TPDES Stormwater Annual Report FY2019 | Page 154

Analytical Results Summary NCTCOG Regional Stormwater Monitoring Program NCTCOG Project 100063022 CITY OF ARLINGTON 2018
Storm Event : 11 / 08 / 2018
AR 1801A
AR 1802
Project Number : 100063022 PARAMETER NAME
COMPOSITE
COMPOSITE
UNIT
Total Dissolved Solids ( TDS )
442
N / A
mg / L
Total Suspended Solids ( TSS )
23.1
N / A
mg / L
Biochemical Oxygen Demand ( BOD )
< 2 U
N / A
mg / L
Chemical Oxygen Demand ( COD )
< 15 U
N / A
mg / L
Total Nitrogen
1.10
N / A
mg / L
Nitrate N
0.59 J
N / A
mg / L
Ammonia N
0.061
N / A
mg / L
Orthophosphate
< 0.05 U
N / A
mg / L
Phosphorus , Dissolved
< 0.050 U
N / A
mg / L
Phosphorus , Total
< 0.050 U
N / A
mg / L
Atrazine
< 0.100 U
N / A
μg / L
Arsenic , Total
< 0.002 U
N / A
mg / L
Chromium , Total
< 0.004 U
N / A
mg / L
Copper , Total
0.00478
N / A
mg / L
Lead , Total
0.00425
N / A
mg / L
Zinc , Total
0.034
N / A
mg / L
PARAMETER NAME
GRAB
GRAB
UNIT
Oil & Grease ( HEM )
7.92
N / A
mg / L
pH
8.3
N / A
su
Ambient Air Temperature ( field )
54
N / A
° F
Water Temperature ( field )
59.0
N / A
° F
E . Coli
600.0
N / A
col / 100 mL
Specific Conductivity
1009
N / A
μS / cm
">" - Not Identified Above the Upper Detection Limit "<" - Not Identified Below the Lower Detection Limit J - Positively Identified Below the Lower Detection Limit NST - No Sample Taken U - Undetected