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HomeMy WebLinkAboutWQ0023693_Annual Report_20210916 Brunswick County Public Utilities Wastewater Collection and Treatment System Annual Report July 1, 2020,through June 30, 2021 System Overview Arcadia i '^.ej ,. CeaflA Na/.�, fapenlwa I Wh'M le {�pA1wmA -- A.M..4sas..., _ Ha44b010 , Boll.n ,q. `V.. t ..3 Lake W acrama. — —___.ir...A.rr ` __'_ a br. v !.r ^ W II Bh 18bor0 .. . ... •c ;RTHEAST• , •; Rlnpa P .v v ..9011nineten `P u . c Legend \ __ �� 6 ra - . FORCE NAIN a'r 0 "T' ::)SANITARY DISTRICT; I' Myrtle Orw . a'f ., WA' Service Area 'r W OCAROJNA SHORES a .tea aA O CASW ELL BEACH Q NORTHEAST Q OCEAN ISLE BEACH f SCATRAI Ai. `j SIIALLOTTC l r .a'a 1111 WEST BRUNSWICK i I WEST 1 Ca/oh,. 4UNICPALITCS ja BRUNSWICK BAAch n.,�nn NAB inJ 5. SIMLLOTTE,gH/"'- I t a' llt ... 11 ft • , 'OCEAN ISLE ' Sn, F EACH rA• I J� t EA TRAIL t r. CAROLINA e j 1 SHORES +1/4.. . ' BRUNSWICK COUNTY WASTEWATER SYSTEM • _ t'-1 F c� S'192020 �'+ I A Prepared By The Brunon ck County Pubic UtUiee Deparbn ent History In the late 90s, Brunswick County began operating its first wastewater treatment plant (WWTP) to serve the Leland Industrial Park. Around this same timeframe, many developers constructed small metallic "package" wastewater treatment plants in order to treat wastewater from their individual residential developments. In early 2000,Brunswick County began design and construction of the Northeast Brunswick Regional Water Reclamation Facility located in the Town of Navassa.This project was completed in the summer of 2003 with an initial treatment capacity of 1.65 million gallons per day (MGD). Due to increasing demand for sewer,the Northeast Brunswick Regional Water Reclamation Facility treatment capacity was upgraded to 2.475 million gallons per day in 2013. High residential growth demand in the area served by the Northeast Brunswick Regional WWTP has continued and an additional expansion was needed. In August of 2019, Brunswick County received both a National Pollutant Discharge Elimination System (NPDES) permit renewal and North Carolina Department of Environmental Quality Authorization to Construct for an additional 2.5 MGD upgrade of this facility for a total capacity of 4.975 MGD. This facility provides sewer treatment for Brunswick County, the Town of Leland, the Town of Navassa, the City of Northwest, and residents within Brunswick Regional Water& Sewer H2GO's district (Town of Belville, part of the Town of Leland, and some unincorporated areas). The project is currently under construction and scheduled to be placed in service in January of 2022. In 2004,Brunswick County acquired assets of the South Brunswick Water and Sewer Authority(SBWASA)and Carolina Blythe Utilities which provided sewer service to communities in the southern part of Brunswick County including the Towns of Calabash and Carolina Shores. Carolina Blythe Utilities' Carolina Shores Wastewater Treatment Plant, originally constructed in the late 1970's, is an extended aeration tertiary treatment plant with a sewer treatment capacity of 530,000 gallons per day. SBWASA's Sea Trail WWTP originally served the Sea Trail development in the Town of Sunset Beach and had a 200,000 gallon per day sewage treatment capacity. In 2007, Brunswick County expanded the treatment capacity of this non-discharge WWTP to 300,000 gallons per day. In 2010, Brunswick County completed construction of a sewer collection system for those areas within the Town of Calabash not yet having sewer service and in 2012 the Sunset Beach sewer system was completed by the County. Both of these sewer collection systems convey wastewater to the Sea Trail WWTP. Since acquiring the aging SBWASA and Carolina Blythe Utilities systems, Brunswick County has made significant improvements to both the sewer treatment facilities and the sewer collection systems. Many of the sewer pump stations contributing sewer flow to these WWTPs have been rehabilitated and significant improvements to both WWTPs have been constructed including flow equalization, diversion pump stations with interconnection force mains, process improvements,and capacity improvements. The largest of the County's sewer treatment facilities,the West Brunswick Regional Water Reclamation Facility located in Supply, NC, was completed in 2006 to serve the unincorporated areas in central Brunswick County; the Towns of Supply, Bolivia, Holden Beach, St. James; and portions of Shallotte. Once completed, the existing 'package' plants serving Brunswick Community College,Winding River development,and the Town of St.James along with a facultative lagoon serving the Brunswick County Government Complex were taken out of service and all sewer