Client Confidential, Virginia
Carried out temperature modeling using various equations to determine impacts of water cooling in effluent holding on effluent dissolved oxygen levels as part of stream modeling project. This yielded an overall process improvement in regulating discharge and temperature.
Client Confidential, New Brunswick, Canada
New Brunswick, Canada
Conducted an evaluation of mill sludge handling and primary clarifier to determine and fix cause of floating primary sludge, which was being shown to combine with polymer overfeed, air entrainment and woodyard water mixed with primary sludge.
Client Confidential, AL
Prepared and provided detailed review of treatment technologies for secondary fiber pulp and paper wastewater, including ultrafiltration, RO, SBR, anaerobic treatment, activated sludge treatment and sludge handling methods.
Client Confidential, Nashville, TN
Carried out two sludge depth studies for an aerated stabilization basin. Additional items included sediment sampling, water quality and tracer studies using lithium chloride. This resulted in waste water treatment optimization.
Client Confidential, Karnataka, India
Evaluation for effluent color removal and sludge handling improvements that yielded lower of operations costs and improved regulatory compliance.
Client Confidential, West Virginia
Conducted an evaluation of a large paper and pulp client to mitigate the impacts caused by the paper mill landfill shifting, causing an overtopping and release of various liquid contaminates down a ravine. Evaluation included the structural capability of the landfill and the causes of the release and to prevent future releases or concerns.
Client Confidential, Grasim, India
Conducted an evaluation of a large industry practice for pulp and paper for aiding in maximizing process control, color, removal, leakage prevention, from the effluent piping systems, and sludge handling improvements. We also assisted in regulatory compliance and public relations.
Client Confidential, Raleigh, NC
Evaluated options for water minimization at a paper manufacturing site, including strategies for reuse, from reduced flow spray nozzles to reusing cooling tower water after wastewater treatment to minimize leaks. Work resulted in client saving over $300,000.00 per year.
Client Confidential, Charlotte, NC
Developed wellfield for a paper manufacturer to avoid cost of purchasing municipal water. This resulted in cost savings of over $200,000 per year.
Client Confidential, Atlanta, GA
Prepared a land application study for a recycled paper mill that examined waste including a detailed review of soils, review of prior consultant records and observations, soil reports, and laying out recommendations for land application improvements to be consistent with site soils. We also provided direct insight for future plans to help reduce operating costs for residual soils and solids disposal vs. utilizing failing technology and expenses.
World and Asian Development Banks
Ho Chi Minh City, Vietnam
Contracted to carry out the first ever air quality study to investigate exposures to particulate matter to young children suffering for acute respiratory illness across various districts in South Vietnam. This study involved several agencies and local environmental groups in Vietnam and our work led to the first insight on actual exposures and health outcomes that was coupled with conducting a hospital based admissions survey to understand chronological timelines of exposures leading to overall health.
Zurich North America
Oklahoma City, OK
Conducted a multi-year air modeling and measurement campaign for a large client under coverage from Zurich International around damage to hundreds of vehicles occurring each Spring from 2014-2016. Our work investigated all of the incidences from this time period and using state of the art recreation models and examining all local and ambient sources of potential pollution impacts we were able to identify the cause of these incidences and resolved the issues that had plaque the dealership and their several locations in the same area for some time.
Somerville, MA & Clarkson University, Potsdam, NY
Constructed from scratch two state of the art mobile air pollution monitoring laboratories that carried an array of scientific monitoring equipment for measurements of all various traffic related air pollution. Each mobile van was designed specifically for use and carefully articulated to ensure that all equipment would be protected and operating in accordance with all physical properties of airflow and particle dynamics.
Beverly Hills, CA
Contracted to carry out a full-scale exposure assessment evaluation for their state-of-the-art hydroxyl radical solution for removing contamination from hospital rooms as a leading disinfectant. The study was designed to evaluate if TOMI could downgrade their current PPE requirements as their product was proposed to not cause any elevations in hydroxyl radicals that could be considered dangerous to human health. The study resulted in the development of alternatives pathways for new PPE therefore benefiting TOMI with new approaches for cost effective PPE other than what was proposed across the board by OSHA.
Momentive Performance Materials
Contracted to conduct an intensive review of all environmental, health, and safety protocols including all RCRA and waste management manifests and permits. Constructed a new database for reporting and characterization all waste streams to maximize accountability and provide a new comprehensive plan for ensuring that all waste streams match accurately on reporting permits for state and federal compliance programs.
