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].