Impact of chromated copper arsenate (CCA) in wood mulch

Townsend, Timothy G.; Solo‐Gabriele, Helena M.; Tolaymat, Thabet; Stook, Kristin

doi:10.1016/s0048-9697(03)00047-0

Cited by 51 publications

(31 citation statements)

References 19 publications

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“…Several studies have described the potential exposure hazards that CCA-treated wood may present directly or through a pathway of soil and water during the useful service or after disposal of the treated wood (Barraj et al 2007;Jartun et al 2003;Khan et al 2006a, b;Solo-Gabriel and Townsend 1999;Ursitti et al 2004;Wester et al 2004). CCA wood has also been inadvertently recycled as mulch or as landscape timbers in gardens where it contaminates soil and vegetables, or as firewood, which releases Cr, Cu, and As to the air, water and soil (McMahon et al 1986;Solo-Gabriel et al 2001;Stehouwer 2001;Townsend et al 2003).…”

Section: Stratification By City Core and Outer City Locationmentioning

confidence: 99%

Soil arsenic surveys of New Orleans: localized hazards in children’s play areas

Mielke

Gonzales

Cahn

et al. 2010

Environ Geochem Health

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Arsenic (As) ranks first on the 2005 and 2007 hazardous substances priority lists compiled for the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA). This study describes two New Orleans soil As surveys: (1) a survey of composite soil samples from 286 census tracts and (2) a field survey of soil As at 38 play areas associated with the presence of chromated-copper-arsenate (CCA)-treated wood on residential and public properties. The survey of metropolitan New Orleans soils revealed a median As content of 1.5 mg/kg (range <0.2-16.4) and no distinctive differences between the soils of the city core and outlying areas. Play area accessible soils associated with CCA-treated wood (N = 32) had a median As of 57 mg/kg and 78% of the samples were ≥12 mg/kg, the Louisiana soil As standard. The field survey of play areas for CCA-treated wood (N = 132 samples at 38 sites) was conducted with a portable energy-dispersive X-ray fluorescence (XRF) analyzer. Seventy-five of 132 wood samples (56.8%) were deemed CCA-treated wood. Of the 38 play areas surveyed, 14 (36.8%) had CCA-treated wood. A significant association (Fisher's exact p-value = 0.348 × 10(-6)) was found between CCA-treated wood and soil As (N = 75). At one elementary school CCA-treated woodchips (As range 813-1,654 mg As/kg) covered the playgrounds. The situation in New Orleans probably exists in play areas across the nation. These findings support a precautionary program for testing soils and wood for hazardous substances at all play areas intended for children.

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Section: Stratification By City Core and Outer City Locationmentioning

confidence: 99%

Soil arsenic surveys of New Orleans: localized hazards in children’s play areas

Mielke

Gonzales

Cahn

et al. 2010

Environ Geochem Health

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“…It may pose risks if wood recycling products such as mulch and CCA-treated wood boards are used, as these might release Cu, Cr and arsenic into the environment. Arsenic-release studies with CCAtreated wood surfaces (Stillwell et al 2003) and wood mulch (Townsend et al 2003) showed some, but not very toxicologically significant effects. However, the US EPA announced in early 2002 that the wood industry had voluntarily decided to eliminate arsenical wood preservatives just from residential applications by year-end 2003 (US EPA 2002b).…”

Section: Waste Products and Disposal Replacementmentioning

confidence: 91%

Arsenic

Stoeppler¹

2004

Elements and Their Compounds in the Environment

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“…Not only that in some locations polished wood chips have been used to cover playgrounds (called "mulch") which could become the object of children's chewing. 7) All together 360,000 metric tons of arsenics are imported into the US for the purpose of wood treatment, and therefore the total arsenics present in those woods are estimated to be substantial. The main argument against total banning of CCA-treatment is that in those treated woods arsenate actually forms a stable 2 to 1 complex with chromium (V) which is not likely to be readily available.…”

Section: Changing Social Attitudes Affecting Pesticide Safety Issuesmentioning

confidence: 99%

Contemporary Issues on Pesticide Safety

Matsumura

2004

J. Pestic. Sci.

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At any given moment there are always new issues on pesticide safety. Some of those issues are forced by the society based on the emergence of new threats, the changing attitude of the general public or complaints by action groups representing special interests of certain sub-populations. Others are the results of new scientific discoveries, technological development and/or introduction of new compounds. In this paper an effort has been made to analyze some of the recent issues from the viewpoint of categorizing them into several major types of safety issues in order to clarify the reason behind those issues, and thereby to assist the process of achieving the balance of effective use of pesticides and their safety.

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Impact of chromated copper arsenate (CCA) in wood mulch

Cited by 51 publications

References 19 publications

Soil arsenic surveys of New Orleans: localized hazards in children’s play areas

Soil arsenic surveys of New Orleans: localized hazards in children’s play areas

Arsenic

Contemporary Issues on Pesticide Safety

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