Initial Study and Mitigated
Negative Declaration
City of Baldwin Park
Roadside Park Project
State Clearinghouse No. 2025070965
1561 E. Orangethorpe Avenue, Suite 240
Fullerton, California 92831
TEL (714) 526-7500 | FAX (714) 526-7004
www.cwecorp.com
Initial Study and
Mitigated Negative Declaration
Roadside Park Project
State Clearinghouse No. 2025070965
Prepared for:
City of Baldwin Park
14403 E. Pacific Avenue
Baldwin Park, California 91706
TEL (626) 813 5269
Prepared by:
1561 E. Orangethorpe Avenue, Suite 240
Fullerton, California, 92831
TEL (714) 526-7500 | FAX (714) 526-7004 | www.cwecorp.com
August 2025
City of Baldwin Park California Environmental Quality Act Initial Study/Mitigated Negative Declaration
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Table of Contents
T
ABLE OF CONTENTS .................................................................................................................. i LIST OF FIGURES .......................................................................................................................ii LIST OF TABLES ..........................................................................................................................ii ACRONYMS ................................................................................................................................iii
1. INTRODUCTION . .............................................................................................................. 1
1.1 PURPOSE AND DOCUMENT ORGANIZATION.................................................................................... 1
1.2 SUMMARY OF FINDINGS .......................................................................................................... 1
2. PROJECT DESCRIPTION . ................................................................................................. 2
2.1 PROJECT LOCATION ............................................................................................................... 4
3. INITIAL STUDY/ENVIRONMENTAL CHECKLIST . ............................................................. 5
3.1 AESTHETICS ........................................................................................................................ 8
3.2 AGRICULTURE AND FORESTRY RESOURCES ................................................................................. 10
3.3 AIR QUALITY ..................................................................................................................... 12
3.4 BIOLOGICAL RESOURCES ....................................................................................................... 15
3.5 CULTURAL RESOURCES ......................................................................................................... 18
3.6 ENERGY ........................................................................................................................... 21
3.7 GEOLOGY AND SOILS ........................................................................................................... 22
3.8 GREENHOUSE GAS EMISSIONS ................................................................................................ 25
3.9 HAZARDS AND HAZARDOUS MATERIALS ..................................................................................... 26
3.10 HYDROLOGY AND WATER QUALITY ....................................................................................... 28
3.11 LAND USE AND PLANNING .................................................................................................. 30
3.12 MINERAL RESOURCES ....................................................................................................... 31
3.13 NOISE .......................................................................................................................... 32
3.14 POPULATION AND HOUSING ................................................................................................ 40
3.15 PUBLIC SERVICES ............................................................................................................ 41
3.16 RECREATION .................................................................................................................. 43
3.17 TRANSPORTATION/TRAFFIC ................................................................................................ 44
3.18 TRIBAL CULTURAL RESOURCES ............................................................................................ 46
3.19 UTILITIES AND SERVICE SYSTEMS ......................................................................................... 50
3.20 WILDFIRE ..................................................................................................................... 52
3.21 MANDATORY FINDINGS OF SIGNIFICANCE ............................................................................... 53
4. REFERENCES . ................................................................................................................. 55 City of Baldwin Park California Environmental Quality Act Initial Study/Mitigated Negative Declaration
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List of Figures
Figure 2-1 Project Location ................................ ................................ ................................ ............ 4 Figure 3-1 Noise Measurement Locations ................................ ................................ ....................... 34
List of Tables
Table 3-1 Daily Emissions for Construction of the Project ................................ ................................ . 13 Table 3-2 Greenhouse Gas Emissions for Project ................................ ................................ ............ 25 Table 3-3 Noise Assessment Results ................................ ................................ .............................. 33 Table 3-4 City of Baldwin Park Land Use Guidelines for Exterior Noise ................................ ................ 35 Table 3-5 Construction Equipment Noise Emission Levels ................................ ................................ . 36 Table 3-6 Construction Equipment Vibration Reference Levels ................................ .......................... 39
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Acronyms
AQMP Air Quality Management Plan
BMP Best Management Practice
CCR California Code of Regulations
CDFW California Department of Fish and Wildlife
Caltrans California Department of Transportation
CEQA California Environmental Quality Act
CO Carbon Monoxide
CRHR California Register of Historic Resources
dBA Maximum A-Weighted Decibels
EIR Environmental Impact Report
EWMP Enhanced Watershed Management Program
FEMA Federal Emergency Management Agency
FHWA Federal Highway Administration
FMMP Farmland Mapping and Monitoring Program
GHG Greenhouse Gas
IPaC Information for Planning and Conservation
IS/MND Initial Study/Mitigated Negative Declaration
LACFCD Los Angeles County Flood Control District
LARWQCB Los Angeles Regional Water Quality Control Board MLD Most Likely Descendant
MRZ Mineral Resource Zone
MT Metric Tons
NAAQS National Ambient Air Quality Standards
NAHC National American Heritage Commission
NOx Nitrogen Oxides
PM Particulate Matter
PPV Peak Particle Velocity
PRIMP Paleontological Resources Impact Mitigation Program SCAB South Coast Air Basin
SCAQMD South Coast Air Quality Management District
SCCIC South Central Coastal Information Center
SLF Sacred Lands File
SMARA Surface Mining and Reclamation Act of 1975
SOx Sulfur Oxides
SVP Society of Vertebrate Paleontology
USACE United States Army Corps of Engineers
USDA United States Department of Agriculture
USFWS United States Fish and Wildlife Services
USGR Upper San Gabriel River
WEAP Worker Environmental Awareness Program
WMG Watershed Management Group
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1. Introduction
This California Environmental Quality Act (CEQA) Initial Study/Mitigated Negative Declaration (IS/MND) has been prepared on behalf of the City of Baldwin Park (City) to identify potential site-specific environmental constraints associated with the Roadside Park Project (Project) located at 1081 Leorita Street in the City of Baldwin Park. This document has been prepared in accordance with CEQA (Public Resources Code §21000 et seq.), and the State CEQA Guidelines (Title 14, California Code of Regulations (CCR) §15000 et seq).
