NC0026051_Headworks Analysis_20180309

DURHAM
COUNTY Engineering and
LO Environmental Services REcEIVEDrDENR/DWR
Utilities Division
MAR 16 2018
March 9,2018 Water Resources
Permitting Section
RETURN RECEIPT REQUESTED
CERTIFIED MAIL#7017 1000 0000 1902 0941
Ms. Vivien Zhong
DWQ/PERCS Unit
1617 Mail Service Center
Raleigh,NC 27699-1617
Re: 2018 Headworks Analysis
Dear Ms. Zhong:
Please find enclosed Durham County's Headworks Analysis (HWA) and supporting
documentation. Enclosed are the rationale, headworks analysis, allocation table,
uncontrollable mass balance worksheet, HASL worksheet, removal rate calculations and
summary page, SIU data summary, and LTMP data spreadsheets. If you have any
questions concerning the HWA please contact me at(919) 560-9034.
Sincerely,
b\-640t
Stephanie A. Brixey
Deputy Director of E&ES /POTW Director
5926 NC Highway 55 East,Durham,North Carolina 27713
[phone] I Fax[phone] I dconc gov
Equal Employment/Affirmative Action Employer

Durham County Triangle WWTP
NPDES Permit No. NC0026051
RATIONALE FOR HEADWORKS ANALYSIS CRITERIA
Headwork's Analysis dated March 2018
POTW Flow: Effluent flow data was used to calculate both the influent and
effluent pollutant poundage for the removal rate calculations. The
flow was based on the average flow from the LTMP sampling
events between November 2012 — February 2018.
Non SIU Flow Based on the POTW average influent flow for 2017 (5.91 MGD)
minus total SIU Flow (0.596 MGD) to determine the uncontrollable
flow(5.31 MGD).
Removal Rates Per State guidance, actual Removal Rates were used when the
supporting data was more than 50% detected concentrations. For
pollutants where 50% of the data was reported as less than
detected, literature-based removal rates were used.
BOD, TSS, Ammonia, Total Nitrogen, and Total Phosphorus are all
based on design. A design increase for total phosphorus was
approved April 26, 2010 so this poundage was included in the
HWA. The approval letter is attached.
Inhibition Values All inhibition values are based on literature values.
Sludge Criteria The Headworks Addendum for Sludge Loadings (HASL) Worksheet
was completed. The sludge is dewatered and hauled to a
contractor for compositing and disposal. The County will not apply
for a sludge permit. The HASL was calculated based on the
current influent loading to the treatment plant and assuming the
dewatered sludge will achieve 18% solids.
Uncontrollable Based on a mass balance of the influent loading and the SIU's
loadings to the WWTP.
SIU Data Concentrations used are the 2017 averages.
LTMP Data Data from November 2012 — February 2018 was used to complete
the analysis so there would be a total of 12 sampling events.
Durham County is approved to conduct LTMP monitoring semi-
annually. Molybdenum sampling data from 11/6/2012 and 8/6/2013
was omitted based on anomaly results that did not seem consistent
with all other data.

TVVVVTP Allocation Table Printed 3/8/2018, 4 12 PM
Allocation Table Page 1 of 5
Headworks last approved 06/05/13
Allocation Table updated 01/26/18
Permits last modified 01/24/18
Poiw=> Triangle WWTP
NPDES#=> NC0026051
FLOW
Industry Type Renewal Modification Date Permit Limits
IUP INDUSTRY NAMES Permit Pipe of Effective Effective Permit
Count (please hst alphabeticly) number number Industry Date Date Expires MGD gal/day
1 AstraZeneca Pharmaceuticals DC-078 001 439 D&E Pharmaceutical 01/01/17 01/31/18 12/31/21 0 0020 2,000
2 Aurobmdo USA DC-089 001 439 D&E Pharmaceutical 10/09/17 10/08/19 0.0390 39,000
3 Biogen DC-080 001 439 D&E Pharmaceutical-no CN 08/24/15 10/01/16 08/23/20 0 2500 250,000
4 Braebum Pharmaceuticals DC-090 001 439 D&E Pharmaceuticals 01/01/18 12/31/20 0.0100 10,000
5 Cmtas DC-037 001 Full Service Laundry Facility 11/05/17 11/01/22 0 1200 120,000
6 Cree(008,009) DC-076 469 Semi Conductor Mfg 08/01/14 12/20/17 07/31/19 0 4510 451,000
Cree 008 008 (Combined Discharge) monitor
Cree 009 009 (Combined Discharge) monitor
7 Cree RTP DC-040 012 469 Semi Conductor Mfg 10/01/16 07/07/17 07/31/19 0 3290 329,000
8 JMC(USA)Inc DC-023 001 433 Cr Metal Production 07/02/17 07/01/22 0 0100 10,000
9 Micross Advanced DC-085 001 469 E R&D Semiconductor 10/21/16 10/20/19 0 0750 75,000
10 Novan,Inc DC-084 001 439 E R&D Pharmaceutical 09/14/16 09/13/18 0 0200 20,000
11 Phonomc DC-075 001 469 A Semi Conductor Mfg. 03/07/16 10/27/17 03/06/18 0 0200 20,000
12 PowerSecure DC-095 001 433 Metal Finisher 11/13/17 11/12/19 0.0060 6,000
13 SCM Metals DC-005 001 471 104A Powder Former 07/01/16 06/30/21 0 0500 50,000
14 United Therapeutics DC-053 001 (Combined Discharge) 05/25/15 05/25/17 05/24/20 0 0500 50,000
002 Pharmaceutical
Column Totals=> 1 43201 1,432,000
Basis=> NPDES
MAHL from HWA(lbs/day)=> NPDES Permitted Flow=> 12 0000
Uncontrollable Loadmg(lbs/day)=> 5 3100
Total Allowable for Industry(MAIL) (lbs/day)=> 6 6900
Total Permitted to Industry(lbs/day)=> 1 4320
MAIL left(lbs/day)_> 5 2580
Percent Allow.hid (MAIL)still available(%)=> 78 6%
Percent MAHL still available(%)=> 43.8%
5 Percent MAHL(lbs/day)=> 0 6000

TVVVVTP Allocation Table Printed 3/8/2018, 4 12 PM
Allocation Table Page 2 of 5
Headworks last approved 06/05/13
Allocation Table updated 01/26/18
Permits last modified 01/24/18
POTW=> Triangle WWTP
NPDES#=> NC0026051
SOD TSS Ammonia Arsenic Cadmium
Industry Permit Limits Permit Limits Permit Limits Permit Limits Permit Limits
IUP INDUSTRY NAMES Permit Pipe Conc Load Conc Load Conc Load Conc Load Conc. Load
Count (please listalphabeticly) number number mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day
1 AstraZeneca Pharmaceuticals DC-078 001
2 Aurobmdo USA DC-089 001 momtor momtor monitor monitor
3 Biogen DC-080 001 momtor momtor momtor momtor
4 Braebum Pharmaceuticals DC-090 001 momtor
5 Cmtas DC-037 001 monitor momtormonitor momtor
ii
6 Cree(008,009) DC-076I
_
Cree 008 008 monitor momtor
Cree 009 009
i
7 Cree RTP DC-040 012 monitor momtor momtor
ii
8 JMC(USA)Inc DC-023 001 _monitor 0.0250 0.0021
-~
9 Micross Advanced DC-085 001 monitor momtor
10 Novan,Inc DC-084 001 momtor
11 Phonomc DC-075 001
12 PowerSecure DC-095 001 0 0700 0 0035
13 SCM Metals DC-005 001 momtor
14 United Therapeutics DC-053 001 momtor momtor monitor momtor
002
Column Totals=> 1 I 01 0 0 I 0.00001 0.00561 I
Stream Stream
Basis=> Design Design Design Std Std
MAHL from HWA(lbs/day)=> 20016 25020 2502 00 0.8962 0 2987
Uncontrollable Loading(lbs/day)=> 8281 9964 1306 42 0 1329 0.0133
Total Allowable for Industry(MAIL)(lbs/day)=> 11735 15056 1195 58 0 7633 0 2854
Total Permitted to Industry(lbs/day)=> 0 _ 0 0.00 0 0000 0 0056
MAIL left(lbs/day)=> 11735 15056 1195 58 0 7633 0 2799_
Percent Allow.Ind. (MAIL)still available(%)=> 100 0% 100 0% 100.0% 100 0% 98.0°Ao
Percent MAHL still available(%)=> 58 6% 60 2% 47 8% 85 2% 93 7%
5 Percent MAHL(lbs/day)=> 1001 1251 125 10 0 0448 0 0149

TVVVVTP Allocation Table Printed 3/8/2018, 4 12 PM
Allocation Table Page 3 of 5
Headworks last approved 06/05/13
Allocation Table updated 01/26/18
Permits last modified 01/24/18
POTw=> Triangle WWTP
NPDES#=> NC0026051
Chromium Copper Cyanide Lead Mercury
Industry Permit Limits Permit Limits Permit Limits Permit Limits Permit Limits
IUP INDUSTRY NAMES Permit Pipe Conc Load Cone Load Conc Load Conc. Load Conc Load
Count (please list alphabettcly) number number mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day
1 AstraZeneca Pharmaceuticals DC-078 001 1 I 0 000142 0.000002
2 Aurobmdo USA DC-089 001 .. ii iimomtor i ... 0 000142 0.000046
3 Biogen DC-080 001 0 000142 0.000296
4 Braeburn Pharmaceuticals DC-090 001 0.000142 0 000012
ii iw,
5 Cmtas DC-037 001 momtor momtor momtor 0.000142 0 000142
6 Cree(008,009) DC-076 0 000142 0 000534
Cree 008 008 momtor1........ momtor iimomtor momtor momtor
Cree 009 009 momtor..... ' momtor
7 Cree RTP DC-040 012 momtor momtor 0 0500 monito 0.000142 0.000390
8 JMC(USA)Inc DC-023 001 0.6500 0 0542 0 7000 0 0584 0.0300 0 0025 0 1600 0 0133 0 000142 0.000012
9 Micross Advanced DC-085 001 momtor monitor monito 0.000142 0.000089
10 Novan,Inc DC-084 001 momtor 0.000142 0 000024
11 Phonomc DC-075 001 0.000142 0 000024
12 PowerSecure DC-095 001 1 7100 0 0856 2.0700 0 1036 0 5000 0 0250 0 4300 0 0215 0 000142 0 000007
13 SCM Metals DC-005 001 0 5000 0 2085 0 0300 0 0125 0 1000 0.0417 0.000142 0 000059
14 United Therapeutics DC-053 001momtor 0.000142 0 000059
002 o i ii i ...
Column Totals=> I 0 13981 I 0.37051 0.09001 R 0 07661 1 0.001696
Stream AS/Nit/TF Stream Stream
Basis=> Std inhibition Std Std NPDES
MARL from HWA(lbs/day)=> 4.8465 23 6589 0.7950 3 1596 0.029137
Uncontrollable Loading(lbs/day)=> 0 1771 1 9308 0 0221 0.1949 0.003543
Total Allowable for Industry(MAIL)(lbs/day)_> 4 6694 21 7281 0 7728 2.9647 0.025594
Total Permitted to Industry(lbs/day)=> 0 1398 0 3705 0 0900 0.0766 0.001696
MAIL left(lbs/day)_> 4.5296 21 3576 0 6828 2.8882 0.023898
Percent Allow.Ind (MAIL)still available(%)=> 97 0% 98 3 % 88 4% 97 4% 93 4%
Percent MAHL still available(%)=> 93 5% 90 3 % 85 9% 91.4% 82 0%
5 Percent MAHL(lbs/day)=> 0.2423 1 1829 0.0397 0 1580 0.001457

