Table of Contents Table A1 - Peak Factors Used In Preparation Of Synthetic Database...1 Table A2 - Hourly Factors Used In Preparation Of Synthetic Database...2 Table A3 - Selected Wastewater Characteristics Used In Biowin Modeling....3 Table A4 - Selected Parameters Of Autotrophic Biomass....3 Table A5 - Selected Parameters Of Heterotrophic Biomass...3 Table A6 - Selected Fermentate Characteristics....3 Table A7 - Selected Parameters Of Fermentate Used In Modeling...4 Table A8 - Reported Vfa Generation In Side-Stream Prefermenters...5 Table A9 - Calculations Of Required Area Of Secondary Clarifiers For All Options...7 Figure A1 - Biowin Input For Option B Bnr/Mj No Side Treatment...8 Figure A2 - Biowin Input For Option C Bnr/Mj With Side Treatment...9 Figure A3 - Biowin Input For Option D - Hpo/Bnr/Mj With Side Treatment....10 Figure A4 - Biowin Input For Option I - Bnr/Mj And Hpo As Side Treatment....11 Figure A5 - Synthetic Flow Distribution In Design Year 2031 Spring Season...12 Figure A6 - Simulated Cod Load In Design Year 2031 Spring Season....13 Figure A7 - Simulated Cod Concentrations In Design Year 2031 Spring Season....14 Figure A8 - Simulated Tss Load In Design Year 2031 Spring Season....15 Figure A9 - Simulated Tss Concentrations In Design Year 2031 Spring Season...16 Figure A10 - Simulated Tkn Load In Design Year 2031 Spring Season...17 Figure A11 - Simulated Tkn Concentrations In Design Year 2031 Spring Season...18 Figure A12 - Simulated Tp Load In Design Year 2031 Spring Season...19 Figure A13 - Simulated Tp Concentrations In Design Year 2031 Spring Season....20 Figure A14 - Flow Vs Temperature In Spring 2031 Used In Dynamic Simulation....21 i
Figure A15 - Primary Clarifier Solids Overflow Rate And Hydraulic Residence Time And Daily Averages For Both Parameters (All Options)...22 Figure A16 - Option B Dynamic Modeling Results...23 Figure A17 - Option C Dynamic Modeling Results....24 Figure A18 - Option D Dynamic Modeling Results....25 Figure A19 - Option I Dynamic Modeling Results....26 Figure A20 - Option B Secondary Clarifier Solids Loading Rate And Surface Overflow Rate During Spring 2031...27 Figure A21 - Option C Secondary Clarifier Solids Loading Rate And Surface Overflow Rate During Spring 2031...28 Figure A22 - Option D Secondary Clarifier Solids Loading Rate And Surface Overflow Rate During Spring 2031...29 Figure A23 - Option I Secondary Clarifier (Bnr Plant Only) Solids Loading Rate And Surface Overflow Rate During Spring 2031....30 Figure A24 - Option I Secondary Clarifier (Hpo Plant Only) Solids Loading Rate And Surface Overflow Rate During Spring 2031....31 Figure A25 - Simulated Flows In Design Year 2031 Whole Year....32 Figure A26 - Simulated Tss Loads In Design Year 2031 Whole Year....33 Figure A27 - Simulated Cod Load In Design Year 2031 Whole Year....34 Figure A28 - Simulated Tkn Load In Design Year 2031 Whole Year...35 Figure A29 - Simulated Tp Load In Design Year 2031 Whole Year....36 ii
