REPAIR/ REPLACEMENT OF FILTER MEDIA AND CONNECTED WORKS OF IRP AT VARIOUS PUMP HOUSE AT MIL STN AGARTALA

Amount

Schedule'A' Part-I: External Water Supply works

Taking down existing Rapid Sand Filter house of complete layers through inspection in existing Rapid Sand Filter with suitable tools for disposal of filter all as specified and directed

Material and labour for cleaning of existing aeration tower by carrying out the following works all as specified and directed:(i) Removing the sludge, Muddy and dissolved iron water from the aeration tower, water path by man power(ii) Scrubbing the algae from walls, corners etc completely by using wire brush & Man power.(iii) Washing the walls, bottom and all corners by bleaching powder.Note : Bleaching powder will be supplied by the contractor

Material and labour for cleaning of existing Sedimentation tank by carrying out the following works all as specified and directed. (i) Removing the slidge, mud and dissolved iron water from the sedimentation tank (ii) Scrubbing the algae from the walls corners etc completely by using wire brush all as specified and directed.Note : Bleaching powder will be supplied by the contractor.

Material and labour for cleaning of existing clear water sump by carrying out the following works all as specified and directed. (i) Removing the slidge, mud and dissolved iron water from the clear water tank (ii) Scrubbing the algae from the walls corners etc completely by using wire brush all as specified and directed.Note : Bleaching powder will be supplied by the contractor.

Taking down existing Filter media catalytic of complete layers through inspection / man hole door provided in existing IRP by crawelling / showelling with suitable tools for Iron Removal Plant including disposal of media all as specified and directed

Taking down existing Filter media catalytic of complete layers through inspection door provided in existing Oxidation Chamber by crawelling / showelling with suitable tools for Oxidation Chamber including disposal of media all as specified and directed

M&L Cleaning for inside shell by brushing , flusing including taking out existing PVC push fit type strainers fitted in Disc & Bed plate of IRP all as specified and directed . Note : Welding / Bracing / patching for disc & bed plate if required to make good shall be included in rate quoted for item

M&L Cleaning for inside shell by brushing , flusing including taking out existing PVC push fit type strainers fitted in Disc & Bed plate of Oxidation chamber all as specified and directed . Note : Welding / Bracing / patching for disc & bed plate if required to make good shall be included in rate quoted for item

M&L for one coat of black bituminus paint on inside shell complete for IRP and Oxidation chamber by using brush of approved paint all as specified and directed .

Supply and fixing new PVC push fit type strainer on complete disc & bed plate for IRP and Oxidation chamber of approved make all as specified and directed.

M&L for filling Catalytic media in IRP, Oxidation Chamber and Rapid sand filter as per OEM recommended layer procedure for specific approved catalytic size and material of following :- (i) 6"/150 mm of 20 x 30mm gravels. (ii) 4"/100 mm of 12 x 20 mm gravels . (iii) 4"/100 mm of 06 x 12 mm gravels. (iv) 4"/100 mm of 03 x1.5 mm gravels. (v) 6"/150 mm of 16 x32 mesh sand. (vi) 6"/150 mm of 1" x 1/2" manganese di oxide. (vii) 18" /450mm of 10-32 mesh sand Note : Manganese di oxide (Mno2) shall be measured and paid under Sr No 12 here in after

M&L for filling Manganese di oxide (Mno2) of approved make as per OEM recommended layer procedure for IRP , Oxidation Chamber and Rapid Sand Filter all as specified and directed.

Supply, installing and testing cast iron sluice valve, class PN-1.6, ISI marked conforming to IS-14846 complete suitable for 100 mm bore pipe with flanged ends duly drilled, brass spindle, CI gate with brass rings and iron wheel head including new rubber gaskets and nuts, bolts & washers including dismantling unserviceable sluice valve and removing from site of work complete all as specified and directed

All as per item No-13 here in before but for 80 mm bore.

NOTES :- 1. The amount of schedule of credit shall be deducted from the total of this BOQ for arriving at contract sum. 2. Unless otherwise specified the rates for PCC shall deemed to include the cost of formwork shuttering etc, required for complete and proper execution of the work. Refer Schedule 'A' notes for details.

M/S Ajoy Acharjee

SHRI RAJESH DEY

M/S SANKAR GOPE