Relevant Project Experience

Instructor Experience:

Instructor for the ASCE short course on Design of Waste Containment Liner and Final Cover Systems, as well as several other courses.  See “Conferences and Teaching Courses” for a complete list. 

Engaged by the California State Water Resources Control Board in 2015 for 2-year contract to develop training course curriculum and to provide Geosynthetic Liner and Cover Design training services to Water Board staff.  Contract renewed for additional 2 years in 2019-20.


Design, Construction, and Project-Management Experience:

Project manager, designer, and CQA management for new 13.5-acre Cell 8 at the Cowlitz County Headquarters landfill; project included landfill gas, storm water, and road infrastructure upgrades. (2016-2018).  This was followed by design of 13.7 acre Cell 9 in 2019.

Recognized national expert for fueling depot secondary containment lining systems for BNSF railroad tasked with providing design review services and CQA services directly to BNSF  as well as to its general civil consulting engineers on dozens of facilities nationwide from 2007 to the present (2019).

Engineer for Lane County Solid Waste Management division of Public Works Department;  provided annual opinions of cost for landfill closure and thirty-year post-closure period; designed new 1.3 MM gallon leachate holding tank, new pump station, and integrated piping infrastructure (2013-2016); provided permitting, design and construction management for 9 acre piggyback liner system for Phase V-B (2014-15);  provided permitting and design for 17 acre closure of Phase III landfill (2009); provided permitting, design and construction management for 17 acre double-lined Phase V landfill cell and pump station (2007); provided permitting, design and construction management for 19 acre closure of Phase I/II landfill using innovative 2-season construction approach (2006-2007); provided past master planning for that site as well as site fill and master planning (2006) at their Short Mountain Landfill; assisted with resolution and trial testing of reverse-osmosis leachate treatment plant including residuals management (2003-2015).  In addition, coordinated ground water monitoring, landfill gas systems, annual volume estimates for waste and leachate, leachate management planning, and construction services for their active and closed landfill facilities around Lane County (2003-2015).  Closure and post-closure cost estimates (2003-2018).  Continuing services for 3-year contract starting in 2019 for landfill master planning, floating cover rehabilitation in leachate pond, new 1-mile haul road, new 90’ steel girder bridge over swale, and new cell design.

Provided subconsulting services for US Bureau of Land Management regarding of final cover system design and construction, and CQA assistance, for closure of Bayer-Monsanto Blackfoot Bridge phosphate mine overburden cover in Idaho (2013-2019).

Consultant for review of slope deformation issues due to waves on 5 very large lined reservoirs (totally approx. 350 acres) in southern California (2017-18).

Consultant to another engineering firm to perform design calculations, coordinate geotechnical testing, peer review of construction drawings and specifications, and advice for CQA for 35-acre landfill closure utilizing composite cover liner system at site in Morgan County, Alabama (2017).

Expert reviewer for lining and monofilling of wastewater treatment ponds and solids in northeast Portland, OR as subconsultant to Brown & Caldwell.  CQA Certifying Engineer for lining sludge monofill for the City of Portland’s Triangle Lake Wastewater Treatment Plant (2013), and CQA for lining Phases 3 and 4 settlement lagoons (2015).  Continued consulting services on project design, construction, and pond operations (2015-2017).  CQA Certifying Engineer for cover liner system on the sludge monofill for the City of Portland’s Triangle Lake Wastewater Treatment Plant (2019).

Provided detailed post-closure care cost estimate to allow buyer and seller of newly-closed industrial landfill to consummate transfer of property to the Willamalane Parks District near Eugene, Oregon (2017).

Provided slope stability analyses, peer review of construction design drawings and specifications, design calculations, and CQA review of shear strength testing for Cell 7 construction at the Dry Creek landfill near Medford, Oregon (2017).

Provided project constructability review and letter of opinion regarding design and performance of mining tailings pile base liner design for project in Michigan (2017).

Consultant for lining system design for gypsum stacks in Brazil (2016).

Engineer for permitting, design, and construction of water-balance cover for 25-acre old landfill in Cody, WY (2016).

