Temporary Closure of San Andreas Trail Extended through April 13

  
The San Andreas Trail temporary closure, from Larkspur Drive to San Bruno Avenue, is being extended through Friday afternoon, April 13, for public safety, owing to complications from the pipeline leak.   Cyclists, please use alternate routes during this period. 

We apologize for any inconvenience, and thank you in advance for your patience and understanding. 

The two-mile paved trail bordering the San Andreas Reservoir is the northernmost part of the three-segment Crystal Springs Regional Trail. For more information on the present trail and plans for future additions, please visit:  https://parks.smcgov.org/crystal-springs-regional-trail




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Arborists Finish Tree Cutting above Key Water Pipeline in Junipero Serra County Park

Our arborists have finished clearing the trees from above a major drinking water pipeline that runs through Junipero Serra County Park in San Bruno. The effects should not be particularly noticeable to park users or nearby residents.

The trees had sprouted naturally over the decades along the pipeline corridor, and their removal was in preparation for pending essential repairs to 90-year-old San Andreas Pipeline #2. The work was largely confined to the pipeline corridor, with trees left in place on either side so that most of the cleared area is screened from view. 

Since large trees and their roots can damage a pipeline and prevent our crews from accessing it for future repair or maintenance, we will not be planting replacement trees on the same corridor. Instead, we’ll hydroseed the disturbed areas and, plant native shrubs for additional screening if needed. New replacement trees will be planted elsewhere in the park at the Park Department’s direction after the pipeline work is completed.

The aging 54-inch pipeline serves approximately a million people in northern San Mateo County and the city of San Francisco. 

And Here's How It Used To Be

Here’s what the area looked like in 1928, when the San Andreas Pipeline #2 began operation. The small temple-style building is the pipeline valve house, now located inside the 1972 Harry Tracy Water Treatment Plant just west of Junipero Serra Park.  

Life on the Watershed: March Mushrooms

Thanks to the March rains, wild mushrooms are out on the watershed. Our Habitat Restoration Project manager Mauli Vora sent blogspot pictures of a couple of the species that are there these days. Mushrooms aren't plants, but fruits of fungi underground that sprout in wet weather. And those fungi are vital to forest health and diversity. 

They are robust, wide-ranging underground webs of long thread-like tubes that connect with the fine tips of partner tree rootlets. Different fungi species have ongoing, mutually beneficial interactions with particular partner trees, like the watershed’s native Coastal live oaks. 

The fungi tubes conduct sugars and other compounds from tree to mushroom, while they continually relay minerals and water from  soil to rootlets, invigorating the whole root system and boosting tree nutrition and health.  Fungi can even penetrate and extract water from rocks for a partner tree during a drought, 

Their fruit will be forage for deer, squirrels, banana slugs, insects and other woodland dwellers. Mushrooms continue through the rain months, but the fungal network below sustains partner trees with water and nutrients all year. 

The Habitat Restoration Program is bringing back more Coastal live oak forests, along with native grasses and marshland, througout the watershed. The historic habitats provide essential food and shelter for a multitude of insect, bird, and animal species--some found nowhere else in California 

Ludeman Lane Test Well Drilling to Start March

The Regional Groundwater Storage & Recovery Project (GSR) has drilled an additional 13 groundwater wells throughout northern San Mateo County. We at the SFPUC are looking for up to three additional groundwater well station locations to complete the project.  One potential location is on SFPUC-owned property near Ludeman Lane. To assess whether or not this is a viable site for a groundwater production well, we will drill a test well. Work was originally planned to begin in September 2017 but will now begin in March 2018.  We will test the well for two months to determine whether or not the site is viable.

Approximate location of groundwater test well at Ludeman Lane for the Regional Groundwater Storage and Recovery Phase 2 Project.

What to Expect

• A crew of approximately eight people will operate a drill rig to dig an approximately 550 foot well.
• Expected start of work: Crews will be on-site starting March 12, 2018 and drilling will begin March 19, 2018.
• Anticipated Drilling Duration: one month.
• Testing: two months.
• Construction Work Hours:  Daytime Work: Monday-Friday 7:00 a.m.-7:00 p.m. No weekend or nighttime work is expected at this time.
• The rig and equipment will stay on site for the duration of the work. The construction area will be fenced off for safety. A security guard will monitor the area after work hours when the contractor is not on-site.
• The contractors will make efforts to minimize dust and noise in accordance with Millbrae noise ordinances.
• Green Hills Park users will not be affected during construction.
• Please avoid the equipment for your safety.

Project Background
Do you have a savings account? We know that having savings is an important part of planning for the future and here at the SFPUC we are looking ahead and saving for our water supply. How does it work? GSR consists of storing water and recovering that water for use during dry-years. This will create a savings account of up to 7.2 gallons of groundwater per day.

The GSR project is designed to help diversify our water supply for drought protection and will ensure we are even more resilient during and after an earthquake or other emergency. Read more: http://sfwater.org/gsr