Dislodgeable arsenic from CCA-treated lumber is transferred (likely via track-in) to the indoor environment.
Measuring transport of lawn-applied herbicide acids from turf to home: Correlation of dislodgeable 2, 4-D residues with carpet dust and carpet surface residues.
study did not include wipe analyses, data from other studies that did measure dislodgeable arsenic on wood structures from various geographic areas show consistent levels [ACC 2003 (samples collected from structures in Pennsylvania, Florida, and Georgia); CPSC 2003 (samples collected from structures in the Washington, DC, metropolitan area); Shalat et al.
EPA's current assessment overestimates children's potential exposure to dislodgeable arsenic from CCA-treated wood by up to 10-fold (U.
Dislodgeable Arsenic on Playground Equipment Wood and The Estimated Risk of Skin Cancer.
Determination of Dislodgeable Arsenic Transfer to Human Hands and Surrogates from CCA-Treated Wood.
Measuring transport of lawn-applied herbicide acids from turf to home: correlation of dislodgeable
2,4-D turf residues with carpet dust and carpet surface residues.
Average percentage recoveries for SRS 3,4-D in field samples were 90 [+ or -] 19 (n = 52) for cascade impactor samples; 91 [+ or -] 17 (n = 104) for URG air filter samples; 83 [+ or -] 20 (n = 172) for surface wipe samples; 88 [+ or -] 19 (n = 115) for floor dust samples; 86 [+ or -] 24 (n = 24) for surface dislodgeable residue PUF Roller samples.
The second scenario is a microactivity approach that combines the carpet surface dislodgeable residue loading from the PUF Roller with frequency rates for object-to-mouth and hand-to-mouth activities (17).
2]; Ent, Din, Kit adjacent to (as available) vacuum area Carpet surface dislodgeable 0.
Stilwell also measured dislodgeable arsenic from vertical playscape surfaces (poles) by direct hand contact and found the amounts removed ranged from 5 to 632 [micro]g/[cm.
With this possibility in mind, 10 years ago the Consumer Product Safety Commission (CPSC) conducted a series of tests to gauge the risks to children of contact with CCA-treated play sets and published the results in the 1990 report Estimate of Risk of Skin Cancer from Dislodgeable Arsenic on Pressure Treated Wood Playground Equipment.
Application Distribution type Time period type Deposited chlorpyrifos surface residue loadings Broadcast (target) < 1 day Lognormal 1-7 days Lognormal 8-30 days Lognormal Broadcast (nontarget) < 1 day Lognormal 1-7 days Lognormal 8-30 days Lognormal Crack and crevice < 1 day (target) Normal < 1 day (nontarget) Lognormal 1-7 days (target and Lognormal nontarget) 8-30 days (target Lognormal and nontarget) Dislodgeable chlorpyrifos surface residue loadings Turf Liquid broadcast < 1 day Normal 1-7 days Normal 8-30 days Normal Granular broadcast < 1 day Lognormal 1-7 days Uniform 8-30 days Uniform Mean or Application min, max type Time period (ng/[cm.
We back-calculated the distribution for deposited surface residue loadings at the target site 8-30 days postapplication from a distribution of the dislodgeable measurements for carpets from 15 to 93 days postapplication (29) and from the distribution for transfer efficiency from carpets.
Because deposited chlorpyrifos residues were reported by only one study (38) and because residue transfer efficiencies from turf are not available, we based dislodgeable turf residue loading distributions on the data reported by Vaccaro et al.