TWVVTP Allocation Table Printed 3/8/2018, 4 12 PM
Allocation Table Page 4 of 5
Headworks last approved 06/05/13
Allocation Table updated 01/26/18
Permits last modified 01/24/18
POTw=> Triangle WWTP
NPDES#=> NC0026051
Molybdenum Nickel Selenium Silver Zinc
Industry Permit Limits Permit Limits Permit Limits Permit Limits Permit Limits
IUP INDUSTRY NAMES Permit Pipe Conc Load Conc. Load Conc. Load Conc Load Conc. Load
Count (please list alphabeticly) number number mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day
1 AstraZeneca Pharmaceuticals DC-078 001 _
2 Aurobmdo USA DC-089 001 monitor monitor
ii ii
3 Biogen DC-080 001 monitor monitor
4 Braebum Pharmaceuticals DC-090 001 monitor
5 Cmtas DC-037 001 monitor monitor monitor monitor
ii iI
6 Cree(008,009) DC-076
ii
Cree 008 008 0 4570 monitor monitor monitor momtor
Cree 009 009 monitor
, - - I - - ..---
7
7 Cree RTP DC-040 012 monitor monitor monitor monitor momtor
i
8 JMC(USA)Inc DC-023 001 monitor 0.2000 0.0167 0 0900 0 0075 0 5600 0.0467
9 Micross Advanced DC-085 001 monitor monitor monitor monitor
I
10 Novan,Inc DC-084 001 monitor momtor monitor
11 Phonomc DC-075 001 monitor_ 0.0200 ii12 PowerSecure DC-095 001 monitor ii0.0500 ii 0.0500 2400 0 0120 1 4800 0 0741
13 SCM Metals DC-005 001 monitor monitor monitor monitor
14 United Therapeutics DC-053 001 monitor monitor
ii
002
Column Totals=> 0 4570 I 0 0867 0 00001 I 0.01951 0.1208
Sludge
Sludge Stream Ceiling AS/Nit/TF AS/Nit/TF
Basis=> Ceiling HASL Std HASL inhibition inhibition
MAHL from HWA(lbs/day)=> 22.9553 2.4843 0.4219 12 3224 49 2894
Uncontrollable Loading(lbs/day)=> 0 3366 0 3321 0 0930 0 0443 18.1304
Total Allowable for Industry(MAIL) (lbs/day)=> 22 6188 2 1522 0.3289 12.2781 31.1590
Total Permitted to Industry(lbs/day)=> 0.4570 0 0867 0 0000 0 0195 0 1208
MAIL left(lbs/day)=> 22 1618 2 0655 0 3289 12 2585 31.0382
Percent Allow.Ind. (MAIL)still available(%)=> 98 0% 96 0% 100 0% 99 8% 99 6%
Percent MAHL still available(%)=> 96 5% 83 1 % 78 0% 99 5% 63 0%
5 Percent MAHL(lbs/day)=> 1.1478 0 1242 0.0211 0.6161, 2 4645

TWVVTP Allocation Table Printed 3/8/2018, 4 12 PM
Allocation Table Page 5 of 5
Headworks last approved 06/05/13
Allocation Table updated 01/26/18
Permits last modified 01/24/18
Porw=> Triangle WWTP
NPDES#=> NC0026051
Total Nitrogen Total Phos. Chloride Fluoride
Industry Permit Limits Permit Limits Permit Limits Permit Limits
IUP INDUSTRY NAMES Permit Pipe Conc Load Conc Load Conc Load Cone Load
Count (please list alphabeticly) number number mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day
1 AstraZeneca Pharmaceuticals DC-078 001
ii
2 Aurobmdo USA DC-089 001 monitor monitor monito monitor
3 Biogen DC-080 001 monitor monitor1 , monito monitor
4 Braeburn Pharmaceuticals DC-090 001 _
5 Cintas DC-037 001 monitor monitormonito monitor
_
6 Cree(008,009) DC-076 7 0000 26 3294
Cree 008 008 monitor monitor monitor momtor
Cree 009 009 monitor monitor
7 Cree RTP DC-040 012 monitor monitor monitor 7.0000 19 2070
8 JMC(USA)Inc DC-023 001 monitor monitor monitor monitor
9 Micross Advanced DC-085 001 monitor monitorii. monitor 6 0000 3 7530
10 Novan,Inc DC-084 001 monitor
11 Phonomc DC-075 001 _
12 PowerSecure DC-095 001 _
13 SCM Metals DC-005 001 monitor monitor......... monitor monitor
14 United Therapeutics DC-053 001 monitor monitor monitor monitor
002
Column Totals=> 0 001 0 001 0 0000 I 49 2894
Basis=> Design Design Stream Std NPDES
MAHL from HWA(lbs/day)=> 4003 2000 650 00 15755 4661 103 2359
Uncontrollable Loading(lbs/day)=> 1988.6492 238.92 3844 2251 31.7881
Total Allowable for Industry(MAIL)(lbs/day)=> 2014 55 411.08 11911 2409 71.4478
Total Permitted to Industry(lbs/day)=> 0 00 0 00 0.0000 49 2894
MAIL left(lbs/day)=> 2014 55 411.08 11911 2409 22 1584
Percent Allow Ind (MAIL)still available(%)=> 100 0% 100 0% 100.0% 31.0%
Percent MARL still available(%)=> 50.3 % 63 2% 75 6% 21 5 %
5 Percent MAHL(lbs/day)=> 200 16 32.5000 787 7733 5.1618,

TWWTP HWAPage 1 of 5
Printed 3/8/2018,413 PM
A I B I
C I D I E I F I G I H I I I J K
1 Headworks Analysis Spreadsheet Spreadsheet Instructions
2 POTW Name Tnangle WWTP 1) Applicable Values should be entered in the Heavy Bordered Blue cells The rest of worksheet is
3 Date 3/7/2018 protected,password is"T
4 POTW NPDES#=>\ NC0026051 2) Additional pollutants can be added in cells A34 to A42 Note all Pollutant names are linked from
5 POTW Sludge Permit#_> NA here to other pages in HWA worksheet and also to AT worksheet(i e,automatically entered into
—0— other pages in HWA worksheet and also AT worksheet from HWA worksheet)
7 POTW NPDES Permitted Flow(MGD)= 12 <=used in AT only 3) Formulas are discussed in the Comprehensive Guidance HWA Chapter
8 POTW Average Flow(MGD)=.. 5 91 <tised in HWA calculations 4) HWA,AT and HASL worksheets are linked MAHLs,Basis,and Uncontrollable load are
automatically entered into AT from this worksheet
9 Uncontrollable Flow(MGD)= 5 31 5)If red tab notes are not visible,they can be turned on in the"Tools"menu under"options",in the
10 7Q10 Stream Flow(MGD)= 0 "view"tab click the"comment indicator only"button
11 Stream Classification= WS-IV NSW
13 Class of Sludge generated(A,or B) C .
14 Sludge to Digestor Flow(MGD)= Through calc for different POTW use Design
g
15 Sludge to Disposal Flow(MGD)= flows Cntena
16 %Solids to Disposal= 18 Design Values Average Flow Permitted Flow Loadm
17 Sludge Site Area(acres)= WWTF Influent BOD(mg/I) 200 520 8 256 5 X
18 Sludge Site Life(yrs)= WWTF Influent TSS(mg/1) 250 4545 5 2238 6 X
19 Age of Sludge Site(yrs)= WWTF Influent NH3(mg,/1) 25 277 8 136 8 X
20 WWTF Influent Total N(mg/1) 40 33 3 16 4 X
21 Pass-Through Loading Calculations WWTF Influent Total P(mg/I) 5 6 6 3.2 X
0"CMJ1 .1.1111M11.1
Stream Standard Pass-Thru Mmimum
NPDES LIMIT Plant Removal Removal rate NPDES Loadmg Standard Stream Loading Design Cntena Loading Pass-Thru
23 Pollutant (mg/I) Rate(%) Source (lbs/day) (mg/I) Standard Source (lbs/day) Loadmg(lbs/day) (lbs/day) Basis
24 BOD 5 99 04 Site Specific 25,672 20,016 20,016 Design
25 TSS 30 99 34 Site Specific 224,043 25,020 25,020 Design
26 Ammonia 1 99 64 Site Specific 13,691 2,502 2,502 Design
27 Arsenic 45 Literature 0 01 Water Supply 0 8962 0 8962 Stream Std
28 Cadmium 67 Literature 0 002 Water Supply 0 2987 0 2987 Stream Std
29 Chromium 49 15 Site Specific 0 05 Water Supply 4 8465 4 8465 Stream Std
30 Copper 94 31 Site Specific Action Level
31 Cyanide 69 Literature 0 005 Water Supply 0 7950 0 7950 Stream Std
32 Lead 61 Literature 0 025 Water Supply 3 1596 3 1596 Stream Std
33 Mercury 0 000012 97 97 Site Specific 0 02914 0 000012 Water Supply 0 02914 0 02914 NPDES
34 Molybdenum 22 82 Site Specific
35 Nickel 50 4 Site Specific 0 025 Water Supply 2 4843 2 4843 Stream Std
36 Selenium 50 Literature 0 005 Water Supply 0 4929 0 4929 Stream Std
37 Silver 75 Literature Action Level
38 Zinc 79 81 Site Specific Action Level
39 Total Nitrogen 3 04 90 88 Site Specific 1642 9800 4003 2 4003 200 Design
40 Total Phos 0 23 96 5 Site Specific 323 9018 650 650 000 Design
41 Chloride 21 79 Site Specific 250 Water Supply 15755 4661 15755 4661 Stream Std
42 Fluonde 1 8 14 06 Site Specific 103 2359 103 2359 NPDES
43 e
44 f
45 g
46 h
47 I
Modeled after Chapter 5-HWA Guidance,Appendix 5-A
Revision Date February 2008

Page 2 of 5
TWWTP HWA Printed 3/812018,413 PM
A B C D E F G H IJI K
49 Average Influent NH3(mg/I)
50 Average Anaerobic Digester NH3(mg/1)
51 Inhibition Loading Calculations only enter when have ANAEROBIC digester
A S/Nit,IT F A S/Nit,/T F A S/Nit,/r F Digester Minimum Minimum
Primary Primary Inhibition Inhibition Inhibition Inhibition Digester Inhibition Inhibition
Removal Rate Removal Rate Concentration Concentration Loading Concentration Inhibition Digester Inhibition Loading Loading
52 Pollutant (%) Source (mg/I) Source (lbs/day) (Ing/1) Conc Source, Loading(lbs/day) (lbs/day) Source
53 BOD
54 TSS
55 Ammonia 480 Activated Sludge 23658 9120 23658 91 AS/Nit/TF it
56 Arsenic 0 1 Activated Sludge 4 9289 4 9289 AS/Nit/TF it
57 Cadmium 1 Activated Sludge 49 2894 49 2894 AS/Nit/TF it
58 Chromium 0 394 Nitrification 19 4200 19 4200 AS/Nit/TF it
59 Copper 0 48 Nitrification 23 6589 23 6589 AS/Nit/TF it
60 Cyanide 0 34 Nitrification 16 7584 16 7584 AS/Nit/TF it
61 Lead 0 5 Nitrification 24 6447 24 6447 AS/Nit/TF it
62 Mercury 0 1 Activated Sludge 4 9289 4 9289 AS/Nit/TF tr
63 Molybdenum
64 Nickel 0 25 Nitrification 12 3224 12 3224 AS/Nit/TF it
65 Selenium
66 Silver 0 25 Activated Sludge 12 3224 12 3224 AS/Nit/TF it
67 Zinc I Nitrification 49 2894 49 2894 AS/Nit/TF it
68 Total Nitrogen
69 Total Phos
70 Chlonde
71 Fluoride
72 e
73 f
74 g
75 h
76 I
Modeled after Chapter 5-HWA Guidance,Appendix 5-A
Revision Date February 2008

