Laserfiche WebLink
Page 1 of 2 <br />Michelle Henry [EH] <br />From: Raymond von Flue [EH] <br />Sent: Tuesday, April 19, 2011 2:48 PM <br />To: Michelle Henry [EH] <br />Subject: FW: Septic Tank pH values for PSI in Tracy <br />From: Rodney Estrada [EH] <br />Sent: Tuesday, April 19, 2011 9:34 AM <br />To: Raymond von Flue [EH] <br />Cc: Kasey Foley [EH]; Willy Ng [EH] <br />Subject: FW: Septic Tank pH values for PSI in Tracy <br />From: Timothy O'Brien [mailto:tobrien@waterboards.ca.gov] <br />Sent: Friday, April 01, 20114:21 PM <br />To: Rodney Estrada [EH] <br />Subject: RE: Septic Tank pH values for PSI in Tracy <br />Rodney, <br />I think the approach will be to put an informal limit on them. If they don't comply with the limit, then we can take <br />another look at writing WDRs for the site or require them to connect to the city system. I would like to see the pH <br />become a stable discharge so they aren't constantly shocking the septic tank with pH swings. Who knows, by <br />now they may have some superbug in their tank that can handle the pH swings. Anyway, if they can't mimic <br />domestic wastewater by controlling their pH, they are probably headed for WDRs. I did explain to them that if <br />they got WDRs, the first thing we would require is pH control. So they'll have to do it either way. They seemed <br />to understand the situation. <br />TRO <br />>>> "Rodney Estrada [EH]" <restrada@slcehd.com> 4/1/2011 4:05 PM >>> <br />Tim, <br />The range is acceptable, however I am not sure if we have ever actually restricted discharge of our systems <br />before. The range for physical and chemical characteristics of domestic septage published in the USEPA <br />1994 manual is fairly broad @ 1.5 pH- 12.5 Ph., thanks. <br />Rod <br />From: Timothy O'Brien[mailto:tobrien@waterboards.ca.gov] <br />Sent: Friday, April 01, 2011 11:06 AM <br />6/15/2011 <br />