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HomeMy WebLinkAboutNC0031836_Monitoring Information_20180912 CITY of 4:07 eitat e NORTH CAROLINA September 12, 2018 Mr. Monti Hassan PERCS Unit 1617 Mail Service Center Raleigh,NC 27699-1617 Dear Mr. Hassan: I am writing in regards for approval on the City of Statesville Long Term Monitoring Plan. I have made changes to the Arsenic detection level for both Third and Fourth Creek plants. This affects both 4th Creek WWTP and 3rd Creek WWTP and SIUs. I have included a copy of the updated LTMP. If you have any questions,please contact me at 704-878-3438 or bjohnson@statesvillenc.net Sincerely, Brandy Johnson, Pretreatmen oordinator Water Resources PO Box 1111 • Statesville,NC 28687 • ci.statesville.nc.us _ Y eT e, y= i&:.:n7.,Z7 ,',,.- - - _:b,_ ,,t,'''g` _,1.- .s:oma,:�- u x-,4 _ — _ -77r,67,7.7. 7r,6h?-.,.. --:r+«F?"',,1`ii::i 7r--, nt--��:: _ ,�.w:'-:s, :-_. - _ .x-.�. biz;.;::.. _ _x '-',4`.'ixt=+w',1*" --4. ,e:e 7`,.," .,iC%,,:.a.._si3*4 -.3 .. 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Influent-Regular composite sample taken prior to mixing with side streams; as collected for NPDES monitoring. 2. Effluent-Regular composite sample after dechlorination, as collected for NPDES monitoring 3. Aeration Basins- Collect a grab sample as collected for process control. Fourth Creek-a grab sample from both aeration basin#1 and#2. Third Creek-a grab sample from the oxidation ditch#1. 4. Sludge to Disposal- Sampling as per Sta-Lime and Land Application Permits. Fourth Creek and Third Creek have a digester sampling point at the aerator located between the sludge pump station and the sludge pumps. Percent Solids and Sour Tests are conducted from this sample. The sampling point for Sta-lime is located at Fourth Creek's Sta-lime Sludge Treatment Facilities. Third Creek hauls the sludge to Fourth Creek. Cake Sludge is sampled at the Sludge Press for Synagro. 5. SIU(s)- Sampling locations as per Industrial User Permit(s) (IVPs). 6. Uncontrollable—Collect a grab sample at designated sampling site. B. Pollutants of Concern (POCs) Reason for Inclusion: NPDES -4th Creek and 3rd Creek POTW NPDES Permit limit Sludge-40 CFR 503 Sludge Land Application EPA-EPA Required SIU—Significant Industrial User POC 4th Creek 3rd Creek 4th&3rd Creek EPA,NC 4th Creek 3rd Creek List NPDES NPDES Sludge Required SIU SIU Required Required Required Pollutants Limited Limited Pollutants Pollutants Pollutants Pollutants Pollutants Flow Flow Flow Flow Flow BOD5 BOD5 BOD5 BOD5 BOD5 TSS TSS TSS TSS TSS NH3 as N NH3 NH3 NH3 NH3 As As As As Cd Cd Cd Cd Cd Cr Cr Cr Cr Cu Cu Cu Cu Cu Cu CN CN CN Pb Pb Pb Pb Pb Hg Hg Hg Hg Hg Hg Mo Mo Mo Mo Ni Ni Ni - Ni Ni Ag Ag Ag Ag Se Se Se Se Zn Zn Zn Zn Zn Zn TP TP TP TN TN TN Bis(2ethylhexyl)phthalate Bis(2ethylhexyl) phthalate COD COD COD Oil&Grease Oil&Grease Oil&Grease % Solids % Solids Sludge to disposal flow Sludge to disposal flow 1 CITY OF STATESVILLE LONG TERM MONITORING PLAN C. Flow Flow monitoring points are indicated on the attached facility diagram. Influent and effluent flows will be monitored during sampling events. Flow or volume of sludge to disposal (Pt. 4) can either be monitored or calculated. Flow used for Headworks is the effluent flow. D. SIU Monitoring Significant Industrial User monitoring will be conducted per industrial user permit(IUP). E. Sampling Frequency Sampling Point Monitoring Frequency 1-Influent 1 sample per quarter 2 -Effluent 1 sample per quarter 3 —Aeration Twice per year 4 - Sludge to Disposal Per Sludge Permits and 503 regulations 5 - SIU Per SIU Permit 6 -Uncontrollable* Twice per year * Collection of one grab sample at an uncontrollable location in the collection system,not containing SIU wastewater. F. Sampling Plan-Fourth Creek and Third Creek WWTP Fourth Creek WWTP Pollutant Influent Effluent Aeration Sludge SIU(s) Uncontrollable (Pt.1) (Pt.2) (Pt.3) (Pt.4) (Pt.5) (Pt.6) BODS X X X X TSS X X X X NH3 as N X X X X X COD X X X X Total Nitrogen X X Total Phosphorus X X As X X X X • X Cd X X X X X X Cr X X X X X Cu X X X X X X CN X X X X X Pb X X X X X X *Hg X X X X • X Mo X X X X • X Ni X X X X X X Se X X X X • X Ag X X X X X Zn X X X X X X Oil&Grease X Flow/Volume X X X %Solids X *Low Level Mercury(Method 1631) is being used for Effluent