TWWTP HWAPage 3 of 5
Printed 3/8/2018,413 PM
A I B I C I D I E I F I G I H I I I J 1 K
77
78 Sludge Loading Calculations
Sludge Ceiling Class A Limits Class A Limits Class A Limits Minimum Minimum
Sludge Ceiling Sludge Ceiling Load Cumulative Sludge Cumulative Monthly Monthly Avg Mon Avg Load - Sludge Sludge
Concentration Load -HASL Calc- Rate Limit Sludge Loading Average Rate Loading HASL Calc- Loading Loading
79 Pollutant Limit(mg/kg) (lbs/day) (lbs/day) (lbs/(acre*hfe)) (lbs/day) Lnmt(mg/kg) (lbs/day) (lbs/day) (lbs/day) Sorce
80 HOD
81 TSS
82 Ammonia
83 Arsenic 75 36 41 0 0000 HASL-Cl
84 Cadnuum 85 1 3230 34 39 1 3230 Sludge Cello
85 Chromium
86 Copper 4300 33 5897 1338 1500 33 5897 Sludge Cello
87 Cyanide
88 Lead 840 20 2415 267 300 20 2415 Sludge Cello
89 Mercury 57 2,9968 15 17 2 9968 Sludge Celli
90 Molybdenum 75 22 9553 22 9553 Sludge Celli
91 Nickel 420 S 9953 374 420 8 9953 Sludge Cello
92 Selenium 100 0 4219 89 100 0 4219 Sludge Celli
93 Silver
94 Zinc 7500 83 6017 2498 2800 83 6817 Sludge Cello
95 Total Nitrogen
96 Total Phos
97 Chlonde
98 Fluonde
99 e
100 f
101 g
102 h
103 I
104
Modeled after Chapter 5-HWA Guidance,Appendix 5-A
Revision Date February 2008

TWWTP HWA Page4of5
Printed 3/8/2018,413 PM
A I B I C I D I E I F I G H I I I J 1 K
105 Maximum Allowable Headworks Loading Calculations
Minimum Pass Minimum Minimum Minimum Minimum Allowable Maximum Allowable
Through Loading Pass Through Inhibition Loading Inhibition Loading Sludge Loading Sludge Loading Headworks Headworks Loading
106 (lbs/day) Source (lbs/day) Source (lbs/day) Sorce Loading(lbs/day) Source
107 BOD 20016 0 Design 20016 0 Design
108 TSS 25020 0 Design 25020 0 Design _
109 Ammonia 2502 0 Design 23658 9120 AS/Nit/TF inhibits 2502 0 Design _
110 Arsenic 0 8962 Stream Std 4 9289 AS/Nit/TF inhibits 0 8962 Stream Std
111 Cadmium 0 2987 Stream Std 49 2894 AS/Nit/TF inhibits 1 3230 Sludge Ceiling HASL 0 2987 Stream Std
112 Chromium 4 8465 Stream Std 19 4200 AS/Nit/TF inhibits I 4 8465 Stream Std
113 Copper 23 6589 AS/Nit'TF inhibits 33 5897 Sludge Ceiling HASL 23 6589 AS/Nit/TF inhibition
114 Cyanide 0 7950 Stream Std 16 7584 AS/Nit/TF inhibit I 0 7950 Stream Std
115 Lead 3 1596 Stream Std 24 6447 AS/Nit/TF inhibits 20 2415 Sludge Ceiling HASL 3 1596 Stream Std
116 Mercury 0 02914 NPDES 4 9289 AS/Nit/TF inhibits 2 9968 Sludge Ceiling HASL _ 0 02914 NPDES
117 Molybdenum 22 9553 Sludge Ceiling HASL _ 22 9553 Sludge Ceiling HASL
118 Nickel 2 4843 Stream Std 12 3224 AS/Nit/TF inhibits 8 9953 Sludge Ceiling HASL 2 4843 Stream Std
119 Selenium 0 4929 Stream Std 0 4219 Sludge Ceiling HASL 0 4219 Sludge Ceiling HASL
120 Silver 12 3224 AS/Nit/TF inhibits I 12 3224 AS/Nit/TF inhibition
121 Zinc 49 2894 AS/Nit/TF inhibits 83 6817 Sludge Ceiling HASL 49 2894 AS/Nit/TF inhibition
122 Total Nitrogen 4003 2 Design 4003 2000 Design
123 Total Phos 650 0 Design 650 0000 Design
124 Chlonde 15755 5 Stream Std 15755 4661 Stream Std
125 Fluonde 103 2 NPDES 103 2359 NPDES
126 e
127 f
128 g
129 h
130 I
131
Modeled after Chapter 5-HWA Guidance,Appendix 5-A
Revision Date February 2008

TWWTP U AIAPage 5 of 5
Printed 3/8/2018,4 13 PM
A I B I C I D I E I F I G I H I I I J 1 K
132
133 Maximum Allowable Industrial Loadings Calculations
Maximum Maximum
Allowable Check to Use Uncontrollable Allowable
Headworks Loading IIASL Calcs Concentration Uncontrollable Uncontrollable Industrial Design vs Pass-
134 Pollutant (lbs/day) MAHL Basis (x) (mg/1) Source Load(lbs/day) Load(lbs/day) Thru Warning
135 BOD 20016 0000 Design 187 mass balance 8281 3698 11734 6302
136 TSS 25020 0000 Design 225 mass balance 9964 2150 15055 7850
137 Ammonia 2502 0000 Design 29 5 mass balance 1306 4193 1195 5807
138 Arsenic _ 0 8962 Stream Std 0 003 mass balance 0 1329 0 7633
139 Cadmium 0 2987 Stream Std X 0 0003 mass balance 0 0133 0 2854
140 Chromium 4 8465 Stream Std N/A 0 004 mass balance 0 1771 4 6694
141 Copper 23 6589 AS/Nit/TF inhibiti X 0 0436 mass balance 1 9308 21 7281
142 Cyanide 0 7950 Stream Std N/A 0 0005 mass balance 0 0221 0 7728
143 Lead 3 1596 Stream Std X 0 0044 mass balance 0 1949 2 9647
144 Mercury 0 02914 NPDES X 0 00008 mass balance 0 00354 0 02559
145 Molybdenum 22 9553 Sludge Ceiling HP X 0 0076 mass balance 0 3366 22 6188
146 Nickel 2 4843 Stream Std X 0 0075 mass balance 0 3321 2 1522
147 Selenium 0 4219 Sludge Ceiling 10 X 0 0021 mass balance 0 0930 0 3289
148 Silver 12 3224 AS/Nit/TF inhibits N/A 0 001 mass balance 0 0443 12 2781
149 Zinc 49 2894 AS/Nit/TF inhibit X 0 4094 mass balance _ 18 1304 31 1590
150 Total Nitrogen 4003 2000 Design 44 9053 mass balance 1988 6492 2014 5508
151 Total Phos 650 0000 Design 5 3951 mass balance 238 9242 411 0758
152 Chloride 15755 4661 Stream Std 86 8057 mass balance 3844 2251 11911 2409
153 Fluoride 103 2359 NPDES 0 7178 mass balance 31 7881 71 4478
154 e
155 f
156 g
157h
158 I
Modeled after Chapter 5-HWA Guidance,Appendix 5-A
Revision Date February 2008

Name HWAATDeslgn (February 2008), Worksheet Name HASL Page 1 of 1
Printed 3/8/2018,4 14 PM
Headworks Addendum for Sludge Loadings(HASL)worksheet
POTW Name=> Triangle WWTP Spreadsheet Instructions
POTW NPDES#=> NC0026051 MAHL_sv= (Q_potw*C_inf*8 34)/(%_ad1)lbs/day
POTW Sludge Permit#=> NA 1) Data entered only in Heavy Bordered cells Rest of worksheet is
Date=> 3/7/2018 protected,password is"2" Q_potw=Average POTW flow(mgd)
POTW Average Flow=> 5 91 mgd C_inf=Average influent concentration(mgd)
Avg sludge flow to Disposal=> 0 mgd 2)This spreadsheet changes based on the class of sludge generated %_ad1= Per percentage of Sludge Limit as decimal
Average%Solids to Disposal=> 18 00 % inputted in cell C13 of the HWA spreadsheet The title and the limits in (example enter 117%as 1 17)
Sludge Site Area permitted=> 0 acres column G of this spreadsheet are updated automatically 8 34= Conversion Factor
3)Formulas in Comprehensive Guidance HWA Chapter,Section K
Enter actual Calculate MAHL_sv
CUMULATIVE Flag if> based on%of
LOADING data Enter actual 80%of Monthly Average
from most recent Flag if MAXIMUM SLUDGE %of Applicable Concentration Limits
CUMULATIVE Sludge Report for %of Greater Sludge Ceiling CONC from most Applicable Ceiling Flag if> Enter Average to Protect Sludge
SLUDGE the most heavily Cumulative than Concentrations recent Sludge Report Ceiling Conc Conc 100%of POTW Influent Quality(insert these
POLLUTANT LOADING LIMITS loaded field' Limit 80% Limits or LTMP Data Limit Limit the Limit Conc values into HWA)
lbs/acre lbs/acre mg/dry kg m./d k. % Flag Flag mg/I lbs/day
Arsenic 36- 75 2 490 3 3 % 0 0028 4.1569
Cadmium 34- 85 0 950 1 1 00 0 0003 1.3230
Chromium
Copper 1338 4300 277 000 6 4 % 0 0439 33.5897
Lead 267 840 9 000 1 1 % 0 0044 20.2415
Mercury 1557 0 075 0 I % 0 0001 2.9968
_
Molybdenum 75 1 240 1 7 % 0 0077 22.9553
Nickel 374 420 16 800 4 0 % 0 0073 8.9953
Selenium 89 100 25 700 25 7 % 0 0022 0.4219
Zinc 2498 7500 1900 000 25 3 % 0 4301 83.6817 i
If over ceiling conc
IF Greater than 80%Flag POTW MUST SUBMIT If Greater than 80%of the concentration limit POTW POTW must reduce
LAND APP&METALS MANAGEMENT PLAN n/a MUST SUBMIT METALS MANAGEMENT PLAN n/a MAHL n/a
'The most heavily loaded field is determined for each polluntant indivisually,and is the field that contains the highest amount(lbs/acre)of that polluntant

