Call: 573-875-8799
660-376-2941
816-895-2310
3312 LeMone Industrial Blvd., Columbia, MO 65201
30601 Highway 5, Marceline, MO 64658
900 SW Oldham Pkwy #203, Lee’s Summit, MO 64081
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573-875-8799
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Aaron Jones
Professional Engineer
General Civil
Biography

Aaron Jones, PE, has more than 15 years of experience in civil engineering and has served as a Project Engineer for Allstate in the Lee’s Summit Office since 2014. Aaron is a licensed Professional Engineer in Missouri and Kansas. He started at Allstate as a part-time technician while obtaining a Bachelor of Science in Civil Engineering from the University of Missouri. During his tenure, Aaron was a part of several water, wastewater, commercial site development, residential site development, traffic,  and geotechnical projects.  He also served in the Missouri Army National Guard and was activated for Operation Armored Falcon and Hurricane Katrina.

In 2011, Aaron transitioned to the Missouri Department of Natural Resources, Kansas City Regional Office, in the Drinking Water section of the Engineering Unit.  During that time, he became a certified operator in water treatment and distribution and is competent in environmental regulations.

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Ben Tappmeyer
Engineer-In-Training
Structural
Biography

Ben Tappmeyer obtained his Bachelor of Science (Magna Cum Laude) in Civil Engineering from the University of Missouri-Columbia in 2013. He is currently pursuing a Master of Science in Civil Engineering with a structural emphasis from the University of Missouri-Columbia. His research focuses on retrofitting concrete slabs for blast mitigation.

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Bethany Hagemann
Engineer-in-Training
Structural
Biography

Bethany Haggemann obtained a Bachelor of Science in Civil Engineering with an emphasis in Structural Engineering from the University of Missouri-Columbia. She is responsible for the production of construction documents and construction administration. Specific duties include, but are not limited to, structural design, contract drawing production and specification preparation, as well as evaluating change orders, submittals, shop drawings, and special inspections reports. She developed a structural spreadsheet to determine wind loading pressures per ASCE 7-05 and ASCE 7-10 for low rise buildings, freestanding walls, and signs. From this spreadsheet, she worked with a programmer to develop a windows-based program to calculate the wind loading pressures.

Bethany is a volunteer for SAVE (Structural Assessment and Visual Evaluation).

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Betty Cobb
Administration
Receptionist/Reports
Biography

Betty came to Allstate Consultants in May of 2008. Her duties consist of greeting you when you come to our office, answering the phone, assisting with Accounts Payable and Receivables, and several other miscellaneous office jobs. She enjoys walking, scrapbooking and spending time with her family.

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Bill Barrow
Professional Engineer
Geotechnical
Biography

Bill Barrow, PE, RG, has over 35 years of experience in geotechnical engineering and hydrogeology and is a registered professional engineer and a registered geologist in the state of Missouri.  He has a BSCE and two years of graduate study in geotechnical engineering and is a Life Member of the American Society of Civil Engineers.  Professional experience includes geotechnical investigations for large commercial developments, highway bridges and interchanges, buildings, sports facilities, casinos, institutional facilities, industrial, manufacturing and food processing plants, water and wastewater plants, large pipelines, earth retaining structures, street, truck parking lot and airport pavements, communication towers, earth dams, dam and spillway modifications, agricultural waste disposal facilities, Subtitle D landfills, abandoned underground coal mines and land reclamation projects.

Bill is experienced in the geotechnical and construction observation aspects of shallow foundations, drilled shafts, auger cast and driven piles, vibro-stone columns, mats, anchors, retaining walls, sheet pile walls, earthwork, surcharged fills, earth dams, lagoon liners, landfill liners and covers, subsurface drainage, well point dewatering, cement grouting, geotechnical instrumentation, plate and pile load testing, soil stabilization using cement, lime, and fly-ash admixes and slurry injections, rock and mine grouting, and geotextile and geogrid reinforcement.

Bill has also been actively involved in forensic evaluations and remediation to control movements, damage, failures and construction difficulties involving expansive clays, compressible soils, slopes, and water bearing deposits.  He has had a career long interest in laboratory swell testing of expansive clays and triaxial compression, direct shear and hydraulic conductivity testing of soils and soft rocks in connection with earth dams, slopes, retaining walls and clay lining systems.

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Brent Elliott
Project Manager
General Civil
Biography

Brent Elliot earned a Bachelor of Science in Biological Engineering from the University of Missouri-Columbia and is working towards a Master of Science in Biological Engineering.  Brent’s Master’s research focuses on improving storm water quality in urban watersheds.  Brent joined Allstate in 2016 and works as a Project Manager, focusing on general civil projects with an emphasis in storm water.  His duties include site development plans as well as storm water facilities design including detention and water quality facilities analysis and design.