This IS/MND is intended for use by the City and members of the general public as a preliminary analysis to determine if there is substantial evidence that the Project may have significant effects on the environment. If site-specific environmental constraints are found to potentially have a significant effect on the environment, with mitigation, a site-specific Environmental Impact Report (EIR) should be prepared; otherwise, the lead agency may adopt a negative declaration or MND. This IS/MND was compiled for the City with the assistance of CWE. The City is serving as the Lead Agency for the proposed Project pursuant to CEQA §21067 and CEQA Guidelines Article 4 and §15367. “Lead Agency” refers to the public agency that has the principal responsibility for carrying out or approving a Project.
1.1 Purpose and Document Organization
The purpose of this document is to evaluate the potential environmental effects of the proposed Project.
Mitigation measures, if required, have been incorporated into the Project to eliminate potential significant impacts or reduce them to a less-than-significant level.
This IS/MND is organized as follows:
Section 1 – Introduction
Section 2 – Project Description
Section 3 – Initial Study/Environmental Checklist
Section 4 – References
1.2 Summary of Findings
The CEQA Appendix G Environmental (Initial Study) Checklist is included in Section 3. The Initial Study Checklist identifies potential environmental impacts, by sections, and provides a brief discussion of each impact resulting from implementation of the proposed Project. Each response confirmed as applicable in the environmental checklist is discussed and supported with sufficient data and analysis as necessary. As appropriate, each section has discussion that describes and identifies specific impacts anticipated with project implementation.
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2. Project Description
The Project is being implemented by the City to address the City’s environmental efforts and expand recreational facilities. This Project aims to develop the existing surface basin area that takes drainage from the nearby roadways including Caltrans Highway into a subsurface stormwater capture and infiltration system with park features on the surface. The City is committed to maximizing community benefits through the Project. Amenities are expected to include a nature-based playground, shade structure, outdoor fitness equipment, picnic areas, native plants and pollinator garden, restroom facility, irrigation system and walking path with solar lighting, recycled benches and tables, and open green space. The park will also include approximately 17 new large shade trees, native plants and shrubs, permeable walkways, and stormwater capture bioswales and an underground water infiltration system to recharge this region’s groundwater table. The conceptual layout of the Project is included as Figure 2-1.
The City is a participant in the Upper San Gabriel River (USGR) Watershed Management Group (WMG), which is composed of the County of Los Angeles (County), Los Angeles County Flood Control District (LACFCD), and the Cities of Baldwin Park, Covina, Glendora, Industry, La Puente, and West Covina. The USGR WMG developed the USGR Enhanced Watershed Management Program (EWMP) Plan, which identified projects to improve water quality. The Project may support the EWMP Plan’s stormwater planning goals including reusing stormwater, enhancing flood control, promoting water conservation efforts, improving water quality, and increasing water supplies.
The Project goals are summarized as follows:
Increase recreational park space
Promoting groundwater recharge
Enhance water quality
Maximize community benefits
Minimize disruption to residents and local businesses Incorporate community-based input
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Figure 2-1 Project Concept
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2.1 Project Location
The proposed Project will be located in the City of Baldwin Park, within Los Angeles County, California.
The City of Baldwin Park is situated in the central San Gabriel Valley region of Los Angeles County. The project site is at Roadside Park, located at 1081 Leorita Street, as depicted in Figure 2-2. Roadside Park will take the place of two empty lots at the intersection of Leorita Street and Dalewood Street, adjacent to the Kaiser Permanente Medical Center, next to the San Bernadino Freeway (Highway 10). The park’s location is also 0.25 miles from the route of the Baldwin Park Greenway, a 5-mile protected bike and pedestrian path that is currently under construction.
Figure 2-2 Project Location
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3. Initial Study/Environmental Checklist
Environmental Checklist Form
1. Project Title: Roadside Park and Stormwater Capture Project
2. Lead Agency Name
and Address:
City of Baldwin Park
14403 E. Pacific Avenue, Baldwin Park, California 91706
3. Contact Person
and Phone
Number:
Manuel Carrillo Jr.
Director of Recreation & Community Services
(626) 813-5269
4. Project Location: Roadside Park, City of Baldwin Park, California
5. Project Sponsor’s
Name and
Address:
City of Baldwin Park
14403 E. Pacific Avenue, Baldwin Park, California 91706
6. General Plan
Designation:
Open Space
7. Zoning: Open Space
8. Description of
Project:
The City of Baldwin Park will develop a new 0.80-acre nature-based park at a blighted vacant lot adjacent to Kaiser Permanente Medical Center.
The new park, referred to as Roadside Park, is expected to include passive and active recreation features, including a nature-based playground, shade structure, outdoor fitness equipment, picnic areas, native plants and pollinator garden, restroom facility, irrigation system and walking path with solar lighting, recycled benches and tables, and open green space. The park will also include approximately 17 new large shade trees, native plants and shrubs, permeable walkways, and stormwater capture bioswales and an underground water infiltration system to recharge this region’s groundwater table.
9. Surrounding land
uses and setting:
General Commercial
10. Other public
agencies whose
approval is
required:
LACFCD
11. Have California
Native American
tribes traditionally
and culturally
affiliated with the
project area
requested
consultation
pursuant to Public
Resources Code
section 21080.3.1?