Project manager, designer, and CQA management for new thirteen-acre Cell 7 at the Cowlitz County Headquarters landfill; project included landfill gas, storm water, and road infrastructure upgrades. (2014-2016)

Design engineer and CQA certifying engineer for water-balance final cover, including silva-culture considerations, for old forest products 45-acre landfill in NW Washington; project permitting through construction CQA (2013-16).

Project manager and designer for new Cell 6 at the Cowlitz County Headquarters landfill;  provided fast-track design and CQA management and certification for new 2.5-acre cell to allow the new owner to begin operations and followed immediately with a six-acre cell addition; concurrently provided overall client services for new landfill gas flare and  header system design and construction and air permitting and risk evaluation. (2013-2014)

Engineer for new master plan and re-permitting to change regional forest-products industrial landfill in SW Washington to regional county-owned MSW (Municipal Solid Waste) landfill; work included coordinating with SEPA requirements, revising engineering report including slope stability analyses and alternative liner demonstration, estimating development costs, and following closure and post-closure procedure.  Permitting and preliminary engineering work occurred from 2011 to 2013.

Solid waste engineer consultant for the Coffin Butte Regional Landfill in Benton County, Oregon for 20 years from 1995 to 2014.  Provided services to plan, permit, design, and provided construction certification services for 6 new double-lined landfill cells, 5 landfill closures, two new double-lined leachate ponds,  floating covers and inflated cover for leachate ponds, leachate evaporation system, four leachate pump stations and pipelines, permitting and design for a direct/reverse osmosis leachate treatment facility complete with residuals management program, master plan updates, stormwater management plans and infrastructure design, geotechnical investigations and analyses for all of the above.

Engineer for Preliminary Engineering and Design Report (2012) for new sixteen-mile 8”-dia leachate force main and pump station; performed hydraulic analyses, pump selection, pump station design, pipeline alignment and profile design, and preliminary construction cost estimate to transfer leachate from Headquarters Landfill in the Mt. Saint Helens Tree Farm to the POTW in Kelso, Washington; work included evaluations of alternative alignments, preliminary evaluation of soils and geologic hazards, evaluation of methods of construction, cost estimates, and support for SEPA process; continuing working as Quality Control reviewer for final design in 2013.  Pipeline had successful startup in March 2015.

Engineer for development of proprietary under-slab methane collection system for construction around the City of Los Angeles. (2013)

Engineer for preparation of landfill master plan, design engineer for ACAP (Alternative Covers Assessment Program) closure for existing landfill, and design engineer for construction drawings for first and second cells of new landfill Phases 1 and 2 for Johnson County in Wyoming near Buffalo, WY.  Assisted with preparation of project contract documents 2014, and construction inspections which was successfully completed in 2015.

Reviewer of slope stability  for 140-acre, 420-foot high silver/gold heap on composite liner system in Nevada (2013).

Expert design peer review and construction certifying engineer for 150-acre valley-style heap-leach pad for Carlota Copper Company in Miami, AZ; project review and CQA involved composite GCL and 80-mil LLDPE liner over 175 acres, double liner with leak detection system over 15 acres, two double-lined ponds, 90-million gallon double-lined containment pond, HDPE lining of concrete tanks for the SX/EW process solutions, and storm-water improvements for contact- and non-contact waters. (2008-2011). Consulted on site closure options (2013).

Reviewer of master-plan layout for new Waste Management Facility (WMF) on Grand Cayman Island; Thiel Engineering’s master-plan suggestions were accepted for moving forward with the project, and Thiel Engineering provided support to the EIS process. (2012-2013)

Provider of engineering design drawings for secondary leak detection and collection system below concrete roll-off container pads used below public dumping Z-walls at Oregon central valley landfill;  also provided construction design and specifications for storm-water pump station and force main to transfer storm-water collected from these pads to the leachate ponds (2012).