flow was diverted to the new facility. As part of the agreement with the Town of Shallotte, Brunswick County assumed ownership of the Town of Shallotte's WWTP. This WWTP is a facultative lagoon, non-discharge facility with a treatment capacity of 500,000 gallons per day. Due to subsequent piping improvements constructed by Brunswick County, excess flow to the Shallotte WWTP can be diverted to the West Brunswick Regional Water Reclamation Facility. A 3 million gallon/day expansion to the West Brunswick Water Reclamation Facility was completed in 2009 to accommodate sewer treatment for the Town of Oak Island's sewer collection system. This brought the total sewer treatment capacity for the extended aeration tertiary treatment non-discharge facility to 6 million gallons per day. The plant contains a septage receiving station for septic haulers pumping wastewater from septic systems. In 2008,the City of Southport entered an agreement with Brunswick County and subsequently completed a connection to the regional transmission system to convey wastewater to the West Brunswick facility for treatment. An additional agreement with the City of Southport in 2020 allowed them to join the West Brunswick Regional Water Reclamation Facility as a participant in the regional system. As part of the agreement, the City of Southport is funding a .75 MGD treatment plant known as the Mulberry Branch WWTP.The facility will be located on property owned by Brunswick County near the existing Shallotte WWTP.Upon completion of the facility,the total system capacity of the West Brunswick Regional Water Reclamation system will be 7.25 MGD.The Mulberry Branch WWTP is currently under design with construction completion anticipated in the fall of 2023. Brunswick County and the Town of Ocean Isle Beach reached an agreement in 2012 whereby the Town conveyed the Ocean Isle Beach WWTP to the County. This facility is permitted to treat 1.050 MGD and includes a diversion pump station and force main that allows a monthly average of 0.293 MGD to be transferred to the WBR Facility for treatment. In November of 2015,the Town of Caswell Beach conveyed its utility system to Brunswick County. The Caswell Beach sewer collection system is a combination of gravity, low pressure, and vacuum systems that conveys wastewater to the Town of Oak Island's Fish Factory Road WWTP for treatment. In January of 2020,the City of Northwest conveyed its utility system to Brunswick County.The sewer collection system is a combination of low pressure and vacuum that conveys wastewater to the Northeast Brunswick Regional WWTP. In July of 2020, the Town of Navassa conveyed its entire utility system (both water and sewer)to Brunswick County. The sewer collection system consists of gravity sewer that conveys wastewater to the Northeast Brunswick Regional WWTP. Overall, Brunswick County currently operates six wastewater treatment plants with a permitted sewer treatment capacity of 10,855,000 gallons per day. The County provides retail sewer service within the municipalities of Boiling Spring Lakes,Bolivia,Calabash,Carolina Shores,Caswell Beach,Sandy Creek,St.James,Navassa,the City of Northwest, Sunset Beach,Varnamtown,and the unincorporated areas of Brunswick County as well as providing wholesale sewer treatment to Holden Beach, Oak Island, Ocean Isle Beach, Shallotte, Southport, and H2GO. The County sewer transmission and collection system consists of 645 miles of force main, gravity, low pressure, and vacuum sewer pipeline; 159 major pump stations; 3,814 manholes; and around 9,099 individual grinder pump stations. WO.. • rt.w W. i�� y Brunswick.Couraty 11,5, Public U ' - s Operations Center . t4A. . '"r-Rtiii.rwx• ,.rMri .' . ma Connection Program New developments in Brunswick County located in proximity to a sewer line are required to construct sewer collection facilities in the development and all new homes must make connection to these facilities. Existing structures are not required to make connection to sewer collection systems when new sewer mains are constructed near them; however, property owners that would like to connect to the sewer system have several options available to them: Rural Sewer Program—Allows existing structures adjacent to a high-pressure force main that have failing septic systems to connect to the high-pressure force main using a grinder pump system. Fees for this type of connection are available on the Brunswick County Web site. Additional information on this program is available at the Brunswick County Engineering Department located in the County Government Complex (910-253-2500). Staff Training and Certification The combination of large diameter, high-pressure sewer force mains, low-pressure sewer