CTMP Revision 0 7.4 Appendix D – Bench Testing Results Sheets 1 Introduction Soil samples were taken from the contributing catchments of (insert description of devices and catchment). These two chemicals were tested: (delete any chemical that was not tested) 1. Poly Aluminium Chloride (PAC) 2. Superfloc (a blend of PAC and PolyDADMAC). Bench test flocculation trials were undertaken to determine soil reactivity to chemical treatment in accordance with the Auckland Council Guideline GD05. 2 Bench Test Trials 2.1 Results of PAC Bench Test Initially, bench tests using PAC. The results of the bench tests are as follows. Sample 1, Catchment 1 Initial pH = Initial Turbidity = Aluminium Dose (mg/L) Clarity (mm) after 5mins Clarity (mm) after 30mins Clarity (mm) after 60mins Final pH after 60mins Final Turbidity after 60mins 0 2 4 6 8 10 Sample 2, Catchment 1 Initial pH = Initial Turbidity = Aluminium Dose (mg/L) Clarity (mm) after 5mins Clarity (mm) after 30mins Clarity (mm) after 60mins Final pH after 60mins Final Turbidity after 60mins 0 2 4 6 8 10
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