Geology & Hydrogeology

Ms. Bonnie Lampley:  R.G., C.H.G., C.F.O., is President of Lawrence and Associates and Principal Hydrogeologist, responsible for corporate financial oversight, and management of all ground- and surface-water projects, statistical and water-chemistry applications, and technical review of all reports.

Ms. Lampley is a:
• California Registered Geologist (R.G. 6541)
• Certified Hydrogeologist (H.G. 626)

Ms. Lampley is the head of our ground-water group and is an authority on local and basin-wide hydrologic analyses throughout northern California.  She is responsible for implementing Article 5 reports and statistical analysis of water-quality data. She has prepared Closure Plans, Reports of Disposal Site Information, and Reports of Station Information, and other required documentation for obtaining solid-waste facility permits. She is also responsible for analysis of air-quality data, and has prepared health-risk assessments in accordance with state regulations.

Mr. David Kirk is a Principal Geologist, responsible for environmental and underground storage tank sites, and managing periodic sampling work for our clients.

Mr. Kirk is a:
• California Registered Geologist (R.G. 6673)

Mr. Kirk has experience in over 100 underground storage and spill-related sites.

Engineering Geology

Mr. Clayton Coles is the General Manager and Principal Engineering Geologist, responsible for technical management and oversight of all engineering, geotechnical, environmental, and construction-management projects.  Mr. Coles is a:
• California Registered Geologist (R.G. 5007)
• Certified Engineering Geologist (C.E.G. 1730)
• Oregon Certified Engineering Geologist (E.G. 1360)
• Certified Professional Soil Erosion and Sediment Control Specialist (No. 826)

Mr. Coles has over 15 years of experience in landfill design, permitting, construction management and operation of new waste management unites, liners, covers, monitoring networks, and landfill-gas monitoring and control systems.

Mr. Coles also manages investigations and remediations of underground-tank sites and other contaminated sites. Mr. Coles has managed or performed project work on virtually every Lawrence & Associates project of this type in the past 17 years.

Mr. Bryan Gartner is a Principal Geologist, responsible for environmental site assessments, including property assessments and underground storage tank sites, and landfill permitting.  He has experience with environmental documentation and permitting both existing and new landfills.

Mr. Gartner is a:
• California Registered Geologist (R.G. 5634)

• Certified Engineering Geologist (C.E.G. 1756)

• Certified Hydrogeologist, (H.G. 57)

• Oregon Certified Engineering Geologist (E.G. 1431)

• California Registered Environmental Site Assessor (R.E.A 1879). 

Mr. Gartner performs underground-tank and other contaminated-site investigations, designs groundwater monitoring systems, prepares Storm Water Pollution Prevention Plans, landfill closure plans, groundwater evaluations, and other documents relating to environmental compliance.

Civil Engineering

Mr. David Hochmuth is a Senior Civil Engineer responsible for engineering aspects of all Lawrence & Associates projects.  Mr. Hochmuth is a:

• California Registered Civil Engineer No. 41375
• Colorado Engineer No. PE 22631

Mr. Hochmuth joined Lawrence & Associates after 20 years with Harding/Mactec (formerly Harding Lawson Associates) and other firms.  Mr. Hochmuth\'s expertise includes Storm Water Pollution Prevention planning, NPDES permitting, grading and site development planning, water budget and water rights determination, and Spill Control, Containment, & Countermeasures Plans.    He has extensive experience in remediation system design using vapor extraction, air sparging, air stripping, carbon adsorption, UV-ozone oxidation, biological degradation, and other techniques.  Mr. Hochmuth possesses certification from the Natural Gas Vehicle Institute for Compressed Natural Gas Fueling System Design and Operation.  He has developed fueling-facility designs for truck stops, service stations, and compressed natural gas facilities throughout northern California.

CAD Services

Mr. David Zaitz is the head of our computer-aided drafting (CAD) and surveying department. Mr. Zaitz has over 10 years experience in surveying, and excels in AutoCAD, including DCA and Earthworks modules.

Drilling Services 

Mr. Dan Jensen, C57-539447, is the manger of drilling services, responsible for estimating and scheduling drilling, well installation, treatment-system installation, groundwater sampling, and other technical services.