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Puente Hills Assessment, Restoration Opportunities, Whittier, California – LSA Associates and Puente Hills Landfill Native Habitat Preservation Authority

habitat restoration native vegetation Restoration Ecology

Land IQ provided habitat restoration technical expertise for the evaluation of the restoration potential of 3,810 acres of open space, based on existing conditions of exotic species densities, soils, and disturbance factors. Land IQ was responsible for:

  • Developing evaluation criteria for ranking the restoration potential of different management areas and disturbed sites within the open space, based on ecological and practical consideration;
  • Coordinating the field team for mapping and assessing 1,304 acres of weedy, disturbed land for restoration potential based on existing conditions of exotic species densities, soils, and disturbance factors;
  • Coordinating and managing digital data mapped in the field, and data analysis.

Land IQ made specific recommendations to restore unique native habitats, including native grasslands, walnut woodland, oak woodland, chaparral and coastal sage scrub associations.

Land IQ continues to provide monitoring and consulting services to the PHLNHPA for habitat restoration.

Baldwin Hills Scenic Overlook State Park Visitor Center and Habitat Restoration

native habitat restoration Restoration Ecology

Land IQ staff was responsible for designing a plant species list and native habitat restoration for the park’s visitor center and public trails in the Baldwin Hills. The site was highly disturbed with annual grasses, wild radish, castor bean, and pampas grass that presented a challenge to habitat restoration. The project included coordination with the team responsible for interpretive exhibits on the natural history of the park. The park and visitor center opened in 2009.

Big Canyon Golf Course Wetland Restoration

wetlands restoration habitat monitoring Restoration Ecology

The Big Canyon Golf Course wetland restoration involves the creation and enhancement of riparian and emergent/herbaceous wetland habitat onsite at the golf course as mitigation for facility enhancements and property renovations that affected federal and state jurisdictional waters and wetlands. Land IQ worked with the hydrologists and engineers at WRC Consultant Services, Inc. to develop the final restoration and monitoring plan. The plan included creating and revegetating a new steam channel along a historic blue-line stream, as well as enhancing riparian and emergent vegetation along two existing golf course lakes. Land IQ is responsible for:

  • Verifying plant layout, and monitoring plant installation and seeding;
  • Horticultural maintenance monitoring;
  • Quarterly monitoring of plant establishment during the first year after installation;
  • Preparation of quarterly and annual monitoring reports.

The stream creation area achieved nearly 75 percent cover in its first year, just under the third-year performance criteria. The lake enhancement areas exceeded the fourth and fifth year performance criteria of 85 and 90 percent cover, respectively. Exotic vegetation had less than 10 percent cover at the end of the first year. Maintenance at the site continues. At this time, the project is in compliance of all permit mitigation requirements.

Bonita Creek Restoration Management and Monitoring – San Joaquin Hills Transportation Corridor Agencies

restoration urban watershed flood control Restoration Ecology

The ecological restoration of lower Bonita Creek and the adjacent upland slopes in the City of Newport Beach presented several challenges unique to urban settings. In the conceptual design, the reconstructed creek had a low-flow channel and an underground box culvert to divert high flows exceeding those of a 10-year storm event, for flood control.

Land IQ staff collaborated with project engineers on a watershed analysis and a series of hydrologic models and site evaluations to develop ecological solutions for the final restoration plan. The high flow box culvert was deleted and natural flows were retained throughout the restored creek. A series of buried grade control structures were engineered for flood control. The layout of plant species in each specified habitat was determined based on the results of the watershed analysis, surface flow models, groundwater analysis, and the micro-topography of the site after finish grading. Adjacent upland slopes were restored to coastal sage scrub habitat. Land IQ oversaw the restoration implementation and monitored the hydrologic, biogeochemical, and biologic conditions of the site. After six years, the site was a functioning riparian habitat with adjacent upland buffer.

This habitat restoration was part of the mitigation for impacts from construction of the San Joaquin Hills Toll Road (SR 73). The site is now part of the bike and trail system for Orange County. Land IQ gives tours of the site annually to educate the public on local ecological restoration.

Land IQ recently helped develop the Bonita Creek Interactive Classroom website for the TCA with support from the Metropolitan Water District/Orange County Municipal Water District Community Partnering Program (CPP) Sponsorship Award. The website includes a virtual tour of Bonita Creek and provides science curricula to teach in the class or at the site.

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