Tidewater provides services on this GSA contract under Special Item Numbers:
• 899-1: Environmental Planning Services and Documentation
• 899-2: Environmental Compliance Services
• 899-4: Waste Management Services
• 899-8: Remediation Services
GSA SIN 899-1
Environmental Planning Services and Documentation
Tidewater provides the following services under SIN 899-1:
• Environmental Impact Statements Under EPA
• Endangered Species and/or Wetlands Analysis
• Environmental Program Management and Environmental Regulation Development
• Economic, Technical, and/or Risk Analysis
• Vulnerability Assessments
• Biochemical Protection
• Identification and Mitigation of Threats
Tidewater's expertise in wetlands delineations and studies encompasses federal and state/local wetland delineation techniques including U.S. Army Corps of Engineers Wetland Evaluation Techniques and a variety of other assessment methodologies, as well as expertise in permit compliance requirements of applicable federal (Section 404 of the Clean Water Act), state (wetland protection acts/regulations) and local (town/city ordinances) regulations. Tidewater's staff of environmental scientists, geologists, and environmental engineers has performed wetland delineations, wetland mitigation designs, and wetland permitting for a number of Federal, State, and private clients including U.S. Department of Agriculture, Maryland State Highway Administration, and private developers.
Tidewater staff is also well versed in performing vulnerability analyses, biohazard protection, and threat mitigation. Tidewater has assisted the U.S. Department of Labor, National Office of Job Corps in developing policies and preparing anti-terrorist plans, biohazard plans, and emergency response plans for 122 Job Corps Centers throughout the country and Puerto Rico .
Tidewater provided safety and security assessments at the Detroit Job Corps Center , Detroit , Michigan . This center has 700 students who live at the center full time. Tidewater was present at the center during the blackout that spread throughout the Eastern and Midwest United States in 2003. Tidewater assisted in organizing the students, providing a head count, securing the Job Corps Center, and keeping order at the Center during the crisis. Tidewater also determined the need for emergency management plans at the Center and assisted the Detroit Job Corps Center in the preparation of emergency management plans to handle similar situations.
At the U.S. Department of the Treasury, Tidewater assisted in the development of policies and plans to handle mail and incoming packages after the discovery of anthrax spores in packages at Federal buildings. Tidewater also conducted testing for anthrax spores in the mailrooms at the Main Treasury Building and Annex Building .
GSA SIN 899-2
Environmental Compliance Services
Tidewater provides the following services under SIN 899-2:
Tidewater's staff has developed and implemented environmental management programs for Federal and private facilities to ensure full compliance with Federal and State environmental regulations. Tidewater has extensive experience in obtaining operating permits including National Pollutant Discharge Elimination System (NPDES) Permits, air quality permits, and oil operations permits. Tidewater also performs the required sampling to ensure compliance with the applicable permits.
Tidewater staff members are experts in obtaining operating permits throughout the country. Tidewater has obtained operating permits for Federal Prison facilities in California , West Virginia , Kentucky , and Pennsylvania .
Tidewater has also prepared contingency plans for large utility companies to determine the areas where hazardous materials could potentially be encountered. Tidewater has developed maps where the potentially contaminated areas were located and what the construction crews should do when working in these areas.
GSA SIN 899-4
Waste Management Services and Software
Tidewater provides the following services under SIN 899-4:
• Data Collection, Feasibility, or Risk Analysis
• RCRA/CERCLA Site Investigation
• Hazard and /or Non-Hazard Exposure Assessments
• Waste Characterization and Source Reduction Studies
• Review and Recommendation of Waste Tracking or Handling Systems
• Creation and Maintenance of HAZMAT/Non HAZMAT Tracking Systems and/or software
Some project examples include:
Site Investigation and Risk Assessment for Metro Redi-Mix Concrete Plant, Baltimore , MD
Tidewater performed a site assessment of this former scrap yard, located in a heavy industrial area in the Westport Section of Baltimore. The site assessment included historical research of the property including review of aerial photographs, historical topographic maps, Sanborn Fire Insurance maps, and previous environmental studies at the site; a site reconnaissance; a review of files at the Maryland Department of the Environment (MDE); interviews with local residents and the local fire department; and the preparation of a detailed report.
The site assessment revealed that the site was immediately adjacent to a National Priorities List (NPL) site and that there was suspected PCB contamination at the site. Tidewater then developed and conducted a sampling program to determine the area and vertical extent of subsurface contamination. The sampling program included excavation of test pits, soil sampling using a Geoprobe, and installation of groundwater monitoring wells.