If so, has
consultation
begun?a
The City of Baldwin Park sent out notification letters to the Soboba Band of Luiseno Indians, Gabrieleno Band of Mission Indians-Kizh Nation, and Gabrieleno-Tongva Tribe, pursuant to Assembly Bill 52 and Public Resources Code Section 21080.3.1.
a. Conducting consultation early in the CEQA process allows tribal governments, lead agencies, and project proponents to discuss the level of environmental review, identify and address potential adverse impacts to tribal cultural resources, and reduce the City of Baldwin Park California Environmental Quality Act Initial Study/Mitigated Negative Declaration
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potential for delay and conflict in the environmental review process. (See Public Resources Code section 21083.3.2.) Information may also be available from the California Native American Heritage Commission’s Sacred Lands File per Public Resources Code section 5097.96 and the California Historical Resources Information System administered by the California Office of Historic Preservation. Please also note that Public Resources Code section 21082.3(c) contains provisions specific to confidentiality.
The environmental factors checked below would 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
Resources Air Quality
Biological Resources Cultural Resources Energy
Geology / Soils Greenhouse Gas Emissions
Hazards & 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
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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
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3.1 Aesthetics
Would the project:
Environmental Issue
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
Impact
a) Have a substantial adverse effect on a scenic
vista? X
b) Substantially damage scenic resources, including,
but not limited to, trees, rock outcroppings, and
historic buildings within a state scenic highway?
X
c) In non-urbanized areas, substantially degrade
the existing visual character or quality 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?
X
d) Create a new source of substantial light or glare
which would adversely affect day or nighttime views
in the area?
X
Discussion:
a) The City of Baldwin Park does not designate any scenic vistas according to the City’s General Plan.
The project site is designated as open space but is currently vacant and within an urbanized commercial area. Construction of the Project will involve temporary ground disturbance activities.
During construction, the presence of construction equipment and materials may be visible from public vantage points; however, these activities will not significantly impact any scenic views or vistas.
Once the construction is complete, the project site will have enhanced above-ground amenities and will not obstruct any existing views or vistas. Therefore, the Project is not anticipated to have a substantial adverse impact on scenic vistas, and no further impacts are expected.
b) The Project is not located within or adjacent to any designated scenic resources. According to the California Department of Transportation Scenic Highways Program Database, there are no designated state scenic highways located near the Project. Additionally, the City’s General Plan does not specify any scenic highway corridors. The proposed site does not contain any rock outcroppings or formations. Existing trees on the site may be removed, however, 17 new trees are proposed to be included in the park. As a result, there will be no significant impacts to trees, rock outcroppings, or state scenic highways. Therefore, no significant impacts to scenic resources are anticipated.
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c) The Project is located within an urbanized area. Construction activities associated with the Project will require the use of construction equipment and the storage of materials on-site, which will introduce temporary contrasting features into the visual landscape. These features may include demolition debris, excavated areas, stockpiled soils, and other materials generated and stored during construction. However, these visual disturbances will be temporary, and once construction is completed, the proposed infrastructure will enhance the aesthetic quality of the park facilities. As a result, impacts to the visual character of the site will be temporary and less than significant.
d) The project site is already situated within an urbanized area, predominantly surrounded by residential and commercial land uses. Existing sources of light, such as those from Highway 10 and the nearby parking lots, contribute to nighttime illumination. The Project will introduce new solar lighting along the proposed walking path, but this is minimal and considered less than significant. Therefore, adverse impacts to daytime or nighttime views are less than significant.
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3.2 Agriculture and Forestry Resources
Would the project:
Environmental Issue
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
Impact
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 (FMMP)
of the California Resources Agency, to non-
agricultural use?
X
b) Conflict with existing zoning for agricultural use,
or a Williamson Act contract? X
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))?
X
d) Result in the loss of forest land or conversion of
forest land to non-forest use? X
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?
X
Discussion:
a) According to the State of California Department of Conservation FMMP, the project site is not located in an area designated as Prime Farmland, Unique Farmland, or Farmland of Statewide Importance.
Therefore, there is no impact to farmland or agricultural resources.
b) The City of Baldwin Park is located within Los Angeles County, which is participating in the 2023 California Williamson Act. However, the project site is not zoned for agricultural use. Consequently, there is no anticipated impact from this designation.
c) The project location area has no forest trees or areas designated for timberland. The Project is located in an urban environment surrounded by areas of residential and commercial land use. The Project will not conflict with existing zoning of forest land, timberland, or timberland zoned Timberland Production. Therefore, there is no anticipated impact.
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d) As discussed above, the Project is not located in forest land, so there will be no loss or conversion of forest land. Therefore, there is no impact.
e) The project site is not located on land designated for agricultural use and will not result in the conversion of farmland to non-agricultural use or forest land to non-forest use. Therefore, no impacts are anticipated.
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3.3 Air Quality
Would the project:
Environmental Issue
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
Impact
a) Conflict with or obstruct implementation of the
applicable air quality plan? X
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?
X
c) Expose sensitive receptors to substantial
pollutant concentrations? X
d) Result in other emissions (such as those leading
to odors) adversely affecting a substantial number
of people?
X
Discussion:
a) The City of Baldwin Park is located within the South Coast Air Basin (SCAB), which is bound by the San Gabriel, San Bernardino, and San Jacinto Mountains to the north and east, and the Pacific Ocean to the south and west. The air quality in the SCAB is managed by the South Coast Air Quality Management District (SCAQMD). The SCAB has a history of recorded air quality violations and is an area where both state and federal ambient air quality standards are exceeded, and therefore, is subject to the 2022 Air Quality Management Plan (AQMP). The 2022 AQMP includes integrated strategies and control measures needed to meet National Ambient Air Quality Standards (NAAQS).
Construction will conform with the requirements of the 2022 AQMP and will use the strategies in the AQMP during all phases of construction. The Project will result in temporary impacts to air quality due to the construction activities, and will therefore have a less than significant impact with the 2022 AQMP.
b) The Project is located in the SCAB, which is a non-attainment area for respirable fine particulate matter (PM) 2.5 (PM
2.5), Lead, and Ozone. The SCAB is a designated attainment area for all other criteria pollutants. The SCAQMD has established Regional Significance Thresholds for each criteria pollutant. Potential air emissions were calculated using the CalEEMod, Version 2022.1.1.28, a model used to quantify air impacts from land use projects located throughout California. Table 3-1 shows the daily emissions rate for unmitigated construction during the summer, in comparison to the Regional Significance Thresholds.
