Project Profile_Point Loma_4-4-19_Draft

PROJECT PROFILE | POINT LOMA, CA Fully Compatible Treatment Train Fits Small Footprint UrbanPond TM & Modular Wetlands®

A Forterra Company

Point Plaza Voltaire Point Loma, California

Photo Credit: Shutterstock.com - Action Sports Photography

Introduction Point Loma Peninsula, California is an iconic land feature that jets out into the Pacific Ocean and completes the northern rim of the San Diego Bay. The peninsula has been described as “where California began” 1 , marking the first landing point for European expeditions to present-day California. This moniker is especially fitting, as Point Loma has now become the landing place for the first ever UrbanPond TM . UrbanPond TM is a highly configurable stormwater storage system that is providing developers and engineers access to superior underground capabilities. Within this historical area, as with many other urban retrofits, every possible square foot is sought after, accounted for, and maximized. Situation Development opportunities or replacement projects in Point Loma are rare due to existing developments and topographical challenges. Site re-developments in this trendy area require that the new construction be even more efficient and more creative with land usage in order to maximize opportunities in this region of steep hillsides and oceanfronts. The extreme challenges of the topography require innovative solutions for architects and engineers.

Point Plaza Voltaire: Architectural Rendering

5796 Armada Drive #250, Carlsbad, CA | 855.566.3938 | stormwater@forterrabp.com | www.biocleanenvironmental.com

A Forterra Company

Challenge Point Plaza Voltaire Apartments located at 3903 Voltaire Street (Voltaire), is a triangular redevelopment site featuring steep grading from the highpoint at the intersection of Voltaire and Las Lomas to the busy Nimitz Boulevard below. The builder’s goal for Voltaire was to replace an existing commercial building and asphalt parking lot with a state-of- the-art multi-story apartment complex, street-side retail space, and underground parking within a tight trilateral site. To accomplish this, thousands of pounds of earth were excavated and creative architectural plans were developed to maximize on the constrictive shape and dimensions of the space. However, the re-design would increase the imperviousness and density within the Voltaire site for a total drainage area of 24,323 square feet. Runoff from the parking area and roof will pick up additional trash, debris, and TSS (total suspended solids), but California regulations require full trash capture while other permits call for bioremediation to promote infiltration. The challenges were adding up for Voltaire, and jeopardizing their ability to reach developer goals. Solution To solve both the storage and treatment needs, Bio Clean Environmental applied a treatment train of proven and compatible systems that address multiple site challenges. The UrbanPond TM system acts as a storage system to collect all of the site’s stormwater runoff. The modules are 5’ inside height to fit snugly beneath the building’s parking structure. The modules are placed on a concrete foundation slab with multiple holes to promote infiltration and recharge the groundwater table below. Storm flows that outpace the underlying soils infiltration rate are conveyed into a Cleanout/Diversion Structure downstream. An orifice within the Diversion Structure regulates flow into the Modular Wetlands® biofiltration system.

5796 Armada Drive #250, Carlsbad, CA | 855.566.3938 | stormwater@forterrabp.com | www.biocleanenvironmental.com

PROJECT PROFILE | POINT LOMA, CA Fully Compatible Treatment Train Fits Small Footprint UrbanPond TM & Modular Wetlands®

UrbanPond TM Picked From Truck

UrbanPond TM Lifted Into Position

UrbanPond TM Lowered Into Placement

UrbanPond TM Modules Lining Up

UrbanPond TM Final Assembly

Solution (Continued) The volume-based Modular Wetland (MWS-L-4-4-V) treats 2,200 cubic feet of stormwater with a 33-hour draindown time. Due to this treatment train of structures’ position below the street level, a pump system elevates the treated stormwater to a curb outlet on Voltaire Street. This proven treatment train gives developers and design engineers a reliable go-to solution that no other company can offer. Each product fits within the site footprint, and without these devices the redevelopment could have hit impossible challenges. Not only did the UrbanPond TM and Modular Wetlands® stormwater filter combination solve site constraints, but the Modular Wetlands® is the only bioremediation device approved for downstream of detention usage.

REFERENCES 1.

Wikipedia, Point Loma History - https://en.wikipedia.org/wiki/Point_Loma,_San_Diego

5796 Armada Drive #250, Carlsbad, CA | 855.566.3938 | stormwater@forterrabp.com | www.biocleanenvironmental.com

PROJECT PROFILE | POINT LOMA, CA Fully Compatible Treatment Train Fits Small Footprint UrbanPond TM & Modular Wetlands®

A Forterra Company

CONTACT INFORMATION Regional Stormwater Consultant for San Diego

Sean Hasan San Diego & Riverside Counties | Phone: (760) 473-1057 | Email: Sean.Hasan@Forterrabp.com

UrbanPond TM

Lighter weight and easier to install.

Can be installed deeper without the need to increase wall thickness or add additional rebar.

Higher void percentages & increased material efficiency for best in class cost per cubic foot storage.

Designed to meet H-20 loading requirements and the square tessellation provides superior strength and load capacity.

Does not require imported rock back-fill in most applications.

A linkUP slab allows elimination of some modules, further decreasing cost and installation time.

With or without plants (open planter or sealed), the system maintains superior performance in any design configuration.

WA TAPE GULD Approval Without Plants

The Modular Wetlands ® System Linear

Piping into the system opens up numerous configuration and design options, like downstream of detention usage or diverting for retrofits. The easily accessible pretreatment chamber traps and isolates trash, sediments, and hydrocarbons. A unique feature, proven to keep maintenance frequencies and costs at industry-leading lows.

Can Accept Existing Pipe Below Surface

Works Months Without Requiring Maintenance

The Side-By-Side Orientation option allows abnormal high flows to bypass from pretreatment directly to the discharge chamber.

Can Accommodate High Flow Internal Bypass

Space-saving design provides low excavation and installation costs, plus there is no dangerous depressed planter or standing water.

Design Flexibility & Safety

Side-by-Side Orientation

5796 Armada Drive #250, Carlsbad, CA | 855.566.3938 | stormwater@forterrabp.com | www.biocleanenvironmental.com

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