Carried out an intensive odor assessment stemming from several issues concerning odors and where the source of odors may be coming from within the treatment plant. The odor assessment was designed to collect a total of 4 days’ worth of samples at various locations outlined to capture short- and long-term odor concentration gradients. The goal of the 4-day sampling design yielded a successful campaign with additional odor modeling involved of where the actual odors of concern were originating from.
Glens Falls, NY
Carried out a detailed traffic assessment to confirm that there would be no traffic impacts related to their operations on Butler Pond Road in Queensbury, NY. As expected, no impacts were found from the study.
Long Island, NY
Based on long term issues around health impacts at a New York City School, conducted a 24‐day total two‐season study (estimated maximum, including setup/breakdown) ambient (outdoor) air quality study during the winter 2012/2013 (12 days) and summer 2013 (12 days) in the Middle School and High School to monitor and assess various airborne contaminants/pollutants of concern that could lead to adverse health impacts from acute and chronic exposures. Testing parameters include: atmospheric/precipitation data, temperature & relative humidity, formaldehyde (urea formaldehyde sources), nitrogen oxides (NOx), polynuclear aromatic hydrocarbons (PAHs), airborne dust (PM2.5 and ultrafine particulate), mercury vapor, carbon monoxide (CO), carbon dioxide (CO2), and elemental carbon (diesel particulate matter). Testing in the southeast portion of the Middle School would also incorporate moisture and mold/microbial testing to identify point sources of water intrusion and mold and microbial fragments.
Safe Routes to School National Partnership
Contracted to develop a first ever resource guide on Safe Routes to School (SRTS) and air quality targeted to the audiences of Safe Routes to School practitioners, school leaders and local government staff and policy makers. The purpose of the guide was four-fold:
- To examine the air quality issues related to traffic (particularly ultrafine particles and other traffic-related air contaminants) and the research about the impact on human health, in a way that is easily understood by a non-scientist audience;
- To explore policies and program elements that can reduce exposure to traffic pollution that can be applied to Safe Routes to School initiatives;
- To share examples (from within the United States or other countries) of successful implementation of policies that could be applied to Safe Routes to School initiatives; and
- Overall, to equip practitioners and local governments with the knowledge they need to create and implement bicycling and walking programs and infrastructure that increase physical activity while also mitigating exposure to unhealthy air.
Contracted to develop a first ever training document around personal exposures to PCBs. CHANGE developed a training manual that included various sections on proper pesticide & herbicide, and chemical handling, storage, management, application, and disposal based on federal and New York state-specific regulations. Additional applicable regulations were included in the manual including those covering hazardous materials, petroleum products, universal waste, and spill management. At the completion of the manual, we carried out a one-day intensive training seminar.
Glens Falls, NY
Carried out several state and federal required assessment for declassification of various areas of the plant under process safety management and risk safety management programs. Assessments have also included conducting a number of Occupational Safety and Health Administration (OSHA) compliance audits for ensuring regulatory reporting and safety were in line with state and federal regulations.
Essity Professional Hygiene
South Glens Falls, NY
Conducted a state-of-the-art Thermal Study including a detailed water modeling to evaluate the impact of their discharge on the Hudson including determining what the temperature Essity could discharge to ensure that the surface temperature does not exceed the required 90 degrees. As part of this assessment, CHANGE outlined through various statistical models how much water would need to be added to the effluent (i.e., mixing) in order to meet that requirement.
Client Confidential, Cove Point, MD
Cove Point, MD
Carried out an intensive review requested by the Federal Energy Regulatory Commission around the operations at an energy facility to ensure that no offset impacts from operations were impacting the local nearby community and that all regulations were being followed according to all specific authorities and regulations.
Delos Living (International Well Building Standard)
Conducted an intensive peer review for Delos Living for the development of the first ever WELL Building Standard and WELL certification. Efforts were focused on writing and reviewing chapters around air quality and human exposure assessment. This work led to the development of smart buildings that could allow for control into developing technologies for air pollution and other environmental needs for protection of human health.
Carried out all the required state and federal requirements for submitting an air permit application for a minor source construction permit for their waste treatment storage and disposal facility. DART currently operates a Registered (R118) waste treatment and disposal operation in Mecklenburg County that was deemed exempt from air quality permitting by Mecklenburg County Air Quality (MCAQ). DART is planning to add the following equipment to the facility to process a refinery wastewater that contains benzene and lesser concentrations of various other organic compounds.
