EEC and Esri Establish Business Partnership

EEC and Esri recently established a business partnership to help EEC better serve its clients and provide Esri with access to a team of experts in wastewater engineering and environmental investigation and remediation. EEC will be utilizing this partnership and the resulting increased resources to better support a large number of clients who already rely on EEC’s technology consulting services for implementation, configuration, customization, and integration of their Esri-based GIS solutions.

EEC has extensive knowledge of Esri GIS products, having used ArcGIS software since version 3.x. Many EEC projects have been supported using the ArcGIS Desktop suite of programs, and EEC beta tested releases of ArcGIS 10. EEC was tasked with running ArcInfo 10 to discover bugs, usability issues, and possible workflow disruptions.

For more information on this exciting new partnership or EEC’s technology services, please contact This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

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Featured Projects

Litigation to Determine Responsibility for Environmental Remediation

Industry: Petroleum / Legal

EEC was retained by a Midwest law firm to provide an evaluation of the quantity of free-phase hydrocarbons beneath a small town. The hydrocarbons were allegedly released from several refineries on the outskirts of the community. Plaintiff experts alleged 17 million gallons of petroleum hydrocarbons were present beneath the community. Based on a scientific review of the data, EEC determined that the actual quantity was significantly less. Due to EEC’s evaluation, this component of the case was not challenged in court.

Project Highlights
  • Gave deposition to U.S. Department of Justice
  • Successfully established that the quantity of product beneath the community was significantly less than alleged
  • Established an even greater reduction in quantity of product beneath the refinery
  • Plaintiff did not challenge results


Litigation to Evaluate Exposure to Hexavalent Chromium

Industry: Legal

EEC was retained to provide contaminant investigation services and expert testimony regarding a community’s exposure to hexavalent chromium (Chromium VI) in surface water and groundwater. EEC provided an investigation to establish background Chromium VI concentrations and collected samples from within the existing monitoring well network to evaluate the nature and extent of the contaminant plume. The investigation and subsequent testimony also included developing a hydrogeologic model of the near-surface environment in order to determine the nature of groundwater movement and contaminant transport.

Project Highlights
  • Conducted investigation of background hexavalent chromium levels
  • Conducted weekly sampling to evaluate contaminant trends
  • Reviewed and analyzed more than 20 years of historical soil, groundwater, and surface water data
  • Gave sixteen hours of deposition
  • Prepared expert reports, rebuttals, and declarations


Litigation Involving Contaminated Housing Tract

Industry: Petroleum / Legal

EEC was retained by a major litigation law firm to investigate and evaluate the impact of soil, groundwater, and soil vapor contamination on approximately 300 residential properties. The neighborhood was built on the former location of three large oil field reservoirs, and is underlain by residual contaminants. In addition to providing sampling and analysis of soil, water, and vapor, EEC is overseeing the defendant’s consultants as they attempt to assess the plume. EEC provides front-line and one-on-one contact with community residents in the community, and has developed an exceptional rapport with them. The work includes oversight during drilling soil borings for soil testing, installation of groundwater monitoring and vapor extraction wells, vapor monitoring points, and installation of sub-slab vapor probes to evaluate vapor intrusion concerns.

Project Highlights
  • Extensive evaluation of soil, soil vapor, groundwater, and indoor air contamination
  • Investigation focusing on human health risk from shallow soil exposure and vapor intrusion
  • Vapor intrusion evaluation through soil vapor, sub-slab vapor, and indoor air sampling using state-of-the-art techniques
  • Critical community involvement
  • Exceptional rapport with community residents during investigations inside homes and on residential property


Sanitary Sewer Overflow (SSO) Settlement Agreement Expert Consulting

Industry: Municipal Wastewater / Legal

EEC was retained by a Southern California City’s outside counsel to provide expert sewer compliance consulting for consent decree and settlement agreement negotiations stemming from a clean water act citizen suit. The client relied on EEC to provide all technical consulting related to regulatory issues, sewer design, operations and maintenance (O&M) standards, performance goals, and implementation schedules.

Project Highlights
  • Consent decree and settlement agreement consulting support
  • Sewer design, capital improvement, O&M, private lateral issues, roots and grease control
  • Planning and implementation recommendations


Litigation Involving Property Devaluation and Vapor Intrusion

Industry: Petroleum / Legal

EEC was retained to perform a literature and field evaluation of impacts related to an approximately 30 million gallon petroleum product plume beneath a community. Field activity included drilling and installing groundwater monitoring wells, collecting water and product samples from within the plume, and installing soil vapor probes in basements and slab-on-grade foundations throughout the neighborhood to evaluate exposure potential from vapor intrusion. In addition, EEC conducted sampling of groundwater and sediments from an adjacent waterway.

Project Highlights
  • Vapor intrusion and ambient air sampling inside residential homes
  • Soil and groundwater sampling
  • Sampling of pore water at the groundwater/river interface
  • Identification of contaminants of concern and source locations


  • Remediation Responsibility

  • Hexavalent Chromium

  • Contaminated Housing Tract

  • SSO Settlement Agreement

  • Property Devaluation

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Office Locations

EECWorld Los Angeles OfficeLos Angeles Area Office
501 Parkcenter Drive
Santa Ana, CA 92705
Phone: (714) 667-2300
Fax: (714) 667-2310
EECWorld Mid-Atlantic OfficeMid-Alantic Office
200 Harry S Truman Parkway Suite 330
Annapolis, MD 21401
Phone: (410) 263-2234