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0 <br />A, TERMS AND COIdDI'CIOIJS (Continued) <br />4. Footnotes <br />0 <br />PART I <br />Page 4d of 17 <br />Permit No.: CO-0027154 <br />a/ This limitation shall 6e determined by the arithmetic mean of a <br />minimum of three (3) samples taken on separate weeks in a 30-clay <br />period (minimum total of three (3) samples); <br />b/ This limitation shall be determined by a single properly <br />preserved sample as required under monitoring requirements - <br />Sample Type; <br />c/ tonitoring is required only during periods of discharge. If "nn <br />discharge" occurs, this shall be reported at [he specified <br />frequency. (See Part B); <br />d/ Should a discharge occur due to snowmelt or a rainfall event, <br />sampling of all parameters shall be done as a minimum at the <br />beginning and at the end of the discharge. <br />e/ See definitions, Parc B. <br />fi When the measurement frequency indicated is quarterly, the <br />samples shall be collected during t~tarch, June, Se;,tember, and <br />December if a continual discharge occurs. If the discharge is <br />intermittant, then samples shall be collected during the period <br />that discharge occurs. <br />g/ Salinity shall be measured as Total Dissolved Solids (TDS) or <br />electrical conductivity where a satisfactory correlation i:itli <br />TDS has been established [o the satisfaction of the Ida ter <br />Quality Control Division, based on a minimum of five (5) <br />samples. Samples shall be taken at the permitted discharge <br />point. <br />h/ Salinity sh211 be sampled on a monthly basis until six samples <br />have been analyzed. Thereafter, monitoring shall continue on a <br />quarterly basis. Following submittal of the first six months of <br />data, the Division shall determine eligibility of a waiver of <br />numeric limitations based on salt-loading. If a waiver is no[ <br />granted, the permittee has un additional six months Co submit a <br />report addressing sal[ removal in accordance with Regulations <br />3.10.0-3.10.5 and Appendix A. <br />i/ Procedure for determining settleable solids is contained in 40 <br />CFR 434.64. The method detection limit for measuring settleable <br />solids under this part shall be 0.4 ml/1. <br />jJ Should a precipitation event occur »hic6 is greater than the <br />10-year, 24-hour event, the permittee shall have the option of <br />submitting documentation that precipitation was greater than the <br />10-year, 24-hour event. In lieu of such documentation, <br />limitations contained in Part I.A,2.b, or Part I.A. S. b., shall <br />apply, This data shall be reported as an a[tachinent to <br />Discharge Monitoring Report (D"iR). <br />Pfodified , /7 ~~ <br />