Shell Oil Company

WPI Role: 
Southern California
Reference Information: 

Shell Oil Products US Ms. Karen Lyons

Scope of Work: 
Assessment and Preparation of Env. Documents
Hazardous Materials/Waste Investigation
Hazardous Materials/Waste Disposal
Underground Storage Tank Removal
Underground Storage Tank Upgrades
Emergency Response
Remedial Excavations
Facility Demolition/Modifications
Facility Construction

WPI has served as one of Shell Oil Products US's (Shell) primary consultants for environmental project management and consulting services at over 600 locations throughout the Western US.  WPI is currently the primary environmental consultant on 220 Shell stations in California and Nevada.  In this capacity, WPI manages all aspects of each project, including budgeting, sub-contractor qualification and selection, environmental assessment services (Phase I and II environmental site investigations) as well as the design, construction installation and operation/maintenance of soil and groundwater treatment systems.


WPI designed, constructed, installed, operated and maintained remedial systems with all in-house personnel.  Types of these systems include soil vapor extraction, dual phase extraction and multi-phase extraction systems that use a variety of contaminant vapor treatment technology, such as catalytic and thermal oxidizers, internal combustion engines and activated carbon.


Groundwater remediation installations have included air sparging, carbon adsorption, air stripping, oxygenation, bioremediation, and ozone/hydrogen peroxide systems.  We have also used in-site chemical oxidation at numerous sites, using a variety of oxidizing agents (e.g., potassium permanganate, hydrogen peroxide, Fenton’s Reagent, etc.) to effectively reduce a variety of soil and groundwater contaminants to concentrations that are acceptable for regulatory approved closure.  We are currently operating remediation systems at approximately 100 sites.


The WPI feasibility/treatability analysis generally includes consideration of green remedial methods (such as monitored natural attenuation) that significantly reduce factors such as site visit requirements or utility usage. Remedial methods such as these reduce the over-all environmental impact created by conventional remedial activities.


As part of this program, WPI is responsible for profiling, transportation and disposal of both hazardous and non-hazardous waste.  A WPI waste coordinator oversees the disposition of over 235 separate source events per year.  Types of waste vary from a single drum of groundwater to 3,000 tons of impacted soil.  Disposal options are evaluated with a special emphasis placed on recycling, where the waste is destroyed the residual soil and water is reused.


WPI also provides environment oversight for construction at Shell’s fueling facilities.  WPI has monitored air quality to ensure compliance with South Coast AQMD Rule 1166.  During construction projects, soil samples are obtained at the discretion and direction of governing agency; most commonly from below former UST and piping locations.  Soil samples are also routinely obtained from soil stockpiles for disposal profiling.  All analysises are conducted by an independent California certified analytic laboratory.  Construction activities and analytical results are documented in a report reviewed, signed and stamped by California professional engineer or geologist.  These reports are submittal to the appropriate agency on behalf of Shell.