6-16 Environment Improvement
Items | 2001 | 2002
Environment Quality |  |
|  | 0.144 | 0.112
| (mg/m3) |
The Average Daily Indicators of Sulfur Dioxide |  | 0.056 | 0.052
| (mg/m3) |
|  | 0.034 | 0.036
| (mg/m3) |
Up-to-Standard Rate of Urban Drinking Water Quality |  | 98.0 | 96.0
Up-to-Standard Rate of Urban Surface Water Quality |  | 91.7 | 91.7
Average Daily Noise Value | (decibel) | 56.9 | 58.8
Average Indicator of Noise at Main Traffic Lines | (decibel) | 69.8 | 69.4
Pollution Control |  |
Coverage Rate of Soot Control |  | 100.0 | 100.0
Up-to-Standard Rate of Industrial Waste Water Discharge |  | 91.1 | 96.8
Up-to-Standard Rate of Automobile Exhaust Discharge |  | 88.9 | 89.3
Rate of Comprehensive Utilization of Solid Industrial Waste |  | 91.2 | 94.3
Rate of Disposal of Hazardous Waste |  | 100.0 | 100.0
Environment Improvement |  |
Rate of Disposal of City Waste Water |  | 40.5 | 56.1
Rate of Gas Utilization in the City |  | 88.1 | 90.3
Green Coverage Rate in Urban Constructed Areas |  | 29.7 | 31.4
Coverage Rate of Nature Preservation Areas |  | 11.0 | 10.7
Environment Treatment |  |
Indexes of Investment in Urban Environment Protection |  | 2.2 | 2.2