Concerned Citizens of the Environment
Long Island, NY
CHANGE agreed to a two-part environmental assessment. The first part of the assessment we reviewed all relevant information from the documents provided to us by the Broome County Committee (BCC) Executive Board regarding the Brookhaven Landfill. The second part of the assessment developed technical comments or recommendations based on the assessment of the information. Comments and recommendations prepared focused on the protection of human health and the environment consistent with current regulation and guidance addressing exposure concerns of the community.
Casella Waste Management
Conducted a multi-phase air quality modeling investigation into proposed impacts of neighbors to operations stemming from the Ontario landfill operated by Casella. Worked closely with Casella to develop wind rose plots for outlining downwind impacts areas clearly indicating no impacts to surrounding neighbors. We were also contracted to develop a key questionnaire that could be used for future complaints that provided a more robust and comprehensive response to potentially concerned neighbors.
Provide support to ongoing contracts around climate change and air quality issues at different intermodal facilities.
The United States Army Corps of Engineers
To ensure that the Army’s OB/OD program is supported by the best scientific and technical information, the Army requested a peer review of the UAV emissions characterization project. Independent, objective peer review is regarded as a critical element in ensuring the reliability of scientific analysis. The objective of the work described here was to conduct an Independent External Peer Review (IEPR) of the report entitled “Characterization of Air Emissions from Open Burning at the Radford Army Ammunition Plant,” as well as relevant supporting documents (hereinafter: RFAAP UAV OB/OD IEPR) in accordance with procedures described in the Office of Management and Budget (OMB), Final Information Quality Bulletin for Peer Review (OMB, 2004). Supplemental guidance on evaluation for conflicts of interest (COIs) was obtained from the Policy on Committee Composition and Balance and Conflicts of Interest for Committees Used in the Development of Reports (The National Academies, 2003).
Battelle, Columbus, OH
Battelle, Columbus, OH
Contracted to suppor EPA’s roll-out and implementation of the expanded nationwide PAMS network, support which includes the development of Quality Assurance (QA), technical assistance, and other implementation support documents. Worked with Battelle on part of the PAMS quality system for the development and implementation of a national proficiency testing (PT) program with which the entire network’s bias may be assessed on a periodic basis. The PAMS PT program involves generation of spiked samples, on an annual basis, with concentrations of target analytes for VOCs and carbonyls that are blind to the site and associated support laboratory and which are representative of expected real-world ambient air levels of PAMS priority compounds.
Knolls Atomic Power Laboratory (KAPL)
An award for a stack replacement design contract for two boilers that burn ultra-low sulfur diesel (ULSD) fuel to supply steam heat to the Kesselring Site approximately from September 15 through May 15 each year was provided. The award required to deliver a design that avoids high concentration impacts from boiler combustion gases at site‐wide HVAC air intakes. To accomplish this, CHANGE proposed and conducted a refined air dispersion modeling analysis using the USEPA’s AERMOD modeling system. Details on the technical approach, schedule, and deliverable are presented in the following sections of this proposal. CHANGE conducted a refined air dispersion modeling analysis using the USEPA AERMOD system to determine an acceptable exhaust stack design, such that the combustion exhaust does not negatively impact site‐wide building intakes. The AREMOD system incorporated actual spatial representation of structures, emission sources and receptors to calculate concentrations using processed meteorological data. The modeling was performed following USEPA and New York State Department of Environmental Conservatism (NYSDEC) air dispersion modeling guidelines. Predicted concentrations were compared to the design criteria discussed in the previous section and from our results were not found to be impacting the building of concern on the KAPL campus.
American Heart Association (AHA)
Contracted by the AHA to assess the outcomes of the use for Renewable Portfolio Standards (RPSs) to identify one or two key policy levers that can facilitate RPS having benefit in addressing air quality and cardiovascular disease. Two major deliverables were the outcome for this work with one being a policy bottom line that will allow the AHA can take the guidance provided by our analysis and enact it into national policy that will require all 50 states to comply with the RPS goals outlined therein. This is the first ever policy statement in this area to be drafted.
