Benzene Charge Program
The Sanitation Districts' Benzene Control Program was implemented to control benzene emissions at the Sanitation Districts' Joint Water Pollution Control Plant to meet South Coast Air Quality Management District requirements. Benzene emissions are controlled through the use of carbon filters that must be regularly monitored and maintained. The program requires all significant dischargers of benzene to the Joint Outfall System to pay for the costs of controlling these benzene emissions based on the mass of benzene the company discharges to the sewer.

Combustible Gas Monitoring
The Sanitation Districts' Combustible Gas Monitoring System policy requires all significant potential dischargers of flammable substances to install, operate, and maintain an adequate combustible gas monitoring system. The policy provides the Sanitation Districts and Industry with a method of early detection of any flammable substances discharges so that preventive measures can be taken to avoid loss of life, damage to the Sanitation Districts' sewerage system, and damage to public and/or private property.

Discharge Limits
A listing of limits that apply to all wastewater discharges within the Sanitation Districts' service area.

Dry Cleaners
The Sanitation Districts' Wastewater Ordinance prohibits the discharge of wastewater containing excessive amounts of toxic organics to the Sanitation Districts' sewerage system. It has been determined that separator wastewater from dry cleaners contains excessive amounts of perchloroethylene that may negatively impact Sanitation Districts' facilities. Therefore, all dry cleaners served by the Sanitation Districts, that dry clean garments on-site, are required to certify that they do not discharge separator water directly or indirectly into the sewer (zero discharge) or are required to apply for and, subsequently, obtain an industrial wastewater discharge permit and abide by its requirements.

Dry Weather Urban Runoff Diversion (for agencies only)
To promote better health and safety protection for those who engage in water contact activities in coastal areas bordered by the Sanitation Districts' service area, the Sanitation Districts have consented, where justified, to accept the diversion of dry weather urban runoff into the sewer system. The agencies responsible for the stormwater collection system are required to obtain permits from the Sanitation District, install equipment to remove gross solids, provide the means for measuring flow, and pay appropriate fees.

Flow Measurement
Flow measurement guidelines have been established under Section 414 of the Sanitation Districts' Wastewater Ordinance and require some industrial wastewater dischargers to meter their effluent to provide accurate flow data for surcharge reporting or for other specific purposes as described herein.

Rainwater, Stormwater, Groundwater and Other Water Discharges
The Sanitation Districts' policy on Rainwater, Groundwater and Other Water Discharges specifies that no rainwater, stormwater, groundwater, artesian well water, street drainage, yard drainage, water from yard fountains, ponds or lawn sprays shall be discharged to the Sanitation Districts' sewerage system, except where prior approval has been given by the Chief Engineer and General Manager.

Slug Discharge Control and Spill Containment
This policy provides guidance to Industrial Users to develop and implement plans to prevent the accidental or inappropriate discharge of restricted materials to the sanitary sewer system. This protects public health and safety from hazardous conditions resulting from solvent fumes or the mixing of incompatible materials such as acid, cyanide, and slug discharges that may cause collection system or treatment plant problems such as fire or explosion, corrosion, obstruction, interference, pass-through or excessive heat.

Surcharge Program
This is an annual fee for wastewater collection, treatment, and disposal services. All industrial companies discharging more than one million gallons of wastewater to the public sewerage system during the fiscal year (July 1 through June 30), or have high-strength waste, are required to file and pay an annual Wastewater Treatment Surcharge Statement.

Total Toxic Organics
The Sanitation Districts are required to regulate all companies subject to EPA Electroplating (40 CFR 413), Metal Finishing (40 CFR 433) and Electrical and Electronic Components (40 CFR 469) pretreatment standards. These companies are regulated for Total Toxic Organics (TTO) in addition to a variety of other constituents, and are required to either (1) perform self-monitoring for TTO or (2) implement a Toxic Organic Management Plan and submit a certification statement with each Self-Monitoring Report that concentrated toxic organics are not being discharged to the sewerage system.

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