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04/10/2018
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04/10/2018
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Last modified
1/11/2021 3:19:35 PM
Creation date
5/2/2018 1:31:34 PM
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Meetings
Meeting Type
BCC Regular Meeting
Document Type
Agenda Packet
Meeting Date
04/10/2018
Meeting Body
Board of County Commissioners
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C. Ortho -Phosphate Results <br />Figure 13 shows ortho-phosphate sample results. The average ortho-phosphate <br />contribution from the pipe discharge is minimal and the ortho-phosphate <br />concentration in the deep settling pond is insignificant. Ortho -phosphate begins <br />to rise significantly after Sample Point PSP, reaching a maximum value at <br />Sample Point C. After that the concentration drops but rises again between <br />Sample Points D and E. The average ortho-phosphate concentration at the <br />discharge into the Lateral C Canal is only about 1.1 times greater than that <br />discharging into the Lateral C Canal from the east at Sample Point F. The <br />steady decrease in ortho-phosphate between Sample Points C and D may be <br />due to uptake by aquatic vegetation in the canal and/or dilution from other canal <br />inputs. The possibility of additions from the WRWWTF's influent sewage force <br />main or the pipe's air release valve have been eliminated from consideration. <br />0.15 <br />O -P (mg/1) <br />0.10 <br />0.05 <br />0.00 <br />Figure 13 — ORTHO-PHOSPHATE RESULTS <br />[the remainder of this page was left blank intentionally] <br />16 <br />FAPublic Works\KeithM\Stormwater Projects\IRFWCD 8th Street Canal Water Study\Memo 2 - 8th Street Canal.doc 47 <br />SAMPLE OATS A <br />PSP <br />B <br />DSP <br />C <br />D <br />E <br />F <br />7/20/2017 0.038 <br />0.026 <br />0.073 <br />0.008 <br />0.110 <br />0.069 <br />0.140 <br />0.099 <br />8/11/2017 0.088 <br />0.034 <br />0.160 <br />0.013 1 <br />0.180 <br />11111110.09511111 <br />0.120 <br />0.110 <br />0.130 <br />AVERAGE 10.0630 E0.0302100.114 *0X111 !0.145■ ■0:1251 507115■ <br />[the remainder of this page was left blank intentionally] <br />16 <br />FAPublic Works\KeithM\Stormwater Projects\IRFWCD 8th Street Canal Water Study\Memo 2 - 8th Street Canal.doc 47 <br />
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