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Clean Up standards Proposed for Meriton Site
NB Total Dioxins is now limited to 1.4 ppb but
this is still much higher than the ATSDR 1 ppb
action level, the Olympic 1 ppb level, the
proposed Dow Midland 831 p p trillion level and
the level off 200 pp trillion imposed by US EPA
Region 4.
| Chemical |
Residential |
Open
Space |
Note |
| Aldrin/dieldrin |
10 |
20 |
* |
| Chlordane/oxychlordane |
50 |
100 |
* |
| DDT/DDD |
200 |
400 |
* |
| Endrin |
120 |
240 |
|
| Heptachlor/H.epoxide |
10 |
20 |
* |
| Lindane |
350 |
700 |
|
| 2,4-D |
1,770 |
3,540 |
|
| 2,4,5-T |
5,300 |
10,600 |
|
| PAHs (total) |
20 |
40 |
* |
| Benzo(a)pyrene |
1 |
2 |
* |
| Combined
Dioxins/Furans (I-TEQ) |
0.0035 |
0.007 |
|
| 2, 3, 7,
8 – TCDD (I-TEQ) |
0.0028 |
0.0056 |
|
| p-chlorophenol |
530 |
1,060 |
|
| o- chlorophenol |
13,000 |
26,000 |
|
| 2,4-
dichlorophenol |
8,000 |
16,000 |
|
| 2,4,5-trichlorophenol |
17,700 |
35,400 |
|
| 2,4,6
trichlorophenol |
8,000 |
16,000 |
|
| Pentachlorophenol |
530 |
1,060 |
|
| 1,4-dichlorobenzene |
14,000 |
28,000 |
|
| 1,2,4,5-tetrachlorobenzene |
93 |
186 |
|
| Pentachlorobenzene |
9,300 |
18,600 |
|
| Hexachlorobenzene |
200 |
400 |
|
| PCBs (total) |
10 |
20 |
* |
| TPH (C6-C9)
Fractions |
65 |
65 |
** |
| TPH (C10-C36)
Fractions |
1,000 |
1,000 |
** |
| Petroleum
Hydrocarbon Components |
|
|
|
| C16-C35
(Aromatics) |
90 |
180 |
* |
| C16-C35 (Aliphatics) |
5,600 |
11,200 |
* |
| >C35 (Aliphatics) |
56,000 |
112,000 |
* |
| Benzene |
1 |
1 |
** |
| Toluene |
1.4 |
1.4 |
** |
| Ethylbenzene |
3.1 |
3.1 |
** |
| Xylenes (total) |
14 |
14 |
** |
| Arsenic (total) |
100 |
200 |
* |
| Cadmium |
20 |
40 |
* |
| Chromium (VI) |
100 |
200 |
* |
| Copper |
1,000 |
2,000 |
* |
| Lead |
300 |
600 |
* |
| Mercury
(inorganic) |
15 |
30 |
* |
| Nickel |
600 |
1,200 |
* |
| Zinc |
7,000 |
14,000 |
* |
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