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Group Delta provides a broad range of services to meet the needs of our clients. Our registered and licensed professionals are cognizant of the time-sensitive nature of site investigations and understand the desire of a client to limit liabilities while reducing environmental expenditures. We understand expediting project delivery and maintaining budgets are primary objectives for any project. Key to satisfying these projects is having a team of qualified staff with relevant experience that can provide services promptly. In addition, close coordination with team members, responsiveness, timely delivery of quality work products, and excellent project management are important in keeping projects completed on time and budget. We offer our expertise in the following environmental services:

Due Diligence
  • Phase I ESA (AAI & ASTM)
  • Caltrans HMDD & ISAs
  • Corridor Studies
Site Assessment
  • Sampling and Analysis of Soil and Groundwater
  • Groundwater Monitoring Well Installation and Sampling Programs
  • PFAS assessment and remediation
  • Aerially Deposited Lead (ADL)
  • Soil Gas Surveys
  • Human Health and Ecological Risk Assessments
  • Feasibility Study (RI/FS), Remedial Action Plans (RAP), Removal Action Workplans (RAWs), Site Closure Reports
  • Remediation System Engineering Design and Operation
  • Smart Remediation, ASTM Greener Cleanup Standard, & Calculation of Sustainability Metrics
  • Review/Optimization of Existing Remediation Systems
  • Contaminated Soil Removal/Remediation
Construction Environmental Compliance
  • Mitigation Monitoring
  • Stormwater/BMPs
  • Permitting/Permit Compliance
  • Change Order Support
  • Contaminated Soil/Hazardous Materials Management
  • Health and Safety Plans
  • Preparation of Project Specifications
  • Construction Dewatering
Water Quality
  • Construction Stormwater Quality Management
  • Industrial Stormwater Best Management Practice (BMP) Compliance
  • Municipal NPDES Stormwater Permits
  • Water Quality Monitoring
Air Quality
  • Air Quality Impacts
  • Health Risk Assessments
  • Atmospheric Dispersion Modeling and Forecasting
  • Construction Assessment
  • Emission Inventories and Mobile Source Studies
  • Strategic Technical Support
  • Exceptional Event Demonstrations
  • Litigation Support – Compliance and Regulatory Support
  • Measurement and Assessment for Strategic Planning
  • PFAS in Air
Hazardous Materials/Industrial Hygiene
  • Asbestos
  • Lead Based Paint
  • Indoor Air Quality
  • Health and Safety Plans
  • Airborne Dust, Lead, VOC Monitoring
  • Hazardous Waste Management
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