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 Table 1.1.10 Concentrations of Metals and Other Analytes in
First Flush Runoff Sample and Storm Rainfalla
Methodc
206.2
213.2
218.2
220.2
239.1
245.1
249.2
289.1
Other
Rainfall
Compoundsb
Site
As
CD
Cr
Cu
Pb
Hg
Ni
Zn
CR I
<10
<2
44
34
22
<0.2
38
220
ND
14.5
m
FM I
<10
5
12
25
20
<0.2
6
220
14.0
FM II
<10
<2
67
29
12
<0.2
11
473
ND
8.1
m
JY I
<10
<2
25
27
67
<0.2
<10
398
10.2
JY II
<10
4
23
97
330
0.4
34
678
ND
40.6
LF I
<10
<2
7
45
25
<0.2
<10
84
ND
6.4
a, b, p
LF II
<10
<2
12
16
12
0.2
20
792
35.6
MF I
<10
<2
73
57
100
<0.2
49
1051
ND
16.3
MF II
<10
6
15
29
41
<0.2
17
805
ND
19.8
PM I
<10
<2
10
11
7
<0.2
<10
60
ND
33.0
PM II
<10
<2
<5
5
<5
<0.2
<10
154
ND
22.9
t2, al
SR I
<10
<2
<5
110
37
<0.2
28
190
10.2
an, m
SR II
<10
10
170
530
660
3
78
2689
16.3
a
SR III
<10
5
28
99
59
<0.2
28
1797
13.7
TM I
<10
<2
<5
6
<5
0.3
<10
120
ND
7.6
t, t1, t2
TM II
<10
6
<5
7
24
<0.2
12
895
33.0
VM I
<10
<2
<5
5
<5
<0.2
<10
154
ND
10.2
e
VM II
<10
<2
16
120
34
<0.2
<10
219
8.1
WP I
330
<2
610
280
48
<0.2
<10
260
ND
33.0
WP II
140
<2
1700
780
150
<0.2
200
592
ND
33.0
Meand
24 + 77
2+3
141 + 382 116 + 194 82 + 151
0.2 + 0.7
26 + 45
593 + 638
19.3 +
Standardse
50
2
50
7 (A)
25
0.012
88
50 (A)
34
144
160
NURP
a
Metal concentrations in ppb; rainfall in mm; "<" indicates concentration below specified detection limit; ND indicates none
measured above
detection limits
b
Other compounds are: a, acetone; an, acrolein; al, aldrin; b, benzoic acid; e, endrin; m , methylene chloride; p, phenol; t,
tetrachloroethylene; t1, 1,1,1-trichloroethane; t2, trichloroethylene
c
US EPA, 1983a
d
Means + SD
e
North Carolina standards or action levels (A) for all fresh water
f
Median event mean concentrations from the Nationwide Urban Runoff Program (US EPA 1983b)
1.1-34
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