grinder systems, vacuum sewer systems,gravity sewer systems, pumping stations,SCADA system,and wastewater treatment plants requires a highly skilled and diverse staff for proper operation and maintenance. Wastewater Collection System and Treatment personnel are certified through the Water Pollution Control System Operators Certification Commission that is governed by North Carolina State law and administered through the North Carolina Department of Environmental Quality (NCDEQ). Brunswick County has 51 dedicated staff members within three divisions to provide operation and maintenance of the system: • Sewer Collection Division (19)—15 NCWPCSOCC Certified Operators • Wastewater Treatment Division (24) - 13 NCWPCSOCC Certified Operators and (6) Certified Maintenance Technicians, 3 Certified Laboratory Technicians • Instrumentation & Electrical Division (9)-4 NC Licensed Electricians To become certified by NCWPCSOCC and to become NC licensed electricians, individuals must meet certain education and experience criteria, complete required coursework, and must pass a State-administered exam. After initial certification, wastewater operators and licensed electricians are required to attend continuing education courses on an annual basis to maintain their certification. Additionally, Brunswick County provides frequent training in other areas: safety, valves, generators, HVAC, system maintenance, regulatory updates, and similar programs related to system operation and maintenance. '...�OPERATION OF WASTEWATER nWA�KtILDER s TREATMENT PLANTSFTeisruor �'� a L f {; [ es, . = Advanced Waste Treatment �` 1 k woov—A _ _ p -- A Field Study Training Progrorn . twin Laboratory Analysis Over 8,000 laboratory tests are performed annually at the West Brunswick Water Reclamation Facility's Lab by certified laboratory staff to ensure compliance with Division of Water Resource's Water Quality Section requirements and National Pollutant Discharge Elimination System (NPDES) permits. On-site laboratory analysis allows for expedient operational adjustments to ensure efficient operation of the plant to maintain permit limits for the treated water leaving the plants. Brunswick County has an extensive reuse program that requires a high degree of treatment prior to using the treated wastewater(reuse water)for irrigation purposes. * ri • 4a, EL Treated Wastewater as a Resource Historically, once treated wastewater leaves a wastewater treatment plant it has been discharged into a stream or river. Some of Brunswick County's WWTPs do operate this way, but a larger percentage of our WWTPs have been permitted as non-discharge facilities. Rather than discharging treated wastewater to a stream or river, a non- discharge WWTP uses the highly treated wastewater for large-scale irrigation. The highly treated wastewater is termed "Reuse Water". Brunswick County operates over 25 miles of reuse force mains that supply reuse water for irrigation to eleven golf courses and 1,040 acres of dedicated tree and turf farms at four different locations. Using reuse water for irrigation has several advantages. One major advantage is that in many instances reuse water can be used in lieu of potable water from the County's water system that would have been used for irrigation. This reduces the peak loading on the water system which ultimately reduces costs and helps to stabilize rates. Additionally, using reuse water for irrigation allows golf courses to reduce the amount of fertilizer utilized on the golf course. Golf courses utilizing reuse water for irrigation include those in Sea Trail, Winding River, and St.James. Residuals Management The Wastewater Treatment Division oversees the disposal of biosolids from each of the wastewater treatment facilities. In 2020, Brunswick County produced 1,044 dry tons Class-A Biosolids and 75 dry tons of Class-B Biosolids. The biosolids are land-applied as soil amendments on farm fields by the County's residuals contractor. The County is continuing to research additional disposal&treatment alternatives and has recently completed a study on long term Biosolids management. ii •-tt -44 @ - ' x �# ti • := "' yip ?