.).  on the required form. ofc construction completion.  method of inspection, and any corrective actions performed or initiated.  27    Hertford, NC  Hertford Sewer And Water Asset Management  8 Water System Inventory  8.1 Distribution Mains  The Town distribution system consists of approximately twenty nine (29) miles of water mains to convey water from the municipal wells to the 1,000 water customers. Pipe diameters range from 2 to 14 inches, and pipe materials include asbestos cement (AC), cast iron (CI), galvanized iron (GALV), and polyvinyl chloride (PVC). Table 13 provides a summary of the diameter and materials  of the water main pipes contained in the distribution system.  se M32/5/5t2m Su damerer and manarsurman2a G1 2ng2 2er  Diameter Material 2 4 6" 8" 12" 14 Unknown Total Percent pfTotal  Percent ofTotal  AC  CI GALV PVC Unknown Raw  Raw Total PVC  water Water CI  22283 20959 10981 396 532  705 43947 26.99 15057 9.24 77523 47.61 16086 9.88 532 9315 367 705 162827 .43  4076 11524  13031 26812 1006 36674  4166  .33 5.72 0.2  9315  367 367 .23  22346 42412 23289 69542 13.72 26.05 14.30 42.71  4166 2.56  Over 99% of the system has known material and diameter. The most common material in the system is Polyvinyl chloride (PVC), with 43%, followed by cast iron (CI), with 26%. The most common diameter across the system is 6 inches, representing just under 47%, followed by 2 inches, representing 27%. Next is 4inch and 8 inch with 9.24% and 9.88% respectively. The unknown Polyvinyl chloride (PVC) representing 43% of the system materials commonly used in newer water construction projects and will likely continue to be used. Asbestos cement (AC), cast iron (CI), and galvanized iron (GALV) represents 42% of the system and are typically the oldest and potentially most compromised pipe materials as documented with the most prevalent lines requiring repairs/patches and replacement. The earliest underground systems were documented to be as oid as 2200 BC and were made of terracotta (clay). Wooden pipes were used in ancient Rome and Europe until around 1700. Lead pipes were used beginning in the 1800s and ceased in the 1920s when civilization became aware of lead poisoning. More recently, Asbestos cement and cast iron were first used in the 1930s, reaching peak popularity in the 1950s and were discontinued int the 1980s. Galvanized iron was a popular construction material prior to the 1960s.  diameters is limited to .2% of transmission lines.  Water System Inventory  28    Hertford, NC 8.2 Valves  Hertford Sewer And Water Asset Management  The distribution system in Hertford consists of an approximately 287 transmission line water valves which control the conveyance of water throughout the Town, ranging in diameter from 4to 14 inches. Table 14 provides a summary of the valve diameters contained in the distribution  system.  Table 12. Valves by diameter Diameter Count <4" 4" 6" 8" 12" 14" Unknown Total  36 28 167 40 4 9 3 287  8.3 Fire Hydrants  The distribution system contains approximately 144 fire hydrants to provide fire flow and flushing throughout the Town. The date of the first Fire hydrant installation is unknown and the most recent installation was in 2023. The Town, like many locations has an assortment of hydrants by different Manufacturers. Due to age, misuse, and damage 7 hydrants are currently out of service. The Town hydrant replacement program has begun in 2023 with 1 hydrant replacement complete Most of the existing hydrants, due to age are fitted with 4 V2 inch main line fittings for providing fire flows to Fire Pumper Trucks. This main hydrant discharge is typical along with two (2) 2V2 inch hose lines on virtually all municipal hydrants. The town fire trucks are now fitted with 5 14 inch pumper truck intake lines. When connecting to most Town hydrants, an adapter, known as a"Stork"fitting adapts the hydrant discharge to take a 5 14 inch intake line from a Fire truck. As the Town replaces existing hydrants, the 4 V2 inch discharge is replaced with the 5 V4 inch main The future years of the Town hydrant replacement program, after the replacement of broke or non-serviceable hydrants is complete, will focus on the replacement or resetting of an additional 15 hydrants that no longer sit completely at ground level. Many hydrants have settled to the point where the original base of the "plug" is below the ground level. This results in numerous instances of hydrant intakes being below the recommended 18 inches above ground. In some extreme cases, the hydrant is exceptionally low and makes the location harder to identify in case of a fire emergency. This depressed position, if left uncorrected is likely to lead to corrosion via "weep" hole plugging. In establishing this hydrant program, and facilitate future in-house repairs of hydrants, the town is establishing a list of 3 preferred hydrant manufacturers. Establishing  and 2 additional hydrants in the process of being replaced.  