Document ID: chunk:federal_register_of_legislation:F2013C00288:reg:11:p6
Version: federal_register_of_legislation:F2013C00288
Segment Type: reg
Provision Reference: reg 11 (pt 6/6)
Character Range: 1783528–1784400

for urban residential/ public open space land uses ranged from 3575 mg added Cr (III)/kg for soils with a clay content from 1 to greater than 10%. The ACL values based on LOEC and EC30 and based on EC50 data were approximately 2 and 3 times larger than the NOEC-based ACLs. The ACLs for aged Cr (III) contamination were approximately 2.5 times larger than the corresponding ACLs for fresh contamination. The ACLs for Cr (III) based on NOEC and EC10 data are consistent with other internationally adopted Cr (III) SQGs. The ACL values based on LOEC and EC30 and on EC50 data are larger than the current international Cr (III) SQGs.

The superseded interim urban EIL for total Cr was 400 mg/kg. This is considerably higher than any of the SQGs for fresh Cr (III) by a factor of at least 2.6. The aged ACLs are essentially 2.5 times larger than the corresponding fresh ACLs.