Burlington, MA, United States
Burlington, MA, United States

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Devita P.M.,Harris Miller Miller and Hanson Inc. | Barrett S.,Harris Miller Miller and Hanson Inc.
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA | Year: 2012

Airports are developing solar projects to generate clean energy and provide alternative revenue and energy cost savings. While many projects have been operating for multiple years without negative consequences, impacts have been observed requiring careful investigation of appropriate siting considerations. Airport sponsors proposing to host solar energy projects must submit information to the Federal Aviation Administration (FAA) to demonstrate that projects are compatible with airspace safety. As part of an Airspace Review, airport sponsors should assess airspace penetration, reflectivity, and communications systems interference for all airport solar projects. In response to the need for a glare assessment tool for airports, HMMH has developed a model to assess potential glare impacts from proposed solar projects on sensitive airport receptors. The model was successfully applied for proposed solar projects at Tucson International Airport and at Newark Liberty International Airport to support the FAA 7460 Airspace Safety Review. The model results showed there would be no glare impact on the air traffic control tower and potential impacts on aircraft were estimated to be brief depending on the runway orientation. This is an abstract of a paper presented at the 106th AWMA Annual Conference and Exhibition (Chicago, IL 6/25-28/2013).

Anderson G.S.,Grant Anderson Consulting | Rapoza A.S.,John lpe National Transportation System Center | Fleming G.G.,John lpe National Transportation System Center | Miller N.P.,Harris Miller Miller and Hanson Inc.
Noise Control Engineering Journal | Year: 2011

An analysis of visitor survey responses and concurrent noise exposure was performed using data from ten sites in four scenic U. S. National Parks. Data collection was structured to learn the effects of air-tour aircraft noise and high-altitude jet noise on the experience of park visitors at scenic overlooks and on short hikes. The analysis utilized multilevel logistic regression and resulted in six doseresponse relations: two responses (annoyance and interference with natural quiet), paired with three response dichotomizations (slightly or more, moderately or more, and very or more). Each of those six relations retained the same set of regression predictors. Individual-visitor Leq from all aircraft (averaged over the visitor duration at the site) proved to be the most reliable/accurate predictor of all noise dose metrics tested. The relation with visitor Leq was significantly strengthened by inclusion of three additional dose-related predictors: the energy-percentage due to tour helicopters for each visitor, the same due to fixed-wing tour aircraft, and the interaction of these two percentages. In addition, the relation was also strengthened by inclusion of the following context variables: Scenic overlook or short hike, natural quiet very important (or not) to that visitor, visitor group includes only adults (or not), and first-time visit at that site (or not). For a given noise exposure, visitors expressed more negative response regarding interference with natural quiet than regarding annoyance. In addition, visitor response to a given dose of air-tour noise was less severe when there were low-to-moderate levels of high-altitude jet noise present. © 2011 Institute of Noise Control Engineering.

Barrett S.B.,Harris Miller Miller and Hanson Inc.
Marine Technology Society Journal | Year: 2013

Marine hydrokinetic (MHK) energy projects, those generating power from the tides and waves, are subject to a comprehensive licensing and permitting process. In order to comply with federal, state, and local laws and regulations, project proponents must study the proposed development site to fully understand existing conditions and disclose potential project impacts. The Muskeget Channel Tidal Energy Project proposed by the town of Edgartown in partnership with the University of Massachusetts presents an interesting case study of how an MHK project obtains regulatory approvals. While other studies have reviewed the regulatory process of energy projects, the case of Muskeget is unique because (1) the applicant is a municipality, (2) it is proposing to obtain a license from the Federal Energy Regulatory Commission under its pilot license program, (3) the project is being evaluated by Massachusetts' agencies under the Massachusetts Ocean Plan, (4) it includes both a commercial energy generation project and a research test facility for the long-term testing of MHK technologies, and (5) the project is being led by a consortiumof public partners supported largely by the scientific institutions. The objective of this paper is to highlight the multidisciplinary character of this type of development and to illustrate the advanced level of complexity associated with the Muskeget Channel Project because of its ground-breaking technology and oceanic location, which challenges the existing knowledge base in science, engineering, and law.

Menge C.,Harris Miller Miller and Hanson Inc.
41st International Congress and Exposition on Noise Control Engineering 2012, INTER-NOISE 2012 | Year: 2012

The paper discusses a study to predict, assess and abate noise from a proposed oval automotive race track in an urban part of Columbus, Ohio. The City of Columbus wished to redevelop the recently abandoned minor league baseball park in a section of the city near interstate highways, residential communities, cemeteries and some industrial activity. A well-respected local developer proposed the concept of an automotive education center and test track that would include weekend racing. The nearest residential properties are located within 300 to 500 m of the proposed track, but many of the closest are currently exposed to significant existing noise levels from interstate highway traffic. The types of vehicles planned for racing will not generate noise levels of the magnitude of IndyCar or NASCAR vehicles, nevertheless, very significant noise abatement measures are required to reduce noise levels sufficiently to comply with the City's daytime limit of 65 dBA (one-hour Leq). The paper discusses the nature of the proposed racing, the noise modeling and abatement approach, and projected noise levels in the surrounding community during worst-case race events. The proposed facility has received all necessary city agency approvals, and will be constructed during 2012-13.

