Wastewater Reporting

Self-Monitoring Report

Environmental AuditEach quarter, permitted industrial dischargers are required to submit a Self-Monitoring Report (SMR) to the LACSD within 15 days from the end of the quarter.  The SMR requires industrial dischargers to complete one full sampling of all parameters specified in the SMR section of their specific discharge permit.  The LACSD distributes a form to each facility required to report, which must be filled out and returned each quarter. Information that must be included with this report includes average and maximum daily wastewater flows, sample day total and peak flows, parameter test result, code identifying testing laboratory, as well as a copy of the laboratory analysis for the SMR sample.

Supplemental Report

Facilities submitting an SMR must also submit a Supplemental Monitoring Data Report to the LACSD within 15 days from the end of the quarter.  The Supplemental Report is used to report additional lab data obtained within the reporting period that is not required to be included with the SMR.  The LACSD distributes a form to each facility expected to report each quarter.  This form details what is expected to be reported for each instance a parameter was sampled, including: parameter name, sample date, sample method, test result, units, reporting limit, code identifying testing laboratory and whether or not the sample was a LACSD split sample (i.e., LACSD concurrently obtained a sample).  The Supplemental report form must be submitted along with a copy of the laboratory analysis for every result detailed on the form.

Pollutant Specific Reporting

Based on LACSD’s judgement, industrial dischargers often are required to monitor additional pollutant levels not required by federal or local wastewater regulations. For example petroleum refiners in Los Angeles County are required to monitor selenium concentrations from each permitted outfall every day that outfall is considered active. Facilities with additional monitoring requirements typically are given monthly average limits that cannot be exceeded.

Benzene reporting is required for gas and petroleum facilities under the Benzene Charge Program, which was created pursuant to Section 423 of LACSD Wastewater Ordinance, Special Charges for Nonconventional Industrial Wastewater Constituents.  This program allows LACSD to recover the cost of controlling benzene emissions from their WWTPs from the discharging facilities.  Dischargers subject to the Benzene Charge Program have minimum benzene sampling requirements based on their average daily flow rate, which range from 1 sample every 4 weeks to 2 samples per week.  The total quarterly benzene discharge is then computed.  Facilities are allowed an exemption of 0.5 pounds per day or 45.5 pounds per quarter.  Any overages incur a charge per pound for the non-exempt portion of the facility’s benzene discharge.

To learn more about wastewater reporting, or to discuss how Davenport Engineering can be an asset to your facility, please contact us today.