Table A1 - Peak Factors used in Preparation of Synthetic Database Flow factors Season Month Week Day Peak value Winter 1.00 1.02 1.06 1.07 1.16 Spring 1.30 1.25 1.29 1.57 3.27 Summer 1.30 1.48 1.35 1.69 4.39 Fall 1.15 1.17 1.13 1.27 1.93 Load factors - BOD Season Month Week Day Peak value Winter 1.00 1.35 1.25 1.34 2.26 Spring 1.25 1.56 1.24 1.13 2.74 Summer 1.12 1.40 1.68 1.18 3.10 Fall 1.06 1.35 1.12 1.03 1.66 Load factors - TSS Season Month Week Day Peak value Winter 1.00 1.66 1.22 1.37 2.78 Spring 1.47 1.68 1.27 1.16 3.63 Summer 1.36 1.55 1.52 1.48 4.70 Fall 1.06 1.62 1.17 1.08 2.19 Load factors - TKN Season Month Week Day Peak value Winter 1.00 1.17 1.16 1.07 1.45 Spring 1.02 1.26 1.16 1.08 1.61 Summer 0.92 1.20 1.16 1.13 1.43 Fall 0.97 1.18 1.04 1.01 1.20 Load factors - TP Season Month Week Day Peak value Winter 1.00 1.20 1.16 1.13 1.57 Spring 1.07 1.36 1.21 1.10 1.94 Summer 0.88 1.27 1.20 1.12 1.51 Fall 1.00 1.27 1.22 1.07 1.66 Example of calculation: Maximum week flow in summer = ADF x Flow factor for season x flow factor for month x flow factor for week = 68.4 x 1.30 x 1.48 x 1.35 = 177.6 MLD TSS load in maximum day in spring = ADF TSS load x Flow factor for season x flow factor for month x flow factor for week x flow factor for day = 17901.3 x 1.47 x 1.68 x 1.27 x 1.16 = 65128.8 kg/d 1
Table A2 - Hourly Factors used in Preparation of Synthetic Database Time Hourly Peak factors* hr Flow COD TSS TKN TP 0 1.06 1.089 1.018 0.927 0.942 1 0.99 0.911 0.844 0.848 0.864 2 0.90 0.732 0.671 0.768 0.787 3 0.72 0.647 0.606 0.721 0.715 4 0.63 0.563 0.541 0.673 0.644 5 0.58 0.478 0.476 0.626 0.572 6 0.53 0.521 0.511 0.749 0.665 7 0.53 0.564 0.546 0.872 0.757 8 0.67 0.607 0.581 0.995 0.850 9 0.79 0.706 0.688 1.096 0.938 10 0.96 0.804 0.796 1.198 1.027 11 1.17 0.903 0.903 1.299 1.115 12 1.32 0.934 0.944 1.244 1.130 13 1.24 0.966 0.985 1.188 1.145 14 1.25 0.997 1.026 1.133 1.160 15 1.21 1.146 1.163 1.112 1.170 16 1.16 1.296 1.300 1.092 1.180 17 1.15 1.445 1.437 1.071 1.190 18 1.14 1.473 1.480 1.092 1.194 19 1.18 1.500 1.524 1.114 1.198 20 1.19 1.528 1.567 1.135 1.202 21 1.22 1.441 1.442 1.092 1.141 22 1.22 1.355 1.316 1.050 1.080 23 1.17 1.268 1.191 1.007 1.019 * - Flow factors - based on SEWPCC instantaneous flow historical data; COD, TSS, TKN, TP factors based on diurnal study performed by Stantec in April 06 (values in bold from 3-hour composite samples, values not in bold estimated Example of calculation: Maximum week flow in summer at 3 pm = ADF x Flow factor for season x flow factor for month x flow factor for week x hourly flow factor = 68.4 x 1.30 x 1.48 x 1.35 x 1.21 = 214.9 MLD TSS load in maximum day in spring at 8 am = ADF TSS load x Flow factor for season x flow factor for month x flow factor for week x flow factor for day x hourly flow factor = 17901.3 x 1.47 x 1.68 x 1.27 x 1.16 x 0.581 = 37839.8 kg/d Note: Maximum day in spring and summer has peak hour factor of 1.6 2