� Fiscal Year 2020-2021 Highlights • Installation of 606 grinder pump stations in low pressure sewer areas • Design of the .75 MGD Mulberry Branch WWTP,which will be an expansion of the West Brunswick Regional Water Reclamation system and serve the City of Southport • Forest Management Plan -timber sales generated$140,405 in additional revenue • Rehabilitation of a large regional sewer pump station (Commerce) to include reconfiguring piping, valves, and recoating of the wet well • Implemented odor control improvements in several problematic areas • Ongoing construction of the 2.5 MGD expansion at the NEBR WWTP and associated transmission system upgrades Planned Fiscal Year 2021-2022 Capital Improvements • Sea Trail WWTP improvements • Ocean Ridge Reclaimed Water Main • Finalize permitting, bidding,award and beginning construction of the 0.75 MGD Mulberry Branch WWTP • Odor Control Replacement at 2 major Pump Stations • Complete construction and begin compliance testing of the 2.5 MG expansion at the NEBR WRF • Implementation of ARV and Valve Exercising Program • Construction of a 250 GPM sewer lift station, associated gravity sewer and force main to serve the International Logistics Park(ILP) located on U.S. 74-76 • Construction of a 600 GPM sewer lift station, associated gravity sewer and force main to serve the Mid- Atlantic Rail Park(MAP) located on U.S. 74-76 5 Year Forecast: • Complete construction and compliance testing of the 0.75 MG plant (Mulberry Branch WWTP) • Implementation of a Residential Reuse Program • Completion of Wastewater Masterplan and implementation of recommendations through our CIP or alternative funding sources Brunswick County Public Utilities Wastewater Collection and Treatment System Annual Report July 1,2020,through June 30, 2021 House Bill 1160, the Clean Water Act of 1999, requires entities that own or operate wastewater treatment and collections facilities in North Carolina to provide customers with an annual performance report. This report is available for viewing at the Brunswick County Public Utilities Operations Center or by logging on to our Web site at <www.brunswickcountvnc.gov>. Customers will be notified of its availability by printed notice on sewer bills. Questions, comments, or requests for paper copies of this report should be directed to the Brunswick County Public Utilities Department at 910-253-2657. This report has been completed by staff of the Utilities Department and is accurate to the best of our knowledge and belief. Tim Costin Timothy Webb Wastewater Collections Superintendent Wastewater Operations Superintendent 910-253-2681 910-253-2479 �' �� p r s _ fit,: , � L.,„•,**,-) - .. - .: '. : 1 - v ' ' z l��� 1• � a` ..,/ 7 ,. •' r s 4 , , 1 . . WI 1p ' :, c ,, . - ' • • - -� . iw k et L t R L4 d 71, .T# j �i i' r West Brunswick Water Reclamation Facility Operator in Responsible Charge: Michael Garrity Phone: 910-253-2889 Permit(s): WQ0023693 (Non-Discharge) Facility Description: • Permitted Flow: 6.0 million gallons per day • Treatment Type: Extended Aeration, Tertiary Treatment, Biological Nutrient Removal with Autothermal Thermophilic Aerobic Digestion (ATAD) process for solids handling • Discharge: Non-Discharge Permit—Reuse water applied to golf courses, infiltration basins, and dedicated tree farm surface irrigation sites Performance: Monthly Flow and Rainfall 180.00 West Brunswick WRF July 2020 - June 2021 10.00 160.00 9.00 +Q 8.00 140.00 7.00 120.00 > 6.00 0 a o 0 v, 100.00 w z = o U 5.00 Q0 80.00 0 :_iz o cc LL 4.00 2.00 60.00 a 3.00 ri. 40.00 .i r. 20.00 1.00 0.00 0.00 July Aug Sept Oct Nov Dec Jan Feb March April May June Rainfall 7.12 9.25 9.21 4.85 8.68 3.98 5.54 7.83 2.52 1.54 0.64 9.22 • Flow MG/Mon. 165.85 145.34 134.41 123.88 118.77 109.56 111.06 127.47 124.26 117.12 113.63 136.84 • Annual Average Daily Flow: 4,190,151 gpd • Maximum Daily Flow/Date: 7,445,000 gallons February 19, 2021 • Total Annual Flow: 1,528,174,523 gallons • Total Rainfall: 70.38 inches • Notice of Violations (NOV's) were received in JanuaryNOV-2021-LV-0223 and February2021 (NOV-2021-LV- 0475). ( 0475). During these months,the facility experienced an inability to dispose of biosolids due to adverse weather conditions.The excess solids within the system caused an exceedance of daily Total Suspended Solids(TSS)limits for both months. The facility also exceeded the monthly limit for TSS in February and exceeded the BOD daily limits. ' 1i► 'Or 'wit .. 1.-4 i -1. .t..414:0004%., qiv" .i 4,14,t 4 • • --..-- \ , I.•, iro,_,...,*6...0:7*--"-' '-'1"` •-* 'i'l.... -.t• chi i tt ` 4k„ o 00- ty4 t, 40 ,:...N, may. ,.. • \ t , , i t . . ...• • A LOVIN r . NE BRUNSWICK WWTP 5-15-20 Northeast Brunswick Water Reclamation Facility Operator in Responsible Charge: Matthew Henry Phone: 910-383-2811 Permit(s): NC0086819 (Discharge) Facility Description: • Permitted Flow:2.475 million gallons per day • Treatment Type: Extended Aeration, Tertiary Treatment, Biological Nutrient Removal with Autothermal Thermophilic Aerobic Digestion (ATAD) process for solids handling • Discharge: Discharge Permit—Cape Fear River Performance: Monthly Flow and Rainfall Northeast Brunswick WRF July 2020 - June 2021 76.00 16.00 74.00 .\/ °\j' - 14.00 72.00 iP 12.00 70.00 • 10.00 y T¢ 68.00 Qo o N• z = o .. U 66.00 8.00 z 1.0- J 3 a LL o z LL 64.00 6.00 62.00 4.00 60.00 1 _ 2.00 58.00 . 