Provider of CQA services for landfill liner installation in Vietnam. (2012)

Engineer of record for engineering design and operations plan to permit two double-lined ponds in McKinley, New Mexico for the temporary storage and evaporation of by-product waste water from a proposed facility that uses in-situ leaching for the extraction of uranium.  The liquids to be contained in the ponds would be the concentrate from reverse-osmosis filtration units.  The design consisted of two double-lined HDPE ponds, about three acres each (nominally 10 million gallons capacity each, plus 3 ft freeboard), with incorporation of perimeter-mounted liquid atomizers to enhance evaporation.  The ponds were designed with special provisions to be constructed over soils that could potentially collapse when saturated. (2009)

Construction certifying engineer for 3.5-acre hazardous waste landfill expansion in eastern Oregon. (2011)

Engineer of record for ACAP permitting for MSW landfill in Spokane, Washington. (2011)

Design reviewer of final cover system and CQA services for geosynthetics installation, on Alcoa triple-lined landfill in Ferndale, Washington (2011).  Provided CQA inspection of welding of double liners together in the existing anchor trench in 2014 and 2015.

Provider of construction drawings and specifications for final cover construction of landfill in Wamsutter, WY. (2011)

Provider of expert review and opinion, in conjunction with Dr. Ed Kavazanjian, on controversial final cover project for Tullamarine hazardous waste landfill in Melbourne, Australia. (2011)

Expert witness for litigation of geotechnical aspects of C&D landfill reclamation project in New Mexico. (2010-13)

Certifying engineer for CDF (confined disposal facility) pond liners on Superfund project for the Spring Creek Sediment project near Redding, CA; worked as first-tier contractor under CH2M Hill; provided design review recommendations, construction CQA, and final certification. (2009).

Expert for Defendant in preparation of litigation for failed wastewater treatment pond liner in Idaho. (2010)

Construction certifying engineer and peer reviewer, for six large (75-acre each) lined tertiary treated-water storage ponds for the Los Angeles County Sanitation Districts.  The projects, located in the cities of Lancaster and Palmdale, CA involved approximately 3 million cubic yards of embankment, 450 acres of 60- and 80-mil HDPE geomembrane installation, large pipe penetrations, and soil-cement armoring. (2007-2010)

Project manager for water-balance alternative cover to be permitted in central Washington Wenatchee landfill in 2009; tasks involved soil resource investigation, laboratory testing of soil-water characteristics, water-balance modeling, and design and CQA reports for regulatory approval. (2009)

Project manager for ASP-based compost facility design and permitting for Valley Landfills near Corvallis, Oregon. (2009)

Provider of slope stability analysis and review for proposed landfill master plan expansion at the Dry Creek Landfill in Medford, Oregon. (2009-15)

Expert peer reviewer for a superfund landfill closure design of a Weyerhaesuer landfill in Kalamazoo, Michigan. (2008)

Provider of expert testimony on liner systems for a public hearing for a landfill expansion in McMinville, Oregon. (2008)

Engineer for geotechnical investigation and foundation recommendations for gas-to-energy plant at a landfill in eastern Oregon. (2008)

Certifying engineer-of-record for CQA of four-acre composite liner expansion for a landfill near Spokane, Washington. (2008)

Developer of landfill master plan for Park County in Wyoming for an existing landfill site near Cody, Wyoming. (2008)

Expert reviewer of geotechnical investigation, settlement calculations, and stability analyses for a new landfill in Brevard County, Florida.

Developer of preliminary grading and liner system design for a 500-acre system of evaporation ponds for a potash mine in New Mexico. (2008)

Designer and certifying engineer-of-record for sixteen-acre landfill expansion (Cell 5) for the Weyerhaeuser landfill near Longview, Washington.  Earthwork was certified in 2008; partial liner construction performed in 2009, remaining work was done in 2011.

Construction certifying engineer for CQA of twenty-acre double-lined evaporation pond for oil-and-gas production water in central Wyoming. (2008)

Design engineer and certifying engineer of record for the following projects: four- acre composite liner expansion for Weyerhaeuser landfill near Longview Washington;

CQA and certifying engineer of record at Columbia Ridge Regional Landfill in Arlington, Oregon for several of their landfill cells and closures as follows:. sixteen-acre composite liner expansion for Module 12 (2007); 33-acre Arlington Landfill Alternative Final Cover System (evapo-transpiration cover, (2006); Module 11 composite liner (2005); twenty-acre landfill cells Module 9A (2002) and Module 9B/10 (2003);  Also designer of re-lining system of leachate evaporation pond (2005).

