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Table 3

Bingham and Raeford mean and median pollutant concentrations and mean EMC percent concentration reduction

Pollutantinlet EMC (mg/L)outlet EMC (mg/L)Median conc. reduction (%)inlet EMC (mg/L)outlet EMC (mg/L)Mean conc. reduction (%)
Bingham 
TKN 0.55 0.55 − 1 0.74 0.63 15 
NO2,3 0.19 0.05 71 0.19 0.06 66* 
TN 0.74 0.57 24 0.93 0.69 26 
TAN 0.16 0.04 74 0.2 0.05 73* 
ON 0.42 0.54 − 27 0.54 0.57 6* 
OP 0.008 0.003 65 0.013 0.004 71* 
PBP 0.049 0.051 − 5 0.07 0.05 32^ 
TP 0.06 0.05 0.08 0.05 38* 
TSS 44 12 74 55 13 77* 
Raeford 
TKN 0.72 28 1.06 0.85 20^ 
NO2,3 0.24 0.1 58 0.25 0.11 57* 
TN 1.26 0.79 37 1.31 0.96 27* 
TAN 0.23 0.08 65 0.25 0.09 64* 
ON 0.74 0.63 15 0.81 0.76 
OP 0.064 0.027 58 0.072 0.033 55* 
PBP 0.12 0.1 15 0.13 0.11 11 
TP 0.23 0.13 42 0.2 0.15 28* 
TSS 50 14 73 56 24 58* 
Pollutantinlet EMC (mg/L)outlet EMC (mg/L)Median conc. reduction (%)inlet EMC (mg/L)outlet EMC (mg/L)Mean conc. reduction (%)
Bingham 
TKN 0.55 0.55 − 1 0.74 0.63 15 
NO2,3 0.19 0.05 71 0.19 0.06 66* 
TN 0.74 0.57 24 0.93 0.69 26 
TAN 0.16 0.04 74 0.2 0.05 73* 
ON 0.42 0.54 − 27 0.54 0.57 6* 
OP 0.008 0.003 65 0.013 0.004 71* 
PBP 0.049 0.051 − 5 0.07 0.05 32^ 
TP 0.06 0.05 0.08 0.05 38* 
TSS 44 12 74 55 13 77* 
Raeford 
TKN 0.72 28 1.06 0.85 20^ 
NO2,3 0.24 0.1 58 0.25 0.11 57* 
TN 1.26 0.79 37 1.31 0.96 27* 
TAN 0.23 0.08 65 0.25 0.09 64* 
ON 0.74 0.63 15 0.81 0.76 
OP 0.064 0.027 58 0.072 0.033 55* 
PBP 0.12 0.1 15 0.13 0.11 11 
TP 0.23 0.13 42 0.2 0.15 28* 
TSS 50 14 73 56 24 58* 

^Test of Significance was Wilcoxon Signed Rank.

Bolded values with a ‘*’ in the ‘Mean conc. Reduction’ column are significant at the α = 0.05 level. All statistical tests of significance were Student's t, unless otherwise noted.

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