The sampling confirmed that the soil and groundwater were contaminated with PCBs. Tidewater performed a risk assessment of the property. Based on the risk assessment, it was determined that engineering controls could be implemented to prevent migration of the contamination off-site and to mitigate hazards to human health and the environment. These engineering controls include construction of a fence around the perimeter of the property, implementation of full-time site security, and capping of the contaminated areas.
The planned development was to pave the site with Portland cement concrete. Furthermore, the site was connected to the Baltimore City water and sewer system. Therefore, Tidewater recommended that the site be developed as planned by Metro Ready Mix.
Tidewater prepared the Brownfield's application for submittal to Maryland Department of the Environment (MDE). Tidewater also represented Metro Ready Mix at public hearings and zoning meetings that were conducted by the City of Baltimore . Tidewater also prepared the site plans for development of the property. The plans and the Brownfield's application were approved by MDE
Hazardous Material Program Management for the General Services Administration – National Capital
Tidewater provides hazardous materials surveys and risk assessments to collect data and document the existing environmental condition as well as identify areas of environmental concern for hundreds of GSA-NCR owned and leased real properties. These investigations supplement work plans that are generated for planned reconstruction activity within each facility. For properties documenting environmental concerns, Tidewater assists GSA in the preparation of plans and specifications to assure proper and safe abatement procedures in accordance with EPA, OSHA, General Services Administration (GSA), and local requirements. The contracts require multiple and simultaneous task orders. The studies are formulated to ensure each facility is in compliance with the Clean Air Act, Clean Water Act, Safe Drinking Water Act, Hazardous Materials Transportation Act, Federal Insecticide, Fungicide and Rodenticide Act, Noise Control Act, and the National Historic Preservation Act. Tidewater also provides environmental and personal exposure monitoring for emergencies. Tidewater is often called upon to respond with between 30 minutes and four hours notice. The following are representative tasks:
• HUD Building , Washington , DC: Tidewater responded to an emergency situation when a transformer with PCB containing oil exploded within the building. Tidewater formulated a response plan in conjunction with GSA Safety Representatives and conducted bulk and wipe sampling throughout the building to assess building conditions. Based upon sample results, Tidewater provided reports with recommendations in accordance with required clean up levels for PCBs.
• Suitland Federal Center , Suitland , Maryland : Tidewater provides asbestos program management services, air, wipe, and bulk sample collection to determine the extent of asbestos fiber contamination throughout the building and updating existing management plans with most current abatement data. Tidewater also provides oversight of asbestos cleanup and abatement. Tidewater also conducts indoor air quality surveys, condition assessments for drinking water sources including ice machines and report findings in accordance with regulatory guidelines.
• Washington Navy Yard, Washington, DC: Tidewater collects wastewater samples from a total of nine (9) storm water effluents within the Washington Navy Yard and conducts analysis for parameters to fulfill NPDES permitting requirements. Sampling is conducted on a monthly basis and results are reported to GSA in accordance with permitting requirements for pollution prevention.
• Commerce Building , Washington , DC : Tidewater conducted a risk assessment to determine if an exposure hazard existed during a window replacement project within the childcare center of the commerce building. The windows contained lead based paint. Tidewater conducted lead abatement monitoring of interior and exterior windows to confirm minimum and maximum exposure levels. Emergency response confirmatory sampling of interior and exterior windows and wipe sampling of toys and surfaces was conducted prior to reoccupancy.
• National Records Center , Suitland , Maryland . Performed asbestos air monitoring and risk assessment for post fire inspection at this facility.
• Provided peer review and technical evaluation of a Remedial Action Plan for a VOCs and metals contaminated industrial site within the shore line of the South-East Federal Center/Washington Navy Yard, under Tidewater's term contract. Evaluated results of bench scale and pilot scale studies to provide FS recommendations for acceptable remedial actions and obtain a Record of Decision (ROD) from the regulatory agency.
GSA SIN 899-8
Remediation Services
Tidewater's services under SIN 899-8 include:
• Preparation, Characterization, Field Investigation, Conservation, and Closure of Site
• Long Term Monitoring/Long Term Operation (LTM/LTO)
• Containment, Monitoring, and/or Reduction of Hazardous Waste Sites
Recent Tidewater experience under SIN 899-8 includes:
Site Characterization, Remedial Design, and Construction Oversight, Southeast Federal Center , Washington , D.C.
Tidewater was contracted by GSA, National Capital Region to provide remedial design and construction oversight services for the removal of PCB contaminated sediments from the Southeast Federal Center, Washington, D.C. The total cost for the project was $60,000,000. Tidewater's portion of the project was $300,000. The remediation was completed in 2003.
Pre-Existing Site Conditions :
• The site is located on the banks of the Anacostia River , within two miles of the White House. The site began in 1799 as a shipbuilding facility, became an ordnance research and manufacturing facility, then, since World War II, was restructured to become administrative offices and storage space. The SEFC portion was transferred to GSA in 1963.
