F zri] t- 4 a rrl F *l F Fl ca h {-) op{ U c1 t*{ {-) () -o dn rf{ F{ Iq +r o h+-) The Rogerson Wastewater Treatment Facility is a secondary treatment which utilizes a conventional activated sludge process to produce a high quality effluent. lt also has the capability to utilize a Biological Nutrient Removal process to eliminate nutrients (nitrogen and phosphorus) from the effluent. The facility has a design capacity of 4.5 MGD (million gallons per day) with a peak flow of 11.25 MGD. Wastewater is received at the facility via two pipes; a 24-inch force main from the downtown area and an 8-inch force main from the north side of town. The make-up of the wastewater is primarily domestic with some light industrial wastewater. The treated wastewater is permitted for discharge into the Pasquotank River. The sludge that is produced is thickened and stabilized with lime to meet Class B requirements as defined by EPA regulations then hauled to permit area in the county to be land applied. 'Ql t l,riilrt \' '.11, \.,'r. Rogerson Wastewater Treatment Rich Olson, City Manager Tefephone: 252-331 -6864 ofi U Paul Fredette, Director Telephone: 252-337 -6628 NC00250 l. NPDES Permit 08184. Air Quality Permit WQ0002883, Land Application Permit Rogerson WWT Facility 450 Knobbs Creek Drive PO Box 347 Elizabeth City, NC 27907-0347 Stephen Carver: ORC Mourice Brothers Interim Waste Treatment Plant Manager Telephone: 252-337 -681 * 252-337 -6626
Treatment Process Performance (Effluent:) NOTE: Operating under NPDES Permit NC002501I received I February 2003 JANUARY FLOW 2.t65 MGD 4.5 MCD CBOD 6.1me/L 25 ms/l AMMONIA NITROGEN 14.44 ms/l 8.0 md - TOTAL SUSPENDED RESIDUE 5.738 ms/l 30 mp/l FECAL COLIFORM 4/100 ml 200/100 ml TOTAL RESIDUAL CHLORINE 0 us./l 28.0 ue/l Ph 6.9(MrN)-7.9(MAX) NOT <6.8 NOR > 8.5 DO 8.68 me/l NOT< 5.0 me/l Receive Notice Of Violation and was non-compliant for effluent ammonia. Detention time was shortening due to #2 clarifier, #4 Aeration basin, and #5 out of service for repairs. FEBRUARY FLOW 2.645 MGD 4.5 MGD CBOD 3.4 mgll 25 n're./l AMMONIA NITROGEN 7.95 ms/l 8.0 me/l TOTAL SUSPENDED RESIDUE 5.8l me/l 30 ms/l FECAL COLIFORM 3/100 ml 200/100 ml TOTAL RESIDUAL CHLORINE 0 ue/l 28.0 us/l Ph 6.9(MrN)-7.s(MAX) NOT <6.8 NOR>8.5 DO 9.97 ms./l NOT<5.0 me/l MARCH PARAMETER AYERAGE PERMIT LIMITS FLOW 2.91tMGD 4.5 MGD CBOD 3.4 me/l 25 mc.ll AMMONIA NITROGEN 1.67 me/l 8.0 me/l TOTAL SUSPENDED RESIDUE 5.745 me/l 30 mer'l FECAL COLIFORM 4/100 ml 200/100 ml TOTAL RESIDUAL CHLORINE 0 us./l 28.0 usll Ph 7. r(mrn)-7.s(max) NOT<6.8 NOR > 8.5 DO 9.50 mp/l NOT<5.0 ms/l Effluent toxicity collected l0 March (PASS) APRIL FLOW 3.365 MGD 4.5 MGD CBOD 3.5 ms/l 12 ms./l AMMONIA NITROGEN 5.1I ms/l 4.0 ms./l TOTAL SUSPENDED RESIDUE 5.14 ms/l 30 ms/l FECAL COLIFORM 2/100 ml 200/100 ml TOTAL RESIDUAL CHLORINE 0 us/l 28.0 us./l Ph 7.0(MrN)-7.6(MAX) NOT<6.8 NOR > 8.5 DO 9.07 ms.ll NOT< 5.0 ms/l Receive Notice Of Violation and was non-compliant for effluent ammonia.
