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Hyperion Water Reclamation Plant

Construction Projects


Hyperion Water Reclamation Plant Discharge System Replacement Project

LA Sanitation will repair the effluent pump station, the discharge system of treated wastewater located at the Hyperion Water Reclamation Plant in Playa del Rey.

The effluent pump station treats wastewater and discharges it to the ocean through a five-mile outfall that has been in service since 1961, and through a one-mile outfall that is used only in emergencies and when the five-mile outfall is not in service.

The Project
While both outfalls receive annual inspections of their exteriors, in 2006, an internal inspection of the five-mile outfall was conducted. The results found the outfall in good working condition, but recommended replacement of its header and renovation of its pumps.

LA Sanitation’s engineers and scientists have developed a very thoughtful, sensitive and effective plan to renovate the five-mile outfall to prevent the occurrence of any adverse impacts to public health, beaches and the marine environment during the renovation.

The Timing
The renovation of the five-mile outfall will occur September 21 to October 26. During the five-week renovation project, LA Sanitation will divert the effluent to the one-mile outfall.

Environmental Monitoring
As part of regular practice at Hyperion, LA Sanitation conducts daily environmental monitoring of the effluent discharged to the ocean. During this five-week renovation project, a more rigorous monitoring program will be implemented.

Led by the LA Sanitation Environmental Monitoring Division, the monitoring team includes renowned experts and scientists from NASA’s Jet Propulsion Laboratory, UCSD Scripps Institute of Oceanography, USC, UC Santa Barbara and the Southern California Coastal Ocean Observing System (SCCOOS).

Community Briefing
LA Sanitation will host an informational community briefing.

Wednesday, September 9, 2015
6:30 p.m. to 7:30 p.m.
Environmental Learning Center
Hyperion Water Reclamation Plant
12300 Vista del Mar
Playa del Rey

RSVPs are required as the property is a closed secured site. Please RSVP at bpw.pao@lacity.org or call (213) 978-0333.

Information
For more information about this project:

Please check the site below for project updates and monitoring results:
Southern California Coastal Ocean Observing System (SCCOOS)

Project Fact Sheet

Email
HTPOutfallDiversionProject@gmail.com

L.A. Sanitation Public Affairs Office
(213) 978-0333

24-hour Information and Update Number
(424) 259-3708

L.A. Sanitation – protecting public health and the environment through clean water, solid resources and watershed protection. For more information, visit www.lacitysan.org.

 

