 |
SRP
Community RelationsSite
Information ProgramHudson
Chromate ProjectTrivalent and Hexavalent Chromium
|
|
Trivalent and Hexavalent Chromium
Alternate formats for this document:
Excel
95/97 Version of this document
Soil Cleanup Criteria from 1993 to September
3, 1998
| EXPOSURE
PATHWAY |
TRIVALENT CHROMIUM |
HEXAVALENT
CHROMIUM |
| RESIDENTIAL
SCENARIO |
NONRESIDENTIAL
SCENARIO |
COMMENT |
RESIDENTIAL
SCENARIO |
NONRESIDENTIAL
SCENARIO |
COMMENT |
|
| ALLERGIC CONTACT DERMATITIS |
500 PPM |
500 PPM |
1 |
10 PPM |
10 PPM |
1 |
| 1 - |
Due to the acute nature of
this exposure pathway, the soil cleanup criteria for
the residential and nonresidential scenarios are the
same. |
Soil Cleanup Criteria Proposed September 18, 1998
| EXPOSURE
PATHWAY |
TRIVALENT
CHROMIUM |
| RESIDENTIAL
SCENARIO |
NONRESIDENTIAL
SCENARIO |
COMMENT |
|
| ALLERGIC CONTACT DERMATITIS |
NONE |
NONE |
1 |
| INHALATION |
NONE |
NONE |
2 |
| INGESTION |
120,000 PPM |
NOT REGULATED |
3 |
| IMPACT TO GROUND WATER |
NONE |
NONE |
1 |
| EXPOSURE
PATHWAY |
HEXAVALENT
CHROMIUM |
| RESIDENTIAL
SCENARIO |
NONRESIDENTIAL
SCENARIO |
COMMENT |
|
| ALLERGIC CONTACT DERMATITIS |
UNDER DEVELOPMENT |
UNDER DEVELOPMENT |
4,5 |
| INHALATION |
270 PPM |
20 PPM (PRELIMINARY) |
4,6 |
| INGESTION |
240 PPM |
6,100 PPM |
|
| IMPACT TO GROUND WATER |
SITE SPECIFIC |
SITE SPECIFIC |
5,7 |
| 1 - |
Under normal environmental conditions,
trivalent chromium is insoluble in water. Therefore,
exposure via this pathway is not relevant. |
| 2- |
Toxicological data for trivalent chromium
does not exist for this exposure pathway. Therefore,
soil cleanup criteria cannot be established. |
| 3- |
For the nonresidential scenario, ingestion
of trivalent chromium does not pose an unacceptable
risk. Therefore, a soil cleanup criterion is not proposed. |
| 4- |
Exposure models and assumptions have
been developed or are being finalized; generic soil
cleanup criteria are being developed. |
| 5- |
Soil cleanup criterion will be the same
for both the residential and nonresidential scenarios. |
| 6- |
Due to the effects of vehicular traffic,
the nonresidential scenario soil cleanup criterion will
be lower than the residential scenario soil cleanup
criterion. |
| 7- |
Due to highly variable soil conditions
throughout the State, it is not possible at this time
to develop a generic impact to ground water cleanup
criterion. |
|
|