MAY FLOW 2.835 MGD 4.5 MGD CBOD 3.8 me/l l.2ms/l AMMONIA NITROGEN.25 me/l 4.0ms/L TOTAL SUSPENDED RESTDUE 9.13 ms/l 30 ms./l FECAL COLIFORM l3l100 ml 200/100 ml TOTAL RESIDUAL CHLORINE 0 ue/l 28.0 usll Ph 6.8(MrN-7.3(MAX) NOT<6.8 NOR > 8.5 DO 7.88 me/l NOT < 5.0 ms/l JUNE FLOW 2.338MGD 4.5 MGD CBOD 5.0 mp/l 12 ms./l AMMONIA MTROGEN.36 me/l 4.0 ms./l TOTAL SUSPENDED RESIDUE 8.64 me/l 30 ms/l FECAL COLIFORM l31100 ml 200/100 ml TOTAL RESIDUAL CHLORINE 0 ue/l 28.0 uer'l Ph 7(MIN)-7.5(MAX) NOT<6.8 NOR > 8.5 DO 8.35 mp/l NOT< 5.0 mell- Eflluent toxicity collected 16 June - (PASS) JULY FLOW 2.676IMGD 4.5 MGD CBOD 3.Sme/L 12 ms./l AMMONIA NITROGEN.45ms./L 4 mqll TOTAL SUSPENDED RESIDUE 8.8 ms/l 30 me/l FECAL COLIFORM 23 me/l 200/100 ml TOTAL RESIDUAL CHLORINE 0 uell 28.0 ue/l Ph 7.3(MrN)-7.6(MAX) NOT<6.8 NOR > 8.5 DO 8.16 ms/l NOT <5.0 ms/l AUGUST FLOW 2.446MGD 4.5 MGD CBOD 3.4 me/l 12 me/l AMMONIA NITROGEN.18 ms/l 4melL TOTAL SUSPENDED RESIDUE 6.84 ms./l 3O ms./l FECAL COLIFORM 25l100 ml 200/100 ml TOTAL RESIDUAL CHLORINE 0 udl- 28.0 ue/i- Ph 7.3(MIN-7.8MAX) NOT<6.8 NOR > 8.5 DO 7.60 me/l NOT<5.O me/l
SEPTEMBER FLOW 2.882 MGD 4.5 MGD CBOD 3.4ms./L 12 ms./l AMMONIA NITROGEN.14 mejl 4 me/l TOTAL SUSPENDED RESIDUE 6.27 ms./l 30 mell FECAL COLIFORM 3ll100 ml 200/100 ml TOTAL RESIDUAL CHLORINE 0 ue/l 28.0 us/l Ph 7(MIN-7.7(MAX) NOT<6.8 NOR > 8.5 DO 7.73 me/l NOT< 5.0 ms/l Ellluent toxicity collected l8 September - (PASS) NOTE: Operating under NPDES Permit NC 0025011 received 12 October 2008 OCTOBER FLOW 2.440MGD 4.5 MGD CBOD 3.3 ms./l 12me/L AMMONIA NITROGEN.15 me/l 4 mejl TOTAL SUSPENDED RESIDUE 6.78 ms./l 30 ms/l ENTEROCOCCI 471100 ml 35/100 mv month TOTAL RESIDUAL CHLORINE 0 ue/l 50.0 ue/l (Compliance) Ph 6.8(MrM-7.s(MAX) NOT<6.8 NOR > 8.5 DO 9.58 ms/l NOT <5.0 mp/l Non-Compliant - due to increase of monthly average (Enterococci). NOVEMBER FLOW 2.594 MGD 4.5 MGD CBOD 2.6 mp/l 25 msjl AMMONIA NITROGEN.09 ms/l 8.0 me/l TOTAL SUSPENDED RESIDUE 7.69 ms/l 30 ms./l ENTEROCOCCI 2lll00ml 35/100 mvmonth TOTAL RESIDUAL CHLORINE 0 up/l 50.0 ue/l (Comoliance) Ph 7.2(MrN)-7.8(MAX) NOT<6.8 NOR >8.5 DO 9.60 mell NOT<5.0 me/l DECEMBER FLOW 2.672IN.{GD 4.5 MGD CBOD 3.1msJL 25 mp/l AMMONIA NITROGEN.l2me/L 8.0 me/l TOTAL SUSPENDED RESIDUE 6.7 ms.l 30 ms/l ENTEROCOCCI l3ll00ml 35/100 mv month TOTAL RESIDUAL CHLORINE 0 ue/l 50.0 ue/l (Compliance) Ph 7.1(MrN)-7.s(MAX) NOT<6.8 NOR>8.5 DO 10.8 me/l NOT<5.0 mp/l Effluent toxicity collected l7 Dec. - (PASS)
1. Notification The 2008 Annual Report was rnade available to our customers on l0 February 2009.The following methods were used. o Reports available at following locations: City Hall (City Manager's Offrce and Customer Service) Fleet Maintenance Complex (Pritchard Street) Rogerson Wastewater Treatrnent Facility 2. Certification I certifu under penalty of law that this report is complete and accurate to the best of my knowledge. I further certiry that this report has been made available to the customers of the City of ElizabethCity and that those customers have been notified of its availabilitv. PaaIA.Mefre,PE Paul A. Fredette Utilities Director City of Elizabeth City IOFeb*u.*2N9 Date