Orange Memorial Park Undergoing Major Renovation

Orange Memorial Park is getting a makeover starting with what lies underneath. Starting March 22, 2021, residents will see construction fencing lining a portion of the park to get ready for Phase One of the Orange Memorial Improvement Project, consisting of a Regional Stormwater Capture Project that will provide water quality improvements to meet the requirements of the San Francisco Bay Municipal Regional Stormwater Permit (MRP). The project is designed to reduce discharges of PCBs (Polychlorinated Biphenyls), which have been linked to a variety of adverse health effects, and mercury to the San Francisco Bay.

“This regional project, which is spearheaded by our City, will provide multiple benefits in addition to improving water quality, including reducing localized flooding and reusing treated water for irrigation and groundwater recharge,” said South San Francisco Mayor Mark Addiego. “We’re excited that we are leading this effort as the first of its kind in the Bay Area, in hopes that this encourages others to do similar projects that will ultimately benefit our health and the environment.”

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(image: incommon)

How it Works

Once water is diverted into the park, the system treats the water to remove trash, debris, and sediment. Pretreated water will then enter a pipe leading to an underground cistern located under the sports field for further treatment and disinfection so it can be used to meet irrigation and other non-potable demands, which includes irrigation to the park and along portions of Centennial Trail. When full, the cistern overflows into an infiltration gallery which will provide groundwater recharge benefits. Construction of a stormwater capture system will occur underneath a portion of the existing baseball and softball fields, and along the picnic area.

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(image: incommon)

This project helps clean water flowing from our cities to the Bay. The reach of Colma Creek running through Orange Memorial Park drains over 6,500 acres of land from six different municipalities, including the City of South San Francisco. This regional stormwater capture project, the first of its kind in Northern California, diverts all dry-weather flow and the first flush of urban stormwater runoff from Colma Creek into an underground system integrated within the park. Overall, 200 million gallons of water, or 15 percent of the annual flow in Colma Creek, pass through the system for treatment and beneficial use.

The Phase One project is funded through a $15.5M cooperation implementation agreement with Caltrans to help satisfy its pollutant load reduction.

What About the Sports Fields?

Revitalizing the sports fields is Phase Two of the Orange Memorial Improvement Project, which will also include pavement restoration and other associated surface improvements. This multi-sport, all-weather field will include:

• Electronic scoreboards

• Synthetic turf

• Sports field lighting

• Enhanced planting areas

• Spectator areas

• One adult/teen softball diamond with dugouts, bullpens, and batting cage

• Two youth baseball diamonds with dugouts and bullpens

• Two adult soccer fields with portable goals

• Two junior soccer fields with portable goals

• Four youth soccer fields with portable goals

• Drinking fountains

“Determining what this multi-sport, all-weather field will look like was the result of many community meetings, where we heard from a variety of sports representatives in terms of how they envision the future of this field,” said Sharon Ranals, Parks and Recreation Director and Assistant City Manager.

“Having played on these fields in my youth, I know firsthand how valuable youth baseball is to our community. These field improvements and expansion will provide years of recreation and memories for generations to come,” added Vice Mayor Mark Nagales.

Schedule

Phase One construction begins March 22, 2021, continuing through Spring 2022.

Phase Two construction will begin in Spring 2022 with sports fields anticipated to reopen in Spring 2023.

Follow the progress of this project by visiting www.ssf.net/OMPImprovements and read more about Lotus’ role on the project here!

Lotus Wins Overpass Challenge Award!

Lotus is excited to be one of three winning teams selected for the 2020 Greater Milwaukee Green Infrastructure Overpass Challenge! The contest, funded by the Tellier Foundation and administered by the Milwaukee Metropolitan Sewerage District (MMSD), is focused on reducing and treating polluted stormwater runoff, the biggest remaining threat to rivers and lakes across the US. Teams were challenged to identify new, innovative approaches to maximize the capture and treatment of runoff from interstate overpasses, while attaining other triple bottom line benefits such as activating otherwise neglected spaces.

Many cities are transforming transit underpasses—such as I-94 in Milwaukee—into public parks, replacing vacant lots, overgrown weeds, and dark passageways with art installations, pedestrian thoroughfares, and community amenities. (image: Google Earth)

Gathering Place by the Water

Water is of vital importance to Milwaukee, which sits at the confluence of 3 rivers and Lake Michigan. The city’s name fittingly means “gathering place by the water”, derived in part from Potawatomi (“manwaking”) and Ojibwe (“omaniwakiing”). Drawing inspiration from this rich heritage and identity, Lotus teamed with incommon to develop two prototype concepts that, in addition to achieving stormwater management objectives, would improve safety, enhance connectivity, and create gathering spaces for the community. Both designs would reconfigure the existing drainage pipe system from the freeway, connecting it to a new treatment system below, consisting of water treatment elements with the flexibility to be implemented individually or as a hybrid combination based on specific site conditions and needs.

