Monitoring

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The stored SW in the lagoons shall be analyzed every 15 days. Samples will be taken at the points from where the SW will be withdrawn for irrigation and analyzed for pH, EC,TDS, Ca+, Mg+, Na+, K+, C1, SO4 , CO3+ HCO3, BOD and TKN. Based on these analyses composite irrigation water quality parameters % Na+, adj SAR and RSC, will be calculated.

The physico-chemical characteristics of the soil under irrigation with distillery effluent shall be monitored two times in a year, in April May and October-November periods. One representative sample shall be collected per 50 ha, at 30 and 60 cm depths. The pH and EC of the extract of a mixture of 2 parts of soil and 5 parts of water shall be analyzed regularly. A 20% increase in EC above the background control value shall be a reason for concern. It should not be allowed to increase beyond 4.0 mmhos/cm. The pH of the extract should be less than 8.2 If soil deterioration is indicated a more detailed analysis of the soil should be carried out to determine exchangeable sodium percentage, which should not exceed 15.

The ground water quality will also be monitored two times in a year, in April, May and October-November periods. Samples will be collected from the first water bearing strata from an existing hand pump or by installing one for sampling purpose only. The sampling points will be uniformly spread in the command area at the rate of one station per 50 ha. The samples will be analyzed for BOD Nitrate-N and TDS,. The increase in the existing values of these parameters as a result of irrigation with SW shall not exceed 3 mg/L 10mg/L and 10% or 200 mg/L whichever is less respectively.

At least 5 soil and water quality monitoring stations shall be located in areas where SW irrigation is not practiced. These will be called control stations.

In the event of first observation of any of the soil and ground water monitoring parameters exceeding the prescribed limits, the effluent application shall be stopped immediately and the distillery shall inform the SPCB accordingly. The distillery shall be solely responsible for reclaiming the soil and water quality at their cost and make good any damage.

All stations shall be monitored regularly and continuously even in the years when the fields are under rest.