56.00 0.00 July Aug Sept Oct Nov Dec Jan Feb March April May June Rainfall 6.26 6.49 7.51 3.75 7.85 3.25 5.05 8.35 1.51 IMMIEM 13.43 • Plant Flow 74.33 71.65 74.20 73.41 74.23 72.38 74.62 75.06 74.52 66.59 EMICEI • Annual Average Daily Flow: 2,354,516 gpd • Maximum Daily Flow/Date: 3,680,000 gallons September 17, 2020 • Total Annual Flow: 863,137,000 gallons • Total Rainfall: 67.66 Inches • A Notice of Violation (NOV)was received in February 2021 (NOV-2021-LV-0164),the facility exceeded the 4.75 MGD permitted capacity due to excessive rainfall. A NOV was received in April 2021 (NOV-2021-LV-0390) for the facility exceeding the monthly limit for Ammonia Nitrogen(NH3).Staff believes this exceedance was caused by an excessive amount of biosolids within the system. The inability to dispose of biosolids was caused by adverse weather during January and February. . w to • its 1!, Ocean Isle Beach Water Reclamation Facility Regulated Entity: Ocean Isle Beach Water Reclamation Facility Operator in Responsible Charge: Scott Leonard Phone: 910-579-9365 Permit(s): WQ0006085 (Non-Discharge) Facility Description: • Permitted Flow: 1.050 million gallons per day • Treatment Type:Sequencing Batch Reactor • Discharge: Non-Discharge Permit — Reuse water applied to dedicated tree farm and turf farm surface irrigation sites Performance: Monthly Flow, Diversion Flow and Rainfall Isom woo Isle Beach WWTP June 2020-July 2021 l000 16.000 9.00 8.00 14.000 _ - 7.00 :::: z � 5.00 2 J J J l7 :::: 3.00 4.0001111114 2.00 2.000 1.00 0.000 0.00 July Aug Sept Oct Nov Dec Jan Feb March April May June Rainfall 7.33 7.66 6.47 4.77 8.58 3.98 5.65 7.21 2.86 2.01 0.68 7.76 •Flow MG/Mon. 14.848 13.996 11.964 8.124 8.606 6.952 6.480 5.654 10.541 9.858 13.318 16.653 • . 1P—Div.Flow MG/Mon 12.837 6.920 4.382 5.833 4.150 2.776 3.322 5.437 4.476 3.251 1.984 6.130 • Annual Average Daily Flow: 347,228 gpd • Maximum Daily Flow/Date: 804,535 gallons July 3, 2020 • Total Annual Flow: 126,993,776 gallons • Total Flow Diverted: 61,498,562 gallons • Rainfall Total: 64.96 inches • No compliance issues were noted for this facility during the reporting period. 3. `{y 1�' ,.T ` { _ is.�. R: 0,'4f 9 5 - u ..a r ti•`\ryiA c' i j $t r�. , i L y.�. •.ciJa 8' ,lia ig ,rp .✓',. - a .y�,, _ • yam" *� ' .... 3 �•S' �r ram' ash r`' '#'' 40. f 7- . i ,• /i 7 • �� --- �, s . *sib -,. } _ _ r 1 Y� t } ...., --.... 4 y ,.... ,) ., 4. , .., . ..._ . .. ,, . .., ., 4 „, „--- , . - `•., Carolina Shores WWTP Regulated Entity: Carolina Shores Wastewater Treatment Plant Operator in Responsible Charge: Aaron Hewett Phone: 910-579-5323 Permit(s): NC0044873 (Discharge) Facility Description: • Permitted Flow:0.530 million gallons per day • Treatment Type: Extended Aeration,Tertiary Treatment • Discharge: Discharge Permit—Tributary to Persimmon Swamp, Lumber River Basin Performance: Monthly Flow, Diversion Flow and Rainfall 16°°tarolina Shores WWTP June 2020-July 2021 12.°0 14.000 10.00 12.000 8.00 10.000 z 0 8.000 6.00u Z Q Q o LL 6.000 cc 4.00 4.000 2.00 2.000 0.000 0.00 July Aug Sept Oct Nov Dec Jan Feb March April May June as Rainfall 8.28 7.85 9.72 4.26 7.98 3.49 5.51 8.16 2.99 1.58 0.99 6.10 Flow MG/Mon. 12.401 13.217 12.870 13.360 12.845 12.327 10.910 10.774 11.308 10.537 10.332 11.277 Div.Flow MG/Mon 5.511 4.555 4.805 4.018 4.458 4.635 5.751 4.525 3.762 6.077 5.781 4.608 • Annual Average Daily Flow: 389,507 gpd • Maximum Daily Flow/Date: 522,000 gallons December 2, 2020 • Total Annual Flow: 142,158,000 gallons • Total Flow Diverted: 58,486,570 gallons • Rainfall Total: 66.91 inches • No compliance issues were noted for this facility during the reporting period. • 1 ^ r 1 I ' �. , l r ;,::v.. V .,.4�M`..w r f , T r .r .d10 r *r a Shallotte WWTP Regulated Entity: Shallotte Wastewater Treatment Plant Operator in Responsible Charge: Mike Garrity Phone: 910-253-2496 Permit(s): WQ0000798 (Non-Discharge) Facility Description: • Permitted Flow:0.5 million gallons per day • Treatment Type: Facultative Lagoon • Discharge: Non-Discharge Permit—Effluent water applied to tree farm surface irrigation sites Performance: Monthly Flow, Diversion Flow and Rainfall 14.000 Shallotte WWTP June 2020-July 2021 14.00 12.000 12.00 10.000 10.00 x x z z 8.000 8.002 4 LU J Z J Q 6.000 6.00LL o ? -.U- 4.000 -_ 4.00 Q 2.000 4.00 0.000 0.00 July Aug Sept Oct Nov Dec Jan Feb March April May June =Rainfall 8.65 11.50 8.50 5.13 Lsi 3.63 5.09 5.54 En 2.90 1.12 9.89 -*-Flow MG/Mon. 7.231 6.522 6.882 3.228 4.693 5.682 6.492 6.681 5.903 6.308 6.864 7.047 -Div.Flow MG/Mon 6.847 8.052 7.283 9.303 8.026 13.086 8.242 8.780 7.375 8.239 6.871 6.453 • Annual Average DailyFlow: 200 997 gpd g • Maximum Daily Flow/Date: 521,861 gallons November 12, 2020 • Total Annual Flow: 73,224,169 gallons • Total Flow Diverted: 98,557,407 gallons • Total Rainfall 71.87 Inches • No compliance issues were noted for this facility during the reporting period. _ • f` �'--'-•�Y ,�..