,
Removal Rate Calculations
FLOW BOD TSS AMMONIA
Influent Used in Effluent Used inInfluent Used in Effluent Used in Influent Used in Used in
Sample Date m_d in Calculation< m_• L Calculation e m:11_, Calculation< na /L Calculation a m_• L Calculation <L Calculation
11/6/2012 Spreadsheet 5 1 • „ 197 197 Q 2 1 . 212 212 Q 2 5 1 25 . 35 5 35 5 Q 0 1 0 05
Instructions
2/6/2013.1) Data 6 35 • 158 158. 2 4 2 4 . 360 360 Q 5 2 5 . 31 31 . 0 48 0 48
8/6/2013 Heavyd only m 5 24 U 245 245 Q 2 1 . 100 100 Q 2 5 1 25 . 34 34. 0 16 0 16
5/6/2014 Bordered cells. 6 45 • 106 106. 3 2 3 2 . 248 248 G 2 5 1 25 . 31 31 Q 0 1 0 05
Rest of
11/4/2014 worksheet is 5 53 • 116 116 Q 2 1 I 148 148 Q 2 5 1 25 I 34 34. 0 11 0 11
5/5/2015 protected,
password is 4 83 • 137 137,1 2 1 . 192 192 Q 2 5 1 25 . 25 25 Q 0 1 0 05
11/3/2015,"2" 7 03 • 145 145 G 2 1 . 168 168 IN 2 5 1 25 . 12 12 12 0 1 0 05
2/9/2016 2) For below 4 94 • 217 217 1 2 1 . 180 180 112 5 1 25 II27 27 11 0 1 0 05
'detection data,
8/9/2016 enter^ in" 6 37 • 150 150. 2 6 2 6 II160 160 Q 2 5 1 25 . 20 20 Q 0 1 0 05
7 27
detection 4 89 • 164 164. 2 5 2 5 . 176 176 G 2 5 1 25 11128 28 Q 0 1 0 05
11/7/2017 orEflevel fluin entInfluent 3 98 • 253 253 . 2 4 2 4 . 344 344 Q 2 5 1 25 . 30 30 Q 0 1 0 05
2/6/2018 mgn columns 4 82 • 197 197 Q 2 1 I 188 188 Q 2 5 1 25 . 22 5 22 5 G 0 1 0 05
willSpraadsheet ■--I
-- .--.-- .•--Im
auto-
caculaty ■ . . . . .
calculate
e-
averages andremova ■ . . . . .
using1lrates ■-,-,. . . . .
using 1/2
value entered- 3)Document
■ . . . . .
removal Ratechoice
com ■--•-- •--• • •
4)Formulas in
hensiveGuide --II
-- --II
-- II
--U--
Column Averages=> section EPter, 5 46083 173 75 1 675 206 333 1 354167 27 5 0 1
page 1 Unpaired Site Specific RR=> 99 04% Unpaired Site Specific RR=> 99 34% Unpaired Site Specific RR=> 99 64%
Literature/Default RR=> 85 00% Literature/Default RR=> 85 00% Literature/Default RR=> 85 00%
29 % of data is BDL 50 % of data is BDL 38 % of data is BDL
RR fbi this FIWA=> 99 04% R.R.for this 1-IWA=> 99 34% Ind.foi this 1-IWA=> 99 64%
TWWTP Removal Rate Spreadsheet 2013-2017
Removal Rates
Page 1 of 7 pages
3/8/2018, 917 AM
Revision August 1999

Removal Rate Calculations
ARSENIC CADMIUM CHROMIUM
Influent Used in Effluent Used in Influent Used in Effluent Used in 111 Influent Used in BEI Used in
Sample Date < m: L Calculation < mg/L Calculation < in: Calculation < m! L Calculation _ m•/L Calculation < Calculation
11/6/2012 < 0 01 0 005 < 0 01 0 005 < 0 002 0 001 < 0 002 0 001 0 0 005 0 0025 1110 005 0 0025
2/6/2013 < 0 02 0 01 < 0 01 0 005' 0 0002 0 0002 < 0 002 0 001 U 0 0049 0 0049 1110 005 0 0025
-1 MIME IM
8/6/2013 <0 002 0 001 < 0 002 0 001 < 0 00015 0 000075 < 0 00015 0 000075 • 0 0032 0 0032 U 0 002 0 002
5/6/2014 0 002 0 001 < 0 002 0 001 < 0 00015 0 000075 < 0 00015 0 000075 • 0 0036 0 0036 G 0 002 0 001
11/4/2014 < 0 01 0 005 < 0 01 0 005 < 0 002 0 001 < 0 002 0 001 Q 0 005 0 0025 Q 0 005 0 0025
5/5/2015 < 0 002 0 001 < 0 002 0 001 < 0 00015 0 000075 < 0 00015 0 000075 II 0 006 0 006 U 0 002 0 002
11/3/2015 111.11 0 001 < 0 002 0 001 < 0 00015 0 000075 < 0 00015 0 000075 1 0 005 0 005 U 0 003 0 003
2/9/2016 < 0 01 0 005 < 0 01 0 005 < 0 002 0 001 < 0 002 0 001 11 0 005 0 0025 IN 0 005 0 0025
8/9/2016 < 0 002 0 001 < 0 002 0 001 0 00032 0 00032 < 0 00015 0 000075 I 0 004 0 004 U 0 002 0 002
5/9/2017 < 0 002 0 001 < 0 002 0 001 < 0 00015 0 000075 < 0 00015 0 000075 I 0 004 0 004 U 0 002 0 001
11/7/2017 < 0 002 0 001 < 0 002 0 001 < 0 00015 0 000075 < 0 00015 0 000075 NI 0 005 0 005 G 0 002 0 001
2/6/2018 < 0 002 0 001 < 0 002 0 001 < 0 00015 0 000075 < 0 00015 0 000075 I 0 004 0 004's 0 002 0 002
--I
■ :___I II
��
WIlla
■
mi IMIII , 11110-
■ ,1
Column Averages=> 0 0028 0 0023 0 0003 0 0004 0 0039 0 0020
Unpaired Site Specific RR=> >50%BDL Unpaired Site Specific RR=> >50%BDLI Unpaired Site Specific RR=> 49 15%
Literature/Default RR=> 45 00% Literature/Default RR=> 67 00% Literature/Default RR=> 82 00%
100 % of data is BDL 92 % of data is BDL 42 % of data is BDL
RR for this I-tW A > 45 00% FLR for this LIVIA er 67 00% RR foi this HWA�> 49 15%
TWWTP Removal Rate Spreadsheet 2013-2017
Removal Rates
Page 2 of 7 pages
3/8/2018, 9 17 AM
Revision August 1999

Removal Rate Calculations
COPPER CYAN DE LEAD
Influent Used in Effluent Used in
Influent Used in _ Used in Influent Used in Effluent Used in
m
Sample Date < •/L Calculation < mg/L Calculation < _ Calculation < mg/L Calculation < mg/L Calculation
11/6/2012 _ 0 045 0 045 < 0 01 0 005 < 0 005 0 0025 < 0 005 0 0025 < 0 01 0 005 < 0 01 0 005
2/6/2013 0 067 0 067 < 0 002 0 001 < 0 005 0 0025 < 0 005 0 0025 0 0027 0 0027 < 0 01 0 005
8/6/2013 0 035 0 035 0 003 0 003 < 0 005 0 00254< 0 005 0 0025 0 0021 0 0021 < 0 0005 0 00025
5/6/2014 1 0 047 0 047 < 0 002 0 001 < 0 005 0 0025 < 0 005 0 0025 0 0018 0 0018 < 0 0005 0 00025
11/4/2014 0 039 0 039 <0 002 0 001 < 0 005 0 0025 < 0 005 0 0025 < 0 01 0 005 < 0 01 0 005
5/5/2015 0 043 0 043 < 0 002 0 001 < 0 005 0 0025 < 0 005 0 0025 0 0021 0 0021 < 0 0005 0 00025
11/3/2015 0 036 0 036 0 003 0 003 < 0 005 0 0025 < 0 005 0 0025 0 0033 0 0033 < 0 0005 0 00025
2/9/2016 0 039 0 039 0 002 0 002 < 0 005 0 0025 < 0 005 0 0025 0 021 0 021 < 0 01 0 005
8/9/2016 0 042 0 042 0 004 0 004 < 0 005 0 0025 < 0 005 0 0025 0 0026 0 0026 < 0 0005 0 00025
..—.1 I — -�
5/9/2017 0 038 0 038 0 003 0 003 < 0 005 0 0025 < 0 005 0 0025 0 0016 0 0016 < 0 0005 0 00025
S ��-
11/7/2017 0 056 0 056 0 002 0 002 < 0 005 0 0025 < 0 005 0 0025 0 0023 0 0023 < 0 0005 0 00025
2/6/2018 0 04 0 04 0 004 0 004 < 0 005 0 0025 < 0 005 0 0025 0 0028 0 0028 < 0 0005 0 00025
_
mii ......
11.11•1MMI MI
I. I
MII is.-mil II..- IMINII MI
IMMIIMIIMINIP
Column Averages=> 0 0439 0 0025 0 0025 0 0025 0 0044 0 0018
Unpaired Site Specific RR=> 94 31 % Unpaired Site Specific RR=> >50%BDL Unpaired Site Specific RR=>>50%BDLI
Literature/Default RR=> 86 00% Literature/Default RR=> 69 00% Literature/Default RR=> 61 00%
21 % of data is BDL 100 % of data is BDL 58 % of data is BDL
RR L for this HWA i-=,> 94 31 % RR tot this HWA=> 69 00% RR for this HWA.=> 61 00%
TWWTP Removal Rate Spreadsheet 2013-2017
Removal Rates
Page 3 of 7 pages
3/8/2018, 9 17 AM
Revision August 1999

•
Removal Rate Calculations
MERCURY MOLYBDENUM NICKEL
ll Influent Used in Effluent Used inInfluent Used in Effluent Used in Influent Used in Effluent Used in
Sample Date m• L Calculation < m•/L Calculation e m•/L Calculation < m•/L Calculation e
m• L Calculation < m•/L Calculation
11/6/2012 II 0 000167, 0 000167 G o 000001 5E-07 U--,0-- El 0 01 0 005 U 0 01 0 005
2/6/2013 11 26E-05 1 26E-05 1 0 000001 5E-07 I 0 019 0 019 II 0 014 0 014 1 0 0075 0 0075 G 0 01 0 005
8/6/2013 • 0 000114 0 0001141 1 62E-06 1 62E-06 I 0-- U 0 0047 0 0047 0 0 0031 0 0031
5/6/2014 II 8 31E-05 8 31E-05,1 1 05E-06 1 05E-06 1 0 01 0 01 111 0 0078 0 0078 U 0 0052 0 0052 II 0 0024 0 0024
11/4/2014 17 05E-05 7 05E-05 IN 0 000001 5E-07 1110 005 0 0025 G 0 005 0 0025 G 0 01 0 005 1 0 01 0 005
5/5/2015 I 0 00015 0 00015 1 4 83E-06 4 83E-06 0 0 01 0 01 l 0 007 0 007 • 0 013 0 013 I 0 003 0 003
11/3/2015 18 58E-05 8 58E-051 1 86E-06 1 86E-06 0 0 004 0 0041 0 004 0 004 I 0 0051 0 0051 II 0 0031 0 0031
2/9/2016 1 9 54E-05 9 54E-05 1 2 44E-06 2 44E-06 G 0 005 0 0025 il 0 005 0 0025 • 0 012 0 012 II 0 01 0 005
8/9/2016 1 2 54E-05 2 54E-05 U 1 22E-06 1 22E-06 • 0 006 0 006 0 0 007 0 007 0 0 013 0 013 1 0 0039 0 0039
5/9/2017 II 4 68E-05 4 68E-05 0 1 13E-06 1 13E-06 0 0 006 0 006 I 0 003 0 003 1 0 006 0 0061 0 0028 0 0028
11/7/2017 0 0 000086 0 000086 0 2 55E-06 2 55E-06 II 0 004 0 004 1 0 003 0 003 1 0 0061 0 0061 0 0 0025 0 0025
2/6/2018 0 3 32E-05 3 32E-05 11 53E-06 1 53E-06 II 0 007 0 0071 0 004 0 004 0 0 0051 0 0051 0 0 0027 0 0027
• I ■ ■ ■ ■��
■ U I ■ ■ ■��
■ I ■ ■ ■ .1
■ I ■ I ■ ,■��
■��■ ■ I I .0
1 ■ ■ ,■ ■ ■��
I ,1 ■ ,U ■ ■��
I I ■ ■ ■ ■ ,�
Column Averages=> 0 00008 0 00000 0 0071 0 0055 0 0073 0 0036
Unpaired Site Specific RR=> 97 97% Unpaired Site Specific RR=> 22 82% Unpaired Site Specific RR=> 50 40%
Literature/Default RR=> 60 00% Literature/Default RR=> 33 00% Literature/Default RR=> 42 00%
13 % of data is BDL 20 % of data is BDL 25 % of data is BDL
RR for this 1-IWA=> 97 97% RR for This HWA=> 22 82% RR for this HWA=> 50 40%
TWWTP Removal Rate Spreadsheet 2013-2017
Removal Rates
Page 4 of 7 pages
3/8/2018, 9 17 AM
Revision August 1999

