Groundwater Discharge Permit/One-time Permit
Groundwater Discharge Permit
A groundwater discharge permit is required for remediated groundwater discharges to the City sanitary sewer system. Permits are issued for groundwater remediation projects which discharge to the sanitary sewer over a period of time. A permit application for disposal of treated groundwater into the City sanitary sewer system must be completed and signed by the operator of the treatment system. In addition to the completed application, the following information must be submitted to the Pretreatment and Laboratory Services (PALS) Division, Monitoring Section.
In addition to a one-time baseline analysis of the pollutants listed in40 CFR 122 Appendix D Table II, III and V, PALS requires that monthly self-monitoring be conducted for pollutants of concern determined prior to approval for discharge. The monthly report should also include the monthly volume discharged and is due on the 15th of every month. DWU reserves the right to collect random samples independent of the self-monitoring to ensure that compliance is being maintained. If violations occur, the discharge must cease and corrections to the treatment must be made until compliance is met. More frequent sampling may be required at the expense of the permittee.
A normal sewer rate specified in Dallas City Code Volume II, Chapter 49, Sec 49.18.2 shall be assessed. The rates are based on the meter size and the volume discharged to the sanitary sewer. Additional rates will apply for excessive concentration of conventional pollutants. Dallas Water Utilities may require that excessive discharges into the sanitary sewer system be metered by an approved method. If a connection to the sanitary sewer system is required, please contact the Permit Center Office at (214) 948-4500. To facilitate this process, the following information will be required:
One-Time Groundwater Discharges
One-time discharges are approved on a case by case basis. The following information must be submitted for the one-time discharge of remediated groundwater into the sanitary sewer system:
If results of analytical tests from 40 CFR 122 Appendix D Table II, III and V comply with wastewater discharge limitations established by the Dallas City Code Volume II, Chapter 49, Article IV, Sec 49-43, then approval for one-time discharge to the sanitary sewer system may be granted. Pretreatment and Laboratory Services Division reserves the right to conduct sampling at the expense of the discharger. A final invoice reflecting the cost of sampling and laboratory analysis will be sent to you from Dallas Water Utilities.
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