6－14 Environment Improvement(2004－2005)
Items | 2005 | 2004
Environment Quality |  |
The Average Daily Indicators of Particulate Matter Inhaled |  | 0.100 | 0.118
| (mg/m3) |
The Average Daily Indicators of Sulfur Dioxide |  | 0.069 | 0.075
| (mg/m3) |
The Average Indicators of NO2 |  | 0.038 | 0.042
| (mg/m3) |
Up-to-Standard Rate of Urban Drinking Water Quality |  | 97.1 | 96.6
Up-to-Standard Rate of Urban Surface Water Quality |  | 100.0 | 100.0
Average Daily Noise Value | (decibel) | 55.8 | 55.2
Average Indicator of Noise at Main Traffic Lines | (decibel) | 66.6 | 66.8
Pollution Control |  |
Coverage Rate of Soot Control |  | 100.0 | 100.0
Up-to-Standard Rate of Industrial Waste Water Discharge |  | 97.4 | 98.3
Up-to-Standard Rate of Automobile Exhaust Discharge |  | 89.6 | 89.3
Rate of Comprehensive Utilization of Solid Industrial Waste |  | 98.3 | 97.0
Rate of Disposal of Hazardous Waste |  | 100.0 | 100.0
Environment Improvement |  |
Rate of Disposal of City Waste Water |  | 67.5 | 66.8
Rate of Gas Utilization in the City |  | 95.0 | 92.6
Green Coverage Rate in Urban Constructed Areas |  | 40.0 | 37.5
Coverage Rate of Nature Preservation Areas |  | 10.6 | 10.6
Environment Treatment |  |
Indexes of Investment in Urban Environment Protection |  | 2.8 | 2.6