Christoper S. Alger, P.G., C.E.G., C.H.G., R.E.A.

Principal

calger@irisenv.com

(510) 834-4747 ext. 21

Mr. Alger has over 22 years of experience applying geology, engineering geology, and construction skills to the investigation and remediation of environmentally-impacted sites and geologic hazards. For the past 15 years, Mr. Alger has held key positions on a number of fast-tracked environmental projects where he has been responsible for transitioning projects from investigation to remediation. Mr. Alger commonly works with engineers, geologists, and toxicologists to coordinate development of remedial approaches, identifying and filling data gaps to refine the remedial design. He typically maintains strong project involvement throughout implementation of both interim and final remediation phases. Mr. Alger specializes in effective investigation and remediation of the vadose zone and shallow groundwater. He has been instrumental in refining rapid site assessment techniques and designing pilot test methods for a number of innovative remedial technologies, including: soil vapor extraction, dual-phase extraction, pneumatic soil fracturing, solar powered systems, field laboratory screening methods, and the application of construction management critical path tools to remediation projects.

REPRESENTATIVE PROJECT EXPERIENCE:

Accelerated Site Investigation and Remediation, Lincoln Center, Stockton, California: Co-project manager for multimillion dollar, fast-tracked RI/FS project to address PCE-affected soil and groundwater at an operating shopping center in Stockton, California, under a court-directed settlement. Directly responsible for all interim and final design, construction, and operation of soil-vapor and groundwater remediation systems. Coordinated field investigations to support rapid design of 17-well groundwater extraction system, conducted aquifer testing to support design, and served as senior manager for system construction that included 500 gpm treatment plant and over 5,000 feet of double contained piping. Developed and conducted an elaborate five-day soil-vapor extraction pilot testing program and designed the resulting 35-well, 5-acre soil-vapor extraction system to eliminate elevated PCE soil vapor concentrations. The SVE system now in successful operation, was constructed throughout the shopping center using trenching and directional drilling methods to install over 6,000 feet of conveyance piping.

Remediation prior to Redevelopment, Former Automobile Plant, Milpitas, California: Created and applied a rapid team approach to perform over 26 indoor and outdoor excavations and demolitions within one year to prepare a former automobile assembly plant for redevelopment; removed, sorted, off-hauled, or bioremediated 17,000 yards of soil affected with fuels and solvents. Work was considered a primary critical path step to redevelopment and associated funding. Project was completed on schedule with no cost overruns; saved client more than $100,000 from original budget despite expanding scope due to previously undetected solvent-affected soils. Maintained daily briefing meetings with clients, construction managers, and regulatory officials to accelerate approval of each sampling event and excavation.

Remedial Excavation, Gateway Park, City of San Mateo, California: Provided environmental oversight for the City of San Mateo to facilitate remediation of soil impacted with petroleum hydrocarbons beneath a recently constructed city park. This high profile project required relocation of San Mateo's primary street access from the freeway to downtown and necessitated substantial shoring to protect the roadway and an adjacent creek. The project required continuous coordination between field sampling crews, laboratories and the excavation contractor. Soils were screened and sorted for offsite disposal if impacted, or for reuse. Work included pre- and post-construction regulatory negotiations with both the San Mateo County Department of Health Services and the RWQCB that resulted in successful closure.

Remediation for Redevelopment, San Francisco, California: Directed shored excavation to 25 feet below grade in loose, gasoline-affected sands for redevelopment of a former gas station into a multi-story building with an underground garage. Included managing confined-space underpinning and installation of a passive vapor control liner, construction management for all subgrade phases, and critical path method scheduling.

Site Remediation, former Chevron Commercial Facility, Emeryville, California: On-site project leader directing two environmental contractors excavating over 15,000 yards of petroleum- and chlorinated hydrocarbon-affected soil from a former bulk terminal and asphalt research laboratory prior to sale for redevelopment. Majority of soil was excavated and handled at night under level B (supplied air) conditions.

Vadose Zone and Groundwater Remediation Pilot Testing; various sites: Participated or directed soil-vapor extraction, multiphase extraction, air sparging, and bioventing pilot tests at a range of sites to characterize vadose-zone conditions for both feasibility studies and the design of remediation systems. This work has ranged from simple, single-day tests to detailed, multiple-scenario studies. Monitoring has included helium gas tracers, oxygen, and carbon dioxide soil-vapor analysis and pressure/vacuum instrumentation.

EDUCATION:

M.S., Geology, San Jose State University. 1991.

Soil Science Summer Program, University of California, Davis. 1986.

B.A., Geology, San Francisco State University. 1984.

A.A., Commercial Art and Design, Moorpark College. 1980.
 

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