HomeMy WebLinkAbout20060720IPC to MVP 10.pdfIDAHO POWER COMPANY
O. BOX 70
BOISE, IDAHO 83707
RECEIVED
200& JUL I 9 PM~: 52An IDACORP Company
IDAHO PUBLIC
UTILITIES COMMISSION
July 19 , 2006
Jean D. Jewell , Secretary
Idaho Public Utilities Commission
472 West Washington Street
P. O. Box 83720
Boise, Idaho 83720-0074
Re:Case No. IPC-06-
Idaho Power Company s First Supplemental Response to the First
Production Request of Mountain View Power, Inc.
Dear Ms. Jewell:
Please find enclosed for filing an original and two (2) copies of Idaho Power
Company s First Supplemental Response to the First Production Request of Mountain
View Power, Inc. regarding the above-described case.
I would appreciate it if you would return a stamped copy of this transmittal letter
to me in the enclosed self-addressed stamped envelope.
Very truly yours
1f~~ (8.
Monica B. Moen
MBM:sh
Enclosures
Telephone (208) 388-2692, Fax (208) 388-6936, E-mail MMoenriYidahopower.com
RECEIVED
200& JUL I 9 PH~: 52
BARTON L. KLINE ISB #1526
MONICA B. MOEN ISB #5734
Idaho Power Company
P. O. Box 70
Boise, Idaho 83707
Telephone: (208) 388-2682
FAX Telephone: (208) 388-6936
IDAHO PUBLIC
UTILITiES COMMISSION
Attorney for Idaho Power Company
Street Address for Express Mail
1221 West Idaho Street
Boise, Idaho 83702
BEFORE THE IDAHO PUBLIC UTILITIES COMMISSION
IN THE MATTER OF THE APPLICATION OF
IDAHO POWER COMPANY FOR A
CERTIFICATE OF PUBLIC CONVENIENCE
AND NECESSITY FOR THE RATE BASING
OF THE EV ANDER ANDREWS POWER
PLANT.
) CASE NO. IPC-06-
IDAHO POWER COMPANY'
FIRST SUPPLEMENTAL
RESPONSE TO THE FIRST
PRODUCTION REQUEST OF
MOUNTAIN VIEW POWER, INC.
COMES NOW, Idaho Power Company ("Idaho Power" or "the Company
and, in response to the First Production Request of Mountain View Power, Inc. to Idaho
Power Company dated June 19 , 2006, herewith submits the following supplemental
information:
IDAHO POWER COMPANY'S FIRST SUPPLEMENTAL RESPONSE TO FIRST PRODUCTION
REQUEST OF MOUNTAIN VIEW POWER, INC. Page
REQUEST NO.1 O. Please provide copies of all correspondence (written
electronic or otherwise) from the Company to the Idaho Department of Environmental
Quality (IDEQ) concerning MVP's minor source permit application filied January 31
2006 with respect to MVP's proposed Gateway power plant.
RESPONSE TO REQUEST NO. 10: No correspondence (written
electronic or otherwise) has been transmitted between the Company and IDEQ
concerning MVP's proposed construction at the Gateway power plant.
The response to this request was prepared by F. Gregory Hall, Principal
Engineer, Idaho Power Company, in consultation with Barton L. Kline , Senior Attorney,
Idaho Power Company.
SUPPLEMENTAL RESPONSE TO REQUEST NO. 10: Please also refer
to the November 2005 study conducted by Tetra Tech EM, Inc. on behalf of Idaho
Power Company and attached hereto as "Response to Request No.1 0.
DATED at Boise, Idaho , this 19th day of July, 2006.
~t.
