2018-10-22_REVISION - M2008078 (12)

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Appendix C Page 65 of 67 Permit No.:COG500000 .50 2.84, 2.931 3.00 3.10 3.19 3.29, 3.43 I 3.54 3.72! 3.87 4.11 4.30 .751 2.17 2.24 1 2.29 2.37 2.43; 2.51 2.62 I 2.70 2.841 2.95 j 3.14 3.28 1.00 1.79 1.85' 1.89 1.96 2.01 2.09: 2.16! 2.23: 2.35 2.44: 2.59 2.71 1.25E 1.54' 1.59 1.63' 1.68- 1.731 1.78 1.86: 1.92 2.021 2.10' 2.23 2.33 1.50 1.37 1.41, 1.44, 1.49 1.53; 1.58 1.65 1.70 1.79 1.86 1.97 2.07 1.75' 1.23 1.27 1.30i 1.35 1.38 1.43 1.49' 1.54 1.621 1.68 i 1.78 1.86 2.00 1.13: 1.16. 1.19i 1.23 1.261 1.31 i 1.36 1.40 1.48' 1.54: 1.63 1.70 2.25: 1.04: 1.08: 1.10€ 1.14 1.171 1.21 I 1.26 1.30' 1.37; 1.42, 1.51. 1.58 2.50; 0.971 1.00: 1.02 1.06 1.091 1.12 1.17 1.21 a 1.27; 1.32 1.40: 1.47 j 3.00'. 0.85: 0.89 0.91 0.94E 0.96 1.00* 1.04: 1.07. 1.13 1.17 1.24 1.30 3.50 I 0.78 0.80 0.82' 0.85E 0.87 0.90' 0.94 0.97' 1.02: 1.06 1.12 1.17 4.00 0.71 0.73' 0.75: 0.78I 0.801 0.82: 0.86 0.88 0.93• 0.97 1.03' 1.07 4.50 0.661 0.68: 0.69: 0.72! 0.74E 0.76, 0.79 0.82` 0.86' 0.90 0.95' 0.99 5.00 0.61 0.63 0.65 0.67 0.69 0.711 0.74 0.76? 0.80' 0.83' 0.88 0.93 7.00 0.49 0.50 0.52 0.53 0.55 1 0.571 0.59 0.61' 0.64 0.67! 0.71 0.74 3 10.00; 0.39 0.40 0.41' 0.42' 0.43 0.45! 0.47! 0.48: 0.51E 0.53' 0.56: 0.58 i 20.00' 0.24' 0.25: 0.26 0.26 0.27i 0.28; 0.29 0.30' 0.32! 0.33. 0.35 0.37 30.00' 0.18 i 0.19E 0.20 0.20 0.21` 0.21 0.22. 0.23, 0.24E 0.25 0.27 0.28 1 Adapted from Suarez(1981). 2 Assumes a soil source of calcium from lime(CaCO3)or silicates; no precipitation of magnesium,and partial pressure of CO2 near the soil surface(Pc02)is 0.0007 atmospheres. 3 Ca., HCO3,Ca are reported in meq/l; EC is in dS/m (deciSiemens per meter). Because values will not always be quantified at the exact EC or HCO3/Ca" ratio in the table, the resulting Cax must be determined based on the closest value to the calculated value. For example, for a calculated EC of 2.45 dS/m, the column for the EC of 2.0 would be used. However, for a calculated EC of 5.1, the corresponding column for the EC of 6.0 would be used. Similarly,for a HCO3/Ca"ratio of 25.1,the row for the 30 ratio would be used. The Division acknowledges that some effluents may have electrical conductivity levels that fall outside of this table, and others have bicarbonate to calcium ratios that fall outside this table. For example,some data reflect HCO3/Ca"ratios greater than 30 due to bicarbonate concentrations reported greater than 1000 mg/I versus calcium concentrations generally less than 10 mg/I (i.e., corresponding to HCOs/Ca"ratios greater than 100). Despite these high values exceeding the chart's boundaries, it is noted that the higher the HCO3/Ca"ratio, the greater the SAR-adj. Thus, using the Cax values corresponding to the final row containing bicarbonate/calcium ratios of 30, the permittee will actually calculate an SAR-adj that is less than the value calculated if additional rows reflecting HCC3/Ca*'ratios of greater than 100 were added. 42. "Seven(7)day average"means,with the exception of fecal coliform or E. coli bacteria(see geometric mean),the arithmetic mean of all samples collected in a seven(7)consecutive day period. Such seven(7)day averages shall be calculated for all calendar weeks,which are defined as beginning on Sunday and ending on Saturday. If the calendar week overlaps two months (i.e.the Sunday is in one month and the Saturday in the following month),the seven(7)day average calculated for that calendar week shall be associated with the month that contains the Saturday. Samples may not be used for more than one(1)reporting period. (See the"Analytical and Sampling Methods for Monitoring and Reporting Section in Part I.D.3 for guidance on calculating averages and reporting analytical results that are less than the PQL). 43. "Significant spills and leaks"-include, but are not limited to, releases of oil or hazardous substances in excess of quantities that are reportable under CWA Section 311(see 40 CFR 110.6 and 40 CFR 117.21)or Section 102 of the Comprehensive Environment al Response,Compensation and Liability Act(CERCLA),42 USC§9602.This permit does not relieve the permittee of the reporting requirements of 40 CFR 110,40 CFR 117,and 40 CFR 302 relating to spills or other releases of oils or hazardous substances.