In response, the UPPCB, while tendering an unconditional apology for delay in submitting the ATR, submitted a 549-page report to the principal bench of the NGT.The state pollution control board mentioned in its report that the Prayagraj-based executive engineer of UP, Jal Nigam (urban), informed in a letter dated February 15 that till date all the sludge was being accumulated in the geo-tubes only and it would be extracted only when the geo-tubes would be fully filled.The report also claimed that as per the analysis of reports of Sewage Treatment Plants (STPs) and geo-tubes, the parameters were found to be conforming the permissible norms of water purity.It further said that the water quality monitoring data of dissolved oxygen (DO), Biochemical Oxygen Demand (BOD), faecal coliform indicated that water quality of both Ganga and Yamuna in Prayagraj was achieving the primary water quality criteria except Shastri bridge which indicated an increase on BOD and Faecal coliform.
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