AESI Welcomes Chris Allen to our Mt. Vernon Office!

Chris is an Associate Hydrogeologist with over 20 years of experience on hydrogeologic and engineering geology/geotechnical related projects.  He has extensive knowledge and practical field experience related to well drilling, design, construction, development, and addressing well performance and efficiency problems.  His hydrogeologic experiences have included all types of municipal supply wells to depths over 1000 feet, dewatering wells, horizontal collector wells, pressure relief wells, geothermal extraction/diffusion wells and environmental injection and extraction wells constructed in sediment and bedrock. 


His work has taken him to numerous locations across the U.S. and beyond including British Columbia and Alberta, Canada and Berlin, Germany. 


I his free time you’ll typically find Chris outside working on various projects around his property, on adventures with his wife (Jeanne) and 9-year-old daughter (Paige), or chasing his Border Terrier (Ivan), cat (Zig-Zag), or chickens around.


AESI Welcomes Kenneth Jennings to our Kirkland Office!

Associated Earth Sciences, Inc. is excited to announce the hiring of Senior Geologist Kenneth Jennings, D. Env., L.G., C.P.G.

Ken is an environmental scientist with over 30 years’ experience in government (the US EPA Headquarters); industry (Amoco, Shell and Microsoft Corporations) and consulting. His expertise includes environmental investigations and cleanups, environmental compliance, sustainability, energy, and climate change.

He is an Adjunct Professor of Environmental Management for the University of Maryland University Center and is a member of the Advisory Council for the University of Washington’s Earth Lab. 

Ken earned a Bachelor of Sciences in geology and geophysics from Yale, a Masters in geology from the University of California Santa Barbara, and a Doctorate in environmental science and engineering from UCLA. He is married and has one daughter. In his free time Ken enjoys playing golf, traveling and writing.


Welcome to AESI Ken!

Mainstreet property group debuts new Development “The Bond,” in Redmond.

Mainstreet property group debuts new Development “The Bond,” in Redmond. AESI was the geotechnical engineer of record for the five story multifamily development in downtown Redmond. The project features 139 apartments with a two story community lounge area.

Tukwilla Village Phase II Development Underway

AESI is the geotechnical engineer of record for the new Tukwilla Village Phase II project. Tukwilla village will feature a 210 unit mixed-income senior living development providing affordable housing options to low-income seniors.


Lou Lepp Employee Excellence Award Winner: Jay Chennault

Jay Chennault is the recipient of the 2018 Lou Lepp Employee Excellence Award. Jay works out of our Mt. Vernon office in the hydrogeology group, specializing in groundwater and surfacewater monitoring. Jay has become a significant leader within the department and has been instrumental in acquiring multiple high-profile projects. A fantastic employee and overall great guy, Jay has continually gone above and beyond what is asked of him. Jay’s commitment to quality service, leadership, and excellence embodies the spirit of the Lou Lepp Award.

In 1981 AESI was founded by the late geologist, Lou Lepp. Lou’s vision was to integrate or associate the sciences of geology, hydrogeology and the environment with the form and structure of geotechnical engineering. Lou held the idea that quality staff was a fundamental part of a successful company. To honor his commitment to excellence, the Lou Lepp Employee Excellence Award allows us to recognize exceptional employees, who like Lou are an inspiration to employees as well as clients.

Join us in congratulating Jay, the latest Lou Lepp Employee Excellence Award recipient!

AESI Featured on DJC Cover Page

Associated Earth Sciences, Inc. was recently featured on the cover of the Daily Journal of Commerce as part of the BCRA lead team, working on the new West Woodland Business Center known as, Avenue 55Avenue 55, set to be built on the former Ness Cranes property in Ballard recently received a land use permit for the proposed four story light manufacturing building. The property located adjacent to Stoup Brewing, is set to open in the second quarter of next year. AESI provided geotechnical engineering for the project, looking forward to continue to be a part of the project team throughout the construction phase. 

Link to DJC Article

AESI Welcomes Carrie Mozingo to Our Kirkland Office!

Associated Earth Sciences, Inc. is excited to announce the hiring of Associate Engineering Geologist Carrie Mozingo in our Kirkland office. Carrie, a California native spent the last 20 years at Stoney-Miller Consultants, Inc. working on a wide range of geotechnical and geologic projects throughout California. In addition to her diverse geotechnical project experience, Carrie launched and managed Stoney-Miller’s San Jose office, spearheading marketing efforts that successfully established itself within the area.  Cary also has extensive experience as an expert witness, and has provided trial testimony on cases involving geologic and soils related damage.  When Carrie is not tackling geotechnical projects, she enjoys skiing, backpacking, fishing and standup paddle boarding.


Welcome to AESI Carrie!

Lou Lepp Employee Excellence award 2017

We would like to congratulate Tim Peter for being this year’s recipient of the Lou Lepp Employee Excellence award. The Lou Lepp Employee Excellence Award allows us to recognize exceptional employees, who like Lou are an inspiration to employees as well as clients.

