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Survey table B2 requests information on pH averages for each surface impoundment. Should answers to these questions be based on any specific time periods?

April 26, 2017answers averages b2 impoundment pH requests Survey Table

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Survey table B2 requests information on pH averages for each surface impoundment. Should answers to these questions be based on any specific time periods?

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No, answers should be based on the entire time period that the surface impoundment was used for managing nonhazardous wastewater. For example, the facility should answer “yes” for question 2 if at any point the surface impoundment held wastewater with a 30-day average pH less than 3.