Archive for the ‘Uncategorized’ Category

Happy America Recycles Day 2014!

Thursday, November 13th, 2014

by Christopher Menge

recycling logo with the world

In honor of today being America Recycles Day, I put together the following tips to assist with your recycling efforts:

  1. Put your recycling bins next to your trash or near your kitchen.
  2. Remind your family members with “Can you Recycle that?” signs on your trash bins.
  3. Your cereal bags aren’t really “dirty.” Just shake them out or rinse them and then recycle! Recycle the boxes as paper, of course.
  4. Don’t throw away that greasy food container! You don’t need lots of energy-hungry hot water to recycle your greasy plastic take-out food container. Just put in a couple drops of dish soap, and with a sponge, some cold water and 15 seconds of scrubbing, you’ll have a clean container ready for the bin!
  5. Make 90% of those pizza boxes recyclable! Just use your sharp box cutter knife to cut out the greasy spot, and the rest of the box can go in the recycle bin.
  6. Quickly dress up your glass bottles for clean recycling. Just cut off the metal or plastic capsules and rings at the tops of the bottles, and put those pieces in the proper stream.

For more information on America Recycles Day, see http://americarecyclesday.org.

Happy Recycling!

Beaming with Pride!!!

Friday, October 31st, 2014
by Diana WasiukHMMH led the environmental analysis for THREE (3) of the successful NextGen implementation projects highlighted by FAA administrator Michael Huerta in his speech to the Aero Club of Washington this month. The three Performance Based Navigation (PBN) projects are the Seattle Greener Skies and the Houston and North Texas Optimization of Airspace & Procedures in the Metroplex (OAPM) projects. Yours truly managed one of the OAPM NEPA projects and contributed to a report on NextGen priorities sent to Congress by the FAA last week (also mentioned by the Administrator).

To read the transcript of Administrator Huerta’s speech see:
https://www.faa.gov/news/speeches/news_story.cfm?newsId=17554.

For more on work performed by HMMH staff in support of NextGen implementation see our website and the OAPM environmental website at http://oapmenvironmental.com.

TRB Releases HMMH-Authored ACRP Document 19: Integrated Noise Model Accuracy for General Aviation Aircraft

Wednesday, October 29th, 2014

by Nicholas P. Miller

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The Transportation Research Board (TRB) recently released ACRP Document 19: Integrated Noise Model Accuracy for General Aviation Aircraft, the result of research conducted by a team of consultants led by HMMH. HMMH was retained to conduct this research project to determine the cause and recommend changes to the Integrated Noise Model (INM), which currently incorrectly computes the noise created by many of the General Aviation Jets. The study compared INM produced sound exposure levels and climb profiles with measured sound exposure levels and radar reported climb profiles. HMMH found that the INM assumed all aircraft used maximum power for takeoff, while in practice, pilots used a “derated” thrust to preserve engine life, creating lower takeoff altitudes, and generally lower levels than the INM computed. HMMH developed a method that would use the INM modeling in a realistic manner, duplicating the procedures used by pilots and are in communication with FAA to assist if possible in correcting the INM modeling. In the future, modeling would be more accurate, noise exposures realistic, and better decisions will be made about land use and aircraft noise around airports where General Aviation jets operate.

TRB Releases HMMH-Authored NCHRP Report 791 – Supplemental Guidance on the Application of FHWA’s Traffic Noise Model (TNM)

Tuesday, October 21st, 2014

by Christopher Menge

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Harris Miller Miller & Hanson Inc. (HMMH) is pleased to announce the release of TRB’s NCHRP Report 791 – Supplemental Guidance on the Application of FHWA’s Traffic Noise Model (TNM), the final product of NCHRP Project 25-34, led by HMMH and supported by a team of consultants.

Noise is an important environmental concern for highway planners and designers, and through 2010, state highway agencies have spent $5.4 billion to abate the noise generated by federally-aided highway projects. Transportation agencies assess different aspects of highway noise to determine or predict community impacts during transportation planning, although procedures have varied by program and agency. The Federal Highway Administration (FHWA)’s Transportation Noise Model (TNM) is a computer program used for predicting noise levels and their impacts in the vicinity of highways. The TNM was developed in the 1990’s by a team led by HMMH under contract to the FHWA. The FHWA has provided substantial guidance for the routine application of the TNM; however, scenarios still exist for which there remains limited or no technical guidance.

Under NCHRP Project 25-34, HMMH was asked to investigate sixteen different research topic areas to identify best practices and provide significant guidance on applying TNM to accurately, consistently, and efficiently model traffic-generated noise in a variety of settings that has not been previously addressed by TNM. The objective of NCHRP 25-34 was to supplement existing guidance on applying the TNM by identifying best practices to model structure reflected noise; bridge expansion joints; signalized interchanges; intersections; area sources (e.g., weigh stations, park and ride lots, toll facilities, and service plazas); median barriers; roundabouts; and tunnel openings. The research determines the sensitivity and accuracy of methods to model multi-lane highways, rows of buildings, topography, ground zones, and tree zones, and identifies best practices for input parameters. The research also synthesizes the state of practice for analyzing the effects of wind and temperature gradients on sound propagation.

The results of NCHRP Project 25-34 are intended for use by experienced analysts, modelers, and designers. Report 791 will be of immediate use to experienced users of TNM by helping them to improve the accuracy and precision of their modeling results and inform decision-making related to the design of noise abatement measures.

FAA Announces the Release of AEDT 2b

Thursday, September 11th, 2014

by Robert C. Mentzer Jr.

The FAA announced on September 8, 2014 that the Aviation Environmental Design Tool version 2b (AEDT 2b)a next generation noise and emission model designed for airports, will be released on May 29th, 2015.  The upcoming version is expected to replace the FAA’s INM and EDMS models which have been used separately for noise and emissions modeling for several decades.  AEDT 2b will combine these two models along with the latest airport and aircraft data to provide airports and consultants a tool to develop noise, emission, and fuel burn results.  One set of data inputs (airfield, aircraft operations, etc.) will allow the user to develop results for all three categories and for different phases of flight.  This will also result in the user being able to understand the consequences of various changes at an airport from one tool.  AEDT 2areleased in 2013 to replace NIRS, is currently available for regional and larger scale analysis such as air traffic redesign studies.