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BWSSBBWSSB ENVIRONMENT ACTION PLAN (PART -B) FOR BANGALORE Presentation on By Chief Engineer (CP & WWM) BWSSB.

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Presentation on theme: "BWSSBBWSSB ENVIRONMENT ACTION PLAN (PART -B) FOR BANGALORE Presentation on By Chief Engineer (CP & WWM) BWSSB."— Presentation transcript:

1 BWSSBBWSSB ENVIRONMENT ACTION PLAN (PART -B) FOR BANGALORE Presentation on By Chief Engineer (CP & WWM) BWSSB

2 BWSSBBWSSB MAJOR RIVERS IN AND AROUND BANGALORE TO TAMILNADU AND BAY OF BENGAL JOINS RIVER PONNAIYAR KARNATAKA BOUNDARY

3 BWSSBBWSSB DRAINAGE PATTERN OF BANGALORE PONNIAYAR BASIN CAUVERY BASIN RIDGE LINE

4 BWSSBBWSSB WHAT IS ALL ABOUT – ENVIRONMENTAL ACTION PLAN (EAP) ?

5 BWSSBBWSSB WHAT IS EAP ? AN ACTION PLAN INCLUDING COST AND TIME REQUIRED FOR REHABILITATION OF EXISTING SEWERAGE SYSTEM TO COLLECT, TREAT AND DISPOSE THE TREATED SEWAGE THERE BY ABATING THE RAW SEWAGE FLOW INTO DRAINS AND LAKES etc. EAP-PART‘A’ : WORKS STARTED WITH NRCP FUNDS EAP-PART ‘B’ : ADDITIONAL WORKS IDENTIFIED FOR KUIDFC FUNDING

6 BWSSBBWSSB OBJECTIVE –STOPPING FLOW OF RAW SEWAGE INTO STORM WATER DRAINS –ACHIEVING ZERO DISCHARGE OF RAW SEWAGE INTO DRAINS –CONVEYING SEWAGE TO TREATMENT PLANTS –AND TREATING TO MEET STANDARDS –IMPROVING ENVIRONMENT –IMPROVING SOCIO-ECONOMIC STATUS

7 BWSSBBWSSB EAP-PART ‘A’ Under EAP-Part ‘A’, totally fourteen works for rehabilitation of major sewers were identified and prioritised based on their condition & urgency in all three major valleys as follows: 1.V-Valley : Ten works 2.Koramangala Valley : Three works 3.Challaghatta Valley : One work

8 BWSSBBWSSB WORKS UNDER EAP –PART’A’ SANCTIONED FUNDS : Rs Crores AWARDED COST OF WORKS : Rs Crores DETAILS OF WORKS VRISHABAVATHI VALLEY: 10 Works KORAMANGALA VALLEY : 03 Works CHALLAGHATTA VALLEY: 01 Works TOTAL LENGTH OF SEWERS : KM DUE DATE FOR COMPLETION : AUGUST 2004

9 BWSSBBWSSB SEWERS COVERED UNDER EAP-PART(A)

10 BWSSBBWSSB V-Valley 1.Sujatha Theatre – Laying of parallel 1200mm and 1600mm dia trunk sewers 2.Guttahalli – Laying of 600mm dia submain 3.Hosakerehalli Bus stand – Laying of 450mm dia submain 4.APMC – Laying of 450mm dia submain 5.Cauvery nagar – Laying of 450 & 600mm dia submain 6.Nandhini Theatre – Laying of 450mm dia submain 7.Kamakshipalya – laying of 450mm dia submain 8.Laggere – Laying of 450mm dia submain 9.Magadi Road Bridge- Laying of parallel 1200mm dia trunk sewer 10.SJR College – Laying of 1200mm dia trunk sewer Challaghatta 11. RBANMS Junction – Laying of 1200mm, 1600mm and 1800mm dia trunk sewers- Enhancement of capacity Koramangala 12.Koramangala Peripheral – Laying of 600mm dia trunk sewer-Enhancement of Capacity 13.Madivala –Laying of 1000 mm &1800 mm dia trunk sewers. 14.J.P Nagar 6 th Phase- Laying of 600 mm &800 mm dia trunk sewers- Enhancement of Capacity. LIST OF SEWERS COVERED UNDER EAP-PART(A)

