ARCHIVED REPORTS XR0007814 - Laserfiche WebLink

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SFC 7-089 20 DISCHARGE OF PETROLEUM CONTAMINATED GROUNDWATER It shall be unlawful for any person to discharge petroleum contaminated groundwater to the sanitary sewer collection system of the City of Stockton, except as provided for hereunder, and in accordance with the following conditions and restrictions 1 The maximum allowable concentration of total petroleum hydrocarbons in the discharge entering the sanitary sewer shall be 100 mg/I Compliance with this provision will be enforced by periodic self-monitoring and laboratory analysis by the discharger for total petroleum hydrocarbons over the course of the discharge Sample collection, frequency of sampling, point of discharge, volumetric or seasonal restrictions, or other discharge conditions and limitations will be as specified in the Discharge Permit which shall be issued by the Director of Municipal Utilities 2 Discharges shall not exceed a concentration of 4 57 mg/1 of Total Toxic Organics (as currently listed by the Environmental Protection Agency for categorical electroplating dischargers, 40 CFR 413 02 (e)) Compliance with this provision will be enforced by grab samples obtained no less than once during the permit term Analytical procedures will be in accordance with EPA rules in Guidelines Establishing Test Procedures for the Analysis of Pollutants Final Rule (40 CFR Part 136) Methods 624 and 625 In addition, analysis by the permittee for benzene, toluene, xylene and ethylbenzene (BTXE)will be required at frequencies coinciding with the sampling and analyses for total petroleum hydrocarbons 3 The discharger shall provide a recording Lower Explosive Limit (LEL) monitor Installation well be at a location in the discharge system prior to entry into the sanitary sewer The monitor is to be calibrated in a manner that indicates the percentage of LEL of gasolene and shall be connected to the facility in such a way that an alarm well be triggered at ten percent (10%) of the LEL of gasolene and the entire facility well be automatically shut down The monitor shall be calibrated and maintained with a quality assurance program satisfactory to the Director of Municipal Utilities If, after a period of evaluation, it is determined by the Director or a designated representative that continuous recording is no longer needed, the provision of a recorder may be deleted 4 The Director or a designated representative shall have access to the facility shutdown switch as well as copies of keys to all locked enclosures at the site and shall be provided access to the facility for purposes of inspection 5 The discharger shall provide flow monitoring and recording equipment and sampling taps or equipment in order to comply with these rules 6 The discharger shall ensure that all pretreatment facilities including, but not limited to, flow measuring and LEL monitors, are maintained in proper working order at all times All measuring devices are to be calibrated for accuracy at a frequency as prescribed by the manufacturer of the monitoring device by a qualified technician approved by the Director 7 In the event a required flow measuring device is found to be inoperative or to provide unreliable information as determined by the Director or a designated representative, maximum volumes will be used for belling purposes until such time as the equipment is restored to proper working order and approved by the Department of Municipal Utilities 8 All costs incurred by the Municipal Utilities Department for administration and treatment of the discharge are to be paid for by the discharger according to the rates specified for the commercial category in the schedule of Wastewater Service Fees in effect at the time of the discharge 9 Connection fees for dischargers will be assessed annually in accordance with the rate resolution of the Stockton City Council for the commercial user category, amortized over a thirty (30)year period 10 Any costs incurred by the Municipal Utilities Department for sampling and analysis of the discharge in accordance with the City's Pretreatment Program well be paid for by the discharger 11 All sampling procedures, schedules, and handling provisions must be satisfactory to the Director of Municipal Utilities and all analyses must be conducted by a laboratory certified by the California Department of Health Services for the specific analysis conducted (Added by Ordinance 009-89C S — Effective March 24, 1989)