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HomeMy WebLinkAboutWQCS00268_Annual Performance_20200303 cysonvi//e, CIty of Jacksonville Public Services Department PO Box 128•Jacksonville NC 28541-0128•910 938-3620 2019 Annual Performance Report Land Treatment Facility and Collection System I. General Information Facility/System Name: Jacksonville Land Treatment Facility RECEIVED Responsible Entity: City of Jacksonville MAR 0 3 2020 PO Box 128 Jacksonville, NC 28541-0128 NCDEQ/DWR/NPDES In Charge Contact: William E. Brown, Chief Operator Anthony Futrell, Utility Services Superintendent Applicable Permits: Non-Discharge Permit No. WQ0009267 Collection System Permit No. WQCS00268 The City of Jacksonville's wastewater collection system is composed of approximately 300 miles of sanitary sewer lines and 45 wastewater pumping stations. Twenty of these pumping stations have on-site generators to provide power in the event of power failures and the other 25 pumping stations have standby connections, which allow them to be powered by portable generators during power outages. In addition, 39 of the pumping stations also have bypass connections that allow the use of portable bypass pumps that will redirect water flow if a power outage occurs. The City currently owns 5 portable generators and 3 portable bypass pumps. The City's Utilities Maintenance Division staff consists of 27 employees and is responsible for maintenance, repair and the proper functioning of the sewage collection system and the maintenance and efficient operation of the wastewater pumping stations. This Division provides routine inspections of the City's manholes and is responsible for jetting sewer lines to clear blockages. This staff also provides preventive maintenance to all the wastewater pumping stations and generators to ensure optimum operation. A section within the Division is responsible for ensuring all privately owned grease traps are maintained within the City ordinance requirements. The Utilities Maintenance Division also has an Inflow & Infiltration (I&I) Analyst on staff to identify, document, and reduce inflow and infiltration into the City's collection system. The Jacksonville Land Treatment Site (LTS) totals 7,400 acres of land and is responsible for the treatment and land application of the City's wastewater. The system is presently designed to treat 9.0 million gallons of wastewater daily via spray irrigation of 2,300 acres of primarily loblolly pine trees. Wastewater is transported 8 miles from Jacksonville to the LTS by a 36-inch diameter force main. The wastewater is treated with hydrogen peroxide for odor removal prior to flowing into the headworks facility. At the headworks facility, the influent (raw wastewater) passes through dual Huber Step Screens where material greater than 1/8 inch in size is removed. The wastewater then flows into an aerated grit and grease removal system where inorganic material and floating materials are removed. From there, wastewater flows into a series of aerated lagoons where biological treatment of the waste occurs. Secondary treated wastewater then flows into storage lagoons where it is held for irrigation. The storage lagoons have a capacity of 690 million gallons and provide storage of treated wastewater during periods of inclement weather and when spray irrigation is not feasible. The treated wastewater is chlorinated to eliminate harmful bacteria and then used to irrigate 2,300 acres of pine forest on the LTS property. oysonvi//e 0 Cityof Jacksonville � -- Public Services Department PO Box 128•Jacksonville NC 28541-0128•910 938-3620 The irrigation fields have three classifications of soil types: Well-drained, Moderately Well-drained, and Seasonally Suitable. These irrigation fields are divided into 28 blocks and the annual hydraulic loading for each block is a permitted maximum ranging from 49.0 to 62.6 inches/acre, depending on the relative percentage of each soil type. As the pines mature and their ability to store nutrients decreases, the mature trees are harvested and used for pulp wood. Young seedlings are planted to repeat the cycle. The Land Treatment Facility is staffed by the Chief Operator, seven Wastewater Plant Operators, three Plants Maintenance Mechanics, one Plants Maintenance Worker, a Crew Leader, and three Equipment Operators. The Laboratory Section is also housed at the LTS and is staffed by the Supervising Chemist, assisted by two Laboratory Technicians, who performs all the required analyses and is responsible for the certification of the wastewater laboratory. II. Facility Performance The City of Jacksonville's Land Treatment Facility treated 1,682 million gallons of wastewater during the 2019 calendar year, at an average daily flow of 4,607 million