Gowanus Village I, LLC (GVI) entered into the New York State Brownfield Cleanup Program (BCP) with the New York State Department of Environmental Conservation (NYSDEC) as a volunteer, to investigate and, where necessary, remediate contaminated soil encountered during development of the site. As part of this endeavor, BSI developed a Supplemental Remedial Investigation Work Plan (SRIWP), at the request of the NYSDEC, in order to understand the extent of contamination at the site. As part of the SRIWP, BSI oversaw site clearing activities, conducted soil sampling, well installation, groundwater sampling and soil vapor sampling. Upon completion of these exercises, BSI prepared and submitted to the NYSDEC, a Final Remedial Investigation Work Plan (RIWP). Further, BSI prepared a Remedial Action Work Plan (RAWP), based on the findings of the RIWP. The RAWP provided the client with a tailor-made level of due diligence, which allowed the client to sell the site for development.