Table A3 - Selected Wastewater Characteristics used in BioWin Modeling. Name Default Value Fbs - Readily biodegradable (including Acetate) [gcod/g of total COD] 0.2 0.18 Fac - Acetate [gcod/g of readily biodegradable COD] 0.15 0.27 Fxsp - Non-colloidal slowly biodegradable [gcod/g of slowly degradable COD] 0.75 0.75 Fus - Unbiodegradable soluble [gcod/g of total COD] 0.05 0.08 Fup - Unbiodegradable particulate [gcod/g of total COD] 0.13 0.18 Fna - Ammonia [gnh3-n/gtkn] 0.66 0.60 Fnox - Particulate organic nitrogen [gn/g Organic N] 0.5 0.64 Fnus - Soluble unbiodegradable TKN [gn/gtkn] 0 0.00 FupN - N:COD ratio for unbiodegradable part. COD [gn/gcod] 0.035 0.09 Fpo4 - Phosphate [gpo4-p/gtp] 0.5 0.63 FupP - P:COD ratio for influent unbiodegradable part. COD [gp/gcod] 0.011 0.01 FZbh - Non-poly-P heterotrophs [gcod/g of total COD] 1.00E-04 1.00E-04 FZbm - Anoxic methanol utilizers [gcod/g of total COD] 1.00E-04 1.00E-04 FZba - Autotrophs [gcod/g of total COD] 1.00E-04 1.00E-04 FZbp - PAOs [gcod/g of total COD] 1.00E-04 1.00E-04 FZbpa - Propionic acetogens [gcod/g of total COD] 1.00E-04 1.00E-04 FZbam - Acetoclastic methanogens [gcod/g of total COD] 1.00E-04 1.00E-04 FZbhm - H2-utilizing methanogens [gcod/g of total COD] 1.00E-04 1.00E-04 Table A4 - Selected Parameters of Autotrophic Biomass. Name Unit Default Value Arrhenius Max. spec. growth rate d -1 0.9 0.9 1.072 Aerobic decay rate d -1 0.17 0.17 1.029 Anoxic/anaerobic decay rate d -1 0.08 0.08 1.029 Table A5 - Selected Parameters of Heterotrophic Biomass. Name Unit Default Value Arrhenius Max. spec. growth rate d -1 3.2 3.2 1.029 Aerobic decay d -1 0.62 0.62 1.029 Anoxic/anaerobic decay d -1 0.3 0.3 1.029 Table A6 - Selected Fermentate Characteristics. Parameter Default Value Fbs - Readily biodegradable (including Acetate) [gcod/g of total COD] 0.2 0.8 Fac - Acetate [gcod/g of readily biodegradable COD] 0.15 0.5 Fxsp - Non-colloidal slowly biodegradable [gcod/g of slowly degradable COD] 0.75 0.75 Fus - Unbiodegradable soluble [gcod/g of total COD] 0.05 0.05 Fup - Unbiodegradable particulate [gcod/g of total COD] 0.13 0.13 Fna - Ammonia [gnh3-n/gtkn] 0.66 0.66 Fnox - Particulate organic nitrogen [gn/g Organic N] 0.5 0.5 Fnus - Soluble unbiodegradable TKN [gn/gtkn] 0 0 FupN - N:COD ratio for unbiodegradable part. COD [gn/gcod] 0.035 0.035 Fpo4 - Phosphate [gpo4-p/gtp] 0.5 0.5 FupP - P:COD ratio for influent unbiodegradable part. COD [gp/gcod] 0.011 0.011 3
Table A7 - Selected Parameters of Fermentate used in Modeling. Name Value Flow, m3/d 906 Total COD mg/l 4647 Total Kjeldahl Nitrogen mgn/l 80 Total P mgp/l 18 Nitrate N mgn/l 0 ph 7.3 Alkalinity mmol/l 6 Inorganic S.S. mgtss/l 60 Calcium mg/l 160 Magnesium mg/l 25 Dissolved oxygen mg/l 0 Detailed calculations of fermentate in design year 2031: Assumptions: average flow - Average TSS concentration Average TSS load = 90 MLD x 388 mg/l = 90.4 MLD 292 mg/l 