Removal Rate Calculations
SELENIUM SILVER ZINC
Influent Used in Effluent Used in Influent Used in Used in Influent Used in Used in
Sample Date < in:L Calculation < m•/L Calculation < m L Calculation <y Calculation e m•/L Calculation <Mil
Calculation
11/6/2012 < 0 01 0 005 < 0 01 0 005 < 0 005 0 0025 < 0 005 0 0025 I 0 333 0 333'E 0 065 0 065
mi
2/6/2013 < 0 002 0 001 _ 0 01 0 005 < 0 0005 0 00025 < 0 005 0 0025 I 0 582 0 582 U 0 085 0 085
8/6/2013 0 002 0 002 0 002 0 001 < 0 005 0 0025 < 0 0005 0 00025 I 0 36 0 36 U 0 112 0 112
5/6/2014 < 0 002 0 001 < 0 002 0 001 r- 0 0011 < 0 0005 0 00025 I 0 481 0 481 U 0 11 0 11
11/4/2014 < 0 01 0 005 < 0 01 0 005 < 0 005 0 0025 < 0 005 0 0025 I 0 425 0 425 U 0 095 0 095
5/5/2015 < 0 002 0 001 < 0 002 0 001 < 0 0005 0 00025 < 0 0005 0 00025 I 0 463 0 463 U 0 078 0 078
11/3/2015 < 0 002 0 001 0 002 0 001 < 0 0005 0 00025 < 0 0005 0 00025 I 0 368 0 368 U 0 118 0 118
_
2/9/2016 < 0 01 0 005 _ 0 01 0 005 < 0 005 0 0025 < 0 005 0 0025 U 0 463 0 463 II 0 053 0 053
8/9/2016 < 0 002 0 001 < 0 002 0 001 �- 0 00025 < 0 0005 0 00025 U 0 343 0 343 U 0 053 0 053
5/9/2017 < 0 002 0 001 < 0 002 0 001 < 0 0005 0 00025 < 0 0005 0 00025 U 0 4 04,E 0 099 0 099
11/7/2017 < 0 002 0 001 < 0 002 0 001 0 0006 0 0006 < 0 0005 0 00025 II 0 543 0 543 U 0 108 0 108
2/6/2018 < 0 005 0 0025 < 0 005 0 0025 < 0 0005 0 00025 < 0 0005 0 00025 II 0 4 0 4 U 0 066 0 066
I II
.--U--
■ U��
--I
■ ■��
■ ■��
Column Averages=> 0 0022 0 0025 0 0011 0 0010 0 4301 0 0868
Unpaired Site Specific RR=> >50%BDL Unpaired Site Specific RR=> >50%BDLI Unpaired Site Specific RR=> 79 81 %
Literature/Default RR=> 50 00% Literature/Default RR=> 75 00% Literature/Default RR=> 79 00%
96 % of data is BDL 92 % of data is BDL 0 % of data is BDL
RR fru this HWA=> 50 00% RR lot this 1-IWA=> 75 00% RR for this HWA=> 79 81 %
TWWTP Removal Rate Spreadsheet 2013-2017
Removal Rates
Page 5 of 7 pages
3/8/2018, 9 17 AM
Revision August 1999

• e
Removal Rate Calculations
TOTAL NITROGEN TOTAL PHOSPHORUS CHLORIDE
Influent Used in Effluent Used m Influent Used Used in Influent UsedUsed in
Sample Date
Il
m• L Calculation < m•/L Calculation 111
m• in/L Calculation <y Calculation e in m•/L Calculation <! Calculation
11/6/2012 I 52 1 52 1 1 1 62 1 62 • 7 07 7 07 1 0 039 0 039 I 53 8 53 8 I 94 8 94 8
2/6/2013 I 53 9 53 ' 0 1 61 1 61 0 6 87 6 : . 0 034 0 034 I •
.: s 81 1
8/6/2013 I . 5 1 0 0 343 0 343 185 8 I 80 80
5/6/2014 • 53 6 53 . I 3 02 3 02 1 6 76 6 76,1 0 024 0 024 0 77 3 77 3,0 65 6 65 6
11/4/2014 I 50 8 50 8 1 3 65 3 65 0 6 05 6 05 1 0 203 0 203 I 65 8 65 8 1 79 2 79 2
5/5/2015 0 339 3390 401 401 I 496 4961 0218 0218 II 775 7751 622 622
11/3/2015 I 24 3 24 3. 2 98 2 98 0 2 74G 0 02 1 1 6
56 1
2/9/2016 0 48 5 • 3 3 1 5 26�,1 0 215 0 299 I . 56
8/9/2016 5 51 0 3 73 0 0 392 1 9 . . .1 .1
5/9/2017 •��1� 435 I 516�p 002 11 0®®.� M
11/7/2017 I 44 4 44 4 1 4 06 4 06 • 6 92 6 92.1 0 633 0 633 I 83 83 1 80 80
2/6/2018 I 35 9 35 ' . 7 45 7 45 01 1: 1 1: G 0 02 1 1 II 82 82 0 69 69
■ ■ ■® ■ ■ ■��
■ ■ ■ ■ ■ �■��
■ ,■�� ■ ,■�� ■ ■��
■ ■�� ■ A ■ ■��
■ I ■ ■ ■ ■��
■ 0 ■ U ■ ■��
Column Averages=> 42 3833 3 8633 5 0726 0 1776 90 4583 70 7500
Unpaired Site Specific RR=> 90 88% Unpaired Site Specific RR=> 96 50% Unpaired Site Specific RR=> 21 79%
Literature/Default RR=>II Literature/Default RR=>II Literature/Default RR=>lI
0 % of data is BDL 13 % of data is BDL 0 % of data is BDL
RR fox this HWA-> 90 88% RR Cox this HWA=> 96 50% ER fox this HWA--> 21 79%
TWWTP Removal Rate Spreadsheet 2013-2017
Removal Rates
Page 6 of 7 pages
3/8/2018, 9 17 AM
Revision August 1999

Removal Rate Calculations
FLUORIDE
Influent Used in Effluent Used m Influent Used in Effluent Used in Influent Used in MI Used in
Sample Date < m /L Calculation < mg/L Calculation < mg/L Calculation < mg/L Calculation < m:/L Calculation < Calculation
11/6/2012 0 6 0 6 0 9 0 9 _
2/6/2013 1 1 0 8 0 8
8/6/2013 1 2 1 2 0 8 0 8 _
5/6/2014 0 8 08 06 06 4
11/4/2014 0 62 0 62 0 39 0 39
5/5/2015 0 884 0 884 0 587 0 587
11/3/2015 0 619 0 619 0 96 0 96
1.1 ,
2/9/2016 0 79 0 79 0 6 0 6
8/9/2016 0 893 0 893 0 809 0 809
5/9/2017 0 919 0 919 0 686 0 686 _
11/7/2017 0 659 0 659 0 639 0 639
2/6/2018 071 071 056 056
I MN / II . IIMMr 411/ 1w
Column Averages=> 0 8078 0 6943
Unpaired Site Specific RR=> 14 06% Unpaired Site Specific RR=>� Unpaired Site Specific RR=>�
Literature/Default RR=>II Literature/Default RR=>II Literature/Default RR=>II
0 % of data is BDL of data is BDL of data is BDL
RR for this HWA=> 14 06% RR for this HWA=>II lei for this HWA=>II
TWWTP Removal Rate Spreadsheet 2013-2017
Removal Rates
Page 7 of 7 pages
3/8/2018, 9 17 AM
Revision August 1999

SIU.Uncont.Mass.Bal
, FLOW BOD TSS AMMONIA ARSENIC
INDUSTRY Industry Average Discharge Average Discharge Average Discharge Average Discharge Average Discharge
IUP NAMES Permit/Pipe Conc Load Conc Load Conc. Load Conc Load
Count (please list alphabetically) number MGD gal/day mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day
1 AstraZeneca DC-078/001 0 001592 1,592
2 Aurobmdo DC-089/001 0 000394 394_189 0 62 291 0 96 78 1
0.2566
3 Biogen DC-080/001 0.071858 71,858 58.91 68 6 41 11 2 1.1986
4 Braebum DC-090/001 0 _
5 Cmtas DC-037/001 0 061973 61,973 363 9 188 08 280 1 144 77 11 3 5 8405
6 Cree DC-076/008 0 238672 238,672 18 1 36.0285
Cree DC-076/009 0.017465 17,465 0.01 0 0015
7 Cree RTP DC-040/012 0 110764 110,764 3 8 3.5103
8 JMC DC-023/001 0 000205 205 2 2 0 0038
9 Micross DC-085/001 0 039683 39,6834.- 4 4 1.4562
10 Novan DC-084/001 0.000486 486_
11 PowerSecure DC-095/001 0 _
12 Phonomc DC-075/001 0 008158 8,158
13 SCM Metal DC-005/001 0 011336 11,336 � 6 9 0 6523
14 United Therapeutics DC-053/001 0 033478 33,478 _ 26 89 39 2 10.94 2.4 0 6701
Sum of Industrial Loadmg(lbs/day)=> 0.59611 596064 f 274 502911 197 7838 49.6169 0.0015
MGD gal/day mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day
Avg Influent Loadmg(lbs/day)=> 5 911 5,910,0001 173 7J 8564 031 206 331 10169.88E 27 51 1355.45851 0 00281 0.1380
Uncontrollable Load from Mass Bal(lbs/day)=> 5 3139 8,289.5304 9,972 0981 1,305 8416 0 1366
Uncontrollable Concen.from Mass Bal(mg/L)=>
I 1871 I 2251 1 29.51 I0.00311
Uncont.from Uncont Sampling(mg/L+lbs/day)_> I � I 1
Uncontrollable Concen From Literature(mg/L)_> I 2501
1 2501I 251 1 0 0031
Uncontrollable conc.to be used iia 1-I 'A (mg/L) 187 225 29.5 0 003
Spreadsheet Instructions
1)Applicable Values should be entered in the Heavy Bordered cells Rest of worksheet is Choose"Uncontrollable Concentration to be used in HWA"(row 31)from Uncontrollable Concentration
protected,password is"2" From "Mass Balance"(row 25),
2)Formulas are discussed in the Comprehensive Guidance,Chapter 5,Section E,page 5 "Sampling"(row 27),or"Literature"(row 29) Document reasons
Uncontrollable Mass Balance Spreadsheet 2017
SIU Uncont Mass Bal
Page 1 of 5 pages
3/8/2018,9 15 AM
Revision August 1999

