Hydro Tech Environmental was presented with the opportunity to perform remedial activities during the development of a New York City “E” designated Site. The property is located in the heart of Sheepshead Bay, Brooklyn that existed as a former gasoline station with petroleum-contaminated soil and groundwater associated with New York State Department of Environmental Conservation (NYSDEC) Spill #8503707. The property owner was interested in developing the Site into a residential building with a community facility. Hydro Tech Environmental identified this as an opportunity for the NYSDEC Brownfield Cleanup Program (BCP) and worked with the developer to apply to the program as a volunteer. Hydro Tech expedited the BCP Application process by submitting a Remedial Investigation Work Plan and a Remedial Action Work Plan (RAWP) with a Track 1 Cleanup Goal along with the application. Once the site was accepted into the program, Hydro Tech performed the remediation of soil, groundwater, and vapors during development. Throughout remediation, Hydro Tech never wavered from the initial goal of achieving Track 1 Cleanup. Using an innovative, affordable remedial design, Hydro Tech was able to stay within budget, meet Track 1 Cleanup Goals and complete remediation within two (2) years of NYSDEC RAWP Approval. As a result of the Track 1 achievement, the environmental quality of the Site has been restored to levels that are protective of public health and the environment while maintaining compliance with the BCP standards. Because of the Track 1 cleanup status, the developer qualifies for generous Tax Credits without the need of an environmental easement or site management plan. In the end Hydro Tech was able to convert a standard New York City E designated site that contained open NYSDEC Spill numbers into a profitable Brownfield Cleanup property.

Hydro Tech Environmental, Corp. has supervised and documented the environmental closure activities for a property in Queens, New York. The property was associated with a New York State Department of Environmental Conservation (NYSDEC) Spill number and was also associated with an “E”-designation. Hydro Tech performed the remedial activities under the guidance of both the New York City Department of Environmental Protection (NYCDEP)/NYC Office of Environmental Remediation (OER) and the NYSDEC. The remedial activities at the property commenced in May 1999. A NYSDEC Spill number was issued to the property after contaminated soil was identified during the excavation and removal of thirteen (13) 550-gallon underground storage tanks (USTs) by others. Over 100 tons of contaminated soil was removed from the property. However, in April 2007, Hydro Tech performed a Phase I ESA and discovered that the NYSDEC Spill number issued in 1999 had not been closed. In addition, Hydro Tech determined that an “E”-designation was associated with the property. Subsequently, Hydro Tech performed a Subsurface Investigation and identified residual contaminated soil in the vicinity of the historical USTs. An addition 150 tons of contaminated soil was removed from the property, endpoint samples were obtained in accordance with draft DER-10, and the results indicated that all contaminated soil had been properly excavated. Based upon these results Hydro Tech petitioned the NYSDEC to close the case, and their Spill number was subsequently closed in October 2008. Hydro Tech then supervised the remaining construction activities and filed a closure report with the OER. In August 2009, OER issued the Notice of Satisfaction to the now completed 4-story commercial building

Hydro Tech performed the removal of underground storage tanks (USTs), and soil and groundwater remediation during the re-development of a former gasoline station into a commercial strip mall. The remediation was successfully coordinated with the New York State Department of Environmental Conservation (NYSDEC) and two NYSDEC spill numbers were closed. The remediation was beneficial to the site development in that the UST and contaminated-soil excavations were generally limited to basement foundations, and groundwater was treated through monitoring and natural attenuation. In other words the remediation did not impact upon the development of the property. Hydro Tech commenced work with a Phase I and Phase II during late 2005, early 2006 which identified gasoline and fuel oil USTs, which were utilized during former gasoline station and auto repair shop operations. In February 2007, Hydro Tech excavated and removed twenty-one (21) 550-gallons gasoline USTs, one (1) 4,000-gallons gasoline UST and three (3) 550-gallons fuel oil USTs. Following removal of the USTs, petroleum contaminated soil was excavated. Hydro Tech then completed the remedial sampling of the site and submitted remedial closure reports to the NYSDEC. With the NYSDEC approval the property was then developed and occupied with a commercial strip mall and parking lot. In November 2007, and in coordination with the NYSDEC, a groundwater monitoring well network was established for the Site as part of a long term monitored natural attenuation (MNA) program for dissolved gasoline compounds. Due to ongoing development at the Site and no access to downgradient portions of the property, Hydro Tech worked with the NYSDEC to have wells installed downgradient of the Site, at an adjacent High School parking area. These monitoring wells were monitored on a monthly basis and sampled quarterly as part of the MNA. Quarterly Status Reports (QSRs) were prepared and submitted to the NYSDEC. As per NYSDEC recommendations, a vapor survey of the basement of the High School was conducted during February 2008. The MNA program was performed from November 2007 to July 2009. Based on the vapor results and low to non-detect levels of gasoline compounds in the groundwater beneath the parking lot for a period of six (6) quarters, Hydro Tech recommended closure of the Spill files in July 2009. The NYSDEC concurred with our recommendations, and subsequently closed the spill files in October 2009.

