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Ongoing investigations, which included grab sampling of all incoming septage, porta-potty and grease <br />haulers for a period of 10 days in late March/early April 2017 at the RDF has confirmed that elevated <br />loading rates are entering the RDF prior to dewatering. After processing, the RDF liquid side stream <br />(centrate) flows to the WRWWTF and makes up a portion of that plant's influent (see Figure 2). IRCDUS's <br />industrial pretreatment limits nitrogen to 40mg/L, yet we have received loads of 4,000 mg/L. IRCDUS's <br />phosphorus limits are 20 mg/L, and we have received loads as high as 590 mg/L. <br />2. <br />Septic Hauler Total Nitrogen and Total Phosphorus <br />April 1-24, 2017 <br />4000 <br />3500 <br />3000 <br />2500 <br />J <br />to 2000 <br />E <br />1500 <br />1000 <br />500 <br />0 <br />Total Nitrogen Total Phosphorus Nitrogen Limit Phosphorus Limit <br />Page 2 of 8 <br />C:\Users\GRANIC-I\AppData\Local\Temp\BCL Tech nologies\easyPDF 7\@BCL@60050827\@BCL@6005C827.docx <br />P216 <br />