Week of May 14, 2012

Crews continued with the yard piping near the new clarifiers this week.  Work also progressed on the lighting and electrical services at the multiple pump station.  Pile driving for the new sewer pipeling in Riparian View continued.  This work is planned through next week.  At the conclusion of the sewer pipeline pile driving, crews will then switch to pile driving for the flood wall, also located on Riparian View.  Pile driving is planned through June 2012.  In order to remain on schedule, crews will pile drive on Riparian View on Saturday, May 19 from 9:00 a.m. to 5:00 p.m.  This work is in compliance with the local municipal code, which allows construction activities between the hours of 9:00 a.m. and 6:00 p.m. on Saturdays.

Week of May 7, 2012

Gates and actuators were installed at the new headworks structure.  Pile driving on Riparian View commenced this week and while during the second day, crews experienced conflicts with existing utilities.  Therefore, pile driving activities ceased mid-week and is expected it will resume next week after staff makes alignment adjustments.

Week of April 30, 2012

Crews began the seven day water test on the primary sedimentation tank's influent channel.  The pile driving on Riparian View recommenced this week.  Work will continue at this location through June 2012.

Week of April 23, 2012

This week crews installed the fine screens on the membrane biorector, continued with the yard piping at the new headworks structure, poured the west side wall on the headworks building and successfully completed a 12-hour shutdown of the existing chlorine contact tank will new connections were made.  Pile driving on Riparian View is scheduled to begin next week.  A change in the sewer line alignment caused the slight delay.  Pile driving will continue for six weeks.

Week of April 16, 2012

The pile driving on Riparian View, originally scheduled to begin this week, has been deferred to the week of April 30.  This pile driving is expected to continue for six weeks.

Week of April 2, 2012

Crews continued coating the new primary sedimentation tank.  Piping was also installed between the headworks building and the disinfection building.  The electrical crews began adding lighting for the multiple pump station building.  The 30-day test of the ultra-violet facility continues through next week.  Pile driving on Riparian View is scheduled to begin the week of April 16 and is expected to continue through mid-May.

Week of March 26, 2012

Construction activities were similar to last week as crews continued working on all new facilities.  The current construction schedule shows pile driving on Riparian View resuming the week of April 16.

Week of March 19, 2012

Crews continued installing mechanical screens and finishing gates at the new headworks structure.  Doors were also installed on the headworks building and windows are scheduled to be installed next week.  The start-up of the high rate clarifier continued this week.  The sewer piles were installed this week.  Piles are being casted (made) over the next couple of weeks and pile driving on Riparian View is expected in mid-April.

Week of March 12, 2012

Six pumps for the membrane biorector (MBR) building arrived this week.  A second hydraulic test on the fine screen area within the MBR was on-going this week.  The crews began working on the HVAC (air conditioning) for the multiple pump station building.  Crews continued with the start-up procedures at the high rate clarifier.  Sewer pile driving on Riparian View is scheduled for next week.

Week of March 5, 2012

Pumps for the new membrane biorector building were shipped and expected to arrive next week.  At the new headworks structure, crews completed the installation of mechanical bar screens.  Over at the multiple pump station, crews installed facility roofing.  The 30-day test of the ultra-violet facility continued.  Crews completed the first round pile driving behind the plant this week.  These were some of the largest piles (90 feet) installed.  The second round of piles behind the plant are scheduled for next week.  In two weeks, crews will return to Riparian View to begin driving the remaining sewer piles.

Week of February 27, 2012

Masonry continued installing block walls at the new headworks building.  The ultra-violet facility was placed back on-line and the 30-day department of health services test commenced.  The pile driving behind the existing plant building was planned for the end of the week and if unable, pile driving would begin early next week.  These piles are 90 feet in length and will take approximately three or four weeks to install.  At the conclusion of installing these, the drill rig will return to Riparian View to begin driving the additional sewer piles.

Week of February 20, 2012

This week crews installed the manual bar screen at the new headworks structure and began working on the mechanical bar screen at this same facility.  In addition to that work, walls within the headworks building were being formed.  Southern California Edison (SCE) set the new electrical gear within the electrical building.  The 54-inch sewer pipeline was installed this week.  Pile driving remains dormant until early March when the next section, located behind the existing plant, will be driven.  Pile driving on Riparian View will resume in April.

Week of February 13, 2012

As a part of constructing the new headworks building, this week crews set the new 750 kw generator on its new pad.  Crews also continued installing the new 54-inch north sewer line.  This work is planned to continue through the next two weeks.  The pile driving behind the existing plant is scheduled to begin March 1 and is planned for three weeks.