MONICA B. MOEN
Attorney for Idaho Power Company
IDAHO POWER COMPANY'S FIRST SUPPLEMENTAL RESPONSE TO FIRST PRODUCTION
REQUEST OF MOUNTAIN VIEW POWER, INC. Page 2
CERTIFICATE OF SERVICE
I HEREBY CERTIFY that on this 19th day of July, 2006 , I served a true and
correct copy of the within and foregoing IDAHO POWER COMPANY'S RESPONSE TO
THE FIRST PRODUCTION REQUEST OF MOUNTAIN VIEW POWER, INC. upon the
following named parties by the method indicated below, and addressed to the following:
Commission Staff Hand Delivered
Donovan Walker US. Mail
Deputy Attorney General Overnight Mail
Idaho Public Utilities Commission FAX
472 W. Washington (83702)Email: Donovan.walker(g)puc.idaho.gov
O. Box 83720
Boise, Idaho 83720-0074
Industrial Customers of Idaho Power Hand Delivered
Peter 1. Richardson, Esq.US. Mail
Richardson & O'Leary Overnight Mail
515 N. 27th Street FAX
O. Box 7218 Email: peter(g)richardsonandoleary.com
Boise, Idaho 83702
Don Reading
Ben Johnson Associates Hand Delivered
6070 Hill Road --.1L US. Mail
Boise, Idaho 83702 Overnight Mail
FAX
Email: dreading(g)mindspring.com
Mountain View Power, Inc.Hand Delivered
Ronald L. Williams US. Mail
Williams Bradbury, P.Overnight Mail
O. Box 2128 FAX
Boise, Idaho 83701 Email: ran
(g)
willi amsbradbury.com
Robert D. Looper, President Hand Delivered
Mountain View Power, Inc.US. Mail
1015 W. Hays Street Overnight Mail
Boise, Idaho 83702 FAX
Email: rlooper(g)spellc.com
c8.
Monica B. Moen
CERTIFICATE OF SERVICE, Page
IDAHO POWER COMPANY
CASE NO. IPC-O6-
FIRST PRODUCTION REQUEST
OF MOUNTAIN VIEW POWER
SUPPLEMENTAL RESPONSE TO
REQUEST NO.1 0
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REVIEW OF POTENTIALLY CRITICAL ENVIRONMENTAL
ISSUES FOR PERMITTING ONE OF Two SIMPLE CYCLE
COMBUSTION TURBINES AT ALTERNATIVE SITES
ADA, CANYON, AND ELMORE COUNTIES
I )
TETRA TECH EM INC.
. .
1325AIRMOTIVE WAY, SUITE 200
RENO, NEVADA 89502
November 2005
CONFIDENTIA
III~.
SECTION
IDAHO POWER COMPANY
REVIEW OF POTENTIALLY CRITICAL ENVIRONMENTAL IsSUES
ADA, CANYON, AND ELMORE COUNTIES, IDAHO
CONTENTS
PAGE
EXECUTIVE SUMMARY ...........................,.....................,.......................".....,..........,.,...,......
INTRODUCTION ..............,..................,..........,.....,.....,........................,.............,.,...,....
IDAHO POWER SCREENING-LEVEL TURBINE DISPERSION MODELING
RESULTS ......,............................................................,......................................,.........,,
LAND DEVELOPMENT POLICIES FOR ADA, CANYON, AND ELMORE
COUNTIES, IDAHO............................................,.........................................,...............
ADA COUNTY......................,......,...........,.....................................,.......................... 9
CANYON COUNTY.................."........",................................................................, 3.2
ELMORE COUNTY".,.....,.,........,...........,..........,..................,..............".................. 16
REFERENCES......."..........."........................................,.............,....................,..............,........,
TABLE
FIGURE
TABLES
PAGE
Idaho Power Screening Modeling Natural Gas Turbines................................................. 3
Idaho Power Screening Turbine Modeling Results, Class II Modeling Results
NAAQS Impacts Using 7EA Turbine ............................................................................. 4
Idaho Power Screening Turbine Modeling Results, Class II Modeling Results
NAAQS Impacts Using 501F Turbine.........,............... ........, .............. ........,.. ........ .......... 5
Canyon County 2003 Summary of Pollutant Concentrations ..........................................
1999 Emissions Summary of Criteria Air Pollutants..................................................... ..
FIGURES
PAGE
NOx Spatial Representatives Canyon County Site........................................................... 6
NOx Spatial Representatives Ada County Site................................................................. 7
NOx Spatial Representatives Elmore County Site............................................................ 8
Ada County Site.............................,............,...........".,.............,...,............,........,............
Canyon County Site ....",................................................................................................
Elmore County Site.....",........,.............,............".........,.....,..................."......................
PAGE i
IDAHO POWER COMPANY
REVIEW 0 F POTENTIALLY CRITICAL ENVIRONMENTAL ISSUES
ADA, CANYON, AND ELMORE COUNTIES, IDAHO
EXECUTIVE SUMMARY
Idaho Power Company is developing a plan for constructing a natural gas-fIred simple cycle
combustion turbine to provide additional peaking power to the Idaho electric power grid. Three
sites were chosen as alternatives for installing the gas-fired simple cycle combustion turbine.