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Brian Harrington
Professional Engineer
General Civil
Biography

Brian Harrington obtained a Master of Science degree in Civil Engineering with an emphasis in transportation and a Bachelor of Science degree in Civil Engineering (Magna Cum Laude) from University of Missouri-Columbia. In 1993, he joined Allstate Consultants as a design technician and in 1995 became a Project Engineer, primarily working on general civil and transportation related projects. Brian is responsible for various design and engineering work including roadway design, roundabout design, traffic impact studies, traffic signal design, sanitary sewer design, storm sewer design and modeling, grading and erosion control design preparation of site plans for commercial, industrial and institutional projects.

Brian is licensed as a Professional Engineer in Arkansas, Kansas and Missouri and is also a licensed Professional Traffic Operations Engineer.

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Cass Mathews
Professional Engineer
Geotechnical
Biography

Cass Mathews, PE, has over 11 years of experience as a Civil Engineer, 9 of which are in the field of geotechnical engineering. He is currently ACI, nuclear safety and MODOT Grade I certified and is a registered professional engineer in the states of Missouri and Hawaii. His range of expertise includes geotechnical investigations and construction material testing for commercial developments, industrial facilities, water and wastewater facilities, sanitary and storm sewers, earth retaining structures, streets and airport pavement projects.

Cass has experience in civil design, surveying and geotechnical design and construction as well as observation and testing for shallow foundations, retaining walls, earth dams, lagoon liners, and concrete. He is also responsible for field exploration, lab test data reduction, soil and rock sample classification, boring log preparation and is competent in a wide range of geotechnical laboratory tests. His diverse experience in the field of Civil Engineering has allowed him to become intimately familiar with a variety of codes and standards.

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Chad Ellicott
Technician
Geotechnical Lab
Biography

Chad Ellicott has worked as Chief Laboratory Soil Technician for Allstate Consultants since May of 2003. He is responsible for laboratory soils and concrete testing.  He is proficient in performing a wide range of soil tests including water content, density, unconfined compressive strength, Atterberg limits, grain size analyses, swell, consolidation, standard Proctor and CBR testing.  Chad also performs hydraulic conductivity testing with flexible wall permeameters and consolidated undrained triaxial compression testing with pore pressure measurements. He also served as a survey crew member for Allstate from 1986 until 2003.

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Chad Sayre
Professional Engineer
General Civil
Biography

Chad Sayre obtained a Master of Science and a Bachelor of Science in Civil Engineering from University of Missouri-Columbia. Since 1994, Chad has been a Project Engineer for Allstate Consultants. In 2000, he became Principal/Vice President and Chief of Design Services for the firm. He is responsible for municipal and land development engineering projects including forensic, water, wastewater, land planning, environmental compliance permitting, highway design, hydraulics, and stormwater projects. Chad is closely involved with construction administration, inspection, specification preparation of public and private projects and has a considerable amount of experience in expert testimony.

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Darin Underwood
Investigator
Forensic
Biography

Darin Underwood is Case Manager of Forensic and Investigative Engineering for Allstate Consultants.  Darin is a certified fire investigator, certified fire inspector, certified fire and explosion investigator and certified residential roof inspector.  Darin works directly with insurance companies, individuals, municipalities, and attorneys to investigate fire origin and cause, indoor air quality, structural analysis, equipment and appliance malfunction, and storm related damages from hail, lighting, and wind.

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Dave Weber
Professional Engineer
Structural/Forensic
Biography

Dave Weber obtained a Master of Science and Bachelor of Science (Cum Laude) in Civil Engineering from University of Missouri-Columbia. Since 1997, Dave has been a Project Engineer for Allstate Consultants. In 2000, he became Principal/Secretary-Treasurer and Chief of Structural Services for the firm. He is responsible for various types of design work, including forensic and structural engineering. He is involved in construction administration, inspection, specification preparation of structural projects and has completed a considerable amount of expert testimony in the area of building science, structure failures, and forensic engineering.

Dave is a licensed Professional Engineer in Missouri and numerous other states as well as a licensed Structural Engineer in the state of Illinois including a current Model Law Structural Engineer record with NCEES. He is also a Structural Specialist for the FEMA Urban Search and Rescue (US&R) response system and a rostered member of the Missouri Task Force One, serving as a structures specialist (since 1998), with fourteen deployments including the World Trade Center Disaster in 2001, the Clinton, Missouri Building Collapse in 2006, and the Joplin, Missouri E-5 Tornado in 2011. He is also a rostered member of the FEMA US&R White Incident Support Team (IST) which responded to the Hurricane Katrina disaster in 2005, Hurricane Sandy in 2012, and the Colorado flooding in 2013. Dave has been a Missouri SEMA Structural Assessment and Visual Evaluation (SAVE) Coalition volunteer since 2003 and a board member as a representative of the Structural Engineers Association of Kansas and Missouri (SEAKM). He has been the board chairman of SAVE since 2006.