tia .
SIU.Uncont.Mass.Bal
������������������������������������������� FLOW CADMIUM CHROMIUM COPPER CYANIDE
INDUSTRY Industry Average Discharge Average Discharge Average Discharge Average Discharge Average Discharge
IUP NAMES Permit/Pipe Conc Load Conc. Load Conc. Load Conc Load
Count (please list alphabetically) number MGD gal/day mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day
1 AstraZeneca DC-078/001 0 001592 1,592 _
2 Aurobmdo DC-089/001 0 000394 394 0 0 00000 083 0 0003 0 0025 0.0000
3 Biogen DC-080/001 0 071858 71,858 0 0005 0 0003 _ 0 0006
4 Braeburn DC-090/001 0
5 Cmtas DC-037/001 0 061973 61,973 0 002 0 0010 0 0057 0 094 0 0486
6 Cree DC-076/008 0 238672 238,672 0.0005 0 0010 _ 0.0050 0 068 0.1354 0 038 0.0756
Cree DC-076/009 0 017465 17,465 0 0005 0.0001 __ 0 0004 0.081 0 0118
7 Cree RTP DC-040/012 0 110764 110,764 0 0005 0 0005 _ 0.0023 0 025 0.0231 0 019 0.0176
8 JMC DC-023/001 0 000205 205 0 001 0 0000 0 0021 -6 0 0001 0 013 0 0000
9 Micross DC-085/001 0 039683 39,683 0 00016 0.0001 0 003 0.0010 0 018 0 0060 0 006 0.0020
10 Novan DC-084/001 0 000486 486 0.001 0 0000 0 167 0.0007
11 PowerSecure DC-095/001 0
12 Phonomc DC-075/001 0 008158 8,158 _
13 SCM Metal DC-005/001 0.011336 11,336 0 00029 0 0000_ 0 059 0 0056 0 011 0 0010
14 United Therapeutics DC-053/001 0 033478 33,478 0 0 0001 0 0015
Sum of Industrial Loading(lbs/day)=>=.5.7671 5961 596064' 1 0 0030 0 0170 0.2314 1 0.0978
MGD gal/day mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day
Avg Influent loadmg(lbs/day)=> 5 911 5,910,000 0 00031 0 01481 0 00391 0 1922L 0 0439 2 1638 0 00251_9122i
Uncontrollable Load from Mass Bal(lbs/day)=> 5 3139 0.0117 0 1752 1 9324 0 0254
Uncontrollable Concen.from Mass Bal(mg/L)=> 1 0.00031 1 0.00401 1 0 04361 1 0 00061
Uncont from Uncont Sampling(mg/L+lbs/day)_>
Uncontrollable Concen From Literature(mg/L)_> I 0 0031 I 0 051 I 0.0611 0 0411
Ui eontipliable cone to be used m FTWA,(rrg/L)=- 0 0003 0.004 0 0436 0 0005
Spreadsheet Instructions
1)Applicable Values should be entered in the Heavy Bordered cells Rest of worksheet is Choose"Uncontrollable Concentration to be used in HWA"(row 31)from Uncontrollable Concentration
protected,password is"2" From "Mass Balance"(row 25),
2)Formulas are discussed in the Comprehensive Guidance,Chapter 5,Section E,page 5 "Sampling"(row 27),or"Literature"(row 29) Document reasons
Uncontrollable Mass Balance Spreadsheet 2017
SIU Uncont Mass Bal
Page 2 of 5 pages
3/8/2018,9 15 AM
Revision August 1999

SIU.Uncont.Mass.Bal
FLOW LEAD MERCURY MOLYBDENUM NICKEL
INDUSTRY Industry Average Discharge Average Discharge Average Discharge Average Discharge Average Discharge
IUP NAMES Pernut/Pipe Conc Load Conc Load Conc. Load Conc. Load
Count (please list alphabetically) number MGD gal/day , mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day
1 AstraZeneca DC-078/001 0.001592 1,592 0.000005 0.00000
2 Aurobmdo DC-089/001 0.000394 394 0.000131 0.00000 0 002 0.0000
3 Biogen DC-080/001 0.071858 71,858 0.000003 0 00000 0 001 0 0006
4 Braeburn DC-090/001 0
5 Cmtas DC-037/001 0.061973 61,973 0 023 0.0119 0.000021 0.00001 0.029 0.0150 0.023 0.0119
6 Cree DC-076/008 0.238672 238,672 0.0025 0.0050 0.000016 0.00003 0 009 0.0179 0.004 0 0080
Cree DC-076/009 0.017465 17,465 0.0025 0.0004 0.000036 0.00001 0 0025 0.0004 0.0025 0.0004
7 Cree RTP DC-040/012 0.110764 110,764 0 0025 0.0023 0.000008 0.00001 0.0025 0.0023 0.0025 0.0023
8 TMC DC-023/001 0.000205 205 0.006 0.0000 0.000008 0.00000_ 0.0001 0.008 0.0000
9 Micross DC-085/001 0.039683 39,683 0 003 0.0010 0.000008 0 00000 0.0079 0.006 0.0020
10 Novan DC-084/001 0.000486 486 0.000054 0.00000__ 0.0000
11 PowerSecure DC-095/001 0
12 Phonomc DC-075/001 0.008158 8,158 0 000011 0.00000 0 002 0 0001 0.065 0 0044
13 SCM Metal DC-005/001 0.011336 11,336 0.0009 0.0001 0.000014 0.00000 0 001 0 0001 0.003 0 0003
14 United Therapeutics DC-053/001 0.033478 33,478 0 00001 0.00000 0.001 0.0003
Sum of Industrial Loading(lbs/day)_> 0.59611 596064 0.0206 I 0.00007 0.0447 0 0292
MGD gal/day mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day
Avg Influent loadmg(lbs/day)=>1 5.91 5,910,0001 0.00441 0.21691 0.000081 0 003941 0 00771 0.37951 0.00731 0.3598
Uncontrollable Load from Mass Bal(lbs/day)=> 5.3139 0 1962 0 00388 0.3348 0.3306
Uncontrollable Concen from Mass Bal(mg/L)_> I 0.00441 I0.000091 1 0 00761 1 0 00751
Uncont from Uncont. Sampling(mg/L+lbs/day)=> IL
Uncontrollable Concen From Literature(mg/L)=> ( 0.0491 1 0.00031I I I 0.0211
Uncontrollable conc.to be used in HWA One/L).---> 0.0044 0.00008 0.0076 0.0075
Spreadsheet Instructions
1)Applicable Values should be entered in the Heavy Bordered cells Rest of worksheet is Choose"Uncontrollable Concentration to be used in HWA"(row 31)from Uncontrollable Concentration
protected,password is"2" From "Mass Balance"(row 25),
2)Formulas are discussed in the Comprehensive Guidance,Chapter 5,Section E,page 5 "Sampling"(row 27),or"Literature"(row 29) Document reasons
Uncontrollable Mass Balance Spreadsheet 2017
SIU Uncont Mass Bal
Page 3 of 5 pages
3/8/2018,9 15 AM
Revision August 1999

SIU.Uncont.Mass.Bal
N FLOW SELENIUM SILVER ZINC TOTAL NITROGEN
INDUSTRY Industry Average Discharge Average Discharge Average Discharge Average Discharge Average Discharge
IUP NAMES Permit/Pipe Conc. Load Conc. Load Conc Load Conc. Load
Count (please list alphabetically) number MGD gal/day mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day
1 AstraZeneca DC-078/001 0 001592 1,592 _
2 Aurobmdo DC-089/001 0 000394 394 0 23 0 0008 90 3 0 2967
3 Biogen DC-080/001 0 071858 71,858 0 39 0 2337 7 6 4 5546
4 Braeburn DC-090/001 0
5 Cmtas DC-037/001 0 061973 61,973 0 005 0 0026 1 089 0 5629 37.9 19 5888
6 Cree DC-076/008 0 238672 238,672 0 005 0 0100 0 0025 0 0050 0.62 1 2341 26 51 7536
Cree DC-076/009' 0 017465 17,465 0 005 0 0007 0.0025 0.0004 0 49 0.0714
7 Cree RTP DC-040/012 0 110764 110,764 0.005 0 0046 0 683 0 6309 19 6 18 1059
8 JMC DC-023/001 0 000205 205 0 001 0.0000 0.093 0 0002 54 4 0 0930
9 Micross DC-085/001 0 039683 39,683 0 001 0 0003 0 414 0 1370 8 5 2 8131
10 Novan DC-084/001. 0.000486 486 0 001 0 0000 0 629 0 0025
1 - i
11 PowerSecure DC-095/001 0 _
12 Phonomc DC-075/001 0 008158 8,158
ii
13 SCM Metal DC-005/001 0 011336 11,336 0.001 0.0001 0.346 0 0327 15.3 1.4465
14 United Therapeutics DC-053/001 0.033478 33,478 0 491 0.1371 7 1 9544
Sum of Industrial Loadmg(lbs/day)=> 0 59611 596064 I 0 0154 0 0083 3 0433 I 100.6068
MGD gal/day mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day
Avg Influent loading(lbs/day)=> 5 91 5,910,000 0.00221 0 1084 0 00111 0 05421 0 43011 21 19941 42 38331 2089 0474
Uncontrollable Load from Mass Bal(lbs/day)=> 5 3139 0 0930 0 0460 18 1561 1,988 4406
Uncontrollable Concen from Mass Bal(mg/L)=> ( 0.00211 1 0 00101 I 0.40971 I 44.86731
Uncont.from Uncont Samplmg(mg/L+lbs/day)=>
Uncontrollable Concen From Literature(mg/L)_> I J I 0 0051 I 0.175 I
thicontt pliable cone to be used m Ii WA(mgiI)=> 0 0021 0 001 0.4094 44 9053
Spreadsheet Instructions
1)Applicable Values should be entered in the Heavy Bordered cells Rest of worksheet is Choose"Uncontrollable Concentration to be used in HWA"(row 31)from Uncontrollable
protected,password is"2" Concentration From "Mass Balance"(row 25),
2)Formulas are discussed in the Comprehensive Guidance,Chapter 5,Section E,page 5 "Sampling"(row 27),or"Literature"(row 29) Document reasons
Uncontrollable Mass Balance Spreadsheet 2017
SIU Uncont Mass Bal
Page 4 of 5 pages
3/8/2018,9 15 AM
Revision August 1999