26397 kg/d TSS load removed in primary clarifiers @70% removal (1995-2005 data showed 76% removal on average) = 0.7 x 26397 = 18478 kg/d Assuming 2% TS in sludge, primary sludge flow = 18478/ (1000 x 1.02 x 0.02) = 906 m3/d VSS/TSS ratio (2006 plant data suggest 0.815) = 0.80 VSS amount removed in primary clarifiers = 0.75 x 18478 kg/d = 14782 kg/d The reported range of VFA production in side-stream prefermenters is presented in Table A8. 4
Table A8 - Reported VFA Generation in Side-Stream Prefermenters Range, unit Reference 0.066 0.15 VFA-COD/g solids as COD Barnard, J., Shaw, A. et al. 2005 0.10 0.20 g VFA/g VSS applied Tchobanoglous, G., Burton, F. et al. 2003 15 70 mg VFA/L hour Rössle, W.H. and Pretorius, W.A. 2001 Calculated values of VFA generation: Method 1 According to recent study presented by (Wentzel, M.C., Ekama, G.A. et al. 2006) COD/VSS ratio for primary sludge varies between 1.58 to 1.93. It is assumed for the purpose of this report that 1 g VSS is equivalent to 1.75 g COD. VFA = 14782 kg VSS/d * 1.75 x 0.10 g VFA-COD/g VSS = 2587 kg VFA-COD/d Data compiled and presented by (Rössle, W.H. and Pretorius, W.A. 2001) summarized typical composition of VFA from prefermenters. According to that study on average 1.28 g VFA-COD was equivalent to 1 g VFA. Therefore: VFA = 2587 kg VFA-COD/d / 1.28 g VFA-COD/g VFA = 2021 kg VFA/d Method 2 VFA = 14782 kg VSS/d x 0.15 kg VFA/kg VSS = 2217 kg VFA/d Method 3 The rate of VFA generation is useful for determining the required tank volume. The most important parameter that determines tank volume is HRT. Reported range of HRT for sidestream prefermenters was in the range of 6 to 42 hours, with average between 15 to 18 hours (Rössle, W.H. and Pretorius, W.A. 2001). For the purpose of this report it is assumed that the average HRT of prefermentation process is 18 hours. VFA = 906 m3/d x 50 g/ m3 hour x 18 hours = 815 kg VFA/d Value of VFA calculated by method 3 differs significantly from values obtained through previous calculations. From operational perspective, it would be possible to increase VFA by extending the retention time in the fermenter. Also, it was reported that fermenter underflow contained approximately 1000 mg/l VFA as COD, and increased flow above desludging pipe allowed to elutriate desired VFA (Lindeke, D. and Barnard, J. 2005). Because of that, it was possible to increase VFA generation rate fourfold (from 50 mg/l to 200 mg/l VFA) in fermenter overflow. On the other hand, temperature was found to have a strong impact on the rate of VFA production. Drop in temperature from 20 o C to 10 o C was found to decrease the rate of VFA generation by approximately 50% (Barnard, J., Shaw, A. et al. 2005). Calculations by method 3 also reveal that proper design of the retention time in the fermenter will be of utmost importance for the successful operation of BNR plant in the cold climate of Winnipeg, MB. 5
