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From: Nelson Pi [mailto:npi@wallace-kuhl.com] <br /> Sent:Thursday, March 02, 2017 10:05 AM <br /> To:Steven Shih [EH] <sshih@sicehd.com>;Ted Tasiopoulos [EH] <ttasiopoulos@sicehd.com> <br /> Cc: Kurt Balasek<kbalasek@wallace-kuhl.com> <br /> Subject: RE: Morrill Industries- Nitrogen Study <br /> Hi Steven, <br /> Here are the inputs used for the high estimate based on a total nitrogen concentration of 70 mg/L for domestic <br /> wastewater and 1.91 mg/L for storm water runoff. <br /> Parameter Units East Septic Tank South Septic Tank Rainfall <br /> I volume rate of waste water entering soil gal/yr 21,900 16,425 <br /> nw total nitrogen concentration of waste water mg/L 70 70 <br /> d fraction of nitrate-nitrogen loss unitless 0* 0* <br /> R average recharge rate of rainfall gal/yr 4,180,302 <br /> nb background nitrate-nitrogen of rainfall recharge mg/L 1.91 <br /> *assumed no nitrogen losses due to denitrification <br /> _ Inw(1 - d) + Rnb <br /> nr (I +R) <br /> nr <br /> gal mg gal mg L 6 lb gal <br /> [(21,900 Yr x 70 L) + (16,425 x 70 L )] x(3.789a1 x 2.2x10- mg)x (1 - 0) + (4,180,302 Yr x 1.9 <br /> (21,900 Lal + 16,425 Lal + 4,180,302 al) <br /> Yr <br /> nr = 2.107x10-5 <br /> lb <br /> Tat <br /> Lb mg galmg <br /> n,. = 2.107x10-s gal x 453,592 L6 x 3.78- = 2.53 <br /> It looks like I had a typo in my spreadsheet for the final conversion, resulting in the 3.03 mg/L that was reported. Let me <br /> know if you would like the a revised report submitted to you. <br /> Thanks, <br /> Nelson <br /> From:Steven Shih [EH] [mailto:sshih@sicehd.com] <br /> Sent:Thursday, March 02, 2017 8:55 AM <br /> To: Nelson Pi<npi@wallace-kuhl.com> <br /> Cc:Ted Tasiopoulos [EH] <ttasiopoulos@sicehd.com> <br /> Subject: RE: Morrill Industries- Nitrogen Study <br /> Hi Nelson: <br /> Thanks for the information,Since you are using the Hantzche-Finnemore equation, can you further identify the nr, I, nw, <br /> d, R and nb value in your calculation? <br /> 2 <br />