6－14 Environment Improvement（2005－2006）
Items |  | 2006 | 2005
Environment Quality |  |
The Average Daily Indicators of Particulate Matter Inhaled |  | 0.094 | 0.100
| (mg/m3) |
The Average Daily Indicators of Sulfur Dioxide |  | 0.059 | 0.069
| (mg/m3) |
The Average Indicators of NO2 |  | 0.038 | 0.038
| (mg/m3) |
Up-to-Standard Rate of Urban Drinking Water Quality |  | 100.0 | 97.1
Up-to-Standard Rate of Urban Surface Water Quality |  | 94.4 | 100.0
Average Daily Noise Value | (decibel) | 55.2 | 55.8
Average Indicator of Noise at Main Traffic Lines | (decibel) | 67.5 | 66.6
Pollution Control |  |
Coverage Rate of Soot Control |  | 100.0 | 100.0
Up-to-Standard Rate of Industrial Waste Water Discharge |  | 97.9 | 97.4
Rate of Comprehensive Utilization of Solid Industrial Waste |  | 97.4 | 98.3
Rate of Disposal of Hazardous Waste |  | 100.0 | 100.0
Environment Improvement |  |
Rate of Disposal of City Waste Water |  | 68.7 | 67.5
Rate of Gas Utilization in the City |  | 96.1 | 95.0
Green Coverage Rate in Urban Constructed Areas |  | 41.2 | 40.0
Environment Treatment |  |
Indexes of Investment in Urban Environment Protection |  | 2.8 | 2.8