� tr.t.,+ ,.. ,h ,r ,..a.. .,ks,.''%k....r.ic.... .,t 4 .•.+.w,:�i.';:dur...d ..i�'"�.. ,n.ra� - , -t / ; AMR" .iw^sta 1 —_P^ r- - 1.- ✓-r- y-v 4 .0 t` 3T`�.1 pi . s!r ..' ram. — __ — Irel F ///,'1' ‘I re; 7 • - , _, 1 �F1 Y 1,$4, �[ Nr�:,.H3. L ar': -.1 •- ` 54. ,,,,A e+t s ✓ &,f ;NI w. 4iiNfor _ Sea Trail WWTP Regulated Entity: Sea Trail Wastewater Treatment Plant Operator in Responsible Charge: Clint Humphrey Phone: 910-279-9845 Permit(s): W00012748 (Non-Discharge) Facility Description: • Permitted Flow:0.3 million gallons per day • Treatment Type: Extended Aeration,Tertiary Treatment • Discharge: Non-Discharge Permit—Reuse water applied to Sea Trail golf courses Performance: Monthly Flow, Diversion Flow and Rainfall 30.000 Sea Trail WWTP June 2020-July 2021 12.00 25.000 10.00 20.000 - 8.0(- Z H O O g Z ' Z O 15.000 6.00J � J a � z 3 a o J LL 10.000 11 4.00 5.000 Dili 2.00 0.000 0.00 July Aug Sept Oct Nov Dec Jan Feb March April hal June • mot Rainfall 9.29 10.04 7.80 5.07 8.48 4.16 5.75 8.37 2.90 1.95 0.97 7.45 �•�Flow MG/Mon. 6.303 5.931 7.005 7.079 6.067 5.612 5.601 4.889 4.732 5.026 5.272 4.480 emi•-Div.Flow MG/Mon,24.319 22.148 EMI 15.025 16.870 17.559 18.100 18.134 17.956 17.835 21.620 • Annual Average Daily Flow: 191,523 gpd • Maximum Daily Flow/Date: 287,000 gallons September 28, 2020 • Total Annual Flow: 67,997,000 gallons • Total Flow Diverted: 222,564,449 gallons • Total Rainfall: 72.23 inches • A Notice of Deficiency(NOD)was received in July 2020(NOD-2020-LV-0177).To correct the deficiency air supply was increased to the treatment process. Overall Gallons Treated and Percent Flow/Treatment Plant Sea Trail: Total Flow Per Plant 85,136,800 Gal/YR 3% C.Shores: Shallotte: 142,158,000 73,224,169 Gal/YR OIB: / Gal/YR 126,993,776 5% 3% Gal/YR 5% • NEBR: 863,137,000 Gallons/Year 30% • • WBR: 1,528,174,523 Gallons/Year 54% Brunswick County Collection System Regulated Entity: Brunswick County Wastewater Collection System Operator in Responsible Charge: John Gregory Phone: 910-253-2706 Permit(s): WQCS00284 Facilities Description: Gravity Mains Low Pressure Vacuum Force Main Miles of Line 154 214 21 256 Facility Type Total Traditional Major Pump Stations 159 Vacuum System Stations 3 Low Pressure Grinder Pump Stations 9,099 Manholes 3,814 Performance: Feet of Gravity Line Cleaned & Inspected: 135,270 Percentage of Gravity Line Inspected: 10% Number of manholes inspected: 586 2020-2021 Collection System Flows 300.00 250.00 200.00 J 150.00 100.00 50.00 0.00 ul .ug. �ep c o e a e March pri a�un� III 280.96 256.66 247.32 229.08 225.21 212.51 214.86 230.53 231.26 215.44 212.23 262.78 Reportable Sanitary Sewer Overflows Brunswick County reports Sanitary Sewer Overflows in accordance with North Carolina General Statutes and NCDEQ guidance. Discharges of 1,000 gallons or more of untreated waste to the surface waters of the State require Publication of Notice of Discharge. When Sanitary Sewer Overflows occur, it is standard practice to inspect and remove the source of any blockages;repair, refurbish,and renovate collections facilities;and to clean up and disinfect spill areas. Date Location Volume Known Corrective Measures Taken Environmental Impacts 07/09/2020 Near 600 Ocean 150,000 None Transfer pump station was Isle Beach RD.SW isolated,with valve isolation in both directions, excavated, cut out damaged 14" pipe and replaced. Residual sewer in the area was removed by pumper truck and area was lime stabilized. 07/31/2020 Saltaire 4,500 None Station was shut down and Drive/Saltaire valves closed to isolate the Village 483 Deer break,repairs made with Path schedule 40 4" pvc pipe, Hymax repair coupling and 2- 45 elbows. Residual sewer was removed by pumper truck and the area was lime stabilized. 12/02/2020 7040 Ocean 50,000 None Flow was diverted away from Highway West, the affected area; Ocean Isle Beach upstream/downstream valves were isolated. Repair was completed by installing new pipe and Hymax repair clamp which took the deflection and strain off the damaged joint. Flow was stopped and residual sewer was removed by pumper truck and area was lime stabilized. 02/25/2021 Calabash Rd. NW 170,000 None Upstream/downstream valves near Seneca St. were isolated to stop flow so NW that repairs could be made. Full section of pipe(20')was replaced using 8"C900 pipe and 2-8"Hymax repair clamps.An N.C.D.O.T. drain culvert had been replaced under our 8" PVC force main causing the pipe to sag over time and creating a fracture. Residual sewer was removed with pumper trucks and affected area was lime stabilized. - aw— _ may a. :. ii_ _ ,...... . __ _ _ .._ _ 4..... .,._ . _ - ...._ _ _. ,_ .,... - - ._ - .,., It._ • • _..... .. .