Estimated amount of VFA for the purpose of modeling was the average value from three calculation methods used, that is 1684 kg VFA/d. Additionally, it was assumed the biodegradable fraction of fermenter supernatant is composed in 80% from readily biodegradable fraction of COD, out of which 50% is VFA see Table A6. That calculates to 4210 kg of COD/day in the fermenter supernatant or 4647 mg COD/L. 6
Table A9 - Calculations of Required Area of Secondary Clarifiers for all Options. Option B Option C Option D Option I BNR Option I HPO Design flow MLD 111 Max flow MLD 166.5 Average SOR m 3 /m 2 d 24 Max SOR m 3 /m 2 d 50 Area m2 8094 Area m2 5828 Recycle rate 1.75 Recycle rate 1.75 Average SLR kg/m 2 hr 6 Max SLR kg/m 2 hr 9 Assumed MLSS mg/l 4500 Assumed MLSS mg/l 4500 Area m2 6070 Area m2 6070 Design flow MLD 111 Max flow MLD 124.5 Average SOR m 3 /m 2 d 24 Max SOR m 3 /m 2 d 50 Area m2 8094 Area m2 4358 Recycle rate 1.75 Recycle rate 1.75 Average SLR kg/m 2 hr 6 Max SLR kg/m 2 hr 9 Assumed MLSS mg/l 4500 Assumed MLSS mg/l 4500 Area m2 6070 Area m2 4539 Design flow MLD 111 Max flow MLD 124.5 Average SOR m 3 /m 2 d 24 Max SOR m 3 /m 2 d 50 Area m2 8094 Area m2 4358 Recycle rate 1.75 Recycle rate 1.75 Average SLR kg/m 2 hr 6 Max SLR kg/m 2 hr 9 Assumed MLSS mg/l 4500 Assumed MLSS mg/l 4500 Area m2 6070 Area m2 4539 Desing flow MLD 86.7 Max flow MLD 103.5 Average SOR m 3 /m 2 d 24 Max SOR m 3 /m 2 d 50 Area m2 3613 Area m2 2070 Recycle rate 1.75 Recycle rate 1.75 Average SLR kg/m 2 hr 6 Max SLR kg/m 2 hr 9 Assumed MLSS mg/l 4500 Assumed MLSS mg/l 4500 Area m2 4741 Area m2 3773 Design flow MLD 24.3 Max flow MLD 80 Average SOR m 3 /m 2 d 24 Max SOR m 3 /m 2 d 50 Area m2 1013 Area m2 1600 Recycle rate 1.75 Recycle rate 1.75 Average SLR kg/m 2 hr 6 Max SLR kg/m 2 hr 9 Assumed MLSS mg/l 4500 Assumed MLSS mg/l 4500 Area m2 1329 Area m2 2917 7
Fermenter input Raw Sludge Existing Primary Clarifier Bypass at 166.5 MLD Pre-Anoxic Anaerobic Anoxic Aerobic Secondary Clarifier BNR Effluent Primary Sludge#1 WAS splitter Plant Efflu WAS Additional primary clarifiers Bypass Effluent Primary Sludge #2 Figure A1 - BioWin Input for Option B BNR/MJ No Side Treatment. 8
Fermenter input Raw Influent Existing clarifiers Pre-Anoxic Anaerobic Anoxic Aerobic Secondary Clarifier BNR Effluent WAS splitter Primary Sludge Bypass at 124.5 MLD WAS Plant Efflu New CEPT clarifiers Bypass effluent Alum addition Primary sludge #2 Figure A2 - BioWin Input for Option C BNR/MJ with Side Treatment. 9
Fermenter input Raw Influent Existing primary clarifier Bypass at 124.5 MLD Pre-Anoxic Anaerobic Anoxic HPO HPO vented Secondary clarifier BNR Effluen Primary Sludge WAS Splitter Plant Efflue BNR sludge New CEPT clarifiers Bypass efflu Alum addition CEPT sludge Figure A3 - BioWin Input for Option D - HPO/BNR/MJ with Side Treatment. 10