The purpose of this study is to review state and local requirements related to permitting issues for
air quality, noise, and land use at three alternative sites in Ada, Canyon, and Elmore Counties in
southern Idaho. The units selected as representing the range of options, included a Westinghouse
501 F and a General Electric 7EA. Manufacturer s specifications were obtained from similar
projects.
The scope of the project includes potential environmental impacts from the additional natural gas
and electric transmission systems (if applicable).
One of the tasks was to perform a screening level air quality impact analysis to ascertain the
likelihood of complying with national and state ambient air quality standards. Tetra Tech EM
Inc. (Tetra Tech) reviewed these sites using publicly available information. The Idaho
Department of Environmental Quality was contacted about potential air quality permitting issues
in each of the three counties. No environmental or special interest groups were contacted.
Without specific lrnow ledge of any proposals, Tetra Tech prepared a review of potential
constraints to permitting that could preclude or significantly delay the project at any of the
proposed sites.
Results of this investigation did not uncover any critical environmental issues that would
significantly delay or prohibit the construction of a natural gas-fITed simple cycle combustion
turbine at any of the three sites. Results of the air quality impact analysis shows that there
should not be any exceedences of the ambient air quality standards
PAGE 1
IDAHO POWER COMPANY
REVIEW OF POTENTIALLY CRITICAL ENVIRONMENTAL IsSUES
ADA, CANYON, AND ELMORE COUNTIES, IDAHO
INTRODUCTION
Idaho Power Company is developing a plan for constructing a natural gas-fired simple cycle
combustion turbine to provide additional peaking power to the Idaho electric power grid. Three
sites were chosen as alternatives for installing the gas-fired simple cycle combustion turbine.
The purpose of this study is to review state and local requirements related to permitting issues for
air quality, noise, and land use at three alternative sites in Ada, Canyon, and Ehnore Counties in
southern Idaho. The units selected as representing the range of options, included a Westinghouse
501 F and a General Electric 7EA. Manufacturer s specifications were obtained from similar
projects.
The scope of the projects included potential environmental impacts from the additional natural
gas and electric transmission systems (as applicable).
Without specific knowledge of any proposals, Tetra Tech EM Inc. (Tetra Tech) prepared a
review of potential constraints to pennitting that could preclude or significantly delay the project
at one of the proposed sites. Tetra Tech reviewed these sites using publicly available
information. The Idaho Department of Environmental Quality was contacted about potential air
quality permitting issues in each of the three counties (Idaho Department of Environmental
Quality, 2005).
IDAHO POWER SCREENING-LEVEL TURBINE DISPERSION MODELING
RESUL TS
Tetra Tech completed the screening-level dispersion modeling for Idaho Power to evaluate
potential criteria pollutant impacts from two turbine models at three different sites in Idaho. The
modeling was completed using the ISCST3 model and included one year of meteorological data
collected at the Boise, Idaho National Weather Service station during 1991. The modeling
included effects from building downwash.
Since specific source parameter and emission information were not available, comparable values
were taken from other projects that used the same turbine models. Table 1 shows the stack
parameter information used for each turbine model. Table 2 shows the model results for the 7EA
at the three potential sites evaluated in the modeling. Table 3 shows the model results for the
501F at the three potential sites. The values in green represent the lowest modeled value for each
pollutant and averaging period at each of the three sites.
The values shown in Tables 2 and 3 represent the highest modeled values ITom the model output
and do not take into account whether the impacts would fall on or off the facility property. All
modeled impacts from the 7EA and 501F are low and any ofthe three sites would be acceptable
should it be selected.
The impacts from the 501F are slightly higher than the 7EA. Nitrogen oxide (NOz) is the only
pollutant that had a modeled impact that exceeded the significant impact level, and only for the
PAGEl
IDAHO POWER COMPANY
REVIEW OF POTENTIALLY CRITICAL ENVIRONMENTAL ISSUES
ADA, CANYON, AND ELMORE COUNTIES, IDAHO
50 IF at the Elmore County site where the value was slightly above the annual significant impact
level. (The "significant impact" level, also known as a de minimus, is the level at which no
review is required under Environmental Protection Agency s (EP A) New Source Review or the
Idaho Department of Environmental Quality) In the case of the Elmore County site with the
501F, the air quality impact for nitrogen oxides is 2.3 micrograms per cubic meter and the
national ambient air quality standard is 100 micrograms per cubic meter.
