minimal restoration of pond at vadaperumbakkam in dn-17, unit-4, zone-02.- 1 cutting and cleaning heavy jungle (bd- 300) 2 dewatering using 7.5hp diesle engine pumpset including hire charges, cost of diesel , engine oil, pump operator.(wd- w0906) 3 hiring charges hydraulic excavator (poclain - 200 or equivalent) for minimal restoration of pond including widening of the pond, deepening of the pond, formation of bund and dewatering etc.. 4 supplyingand delivery of hdpe pipe for severage pe10 pn6 confirming to is :1433/1966 (wd-m0948) etc.. 5 supplyingand delivery of hdpe pipe for severage pe10 pn6 confirming to is :1433/1966 (wd-m0949) etc.. 6 construction of inspection chambers of following sizes 60 x 60 x 150cm with earth work excavation for foundation, 23cm thick concrete bed using 40mm brick jelly concrete in c.m.1:4:10 for foundation, brick work in c.m.1:6 for chamber, plastering with c.m.1:3, 12mm thick, benching, channelling, supplying and fixing 45x45cm frc cover and frame, etc., complete