• The main contaminants in the groundwater, soil, sediments, and surface water are solvents, polyaromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), and heavy metals, such as lead, arsenic and chromium.
• The physical facility is approximately half of the 124-acre, 200-year old Washington Navy Yard. Substantial environmental remediation and demolition activities at their facility have been completed prior to Tidewater's activities at the site.
Remedial Design
• Tidewater provided remedial design services for the removal of contaminated sediments from 2 storm water outfalls, including the primary storm sewer outfall onsite as well as cleans up 13 soil hot spots contaminated with heavy metals & PCBs. The sediments were contaminated with PCBs and heavy metals.
• The tasks included review and approval of shop drawings and submittals from the contractors, construction inspection, and monitoring and preparation of record drawings. The project required three inspectors full time for six months.
• Developed complete design drawings and specifications.
• Remedial design addressed the removal of approximately 375 cubic yards (CY) of sediments.
• Tidewater's responsibilities also included construction inspection services during remediation activity.
Construction Inspection Services:
• Reviewed work plans submitted by the Hazardous Waste abatement contractor for compliance with design specifications.
• Daily Inspection of containment area built for interim storage of sediments to ensure no breaches or penetrations were present within the polyethylene liners.
• Daily check of worker certifications and execution of daily worker sign-in/sign-out logs.
• Documented any safety concerns or breaches of contract specifications by contractor or sub-contractor personnel.
• Verified that daily employee exposure monitoring activities were being properly executed by contractor.
• Ensured truck wash area was constructed in accordance with all requirements.
• Performed personal and area air monitoring to ensure that workers and residents in the project vicinity were not exposed to contaminants above OSHA PELs.
• Proper manifesting of trucking activities for materials transported from the site to the approved disposal facility.
• Approximately 600 cubic yards (CY) of sediments were excavated and transported off-site for disposal at an approved disposal facility.
• Tidewater prepared waste manifests and tracked the disposal shipments from the time they left the site to the time of final disposal.
Site Characterization and Long Term Monitoring/Long Term Operation, Gainesville Job Corps Center , Gainesville , Florida
Tidewater developed and implemented a soil and groundwater remedial design at the Gainesville Job Corps Center site in Gainesville , Florida for the U.S. Department of Labor, National Job Corps Office.
Site Background Prior to Tidewater Effort:
• Previous site characterization investigations indicated that two feet of free floating petroleum contamination was present as a result of leaking underground storage tanks (USTs) that had been subsequently removed.
• Quarterly monitoring had indicated free product and groundwater contamination with BTEX levels of over 200ppb. Existing pump and treat system had not succeeded in reducing BTEX levels to the 5ppb treatment goals specified by Florida DEP and Alachua County Department of Environmental Protection after almost 5 years in operation.
• Based on the review of sampling data and site documentation, it was determined that adequate source remediation had not been conducted prior to installation of the existing treatment system.
Tidewater Design Features:
• Tidewater performed a pump test to determine aquifer properties and reviewed mandated quarterly groundwater sampling data to better delineate free product extent.
• Tidewater determined that additional source remediation was required.
• Tidewater performed MODFLOW groundwater modeling and MT3D contaminant transport modeling to determine the most effective means of remediation.
• Tidewater prepared a design and managed the excavation of the contaminated soil and free-product. The contaminated soil was replaced with clean soil and the property was restored to original condition.
• Tidewater designed and installed a pump and treat system to remediate the groundwater contamination. The treatment system consisted of activated carbon and an oil/water separator utilizing components from the existing system to provide a more cost efficient solution for the Department of Labor
• Tidewater prepared construction specifications and drawings for the pump and treat system and assisted the Department of Labor in preparing bid documents, evaluating bids and selecting a remediation contractor.
• Tidewater provided construction supervision services during the remedial system construction.
• Tidewater performed quarterly sampling and operation and maintenance of the pump and treat system.
• As a result of the remedial design, the BTEX concentrations were reduced from several hundred parts per billion to less than five parts per billion under two years.
• Tidewater worked with the Alachua County Department of Environmental Protection and the Florida Department of Environmental Protection to close the case after remediation was completed.
Unique Benefits to Client:
• Tidewater incorporated existing monitoring wells and treatment system components to reduce remediation system costs by over $100,000. The total cost for the project was only $250,000.
• Tidewater's ability to correctly delineate and completely remove contaminated soil and free-product was key to meeting cleanup goals quickly.
• The design for the project was completed in 2001. The case was closed by Alachua County Department of Environmental Protection in 2003. Tidewater met cleanup goals and obtained site closure in two years, whereas the existing system had been in operation for almost five years without meeting site cleanup goals.