Certifying CQA engineer of record at Chemical Waste Management site near Arlington, Oregon for double-composite liner for 4-ac L-14 Cell 3 hazardous landfill (2011), 4-ac L-14 Cell 2 hazardous landfill (2005), 7-ac L-14 Cell 1 hazardous landfill (2003),  6-ac closure for hazardous waste landfill L-10, 7-ac new cell for haz-waste landfill L-14 Cell 1 (2003); permitting increased slopes and final cover design for three of the site’s hazardous waste landfills;

Design engineer for master plan and closure plan update for landfill in Missoula, Montana. (2006)

Peer reviewer and 2005 certifying construction engineer for Los Angeles County Sanitation Districts Calabasas North Ridge Phase 1 Liner System; reviewed plans and specifications and acted as CQA project manager and certifying engineer for 22-acre expansion in conjunction with Vector Engineering; also performed same certifying engineer function for the eighteen-acre expansion at this site in 2006 and again in 2008.

Certifying construction engineer for the following construction projects: North Marion County Disposal Facility Cell 3 closure near Salem, Oregon. (2005)

Certifying construction engineer for double-lined evaporation pond for natural gas production water at site near Big Piney, Wyoming. (2005)

Design engineer for five-acre composite lined landfill expansion in Missoula, Montana. (2005)

Design engineer and permitting of leachate land application and leachate re-introduction to landfill for Crook County landfill site near Prineville, Oregon. (2005)

Consultant for final closure and abandonment of sludge ponds and adjacent landfill for Weyerhaeuser paper mill shut-down in southern Oregon. (2004)

Design engineer for projects for the following projects: new ten-acre composite lined landfill in Missoula, Montana. (2004)

Design engineer for twenty-acre landfill cell near Roosevelt, Washington. (2004)

Design and construction certifying engineer for ten-acre composite liner landfill expansion for Crook County near Prineville, Oregon. (2003)

Design and construction certifying engineer for closure of Pope & Talbot wood-waste landfill near Oakridge, Oregon. (2001 and 2003)

Design peer reviewer and construction certifying engineer for Los Angeles County Sanitation Districts, Puente Hills Phase five-liner system, a twenty- acre expansion consisting mostly of 1.5:1 slopes and narrow benches, having an encapsulated GCL liner design, and costing $7.5 million. (2003)

Design and construction certifying engineer for 3.5-acre double-lined landfill cell at Coffin Butte landfill near Corvallis, Oregon. (2003)

Operational and design consultant and advisor for Lane County, Oregon solid-waste division. (2003 and ongoing)

Design and construction certifying engineer for twenty-acre composite landfill liner and three acre double-lined ash monofill cell for Regional Disposal Corporation near Roosevelt, Washington. (2003)

Design and construction certifying engineer for ten-acre composite liner for pulp and paper landfill for Weyerhaeuser landfill near Longview, Washington. (2003)

Expert consultant and provider of sealed calculations regarding slope stability for double-liner landfill expansion utilizing encapsulated GundSeal for Brunner landfill site near Zelionople, Pennsylvania. (2002)

Design engineer and certifying construction engineer for nine-acre landfill closure at the Weyerhaeuser Regional Landfill in western Washington. (2002)

Certifying CQA engineer of record for six-acre double-lined ash monofill utilizing encapsulated GCL and electric leak detection in Marion County, Oregon. (2002)

Design engineer and certifying construction engineer for twenty-acre composite landfill liner expansion at the Roosevelt Regional Landfill (Area 10) in eastern Washington. (2002)

Certifying CQA engineer of record for four-acre landfill Phase IV Cell 2 expansion in The Dalles, Oregon using GCL composite liner. (2002)

Reviewer of closure and post-closure costs for Short Mountain Landfill in Lane County, Oregon. (2001)

On-going peer-reviewer for engineering firms in California, Oregon, and Washington.

