Dust Lead Standards
Evaluation method | Surface | ||
Floors, [MICRO]g/ft2 (mg/m2) | Interior window sills, [MICRO]g/ft2 (mg/m2) | Window troughs, [MICRO]g/ft2 (mg/m2) | |
Risk Assessment | 40 (0.43) | 250 (2.7) | Not Applicable. |
Lead Hazard Screen | 25 (0.27) | 125 (1.4) | Not Applicable. |
Reevaluation | 40 (0.43) | 250 (2.7) | Not Applicable. |
Clearance | 40 (0.43) | 250 (2.7) | 400 (4.3). |
Note 1: "Floors" includes carpeted and uncarpeted interior floors.
Note 2: A dust-lead hazard is present or clearance fails when the weighted arithmetic mean lead loading for all single-surface or composite samples is equal to or greater than the applicable standard. For composite samples of two to four subsamples, the standard is determined by dividing the standard in the table by one half the number of subsamples. See EPA regulations at 40 CFR 745.63 and 745.227(h)(3)(i) .
24 C.F.R. §35.1320