NCS000040_Page From Integrated Report 11-137-1_20180828

Final 2016 Integrated Report -All Assessed Waters
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Catawba River Subbasin
Catawba River Basin
Assessment Unit Name
Assessment Unit Description
Assessment Unit Number
Water Quality Classification Length/Area
Units
Irwin Creek
From source to Sugar Creek
11-137-1
C 11.8 FW Miles
Assessment Criteria Status
Reason for Rating Parameter of Interest
Category
Exceeding Criteria
> 10% and >90 conf Copper (7 µg/I, AL, FW)
5
Data Inconclusive
> 10% and < 90% conf Copper (7 µg/I, AL, FW)
3e
Exceeding Criteria
> 10% and < 90% conf Zinc (50 µg/I, AL, FW)
5e
Exceeding Criteria
> 10% and < 90% conf Lead (25 µg/l, AL, NC)
5e
Meeting Criteria
< 10% Nickel (88 pg/I, AL, FW)
1
(Meeting Criteria
< 10% pH (6 su, AL, FW)
1
Meeting Criteria
< 10% Cadmium (2 µg/I, AL, FW)
1
Meeting Criteria
< 10% __1 Cvater Temperature (329C, AL, LP&CP)
1
Meeting Criteria
< 10% FVlercury (0.012 µg/I, FC, FW)
1
Meeting Criteria
< 10% Arsenic (50 µg/I, AL, NC)
1t
Meeting Criteria
< 10% BOD
1t
Meeting Criteria
< 10% Turbidity (50 NTU, AL, FW miles)
1i
Meeting Criteria
< 10% pH (9.0, AL, FW)
1
Meeting Criteria
< 10% Total Suspended Solids
1t
Meeting Criteria
< 10% Dissolved Oxygen (4 mg/l, AL, FW)
1i
Meeting Criteria
< 10% Arsenic (10 µg/I, HH, NC)
J ��
Exceeding Criteria
Poor (Fish Community (Nar, AL, FW)
4s
Data Inconclusive
FCB AP GM>200 or >20% Fecal Coliform (GM 200/400, REC, FW)
4t
Data Inconclusive
Not assessed ] Iron (1000 µg/l, Natural, FW)
3z1
4/11/2018 2016 Integrated Report -All Assessed Waters Page 350 of 1306
Fish tissue assessments for mercury apply to all waters and are not individually listed