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CITY OF STOCKTON <br /> PRETREATMENT INDUSTRIAL USERS <br /> GENERAL PERMIT CONDITIONS <br /> ( Revised April 2017 ) <br /> 1 . <br /> Permittee shall not allow any materials or any liquid waste to be discha ged into <br /> the for <br /> ty <br /> of Stockton sewer system which could be harmful to the system <br /> or eatenuisance , as defined in sections 13 . 08 . 100 thr o gckton Municipal <br /> s ble for damage to hh 13 . 08 . 290 of the e City of Stockton <br /> Code ( SMC ) . If the permittee is found to be resp <br /> on <br /> or sanitary sewer system , or for the <br /> eexcessive bear he cost to to bhe tCity boe <br /> materials in said systems , permittee may brequired <br /> cleaning , or shall restore the affected part <br /> °ond tionsf the teocal codes , s at m to proper w eorkin odes ) federal <br /> violation of any provision of these permit <br /> codes or Federal Pretreatment Regulations may result in civil and /or criminal actions and <br /> fines of up to $ 25 , 000 per calendar day for each violation <br /> 2 _ Permittee shall not allow any pollutants , including oxygen demanding pollutants ( BOD , <br /> TSS , etc . ) to be released at a flow rate andln rference to thenPublicly O ned Treatment <br /> knows , or has reason to know , will cause <br /> Works ( POTW ) . In no case , shall a sudden , unexpected discharge have a flow rate or <br /> contain concentrations of qualities of pollutants that exceed for any time period <br /> iesongor flow <br /> than <br /> 15 minutes more than five times the average 24-hour concentration , q <br /> during normal operation ( SMC 13 . 08 . 100 ) . <br /> 3 . Permittee shall insure that all pretreatment facilities , including but onot� limitaeddto flow , <br /> P g <br /> temperature and lower explosive limit ( LEL) measuring , recdg <br /> that <br /> equipment , are operational and maintained in properi 9 defy gesraee certifieat all ld for accuracy <br /> by <br /> flow , pH , temperature and LEL measuring a <br /> nd by an approved qualified licensed technician months , or more discharge and then at a d by the <br /> minimum frequency of once per six mon <br /> manufacturer of the monitoring device , oe mesentave frequently required b <br /> easo Seasonal industries shall hay this permit ve the <br /> City of Stockton Environmental Control r p <br /> devices certified prior to the start of each sea e relating <br /> report <br /> ng <br /> equipment calibration and certification shall be included n th <br /> the time period in which the work was performed . <br /> 7 . 0 and 10 . 0 buer <br /> Permittee shall calibrate all pH monitoring equipment using PH 4 ' <br /> 01 <br /> 4 . Environmental Control <br /> solutions at a minimum frequency of once per day , or as directed y <br /> staff . Permittee shall perform calibration procedures Assurance Manual for Self4onCo ed0Indity of oustries . <br /> Department of Municipal Utilitiescktons <br /> , Quality <br /> The pH meter and recorder shall be calibrated e ent within 0 . 1 <br /> 1performing the calibration PH unit of each sh o <br /> and 10 . 0 buffer solutions . The permittees representative <br /> record the date and time of calibration on the pH recording chart and shall initial the entry . <br /> If continuous pH monitoring is required by this permit , and unless arhwii se all di wte the <br /> 5 ' permittee shall ensure that the disc g <br /> e <br /> Environmental Control staff , <br /> sanitary anitar sewer shall automatically and immediately cease upon the occurrence of a pH <br />