Margaret A. "Peggy" Ganse, P.E., P.G.
Principal
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Summary of Experience
Ms. Margaret A. Ganse is the President of the firm and its sole share holder. She is a geological engineer with nearly 20 years of experience designing, managing, and performing geotechnical and tunneling projects throughout North America. Ms. Ganse started her professional career in banking, but the lure of geology and engineering coaxed her away from banking into the field of geotechnical and tunnel engineering. Throughout her career, Ms. Ganse worked with national consulting firms gaining experience and expertise in a wide variety of tunneling methods. Her experience has focused primarily on 4-ft to 16-ft diameter tunnels in the water and wastewater markets with construction budgets of $10M to $100M. Her tunneling expertise is soft ground and hard rock projects includes:
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- evaluation and selection of tunnel alignment and design alternatives;
- evaluation of ground conditions and anticipated ground behavior;
- selection of tunnel and shaft excavation and support methods;
- design of mitigation to limit impacts to adjacent structures/facilities;
- design of geotechnical instrumentation programs;
- preparation of Geotechnical Baseline Reports and contract documents;
- construction inspection, management, and claims resolution.
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In addition, Ms. Ganse is experienced in a wide range of geological and geotechnical engineering applications, including rock slope engineering, slope stability analysis, grouting and ground improvement, pipelines, mechanically stabilized earth structures, and groundwater cutoff walls. Ms. Ganse is capable of providing a full range of consulting services with an emphasis on client service, project scoping management, and technical leadership in project design and implementation.
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- Lower Northwest Interceptor Southport Gravity Sewer (CA)
- Upper Northwest Interceptor Segments 5&6 (CA)
- Groundwater Replenishment Pipeline (CA)
- Folsom East 2 Pipeline (CA)
- Pipeline 3 Relocation at SR 125/94 (CA)
- Otay Inter-Connection Pipeline Project (CA)
- Olivenhain Pipelines Project (CA)
- Camino Ruiz Conveyor Tunnel (CA)
- I-70 Twin Tunnels Feasibility Study (CO)
- T-Rex (SE Corridor) Drainage Tunnel (CO)
- Trilby Road/UPRR Flood Control Project (CO)
- Thornton North Washington Force Main (CO)
- Standley Lake Outlet Tunnel Initial Support Evaluation (CO)
- Stapleton Redevelopment Project (CO)
- Diamond Avenue (SR-66) Storm Drain Tunnel (IN)
- Weinbach Avenue Storm Sewer (IN)
- ACWP Manor Hills Wastewater Line (TX)
- Walnut Creek North Oaks Sewer Tunnel (TX)
- Upper Shoal - Spicewood Branch at Wood Hallow Drive Sewer Tunnel (TX)
- US-290 Tunnel Crossings (TX)
- Walsh Tract Interceptor (TX)
- Parley's Canyon Trail Tunnel (UT)
- Las Vegas Boulevard Pedestrian Tunnels (NV)
- I-95/Route 1 Interchange (VA)
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Education
Colorado School of Mines, M.E. Geological Engineering, 1993
Bloomsburg University of Pennsylvania, B.S. Geology, 1991
Bloomsburg University of Pennsylvania, B.A. Managerial Economics, 1988
Professional Registrations
Professional Engineer: Colorado, New Mexico, North Carolina, South Carolina, South Dakota, Texas
Professional Geologist: Minnesota
Professional Societies
♦American Underground Construction Association: Member, Grouting Committee secretary
♦Association of Engineering Geologists: Chair of Rocky Mountain Section - 2000-2001; Member Board of Directors - 2000-2000; Tunneling Committee Member since 1999; Association Membership Director 2000-20006
♦American Society of Civil Engineers: Member
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Publications and Papers
"Soil Mixing to Stabile Organic Clay for I-95 Widening, Alexandria, VA," with James R. Lambrechts and Carrie A. Layhee, Proceedings of the American Society of Civil Engineers Grouting Conference, New Orleans, LA 2003.
"AUA Guideline for Backfilling and Contact Grouting of Tunnels and Shafts," Textbook Published by the American Society of Civil Engineers, 2002.
"Comparison of Penetration Test Results of Grouts Made With Various Ultrafine Cement Products," with Raymond W. Henn et al, Proceedings of the Rapid Excavation and Tunneling Conference, San Diego, CA, June 2001.
"Structural Roadway Spans the Gap," with Kent A. Pease and Stephen N. Long, ASCE Geotechnical Special Publication, Advances in Transportation and Geoenvironmental Systems Using Geosynthetics, August 2000.
"Ultrafine Cement Grouting Field Demonstrations and Testings," with Raymond W. Henn, Association of Engineering Geologists News, Volume 43, Number 3, June 2000.
"Urban Tunneling Through Variable Geologic Conditions - A Case Study of the Pipeline 3 Relocation Project at SR 125/94," with Raymond W. Henn and Gardenia Gomez, Proceedings of the North American Tunneling, Boston, MA, June 2000.
"Remediation of Abandoned Mine Sites Using Constructed Wetlands: A Colorado Perspective," with James T. Herron, Proceedings of the 12th Annual Meeting of the American Society for Surface Mining and Reclamation, Gillette, WY, June 1995.
"Geotechnical Design of a Four-Stage Passive Mine Drainage Treatment System, Proceedings of the 15th Annual Meeting of the Abandoned Mine Land Programs, Jackson, WY, September 1993.
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Presentations
"Tunneling through Difficult Ground," Moderator of program presented at the 45th Annual Meeting of the Association of Engineering Geologists, September 2002.
"Urban Tunneling Maintains Southern California Water Supply Route," presented at the Rocky Mountain American Waterworks Association, September2002.
"Ultrafine Cement Grouting Field Demonstration and Testing," presented at the 43rd Annual Meeting of the Association of Engineering Geologists, September 2000 and the Rapid Excavation and Technology Conference, June 2001.
"Spanning the Gap: Roadway Construction Over an Abandoned Mine," presented at ASCE GeoDenver, August 2000 and the 41st Annual Meeting of the Association of Engineering Geologists, September 1998.
"Urban Tunneling Through Variable Geologic Conditions - A Case Study of the Pipeline 3 Relocation Project at SR 125/94," presented at the 42nd Annual Meeting of the Association of Engineering Geologists, September 1999 and North American Tunneling Conference, June 2000.
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