for both Fourth Creek and Third Creek WWTP. Method 245.1 is being used for Influent for both Fourth Creek and Third Creek WWTP. 2 CITY OF STATESVILLE LONG TERM MONITORING PLAN ■ SIU's will be monitored once a year for Arsenic,Mercury, Molybdenum and Selenium by Fourth Creek and Third Creek WWTP. F. Sampling Plan- Fourth Creek and Third Creek WWTP Third Creek WWTP Pollutant Influent Effluent Aeration Sludge SIU(s) Uncontrollable (Pt. 1) (Pt. 2) (Pt.3) (Pt. 4) (Pt. 5) (Pt. 6) BOD5 X X X X TSS X X X X NH3 as N X X X X X COD X X X X Total Nitrogen X X Total Phosphorus X X As X X X X ■ X Cd X X X X X X Cr X X X X X Cu X X X X X X CN X X X X X Pb X X X X X X *Hg X X X X ■ X Mo X X X X s X Ni X X X X X X Se X X X X • X Ag X X X X X Zn X X X X X X Bis(2ethylhexyl)phthalate X Oil&Grease X Flow/Volume X X X X %Solids X * Low Level Mercury(Method 1631)is being used for Effluent for both Fourth Creek and Third Creek WWTP. Method 245.1 is being used for Influent for both Fourth Creek and Third Creek WWTP. • SIU's will be monitored once a year(July)for Arsenic,Mercury, Molybdenum and Selenium by Fourth Creek and Third Creek WWTP. 3 CITY OF STATESVILLE LONG TERM MONITORING PLAN G. Detection Level and Sample Method Pollutant Of Concern Detection Level(mg/1) * Sample Method BOD 2.0 24 hr Composite TSS 2.5 24 hr Composite NH3 as N 0.1 24 hr Composite COD 20.0 24 hr Composite Total Nitrogen , 0.2 24 hr Composite Total Phosphorus 0.16 24 hr Composite As 0.0025 24 hr Composite Cd 0.0004 24 hr Composite Cr 0.002 24 hr Composite Cu 0.002 24 hr Composite CN 0.005 Grab Pb 0.003 24 hr Composite Hg-Effluent 0.000001 (Method 1631) Grab Hg-All other locations 0.0002 (Method 245.1) 24 hr Composite Mo 0.005 24 hr Composite Ni 0.002 24 hr Composite Se 0.005 24 hr Composite Ag 0.0005 24 hr Composite Zn 0.01 24 hr Composite Oil& Grease 5.0 Grab Bis(2ethylhexyl)phthalate 0.01 Composite • All aeration,uncontrollable and Sludge to Disposal samples will be grabs. ■ Sampling,preservation, and analytical method must be from 40 CFR 136. • Analyses for samples other than for Long Term Monitoring may be conducted at detection levels differing from the above. H. Facility Diagram - Fourth Creek and Third Creek WWTP Attached are the facility diagrams for Fourth Creek WWTP and Third Creek WWTP. The following locations are shown as numbered: Point 1: Influent. Point 2: Effluent Point 3: Aeration Point 4: Sludge (Flow is measured at sludge pumps; metals and% solids is analyzed on fmal product) Point 5: Digester Point 6: Sta-Lime (Third Creek hauls sludge cake to 4th Creek WWTP) Locations not shown are: Point 7: Significant Industrial User(s) Point 8: Uncontrollable 4 CITY OF STATESVILLE LONG TERM MONITORING PLAN • SIU sampling location is as shown in the Industrial User Permit. Uncontrollable sampling sites are listed below: The Uncontrollable sampling sites include some residential areas. 1. Brookdale Drive—In front of Iredell Memorial Hospital, manhole number 4B 199. 2. Jefferson Street—Manhole 50 yards north, back of Armstrong Wood Products building. 3. Dragon Golden—Manhole 40 feet east, back of Dragon Golden building located at the Newtown Shopping Center. 4. Troutman—Designated sampling point for Troutman discharge located at the Third Creek WWTP. it 5. Glenway Drive—Manhole 50 feet north, back of Toreros 8 Restaurant located at the Crossroads Shopping Center. 5 CITY OF STATESVILLE' S LONG TERM MONITORING PLAN FOR THIRD CREEK WWTP ( NC0020591) AND FOURTH CREEK WWTP ( NC0031836) Sludge Water ..-0'''', PLANT INFLUENT COVERED DECHLORINATION METERING EFFLUENT STALIME SLUDGE q,lv�lnfluent Sampling Point 1 BUILDING FLUME SLUDGE STORAGE TREATMENT BAR SCREENS 7 I.- FACILITIES _ Sta-Lime Sampling Point 6 -- CHLORINE LIME 0. —�L BASIN Effluent Sampling i ! SLUDGE Decant Water CONVEYOR STORAGE INFLUENT Point 2 PAD PUMP STATION J RAS ..--- I P H PRESS Cake Sludge Sampling Point 4 CLARIFIERS I1 :1 RAS / WET WELL n UMPE FLOW SPLITTER SLUDGE STa BOX 4 PUMPS I —'� — WAS l"1 \ (...- I � I 1 ❑ ❑ I ❑ ❑ 1 ��BIC SuperNat AERATION AERATION SLUDGE BASIN a BASIN DIGESTER ❑ ❑ ❑ ❑ ❑ Digester Sampling Point 5 NO.1 NO.2 AERATORS ❑ ❑ ❑ ❑ - ❑ AERATORS AERATORS 4 w L _ J *FLOW #1 Aeration&#2 Aeration are DISTRIBUTION collected as a grab sample. 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