Engineering Geology
Mr. Clayton Coles: Professional Geologist and Certified Engineering Geologist. Mr. Coles is the General Manager of Lawrence & Associates and Principal Engineering Geologist, responsible for technical management and oversight of all engineering, geotechnical, environmental, and construction-management projects.
Mr. Coles is a:
- California Professional Geologist (P.G. 5007)
- Certified Engineering Geologist (C.E.G. 1730)
- Certified Professional Soil Erosion and Sediment Control Specialist (No. 826)
- QSD No. 198
Mr. Coles has over 25 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 investigation and remediation 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: Professional Geologist, Certified Engineering Geologist, and Certified Hydrogeologist. Mr. Gartner is Vice-President of Lawrence & Associates and is 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 Professional Geologist (P.G. 5634)
- Certified Engineering Geologist (C.E.G. 1756)
- Certified Hydrogeologist (H.G. 57)
- Oregon Certified Engineering Geologist (E.G. 1431)
- QSD/QSP No. 21966
- QISP No. PG 5634
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.
Mr. Karl Swanson: Professional Geologist. Mr. Swanson is responsible for designing and overseeing landfill design, permitting, and construction management, including installation and operational management of new waste management units, liners, covers, monitoring networks, and landfill-gas monitoring and control systems.
Mr. Swanson is a:
- California Professional Geologist (P.G. 8969)
- QISP No. PG 8969
Mr. Swanson performs contaminated-site investigations, designs groundwater monitoring systems, prepares landfill closure plans and post-closure plans, groundwater evaluations, and other documents relating to environmental compliance.
Civil Engineering
Mr. Darren Langfield
Mr. Langfield is a California Registered Professional Engineer responsible for the civil engineering aspects of Lawrence and Associates’ projects.
Mr. Langfield holds the following licenses/certificates:
- California Professional Engineer
- Oregon Professional Engineer
- Idaho Professional Engineer
- CA Water Treatment Operator, Grade T2
- CA Water Distribution Operator, Grade D2
Mr. Langfield joined Lawrence and Associates in 2021, after nearly three decades of experience with Public Works Departments in Shasta County, California. He brings focus and support to the design and construction of municipal infrastructure projects, such as water, sewer, storm drains, streets, parks, and trails. Mr. Langfield is experienced in CEQA, utility requirements and development standards associated with municipal and commercial projects, and the California Subdivision Map Act. His background provides a wide range and depth of knowledge across the public works and land development sectors.
Geology & Hydrogeology
Ms. Bonnie Lampley: Professional Geologist, Certified Hydrogeologist, and Chief Financial Officer. Ms. Lampley is President of Lawrence & 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 Professional Geologist (P.G. 6541)
- Certified Hydrogeologist (H.G. 626)
Ms. Lampley is the head of our groundwater 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.
Mr. David Kirk: Professional Geologist. Mr. Kirk is Vice-President of Lawrence & Associates and is responsible for environmental site evaluations, underground storage tank sites, and managing periodic sampling work for our clients.
Mr. Kirk is a:
- California Professional Geologist (P.G. 6673)
- Oregon Registered Geologist, (G1833)
- QSD/QSP and QISP No. PG 6673
Mr. Kirk has experience in over 100 underground storage and hazardous material spill-related sites. Mr. Kirk is proficient in processing well installation applications and coordination of drilling services for monitoring wells and community drinking water wells. Mr. Kirk has extensive experience in hard-rock geology and mining mineral assessments.
Drilling Services
Mr. Dan Jensen is the manager of drilling services. Mr. Jensen is a Principal, responsible for estimating and scheduling drilling, well installation, treatment-system installation, groundwater sampling, and other technical services.
L&A is licensed well driller in California, C57-539447, and a licensed monitoring well constructor in Oregon, No. 10405.
CAD Services
Mr. David Zaitz is the head of our computer-aided drafting (CAD) and surveying department. Mr. Zaitz has over 25 years of experience in surveying, and excels in AutoCAD, including DCA and Earthworks modules.