Page 19 - Water and Wastewater Engineering Design Principles and Practice

xvi PROFESSIONAL ADVISORY BOARD

Jimmy L. Spangler, P. E., Senior Manager, Municipal Group, Tetra Tech
Mr. Spangler received his B.S. in Civil Engineering from Michigan State University. He holds
a Class A operator’s license from the State of Michigan. His 36 years of experience includes 29
years of wastewater collection and treatment as a certified operator in positions of Plant Engineer
(Washington Suburban Sanitary Commission—3 yrs), Assistant Superintendent (City of Pontiac,
MI—3 yrs), and Superintendent (City of Lansing, MI—19 yrs) and 4 years as Deputy Public Service
Department Director (City of Lansing). These facilities ranged in capacity from 40,000 gpd to 50
mgd. The processes included screening, grit removal, primary treatment, various activated sludge
processes, phosphorous and ammonia nitrogen removal, chemical precipitation, tertiary filtration,
chlorination, dechlorination, UV disinfection, aerobic digestion, anaerobic digestion, elutriation,
WAS thickening, wet air oxidation, dewatering, incineration, and land application of biosolids. He
also has had direct involvement in facility expansion and rehabilitation projects. For the last seven
years he has been with Tetra Tech, Inc. His work includes conducting facility evaluations, review-
ing designs, preparing and reviewing operation and maintenance manuals, plant operation reviews
and inspections, process evaluations, preparing studies, and long-term capital plans.
Tetra Tech provides consulting, engineering, and technical services worldwide. The
10,000 employees of Tetra Tech provide expertise in water and wastewater facility design and
operation, water resource management, program management, and construction services.

1921 E. Miller Road, Suite A
Lansing, MI 48911
Jeffrey R. Stollhans, P.G., District Manager, Layne-Northern
Mr. Stollhans received his B.S. in Geology from Illinois State University. His 24 years of
experience in water well design and construction includes hundreds of well and pump installa-
tions throughout Michigan, Illinois, Indiana, and Ohio as well as multiple water treatment plants
throughout Michigan. He is a Registered Water Well Contractor and Pump Installer in Michigan,
Illinois, and Indiana and a Registered Geologist in Illinois, Missouri, and Kentucky. Prior to join-
ing Layne Christensen in 1989, Mr. Stollhans worked in the Ground Water Section of the Illinois
State Water Survey in Champaign, Illinois.
Layne Christensen’s Water Resources Division provides a full line of water-related services and
products including hydrological studies, site selection, well design, drilling and well development,
pump installation, and repair and maintenance. The division’s offerings include the design and con-
struction of water treatment facilities and the manufacture and sale of products to treat volatile organics
and other contaminants such as nitrates, iron, manganese, arsenic, radium, and radon in groundwater.

Layne-Northern
3126 N. Martin Luther king Jr. Blvd.
Lansing, MI 48906