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David Peavler
Technician
ACAD/Drafting
Biography

David Peavler earned his Associate’s Degree in Construction Engineering Technology from Missouri Western State College in 1997. He has worked as a Design Tech and CAD Manager for Allstate Consultants since 1999.  His duties include design and developing plans for various residential, commercial, & industrial sites, water treatment and wastewater treatment facilities.  David also coordinates the drafting schedule with project engineers and assists other design technicians within the firm.

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Don Osborn
Technician
Lab and Field
Biography

Don joined the Allstate team in 2005 and works as a Construction Observer and Testing Technician.  His duties include observation and testing of compacted fills and subgrades as well as concrete, asphalt, masonry, and other materials being used in the construction process.  Don also assists Allstate’s drill crew in performing test borings for subsurface explorations.

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Donald Fischer
Professional Land Surveyor
Land Surveys/Field Observation
Biography

Donald Fischer obtained a Bachelor of Science degree in Drafting Technology from Central Missouri State University.  He is a licensed surveyor in the State of Missouri, holds an ACI Concrete Field Testing Technician – Grade I certification and is CPN Certified in Radiation Safety and as Operator of Nuclear Moisture/Density Gauge.  In 2000, Donald became a Principal and Construction Manager for the firm.  His duties include the management of geotechnical construction testing and observation of the placement of soils, concrete, asphalt and other materials being used in the construction process.  He is also involved in subgrade stabilization of soils for pavement, water, sewer and storm sewer construction, inspection of utility construction adjacent to and through dams of lakes, subgrade repair and inspection, and concrete inspection.

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James Sneller
Technician
ACAD/Drafting
Biography

A.S. Drafting Technology – 1998
Lincoln University, Jefferson City, Missouri
B.S. Civil Engineering Technology – 1999
Lincoln University, Jefferson City, Missouri

Design Tech for Allstate Consultants, Columbia, Missouri. Duties include drafting and designing for various residential, commercial, & industrial sites, water treatment and wastewater treatment facilities, drafting for boundary surveys, topographic surveys, ALTA surveys, and final/minor/administrative plats.

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Jamie Jeffries
Professional Land Surveyor
Land Surveys
Biography

Jamie Jeffries has been a Registered Professional Land Surveyor in Missouri since 1993 and also has held his surveyor’s registration in Kansas since 2011.  He has held the position of Staff Surveyor for Allstate Consultants since 2001 but has been a Surveyor/Party Chief with the firm since 1992. His duties include office calculations for plats, legal descriptions, surveys and construction stakeout, estimates, deed and survey research for upcoming projects. He is responsible for project management, making sure deadlines are met and assisting others to see that projects are completed on schedule.

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Jennifer Presberry
Client & Resource Specialist
Business Development/Special Projects
Biography

Jennifer Presberry earned a Master and Bachelor of Arts in Geography from the University of Missouri – Columbia. Jennifer is responsible for business development and marketing opportunities for Allstate as well as consulting on a variety of projects to help communities leverage resources and determine the economic impact of projects. With more than a decade of economic development experience, Jennifer considers every project an opportunity to improve quality of life and the business climate. She has built relationships across the region with community and economic developers, utility representatives, and public and private representatives to benefit her clients and communities.

In addition to designing strategic initiatives, Jennifer works with public and private entities to submit applications for funding from local, state and federal agencies.

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Joe Hassien
Technician
Field Observation
Biography

Joe Hassien earned his Bachelor of Arts in Environmental Science in 2011 from Westminster College. He has worked as Construction Manager / Construction Inspector for Allstate Consultants since October of 2013. His duties include preparation of construction drawings and specifications for various engineering projects including:  water distribution systems and sanitary sewer collection systems.  He has performed as construction observer/administrator for various construction projects including pump stations, deep well drilling, sanitary sewer and water distribution and treatment systems, and building construction.  He has also performed as survey crew member on various topographical, boundary, and construction surveys.

