• San Diego County Water AuthorityPipelines 3 and 4 Relining Projects Acoustical Studies

    HELIX is providing acoustical studies in support of the San Diego County Water Authority's installation of steel liners in existing concrete pipe with two segments of Pipelines 3 and 4 that extend from Miramar Hill to Lake Murray in the City of San Diego. The project is needed in order to repair deteriorating pipelines and ensure delivery of imported water via the Second San Diego...

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  • Ecology Auto Parts

    HELIX provided comprehensive air quality permitting and compliance services for the Ecology Auto Parts operations located in Chula Vista, California. Operations at this recycling facility include sorting, shredding, and processing of metal that is derived from retired automobiles, structural steel from demolition sites, appliances and other obsolete steel/metals. HELIX assisted Ecology...

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  • Ocotillo Wind Energy Project

    HELIX is providing biological consulting services to Pattern Energy Group for their 265-megawatt Ocotillo wind energy project in Imperial County. The project includes 112 wind turbines on approximately 12,500 acres of lands administered by the BLM. HELIX worked closely with local BLM staff and the BLM district office to develop biology survey protocols for the site that met state and federal...

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  • Harmony Grove Village

    HELIX managed the preparation of this fast-track EIR project in the Harmony Grove area of the County of San Diego. HELIX also prepared the agricultural, biological and visual technical reports for the project. This mixed-use includes 742 planned residential/work-live units, recreational spaces, equestrian facilities, and a possible water reclamation facility on 468 acres. The project ...

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  • State Route 11

    HELIX prepared a Phase 1 Program EIR/EIS and supporting technical studies evaluating general alignment locations for the planned State Route (SR)- 11 in south San Diego County near the U.S.-Mexico border and a future international Port of Entry (POE) to Mexico . This facility would connect on the west at the planned SR-905/SR-125 interchange, and extend eastward approximately two miles to the...

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  • Carlsbad Raceway

    HELIX biologists and construction personnel worked with a commercial developer to restore approximately 20 acres of native habitats on the site of the historic Carlsbad Raceway. The project involved restoration of both upland and wetland habitats to create a contiguous open space preserve. Specific activities included biological monitoring, planting, seeding and maintenance of the restoration...

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  • Inland Feeder

    HELIX biologists and construction personnel worked with Psomas and Metropolitan Water District to successfully restore nearly 100 acres of alluvial fan sage scrub along the Inland Feeder Pipeline, a water pipeline and tunnel water conveyance facility. The project required special attention to San Bernardino Kangaroo Rat and San Jacinto Valley Crown Scale habitat requirements. Year-round...

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  • SDG&E Sunrise Powerlink Transmission Project #1239

    The Sunrise Powerlink project is an approximately 117-mile long project that includes a 500 kV transmission line from the Imperial Valley Substation to a new substation southeast of Alpine, and a 230 kV transmission line with both overhead and underground components to the Sycamore Canyon Substation in San Diego County. HELIX provided GIS analyses, and conducted baseline biology,...

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  • I-215 / Van Buren Boulevard Interchange

    HELIX Landscape Architects prepared the initial Visual Impact Assessment (VIA) technical study; Landscape Concept Plan; and Final Design Plans, Specifications and Estimates (PS&E) for the interchange replacement project at Interstate 215 and Van Buren Boulevard in Riverside County. The Landscape Concept Plan utilized a design theme derived from the nearby March Air Field and Museum....

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  • Memorial ParkSoccer Arena

    HELIX Landscape Architects developed the initial concept plan and then prepared final construction documents for an outdoor soccer arena and new tot-lot at the W.J. Oaks Boys & Girls Club facility in the Logan Heights neighborhood of San Diego. The project, located within Memorial Park, made use of an under-used, overgrown portion of the site. The soccer arena was funded by a California...

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  • San Vicente Pipeline

    HELIX is carrying out the environmental compliance monitoring for the San Diego County Water Authority San Vicente Pipeline project. The project is a component of the Water Authority's much larger Emergency Storage Project (ESP), a system of reservoirs, pipelines and other facilities that work together to store and move water around the County in the event a natural disaster interrupts the Water...

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  • Barnett RanchOpen Space Management Plan

    HELIX prepared an Open Space Management Plan for the 760-acre Barnett Ranch property located in the County of San Diego in Ramona. The Open Space Preserve within Barnett Ranch is both within and adjacent to the Pre-approved Mitigation Area in the County Multiple Species Conservation Program's San Vicente corridor. The HELIX team performed vegetation mapping, general biological surveys, rare...

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  • Tecolote CanyonNatural Resource Management Plan

    HELIX prepared a Natural Resource Management Plan for the approximately 900-acre natural park in the Linda Vista and Clairemont Mesa communities of the City of San Diego. Although it is virtually surrounded by urban development, the park contributes to the City's MSCP preserve system and supports a number of sensitive plant and animal species. Work in support of the management plan included...

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  • Hemet/San JacintoIntegrated Recharge and Recovery Program

    HELIX has provided a wide range of environmental compliance services to EMWD for the Hemet/San Jacinto Integrated Recharge and Recovery Program (IRRP), including environmental permitting, NEPA compliance, CEQA compliance, and construction monitoring. The proposed project is ultimately planned to include 100 acres of groundwater recharge basins in the San Jacinto River, a 7.7-mile water supply...

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