EnvApps provides complete and focused engineering services to document site conditions and remediate contaminants in a professionally sound and cost-competitive manner. Cleanup techniques typically employed to remediate impacted soil and/or groundwater include:
- Soil Vapor Extraction
- Dual-phase Extraction
- Product Recovery (Active and Passive Systems)
- Groundwater Extraction, Treatment, and Discharge
- In-situ Injection Technologies including Chemical Oxidation, Aerobic and Anaerobic Bioremediation
- Soil Excavation and On-site Treatment or Off-site Disposal
- Risk-Based Corrective Action (RBCA)
- Air and Ozone Sparging
EnvApps will select the right approach to be implemented for each particular set of site conditions, and will not push the latest technology just because it is a good marketing tool. All techniques will be carefully considered. EnvApps focuses on the ultimate goal of obtaining site closure from lead regulatory agencies in a timely and cost-effective manner. By reviewing available information early in the project, EnvApps can determine its adequacy and identify data gaps which may extend the project or pose regulatory concerns. Significant project cost savings can be realized if the site assessment focuses on the critical information required for remediation design and implementation.
Engineering services provided by EnvApps include:
- Evaluation of Remedial Options
- Engineering review of site assessment & health risk studies
- Preparation of remedial options report or site closure recommendation
- Feasibility studies
- Engineering Design
- Cost estimates, both short-term and project duration
- Conceptual designs for soil and/or groundwater remediation, including groundwater and contaminant transport modeling
- Engineering investigations (e.g. soil vapor extraction and groundwater pump tests)
- Process and instrumentation diagrams/construction plans and specifications (including civil, mechanical, and electrical details)
- Equipment specifications/contractor bid packages
- Regulatory Services
- Preparation of site assessment reports, remedial action (corrective action) workplans, and quarterly monitoring reports
- Permitting of remediation systems including air quality, water discharge, fire department, and state/local remediation permits
- Negotiations with regulatory agencies to determine cleanup levels
- Implementation and Operation and Maintenance (O&M)
- Preparation of Construction Requests for Proposals (RFPs)
- Construction Bid Evaluation & Management
- Construction
- System O&M
- System performance reviews
- Regulatory reporting and recommendations for site closure
To reach site closure with minimal delays and expenditures, EnvApps develops an overall approach which features focused site assessment, practical engineering, solicitation of competitive equipment and construction quotations, and an aggressive regulatory posture.
EXAMPLE PROJECTS:
- Design, install, and operate 10-well 75 gpm dissolved nitrate groundwater extraction system, extracting _____ tons of nitrate over a ____ year period.
- Design, install, and operate 1500 scfm VES in operating unit of major oil refinery.
- Design, install, and operate numerous product recovery systems in marine terminals and refineries of major oil companies. One project included installation of a 125 foot long product intercept trench, using the bio-polymer slurry method within saturated marine sands adjacent to a seawall.
- O&M of a 31-well groundwater and product recovery system to control plume migration at major oil refinery.