6－13 Environment Improvement (2009-2010)
Items | 2010 | 2009
|  | Environment Quality |
| The Average Daily Indicators of Particulate Matter Inhaled | (mg/m3) | 0.088 | 0.083
|  | The Average Daily Indicators of Sulfur Dioxide | (mg/m3) | 0.048 | 0.046
|  | The Average Indicators of NO2 | (mg/m3) | 0.045 | 0.037
|  | Up-to-Standard Rate of Urban Drinking Water Quality | (Percent) | 100.00 | 100.00
|  | Up-to-Standard Rate of Urban Surface Water Quality | (Percent) | 100.00 | 100.00
|  | Average Daily Noise Value | (decibel) | 55.3 | 55.8
|  | Average Indicator of Noise at Main Traffic Lines | (decibel) | 67.4 | 66.8
|  | Pollution Control |  |
|  | Coverage Rate of Soot Control | (Percent) | 100.0 | 100.0
|  | Up-to-Standard Rate of Industrial Waste Water Discharge | (Percent) | 99.3 | 98.7
|  | Rate of Comprehensive Utilization of Solid Industrial Waste | (Percent) | 97.1 | 98.6
|  | Rate of Disposal of Hazardous Waste | (Percent) | 100.0 | 100.0
|  | Environment Improvement |
|  | Rate of Gas Utilization in the City | (Percent) | 99.6 | 99.5
|  | Green Coverage Rate in Urban Constructed Areas | (Percent) | 42.6 | 43.2