4. description of the environment - Gujarat Pollution Control Board

Final Feasibility Report
Preparation of Feasibility– cum-Preliminary Design for 4/6 Laning
of Jetpur-Somnath section of NH 8D, Package No:
NHAI/DBFOII/DPR/02
Monitoring
Location &
Code
Chainage
(km)
T-Junction 126 + 700
NAAQ Norms*
(8/24 hourly
Mean)
Location
Reference
At T Junction
near Somnath
where the road
on RHS goes to
Somnath and on
LHS goes to
Bhavnagar*
Area
Category
Residential
& Rural
VOLUME III:
ENVIRONMENTAL IMPACT ASSESSMENT
Pollutant Concentration (μg/m3)
24 hourly mean values
RSPM TSPM SO2 NO2 HC CO
147.26 274.92 12.24 15.72 Nil 1335
150 500 120 120
The TSPM range is 230.00μg/Nm 3 to 399.00 μg/Nm 3 . The total particulate concentration at 50%
of location is less than 288 μg/Nm 3 . The higher concentration of TSPM at some locations is due
to higher concentration of RSPM in the ambient. In most of the samples, RSPM is 50% higher
than the prescribed standard. All gaseous pollutants viz. SO2, NO2, HC and CO are well within
the prescribed limit.
4.5 WATER ENVIRONMENT
Surface Water: The project region falls in Rajkot
and Junagadh district. Junagadh district is
prosperous in water on account of rivers, reservoirs
and lakes. The principal rivers of the district falling
along the project region are Uben, Ojat, Hiren,
Meghal and Raval. The slope of the district is
towards south. The rivers that cross the project
road are– Uben river at Ch 14/200, Lol river at Ch
29/200, Sonrakh river at Ch 30/800, Kalve river at
Ch 35/000, Vali river at Ch 47/000, Ozat river at Ch
48/000, Badodari river at Ch 61/100, Meghal river at
Devka River Crossing the Project Road
Ch 102/000 and Devka river at Ch 117/000. All the rivers are non perennial, rainfed. The rivers
are used for washing and cleaning. The hydrology of the project area is depicted in Figure 4-8.
Ground Water: As per the discussion with the officials of Gujarat Pollution Control Board, the
talukas falling in the project of both Rajkot and Junagadh districts are in Grey zone (restricted
zone). This categorization is attributed to the level of extraction of ground water against
increased domestic, industrial and irrigation requirements. The extraction is higher in the region
of Saurashtra.
In the year 2002, both the districts were categorised as Grey zone and the availability of the
ground water along the corridor varied between from 5 to 20 m below ground level (bgl) during
pre-monsoon (May 2002), while during post monsoon (November 2002) it has varied from less
than 5 to 10 m bgl . Ground water depth mostly depends on aquifer geology, geomorphology and
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