Select Page

Welcome to the JJ&A Family!

Kate Gray, Environmental Compliance Specialist

Kate has over 13 years of experience specializing in environmental compliance strategies for complex projects throughout California. Her technical depth encompasses several renewable energy; transportation, including trails; water and wastewater infrastructure; communication infrastructure; restoration and remediation; and other multifaceted infrastructure projects. She manages projects and successfully assists her clients in navigating complicated environmental regulations.  Her environmental regulatory expertise includes Clean Water Act (CWA) Section 404, CWA Section 401, Rivers and Harbors Act Section 408, Fish and Game Code Section 1602 (Lake and Streambed Alteration Agreements), State and Federal Endangered Species Acts (CESA and FESA), National Historic Preservation Act Section 106, California State Lands Commission Lease Agreements, National Pollutant Discharge Elimination System (NPDES) permitting, California Environmental Quality Act (CEQA) and National Environmental Policy Act (NEPA), as well as City and County regulations. Kate’s technical expertise includes air quality and noise modeling and analyses, water quality monitoring, and impact assessments. She also has a strong background in geographic information systems (GIS) and has conducted spatially-based analyses for a wide range of projects.

Over the last several years, Kate has bridged her love for the outdoors with her professional career through recreation planning and multi-use trail development in the Sierra Nevada Mountains. She loves anything outdoors, but especially mountain biking, snowboarding, and skiing. Kate and her husband (and three-year-old son) own and operate a commercial bee business and manage over 175 hives.

Brett Lehman, PG, QSD/QSP, QISP
Project Manager

Brett has over 20 years of experience working on environmental remediation, permitting, and compliance projects in the Northwest. His professional background is with private industry, public service, and consulting. Brett’s technical expertise includes many types of drilling and remediation and installation of treatment systems. He is proficient in NPDES permitting, specifically in regards to stormwater, wastewater, drinking water, and aquatic pesticides application. While mining for sand, gravel, and hard rock, he was responsible for compliance with hazardous waste regulations, reclamation requirements, and MSHA/OSHA standards. In addition, he has experience with projects ranging from highway improvements, geotechnical exploration, demolition, and CERCLA Superfund remediation.

Raised in rural Eastern Oregon, Brett grew up enjoying outdoor recreation and strives to get out and find new life experiences to share with his wife and 6-year old daughter. He is an avid off-road and adventure motorcycle rider.

Shannon Wells, Associate Scientist

Shannon has over four years of experience working in environmental compliance and natural resource consulting. She specializes in projects related to sediment movement, soil physical and chemical properties, and grazing and agricultural practices. Her environmental regulatory expertise includes Fish and Game Code Section 1602 (CDFW Lake and Streambed Alteration Agreements), Clean Water Act Sections 404 and 401 (CWA), Army Corps of Engineers (ACOE) Wetland Delineations, California Coastal Development Permits, State Water Resource Control Boards General Order (SWRCB), California Environmental Quality Act (CEQA) and City and County regulations. Shannon’s expertise includes water quality monitoring and best management practices design, wetland delineations, road design, erosion control plans, septic testing and design, grazing plans, water rights, plant identification, geographic information systems (GIS), and AutoCAD.

Shannon has managed to use her skills abroad, assisting with reforestation efforts in the Tropical Dry Forest of Ecuador. When not at work, Shannon still manages to keep her hands and nose in the soil at all times and can be found digging in her homestead garden, preserving the harvest for future eating, or tending to her small flock of mixed backyard farm animals.

Addressing Elevated Salinity and Nitrate Problems
in the Central Valley

JJ&A’s presentation on CV-SALTS, addressed elevated salinity and nitrate problems in the Central Valley, and was well received by the California League of Food Producers.  JJ&A’s Terry James, Linda Mercurio, and Leon Gearhart provided an overview of salt and nitrate permitting approaches and challenges as well as a review of JJ&A projects relevant to this issue and how they can affect food producers.  JJ&A’s approach for achieving regulatory solutions for a food producer with nitrate impacts in their groundwater and the proactive mitigation for a municipality in the Central Valley with nitrate impacts in their municipal drinking water supply were highlighted.  And finally, because addressing salinity and nitrate issues can have a significant cost, funding opportunities through grants were discussed.  For more information about JJ&A CV-SALTS expertise and experience or JJ&A’s grant procurement and implementation services, please reach out to

Check out the presentation using the following link:  CV-SALTS Presentation.

Equality Statement

Welcome to the JJ&A Family!

Welcome to the JJ&A Family!Kate Gray, Environmental Compliance Specialist Kate has over 13 years of experience specializing in environmental compliance strategies for complex projects throughout California. Her technical depth encompasses several renewable energy;...

read more