76 a. NAGpH no less than 4; and, b. NAPP is equal to or less than 0, where NAGpH is the pH of the solution produced from a Net Acid Generation test, NAPP is Net Acid Producing Potential (MPA-ANC), MPA is total Maximum Potential Acidity, and ANC is total Acid Neutralising Capacity. 7 For rainfall events less than or equal to the 2-year return period, the SFA Detention Pond discharges shall: a. Contain no oil or grease; b. Have a suspended solids concentration of no greater than 100 g/m3; and c. Have a pH within the range of 6.0-9.0 pH units. 8 The Consent Holder shall monitor pH and suspended solids in the SFA Detention Pond discharge on a monthly basis for the purpose of defining the impacts of the SFA Detention Pond discharge on the receiving water. The results of the monitoring shall be forwarded on a quarterly basis to Waikato Regional Council.
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