Miller N.P.,Harris Miller Miller and Hanson Inc.
41st International Congress and Exposition on Noise Control Engineering 2012, INTER-NOISE 2012 | Year: 2012

The World Health Organization, WHO, has proposed "Night Noise Guidelines for Europe" which it recommends in terms of Lnight (11 p.m. to 7 a.m.). The target recommended is Lnight,outside of 40 dB with an interim target of 55 dB. Sleep disturbance, however, is acknowledged to be a reaction to single events. Hence, any single value of Lnight can be a result of many combinations of single event levels and hence could result in different degrees of sleep disturbance. This paper uses measured values of indoor night time Sound Exposure Levels produced by aircraft overflights, applies the methods of ANSI Standard S12.9-2008, Part 6, "Methods for Estimation of Awakenings Associated with Outdoor Noise Events Heard in Homes," and compares the resulting probabilities of awakening with the associated computed Lnight values. The author finds some correlation of Lnight with the probability of awakening and ponders the selection of a quantitative sleep disturbance guideline.

Miller N.P.,Harris Miller Miller and Hanson Inc.
41st International Congress and Exposition on Noise Control Engineering 2012, INTER-NOISE 2012 | Year: 2012

Mentoring means sharing wisdom. It requires two roles, the sender and the receiver, and age and experience do not necessarily determine who is in which role. We can gain insights from any of the people we talk to or work with. For mentoring to be effective, both roles need to listen carefully and be fully engaged in the discussion. Mentoring can occur in all types of interactions, from the exchange of a few brief comments, to an extensive discussion. Effective mentoring may require follow-up: "I was thinking about what you said yesterday..." or "Here's an alternative approach that occurred to me." Follow-up is especially valuable when the topic is complex and time is required for reflection. Mentoring often happens and neither role knows immediately that it has occurred. This paper expands on these thoughts with some personal examples from the author's professional career.

Mentzer R.,Harris Miller Miller and Hanson Inc.
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA | Year: 2014

Performance Based Navigation (PBN) provides airports and airlines a new opportunity to reduce noise and emissions but in some cases there is a tradeoff where it may increase these levels. PBN implementation and the effects evaluated at three different levels of scale, one a departure procedure from a runway at a commercial airport, second PBN procedures implemented for both arrivals and departures at a commercial airport,t and procedures proposed for a Metroplex which encompasses two major airports (Boston Logan International Airport and Nashville International Airport) and several other airports were studied. Modeling techniques, graphical displays, and results from each of the projects were presented. This is an abstract of a paper presented at the AWMA's 107th Annual Conference & Exhibition (Long Beach, CA 6/24-27/2014).

Johnson T.M.,Harris Miller Miller and Hanson Inc. | Towers D.A.,Harris Miller Miller and Hanson Inc.
41st International Congress and Exposition on Noise Control Engineering 2012, INTER-NOISE 2012 | Year: 2012

A noise impact assessment conducted for the proposed Denver RTD North Metro commuter rail project illustrated the importance of accurate vehicle throttle setting information. During the early phase of the analysis, trains with diesel multiple unit (DMU) vehicles were evaluated. The U.S. Federal Transit Administration (FTA) detailed noise analysis methodology prescribes an adjustment of up to +6 dB for diesel-powered vehicles operating at higher throttle settings, which can have a significant effect on the assessment results. For the North Metro analysis, detailed speed and throttle setting profiles along the corridor were developed by vehicle engineers. However, such information is often not available for commuter rail environmental studies so that conservative assumptions must be made. FTA recommends that if throttle setting data are not available then the highest setting should be assumed, resulting in a +6 dB adjustment to the noise projections over the entire rail corridor. If the speed profile for the corridor is available, another approach is to assume that the vehicles will operate at the highest throttle setting only where accelerating. This paper illustrates the importance of obtaining accurate throttle setting profiles for rail transit noise impact assessments by comparing the analysis results with different throttle setting assumptions.

Towers D.A.,Harris Miller Miller and Hanson Inc.
Notes on Numerical Fluid Mechanics and Multidisciplinary Design | Year: 2012

This paper presents the results of field tests performed to evaluate the ground-borne vibration reduction properties of tire derived aggregate (shredded tires, also known as TDA) as installed beneath ballast-and-tie track on the Denver Regional Transit District (RTD) Southeast Corridor (T-REX) Light Rail Transit (LRT) line in Denver, CO (USA). The vibration tests were carried out at four (4) locations where TDA has been installed beneath the tracks as well as at one control site without TDA underlayment. At each of the sites, ground-borne vibration measurements were made during multiple operations of a dedicated two-car train at three different speeds. In addition, impact tests were conducted to determine the local vibration propagation characteristics of the ground in an effort to normalize the train vibration data for the effects of local geology. A comparison of the test results at the TDA sites with the results at the control site provided a measure of the TDA vibration reduction. The results of the study indicate that, on average, the TDA underlayment at RTD provides a ground-borne vibration reduction of about 3 dB in the one-third octave frequency bands centered at 25 Hz and 31.5 Hz and reductions of 8 to 14 dB at frequencies between 40 Hz and 160 Hz. These results are similar to those obtained from pre-operation vibration tests at the T-REX corridor and to those obtained from recent TDA vibration tests conducted at the Santa Clara Valley Transportation Authority (VTA) light rail system in San Jose, CA (USA). Compared to other types of vibration mitigation measures tested at the San Francisco, CA (USA) Muni light rail system, the vibration reduction performance of the TDA treatment at RTD was found to be equal or superior to that of a ballast mat and not as effective as a floating slab track installation. © 2012 Springer.

Harris Miller Miller and Hanson Inc. | Date: 2011-04-19

Chemically-activated light sticks. Aerosol dispensers not for medical use.

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