TPDES Stormwater Annual Report FY2021 TPDES Stormwater Annual Report FY2021 | Page 43

Metals data for the five ARB locations is included below .
RCT1B Chromium Copper Iron Lead Nickel Zinc
Oct-20
N / A
N / A
N / A
N / A
N / A
N / A
Nov-20
< 0.0045
0.0717
0.5302
< 0.0036
0.0077
< 0.0351
Dec-20
< 0.0045
0.1029
0.4612
< 0.0036
0.0054
0.0525
Jan-21
0.0147
0.0402
0.7053
0.0037
0.007
0.0639
Feb-21
0.0088
0.0415
0.5515
< 0.0036
0.0075
< 0.0351
Mar-21
< 0.0045
0.0764
1.031
0.0038
0.0035
0.0434
Apr-21
0.0174
0.1277
0.8964
0.0051
0.0142
0.1035
May-21
< 0.0045
0.0632
0.7533
0.0057
0.0074
0.053
Jun-21
< 0.0045
0.0577
1.036
< 0.0036
0.0037
< 0.0351
Jul-21
< 0.0045
0.0395
0.4348
< 0.0036
< 0.0032
< 0.0351
Aug-21
0.0238
0.06
21.46
0.0052
0.0161
12.6
Sep-21
< 0.0045
0.0207
0.3159
0.0014
< 0.0032
0.1065
RCT1B Metals FY21
Metals Concentration ( mg / L )
25 20 15 10 5 0
Oct-20 Nov-20 Dec-20 Jan-21 Feb-21 Mar-21 Apr-21 May-21 Jun-21 Jul-21 Aug-21 Sep-21
Chromium Copper Iron Lead Nickel Zinc
JC303 Chromium Copper Iron Lead Nickel Zinc
Oct-20
< 0.0045
0.085
2.332
0.0054
0.005
0.0519
Nov-20
< 0.0045
0.0934
0.7381
< 0.0036
0.0115
< 0.0351
Dec-20
< 0.0045
0.069
0.4035
< 0.0036
0.005
0.0521
Jan-21
0.0123
0.051
1.1
< 0.0036
0.0099
0.0714
Feb-21
0.016
0.0712
0.5697
0.0045
0.0151
0.0446
Mar-21
< 0.0045
0.0741
0.9373
< 0.0036
0.0059
0.0475
Apr-21
0.0138
0.1189
0.7476
< 0.0036
0.0194
0.0983
May-21
< 0.0045
0.0297
0.5943
< 0.0036
0.0088
0.0448
Jun-21
0.005
0.0732
0.5368
< 0.0036
0.0073
0.0351
Jul-21
< 0.0045
0.03
0.5862
0.0066
0.008
< 0.0351
Aug-21
0.0083
0.0804
2.917
0.0053
0.011
2.32
Sep-21
0.0061
0.0394
0.5225
0.003
0.0088
0.1264
JC303 Metals FY21
Metals Concentration
( mg / L )
4 3 2 1 0
Oct-20 Nov-20 Dec-20 Jan-21 Feb-21 Mar-21 Apr-21 May-21 Jun-21 Jul-21 Aug-21 Sep-21
Chromium Copper Iron Lead Nickel Zinc
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