Week of February 6, 2012

Work continued on the numerous new facilities at the plant.  Crews drove the south sewer indicator piles this week.  The next piles continued to be caste (made).  The updated pile driving schedule has piles being driven behind the plant from 3/1-3/16; followed by a series of piles driven on Riparian View beginning 3/26 through 4/30.  This schedule is predicated on soil conditions and site constraints.

Week of January 30, 2012

The new membrane bioreactor facility's 48-inch main line pipe was set this week.  Crews continued with yard piping and the mechanical bar screen was installed on the new headworks structure.  The bar screen traps and takes anything solid out that doesn’t belong.  It is simply a quick screening process.  Separate crews continued installing the block walls on he new headworks building.  The 30-day testing on the new ultra-violet facility continued this week and is scheduled through the end of the month.  Two days next week, crews will drive indicator piles for the new influent south sewer line, located near Riparian View.  It is currently planned to drive these piles mid-next week.  Casting (molding) of the next round of indicator piles for the area behind the recycling plant is underway.  These piles will be driven in approximately two-three weeks.  At the conclusion of these piles, the rig will relocate to Riparian View pile driving and resume driving piles there, roughly a month from now.

Week of January 23, 2012

Yard piping continued to be installed throughout the plant this week.  Crews also poured the concrete pad for the second generator.  The third and final generator will be installed later this year.  Pile driving remained dormant this week and crews will resume driving piles for the sewer line on Riparian View the week of February 6.

Week of January 16, 2012

This week structural steel frames were installed at the membrane bioreactor facility.  At the headworks structure, crews continued to coat equipment while at the headworks' building, crews poured the second concrete wall and poured the concrete pad for the first of three generators.  At the central electrical building the HVAC (air and heating) was installed.  Pile driving on Riparian View was dormant this week and is scheduled to resume the week of January 30.

Week of January 9, 2012

Crews continued working on the expansion's multiple components.  Work completed this week included pouring walls for the primary sedimentation tank, installing block walls on the headworks building, and completing a water test on the primary effulent pump station.  Pile driving continues.  Next week, crews plan to drive piles on Riparian View for three days, and then the drill rig will move to the back right side of the plant.  Work will continue at this location through late February/early March.  The drill rig will once again return to the Riparian View area in March to drive 53 more piles.  Per the updated schedule the pile drilling is scheduled for completion in March.  Pile driving will then be dormant until summer when the rig will return for the final piles.  Note: The relocation of the drill rig is required so that it is not in conflict with other concurrent construction.

Week of January 2, 2012

Work continued on the all the new facilities being built at the plant.  Pile driving on Riparian View continued and is planned through next week, at this location.  The week of January 16, the rig will again move to another area behind the plant and drive 24 piles there.  It is planned that the rig will return back to Riparian View in mid-February to drive additional sewer line piles.  The current schedule shows pile driving continues through March 2012.

Week of December 26, 2011

Crews continued working on all of the new facilities being built at the existing plant.  Pile driving continued on Riparian View.

Week of December 19, 2011

Crews continued work on the membrane bioreactor (MBR) in preparation of the water testing, planned for early January.  Work is nearing completion on the new headworks structure as crews finish the coating and sealing.  The doors and HVAC (heating/air) are nearly complete on the new central electric building and the electrical crew will begin their work on this facility next week.  While crews completed the pile driving on the sewer line this week, they still continue with pile driving on Riparian View for the new flood wall.  Pile driving will continue on Riparian View through March 2012.  Construction activities will not occur on December 26 or January 2, 2012.

Week of December 12, 2011

Crews continued working on the numerous new on-site facilities including forming concrete walls at the headworks building.  Doors and lights continue to be installed at the central electric building.  Pile driving is nearly complete on the south sewer line in Riparian View.  Flood wall pile driving on Riparian View is scheduled to begin next week and continue for the next few weeks.

Week of December 5, 2011

Crews were installing electrical duct banks at the membrane bioreactor this week.  Additional electrical work continued on the new headworks building.  Next week crews will begin the HVAC installation at the central electrical building.  The drill rig was repositioned on Riparian View and began driving some of the remaining piles on the south sewer line.  This work will continue through the end of this year and into the early part on 2012.

Week of November 28, 2011

This week crews continued installing block at the membrane bioreactor building, while electrical crews installed new switch gear at the headworks building.  At the end of the week, crews planned to begin the 7-day test at the ultraviolet (U/V) building.  The pile driving behind the plant was completed.  Early next week the drill rig will once again be positioned on Riparian View and begin on portions of the south sewer line.  A total of 331 piles still need to be driven on Riparian View.  Work at this location is expected through early 2012.