Fermenter input HPO MIN Flow 15 MLD Bypass at 103.5 MLD Raw Influent Existing primary clarifier Pre-Anoxic Anaerobic Anoxic Aerobic Secondary Clarifier BNR Effluent WAS splitter Primary sludge #1 Plant Efflu WAS Alum addition Bypass at 80 MLD Existing HPO system Existing HPO clarifier HPO Effluent Ideal primary settling tank64 HPO RAS splitter HPO sludge Primary sludge #2 ByPass Figure A4 - BioWin Input for Option I - BNR/MJ and HPO as Side Treatment. 11
400 350 300 250 Flow, MLD 200 150 100 50 0 3/1 3/8 3/15 3/22 3/29 4/5 4/12 4/19 4/26 5/3 5/10 5/17 5/24 5/31 Date, day/month/year 2031 Figure A5 - Synthetic Flow Distribution in Design year 2031 Spring Season. 12
140000 120000 100000 COD load, kg/day 80000 60000 40000 20000 0 1-Mar 8-Mar 15-Mar 22-Mar 29-Mar 5-Apr 12-Apr 19-Apr 26-Apr 3-May 10-May 17-May 24-May 31-May Date, day/month/year 2031 Figure A6 - Simulated COD Load in Design Year 2031 Spring Season. 13
800.00 700.00 600.00 COD concentration, mg/l 500.00 400.00 300.00 200.00 100.00 0.00 1-Mar 8-Mar 15-Mar 22-Mar 29-Mar 5-Apr 12-Apr 19-Apr 26-Apr 3-May 10-May 17-May 24-May 31-May Date, day/month/year 2031 Figure A7 - Simulated COD Concentrations in Design Year 2031 Spring Season. 14
120000 100000 80000 TSS load, kg/day 60000 40000 20000 0 1-Mar 8-Mar 15-Mar 22-Mar 29-Mar 5-Apr 12-Apr 19-Apr 26-Apr 3-May 10-May 17-May 24-May 31-May Date, day/month/year 2031 Figure A8 - Simulated TSS Load in Design Year 2031 Spring Season. 15
600.00 500.00 400.00 TSS concentration, mg/l 300.00 200.00 100.00 0.00 1-Mar 8-Mar 15-Mar 22-Mar 29-Mar 5-Apr 12-Apr 19-Apr 26-Apr 3-May 10-May 17-May 24-May 31-May Date, day/month/year 2031 Figure A9 - Simulated TSS Concentrations in Design Year 2031 Spring Season. 16
8000 7000 6000 5000 TKN load, kg/day 4000 3000 2000 1000 0 1-Mar 8-Mar 15-Mar 22-Mar 29-Mar 5-Apr 12-Apr 19-Apr 26-Apr 3-May 10-May 17-May 24-May 31-May Date, day/month/year 2031 Figure A10 - Simulated TKN Load in Design Year 2031 Spring Season. 17
70.00 60.00 50.00 TKN concentration, mg/l 40.00 30.00 20.00 10.00 0.00 1-Mar 8-Mar 15-Mar 22-Mar 29-Mar 5-Apr 12-Apr 19-Apr 26-Apr 3-May 10-May 17-May 24-May 31-May Date, day/month/year 2031 Figure A11 - Simulated TKN Concentrations in Design Year 2031 Spring Season. 18
1400 1200 1000 TP load, kg/day 800 600 400 200 0 1-Mar 8-Mar 15-Mar 22-Mar 29-Mar 5-Apr 12-Apr 19-Apr 26-Apr 3-May 10-May 17-May 24-May 31-May Date, day/month/year 2031 Figure A12 - Simulated TP Load in Design Year 2031 Spring Season. 19
12.00 10.00 8.00 TP concentration, mg/l 6.00 4.00 2.00 0.00 1-Mar 8-Mar 15-Mar 22-Mar 29-Mar 5-Apr 12-Apr 19-Apr 26-Apr 3-May 10-May 17-May 24-May 31-May Date, day/month/year 2031 Figure A13 - Simulated TP Concentrations in Design Year 2031 Spring Season. 20
400 15 350 300 250 200 150 100 50 0 22-Feb 1-Mar 8-Mar 15-Mar 22-Mar 29-Mar 5-Apr 12-Apr 19-Apr 26-Apr 3-May 10-May 17-May 24-May 31-May 7-Jun Flow, MLD Flow Temperature Daily average flow 13 11 9 7 5 3 Temperature, Celsius 1-1 Date, day/month/year 2031 Figure A14 - Flow VS Temperature in Spring 2031 used in Dynamic Simulation. 21
