Sewerage - Nagar Nigam Raipur

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Project Management Consultancy Services for Sewerage, Storm, Surface Water Drains and Lake Protection Works For Raipur City Detailed Design Report - Sewerage Executive Summary Total Cost For STPs (Intermediate Stage) Rank Process Cost (Lakh Rs.) Land Capital Capitalized O&M for 15 yrs Total 1 Sequential Batch Reactor (SBR) 31.65 19855.00 5580.01 25466.66 2 Activated Sludge Process 79.12 20482.00 10818.38 31379.5 As seen from the above comparison, SBR technology is cheaper than Activated Sludge Process and becomes the economical option considering cost of land, capital investment and annualized O&M for 15 years tenure. Since Raipur city is expected to have a facelift in future, and keeping pace with time a technology with excellent treatment efficiency, low life cycle analysis cost and less land requirement would suit most. Hence Sequential Batch Reactor (SBR) STP is finally recommended for Raipur. For yielding better results, the RMC has to gear for the arrangements (like power, O&M inputs) in long run to convert it in a model treatment facility in state. Treated Effluent Reuse: Considering the growth of industrial activities in and around Raipur city, the exceptionally high quality effluent from SBR technology will be an additional resource to augment industrial nonprocess water requirement. Potential for agricultural reuse exist, which requires positive information dissemination to users. The effluent quality expected out of SBR is sufficient to permit its safe disposal into nearby receiving waters while meeting the statutory requirement of the state. Therefore, effluent reuse for industrial purpose and partly into natural waters has been selected. Environmental Assessment The overall identification of negative and positive impacts for the project has been carried out by using matrix. The matrix includes all possible negative and positive impacts associated with construction of sewerage lines, construction and operation of pumping stations and STPs. The evaluated environmental impacts of this project along with mitigation measures and management plans are submitted along with DPR. Project Management In order to limit pre-qualification of contractors to only those who are capable of executing the project, meeting the requirements of quality and timely completion of works, it is proposed to set stringent pre-qualification criteria for contractors. To select the right type of contractors and to ensure that project execution is smooth, it is proposed to include certain provisions in the contract, some of which are (i) Rejection of tenders with abnormally high or abnormally low prices, (ii) Payment of advance against deployment of construction equipment and machinery in addition to mobilization advance, (iii) Introduction of a Bonus Clause, (iv) Third party inspection of piping, accessories and project machinery by reputed inspection agencies., (v) Weightage to the technical superiority of the bids in addition to prices for award of work based on criteria to be decided in consultation with RMC. Cost Estimates The cost estimate is prepared on the basis of Madhya Pradesh State Unified Schedule of Rates (effective since September 2002) with 64% escalation, and for items not falling in this schedule of rates, the rates as given in CPWD, Delhi Schedule of Rates, year 2007 and MP-PHE SOR - 2009 Meinhardt Singapore Pte Ltd, (India Branch) Page 9 of 120
Project Management Consultancy Services for Sewerage, Storm, Surface Water Drains and Lake Protection Works For Raipur City Detailed Design Report - Sewerage Executive Summary are adopted. Based on the detailed designs done for gravity sewers of 1032 kms, the cost is worked out as under; Particular Description Cost Sewer Network Zone-I+II+III (142 km 2 ) Rs. 57326.72 Lakhs Pumping Stations 13 Nos. Rs. 2198.35 Lakhs Treatment Plant 209 MLD Rs 20482.00 Lakhs (w/o O&M) Land Acquisition 29.40 + 0.71 ha Rs. 32.41 Lakhs Sr. No. 1 2 Summary of Costs Item Cost (Rs.) Crores Sewerage system complete with laterals, collectors, interceptor sewers + 13 Nos of Sewage Pumping Stations with DI rising main and all accessories complete 3 Sewage Treatment Plants on SBR technology complete in all aspects (zone-I : 65 Mld, zone –II: 67 Mld and zone-III: 77 Mld) 595.250 204.82 3 O & M Cost for SPS and STP 22.411 4 Land Acquisition Cost for 30.11 hac (for all 3 STPs & 11 SPS) 5 Environmental Mitigation and Monitoring Cost 0.25 6 Relocation of Utilities 1.00 7 House Connections for 82200 as per CDP of Raipur Remarks 1032 km of gravity sewers 150 – 2200 mm diameter Only construction cost cost of O&M of 3 years 0.3241 @ Rs.1 per sq.ft. 51.349 TOTAL 875.3118 Adding 6%* for Contingencies and Departmental Charges of Total Cost 52.923 Total Cost (Rs. in Crores) * percentage approved under Bilaspur Sewerage Project 927.830 During construction stage Provisional LS item 75000 domestic, 5000 commercial, 2200 industrial The major capital cost in this project is for laying of 1032 kms of gravity sewers ranging from 150 mm to 2200 mm diameter. Though the sewer laying is for the betterment of population of Raipur, but at the same it is the responsibility of RMC to recover the cost of project from the population benefited by the project. Unlike water supply schemes, where water is charges to the consumers who are connected to piped water supply, sewerage connections perform poor in terms of realization of user charges. The CDP targets for providing 75000 domestic sewer connections, 5000 commercial and 2200 industrial connections by year 2012-2013. Meinhardt Singapore Pte Ltd, (India Branch) Page 10 of 120
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Ward No. Annexure - 2 Ward Wise Pop
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ANNEXURES The city is witnessing ra
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Table A-2.7: The Rate of Growth of
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Y 2005 ⎡⎛ Y = 670042 + ⎢⎜
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ANNEXURES As per CDP Raipur City, t
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F. Conclusion & Recommendations ANN
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Annexure -3 Influent Sewage Charact
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Annexure - 4 Type of Growth System
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ANNEXURES The STPs were either reno
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ANNEXURE - 6 ANNEXURES Annexure - 6
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Sewerage - Nagar Nigam Raipur

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