Residential street-dirt accumulation rates and chemical composition, and removal efficiencies by mechanical- and vacuum-type sweepers, New Bedford, Massachusetts, 2003-04

Abstract

Concentrations are given in percent (%), parts per million (ppm), and parts per billion (ppb). Street-Dirt Accumulation Rates Street-dirt accumulation rates are given in grams per curb meter per day (g/curb-m/d). Intuitively, accumulation rates should be reported in units of mass per unit area per unit time. Street dirt accumulates along curbs, however, and therefore accumulation rates are reported in units of mass per unit curb length per unit time as has been the practice in other investigations reporting street-dirt accumulation. For example, one kilogram of street dirt accumulated on a street surface that is one kilometer in length over one day would be equal to 0.5 grams per curb meter per day; one kilometer of street has two kilometers of curb length or 2000 curb meters. Abbreviations BMPs best management practices DIW deionized water HEPA high-efficiency particulate air filter ICPES inductively coupled plasma-emission spectroscopy

Metal levels in street sediment from an industrial city: spatial trends, chemical fractionation, and management implications

“…Levels of Pb, Cu, Zn, Fe, and Mn were significantly related to traffic density in a study conducted in Hong Kong (Ho and Tai 1988). Zinc levels can be surprisingly high in used motor oil and Zn also is found in transmission fluid, tire wear particles, and asphalt (Harrison 1979;Breault et al 2005) and this may explain the spatial trend for Zn in our study. Interestingly, the kriging results showing high Pb levels in the industrial area may have been extended further south because the highest Pb level (2,302 µg/g) was found at site 3, towards the southern edge of the industrial area.…”

“…For example, Sutherland and Jelen (1997) found that regenerative air units had removal efficiencies of 32% for particle sizes <63 µm, 71% for particles between 63 and 125 µm, and 94% for particles between 125 and 250 µm. As a result of the improved technology, there seems to be a renewed interest in evaluating street sweeping as an effective stormwater and air quality BMP (e.g., Curtis 2002;Zarriello et al 2002;Breault et al 2005;Chang et al 2005;Schilling 2005;Selbig and Bannerman 2007;Law et al 2008). Schilling (2005) concluded that street sweeping is cost-effective compared to structural BMPs, particularly when integrated as a component of an overall environmental management plan.…”

Numerical study on particle removal performance of pickup head for a street vacuum sweeper

“…Dust and silt are the major sources of particle matter pollution, the removal of which therefore attracts considerable attention [1]. Street sweeping is typically practiced to remove the accumulation of dust and silt from road surface to improve aesthetics, public healthy, and storm water quality, so it is considered as an effective pollutant control practice for many local authorities [2,3]. Pickup head is the key component of street vacuum sweeper, which is designed to pick up particles efficiently from road surface and send them to dust collection hopper smoothly.…”

Removal of road deposited sediments by sweeping and its contribution to highway runoff quality in Korea

“…Bannerman [11] reported a reduction of 50-88% in annual sediments on streets by mechanical sweeping. Breault et al [12] also showed a sediment removal of 60-92% using a vacuumassisted sweeper. Furthermore, it has been suggested that sediments on highways can be well controlled by operating a vacuum-assisted sweeper once a week.…”