Construction Management
The project originated as early as 1992, when the hospital noticed that the inventory records for the boiler tank did not meet underground storage tank integrity requirements. The Boiler Tank was located beneath the hospital, and directly beneath the emergency room. Bonkowski engineers devised a remedial action plan that involved removing contaminated soils and groundwater from the east side of the building, while retaining the use of the building through a combination of shoring and backup electrical generators.
Bonkowski geologists and engineers characterized contamination beneath the site, evaluated impacts to the immediately adjacent Shasta Creek, evaluated the structural integrity of existing retaining walls between the hospital building and the creek, and prepared risk assessments, feasibility studies, and managed reporting to the Water Board and State Cleanup Fund on behalf of the County.
Remedial Engineering
The project involved about every element of remedial action that can be undertaken at an active hospital facility with a leaking fuel oil tank. These included acting as the County engineer for the construction phase of the project:
- Environmental Project Management
- Site Investigation(s) and Groundwater Monitoring
- Feasibility Studies and Corrective Action Planning
- Risk Assessment and Aquatic Toxicity Evaluations
- Shoring Design and Hospital Building Health and Safety Planning
- Electrical and Mechanical Design Engineering
- Contract Management and Environmental Project Controls
- Public Bid Preparation and Contractor Selection
- Shoring Installation and Ground Shaking Monitoring
- Noise Monitoring
- Excavation and Discharge Permits
- Contaminated Soil and Groundwater Removal
- Hydraulic Control Drain and Well Point System Construction
- Excavation of the Entire East side of the Hospital Building
- Backfilling of Excavation
- Compaction and Repaving
- Electrical Service
- Groundwater Monitoring and Closure
