G2 supports its clients performing development activities in Illinois by providing environmental consulting services, assisting clients with site characterization as required by the State of Illinois’ Clean Construction and Demolition Debris (CCDD) program. In Illinois, CCDD is defined as uncontaminated broken concrete without protruding metal bars, bricks, rock, stone, or reclaimed asphalt pavement generated from construction or demolition activities. When uncontaminated soil is mixed with any of these materials, the uncontaminated soil is also considered CCDD.
The State of Illinois created the CCDD program in part to preserve the capacity of its existing Subtitle D non-hazardous waste landfills by routing non-hazardous materials to former mines, pits, and quarries that are going through the process of being reclaimed. Disposing of spoils from developments at a CCDD facility provides developers with reduced costs associated with “tipping” fees at a CCDD facility versus a Subtitle D landfill, and there are significantly more CCDD facilities in Illinois than there are Subtitle D landfills, resulting in lower transportation costs as well.
The CCDD program puts significant front-end requirements on developers and CCDD operators to ensure that material is actually “clean” before it is placed within a CCDD facility, as these sites are not constructed with liners as required for Subtitle D landfills. This is where G2 can assist its clients in determining the most cost-effective manner in which they will be able to dispose of spoils generated during site development. There are essentially two routes to certify the material from a project site as clean. The first would be an “owner” certification, in which the owner of a property retains G2 to perform due diligence (typically a Phase I Environmental Site Assessment) to support that the site is not a “Potentially Impacted Property” as defined by the CCDD program. G2 then assists the client with completion of the required form (LPC-662) and can provide soil sampling to determine if the pH of the material is within the allowable limits (6.25-9.0).
It is G2’s experience that developers are more inclined to limit their liability and opt for certifying the soils as clean with the second option, which is an “Engineer” certification. G2’s licensed Professional Engineer oversees the project and supports the certification of the material as clean with a soil sampling and analysis program that is appropriate for a given site, as well as acceptable to the CCDD facility, which typically has it’s own environmental department with specific sampling and analytical requirements. G2 collaborates with the CCDD facilities (if known) to ensure that sampling is representative of where excavations have or will occur, at the appropriate depths, with the correct number of samples, and that the relevant chemical constituents are analyzed. Depending on what is known about the current and/or historical use of a property, If the analytical results warrant, G2 will complete the required form (LPC-663) to provide to the client, facilitating setup for disposal at their chosen CCDD facility.
With experience in environmental consulting within the Illinois CCDD program since its inception, G2 can assist clients with an appropriate sampling program to maximize their potential for certifying soils as clean and suitable for disposal at a CCDD facility, which provides significant savings to their projects. Characterizing soils from a project site early in the project timeline assures developers know what their soil disposal cost will be and can plan accordingly.