11 BWSSBBWSSB WHY SEWAGE IS FLOWING INTO STORM WATER DRAINS ?

12 BWSSBBWSSB BECAUSE OF 1.INADEQUATE CARRYING CAPACITY 2.CORRODED & DAMAGED SEWERS 3.SEWERS WITH REVERSE / FLAT GRADIENT 4.SEWERS NOT LINKED TO SYSTEM 5.SEWERS NOT PROVIDED IN CERTAIN AREAS 6.SEWERS DISPLACED DURING FLOODS 7.SEWERS CONNECTED TO DRAINS DIRECTLY 8.MANHOLES DAMAGED FOR IRRIGATION 9.MANHOLES OVERFLOWING DUE TO BLOCKAGE BY THE SOLID WASTES DUMPED INTO MANHOLES 10.MANHOLES AND SEWERS ENCROACHED

13 BWSSBBWSSB SEWAGE FLOWS INTO OPEN DRAINS DUE TO INADEQUATE CARRYING CAPACITY

14 BWSSBBWSSB Seshadripuram Main Road-Malleshwaram- V Valley

15 BWSSBBWSSB Jakkarayana Kere – Seshadripuram: V-Valley

16 BWSSBBWSSB East End Road – Jayanagar : Koramangala Valley

17 BWSSBBWSSB SEWAGE FLOWS INTO OPEN DRAINS DUE TO CORRODED AND DAMAGED SEWERS

18 BWSSBBWSSB Magadi Road-Cholurplaya-V-Valley

19 BWSSBBWSSB Clear View in Magadi Road-Cholurplaya-V-Valley

20 BWSSBBWSSB Corroded Sewer Exposed in MV Garden-Ulsoor Challaghatta Valley

21 BWSSBBWSSB Sathyanarayana Swamy Temple Street – Near Ulsoor Lake –Challaghatta Valley

22 BWSSBBWSSB Ulsoor Lake Bund – Challghatta Valley Nalla Road- Murphy Town

23 BWSSBBWSSB Near Nalla Road in M.V. Garden-Ulsoor Challghatta Valley

24 BWSSBBWSSB SEWAGE FLOWS INTO OPEN DRAINS DUE TO SEWERS LAID IN REVERSE / FLAT GRADIENT

25 BWSSBBWSSB Near the Park in Prasanthi Nagar-Pattegerpalya K & A Valley

26 BWSSBBWSSB Near PESIT in Desouza Colony – Hosekerehalli V-Valley

27 BWSSBBWSSB At Ranganathapura in KamakshiPalya K & A Valley

28 BWSSBBWSSB In RPC Layout -Rajaji Nagar : V-Valley

29 BWSSBBWSSB SEWAGE FLOWS INTO OPEN DRAINS DUE TO ABSENCE OF SEWERAGE NETWORK

30 BWSSBBWSSB Near Pusphagiri Nagar-Hosekere halli Kathriguppa Valley

31 BWSSBBWSSB SEWAGE FLOWS INTO OPEN DRAINS DUE TO SEWERS DISPLACED DURING FLOOD

32 BWSSBBWSSB Near Infant Jesues Church at Vivek Nagar K-Valley

33 BWSSBBWSSB SEWAGE FLOWS INTO OPEN DRAINS DUE TO LATERALS DIRECTLY CONNECTED TO DRAINS

34 BWSSBBWSSB Maruthi Nagar- Tavarakere

35 BWSSBBWSSB J.P Nagar 6 th Phase –Jaragenahalli Tavarekere

36 BWSSBBWSSB Near Krishnappa Garden- Balaji Nagar Koramangala Valley

37 BWSSBBWSSB Andhaman Nagar, J.C. Road Koramanagala Valley

