Earlier in 2019, Advanced Land & Water joined the Barton & Loguidice team. Together, these two entities provide geoscience and environmental consulting expertise to address complex water supply, wastewater discharge, and contamination challenges across the Mid-Atlantic & Northeast Region.

“This opportunity allows for the team to continue to experience professional growth and explore new work opportunities, as well as provide our clientele with even more resources to service their needs. Joining the B&L team was a natural fit for us.”

Mark W. Eisner, P.G.


Quality Service
& People

Our staff possess extensive regional experience in water supply and wastewater disposal. Our water supply experience extends to both groundwater and surface water with respect to both new and existing supplies. Many of our largest projects and strongest client-service relationships have arisen in support of land development projects, county utilities and other public agencies throughout the entire Mid-Atlantic region.


Mark W. Eisner, P.G.

Former Advanced Land and Water President, Mark serves as Branch Manager of B&L’s new Baltimore Metro office and possesses more than 25 years’ experience in environmental and hydrogeological consulting.


Amy M. Parrish, EHS, P.G.

Licensed Environmental Health Specialist and Professional Geologist with over 17 years of experience performing and managing water and wastewater resources evaluations.


David L. Pielmeier

Former Operations Manager & Senior Scientist with Advanced Land and Water, joins the B&L team as a Managing Hydrogeologist. David possesses over 17 years of water resource evaluation and permitting experience.

Baltimore Metro

Phone: (410) 795-4626

Address: 1912 Liberty Road, Suite 26, Eldersburg, MD 21784