line discharge, that is the new the standard size for the town.  Water System Inventory  29    Hertford, NC  Hertford Sewer And Water Asset Management  this standard is believed to help in ensuring applicable focused training along with maintaining The town's hydrant flushing program sets a goal of fully flushing all hydrants at least once per year with some additional flushing done as necessary after repairs, as part of community programs or other events. A comprenensive log of the flushing along with a published schedule  some standardized parts inventory for repairs.  for each year is a recurring requirement of the town program.  Table! 13 FrH,ranss by Manufacturer  Hydrant Manufacturer Muelier Waterous Mathews Clow American Darling total  #I Installed 24 30 25 5 31 144  Water System Inventory  30    Hertford, NC 8.4  Hertford Sewer And' Water Asset Management  Storage Tanks  The distribution system contains two (2) finished water storage tanks, tank one is located on the grounds of the Water treatment facility. The second tank is located within the fenceline of the town wastewater treatment plant. Storage tanks  information is located in table16.  Table 74 Surmarvofsborage cank formation  Tank # 1 2  Year Capacity Type Built (MG) 1970 EST 0.5  Elevation (Rt) Base Inlet/ Outiet Overflow 99* 99.0  Tank Name Meads Circle  83* 83.5  109* 109.0  West Grubb st. 2009 EST 0.25  *Note: Meads Circle Tank data collection in progress with current Water treatment  system improvements project slated for 75t quarter 2024.  8.5  Groundwater Wells  The distribution system contains three (3) groundwater wells that provide water to the  system. Information about the wells is located in Table 17.  Tasa15 Simmay 23A3202 'o  Well Year Depth # Drilled  Pumping Intake Depth Screening () Various Various Various  Pumping 24-hour rate (gpm) 270 50 180  Location  (ft)  water level @ maxyield 28.72 51 38.18  1 2 3  1958 1962 2008  127 117 115  Ballahack rd Ballahack rd S. Edenton rd. street  Well #1is a Grundfos submersible 15 hp pump. Well #2 is a Grundfos submersible 5 hp pump. Lastly, Well #3 is also a Grundfos submersible 7.5 hp pump. Recurring issues with maintaining flows for well #3 have lead to plans to rehabilitate well #3 to facilitate utlizing it on a recurring basis. Currently, overall system flows are limited by the production of well#3 limiting the Water Treatment Plant capacity.  Water System Inventory  31    Hertford, NC  Hertford Sewer And Water Asset Management  8.6  Customer Meters  The distribution system contains approximately 1,000 residential and 128 commercial and industrial meters. The monthly manual meter reading process requires approximately 20 man-days of labor for initial readings. Re-reading (verifications) require an additional V2 man-day. Lastly, the turn-on/turn-off sequencing for non- payment and service starts/stops then amounts to another 1 man-day to execute. This extensive data collection and operation process does not include the complexities of manual billing inputs, corrections, and research in resolving bills that is inherent in a The Town has begun the planning to replace the entire inventory of manually read water meters with fully remote sensing, reading, tracking, and operating meters. The Capital Improvements Plan as drafted, includes 4 stages of implementation over the same number of years. Research into a likely automated meter manufacturer has begun. Neighboring municipalities ongoing conversions are being monitored for lessons learned, cost comparisons, technical issues, supply availability, ease ofi mplementation, and other factors. With an eye on making a optimal selection with a strong cost to benefit ratio, the town would like to move out within the next fiscal year.  manual meter reading system.  Water System Inventory  32    Hertford, NC  Hertford Sewer And Water Asset Management  9 Water Asset Condition Assessment  For the purposes of Asset Management, condition assessment focuses on the likelihood of failure foragiven asset. Industry standards recognize three (3) major categories in which an asset cani fail:  Physical Failure Performance Failure Economic Failure  o Asset breaks, cracks, etc. beyond repair  Capacity, pressure, and failure to meet regulatory requirements Asset is no longer the most cost-effective solution  This AMP illustrates the condition assessment of water assets as a combination of physical and performance failure. Relevant characteristics of an asset's physical condition and performance metrics were analyzed in an effort to determine the likelihood of failure for each asset. This plan explains the current state of condition assessment and prepares a forecasted state to provide ongoing condition and performance monitoring that contributes to a better understanding  of asset condition.  