Certifying engineer-of-record for closure construction of two MSW landfill sites in Lassen Co., California. (2002)

Design and construction engineer for repair of leaking pond liner in Classical Chinese Garden, Portland, Oregon.

Design engineer and certifying construction engineer for twenty-acre composite landfill liner expansion and double-lined ash monofill, at the Roosevelt Regional Landfill in eastern Washington (Area 9 and Ash Stage F1). (2001) 

Lead author of Gundseal Design Manual, the most comprehensive guide in the industry for designing with GCL liners; co-authors included Dr. Dave Daniel, Mr. Richard Erickson, Dr. Ed Kavazanjian, and Dr. J.P. Giroud. (Published in September 2001). 

Geosynthetics design expert and engineer of record to perform hydraulic and slope stability calculations to achieve design approval for alternative GCL double-liner system for two landfills in Pennsylvannia. (2001)

Geosynthetics design expert to achieve alternate GCL liner design approval for Marion County, Oregon ash monofill. (2001)

Geosynthetic expert subconsultant to design exposed geomembrane cover for two Yolo County experimental bioreactor cells.

Certifying CQA engineer of record for five-acre landfill Phase IV Cell 1 expansion in The Dalles, Oregon using GCL composite liner, including three acres double-lined with leak detection that was verified using electric leak location techniques. (completed July 2001)

Geosynthetics expert consultant providing design for slope stability analyses and material specifications and directing construction materials acceptance testing for the Dry Creek Landfill Cell 3 construction in southern Oregon.

Expert witness for dispute resolution regarding multi-million square foot cover installation for site remediation; issues involved geomembrane wrinkle management and allowable defects.

Design engineer and certifying construction engineer for four-acre composite landfill liner expansion (Cell B) at the Weyerhaeuser Regional Landfill in western Washington. (2000)

Design engineer and certifying construction engineer for twenty-acre composite landfill liner expansion (Area 8)at the Roosevelt Regional Landfill in eastern Washington. (2000)

CQA engineer of record for clay-composite landfill liner expansion at the Wasco Landfill in The Dalles, Oregon. (Phase IIIC – 1999).

CQA engineer of record for fifteen-acre composite landfill liner expansion at the Roosevelt Regional Landfill in eastern Washington (Area 7 – 1999).

Engineer and CQA officer for new eight-acre, triple-lined landfill cell at the Coffin Butte regional landfill.  The new cell, constructed in 1999, includes a unique temporary sump, custom-specified geomembranes for slope stability, and a double-nonwoven GCL.

Project manager for public recycling facility at the Gaffin Road transfer station in east Salem, Oregon;  project included nine-foot high geosynthetic reinforced soil retaining wall for public tipping.

Expert peer reviewer for final closure design and construction of the Cowlitz County landfill in southwestern Washington.

Project manager for selection, procurement, permitting, and installation of state-of-the-art direct-osmosis leachate management system at the Coffin Butte landfill.  This multi-million dollar project began in 1995 with a review of over twenty leachate treatment options, followed by four field-scale pilot plant studies.  Final project included an 8,000 sq. ft. building underlain by a liner and leak detection system, four-million gallon double-lined surge pond, and first-of-its-kind inflatable cover over the surge pond to keep out rain water.

Expert witness for two confidential projects involving failures associated with geomembrane liners. (1998 and 1999)

Preparer of design and construction documents, coordinator for permitting, and CQA engineer of record for a new three-acre double-lined landfill cell at Coffin Butte landfill.  (1997)

Manager of fast-track permitting, design, and construction, and CQA of leachate pond embankment raise with a composite liner at the Coffin Butte landfill. (1996)

Preparer of design and construction documents, coordinator for permitting, and CQA for a thirteen-acre geomembrane closure at Coffin Butte landfill. (1996)

Expert peer reviewer for geosynthetic composite liner design and stability for a large canyon landfill incorporating 1.5:1 side slopes over 100 feet high in Ventura County, California (Toland Road).

Director of an audit of a new geomembrane manufacturing line for two major national solid waste companies.

