Monitor Well No. BW-3
On-site: South of milling area near Duval Canal
Date |
Gross Alpha pc/l |
Gross Beta pc/l |
Radium 226 pc/l |
Radium 228 pc/l |
Radon* 222 pc/l |
Uranium 234 pc/l |
Uranium 235 pc/l |
Uranium 238 pc/l |
Total Uranium mg/l |
|||||
2/27/98 |
134 ± 13 |
56 ± 25 |
0.9 ± 0.6 |
3.1 ± 1.2 |
0.14 |
|||||||||
6/19/98 |
109 ± 7 |
23 ± 25 |
0.14 |
|||||||||||
9/24/98 |
97 ± 10 |
25 ± 24 |
1.6 ± .36 |
3.7 ± 0.7 |
0.14 |
|||||||||
12/7/98 |
87 ± 8 |
48 ± 24 |
0.14 |
|||||||||||
3/10/99 |
70 ± 21 |
56 ± 13 |
0.14 |
|||||||||||
6/14/99 |
40 ± 20 |
7.4 ± 13 |
0.0569 |
|||||||||||
4/5/00 |
110 ± 34 |
50 ± 18 |
0.131 |
|||||||||||
7/3/00 |
140 ± 35 |
49 ± 18 |
0.123 |
|||||||||||
11/8/00 |
44 ± 20 |
16 ± 13 |
0.0398 |
|||||||||||
7/11/01 |
21.2 ± 15 |
49.2 ± 18 |
0.143 |
|||||||||||
10/16/01 |
80.1 ± 23 |
42.7 ± 16 |
31.1 ± 2.1 |
1.29 ± .87 |
24.6 ± 2.1 |
0.116 |
||||||||
2/14/02 |
34.6 ± 18 |
34.6 ± 12 |
36.2 ± 3.9 |
0.86 ± 0.96 |
39 ± 4.1 |
0.132 |
||||||||
4/10/02 |
25.5 ± 16 |
26.9 ± 13 |
1.78 ± 0.3 |
2.82 ± 0.8 |
12.1 ± 2.3 |
1.75 ± 1.1 |
12.1 ± 2.4 |
0.0898 |
||||||
9/10/02 |
36.8 |
42.1 |
23.4 |
0.39 |
27.3 |
0.0799 |
||||||||
11/13/02 |
<6.68 |
52.2 |
<1.78 |
0.1 |
1.18 |
<0.0003 |
||||||||
1/22/03 |
61 |
52.2 |
43.2 |
1.13 |
44.2 |
0.174 |
||||||||
4/15/03 |
24.9 |
29.9 |
23.7 |
0.45 |
25.2 |
0.0735 |
||||||||
8/11/03 |
69.9 ± 3.8 |
51.5 ± 4.0 |
2.2 ± 0.5 |
ND |
4,280 ±101 |
22.4 ± 2.4 |
1.3 ± 0.6 |
22.3 ± 1.5 |
0.0878 |
|||||
11/12/03 |
98.6 ± 4.5 |
33.9 ±12.5 |
2.3 ± 0.7 |
ND |
15,600±140 |
36.9 ± 3.0 |
1.6 ± 0.6 |
35.6 ± 2.9 |
0.145 |
|||||
3/22/04 |
20.2 ± 5.3 |
24.1 ± 2.0 |
1.4 ± 0.4 |
1.7 ± 1.0 |
5,140± 95.5 |
7.9 ± 1.4 |
0.2 ± 0.2 |
8.9 ± 1.4 |
0.0306 |
|||||
MCLG** |
0 |
0 |
Ra-226+ -228 = 0 |
None |
None |
None |
None |
0 |
||||||
MCL*** |
15 pCi/l |
4 mrem/yr |
Ra-226+ -228 = 5 |
None |
None |
None |
None |
0.03 mg/l |
||||||
* Radon has no standard.
** Maximum Contaminant Level Goal, 40 C.F.R. § 141.55.
***Maximum Contaminant Levels, 40 C.F.R. § 141.66(b) [for Ra-226+-228]; (c) [for gross alpha activity]; (d) [for beta particle and [photon radioactivity]; and (e) [for uranium].