Wednesday, June 15, 2016

Caltrans construction, part of San Pedro Creek Bridge project, Friday June 17 until early August

Nextdoor/General 6/14/16, "Caltrans Construction Update on San Pedro Creek Bridge." (Government Services from the City of Pacifica.

Image result for water detention bio-swales picture
Bioswale is ultimately water drainage
"Caltrans will begin constructing 3 water detention bio-swales at various locations in the south end of Pacifica as part of the San Pedro Creek Bridge construction project, with work beginning June 17 and extending into early August 2016. Work will include earthwork, minor paving, sidewalk re-construction, and re-vegetation work at San Pedro Terrace Road and Linda Mar Boulevard. 

Other locations impacted include San Pedro Terrace Road west of Peralta Road, Linda Mar Boulevard near the fire station (westbound) and Linda Mar Boulevard near the Adobe Sanchez Arts Center (eastbound). Residents may notice increased noise in the construction zone while the contractor is working."

Reference, government.  See the link to the notice from Caltrans for details:   You can go to the project website to be added to the group e-mail list or get more information on the project at:

Reference, definition.  Wikipedia.  Bioswales are landscape elements designed to remove silt and pollution from surface runoff water. They consist of a swaled drainage course with gently sloped sides (less than six percent) and filled with vegetation, compost and/or riprap.[1]:19 The water's flow path, along with the wide and shallow ditch, is designed to maximize the time water spends in the swale, which aids the trapping of pollutants and silt. Depending upon the geometry of land available, a bioswale may have a meandering or almost straight channel alignment. Biological factors also contribute to the breakdown of certain pollutants.[2]  A common application is around parking lots, where substantial automotive pollution is collected by the paving and then flushed by rain. The bioswale, or other type of biofilter, wraps around the parking lot and treats the runoff before releasing it to the watershed or storm sewer. 

Note photograph image from Flora Terra Landscape Management, "Commercial Property Landscaping Mitigates Storm Water." 

Posted by Kathy Meeh

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