Delaware Riverkeeper (DRN)
DRN had commissioned CHANGE to carry out an expert evaluation of the impacts of Governor Corbett’s Executive Order (2014-03): Leasing of State Forest and State Park Land for Oil and Gas Development. This team of experts fully assessed, identified, and articulated the harms that can and most certainly will result from this executive order. This analysis focused on forest impacts, groundwater and surface water, air impacts, public health concerns, and other relevant issues related to oil and gas exploration activities. A white paper report was developed for public release and was used to inform public discussion over the matter. This assessment helped to inform decisions regarding shale gas development and its infrastructure within the watershed as well as within other communities that would/do bear similar ramifications from the proliferation of the industry. This assessment had also informed public discussion over the concept of forced pooling, whereby landowners would be mandated to allow drilling under their private lands from well pads on neighboring sites.
Cedar Peaks Engineering
Wake Forest, NC
Oversaw the full environmental operations and permitting for a multi-state asphalt company. Provided all levels of permitting and stack testing support for full compliance for all local, state, and federal requirements for operating the mobile emissions plant.
Town Commissioners, Tunkhannock, PA
Conducted an intensive fugitive and air emissions for silica dust of a proposed silica sand transfer station looking to be built with several hundred meters of a nearby community. Analysis included conducting an expert statistical evaluation of yearly emissions and impacts on the downwind areas. Various weather and emissions models were used to calculate and illustrate that the community at large would have in fact been impacted by the emissions generated not only from the truck traffic hauling product in and out, but also from the rail operations leaving the site with silica sand, and stored piles on site from blow off into the community. The findings resulted in the application of the plant being denied.
Conducted an intensive emission inventory review of a proposed hot mix asphalt plant that was looking to be built in a sensitive area in rural PA. Analysis also included conducting an expert statistical evaluation of yearly emissions (i.e., particulates and various greenhouse gases) and impacts on the downwind areas. Various weather and emissions models were used to calculate and illustrate that the community at large would have in fact been impacted by the emissions from the proposed plant leading to the application of the plant being denied.
Conducted a multi-phase environmental assessment around complaints pertaining to the operations of a nearby wood and landscaping facility. A series of high intensive and expert models and calculated measurements for a variety of environmental air quality components were carried out to effectively identify not only to show that the wood facility was the source of air pollution, but that also the wood dust from the facility was impacting the health of the workers.
Prepare quarterly (including any additional reports desired) on status of GHG reporting year for those cement plants in states and provinces where GHG reporting is required by LH. The project will allow Lehigh Hanson and its parent company, Heidelberg Cement to make informed decisions on various allowance trading for carbon credits, purchases, and offsets each quarter for a more efficient and comprehensive approach to investments in the green markets in Canada and the United States.
CHANGE was retained by the Bristol, PA school district to design and implement a site-specific Community Air Monitoring Program (CAMP) during earthmoving and excavation and vertical construction of a new elementary school. The project involved deployment of meteorological and real-time dust monitoring equipment, and development of a soil and dust management plan. Daily reporting and data management activity included extraction of real time data from perimeter and personal dust monitors and meteorological equipment, statistical analysis, and reporting to the school district.
Client Confidential, National Client
Designed and implemented a fugitive emission monitoring program, including: personal dust monitors, recording instrument perimeter monitoring (including real-time dust sampling), on-site X-Ray Fluorescence analysis of soils, meteorological monitoring, and daily reporting. The health and safety advisory (HASA) was developed and supported the clients Health and Safety Plan to inform the workers involved with site preparation of the site history and potential hazards associated with residues of agricultural pesticides. It outlined potential routes of worker exposure, recommended industrial and personal hygiene procedures to reduce exposure, summarized the monitoring and sampling procedures to be used, and provided health and safety information about the residual pesticides. Post grading topsoil samples were analyzed by a DEP-certified commercial laboratory, and the resulting data were analyzed following DEP risk characterization procedures to demonstrate a level of no significant risk. The environmental management and monitoring approach enabled the client to successfully meet all City and State requirements, respond to unplanned issues arising from an unseasonably wet construction schedule, address the many concerns of the public associated with development and dust emissions, and work with municipal officials to keep construction on schedule by demonstrating safe and efficient management of soil and dust emissions
University of Buffalo
Buffalo, New York
The objective of this study is to examine the relative concentrations of ultrafine particles in a residential neighborhood downwind of the Peace Bridge, which has previously been identified as an area having a high prevalence rate of asthma in children (Lwebuga-Mukasa and Dunn-Georgiou 2000). Because of extended periods impacted by idling or stop-and-go heavy diesel truck and automobile traffic, it had been thought that local source emissions may be related to these health issues. The seasonal measurements collected provided great detail into assessing the locations of several ambient air quality fixed site locations including selection of several homes through hot spot analysis. Further homes expected to have high ambient and mobile source emissions were further characterized along with comparison to fixed sites located in relatively close proximity (McAuley, et al., 2010, Indoor Air) as a result of earlier work (McAuley et al., 2010, AS&T).
