Climatic, Geographic and Geological Environments
1. The weather in the industrial zone is congenial. It belongs to the north subtropical marine monsoon climate. The four seasons are distinct, with a long summer and winter, and a short spring and autumn. Southeast wind prevails in summer and northwest wind in winter. The speed of wind is 3.5m/s on the average with the strongest wind of 20 m/s experienced occasionally from July to September.
2. Climatic parameters in 1997

Average temperature 16.7℃ Rain 136days
Annual rainfall 1099.0mm. Storm 21days
Annual sunshine 1806.7hours Internittent drizzles 23days
Average air pressure 1016.7hectopa Big fog 16days
Relative humidity 80% Freeze 32days
3. The zone belongs to the alluvial plain of Yangze River Delta with smooth terrain and unitary landform and its ground is about 4m above sea level on the average.
4. The zone is affluent in river system and rich in fresh water resources. Underground stable water level is appropriate 10m deep from ground surface and ordinary water level is appropriate 10m deep from ground surface and ordinary water level in watercourses is 2.5 m deep.
5. The phreatic water-bearing layer of the zone is 2-5 m deep from ground surface with thickness of 3-10m, mineralization at 1-3g/l and temperature at 12-15℃.
Pressure-bearable(IV) water-bearing layer of the zone is 150-170 m deep from ground surface with its thickness of 30-70m, mineralization less than 1g/l, total hardness of 16-25 German degree and water temperature at 23-24 ℃.
6. Engineering geographic information of the industrial zone
Suface soil layer. mostly of yellowish brown subclay. The thickness in 12.0-15.0m. It is mostly of gray silt clay, and it is of fluidity nature, low in hardness and high in sensibility.
The first soft soil layer: 1.0-4.6 m deep from ground surface. The thickness is 12.0-15.0. m. It is mostly of gray silt clay, and it is of fluidity nature, low in hardness and high in sensibility.
The second soft soil layer: 15.0-22.0 m deep from ground surface. The thickness is 5.8-12.0 m. It is mostly of gray clay and belongs to a fluidity layer of medium-high sensibility.
The second hard soil layer: 23.0-31.0 m deep ground surface. The thickness is 3.0-5.0m. The layer is stable, and the upper portion is of dark green subclay and the lower portion is of yellow-brown subclay, serving as an ideal piling base. Prefabricated concrete square piling of 0.45x0.45m2 is usually used, and the loading strength of a single piling is 80-100 ton/m2.
The second sand layer: 26.0-33.0 m deep from ground surface. The thickness is 10.0m. It is of yellowish gray fine sand, a layer that can be used as a piling base.