A spatial representation of the nitrogen oxide impacts for the three sites with the larger
Westinghouse 501 F are shown in Figures 1 through 3.
TABLE 1
IDAHO POWER SCREENING MODELING
NATURAL GAS TURBINES
Hourly Emission Rate (!!Is)
Stack Stack Stack Stack
Source UTM UTM Hei~ht Temp Velocity Diameter
Name X(m)Y(m)(m)(K)(mls)(m)PM1o S02 NOx VOC
7EA Site Suecific 18.810.49.907 069 284 12.220 378
501F Site Specific 18.722.75.1.88 690 193 135 032 378
Notes:
7EA
501F
f!/s
mfs
NOx
PMlO
S02
VOC
UTM
Y(m)
X(m)
General Electric 7EA
Westinghouse 501 F
Carbon monoxide
Gram per second
Meter
Meter per second
Nitrous oxides
Particulate matter w/aerodynamic diameter less than 10 microns
Sulfur dioxide
Volatile organic compound
Universal Transverse Mercator
Coordinates
Coordinates
PAGE 3
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5
IDAHO POWER COMPANY
REVIEW OF POTENTIALLY CRITICAL ENVIRONMENTAL ISSUES
ADA CANYON, AND ELMORE COUNTIES, IDAHO
FIGURE 1
IDAHO POWER, CANYON COUNTY SITE
SPATIAL REPRESENTATION PLOT
ESTIMATED NIJROGEN DIOXIDE CONCENJRATION
4844000
4842000
0.3 uglm3
25 uglm3
2 uglm3
4840000
4838000
4836000
Canyon County
tlrbine location
PAGE 6
4834000
4832000
4830000
524000 526000 528000 530000 532000 534000 536000
VIM Basting (meters)
..d
' .
1818'
4826000
4824000
4822000
4820000
lJ-
bl)
4818000
4816000
4814000
4812000
IDAHO POWER COMPANY
REVIEW OF POTENTIALLY CRITICAL ENVIRONMENTAL ISSUES
ADA, CANYON, AND ELMORE COUNTIES, IDAHO
FIGURE 2
IDAHO POWER, ADA COUNTY SITE
SPATIAL REPRESENTATION PLOT
ESTIMATED NIJROGEN DIOXIDE CONCENTRATION
Ada O:mnty
turbine locallon
.6.
562000 564000 566000 568000 570000 572000 574000
6 uglm3
0.5 uglm3
4 uglm3
0.3 uglm3
0.2 uglm3
UTM Basting (meters)
PAGE 7
IDAHO POWER COMPANY
REVIEW OF POTENTIALLY CRITICAL ENVIRONMENTAL ISSUES
ADA, CANYON, AND ELMORE COUNTIES, IDAHO
4788000
4786000
4784D00
fi'
';; 4782000
4780000
4778000
4776000
4774D00
FIGURE 3
IDAHO POWER, ELMORE COUNTY SITE
SPATIAL REPRESENTATION PLOT
ESTIMATED NI1ROGENDIOXIDE CONCENTRATION
Elmore GolIDly
\,;
~bine location
"s;~;,;
596000 598000 600000 602000 604000 606000 608000 610000
2 uglm3
2 ugfm3
1.8 uglm3
1.6 uglm3
1.4 uglm3
1.2 uglm3
1 uglm3
8 uglm3
6 uglm3
4 ugim3
2 uglm3
U1M Basting (meters)
PAGE 8
. '. ",--...
IDAHO Po WER COMPANY
REVIEW OF POTENTIALLY CRITICAL ENVIRONMENTAL IsSUES
ADA, CANYON, AND ELMORE COUNTIES, IDAHO
LAND DEVELOPMENT POLICIES FOR ADA, CANYON, AND ELMORE
COUNTIES, IDAHO
The following information regarding land development issues was prepared for the development
of future sites. This information is based on potential areas of concern that may be applicable to
the construction of a new facility for Ada, Canyon, and Elmore Counties, Idaho. This section
focuses on land use, noise, air quality, natural resources, cultural and historical resources , and
utility issues as they may apply to the future project(s) for each specific county.
ADA COUNTY
The ADA County site (Figure 4) is located at the base of a hill and adjacent to commercial and
industrial development. There is a single residence within 1 mile of the facility that did not
appear to be occupied. There is 240 kilovolt electric transmission line adjacent to the site that
will significantly reduce additional environmental impacts from construction if there is sufficient
capacity on that line to accommodate the new unit.
FIGURE 4
ADA COUNTY SITE
PAGE 9
IDAHO POWERCOMWANY
REVIEW OF POTENTIALLY CRITICAL ENVIRONMENTAL IsSUES
ADA, CANYON, AND ELMORE COUNTIES, IDAHO
Land Use
The Ada County Comprehensive Plan (or Comprehensive Plan) addresses a number of land use
issues (Ada County Comprehensive Plan Update, 2005. http://www.adaweb.netidepartmentsl
developmentservices/AdaCountyComPfehensive). The applicable policies and goals that may affect
potential development are summarized below.
Support public facilities, utilities, and transmission lines to serve all areas of Ada County.
Require that new development be designed for compatibility with the natural
environment taking into consideration the topography, drainage, and other natural
systems.
Applications for industrial development must conform to the adopted local, state and
federal standards for air emissions; drainage systems; effects on neighboring land uses;
employment characteristics; environmental impacts; fire and public safety; nature and
volume of industrial activity; noise pollution; odor emissions; sewage collection and
treatment; solid waste disposal; streets/roads/transportation; visual impacts; water quality;
and utility services
Lands designated for industrial use may be rezoned when a significant need for the land
use change can be shown that will advance other goals of the Comprehensive Plan.
Encourage commercial facilities at locations where they complement the existing
transportation facilities and adjacent land uses.
Noise
The noise ordnance is principally aimed at air traffic and does not target any other specific
projects. However, this noise limitation may set policy for other industrial activities including
power generation facilities. The limits for airport noise range from 65 to 75 day-night weighted
average noise level.
Air Quality
According to Mr. Bill Rogers at the Idaho Department of Environmental Quality, Ada County is
maintenance area for particulate matter w/aerodynamic diameter less than 10 microns (PMlO) and
carbon monoxide (CO). A maintenance plan indicates the air quality ambient monitoring data
shows a trend toward non-attainment. However, there are cUITently no additional control
requirements or emission offsets that would preclude development of power generations at the
Ada County site.
Idaho air quality is in attainment for CO, Ozone (1 hour), Ozone (8 hours), particulate matter
w/aerodynamic diameter less than 2.5 microns (PMz.s), PMlO, sulfur dioxide (SOz), and lead (Pb)
levels. Although the US. Environmental Protection Agency (EPA) Region 10 web site shows
some non-attainment areas in the eastern Idaho area for CO and PMlO dated 2002, EP A did
review and assessment for attainment and just published the results this year. Apparently the
PAGE 10
IDAHO POWER COMPANY
REVIEW OF POTENTIALLY CRITICAL ENVIRONMENTAL ISSUES
ADA, CANYON, AND ELMORE COUNTIES, IDAHO
, j
Region 10 web site is not fully updated to reflect this change. No air quality summary table was
available in electronic fonnat for ADA County.
Ada County had the second highest number of reported releases of toxic pollutants. The EP A
data show chemicals and electrical equipment had the highest number of releases in Ada County.
Due to the size of the units in this investigation and the limitation of only natural gas as a fuel
these units should not be subject to EP A Toxics Release Index (TRI) reporting.
Natural Resources
The following summarizes the goal statement and policies related to natural resources from
the Ada County Comprehensive Plan:
Retain the existing living, working, and natural environment by ensuring that land, air
water, and wildlife resources are properly managed.
Support infill development with a variety ofland uses and appropriate zoning
designations to minimize development encroaching into natural resource areas.
Buffer designated natural resource areas from more intensive urban uses with compatible
transitional land uses.
Establish density and development standards designed to protect existing terrain, steep
slopes, benches, floodways, habitat areas, and ridge lines.
Protect and preserve the natural beauty and habitat of the Snake River and land abutting
the river and canyon.
Protect and preserve the natural beauty and habitat of the Boise River and the black
cottonwood forest and land abutting the river.
Locate development away from designated wildlife habitat areas.
Connect wildlife habitat areas by migration/movement corridors.
Encourage preservation of existing healthy trees and rare plants throughout the County.
Require all development to comply with applicable air quality standards.
Cultural and Historic Resources
The following summarizes the goal statement and policies related to cultural and historic
resources from the Ada County Comprehensive Plan (Ada County Comprehensive Plan
Update, 2005).
To identify, protect, enhance, and perpetuate sites and structures that are significant
components ofthe County's cultural, archeological, historical, agricultural, and
architectural resources.
Encourage the rehabilitation and retention of existing historic structures in Ada County.
PAGE 11
IDAHO PO~R COMPANY
REVIEW OF POTENTIALLY CRITICAL ENVIRONMENTAL IsSUES
ADA, CANYON, AND ELMORE COUNTIES, IDAHO
Establish a historic overlay zoning district with flexible development standards to allow
convenient rehabilitation and multiple use of historic buildings and special sites within
the County.
Participate in the Idaho State Historical Society s Certified Local Government Program
for historic preservation and improve interagency communication with all cities in the
County and other community organizations regarding historic preservation.
Support the Ada County Historic Preservation Council's role in identifying and
inventorying all areas and sites that should be recognized and preserved.
Require review of the exterior modifications to designated historic structures by the
Historic Preservation Council to retain the historic character of such structures.
Review proposed developments to determine if they would destroy or impact any unique
geological or historical site and what steps may be needed to avoid or reduce negative
impacts to the site.
Consider incentives such as clustering and density bonuses for development that
preserves historically or culturally significant sites or buildings.
Encourage, enhance, and celebrate Ada County s ethnic and cultural diversity and
heritage.
Encourage activities and events that will celebrate the cultural heritage of Ada County.
Encourage international cultural exchanges among individuals, organizations, and
communities.
Encourage cultural awareness through the creation and public exhibition of visual and
performing arts.
Assist community organizations in developing a sufficient variety of cultural facilities
that meet the needs of all age groups and interests.
Energy Services and Public Utility Facilities
The following summarizes the goal statement and policies for energy services from the Ada
County Comprehensive Plan.
Coordinate with providers to develop plans for energy services and public utility facilities
for the long-term energy and utility needs of Ada County.
Promote the development of energy services and public utility facilities to meet public
needs.
Encourage the enhancement of the capacity and reliability of regional energy resources.
Encourage the multiple-use of utility con-idors by utility providers.
Develop a future acquisitions map for inclusion into the Comprehensive Plan that
identifies existing and future utility facilities and corridors.
PAGE 12
181 IDAHO POWER COMPANY
REVIEW OF POTENTIALLY CRITICAL ENVIRONMENTAL ISSUES
ADA, CANYON, AND ELMORE COUNTIES, IDAHO
CANYON COUNTY
The Canyon County site (Figure 5) is located at an existing site approximately 20 miles west of
Boise adjacent to a sand and gravel operation and the Boise River. There is a new housing
development (approximately 20 homes) within 1 mile of the site. This site has a good buffer
ITom trees and there were not any obvious land use issues. The adjacent gravel operation may
have an adverse affect on the modeling result when combined with the impact ITom a future
generating unit. However, the site was previously permitted for a larger combined cycle unit and
presumably would have included the gravel operation at that time. The emissions for the
adjacent gravel operation were not included in the modeling contained in this report. There is an
existing electric transmission line, and therefore visual impacts and potential natural resource
impacts will be significantly less.
FIGURE 5
CANYON COUNTY SITE
Land Use
Upon reviewing the Canyon County Comprehensive Plan (Canyon County 2010 Comprehensive
Plan. October 20, 2005. http://www.canyoncounty.org/dsdlCompPlan.htm) and zoning
ordinances there does not appear to be any specific prohibition against power generation. While
we did not review the floodplain limits for the Boise River, a preliminary survey may be required
to confinn that site is not within the floodplain.
PAGE 13
IDAHO POWER COMPANY
REVIEW OF POTENTIALLY CRITICAL ENVIRONMENTAL IsSUES
ADA, CANYON, AND ELMORE COUNTIES, IDAHO
Noise
The Canyon County Zoning ordinance states that "unreasonable dust, smoke, gas, fumes, noise
vibration, or odor beyond the boundaries" of the facility are not acceptable. The only other
requirement for noise control would appear to be in Idaho Code 52-101 where an evaluation of
the existing and projected noise pollution in the immediate and sUlTounding area is required.
Air Quality
Canyon County air quality is in attainment for all criteria pollutants. Canyon County has
substantial residential growth as well as growth in the small to large industrial sector in the
county. According to Mr. Bill Rogers at the Idaho Department of Environmental Quality,Canyon County might have to be considered for an air quality maintenance plan as a result of
industrial growth. An air quality maintenance plan is required by the US EP A when an area that
was previously designated as non-attainment for a particular criteria air pollutant and has been
re-designated as attainment. The state can also develop a maintenance plan for an area to
prevent it from becoming non-attainment as a result of growth. There are no CUlTent
requirements that would preclude power generation at the Canyon County site.
Table 4 summarizes the highest concentration of criteria pollutants and the number of
exceedences for 2003. Table 5 summarizes emissions in Canyon County taken in 1999.
Idaho air quality is in attainment for CO, Ozone (1 hour), Ozone (8 hours), PMZ.5, PMlO, SOz,
and Pb levels (EP A 2005L Although the EP A Region 10 web site shows some non attainment
areas in the eastern Idaho area for CO and PMlO dated 2002, EP A did a review and assessment
for attainment and just published the results this year. Apparently the Region 10 site is not fully
updated.
TABLE 4
CANYON COUNTY 2003 SUMMARY OF POLLUTANT CONCENTRATIONS
Second
Highest Highest Number Stations
NAAQS Recorded Recorded of NAAQS Monitoring
Pollutant Standard Concentration Concentration Exceedances Pollutant
Carbon monoxide
hour average 35ppm 8ppm 6ppm
hour average 9ppm 7 ppm 5 ppm
Ozone
hour average 12 ppm 08ppm 08 ppm
hour average 08 ppm 07ppm 07ppm
PM-
24-hour average 65 uglm 33 uglm 27 uglm
Annual arithmetic mean 15 uglm 9 uglm 5 uglm
PM-
24-hour average 150 uglm 176 uglm 87 uglm
Annual arithmetic mean 50uglm 27 uglm 0 uglm
Source: Canyon County. ZOOS. http://www.canyoncounty.org/dsdlCompPlan/ZOlO%ZOComp%ZOPlan%ZO-%ZOOct%ZOZO05.pdf.
PAGE 14
IDAHO PO~R COMW ANY
REVIEW OF POTENTIALLY CRITICAL ENVIRONMENTAL ISSUES
ADA, CANYON, AND ELMORE COUNTIES, IDAHO
TABLE 4 (Continued)
CANYON COUNTY 2003 SUMMARY OF POLLUTANT CONCENTRATIONS
Notes:
ug/m
NAAQS
PM1O
PM2.5
ppm
microgram per cubic meter
Nevada Ambient Air Quality Standards
Particulate matter w/aerodynamic diameter less than 10 microns
Particulate matter w/aerodynamic diameter less than 25 microns
Part per million
TABLE 5
1999 EMISSIONS SUMMARY OF CRITERIA AIR POLLUTANTS
(Expressed in tons of pollutant emitted)
Carbon
monoxide
Nitrol!:
oxides PM-PM-
Sulfur
dioxide
Volatile
l!:anic
com ounds
obileSources 36.365 6.820 4.862 29.618 513
ea Sources 6.304 1.434 2.274 8.361 619
oint Sources 32 1.133 1.037 3.575 9461 sources 42 702 9 388 8 173 41 554 2 078
Source: Canyon County. 2005. http://www.canyoncounty.org/dsd/CompPlan/2010%20Comp%20Plan%20-%20Oct%202005.pdf
623
264
889
Notes:
PM2.5
PMlO
Particulate matter w/aerodynamic diameter less than 2.5 microns
Particulate matter w/aerodynamic diameter less than 10 microns
Canyon County had the nighest number of reported releases of toxic pollutants, followed by Ada
County. The EP A data show food ( agriculture) had the highest releases in Canyon County. The
dominant chemicals were ammonia and nitrates. Mr. Rogers indicated that housing and
commercial development are replacing agriculture. This change would reduce the levels of
ammonia and nitrates. Due to the size of the units in this investigation and the limitation of only
natural gas as a fuel, these units should not be subject to TRI reporting.
Natural Resources
Specific infonnation on natural resources was not available. However, due to the proximity of
the Boise River and riparian habitat there may be issues related to nesting for the birds in the
area that will need to be addressed prior to and during construction.
Cultural and Historic Resources Goal Statement and Policies
No specific infonnation available on cultural or historic issues were available on the Canyon
County web site
Energy Services and Public Utility Facilities Goal Statement and Policies
No specific infonnation available on the Canyon County web site
PAGE 15
IDAHO POWER COMPANY
REVIEW OF POTENTIALLY CRITICAL ENVIRONMENTAL ISSUES
ADA, CANYON, AND ELMORE COUNTIES, IDAHO
ELMORE COUNTY
The Elmore County site (Figure 6) is located at the existing Evander Andrews Complex that
contains two smaller Westinghouse simple cycle units. The area has a good buffer and does not
appear to have any current conflicting land use. Surrounding land use includes a gravel
operation, a highway maintenance facility, and agriculture. If the existing natural gas and
electric transmission are adequate then the issues related to environmental clearances will be
dramatically less.
Under existing Idaho Administrative Procedures Act (IDAP A) and the federal New Source
Review programs, an additional simple cycle unit can be added as a "synthetic minor" source if
the emission of any criteria pollutant is less than 250 tons per year.
FIGURE 6
ELMORE COUNTY SITE
Land Use
The proposed site in Elmore County is outside the city limits of Mountain Home and therefore
would only be subject to Elmore County requirements. A variance for structures over 75 feet
will be required.
PAGE 16
IDAHO POWER COMPANY
REVIEW OF POTENTIALLY CRITICAL ENVIRONMENTAL ISSUES
ADA, CANYON, AND ELMORE COUNTIES, IDAHO
Noise
The only requirement for noise control is found in Idaho, Code 52-101. An evaluation of the
existing and projected noise pollution in the immediate and surrounding area is required.
Air Quality
Elmore County air quality is in attainment for all criteria pollutants and there are no significant
permitting issues according to Mr. Bill Rogers at the Idaho Department of Environmental
Quality.
Idaho air quality is in attainment for CO, Ozone (1 hour), Ozone (8 hours), PMz.s, PMlO, SOl,
and Pb levels (EP A 2005). Although the EP A Region 10 web site shows some non-attainment
areas in the eastern Idaho area for CO and PMlO dated 2002, EP A did a review and assessment
for attainment and just published the results this year. Apparently the Region 10 site is not fully
updated.
Elmore County did not have any reported data for pollutants reported under TRI reporting
requirements.
Natural Resources
No specific is information available
Cultural and Historic Resources Goal Statement and Policies
No specific information available
Energy Services and Public Utility Facilities Goal Statement and Policies
No specific information is available. Information was obtained from public conunents on
construction of a coal-fIred energy plant in the Glenns Ferry Area (September 2004). A number
of questions were raised about the project at that time.
1. What is the number of acre-feet of water that will be required to run the plant was asked
during the legislative session.
2. A question was asked regarding the discussions with citizens and businesses that will be
down wind from the coal burning power plant.
3. A doctor in Jerome was consulted by the legislature regarding clean coal technologies
and down wind emissions.
4. A couple of questions were asked about the location of the plant in proximity to the coal
load stations and if the coal that was going to be used would be local or brought in from
other surrounding areas.
PAGE 17
IDAHO POWER COMPANY
REVIEW OF POTENTIALLY CRITICAL ENVIRONMENTAL ISSUES
ADA, CANYON, AND ELMORE COUNTffiS, IDAHO
REFERENCES
Ada County Comprehensive Plan. 2005. Ada County Comprehensive Plan Update. On-Line
Address: http://www.adaweb.net/departments/ developmentservices/ AdaCountyComprehensi ve
Canyon County Comprehensive Plan. 2005. "2010 Comprehensive Plan." October 20 2005.
On-Line Address: http://www.canyoncounty.org/dsd/CompPlanl201 0%20Comp%20Plan%20-
%200ct%202005. pdf
Idaho Department of Environmental Quality (IDEQ). 2005. On-Line Address:
http://www.deq.state.id.us/air/prog issues.cfm
IDEQ. 2005. Personal communication with Mr. Bill Rogers at the IDEQ regarding Ada County
policy on particulate matter data collection. October 17 2005.
US Environmental Protection Agency. 2005. Tetra Tech checked the Toxic Release Inventory
releases for the three counties. On-line Address: http://www.epa.gov/triexplorer or
http://www.epa.gov/cgi-
binibroker?view=USST&trilib=TRIQl&S011= VIEW &s011 fmt=l&state=All+states&county=
All+counties&chemical= ALL &industry=ALL&yeat=2003&tab rpt=l&f1d=RE TOLBY &ma
pit=l& service=oiaa& Pfogram=xp tri.sasmacr.tristart.rnacro
s. Environmental Protection Agency Region 10. 2005. "Air Quality Attainment." On-Line
Address:
http://yosernite.epa.gov/RIO/ AIRP AGE.NSF/webpage/Boise+PMl 0+ Attainment
(http://www.epa.gov/ebtpages/airairqualityattainment.html
PAGE 18