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Table 3-1 Daily Emissions for Construction of the Project Pollutant NOx PM10 PM2.5 SOx CO
Maximum Emissions rate (lbs/day) 10.4 0.76a 0.44b 0.04c 15.9 Mass Daily Thresholds (lbs/day) 100 150 55 150 550
Exceed Threshold? No No No No No
a PM10 total modeled emissions
b PM2.5 total modeled emissions
c SO2 modeled emissions
The Project is not expected to result in a measurable long-term increase in air pollutant emissions.
After construction, the Project will have minimal vehicle trips to the sites for inspection and maintenance procedures. Therefore, impacts would be considered less than significant.
c) Certain residents, such as the very young, the elderly and those suffering from certain illnesses or disabilities, are particularly sensitive to air pollution and are considered sensitive receptors. The sensitive receptors of concern are Kaiser Permanente Medical Center, directly southeast at 1011 Baldwin Park Boulevard, Baldwin Park, CA 91706, Tracy Elementary School, 0.4 miles northeast at 13350 Tracy Street, Baldwin Park, CA 91706, De Anza Elementary School, 0.5 miles northwest at 12820 Bess Avenue, Baldwin Park, CA 91706, Torch Middle School, 0.6 miles southeast at 751 Vineland Avenue, Bassett, CA 91746, and the residential areas surrounding the Project site.
However, the proposed Project will not exceed the Regional Significance Threshold of criteria pollutants; therefore, the proposed Project will have a less than significant impact on nearby sensitive receptors with mitigation measure AIR-1.
d) Project construction equipment and activities, including diesel exhaust emissions, could generate odors. There may be situations where construction activity odors would be noticeable by persons working at or visiting nearby facilities, but these odors would not be unfamiliar or objectionable. In addition, these odors would be temporary and would dissipate rapidly from the source with an increase in distance. There are no long-term odors anticipated from the construction of the Project.
Because there may be short-term odors as a result from the temporary construction of the Project, impacts will be less than significant.
Mitigation Measures:
AIR-1 – Pursuant to Rule 403 of the SCAQMD, the following dust minimizing measures shall be implemented:
City of Baldwin Park and its designees shall comply with all applicable SCAQMD Rules and Regulations, including Rule 403 ensuring the cleanup of construction-related dirt on approach routes to the site. Rule 403 prohibits the release of fugitive dust emissions from any active operation, open storage pile or disturbed surface area visible beyond the property line of the emission source.
City of Baldwin Park and its designees shall comply with all SCAQMD established minimum requirements for construction activities to reduce fugitive dust and PM 10 emissions.
Adequate water techniques shall be employed to mitigate the impact of construction-related dust particulates. Portions of the site that are undergoing surface earth moving operations shall be City of Baldwin Park California Environmental Quality Act Initial Study/Mitigated Negative Declaration
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dewatered such that a crust will be formed on the ground surface, and then watered again at the end of each day. Site watering shall be performed as necessary to mitigate blowing dust. Grading operations shall be suspended during first stage ozone episodes or when winds exceed 25 mph. A high wind response plan shall be formulated for enhanced dust control if winds are forecast to exceed 25 mph in any upcoming 24-hour period. Any construction equipment using direct internal combustion engines shall use a diesel fuel with a maximum of 0.05 percent sulfur and four-degree retard. Construction operations affecting roadways within the project area including detour routes, shall be scheduled by implementing traffic hours and shall minimize obstruction of through traffic lanes.
The engines of idling trucks or heavy equipment shall be turned off if the expected duration of idling exceeds five minutes.
On-site heavy equipment used during grading and construction shall be equipped with diesel particulate filters unless it is demonstrated that such equipment is not available, or its use is not cost-competitive.
All haul trucks leaving or entering the site shall be covered or have at least two feet of freeboard. Any on-site stockpiles of debris, dirt or other dusty material shall be covered or watered twice daily.
Any site access points within 30 minutes of any visible dirt deposition on any public right-of-way shall be mechanically or manually swept.
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3.4 Biological Resources
Would the project:
Environmental Issue
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
Impact
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 Wildlife or U.S. Fish and Wildlife Service?
X
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 Wildlife or US Fish and Wildlife Service?
X
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?
X
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?
X
e) Conflict with any local policies or ordinances
protecting biological resources, such as a tree
preservation policy or ordinance?
X
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?
X
Discussion:
a) Based on a report generated by the U.S. Fish and Wildlife Service (USFWS) Information for Planning and Conservation (IPaC), seven federally listed endangered species have a potential to be present in the area: Coastal California Gnatcatcher, Least Bell’s Vireo, Southwestern Willow Flycatcher, Southwestern Pond Turtle, Monarch Butterfly, Nevin’s Barberry, and Slender-horned Spineflower.
However, no critical habitat overlaps or is designated within the project area for the species above.
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The Project is located in a heavily urbanized area and is less than 100 feet away from San Bernardino Freeway (I-10), it is unlikely that suitable habitat exists for any of these species. The Project will implement various mitigation measures, including pre-construction species surveys and protective actions if special-status species are discovered during construction. Additionally, the Project will incorporate native vegetation, improving local habitat for surrounding species. With the inclusion of Mitigation Measures BIO-1 through BIO-3, the impact on sensitive, special-status, or listed species is expected to be less than significant.
b) According to the National Wetlands Inventory, as mapped by the USFWS, the Project is not located within riparian areas, and therefore, there will be no impact on riparian habitats or other sensitive natural communities. The surrounding areas have been urbanized and developed, so no significant impacts are anticipated.
c) Wetlands, as defined by the federal Clean Water Act, refer to areas that are flooded or saturated by surface water or groundwater at a frequency and duration sufficient to support vegetation adapted to life in saturated soils. These areas include swamps, marshes, streams, lakes, and bogs. There are no wetlands, vernal pools, or similar features within the proposed project site, but the project site is
0.25 miles north of Walnut Creek, a tributary of the San Gabriel River. Walnut Creek has freshwater emergent wetland, freshwater forested/shrub wetland, and riverine regions according to the National Wetlands Inventory mapper. Best Management Practices (BMPs) will be implemented throughout the construction phase to prevent erosion and control dust. During dry weather, flows are expected to be minimal and will be captured by the stormwater management system. During wet weather, the flows intercepted by the Project will not result in significant hydrological impacts. Therefore, with the implementation of Mitigation Measure BIO-3, the project’s impacts on wetlands will be less than significant.
d) The proposed Project is situated in an urbanized area, specifically in an established but vacant park.