Week of November 21, 2011

Work continued on all of the fifteen facilities (including pile driving on the flood wall) currently under construction.  As a reminder, no construction activities will occur during the Thanksgiving holiday break (November 24-27).

Week of November 14, 2011

Work continued on the many new facilities being built.  In addition to the on-going work occurring at the new facilities, crews paved the Riparian View entrance.  Pile driving is nearing completion of the piles behind the plant.  Once completed with this section, the rig will be relocated again to complete a portion of the remaining sewer line and flood wall piles in Riparian View.  These piles will hold the facilities (the new sewer lines and the flood wall) in place, insuring that settlement does not occur.  The schedule for 95% of the total number of piles shows completion by the end of 2011/early 2012, weather and site constraints permitting.  Crews need to install other facilities in nearby locations so the remaining 5% piles will be installed after these conflicting facilities are built, roughly summer 2012.

Week of November 7, 2011

Crews continue working on the various facilities, including the installation of new windows and glass for the central electric building.  Pile driving continues on the back of the operations center.  Crews buttoned up the site in preparations for the impending rain this weekend and will not be working on Veteran's Day: Friday, November 11. 

Week of October 31, 2011

Crews continued installing chemical lines to the various facilities.  Rebar was installed and walls formed on the fine screens area of the Membrane Bio-reactor aeration basin.  Pile driving continued on the floodwall surrounding the plant.  Floodwall construction contains several components: excavation, pile driving, reinforced concrete pile footing, masonry, anti-graffitti coating, floodgates, regrading and landscaping.  Unfortunately these activities can not occur sequentially because of working around biological constraints and construction sequencing.  As of early November, piles were driven everywhere needed except for the portion of the floodwall facing the San Diego Creek, south of the existing headworks, and facing the San Joaquin Marsh overflow parking lot.  Out of the 5400 feet of total wall length, approximately 3500 feet of masonry wall has been constructed from the front gate to the existing headworks and around the future biosolids site. 

Week of October 24, 2011

As a part of the on-going facilities' construction, this week crews installed the masonry block wall at the recycled water pumping building.  Pile driving continues on the back side of the operations center.  To date 2,222 of the 2,899 piles have been installed.  Of the remaining piles, there are 374 piles for the floodwall, which will be installed through the end of the this year.

Week of October 17, 2011

Work continued on the new facilities being built at the Michelson Water Recycling Plant.  The pile driving continues on the west side of the plant with the pile driving rig installing, on average, ten piles per day. 

Week of October 3, 2011

Crews painted the new canopy covering the ultra-violet disinfection facility, installed air piping and railing on the membrane bio-reactor aeration basin and pressure tested the process piping at the high rate clarifier.  The two rain days stalled the pile driving on the west and north sides of the plant.  Pile driving in this area is planned through mid-November.

Week of September 26, 2011

Pile driving for portions of the new flood wall continued on the west and north sides of the plant.  Production in this area remains slow due to tight space and limited drill rig access.  Crews continue work on the other new facilities. 

Week of September 19, 2011

Work continued on all of the project's 16 new facilities including the new flood wall.  Pile driving for portions of the new flood wall continued on the west and north sides of the plant.  Production in this area has slowed due to limited access.  This area is very narrow, which limits the drill rig's mobility and reduces the amount of piles stored nearby.   Crews plan to continue driving piles in this area through mid-November.  The remaining piles for the new south sewer line, located on Riparian View, are currently scheduled for installation beginning in late November.

Week of September 12, 2011

Work continued on all of the on-plant site facilities.  Additional walls were poured on four facilities and electrical crews installed conduits at various locations.  Pile driving for the flood wall continued on the area west of the plant and is expected for the next few weeks.  The overall pile driving schedule is planned through early 2012.

Weeks of August 22 through September 5, 2011

Work continued on the in-plant facilities. Testing took place within various facilities. Production piles were installed along Riparian View for the San Diego Creek floodwall. Production piles continued to be installed along the ponds at the north side of the plant. Concrete for the flood wall footing was placed along Riparian View. Pile driving will take place the week of September 12 on the west side of the plant and will continue for the next few weeks. The slope build up on the west side of the flow equilization basins was completed to accommodate the floodwall installations.

Week of August 15, 2011

In addition to work continuing on the various new on-plant facilities, crews began installing the masonary block for the new flood wall.  Crews are working from Riparian View towards the plant entrance.  The pile driving on the main road leading to MWRP (Riparian View) was completed this week.  Pile driving then began along the ponds located behind the plant building.   