9.1 Current State  For the purposes oft this project, the current state of asset condition was determined by the known metrics of each asset: age, material, diameter, capacity, etc. Each of the water main lines, fire hydrants, and water valves inventoried were prioritized for improvement/ replacement. Based on material, diameter, frequency of leaks, breaks, and observations during repairs, were used to prioritize CIP Projects to address on a "Worst first" basis. Fire hydrants were inventoried and their functionality was assessed in consultation with the Town Fire Department. Failed fire hydrants were identified and a priority for replacement was assigned based upon Fire flow criticality. The two town water storage tanks have corrective actions being taken under the 2024 Grant work  currently in the design phase.  The Town of Hertford has several recurring issues with the failure of connections with Asbestos Cement Forcemains. In addition the large volume of galvanized pipe, while smaller in diameter is also a risk factor for the Town distribution system. The age and fragile nature of the materials of both of those pipes pose a continuing risk to the system and make all repairs and repair attempts risky. The Capital Improvements Plan (CIP) identifies an intention to address those lines not fully covered in limited upcoming waterline repairs currently in the design phase with As the Town's assessment methodology matures, a more detailed and accurate inventory will be  planned construction inf 2024. included in updates to this document.  33    Hertford, NC  Hertford Sewer And Water Asset Management  9.2 Forecasted State  The forecasted state oft the water asset condition assessment is focused on increasing the known Upon completion of the 2024 Water System repair work currently in the Design phase, a fully  condition information of the distribution system. picture of the Town's inventory will be possible.  9.2.1 Leak Detection  As stated above, the system condition was determined based on the material and diameter of the distribution main asset and work orders tracking leaks and breaks. Leak detection and water audit initiatives will provide information about unreported water leaks or breaks and locations contributing to water loss. Conversion of the Town's manually read water meters will dramatically facilitate an improved identification system. Distribution main leaks, breaks, and other factors  contributing to water loss would provide additional condition information.  9.2.2 Valve Exercising  With the coming implementation of a Geographic Information System (GIS) for all of the Towns Water and Wastewater resources, including accurate location information, implementing a recurring valve exercising program will be tremendously more viable. Current valve exercising has been limited primarily due to location accuracy. Once a comprehensive inventory and locations database is complete, establishing key indicators to help the Town prioritize  renabilitation/replacement needs will be done.  34    Hertford, NC  Hertford Sewer And Water Asset Management  10 Water Criticality and Risk Analysis  Criticality refers to the level ofi importance placed on each asset in terms of maintaining the performance and integrity of the entire system, and risk refers tot the consequence oft failure placed on This plan documents the current state oft the Town water system. Further delineation oft the criticality and risk of system components will be included in updates to this document. Along with forecasting state of the system, a risk analysis will contribute to a better understanding of system criticality and risk and aid  each asset.  decision makers in funding repairs, fixes, upgrade, and maintenance costs.  10.1 Current State  For the purposes of this plan, the current state of the criticality and risk analysis focused on the assets that are not fully functioning as designed or permitted, not in compliance with NCAC water system design standards, assets inj proximity to critical infrastructure, well and storage tank supply lines. The ongoing AIA water line survey work, scheduled for completion in 2024, will provide information concerning where the Town's distribution system is not in compliance with the NCAC  standards.  The NCAC standards focused on for the current state were the minimum nominal diameter of distribution mains and the respective valves, the number of valves on crosses, tees, and hydrant  branches.  