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Page 2 of 2 <br />To: Rodney Estrada [EH] <br />Subject: Septic Tank pH values for PSI in Tracy <br />Rodney, <br />Some documents I have here indicate septic tank effluent should be in the pH range of 6.5 to 7.2. That is <br />a pretty narrow range. I thought I'd allow 6.5 to 7.5 unless you have some objection to that range. Please <br />let me know. <br />TRo <br />6/15/2011 <br />