SIU.Uncont.Mass.Bal
& �� FLOW TOTAL PHOSPHORUS CHLORIDE FLUORIDE COD
INDUSTRY Industry Average Discharge Average Discharge Average Discharge Average Discharge Average Discharge
IUP NAMES Permit/Pipe Conc Load Conc Load Conc Load Conc Load
Count (please list alphabetically) number MGD gal/day mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day
1 AstraZeneca DC-078/001 0 001592 1,592 27.4 0 3638
2 Aurobmdo DC-089/001 0 000394 394 10.02 0 0329 85 0 2793 1 05 0 0035 656 5 2 1572
3 Biogen DC-080/001 0.071858 71,858 1 44 0.8630 52.5 31 4630 0.92 0 5514 0.92 0.5514
4 Braebum DC-090/001 0 — ———5 Cmtas DC-037/001 0.061973 61,973 4 38 2.2638 107 9 55 7686 0.51 0 2636
6 Cree DC-076/008 0 238672 238,672 1 8 3 5829 211 420 0007 2 36 4 6976
Cree DC-076/009 0 017465 17,465 6 24 0 9089 77 3 11 2594 1 32 0 1923
7 Cree RTP DC-040/012 0.110764 110,764 2 34 2 1616 59 6 55 0568 1 45 1.3395
8 JMC DC-023/001 0 000205 205 0 41 0 0007 2607 4 4572 0 28 0 0005
9 Micross DC-085/001 0 039683 39,683 1 61 0 5328 19.1 6 3213 1 93 0 6387
10 Novan DC-084/001 0.000486 486 18.95 0 0768 ———— 805 3.2629
11 PowerSecure DC-095/001 0— ————
12 Phonomc DC-075/001 0 008158 8,158 ————
13 SCM Metal DC-005/001 0 011336 11,336 2 07 0.1957 22 5 2 1272 0 68 0 0643
14 United Therapeutics DC-053/001 0 033478 33,478 1 87 0.5221 80 2 22 3924 0 69 0 1927 223 5 62 4027
Sum of Industrial Loadmg(lbs/day)_> 0 5961 596064 11 1414 609.1258 7 9439 68.7379
MGD gal/day mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day
Avg Influent loading(lbs/day)_> 5.91 5,910,000 5 0726 250 0254. 90 4583 4,458 6353 0 8078 39 8160 I___
Uncontrollable Load from Mass Bal(lbs/day)=> 5 3139 238 8840 3,849 5095 31 8720 #VALUE'
Uncontrollable Concen from Mass Bal(mg/L)=> I 5 39021 I 86 86061 I 0 71921 I#VALUE'1
Uncont. from Uncont Sampling(mg/L+lbs/day)=> I ———
Uncontrollable Concen.From Literature(mg/L)=> I I I I I I I
Uncontrollable ronc to he used in HWA(mg/1.)—> 5 3951 86.8057 0 7178
Spreadsheet Instructions
1)Applicable Values should be entered in the Heavy Bordered cells Rest of worksheet is Choose"Uncontrollable Concentration to be used in HWA"(row 31)from Uncontrollable Concentration
protected,password is"2" From "Mass Balance"(row 25),
2)Formulas are discussed in the Comprehensive Guidance,Chapter 5,Section E,page 5 "Sampling"(row 27),or"Literature"(row 29) Document reasons
Uncontrollable Mass Balance Spreadsheet 2017
SIU Uncont Mass Bal
Page 5 of 5 pages
3/8/2018,9 15 AM
Revision August 1999

Average Effluent Flow
Sample Date Basis Flow
(MGD)
Janaury 2017 DMR 5 400
February 2017 DMR 6 107
March 2017 DMR 6 140
April 2017 DMR 6 000
May 2017 DMR 4 770
June 2017 DMR 4 650
July 2017 DMR 4 350
August 2017 DMR 4 200
September 2017 DMR 4 010
October 2017 DMR 3 850
November 2017 DMR 3 760
December 2017 DMR 3 561
Average 4 733

Effluent Flow
Sample Date Basis Flow
(MGD)
11/5/2012 DMR 5 10
2/5/2013 DMR 6 35
8/6/2013 DMR 5 24
5/6/2014 DMR 6 45
11/4/2014 DMR 5 53
5/5/2015 DMR 4 83
11/3/2015 DMR 7 03
2/9/2016 DMR 4 94
8/9/2016 DMR 6 37
5/9/2017 DMR 4 89
11/7/2017 DMR 3 98
2/6/2018 DMR 4 82
Average 5 46
Influent Flow
Sample Date Basis Flow
(MGD)
11/5/2012 DMR 6 70
2/9/2013 DMR 7 04
8/6/2013 DMR 5 65
5/6/2014 DMR 6 52
11/4/2014 DMR 5 74
5/5/2015 DMR 4 52
11/3/2015 DMR 7 20
2/9/2016 DMR 5 59
8/9/2016 DMR 6 29
5/9/2017 DMR 5 11
11/7/2017 DMR 4 64
2/6/2018 DMR 5 90
Average 5 91

P ?
TWWTP LTMP 2018
Influent Effluent Aeration Basin Sludge*
2/5-6/18 2/5-6/18 2/6/2018
Flow(MGD) 5 900 4 820
BODS(mg/1) 197 <2 0
TSS (mg/1) 188 <2 5
NH3(mg/1) 22 5 0 1
TN (mg/1) 35 9 7 45
TP(mg/1) 0 081 <0 020
Al(mg/1) _. 72 5
As(mg/I) <0 002 <0 002 0 02
Cd (mg/1) <0 00015 <0 00015 0 0026
Cr(mg/1) 0 004 0 002 0 049
Cu(mg/1) 0 04 0 004 0 695
CN(mg/I) <0 005 <0 005 0 035
Pb (mg/I) 0 0028 <0 0005 0 029
Hg(ng/1) 33.2 1.53 46 8
Mo(mg/I) 0 007 0 004
Ni(mg/1) 0 0051 0 0027 0 042
Ag(mg/I) <0 0005 <0 0005 0 0055
Se(mg/I) <0 005 <0 005
Zn(mg/1) 0 400 0 066 5 94
Chloride(mg/1) 82 69
Fluoride(mg/I) 0 71 0 56
Solids
Sludge to disposal
flow(MGD)
LL Hg 2/6/2018
* units in mg/kg

r
TWWTP LTMP 2017
Influent Effluent Aeration Basin Sludge*
5/8-9/17 11/6-7/17 5/8-9/17 11/6-7/17 5/9/2017 11/7/2017 11/7/2017
Flow(MGD) 5 110 4 640 4 890 3 980
BODS(mg/1) 164 253 2 5 2 4
TSS(mg/1) 176 344 <2 5 <2 5
NH3(mg/1) 28 30 <0 1 <0 1
TN (mg/1) 31 6 44 4 4 35 4 06
TP(mg/1) 5 16 6 92 <0 020 0 633
Al(mg/1) r 34 8 54 5
As(mg/1) <0 002 <0 002 <0 002 <0 002 0 008 0 005 <2 49
Cd(mg/1) <0 00015 <0 00015 <0 00015 <0 00015 0 0017 0 0015 0 95
Cr(mg/1) 0 004 0 005 <0 002 <0 002 0 030 0 026 17 2
Cu(mg/1) 0 038 0 056 0 003 0 002 0 44 0 586 277
CN(mg/1) <0 005 <0 005 <0 005 <0 005 <0 005 0 009
Pb(mg/I) 0 0016 0 0023 <0 0005 <0 0005 0 026 0 023 9
Hg(ng/1) 46.8 86 1.13 2.55 66 79 0 075
Mo(mg/1) 0 006 0 004 0 003 0 003 <1 24
Ni(mg/1) 0 006 0 0061 0 0028 0 0025 0 034 0 036 16 8
Ag(mg/1) <0 0005 0 0006 <0 0005 <0 0005 0 0031 0 0036
Se(mg/1) <0 002 <0 002 <0 002 <0 002 25 7
Zn(mg/I) 0 400 0 543 0 099 0 108 4 07 4 32 1900
Chloride(mg/I) 72 83 65 80
Fluoride(mg/1) 0 919 0 659 0 686 0 639
% Solids 20 1
w
Sludge to disposal
flow(MGD) 0 16
LL Hg 5/10/2017 11/7/2017
* units in mg/kg

TWWTP LTMP 2016
Influent Effluent Aeration Basin Sludge*
2/8-9/2016 8/8-9/2016 2/8-9/2016 8/8-9/2016 2/9/2016 8/9/2016 2/9/2016
Flow(MGD) 5 590 6 290 4 940 6 370
BODS(mg/1) 217 150 <2 2 6
TSS (mg/1) 180 160 2 5 <2 5
NH;(mg/1) 27 20 <0 1 <0 '1
TN(mg/1) 48 5 32 3 5 51
TP(mg/1) 5 26 3 73 0 215 0 392
Al(mg/1) 19 4 118
As(mg/1) <0 010 <0 002 <0 010 <0 002 <0 010 0 009 <2 89
Cd(mg/1) <0 002 0 00032 <0 002 <0 00015 0 004 0 0025 1 16
Cr(mg/1) <0 005 0 004 <0 005 0 002 0 037 0 043 16 5
Cu(mg/1) 0 039 0 042 0 002 0 004 0 951 0 746 260
CN(mg/1) 0 005 <0 005 <0 005 <0 005 <0 005 <0 005
Pb (mg/1) 0 021 0 0026 <0 010 <0 0005 0 075 0 047 14 9
Hg(ng/1) 95 4 25 4 2 44 1 22 108 118 0 116
Mo(mg/I) <0 005 0 006 <0 005 0 007 7 51
Ni(mg/I) 0 012 0 013 <0 010 0 0039 0 058 0 053 18 4
Ag(mg/1) <0 005 <0 0005 <0 005 <0 0005 0 007 0 0062
Se(mg/1) 0 010 <0 002 <0 010 <0 002 <2 89
Zn(mg/1) 0 463 0 343 0 053 0 053 1 42 6 42 2250
Chloride(mg/1) 299 65 56 60
Fluoride(mg/1) 0 79 0 893 0 6 0 809
%Solids 17 3
Sludge to disposal
flow(MGD) 0 05
LL Hg 2/10/2016 &8/8/2016
* units in mg/kg

TWWTP LTMP 2015
Influent Effluent Aeration Basin Sludge*
5/4-5/5/15 11/2-3/15 5/4-5/5/15 11/2-3/15 5/5/2015 11/3/2015 11/3/2015
Flow(MGD) 4 520 7 200 4 830 7 030
BODS(mg/1) 137 145 <2 <2
TSS (mg/1) 192 168 <2 5 <2 5
NH3(mg/1) 25 12 <0 1 <0 1
TN(mg/1) 33 9 24 3 4 01 2 98
TP(mg/1) 4 96 2 74 0 218 <0 020
Al(mg/1) 80 6 88 ,,
As(mg/1) <0 002 <0 002 <0 002 <0 002 0 011 0 009 <2 37
Cd(mg/1) <0 00015 <0 00015 0 00015 <0 00015 0 0034 0 0024 0 526
Cr(mg/1) 0 006 0 005 0 002 0 003 0 042 0 031 3 98
Cu(mg/1) 0 043 0 036 <0 002 0 003 0 813 0 653 57 3
CN(mg/1) <0 005 <0 005 <0 005 <0 005 <0 005 0 005
Pb (mg/1) 0 0021 0 0033 <0 0005 <0 0005 0 035 0 036 <2 37
Hg(ng/1) 150 85 8* 4.83 1 86* 1390 294* 0 142
Mo(mg/1) 0 010 0 004 0 007 0 004 9 86
Ni(mg/1) 0 013 0 0051 0 003 0 0031 0 072 0 043 6 26
Ag(mg/1) <0 0005 <0 0005 <0 0005 <0 0005 0 0059 0 0056
Se(mg/1) <0 002 <0 002 <0 002 <0 002 <2 37
Zn(mg/1) 0 463 0 368 0 078 0 118 8 52 4 91 151
Chloride(mg/1) 77 5 37 1 62 2 56 1
Fluoride(mg/l) 0 884 0 619 0 587 0 96
Solids 21 1
Sludge to disposal
flow(MGD) 0 065
LL Hg *Sampled 11/04/2015
* units in mg/kg

