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Wastewater Characteristics 2011

 

Wastewater Treatment Plant NPDES Discharge Limitations 

 

Parameter Daily Min. Daily Max. Weekly Avg. Max. Monthly Avg. Max.
Dissolved Oxygen (mg/l) 5.4      
Oil and Grease (mg/l   10    
pH (S.U.) 6.5 9    
TSS (mg/l)     34.2 22.8
CBOD (5-day mg/l)     28.5 19
NH3 Summer (mg/l)     2.4 1.6
NH3 Winter (mg/l)     15.3 10.2
Fecal Coliform (#/100 ml)     2000 1000

 

Wastewater Treatment Plant Design Data

 

Parameter Design mg/l Design lbs./day Annual Daily Avg. mg/l Annual Daily Avg. lbs./day Lbs. % of Design
TSS 200 16,680 160 8,674 52
CBOD 220 18,384 159 8,619 47

 

 

 

Influent 2011 (Daily Avg.)

 

Month

Flow (MGD)

TSS (mg/l)

TSS (lbs/day)

CBOD (mg/l)

CBOD (lbs/day)

NH3 (mg/l)

NH3 (lbs/day)

Jan 4.626 183 7168 203 7799 19.1 769
Feb 6.861 153 7731 156 7625 16.0 743
Mar 7.333 136 7117 132 7444 13.7 659
Apr 10.764 105 6789 93 5805 10.0 590
May 8.392 131 7295 118 6409 10.9 606
Jun 5.207 179 7657 175 7246 17.7 725
Jul 4.498 187 7061 192 7238 18.0 702
Aug 3.958 216 7352 228 7730 22.6 746
Sep 4.976 190 7389 189 7358 17.4 693
Oct 5.418 183 7694 181 7522 15.6 651
Nov 7.690 135 6715 130 6336 11.1 537
Dec 8.607 123 6298 107 5438 10.8 512

 

Effluent 2011 (Daily Avg.)

 

Month

Flow (MGD)

TSS (mg/l)

TSS (lbs/day)

CBOD (mg/l)

CBOD (lbs/day)

NH3 (mg/l)

NH3 (lbs/day)

Fecal Coliform (#/100ml)

Jan 4.626 6 231 5 193 1.57 61  
Feb 6.861 10 572 8 458 5.21 298  
Mar 7.333 3 183 4 245 8.19 501  
Apr 10.764 6 539 5 449 0.94 84  
May 8.392 3 210 2 140 0.06 4 20
Jun 5.207 3 130 2 87 0.01 0.4 41
Jul 4.498 5 175 3 113 0.16 6 148
Aug 3.958 4 132 3 99 0.61 20 140
Sep 4.976 5 207 3 124 0.33 14 101
Oct 5.418 4 181 3 136 0.09 4 34
Nov 7.690 6 384 5 321 2.42 155  
Dec 8.607 6 431 6 431 3.93 282  

 

Effluent Metals 2011 (Daily Avg.)

 

Month

CN (mg/l)

Cd (ug/l)  Cr-T (ug/l) Cr-D (ug/l) Cu (ug/l Pb (ug/l)

(mg/l)

Zn (ug/l)

Hg (ng/l)

O&G (mg/l)

Jan AA AA AA AA 5.87 AA 3.30 32 2.3 AA
Feb AA AA AA AA AA AA 2.05 31.5 4.7 AA
Mar AA AA AA AA 4.18 AA 0.45 16.1 1.5 AA
Apr AA AA AA AA 7.62 0.53 2.90 41.7 1.7 AA
May AA AA AA AA 3.85 AA 0.87 17 2.5 AA
June AA AA AA AA 6.52 AA 3.48 34.5 1.0 AA
July AA AA AA AA 7.72 AA 3.04 39.8 7.3 AA
Aug 0.03 AA AA AA 9.17 AA 3.82 42.7 1.7 AA
Sep AA AA AA AA 9.47 AA 2.54 41.8 4.1 AA
Oct AA AA AA AA 10.2 AA 2.47 41.6 5.2 AA
Nov AA AA AA AA 7.02 AA 1.81 30.3 6.2 AA
Dec 0.01 AA AA AA 4.61 AA 0.53 11.2 1.8 AA

AA = Below Detection Limit