Wednesday, December 17, 2014
YOLO COUNTY NEWS
99 CENTS

City moves forward with plan for better wastewater treatment

By
From page A1 | June 27, 2014 |

It could be the single most expensive capital improvement the city has embarked on alone.

Yet it’s been in the pipeline for 38 months, popping up in the public eye on a regular basis and so far it’s under budget.

Those things may explain why it only took the City Council 15 minutes to direct city staff to execute a design-build agreement to start construction of a major wastewater treatment facility upgrade that will allow the city to comply with state law in the future.

Incoming wastewater requirements from regulators have in some ways forced the city’s hand in planning for changes to the city’s current wastewater facility. Something must be done to avoid expensive fines, and many months ago city officials began moving toward upgrading the wastewater treatment plant.

Originally slated to cost $95 million, city staff have worked to lower the cost of the project to $89.5 million, a 6 percent savings. Design-build projects often realize various savings because the same company that designs the project builds it.

“We set up the plan and we stuck to the plan,” Michael Lindquist, project manager, said.

The public helped the city choose a plan that will use expensive technology to meet wastewater treatment standards, but not to the degree of outputting recycled water clean enough to deliver to the drinking water treatment plant, as in some California communities.

Lindquist said besides the “ick factor” of using recycled water in drinking systems, the project called for in city plans was chosen in part for its relative frugality and for its ability to one day use recycled wastewater for irrigation.

The current wastewater treatment facility is 42 years old, Lindquist said. Parts of it need rehabilitation, and where treated effluent was delivered to holding ponds, a new commonly called tertiary treatment facility will take over and advance the treatment of the wastewater to, at one point, meet strict state standards for irrigation.

“Right now they put (recycled water) underground,” Lindquist said. “Our plant will be for reuse, but it won’t be potable, it could be for irrigation.”

Some tertiary treatment are so high-tech, they use both ultraviolet disinfection processes and reverse osmosis to produce pure water. Pure water sounds good, but it’s actually toxic to humans, Lindquist said, because it leaches minerals out of the body. Some communities in water-scarce places use recycled pure water in drinking water treatment plants to absorb minerals before being sent into potable water mains.

It’s unknown if pure recycled water could, years and years down the road, be a requirement for California communities. What is known is that the state will only become more strict in its wastewater requirements if a 40-year trend continues, Lindquist said.

“We do expect things to get more stringent,” he said. “(But) we participate in technical groups.”

Those groups allow communities to see changes coming years down the road and make preparations.

Lindquist said the eventual groundbreaking for the project could be planned soon.

— Reach Dave Ryan at dryan@davisenterprise.net or call 530-747-8057. Follow him on Twitter at @davewritesnews

Comments

comments

  • Recent Posts

  • Enter your email address to subscribe to this newspaper and receive notifications of new articles by email.

  • .

    News

    Supervisors remove Saylor from First 5 Yolo Commission

    By Anne Ternus-Bellamy | From Page: A1

     
    GPAS and test scores up for UCD’s newest undergrads

    By Julia Ann Easley | From Page: A1

     
    Million Cat Challenge aims to rescue shelter felines

    By Pat Bailey | From Page: A1 | Gallery

    Everest visit fulfills judge’s lifelong dream

    By Lauren Keene | From Page: A1 | Gallery

     
    U.S., Cuba seek to normalize relations

    By The Associated Press | From Page: A2

    Water officials fret over rain’s effects

    By The Associated Press | From Page: A2 | Gallery

     
    Bob Dunning: Not enough hours in the month

    By Bob Dunning | From Page: A2

    Fatal Capay crash leads to driver’s arrest

    By Lauren Keene | From Page: A2

     
    Yolo Crisis Nursery in full swing

    By Special to The Enterprise | From Page: A3

     
    Creative women share food, friendship

    By Enterprise staff | From Page: A3

    Pedal around Davis on weekly bike ride

    By Enterprise staff | From Page: A3

     
    Donate to STEAC at Original Steve’s

    By Enterprise staff | From Page: A3

    Beer and film tour boosts bike group’s coffers

    By Enterprise staff | From Page: A3

     
    Overeaters get support at meetings

    By Enterprise staff | From Page: A4

     
    Fibro Friends will update their journals

    By Enterprise staff | From Page: A4

    Input sought on county’s facility needs

    By Special to The Enterprise | From Page: A4

     
    Traditional carols service is Saturday at St. Martin’s

    By Enterprise staff | From Page: A4

    Have coffee with the mayor on Friday

    By Enterprise staff | From Page: A4

     
    Stockings brighten holidays for special kids

    By Enterprise staff | From Page: A4 | Gallery

    Evening tai chi classes start Jan. 6

    By Enterprise staff | From Page: A4

     
    Name Droppers: Law prof earns peace prize for nonfiction

    By Enterprise staff | From Page: A5 | Gallery

    Community menorah lighting set Wednesday

    By Enterprise staff | From Page: A5

     
    Latest immunization data shows little improvement locally

    By Anne Ternus-Bellamy | From Page: A5

    School board will vote on repairs, new portables

    By Jeff Hudson | From Page: A6

     
    Study: National monument could boost local economy

    By Special to The Enterprise | From Page: A6

    Round up at the registers for Patwin

    By Enterprise staff | From Page: A7

     
    Parent/toddler art and music program offered

    By Enterprise staff | From Page: A7

    Libraries will be closed around the holidays

    By Enterprise staff | From Page: A7

     
    Cloudy — yet safe — tap water adds to negative health effects

    By Special to The Enterprise | From Page: A7

    Come Worship with Us

    By Special to The Enterprise | From Page: A10

     
    .

    Forum

    This ought to teach her love

    By Creators Syndicate | From Page: B5

     
    Language failed me that night, but not now

    By New York Times News Service | From Page: A8

    Steve Sack cartoon

    By Debbie Davis | From Page: A8

     
    Grand jury function clarified

    By Letters to the Editor | From Page: A8

    Defying Western academic norms

    By Letters to the Editor | From Page: A8

     
    Boycotters are our future profs

    By Letters to the Editor | From Page: A8

    Many thanks to The Avid Reader

    By Letters to the Editor | From Page: A8

     
    .

    Sports

     
    UCD reveals a challenging softball schedule

    By Enterprise staff | From Page: B1 | Gallery

    Tumey talks about state of Aggie athletics, where they’re headed

    By Bruce Gallaudet | From Page: B1 | Gallery

     
    Davis gets Rio Linda as Curry Invitational starts Thursday

    By Bruce Gallaudet | From Page: B1 | Gallery

    Westbrook, Durant lead Thunder past Kings

    By The Associated Press | From Page: B8 | Gallery

     
    Sports briefs: Former Aggie Descalso inks deal with Colorado

    By Staff and wire reports | From Page: B8

    .

    Features

    Some vegetables just can’t be beet

    By Julie Cross | From Page: A9 | Gallery

     
    .

    Arts

    .

    Business

    .

    Obituaries

    Rena Sylvia Smilkstein

    By Special to The Enterprise | From Page: A4

     
    .

    Comics

    Comics: Wednesday, December 17, 2014

    By Creator | From Page: B6