<b>Closure</b>

Lau, Seng Fong; Han, Younghan; Kang, Joo‐Hyon; Kayhanian, Masoud; Stenstrom, Michael K.

doi:10.1002/j.1554-7531.2010.tb00259.x

Cited by 3 publications

(2 citation statements)

References 10 publications

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“…The 15 km buffer distance positively correlated to 6PPD-Q because of the integration of road networks within this relatively large buffer range, where differences in the strength of relationship among sites may be dependent on factors described previously regarding the timing of urban development and the proximity of urban density within watersheds to sampling location. Precipitation events and impervious and/or urbanized areas have repeatedly been shown to positively correlate with stormwater runoff contaminants including metals and polycyclic aromatic hydrocarbons, 58 organic pollutants, 59 and nutrients and total suspended solids, 60 and this is also demonstrated for 6PPD-Q in urban streams in Australia 18 and our region (Figure 2). Stormwater management infrastructure, e.g., stormwater management ponds and bioretention cells, that are effective at reducing sediment loads also reduces a wide range of contaminants, 56,61 including TWPs and other microplastics.…”

Section: T H Isupporting

confidence: 60%

Assessment of Tire-Additive Transformation Product 6PPD-Quinone in Urban-Impacted Watersheds

Helm,

Raby,

Kleywegt

et al. 2024

ACS EST Water

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Urban stormwater is a conduit for pollutants such as nutrients and tire-wear compounds through streams to the Great Lakes receiving waters. The transformation product of tire antiozonant 6PPD, 6PPD-quinone (6PPD-Q), is implicated in causing fish mortality. Urban streams entering Lake Ontario and waters adjacent to urban centers in Toronto and Hamilton, Ontario, were assessed for 6PPD-Q and its potential to impact aquatic life. Sampling occurred during fall and spring dry-and wet-weather flows in 2021−2022, overlapping with fish spawning times. Concentrations of 6PPD-Q were elevated during wet-weather (maximum 82 ng/ L) in streams with the greatest degree of urbanization and road density but were much lower (2.4−4.5 ng/L) in nearshore waters, suggesting rapid dilution. Precipitation, road density within watersheds, chloride (from road salts), and total phosphorus were correlated with 6PPD-Q concentrations, suggesting that such parameters may provide a means to identify and prioritize key stream habitats for further assessment. A screening level hazard assessment using application factors of 10−1000 and available toxicity end points for fish (rainbow trout, brook trout, coho salmon) showed that 6PPD-Q concentrations may pose a risk in urban streams and nearshore waters of the region. We recommend that stormwater quality control measures be assessed for their effectiveness in reducing 6PPD-Q concentrations.

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Section: T H Isupporting

confidence: 60%

Assessment of Tire-Additive Transformation Product 6PPD-Quinone in Urban-Impacted Watersheds

Helm,

Raby,

Kleywegt

et al. 2024

ACS EST Water

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“…The continued existence of uncontrolled or poorly-controlled discharges from stormwater and CSOs could however constitute a major reason for the long-term persistence of low-quality water (Clark et al, 2006). Moreover, the magnitude of stormwater pollutant loads, their subsequent acute impact on receiving waters and their reliable and sensitive modelling have all remained key issues since 1990 (Chebbo and Saget, 1995;Deletic, 1998;Suarez and Puertas, 2005;Lau et al, 2009;Dotto et al, 2010). Although Eriksson et al (2007) proposed a list of substances based on a theoretical assessment of stormwater substances (CHIAT:…”

Section: Introductionmentioning

confidence: 99%

Priority pollutants in urban stormwater: Part 2 – Case of combined sewers

et al. 2012

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This study has evaluated the quality of combined sewer overflows (CSOs) in an urban watershed, such as Paris, by providing accurate data on the occurrence of priority pollutants (PPs) and additional substances, as well as on the significance of their concentrations in comparison with wastewater and stormwater. Of the 88 substances monitored, 49 PPs were detected, with most of these also being frequently encountered in wastewater and stormwater, thus confirming their ubiquity in urban settings. For the majority of organic substances, concentrations range between 0.01 and 1 μgl(-1), while metals tend to display concentrations above 10 μgl(-1). Despite this ubiquity, CSO, wastewater and stormwater feature a number of differences in both their concentration ranges and pollutant patterns. For most hydrophobic organic pollutants and some particulate-bound metals, CSOs exhibit higher concentrations than those found in stormwater and wastewater, due to the contribution of in-sewer deposit erosion. For pesticides and Zn, CSOs have shown concentrations close to those of stormwater, suggesting runoff as the major contributor, while wastewater appears to be the main source of volatile organic compounds. Surprisingly, similar concentration ranges have been found for DEHP and tributyltin compounds in CSOs, wastewater and stormwater. The last section of this article identifies substances for which CSO discharges might constitute a major risk of exceeding Environmental Quality Standards in receiving waters and moreover indicates a significant risk for PAHs, tributyltin compounds and chloroalkanes. The data generated during this survey can subsequently be used to identify PPs of potential significance that merit further investigation.

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Of: Variations in Highway Stormwater Runoff Quality and Stormwater Treatment Performance in Relation to the Age of Porous Friction Courses, J. P. Moores, P. E. Pattinson, C. R. Hyde, 85, 772–781 (2013); corrected at 86, 285 (2014).

Minervini¹

2014

Water Environment Research

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Closure

Cited by 3 publications

References 10 publications

Assessment of Tire-Additive Transformation Product 6PPD-Quinone in Urban-Impacted Watersheds

Assessment of Tire-Additive Transformation Product 6PPD-Quinone in Urban-Impacted Watersheds

Priority pollutants in urban stormwater: Part 2 – Case of combined sewers

Of: Variations in Highway Stormwater Runoff Quality and Stormwater Treatment Performance in Relation to the Age of Porous Friction Courses, J. P. Moores, P. E. Pattinson, C. R. Hyde, 85, 772–781 (2013); corrected at 86, 285 (2014).

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