Data collection for Mathematical model studies for tidal hydrodynamics and siltation to assess the technical feasibility for creation of channel and culvert / minor bridge connecting Panvel and Nhava creek for JN Port, Navi Mumbai

Amount

To carry out detailed bathymetry/ topography of Nhava creek area from Nhava creek mouth up to the land boundaries inside the creek (up to +8 m contour w.r.t. CD of Apollo Sunder) and part of Panvel creek as indicated in hard and soft (xyz) format attached drawing including equipments/ survey boats/manpower etc. complete

To carry out survey for the details of bunds/roads inside the Nhava creek area with their dimensions and top level w.r.t CD of Apollo Sunder in hard and soft (xyz) format etc. complete

The tide data should be collected at five (05) locations namely at (i) Apollo Bundar (ii) Vashi Bridge in Thane creek (iii) Ulwe Bridge in Panvel Creek; iv) At Gavan Jetty & v) New Nhava Jetty (Lat. 18°57'35.68" N; Long. 72°57'39.93" E) inside the Nhava Creek at 10 minutes’ interval for 30 days (Starting from Spring, Neap & Spring cycle) simultaneously and continuously during monsoon as well as non-monsoon season. All the tide levels should be co-related with respect to chart datum of Apollo Sunder including permission and installation of equipments/ survey boats/manpower etc. complete

To carry out current strength and direction with respect to North should be collected at Two (02) locations viz. 1) (Lat.18°57'28.45" N; Long. 72°57'42.42" E) at deepest point near this location; 2) (Lat. 18°59'4.54" N; Long. 72°57'46.47" E) at 10 minutes interval for 15 days period (Starting from spring-neap-spring) at mid depth simultaneously and continuously along with the tide data which will be collected during monsoon and non-monsoon seasons including permission and installation of equipments/ survey boats/manpower etc. complete

To collect suspended sediment concentration (SSC) in mg/lit, salinity and temperature data should be collected at mid depth simultaneously at all the above two (02) current meter locations at one hour interval of time for 24 hours each at spring and neap day for the period during which current data is collected as mentioned in item No. 4 for monsoon and non-monsoon season. The grain size distribution curves for the suspended sediments should be provided at all two (02) locations during monsoon as well as non-monsoon seasons including permission and installation of equipments/ survey boats/manpower etc. complete

The bed samples should be collected at various locations equally spaced along the water area of Nhava creek (minimum 1O locations) and grain size distribution curves should be provided giving information about D50 including permission and installation of equipments/ survey boats/manpower etc. complete

To carry out the detailed dimensioned drawing of the existing pipelines (ONGC pipelines for oil & gas, other utility pipelines etc.) in the Nhava, Panvel & Thane Creek and the depth to which it is buried near the proposed development area in soft (AutoCAD file} and hard format

SKW SOIL AND SURVEY CO (BID ID -3199938)

Indomer Coastal Hydraulics P Ltd (BID ID -3198803)