The
performance of Air Quality studies; from the air quality chapters of
Environmental Impact Statements to Toxic Screening Analyses, Health Risk
Assessments and long term monitoring studies are among the major services
performed by Environalysis. We use the most recent versions of the EPA approved
dispersion models and data gathering instrumentation. Specific services
include:
Preparation of air quality chapters for NEPA/SEPA Environmental Impact Statements and Environmental
Assessments
Preparation
of Health Risk Assessments
Dispersion
modeling for point and mobile sources - ranging from screening modeling to complex terrain modeling
Ambient air monitoring and indoor air quality sampling
Coordination
with local authorities for Notice of Construction and Permit Applications
Determination
of Conformity for transportation projects
Representative Air Quality Projects
David Evans & Associates Corps of Engineers - Lake
Koocanusa Fugitive Dust
Study Libby, MontanaContact: Lawr Salo (206)
764-3630
A long-term
(2 year) monitoring/modeling study to determine the impacts of fugitive dust
from dry lakebed areas of Lake
Koocanusa.
State-of-the-art TEOM PM10 monitors were operated at 2 locations with
co-located meteorological stations. After 2 years of monitoring the data was
input into a dispersion model to determine the lakebed's contribution to local
PM10 concentrations. The results were presented at annual community meetings.
Puget Sound Regional Council Air Quality Impacts of Transportation Projects Soliciting CMAQ Funding Seattle, WashingtonContact: Nick Roach (206)
464-6843
This project quantified the
air quality impacts by developing emission inventories for 21 transportation
projects applying for Congestion Management Air Quality funds from the federal
government. Projects in Snohomish, King and Pierce counties were examined
including the City of Seattle's
paving of roads in the Duwamish nonattainment area.
The Spokane
Regional Council, Puget Sound Regional
Council, WSDOT-Eastern RegionCAL3QHC Training Workshops (4) Spokane and Seattle, Washington Contact: Glen Miles (509)
625-6370, Nick Roach (206) 464-6843, and Bill Bennett (509) 324-6192
Four
three-day workshops (2 in Seattle, 2 in Spokane) in the use of the EPA air
quality model (Cal3qhc3) whose application is needed to secure state and
federal funding for transportation projects. Over 75 transportation engineers
and air quality modelers attended these sessions. Follow-up problem-solving
assistance included phone consultations and the ongoing publication of a
newsletter, "The CAL3QHC Modeler".
City of Redmond172nd Avenue NE Corridor Study- Air Quality and Noise
ChaptersRedmond, Washington Client: David
Evans & Assoc.-Kirk Harris (425) 519-6500
A study of
the air quality and noise impacts of increasing the vehicle capacity of a
1-mile stretch of a residential arterial: NE 172nd Avenue NE. The
corridor design was intended to improve traffic flow for local residents
without making the avenue a through-route for regional traffic. The challenge
was to provide noise mitigation in a rapidly developing area where noise walls
would be unsuitable and was addressed by recommending a low speed limit and
restricting pass-through travel by truck.
SR169 Maple
Valley Highway Air Quality Conformity Study Client:
Perteet Engineering (425) 252-7200 WSDOT
contact Randy Sandberg (206) 440-4528
An
Air Quality Conformity Study for improvements on the Maple Valley Highway
(SR169). The study analyzed the air quality impacts of increasing the capacity
of SR169. Six intersections were examined of which two, one near the I-405
interchange and the other at 140th
Way SE, were selected for modeling with EPA’s
intersection model: CAL3QHC. The modeling demonstrated that the project was in
compliance with the Clean Air Act Conformity requirements.
Downtown
Pedestrian/BTC Access Improvements Project Bremerton, WA
Client:
Exeltech, Inc. Bernie Chapman (360) 357-8289
An Air Quality Conformity study for a package of
improvements to the flow of ferry traffic in downtown Bremerton. The project’s environmental
documentation included two designs: a surface street design alternative and a
tunnel alternative. The air quality analysis examined the changes in automobile
pollutants of both designs and focused upon the intersections altered by the
project and the potential air quality inside the tunnel during periods of
congested traffic.
NE 15th
+ 150th Air Quality Conformity Study Client: KPG
Inc. Nelson Davis (206) 286-1640 WSDOT
contact John Maas (206) 440-4545
An air quality conformity study for
improvements to the 15th
Avenue NE corridor. The study examined the air
quality impacts of adding a signal to the 15th Ave. NE + NE 150th St.
intersection. The project was found to conform to the Clean Air Act Conformity
requirements.