38 BWSSBBWSSB Gazoor Layout -Vinayak Nagar Tavarekere

39 BWSSBBWSSB Dollars Layout - J.P Nagar Tavarekere

40 BWSSBBWSSB SEWAGE FLOWS INTO OPEN DRAINS DUE TO SEWERS AND MANHOLES DAMAGED TO IRRIGATE THE FIELDS

41 BWSSBBWSSB Defence land : KoramangalaValley

42 BWSSBBWSSB

43 BWSSBBWSSB Central Excise Layout-Yeshwanthapur Hebbal

44 BWSSBBWSSB Defence Land - Koramangala Valley

45 BWSSBBWSSB SEWAGE FLOWS INTO OPEN DRAINS DUE TO SEWERS LAID INSIDE THE STORM WATER DRAINS

46 BWSSBBWSSB Srinivasanagar : Kathriguppa Valley

47 BWSSBBWSSB St.Jhons Church Road-Ulsoor Challaghatta Valley

48 BWSSBBWSSB Armstrong Road-Ulsoor Challaghatta Valley

49 BWSSBBWSSB SEWAGE FLOWS INTO OPEN DRAINS DUE TO SEWERS AND MANHOLES ENCROACHED

50 BWSSBBWSSB Dollars layout – J.P. NAGAR Tavarekere

51 BWSSBBWSSB Giri Nagar : Kathriguppe Valley

52 BWSSBBWSSB NDRI Compound – Koramangala Valley

53 BWSSBBWSSB Timber Yard Layout - Sanjay Nagar V-Valley

54 BWSSBBWSSB Krishanamma Garden –Munnireddy Palya Challaghatta Valley

55 BWSSBBWSSB IN ADDITION THE SYSTEM SUFFERS DUE TO LOW STRENGTH PIPES (NP2 / CI) PIPES USED BEYOND LIFE TIME NO PROPER BEDDING LACK OF CO-ORDINATION IN LINKING OF LOWER DIAMETER SEWERS UNEXPECTED DEVLOPMENTS &TRAFFIC LOAD ABSENCE OF VENT SHAFTS FOR LONG SEWERS DISCHARGE OF INDUSTRIAL WASTE ABSENCE OF INTERIOR DETAILS OF SEWERS AND MANHOLES

56 BWSSBBWSSB NECESSITY FOR EAP-PART B TO ACHIEVE THE OVER ALL GOAL OF ZERO DISCHARGE INTO DRAINS IT IS VERY MUCH REQUIRED TO CARRY OUT THE WORKS IDENTIFIED IN ALL MINOR VALLEYS AND FEW ADDITIONAL WORKS IDENTIFIED THERAFTER IN MAJOR VALLEYS. THEY ARE TO BE INTERLINKED WITH THOSE WORKS UNDER EAP-PART - A

57 BWSSBBWSSB SCOPE OF WORK – EAP (PART B) REHABILITATION / REPLACEMENT OF IDENTIFIED SEWERS (450mm to 2000mm dia) & APPERTUNENCES RECTIFYING THE DEFECTS IN THE COLLECTION SYSTEM LAYING NEW SEWERS WHEREVER NEEDED CONDUCTING CC-TV SURVEY TO ASSESS THE CONDITIONS OF MAJOR SEWERS

58 BWSSBBWSSB SUMMARY OF PROPOSAL – EAP (PART B) TOTAL LENGTH OF SEWERS: 95 KM LENGTH OF GRP SEWERS : 7.8 KM DIA OF SEWERS : mm TOTAL COST : Rs. 100 CRORES TIME REQUIRED : TWO YEARS NUMBER OF WORKS : 56 BASIS OF ESTIMATES : BWSSB SR(02-03)