75 BioWin Chart 70 65 60 SOR (m3/m2 d) and HRT (h) 55 50 45 40 35 30 25 20 15 10 5 0 3/1/2031 3/8/2031 3/15/2031 3/22/2031 3/29/2031 4/5/2031 4/12/2031 4/19/2031 4/26/2031 DATE 5/3/2031 5/10/2031 5/17/2031 5/24/2031 Existing Primary Clarifier Hydraulic residence time HRT - daily average Existing Primary Clarifier Surface overflow rate SOR - daily average Figure A15 - Primary Clarifier Solids Overflow Rate and Hydraulic Residence Time and Daily Averages for Both Parameters (all options). 22
BioWin Chart 28 26 24 22 20 CONC (mg/l) 18 16 14 12 10 8 6 4 2 3/1/2031 3/8/2031 3/15/2031 3/22/2031 3/29/2031 4/5/2031 4/12/2031 4/19/2031 4/26/2031 DATE 5/3/2031 5/10/2031 5/17/2031 5/24/2031 Plant Effluent Total suspended solids Plant Effluent Total Carbonaceous BOD Plant Effluent Total P Plant Effluent Total N Figure A16 - Option B Dynamic Modeling Results. 23
BioWin Chart 75 70 65 60 55 CONC (mg/l) 50 45 40 35 30 25 20 15 10 5 0 3/1/2031 3/8/2031 3/15/2031 3/22/2031 3/29/2031 4/5/2031 4/12/2031 4/19/2031 4/26/2031 DATE 5/3/2031 5/10/2031 5/17/2031 5/24/2031 Plant Effluent Total suspended solids Plant Effluent Total Carbonaceous BOD Plant Effluent Total P Plant Effluent Total N Figure A17 - Option C Dynamic Modeling Results. 24
BioWin Chart 75 70 65 60 55 CONC (mg/l) 50 45 40 35 30 25 20 15 10 5 3/1/2031 3/8/2031 3/15/2031 3/22/2031 3/29/2031 4/5/2031 4/12/2031 4/19/2031 4/26/2031 DATE 5/3/2031 5/10/2031 5/17/2031 5/24/2031 5/31/2031 Plant Effluent Total P Plant Effluent Total suspended solids Plant Effluent Total Carbonaceous BOD Plant Effluent Total N Figure A18 - Option D Dynamic Modeling Results. 25
55 BioWin Chart 50 45 40 CONC (mg/l) 35 30 25 20 15 10 5 0 3/1/2031 3/8/2031 3/15/2031 3/22/2031 3/29/2031 4/5/2031 4/12/2031 4/19/2031 4/26/2031 DATE 5/3/2031 5/10/2031 5/17/2031 5/24/2031 Plant Effluent Total suspended solids Plant Effluent Total Carbonaceous BOD Plant Effluent Total P Plant Effluent Total N Figure A19 - Option I Dynamic Modeling Results. 26
BioWin Chart 170 160 150 SLR (kg/m2 d) and SOR (m3/m2 d) 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 3/1/2031 3/8/2031 3/15/2031 3/22/2031 3/29/2031 4/5/2031 4/12/2031 4/19/2031 4/26/2031 DATE 5/3/2031 5/10/2031 5/17/2031 5/24/2031 Secondary Clarifier Solids loading rate Secondary Clarifier Surface overflow rate Figure A20 - Option B Secondary Clarifier Solids Loading Rate and Surface Overflow Rate During Spring 2031. 27
150 BioWin Chart 140 130 SLR (kg/m2 d) and SOR (m3/m2 d) 120 110 100 90 80 70 60 50 40 30 20 10 0 3/1/2031 3/8/2031 3/15/2031 3/22/2031 3/29/2031 4/5/2031 4/12/2031 4/19/2031 4/26/2031 DATE 5/3/2031 5/10/2031 5/17/2031 5/24/2031 Secondary Clarifier Solids loading rate Secondary Clarifier Surface overflow rate Figure A21 - Option C Secondary Clarifier Solids Loading Rate and Surface Overflow Rate During Spring 2031. 28
