Remediation

EWI is experienced with a wide range of remedial solutions based on direct experience under client and regulatory oversight programs. Available services range from simple excavations to innovative treatment systems to engineered controls designed to meet specific land use objectives.

Our philosophy is to combine industry-proven technology with innovative thinking intended to address cumulative risk. This approach allows EWI to implement highly targeted cleanup designs, which are further supported through risk-based corrective action (RBCA). We have accelerated hundreds of regulatory closures – e.g. state Voluntary Cleanup Programs, Underground Storage Tanks, Brownfields, etc. – through risk-based applications, which ultimately result in cost-effective and timely solutions for our clients.

Cleanup Technologies
EWI applies a systematic process to evaluate the appropriate cleanup technology and remedial design. This process weighs several critical factors including extent of impact, geological conditions, proven effectiveness, regulatory acceptance, and overall cost. EWI offers direct experience with various remedial technologies based on these selection criteria:

  • Product recovery & source removal
  • Pump and treat
  • Soil vapor extraction / air sparging
  • Chemical soil stabilization
  • In-situ injections / bioremediation
  • Soil encapsulation

System Design & Installation
EWI is able to coordinate and implement all phases of environmental remediation, from initial planning to system operation and maintenance. We routinely provide the following resources and services in support of an extensive portfolio of client, EPA, and state oversight projects:

  • Cleanup alternative studies
  • Product recovery / interim removal plans
  • Professional staff for system design and field oversight
  • Field crews, technicians, and equipment operators for field implementation

System Operations & Maintenance
EWI maintains personnel and equipment specifically dedicated to remediation system operations and maintenance. Related services include routine groundwater monitoring, maintenance of dedicated field equipment, and oversight of specific technical indicators, such as recovery and treatment volumes.

Related Projects

CERCLA / Superfund / NPL Project Site - Republic, Missouri
EWI is contracted to continue remediation activities for a multi-million dollar CERCLA/Superfund/NPL project site operating under Consent Decree. The extremely complex hydrogeology which underlies the location combined with a DNAPL source makes it one of the most complex sites in the State of Missouri. Read More
Convenience Store - Buffalo, Missouri
EWI was contracted to investigate a release of unleaded gasoline related to historical underground storage tank (UST) operations. The primary project concerns were petroleum constituents around an off-site office building (with basement) and a karst geological setting. Read More