PFAS in New York State

Per- and Polyfluoroalkyl Substances (PFAS) are a group of man-made chemicals, including perfluorooctanesulfonic acid (PFOS) and perfluorooctanoic acid (PFOA), used in the production of a wide variety of consumer goods. PFAS have been commonly found in food packaging, household cleaning products, stain repellents, pesticides, and fire-retarding foam.

Impact of Spring Snowmelt on Erosion and Sediment Controls

Early spring offers unique challenges for maintaining the integrity of erosion and sediment controls on construction sites. During the winter, vegetation is dormant, the ground is frozen, and substantial snowpack is formed. When warmer temperatures and spring rain arrive, these conditions can have negative impacts on erosion and sediment controls if SWPPP measures are not properly implemented.

Laboratory Evaluation of Expansive Soil

Clay soil that expands beneath a structure after construction can cause upward heaving of slabs and footings, resulting in buckling of foundation walls due to excessive lateral forces on the walls. Identification of expansive soil during the design phase of a project is important, so that mitigation measures may be implemented during construction to prevent future slab and foundation distress.