bids are invited for custom bid for services - sample of untreated water etp inlet water analysis to be tested by gpcb approved laboratory and report to be submitted to gpcb railway once in every 4 month ie 3 samples in year , custom bid for services - sample of treated water etp outlet water analysis to be tested by gpcb approved laboratory and report to be submitted to gpcb railway once in every month ie 12 samples in year , custom bid for services - ambient air monitoring on 72 hourly basis ie 10 samples every month as per national ambient air quality and cpcb gpcbs latest parameter for iso 140012004 enms , custom bid for services - noise level monitoring 02 samples on alternate 15 days in every month as per ambient air quality standard in respect of noise cpcbgpcbs latest parameter for iso 140012004 enms one sample means every hour one recording of no.. , custom bid for services - etp sludge analysis as per cpcb gpcbs latest parameter for iso 140012004 enms 01 sample in every three month ie 04 samples in year testing of water quality testing of water quality testing service for on-board /commissioned equipment/ instrument related to plant testing service for on-board /commissioned equipment/ instrument related to plant testing service for on-board /commissioned equipment/ instrument related to plant total quantity :