Completing the Industrial Wastewater Permit Application - TCEQ e ...

Outfall Location Description: Provide a narrative description of the outfall or final point ofdisposal (e.g. Outfall 001; at the outlet weir of the treatment plant prior to entering the river orwhere effluent is land applied via the irrigation system on tract 3).Description of Sampling Points: Provide a narrative description of the sampling point foreach outfall if the sampling point is not at the physical outfall location.Outfall Flow Information - Permitted and Proposed: Provide the daily average anddaily maximum flow information in million gallons per day (MGD) in the spaces provided usingthe permitted flow for existing facilities and the proposed flow for new or amendment permitapplications (e.g., 0.5 MGD daily average and 1.0 MGD daily maximum).Outfall Discharge - Method and Measurement: Indicate with a “Y” or “N” whetherdischarges via the permitted or proposed outfall are through a gravity/flow-through system orwhether discharges are a result of pumping.Provide the type of flow measurement device (e.g., V-notch weir, Totalizer, Parshall Flume) usedor to be used to measure flow from discharge via the permitted or proposed outfall; from thetreatment system to the storage/disposal system for TLAP permits; or from the storage systemto the irrigation system for TLAP permits.Outfall Discharge - Flow Characteristics: Indicate the duration of the discharge inhours/day, days/month, and months/year. Existing permits should base the response onhistorical discharge data. New or amended facilities should base the response on design flowrates and discharge durations. Note: This information should be representative of periods of themaximum volume or duration of discharge anticipated at the facility. If necessary, pleaseprovide additional information to clarify or explain an atypical discharge duration or frequency.Indicate with a “Y” or “N” whether the permitted or proposed discharge is continuous,intermittent, or seasonal.A continuous discharge is defined (40 CFR §122.2) as a discharge that occurs withoutinterruption throughout the operating hours of the facility, except for infrequent shutdownsfor maintenance, process changes, or other similar activities.A seasonal discharge is considered to be a continuous discharge which typically onlyoccurs during a fraction of a calendar year (e.g., a peaking power plant which primarilyoperates and discharges during summer months). The response to this item shouldcorrespond to the information provided for discharge duration.Wastestream Contributions: Provide a list of the wastestreams to be discharged ordisposed of via each outfall. Provide the volume and the percent contribution of the totaldischarge for each wastestream. (Example for a total flow of 1.2 MGD – process wastewater:0.22 MGD/18%; boiler blowdown: 0.18 MGD/15%; once through cooling water: 0.65MGD/54%; sanitary wastewater: 0.15 MGD/13%).5. BLOWDOWN AND ONCE-THROUGH COOLING WATERDISCHARGESa. If the facility uses cooling towers or boilers that discharge blowdown or other wastestreamsto any of the outfall(s), check “Yes.” Otherwise, check “No.”10411_10055-inst (7/14/2014) Instructions for Completing the Industrial Wastewater Application Page 44 of 124