Harvard School of Public Health
CHANGE along with collaborators, developed a data collection and synthesis system that can remotely combine real-time air pollution and GPS data from multiple sensors into a high-quality and analysis-ready data set. In addition, aided in implementing multiple monitoring protocols using different forms of mobile monitoring (using vehicles, bicycles, and pedestrians) as well as fixed-site monitoring on the CitySense platform, using community input to help select sites, design protocols, and collect measurements. CHANGE also developed regression models predicting measured concentrations of multiple pollutants as a function of real-time meteorology and source characterization potentially available across the entire city. Direct consulting included also comparing protocols from the perspective of statistical robustness, spatiotemporal coverage, reliability, long-term sustainability, and ability to expand to additional traffic-related air pollutants, in order to develop an approach that could be used in future large-scale health studies. As part of this research, CHANGE, trained and provided written instrumentation standard operating procedure, training, protocols, quality assurance measures, and statistical support for data cleaning and analysis. Other major activities based on experience and expertise was esigned and implemented several ambient fixed site monitoring stations that measured several different meteorological and pollutant species for continuous measurements.
CHANGE directly aided in the development of several statistical analysis programs and data record keeping for a large scale air quality study. This involved maintaining and updating all laboratory, ambient, indoor, and personal air quality monitoring protocols and chain of custody sheets for samples. CHANGE also designed and trained all foreign staff to learn how to utilize and setup several fixed site locations in several locations in Ho Chi Minh City, Vietnam. This also included best practices in accordance with standard US EPA guidance for maintaining and monitoring instrument operation through testing and conducting in field calibration and quality control measures. CHANGE also wrote and implemented several different standard operating procedures for the use of various air quality instruments. In addition, training included accessing US based databases for assessing air quality trends (e.g., National Air Toxics Trend Stations (NATTS), Speciation Trends Network (STN).
The special study was to conduct several weeks of mobile monitoring assessment of near roadway, ultrafine particle concentrations at several locations throughout the Longwood Medical Area in Boston, MA, USA. As a result of the commencement of a large scale construction and demolition project, monitoring of combustion related to ultrafine particles near the site and surrounding roadways would provide preliminary data for comparison. This research project also was to inform the best locations for implementing several fixed site locations in the vicinity of the Longwood Medical area for continuous monitoring or ambient and mobile air pollution sources. Collected data was used for providing insight for designing future studies and health effect assessment.
EPA Region 8 ESAT Contract
Prepared an activity-based asbestos human health risk assessment for an operable unit at the Libby, Montana superfund site, one of the largest superfund sites in the United States
Aarcher Institute of Training
Served as one of the two primary instructors for the Environmental Sampling and Data Quality and Mastering RCRA training courses. Developed and taught lectures on quality assurance, quality management plans, quality assurance project plans, data quality objectives, sample process design, field and laboratory methods, data review-verification and validation, data reduction and reporting, assessment and oversight, data quality assessment, standard operating procedures, working with the laboratory, project planning and conceptual site models, hazardous waste identification, recycling hazardous waste, hazardous waste generator requirements, treating hazardous waste and other permitting issues, and land disposal restrictions.
Confidential Client, Private-Sector Non-Profit Organization
Provided expert analysis and litigation support to a non-profit organization during the course of litigation connected to the cleanup of a former steel mill on Chesapeake Bay. Conducted a detailed analysis to determine if the facility was operating landfills and surface impoundments which comply with federal and state hazardous waste laws. In addition, evaluated each waste stream generated from the steel making and metal finishing areas to determine if these waste streams are subject to the RCRA or the Maryland Controlled Hazardous Substances Act.
Provided regulatory analysis and RACERTM cost analysis support for multiple task orders under this contract. Cost analysis scenarios prepared for multiple environmental engineering/cost assessments which included removals, decontamination, and land use controls. Regulatory analysis included review and/or preparation of work plans and reports to ensure that all state and local requirements for management of munitions and any munitions constituents were met in addition to USACE and DoD requirements.