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Sculpture Park

The Sculpture Park concept manages water with a distributive approach, using modular components that are flexible in their implementation. The existing freeway drainage system would be routed down to a baffle box element that settles out sediment and other contaminants. Baffle boxes would be housed in sculptures designed in collaboration with local artists, inviting visitors to explore and interact with the park features, while also providing educational information about local flora and fauna.

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Waterways Parklet

The Waterways Parklet concept is a more centralized treatment system well-suited for space-constrained sites, with vegetated wattle waterways that spiral down and around overpass columns, providing initial filtration as runoff is captured and conveyed below. The Waterways Parklet would provide air quality benefits, while introducing vertical wildlife habitat and vegetation to the site.

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renderings by incommon

Both designs finish the water treatment process with a constructed wetland and bioretention elements that provide wildlife habitat, public interaction touch points, and community greening.

Tune in Wednesday, February 24, 2021 at 10a PST to learn more about the Green Infrastructure Overpass winning designs.

San Mateo County Streets Reimagined

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When is a street not just a street?

What if the streets in our communities were better designed to provide safety and protection for pedestrians and cyclists, help increase resilience against the effects of climate change, and beautify our neighborhoods?

BEFORE

AFTER

To take the leap toward sustainable streets throughout the county, the City/County Association of Governments of San Mateo County (C/CAG) created the San Mateo Countywide Sustainable Streets Master Plan in collaboration with Caltrans under the Climate Adaptation Planning Grant Program. This long-term planning effort builds on years of watershed modeling and stakeholder input, and takes a closer look at how and where to build sustainable streets in San Mateo County that integrate stormwater management with local priorities, like bike and pedestrian mobility, transit improvements, climate change adaptation, and more. The plan also includes a down-scaled climate change analysis to better understand the potential future precipitation related impacts from climate change and how green stormwater infrastructure can help adapt to changing conditions.

nexus with countywide + local intiatives

technical suitability and co-benefits criteria matrix used to inform project prioritization

Green Infrastructure Tracking Tool

image credit: Paradigm Environmental

snapshot of project benefits for improving water quality and promoting climate resiliency

image credit: Paradigm Environmental

Lotus—along with key project partners Alta Planning, Paradigm Environmental, and Urban Rain Design—worked with C/CAG to identify and prioritize sustainable street projects throughout the County, developing a scoring methodology to prioritize projects and a companion Green Infrastructure Tracking Tool website that summarizes sustainable infrastructure in San Mateo County and the benefits it provides for stormwater capture and climate resiliency.

Page through the complete plan and its associated documents here.

Green Schoolyards From Award-Winning Grant Program

Earlier this year, the San Francisco Public Utilities Commission (SFPUC) celebrated the one-year anniversary since the launch of its Green Infrastructure (GI) Grant Program, the City’s first large-scale GI grant program that provides funding to San Francisco property owners to capture and manage stormwater through GI. The first year of the GI Grant program saw many milestones, including an applicant workshop with over 100 participants, 6 project grants totaling $5M in funding, and winning a 2020 Outstanding Sustainable Stormwater Program Award from the California Stormwater Quality Association (CASQA).

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Today, we celebrate another exciting milestone - the first two grant projects have completed construction, just in time for the rainy season!

in-ground bioretention basin

image credit: SFPUC

in-ground bioretention basin + mural

image credit: SFPUC

Bessie Carmichael Middle School

The SFPUC awarded San Francisco Unified School District (SFUSD) $0.4M, working with SFUSD’s Green Schoolyards program and additional funding, to transform the Bessie Carmichael schoolyard. The GI Grant Program funded:

• Site soil remediation

• A repaved and painted play yard

• A mural to promote education around the environment and infrastructure through art

• Three in-ground planted bioretention basins, and

• Four above grade planters to manage roof and yard stormwater runoff.

Altogether these seven stormwater management BMPs will manage 275,000 gallons of stormwater annually within the Channel Watershed.

Lafayette Elementary School

An additional $0.5M was awarded to fund stormwater infrastructure improvements at Lafayette Elementary School, integrated into SFUSD’s building modernization project. The grant funded:

• Two bioretention basins

• A large planted dry creek bed to manage stormwater runoff from the play yard and a portion of the roof

• New planters

• Impervious surface removal, and

• Educational signage throughout the yard.

The stormwater improvements will manage 350,000 gallons of stormwater annually in the Sunset Watershed.

Lotus Water continues to provide technical and programmatic support for the GI Grant Program, working closely with the SFPUC to develop the program guidebook, perform site visits at potential grant project sites, review applications and plan submissions, and provide construction administration services.  

new schoolyard with dry creek bed

image credit: SFPUC

dry creek bed

image credit: SFPUC

Read more about the GI Grant Program here.

