Our Staff
Laurel Fischer Mueller, President, Certified Professional Soil Scientist and Soil Classifier (CPSS/CPSC), Geomorphologist, SEO
Laurel (a.k.a. “The Soil Lady”) is the founder and president of Soil Services Company, Inc. She is a Certified Professional Soil Scientist and Soil Classifier. Prior to starting the firm in 1984, she was a soil scientist with the USDA Soil Conservation Service where she mapped soils as part of the National Cooperative Soil Survey program in the Cascade Mountains of Oregon. Before that, she was a Soil Materials Engineering Technician with the U.S. Forest Service in Missoula, Montana. Laurel is the lead consultant in soil mapping and reconnaissance, soil profile descriptions, soil taxonomic classification, geomorphological investigations, and determination of hydric, alluvial, and colluvial soils. Her undergraduate education centered on Regional and Community Land Use Planning, and she has a B.S. in Resource Economics. Her graduate study focus was “Land Capability Analysis,” which lead to an M.S. in Resource Conservation from University of Montana School of Forestry. She has served on the Boards of Pennsylvania Association of Professional Soil Scientist (PAPSS) and Pennsylvania Septage Management Association (PSMA). She is a licensed Pennsylvania Sewage Enforcement Officer (SEO), a member of Soil Science Society of America (SSSA) and a national past president of National Society of Consulting Soil Scientists (NSCSS). Laurel volunteers as an EMT and Firefighter with Eldredsville Volunteer Fire Company.
Randy A. Rosbach, Designer, Cartographer, SEO
Randy is our on-site sewage system designer, GPS specialist, digital cartographer (AutoCAD), and soil science field technician. Randy manages “Mountain Wastewater Management,” our division for product sales and service. Randy has an A.A. degree in Computer Science from Pennsylvania College of Technology, and serves as our in-house computer expert. He is licensed as a Sewage Enforcement Officer, certified in “Operation and Maintenance” by National Association of Wastewater Transporters (NAWT), and is certified as a service provider by Jet, Norweco, Ecoflo (PremierTech), Puraflo (Bord Na Mona), Orenco AdvanTex, and American Manufacturing Company (Perc-Rite). He is a Pennsylvania Septage Management Association (PSMA) certified Wastewater Treatment Inspector. Randy volunteers as the Fire Chief of Forksville Volunteer Fire Company.
George W. Mueller, Project Manager, SEO

Robert Z. Bressler, Soil Scientist, SEO

David V. Linahan, P.E., Water & Wastewater Operator, SEO

1989, David joined Yerkes Associates, were he headed the Sanitary Engineering Group and was promoted to Senior Vice President. At Yerkes, he oversaw construction and start-up operations of Concord Township’s Central Sewer Project, designed Willistown Township Pressure Sewer systems, and designed the first community drip dispersal system in Pennsylvania. In 2008, David started his own firm, David V Linahan, PE LLC and co-authored “Alternative Sewer Systems” the WEF Manual of Practice No. FD-12. David is a member of the Pennsylvania Association of Sewage Enforcement Officers (PASEO) and the National Onsite Wastewater Recycling Association (NOWRA), serving as Ethics committee chairman of 2000-2002 and writing the NOWRA’s “Code of Ethics”. In 2002, David founded Pennsylvania Onsite Wastewater Recycling Association (POWRA), serving two terms as President.
Teresa Torluccio