Updates on the Hyperion project.
Date Update
11/2/15 Renovation work on the five-mile outfall is complete as of 11:10 p.m.Sunday, November 1. Treated water is again discharged via the five-mile outfall. Environmental monitoring program for the diversion will continue at least two more weeks. 
10/30/15 Bacteral levels from 10/29 met all limits except at Dockweiler, Culver Storm Drain and Redondo Beach Pier. Scientists do not believe these exceedances are due to the diversion work.
10/30/15 Due to the high tide, high surf conditions and potential safety issues, scientific boat work was not conducted today. Standby for further updates. Note that the one-mile diversion will end November 2. The five-mile outfall will return to operations November 2.
10/29/15 Bacterial levels from 10/28 at offshore sampling sites met limits including at the end of the one-mile outfall. Shoreline samples met limits as well except at Topanga Canyon, Santa Monica Pier, Ashland storm drain, Venice Pier, Venice at Topsail, Dockweiler at World Way and Redondo Pier. Scientists hypothesize the high tide and high surf conditions may be shifting storm drain discharge near the shoreline. Scientists continue to monitor.
10/28/15 Bacterial levels from 10/27 met all limits at sampling stations except Windward Avenue, likely from stormdrain discharge, not Hyperion. Very minor phytoplankton blooms were located north and south of the outfall with very low chlorophyll levels. Water around and near the one-mile outfall was murky and olive green in color near and clear blue to clear blue green water offshore. Scientists continue to monitor but water clarity and color do not pose a threat to public health.
10/26/15 As a result of the weather and current conditions, the replacement project's expcted completion is November 2. The project is using the one week contingency allowed by permit.
10/24/15 Bacterial levels meet limits at all shoreline sampling sites in Santa Monica Bay except Windward Avenue in Venice, Redondo Beach Pier and Malaga Cove. All offshore sampling sites including at the end of the one-mile outfall meet bacterial levels. A phytoplankton bloom was located near Pointe Vicente in Palos Verdes. Chlorophyll samples measured very low levels. Waters at and near the end of the one-mile outfall were clear and blue. No phytoplankton blooms were located at the end of the one-mile outfall. Scientists contninue to monitor.
10/23/15 Bacterial levels meet limits at all shoreline sampling sites in Santa Monica Bay excet at Redondo Beach Pier. The waters in the Redondo Beach Harbor are green and clear with very low chlorophyll levels. Monitoring continues.
10/22/15 Bacterial levels meet limits at all shoreline and sampling stations in Santa Monica Bay. Waters from the end of the one-mile outfall to Redondo Beach are clear and blue, but waters in King Harbor in Redondo Beach are brown resulting from a phytoplankton bloom. Sampling results from 10/21 show elevated chlorophyll levels. Scientists are closely monitoring movement, growth and chlorophyll levels. Despite higher chlorophyll levels, there is no harm to public health.
10/21/15 Bacterial levels meet limits at all shoreline and sampling stations in Santa Monica Bay. A phytoplankton bloom was located from the one-mile outfall south to Hermosa Beach and Redondo Beach King Harbor. Chlorophyll levels are elevated. A golden brown agla was detected in Redondo Beach King Harbor south to Point Vicente in Palos Verdes. Scientists will test and remain vigilant in their monitoring efforts.
10/20/15 Bacterial levels meet limits. Phytoplankton bloom located between Hermosa Beach Pier and Palos Verdes Peninsula. Chlorophyll levels are elevated so scientists are closely monitoring levels, bloom movement and growth.
10/19/15 Bacterial levels meet limits. NO exceedances including at shoreline sampling sites. Phytoplankton bloom located on 10/17 north of Marina del Rey and Santa Monica Pier is no longer present in that area and has shown signs of dispersing south near Redondo Beach Pier. The chlorophyll sampling had very low levels. Scientists determine the bloom is flowing with the current and dissipating.
10/17/15 Bacterial levels exceeded at Dockweiler Beach at World Way and Redondo Beach Pier. Bacterial levels were below the limits at all other sampling stations. A phytoplankton bloom was identified between north Marina del Rey and Santa Monica Pier. Scientists found very high levels of chlorophyll in one location and very low levels in all others. This particular phytoplankton bloom coloring is a result of a one-celled organism. Scientists continue to sample, test and change chlorine levels as needed to control bacteria levels and phytoplankton blooms.
10/16/15 Bacterial levels exceeded limits at Manhattan Beach Pier, Hermosa Beach Pier and Redondo Beach Pier. Bacterial levels were below the limits at all other sampling stations. Phytoplankton bloom identified between Venice Peir and the north end of Marina del Rey with low to very high chlorophyll levels. Scientists determine bloom localized but will closely monitor growth and condition.
10/15/15 Bacterial levels exceeded limits at Santa Monica Pier, Dockweiler Beach and Hermosa Beach Pier. Bacterial levels were below the limits at all other sampling stations. Phytoplankton bloom located near Santa Monica offshore of Annenberg Community Beach Center with high chlorophyll levels. Scientists determine bloom to be localized and will monitor closely.
10/14/15 Bacterial levels exceeded limits at Windward Avenue, Hermosa Beach at 26th Street, Hermosa Beach Pier, at the outfall, 200 meters north of the outfall and one mile north of the outfall. Bacterial levels were below the limits at all other sampling stations.
10/13/15 Bacterial levels meet limits. NO exceedances including at shoreline sampling sites.
10/12/15 Bacterial levels exceeded limits at Redondo Beach Pier, Redondo "Box" and Malaga Cove. A large oil slick was observed at an area about 1.5 miles offshore of the southern part of Hermosa Beach near a documented natural oil seep. Phytophankton appeared offshore near Hyperion and Marina del Rey. Scientists found chloraphyll levels ranged from minor to significant. Salinity levels were tested. Scientists hypothesize plume water is increasing along the coast near the outfall as a result of tide and current conditions.
10/10/15 Bacterial levels exceeded limits at three sampling sites: Santa Monica Pier, Windward Avenue and Redondo Beach Pier. Scientists hypothesize exceedances likely are not from outfall, but from discharge from nearby stormdrains. Bacterial levels were below the limits at all other sampling stations. Phytoplankton results find low chlorphyll values. Scientists continue vigilance and monitoring.
10/9/15 Phytoplankton bloom located from Venice to Santa Monica is explanding and moved to north of Santa Monica but intensity levels have decreased to lower than a minor bloom, but scientists continue vigilance and monitoring.
10/8/15 Phytoplankton bloom located between Venice and Santa Monica with higher levels but not considered significant. Scientists will continue monitoring.
10/7/15 Bacterial levels pass. Phytoplankton no longer located in Venice, Marina del Rey or Santa Monica, but half minor bloom located at the end of the one-mile outfall. Scientists continue to test and monitor.
10/6/15 Hyperion personnel hypothesize the source of the debris from last week may be from a pipe that had been out of service for ten years. No further debris has surfaced but scientists and LASAN personnel continue to monitor.
10/5/15 Algal blooms appear near shore in waters between Venice and Santa Monica. Scientists continue to monitor but determine this bloom to be minor.
10/1/15 Beaches remain open. Bacterial level exceedances at three Santa Monica sites: SM Canyon storm drain, SM Pier and the Pico-Kenter storm drain. These are typical and likely not due to the Hyperion diversion because of the distance from the outfall and the proximity to these stormdrains.
9/30/15 Beaches remain open. Bacterial level exceedances at three Santa Monica sites: SM Canyon storm drain, SM Pier and the Pico-Kenter storm drain. These are typical and likely not due to the Hyperion diversion because of the distance from the outfall and the proximity to these stormdrains.
9/29/15 Beaches remain open. Algal growth appears to be decreasing. Samples taken for testing will be reported soon.
9/28/15 Beaches remain open. Crews continue to clean any residual debris on beaches. Algal growth showing near end of one-mile outfall. Scientists continue to monitor. 
9/27/15 Beaches opened in the afternoon. Debris clean up complete.
9/26/15 Beaches remain closed as safety precaution. Bacterial levels are at or below state standards. 
9/25/15 Debris clean up complete. Bacterial levels are below state standards but beaches remain closed as safety precaution. Source of debris still under investigation. 
9/24/15 Debris clean up continue. Bacterial levels are below state standards but beaches remain closed as safety precaution. Source of debris still under investigation. 
9/23/15 Trash and debris was discovered on the shore from Playa del Rey to Dockweiller Beach. Crews began immediate clean up. Source investigation began. County Department of Public Health closed beaches from Playa del Rey to 45th Street in El Segundo. Elevated levels of bacteria were detected in these areas.
9/21/15 Renovation work on the five-mile outfall started. Diversion from five-mile to one-mile began.

 

CONTACT AND INFORMATION
 To report sewer ODORS, click HERE or call (800) 773-2489
 To report sewer SPILLS, call (800) 773-2489
For other questions, call (213) 978-0333
or email bpw.pao@lacity.org
City of Los AngelesDepartment of Public Works
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