Fairview Creek at its Headwaters, 2002-03

Quality Control Data 2002-03

The following data represent a comparison of student data versus lab data determined at a quality control lab. The comparison of student to quality control data allows the student to assess the relative accuracy of the tests shown below. The data from 10/23/01 and 4/15/02 compare the student data collected in the field to QC data from the field. The comparison of data on 4/10/02 represents student data determined after school on that date compared to a known standard. Data from 4/23/03 compares QC data determined at a

To learn how to calculate student data accuracy, click here!
Fairview Creek (Site FRV005- Cedar Park)

Test

10/23/01

(QC mean)

10/23/01

(student mean)

4/10/02

(QC mean)

4/10/02

(student mean)

4/15/02

(QC mean)

4/15/02

(student mean)

10/14 /03

(QC mean)

10/14 /03

(student mean)

4/23/03

(QC mean)

4/23/03

(student mean)

    

QCL Nitrate
-

-

0.171

0.07
-

-
2.20
2.2
-
-
    

QCH

Nitrate

1.05

0.4

0.853

0.47

1.60

3.68
-
-
-
-
    

QCL

Ammonia

0.19

0.18

0.197

0.07

0.08

0.072
<0.01
0.01
-
-
    

QCH Ammonia
-
-

0.39

0.60

-
-
-
-
-
    

Turbidity

1.48

1.72

-
-

1.67

1.61
0.95
1.15
2.58
2.66
    

Alkalinity (mg/L CaCO3)

60

63

-
-

50

63.25
75
72
-
-
    

pH
-
-

-
-

7.4

7.17
-
-
6.55
6.46
    
Dissolved Oxygen (mg/L)            
10.3
8.5
9.8
    
Dissolved Oxygen (% sat.)            
98
77.6
89
    

Phosphorus

(mg/L P)

            
0.20
0.23
-
0.43
    

E. Coli Bacteria

(CFU/100 mL)

            
610
-
193
-
    

 

Slichter