It is anticipated that the Project will have minimal impact on local wildlife movement or nurseries.
While the site includes several trees, the urban environment suggests they are unlikely to provide suitable habitat or nesting sites for migratory birds, as defined by the federal Migratory Bird Treaty Act and the California Department of Fish and Wildlife (CDFW) Code, Section 3513 et seq. However, while the likelihood of nesting is low, it is still possible for birds to nest in the area. Project activities could result in the mortality or injury of nestlings, as well as the temporary or long-term loss of suitable foraging habitat.
Given the heavily urbanized nature of the area and the presence of ornamental trees, there is potential for these trees to provide habitat for nesting birds. Construction activities may disturb nesting habitats; therefore, with the implementation of Mitigation Measures BIO-1 through BIO-3, the project’s impacts on nesting birds will be less than significant.
e) The proposed Project will comply with the City’s Municipal Code Chapter 153.165, Tree Preservation and Protection. Therefore, no impact on existing tree preservation policies or ordinance is anticipated.
f) The Project will not conflict with any adopted conservation plan. The Project aligns with the City’s General Plan Health and Sustainability Element goals, including Goals HS-9, to protect and enhance natural features. Therefore, no conflicts with conservation plans are anticipated.
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Mitigation Measures:
BIO-1 – Prior to ground-disturbing activities in areas that could support sensitive biological resources, a habitat assessment shall be conducted by a qualified biologist to determine the potential for special- status wildlife species to occur within affected areas, including areas directly or indirectly impacted by construction or operation of the BMPs. If a special-status wildlife species is found, pre-construction surveys of proposed work zones should be conducted 14 days prior to construction. Areas, including construction areas, staging areas, and right-of-ways, should be staked, flagged, fenced, or otherwise clearly delineated to restrict the limits of construction to the minimum necessary near areas that may support special-status wildlife species with special-status wildlife species; if avoidance is not possible, the City of Baldwin Park should consult with the appropriate regulating agency (USACE/USFWS/CDFW) to determine a strategy for compliance with the Endangered Species Act, California Fish and Wildlife Code, or other regulations supporting special-status species. The City of Baldwin Park will work together with those regulating agencies to determine appropriate impact minimization measures and compensation for any permanent impacts due to the Project. If no breeding and nesting birds and/or raptors are found, then construction may proceed as scheduled with no additional monitoring or measured required.
BIO-2 – To protect nesting birds that may occur on site or adjacent to the Project boundary, no construction shall occur from February 1 through September 15, as early as January 1 for some raptors, unless a qualified biologist completes a survey for nesting bird activity within a 500-foot radius of the construction site. The nesting bird surveys shall be conducted at appropriate nesting times and concentrate on potential roosting or perch sites. The City of Baldwin Park should require surveys be conducted by a qualified biologist no more than 7 days prior to the beginning of any Project-related activity likely to impact raptors and migratory songbirds, for the entire project site. If Project activities are delayed or suspended for more than 7 days during the breeding season, the surveys shall be repeated. If nesting raptors and migratory songbirds are identified, the following minimum no- disturbance buffers shall be implemented: 300 feet around active passerine (perching birds and songbirds) nests, 500 feet around active non-listed raptor nests and 0.5 mile around active listed bird nests. These buffers shall be maintained until the breeding season has ended or until a qualified biologist has determined that the birds have fledged and are no longer reliant upon the nest or parental care for survival. Any sensitive and special status species data documented by the Project shall be submitted to the California Natural Diversity Database with all applicable data fields filled out. The City of Baldwin Park and/or a designee will notify the CDFW once submitted.
BIO-3 – The Project shall implement BMPs to prevent erosion and the discharge of sediment and pollutants into drainages during Project activities. BMPs shall be monitored and repaired, if necessary, to ensure maximum erosion, sediment, and pollution control. The Project proponent shall prohibit the use of erosion control materials potentially harmful to fish and wildlife species, such as mono-filament netting (erosion control matting) or similar material. All fiber rolls, straw wattles, and/or hay bales utilized within and adjacent to the project site shall be free of nonnative plant materials. Fiber rolls or erosion control mesh shall be made of loose-weave mesh that is not fused at the intersections of the weave, such as jute, or coconut (coir) fiber, or other products without welded weaves.
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3.5 Cultural Resources
Would the project:
Environmental Issue
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
Impact
a) Cause a substantial adverse change in the
significance of a historical resource pursuant to §
15064.5?
X
b) Cause a substantial adverse change in the
significance of an archaeological resource pursuant
to § 15064.5?
X
c) Disturb any human remains, including those
interred outside of dedicated cemeteries? X
Discussion:
a) A Cultural Resource Assessment was conducted by Dudek in May 2025. A records search of the surrounding areas via the South Central Coastal Information Center (SCCIC) located on the campus of the California State University, Fullerton included a one-mile buffer of the project location. Data from the SCCIC indicated that there have been 36 previous cultural resources studies conducted within a one-mile radius, with four studies overlapping with the project site. The SCCIC records search did not identify any cultural resources within the Project APE, though it did identify 30 previously recorded cultural resources within a one-mile radius of the Project APE. Of the 30 previously recorded resources, 28 are historic-era built environment resources, one is a historic-era trash scatter, and one is a prehistoric resource containing midden and burials.
Additional research consisting of a review of historic-period maps and aerial photographs shows that the project site was in the vicinity of the historic courses of the Walnut Creek Wash and the San Gabriel River. Additionally, the project site has been subjected to minimal structural development, but the surface area has been previously disturbed by roads, paths, previous and current development, and landscaping.
An NAHC search of the Sacred Lands File (SLF) for the project site and one-mile radius was completed with negative results. Due to the discussion above, impacts to historical resources are anticipated to be less than significant.
b) See discussion above in part a). However, if during construction any archaeological remains are found, all construction will cease until qualified personnel can identify the remains and mitigate the findings. Impacts are anticipated to be less than significant with incorporating mitigation measures CUL-1, through CUL-4.
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c) No formal cemeteries were found on or near the project site. Most Native American human remains are found in association with prehistoric archaeological sites. Mitigation measure CUL-1, through and CUL-3 will be incorporated to reduce potential impacts to less than significant.
Mitigation Measures:
CUL-1 – Prior to the commencement of grading or excavation, all workers and supervisors will receive Worker Environmental Awareness Program (WEAP) training from a qualified archaeologist regarding the potential for sensitive archaeological and paleontological resources to be unearthed during grading activities. The training shall educate and direct the workers to report any unusual specimens of bone, stone, ceramics or other archaeological artifacts or features observed during excavation, grading, and/or other construction activities to their foremen and to cease grading activities in the immediate vicinity of the discovery until a qualified archaeologist or Native American cultural monitor is notified of the discovery at the project site and can assess their significance. Upon completion of the WEAP, workers shall sign a form stating that they attended the program, understand all protection measures, and shall abide by all the rules of the WEAP. If new construction personnel are added to the Project later, the construction foreman shall ensure that new personnel receive training before they start working. The WEAP shall be implemented throughout the duration of project construction. A record of all trained personnel shall be kept at the project field construction office and shall be made available to any resource agency personnel.
CUL-2 – If previously unidentified cultural resources and/or tribal cultural resources are unearthed during ground activity, all work shall immediately be suspended within 100 feet of the discovery and the City shall be immediately notified. A qualified archaeologist and a Native American monitor shall assess the significance of the find and determine if it is a California Register of Historic Resource (CRHR)-eligible archaeological resource and/or tribal cultural resource. If the qualified archaeologist determines that adverse impacts to tribal cultural resources or significant archaeological resources could occur during the Project, then the resources shall be avoided from direct Project impacts by Project redesign, if feasible.
If the resource cannot be avoided, then an archaeological treatment plan shall be developed and implemented.
CUL-3 – In compliance with Section 5097.98 of the Public Resources Code and Section 7050.5 of the California Health and Safety Code, if human remains are encountered, all ground disturbing activities shall be immediately suspended within 100 feet of the discovery, and the County Coroner should be notified immediately. If the Coroner determines the remains are Native American in origin, they must notify the Native American Heritage Commission within 24 hours of such identification so that the Native American Heritage Commission can contact the Most Likely Descendant (MLD). The MLD shall be provided access to the discovery and will provide recommendations for treatment of the remains within 48 hours of accessing the discovery site. The MLD recommendations may include scientific removal and nondestructive analysis of human remains and items associated with Native American burials, preservation of Native American human remains and associated items in place, relinquishment of Native American human remains and associated items to the descendants for treatment, or any other culturally appropriate treatment. Disposition of human remains and any associated grave goods, if encountered, shall be treated in accordance with procedures and requirements set forth in Sections 5097.94 and 5097.98 of the Public Resources Code; Section 7050.5 of the California Health and Safety Code and CEQA Guidelines Section 15064.5.
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CUL-4 – If it can be demonstrated that a project will cause damage to a unique archaeological resource, the lead agency may require reasonable efforts to be made to permit any or all of these resources to be preserved in place or left in an undisturbed state. Preservation in place is the preferred manner of mitigating impacts to archaeological sites. Preservation in place maintains the relationship between artifacts and the archaeological context. Preservation may also avoid conflict with religious or cultural values of groups associated with the site. Examples of that treatment, in no order of preference, may include, but are not limited to, any of the following: planning construction to avoid archaeological sites, deeding archaeological sites into permanent conservation easements, capping or covering archaeological sites with a layer of soil before building on the sites, and planning parks, greenspace, or other open space to incorporate archaeological sites.
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3.6 Energy
Would the project:
Environmental Issue
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
Impact
a) Result in potentially significant environmental
impact due to wasteful, inefficient, or unnecessary
consumption of energy resources, during project
construction or operation?
X
b) Conflict with or obstruct a state or local plan for
renewable energy or energy efficiency? X
Discussion:
a) The proposed sites do not require or result in potentially significant environmental impacts due to wasteful, inefficient, or unnecessary consumption of energy resources during project construction or operation. Minimal energy will be required during operation of the park for solar lighting to illuminate pedestrian pathways during nighttime. Therefore, there is no anticipated impact.
b) The proposed sites will not obstruct a state or local plan for renewable energy or energy efficiency.
Therefore, there is no anticipated impact.
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3.7 Geology and Soils
Would the project:
Environmental Issue
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
Impact
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.
X
ii) Strong seismic ground shaking? X
iii) Seismic-related ground failure, including
liquefaction? X
iv) Landslides? X
b) Result in substantial soil erosion or the loss of
topsoil? X
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?
X
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?
X
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?
X
f) Directly or indirectly destroy a unique
paleontological resource or site or unique geologic
feature?
X
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Discussion:
a)
i) The project site is located in southern California, a seismically active region. Although the Project is not within a known earthquake fault zone as delineated on an Alquist-Priolo Earthquake Fault Zoning Map, the City’s General Plan indicates regional faults within a 50-mile radius of the city that have the potential to cause damage in the City. The General Plan also describes how although unlikely, failure of the Santa Fe Dam due to seismic activity has the potential to impact the City. Therefore, the potential impact from fault rupture is considered less than significant.
ii) The Project site is located in southern California, a seismically active area. However, the likelihood of hazards related to strong seismic ground shaking, such as ground surface rupture, is low. The Project will be designed and constructed in compliance with federal, state, and municipal building codes governing seismic safety. Thus, the impact from strong seismic ground shaking is considered less than significant.
iii) Liquefaction refers to the loss of soil strength in saturated, coarse-grained soils during seismic activity. Liquefaction susceptibility is influenced by soil properties such as grain size, relative density, fines content, and the presence of clay-size fractions. The California Geological Survey indicates that the Project is located within a liquefaction zone. However, the project design will adhere to the recommendations in the project’s geotechnical report to minimize and mitigate potential adverse effects from seismic activity. Therefore, the impact from liquefaction is considered less than significant.
iv) According to the California Geological Survey, the project site is not located in an area identified as a landslide hazard zone. As such, all structures in the project’s design will be protected from landslides and other ground movements. No impact from landslides is anticipated.
b) Construction of the Project will require minimal vegetation removal and involve various earthwork activities, including grading, excavation, and fill, which could result in localized soil erosion. However, standard erosion control measures will be implemented during construction, including revegetation or stabilization of disturbed areas following construction. Therefore, impacts related to erosion are considered less than significant.
c) As noted in Sections 3.7(a) and (b), the Project is not in a fault or landslide zone but is within a liquefaction zone. The Project will incorporate construction practices to minimize and mitigate potential adverse impacts related to soil stability. Therefore, the potential hazards associated with soil stability are considered less than significant.
d) Expansive soils, which expand when wet and shrink when dry, can cause structures to move unevenly, leading to cracking. According to the United States Department of Agriculture (USDA) Web Soil Survey, the entire project site consists of sandy loam, clay loam, and loamy sand. These soil types are generally not expansive. Sand particles provide good drainage and exhibits minimal shrink- swell behavior. Therefore, no impacts are anticipated.
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e) The Project will involve the construction of a restroom facility, but will not require the installation of septic tanks or alternative wastewater disposal systems. Therefore, no impact is anticipated.
f) Since the Project includes earthmoving activities and is expected to extend into these sensitive sediments, excavation, and grading could potentially disturb paleontological resources. The Project will involve significant ground disturbance, including excavation and grading of subsurface materials.
Based on the soil conditions and not anticipating any potential paleontological resources, mitigation measures CUL-1 through CUL-4 will be incorporated to reduced impacts to less than significant.
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3.8 Greenhouse Gas Emissions
Would the project:
Environmental Issue
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
Impact
a) Generate greenhouse gas emissions, either
directly or indirectly, that may have a significant
impact on the environment?
X
b) Conflict with an applicable plan, policy or
regulation adopted for the purpose of reducing the
emissions of greenhouse gases?
X
Discussion:
a) As discussed in the Air Quality impact analysis, the Greenhouse Gas (GHG) emissions generated by the proposed Project would not exceed the SCAQMD threshold of 3,000 metric tons (MT) CO 2e per
year. The construction phase’s GHG emissions were calculated using the CalEEMod, Version 2022.1.1.22. Table 3-2 shows the unmitigated, yearly emissions rate in comparison to the Regional Significance Threshold. Because GHG missions will not exceed the threshold, the Project would have a less than significant impact on GHG.
Table 3-2 Greenhouse Gas Emissions for Project
Pollutant CO2
Maximum Construction Emissions rate (MT/year) 105
SCAQMD Threshold (MT/year) 3,000
Exceed Threshold? No
b) The Project would not conflict with the State plan and policy AB 32 (California Global Warming Solutions Act of 2006) quantitative goal of AB 32 is to reduce GHG emissions to 1990 levels by 2020.
Because the Project does not conflict with an applicable plan, policy, or regulation adopted for the purpose of reducing the emission of GHG, there would be no anticipated impact.
City of Baldwin Park California Environmental Quality Act Initial Study/Mitigated Negative Declaration
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3.9 Hazards and Hazardous Materials
Would the project:
Environmental Issue
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
Impact
a) Create a significant hazard to the public or the
environment through the routine transport, use, or
disposal of hazardous materials?
X
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?
X
c) Emit hazardous emissions or handle hazardous or
acutely hazardous materials, substances, or waste
within one-quarter mile of an existing or proposed
school?
X
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?
X
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 f or people residing or working in
the project area?
X
f) Impair implementation of or physically interfere
with an adopted emergency response plan or
emergency evacuation plan?
X
g) Expose people or structures, either directly or
indirectly, t o a significant risk of loss, injury or
death involving wildland fires?
X
Discussion:
a) Construction activities required for this Project will potentially involve excavation, grading, drilling, and other ground-disturbing activities. Anticipated construction activities may require the transport, storage, use, and disposal of small amounts of hazardous materials that may include gasoline, diesel, hydraulic fluids, oils and lubricants and other similarly related materials for the project site, however, City of Baldwin Park California Environmental Quality Act Initial Study/Mitigated Negative Declaration
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there will be no routine transport, use, or disposal of hazardous materials involved in the operation of the Project. Therefore, the impacts would be less than significant.
b) As described above, there is limited potential for hazardous materials to cause a significant hazard through the routine transport, use, or disposal of hazardous materials. However, such materials will be used during construction of the Project. Handling and disposal of materials during construction would be conducted in compliance with existing federal, state, and county regulations, and would not be expected to result in the accidental release of hazardous materials into the environment.
Therefore, impacts would be less than significant.
c) There are no schools within 0.25 miles of the project site. As discussed earlier, handling and disposal of hazardous materials is anticipated to be minimal, and would be conducted in compliance with existing federal, state, and county regulations. GHG emissions and criteria air pollutants will be emitted, but not in a significant amount, as none of the GHG emissions exceed SCAQMD thresholds.
