Polycyclic Aromatic Hydrocarbons in Stormwater Runoff from Sealcoated Pavements

Watts, Alison; Ballestero, Thomas P.; Roseen, Robert M.; Houle, James P.

doi:10.1021/es102059r

Cited by 62 publications

(38 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Prior studies have determined various routes of PAH loss from sealcoated pavement, including volatilization, 5,40 runoff, 36 and abrasion, 3 among others. 6 …”

Section: Resultsmentioning

confidence: 99%

Identification and Toxicological Evaluation of Unsubstituted PAHs and Novel PAH Derivatives in Pavement Sealcoat Products

Titaley

Chlebowski

Truong

et al. 2016

Environ. Sci. Technol. Lett.

View full text Add to dashboard Cite

Pavement sealcoat products contain high concentrations of unsubstituted polycyclic aromatic hydrocarbons (PAHs), but the assessment of the potential toxicological impact is limited without the inclusion of PAH derivatives. This study determined the concentrations of 23 unsubstituted PAHs, 11 high molecular weight-PAHs (MW302-PAHs), and 56 PAH derivatives, including 10 methyl-PAHs (MPAHs), 10 heterocyclic-PAHs (Hetero-PAHs), 26 nitrated-PAHs (NPAHs), and 10 oxygenated-PAHs (OPAHs) in coal-tar and asphalt based sealcoat products and time point scrapes. Inclusion of MW302-PAHs resulted in an increase of 4.1–38.7% in calculated benzo[a]pyrene-carcinogenic equivalent (B[a]Peq) concentrations for the coal-tar based products. Increases in some NPAH and OPAH concentrations were measured after application, suggesting the possibility of photochemical transformation of unsubstituted PAHs. The Ames assay indicated that the asphalt based product was not mutagenic, but the coal-tar based sealcoat products were. The zebrafish developmental toxicity tests suggested that fractions where NPAHs and OPAHs eluted have the most significant adverse effects.

show abstract

“…Prior studies have determined various routes of PAH loss from sealcoated pavement, including volatilization, 5,40 runoff, 36 and abrasion, 3 among others. 6 …”

Section: Resultsmentioning

confidence: 99%

Identification and Toxicological Evaluation of Unsubstituted PAHs and Novel PAH Derivatives in Pavement Sealcoat Products

Titaley

Chlebowski

Truong

et al. 2016

Environ. Sci. Technol. Lett.

View full text Add to dashboard Cite

show abstract

“…11 Higher wear rates have been noted in a cold-weather climate. 7 The mobilized sealcoat particles and associated PAHs are transported to various environmental compartments (Figure 1, Table 1). …”

Section: Introductionmentioning

confidence: 99%

Coal-Tar-Based Pavement Sealcoat and PAHs: Implications for the Environment, Human Health, and Stormwater Management

Mahler

Metre

Crane

et al. 2012

Environ. Sci. Technol.

Self Cite

View full text Add to dashboard Cite

Coal-tar-based sealcoat products, widely used in the central and eastern U.S. on parking lots, driveways, and even playgrounds, are typically 20−35% coal-tar pitch, a known human carcinogen that contains about 200 polycyclic aromatic hydrocarbon (PAH) compounds. Research continues to identify environmental compartments—including stormwater runoff, lake sediment, soil, house dust, and most recently, air—contaminated by PAHs from coal-tar-based sealcoat and to demonstrate potential risks to biological communities and human health. In many cases, the levels of contamination associated with sealed pavement are striking relative to levels near unsealed pavement: PAH concentrations in air over pavement with freshly applied coal-tar-based sealcoat, for example, were hundreds to thousands of times higher than those in air over unsealed pavement. Even a small amount of sealcoated pavement can be the dominant source of PAHs to sediment in stormwater-retention ponds; proper disposal of such PAH-contaminated sediment can be extremely costly. Several local governments, the District of Columbia, and the State of Washington have banned use of these products, and several national and regional hardware and home-improvement retailers have voluntarily ceased selling them.

show abstract

“…Since 2005, several studies have hypothesized that refined tar-based pavement sealer (RT-sealer) is another potentially significant source of PAHs to urban sediment (Mahler et al 2005;Van Metre et al, 2009;Yang et al, 2010;Van Metre and Mahler 2010;Watts et al, 2010). The hypothesis is based on observations of elevated concentrations of PAHs in particles and runoff associated with RT sealer-treated parking lots and comparison of PAH compositions in sediment and potential source samples.…”

mentioning

confidence: 99%

Forensic Assessment of Refined Tar-Based Sealers as a Source of Polycyclic Aromatic Hydrocarbons (PAHs) in Urban Sediments

O’Reilly

Pietari

Boehm

2012

Environmental Forensics

View full text Add to dashboard Cite

Atmospheric deposition of particles and their subsequent transport by stormwater are a major source of polycyclic aromatic hydrocarbons (PAHs) in urban sediments. Recently, the results of forensic analysis have been used to promote a hypothesis that refined tar-based pavement sealers (RT-sealers) are another significant source. To evaluate this hypothesis, a suite of forensic methods was applied to a wider range of PAH data for this study. Sediments PAH profiles are no more similar to RT-sealers than they are to a number of other environmental inputs. While RT-sealers were not eliminated as a potential source in some locations, forensic methods did not differentiate their contribution from other sources of PAHs, indicating RT-sealers are not a unique or readily quantifiable source of PAHs to the urban environment.

show abstract

Polycyclic Aromatic Hydrocarbons in Stormwater Runoff from Sealcoated Pavements

Cited by 62 publications

References 19 publications

Identification and Toxicological Evaluation of Unsubstituted PAHs and Novel PAH Derivatives in Pavement Sealcoat Products

Identification and Toxicological Evaluation of Unsubstituted PAHs and Novel PAH Derivatives in Pavement Sealcoat Products

Coal-Tar-Based Pavement Sealcoat and PAHs: Implications for the Environment, Human Health, and Stormwater Management

Forensic Assessment of Refined Tar-Based Sealers as a Source of Polycyclic Aromatic Hydrocarbons (PAHs) in Urban Sediments

Contact Info

Product

Resources

About