BioWin Chart 180 170 160 SLR (kg/m2 d) and SOR (m3/m2 d) 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 03/01/31 03/08/31 03/15/31 03/22/31 03/29/31 04/05/31 04/12/31 04/19/31 04/26/31 05/03/31 05/10/31 05/17/31 05/24/31 DATE Secondary clarifier Solids loading rate Secondary clarifier overflow rate Figure A22 - Option D Secondary Clarifier Solids Loading Rate and Surface Overflow Rate During Spring 2031. 29
BioWin Chart 140 130 SLR (kg/m2 d) and SOR (m3/m2 d) 120 110 100 90 80 70 60 50 40 30 20 10 0 3/1/2031 3/8/2031 3/15/2031 3/22/2031 3/29/2031 4/5/2031 4/12/2031 4/19/2031 4/26/2031 DATE 5/3/2031 5/10/2031 5/17/2031 5/24/2031 Secondary Clarifier Solids loading rate Secondary Clarifier Surface overflow rate Figure A23 - Option I Secondary Clarifier (BNR plant only) Solids Loading Rate and Surface Overflow Rate During Spring 2031. 30
BioWin Chart 160 150 140 SLR (kg/m2 d) and SOR (m3/m2 d) 130 120 110 100 90 80 70 60 50 40 30 20 10 0 3/1/2031 3/8/2031 3/15/2031 3/22/2031 3/29/2031 4/5/2031 4/12/2031 4/19/2031 4/26/2031 DATE 5/3/2031 5/10/2031 5/17/2031 5/24/2031 Existing HPO clarifier Solids loading rate Existing HPO clarifier Surface overflow rate Figure A24 - Option I Secondary Clarifier (HPO plant only) Solids Loading Rate and Surface Overflow Rate During Spring 2031. 31
500 450 400 350 300 Flow, MLD 250 200 150 100 50 0 12/1 12/15 12/29 1/12 1/26 2/9 2/23 3/9 3/23 4/6 4/20 5/4 5/18 6/1 6/15 6/29 7/13 7/27 8/10 8/24 9/7 9/21 10/5 10/19 11/2 11/16 11/30 Date, day/month/year 2031 Figure A25 - Simulated Flows in Design Year 2031 Whole Year. 32
140000 120000 100000 TSS load, kg/day 80000 60000 40000 20000 0 1- Dec 15- Dec 29- Dec 12- Jan 26- Jan 9- Feb 23- Feb 9- Mar 23- Mar 6- Apr 20- Apr 4- May 18- May 1- Jun 15- Jun 29- Jun 13- Jul 27- Jul 10- Aug 24- Aug 7- Sep 21- Sep 5- Oct 19- Oct 2- Nov 16- Nov 30- Nov Date, day/month/year 2031 Figure A26 - Simulated TSS Loads in Design Year 2031 Whole Year. 33
160000 140000 120000 100000 COD load, kg/day 80000 60000 40000 20000 0 1- Dec 15- Dec 29- Dec 12- Jan 26- Jan 9- Feb 23- Feb 9- Mar 23- Mar 6- Apr 20- Apr 4- May 18- May 1- Jun 15- Jun 29- Jun 13- Jul 27- Jul 10- Aug 24- Aug 7- Sep 21- Sep 5- Oct 19- Oct 2- Nov 16- Nov 30- Nov Date, day/month/year 2031 Figure A27 - Simulated COD Load in Design Year 2031 Whole Year. 34
8000 7000 6000 5000 TKN load, kg/day 4000 3000 2000 1000 0 1- Dec 15- Dec 29- Dec 12- Jan 26- Jan 9- Feb 23- Feb 9- Mar 23- Mar 6- Apr 20- Apr 4- May 18- May 1- Jun 15- Jun 29- Jun 13- Jul 27- Jul 10- Aug 24- Aug 7- Sep 21- Sep 5- Oct 19- Oct 2- Nov 16- Nov 30- Nov Date, day/month/year 2031 Figure A28 - Simulated TKN Load in Design Year 2031 Whole Year. 35
1400 1200 1000 TP load, kg/day 800 600 400 200 0 1- Dec 15- Dec 29- Dec 12- Jan 26- Jan 9- Feb 23- Feb 9- Mar 23- Mar 6- Apr 20- Apr 4- May 18- May 1- Jun 15- Jun 29- Jun 13- Jul 27- Jul 10- Aug 24- Aug 7- Sep 21- Sep 5- Oct 19- Oct 2- Nov 16- Nov 30- Nov Date, day/month/year 2031 Figure A29 - Simulated TP Load in Design Year 2031 Whole Year. 36