Section 9 in The Chennai Metropolitan Water Supply and Sewerage Board's Sewerage Regulations, 1988
9. The plumber shall submit at the office of the Technical Office to the Chief Engineer (Operation and Maintenance) in triplicate, as estimate of the work to be done in the prescribed form with a neat sketch showing the proposals clearly and a site plan showing the nearest important Streets and north point, together with an application in the prescribed form duly filled in, with one rupee court-fee stamp affixed to it.
