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Minnesota Administrative Rules

4761.2510 STANDARDS FOR LEAD IN PAINT, DUST, BARE SOIL, DRINKING WATER.

Subpart 1.

Paint.

Paint is lead-based if it:

A.

contains lead in a concentration of at least one-half of one percent (5,000 parts per million) or more by dry weight as measured by atomic absorption spectrophotometry or by quantitative chemical analyses; or

B.

registers at least one milligram of lead per square centimeter or more as measured by an x-ray fluorescence analyzer, unless atomic absorption spectrophotometry or quantitative chemical analyses shows that the lead content is less than one-half of one percent by dry weight.

Subp. 2.

Dust.

Dust is lead-contaminated if atomic absorption spectrophotometry or quantitative chemical analyses determines that it contains at least:

A.

40 micrograms of lead per square foot on an interior hard-surfaced floor or carpet;

B.

250 micrograms of lead per square foot on an interior window sill; or

C.

400 micrograms of lead per square foot in a window trough.

Subp. 3.

Bare soil.

Bare soil on an affected property or on a play area is lead-contaminated if it contains lead in a concentration of at least 1/100 of one percent (100 parts per million) by weight.

Subp. 4.

Drinking water.

Drinking water is lead-contaminated if it contains at least 15 micrograms of lead per liter of water.

Statutory Authority:

MS s 144.9508

History:

29 SR 531

Published Electronically:

November 29, 2004

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