HomeMy WebLinkAbout09.a. Accept the 2011 National Pollutant Discharge Elimination System (NPDES) ReportCentral Contra Costa Sanitary District
BOARD OF DIRECTORS �� •
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POSITION PAPER
Board Meeting Date: January 26, 2012
Subject: BOARD ACCEPTANCE OF THE 2011 NATIONAL POLLUTANT
DISCHARGE ELIMINATION SYSTEM ANNUAL REPORT
Submitted By: Initiating Dept. /Div.:
Mary Lou Esparza Plant Operations Department
Provisional Laboratory Superintendent
REVIEWED AND RECOMMENDED FOR BOARD ACTION:
M. L. sparza M. Orr . Farrell J e . Kelly,
G neral Manager
ISSUE: The Central Contra Costa Sanitary District's (District) 2011 National Pollutant
Discharge Elimination System (NPDES) Annual Report has been prepared for
submission to the California Regional Water Quality Control Board (RWQCB),
San Francisco Bay Section. This annual report is presented to the Board of Directors
for information and acceptance.
RECOMMENDATION: Accept the 2011 NPDES Annual Report.
FINANCIAL IMPACTS: None
ALTERNATIVES /CONSIDERATIONS: None
BACKGROUND: During 2011, the plant received a total of 15.3 billion gallons of
wastewater, which equates to an average flow of 41.8 million gallons per day. This
average flow is approximately 3 percent higher than in 2010. The plant produced an
effluent with annual average carbonaceous biochemical oxygen demand (C -BOD) and
total- suspended solids (TSS) concentrations of 6 mg /L and 8 mg /L, respectively. These
concentrations are markedly lower than our NPDES permit standards of 25 mg /L and
30 mg /L, respectively. Both C -BOD and TSS removal efficiency for the plant averaged
97 percent. Solids disposal during the year involved the incineration of dewatered
sludge in the District's multiple -hearth furnaces. Approximately 3,589 tons of furnace
ash was produced. The ash met regulatory requirements for final disposal as an
amendment to a commercial product throughout the year.
More than 15,000 permit- required tests were completed to comply with the NPDES
permit. The plant effluent met all (100 percent) of the NPDES permit requirements
throughout the year, which makes this the fourteenth consecutive year of full
compliance.
N: \POSUP \Board of Directors \Board - Position Papers \2012 \NPDES Annual Report 01- 26- 12.doc
POSITION PAPER
Board Meeting Date: January 26, 2011
Subject: BOARD ACCEPTANCE OF THE 2011 NATIONAL POLLUTANT
DISCHARGE ELIMINATION SYSTEM ANNUAL REPORT
The District's NPDES permit was amended by the RWQCB on March 1, 2010. The
required components of the annual report were part of that amendment and are as
follows.
Since the inception of NPDES permits, the Annual Compliance Summary has
been provided in tabular and graphic form to the Board. The Amendment
received indicates that data is no longer required as part of the Annual Report if
the reporting entity has provided their data using the electronic reporting system.
Providing the data in the Annual Report is not an automatic function of the
systems in place, but in large part, is manually accomplished. Staff has
summarized the tabular data as part of the 2011 NPDES report but the official
data are in the State Water Board electronic reporting system.
• A comprehensive discussion of plant performance and compliance with the
permit. This includes a statement about all projects that were completed to
improve performance and reliability of the District's wastewater treatment,
collection and disposal practices in 2011.
• List of Approved Analyses.
■ Plant schematic.
• A statement that all storm water at the plant is treated as it was.
• Annual review of Facility Reports. The District must certify that the District
operates and maintains its wastewater collection, treatment, and disposal
facilities to ensure that all facilities are adequately staffed, supervised, financed,
operated, maintained, repaired, and upgraded as necessary to provide adequate
and reliable transport, treatment, and disposal of all wastewater from both
existing and planned future wastewater sources within the service area.
Upon acceptance of this annual report by the District Board of Directors, it will be
submitted to the RWQCB. The NPDES permit requires the Annual Report be
submitted to the RWQCB by February 1, 2012.
RECOMMENDED BOARD ACTION: Accept the 2011 National Pollutant Discharge
Elimination System Annual Report.
N: \POSUP \Board of Directors \Board - Position Papers \2012 \NPDES Annual Report 01- 26- 12.doc