Preparer of pro-forma economic analysis for consideration of a new landfill for Waste Control Systems, Inc. in western Oregon.

Consultant, engineering, and CQA services to Weyerhaeuser Corporation regarding landfill design and operations for their Headquarters solid waste facility in Washington. 

Evaluator for closure options for Weyerhaeuser North Bend landfill in Oregon.

Preparer of pro-forma economic analysis for consideration of a new landfill for Weyerhaeuser in North Bend, Oregon; prepared new landfill design and permit application package for the DEQ; engineer of record during construction of the first three-acre Cell 3A in 1997 and the second three-acre Cell 3B in 1999.

Provider of expert sub-consultant services for liner and underdrain design at the BFI Keller Canyon facility in California.

Geosynthetics and slope stability subconsultant to EMCON for the City of Willits landfill closure design.  Design involved innovative PVC/geotextile composite covered by exposed coarse rock on slopes as steep as 2:1.  Special design precautions were developed against the effect of gas pressures on the slope stability.

Expert consultant and witness related to large-scale landfill cover slope stability failure in the Midwest; responsibilities included determination of cause of failure and the proposal and review of remedial solutions. 

Preparer of rock quarry master plan and reclamation permitting for S2F Corporation of Albany, Oregon.  The rock quarry end use is anticipated to be a landfill.

Peer review and economic evaluator of landfill design for Rogue Waste Systems, Inc. in southern Oregon.

Expert peer reviewer of landfill designs for regional Minnesota engineering firm (Wenck Associates).

Expert peer reviewer for United Waste Systems, Inc.; peer reviews were primarily related to five different landfill cover and bottom liner designs prepared by other consultants. 

Provider of expert technical and economic evaluation of numerous alternative liner designs for large Bay Area canyon landfill (BFI Corinda Los Trancos), especially with regard to geosynthetic clay liners (GCLs) in lieu of the prescriptive compacted clay composite; work involved orchestrating product development and testing for several manufacturers.

Project manager for new cell design for Chiquita Canyon Landfill near Los Angeles, California; project involved construction plans, specifications, and construction quality assurance manual. This was one of the first projects in California to use a GCL in the full base liner as a Subtitle D alternative.

Client director for several Sanifill projects over an eighteen-month period for two landfills in Oregon (Hillsboro and Northern Wasco); directed activities related to permitting, final design, and construction.  Projects included land use (support role) and wetlands permitting (support role), new cell permitting, two new cell designs, final cover design, operations plans, and CQA.

Project manager for the siting, permitting, design, and construction of a large complex pulp sludge and inert waste landfill and infrastructure for the Weyerhaeuser Company in southwest Washington.  The project was complex, requiring more than twenty permits and four years to complete.  Significant features included the following:  a comprehensive siting study that evaluated over 35 sites in a thirty‑mile radius; public opposition issues; highly variable volcanic soil conditions; a complex groundwater regime; the need for a rail facility for waste unloading and leachate loading; a three-acre double-lined leachate lagoon; a 320-acre composite lined landfill with a complete underdrain system and innovative geomembrane specifications; large storm water control structures; ten acres of created wetlands; new off-channel fish ponds; and a stream relocation with the creation of 1,500 feet of fish channel habitat.  The landfill will be constructed in two-year cells and have a life ranging from 30 to 50 years.  The planned capacity is 50 million cubic yards.  Full-time construction resident engineer for $10 million construction project that included the first eighteen‑acre cell and landfill infrastructure at the site.

Designer and peer reviewer for composite liner and subdrain system construction drawings and specifications for Ox Mountain Landfill near San Francisco, California; project elements included designing amended soil, geomembrane composite liner on 2:1 slopes, and underdrain system for side-slope seeps.

Project advisor for GCL liner design for Kiefer Landfill (two consecutive years of construction).

Project manager and lead engineer for unique landfill closure for Louisiana Pacific.  Design for this Ukiah, California site converted closed landfill into a vineyard.  Technical justification was provided by a closed-loop groundwater interception pond and slurry wall where the groundwater was used for vineyard irrigation during the summer.

