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(be) Significant Noncompliance. Significant Noncompliance shall mean an Industrial User is in violation of pretreatment standards under one or more of the following criteria: (1) Chronic violation of wastewater discharge limits, defined herein as those in which sixty -six percent (66 %) or more of all of the measurements taken during a six (6) month period exceed (by any magnitude) the daily maximum limit or the average limit for the same pollutant parameter; (2) Technical Review Criteria (TRC) violations, defined herein as those in which thirty -three percent (33 %) or more of all of the measurements for each pollutant parameter taken during a six (6) month period equal or exceed the product or the daily maximum limit or the average limit multiplied by the applicable TRC (TRC = 1.4 for BOD, TSS, fats, oils and grease (conventional pollutants), TRC = 1.2 for all other pollutants except pH); (3) Any other violation of a pretreatment effluent limit (daily maximum or long term average) that the City determines has caused, alone or in combination with other discharges, interference or pass through (including endangering human health, property or the environment); (4) Any discharge of a pollutant that has caused imminent endangerment to human health, welfare or to the environment or has resulted in the exercise of the City's emergency authority, under 40 CFR Part 403.8(f)(1)(vi)(B), to halt or prevent such a discharge; (5) Failure to meet, within ninety (90) days after the schedule date, a compliance schedule milestone contained in a control mechanism or enforcement order; (6) Failure to provide, within thirty (30) days after the due date, required reports such as permit applications, baseline monitoring reports, periodic compliance reports, periodic self - monitoring reports, and reports on compliance with compliance schedules; (7) Failure to accurately report noncompliance; (8) Any other violation or group of violations which the City determines will adversely affect the operation or implementation of the pretreatment program. (bf) Shall. "Shall" is mandatory. (bg) Slug. Slug shall mean any discharge at a flowrate or concentration that could cause the POTW to violate its NPDES permit. (bh) Standard Industrial Classification (SIC). Standard Industrial Classification (SIC) shall mean a classification pursuant to the Standard Industrial Classification Manual issued by the Executive Office of the President, Office of Management and Budget. (bi) Storm Sewer. Storm Sewer shall mean a sewer which carries storm and surface waters and drainage, but which excludes sewage and industrial waste. 8