Conducted a detailed review of state and federal solid, hazardous, and medical waste regulations for all 50 states and the Commonwealth of Puerto Rico and developed a database of key differences and their impact on client operations. The database provided the client with one overview report summarizing the results for each state evaluated while also providing a more state-specific detailed report. Worked closely with client to ensure database format could be easily uploaded into existing client data management system.
State of New Mexico
Responsible for ensuring that facility activities were in compliance with regulatory requirements and policy. Conducted technical document reviews of permit applications, risk assessments, remedial investigations, and remedial alternatives evaluations. Prepared notice of deficiency comments for documents submitted by Sandia National Laboratory, Cannon Air Force Base, Kirtland Air Force Base, and Los Alamos National Laboratory. Oversaw all subcontractor activities. Developed an ecological risk assessment guidance document.
EPA Regions 2, 3, 4, 5, 6, 7 and 9 Regional Oversight Contracts
Responsible for providing CERCLA support for a range of technical issues related to federal facilities. This work included technical support for the preparation and/or review of closure plans and associated cost estimates, five year reviews, facility assessments, remedial investigations, remedial action work plans, corrective measures studies, feasibility studies, human health and ecological risk assessments, environmental impact studies, land use controls implementation plans, community involvement plans, decommissioning and demolition, interim measures work plans and reports, remedial action cost estimates, and records of decision and amendments. Documents reviewed were from the following federal and commercial facilities: Aberdeen Proving Ground, DuPont, Fort Pickett, Letterkenney Army Depot, and Radford Army Ammunition Plant. Prepared notice of deficiency comments related to compliance with regulatory requirements/ decision documents and established policies, meeting performance objectives, and technical feasibility. Also provided support for related technical meetings and public outreach efforts.
EPA REPA 1, 2, 3, and 4 Zone 2 Contracts
Multiple Sites throughout the EPA Regions 1, 2, 3, 4, 5, 6 and 8
Responsible for providing RCRA support for a range of technical issues related to hazardous waste management and resource conservation. This work included technical support for the preparation and/ or review of RCRA facility assessments, Part B permit applications, draft hazardous and solid waste amendment permits, closure plans and associated cost estimates, RCRA facility investigation work plans and reports, interim measures work plans and reports, corrective measures studies, feasibility studies, human health and ecological risk assessments, vapor intrusion assessments, environmental impact studies, draft operating and corrective action permits, fact sheets, statements of basis, operations and maintenance reports, training courses and guidance documents (including the Compliance Evaluation Inspection Field Manual, Subpart X Permitting and Compliance guidance and the RCRA Organic Air Emissions Standards guidance. Documents reviewed were from the following commercial facilities: DuPont, Grace Davidson W.R. Grace CO, Harley Davidson, Honeywell International, and Safety-Kleen. Prepared notice of deficiency comments related to compliance with regulatory requirements/decision documents and established policies, meeting performance objectives, and technical feasibility. Served as primary instructor and lead developer for six web-based training courses addressing RCRA Permitting, Compliance and Corrective Action Requirements, and Environmental Management Systems. These courses are currently hosted on one of EPA’s learning management websites (www.ertpvu.org). Also provided support for related technical meetings and public outreach efforts.
Kirtland Air Force Base
Albuquerque, New Mexico
Responsible for preparing the First Five-Year Review Report and Closure Plans for the Open Burn and Open Detonation Units, developed a Land Use Controls Implementation Plan and Community Involvement Plan, and prepared RACER™ Cost Estimates for a variety of remedial actions for the Kirtland Air Force Base located in Albuquerque, New Mexico. Under these projects, ensured that all deliverables met all federal, state and Air Force requirements, participated in public meetings, and served as the primary point of contact for coordination and resolution of any regulatory issues.
Client Confidential – Air Intake Exhaust Stack Dispersion Modeling
Conducted a refined air dispersion modeling analysis to evaluate out of stack concentration impacts on fresh air intakes. Compounds reviewed in the analysis were laboratory exhaust and fuel combustion emissions from near-by boilers. The goal of the project was to provide RTI with sufficient air quality data so that RTI could design exhaust stack modifications and better locate fresh air intakes on the S&E building to prevent pollutant entrainment into the indoor air. Refined modeling results were used to evaluate the downwind exhaust plume dispersion as affected by the site-specific structures and the resulting dilution of out-of-stack chemical concentrations at the air intake locations.
