Remedial Design
Soil Vapor Intrusion Solutions –  Sub-Slab Depressurization System

Soil Vapor Intrusion Solutions – Sub-Slab Depressurization System

How to Address Soil Vapor Intrusion Discussed in a previous blog (link at the bottom of the page), subsurface contamination can find its way into habitable buildings via minor breaches in a building’s foundation and/or flooring.  Source area removal, or direct removal...

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Groundwater 101: Monitoring Well Installation

Groundwater 101: Monitoring Well Installation

Groundwater Monitoring Well Installation Basics Groundwater monitoring wells are commonly installed at sites that are known to be or suspected to be contaminated by a variety of substances such as petroleum compounds or chlorinated solvents. Groundwater Quality...

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New York State Takes Control of Establishing 1,4-Dioxane And PFOA Drinking Water Standards

New York State Takes Control of Establishing 1,4-Dioxane And PFOA Drinking Water Standards

The presence of 1,4-dioxane in drinking water has been an on-going concern for many residents of Long Island, New York. 1,4-dioxane is a compound that has been used in a variety of industrial, manufacturing and agricultural operations. It readily mixes with water, and...

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Understanding Tax Credits in the New York State Brownfield Cleanup Program

Understanding Tax Credits in the New York State Brownfield Cleanup Program

The New York State Brownfield Cleanup Program (NYSBCP) began as a means to encourage the cleanup and redevelopment of privately owned sites across the state in an effort to promote the revitalization of economically and environmentally blighted areas. Brownfield tax...

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New York State Grants Available for Clean Water and Drinking Water Infrastructure Improvement Projects

New York State Grants Available for Clean Water and Drinking Water Infrastructure Improvement Projects

As municipalities across the country are assessing and investing in improvements to aging water treatment and supply systems, New York State recently passed the Clean Water Infrastructure Act of 2017, allocating at least $1 billion in funding to water infrastructure...

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Do You Know How to Dispose of Hazardous Waste?

Do You Know How to Dispose of Hazardous Waste?

In February a New York business and one employee were convicted for violating the New York State Environmental Conservation Law (ECL). The business and employee illegally disposed of hazardous materials and waste at their facility. Both the employee and facility were...

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The Origins of 1,4-Dioxane: How Did It Get Into Long Island’s Drinking Water?

The Origins of 1,4-Dioxane: How Did It Get Into Long Island’s Drinking Water?

Long Island’s groundwater has recently been reported to contain elevated levels of 1,4-dioxane. As discussed in Walden’s recent blog, “How will the 1,4-Dioxane in my Drinking Water Affect my Health?", 1,4-dioxane, a probable cancer causing chemical, has been detected...

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