Government of Tamil Nadu jointly with Ministry of Environment
and Forest ( National River Conservation Directorate), Government of
India undertook a comprehensive study examining the cause of pollution
of the water ways and its impact on the environment and formulated "
Chennai City River Conservation Project".
Chennai City has six waterways viz. Adyar, Cooum, Buckingham
canal, Otteri Nullah, Captain Cotton Canal and Mambalam Drain.
Essentially these river functions as a flood carriers and have
flows for about 2 months during monsoon.
During the remaining part of the year the flow is mainly due to
discharge of treated, partially treated and untreated sewage through
about 311 out falls meant for storm water discharge, resulting in accumulation
of large volume of sludge and formation of sand bar in the mouth of rivers.
These overflows have created significant problems for flood protection
system, storm water drain net works and public health leading to over
all environmental degradation Hence, long
term objective of the project is to holistically improve the waste water
or sewage disposal network so as to prevent noxious substances from reaching
the water ways.
The project aims to provide the following.
v
Interceptor sewers along River banks
v
Increasing Pumping Potential of Sewage Pumping Stations.
v
To achieve 100% effluent Standards
of Sewage Treatment Plants as per the Tamil Nadu Pollution Control
Board's norms
v
To increase the coverage of Agro-Forestry with treated sewage
v
To set up nursery of saplings of Agro-Forestry at Sewage Treatment
Plants.
Moreover, the capacity of the existing sewer system has become
grossly inadequate and is in need of major improvements, if the discharge
of untreated and partially treated sewage into the City Water Ways is to
be prevented.
The components pertaining to interception, diversion and treatment
of sewage costing Rs.720.15 crores (prevention of raw and untreated sewage
flow to water courses) would be implemented by CMWSSB and supported by
the Govt. of India, Ministry of Environment and Forests, National River
Conservation Directorate (NRCD) on the following funding pattern:
1. Grant from NRCD
Rs.491.52 Crores
2. Internal generation by CMWSSB
:Rs.228.63 Crores
This comprises of "Interception, Diversion and Treatment of
Sewage" in all the five zones and providing additional 264 mld capacity
of sewage treatment plants in four locations.
The works are planned to be executed in 16 Packages.
Package-1A1 :
Interceptor works at Besant Nagar and Thiruvanmiyur, Pumping
Stations at Perungudi, Velachery and Gandhi Nagar, and pumping main for
Gandhi Nagar.
Contractor
: M/s. VA Tech Wabag
Ltd.
Contract Value
: Rs.15.49 Crores
Date of commencement of work
: 11.05.2001
Period of completion : 30 months
Length of
Interceptor
: 746
m
Length of
Pumping Main
: 108 m
Stage of work
: 100% of civil works
completed
: 100% of Mech. &
Elec., works completed
Package-1A2 :
Laying RCC gravity sewers from Madhaya Kailash along CPT Road,
Taramani and Old Mahabalipuram Road upto Perungudi STP.
Contractor
: M/s. Simplex
Concrete Piles (I) Ltd.
Contract Value
: Rs.17.76 Crores
Date of commencement of work : 11.05.2001
Contract Period
: 30 months
Length
of Gravity Main
:
6929 m
Stage of work
: 100% of pipe laying
works completed
Map showing the area covered under package 1A1&1A2
Package-2 :
Interceptor works for North Mylapore and Ice House pumping station,
pumping main and gravity main for Ice House.
Contractor
: M/s. Cipta Wawasan
Maju Engg
Contract Value
: Rs.20.19 Crores
Date of commencement of work
: 05.03.2001
Contract Period : 30 months
Length of Interceptor
: 9192 m
Length of Pumping Main
: 2950 m
Length of Gravity Main
: 2600 m
Stage of work
: 100% of civil works
completed
100% of Mech. works completed
100% of Pipelaying works completed
Map showing the area covered under package 2
Package-3
:
Interceptor works at Kasimedu, North Wall Road, Tondiarpet-A,
B & E pumping station and pumping main for Kasimedu.
Contractor
: M/s. Ramky Engineers
Pvt. Ltd.
Contract Value
: Rs. 8.97 Crores
Date of commencement of work
: 14.02.2001
Contract Period : 30 months
Length of Pumping Main
: 7625 m
Length of Gravity Main
: 2107 m
Stage of work
: 100% of civil works
completed
100% of Mech. works completed
100% of Pipelaying works completed
Map showing the area covered under package 3
Package-4 :
Expansion of capacity of interceptor system in South Mylapore,
Adyar (old) and expansion of capacity of pumping stations at Nandanam,
Adyar and Guindy.
Contractor
: M/s. Nagarjuna Constn.
Co. Ltd.
Contract Value
: Rs.25.81 Crores
Date of commencement of work
: 05.03.2001
Contract Period : 30 months
Length of Interceptor
: 8375 m
Length of Pumping Main
: 3322 m
Length of Gravity Main
: 1117 m
Stage of work
: 100% of civil works
completed
: 100% of Mech. works
completed
: 100% of Pipelaying works
completed
Map showing the area covered under package 4
Package-5A1 :
Expansion of capacity of K.K.Nagar ‘B’ and Nesapakkam pumping
stations.
Contractor
: M/s. V.A.Tech Wabag
Ltd.
Contract Value
: Rs.7.54 Crores
Date of commencement of work
: 11.05.2001
Length of
Interceptor
:
Completed
Length of Pumping
Main
:
Completed
Length of Gravity Main
: Completed
Stage of work
: 100% of civil works
completed
: 100% of Mech. works
completed
Package-5A2 :
Expansion of capacity of Kodambakkam, Ekkattuthangal interceptors
and replacement of Nesapakkam gravity sewers.