Tim has been with AESI for 20 years, as a part of our geotechnical engineering staff. During that time, he has demonstrated a dedicated work ethic accompanied with a meticulous attention to detail and a positive attitude. In addition to Tim’s work as a geotechnical engineer, he has also developed a reputation throughout the industry as an expert in forensic evaluations of building foundation, retaining wall stability and drainage problems. Tim’s commitment to quality, timely and friendly service embodies the spirit of the Lou Lepp Award.

Congrats Tim!

AESI Will be Attending the Baker to Bay Symposium September 20-21

Senior Principal Hydrogeologist Chuck Lindsay and Associate Hydrogeologist Jay Chennault are each presenting at the Baker to Bay Symposium, a two-day event in Ferndale, Washington September 20-21.  The symposium, organized by the Whatcom Watersheds Information Network, is “intended to bring together stakeholders, managers, governments, businesses, community members, and scientists to share information about ecosystem recovery actions in Whatcom County”. Mr. Lindsay will be presenting September 20th on an ongoing streamflow augmentation pilot project in the Bertrand Creek watershed. Mr. Chennault will be presenting on the Nooksack River Instream Flow rule on September 21st. More information on the symposium can be found at:

AESI Assists Seattle Public Schools on the Award Winning Hazel Wolf K-8 School Project

AESI was proud to assist the Seattle Public Schools as the geotechnical engineer on the award winning Hazel Wolf K-8 school in North Seattle. Hazel Wolf won second place in the World Architecture News Future Projects Education Awards. The awards go to concepts, speculative designs, and projects that are on hold or under construction. The project focuses on environmental learning using aspects of the environment to teach STEM (Science, Technology, Engineering and Mathematics) subjects. The school can accommodate up to 680 students and is offered as a “choice school in which students opt to attend.” 

Water Supply Issues in Washington State - Associated Earth Sciences, Inc. attends the AWRA-Washington State Section Annual Conference October 26, 2016


AESI’s Jay Chennault, L.Hg., P.E. moderated Session 3 “Current Rural Domestic and Municipal Water Supply Tools and Programs” at the Washington State Section of the American Water Resources Association’s (AWRA-WA) annual state conference on October 26.  The conference theme this year was “Rural Domestic and Municipal Water Supply.”  AESI’s Chuck Lindsay, Sr. Principal Hydrogeologist and Jenny Saltonstall, Sr. Associate Hydrogeologist and AWRA-WA Board member were also in attendance.  The conference agenda spanned recent legal cases, water management challenges, status of rural domestic and municipal water programs, and discussed current water resources strategies.


AESI is currently working on numerous water right change/transfers for farmers and municipalities located in Skagit and Whatcom Counties.  These water right changes/transfers are critical to improve our client’s ability to more effectively use their rights and reduce impacts on surface water resources. In September, AESI completed the third phase of a four phase comprehensive hydrogeologic evaluation for Whatcom County, which has the primary goal of defining and characterizing the hydrogeologic stratigraphy of Whatcom County and southern British Columbia. Ultimately AESI’s work will form the basic structure for the development of a numerical ground water flow model of the project area.  AESI is also involved in a deep ground water exploration program for the Birch Bay Water & Sewer District.  The exploration program will include the installation and testing of at least three deep exploration wells in northwestern Whatcom County.


AESI is also working with the Upper Skagit Indian Tribe to find opportunities for artificial ground water recharge in Skagit County. Initially, AESI will complete a watershed-scale preliminary assessment of 39 tributary watersheds to the Skagit River.  The overall project goal is to restore or enhance in-stream flows and protect terrace floodplain habitats in key Skagit River tributaries in the summer and fall low-flow period. 

AESI's Principal Engineer, Matt Miller, was on the City of Tacoma Permeable Pavement Task Force.


The APWA-WA Construction Materials Committee special provisions developed over the last year are formally available on WSDOT’s Construction Office’s website.  During the 2015-2016 year, committee member efforts have resulted in the development of numerous industry leading specifications that have been approved for local agency use on FHWA funded projects. 
Specific specifications subject matter developed by the APWA-WA Construction Material Committee include; HMA - Material Transfer Device / Vehicle, Statistical or Non-statistical Evaluation , Definition of Sampling Lot and Sub-lot, Test Results, Test Methods, Price Adjustments for Quality of HMA Compaction, Subgrade Preparation for Porous Pavements, Asphalt Treated Permeable Base (ATPB), Porous Hot Mix Asphalt (PHMA), and Pervious Portland Cement Concrete (PPCC).  Possibly the most looked forward to of the new specifications are those developed to help support the L.I.D. construction techniques of PHMA and PPCC that have not been available until now.
Below you will find a link to the WSDOT website containing the APWA-WA Construction Material specifications in WSDOT GSP format the committee would encourage you to share with other public works personnel whom you believe might benefit from our committees work.  Over the coming months and as the newly developed specifications are incorporated into more projects, the committee is eager to be provided your feedback and if necessary identify any minor revisions that may be needed.

© 2015 Associated Earth Sciences, Inc.

Associated Earth Sciences, Inc. 2017