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John Holmes
Professional Engineer
LEED, Permitting, Hydraulics
Biography

John Holmes obtained a Master of Science and Bachelor of Science (Magna Cum Laude) in Civil Engineering from University of Missouri-Columbia and is a Certified Floodplain Manager, Certified Professional in Erosion and Sediment Control and is LEED AP Certified. John has 15 years experience in the areas of Transportation Engineering and storm drainage including roadway design, preliminary bridge design, project management on roadway and bridge replacement projects, storm water quality BMP design and hydraulic and hydrologic modeling. His work experience includes 11 years working at MoDOT in various capacities including Project Manager for roadway projects and statewide resource with expertise in storm water issues. John’s capabilities include hydrologic and hydraulic modeling and design, bridge hydraulics, storm water quality and quantity management, erosion and scour control, stream stabilization, LEED Accredited site design, roadway design and project management.

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Karen Sayre
Office Manager
Financial Coordinator
Biography

Karen joined the Allstate team in 2015. She graduated from Northeast Missouri State University (now Truman State University) and previously worked at the University of Missouri for 12 years before taking time off to be a stay at home mom.  Now at Allstate, her duties include payroll, finance management, human resources, and various administrative tasks. Karen’s hobbies include attending Mizzou sporting events, watching St. Louis Cardinals baseball games, gardening, and spending time with her family.

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Michael Ash
Professional Engineer
Structural
Biography

Michael Ash obtained his Master of Science in Civil Engineering, a Bachelor of Science in Agricultural Engineering, and a Bachelor of Science in Civil Engineering with Honors from the University of Missouri-Columbia. Michael has been a project engineer for Allstate since 2003 and is a licensed professional engineer in the State of Missouri.

Michael is responsible for engineering and managing structural engineering projects which include producing construction documents, providing condition assessments, evaluating existing structures and construction administration. Specific duties include, but are not limited to, structural design, contract drawing production, and specification preparation. He is also involved with evaluating change orders, submittals, shop drawings, and special inspection reports.

Michael is volunteer for SAVE (Structural Assessment and Visual Evaluation) as well as a member of AISC (American Institute of Steel Construction), Tau Beta Pi (National Engineer Honor Society), and Chi Epsilon (Civil Engineering Honor Society).

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Ron Shy
Professional Engineer
General Civil
Biography

Ron Shy obtained a Master of Science in Construction Management and a Bachelor of Science in Civil Engineering from University of Missouri-Columbia.  Since 1975, Ron has been owner/principal of Allstate Consultants, and has project experience in many types of civil projects across the State of Missouri.  In addition to managing the staff of 36 employees, he is directly involved with client responsibilities and project management.  Ron’s diverse experience includes private and public infrastructure projects, feasibility studies, annexation and rezoning issues, public presentations, preparation of engineering plans and specifications, bidding and contractual processes and construction management.

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Stephen Lin
Professional Engineer
General Civil
Biography

Stephen Lin obtained a Bachelor of Science in Civil Engineering from the University of Missouri – Columbia and has worked as a Project Engineer with Allstate Consultants since May 2000.  Stephen is responsible for various design and engineering work involving drinking water and wastewater projects (includes treatment plants, well facilities, pumping stations, distribution and collection systems, water storage facilities, hydraulics, onsite wastewater treatment systems, and permitting), street and storm water projects, structural projects, and site planning and development.   His duties include preparing engineering reports, assistance with funding procurement, plans and specifications; construction engineering, administration, and observation; client and contractor relationships; and assisting in construction materials testing including field and lab service.

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Stuart Liegey
Resource Development Strategist
Special Projects
Biography

Stuart Liegey earned his Master of Divinity, Master of Religious Education, Master of Arts, and Bachelor of Science from Cincinnati (OH) Christian University.  His primary role is to be a liaison between faith-based organizations, engineers, construction managers, consultants, and lenders to deliver quality facilities that are effective and efficient for ministry, as well as financially feasible.

With more than 30 years of experience in various realms of ministry, Stuart capably guides clients through their project needs, keeping in mind how they can maximize their opportunities to serve the community.  His focused approach and communication skills have helped a number of Midwest communities as Stuart has developed and implemented Leadership Training programs, guided renovation and land acquisition projects, presented workshops at statewide conventions, directed a college internship program, and coached a variety of youth ball teams.

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Wes Bolton
Professional Engineer
General Civil
Biography

Wes Bolton obtained a Bachelor of Science and Master of Science in Civil Engineering from University of Missouri-Columbia. Wes has worked as a Project Engineer with Allstate since 2003 and is responsible for a diverse range of design and engineering work, including street and intersection design (conventional as well as single and multi-lane roundabouts), traffic impact studies, access justification reports, traffic flow modeling (utilizing VISSIM and Synchro), site layout and grading (commercial and residential), utility design (storm sewer, sanitary sewer, water), and detention and water quality systems design. In January 2009, Wes became an accredited Crash Reconstructionist/Accident Investigator. His responsibilities with this accreditation include investigation/reconstruction of motor vehicle crashes and bodily injury cases.

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