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Wastewater Characteristics 2012

 

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 2012 (Daily Avg.)

 

Month

Flow (MGD)

TSS (mg/l)

TSS (lbs/day)

CBOD (mg/l)

CBOD (lbs/day)

NH3 (mg/l)

NH3 (lbs/day)

Jan 7.427 170 10530 141 8734 12.1 749
Feb 5.276 227 9988 211 9284 17.6 774
Mar 5.192 247 10695 206 8920 16.6 719
Apr 4.842 216 8723 232 9369 18.5 747
May 6.837 181 10321 183 10435 15.1 861
Jun 4.526 210 7927 224 8455 23.8 898
Jul 4.073 201 6828 237 8051 15.5 527
Aug 3.808 205 6511 248 7876 21.9 696
Sep 4.263 186 6613 233 8284 17.4 619
Oct 4.166 192 6671 238 8269 18.9 657
Nov 4.044 206 6948 247 8331 16.4 553
Dec 5.028 173 7254 194 8135 19.6 822

 

Effluent 2012 (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 7.427 5 309 4 248 5.11 317  
Feb 5.276 4 176 3 132 5.67 249  
Mar 5.192 3 130 3 130 1.08 47  
Apr 4.842 2 81 2 81 0.31 13  
May 6.837 2 114 2 114 0.24 13.7 29
Jun 4.526 3 113 2 75 0.21 8 33
Jul 4.073 2 68 2 68 0.34 12 66
Aug 3.808 5 159 3 95 1.09 35 165
Sep 4.263 2 71 2 71 2.64 94 73
Oct 4.166 5 173 2 69 0.35 12 126
Nov 4.044 7 236 6 202 3.38 114  
Dec 5.028 11 461 11 461 2.82 118  

 

Effluent Metals 2012 (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 4.82 AA 1.02 AA 1.1 AA
Feb AA AA AA AA 4.46 AA 1.92 32.2 1.7 AA
Mar AA AA AA AA 9.09 AA 3.99 35.0 3.3 AA
Apr AA AA AA AA 6.35 AA 2.32 35.3 3.4 AA
May AA AA AA AA 4.44 0.67 1.37 19.0 2.5 AA
June AA AA AA AA 6.76 AA 2.13 30.7 4.2 AA
July 0.005 AA AA 0.48 9.5 0.33 1.97 45.0 4.8 AA
Aug AA AA AA AA 16.5 0.56 5.35 50.9 3.1 AA
Sep AA AA AA AA 9.43 AA 3.64 45.4 3.2 AA
Oct AA AA AA AA 11.2 AA 2.46 29.7 3.5 AA
Nov AA AA AA AA 7.31 AA 2.31 42.0 2.4 AA
Dec 0.009 AA AA AA 12.7 AA 1.86 56.5 3.4 AA

AA = Below Detection Limit