TWWTP LIMP 2014
Influent Effluent Aeration Basin Sludge*
5/5-5/6/14 11/3-11/4/14 5/5-5/6/14 11/3-11/4/14 5/6/2014 11/4/2014 5/6/2014
Flow(MGD) 6 520 5 740 6 450 5 530
BODS(mg/1) 106 116 3 2 <2
TSS(mg/I) 248 148 <2 5 <2 5
NH3(mg/1) 31 34 <0 1 0 11
TN(mg/1) 53 6 50 8 3 02 3 65
TP(mg/1) 6 76 6 05 0 024 0 203
Al(mg/I) 59 3 75 2
As(mg/1) <0 002 <0 010 <0 002 <0 010 0 0072 <0 010 <3 36
Cd(mg/1) <0 00015 <0 002 <0 00015 <0 002 0 0021 0 612 1 01
Cr(mg/I) 0 0036 <0 005 <0 002 <0 005 0 031 0 479 14 1
Cu(mg/1) 0 047 0 039 <0 002 <0 002 0 641 1 27 201
CN(mg/I) <0 005 <0 005 <0 005 <0 005 <0 005 <0 005
Pb(mg/1) 0 0018 <0 010 <0 0005 <0 010 0 021 2 43 7 72
Hg(ng/1) 83 1 70.5 1 05 <1 1138 2570 0 3
Mo (mg/1) 0 010 <0 005 0 0078 <0 0057 72
Ni(mg/1) 0 0052 <0 010 0 0024 <0 010 0 04 1 3 14 8
Ag(mg/1) 0 0011 <0 005 <0 0005 <0 005 0 0062 <0 005
Se(mg/I) <0 002 <0 010 <0 002 <0 010 <3 36
Zn(mg/1) 0 481 0 425 0 11 0 095 5 48 5 77 5 16
Chloride(mg/I) 77 3 65 8 65 6 79 2
Fluoride(mg/1) 0 8 0 62 0 6 0 39
%Solids 14 9
Sludge to disposal w T
flow(MGD) 0 305
LL Hg
* units in mg/kg

TWWTP LIMP 2013
Influent Effluent Aeration Basin Sludge*
2/5-6/2013 8/5-6/2013 2/4-5/2013 8/5-6/2013 2/5/2013 8/6/2013 9/17/2013
Flow(MGD) 7 040 5 650 6 350 5 240
BODS(mg/I) 158 245 2 4 <2
TSS(mg/1) 360 100 <5 <2 5
NH3(mg/1) 31 34 0 48 0 16
TN (mg/1) 53 9 47 6 1 61 5 1
TP(mg/1) 6 87 5 27 0 034 0 343
Al(mg/1) r 70 7 66 5 v
As(mg/1) <0 002 <0 002 <0 010 <0 002 <0 010 <0 010 <3 16
Cd(mg/1) 0 0002 <0 00015 <0 002 <0 00015 0 003 <0 002 0 797
Cr(mg/1) 0 0049 0 0032 <0 005 0 002 0 035 0 028 13 3
Cu(mg/I) 0 067 0 035 <0 002 0 003 0 614 0 507 211
CN(mg/1) <0 005 0 005 <0 005 <0 005 <0 005 <0 005
Pb(mg/1) 0 0027 0 0021 <0 010 <0 0005 0 033 0 033 10 3
Hg(ng/1) 12.6 114 <1 0 1.62 420 2040 0 38
Mo(mg/1) 0 019 0 014 0 014 0 098 13 6
Ni(mg/1) 0 0075 0 0047 <0 010 0 0031 0 041 0 031 13 6
Ag(mg/1) <0 0005 <0 005 <0 005 <0.0005 <0 005 <0 005
Se(mg/1) <0 002 0 002 <0 010 <0 002 3 16
Zn(mg/1) 0 582 0 36 0 085 0 112 5 21 3 76 1380
Chloride(mg/1) 88 85 81 1 80
Fluoride(mg/1) 1 1 2 0 8 0 8
%Solids - 15 8
Sludge to disposal W y
flow(MGD) : 0 1494
r r
LL Hg
* units in mg/kg

Q
TWWTP LIMP 2012
Influent Effluent Aeration Basin Sludge*
1/9-10/2012 2/20-21/2012 5/14-15/2012 11/5-6/2012 1/9-10/2012 2/20-21/2012 5/14-15/2012 11/5-6/2012 5/15/2012 11/6/2012 5/8/2012
Flow(MGD) 7 420 7 760 8 750 6 700 6 120 5 780 8 290 5 100
BODS(mg/I) 219 268 228 197 <2 <2 <2 <2
TSS(mg/1) 179 190 134 212 <2 5 <2 5 <2 5 <2 5
NH3(mg/1) 34 7 29 2 5 4 35 5 <0 1 0 1 <0 1 <0 1
TN(mg/1) 37 8 52 2 46 2 52 1 0 84 1 42 2 7 1 62
TP(mg/I) 7 3 6 91 5 41 7 07 0 089 0 174 0 344 0 039
Al(mg/I) 53 9 v 25••
As(mg/1) <0 002 <0 002 <0 002 <0 010 <0 002 <0 002 <0 002 <0 010 <0 002 <0 010 <3 16
Cd(mg/I) <0 00015 <0 00015 <0 0005 <0 002 <0 00015 <0 00015 <0 0005 <0 002 0 0022 0 003 5 06
Cr(mg/I) 0 004 0 004 0 0063 <0 005 <0 002 0 002 0 0048 <0 005 0 048 0 026 33 5
Cu(mg/1) 0 034 0 028 0 032 0 045 0 002 0 002 <0 002 <0 010 0 436 0 484 242
CN(mg/I) 0 006 <0 005 <0 005 <0 005 <0 005 0 005 <0 005 <0 005 <0 005 <0 005
Pb (mg/1) 0 003 0 002 0 0011 <0 010 <0 0005 <0 0005 <0 0005 <0 010 0 017 0 027 17 7
Hg(ng/1) 93 5 43 3 186 167 <1 1 2.37 <1 1380 1200 2 47
Mo(mg/1) 0019 0011 0016 0007 006 0032 0032 0063 146
Ni(mg/1) 0 004 0 004 0 004 <0 010 0 002 0 0020 0 0023 <0 010 0 034 0 03 18 7
°Ag(mg/I) 0 0007 <0 0005 <0 002 <0 005 <0 0005 <0 0005 <0 0005 <0 005 0 0059 <0 005
Se(mg/1) <0 002 <0 002 <0 0005 <0 010 <0 002 <0 002 <0 002 <0 010 <3 16
Zn(mg/1) 0 411 0 283 0 253 0 333 0 098 0 082 0 065 0 081 7 79 1 07 1840
Chloride(mg/1) 132 124 73 2 53 8 89 4 81 1 83 94 8
Fluoride(mg/1) 07 08 07 06 06 07 06 09
%Solids
-- . .. - . . ' Av 158
Sludge to disposal '�
flow(MGD)
025
r
LL Hg
* units in mg/kg

Ara
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
April 26, 2010 Received
APR 2 9 2010
Joseph R. Pearce, Jr., PE Durham County
Utility Division Manager/POTW Director Engineering Department
Durham County
120 E. Parrish Street, Law Bldg., First Floor
Durham,NC 27701
Subject: Pretreatment Review of Headworks Analysis (HWA) modification
Program: Durham County,NPDES #: NC0026051
WWTP: Durham County Triangle WWTP
Dear Mr. Pearce:
The Pretreatment, Emergency Response, and Collection Systems Unit (PERCS) of the Division of
Water Quality has reviewed the Headworks Analysis (HWA)modification request submitted by Durham
County. This submission was received by the Division on April 13, 2010.
The submission requested an increase in the Maximum Allowable Headworks Loading (MAHL) for
Total Phosphorus from 500 lbs/day, based on design criteria, to 650 lbs/day. The submission showed
that the increased loading could be achieved with the use of chemical phosphorus removal. The
Division concurs with the HWA calculations submitted. The HWA spreadsheets maintained in the
Division's database have been updated accordingly.
The next full HWA will be due April 1,2013, unless circumstances warrant an earlier submission.
Thank you for your continued support of the pretreatment program. If you have any questions or
comments, please contact Sarah Morrison at [phone] [email: [e-mail]] or
Deborah Gore,Unit Supervisor at 807-6383 [email: [e-mail]].
Sincerely
4A2
fbv Coleen H. Sullins
SM/durhamcounty hwa_006
Cc: Sarah Morrison,PERCS Unit -S
Central Files R2�2c,111
Cheng Zhang,Raleigh Regional Office
1617 Mail Service Center,Raleigh,North Carolina 27699-1617
Location 512 N Salisbury St Raleigh,North Carolina 27604 TyOne L, 1
Phone [phone] FAX [phone] PERCS Unit FAX [phone] Customer Service 1-877-623-6748. _ I �-�TorthCarohhna
Internet wwwA
ncwaterquality orq PERCS Unit http 11h20 enr state nc usIPERCS I t7i't,irn'//1/

. .
Kruger
TRIANGLE WASTEWATER TREATMENT FACILITY
DURHAM COUNTY, NORTH CAROLINA
OXIDATION DITCH DATA SHEET
GENERAL INFORMATION:
Plant Name and Location. Triangle Wastewater Treatment Facility(WWTF),Durham
County,NC
Kruger Project No . 42330006
Plant Capacity and Process. 12 MGD A2/0 Ditch with Secondary Anoxic Zones
Operating Since: 2005
Contact: Joe Pearce(919-560-7992)
Application. Municipal
#A'/O—Anaerobic/Anoxic/Oxic Ditch system for nitrification, denitr f cation, and P removal Secondary
Anoxic Zones incorporated for enhanced TN removal
INFLUENT & EFFLUENT DESIGN CHARACTERISTICS:
Influent Final Effluent
Average Daily Flow: 12 MGD
Peak Daily Flow: 36 MGD BOD <5.0 mg/L
BOD: 200 mg/L TSS: <5.0 mg/L
TSS. 180 mg/L NH3-N. <1.0 mg/L
TKN• 40 mg/L* TN. <2.75*mg/L
NH3-N 25 mg/L TP. <0 28* mg/L
TP: 5 mg/L
Alkalinity: Sufficient
Temperature(Min/Max). 10/30°C
* em:cal trim required �v
}S ?chit TSS cnt. �ncc A-0 . 00? m \-\\A °�Q c'U
PROCESS DESIGN DATA:
HRT: 27 hrs
MLSS (S/W). 2,500/3,500 mg/L
F M 0.10 lb BOD/1b MLSS-d
SRT. 14 days
Waste Sludge: 19,000 lb TSS/d
Sludge Yield 0 95 lb TSS/lb BOD
Installed Oxygen Capacity —2160 lb/hr
REV091208 ,c) )VEQUA
WATER
Solution•L-Tethroloo,e: