HomeMy WebLinkAboutItem 08c - IS/MND and MMRP for Goldring Well and PFAS Treatment Plant ProjectResolution No.7623 – Adopt IS/MND and
Approve MMRP for the New Goldring Well and PFAS Treatment Plant Project
April 1, 2025
Page 1 of 4
DATE: April 1, 2025
TO: Honorable Mayor and City Council
FROM: Paul Cranmer, Public Works Services Director
By: Tiffany Lee, Interim Principal Civil Engineer
SUBJECT: RESOLUTION NO. 7623 ADOPTING THE INITIAL STUDY/MITIGATED
NEGATIVE DECLARATION FOR THE GOLDRING WELL AND PER-AND
POLYFLUOROALKYL SUBSTANCES TREATMENT PLANT PROJECT IN
ACCORDANCE WITH THE CALIFORNIA ENVIRONMENTAL QUALITY
ACT (“CEQA”), APPROVING THE MITIGATION MONITORING AND
REPORTING PROGRAM, AND AUTHORIZING THE EXECUTION OF
THE NOTICE OF DETERMINATION
CEQA: Adopt the Initial Study/Mitigated Negative Declaration
Recommendation: Adopt
SUMMARY
The City of Arcadia provides water service to over 57,000 residents. To enhance the
existing water supply infrastructure, the City is partnering with the City of Sierra Madre to
construct a new water supply well. Pursuant to the provisions of the California
Environmental Quality Act (“CEQA”), an Initial Study (“IS”)/Mitigated Negative Declaration
(“MND”) was prepared for this project to evaluate the potential environmental effects
associated with the implementation of the proposed project.
On February 10, 2025, the Draft IS/ MND for the City of Arcadia Goldring Well and Per-
And Polyfluoroalkyl Substances (“PFAS”) Treatment Plant Project was circulated for
public review and comments for 30 days, which concluded on March 11, 2025. During
this time period, public agencies, organizations, and the public in general were afforded
the opportunity to review the draft IS/MND and submit written comments regarding the
documents and the Project. The draft IS/MND has been updated to reflect the one
comment that was received.
The IS/MND found that there would be either no impact or less than significant impact on
all resources with the exception of Air Quality, Hazards and Hazardous Materials, Noise,
and Tribal Cultural Resources. These four resource categories were found to have “Less
Than Significant Impact with Mitigation Incorporated.”
Resolution No.7623 – Adopt IS/MND and
Approve MMRP for the New Goldring Well and PFAS Treatment Plant Project
April 1, 2025
Page 2 of 4
It is recommended that the City Council adopt Resolution No. 7623, adopting the Initial
Study/Mitigated Negative Declaration in accordance with the California Environmental
Quality Act (“CEQA”) for the Goldring Well and Per-And Polyfluoroalkyl Substances
(“PFAS”) Treatment Plant Project, approving the Mitigation Monitoring and Reporting
Program, and authorizing the execution of the Notice of Determination.
BACKGROUND
The City serves water to over 57,000 residents, primarily with water pumped from the
Main San Gabriel Basin, West Raymond Basin, and the East Raymond Basin. To
enhance the existing water supply infrastructure, Arcadia is partnering with the City of
Sierra Madre to construct a new water supply well (Goldring Well) in the Main San Gabriel
Basin.
On November 17, 2020, the Arcadia City Council approved a New Joint Groundwater
Production Well Agreement between the Cities of Arcadia and Sierra Madre to jointly
design, construct, operate, and maintain a groundwater production well in the Main San
Gabriel Basin. Per the terms of the Joint Agreement, Arcadia and Sierra Madre are each
responsible for 50% of the cost of all matters related to the new well.
In March 2023, in response to increased concern over PFAS, the Environmental
Protection Agency (“EPA”) published new proposed regulations that would set Maximum
Contaminant Levels (“MCL”) for select PFAS contaminants. PFAS can be found in
products such as food packaging and commercial and household products, which often
end up in groundwater and are toxic at relatively low concentrations, thus presenting a
danger to both human health and the environment. On June 20, 2023, City Council
approved an amendment to include treatment for the new well to address PFAS that had
been detected in other groundwater sources within the vicinity of the Goldring Well.
DISCUSSION
The proposed project consists of the construction and operation of a groundwater
production well; the construction and operation of a Granular Activated Carbon (“GAC”)
or Ion Exchange (“IX”) treatment system with pre-filters, consisting of 2 pairs of vessels
for the removal of PFAS from the extracted groundwater; the construction and operation
of a new 30,000 gallon backwash tank with a new 4-inch diameter sewer pipeline; and
the construction and operation of a new 30-inch diameter Reinforced Concrete Pipe
(“RCP”) storm drain pipeline, approximately 1,400 feet in length, connecting from the cul-
de-sac at Kardashian Avenue and Goldring Road, going westerly on Randolph Street
and connecting to the existing 57-inch RCP on Peck Road. The City’s Goldring Well will
be located approximately 200 feet south of the intersection of Kardashian Avenue and
Goldring Road, within the existing Arcadia Public Works Services Department Yard.
Resolution No.7623 – Adopt IS/MND and
Approve MMRP for the New Goldring Well and PFAS Treatment Plant Project
April 1, 2025
Page 3 of 4
The proposed project is located in an open, paved, and graded property of approximately
5 acres, owned by the City. The project construction site for the well, pipeline, and PFAS
treatment plant is constrained to a designated area covering roughly 5,000 square feet,
equivalent to 0.15 acres in total.
ENVIRONMENTAL ANALYSIS
Pursuant to the provisions of CEQA, an IS/MND was prepared by Stetson Engineers, Inc.
to evaluate the potential environmental effects associated with the implementation of the
proposed project. The IS assessed the proposed project’s potential to result in significant
environmental impacts for each environmental category listed in the CEQA Guidelines’
Appendix G, Environmental Checklist Form. The IS found that there would be either no
impact or less than significant impact on all resource categories, with the exceptions of
Air Quality, Hazards and Hazardous Materials, Noise, and Tribal Cultural Resources.
These four resource categories were found to have “Less Than Significant Impact with
Mitigation Incorporated.” A detailed review is included in the IS/MND, contained in Exhibit
“A” of Resolution No. 7623. Mitigation measures have been added for the project to
ensure that any potential impacts are mitigated. Stetson Engineers, Inc. has prepared a
Mitigated Negative Declaration and a Mitigation Monitoring and Reporting Program
(“MMRP”), as shown in Exhibit “C” of Resolution No. 7623.
In accordance with Section 21091 of the California Environmental Quality Act (“CEQA”)
and Section 15073 of the CEQA Guidelines, the Draft IS/MND for the Goldring Well and
PFAS Treatment Plant Project was circulated for public review and comments for 30 days,
from February 10, 2025, to March 11, 2025. The document was filed with the State
Clearinghouse and Los Angeles County Clerk; notices were sent to the
residents/businesses within a 500-foot radius, posted on the City’s website, and published
in the Arcadia Weekly. Hard copies of the IS/MND were provided for public review at
Office of the City Clerk and Public Works Services Department. During this time period,
interested parties were afforded the opportunity to review the Draft IS/MND and submit
written comments regarding the documents and the proposed project.
During the comment period, one comment letter was received from the following agency:
• State Water Resources Control Board, Division of Drinking Water (“State Water
Board, DDW”), dated March 11, 2025. State Water Board, DDW requests that the
City provide plans on handling the disposal of PFAS waste residuals and brine
waste from treatment, and the distribution of water to Sierra Madre.
The City Council is required to consider the IS/MND together with any comments received
during the public review process. Responses to the comments received during the public
review process are attached in Exhibit “B” of Resolution No. 7623.
Resolution No.7623 – Adopt IS/MND and
Approve MMRP for the New Goldring Well and PFAS Treatment Plant Project
April 1, 2025
Page 4 of 4
Additionally, in conformance with CEQA, a Notice of Determination (“NOD”) has been
prepared. If approved by the City Council, the NOD will be filed with the Los Angeles
County Clerk and submitted to the State Clearinghouse, completing the CEQA process.
PUBLIC NOTICE/COMMENTS
The public hearing notices for this City Council meeting were mailed to the owners of
those properties that were located within 500 feet of project location and published in the
Arcadia Weekly on February 10 and February 17, 2025. As of March 14, 2025, the City
has not received any additional comments from the public.
FISCAL IMPACT
Approval of the IS/MND meets the requirements under CEQA for the evaluation of the
potential environmental impacts associated with the project. There is no financial impact
or budget action necessary as a result of the recommended action.
RECOMMENDATIONS
It is recommended that the City Council adopt Resolution No. 7623 adopting the Initial
Study/Mitigated Negative Declaration for the Goldring Well and Per-And Polyfluoroalkyl
Substances Treatment Plant Project in accordance with the California Environmental
Quality Act (“CEQA”), approving the Mitigation Monitoring and Reporting Program, and
authorizing the execution of the Notice of Determination.
Attachment: Resolution No. 7623
RESOLUTION NO. 7623
A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF ARCADIA,
CALIFORNIA, ADOPTING THE INITIAL STUDY/MITIGATED
NEGATIVE DECLARATION FOR THE GOLDRING WELL AND PER-AND
POLYFLUOROALKYL SUBSTANCES TREATMENT PLANT PROJECT IN
ACCORDANCE WITH THE CALIFORNIA ENVIRONMENTAL
QUALITY ACT ("CEQA"), APPROVING THE MITIGATION
MONITORING AND REPORTING PROGRAM, AND AUTHORIZING
THE EXECUTION OF THE NOTICE OF DETERMINATION
WHEREAS, To enhance the existing water supply infrastructure, the City is
partnering with the City of Sierra Madre to construct a new water supply well.
WHEREAS, On November 17, 2020, the Arcadia City Council approved a New
Joint Groundwater Production Well Agreement between the Cities of Arcadia and Sierra
Madre to jointly design, construct, operate, and maintain a groundwater production well
in the Main San Gabriel Basin.
WHEREAS, Pursuant to the provisions of the California Environmental Quality Act
("CEQA"), an Initial Study ("IS")/ Mitigated Negative Declaration ("MND") was prepared
for the Arcadia Goldring Well and Per-and Polyfluoroalkyl Substances ("PFAS")
Treatment Plant Project to evaluate the potential environmental effects associated with
the implementation of the proposed project attached hereto as Exhibit "A".
WHEREAS, the City evaluated potential environmental effects of the Project
through the preparation and circulation of a proposed Mitigated Negative Declaration
(State Clearinghouse No. 2025020361, the MND) and consideration of all comments and
responses as attached hereto as Exhibit "B", and incorporated herein by this reference;
and
WHEREAS, the process included a 30-day review period for the proposed Mitigated
Negative Declaration which was initiated on February 10, 2025, with the submittal of the
proposed Mitigated Negative Declaration to the State Clearinghouse for public review and
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distribution to responsible, trustee, and public agencies with jurisdiction over the
resources affected by the Project; and
WHEREAS, the Notice of Intent ("NOi") to adopt the Mitigated Negative
Declaration was also filed with the Los Angeles County Clark on February 10, 2025; and
WHEREAS, the NOi was posted on the City's website and published in the
Arcadia weekly; and
WHEREAS, notices were sent to the residents/business within 500-foot radius;
and
WHEREAS, Hard copies of the Initial Study/Mitigated Negative Declaration were
provided for public review at Office of the City Clerk and Public Works Ser vices
Department; and
WHEREAS, during this time period, public agencies, organizations, the
residents/business within 500-foot radius, and the public in general were afforded the
opportunity to review the Draft Initial Study/Mitigated Negative Declaration and submit
written comments regarding the documents and the proposed project; and
WHEREAS, one comment letter on the NOi was received by the City before the
end of the 30-day public review period on March 11, 2025, attached hereto as Exhibit "B";
and
WHEREAS, all actions required to be taken by applicable law related to the
preparation, circulation, and review of the proposed NOi have been taken; and
WHEREAS, A final Mitigated Negative Declaration has been prepared consisting
of the proposed Mitigated Negative Declaration, all comments received during the public
review period, and responses to all significant environmental points raised during the
public review period. The final Mitigated Negative Declaration was posted on the City of
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Arcadia's website at https://www.arcadiaca.gov/ on or about March 27, 2025.
WHEREAS, the City Council has considered the Mitigated Negative Declaration,
and the Project at an open and public meeting on April 1, 2025. The City Council, after
staff analysis, independently reviewed and analyzed reports and declarations which
became part of the record of this decision; and
WHEREAS, This project should not have a potentially significant effect on the
environment with mitigation measures incorporated. This finding is based upon the criteria
of the Guidelines of the State Secretary for Resources, Sections 15064 (Determining
Significant Effect), 15065 (Mandatory Findings of Significance), and 15070 (Decision to
prepare a Mitigated Negative Declaration), and the following reasons as documented in
the Mitigated Negative Declaration for the project, attached hereto as Exhibit "A"; and
WHEREAS, The Initial Study assessed the proposed project's potential to result in
significant environmental impacts for each environmental category listed in the CEQA
Guidelines' Appendix G Environmental Checklist Form. The Initial Study found that there
would be either no impact or less than significant impact on all resource categories with
the exceptions of Air Quality, Hazards and Hazardous Materials, Noise, and Tribal
Cultural Resources; and
WHEREAS, these four resource categories were found to have "Less than
significant Impact with Mitigation Incorporated". A detailed review is included in the
IS/MND; and
WHEREAS, the City's Consultant's Stetson Engineers, Inc. has prepared a
Mitigated Negative Declaration and a Mitigation Monitoring and Reporting Program
("MMRP") as shown in Exhibit "C" of Resolution No. 7623.
WHEREAS, no new significant information, as defined by CEQA Guidelines
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Section 15073.5, was received by the City after circulation of the Draft MND such that
recirculation is required. The information contained the Final MND supports the Draft
MND's analysis and conclusions and clarifies certain items in the Draft MND based on
the inquire from the one comment received. Therefore, no recirculation is required.
NOW, THEREFORE, THE CITY COUNCIL OF THE CITY OF ARCADIA,
CALIFORNIA, DOES HEREBY FIND, DETERMINE, AND RESOLVE AS FOLLOWS:
SECTION 1. CEQA FINDINGS. The City Council incorporates the findings set forth
in the paragraphs above as if restated herein in their entirety.
SECTION 2. CITY COUNCIL INDEPENDENT JUDGEMENT AND REVIEW. The
City Council further certifies that the Mitigated Negative Declaration was presented to the
City Council, which reviewed and considered the information contained in said Mitigated
Negative Declaration prior to deciding whether to approve the proposed Project. The
Mitigated Negative Declaration has been thoroughly reviewed and analyzed by the City's
staff, and the City Council. The draft documents circulated for public review reflect the
City's own independent judgement and the Mitigated Negative Declaration as certified by
this Resolution also reflects the independent judgement of the City Council.
SECTION 3. CEQA -MITIGATED NEGATIVE DECLARATION ADOPTION.
Based on the finding set forth above, and on the record of the meeting, the City Council
hereby approved the Mitigated Negative Declaration for the Project, as presented to
Coun cil and set fort in the staff report and certifies that the Mitigated Negative Declaration
is an adequate and complete document prepared in compliance with the California
Environmental Quality Act, as amended, and the State and local Guidelines promulgated
there under.
SECTION 4. MITGATION MONITORING AND REPORTING PROGRAM
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ADOPTED. The City Council hereby adopts the Mitigation Monitoring and Reporting
Program set forth and incorporated herein by this reference, as the mitigation monitoring
and reporting program for the project (Exhibit "C"). The City Council finds that the
Mitigation Monitoring and Reporting Program has been prepared in accordance with
CEQA and the CEQA Guidelines and directs the authorization of the City Manager or his
authorized representative to oversee the implementation of the program.
SECTION 5. APPROVAL OF THE PROJECT. The City Council has reviewed and
considered the Project and approves the Project. The City Manager or his authorized
designee is authorized to implement the Project.
SECTION 6, FILING OF NOTICE OF DETERMINATION. The City Council herby
directs the City Manager or his authorized designee to file a Notice of Determination within
five (5) working days after approval of the Project.
SECTION 7. The City Clerk shall certify to the adoption of this Resolution.
[SIGNATURES ON THE NEXT PAGE]
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Passed, approved, and adopted this 1st day of April, 2025.
ATTEST:
City Clerk
APPROVED AS TO FORM:
Michael J. Maurer
City Attorney
Mayor of the City of Arcadia
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1
Initial Environmental Study
1. Project Title: City of Arcadia
Goldring Well and PFAS Treatment Plant
2. Lead Agency Name and Address:
City of Arcadia
240 West Huntington Dr.
Arcadia, CA 91066
3. Contact Person and Phone Number:
Tiffany Lee, Senior Civil Engineer
(626) 254-2721
4. Project Location: Within the City of Arcadia, Intersection of Kardashian Avenue
and Goldring Road
5. Project Sponsor’s Name and Address:
City of Arcadia
240 West Huntington Dr.
Arcadia, CA 91066
City of Sierra Madre
232 West Sierra Madre Blvd.
Sierra Madre, CA 91024
6. General Plan Designation:
The Project site is located within the City of Arcadia and the site is designated as
Government Use in the City of Arcadia General Plan.
7. Zoning: The Project site is zoned as a Public Facility (PF) within the City of
Arcadia. The area is zoned as Industrial (M-1) on the west side of Kardashian and
on the north side of Goldring Road.
8. Description of the Project: (Describe the whole action involved, including but
not limited to later phases of the Project, and any secondary, support, or off-site
features necessary for its implementation. Attach additional sheets if necessary).
The proposed project consists of the construction and operation of a
groundwater production well, the construction and operation of a Granular
Activated Carbon (GAC) or Ion Exchange (IX) treatment system with pre-filters
consisting of 2 pairs of vessels for the removal of Per and Polyfluoroalkyl
substances (PFAS) from the extracted groundwater, the construction and
operation of a new 30,000 gallons backwash tank with a new 4-inch diameter
sewer pipeline, and the construction and operation of a new 30-inch diameter
Reinforced Concrete Pipe (RCP) storm drain pipeline approximately 1,400 feet in
EXHIBIT "A"
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length connecting from the cul-de-sac at Kardashian Avenue and Goldring Road,
going westerly on Randolph Street and connecting to the existing 57-inch RCP on
Peck Road (Project). The City of Arcadia’s (City) Goldring Well will be located
approximately 200 feet south of the intersection of Kardashian Avenue and
Goldring Road, within the existing City’s Public Works Yard. The proposed Project
is located in an open, paved and graded property with a total size of approximately
5 acres owned by the City. The project construction site for the well, pipeline, and
PFAS treatment plant is constrained to a designated area covering roughly 5,000
square feet, equivalent to 0.15 acres in total.
The Project will be located in the Main San Gabriel Basin (Main Basin) and the
groundwater supply will be shared between the City of Arcadia and the City of
Sierra Madre and will serve to enhance the Cities’ existing water supply
infrastructure and provide system redundancy.
The Project would include well drilling, well development, well testing,
pipeline construction, treatment plant construction and startup testing, and site
upgrades. Site upgrades would include the construction of a small well enclosure
to house the well pump and discharge piping, and installation of disinfection
equipment and electrical equipment in an adjacent existing building. In addition, a
new underground pipeline would be installed to connect the new well to an existing
water distribution pipeline and a new underground pipeline will be installed to
connect to an existing storm drain.
9. Surrounding Land Uses and Setting (briefly describe the project’s
surroundings):
The proposed Project is located in the City of Arcadia. The surrounding
neighborhood includes industrial and light manufacturing properties. Surrounding
areas of the proposed Project are shown in photos below.
Industrial property along Kardashian Avenue Industrial property adjacent to Project area
3
10. Other agencies whose approval is required (e.g., permits, financing
approval, or participation agreement):
¾State Water Resources Control Board Division of Drinking Water
¾Main San Gabriel Basin Watermaster
¾County Sanitation Districts of Los Angeles County
¾City of Arcadia
¾City of Sierra Madre
¾Regional Water Quality Control Board
¾Los Angeles County Flood Control District
¾Los Angeles County Department of Public Health
ENVIRONMENTAL FACTORS POTENTIALLY AFFECTED:
The environmental factors checked below could be potentially affected by this
project, involving at least one impact that is a "Potentially Significant Impact" as
indicated by the checklist on the following pages.
Aesthetics Agriculture and Forestry
Air Quality Biological Resources
Cultural Resources Energy
Geology/Soils Greenhouse Gas Emissions
Hazards and Hazardous Materials Hydrology/Water Quality
Land Use/Planning Mineral Resources
Noise Population/Housing
Public Services Recreation
Transportation Tribal Cultural Resources
Utilities/Service Systems Wildfire
Mandatory Findings of Significance
DETERMINATION: (To be completed by the Lead Agency)
On the basis of this initial evaluation:
I find that the proposed project COULD NOT have a significant effect on the
environment, and a NEGATIVE DECLARATION will be prepared.
I find that although the proposed project could have a significant effect on the
environment, there will not be a significant effect in this case because revisions in the
project have been made by or agreed to by the project proponent. A MITIGATED
NEGATIVE DECLARATION will be prepared.
□
□
□
I find that the proposed project MAY have a significant effect on the environment, and
an ENVIRONMENTAL IMPACT REPORT is required.
I find that the proposed project MAY have a "potentially significant impact" or
"potentially significant unless mitigated" impact on the environment, but at least one
effect 1) has been adequately analyzed in an earlier document pursuant to applicable
legal standards, and 2) has been addressed by mitigation measures based on the
earlier analysis as described on attached sheets. An ENVIRONMENTAL IMPACT
REPORT is required, but it must analyze only the effects that remain to be addressed.
I find that although the proposed project could have a significant effect on the
environment, because all potentially significant effects (a) have been analyzed
adequately in an earlier EIR or NEGATIVE DECLARATION pursuant to applicable
standards, and (b) have been avoided or mitigated pursuant to that earlier EIR or
NEGATIVE DECLARATION, including revisions or mitigation measures that are
imposed upon the proposed project, nothing further is required.
Signature Date
Print Name
4
5
Significant
Impact
Less Than
Significant or
Less than
Significant
with
Mitigation
Incorporation
No
Impact
Analyzed in
the Prior
EIR
Substantially
Mitigated by
Uniformly
Applicable
Development
Policies
I. AESTHETICS -- Except as provided in Public
Resources Code Section 21099, would the
project:
a)Have a substantial adverse effect on a scenic
vista?
b) Substantially damage scenic resources,
including, but not limited to, trees, rock
outcroppings, and historic buildings within a state
scenic highway?
c) In non-urbanized areas, substantially degrade
the existing visual character or quality of public
views of the site and its surroundings? (Public
views are those that are experienced from a
publicly accessible vantage point). If the project is
in an urbanized area, would the project conflict
with applicable zoning and other regulations
governing scenic quality?
d) Create a new source of substantial light or
glare which would adversely affect day or
nighttime views in the area?
II. AGRICULTURE AND FOREST RESOURCES:
In determining whether impacts to agricultural
resources are significant environmental effects,
lead agencies may refer to the California
Agricultural Land Evaluation and Site
Assessment Model (1997) prepared by the
California Dept. of Conservation as an optional
model to use in assessing impacts on agriculture
and farmland. In determining whether impacts to
forest resources, including timberland, are
significant environmental effects, lead agencies
may refer to information compiled by the
California Department of Forestry and Fire
Protection regarding the stat’s inventory of forest
land, including Forest and Range Assessment
Project and the Forest Legacy Assessment
Project; and forest carbon measurement
methodology provided in Forest Protocols
adopted by the California Air Resources Board.
Would the project:
a) Convert Prime Farmland, Unique Farmland, or
Farmland of Statewide Importance (Farmland),
as shown on the maps prepared pursuant to the
Farmland Mapping and Monitoring Program of
the California Resources Agency, to non-
agricultural use?
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b) Conflict with existing zoning for agricultural
use, or a Williamson Act contract?
c) Conflict with existing zoning for, or cause
rezoning of, forest land (as defined in Public
Resources Code section 12220(g)), timberland
(as defined by Public Resources Code section
4526), or timberland zoned Timberland
Production (as defined by Government Code
section 51104(g))?
d) Result in the loss of forest land or conversion
of forest land to non-forest use?
e) Involve other changes in the existing
environment which, due to their location or
nature, could result in conversion of Farmland, to
non-agricultural use or conversion of forest land
to non-forest use?
III. AIR QUALITY -- Where available, the
significance criteria established by the applicable
air quality management district or air pollution
control district may be relied upon to make the
following determinations. Would the project:
a)Conflict with or obstruct implementation of the
applicable air quality plan?
b) Result in a cumulatively considerable net
increase of any criteria pollutant for which the
project region is non-attainment under an
applicable federal or state ambient air quality
standard ?
c) Expose sensitive receptors to substantial
pollutant concentrations?
d) Result in other emissions (such as those
leading to odors) adversely affecting a substantial
number of people?
IV. BIOLOGICAL RESOURCES -- Would the
project:
a)Have a substantial adverse effect, either
directly or through habitat modifications, on any
species identified as a candidate, sensitive, or
special status species in local or regional plans,
policies, or regulations, or by the California
Department of Fish and Game or U.S. Fish and
Wildlife Service?
b) Have a substantial adverse effect on any
riparian habitat or other sensitive natural
community identified in local or regional plans,
policies, regulations or by the California
Department of Fish and Game or US Fish and
Wildlife Service?
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c) Have a substantial adverse effect on state or
federally protected wetlands (including, but not
limited to, marsh, vernal pool, coastal, etc.)
through direct removal, filling, hydrological
interruption, or other means?
d) Interfere substantially with the movement of
any native resident or migratory fish or wildlife
species or with established native resident or
migratory wildlife corridors, or impede the use of
native wildlife nursery sites?
e) Conflict with any local policies or ordinances
protecting biological resources, such as a tree
preservation policy or ordinance?
f) Conflict with the provisions of an adopted
Habitat Conservation Plan, Natural Community
Conservation Plan, or other approved local,
regional, or state habitat conservation plan?
V. CULTURAL RESOURCES -- Would the
project:
a) Cause a substantial adverse change in the
significance of a historical resource pursuant to in
'15064.5?
b) Cause a substantial adverse change in the
significance of an archaeological resource
pursuant to '15064.5?
c) Disturb any human remains, including those
interred outside of formal cemeteries?
VI. ENERGY -- Would the project:
a) Result in potentially significant environmental
impact due to wasteful, inefficient, or
unnecessary consumption of energy resources,
during project construction or operation?
b) Conflict with or obstruct a state or local
plan for renewable energy or energy
efficiency?
VII. GEOLOGY AND SOILS -- Would the project:
a) Directly or indirectly cause potential substantial
adverse effects, including the risk of loss, injury,
or death involving:
i)Rupture of a known earthquake fault, as
delineated on the most recent Alquist-Priolo
Earthquake Fault Zoning Map issued by the State
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Geologist for the area or based on other
substantial evidence of a known fault? Refer to
Division of Mines and Geology Special
Publication 42.
ii) Strong seismic ground shaking?
iii) Seismic-related ground failure, including
liquefaction?
iv) Landslides?
b) Result in substantial soil erosion or the loss of
topsoil?
c) Be located on a geologic unit or soil that is
unstable, or that would become unstable as a
result of the project, and potentially result in on-
or off-site landslide, lateral spreading,
subsidence, liquefaction or collapse?
d) Be located on expansive soil, as defined in
Table 18-1-B of the Uniform Building Code
(1994), creating substantial direct or indirect risks
to life or property?
e) Have soils incapable of adequately supporting
the use of septic tanks or alternative waste water
disposal systems where sewers are not available
for the disposal of waste water?
f) Directly or indirectly destroy a unique
paleontological resource or site or unique
geologic feature?
VIII. GREENHOUSE GAS EMISSIONS
Would the project:
a) Generate greenhouse gas emissions, either
directly or indirectly, that may have a significant
impact on the environment?
b) Conflict with an applicable plan, policy or
regulation adopted for the purpose of reducing
the emissions of greenhouse gases?
IX. HAZARDS AND HAZARDOUS MATERIALS
Would the project:
a) Create a significant hazard to the public or the
environment through the routine transport, use,
or disposal of hazardous materials?
b) Create a significant hazard to the public or the
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environment through reasonably foreseeable
upset and accident conditions involving the
release of hazardous materials into the
environment?
c) Emit hazardous emissions or handle
hazardous or acutely hazardous materials,
substances, or waste within one-quarter mile of
an existing or proposed school?
d) Be located on a site which is included on a list
of hazardous materials sites compiled pursuant
to Government Code Section 65962.5 and, as a
result, would it create a significant hazard to the
public or the environment?
e) For a project located within an airport land use
plan or, where such a plan has not been adopted,
within two miles of a public airport or public use
airport, would the project result in a safety hazard
or excessive noise for people residing or working
in the project area?
f) Impair implementation of or physically interfere
with an adopted emergency response plan or
emergency evacuation plan?
g) Expose people or structures, either directly or
indirectly to a significant risk of loss, injury or
death involving wildland fires?
X. HYDROLOGY AND WATER QUALITY --
Would the project:
a) Violate any water quality standards or waste
discharge requirements or otherwise substantially
degrade surface or ground water quality?
b) Substantially decrease groundwater supplies
or interfere substantially with groundwater
recharge such that the project may impede
sustainable groundwater management of
the basin?
c) Substantially alter the existing drainage pattern
of the site or area, including through the
alteration of the course of a stream or river or
through the addition of impervious surfaces, in a
manner which would:
(i) result in substantial erosion or siltation on- or
off-site;
(ii) substantially increase the rate or amount of
surface runoff in a manner which would result in
flooding on- or offsite;
(iii) create or contribute runoff water which would
exceed the capacity of existing or planned
stormwater drainage systems or provide
substantial additional sources of polluted runoff;
or
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(iv) impede or redirect flood flows?
d) In flood hazard, tsunami, or seiche zones, risk
release of pollutants due to project inundation?
e) Conflict with or obstruct implementation of a
water quality control plan or sustainable
groundwater management plan?
XI. LAND USE AND PLANNING - Would the
project:
a) Physically divide an established community?
b) Cause a significant environmental impact due
to a conflict with any land use plan, policy, or
regulation adopted for the purpose of avoiding or
mitigating an environmental effect?
XII. MINERAL RESOURCES -- Would the
project:
a) Result in the loss of availability of a known
mineral resource that would be of value to the
region and the residents of the state?
b) Result in the loss of availability of a locally-
important mineral resource recovery site
delineated on a local general plan, specific plan
or other land use plan?
XIII. NOISE -- Would the project result in:
a) Generation of a substantial temporary or
permanent increase in ambient noise levels in the
vicinity of the project in excess of standards
established in the local general plan or noise
ordinance, or applicable standards of other
agencies?
b) Generation of excessive groundborne vibration
or groundborne noise levels?
c) For a project located within the vicinity of a
private airstrip or an airport land use plan or,
where such a plan has not been adopted, within
two miles of a public airport or public use airport,
would the project expose people residing or
working in the project area to excessive noise
levels?
XIV. POPULATION AND HOUSING -- Would the
project:
a) Induce substantial unplanned population
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growth in an area, either directly (for example, by
proposing new homes and businesses) or
indirectly (for example, through extension of
roads or other infrastructure)?
b) Displace substantial numbers of existing
people or housing, necessitating the construction
of replacement housing elsewhere?
XV. PUBLIC SERVICES
a) Would the project result in substantial adverse
physical impacts associated with the provision of
new or physically altered governmental facilities,
need for new or physically altered governmental
facilities, the construction of which could cause
significant environmental impacts, in order to
maintain acceptable service ratios, response
times or other performance objectives for any of
the public services:
Fire protection?
Police protection?
Schools?
Parks?
Other public facilities?
XVI. RECREATION --
a) Would the project increase the use of existing
neighborhood and regional parks or other
recreational facilities such that substantial
physical deterioration of the facility would occur
or be accelerated?
b) Does the project include recreational facilities
or require the construction or expansion of
recreational facilities which might have an
adverse physical effect on the environment?
XVII. TRANSPORTATION -- Would the project:
a) Conflict with a program plan, ordinance or
policy addressing the circulation system,
including transit, roadway, bicycle and pedestrian
facilities?
b) Would the project conflict or be inconsistent
with CEQA Guidelines section 15064.3,
subdivision (b)?
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c) Substantially increase hazards due to a
geometric design feature (e.g., sharp curves or
dangerous intersections) or incompatible uses
(e.g., farm equipment)?
d) Result in inadequate emergency access?
XVIII. TRIBAL CULTURAL RESOURCES --
Would the project:
a) Would the project cause a substantial adverse
change in the significance of a tribal cultural
resource, defined in Public Resources Code
section 21074 as either a site, feature, place,
cultural landscape that is geographically defined
in terms of the size and scope of the landscape,
sacred place, or object with cultural value to a
California Native American tribe, and that is:
i) Listed or eligible for listing in the California
Register of Historical Resources, or in a local
register of historical resources as defined in
Public Resources Code section 5020.1(k), or
ii) A resource determined by the lead agency, in
its discretion and supported by substantial
evidence, to be significant pursuant to criteria set
forth in subdivision (c) of Public Resources Code
Section 5024.1. In applying the criteria set forth in
subdivision (c) of Public Resource Code Section
5024.1, the lead agency shall consider the
significance of the resource to a California Native
American tribe.
XIX. UTILITIES AND SERVICE SYSTEMS --
Would the project:
a) Require or result in the relocation or
construction of new or expanded water,
wastewater treatment or storm water drainage,
electric power, natural gas, or
telecommunications facilities, the construction or
relocation of which could cause significant
environmental effects?
b) Have sufficient water supplies available to
serve the project and reasonably foreseeable
future development during normal, dry and
multiple dry years?
c) Result in a determination by the wastewater
treatment provider which serves or may serve the
project that it has adequate capacity to serve the
project’s projected demand in addition to the
provider’s existing commitments?
d) Generate solid waste in excess of State or
local standards, or in excess of the capacity of
local infrastructure, or otherwise impair the
attainment of solid waste reduction goals?
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e) Comply with federal, state, and local
management and reduction statutes and
regulations related to solid waste?
XX. WILDFIRE -- If located in or near state
responsibility areas or lands classified as very
high fire hazard severity zones, would the project:
a)Substantially impair an adopted emergency
response plan or emergency evacuation plan?
b) Due to slope, prevailing winds, and other
factors, exacerbate wildfire risks, and thereby
expose project occupants to, pollutant
concentrations from a wildfire or the uncontrolled
spread of a wildfire?
c) Require the installation or maintenance of
associated infrastructure (such as roads, fuel
breaks, emergency water sources, power lines or
other utilities) that may exacerbate fire risk or that
may result in temporary or ongoing impacts to the
environment?
d) Expose people or structures to significant
risks, including downslope or downstream
flooding or landslides, as a result of runoff, post-
fire slope instability, or drainage changes?
XXI. MANDATORY FINDINGS OF
SIGNIFICANCE --
a) Does the project have the potential to
substantially degrade the quality of the
environment, substantially reduce the habitat of a
fish or wildlife species, cause a fish or wildlife
population to drop below self-sustaining levels,
threaten to eliminate a plant or animal
community, substantially reduce the number or
restrict the range of a rare or endangered plant or
animal or eliminate important examples of the
major periods of California history or prehistory?
b) Does the project have impacts that are
individually limited, but cumulatively
considerable? ("Cumulatively
Considerable" means that the incremental effects
of a project are considerable when viewed in
connection with the effects of past projects, the
effects of other current projects, and the effects
of probable future projects)?
c) Does the project have environmental effects
which will cause substantial adverse effects on
human beings, either directly or indirectly?
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Discussion of Environmental Evaluation
This section provides an explanation of all answers noted on the Environmental
Checklist.
I. AESTHETICS
Would the Project:
a) Have a substantial adverse effect on a scenic vista?
No impact. The proposed Project will consist of construction of an extraction well
housed inside an enclosure and a groundwater treatment plant . The proposed
Project is located within the City’s existing Public Works Yards with block walls
around the perimeter and the treatment plant will be partially screened from view
by existing trees, therefore, the proposed Project will not have any impact on a
scenic vista.
b) Substantially damage scenic resources, including, but not limited to, trees, rock
outcroppings, and historic buildings within a state scenic highway?
No impact. The proposed Project will not damage any scenic resources.
c) In non-urbanized area, substantially degrade the existing visual character or
quality of public views of the site and its surroundings? (Public views are those that
are experienced from publicly accessible vantage point.) If the project is in an
urbanized area, would the project conflict with applicable zoning and other
regulations governing scenic quality?
No Impact. The proposed Project will not substantially degrade the existing visual
character or quality of the site and its surroundings. The proposed Project is
consistent with existing zoning at that location and will not post any conflict to
regulations governing scenic quality.
d) Create a new source of substantial light or glare that would adversely affect day
or nighttime views in the area?
No impact. The proposed Project will not have any lighting that will have any
impact on day or nighttime views in the area.
II. AGRICULTURAL RESOURCES
Would the Project:
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a) Convert Prime Farmland, Unique Farmland, or Farmland of Statewide
Importance (Farmland), as shown on the maps prepared pursuant to the Farmland
Mapping and Monitoring Program of the California Resources Agency, to non-
agricultural use?
No impact. The Project is located in a general light industrial zone. There is no
farmland located within the vicinity of the Project and no conversion of farmland
will occur.
b) Conflict with existing zoning for agricultural use, or a Williamson act contract?
No impact. The Project area is not zoned for agriculture.
c) Conflict with existing zoning for, or cause rezoning of, forest land (as defined in
Public Resources Code section 12220(g)), timberland (as defined by Public
Resources Code section 4526), or timberland zoned Timberland Production (as
defined by Government Code section 51104(g))?
No impact. The Project will not conflict with any existing zoning or cause rezoning
of forest land.
d) Result in the loss of forest land or conversion of forest land to non-forest use?
No impact. No forest land is located within the vicinity of the Project and no
conversion of forest land will occur.
e) Involve other changes in the existing environment which, due to their location
or nature, could result in conversion of Farmland, to non-agricultural use or
conversion of forest land to non-forest use?
No impact. The proposed Project will not result in conversion of Farmland, to non-
agricultural use or conversion of forest land to non-forest use.
III. AIR QUALITY
To comply with the Proposed Rule (PR) 1407.1, the latest California Emissions
Estimator Model (CalEEMod version 2020.4.0) was used to evaluate the potential
impacts on air quality generated from the proposed Project. The focus of the air
quality impact assessment was on the air emissions generated from construction
activities. Operational emissions would be minimal and were not considered as
part of the model analysis. The proposed Project activities and schedules are
provided in Table 1 and results of the CalEEMod calculated exhaust emissions are
summarized in Table 2. The CalEEMod generated annual air emissions reports
and the associated assumptions are included in Attachment A. Details of the air
quality impact assessment are discussed below.
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Would the Project:
a) Conflict With or Obstruct Implementation of the Applicable Air Quality Plan?
No impact. The Project is located within the South Coast Air Basin, which is under
the jurisdiction of the South Coast Air Quality Management District (SCAQMD).
The Southern California Association of Governments (SCAG) is responsible for
preparing the regional transportation strategy and control measures portion of an
Air Quality Management Plan (AQMP), which addresses federal and state Clean
Air Act requirements. SCAQMD is responsible for administering the AQMP, which
essentially details goals, policies, and programs for improving air quality and
establishes thresholds for daily operational emissions. Environmental review of
individual projects within the region must demonstrate the daily construction and
operational emissions thresholds as established by SCAQMD will not be
exceeded, nor will the number or severity of existing air quality violations be
increased.
The construction and operation of the Project will not exceed the AQMP’s daily
emissions thresholds (as discussed in items b below) and will therefore not conflict
with or obstruct implementation of the AQMP. There are no Los Angeles County
Metropolitan Transportation Authority (MTA) Congestion Management Plan (CMP)
arterial corridors or intersections within or along the Project site.
Project operations will result in negligible additional vehicle miles traveled (VMT)
associated with employee trips. Since the Project will be located inside the City’s
Public Works facility, employees will walk to the site to check the system
operations without the need for a vehicle. The mobile source project related air
pollutant emissions associated with this Project will be negligible. Consequently,
the Project will not conflict with or obstruct implementation of AQMP.
The South Coast Air Basin has established federal de minimis levels and
attainment status for pollutants. Ozone is classified as extreme with a threshold
of 10 tons per year, PM2.5 is classified as moderate with a threshold of 100 tons
per year, and PM10 is classified as serious with a threshold of 70 tons per year.
Ozone is created when NOx and ROG reacts with sunlight and heat, so NOx and
ROG are considered precursors to Ozone. The construction and operation of the
proposed Project will not exceed any of the attainment thresholds based on
emission estimates shown on Tables 2, will conform with State Implementation
Plan and therefore, there will be no significant impact.
b) Result in a cumulatively considerable net increase of any criteria pollutant for
which the project region is nonattainment under an applicable federal or state
ambient air quality standard?
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Less than Significant Impact. The SCAQMD provides guidance for evaluating
air quality impacts of projects. Activities for the construction of the pumping well,
pipeline, and treatment plant were modeled based on a similar Project schedule
and equipment used. Table 1 identifies the Project schedule and Project activity
examined. The CalEEMod calculates the construction related exhaust emissions
from the construction of an extraction well and are quantified in pounds per day
(lb/day). These exhaust emissions include Reactive Organic Gases [ROGs; also
known as Volatile Organic Compounds (VOCs)], Nitrogen Oxide (NOX), Carbon
Monoxide (CO), Sulfur Dioxide (SO2), Particulate Matter with a diameter of 10
microns or less (PM10), and Particulate Matter with a diameter of microns of 2.5
micros of less (PM2.5). The significance of air quality impacts is based on the
thresholds of significance established by the SCAQMD during any of the well
construction phases.
Table 2 below identifies significance thresholds for potential air quality impacts as
indicated by the SCAQMD. The air quality and global climate change impacts
associated with the proposed Project would not result in a significant impact on air
quality as all of the analyzed air pollutant emissions are significantly less than the
SCAQMD threshold significances. Air emissions generated from the operations of
the new well would be much less than the air emissions generated during the well
construction phases; that is, the air quality and global climate change impacts
associated with the operations of the proposed Well would also be less than the
SCAQMD threshold significances.
Operation of the well and treatment plant will include periodic visits to the site to
collect groundwater samplings and water level measurements, and to conduct
inspection of the operation of the facility and occasional maintenance. Since the
Project will be located inside the City’s Public Works facility, employees will walk
to the site to check the system operations without the need for a vehicle. Air
emissions generated from the operations of the new well would be much less than
the air emissions generated during the well construction phases; that is, the air
quality and global climate change impacts associated with the operations of the
proposed Well would also be less than the SCAQMD threshold significances.
c) Expose sensitive receptors to substantial pollutant concentrations?
Less than Significant Impact. If a project has the potential to result in emissions
of any toxic air contaminants (TACs) or hazardous air pollutants (HAPs) which
result in a cancer risk of greater than one in one million or a health hazard index
of one or more, the project would be deemed to have a potentially significant
impact. Sensitive receptors are defined as schools (preschool – 12 th grade),
hospitals, residential care facilities, day care centers, or other facilities that may
house individuals with health conditions who would be adversely impacted by
changes in air quality. Any project which has the potential to directly impact a
sensitive receptor located within one mile and results in a health risk greater than
the risk significance thresholds would be deemed to have a potentially significant
18
impact. The following sensitive receptors were identified to be located within one
mile of the Project site: Santa Fe Lodge, Cherrylee Elementary School, Rio Hondo
Preparatory School, Rio Hondo Middle School and Arroyo High School.
The State of California considers diesel exhaust particulate matter to be
carcinogenic compounds. Diesel exhaust particulate matter will be emitted during
construction due to the operation of construction equipment at the site. Since
diesel exhaust particulate matter is considered to be carcinogenic, long-term
exposure to diesel exhaust emissions have the potential to result in adverse health
impacts.
As described in item (b) above, daily construction emissions will be below
significant thresholds. Mitigation measures such as misting water spray would be
implemented to reduce dust and particulate matter during construction. Impacts to
sensitive receptors from construction related air emissions will be less than
significant.
d) Create objectionable odors affecting a substantial number of people?
No Impact. The proposed Project operation will not create any objectionable
odors. Any odors generated by the construction equipment (vehicle emission) will
be temporary and controlled in accordance with SCAQMD Rule 402 (Nuisance
Emissions). No impact is anticipated.
IV. BIOLOGICAL RESOURCES
Would the Project:
a) Have a substantial adverse effect, either directly or through habitat
modifications, on any species identified as a candidate, sensitive, or special status
species in local or regional plans, policies, or regulations, or by the California
Department of Fish and Game or U.S. Fish and Wildlife Service?
No Impact. A previous Environmental Assessment was performed for the City’s
Water Supply Wells Project. The previous project also evaluated compliance with
the Endangered Species Act. As indicated in the Environmental Assessment, the
City of Arcadia is urbanized and plant life is limited to non-native, introduced and
ornamental species that area used for landscaping. The project site is located
within a property that is currently developed for industrial use. The animal species
common to the site and the surrounding area are typical of those found in an
urbanized setting. No areas of the City function as a wildlife movement corridor.
No locally designated species are located within the City. In addition, no significant
mature trees (Heritage Trees) will be impacted by the proposed project. The
project site is not located within an area governed by a habitat conservation or
community conservation plan. There will be no impact.
19
b) Have a substantial adverse effect on any riparian habitat or other sensitive
natural community identified in local or regional plans, policies, regulations or by
the California Department of Fish and Game or U.S. Fish and Wildlife Service?
No impact. A previous Environmental Assessment was performed for the City of
Arcadia’s Water Supply Wells Project. The previous project also evaluated
compliance with the Endangered Species Act. As indicated in the Environmental
Assessment, the City of Arcadia is urbanized and plant life is limited to non-native,
introduced and ornamental species that area used for landscaping. The project
site is located within a property that is currently developed for industrial use. No
locally designated species are located within the City. In addition, no significant
mature trees (Heritage Trees) will be impacted by the proposed project. The
project site is not located within an area governed by a habitat conservation or
community conservation plan. There will be no impact.
c) Have a substantial adverse effect on federally protected wetlands as defined
by Section 404 of the Clean Water Act (including, but not limited to, marsh, vernal
pool, coastal, etc.) through direct removal, filling, hydrological interruption, or other
means?
No impact. There are no federally protected wetlands within the project vicinity.
d) Interfere substantially with the movement of any native resident or migratory
fish or wildlife species with established native resident or migratory wildlife
corridors, or impede the use of native wildlife nursery sites?
No Impact. A previous Environmental Assessment was performed for the City of
Arcadia’s Water Supply Wells Project. The previous project also evaluated
compliance with the Endangered Species Act. As indicated in the Environmental
Assessment, the City of Arcadia is urbanized and plant life is limited to non-native,
introduced and ornamental species that area used for landscaping. The project
site is located within a property that is currently developed for industrial use. The
animal species common to the site and the surrounding area are typical of those
found in an urbanized setting. No areas of the City function as a wildlife movement
corridor. The project site is not located within an area governed by a habitat
conservation or community conservation plan. There will be no impact.
e) Conflict with any local policies or ordinances protecting biological resources,
such as a tree preservation policy or ordinance?
No impact. The proposed project will not have any conflict with any local policies
or ordinances protecting biological resources.
20
f) Conflict with the provisions of an adopted Habitat Conservation Plan, Natural
Community Conservation Plan, or other approval local, regional, or state habitat
conservation plan?
No impact. The proposed project will not have any conflict with the provisions of
any adopted Habitat Conservation Plan.
V.CULTURAL RESOURCES
Would the Project:
a) Cause a substantial adverse change in the significance of a historical
resource as defined in §15064.5?
No Impact. A previous Environmental Assessment was performed for the City of
Arcadia’s Water Supply Wells Project, which is located in the general vicinity of the
proposed Project. As indicated in the Environmental Assessment, a review of the
National Register Information System identified that no cultural resource impacts
are anticipated to occur. The Project will not cause a substantial adverse change
in the significance of a historical resource as defined in §15064.5.
b) Cause a substantial adverse change in the significance of an archaeological
resource pursuant to §15064.5?
No Impact. A previous Environmental Assessment was performed for the City of
Arcadia’s Water Supply Wells Project. As indicated in the Environmental
Assessment, a review of the National Register Information System identified that
no cultural resource impacts are anticipated to occur. The proposed Project will
not affect this property or any other historically significant site. As a result, the
Project will not cause a substantial adverse change in the significance of an
archaeological resource as defined in §15064.5.
c) Disturb any human remains, including those interred outside of formal
cemeteries?
No Impact. The Project site is not historically or culturally significant to any group
or individual. There are no cemeteries located in the immediate area that will be
affected by the proposed Project. The only cemetery in the area is the Live Oak
Cemetery (located on E Duarte Rd). As a result, the proposed Project will not
disturb any human remains, including those interred outside of formal cemeteries.
VI. ENERGY
Would the Project:
21
a) Result in potentially significant environmental impact due to wasteful,
inefficient, or unnecessary consumption of energy resources, during project
construction or operation?
Less Than Significant Impact. The Project would not require any new
construction that could involve wasteful, inefficient, or unnecessary consumption
of energy resources. Construction equipment which requires electricity would be
gas or diesel powered. Additional energy would be needed to pump groundwater
However, the Project will include highly efficient well pumps, as such the
consumption of energy resources for the Project would be less than significant.
b) Conflict with or obstruct a state or local plan for renewable energy or energy
efficiency?
No Impact. The Project site would not interfere with any state or local plans for
renewable energy or energy efficiency.
VII. GEOLOGY AND SOILS
Would the Project:
a) Directly or indirectly cause potential substantial adverse effects, including the
risk of loss, injury, or death involving:
i) Rupture of a known earthquake fault, as delineated on the most
recent Alquist-Priolo Earthquake Fault Zoning Map issued by the
State Geologist for the area or based on other substantial evidence
of a known fault? Refer to Division of Mines and Geology Special
Publication 42.
No impact. The Project area is not located within an Alquist-Priolo Earthquake
Fault Zone.
ii) Strong seismic ground shaking?
Less than Significant Impact. All construction activities, including grading work,
will be performed in accordance with approved construction standards and
practices. There will be no significant impact.
iii) Seismic-related ground failure, including liquefaction?
No impact. A geotechnical investigation was performed as part of the preliminary
design to determine the stability of the soil conditions in the Project area. The
geotechnical investigation did not identify any seismic-related ground failure issue
including liquefaction in the Project area.
22
iv) Landslides?
No impact. The proposed Project is not located within a potential landslide area
as the terrain in the area is relatively flat.
b) Result in substantial soil erosion or the loss of topsoil?
No impact. A geotechnical investigation was performed as part of the preliminary
design to determine the stability of the soil conditions in the Project area. The
proposed Project will not result in soil erosion or loss of topsoil.
c) Be located on a geologic unit or soil that is unstable, or that would become
unstable as a result of the Project, and potentially result in on- or off-site landslide,
lateral spreading, subsidence, liquefaction or collapse?
No impact. A geotechnical investigation was performed as part of the preliminary
design to determine the stability of the soil conditions. The proposed Project will
not be located on soil that is unstable, or that will become unstable as a result of
the Project.
d) Be located on expansive soil, as defined in Table 18-1-B of the Uniform Building
Code (1994), creating substantial direct or indirect risks to life or property?
No impact. A geotechnical investigation was performed as part of the preliminary
design to determine the stability of the soil conditions. The Project will create no
risk to life or property.
e) Have soils incapable of adequately supporting the use of septic tanks or
alternative waste water disposal systems where sewers are not available for the
disposal of waste water?
No impact. The proposed Project will not require the use of septic tanks or
alternative waste water disposal system; therefore, there will be no impacts.
f) Directly or indirectly destroy a unique paleontological resource or site or unique
geological feature?
No Impact. There are no known paleontological features or unique geologic
features known to exist on the Project site. If any paleontological resources are
encountered during construction, a qualified paleontologist would be contacted to
assess the significance of the paleontological resource.
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VIII. GREENHOUSE GAS EMISSIONS
Would the Project:
a) Generate greenhouse gas emissions, either directly or indirectly, that may have
a significant impact on the environment?
Less than Significant Impact. Greenhouse gas (GHG) emissions will result from
the use of construction equipment, construction worker vehicles, and truck haul
trips during construction of the proposed Project and potentially from the
occasional operation of an emergency generator. A computer model (CalEEMod
version 2020.4.0) published by the SCAQMD has been used for the potential
greenhouse gas emissions associated with the construction of an extraction well.
The GHG emissions include biologically generated carbon dioxide 4 (Bio-CO2),
Non-Biologically generated carbon dioxide (NBio-CO2), Methane (CH4), and
Nitrous Oxide (N2O). The total carbon dioxide (Total CO2) is the sum of Bio-CO2
and NBio-CO2. In addition, GHG emissions are typically reported in carbon dioxide
equivalents (CO2e) and are quantified in metric tons per year (MT/yr). Currently,
the SCAQMD has not quantified the significance threshold for the GHG emissions;
however; the SCAQMD Governing Board adopted the staff proposal on December
5, 2008 for an interim GHG significance threshold for projects where the SCAQMD
is lead agency. The annual interim GHG significance for CO2e is 3,000 MT/yr
based on the relative GHG emissions contribution between residential/commercial
sectors and stationary source (industrial) sectors. Since the proposed Project is
located within the jurisdiction of the SCAQMD, the interim GHG significance
threshold of 3,000 MT/yr for CO2e is adopted in this analysis as the significance
threshold. The operation of the proposed Project will not directly or indirectly
contribute significantly to GHG over existing conditions.
b) Conflict with an applicable plan, policy or regulation adopted for the purpose of
reducing the emissions of greenhouse gases?
No impact. The proposed Project will include the emission of a small amount of
greenhouse gas primarily from diesel fuel utilized by the construction machinery.
However, this is consistent with normal construction activities and will post no
conflict with any applicable plan, policy or regulation adopted for the purpose of
reducing the emissions of greenhouse gases.
IX. HAZARDS AND HAZARDOUS MATERIALS
Would the Project:
a) Create a significant hazard to the public or the environment through the routine
transport, use, or disposal of hazardous materials?
24
Less than Significant Impact. Experienced professional contractors at the
proposed Project site will perform physical site inspections, which may include
visual inspections, collection of soil samples, and soil testing, to verify the safety
of the proposed Project site before construction will be allowed to commence. If
during construction of the Project, soil contamination is suspected, construction in
the area will stop, and appropriate health and safety procedures will be
implemented consistent with California Occupational Safety and Health
Administration (CalOSHA) health and safety requirements. If the contractor
believes that hazardous materials, as defined in Section 25117 of the Health and
Safety Code, is present in the construction area, the contractor will take the steps
necessary to contain the contaminant, evacuate the area in its current condition,
and notify Department of Toxic Substances Control (DTSC) in writing. DTSC will
promptly investigate the conditions, and if it is determined that contaminated soils
exist, the extent of the contamination will be determined by the means of a Phase
I Environmental Assessment (EA). If the Phase I EA concludes that the site is
contaminated, a Phase II EA may be conducted, which will include the
development of a sampling plan to determine the extent of the contamination and
to help identify the remedial measures suitable for safe completion of the Project.
If the extent of the contamination is small, excavation and transport of the soil to
an appropriate Class I, Class II, or Class III disposal site in accordance to the
provision of existing law, may be performed. If the extend of the contamination is
large, all proper steps and procedures will be taken in accordance to the remedial
measures identified in the Phase II EA. The Environmental Protection Agency and
DTSC will provide regulatory oversight of any investigation and remediation of the
Project site. Any construction waste generated by the proposed Project will be
properly disposed of at an appropriate facility.
b) Create a significant hazard to the public or the environment through reasonably
foreseeable upset and accident conditions involving the release of hazardous
materials into the environment?
No Impact. The Project would not involve any hazardous waste, so there would
be no risk to the public or the environment involving the Project.
c) Emit hazardous emissions or handle hazardous or acutely hazardous
materials, substances, or waste within one-quarter mile of an existing or proposed
school?
No Impact. The Project would not involve any hazardous emissions or handling
of hazardous materials, substances, or waste. In addition, there are no schools
within one-quarter mile of the Project site. Therefore, it would not pose a risk to
existing or proposed school.
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d) Be located on a site which is included on a list of hazardous materials sites
compiled pursuant to Government Code Section 65962.5 and, as a result, would
it create a significant hazard to the public or the environment?
No impact. The proposed Project area is not included on a list of hazardous
materials sites.
e) For a project located within an airport land use plan or, where such a plan has
not been adopted, within two miles of a public airport or public use airport, would
the project result in a safety hazard or excessive noise for people residing or
working in the project area?
Less than Significant Impact. The San Gabriel Valley Airport is about 1.8 miles
southwest of the proposed Project. Ambient noise levels may increase temporarily
in the Project vicinity. Appropriate sound reduction measures will be provided to
ensure the noise level from the extraction wells does not exceed allowable levels.
Because the noise levels are temporary and consistent with normal operation
activity, there is no significant impact.
f) Impair implementation of or physically interfere with an adopted emergency
response plan or emergency evacuation plan?
No impact. The proposed Project will result in more secure water supply for the
City to meet existing and future normal and emergency water operation system
needs. The proposed Project will be performed in accordance with city approved
traffic control plans and will not impair the implementation of or physically interfere
with an adopted emergency response plan or emergency evacuation plan.
g) Expose people or structures, either directly or indirectly to a significant risk of
loss, injury or death involving wildland fires?
No impact. The proposed Project area is not located near any wildlands and there
will be no impact associated with wildland fires.
X. HYDROLOGY AND WATER QUALITY
Would the Project:
a) Violate any water quality standards or waste discharge requirements or
otherwise substantially degrade surface or ground water quality?
Less than Significant Impact. A routine part of the construction of water
extraction wells requires temporary discharge to waste of extracted groundwater.
It is estimated that each well will discharge to waste for approximately 90 hours,
for a total discharge volume of approximately 130 acre-feet during construction. It
26
is anticipated that the extracted water will meet the Regional Water Quality Control
Board’s applicable standards for discharge to surface waters. Discharge will be in
compliance with terms to be agreed upon by RWQCB and EPA.
b) Substantially decrease groundwater supplies or interfere substantially with
groundwater recharge such that the project may impede sustainable groundwater
management of the basin?
No impact. The proposed Project will operate in compliance with the Main Basin
Judgement. The judgment establishes a safe annual yield from the aquifer and
oversees utilization of water rights within the basin and as a result, there will be no
impact associated with depletion of groundwater supplies or recharge.
c) Substantially alter the existing drainage pattern of the site or area, including
through the alteration of the course of a stream or river or through the additional of
impervious surfaces, in a manner which would:
i. result in substantial erosion or siltation on- or off-site
No impact. The proposed Project will not alter the existing drainage pattern of the
site or area in a manner which would result in substantial erosion or siltation on- or
off-site.
ii. Substantially increase the rate or amount of surface water runoff
in manner which would result in flooding on- or offsite;
No impact. The proposed Project will not substantially increase the rate or amount
of surface water runoff in a manner which would result in substantial erosion or
siltation on- or off-site.
iii. Create or contribute runoff water which would exceed the
capacity of existing or planned stormwater drainage systems or
provide substantial additional sources of polluted runoff; or
No impact. The proposed Project will not create or contribute runoff water which
would exceed the capacity of existing or planned stormwater drainage systems or
provide substantial additional sources of polluted runoff.
iv. Impede or redirect flood flows?
No impact. The proposed Project will not alter the existing drainage pattern of the
site in a manner which would impede or redirect flood flows.
d) In flood hazard, tsunami, or seiche zones, risk release of pollutants due to
project inundation?
27
No impact. The proposed Project is not located in flood hazard, tsunami, or seiche
zones.
e) Conflict with or obstruct implementation of a water quality control plan or
sustainable groundwater management plan?
No impact. The proposed Project will not be in conflict with or obstruct
implementation of a water quality control plan or sustainable groundwater
management plan.
XI. LAND USE AND PLANNING
Would the Project:
a) Physically divide an established community?
No impact. Construction of the proposed Project will not physically divide an
established community as the proposed Project will be located within the existing
City’s Public Works site.
b) Cause a significant environmental impact due to a conflict with any land use
plan, policy, or regulation adopted for the purpose of avoiding or mitigating an
environmental effect?
No Impact. The proposed Project will be constructed in a developed site that
currently houses other public service facilities and will not conflict with any
applicable land use plan, policy or regulation of an agency with jurisdiction over
the Project.
XII.MINERAL RESOURCES
Would the Project:
a) Result in the loss of availability of a known mineral resource that would be of
value to the region and the residents of the state?
No impact. The proposed Project will not result in the loss of availability of a
known mineral source.
b) Result in the loss of availability of a locally-important mineral resource recovery
site delineated on a local general plan, specific plan or other land use plan?
No impact. The proposed Project will not affect any locally important mineral
resource recovery site.
28
XIII. NOISE
Would the Project Result in:
a) Generation of a substantial temporary or permanent increase in ambient noise
levels in the vicinity of the project in excess of standards established in the local
general plan or noise ordinance, or applicable standards of other agencies?
Less than Significant Impact. Operation of the proposed extraction wells may
increase current noise levels. An enclosure will cover the well to reduce noise
impacts.
b) Generation of excessive groundborne vibration or groundborne noise levels?
Less than Significant Impact. An increase in groundborne vibration or noise
levels may occur during the construction of the proposed Project. However, the
increased levels will be temporary and typical of construction activities.
Construction will be limited to the allowable hours per City ordinance. Operation
of the proposed Project will not result in an increase in groundborne vibration or
noise levels. There will be no significant impact.
c) For a project located within the vicinity of a private airstrip or an airport land use
plan or, where such a plan has not been adopted, within two miles of a public
airport or public use airport, would the project expose people residing or working
in the project area to excessive noise levels?
Less than Significant Impact. The San Gabriel Valley Airport is about 1.8 miles
southwest of the proposed Project. Ambient noise levels may increase temporarily
in the Project vicinity. Appropriate sound reduction measures will be provided to
ensure the noise level from the extraction wells does not exceed allowable levels.
Because the noise levels are temporary and consistent with normal operation
activity, there is no significant impact.
XIV.POPULATION AND HOUSING
Would the Project:
a) Induce substantial unplanned population growth in an area, either directly (for
example, by proposing new homes and businesses) or indirectly (for example,
through extension of roads or other infrastructure)?
No impact. The proposed Project will not have any population growth inducing
impact.
29
b) Displace substantial numbers of existing people or housing, necessitating the
construction of replacement housing elsewhere?
No Impact. The proposed Project will not displace any existing housing.
XV. PUBLIC SERVICES
Would the Project:
a) Result in substantial adverse physical impacts associated with the provision of
new or physically altered governmental facilities, need for new or physically altered
governmental facilities, the construction of which could cause significant
environmental impacts, in order to maintain acceptable service ratios, response
times or other performance objectives for any of the public services:
Fire Protection
Police Protection
Schools
Parks
Other Public Facilities
No impact. The proposed Project will not result in the need for new or physically
altered governmental facilities including fire protection, police protection, schools,
parks, or other public facilities.
XVI.RECREATION
Would the Project:
a) Increase the use of existing neighborhood and regional parks or other
recreational facilities such that substantial physical deterioration of the facility
would occur or be accelerated?
No impact. The proposed Project will not increase the use of existing
neighborhood and regional parks or other recreational facilities.
b) Does the project include recreational facilities or require the construction or
expansion of recreational facilities which might have an adverse physical effect on
the environment?
No impact. The proposed Project does not include the construction or expansion
of any recreational facilities.
30
XVII. TRANSPORTATION
Would the Project:
a) Conflict with a program, plan, ordinance or policy addressing the circulation
system, including transit, roadway, bicycle and pedestrian facilities?
Less than Significant. The Project would affect traffic patterns in the Project area
as a result of construction. Construction may require temporary lane closure
tapers. In accordance with the City, a proper on-site traffic circulation and control
will be designed into the development with implementation of City regulations,
impacts would be less than significant.
b) Conflict or be inconsistent with CEQA Guidelines Section 15064.3, subdivision
(b)?
No impact. The proposed Project will not result in any conflict or be inconsistent
with CEQA Guidelines.
c) Substantially increase hazards due to a geometric design feature (e.g., sharp
curves or dangerous intersections) or incompatible uses (e.g., farm equipment)?
No impact. There will be no changes to current roadway design that will cause
substantially increased hazards. The proposed Project will not substantially
increase hazards due to a design feature or incompatible uses.
d) Result in inadequate emergency access?
No impact. The proposed Project will not result in inadequate emergency access.
XVIII. TRIBAL CULTURAL RESOUCRES
a) Would the project cause a substantial adverse change in the significance of a
tribal cultural resource, defined in Public Resources Code section 21074 as
either a site, feature, place, cultural landscape that is geographically defined in
terms of the size and scope of the landscape, sacred place, or object with
cultural value to a California Native American tribe, and that is:
i) Listed or eligible for listing in the California Register of Historical
Resources, or in the local register of historical resources as defined in
Public Resources. Code Section 5020.1(k), or
Less Than Significant Impact. The proposed Project will not result in any
changes or adverse impacts to tribal cultural resources. The proposed Project area
is located within urban/developed land. In addition, the City has completed
consultation with the local tribe, Gabrieleño Band of Mission Indians – Kizh Nation,
31
and will be retaining an approved Native American Monitor prior to commencement
of any ground-disturbing activities to ensure proper handling of any potential tribal
cultural resources discovery. The following proposed Tribal Cultural Resources
(TCR) mitigation measures will be incorporated as part of the Project.
TCR-1: Retain a Native American Monitor Prior to Commencement of Ground-
Disturbing Activities
A. The project applicant/lead agency shall retain a Native American Monitor
from or approved by the Gabrieleño Band of Mission Indians – Kizh Nation.
The monitor shall be retained prior to the commencement of any “ground-
disturbing activity” for the subject project at all project locations (i.e., both
on-site and any off-site locations that are included in the project
description/definition and/or required in connection with the project, such as
public improvement work). “Ground-disturbing activity” shall include, but is
not limited to, demolition, pavement removal, potholing, auguring, grubbing,
tree removal, boring, grading, excavation, drilling, and trenching. Monitoring
of well drilling shall be limited to 50 feet below surface level if the monitor
determines the soils are still sensitive to potential Tribal Cultural Resources.
B. A copy of the executed monitoring agreement shall be submitted to the lead
agency prior to the earlier of the commencement of any ground-disturbing
activity, or the issuance of any permit necessary to commence a ground-
disturbing activity.
C.The monitor will complete daily monitoring logs that will provide descriptions
of the relevant ground-disturbing activities, the type of construction activities
performed, locations of ground-disturbing activities, soil types, cultural-
related materials, and any other facts, conditions, materials, or discoveries
of significance to the Tribe. Monitor logs will identify and describe any
discovered TCRs, including but not limited to, Native American cultural and
historical artifacts, remains, places of significance, etc., (collectively, tribal
cultural resources, or “TCR”), as well as any discovered Native American
(ancestral) human remains and burial goods. Copies of monitor logs will be
provided to the project applicant/lead agency upon written request to the
Tribe.
D. On-site tribal monitoring shall conclude upon the latter of the following (1)
written confirmation to the Kizh from a designated point of contact for the
project applicant/lead agency that all ground-disturbing activities and
phases that may involve ground-disturbing activities on the project site or in
connection with the project are complete; or (2) a determination and written
notification by the Kizh to the project applicant/lead agency that no future,
planned construction activity and/or development/construction phase at the
project site possesses the potential to impact Kizh TCRs.
32
TCR-2: Unanticipated Discovery of Tribal Cultural Resource Objects (Non-
Funerary/Non-Ceremonial)
A. Upon discovery of any TCRs, all construction activities in the immediate
vicinity of the discovery shall cease (i.e., not less than the surrounding 50
feet) and shall not resume for up to 48 hours until the discovered TCR has
been fully assessed by the Kizh monitor and/or Kizh archaeologist. The Kizh
will recover and retain all discovered TCRs in the form and/or manner the
Tribe deems appropriate, in the Tribe’s sole discretion, and for any purpose
the Tribe deems appropriate, including for educational, cultural and/or
historic purposes.
TCR-3: Unanticipated Discovery of Human Remains and Associated Funerary or
Ceremonial Objects
A. Native American human remains are defined in PRC 5097.98 (d)(1) as an
inhumation or cremation, and in any state of decomposition or skeletal
completeness. Funerary objects, called associated grave goods in Public
Resources Code Section 5097.98, are also to be treated according to this
statute.
B. If Native American human remains and/or grave goods are discovered or
recognized on the project site, then Public Resource Code 5097.9 as well
as Health and Safety Code Section 7050.5 shall be followed.
C. Human remains and grave/burial goods shall be treated alike per California
Public Resources Code section 5097.98(d)(1) and (2).
D.Preservation in place (i.e., avoidance) is the preferred manner of treatment
for discovered human remains and/or burial goods.
E. Any discovery of human remains/burial goods shall be kept confidential to
prevent further disturbance.
ii) A resource determined by the lead agency, in its discretion and
supported by substantial evidence, to be significant pursuant to criteria
set forth in subdivision (c) of Public Resources Code Section 5024.1. In
applying the criteria set forth in subdivision (c) of Public Resource Code
Section 5024.1, the lead agency shall consider the significance of the
resource to a California Native American tribe.
Less Than Significant Impact. The City has completed consultation with the
local tribe, Gabrieleno Band of Mission Indians – Kizh Nation, and will be retaining
an approved Native American Monitor prior to commencement of any ground-
disturbing activities to ensure proper handling of any potential tribal cultural
resources discovery. See proposed TCR mitigation measures above.
33
XIX. ULTILITIES AND SERVICE SYSTEMS
Would the Project:
a) Require or result in the relocation or construction of new or expanded water,
wastewater treatment or storm water drainage, electric power, natural gas, or
telecommunications facilities, the construction or relocation of which could cause
significant environmental effects?
No impact. The proposed Project includes construction of a new well that would
produce raw water to be treated and used as drinking water and will not cause
significant environmental effects.
b) Have sufficient water supplies available to serve the project and reasonably
foreseeable future development during normal, dry and multiple dry years from
existing entitlements and resources, or are new or expanded entitlements needed?
No impact. The proposed Project will not require new potable water supplies.
c) Result in a determination by the wastewater treatment provider which serves
or may serve the project that it has adequate capacity to serve the project’s
projected demand in addition to the provider’s existing commitments?
No impact. The proposed Project will not increase the existing demand to any
wastewater treatment provider.
d) Generate solid waste in excess of State or local standards, or in excess of the
capacity of local infrastructure, or otherwise impair the attainment of solid waste
reduction goals??
No impact. Construction of the proposed Project will only generate a minor
amount of solid waste and will not have any impact to the serving landfill.
e) Comply with federal, state, and local management and reduction statutes and
regulations related to solid waste?
No impact. The proposed Project will comply with federal, state, and local statues
and regulations related to solid waste.
XX. WILDFIRE
Would the project:
a) Substantially impair an adopted emergency response plan or emergency
evacuation plan?
34
No impact. The proposed Project will not substantially impair an adopted
emergency response plan or emergency evacuation plan.
b) Due to slope, prevailing winds, and other factors, exacerbate wildfire risks, and
thereby expose project occupants to, pollutant concentrations from a wildfire or
the uncontrolled spread of a wildfire?
No impact. The proposed Project will not exacerbate wildfire risks.
c) Require the installation or maintenance of associated infrastructure (such as
roads, fuel breaks, emergency water sources, power lines or other utilities) that
may exacerbate fire risk or that may result in temporary or ongoing impacts to
the environment?
No impact. The proposed Project will not require the installation or maintenance
of associated infrastructure that may exacerbate fire risks or that may result in
temporary or ongoing impacts to the environment.
d) Expose people or structures to significant risks, including downslope or
downstream flooding or landslides, as a result of runoff, post-fire slope
instability, or drainage changes?
No impact. The proposed Project will not expose people or structures to significant
risks.
XXI. MANDATORY FINDINGS OF SIGNIFICANCE
a) Does the project have the potential to substantially degrade the quality of the
environment, substantially reduce the habitat of a fish or wildlife species, cause a
fish or wildlife population to drop below self-sustaining levels, threaten to eliminate
a plant or animal community, substantially reduce the number or restrict the range
of a rare or endangered plant or animal or eliminate important examples of the
major periods of California history or prehistory?
No impact. The proposed Project does not have the potential to degrade the
quality of the environment.
b) Does the project have impacts that are individually limited, but cumulatively
considerable? ("Cumulatively Considerable" means that the incremental effects of
a project are considerable when viewed in connection with the effects of past
projects, the effects of other current projects, and the effects of probable future
projects)?
35
No impact. The proposed Project will be constructed in an area with other public
service facilities. The Project will not have impacts that are individually limited, but
cumulatively considerable.
c) Does the project have environmental effects which will cause substantial
adverse effects on human beings, either directly or indirectly?
No impact. The proposed Project does not have any environmental effects which
will cause substantial adverse effects on human beings, either directly or indirectly.
J:\2795\01\CEQA\Final Draft\Final Initial Environmental Study (February 2025).docx
Proposed GAC Treatment
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PFAS LGAC TREATMENT SYSTEM
PROJECT NO.:
SITE PLAN
Phase
1
2
3
4
5
6
7
8
9
Note:
Table 1
Arcadia Well and Pipeline Construction and PFAS Treatment Plant Construction Schedule
Phase Type Activity Phase Type Date Start Date End Working
Days
Well and Pipeline Construction Site Clean Up Site Preparation 9/16/2024 9/20/2024 5 Site Preparation
Pipeline Construction Pipeline Construction Construction 9/23/2024 11/15/2024 40
Well Construction Well Construction Construction 10/21/2024 2/7/2025 80
Well Test Equipment Test On-Site Test 2/10/2025 2/21/2025 10
Well Head Equipment Site Clean Up Site Preparation 2/24/2025 2/28/2025 5 Mobiliaztion
Well Head Construction Well Construction Construction 3/3/2025 6/11/2025 73*
Treatment Plant Site Preparation Site Clean Up Site Preparation 1/22/2025 1/26/2025 5
Treatment Plant Construction Treatment Plant Construction Construction 1/27/2025 5/16/2025 80
Treatment Plant Startup and Equipment Test On-Site Test 5/19/2025 5/23/2025 5 Testing
Duration of Well Head Construction schedule is 73 days in total; however, due to an intermittent working schedule,
the actural working time is 40 days. Air emission calculation relies on the 73-day timeframe for conservative reasons.
Project Start and End dates shown in the Construction Schedule is subject to change and would not have any impact to the air emissions and GHG emissions calculation results as long as the construction duration remains the same. J:12795\Air Emission\Table 1 -Schedule Arcadia Well Constmction and PFAS Treatment.xlsx
Table 2
The CalEEMod Model Calculated Air Emissions of All analyzed Air Pollutants and CHG Emissions
ROG NOx CO SO2
Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
lb/day lb/day lb/day lb/day lb/day lb/day lb/day lb/day lb/day lb/day MT/yr MT/yr MT/yr MT/yr MT/yr MT/yr
Onsite 1.094 11.578 10.960 0.021 0.023 0.484 0.507 0.003 0.445 0.447 0.000 4.643 4.643 0.002 0.000 4.681
Offsite 0.022 0.052 0.250 0.001 0.157 0.001 0.158 0.040 0.001 0.041 0.000 0.193 0.193 0.000 0.000 0.196
Total 1.116 11.630 11.209 0.022 0.181 0.484 0.665 0.043 0.446 0.488 0.000 4.836 4.836 0.002 0.000 4.877
Onsite 1.102 10.964 14.056 0.023 0.000 0.483 0.483 0.000 0.444 0.444 0.000 73.216 73.216 0.024 0.000 73.808
Offsite 0.015 0.084 0.168 0.001 0.106 0.001 0.106 0.027 0.001 0.028 0.000 2.479 2.479 0.000 0.000 2.545
Total 1.117 11.048 14.224 0.024 0.106 0.483 0.589 0.027 0.445 0.472 0.000 75.695 75.695 0.024 0.000 76.353
Onsite 0.835 8.734 5.395 0.014 4.528 0.348 4.877 2.484 0.321 2.804 0.000 6.190 6.190 0.002 0.000 6.240
Offsite 0.022 0.014 0.250 0.001 0.089 0.000 0.090 0.024 0.000 0.024 0.000 0.000 0.000 0.000 0.000 0.000
Total 0.857 8.748 5.645 0.015 4.618 0.349 4.967 2.508 0.321 2.829 0.000 6.190 6.190 0.002 0.000 6.240
Onsite 0.862 8.939 8.622 0.018 0.023 0.353 0.376 0.003 0.324 0.327 0.000 3.959 3.959 0.001 0.000 3.992
Offsite 0.007 0.042 0.077 0.000 0.029 0.000 0.029 0.008 0.000 0.008 0.000 0.085 0.085 0.000 0.000 0.087
Total 0.869 8.981 8.699 0.018 0.052 0.353 0.405 0.010 0.325 0.335 0.000 4.044 4.044 0.001 0.000 4.079
Operational Total 0.083 0.086 0.893 0.002 0.233 0.001 0.235 0.062 0.001 0.063 0.000 30.920 30.920 0.002 0.001 31.353
75 100 550 150 150 150 150 55 55 55
No No No No No No No No No No
55 50 550 150 150 150 150 55 55 55
No No No No No No No No No No
3,000
No No No No No No No No No No No
Note:
Source of Threshold - SCAQMD Air Quality Significance Thresholds - April 2019
lb/day - pound per dau
MT/yr - metric tons per year
Site
Preparation
Construction
Pump Test
unit
Treatment
Plant Test
75.701.12 2.51 0.45 2.83 0.00 75.7014.22 0.02 4.62 0.48 4.97
Source of CO2e Threshold - Draft Guidance Document – Interim CEQA Greenhouse Gas (GHG) Significance Threshold (SCAQMD, October 2008)
Phase
SCAQMD Construction
Threshold1
Exceed Threshold
Construction Maximum
Daily Emission
SCAQMD Operation
Threshold1
Exceed Threshold
Exceed Threshold
SCAQMD Operation
Threshold2
0.02 0.00 76.3511.63
J:\2795\AirEmission\Table2ͲArcadiaWellConstructionandPFASTreatmentPlantEmissionResults.xlsx
ATTACHMENT A
City of Arcadia
Air Emissions Report
Arcadia Well Construction and PFAS Treatment
Los Angeles-South Coast County, Annual
Project Characteristics - PFAS Treatment Plant and Goldring Well Construction.
Land Use - Construction site in a private owned property (approximately 5 acreages), actual construction area is less than 5000 square feet (less than 0.11
acreages).
Construction Phase - Required equipment and project schedule are based on the attached Well, Pipeline, and Treatment Plant construction and Schedule
Note: Schedule for well head construction is 73-day; however, the actual working time is 40 days due to an intermittent working schedule. Calculation is based
on the 73-day schedule for conservatve reasons.
Off-road Equipment - Required equipment and project schedule are based on the attached Well Construction Equipment and Schedule
Trips and VMT - Required equipment and project schedule are based on the attached Well, Pipeline, and Treatment Plant construction and Schedule
Construion in a small designated open area, no demolition and minimal grading
On-road Fugitive Dust - Required equipment and project schedule are based on the attached Well, Pipeline, and Treatment Plant construction and Schedule
Default is used
Demolition - Required equipment and project schedule are based on the attached Well Construction Equipment and Schedule
No demolition
Grading - Required equipment and project schedule are based on the attached Well, Pipeline, and Treatment Plant construction and Schedule
empty truck arrival, loaded truk departure
1.1 Land Usage
Land Uses Size Metric Lot Acreage Floor Surface Area Population
General Light Industry 5.00 1000sqft 0.11 5,000.00 0
1.2 Other Project Characteristics
Urbanization
Climate Zone
Urban
9
Wind Speed (m/s) Precipitation Freq (Days)2.2 33
1.3 User Entered Comments & Non-Default Data
1.0 Project Characteristics
Utility Company
2026Operational Year
CO2 Intensity
(lb/MWhr)
00CH4 Intensity
(lb/MWhr)
0N2O Intensity
(lb/MWhr)
CalEEMod Version: CalEEMod.2020.4.0 Date: 2/8/2024 9:59 AMPage 1 of 40
Arcadia Well Construction and PFAS Treatment - Los Angeles-South Coast County, Annual
EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Not Applied
Architectural Coating - Required equipment and project schedule are based on the attached Well, Pipeline, and Treatment Plant construction and Schedule
no architectural coatings
Vehicle Trips - Required equipment and project schedule are based on the attached Well, Pipeline, and Treatment Plant construction and Schedule
Default is used
Vehicle Emission Factors - Required equipment and project schedule are based on the attached Well, Pipeline, and Treatment Plant construction and
Schedule
Default is used
Vehicle Emission Factors - Required equipment and project schedule are based on the attached Well Construction Equipment and Sc hedule
Default is used
Vehicle Emission Factors - Required equipment and project schedule are based on the attached Well Construction Equipment and Sc hedule
Default is used
Road Dust - Required equipment and project schedule are based on the attached Well, Pipeline, and Treatment Plant construction and Schedule
Default is used
Woodstoves - The Project does not use Wooden stoves and hearths
Consumer Products - Default is used
Area Coating - Default is used
Landscape Equipment - Default is used
Energy Use - Default is used
Water And Wastewater - Default is used
Solid Waste - Default is used
Construction Off-road Equipment Mitigation - List treatment construcion and well construction
Table Name Column Name Default Value New Value
tblConstructionPhase NumDays 100.00 40.00
tblConstructionPhase NumDays 100.00 80.00
tblConstructionPhase NumDays 100.00 73.00
tblConstructionPhase NumDays 100.00 80.00
tblConstructionPhase NumDays 1.00 5.00
tblConstructionPhase NumDays 1.00 10.00
tblConstructionPhase NumDays 1.00 5.00
tblConstructionPhase NumDays 1.00 5.00
tblConstructionPhase NumDays 1.00 5.00
tblConstructionPhase PhaseEndDate 2/7/2025 11/15/2024
CalEEMod Version: CalEEMod.2020.4.0 Date: 2/8/2024 9:59 AMPage 2 of 40
Arcadia Well Construction and PFAS Treatment - Los Angeles-South Coast County, Annual
EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Not Applied
tblConstructionPhase PhaseEndDate 6/27/2025 2/7/2025
tblConstructionPhase PhaseEndDate 11/14/2025 6/11/2025
tblConstructionPhase PhaseEndDate 4/3/2026 5/16/2025
tblConstructionPhase PhaseEndDate 9/16/2024 9/20/2024
tblConstructionPhase PhaseEndDate 9/17/2024 2/21/2025
tblConstructionPhase PhaseEndDate 9/18/2024 3/1/2024
tblConstructionPhase PhaseEndDate 9/19/2024 9/25/2024
tblConstructionPhase PhaseEndDate 9/20/2024 5/23/2025
tblConstructionPhase PhaseStartDate 9/21/2024 9/23/2024
tblConstructionPhase PhaseStartDate 2/8/2025 10/21/2024
tblConstructionPhase PhaseStartDate 6/28/2025 3/3/2025
tblConstructionPhase PhaseStartDate 11/15/2025 1/27/2025
tblConstructionPhase PhaseStartDate 9/17/2024 2/10/2025
tblConstructionPhase PhaseStartDate 9/18/2024 2/24/2024
tblConstructionPhase PhaseStartDate 9/20/2024 5/19/2025
tblGrading AcresOfGrading 2.50 0.11
tblGrading AcresOfGrading 7.50 0.11
tblGrading AcresOfGrading 2.50 0.11
tblGrading AcresOfGrading 2.50 0.11
tblGrading AcresOfGrading 2.50 0.11
tblOffRoadEquipment OffRoadEquipmentUnitAmount 2.00 1.00
tblOffRoadEquipment OffRoadEquipmentUnitAmount 1.00 2.00
tblOffRoadEquipment OffRoadEquipmentUnitAmount 1.00 2.00
tblOffRoadEquipment OffRoadEquipmentUnitAmount 1.00 2.00
tblOffRoadEquipment UsageHours 8.00 6.00
tblOffRoadEquipment UsageHours 8.00 7.00
tblTripsAndVMT VendorTripNumber 1.00 0.00
tblTripsAndVMT VendorTripNumber 0.00 1.00
tblTripsAndVMT VendorTripNumber 0.00 1.00
CalEEMod Version: CalEEMod.2020.4.0 Date: 2/8/2024 9:59 AMPage 3 of 40
Arcadia Well Construction and PFAS Treatment - Los Angeles-South Coast County, Annual
EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Not Applied
2.0 Emissions Summary
tblTripsAndVMT VendorTripNumber 0.00 1.00
tblTripsAndVMT WorkerTripNumber 2.00 5.00
tblTripsAndVMT WorkerTripNumber 18.00 2.00
tblTripsAndVMT WorkerTripNumber 18.00 5.00
tblTripsAndVMT WorkerTripNumber 15.00 2.00
tblTripsAndVMT WorkerTripNumber 15.00 2.00
CalEEMod Version: CalEEMod.2020.4.0 Date: 2/8/2024 9:59 AMPage 4 of 40
Arcadia Well Construction and PFAS Treatment - Los Angeles-South Coast County, Annual
EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Not Applied
2.1 Overall Construction
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Year tons/yr MT/yr
2024 0.0385 0.3989 0.3788 7.4000e-
004
2.6000e-
003
0.0171 0.0197 6.6000e-
004
0.0158 0.0164 0.0000 65.1365 65.1365 0.0204 1.2000e-
004
65.6829
2025 0.0773 0.7680 0.9518 1.6200e-
003
0.0285 0.0333 0.0618 0.0140 0.0306 0.0446 0.0000 142.2509 142.2509 0.0446 3.9000e-
004
143.4816
Maximum 0.0773 0.7680 0.9518 1.6200e-
003
0.0285 0.0333 0.0618 0.0140 0.0306 0.0446 0.0000 142.2509 142.2509 0.0446 3.9000e-
004
143.4816
Unmitigated Construction
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Year tons/yr MT/yr
2024 0.0385 0.3989 0.3788 7.4000e-
004
2.6000e-
003
0.0171 0.0197 6.6000e-
004
0.0158 0.0164 0.0000 65.1365 65.1365 0.0204 1.2000e-
004
65.6829
2025 0.0773 0.7680 0.9518 1.6200e-
003
0.0285 0.0333 0.0618 0.0140 0.0306 0.0446 0.0000 142.2507 142.2507 0.0446 3.9000e-
004
143.4815
Maximum 0.0773 0.7680 0.9518 1.6200e-
003
0.0285 0.0333 0.0618 0.0140 0.0306 0.0446 0.0000 142.2507 142.2507 0.0446 3.9000e-
004
143.4815
Mitigated Construction
CalEEMod Version: CalEEMod.2020.4.0 Date: 2/8/2024 9:59 AMPage 5 of 40
Arcadia Well Construction and PFAS Treatment - Los Angeles-South Coast County, Annual
EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Not Applied
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio-CO2 Total CO2 CH4 N20 CO2e
Percent
Reduction
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Quarter Start Date End Date Maximum Unmitigated ROG + NOX (tons/quarter)Maximum Mitigated ROG + NOX (tons/quarter)
1 9-16-2024 12-15-2024 0.4729 0.4729
2 12-16-2024 3-15-2025 0.3224 0.3224
3 3-16-2025 6-15-2025 0.5346 0.5346
Highest 0.5346 0.5346
2.2 Overall Operational
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Area 0.0204 0.0000 6.0000e-
005
0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 1.2000e-
004
1.2000e-
004
0.0000 0.0000 1.3000e-
004
Energy 4.8000e-
004
4.4000e-
003
3.7000e-
003
3.0000e-
005
3.3000e-
004
3.3000e-
004
3.3000e-
004
3.3000e-
004
0.0000 4.7921 4.7921 9.0000e-
005
9.0000e-
005
4.8206
Mobile 0.0133 0.0156 0.1452 3.3000e-
004
0.0378 2.4000e-
004
0.0380 0.0101 2.2000e-
004
0.0103 0.0000 30.9196 30.9196 2.0200e-
003
1.2800e-
003
31.3527
Waste 0.0000 0.0000 0.0000 0.0000 1.2585 0.0000 1.2585 0.0744 0.0000 3.1180
Water 0.0000 0.0000 0.0000 0.0000 0.3668 0.0000 0.3668 0.0377 8.9000e-
004
1.5738
Total 0.0342 0.0200 0.1490 3.6000e-
004
0.0378 5.7000e-
004
0.0384 0.0101 5.5000e-
004
0.0106 1.6254 35.7117 37.3371 0.1142 2.2600e-
003
40.8652
Unmitigated Operational
CalEEMod Version: CalEEMod.2020.4.0 Date: 2/8/2024 9:59 AMPage 6 of 40
Arcadia Well Construction and PFAS Treatment - Los Angeles-South Coast County, Annual
EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Not Applied
2.2 Overall Operational
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Area 0.0204 0.0000 6.0000e-
005
0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 1.2000e-
004
1.2000e-
004
0.0000 0.0000 1.3000e-
004
Energy 4.8000e-
004
4.4000e-
003
3.7000e-
003
3.0000e-
005
3.3000e-
004
3.3000e-
004
3.3000e-
004
3.3000e-
004
0.0000 4.7921 4.7921 9.0000e-
005
9.0000e-
005
4.8206
Mobile 0.0133 0.0156 0.1452 3.3000e-
004
0.0378 2.4000e-
004
0.0380 0.0101 2.2000e-
004
0.0103 0.0000 30.9196 30.9196 2.0200e-
003
1.2800e-
003
31.3527
Waste 0.0000 0.0000 0.0000 0.0000 1.2585 0.0000 1.2585 0.0744 0.0000 3.1180
Water 0.0000 0.0000 0.0000 0.0000 0.3668 0.0000 0.3668 0.0377 8.9000e-
004
1.5738
Total 0.0342 0.0200 0.1490 3.6000e-
004
0.0378 5.7000e-
004
0.0384 0.0101 5.5000e-
004
0.0106 1.6254 35.7117 37.3371 0.1142 2.2600e-
003
40.8652
Mitigated Operational
3.0 Construction Detail
Construction Phase
Phase
Number
Phase Name Phase Type Start Date End Date Num Days
Week
Num Days Phase Description
1 Well and Pipeline Construction
Mobilization
Site Preparation 9/16/2024 9/20/2024 5 5 Site preparation and mobilization
2 Pump Test Site Preparation 2/10/2025 2/21/2025 5 10 Well Pump Test
3 Well Head Equipment Mobilization Site Preparation 2/24/2024 3/1/2024 5 5 Mobilization
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio-CO2 Total CO2 CH4 N20 CO2e
Percent
Reduction
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
CalEEMod Version: CalEEMod.2020.4.0 Date: 2/8/2024 9:59 AMPage 7 of 40
Arcadia Well Construction and PFAS Treatment - Los Angeles-South Coast County, Annual
EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Not Applied
4 PFAS Treatment Plant Mobilization Site Preparation 9/19/2024 9/25/2024 5 5 Site Preparation and Mobilization
5 Treatment Plant Startup and
Testing
Site Preparation 5/19/2025 5/23/2025 5 5 Well Equipment Procurement
6 Pipeline Construction Building Construction 9/23/2024 11/15/2024 5 40 Pipeline Construction
7 Well Construction Building Construction 10/21/2024 2/7/2025 5 80 Site Clean Up and Preparation
8 Well Head Construction Building Construction 3/3/2025 6/11/2025 5 73 Well Head Construction
9 PFAS Treatment Plant
Construction
Building Construction 1/27/2025 5/16/2025 5 80 Well Equiping Support
OffRoad Equipment
Phase Name Offroad Equipment Type Amount Usage Hours Horse Power Load Factor
Well and Pipeline Construction
Mobilization
Graders 1 8.00 187 0.41
Well and Pipeline Construction
Mobilization
Tractors/Loaders/Backhoes 1 8.00 97 0.37
Pipeline Construction Cranes 1 4.00 231 0.29
Pipeline Construction Forklifts 2 6.00 89 0.20
Pipeline Construction Graders 1 8.00 187 0.41
Pipeline Construction Tractors/Loaders/Backhoes 1 8.00 97 0.37
Well Construction Cranes 1 4.00 231 0.29
Well Construction Forklifts 2 6.00 89 0.20
Well Construction Tractors/Loaders/Backhoes 2 8.00 97 0.37
Pump Test Graders 1 6.00 187 0.41
Pump Test Rubber Tired Dozers 1 6.00 247 0.40
Pump Test Tractors/Loaders/Backhoes 1 7.00 97 0.37
Well Head Equipment Mobilization Cranes 1 4.00 231 0.29
Residential Indoor: 0; Residential Outdoor: 0; Non-Residential Indoor: 0; Non-Residential Outdoor: 0; Striped Parking Area: 0 (Architectural
Coating – sqft)
Acres of Grading (Site Preparation Phase): 0.11
Acres of Grading (Grading Phase): 0
Acres of Paving: 0
CalEEMod Version: CalEEMod.2020.4.0 Date: 2/8/2024 9:59 AMPage 8 of 40
Arcadia Well Construction and PFAS Treatment - Los Angeles-South Coast County, Annual
EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Not Applied
Well Head Equipment Mobilization Forklifts 2 6.00 89 0.20
Well Head Equipment Mobilization Graders 1 8.00 187 0.41
Well Head Equipment Mobilization Tractors/Loaders/Backhoes 2 8.00 97 0.37
Well Head Equipment Mobilization Tractors/Loaders/Backhoes 1 8.00 97 0.37
Well Head Construction Cranes 1 4.00 231 0.29
Well Head Construction Cranes 1 4.00 231 0.29
Well Head Construction Forklifts 2 6.00 89 0.20
Well Head Construction Forklifts 2 6.00 89 0.20
Well Head Construction Tractors/Loaders/Backhoes 2 8.00 97 0.37
Well Head Construction Tractors/Loaders/Backhoes 2 8.00 97 0.37
PFAS Treatment Plant Mobilization Cranes 1 4.00 231 0.29
PFAS Treatment Plant Mobilization Forklifts 2 6.00 89 0.20
PFAS Treatment Plant Mobilization Graders 1 8.00 187 0.41
PFAS Treatment Plant Mobilization Tractors/Loaders/Backhoes 2 8.00 97 0.37
PFAS Treatment Plant Construction Cranes 1 4.00 231 0.29
PFAS Treatment Plant Construction Forklifts 2 6.00 89 0.20
PFAS Treatment Plant Construction Tractors/Loaders/Backhoes 2 8.00 97 0.37
Treatment Plant Startup and Testing Cranes 1 4.00 231 0.29
Treatment Plant Startup and Testing Forklifts 2 6.00 89 0.20
Treatment Plant Startup and Testing Graders 1 8.00 187 0.41
Treatment Plant Startup and Testing Tractors/Loaders/Backhoes 2 8.00 97 0.37
Trips and VMT
Phase Name Offroad Equipment
Count
Worker Trip
Number
Vendor Trip
Number
Hauling Trip
Number
Worker Trip
Length
Vendor Trip
Length
Hauling Trip
Length
Worker Vehicle
Class
Vendor
Vehicle Class
Hauling
Vehicle Class
Well and Pipeline
Construction Mobilization
2 5.00 0.00 0.00 14.70 6.90 20.00 LD_Mix HDT_Mix HHDT
Pipeline Construction 5 5.00 0.00 0.00 14.70 6.90 20.00 LD_Mix HDT_Mix HHDT
Well Construction 5 2.00 1.00 0.00 14.70 6.90 20.00 LD_Mix HDT_Mix HHDT
CalEEMod Version: CalEEMod.2020.4.0 Date: 2/8/2024 9:59 AMPage 9 of 40
Arcadia Well Construction and PFAS Treatment - Los Angeles-South Coast County, Annual
EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Not Applied
3.2 Well and Pipeline Construction Mobilization - 2024
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Fugitive Dust 6.0000e-
005
0.0000 6.0000e-
005
1.0000e-
005
0.0000 1.0000e-
005
0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Off-Road 1.2500e-
003
0.0140 9.7300e-
003
2.0000e-
005
5.0000e-
004
5.0000e-
004
4.6000e-
004
4.6000e-
004
0.0000 2.1370 2.1370 6.9000e-
004
0.0000 2.1543
Total 1.2500e-
003
0.0140 9.7300e-
003
2.0000e-
005
6.0000e-
005
5.0000e-
004
5.6000e-
004
1.0000e-
005
4.6000e-
004
4.7000e-
004
0.0000 2.1370 2.1370 6.9000e-
004
0.0000 2.1543
Unmitigated Construction On-Site
3.1 Mitigation Measures Construction
Pump Test 3 8.00 0.00 0.00 14.70 6.90 20.00 LD_Mix HDT_Mix HHDT
Well Head Equipment
Mobilization
7 2.00 1.00 0.00 14.70 6.90 20.00 LD_Mix HDT_Mix HHDT
Well Head Equipment
Mobilization 7 5.00 0.00 0.00 14.70 6.90 20.00 LD_Mix HDT_Mix HHDT
Well Head
Construction
10 2.00 1.00 0.00 14.70 6.90 20.00 LD_Mix HDT_Mix HHDT
Well Head
Construction
10 2.00 1.00 0.00 14.70 6.90 20.00 LD_Mix HDT_Mix HHDT
PFAS Treatment Plant
Mobilization
6 2.00 1.00 0.00 14.70 6.90 20.00 LD_Mix HDT_Mix HHDT
PFAS Treatment Plant
Construction 5 2.00 1.00 0.00 14.70 6.90 20.00 LD_Mix HDT_Mix HHDT
Treatment Plant
Startup and Testing
6 2.00 1.00 0.00 14.70 6.90 20.00 LD_Mix HDT_Mix HHDT
CalEEMod Version: CalEEMod.2020.4.0 Date: 2/8/2024 9:59 AMPage 10 of 40
Arcadia Well Construction and PFAS Treatment - Los Angeles-South Coast County, Annual
EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Not Applied
3.2 Well and Pipeline Construction Mobilization - 2024
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Worker 4.0000e-
005
3.0000e-
005
4.0000e-
004
0.0000 1.4000e-
004
0.0000 1.4000e-
004
4.0000e-
005
0.0000 4.0000e-
005
0.0000 0.1060 0.1060 0.0000 0.0000 0.1068
Total 4.0000e-
005
3.0000e-
005
4.0000e-
004
0.0000 1.4000e-
004
0.0000 1.4000e-
004
4.0000e-
005
0.0000 4.0000e-
005
0.0000 0.1060 0.1060 0.0000 0.0000 0.1068
Unmitigated Construction Off-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Fugitive Dust 6.0000e-
005
0.0000 6.0000e-
005
1.0000e-
005
0.0000 1.0000e-
005
0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Off-Road 1.2500e-
003
0.0140 9.7300e-
003
2.0000e-
005
5.0000e-
004
5.0000e-
004
4.6000e-
004
4.6000e-
004
0.0000 2.1370 2.1370 6.9000e-
004
0.0000 2.1543
Total 1.2500e-
003
0.0140 9.7300e-
003
2.0000e-
005
6.0000e-
005
5.0000e-
004
5.6000e-
004
1.0000e-
005
4.6000e-
004
4.7000e-
004
0.0000 2.1370 2.1370 6.9000e-
004
0.0000 2.1543
Mitigated Construction On-Site
CalEEMod Version: CalEEMod.2020.4.0 Date: 2/8/2024 9:59 AMPage 11 of 40
Arcadia Well Construction and PFAS Treatment - Los Angeles-South Coast County, Annual
EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Not Applied
3.2 Well and Pipeline Construction Mobilization - 2024
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Worker 4.0000e-
005
3.0000e-
005
4.0000e-
004
0.0000 1.4000e-
004
0.0000 1.4000e-
004
4.0000e-
005
0.0000 4.0000e-
005
0.0000 0.1060 0.1060 0.0000 0.0000 0.1068
Total 4.0000e-
005
3.0000e-
005
4.0000e-
004
0.0000 1.4000e-
004
0.0000 1.4000e-
004
4.0000e-
005
0.0000 4.0000e-
005
0.0000 0.1060 0.1060 0.0000 0.0000 0.1068
Mitigated Construction Off-Site
3.3 Pump Test - 2025
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Fugitive Dust 0.0226 0.0000 0.0226 0.0124 0.0000 0.0124 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Off-Road 4.1700e-
003
0.0437 0.0270 7.0000e-
005
1.7400e-
003
1.7400e-
003
1.6000e-
003
1.6000e-
003
0.0000 6.1902 6.1902 2.0000e-
003
0.0000 6.2402
Total 4.1700e-
003
0.0437 0.0270 7.0000e-
005
0.0226 1.7400e-
003
0.0244 0.0124 1.6000e-
003
0.0140 0.0000 6.1902 6.1902 2.0000e-
003
0.0000 6.2402
Unmitigated Construction On-Site
CalEEMod Version: CalEEMod.2020.4.0 Date: 2/8/2024 9:59 AMPage 12 of 40
Arcadia Well Construction and PFAS Treatment - Los Angeles-South Coast County, Annual
EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Not Applied
3.3 Pump Test - 2025
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Worker 1.1000e-
004
8.0000e-
005
1.1800e-
003
0.0000 4.4000e-
004
0.0000 4.4000e-
004
1.2000e-
004
0.0000 1.2000e-
004
0.0000 0.3275 0.3275 1.0000e-
005
1.0000e-
005
0.3301
Total 1.1000e-
004
8.0000e-
005
1.1800e-
003
0.0000 4.4000e-
004
0.0000 4.4000e-
004
1.2000e-
004
0.0000 1.2000e-
004
0.0000 0.3275 0.3275 1.0000e-
005
1.0000e-
005
0.3301
Unmitigated Construction Off-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Fugitive Dust 0.0226 0.0000 0.0226 0.0124 0.0000 0.0124 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Off-Road 4.1700e-
003
0.0437 0.0270 7.0000e-
005
1.7400e-
003
1.7400e-
003
1.6000e-
003
1.6000e-
003
0.0000 6.1902 6.1902 2.0000e-
003
0.0000 6.2402
Total 4.1700e-
003
0.0437 0.0270 7.0000e-
005
0.0226 1.7400e-
003
0.0244 0.0124 1.6000e-
003
0.0140 0.0000 6.1902 6.1902 2.0000e-
003
0.0000 6.2402
Mitigated Construction On-Site
CalEEMod Version: CalEEMod.2020.4.0 Date: 2/8/2024 9:59 AMPage 13 of 40
Arcadia Well Construction and PFAS Treatment - Los Angeles-South Coast County, Annual
EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Not Applied
3.3 Pump Test - 2025
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Worker 1.1000e-
004
8.0000e-
005
1.1800e-
003
0.0000 4.4000e-
004
0.0000 4.4000e-
004
1.2000e-
004
0.0000 1.2000e-
004
0.0000 0.3275 0.3275 1.0000e-
005
1.0000e-
005
0.3301
Total 1.1000e-
004
8.0000e-
005
1.1800e-
003
0.0000 4.4000e-
004
0.0000 4.4000e-
004
1.2000e-
004
0.0000 1.2000e-
004
0.0000 0.3275 0.3275 1.0000e-
005
1.0000e-
005
0.3301
Mitigated Construction Off-Site
3.4 Well Head Equipment Mobilization - 2024
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Fugitive Dust 6.0000e-
005
0.0000 6.0000e-
005
1.0000e-
005
0.0000 1.0000e-
005
0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Off-Road 2.7300e-
003
0.0289 0.0274 5.0000e-
005
1.2100e-
003
1.2100e-
003
1.1100e-
003
1.1100e-
003
0.0000 4.6431 4.6431 1.5000e-
003
0.0000 4.6806
Total 2.7300e-
003
0.0289 0.0274 5.0000e-
005
6.0000e-
005
1.2100e-
003
1.2700e-
003
1.0000e-
005
1.1100e-
003
1.1200e-
003
0.0000 4.6431 4.6431 1.5000e-
003
0.0000 4.6806
Unmitigated Construction On-Site
CalEEMod Version: CalEEMod.2020.4.0 Date: 2/8/2024 9:59 AMPage 14 of 40
Arcadia Well Construction and PFAS Treatment - Los Angeles-South Coast County, Annual
EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Not Applied
3.4 Well Head Equipment Mobilization - 2024
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Vendor 0.0000 1.0000e-
004
4.0000e-
005
0.0000 3.0000e-
005
0.0000 3.0000e-
005
1.0000e-
005
0.0000 1.0000e-
005
0.0000 0.0448 0.0448 0.0000 1.0000e-
005
0.0467
Worker 5.0000e-
005
4.0000e-
005
5.5000e-
004
0.0000 3.6000e-
004
0.0000 3.6000e-
004
9.0000e-
005
0.0000 9.0000e-
005
0.0000 0.1483 0.1483 0.0000 0.0000 0.1495
Total 5.0000e-
005
1.4000e-
004
5.9000e-
004
0.0000 3.9000e-
004
0.0000 3.9000e-
004
1.0000e-
004
0.0000 1.0000e-
004
0.0000 0.1931 0.1931 0.0000 1.0000e-
005
0.1963
Unmitigated Construction Off-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Fugitive Dust 6.0000e-
005
0.0000 6.0000e-
005
1.0000e-
005
0.0000 1.0000e-
005
0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Off-Road 2.7300e-
003
0.0289 0.0274 5.0000e-
005
1.2100e-
003
1.2100e-
003
1.1100e-
003
1.1100e-
003
0.0000 4.6431 4.6431 1.5000e-
003
0.0000 4.6806
Total 2.7300e-
003
0.0289 0.0274 5.0000e-
005
6.0000e-
005
1.2100e-
003
1.2700e-
003
1.0000e-
005
1.1100e-
003
1.1200e-
003
0.0000 4.6431 4.6431 1.5000e-
003
0.0000 4.6806
Mitigated Construction On-Site
CalEEMod Version: CalEEMod.2020.4.0 Date: 2/8/2024 9:59 AMPage 15 of 40
Arcadia Well Construction and PFAS Treatment - Los Angeles-South Coast County, Annual
EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Not Applied
3.4 Well Head Equipment Mobilization - 2024
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Vendor 0.0000 1.0000e-
004
4.0000e-
005
0.0000 3.0000e-
005
0.0000 3.0000e-
005
1.0000e-
005
0.0000 1.0000e-
005
0.0000 0.0448 0.0448 0.0000 1.0000e-
005
0.0467
Worker 5.0000e-
005
4.0000e-
005
5.5000e-
004
0.0000 3.6000e-
004
0.0000 3.6000e-
004
9.0000e-
005
0.0000 9.0000e-
005
0.0000 0.1483 0.1483 0.0000 0.0000 0.1495
Total 5.0000e-
005
1.4000e-
004
5.9000e-
004
0.0000 3.9000e-
004
0.0000 3.9000e-
004
1.0000e-
004
0.0000 1.0000e-
004
0.0000 0.1931 0.1931 0.0000 1.0000e-
005
0.1963
Mitigated Construction Off-Site
3.5 PFAS Treatment Plant Mobilization - 2024
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Fugitive Dust 6.0000e-
005
0.0000 6.0000e-
005
1.0000e-
005
0.0000 1.0000e-
005
0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Off-Road 2.3700e-
003
0.0253 0.0218 5.0000e-
005
1.0400e-
003
1.0400e-
003
9.6000e-
004
9.6000e-
004
0.0000 3.9587 3.9587 1.2800e-
003
0.0000 3.9907
Total 2.3700e-
003
0.0253 0.0218 5.0000e-
005
6.0000e-
005
1.0400e-
003
1.1000e-
003
1.0000e-
005
9.6000e-
004
9.7000e-
004
0.0000 3.9587 3.9587 1.2800e-
003
0.0000 3.9907
Unmitigated Construction On-Site
CalEEMod Version: CalEEMod.2020.4.0 Date: 2/8/2024 9:59 AMPage 16 of 40
Arcadia Well Construction and PFAS Treatment - Los Angeles-South Coast County, Annual
EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Not Applied
3.5 PFAS Treatment Plant Mobilization - 2024
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Vendor 0.0000 1.0000e-
004
4.0000e-
005
0.0000 2.0000e-
005
0.0000 2.0000e-
005
0.0000 0.0000 1.0000e-
005
0.0000 0.0448 0.0448 0.0000 1.0000e-
005
0.0467
Worker 1.0000e-
005
1.0000e-
005
1.6000e-
004
0.0000 5.0000e-
005
0.0000 6.0000e-
005
1.0000e-
005
0.0000 1.0000e-
005
0.0000 0.0424 0.0424 0.0000 0.0000 0.0427
Total 1.0000e-
005
1.1000e-
004
2.0000e-
004
0.0000 7.0000e-
005
0.0000 8.0000e-
005
1.0000e-
005
0.0000 2.0000e-
005
0.0000 0.0872 0.0872 0.0000 1.0000e-
005
0.0895
Unmitigated Construction Off-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Fugitive Dust 6.0000e-
005
0.0000 6.0000e-
005
1.0000e-
005
0.0000 1.0000e-
005
0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Off-Road 2.3700e-
003
0.0253 0.0218 5.0000e-
005
1.0400e-
003
1.0400e-
003
9.6000e-
004
9.6000e-
004
0.0000 3.9587 3.9587 1.2800e-
003
0.0000 3.9907
Total 2.3700e-
003
0.0253 0.0218 5.0000e-
005
6.0000e-
005
1.0400e-
003
1.1000e-
003
1.0000e-
005
9.6000e-
004
9.7000e-
004
0.0000 3.9587 3.9587 1.2800e-
003
0.0000 3.9907
Mitigated Construction On-Site
CalEEMod Version: CalEEMod.2020.4.0 Date: 2/8/2024 9:59 AMPage 17 of 40
Arcadia Well Construction and PFAS Treatment - Los Angeles-South Coast County, Annual
EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Not Applied
3.5 PFAS Treatment Plant Mobilization - 2024
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Vendor 0.0000 1.0000e-
004
4.0000e-
005
0.0000 2.0000e-
005
0.0000 2.0000e-
005
0.0000 0.0000 1.0000e-
005
0.0000 0.0448 0.0448 0.0000 1.0000e-
005
0.0467
Worker 1.0000e-
005
1.0000e-
005
1.6000e-
004
0.0000 5.0000e-
005
0.0000 6.0000e-
005
1.0000e-
005
0.0000 1.0000e-
005
0.0000 0.0424 0.0424 0.0000 0.0000 0.0427
Total 1.0000e-
005
1.1000e-
004
2.0000e-
004
0.0000 7.0000e-
005
0.0000 8.0000e-
005
1.0000e-
005
0.0000 2.0000e-
005
0.0000 0.0872 0.0872 0.0000 1.0000e-
005
0.0895
Mitigated Construction Off-Site
3.6 Treatment Plant Startup and Testing - 2025
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Fugitive Dust 6.0000e-
005
0.0000 6.0000e-
005
1.0000e-
005
0.0000 1.0000e-
005
0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Off-Road 2.1600e-
003
0.0224 0.0216 5.0000e-
005
8.8000e-
004
8.8000e-
004
8.1000e-
004
8.1000e-
004
0.0000 3.9594 3.9594 1.2800e-
003
0.0000 3.9915
Total 2.1600e-
003
0.0224 0.0216 5.0000e-
005
6.0000e-
005
8.8000e-
004
9.4000e-
004
1.0000e-
005
8.1000e-
004
8.2000e-
004
0.0000 3.9594 3.9594 1.2800e-
003
0.0000 3.9915
Unmitigated Construction On-Site
CalEEMod Version: CalEEMod.2020.4.0 Date: 2/8/2024 9:59 AMPage 18 of 40
Arcadia Well Construction and PFAS Treatment - Los Angeles-South Coast County, Annual
EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Not Applied
3.6 Treatment Plant Startup and Testing - 2025
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Vendor 0.0000 1.0000e-
004
4.0000e-
005
0.0000 2.0000e-
005
0.0000 2.0000e-
005
0.0000 0.0000 1.0000e-
005
0.0000 0.0440 0.0440 0.0000 1.0000e-
005
0.0459
Worker 1.0000e-
005
1.0000e-
005
1.5000e-
004
0.0000 5.0000e-
005
0.0000 6.0000e-
005
1.0000e-
005
0.0000 1.0000e-
005
0.0000 0.0409 0.0409 0.0000 0.0000 0.0413
Total 1.0000e-
005
1.1000e-
004
1.9000e-
004
0.0000 7.0000e-
005
0.0000 8.0000e-
005
1.0000e-
005
0.0000 2.0000e-
005
0.0000 0.0849 0.0849 0.0000 1.0000e-
005
0.0872
Unmitigated Construction Off-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Fugitive Dust 6.0000e-
005
0.0000 6.0000e-
005
1.0000e-
005
0.0000 1.0000e-
005
0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Off-Road 2.1600e-
003
0.0224 0.0216 5.0000e-
005
8.8000e-
004
8.8000e-
004
8.1000e-
004
8.1000e-
004
0.0000 3.9594 3.9594 1.2800e-
003
0.0000 3.9914
Total 2.1600e-
003
0.0224 0.0216 5.0000e-
005
6.0000e-
005
8.8000e-
004
9.4000e-
004
1.0000e-
005
8.1000e-
004
8.2000e-
004
0.0000 3.9594 3.9594 1.2800e-
003
0.0000 3.9914
Mitigated Construction On-Site
CalEEMod Version: CalEEMod.2020.4.0 Date: 2/8/2024 9:59 AMPage 19 of 40
Arcadia Well Construction and PFAS Treatment - Los Angeles-South Coast County, Annual
EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Not Applied
3.6 Treatment Plant Startup and Testing - 2025
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Vendor 0.0000 1.0000e-
004
4.0000e-
005
0.0000 2.0000e-
005
0.0000 2.0000e-
005
0.0000 0.0000 1.0000e-
005
0.0000 0.0440 0.0440 0.0000 1.0000e-
005
0.0459
Worker 1.0000e-
005
1.0000e-
005
1.5000e-
004
0.0000 5.0000e-
005
0.0000 6.0000e-
005
1.0000e-
005
0.0000 1.0000e-
005
0.0000 0.0409 0.0409 0.0000 0.0000 0.0413
Total 1.0000e-
005
1.1000e-
004
1.9000e-
004
0.0000 7.0000e-
005
0.0000 8.0000e-
005
1.0000e-
005
0.0000 2.0000e-
005
0.0000 0.0849 0.0849 0.0000 1.0000e-
005
0.0872
Mitigated Construction Off-Site
3.7 Pipeline Construction - 2024
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Off-Road 0.0161 0.1736 0.1298 3.0000e-
004
7.0100e-
003
7.0100e-
003
6.4500e-
003
6.4500e-
003
0.0000 26.1945 26.1945 8.4700e-
003
0.0000 26.4063
Total 0.0161 0.1736 0.1298 3.0000e-
004
7.0100e-
003
7.0100e-
003
6.4500e-
003
6.4500e-
003
0.0000 26.1945 26.1945 8.4700e-
003
0.0000 26.4063
Unmitigated Construction On-Site
CalEEMod Version: CalEEMod.2020.4.0 Date: 2/8/2024 9:59 AMPage 20 of 40
Arcadia Well Construction and PFAS Treatment - Los Angeles-South Coast County, Annual
EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Not Applied
3.7 Pipeline Construction - 2024
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Worker 3.0000e-
004
2.2000e-
004
3.1700e-
003
1.0000e-
005
1.1000e-
003
1.0000e-
005
1.1000e-
003
2.9000e-
004
1.0000e-
005
3.0000e-
004
0.0000 0.8476 0.8476 2.0000e-
005
2.0000e-
005
0.8544
Total 3.0000e-
004
2.2000e-
004
3.1700e-
003
1.0000e-
005
1.1000e-
003
1.0000e-
005
1.1000e-
003
2.9000e-
004
1.0000e-
005
3.0000e-
004
0.0000 0.8476 0.8476 2.0000e-
005
2.0000e-
005
0.8544
Unmitigated Construction Off-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Off-Road 0.0161 0.1736 0.1298 3.0000e-
004
7.0100e-
003
7.0100e-
003
6.4500e-
003
6.4500e-
003
0.0000 26.1945 26.1945 8.4700e-
003
0.0000 26.4063
Total 0.0161 0.1736 0.1298 3.0000e-
004
7.0100e-
003
7.0100e-
003
6.4500e-
003
6.4500e-
003
0.0000 26.1945 26.1945 8.4700e-
003
0.0000 26.4063
Mitigated Construction On-Site
CalEEMod Version: CalEEMod.2020.4.0 Date: 2/8/2024 9:59 AMPage 21 of 40
Arcadia Well Construction and PFAS Treatment - Los Angeles-South Coast County, Annual
EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Not Applied
3.7 Pipeline Construction - 2024
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Worker 3.0000e-
004
2.2000e-
004
3.1700e-
003
1.0000e-
005
1.1000e-
003
1.0000e-
005
1.1000e-
003
2.9000e-
004
1.0000e-
005
3.0000e-
004
0.0000 0.8476 0.8476 2.0000e-
005
2.0000e-
005
0.8544
Total 3.0000e-
004
2.2000e-
004
3.1700e-
003
1.0000e-
005
1.1000e-
003
1.0000e-
005
1.1000e-
003
2.9000e-
004
1.0000e-
005
3.0000e-
004
0.0000 0.8476 0.8476 2.0000e-
005
2.0000e-
005
0.8544
Mitigated Construction Off-Site
3.8 Well Construction - 2024
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Off-Road 0.0155 0.1553 0.1838 3.0000e-
004
7.3400e-
003
7.3400e-
003
6.7500e-
003
6.7500e-
003
0.0000 26.0630 26.0630 8.4300e-
003
0.0000 26.2738
Total 0.0155 0.1553 0.1838 3.0000e-
004
7.3400e-
003
7.3400e-
003
6.7500e-
003
6.7500e-
003
0.0000 26.0630 26.0630 8.4300e-
003
0.0000 26.2738
Unmitigated Construction On-Site
CalEEMod Version: CalEEMod.2020.4.0 Date: 2/8/2024 9:59 AMPage 22 of 40
Arcadia Well Construction and PFAS Treatment - Los Angeles-South Coast County, Annual
EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Not Applied
3.8 Well Construction - 2024
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Vendor 3.0000e-
005
1.0500e-
003
3.8000e-
004
0.0000 1.6000e-
004
1.0000e-
005
1.7000e-
004
5.0000e-
005
0.0000 5.0000e-
005
0.0000 0.4657 0.4657 2.0000e-
005
7.0000e-
005
0.4860
Worker 1.5000e-
004
1.2000e-
004
1.6500e-
003
0.0000 5.7000e-
004
0.0000 5.7000e-
004
1.5000e-
004
0.0000 1.5000e-
004
0.0000 0.4407 0.4407 1.0000e-
005
1.0000e-
005
0.4443
Total 1.8000e-
004
1.1700e-
003
2.0300e-
003
0.0000 7.3000e-
004
1.0000e-
005
7.4000e-
004
2.0000e-
004
0.0000 2.0000e-
004
0.0000 0.9064 0.9064 3.0000e-
005
8.0000e-
005
0.9303
Unmitigated Construction Off-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Off-Road 0.0155 0.1553 0.1838 3.0000e-
004
7.3400e-
003
7.3400e-
003
6.7500e-
003
6.7500e-
003
0.0000 26.0630 26.0630 8.4300e-
003
0.0000 26.2737
Total 0.0155 0.1553 0.1838 3.0000e-
004
7.3400e-
003
7.3400e-
003
6.7500e-
003
6.7500e-
003
0.0000 26.0630 26.0630 8.4300e-
003
0.0000 26.2737
Mitigated Construction On-Site
CalEEMod Version: CalEEMod.2020.4.0 Date: 2/8/2024 9:59 AMPage 23 of 40
Arcadia Well Construction and PFAS Treatment - Los Angeles-South Coast County, Annual
EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Not Applied
3.8 Well Construction - 2024
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Vendor 3.0000e-
005
1.0500e-
003
3.8000e-
004
0.0000 1.6000e-
004
1.0000e-
005
1.7000e-
004
5.0000e-
005
0.0000 5.0000e-
005
0.0000 0.4657 0.4657 2.0000e-
005
7.0000e-
005
0.4860
Worker 1.5000e-
004
1.2000e-
004
1.6500e-
003
0.0000 5.7000e-
004
0.0000 5.7000e-
004
1.5000e-
004
0.0000 1.5000e-
004
0.0000 0.4407 0.4407 1.0000e-
005
1.0000e-
005
0.4443
Total 1.8000e-
004
1.1700e-
003
2.0300e-
003
0.0000 7.3000e-
004
1.0000e-
005
7.4000e-
004
2.0000e-
004
0.0000 2.0000e-
004
0.0000 0.9064 0.9064 3.0000e-
005
8.0000e-
005
0.9303
Mitigated Construction Off-Site
3.8 Well Construction - 2025
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Off-Road 7.7100e-
003
0.0768 0.0984 1.6000e-
004
3.3800e-
003
3.3800e-
003
3.1100e-
003
3.1100e-
003
0.0000 14.0414 14.0414 4.5400e-
003
0.0000 14.1549
Total 7.7100e-
003
0.0768 0.0984 1.6000e-
004
3.3800e-
003
3.3800e-
003
3.1100e-
003
3.1100e-
003
0.0000 14.0414 14.0414 4.5400e-
003
0.0000 14.1549
Unmitigated Construction On-Site
CalEEMod Version: CalEEMod.2020.4.0 Date: 2/8/2024 9:59 AMPage 24 of 40
Arcadia Well Construction and PFAS Treatment - Los Angeles-South Coast County, Annual
EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Not Applied
3.8 Well Construction - 2025
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Vendor 1.0000e-
005
5.6000e-
004
2.0000e-
004
0.0000 9.0000e-
005
0.0000 9.0000e-
005
3.0000e-
005
0.0000 3.0000e-
005
0.0000 0.2462 0.2462 1.0000e-
005
4.0000e-
005
0.2570
Worker 8.0000e-
005
6.0000e-
005
8.3000e-
004
0.0000 3.1000e-
004
0.0000 3.1000e-
004
8.0000e-
005
0.0000 8.0000e-
005
0.0000 0.2293 0.2293 1.0000e-
005
1.0000e-
005
0.2310
Total 9.0000e-
005
6.2000e-
004
1.0300e-
003
0.0000 4.0000e-
004
0.0000 4.0000e-
004
1.1000e-
004
0.0000 1.1000e-
004
0.0000 0.4755 0.4755 2.0000e-
005
5.0000e-
005
0.4881
Unmitigated Construction Off-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Off-Road 7.7100e-
003
0.0768 0.0984 1.6000e-
004
3.3800e-
003
3.3800e-
003
3.1100e-
003
3.1100e-
003
0.0000 14.0414 14.0414 4.5400e-
003
0.0000 14.1549
Total 7.7100e-
003
0.0768 0.0984 1.6000e-
004
3.3800e-
003
3.3800e-
003
3.1100e-
003
3.1100e-
003
0.0000 14.0414 14.0414 4.5400e-
003
0.0000 14.1549
Mitigated Construction On-Site
CalEEMod Version: CalEEMod.2020.4.0 Date: 2/8/2024 9:59 AMPage 25 of 40
Arcadia Well Construction and PFAS Treatment - Los Angeles-South Coast County, Annual
EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Not Applied
3.8 Well Construction - 2025
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Vendor 1.0000e-
005
5.6000e-
004
2.0000e-
004
0.0000 9.0000e-
005
0.0000 9.0000e-
005
3.0000e-
005
0.0000 3.0000e-
005
0.0000 0.2462 0.2462 1.0000e-
005
4.0000e-
005
0.2570
Worker 8.0000e-
005
6.0000e-
005
8.3000e-
004
0.0000 3.1000e-
004
0.0000 3.1000e-
004
8.0000e-
005
0.0000 8.0000e-
005
0.0000 0.2293 0.2293 1.0000e-
005
1.0000e-
005
0.2310
Total 9.0000e-
005
6.2000e-
004
1.0300e-
003
0.0000 4.0000e-
004
0.0000 4.0000e-
004
1.1000e-
004
0.0000 1.1000e-
004
0.0000 0.4755 0.4755 2.0000e-
005
5.0000e-
005
0.4881
Mitigated Construction Off-Site
3.9 Well Head Construction - 2025
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Off-Road 0.0402 0.4002 0.5131 8.3000e-
004
0.0176 0.0176 0.0162 0.0162 0.0000 73.2159 73.2159 0.0237 0.0000 73.8079
Total 0.0402 0.4002 0.5131 8.3000e-
004
0.0176 0.0176 0.0162 0.0162 0.0000 73.2159 73.2159 0.0237 0.0000 73.8079
Unmitigated Construction On-Site
CalEEMod Version: CalEEMod.2020.4.0 Date: 2/8/2024 9:59 AMPage 26 of 40
Arcadia Well Construction and PFAS Treatment - Los Angeles-South Coast County, Annual
EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Not Applied
3.9 Well Head Construction - 2025
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Vendor 8.0000e-
005
2.9300e-
003
1.0600e-
003
1.0000e-
005
7.9000e-
004
1.0000e-
005
8.0000e-
004
2.1000e-
004
1.0000e-
005
2.3000e-
004
0.0000 1.2839 1.2839 4.0000e-
005
1.9000e-
004
1.3401
Worker 4.0000e-
004
2.9000e-
004
4.3000e-
003
1.0000e-
005
2.9900e-
003
1.0000e-
005
3.0000e-
003
7.7000e-
004
1.0000e-
005
7.7000e-
004
0.0000 1.1954 1.1954 3.0000e-
005
3.0000e-
005
1.2047
Total 4.8000e-
004
3.2200e-
003
5.3600e-
003
2.0000e-
005
3.7800e-
003
2.0000e-
005
3.8000e-
003
9.8000e-
004
2.0000e-
005
1.0000e-
003
0.0000 2.4793 2.4793 7.0000e-
005
2.2000e-
004
2.5448
Unmitigated Construction Off-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Off-Road 0.0402 0.4002 0.5131 8.3000e-
004
0.0176 0.0176 0.0162 0.0162 0.0000 73.2158 73.2158 0.0237 0.0000 73.8078
Total 0.0402 0.4002 0.5131 8.3000e-
004
0.0176 0.0176 0.0162 0.0162 0.0000 73.2158 73.2158 0.0237 0.0000 73.8078
Mitigated Construction On-Site
CalEEMod Version: CalEEMod.2020.4.0 Date: 2/8/2024 9:59 AMPage 27 of 40
Arcadia Well Construction and PFAS Treatment - Los Angeles-South Coast County, Annual
EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Not Applied
3.9 Well Head Construction - 2025
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Vendor 8.0000e-
005
2.9300e-
003
1.0600e-
003
1.0000e-
005
7.9000e-
004
1.0000e-
005
8.0000e-
004
2.1000e-
004
1.0000e-
005
2.3000e-
004
0.0000 1.2839 1.2839 4.0000e-
005
1.9000e-
004
1.3401
Worker 4.0000e-
004
2.9000e-
004
4.3000e-
003
1.0000e-
005
2.9900e-
003
1.0000e-
005
3.0000e-
003
7.7000e-
004
1.0000e-
005
7.7000e-
004
0.0000 1.1954 1.1954 3.0000e-
005
3.0000e-
005
1.2047
Total 4.8000e-
004
3.2200e-
003
5.3600e-
003
2.0000e-
005
3.7800e-
003
2.0000e-
005
3.8000e-
003
9.8000e-
004
2.0000e-
005
1.0000e-
003
0.0000 2.4793 2.4793 7.0000e-
005
2.2000e-
004
2.5448
Mitigated Construction Off-Site
3.10 PFAS Treatment Plant Construction - 2025
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Off-Road 0.0220 0.2193 0.2811 4.6000e-
004
9.6500e-
003
9.6500e-
003
8.8800e-
003
8.8800e-
003
0.0000 40.1183 40.1183 0.0130 0.0000 40.4427
Total 0.0220 0.2193 0.2811 4.6000e-
004
9.6500e-
003
9.6500e-
003
8.8800e-
003
8.8800e-
003
0.0000 40.1183 40.1183 0.0130 0.0000 40.4427
Unmitigated Construction On-Site
CalEEMod Version: CalEEMod.2020.4.0 Date: 2/8/2024 9:59 AMPage 28 of 40
Arcadia Well Construction and PFAS Treatment - Los Angeles-South Coast County, Annual
EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Not Applied
3.10 PFAS Treatment Plant Construction - 2025
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Vendor 4.0000e-
005
1.6100e-
003
5.8000e-
004
1.0000e-
005
2.5000e-
004
1.0000e-
005
2.6000e-
004
7.0000e-
005
1.0000e-
005
8.0000e-
005
0.0000 0.7035 0.7035 2.0000e-
005
1.0000e-
004
0.7343
Worker 2.2000e-
004
1.6000e-
004
2.3600e-
003
1.0000e-
005
8.8000e-
004
0.0000 8.8000e-
004
2.3000e-
004
0.0000 2.4000e-
004
0.0000 0.6550 0.6550 2.0000e-
005
2.0000e-
005
0.6601
Total 2.6000e-
004
1.7700e-
003
2.9400e-
003
2.0000e-
005
1.1300e-
003
1.0000e-
005
1.1400e-
003
3.0000e-
004
1.0000e-
005
3.2000e-
004
0.0000 1.3585 1.3585 4.0000e-
005
1.2000e-
004
1.3944
Unmitigated Construction Off-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Off-Road 0.0220 0.2193 0.2811 4.6000e-
004
9.6500e-
003
9.6500e-
003
8.8800e-
003
8.8800e-
003
0.0000 40.1182 40.1182 0.0130 0.0000 40.4426
Total 0.0220 0.2193 0.2811 4.6000e-
004
9.6500e-
003
9.6500e-
003
8.8800e-
003
8.8800e-
003
0.0000 40.1182 40.1182 0.0130 0.0000 40.4426
Mitigated Construction On-Site
CalEEMod Version: CalEEMod.2020.4.0 Date: 2/8/2024 9:59 AMPage 29 of 40
Arcadia Well Construction and PFAS Treatment - Los Angeles-South Coast County, Annual
EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Not Applied
3.10 PFAS Treatment Plant Construction - 2025
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Vendor 4.0000e-
005
1.6100e-
003
5.8000e-
004
1.0000e-
005
2.5000e-
004
1.0000e-
005
2.6000e-
004
7.0000e-
005
1.0000e-
005
8.0000e-
005
0.0000 0.7035 0.7035 2.0000e-
005
1.0000e-
004
0.7343
Worker 2.2000e-
004
1.6000e-
004
2.3600e-
003
1.0000e-
005
8.8000e-
004
0.0000 8.8000e-
004
2.3000e-
004
0.0000 2.4000e-
004
0.0000 0.6550 0.6550 2.0000e-
005
2.0000e-
005
0.6601
Total 2.6000e-
004
1.7700e-
003
2.9400e-
003
2.0000e-
005
1.1300e-
003
1.0000e-
005
1.1400e-
003
3.0000e-
004
1.0000e-
005
3.2000e-
004
0.0000 1.3585 1.3585 4.0000e-
005
1.2000e-
004
1.3944
Mitigated Construction Off-Site
CalEEMod Version: CalEEMod.2020.4.0 Date: 2/8/2024 9:59 AMPage 30 of 40
Arcadia Well Construction and PFAS Treatment - Los Angeles-South Coast County, Annual
EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Not Applied
4.0 Operational Detail - Mobile
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Mitigated 0.0133 0.0156 0.1452 3.3000e-
004
0.0378 2.4000e-
004
0.0380 0.0101 2.2000e-
004
0.0103 0.0000 30.9196 30.9196 2.0200e-
003
1.2800e-
003
31.3527
Unmitigated 0.0133 0.0156 0.1452 3.3000e-
004
0.0378 2.4000e-
004
0.0380 0.0101 2.2000e-
004
0.0103 0.0000 30.9196 30.9196 2.0200e-
003
1.2800e-
003
31.3527
4.1 Mitigation Measures Mobile
4.2 Trip Summary Information
4.3 Trip Type Information
Average Daily Trip Rate Unmitigated Mitigated
Land Use Weekday Saturday Sunday Annual VMT Annual VMT
General Light Industry 24.80 9.95 25.00 100,554 100,554
Total 24.80 9.95 25.00 100,554 100,554
Miles Trip %Trip Purpose %
Land Use H-W or C-W H-S or C-C H-O or C-NW H-W or C-
W
H-S or C-C H-O or C-NW Primary Diverted Pass-by
General Light Industry 16.60 8.40 6.90 59.00 28.00 13.00 92 5 3
4.4 Fleet Mix
Land Use LDA LDT1 LDT2 MDV LHD1 LHD2 MHD HHD OBUS UBUS MCY SBUS MH
General Light Industry 0.537891 0.065289 0.189998 0.126515 0.023567 0.006518 0.011114 0.008084 0.000933 0.000591 0.025474 0.000708 0.003318
CalEEMod Version: CalEEMod.2020.4.0 Date: 2/8/2024 9:59 AMPage 31 of 40
Arcadia Well Construction and PFAS Treatment - Los Angeles-South Coast County, Annual
EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Not Applied
5.0 Energy Detail
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Electricity
Mitigated
0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Electricity
Unmitigated
0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
NaturalGas
Mitigated
4.8000e-
004
4.4000e-
003
3.7000e-
003
3.0000e-
005
3.3000e-
004
3.3000e-
004
3.3000e-
004
3.3000e-
004
0.0000 4.7921 4.7921 9.0000e-
005
9.0000e-
005
4.8206
NaturalGas
Unmitigated
4.8000e-
004
4.4000e-
003
3.7000e-
003
3.0000e-
005
3.3000e-
004
3.3000e-
004
3.3000e-
004
3.3000e-
004
0.0000 4.7921 4.7921 9.0000e-
005
9.0000e-
005
4.8206
5.1 Mitigation Measures Energy
Historical Energy Use: N
CalEEMod Version: CalEEMod.2020.4.0 Date: 2/8/2024 9:59 AMPage 32 of 40
Arcadia Well Construction and PFAS Treatment - Los Angeles-South Coast County, Annual
EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Not Applied
5.2 Energy by Land Use - NaturalGas
NaturalGa
s Use
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Land Use kBTU/yr tons/yr MT/yr
General Light
Industry
89800 4.8000e-
004
4.4000e-
003
3.7000e-
003
3.0000e-
005
3.3000e-
004
3.3000e-
004
3.3000e-
004
3.3000e-
004
0.0000 4.7921 4.7921 9.0000e-
005
9.0000e-
005
4.8206
Total 4.8000e-
004
4.4000e-
003
3.7000e-
003
3.0000e-
005
3.3000e-
004
3.3000e-
004
3.3000e-
004
3.3000e-
004
0.0000 4.7921 4.7921 9.0000e-
005
9.0000e-
005
4.8206
Unmitigated
NaturalGa
s Use
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Land Use kBTU/yr tons/yr MT/yr
General Light
Industry
89800 4.8000e-
004
4.4000e-
003
3.7000e-
003
3.0000e-
005
3.3000e-
004
3.3000e-
004
3.3000e-
004
3.3000e-
004
0.0000 4.7921 4.7921 9.0000e-
005
9.0000e-
005
4.8206
Total 4.8000e-
004
4.4000e-
003
3.7000e-
003
3.0000e-
005
3.3000e-
004
3.3000e-
004
3.3000e-
004
3.3000e-
004
0.0000 4.7921 4.7921 9.0000e-
005
9.0000e-
005
4.8206
Mitigated
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6.1 Mitigation Measures Area
6.0 Area Detail
5.3 Energy by Land Use - Electricity
Electricity
Use
Total CO2 CH4 N2O CO2e
Land Use kWh/yr MT/yr
General Light
Industry
54300 0.0000 0.0000 0.0000 0.0000
Total 0.0000 0.0000 0.0000 0.0000
Unmitigated
Electricity
Use
Total CO2 CH4 N2O CO2e
Land Use kWh/yr MT/yr
General Light
Industry
54300 0.0000 0.0000 0.0000 0.0000
Total 0.0000 0.0000 0.0000 0.0000
Mitigated
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ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Mitigated 0.0204 0.0000 6.0000e-
005
0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 1.2000e-
004
1.2000e-
004
0.0000 0.0000 1.3000e-
004
Unmitigated 0.0204 0.0000 6.0000e-
005
0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 1.2000e-
004
1.2000e-
004
0.0000 0.0000 1.3000e-
004
6.2 Area by SubCategory
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
SubCategory tons/yr MT/yr
Architectural
Coating
2.3200e-
003
0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Consumer
Products
0.0181 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Landscaping 1.0000e-
005
0.0000 6.0000e-
005
0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 1.2000e-
004
1.2000e-
004
0.0000 0.0000 1.3000e-
004
Total 0.0204 0.0000 6.0000e-
005
0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 1.2000e-
004
1.2000e-
004
0.0000 0.0000 1.3000e-
004
Unmitigated
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7.1 Mitigation Measures Water
7.0 Water Detail
6.2 Area by SubCategory
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
SubCategory tons/yr MT/yr
Architectural
Coating
2.3200e-
003
0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Consumer
Products
0.0181 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Landscaping 1.0000e-
005
0.0000 6.0000e-
005
0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 1.2000e-
004
1.2000e-
004
0.0000 0.0000 1.3000e-
004
Total 0.0204 0.0000 6.0000e-
005
0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 1.2000e-
004
1.2000e-
004
0.0000 0.0000 1.3000e-
004
Mitigated
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Total CO2 CH4 N2O CO2e
Category MT/yr
Mitigated 0.3668 0.0377 8.9000e-
004
1.5738
Unmitigated 0.3668 0.0377 8.9000e-
004
1.5738
7.2 Water by Land Use
Indoor/Out
door Use
Total CO2 CH4 N2O CO2e
Land Use Mgal MT/yr
General Light
Industry
1.15625 /
0
0.3668 0.0377 8.9000e-
004
1.5738
Total 0.3668 0.0377 8.9000e-
004
1.5738
Unmitigated
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7.2 Water by Land Use
Indoor/Out
door Use
Total CO2 CH4 N2O CO2e
Land Use Mgal MT/yr
General Light
Industry
1.15625 /
0
0.3668 0.0377 8.9000e-
004
1.5738
Total 0.3668 0.0377 8.9000e-
004
1.5738
Mitigated
8.1 Mitigation Measures Waste
8.0 Waste Detail
Total CO2 CH4 N2O CO2e
MT/yr
Mitigated 1.2585 0.0744 0.0000 3.1180
Unmitigated 1.2585 0.0744 0.0000 3.1180
Category/Year
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8.2 Waste by Land Use
Waste
Disposed
Total CO2 CH4 N2O CO2e
Land Use tons MT/yr
General Light
Industry
6.2 1.2585 0.0744 0.0000 3.1180
Total 1.2585 0.0744 0.0000 3.1180
Unmitigated
Waste
Disposed
Total CO2 CH4 N2O CO2e
Land Use tons MT/yr
General Light
Industry
6.2 1.2585 0.0744 0.0000 3.1180
Total 1.2585 0.0744 0.0000 3.1180
Mitigated
9.0 Operational Offroad
Equipment Type Number Hours/Day Days/Year Horse Power Load Factor Fuel Type
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11.0 Vegetation
10.0 Stationary Equipment
Fire Pumps and Emergency Generators
Equipment Type Number Hours/Day Hours/Year Horse Power Load Factor Fuel Type
Boilers
Equipment Type Number Heat Input/Day Heat Input/Year Boiler Rating Fuel Type
User Defined Equipment
Equipment Type Number
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Mitigated Negative Declaration
Date: February 10, 2025
Subject: CEQA Mitigated Negative Declaration
City of Arcadia Goldring Well and PFAS Treatment Plant
Background
The City of Arcadia (City) serves water to over 57,000 residents, primarily with water
pumped from the Main San Gabriel Basin (Main Basin), the West Unit of the Raymond
Basin (Pasadena Subarea), and the East Unit of the Raymond Basin (Santa Anita
Subarea). The City’s water supply system consists of eleven (11) active wells with a
combined capacity of over 12,000 gallons per minute (gpm), nine (9) booster pump
stations, fifteen (15) active reservoirs, two (2) active water forebays, and over 168 miles
of distribution pipelines distributing flows into nine (9) pressure zones to over 13,400
service connections.
To enhance the water supply for the City and the City of Sierra Madre (“Sierra Madre”),
the City and Sierra Madre are partnering to design, permit, construct, and operate a new
well in the Main Basin.
Project Description
The proposed project consists of the construction and operation of a groundwater
production well, the construction and operation of a Granular Activated Carbon (GAC) or
Ion Exchange (IX) treatment system with pre-filters consisting of 2 pairs of vessels for
the removal of Per and Polyfluoroalkyl substances (PFAS) from the extracted
groundwater, the construction and operation of a new 30,000 gallons backwash tank
with a new 4-inch diameter sewer pipeline, and the construction and operation of a new
30-inch diameter Reinforced Concrete Pipe (RCP) storm drain pipeline approximately
1,400 feet in length connecting from the cul-de-sac at Kardashian Avenue and Goldring
Road, going westerly on Randolph Street and connecting to the existing 57-inch RCP
on Peck Road (Project). The City of Arcadia’s (City) Goldring Well will be located
approximately 200 feet south of the intersection of Kardashian Avenue and Goldring
Road, within the existing City’s Public Works Yard.
The proposed Project is located in an open, paved and graded property with a total size
of approximately 5 acres owned by the City. The project construction site for the well,
pipeline, and PFAS treatment plant is constrained to a designated area covering roughly
5,000 square feet, equivalent to 0.15 acres in total.
Project Location:
Within the City of Arcadia, Intersection of Kardashian Avenue and Goldring Road
Proposed Findings:
The proposed project could have a significant effect on the environment, there will not be
a significant effect in this case because revisions in the project have been made by or
agreed to by the project proponent. The facts supporting these findings are presented in
the attached Initial Environmental Study (IES) prepared for this project.
Responses to Public Comments
Initial Environmental Study
City of Arcadia Goldring Well and PFAS Treatment Plant Project
An Initial Environmental Study for the City of Arcadia (City) Goldring Well and
PFAS Treatment Plant Project was made available for public review and comment for
a period of 30 days; commencing on February 10, 2025 and ending on March 11, 2025.
During the review period, the City, the lead agency under the California Environmental
Quality Act, received one comment letter from public agencies on the Initial
Environmental Study. The City has evaluated the comments received and prepared
written responses.
The following public agency submitted comments on the Initial Environmental Study.
A copy of the comment letter along with a written response to each comment is
included.
Comment Letters
1. State Water Resources Control Board, Division of Drinking Water, March
11, 2025.
EXHIBIT "B"
City of Arcadia Goldring Well and PFAS Treatment Plant Project
Responses to Comments by State Water Resources Control Board,
Division of Drinking Water (DDW), March 11, 2025
Based on the comments provided by DDW, the City’s responses are as follows:
1. In the event granular activated carbon (GAC) is selected as the treatment
technology, the spent carbon will be taken by a licensed contractor to a
reactivation facility or a disposal facility permitted to handle the spent carbon. A
backwash tank may be necessary to contain the backwash water generated
during the carbon change out process, before the water can be slowly
discharged to the sanitary sewer line. In the event single-pass ion exchange
(IX) is selected as the treatment technology, the spent resin will be taken to a
licensed disposal facility for incineration. A regenerable IX treatment system will
not be used, therefore, brine will not be generated at the site. There is no
contaminant waste stream associated with a single-pass IX system.
2. A new Flow Control Valve will be installed at the 8-inch diameter emergency
interconnection located at 234 W. Sierra Madre Blvd., in the City of Arcadia, and
will be monitored and controlled by the City’s SCADA System.
The new Well will deliver water directly to the City’s distribution system, where
storage reservoirs regulate pressures and deliveries to meet water demands.
When water demands are increased either from the City’s distribution system or
a call for water from the City of Sierra Madre, reservoir levels will be decreased
and the new Well will be called on at a given set point in order to refill the
reservoirs. Since fluctuating system demands are addressed by the reservoirs,
a variable frequency drive (VFD) to vary well flow rates is not necessary.
Delivery of flows from the Well directly into the distribution system will be
performed gradually using an automated pump control valve to allow slow
ramping up and down of flows to avoid sudden surges in system pressures.
State Water Resources Control Board
March 11, 2024
Tiffany Lee
City of Arcadia
11800 Goldring Road
Arcadia, CA 91066
CITY OF ARCADIA (ARCADIA), INITIAL STUDY/MITIGATED NEGATIVE
DECLARATION (IS/MND) FOR THE CITY OF ARCADIA GOLDRING WELL AND
PFAS TREATMENT PLANT (PROJECT); STATE CLEARINGHOUSE # 2025020361
Dear Tiffany:
Thank you for the opportunity to review the IS/MND for the proposed Project. The State
Water Resources Control Board, Division of Drinking Water (State Water Board, DDW)
is responsible for issuing water supply permits pursuant to the Safe Drinking Water Act.
This Project is within the jurisdiction of the State Water Board, DDW Angeles and
Hollywood Districts. DDW Angeles District and DDW Hollywood District issues domestic
water supply permit amendments to public water systems pursuant to Waterworks
Standards (Title 22 California Code of Regulations [Cal Code Regs.] chapter 16 et.
seq.). A public water system requires a water supply permit amendment when changes
are made to a domestic water supply source, storage, or treatment and for the operation
of new water system components- as specified in the Cal. Code Regs. § 64556. Arcadia
will need to apply for a water supply permit amendment from the Angeles District for the
addition of a new drinking water source and any associated treatment(s). The City of
Sierra Madre (Sierra Madre) currently has an emergency interconnection with Arcadia.
Once the Project is constructed by Arcadia and permitted by the Angeles District, Sierra
Madre will apply for their own permit amendment from the Hollywood District to change
the status of their interconnection from “emergency” to “active”.
The State Water Board, DDW, as a responsible agency under the California
Environmental Quality Act (CEQA), has the following comments on Arcadia’s IS/MND:
·Under 8. Description of the Project, please discuss:
o The maintenance and operation of the well and granular activated carbon
or ion exchange treatment. Per and polyfluoroalkyl substances (PFAS) is
a hazardous substance; how will the PFAS waste residuals from
treatment be disposed of? If ion exchange is used, there will be brine
waste in addition to the PFAS waste which may contain both brine and
PFAS. How would the brine be treated and where would it go?
Tiffany Lee -2 -March 11, 2025
o How the water will be distributed to Sierra Madre.
When the CEQA review process is completed, please forward the following items with
the permit application to the State Water Board, DDW Angeles District Office at
DWPDIST22@waterboards.ca.gov and to the State Water Board, DDW Hollywood
District Office at DWPDIST07@waterboards.ca.gov:
·The IS/MND and the Mitigation Monitoring and Reporting Plan (MMRP);
·All comment letters received and the lead agency responses as appropriate;
·The Resolution or Board Minutes adopting the IS/MND and MMRP and
approving the Project; and
·The date stamped Notice of Determination filed at the Los Angeles County
Clerk’s Office and the State Clearinghouse.
Please contact Lori Schmitz of the State Water Board at (916) 449-5285 or
Lori.Schmitz@waterboards.ca.gov, for questions regarding this comment letter.
Sincerely,
Lori Schmitz
Environmental Scientist
Division of Financial Assistance
Special Project Review Unit
1001 I Street, 16th floor
Sacramento, CA 95814
Cc:
State Clearinghouse
Dmitriy Ginzburg
District Engineer
Hollywood District
James Ko
Associate Sanitary Engineer
Hollywood District
Bill Liang
District Engineer
Angeles District
Ofelia Oracion
Tiffany Lee -3 -March 11, 2025
Sanitary Engineer
Angeles District
Jose Reynoso
City Manager
Sierra Madre
Steven McGee
Water Superintendent
Sierra Madre
California Environmental Quality Act
MITIGATION MONITORING AND REPORTING Program
City of Arcadia
Goldring Well and PFAS
Treatment Plant
Lead
Agency:
City of Arcadia
240 W. Huntington Drive
Arcadia, CA 91007
(626) 254-2721
Contact: Tiffany Lee,
Senior Civil Engineer
Prepared by: Stetson Engineers Inc.
861 S. Village Oaks, Dr., Suite 100
Covina, CA 91724
(626) 967-6202
EXHIBIT "C"
Goldring Well and PFAS Treatment Plant
Mitigation Monitoring and Reporting Program Page 2 March 2025
I. Introduction
To ensure that the mitigation measures identified in a project’s Initial Study are implemented, the
California Environmental Quality Act (CEQA) requires the Lead Agency for a project to adopt a
program for monitoring or reporting on the measures it has imposed to mitigate or avoid significant
environmental effects. As specifically set forth in Section 15097(c) of the CEQA Guidelines, the public
agency may choose whether its program will monitor mitigation, report on mitigation, or both.
“Monitoring” is generally an ongoing or periodic process of project oversight, while “reporting”
generally consists of a written compliance review that is presented to the decision-making body or
authorized staff person.
An Initial Study/Mitigated Negative Declaration (IS/MND) has been prepared to address the City of
Arcadia Goldring Well and PFAS Treatment Plant’s (Project) potential environmental impacts. The
evaluation of the Project includes mitigation measures to avoid or substantially lessen potentially
significant impacts to less-than-significant levels. Specifically, the IS/MND includes mitigation
measures related to the following environmental issue area: Air Quality, Hazards and Hazardous
Materials, Noise and Tribal Cultural Resources. This Mitigation Monitoring and Reporting Program
(MMRP) is designed to monitor implementation of these Project-specific mitigation measures.
II. Purpose
The overall intent of this MMRP is to:
x Verify compliance with mitigation measures identified in the IS/MND prepared for the
Proposed Project;
x Provide a framework to document implementation of the identified mitigation measures;
x Provide a record of mitigation requirements;
x Identify monitoring and enforcement agencies;
x Establish and clarify administrative procedures for the clearance of mitigation measures; and
x Establish the frequency and duration of monitoring.
III. Organization
As shown in Table 1, each mitigation measure for the Proposed Project is listed by environmental
issue area, with accompanying information identifying the:
x Enforcement Agency – the agency with the power to enforce the Project’s mitigation
measures.
x Monitoring Agency – the agency to which reports involving compliance and implementation
of the mitigation measures are made.
x Monitoring Phase – the phase of the Project (e.g., pre-construction, construction, architectural
coatings, occupation, etc.) during which the mitigation measure shall be monitored.
x Monitoring Frequency – the frequency at which the mitigation measure shall be monitored
during the phase identified in the prior column.
x Action Indicating Compliance – the action or actions by which the enforcement/monitoring
agency indicates that compliance with the identified mitigation measure has been determined.
Mitigation Monitoring and Reporting Program Page 3 March 2025
Table 1 – Mitigation Monitoring and Reporting Program
No. Mitigation Measures Enforcement
Agency
Monitoring
Agency
Monitoring
Phase
Monitoring
Frequency
Action Indicating
Compliance
Air Quality
AIR-1 Daily construction emissions will be below significant thresholds. Mitigation measures such as
misting water spray would be implemented to reduce dust and particulate matter during
construction. Impacts to sensitive receptors from construction related air emissions will be less than
significant.
City of Arcadia
Public Works
Department
City of Arcadia
Public Works
Department
Construction During all specified
ground disturbing
activities
Submittal of
compliance
documentation by
field inspector
Hazards and Hazardous Materials
HAZ-1 Experienced professional contractors at the proposed Project site will perform physical site
inspections, which may include visual inspections, collection of soil samples, and soil testing, to
verify the safety of the proposed Project site before construction will be allowed to commence. If
during construction of the Project, soil contamination is suspected, construction in the area will
stop, and appropriate health and safety procedures will be implemented consistent with California
Occupational Safety and Health Administration (CalOSHA) health and safety requirements. If the
contractor believes that hazardous materials, as defined in Section 25117 of the Health and Safety
Code, is present in the construction area, the contractor will take the steps necessary to contain the
contaminant, evacuate the area in its current condition, and notify Department of Toxic Substances
Control (DTSC) in writing. DTSC will promptly investigate the conditions, and if it is determined
that contaminated soils exist, the extent of the contamination will be determined by the means of a
Phase I Environmental Assessment (EA). If the Phase I EA concludes that the site is
contaminated, a Phase II EA may be conducted, which will include the development of a sampling
plan to determine the extent of the contamination and to help identify the remedial measures
suitable for safe completion of the Project. If the extent of the contamination is small, excavation
and transport of the soil to an appropriate Class I, Class II, or Class III disposal site in accordance
to the provision of existing law, may be performed. If the extend of the contamination is large, all
proper steps and procedures will be taken in accordance to the remedial measures identified in the
Phase II EA. The Environmental Protection Agency and DTSC will provide regulatory oversight
of any investigation and remediation of the Project site. Any construction waste generated by the
proposed Project will be properly disposed of at an appropriate facility.
City of Arcadia
Public Works
Department
City of Arcadia
Public Works
Department
Construction During all specified
ground disturbing
activities
Submittal of
compliance
documentation by
field inspector
Mitigation Monitoring and Reporting Program Page 4 March 2025
Noise
NOI-1 An increase in groundborne vibration or noise levels may occur during the construction of the
proposed Project. However, the increased levels will be temporary and typical of construction
activities. Construction will be limited to the allowable hours per City ordinance. Operation of the
proposed Project will not result in an increase in groundborne vibration or noise levels. There will
be no significant impact.
The San Gabriel Valley Airport is about 1.8 miles southwest of the proposed Project. Ambient noise
levels may increase temporarily in the Project vicinity. Appropriate sound reduction measures will be
provided to ensure the noise level from the extraction wells does not exceed allowable levels. Because
the noise levels are temporary and consistent with normal operation activity, there is no significant
impact.
City of Arcadia
Public Works
Department
City of Arcadia
Public Works
Department
Construction During all specified
ground disturbing
activities
Submittal of
compliance
documentation by
field inspector
Tribal Cultural Resources
TCR-1
The project applicant/lead agency shall retain a Native American Monitor from or approved by the
Gabrieleño Band of Mission Indians – Kizh Nation. The monitor shall be retained prior to the
commencement of any “ground-disturbing activity” for the subject project at all project locations
(i.e., both on-site and any off-site locations that are included in the project description/definition
and/or required in connection with the project, such as public improvement work). “Ground-
disturbing activity” shall include, but is not limited to, demolition, pavement removal, potholing,
auguring, grubbing, tree removal, boring, grading, excavation, drilling, and trenching. Monitoring of
well drilling shall be limited to 50 feet below surface level if the monitor determines the soils are still
sensitive to potential Tribal Cultural Resources.
A copy of the executed monitoring agreement shall be submitted to the lead agency prior to the
earlier of the commencement of any ground-disturbing activity, or the issuance of any permit
necessary to commence a ground-disturbing activity.
The monitor will complete daily monitoring logs that will provide descriptions of the relevant
ground-disturbing activities, the type of construction activities performed, locations of ground-
disturbing activities, soil types, cultural-related materials, and any other facts, conditions, materials,
or discoveries of significance to the Tribe. Monitor logs will identify and describe any discovered
TCRs, including but not limited to, Native American cultural and historical artifacts, remains, places
of significance, etc., (collectively, tribal cultural resources, or “TCR”), as well as any discovered
Native American (ancestral) human remains and burial goods. Copies of monitor logs will be
provided to the project applicant/lead agency upon written request to the Tribe.
On-site tribal monitoring shall conclude upon the latter of the following (1) written confirmation
to the Kizh from a designated point of contact for the project applicant/lead agency that all ground-
disturbing activities and phases that may involve ground-disturbing activities on the project site or
in connection with the project are complete; or (2) a determination and written notification by the
Kizh to the project applicant/lead agency that no future, planned construction activity and/or
development/construction phase at the project site possesses the potential to impact Kizh TCRs.
City of Arcadia
Public Works
Department
City of Arcadia
Public Works
Department
Construction During all specified
ground disturbing
activities
Submittal of
compliance
documentation by
tribal monitor
Mitigation Monitoring and Reporting Program Page 5 March 2025
TCR-2 Upon discovery of any TCRs, all construction activities in the immediate vicinity of the discovery
shall cease (i.e., not less than the surrounding 50 feet) and shall not resume for up to 48 hours until
the discovered TCR has been fully assessed by the Kizh monitor and/or Kizh archaeologist. The
Kizh will recover and retain all discovered TCRs in the form and/or manner the Tribe deems
appropriate, in the Tribe’s sole discretion, and for any purpose the Tribe deems appropriate,
including for educational, cultural and/or historic purposes.
City of Arcadia
Public Works
Department
City of Arcadia
Public Works
Department
Construction During all specified
ground disturbing
activities
Submittal of
compliance
documentation by
tribal monitor
TCR-3 Native American human remains are defined in PRC 5097.98 (d)(1) as an inhumation or cremation,
and in any state of decomposition or skeletal completeness. Funerary objects, called associated
grave goods in Public Resources Code Section 5097.98, are also to be treated according to this
statute.
If Native American human remains and/or grave goods are discovered or recognized on the project
site, then Public Resource Code 5097.9 as well as Health and Safety Code Section 7050.5 shall be
followed.
Human remains and grave/burial goods shall be treated alike per California Public Resources Code
section 5097.98(d)(1) and (2).
Preservation in place (i.e., avoidance) is the preferred manner of treatment for discovered human
remains and/or burial goods.
Any discovery of human remains/burial goods shall be kept confidential to prevent further
disturbance.
A resource determined by the lead agency, in its discretion and supported by substantial
evidence, to be significant pursuant to criteria set forth in subdivision (c) of Public
Resources Code Section 5024.1. In applying the criteria set forth in subdivision (c) of Public
Resource Code Section 5024.1, the lead agency shall consider the significance of the
resource to a California Native American tribe.
City of Arcadia
Public Works
Department
City of Arcadia
Public Works
Department
Construction During all specified
ground disturbing
activities
Submittal of
compliance
documentation by
tribal monitor