Climate Change Impact Assessment for Sustainable Land, Water and Soil Management in Somaliland

Stone is carrying out a climate change impact assessment to identify current and future hydro-meteorological boundary conditions critical to develop and implement a sustainable land use plan in Somaliland.

Brownfield Redevelopment at 55 Main Street, Wells River, Vermont

Little Rivers Health Care, Inc (LRHC), a not-for-profit, community-based, health center contracted Stone in 2020 to perform a Phase I ESA prior to purchasing a former gasoline and automotive service station in Wells River. LRHC intends to redevelop the property as a dental clinic.

Simulation of Pesticide and Metabolite Concentrations Using SWAT+ Landscape Routing and Conditional Management Applications

The estimation of pesticide concentrations in suraface water bodies with models is a critical component of the environmental and human health risk assessment process. The most recent version of the Soil and Water Assessment Tool (SWAT+) provides new features that are useful for pesticide exposure assessments.

Indoor air testing, innovative PCB removal technologies, and upcoming events

Stone Environmental shares updates on recent work and previews of forthcoming projects.

Guidance Document for Applying the Pesticide Root Zone Model (PRZM) in Screening Level PFAS Leaching Assessments

This document provides guidance on how to use the Pesticide Root Zone Model (PRZM) as a screening-level tool to assess the potential for per- and polyfluoroalkyl substances (PFAS) to leach into groundwater from land applied residuals, including industrial solids and municipal wastewater biosolids.

Killington Resort Area Initial Site Investigation for Per & Polyfluoroalkyl Substances in Drinking Water and Surface Water

Act 21 regulates per- & polyfluoroalkyl substances (PFAS) in public drinking water systems in Vermont as passed in 2019. In the Killington Resort Area, Vermont, several public drinking water systems served by bedrock wells have PFAS detections above the maximum contaminant level (MCL). The public transient non-community (TNC) water systems include Killington Mountain School, Killington Village Inn, and Chalet Killington. In response to the PFAS exceedances in public drinking water, Stone performed an initial site investigation of the Killington Resort Area.

Per- & Polyfluoroalkyl Substances Assessment at Biosolid Land Application Sites, St. Johnsbury

The Town of St. Johnsbury has several permitted land application sites to accept biosolids from their wastewater treatment facility. In 2020, Stone performed PFAS assessments at three land application sites including sites in North Danville, Lyndonville, and Barnet.  

Planning, Design, and Implementation of a Decentralized Wastewater Management System in Warren, Vermont

Combining Neighborhood-Scale Green Infrastructure with "Gray" Infrastructure to Reduce Combined Sewer Overflow Events

Evaluating the Impacts of Subsurface Agricultural Tile Drainage Systems to Water Quality in Vermont