Category Archives: Site Assessment and Remediation

Understanding PFAS: How they’re Regulated and what that Means for your Projects

What are PFAS? Produced by industrial/commercial facilities and present in consumer goods, PFAS (per- and polyfluoroalkyl substances) is a group of synthetic chemicals used in products that resist oil and water, control temperature, and prevent degradation of materials. Examples include non-stick cookware, pizza boxes and other paper-based food containers, stain-resistant fabrics and carpets, fire-resistant clothing

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Managing Schools’ Hazardous Materials Risk

The $12,000 fine and administrative penalties levied in January against a Los Angeles County school district highlights a common problem—mishandling of chemical storage and disposal can lead to dangerous and costly consequences for schools. Improper Chemical Management Consequences Chemicals used in scientific laboratories; shop classes; art and photography classes; pool and healthcare facilities; and maintenance

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Risk Assessment for Farmland to Wetlands Conversions

Ecology and ecohydrology issues play key roles in assessing legacy pesticides and residual nutrient effects on mitigation projects converting former farmland to wetlands. The San Diego County Water Authority (SDCWA) has received environmental permits to reclaim 40-acres of former farmland in Tijuana River Valley to establish native wetlands habitat as mitigation for capital improvement projects

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Soil Remediation for Agricultural Land Development

Soil remediation for developing California’s agricultural fields often requires a Removal Action Workplan (RAW) setting target concentrations so each chemical contaminant is reduced to an acceptable level for human health. A multi-family residential development proposed on a former 15-acre Placer County orchard illustrates how an environmental impact report (EIR) can effectively address both the proposed

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