- .‘. _ ,.. . , „TN.... __ ,_ ..,. ... _ ,. .. _ ...., ... _ ... .h 4,,, _ _ r 1 .r `-. i - ."t.."."".... '.7..1..-,,ii '''...i'NIL . t fj \ ..7. � �� .nth C Al `�' - . What is a Sanitary Sewer Overflow? A sanitary sewer overflow is a condition whereby untreated sewage is discharged prior to reaching sewage treatment facilities. Despite the best efforts of Brunswick County Public Utilities staff, sanitary sewer overflows (SSOs) occur in Brunswick County, just as they do in every other sewer system. The North Carolina Department of Environmental Quality Division of Water Resource's Water Quality Section defines a reportable SSO as any spill to surface waters of 1,000 gallons or more. Causes of Sanitary Sewer Overflows The most common cause of SSOs is due to grease deposits blocking sewer pipes resulting in the escape of raw sewage through manholes,sewer clean outs,and other entries into the sewer collection system. Sewer blockages also occur due to foreign objects being dropped into sewers and manholes, the flushing of non-biodegradable materials down the toilet,and the growth of roots into the sewer system piping. Excessive rainfall can also overload the sewer piping systems and pump stations. Additionally, the cutting of sewer mains by contractors and property owners during excavation has become more problematic as Brunswick County becomes more urbanized. SSOs may also occur due to the failure of pipe or other mechanical equipment. What Brunswick County Public Utilities is doing to prevent and reduce Sanitary Sewer Overflows All pump stations and plant sites are equipped with a Supervisory Control and Data Analysis (SCADA) system that provides automated reports and high-level alarms to operators tasked with monitoring the sewer system around the clock. Brunswick County staff is available 24 hours per day, 7 days per week to respond quickly to emergencies to prevent SSOs from occurring. Moreover, Brunswick County Public Utilities staff provides daily checks and maintenance to the piping,valves, pump stations,treatment facilities, and other components of the sewer system to minimize failures and maintains generators at each pump station for backup power during outages. Additionally, Brunswick County employs a contractor specializing in televised inspection of sewer mains to analyze at least 10%of its gravity sewer system each year. When repairs and blockages are noted, County staff expeditiously make the needed repairs and maintenance using its wide array of construction equipment, jetting equipment, vacuum truck, and tanker truck. County staff constantly monitors system pressures,capacities,and conditions of the system to make recommendations for needed rehabilitation projects and capital projects to ensure adequate capacity. County staff also routinely mows utility easements to provide accessibility for inspections and repairs. As part of its Fats,Oils,and Grease (FOG) Program, Brunswick County helps to educate customers on the proper disposal of these items to minimize sewer blockages and encourages the public to contact Public Utilities if they see deficiencies or misuse of the sewer system. Additionally, Brunswick County is part of the NC 811 call system (www.NC811.org)that seeks to avoid utility damage due to excavation by the general public and contractors by providing proper notification and utility location services. What You Can Do to Prevent Sanitary Sewer Overflows 1. Contact Brunswick County Public Utilities if you see a maintenance issue, SSO, or someone misusing the public sewer system. 2. Never pour grease down sink drains or into toilets! Put grease in a disposable container and dispose of in the garbage or recycle where available. 3. Put strainers in kitchen sinks to catch food and debris and empty them into the trash. 4. Put wipes, napkins, cat litter, cotton balls, hygiene products, and latex products into the trash; never flush these down the toilet. 