Contractor
: M/s. Simplex Concrete
Piles (I) Ltd.
Contract Value
: Rs.9.57 Crores
Date of commencement of work
: 11.05.2001
Contract Period : 30 months
Length of
Interceptor
: 2495 m
Length of Pumping
Main
: 716 m
Length of Gravity Main
: 3332 m
Stage of work : 100% of pipe laying works completed
Map showing the area covered under package 5A1&5A2
Package-6A :
Expansion of capacity of interceptor in Thomas Road, T.Nagar,
South Boag Road and expansion of capacity of Pumping Station in Thomas
Road and construction of new Pumping Station at South Boag Road with
Pumping Main.
Contractor
: M/s. V.A. Tech Wabag
Ltd.
Contract Value
: Rs.12.12 Crores
Date of commencement of work
: 12.09.2003
Contract Period : 30 months
Length of
Interceptor
: 6476 m
Length of Pumping
Main
: 3844 m
Stage of work
: 100% of civil works
completed
100% of Mech. works completed
100
% of Pipelaying works completed
Map showing the area covered under package 6A
Package-7 :
Interceptor works at Saidapet A, B, C, D and Ashok Nagar, expansion
of capacity of Saidapet-C, Jafferkhanpet and Ashok Nagar pumping station,
pumping main for Saidapet-C and Jafferkhanpet, gravity main for Jafferkhanpet
pumping station.
Contractor
: M/s. Lanco Construction
Ltd.
Contract Value
: Rs.12.68 Crores
Date of commencement of work
: 12.03.2001
Period of completion
: 30 months
Contract Period
: 30 months
Length of
Interceptor
: 6527 m
Length of Pumping
Main
: 1860 m
Length of Gravity Main
: 869 m
Stage of work
: 100% of civil works
completed
: 100% of Mech. works
completed
: 100% of Pipelaying works
completed
Map showing the area covered under package 7
Package-8
:
Interceptor work in Kodambakkam and Arumbakkam, expansion of
capacity of Arumbakkam and Sydenhams Road pumping stations, gravity main
for K.K.Nagar and pumping main for Sydenhams Road.
Contractor
: M/s. Lanco Construction
Ltd.
Contract Value
: Rs.16.44 Crores
Date of commencement of work
: 12.03.2001
Contract Period
: 30 months
Length of Interceptor
: 7290 m
Length of Pumping Main
: 717 m
Length of Gravity Main
: 397 m
Stage of work
: 100% of civil works
completed
: 100% of Mech. works
completed
:
100% of Pipelaying works completed
Map showing the area covered under package 8
Package-9A:
Interceptor work in Kodungaiyur Phase I and M.K.B.Nagar catchment
areas and expansion of capacity of Pumping Stations at Kodungaiyur
Phase I, M.K.B.Nagar, Javkhar Nagar, Melpattadai and Periyar Nagar.
Contractor
: M/s. Vishwa Constructions
Contract Value
: Rs.6.40 Crores
Date of commencement of work
: 21.08.2003
Period of completion
: 18 months
Length of Interceptor
: 431 m
Length of Pumping Main
: 4244 m
Stage of work
: 100% of civil works
completed
: 100% of Mech. works completed
:
100% of Pipelaying works completed
Map showing the area covered under
package 9
Package-10 :
Expansion of capacity of interceptors in the Purasawalkam catchment
area and expansion of pumping capacity of Sembium pumping station and
Purasawalkam pumping station.
Contractor
: M/s. Simplex Concrete
Piles (I) Ltd.
Contract Value
: Rs.25.63 Crores
Date of commencement of work
: 12.03.2001
Contract Period : 30 months
Length of Interceptor
: 6365 m
Length of Pumping Main
: 3430 m
Stage of work
: 100% of civil works
completed
: 100% of Mech. works completed
:
100% of Pipelaying works completed
Map showing
the area covered under package10
Package-11
:
Expansion of capacity of interceptors at Shenoy Nagar, Anna
Nagar-A, B & C, expansion of pumping capacity of Anna Nagar-A, B &
C pumping station and expansion of capacity of pumping main/gravity
sewer for Anna Nagar-B.
Contractor
: M/s. V.A. Tech Wabag
Ltd.
Contract Value
: Rs.12.86 Crores
Date of commencement of work
: 26.03.2001
Contract Period
: 30 months
Length of Interceptor
: 3415 m
Length of Pumping Main
: 1510 m
Length of Gravity Main
: 826
m
Stage of work
: 100% of civil works
completed
: 100% of Mech. works completed
:
100% of Pipelaying works completed
Map showing the area covered under package11
Package-12 :
Laying interceptors at Villivakkam Sector-A and Sector-B, laying
of pumping/gravity main from Villivakkam Phase-II and laying of pumping
mains from Villivakkam Sector-A and Sector-B pumping stations and expansion
of capacity of pumping stations at Villivakkam Sector-A, Sector-B and
Phase-II.
Contractor
: M/s. Vishwa Constructions
Contract Value
: Rs.4.73 Crores
Date of commencement of work
: 30.03.2001
ContrPeriod : 30 months
Length of Interceptor
: 230 m
Length of Pumping Main
: 3895 m
Length of Gravity Main
: 1226 m
Stage of work
: 100% of civil works completed
:
100% of Mech. works completed
: 100
% of Pipelaying works completed