landfill pit, and one pollution monitoring well near the fluorescent lamp dismantling workshop shall be used as the downstream diffusion monitoring well.
(8) The evaluation result of pollution source intensity classification is Level III.
5.6 East China
Case 12 Groundwater pollution survey, source strength assessment and risks
assessment of a Landfill in Shanghai
1. Overview of the region of interest
(1) Physiographic conditions
① Geographical location
XX Landfill is a large-scale landfill on the coast of the East China Sea in Pudong
New Area, Shanghai, China, with the Pudong International Airport in the north and
Nanhui New City in the south.
② Climatic characteristics
The area features the subtropical maritime monsoon climate, mild and humid
throughout the year, with four distinct seasons. The annual average temperature is
16.6 °C, with an extreme highest temperature of 37.1 °C and an extreme lowest
temperature of −4 °C. The annual sunshine time is 1868 h with an annual evaporation of 1341 mm, and the annual rainy day accounts for 120 days, with an
annual precipitation of 1202 mm. The annual frost-free period is 218 days.
The dominant wind direction in the area is southeast (SE), with a frequency of
10%; the secondarily dominant wind direction is southeast by east (ESE) and
northwest (NW), with a frequency of 8% for both; the calm wind frequency is 5%.
The average wind speeds in different wind directions range between 2.9 and 4.5 m/
s, with an average of 3.6 m/s.
The annual atmospheric stability of Shanghai is mainly level D, accounting for
52.9%, with the level E stability accounting for 15.6%, the level C stability
accounting for 14.9%, the level B stability accounting for 10.4%, and the levels A,
F, and G accounting for less than 5%.
③ Hydrological characteristics
The area lies in Huangpu River drainage system, a plain tidal river network
crisscrossed with river ports and abundant in water resources. The Old Port
Domestic Waste Landfill is primarily surrounded by the Suitang River, People Pond
and Shengli Pond in the vicinity, and by the Bailong Port, Xinzha Port and Dazhi
River on the outskirts. According to the 30-year hydrological test, the Bailong Port,
the Dazhi River, and the East China Sea have a highest water level of 3.48 m
(December 19, 1974), 3.92 m (September 1, 1981), and 5.26 m (August 20, 1974);
5.5 North China
329
(8) The evaluation result of pollution source intensity classification is Level III.
5.6 East China
Case 12 Groundwater pollution survey, source strength assessment and risks
assessment of a Landfill in Shanghai
1. Overview of the region of interest
(1) Physiographic conditions
① Geographical location
XX Landfill is a large-scale landfill on the coast of the East China Sea in Pudong
New Area, Shanghai, China, with the Pudong International Airport in the north and
Nanhui New City in the south.
② Climatic characteristics
The area features the subtropical maritime monsoon climate, mild and humid
throughout the year, with four distinct seasons. The annual average temperature is
16.6 °C, with an extreme highest temperature of 37.1 °C and an extreme lowest
temperature of −4 °C. The annual sunshine time is 1868 h with an annual evaporation of 1341 mm, and the annual rainy day accounts for 120 days, with an
annual precipitation of 1202 mm. The annual frost-free period is 218 days.
The dominant wind direction in the area is southeast (SE), with a frequency of
10%; the secondarily dominant wind direction is southeast by east (ESE) and
northwest (NW), with a frequency of 8% for both; the calm wind frequency is 5%.
The average wind speeds in different wind directions range between 2.9 and 4.5 m/
s, with an average of 3.6 m/s.
The annual atmospheric stability of Shanghai is mainly level D, accounting for
52.9%, with the level E stability accounting for 15.6%, the level C stability
accounting for 14.9%, the level B stability accounting for 10.4%, and the levels A,
F, and G accounting for less than 5%.
③ Hydrological characteristics
The area lies in Huangpu River drainage system, a plain tidal river network
crisscrossed with river ports and abundant in water resources. The Old Port
Domestic Waste Landfill is primarily surrounded by the Suitang River, People Pond
and Shengli Pond in the vicinity, and by the Bailong Port, Xinzha Port and Dazhi
River on the outskirts. According to the 30-year hydrological test, the Bailong Port,
the Dazhi River, and the East China Sea have a highest water level of 3.48 m
(December 19, 1974), 3.92 m (September 1, 1981), and 5.26 m (August 20, 1974);
5.5 North China
329