Concentration of heavy metals (Cr, Zn, Mn, Ni, Pb, Cu) (mg/l) in street sweeps (Fig.
According to the hygienic norms (HN 60:2004) heavy metals in street sweeps and sludge exceed the norms 11 times (Table 1).
According to the data analyzed, concentration of heavy metals in street sweeps have no direct dependency on transport intensity.
Consequently, concentration of heavy metals in street sweeps depends on the surrounding environment (green zones, surrounding companies and industry, fuel, vehicle repair shops), frequency and time of vehicle stops because of the traffic jams and crossroads, driving speed, number of accidents, frequency of street sweeps works (sweeps export).
Generalized concentrations of heavy metals in street sweeps from different points and in sludge from outflow pipes are given in Table 2.
Average concentration of every heavy metal Pb, Mn, Cr, Zn, Cu, Ni in street sweeps is 2-3 times higher than in sludge from the outflow pipes.
Heavy metals concentration in street sweep from the streets is influenced by the nearby residing companies, oil stations, car repair shops, other buildings, frequency of car stops and their speed, street cleaning frequency, greenery.
The street sweeps intensified the closer we got to the games," he says.
City officials and members of the Atlanta Committee for the Olympic Games deny that the city has conducted street sweeps and intensified pressure on the homeless leading up to the Games.
A 30-year veteran of the investment management field, Riley is well known for his frequent appearances and for guest-hosting such programs as CNBC Market Wrap, CNN Money Line, CNNfn's
Street Sweeps, Bloomberg TV, WCVB-TV and New England Cable News.