Representative Noise Study Projects
I-5 Mellen
to Grand Mound Improvements Client:
David Evans & Associates- Riley Atkins (425) 519-6500 WSDOT
contact Jim Laughlin (206) 440-4643
Noise discipline reports for a
multi-phase series of improvements to I-5 between Grand Mound and the Mellen Street
interchange in Centralia.
Phase I (Grand Mound to Harrison
St.) has been completed. Phase 2 starts Spring
2008. Noise measurements were taken at sensitive residential receivers within
500 feet of I-5. The project would create noise impacts at several homes by
design year of 2030, thus walls were modeled but found to acoustically feasible
but financially unreasonable.
SR17
Improvements Client:
David Evans & Associates- Kathryn Beck (425) 519-6500 WSDOT
contact Jim Laughlin (206) 440-4643
A noise discipline report for a project
adding lanes to 15 miles of SR17 between Moses Lake
and Ephrata. Noise measurements were taken at sensitive residential receivers
within 500 feet of SR17. The project would create noise impacts at numerous
homes by design year of 2030, thus walls were modeled and found to acoustically
feasible in three locations.
Washington State Department of Transportation Retrofit Wall Update Project Throughout Washington
State Client: WSDOT WSDOT Contact: Mia Waters (206) 440-4541
This project entailed the
updating of a statewide list of potential noise wall sites along all of the
State highways in Washington.
Existing noise levels were measured with a Type I Sound Level Meter. Peak hour
noise levels were modeled using FHWA’s Traffic Noise Model. Over 75 project
sites were examined and ranked in order of potential benefits to noise-impacted
residential areas.
Seattle Public UtilitiesSolid Waste Utility Supplemental EIS Air Quality and Noise Chapters Seattle, Washington Client: Herrera Environmental Consultants-Art Campbell (206) 441-9080
A study of
the air quality and noise impacts of system-wide changes to the City of Seattle solid waste
trucking system. Air quality impacts are from changes in garbage truck
vehicle-miles and dust control and filter systems for an intermodal solid waste
transfer facility. Noise impacts are from changes in automobile traffic and
truck traffic and the waste handling machinery used on site.
Third-part Review of Noise Study for the expansion of the Port Orchard
Wal-Mart Store Port Orchard, WA Client: Kitsap
County Dept. of Community
Development-Mr. Jeff Smith (360) 337-7022
A review a noise study for a large expansion of an existing Wal-Mart
store. The expansion would add several rooftop HVAC units, ground level
refrigeration compressors-condensers and relocated truck traffic close to a
residential neighborhood. We recommended modifying the mitigation measures
cited in the study supplementing the study’s noise monitoring. We also designed
a long-term noise monitoring plan for the project that will involve the use of
advanced sound level meters.
Third-part Review of Telecommunications Permits for the City of Eugene Eugene, Oregon Client: City of Eugene Department of Planning and Development-Ms. Catherine
Zunno (541) 682-5389
Environalysis
was asked to review all permits for new or modified telecommunication projects
in the City of Eugene for accuracy and completeness in meeting the City’s
requirements for non-ionizing electromagnetic radiation and noise. We review the technical NIER and noise reports
submitted during the permitting process and make recommendations when
necessary.
Fred Hill Materials(1)
Noise Report for the Shine
pit(2)
Noise Report for the Wahl
Addition(3)
the Pit-to-Pier Project Shine, Washington Client: Thorndyke Resources- Dan Baskins (360) 340-1134
Three studies
of the noise impacts of a large sand and gravel operation. The first was an
extensive study of the noise impacts of an existing 1 million TPY sand and gravel operation, the second study was
an analysis of the effects of the excavation activities moving to a new nearby
area. The third determined the noise impacts of building a ship-loading
facility on Hood Canal. In the first two studies simultaneous 24-hour
measurements were taken at 6 locations and the results were compared to the
King County Noise Code. To determine future noise levels when the mine’s
working face is moved the 1/3 octave band noise signatures of the mining
machinery were measured and input in the Environmental Noise Model. The third
study (Pit-to-Pier Project) used the CADNA A noise model. All the studies
indicated that the existing operations did not exceed State or County noise
standards during periods of normal meteorology. In the second study, the
Proposal to relocate the working face was found to generate less noise than the
current operations.
Kenmore Air
Noise study for Elliot
Bay seaplane landing site
Seattle, Washington Client: Kenmore Air-Tim Brooks (425) 486-1257
A noise monitoring project
using 6 Type I Sound Level Meters to quantify noise impacts on downtown
residential condominiums due to the landing and takeoff of Beaver and Otter
seaplanes from Elliot
Bay. Effective mitigation
was proposed involving maintaining an adequate distance from the shoreline.
Noise contour maps were developed using the Integrated Noise Model version 5.1.