Krasnodar GRES Project Volume I11 Environmental Assessment

Substances
Dust
Mn2
Fluorides
Silicon compounds
HF
Table 5.14.
Composition and Amount of Emissions
Total Amount, t
0.78
0.04
0.1 12
0.04
0.04
The proposed pipeline construction process will provide for maximum conservation
of the fertile soil layer and along with the agrotechnical measures to restore its
original structure: aggregate negative effect of lowering of natural soil fertility can
fall from 20 - 25 points to 0 - 5 points.
During construction, certain river side erosion and washout is possible. No
significant changes in flood potential is expected.
To perform hydraulic tests of the pipeline, a water intake will be used equipped
such that aquatic biota does not get into the intake pipe.
@ The water used in gas pipeline tests does not contain harmful substances but
some dirt remaining inside the pipeline after its fitting of 0.07 kg/m3
concentration, and insignificant amount of soot, corrosion products and welding
grit of 0.003 kg/m3 concentration. The test water will be drained into special
temporary storage tanks located within the gas pipeline right-of-way zone.
The capacity of the storage tanks equals the volume of the water drained from
the gas pipeline tested. Upon drying the tanks are filled with soil from the raised
sections with further restoration of vegetation.
With designed capacity of the gas pipeline of 31.2 thousand m3 amount of the fed
and drained water will be:
- 4.68 thousand m3 - flushing water (accounting for use of cleaning piston)
- 31.2 thousand m3 - testing water (including possible leakage during
testing).
5.2.3.1.3 Environmental Impacts During Operation of the Gas Pipeline
The following impacts may occur during operation of the gas pipeline:
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