Project manager and engineer of record for design and construction of 37‑acre landfill closure for Cowlitz County, Washington; project utilized first‑of‑its‑kind 60-mil very low density polyethylene geomembrane with a co‑extruded 6-mil white veneer.

Lead project engineer for the design of the Columbia Ridge Regional Landfill and Leachate Evaporation Pond near Arlington, Oregon.  Evaluated geotechnical resources and stability; designed the landfill composite liner and leachate evaporation pond; prepared the engineers’ cost estimate; supervised project geotechnicians, project specifications, and site permitting; conducted field test fills; and authored design reports. 

Engineering task manager for the design and construction of an eight‑acre partial landfill closure for the Coffin Butte Regional Landfill near Corvallis, Oregon.

Project manager for evaluation of postclosure monitoring and maintenance program for a closed fifteen-acre landfill in Yamhill County, Oregon.  Issues included landfill gas, cover vegetation, side slope seeps, storm water control, and ground and surface water monitoring.

Client director for final design of ten-acre composite landfill liner and three-acre double-lined leachate lagoon for Coffin Butte Regional Landfill.

Design reviewer for 190-acre St. Johns Landfill cover reclamation plan in Portland, Oregon; work involved evaluating impacts of proposed vegetation on the cover design.  Design suggestions were made that saved METRO about $2.5 million in construction costs.

Lead project engineer for permitting design drawings for two major hazardous waste landfills in central California.  Designs included double composite base liners, a leachate collection and removal system, leak detection systems, and composite-cover lining systems.

Preparer of permit engineering drawings for three one-acre hazardous waste surface impoundments for Chemical Waste Management in central California, featuring a triple-lining system consisting of bottom and top composite liners with an intermediate synthetic liner.

Project manager for economic evaluation, preliminary design, and permitting for a new county landfill in Clatsop County, Oregon; work included projecting tipping rates over a twenty-year period.  Design included an innovative liner system that set an alternate regulatory standard in western Oregon.

Project manager for feasibility evaluation of a single-purpose, composite-lined landfill to take wastes from a magazine recycling paper mill in western-central Oregon; prepared preliminary design alternatives and life-cycle cost estimates spanning the entire project, from permitting through postclosure care.

Project manager for landfill development, operations, and closure plans for the Coos County, Oregon ash monofill.

Project manager for structural design of a 3,000 sq. ft. transfer station near Raymond, Washington;  designed eighteen-foot high concrete retaining wall, slabs, and drains and coordinated metal building procurement.

Project manager for geotechnical evaluation of sixteen miles of existing private railroad; work included assessing drainage, slope stability, and landslides.

Engineer of record for construction certification of an eight-acre composite liner landfill expansion for the Cowlitz County Landfill in Washington.

Resident engineer during construction of the $2 million Module 1 landfill composite liner and leachate evaporation pond at the Columbia Ridge Regional Landfill.

Geotechnical engineer for evaluation of stability and settlement considerations for vertical expansion of a 25-acre landfill built over 200 feet of unconsolidated, saturated marine sediments; work included managing a field testing program including cone penetrometers, field vane shear testing, and extensive sampling for laboratory testing.

Project manager for the design of a municipal solid-waste compost storage facility liner for the Portland, Oregon Metropolitan Service District.

Geotechnical engineer responsible for providing foundation and retaining wall design parameters for Metro Household Hazardous Waste Facility in Oregon City, Oregon.

Lead project engineer for a process and surface water management system design at the Bohemia Lumber Company in Grass Valley, California; project included a double-lined surface impoundment, run-on control, a concrete diversion pipeline, and discharge alternatives.

Lead geotechnical engineer for a landfill investigation at Clover Flat Landfill in Napa County, California; project included field reconnaissance, rock core drilling, and laboratory testing.  Performed rock slope stability analyses and assessed various liner design and construction alternatives.

Lead project engineer for the design of a synthetic-lined surface impoundment for San Diego Gas and Electric Company; project completed using computer-aided drafting and design tools.

Evaluator of cyclone efficiency for tailings sand separation at Chino mines in New Mexico.

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