Week of August 8, 2011

Crews remain very active on a variety of facilities within the Michelson Recycling Water Plant.  Activities this week included pouring two new sewer manholes; conducted water tests on the new headworks structure; and continued electrical work on the UV disinfection structure.  Pile driving along Riparian View is nearly complete.  The drill rig on Riparian View had some mechanical issues, resulting in three lost production days, so the remaining piles on Riparian View are now expected to be complete by early next week.  As a reminder, when the Riparian View work is complete, the rig will be parked and a separate rig will work on installing piles along some of the ponds, located behind the plant building.  All of the pile driving around the plant is scheduled through 2011.

Week of August 1, 2011

This week crews continued work on the membrane bioreactor building, which included pouring walls and installing wall reinforcements.  Work on the primary sedimentation tanks and headworks' structure continued.  The electrical work at the UV disinfection structure is nearly complete as crews installed electrial gear and conduits.  Electrical crews continue their work at the new high rate clarifier and this work is planned for the next three weeks.  Pile driving on Riparian View is nearing completion, with one additional week needed to complete the installation of the flood wall piles there.  When this work is completed, the rig will shift their pile work to the back of the Operations Center plant.

Week of July 25, 2011

Crews continued to work on one of the new manholes in the plant; work also continued on the membrane bioreactor building, the primary sedimentation tank, and UV disinfection structure.  Work also continued on Riparian View as crews pile drived production piles for the new flood wall construction.  The current schedule shows the pile driving work on Riparian View through next week at which point the crews will move over to the area back of the IRWD Operations Center.  The third Saturday work is not needed this week so no pile driving will occur on July 30.

Week of July 18, 2011

Work this week included the installation of the metal roofing on the new U/V disinfection facility; concrete pourings for walls, stairs, and handrails throughout the site; and working on the new north sewerline.  Pile driving for the new floodwall on Riparian View also continued this week.  The Riparian View pile driving will continue for the next several weeks.  Saturday work (July 23) is again planned for this week.

Week of July 11, 2011

Crews continued work on many of the new on-site facilities including the membrane bioreactor, the primary sedimentation tank, the headworks structure, the central electrical building, and the ultra-violet (U/V) disinfection facility.  Pile driving continued on the new floodwall planned around the plant.  A total of 1715 piles have been installed around the plant to date.  Pile driving on Riparian View for the new floodwall is scheduled through late fall/early winter 2011, pending any unforeseen weather or site impacts.  A total of 1117 piles are needed for the new floodwall and at the beginning of July crews had installed 236 of the 1117 piles.  Saturday work is planned for the next three weeks (July 16, July 23, and July 30).

Week of July 4, 2011

This week crews formed and poured more walls for the membrane bioreactor building.  The electrical crews installed lights in the new ultra-violet disinfection facility.  Work continued on the new high rate clarifier and the new headworks structure.  Piles for the new flood wall surrounding portions of the plant continue to be made and pile driving continues along Riparian View.

Week of June 27, 2011

Crews formed the walls of the new headworks structure.  This facility acts as a first "screening" for waste water entering the recycling plant.  The electrical contractor installed underground conduits as well as circuit breakers for several of the new on-site buildings.  Piles for the new flood wall surrounding the plant continue to be made and pile driving along Riparian View is scheduled to resume next week.

Week of June 20, 2011

Crews formed and poured walls for the new membrane bioreactor building.  Work also continued on the UV disinfection structure.  When complete, both facilities will clean up the waste water so that it is turned into recycled water.  The recycled water is used to irrigate the parks, greenbelts, etc. throughout the service area.

Week of June 13, 2011

Pile driving continued this week.

Week of June 6, 2011

Pile Driving of the flood wall continued this week.  The production piles' installation is planned through 2011. 

The MWRP Phase II Expansion Project will increase the capacity of the plant from approximately 18 mgd to 28 mgd. Expansion includes a new headworks facility, a primary clarifier, electrical building, ultra-violet disinfection facility, membrane bioreactor facility, and modification to the influent trunk sewer line.

Construction began in September 2009 and completion is expected in 2013. 

For safety reasons, tours of the plant are not being conducted during construction.

Michelson Water Recycling Plant Expansion Notice April 2012

Michelson Water Recycling Plant Expansion Notice January 2012

Michelson Water Recycling Plant Expansion Notice October 2011

Michelson Water Recycling Plant Expansion Notice August 2011

Michelson Water Recycling Plant Expansion Notice December 2010

Michelson Plant Construction Map