35    Hertford, NC  Hertford Sewer And Water Asset Management  10.2 Forecasted State  10.2.1  Regulatory Considerations  In 2018, America's Water Infrastructure Act (AWIA) was signed into law. This law requires drinking water systems serving more than 3,300 people to develop or update risk and resilience assessments and emergency response plans. The information gathered for the requirements of these assessments and plans will identify critical assets in respect to crucial locations within the In 1991, the Lead and Copper Rule was signed into law, with the most recent revision taking effect in. June 2021. This law was implemented to minimize lead and copper levels in drinking water. It requires drinking water systems to monitor lead and copper concentrations in the drinking water at customer taps. Systems exceeding the action level require notification to the public and action taken to reduce the lead and copper concentrations in the water by implementing applicable corrosion control and treatment requirements. Ift the system continues to exceed the action level following these actions, lead and copper pipes shall be replaced. There has recently been indication that galvanized iron pipes will be added to this list for monitoring or replacement requirements. In 1974, the Safe Drinking Water Act was signed into law, with the most recent revision taking effect in 1996. This law created the National Primary and Secondary Drinking Water Regulations. These regulations, last updated in 2009, are standards and treatment techniques that public water systems must follow. These standards include microorganisms, disinfectants and disinfection byproducts, inorganic and organic chemicals, and radionuclides. These standards are measured at the WTP, and the disinfectants and disinfection byproducts are additionally measured throughout  City, such as schools, industries, hospitals, etc.  the distribution system. 10.2.1  Hydraulic Model Considerations  As this document / program is initiated, and as the GIS system and inventory is established, connectivity updates, hydraulic model development, and review of recent and future state standards will be used to identify additional criticality and risk parameters that are important to the distribution system. Hydraulic Modeling has not been completed as of the initial  publication/approva oft this Asset Management Plan.  36    Hertford, NC  Hertford Sewer And Water Asset Management  11 Distribution System Operation and  Maintenance (0&M) Plan  Operation and Maintenance (0&M) for the water distribution system focuses on upkeep of the water mains, treatment plant, storage tanks, booster pumps, valves, and fire hydrants. Maintenance consists of "Emergency Maintenance," which is corrective action needed quickly to keep the system operational, and "Preventative Maintenance, which is routine, scheduled tasks to prevent problems before they arise. The items below represent routine maintenance items  performed throughout the collection system. 11.1 Distribution Mains  Perform routine inspection or maintenance on the following items:  Bi-annual inspection of all high priority lines. Maintain log of date, area inspected, method of inspection, and corrective action taken or initiated. High priority lines include the  following:  Two Perquimans County System crossovers  Lines contacting surface waters and lines positioned parallel to stream banks and subject to eroding in such a manner that may threaten the line Any other segment oft the system that is designated as high priority  Utilize and maintain a Water Main Break Evaluation Log, including the following items: date, location, and pictures to document the unexpected wet area  Suspected water main breaks or leaks due to unexplained wet areas on ground with the Reported water main breaks or leaks, with the date, location of break, size, material, condition, and asset identifier of water main, description of break (cause, estimated Incorporate information from new construction and rehabilitation projects, including line diameter, material, and condition, into the collection system GIS within one (1) year of construction  quantity of water lost, etc.), and summary of repair  completion.  11.2 Customer Meters  Routinely reconcile water production data against water sales records  Record non-revenue water and identify and repair leaking or under-recording customer  meters  Perform meter accuracy testing and flow meter maintenance.  Check for appropriate meter sizing and meter type for customer usage, along with checking  installation, to reduce reporting errors.  Distribution System Operation and Maintenance (0&M) Plan  37