5. Speak with your neighbors about how to keep grease and other materials out of the sewer. Sewer blockages from grease and other foreign materials do not just impact the person putting them down the drain! When an SSO Occurs... Through active monitoring,maintenance, repair,staff training,investment,and outreach programs,Brunswick County Public Utilities seeks to be a good steward of the environment; however,even with due diligence,all utilities providing sewer service will experience SSOs from time to time. When an SSO occurs, Brunswick County takes the following corrective actions: • Notification of the public in accordance with Division of Water Resource's Water Quality Section guidelines • Remove blockages from piping • Repair, refurbish, and renovate damaged or inadequate facilities • Cleanup and disinfection of spill area • Increase inspection frequency as warranted • Construct capacity improvements as warranted 1.;7 � 1 Letts TacVie the Crease in This Kitchen! Why should t help? • Prevent grease buildups from blotting sewer lines. • Stop sewer overflows into streets and storm drains. • 14duce the number of times you have to clean your grease trap(food services) e DO Don't • Save money spent on costly cleanups of sewage spills. • Protect the quality of our water. Put oil and grease r 44_ Don't run water over , •,11; 1 in covered i dishes, Pans, fryers,and 'S' c-ollec.tion containers. griddles to wash oil and ;t .l„Hi. grease down the drain. �. �� Don't rinse off oil and �: grease with hot water. ti„ Scrape. food straps from Don't pour oil and + r irellill_ dishesinto trash cansand i� �r -raise down the rba aba sad15 OSerain. ill 9a 9 9 P of properly. !{void using A your garbage disposal, 1 Remove oil and grease from rom, Don't put food scraps dishes, pans, fryers, and down the drain. --f_- -6 ; ., griddles, Cool first before alth you skim, scrape, or wipe off kilo it, excess grease. Prewash dishes and NB pans with cold water before putting them in More Ways to TacKle Gtrease 1 the, dishwasher. eel' Use environmentally safe cleaning produtis instead :+=tit. ' ` of harsh detergents or cleaners that can damage •4 t i sewer lines. r+ C-over kitchen sink with If you generate large amounts of used cooing oil, catch basxet and empty reticle rt. To find a recytkr, chect the phone boot i into garbage can as under "retyclers or "rendering companies' rr— 7 needed. tit„ 'f If you generate small amounts of used tooting oil, "'-;f pour tt into a container you can throw away. Never pour tt down the drain. r~ Cover floor drain with Stars a compost pile ik--. AF'Ilit'INI4 111, at your hoe with scraps that fine screen and empty into garbage can as are not meat Find out about composting in the TC_U publication, "A Gruen Gutde to Yard Care needed, (Lit-028) -hit fIttr roe made poebibie thanKc io informslion eaten from the Tesfe Gstnmiesion on Environmental Quality's flier trot-tqo. ji .ombatamo la grasa on osta cocina! �por que tenc�o que a�ttdar? Para 9 wtar acumulaciones de grasa que obetruian las tubcriae do dose ue. • Para impedir 1os deebordamientos del sietema de alc.antanllado. • Para ahonar dinero que se gastana cn limpiczas costosas de er drames dcalcantarillae. lii �R! IN0 •• Para reducir la frecuenua con quo se benen quo limpiar las j R i trampas de gran (eervicio de alimentoe)- • Pan proteger la calidad de nucstra agua. Poner el aceite y la No enjuagar platos, ollas, IA 0.♦ grasa en rec.ipientes Au sartenes ni planchas con — cerrados para su 1 9 aqua para verter el aceife y _`--li re.oleccion, — '717 la grasa en e1 desagiie, .,,,,„,i No enjuagar el au:ite ni la .i I . grasa con aqua caliente, Quitar las sobras de No verter accite ni comida de 1os trastes, I ill : a • grasa por el • 016 7=; _�`,ti tirartas en bolsas de basura desague. • I �� desecharlas de la forma �t 1�^t ry'-_1 vs, Ariri, dehida. fvitar usar e1 triturador de basura. tel. %mil guitar el aceite y la grasa de No firer sobras de los platos, ollas, sartenes y comida por el desagiie. arrllas. Pritnero enfriar L 1 I,g,,, ' ..o.i.,jp_.„:s.,.., - antes de tallar o limpiar e1 _t- eiceso de grasa. }r i.. r.njuagar 1os platos y IN ollas con aqua fria antes de ponerlos en tsit s mantras de conibatir la grasa el tavaptatos. Use productos de limpieza seguroa para el medio .,o' `,.y'a ambiente en lugar de detergentes o limpiadores T abrasivos que puedan danar las tuberias de desague- /+ C-olocar en el freladero Si genera grandee cantidades de aceite comestible de la c.ocina una usado, reciclelo.Si desea encontrat un centro de canasta para depositar recictaje,busque en el directorio telefonico bajo :-- ,I los desechos vaciarla "reciclaie l ti4u en el bote de basura Si genera pequenas cantidades de ace ite comestible confornte sea necesarl0. usado, luego viertalo en un recipients que pueda tirar- No to vierta nunca en el desague. Im,VIP C.uhrir e1 desa iie del •,..---„.., ppisv con tin te,daio Empiece a hacer abono en au casa con sobras de alimentos que no contengan came. Infonnese acerca fino y tirarlo en al • de la tecnica de abonar en la publicacion de TGEQ: ' bote de• basura Una Guia Verde para e1 Cuidado del Jardin(GI-028). .` conforme sea __—�� neGesarlo, Eels Woe INi baeade sr inforteacion Iesudo,dcl foible G1-Z/o de la cornicion do C.alidad l'mbitntal do Ytsasr.