Hickory Springs Manufacturing Company
Contracted by Hickory Springs Mfg. Co. (Conover, NC), Prestige Fabricators (Asheboro, NC), Olympic Products (High Point, NC), and Foamex LP (Cornelius, NC) to conduct ambient sampling of toluene diisocyanate (TDI) near each facility. This study paralleled an ambient TDI sampling study being conducted by the Center for Disease Control (CDC) and the North Carolina Department of Health and Human Services (NCHHS). Results were used to compare and contrast the results of the CDC/NCHHS study. A total of 63 days were sampled for all locations using a sampling protocol developed by the CDC specifically for this study. Single Point Monitors measured TDI for 8-hour and 15-minute averaging periods to ultimately collect samples on filter media prepared for a modified National Institute for Occupational Safety and Health (NIOSH) method 5525 analysis. No samples sent for analysis indicated concentrations above the Liquid Chromatography/Mass Spectrometry detection limit of 0.005 micrograms per sample.
Client Confidential, Federal Title V Operating Permit Renewal
Completed a Title V permit renewal that involved a complete restructuring of the permit. Operating flexibility was successfully incorporated into the new permit by eliminating references to equipment model types and removing unnecessary limits. The renewal also included source testing to determine previously unknown emission rates and facility-wide, refined air dispersion modeling of criteria, and toxic air pollutants.
State of North Carolina
Prepared a North Carolina “SB3” Best Available Control Technology (BACT) analysis to accompany an air permit application for twelve dual fuel (diesel and landfill gas) combustion ignition engines to produce power from landfill gas. North Carolina air permit applications for renewable energy projects require a SB3 BACT analysis as an element to the application package. The analysis reviewed technologies to control NOx, CO, VOC, SO2, PM, lead, and mercury. Planned operation of the engines was 92% on landfill gas. Oxidation and reduction technologies were eliminated as candidates due to catalyst poisoning from oganosilicons present in landfill gas. Selected BACT controls were good combustion practices, turbochargers and aftercoolers, ultra-low sulfur diesel fuel, pre-combustion gas filtration, and proprietary control module.
Developed an air permit application to construct and operate a 29.7 MMBtu per hour biomass boiler. Timing of the application required demonstrating compliance with the 40 CFR Part 63, Subpart JJJJJ [Boiler Generally Available Control Technologies (GACT)] particulate matter emission limit. During development of the application, assisted Pfizer with review of post combustion technologies to control particulate matter. Technologies included fabric filters, electrostatic precipitators, and wet electrostatic precipitators. Due to lower capital cost, the facility selected fabric filtration. Application included refined air dispersion modeling (AERMOD) for North Carolina toxic air pollutants. The permit to construct and operate was received.
HOVENSA, St. Croix
U.S. Virgin Islands
Reviewed EPA Part B Permits and Compliance Monitoring Permits for technical adequacy and compliance with regulatory requirements. Focused on updating the 20-year-old land farm permit and supporting documents.
McGuire Air Force Base
Reviewed Dynamic Work Plans and the resulting remedial investigation reports for eight operable units at McGuire Air Force Base. The assessment included assessment of vapor intrusion associated with trichloroethylene and benzene plumes.
McClellan Air Force Base Privatization
Performed technical compliance review for permitting a low-level thermal treatment unit and the associated remedial design to allow for re-use of the McClellan Air Force Base.
Department of Energy (DOE) Oak Ridge Reservation
Oak Ridge, TN
Provided design review for the expansion of the Environmental Management Waste Management Facility hazardous waste, Toxic Substances Control Act, and low-level radiological waste landfill cell as well as support for an audit of operations to ensure compliance with EPA-approved governing CERCLA documents serving as the operations permit.
Evaluated the viability of a chemical isolation cap for sediments contaminated with arsenic versus mechanical dredging in support of the United States Environmental Protection Agency (EPA). The scope of work included assessment of long-term exposures, contaminant gradients, cap long-term durability, and associated operation and maintenance. Also assessed the viability of dredging along an existing sheet-pile wall and associated wall stability in support of soil and groundwater remedies already installed.
Navy Activity Puerto Rico
Ceiba, Puerto Rico
Managed the technical support for the review of eight remedial investigation reports and eight corrective measures studies for this facility. Ensured technical consistency amongst the reviews submitted by three different consulting firms supporting the Navy.