Another GI Plan in the Books!

As part of its obligations to regulate stormwater runoff pollutants under NPDES MS4 Phase I requirements, the City of Menlo Park has adopted a Green Infrastructure Plan for Stormwater (GI Plan) that demonstrates a shift from traditional “gray” infrastructure, which channels untreated runoff directly into San Francisco Bay, to a more resilient and sustainable stormwater system that integrates “green” infrastructure strategies. Along with its teaming partners, Lotus helped establish how source control, redevelopment requirements (C.3), green streets, regional capture projects, LID retrofits, and additional City policies can collectively combine to meet runoff capture targets cost-effectively. Dive into the complete document here.

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SJ Green Stormwater Infrastructure Goes Public

The City of San José has published a Green Stormwater Infrastructure (GSI) Plan that lays out the approach, strategies, targets, and tasks needed to transition traditional “gray” infrastructure to include GSI over the long term. Lotus Water was integral in developing the plan, which serves as an implementation guide for institutionalizing the concepts of GSI into standard municipal engineering, construction, and maintenance practices. As California’s weather becomes increasingly unpredictable and extreme, GSI strategies can provide the City with enhanced climate resiliency, local water supplies, and energy savings, consistent with the City’s sustainability goals. The GSI Plan is available here for public review and comment until May 15 - take a peek and share your thoughts!

New GI Grant Program is a HIT!

The SFPUC GI Grant Program has launched!  Lotus helped developed the program and will be providing ongoing technical support during implementation.  The first public workshop about the program sold out with over 100 attendees, and the first applicant has already submitted!  The SFPUC aims to award $6M in GI grants during the first two years of the program, with up to $2M max per project. Learn more about the program and how a grant could benefit you!

What the SWRP?

Lotus recently helped complete the Stormwater Resources Plan (SWRP) for Santa Clara County.  The Plan identifies and prioritizes green stormwater infrastructure throughout the County.  As part of the project, Lotus developed concept designs of several promising opportunities. The project website is here and the SWRP report can be downloaded here.

SF Chronicle Features Civic Center Public Realm Plan

conceptual rendering (image credit: CMG)

Lotus has been working on developing sustainable water systems for the Civic Center District area since 2014. More recently, we were on CMG’s team to assist them with developing a comprehensive plan for the public realm area of the Civic Center Plaza, Fulton Street, UN Plaza, garage/Brooks Hall, and adjacent streets. Our piece of this plan included over 100 iterations of complex water balance analyses!

Read more about the this ongoing plan in the San Francisco Chronicle.

Award for Holloway Green Street

The EPA recently awarded the Holloway Avenue Green Street Project with an Honorable Mention as part of its 2018 Performance and Innovation in the State Revolving Fund Creating Environmental Success (PISCES) program. The project (also referred to as the Lake Merced Green Infrastructure project) is located within the Ingleside Neighborhood and is one of eight SFPUC Early Implementation Projects that have been constructed or are currently being constructed as part of Sewer System Improvement Program. Completed in 2017, the project converts a nine-block stretch of an urban residential street and important bike route into a high-performing green street that also provides pedestrian and bike safety improvements. Parking lanes were reconstructed with pervious concrete pavement to manage roadway runoff and bioretention was incorporated into new corner bulbouts and sidewalk planters to manage sidewalk runoff while also adding greenery along the corridor. The new green infrastructure measures will remove approximately 1 million gallons of stormwater each year from the City’s combined sewer system.

Lotus Water led the planning, stormwater modeling and preliminary design of this project. Additionally, we are providing post-construction performance monitoring and analysis and performing maintenance inspections.

Read more about the PISCES award here!

Green Infrastructure Scores at WEFTEC

image credit: Mullenix

image credit: WEF

WEFTEC (Water Environment Federation's Technical Exhibition and Conference) is recognized as the largest conference of its kind in North America and offers water quality professionals from around the world with innovative water quality education and training. With the host city’s bustling French Quarter as a backdrop, Lotus’ Robert Dusenbury, along with the former King County Combined Sewer Overflow (CSO) Program Manager John Phillips, were selected to present on a new Green Infrastructure (GI) Project Scorecard developed collaboratively by Lotus Water, Herrera, and EcoNorthwest. The scorecard evaluates GI projects to determine when investment in GI is an appropriate part of the solution within a particular CSO basin. Over 100 project characteristics can be entered and evaluated to first determine the cost-benefit ratio of a GI project alternative compared against the baseline grey alternative within each basin, then both quantitative and qualitative additional benefits are stacked on top of that baseline comparison to determine when a GI concept should be carried forward for further development and evaluation. The framework of the tool is flexible and can be adapted to the priorities and values of other areas to comprehensively evaluate sustainable infrastructure in areas with complex environmental, cultural, and resiliency priorities like New Orleans.