First written by the American Society for Testing and Materials (ASTM) and approved by the Environmental Protection Agency (EPA) in 1993, ASTM e1527, better known as the Standard Practice for Phase I Environmental Site Assessment Process, is due for an update in 2021. The standard was last updated in 2013 and is updated every 8… Read More

Understanding the Risks and Rewards of Developing a Brownfield Site Savvy developers should know that due diligence is the critical piece of the puzzle in deciding if the risks outweigh the rewards when considering the purchase of a Brownfield site. Retaining a knowledgeable environmental consultant can arm developers with the information they need to make… Read More

Since October 1, 2019, the New York City Fire Department’s Rule 3 RCNY 608-01, entitled “Outdoor Stationary Storage Battery Systems” has been in effect and applied to projects throughout NYC. FDNY Rule 3 RCNY 608-01 applies to the installation and utilization of Outdoor Stationary Storage Battery systems which use new energy storage technologies such as… Read More

New York State’s new process for large-scale renewables siting and permitting, the Section 94-c process, has finally been issued by the Office of Renewable Energy Siting (ORES) and became effective on March 3, 2021. The draft regulations were issued on September 16, 2020 and were open to public comment until December 7, 2020. The State… Read More

Despite the challenges and uncertainty that 2020 brought to many industries and businesses across the country, Walden’s staff members were hard at work developing their skills and furthering their knowledge.  Walden is committed to professional development, with the ultimate goal of broadening the services we provide to the firm’s clients. Two of Walden’s environmental scientists,… Read More

Walden Environmental Engineering, in partnership with Harkin Aerial, has completed a recent project funded by the Nassau County Soil and Water Conservation District to improve the waterways of Nassau County through their 2020 grant and assistance programs. In January 2021, members of the project team, including Walden, Harkin Aerial, and the Cornell Cooperative Extension of… Read More

Recent developments in drone thermal imaging have proven to be especially effective at identifying water quality issues. Walden and Harkin have undertaken multiple case studies which show, under proper conditions, that many illicit discharges (sources of potential pollution) produce a measurable change in temperature that can be seen with a thermal drone. By flying in… Read More

Will It Affect You? The New York State Department of Environmental Conservation (NYSDEC) recently published its 2021 Regulatory Agenda to the State register. Walden has reviewed and summarized the proposed regulatory updates, so you don’t have to. In total, NYSDEC is proposing to amend or adopt over 90 different regulations spread across 12 different offices… Read More

Facilities that are classified as “major facilities” per 6 NYCRR 201-2.1 (Subpart 201-2) are subject to Title V permit requirements. Under 6 NYCRR 202-2 (Subpart 202-2), all facilities must provide an annual emissions statement, which is a quantitative summary of air contaminants emitted. Some examples of characteristics that require facilities to acquire a Title V… Read More

Why have drones increased in demand and usage in such a short timespan? The reasons are many, but in this guide, we’ll focus on a specific use case: How Walden Environmental Engineering and Harkin Aerial have developed ways to use drones to improve water quality, map water infrastructure, and detect/locate issues in drinking water and… Read More