59 BWSSBBWSSB OVERALL MAP SHOWING WORKS IDENTIFIED UNDER EAP (PART B)

60 BWSSBBWSSB V - VALLEY NUMBER OF WORKS : 12 LENGTH OF SEWERS : 19 KM COST OF WORKS : Rs Crores

61 BWSSBBWSSB MAP SHOWING IDENTIFIED SEWERS IN V-VALLEY

62 BWSSBBWSSB KATHRIGUPPE VALLEY NUMBER OF WORKS : 6 LENGTH OF SEWERS : 10.7 KM COST OF WORKS : Rs Crores

63 BWSSBBWSSB MAP SHOWING IDENTIFIED SEWERS IN KATHRIGUPPE

64 BWSSBBWSSB KETHMARANAHLLI & ARKAVATHYVALLEY NUMBER OF WORKS : 6 LENGTH OF SEWERS : 13.9 KM COST OF WORKS : Rs. 5.7 Crores

65 BWSSBBWSSB MAP SHOWING IDENTIFIED SEWERS IN ARKAVATHY VALLEY

66 BWSSBBWSSB HEBBAL VALLEY NUMBER OF WORKS : 3 LENGTH OF SEWERS : 6.0 KM LENGTH OF GRP SEWERS : 0.5 KM COST OF WORKS : Rs. 7.8 Crores

67 BWSSBBWSSB MAP SHOWING IDENTIFIED SEWERS IN HEBBAL VALLEY

68 BWSSBBWSSB CHALLAGATTA VALLEY NUMBER OF WORKS: 3 LENGTH OF SEWERS : 6.7 KM LENGTH OF GRP SEWERS : 1 KM COST OF WORKS : Rs Crores

69 BWSSBBWSSB KORAMANGALA VALLEY NUMBER OF WORKS : 13 LENGTH OF SEWERS : 30.7 KM LENGTH OF GRP:6.3 KM COST OF WORKS : Rs Crores

70 BWSSBBWSSB MAP SHOWING IDENTIFIED SEWERS IN KORAMANGALA AND CHALLAGHATTA

71 BWSSBBWSSB TAVARAKERE VALLEY NUMBER OF WORKS : 6 LENGTH OF SEWERS : 7.6 KM COST OF WORKS : Rs.4.14 Crores

72 BWSSBBWSSB MAP SHOWING IDENTIFIED SEWERS IN TAVARAKERE

73 BWSSBBWSSB NECESSITY FOR CC-TV SURVEY TO ASSESS THE CONDITION OF MAJOR SEWERS TO CREATE A DATA BASE ON SEWERS AND MANHOLES FOR LINKING TO GIS TO SUPPORT THE REGULAR O&M TO ARRIVE AT A REALISTIC SCHEDULE OF PREVENTIVE MAINTENANCE

74 BWSSBBWSSB SUMMARY OF COSTS REHABILITATION OF SEWERS IN ALL THE VALLEYS : Rs Crores PROVISIONAL SUMS TOWARDS - FOR CC-TV & CONDITION ASSESSMENT SURVEY : Rs Crores Consultancy fee : Rs Crores Contingencies : Rs. 3.60Crores TOTAL :Rs Crores

75 BWSSBBWSSB PLAN OF ACTION & TARGETS Step-1: Preparation of DPR (In Progress) Step-2: Invitation To Tenders, Evaluation and Award of Contract– within 3 months Step-3: Completion of Works in 24 Months

76 BWSSBBWSSB MEASURABLE OUT COMES and SOCIAL BENEFITS 1.About 110 MLD of raw sewage from all the Seven Major and Minor valleys could be brought into the system after completion of this project. 2.About 40,000 population residing in the core area of the City and some portions of the core interfacing with peripheral areas will be directly benefited out of the proposed new sewerage facilities. 3.About 5 lakhs population in the core area of the City will be benefited from the risk of direct exposure to raw sewage flowing in the open drains.

77 BWSSBBWSSB OTHER SOCIO ECONOMICAL BENEFITS Zero Discharge of Raw Sewage into Storm Water Drains Clean living Environment Reduction in damaged Assets Improved water quality in Lakes Improved Ground Water Quality Improvement in fish life and aquatic ecology Improved Aesthetics Improvement in Public Health & quality of life Appreciation of property values Socio-Economic Improvement

78 BWSSBBWSSB


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