gallons. Hurricane Florence effected the City of Jacksonville on September 12, 2018. During 2018, record rainfall of more than 100 inches increased irrigation and storage lagoon levels at the facility. To maintain the permitted freeboard level of 2.0 feet, City staff followed the guidelines of the Emergency Action Plan required by its permit and implemented emergency irrigation on December 17, 2018. Through notification and discussions with North Carolina Department of Environmental Quality (NCDEQ) Wilmington Regional Office emergency irrigation at the facility continued throughout 2019. At no time during the calendar year of 2019 did the facility violate the freeboard level of 2.0 feet. In accordance with the permit, City laboratory staff collected surface water samples as stipulated by the guidelines of the City's Emergency Action Plan. There were no negative findings in any of the surface water samples collected. As a result of emergency irrigation, the City exceeded the annual hydraulic loading rates in multiple blocks during 2019. The City of Jacksonville is actively working in conjunction with the NCDEQ Wilmington Regional Office to re-evaluate the permitted annual hydraulic loading rates to ensure that the facility continues to operate efficiently. There were no other violations of monitoring or reporting requirements during the 2019 calendar year. III. Collection System Performance There were three (3) reported overflows from the collection system during the 2019 calendar year greater than 1,000 gallons in volume. The locations with overflows that exceeded 1,000 gallons were as follows: • February 12-26, 2019: Wardola Drive (manholes #796 & #4723) approximately 273,600 gallons of untreated wastewater was estimated to have spilled and reached surface waters (East Thompson School Creek). The reinforced sewer line crossing East Thompson School Creek partially collapsed. Upon location of the collapse, the necessary repair was completed immediately and remediation efforts followed. • May 23, 2019: Brynn Marr Pump Station (manhole #5121) approximately 2,800 gallons of untreated wastewater was estimated to have spilled. The sanitary sewer overflow was a result of system error. The necessary repair was completed immediately and remediation efforts ensued. • July 29, 2019: Clea Street, Holiday City Mobile Home Park (manholes #4915 & #686) approximately 2,100 gallons of untreated wastewater was estimated to have spilled. A buildup of grease caused the sanitary sewer overflow. The grease blockage was removed and the City continues to educate its citizens on the proper disposal of grease. 2 ,aconvif/e,y. City of Jacksonville Public Services Department PO Box 128•Jacksonville NC 28541-0128•910 938-3620 The City maintained constant communication with NCDWQ after each of these events to ensure full compliance with Environmental Laws and Regulations. The City continues to identify and remediate inflow and infiltration, as well as rehabilitate wastewater infrastructure to prevent further overflows. IV. Summary The City of Jacksonville's Land Treatment Facility and collection system performed excellently during the calendar year 2019. The total rainfall for 2019 was 39.97 inches at the Administration Building of the Land Treatment Facility and the total influent and effluent for 2019 was 1,682 million gallons and 1,832 million gallons, respectively. The City has ongoing maintenance programs to ensure the wastewater collection system continues to function effectively. The City utilizes cured-in-place lining, point repairs, and manhole lining to reduce or eliminate inflow and infiltration. Other measures include the rain stopper program, fats, oils, and grease management, and pump station maintenance. The rain stopper program is a continuous effort to insert rain stoppers in manholes to prevent or minimize overflows when heavy rainfall occurs. The Fats, Oils, and Grease (F.O.G.) Management Program attempts to mitigate blockages and other issues through ordinances, grease interceptors, cleaning and maintenance, as well as education and awareness efforts. In Jacksonville, there are 194 establishments with grease interceptors that must be cleaned every 30 days. They are also regularly inspected to ensure compliance. Lastly, the City has a program that evaluates and replaces pumps in wastewater stations that fail or are over 20 years old. 3 I certify under penalty of law that this report is complete and accurate to the best of my knowledge. I further certify that this report has been made available to the users or customers of the named system and that those users have been notified of its availability. a/14 � - 3. Responsible Person and Title Date aa - a � - a,oA° Responsi Person and Title Date ..,ter�� i�JIn