Laserfiche WebLink
3.0 ANALYTICAL RESULTS <br /> 3.1 Summary <br /> Chemical analyses of samples collected during the evaluation were completed using the procedures in <br /> Standard Methods for the Examination of Water and Wastewater and USEPA methods. Copies of the data <br /> generated during the evaluation are included in Appendix C. The results of the analyses performed during <br /> the first week of dosing are also included in Appendix C for informational purposes only. Results of the <br /> chemical analyses and on-site observations and measurements made during the evaluation are summarized <br /> in Table I. <br /> TABLE I. SUMMARY OF ANALYTICAL RESULTS <br /> Interquartile <br /> Avera-gee Std. Dev. Minimum Maximum Median Range <br /> CBODS (mg/L) <br /> Influent 162 100 40 550 130 100 - 180 <br /> Effluent 5 4 <2 25 3 2 - 6 <br /> Suspended Solids (mg/L) <br /> Influent 291 267 34 1600 200 130 - 340 <br /> Effluent 4 5 <2 42 3 2 - 4 <br /> Turbidity (NTU) <br /> Effluent 3.8 1.1 2.0 7.8 3.6 3.0 - 4.4 <br /> pH <br /> Influent - - 6.5 7.6 7.0 6.8 - 7.1 <br /> Effluent - - 6.0 7.2 6.4 6.3 - 6.6 <br /> Temperature (°C) <br /> Influent 16 2 13 20 17 15 - 18 <br /> Effluent 17 3 11 22 18 15 - 19 <br /> Notes: The median is the point where half of the values are greater and halt are less. <br /> The interquartile range is the range of values about the median between the upper and lower 25 percent of all values. <br /> Criteria for evaluating the analytical results from the testing are described in Section 9.5 of ANSI/NSF <br /> Standard 40. In completing the pass/fail determination for the data, an allowance is made for effluent <br /> suspended solids and CBOD5 during the first month of testing. The 30 and 7 day averages during this time <br /> may not equal or exceed 1.4 times the effluent limits required for the rest of the test. This provision <br /> recognizes that an immature culture of microorganisms within the system may require additional time to <br /> achieve adequate treatment efficiency. Effluent CBOD5 and suspended solids concentrations from the <br /> AdvanTex AX20N during the first calendar month of testing were within the normal limits and did not need <br /> to use this provision. <br /> 01/11/2015/060 This report may not be reproduced in whole or in part Page 9 of 46 <br /> Final Report without the expressed written consent of NSF International. April 2002 <br />