Encyclopedia of Environmental Science and Engineering, Volume I and II

1182 URBAN RUNOFF

50 100

100

150 200

200

250 300

300

400

500

600

700

TOTAL SOLIDS

NUMBER OF PASSES PER YEAR

STREET SURFACE

SOLIDS LOAD (lb/curb–mi)

FIGURE 2 Street cleaner productivity in Bellevue, Washington.

50 100

10

150 200

20

30

40

50

60

70

80

90

250 300

CHEMICAL OXYGEN DEMAND

NUMBER OF PASSES PER YEAR

STREET SURFACE

SOLIDS LOAD (lb/curb–mi)

FIGURE 3 Street cleaner productivity in Bellevue, Washington.

T A B L E 1

Pollutants retained in catch basins

Constituent % Retained

SS 60–97

Volatile SS 48–97

COD 10–56

BOD 5 54–88

T A B L E 2

Catch basin costs (ENR 
 5,000)

Range Average

Total Installed Cost, $ 1,014–2,453 2,019

(EPA-600/2-77-051).

C021_002_r03.indd 1182C021_002_r03.indd 1182 11/23/2005 9:45:44 AM11/23/2005 9: