Data Documentation for Mapping and Screening Criteria for
Renewable Energy Generation Potential on EPA and State Tracked Sites
RE-Powering America's Land Initiative
Updated August 2015

Contents

Overview	

Renewable Energy Technologies Evaluated

Methodology	

Data Considerations	

Datasets	

Contact Information	

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Overview

The U.S. Environmental Protection Agency (EPA) Office of Solid Waste and Emergency Response (OSWER)
Center for Program Analysis (CPA) initiated the RE-Powering America's Land Initiative to demonstrate the
enormous potential that contaminated lands, landfills, and mine sites provide for developing renewable energy
in the United States. EPA developed national level site screening criteria in partnership with the U.S.

Department of Energy (DOE) National Renewable Energy Laboratory (NREL) for wind, solar, biomass, and
geothermal facilities. While the screening criteria demonstrate the potential to reuse contaminated land for
renewable energy facilities, the criteria and data are neither designed to identify the best sites for developing
renewable energy nor all-inclusive. Therefore, more detailed, site-specific analysis is necessary to identify or
prioritize the best sites for developing renewable energy facilities based on the technical and economic potential.

Please note that these sites were only pre-screened for renewable energy potential. The sites were not evaluated
for land use constraints or current on the ground conditions. Additional research and site-specific analysis are
needed to verify viability for renewable energy potential at a given site.

The federal- and state-tracked sites included in this screening represent a subset of nationwide contaminated
lands, landfills, and mine sites. RE-Powering screened sites currently tracked through EPA remediation and
grant programs, as well as sites tracked by 11 state agencies. Additional sites are tracked at the state and local
level.

Renewable Energy Technologies Evaluated

The following renewable energy technologies were evaluated for this analysis. They represent the most wide-
spread types of renewable energy facilities being used today. This is not an inclusive list of all renewable energy
technologies; new technologies continue to be developed while established technologies are refined. For
information on how each renewable energy type was evaluated, refer to the Screening Criteria section in the
Methodology section below.

Solar technologies generate electricity from the sun's energy. The two types of solar technologies evaluated—
photovoltaic and concentrating solar power—are described below.

Solar resource is typically characterized by the amount of solar energy striking a panel tilted at latitude over a
given area and reported as a daily average. Solar radiation is measured in kilowatt-hours per square meter per
day (kWh/m2/day).

Solar

For more information on solar technologies, visit: www.nrel.gov/learning/re solar.html.


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Photovoltaic (PV): Converts the sun's light energy directly into electricity. PV technology is scalable; the
amount of electricity generated is directly related to the number and efficiency of installed panels. It can
technically be sited anywhere, though the economics may make a project unfeasible in lower resource areas.

Three scales of solar PV energy were evaluated by EPA:

•	Utility scale PV: Uses PV technology at the multi-megawatt scale at sites with the greatest resource and
acreage availability. Electricity generated is typically exported to the grid.

•	Large scale PV: Uses PV technology at the 300-kW scale or greater at sites with the strong resource and
suitable acreage availability. Electricity generated may be exported to the grid or used to offset onsite
electricity consumption, depending on site requirements and market conditions.

•	Off-grid PV: This category represents PV technology being used at a smaller scale, typically to power
the energy needs of a single property when interconnection to the grid may not be feasible. Additional
sites with lower solar resource may be technically and economically feasible depending on the potential
for battery back-up and cost barriers associated with grid interconnection (e.g., due to remote locations).

Economic viability of solar PV projects is tied closely to the policy and regulatory context of the jurisdiction
where the installation would be sited. An additional parameter reflecting policies was included to identify sites
with similar characteristics to the "Utility scale PV" requirements, as follows.

•	PV policy driven: Represents sites that may have development potential due to state policies, including
sites in areas with lower resource availability. It includes states with a renewable portfolio standard
(RPS) or RPS goal that have one or more of the following provisions: a solar set-aside that requires a
certain percentage of the state's electricity be generated from solar resources; a solar multiplier that
gives additional credit for solar projects that contribute toward meeting the RPS requirements; or a
requirement for distributed generation (i.e., electricity generation close to the point of use). These
incentives may help to make PV projects financially viable in areas with lower solar resource
availability.

Utility scale concentrating solar power (CSP): Uses the sun's thermal energy to heat a liquid that drives a
generator to produce electricity. CSP technology is constructed at the megawatt or multi-megawatt scale and
electricity generated is typically exported to the grid.

The following three types of utility scale CSP technologies were evaluated by EPA.

•	Trough system: Collects the sun's thermal energy using long rectangular, curved (U-shaped) mirrors.
The mirrors are tilted toward the sun, focusing sunlight on tubes that run the length of the mirrors. The
reflected sunlight heats a fluid flowing through the tubes. The hot fluid then is used to boil water in a
conventional steam-turbine generator to produce electricity.

•	Power tower system: Uses a large field of flat, sun-tracking mirrors known as heliostats to focus and
concentrate sunlight onto a receiver on the top of a tower. A heat-transfer fluid heated in the receiver is
used to generate steam for a conventional steam-turbine generator to produce electricity. Some power
towers use water/steam as the heat-transfer fluid, others use alternative materials such as molten salt.

•	Stirling engine system: Uses a mirrored dish to direct and concentrate sunlight onto a thermal receiver.
A fluid heated inside the receiver moves pistons and creates mechanical power, which runs the Stirling
engine to produce electricity.

Wind

Wind energy is captured by wind turbines with propeller-like blades mounted on a tower. The force of the wind
causes the rotor to spin and the turning shaft spins a turbine to generate electricity. Wind technology is scalable;
based on site conditions, different turbines designs can be used to meet different electricity needs.

Wind resource is typically characterized by wind speed (meters per second) at a given height. The resource data
are selected based on the turbine size. For example, utility-scale turbines with hub heights ranging from 80-90
meters (m) generally reference the wind resource data at 80 m for initial screening.

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For more information on wind technologies, visit: www.nrel.gov/learning/re wind.html.

The following four scales of wind energy were evaluated by EPA.

•	Utility scale: Uses large turbines at the multi-megawatt scale on sites with the greatest resource and
acreage availability. Electricity generated is typically exported to the grid.

•	Large scale: Represents sites with less acreage than the utility scale wind sites, potentially using smaller
or fewer turbines. Electricity generated may be distributed to the local area through the distribution
system, often serving only adjacent properties.

•	1-2 Turbine sites: Represents sites with limited acreage, potentially using a range of turbine sizes.
Electricity generated may be distributed to the local area through the distribution system, often serving
only adjacent properties.

•	Off-grid: Uses smaller and fewer turbines on a much smaller scale, typically to power the energy needs
of a single property when interconnection to the grid may not be feasible.

Biomass

Biomass energy or "bioenergy" is generated from organic feedstocks. Wood is the largest biomass energy
resource; other sources of biomass include food crops, grassy and woody plants, residues from agriculture or
forestry, and the organic component of municipal and industrial wastes. These feedstocks can be used as a solid
fuel, or converted into liquid or gaseous forms, for the production of electric power, heat, chemicals, or fuels.

For more information on biomass technologies, visit: www .nrel. gov/learning/re biomass .html.

Energy can also be generated by capturing methane and other emissions from landfills. For more information on
EPA's Landfill Methane Outreach Program (LMOP) and landfill gas energy technologies, visit
www.epa.gov/lmop/.

The following three types of biomass production were evaluated by EPA.

•	Biopower facility: Burns biomass resources to produce heat, which is used to boil water for a
conventional steam-turbine generator to produce electricity. Biopower facilities utilize cumulative
biomass resources that can include residues from: forests, primary and secondary mills, and urban wood
waste.

•	Biorefinery facility: Integrates biomass conversion processes and equipment to produce fuels, power,
and chemicals from biomass. The technology utilizes cumulative crop residues that can include residues
from crops or forests, primary and secondary mills, and urban wood waste, cumulatively.

•	Landfill gas energy project: Uses gas that is created as organic solid waste decomposes in a landfill.

This gas consists mostly of methane (the primary component of natural gas) and carbon dioxide. Instead
of allowing landfill gas to escape into the air, it is extracted from landfills using a series of wells and a
blower/flare (or vacuum) system. The landfill gas is directed to a central point where it can be processed
and treated to produce various forms of energy, including electricity, boiler fuel, steam, alternate vehicle
fuel, and pipeline quality gas.

Geothermal

Geothermal facilities use heat stored in the earth to generate electricity. This heat comes from the original
formation of the planet, radioactive decay of minerals, tectonic activity, and solar energy absorbed at the
surface. Geothermal facilities use heat from: hot water or steam reservoirs deep in the earth that are accessed by
drilling; geothermal reservoirs located beneath the earth's surface —typically at depths less than three miles and
mostly located in western states, Alaska, and Hawai'i— and the shallow ground near the Earth's surface that
maintains a relatively constant temperature of 50°-60°F. Geothermal energy is unique, when compared to other
renewable energy resources, in that it is more closely related to mineral or conventional fossil fuel resources,
due to subsurface characterization.

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Geothermal resource is typically characterized by temperature at a given depth, availability of water resources,
and permeability of geologic layers.

For more information on geothermal technologies, visit the DOE Energy Efficiency and Renewable Energy
(EERE) Geothermal Technologies Program at: wwwl .eere.energy.gov/geothermal/ or
www .nrel. gov/learning/re geothermal .html.

The following three types of geothermal technologies were evaluated by EPA.

•	Hydrothermal: Uses steam produced from existing reservoirs of hot water beneath the earth's surface to
power electrical generators. The steam rotates a turbine that activates a generator, which produces the
electricity. Given the limited nature of the available resource data, hydrothermal potential is screened
for in a general sense and not linked to a particular technology or power plant design, as onsite
characterization of the available resource would be required. For the purposes of this screening, the
resource potential is screened based on favorability ratings for geothermal resources, which take
temperature, water resource, and permeability into account, and/or distance to known hydrothermal
sites. Two typical types of geothermal power plants are described below for reference.

o Flash Steam: Uses geothermal reservoirs of water with very high temperatures that flow up
through wells in the ground under its own pressure. As it flows upward, the pressure decreases
and some of the hot water boils into steam. The steam is then separated from the water and used
to power a turbine that generates electricity. Any leftover water and condensed steam are
injected back into the reservoir, making this a sustainable resource.

o Binary Cycle: Uses the heat from lower temperature geothermal resources to boil a working
fluid, usually an organic compound with a low boiling point. The working fluid is vaporized in
a heat exchanger and used to turn a turbine to generate electricity. The water is then injected via
a closed-loop system back into the ground to be reheated in the geothermal reservoir. The water
and the working fluid are kept separated during the whole process, so there are no air emissions.

•	Enhanced Geothermal: Provides geothermal power by tapping into the Earth's geothermal resources that
are otherwise not economical due to lack of water, location, or rock type. Enhanced geothermal systems
(EGS) require engineering hydrothermal reservoirs in hot rocks for commercial use. The reservoirs are
created by drilling wells into hot rock and fracturing the rock to enable a fluid to flow between the
wells. The fluid flows along these fractures and other pathways, picking up heat from the rocks, and
exits the reservoir via production wells. At the surface, the fluid passes through a power plant where
electricity is generated. Upon leaving the power plant, the fluid is returned to the reservoir through
injection wells to complete the circulation loop. EGS offers the chance to extend use of geothermal
resources across more areas of the United States. Resource potential is screened based on temperature at
depth.

•	Geothermal Heat Pump: The upper 10 feet of the Earth maintains a nearly constant temperature between
50° and 60°F (10°-16°C). Geothermal heat pumps take advantage of this resource to heat and cool
buildings and heat water. Geothermal heat pump systems consist of three parts: the ground loop heat
exchanger, the heat pump unit, and the air delivery system (ductwork). The ground loop heat exchanger
is a system of pipes buried in the shallow ground near the building or in a vertical well if land for a
horizontal loop is limited. Water source heat pumps work on the same principle as ground source
systems, but use an adjacent body of water as the heat sink. A fluid (usually water or a mixture of water
and antifreeze) circulates through the loop to absorb or relinquish heat within the ground. Geothermal
heat pumps use much less energy than conventional heating systems, since they draw heat from the
ground. Geothermal heat pumps typically serve a single property, though they may also be viable for
use in multi-tenant applications such as integrated district heating systems.

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Methodology

EPA developed an inventory of contaminated lands, landfills, and mine sites from various sources, including
state agencies. From this inventory, EPA validated coordinates provided for sites and excluded sites where the
coordinates did not match the state information provided. This subset of EPA and state tracked sites was then
mapped against different renewable energy types, as described in the screening criteria in the following tables.
For more information regarding the data sources and types of sites included in this inventory, see the Datasets
section in this document.

Estimated Project Capacity and Screening Criteria

The following screening criteria used to evaluate renewable energy potential were approved by EPA and NREL.
Although there are other critical factors for siting renewable energy facilities (e.g., slope), they were not considered in
this analysis. Refer to the Data Considerations section for a description of screening criteria limitations.



Estimated
RE Project
Capacity Range

Renewable Energy
Resource Availability

Acreage

(acres)

Distance to
Transmission

(miles)

Distance to

Graded
Roads (miles)

Solar PV

Direct Normal

(kWh/m2/day)







Utility scale

> 6.5 MW

>5.0

>40

< 10

< 10

Policy driven

> 6.5 MW

>3.5

>40

< 10

< 10

Large scale

> 300 kW

>3.5

>2

< 1

< 1

Off-grid

N/A

>2.5

--

—

—

CSP



Direct Normal

(kWh/m2/day)







Stirling Engine

> 5 MW

>6.0

>40

< 10

< 10

Trough & Power tower

> 30 MW

>6.0

>250

< 10

< 10

Wind



Wind speed (m/s)



Utility scale

> 10 MW

5.5 m/s at 80 m

> 100

< 10

< 10

Large scale

> 5 MW

5.5 m/s at 80 m

>40

< 10

< 10

1-2 Turbine sites

> 1 MW turbine

5.5 m/s at 80 m

>2

< 1

< 1

Off-grid

N/A

5.5 m/s at 50 m

>0.25

—

-

Biomass



Biomass potential
within 50 miles

(metric tons/yr)



Biopower

> 10 MW

> 280,000

>50

< 10

< 3 road; < 8
rail

Biorefinery

> 10,000 gal/yr

> 700,000

>50

N/A

< 3 road; < 8
rail

Geothermal











Distance to "Identified
Hydrothermal Sites"

(miles) OR
Favorability Rating







Hydrothennal

N/A

Distance: <10

> 10

< 10

< 10

Favorability: > 4





Temperature at
4.5 km Well Depth







Enhanced Geothermal
Systems

N/A

> 150° C (300° F)

> 10

< 10

< 10

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Geothermal









Estimated
RE Project
Capacity Rang

Near Surface Temperature

Other Considerations

Heat Pump

N/A

10° C (50° F) to 24° C (75° F)

All sites which have buildings or other
heating or cooling needs (i.e., office
buildings, warehouses, green houses) are
generally considered favorable for
geothermal heat pumps. This variable is not
included in the prescreening.



Landfill Gas Energy (LFGE) Project Screening Criteria

Landfill Gas Energy As defined by EPA's Landfill Methane Outreach Program (LMOP): www.epa.gov/lmop/

Candidate LFGE

A landfill that is accepting waste or has been closed for five (5) years or less, has at least one (1)
million tons of waste, does not have an operational or under construction LFGE project, or is
designated based on actual interest or planning.

Potential for LFGE

A landfill that does not meet the candidate definition whether because of complete or incomplete data.
However, the landfill could have LFGE potential based on site-specific needs or if data were complete.

Pilot Screening: California Mega Utility Scale and Landfill Sites

With its unique market conditions and renewable energy development plans, the State of California faces
significant pressures associated with conversion of open space for mega utility scale renewable energy projects,
specifically desert lands developed for solar energy projects.

EPA completed a more refined screening of sites in California to identify prime locations for mega utility scale
renewable energy development, based on the various renewable energy technologies and associated screening
criteria. This level of state- or region-specific screening is a pilot to determine if similar refined screening would
further support and promote the reuse of potentially contaminated lands, landfills, and mine sites by tailoring the
screening criteria specific to market or regional considerations and/or renewable energy development trends.

Mega Utility Scale Projects



Estimated
RE Project
Capacity Range

Renewable Energy
Resource Availability

Acreage

(acres)

Distance to
Transmission

(miles)

Distance to
Graded Roads

(miles)

Solar PV



Direct Normal

(kWh/m2/day)







Utility scale

> 33.3 MW

>5.0

>200

< 1

< 1

CSP



Direct Normal

(kWh/m2/day)







Trough & Power tower

> 50 MW

>7.5

>400

< 1

< 1

Wind



Wind speed at 80 m

(m/s)







Utility scale

> 20 MW

>5.5

>500

< 1

< 1

Large Scale Projects at Landfills



Estimated
RE Project
Capacity Range

Renewable Energy
Resource Availability

Acreage

(acres)

Distance to
Transmission

(miles)

Distance to
Graded Roads

(miles)

Solar PV



Direct Normal

(kWh/m2/day)







Utility scale

> 6.5 MW

>5.0

>40

< 1

< 1

Wind



Wind speed at 80 m

(m/s)







Utility scale

> 5 MW

>5.5

>40

< 1

< 1

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Data Considerations

The following information should be considered when reviewing these data.

•	EPA and state databases are updated continuously with information such as new sites and updated
acreage. The information in the RE-Powering Mapper dataset provides a snapshot in time, as described
in the Datasets section of this document. The use of site-specific information provided herein should
only be used with the understanding that the information may change over time.

•	EPA does not maintain or manage the state datasets. Currently, snapshots of the follow ing states
datasets are included: California. Hawai'i. Illinois. Massachusetts. New Jersey, New York.

Oregon. Pennsylvania. Texas, Virginia, and West Virginia.

Location and Acreage Data

•	Boundary data are not collected consistently for EPA sites; therefore, each EPA tracked site was
mapped using a single latitude and longitude point obtained from EPA's Program Office databases (see
Datasets section for more information on p rog ram -spec i fi c databases). In order to approximate the site
size/boundary and estimate the potential for renewable energy generation across an entire site, the site
latitude and longitude point was mapped and a circular buffer was drawn around the site that was equal
to the area reported for the site. The maximum renewable energy resource values that the buffer covered
were recorded for solar and wind resources. This methodology has limitations in that sites are typically
not circles and latitude and longitude are not always recorded at the geographic center of the site.
However, given these limitations, this method will allow a more accurate snapshot of what energy
potential may be available at the site better than the single data point.

•	Acreage values for each site might not be representative of available land at each particular site, nor the
total contaminated area. For example, many federal facilities on the National Priorities List (NPL) are
listed "fence to fence." which encompasses the entire facility, rather than only the contaminated portions
of the facility. As such, the potentially or formerly contaminated areas may represent only a portion of
the total acreage of these Superfund sites. In addition, acreage values do not take into account the
physical characteristics at the site (e.g.. buildings, topography, tree cover, etc.) and. thus, may not
represent the true usable acreage of the site.

•	Data for state tracked sites in West Virginia. Pennsylvania. Virginia abandoned mine lands (AML),
New York. New Jersey AML, New Jersey Landfills. New Jersey Quarries and Texas Landfills were
provided as polygons in ESRI shapefile format. The polygon data provides site boundaries, and as such
circular buffers were not modeled for these sites, the polygon site boundaries were used for the analysis.

•	Data for state tracked sites in Virginia (Orphaned Mineral Mines), California. New Jersey Contaminated
Land Sites. Texas (State Superfund and Voluntary Cleanup Program). Illinois. Massachusetts, and
Oregon were mapped using a single latitude and longitude point; therefore, data were evaluated using
the same methodology as was used for the EPA tracked sites (see first bullet in this section and the
Datasets section for more information).

•	Sites without coordinates were geocoded using the address provided. Geocoded site locations were
verified by matching the location mapped by geocoded coordinates to the city provided in the database,
approximately 600 EPA and State tracked sites were geocoded.

•	EPA and state tracked sites that were identified as having potentially incorrect latitude and longitude
data (i.e., mapped locations did not match city or county as recorded or coordinates could not be
obtained by geocoding) are excluded from the analysis. Approximately 1,000 sites were eliminated
from the screening due to issues with the location data.

•	Acreage is not a screening criterion for off-grid solar because such systems are typically used to power a
single property or local area, and are not constrained by limited acreage. For example, a property ow ner
could install PV panels to supplement the electricity provided to the site from traditional sources. In
most cases, these systems would need to be interconnected to the existing utility grid and may be subject

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to utility regulations or policies. In some cases, an off-grid system may power a given load. (e.g.. a
small-scale pump and treat system).

Geographical Areas Not Analyzed

•	With the exception of Puerto Rico and the Virgin Islands, the U.S. territories were not evaluated or
included in this analysis as renewable energy resource and transmission data were not readily available
for these territories.

•	Biomass and geothermal resource data were not readily available for Puerto Rico and the Virgin Islands.
Therefore, these renewable energy potential types were not evaluated for these sites.

•	Geothermal data is limited for Hawai'i. Only known hydrothermal information was available at the time
of this analysis.

Photovoltaic Policy Driven and State RPS Notes

•	State renewable energy policy information used to develop the PV policy driven criteria is constantly
changing and being updated. Refer to the DOE Database of State Incentives for Renew ables &
Efficiency at www .dsireusa. org.

Landfill Notes

•	Landfills are subject to varying regulatory requirements. These requirements sometimes include a
composite liner comprised of a flexible membrane lining the bottom and sides of the landfill and
installation of a final landfill cover and providing long-term care of closed landfills. These regulatory
requirements, the weight of wind turbines and CSP systems, and the drilling required for geothermal
facilities may increase the difficulty of siting these technologies directly on closed landfills.

•	The mapped acreage for landfills is the highest acreage value among landfill designed area, landfill
current area and landfill total area.

Wind Notes

•	Wind speed resource data was obtained through an agreement with NREL using model data developed
by AWS Truepower LLC. Wind speeds were gathered for the site point locations at heights of 50, 80,
and 110 meters. Sites located in the continental US (lower 48) also have wind speeds at 150 meters.

•	Wind data information represents the modeled wind speed at the specific location of the site. As wind
speeds can vary widely across large sites, screened results may not accurately reflect the true wind
potential across the site. Moreover, although the modeled data reflect the current state-of-the-art in wind
modeling, by nature they cannot be as accurate as meteorological measurements taken at a given
location. Site-specific data collection over an extended period of time would be necessary to estimate
true wind speeds at the site.

Geothermal Notes

•	Geothermal resource data were obtained from two sources:

o Hydrothermal: Two datasets were used for hydrothermal potential; both datasets came from the
U.S. Geological Survey. A point shapefile "Identified Moderate and High Temperature
Geothermal Systems of the Western United States including AK and HI" and a polygon
shapefile and raster dataset "Geothermal Favorability Map Derived From Logistic Regression
Models of the Western United States."

o Enhanced Geothermal: Southern Methodist University in grid format and converted into raster
images using Surfer 8.0 and ESRJ ArcView 9.2. The raster data were then extracted to the site
location points.

•	For geothermal flash and binary plants, additional subsurface mineral rights covering adjacent acreage
may be needed in order to capture enough of the resource to make development feasible. This is largely

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specific to the size of the power generating facility; the larger the size of the facility the more resource is
needed for extraction of the hot liquid and its injection into the geothermal reservoir.

•	Potential for geothermal direct use applications was not analyzed because required temperature data at
shallow depths were not available. In addition, there are numerous direct use applications (e.g., district
space heating, crop drying, greenhouse heating and aquaculture), and each has its own specific
temperature requirements. More information is available at:

www 1 .eere .energy, gov/geothermal/pdfs/directuse .pdf.

•	All sites that have buildings are generally considered favorable for geothermal heat pump installation.
The optimal temperature range of 10° C (50° F) to 24° C (75° F) was used for screening purposes for
this analysis.

Miscellaneous Notes

•	For the biomass analysis, the screening criteria include resources within a 50-mile radius of the site.
Therefore, a 50-mile buffer was drawn around the site and the sum of the biomass resource within 50
miles of the site was recorded.

•	In instances where distances to transmission lines, highways, or rails are zero, the transmission line,
highway, or rail intersects the site buffer, meaning that the infrastructure is present within the generated
site boundary.

•	Although slope is a critical factor for siting some types of renewable energy, it was not considered in the
analysis due to limitations in the availability of high resolution slope data for sites dispersed across the
United States. In addition, slope can vary dramatically across a site, especially at large sites (many sites
measure upwards of 1,000 acres), making it difficult to accurately estimate each site's slope and the area
of each site that would be suitable for each type of renewable energy. Site-specific slope analysis should
be performed for any site being considered for renewable energy development.

•	EPA obtained infrastructure data from the Department of Homeland Security's (DHS) Homeland
Security Infrastructure Program (HSIP). This dataset contains information related to substations,
transmission lines, and railways.

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Datasets

The following data sources were used to develop the inventory of EPA and state tracked sites evaluated as part of this
analysis. Site information and screening data were needed to conduct this analysis. Screening data were provided by a
number of sources including NREL, the Federal Emergency Management Agency (FEMA), and HSIP.

Site Information - EPA Datasets

Note: EPA datasets are updated continuously so these data provide a snapshot in time.

Program Name

Description of Dataset used in Analyses

Data
Current

Date of
Screening

AML Program
(Abandoned Mine Lands)

Includes all abandoned hardrock mines and mineral
processing sites listed in the Comprehensive Environmental
Response, Compensation and Liability Information System
(CERCLIS). Including abandoned mine sites on the National
Priorities List (NPL), often referred to as "Superfund" Sites
and abandoned mine sites where EPA also lias made
emergency response actions.

11/2013

6/2015

Brownfields

Brownfields are real property where expansion
redevelopment, or reuse may be complicated by the presence
or potential presence of a hazardous substance, pollutant, or
contaminant. Brownfields are often found in and around
economically depressed neighborhoods. Includes data in the
Assessment Cleanup and Redevelopment Exchange System
(ACRES) database. Data include information on properties
associated with Brownfields grants awarded in fiscal year
2003 and beyond, where an assessment or cleanup activity has
been completed and EPA Brownfields funding was expended.

3/2015

6/2015

Resource Conservation and
Recovery Act (RCRA)

RCRA sites are commercial, industrial, and federal facilities
that treat, store, or dispose of hazardous wastes that require
cleanup of the contamination under the RCRA Corrective
Action (CA) Program. Includes all sites from the RCRA 2020
Universe Inventory.

10/2014

6/2015

Superfund

These sites are contaminated and include industrial facilities,
waste management sites, mining and sediment sites, and
federal facilities Site data for these sites were extracted from
CERCLIS.1 This universe includes sites listed on, proposed
to, and deleted from the National Priorities List (NPL), as
well as some sites that are not included on the NPL (e.g.,
removal sites and others), in addition to Sunerfund Alternative
AoDroach sites.

11/2013

6/2015

Landfill Methane Outreach
Program (LMOP)

Includes data from LMOP, which is a voluntary assistance
and partnership program that promotes the use of landfill gas
as a renewable, green energy resource. LMOP screens
landfills to determine if they are candidates for landfill gas
energy projects or have potential for landfill gas energy
projects. In addition, it tracks landfills that have operational,
under construction, or shutdown landfill gas energy projects.
This universe of sites includes all landfills that have partnered
with LMOP. Visit EPA's LMOP website at
www.ena.sov/lmop/ for more information and definitions of

3/2015

6/2015

landfill gas energy projects.

1 The data for these sites were gathered during the time of transition from CERCLIS to SEMS; thus, sites that were not in CERCLIS were
pulled from Federal Register information from 11/2013 to 6/2015 when possible.

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Site Information - State Data sets

Note: State datasets are updated continuously so this provides a snapshot in time. Please check with states for
the most up-to-date information.

State

Contact Information

California

California Department of Toxic Substances Control (CA DTSC)

EnviroStor

10011 Street

P.O. Box 806

Sacramento, CA 95812-0806

1-877-786-9427

Email: envirostor@dtsc.ca.sov

www.envirostor.dtsc.ca.sov/mblic/

Hawai'i

Hawai'i State Department of Health (HI DOH)
Hazard Evaluation and Emergency Response Office
919 Ala Moana Boulevard, Room 206
Honolulu, HI 96814
Telephone: (808) 586-4249
Fax: (808) 586-7537

httt>://eha-web.doh.hawaii.sov/eha-cma/Ors/HEER/

Illinois

Remediation Projects Management Section

1021 North Grand Avenue East

P.O. Box 19276

Springfield, Illinois 62794-9276

217-524-3300

Site Remediation orosram: www.et>a.illinois.sov/tot>ics/cleanut>-t>rosrams/srD/index
Brownfield orosram: www.ena.illinois.sov/tot>ics/cleanut>-t>rosrams/brownfields/index

New Jersey

Sustainability and Green Energy (SAGE)

New Jersey Department of Environmental Protection

7th Floor, East Wing P.O. Box 402, Mail Code: 401-07E

401 East State Street

Trenton, NJ 08625

609-292-8601

Email: sase inauirics V/dcd.statc.ni.us
www.ni. sov/det>/sase/

New York

New York Department of Environmental Conservation (NYS DEC)

Environmental Remediation

625 Broadway

Albany, NY 12233-7012

518-402-9764

Email: dcnvebVvsw.dec. state, nv. us
www.dec.nv.sov/chemical/brownfields.html

Massachusetts

Clean Energy Results Program

MassDEP

1 Winter St.

Boston, MA 02108

617-292-5500

Email: BWSC. InformationVvstatc.ma.us
www.mass.sov/eea/asencies/massdet>/climate-enersv/enersv/

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State

Contact Information

Oregon

Oregon Department of Environmental Quality (OR DEQ)

Enviromnental Cleanup

811 SW Sixth Ave.

Portland, OR 97204-1390

503-229-5512

Email: WIST AR.Gi 1 a dca. statc.or. us or DEOI nib a dca.state.or.us

Pennsylvania

Bureau of Abandoned Mine Reclamation (PA BAMR)

Rachel Carson State Office Building

P.O. Box 8461

Harrisburg, PA 17105-8461

717-783-2267

Email: RA-eDcontactust@Da.sov

\vww.dortal.state.oa.us/dortal/scrver.Dt/communitv/abandoncd mine reclamation/13961

Texas

Superfund Section, Remediation Division, Texas Commission on Enviromnental Quality

Texas Commission on Enviromnental Quality

P.O. Box 13087

Austin, TX 78711-3087

Phone: 512-239-1000

Email: acVv.tccci.tcxas.sov

www.tcea.texas.sov/

Virginia

Coal AML

Virginia Division of Mined Land Reclamation (VA DMLR)

3405 Mountain Empire Road

P.O. Drawer 900

Big Stone Gap, VA 24219

276-523-8100

Email: dmlrinfo ©dinine.virsinia. sov

httDs://www.dmme.virsinia.sov/DMLR/DmlrLandinsPase.shtml



Orphaned Mineral Mines

Virginia Division of Mineral Mining (VA DMM)

Suite 400

Charlottesville, VA 22903-0667
434951-6310

Email: dmmInfo(@,dmme. virsinia. sov

https://www.dimne.virginia.gov/DMM/divisiomnineralmining.shtml

West Virginia

Office of Abandoned Mine Lands and Reclamation (WV AMLR)
601 57th Street, SE
Charleston, WV 25304
304-926-0499

Contact form: www.deD.wv.sov/Pases/contact.asDx
www.deD.wv. sov/aml/Pases/default.asDx

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State Tracked Abandoned Mine Lands

Two types of AMLs were included in this study. Some of the AMLs included in this analysis are coal mining
sites that were operated prior to August 3, 1977. The enactment of Surface Mining Control and Reclamation Act
(SMCRA) of 1977 created a fund to eliminate (reclaim) health and safety hazards associated with coal mining
operations that were abandoned before the enactment of the statute. As a result of SMCRA, Pennsylvania,
Virginia, and West Virginia developed these datasets as inventories of AML sites eligible for reclamation. The
other type of AML includes hard rock and other mineral mine sites.

State

Description of Dataset used in Analyses

Data
Current

Date of
Screening

West Virginia
AML

This dataset is a polygon shapefile and was downloaded from the West
Virginia Geographic Information System (GIS) Technical Center website
(htft>://wveis.wvu.edu/data/dataset.i3hi3?action=search&ID=150). Coal

7/10/2008

6/2015

AML features were digitized from Abandoned Mine Land Reclamation
source materials by the West Virginia University (WVU) Department of
Geology & Geography and the WVU Natural Resource Analysis Center.
This polygon dataset was published in 1996. A description of the dataset
indicates that typical AML features include highwalls, portals, refuse
piles, and mining structures such as tipples. Acreage values should be
considered as approximate estimations for the features and may not
represent actual site conditions. The dataset does not include ownership
or parcel information.

Pennsylvania

aml'

This dataset is a polygon shapefile and was downloaded from the
Pennsylvania Spatial Data Access Clearinghouse website
(www.rasda.i3su.edu/uci/MetadataDisi3lav.asi3x?entrv=PASDA&file=A

7/05/2012

6/2015

MLInventorvSites2008 07.xml&dataset=460). This dataset Dortravs the
approximate location of Abandoned Mine Land Problem Areas
containing public health, safety, and public welfare problems created by
past coal mining. The data represent the AML Inventory Sites, which are
the boundary of an entire problem area and may contain multiple actual
mining features. The dataset does not include ownership or parcel
information. Most sites are owned privately. When needed, ownership
information must be researched through other means, typically county
real estate records.

Virginia AML

This dataset is a polygon shapefile and was obtained from the Virginia
Department of Mines, Minerals and Energy's Division of Mined Land
Reclamation. The dataset represents polygons of mines extracted from
U.S. Geological Survey (USGS) topographic maps, last photo revised in
the late 1970s and early 1980s. Some of these areas may represent sites
that have been re-mined.

1/21/2008

6/2015

Virginia
Orphaned
Mineral Mines

The dataset was obtained from the Virginia Department of Mines,

Mnerals and Energy's Division of Mneral Mining. This dataset represents
orphaned mineral mining sites in Virginia operated prior to 1968, the
enactment of the Virginia Reclamation Law. Once identified, an orphaned
mine site is evaluated for its potential hazards to the environment and the
public's health and safety. This includes soil and water investigations,
studies on the feasibility of reclaiming the site, cost analysis and seeking
the landowner's consent to allow reclamation to proceed.

7/16/2012

6/2015

New Jersey
AML

This dataset is a polygon shapefile and contains abandoned mine lands in
New Jersey.

11/6/2011

6/2015

New Jersey
Sand and
Gravel
Operations

This dataset is a polygon shapefile and contains registered and non-
registered sand and gravel operations in New Jersey. Only non-registered
sand and gravel operations were evaluated in this study.

11/16/2011

6/2015

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State Tracked Contaminated Sites

Most states track and remediate contaminated sites. Information tracked, reported, and provided varies from
state to state. The data gathered as part of this study was "standardized" in a manner to capture the most
important information consistently reported across a wide range of states. Locations were verified to map in the
associated states.

Name

Description of Dataset used in Analyses

Data
Current

Date of
Screening

California Department of
Toxic Substances
Control (DTSC)

DTSC populates the EnviroStor database system with
information about sites that are known to be contaminated
with hazardous substances as well as information on
uncharacterized properties where further studies may reveal
problems. The dataset was downloaded from
www.envirostor.dtsc.ca.sov/mblic/data download.aso

9/8/2011

6/2015

Hawai'i State
Department of Health

The Hawai'i State Department of Health - Hazard
Evaluation and Emergency Response (HEER) Office
orovidcd an inventory of brownfield sites. httD://cha-
web.doh.hawaii.sov/eha-cma/Leaders/HEER/r)ublic-records.
Note that summary information is available in two forms: a
HEER Sites of Interest Lookup Spreadsheet, and a Public
Record Report in single page per site PDF format.

3/2013

6/2015

Illinois Site Remediation
Program

Identifies the status of all voluntary remediation projects
administered through the Pre-Notice Site Cleanup Program
(1989 to 1995) and the Site Remediation Program (1996 to
the present).

4/2015

6/2015

Illinois State Response
Action Program

This dataset identifies all sites that have been identified as
having potential contamination not covered by another
program, some have been addressed under the Illinois EPA's
State Sites Unit.

4/2015

6/2015

New Jersey - Known
Contaminated Sites

The Known Contaminated Sites List (KCSNJ) for New Jersey
(Non-Homeowner) are those non-homeowner sites and
properties within the state where contamination of soil or
ground water lias been confirmed at levels equal to or greater
than applicable standards. This list of Known Contaminated
Sites may include sites where remediation is either currently
under way, required but not yet initiated, or lias been
completed. The dataset was provided by New Jersey.

11/16/2011

6/2015

New Jersey - Landfills

This dataset is a polygon shapefile of a parcel or parcels
greater than 35 acres located in New Jersey. New Jersey
provided this dataset.

11/21/2011

6/2015

New York -
Environmental
Remediation Sites

This dataset is a polygon shapefile and contains records of
the sites which have been remediated or are being managed
under one of Division of Environmental Remediation's
(DER) remedial programs (i.e.. State Superfund, Brownfield
Cleanup, etc.). All sites listed on the "Registry of Inactive
Hazardous Waste Disposal Sites in New York State" are
included in this database. The Database also includes sites
with entries on the "Registry of Institutional and Engineering
Controls in New York State." This dataset was provided by
New York.

7/8/2011

6/2015

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Name

Description of Dataset used in Analyses

Data
Current

Date of
Screening

Massachusetts Land
Disposal of Solid Waste

The Solid Waste Land Disposal Datalayer was compiled by
the Department of Enviromnental Protection (MassDEP) to
track the locations of land disposal of solid waste. Land
Disposal refers to an operation established in accordance
with a valid site assignment for the disposal of solid waste
into or on land (Landfill), or a location for disposal of solid
waste from one or more sources which is not established or
maintained pursuant to a valid site assigmnent or permit
(Dumping Ground).

4/2014

6/2015

Massachusetts
Contaminated Land
Profiles

This spreadsheet describes sites that have had a release of oil
or hazardous materials and are regulated under
Massachusetts regulations.

The Contaminated Land Profiles list was compiled by the
Department of Enviromnental Protection (MassDEP) to
track the locations of land where a disposal site exists due to
a release of oil and/or hazardous materials. Disposal sites
are either regulated under Massachusetts Contingency Plan
or adequately regulated by another government agency (e.g.
USEPA). A file number know as a Release Tracking
Number (RTN) is assigned to each disposal site.

4/2014

6/2015

Oregon - Environmental
Cleanup Sites

The Oregon Department of Enviromnental Quality (DEQ)
maintains its Enviromnental Cleanup Site Information
(ECSI) database to track sites in the state with known or
potential contamination from hazardous substances, and to
document sites where DEQ has determined that no further
action is required. Data in ECSI is "working information"
used by DEQ's Enviromnental Cleanup Section. This dataset
was provided by Oregon.

9/12/2011

6/2015

Texas Municipal Solid
Waste Facilities

A spreadsheet listing issued permits and other authorizations
as well as pending applications for MS W landfills and
processing facilities that are active, inactive, or not yet
constructed. As well as issued and revoked permits and other
authorizations for MS W landfills and processing facilities that
have closed, and applications that were withdrawn or denied.

4/2015

6/2015

Texas Superfund Sites

Sites in the State of Texas that have been designated as
Superfund cleanup sites; it includes both Federal and State
sites. Note Federal sites were excluded for the purpose of
this analysis as to not double count those already included in
the EPA Superfund dataset.

7/2014

6/2015

Texas Voluntary
Cleanup Sites (VCP)

The Texas VCP provides administrative, technical, and legal
incentives to encourage the cleanup of contaminated sites in
Texas. All non-responsible parties, including future lenders
and landowners, receive protection from liability to the state
of Texas for cleanup of sites under the VCP, most of the
constraints for completing real estate transactions at those
sites are eliminated. As a result, many unused or under used
properties may be restored to economically productive or
community beneficial use.

1/2015

6/2015

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Screening Data

In addition, the following GIS data were compiled and used to perform this analysis.
National Renewable Energy Laboratory (NREL) Data

Specific information on how the data were collected by NREL is available at: www.nrel.gov/gis/.

Resource Name

Description of Dataset used in Analyses

Date of

Access

Lower 48 Direct
Normal Resource
(us9809 dni)

Direct normal solar resource data for the lower 48 states and Hawai'i. Used to
determine potential for utility scale CSP Stirling engine system, utility scale CSP
trough, and power tower systems, and all scales of solar PV.

6/2015

Alaska Direct
Normal Resource
(akdirect)

Direct normal solar resource data for Alaska. Used to determine potential for utility
scale CSP Stirling engine system, utility scale CSP trough, and power tower systems,
and all scales of solar PV.

6/2015

Caribbean Direct
Normal Resource
(csr carib dir)

Direct nonnal solar resource data for the Caribbean (Puerto Rico and Virgin Islands). Used to
detennine potential for utility scale CSP Stirling engine system, utility scale CSP trough and
power tower systems, and all scales of solar PV.

6/2015

Solid Biomass

Contains infonnation about the biomass resources generated by county in the United
States. It includes the following feedstock categories: crop residues, forest residues,
primary mill residues, secondary mill residues, and urban wood waste. Used to
detennine potential for biorefinery and biopower facility siting. Data available for all
jurisdictions except for Puerto Rico and Virgin Islands.

6/2015

Wind

Wind speed resource data at heights of 50, 80, 110, andl40 meters (m); developed by
AWS Truepower LLC. Wind speeds at 80-m height used to detennine potential for
wind energy at utility- and large-scale, as well as 1-2 turbine sites. Wind speeds at 50-
m height used to detennine potential for wind energy at off-grid scale to allow for use
of smaller turbines.

7/2015

Homeland Security Infrastructure Program (HSIP) Data

Distances to transmission lines, substations, and rail were calculated using data obtained from the HSIP
database. Source: HSIP Gold 2015.

Resource Name

Description of Dataset used in Analyses

Date of

Access

Transmission
Lines

Depict market significant existing and proposed electric power transmission lines in
North America. Included lines generally have a capacity of greater than 69 kilovolts.
Source: HSIP Gold 2015 - Ventyx

6/2015

Substations

Identifies existing and proposed substations in North American power transmission
grids. Substations are facilities that switch, change, and/or regulate electric voltage.
Source: HSIP Gold 2015 - Ventyx

6/2015

Rails

Represents the freight lines of the nation's railroad system. Source: HSIP Gold 2015 -
Oak Ridge National Laboratory.

6/2015

Southern Methodist University (SMU) Data

Geothermal data for geothermal heat pumps and EGS were obtained from SMU.

Resource Name

Description of Dataset used in Analyses

Date of
Download

Temperature at
Depths

Infonnation was obtained from SMU in May 2011 in grid fonnat. Depths provided
were 3, 3.5, 4.5, 5.5, and 6.5 kilometers (km). Temperature -at-Depth Maps for the
Contenninous U.S. and Geothennal Resource Estimates. David Blackwell, Maria
Richards, Zachary Frone, Joseph Batir, Andres Ruzo, Ryan Dingwall, and Mitchell
Williams, Geothennal Laboratory, SMU, Dallas, Texas 75275 Geothennal Resources
Transactions, October 2011.

5/2011

Surface
Temperature

Grid depth infonnation was obtained from SMU on June 27, 2009. (Dr. David
Blackwell, Maria Richards and Petru Negraru, 2006, SMU Geothennal Laboratory
Temperature Maps).

6/27/2009

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Resource Name

Description of Dataset used in Analyses

Date of
Download

Heat Flow
Gradient

Data were obtained from the 2004 Geothermal Map of the United States. (Dr. David
Blackwell and Maria Richards, Geothermal Map of North America, AAPG Map,
scale 1:6,500,000, Product Code 423, 2004).

5/1/2009

U. S. Geological Survey (USGS)

Geothermal data for hydrothermal potential were obtained from USGS.

Resource Name

Description of Dataset used in Analyses

Date of
Download

Identified Moderate and
High Temperature
Geothermal Systems of
the Western United
States including AK and
HI

This dataset contains the locations of identified moderate (90 - 150° C) and
high (> 150° C) temperature geothermal systems and associated reservoir
volumes, temperatures, and estimated electric power generation potential. This
is to be used to identify locations and characteristics of identified geothermal
systems.

httD://certmaDDcrxr. usas. ao\/data/acotherinal/western us/snatial/shane/identif

6/2015

iedseothermalsvstems.zir)

Geothermal Favorability
Map Derived From
Logistic Regression
Models of the Western
United States

This dataset shows relative favorability for the presence of geothermal systems
in the western United States. It is intended to highlight areas of elevated
potential for the presence of undiscovered moderate (90 - 150° C) to high (>
150° C) temperature geothennal systems. It is not meant to be used to locate
exact areas for exploration.

httD://certmaDDcrxr. usas. ao\/data/acothcnnal/\\cstern us/snatial/shane/favora

6/2015

bilitvsurface.zio

Renewable Energy Zone (REZ) Data

REZs typically look at high renewable resource areas (i.e., areas that have a high potential for generating a
specific number of megawatts via solar, wind, biomass, or geothermal). From these high resource areas,
exclusion and avoidance areas, such as sensitive environmental areas and inaccessible areas, among others, are
removed and the remaining areas are identified as prime areas for potential renewable energy development. Five
REZs were identified at the time this document was completed; however other states and regions are in the
process of creating and generating REZs.

Resource Name

Description of Dataset used in Analyses

Date of
Download

Western Governors
Association

Identifies areas with the potential for large scale development of renewable
resources and low enviromnental impacts, subject to resource-specific
permitting processes. The Western Governors Association and Department of
Energy jointly produced the Western REZ. This dataset was provided by the
Western Governors Association

6/2015

Bureau of Land
Management (BLM)
Solar Zones

BLM-administered lands potentially available for solar development and which
are proposed as priority development areas for utility scale solar energy
facilities These files were downloaded from
www.solareis.anl.gov/maps/resource/index.cfm.

6/2015

Colorado State Wind
and Solar Generation
Development Areas

Areas where the resource can be developed with competition among developers
for utility-scale wind and solar projects. These datasets were obtained from the
Governor's Energy Office.

6/2015

California Competitive
Renewable Energy
Zones

Areas of developable resources (without significant, immitigable, barriers to
development). This dataset was downloaded from
www. enersv. ca. eov/reti/documents/

6/2015

Utah Renewable Energy
Zones

The Utah Renewable Energy Zones (UREZ) identifies areas in Utah where
utility-scale renewable energy development could occur and assesses the
electrical generation potential of wind, solar, and geothennal technologies.
fto://fto.asrc.utah.sov/UtahSGID Vector/UTM12 NAD83/ENERGY/Packaeed

6/2015

Data/ Statewide/RenewableEnerevResources/

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Database of State Incentives for Renewables <& Efficiency (DSIRE) Data

DOE's DSIRE website is a comprehensive database of information on state, local, utility, and federal incentives
and policies that promote renewable energy and energy efficiency. DSIRE was consulted for information for the
PV policy criteria Analysis was completed August 2015. Refer to www.dsireusa.org for the most up-to-date
information regarding state and federal policies.

ESRI Data

ESRI software, copyright 2001-2006

Resource Name

Description of Dataset used in Analyses

Date of
Download

U.S. Highways
(highways.sdc)

Used to calculate the approximate distance to the nearest graded road.

N/A

Contact Information

For more information, visit www. epa.gov/rencwab 1 ccncrgv 1 and or contact EPA's RE-Powering
America's Land Initiative at cleanenergy@epa.gov.

Program and regional contacts are available at: www.epa.gov/renewableenergyland/rd contacts.htm.

The RE-Powering Mapper and associated documents are provided solely as general information on
screening potentially or formerly contaminated lands, landfills, and mine sites for renewable energy
potential. It does not address all information, factors, or considerations that may be relevant in a
particular situation. Results do not reflect an endorsement or recommendation for development
potential by EPA. References to third-party publications, websites, commercial products, process, or
services by trade name, trademark, manufacturer, or otherwise, are for informational purposes only.
No endorsement or recommendation should be inferred and is not implied. EPA, NREL and the
United States Government do not endorse any non-federal product, service or enterprise.

Data Documentation for Mapping and Screening Criteria for Renewable
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