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June 18, 2007 (Regular Meeting) Page 431 expressly prohibited by this ordinance, without the admixture of surface water and storm water. (52) Severe Property Damage. ~~a=== Substantial physical damage to property, damage to the user's treatment facilities which causes them to become inoperable, or substantial and permanent loss of natural resources which can reasonably be expected to occur in the ' absence of a bypass. Severe property damage does not mean economic loss caused by delays in production. (53) Significant Industrial User (SIU). s~ha~m.~ An `-=^=--`-;' industrial user which discharges non-domestic wastewater into a publicly owned treatment works and which: (i) has an average daily process wastewater flow twenty five thousand (25,000) gallons per day or more; or (ii) contributes more than five (5) percent of any design or treatment capacity (i.e. allowable pollutant load) of the POTW .,~~~ treatment plant receiving the discharge; or (iii) is required to meet a national categorical pretreatment standard; or (iv) is found by WSACC, the Division of Water Quality -^ ^^--,^^'^^°-t or the U.S. Environmental Protection Agency (EPA) to have the potential for impact, either singly or in combination with other contributing industrial users, on the wastewater treatment system, the quality of sludge, the system's effluent quality, or compliance with any pretreatment standards or requirements. (59) Significant Noncompliance status of a user's noncompliance defined as follows: (i) Violations of wastewater discharge limits. A. Chronic violations. Sixty-six percent or more of the measurements exceed (by any magnitude) the same daily maximum limit or the same average limit in a six-month period. B. Technical Review Criteria (TRC) violations. Thirty-three percent or more of the measurements equal or exceed _~or° tl~ the applicable TRC multiplied by t-rmes the dai1V maximum limit or the monthly average limit ______ - - '^'~ in a six-month period. There are two groups of TRCs: For conventional pollutants (BOD, TSS, fats, oil and grease) TRC = 1.9 For all other pollutants TRC = 1.2 For pH any value less than or equal to 9.5 its or greater than or equal to 12.5. C. Any other violation(s).of an effluent limit (average or daily maximum) that the control authority determines ~~ has caused, alone or in combination with other discharges, interference or pass-through; or endangered the health of the ' POTW -`^'"""'` "''ant personnel or the public. D. Any discharge of a pollutant that has caused imminent endangerment to human health/welfare or to the environment a-ad or has resulted in the POTW's exercise of its emergency authority under paragraph (f)(1)(vi)(B) of 90 CFR 903.8 to halt or prevent such a discharge. (ii) Violations of compliance schedule milestones, contained in a pretreatment permit or enforcement order, for starting construction, completing construction, and attaining final compliance by 90 days or more after the schedule date.