Hydro Tech worked with the New York City Mayors Office of Environmental Remediation (NYCOER) to clear Noise “E” Designations assigned to a residential development in the Williamsburg section of Brooklyn following completion of construction. . Upon completion of the development and receipt of the Notice of Satisfaction for hazardous materials, the New York City Department of Environmental Protection (NYCDEP) notified the developer that special windows would be required to mitigate exterior noise. The property owner was faced with a dilemma because construction had already been completed and replacing windows would exceed the project budget. To solve this issue, Hydro Tech proposed the performance of a Noise Assessment to determine if the existing windows effectively mitigated exterior noise. The assessment was coordinated with the NYCDEP and was performed through a series of noise tests which measured sound in the interior and exterior of the buildings over a 24-hour period. The results of the investigation indicated the existing windows adequately mitigated noise in accordance with the New York City Department of Planning requirements, and as such, a Notice of Satisfaction for Noise was issued for the development. Hydro Tech subsequently applied the knowledge gained through these noise studies to two (2) newly proposed residential buildings being constructed within the same development. Hydro Tech recommended noise surveys be performed to determine the exterior noise levels and the interior noise levels that would be experienced utilizing the proposed standard project windows. Hydro Tech coordinated all work with the newly formed NYC Office of Environmental Remediation (OER) and performed the noise surveys. The noise surveys confirmed that the proposed standard windows would mitigate sound to levels acceptable to the OER and building plans did not have to be revised to include more expensive windows. Upon completion of the buildings Hydro Tech issued a closure report and a Notice of Satisfaction was issued by the OER.

The Client reported oil/water mixture within a pit in the basement, located in the vicinity of a former boiler. Hydro Tech performed remedial activities at the above property under direct oversight of the NYSDEC in order to address the petroleum spill at the property. The remedial activities included the removal of the oil/water mixture from the basement followed by the installation of monitoring and recovery wells. Weekly Enhanced Fluid Recovery (EFR) events were performed for over a span of six months. The inactive boiler was abandoned in place with approximately 1,500 gallons of foam on May 22, 2007. Oxygen Releasing Compounds (ORCs) were injected in the vicinity of the wells and monthly groundwater monitoring was continued as part of the remedial efforts. A Vapor Intrusion Survey was performed and no possible impacts were noted on neighboring properties. The NYSDEC closed Spill # 0511521 on November 28, 2007.

Lawrence Aviation Industries, Inc. (LAI) site in Port Jefferson Station, Suffolk County, New York was an active manufacturer of titanium sheeting for the aeronautics industry. It is currently listed on the National Priority List (NPL) for numerous violations. Numerous areas of concerns exist at the site. At the request of the NYSDEC, Hydro Tech is currently undertaking the remediation of hazardous wastes from the property. This includes the removal of petroleum and PCB contaminated liquid from all machine pits, soil contaminated with volatile organic compounds and PCBs and all transformer pads containing PCBs. All petroleum storage vessels will be removed from Site. All petroleum stained areas have already been cleaned by Hydro Tech.

Hydro Tech has prepared and submitted a Remedial Action Plan (RAP) to the New York State Department of Environmental Conservation (NYSDEC) for the tasks associated with the UST removals. A separate RAP was prepared and submitted to the Nassau County Department of Health (NCDOH) to address the storm water drywells and floor drains at the Site. Ten drywells have been properly remediated under the direct oversight of the NCDOH and a Hydro Tech geologist. Eight (8) USTs have been removed and contaminated soil was excavated and disposed of. The excavated areas have been backfilled with clean soil allowing for the final restoration of the excavation areas. As per the NYSDEC recommendation, five (5) monitoring/recovery wells have been installed at the site and a monthly monitoring program has been instituted.