Therefore, there are no anticipated impacts.
d) There are no Federal Superfund or other cleanup sites within the proposed project site. According to the California Department of Toxic Substances Control, the nearest Federal Superfund site is San Gabriel Valley Superfund Site Area 2, located approximately 2 miles northeast of the project site, covering 10 square miles and includes portions of the cities of Azusa, Irwindale, Baldwin Park and West Covina. The cleanup site is not near the vicinity of the project site, so no impacts are anticipated.
e) The nearest airport is San Gabriel Valley Airport, located approximately 3 miles northwest of the project site. Because the airport is not within 2 miles of the project site, there are no anticipated impacts.
f) The Project will not interfere with any emergency response or evacuation plans. The Project site is near Highway 10, which is designated as a freeway disaster route by the City, but the construction of the Project is not anticipated to affect the highway. Additionally, the Project will not increase the population in the area or the demand for emergency access. Therefore, no impacts are anticipated.
g) According to the Cal OES MyHazards Tool, the City of Baldwin Park is not designated as a Fire Hazard Severity Zone. The City is situated in a highly urbanized area, which reduces the likelihood of exposing people or structures to significant risks from wildland fires. Therefore, no impacts are anticipated.
City of Baldwin Park California Environmental Quality Act Initial Study/Mitigated Negative Declaration
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3.10 Hydrology and Water Quality
Would the project:
Environmental Issue
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
Impact
a) Violate any water quality standards or waste
discharge requirements or otherwise substantially
degrade surface or ground water quality?
X
b) Substantially decrease groundwater supplies or
interfere substantially with groundwater recharge
such that the project may impede sustainable
groundwater management of the basin?
X
c) Substantially alter the existing drainage pattern
of the site or area, including through the alteration
of the course of a stream or river o r through the
addition of impervious surfaces, in a manner which
would:
i) result in substantial erosion or siltation on- or off- site; X
ii) substantially increase the rate or amount of
surface runoff in a manner which would result in
flooding on- or offsite;
X
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
X
iv) impede or redirect flood flows? X
d) In flood hazard, tsunami, or seiche zones, risk
release of pollutants due to project inundation? X
e) Conflict with or obstruct implementation of a
water quality control plan or sustainable
groundwater management plan?
X
Discussion:
a) The proposed Project would not significantly violate water quality standards, waste discharge requirements, or surface or ground water quality because project construction would comply with regulations instated by the Federal Clean Water Act, Los Angeles Regional Water Quality Control Board (LARWQCB), Los Angeles County, City of Baldwin Park, and other water quality control City of Baldwin Park California Environmental Quality Act Initial Study/Mitigated Negative Declaration
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regulations. BMPs will be implemented with respect to machinery and other contaminants. During construction, silt fencing or other sediment control BMPs will be placed around the perimeter of the construction site to prevent sediment from construction related activities from leaving the Project site. Gravel bags, plastic covers, erosion control blankets, and/or other erosion control BMPs will be implemented to be consistent with the Project’s erosion control plan. In the event of a hazardous materials spill, it will be immediately reported to the appropriate public agencies, including the City, the U.S. Army Corps of Engineers (USACE), LARWQCB, and CDFW. Therefore, impacts are anticipated to be less than significant.
b) Groundwater supplies will not be affected since the project does not include the installation of any groundwater wells and does not have additional demand for groundwater. The Project will capture and infiltrate dry- and wet-weather runoff and will replenish groundwater thereby providing a beneficial impact. Therefore, there are no anticipated impacts.
c) The project site is an existing surface drainage basin that takes runoff from nearby roadways and Caltrans Highway. The project would incorporate the existing surface basin into a subsurface basin which will receive existing runoff and infiltrate the runoff to recharge groundwater supplies.
i. The Project is located in an area that is urbanized, developed and mostly impervious.
The Project will not result in substantial erosion or siltation on- or off-site as it will not alter the existing drainage patterns of the site. As noted in Section 3.10(a), construction BMPs will be implemented to prevent erosion or siltation during construction. Therefore, impacts are anticipated to be less than significant.
ii. The Project will not substantially increase surface runoff or significantly raise the imperviousness of the area, which could lead to flooding on or offsite. The park design features bioswale drains that will capture surface runoff to the stormwater capture system, reducing surface runoff. Therefore, there is no anticipated impact.
iii. The bioswale system will not create or contribute to runoff water or additional sources of polluted runoff or exceed the capacity of the drainage system. Therefore, there is no anticipated impact.
iv. The Project is not expected to impede or redirect flood flows as flows are not being diverted. Therefore, there are no anticipated impacts on flood flow patterns.
d) The proposed Project is not located within a flood hazard zone, tsunami, or seiche zone. According to the Federal Emergency Management Agency (FEMA), the project area is situated in Zone X, a low- risk area for flooding and is outside the 0.2% annual chance flood area. The proposed Project is approximately 23 miles northeast of the Pacific Ocean and is situated 315 feet above sea level.
Therefore, there are no anticipated impacts.
e) The Project will not conflict with the Los Angeles Region Basin Plan for the Coastal Watersheds of Los Angeles. All new developments are required to implement site design measures and BMPs to protect water quality and maintain natural drainage systems. Therefore, no impacts to water quality or drainage are anticipated.
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3.11 Land Use and Planning
Would the project:
Environmental Issue
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
Impact
a) Physically divide an established community? X
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?
X
Discussion:
a) The Project is located within the City of Baldwin Park and must adhere to the City’s adopted plans, policies, and regulations. The Project is designed to enhance community connectivity by incorporating active and passive recreational features. These facilities are not expected to physically divide or disrupt the surrounding community. Consequently, no impact is anticipated.
b) The project site is currently not designated as a specific zone, but the area is recognized as Roadside Park in the City’s General Plan, with limited use due to its current vacancy. The area is surrounded by commercial and residential land. The implementation of the Project will not conflict with any applicable land use plans, policies, or regulations intended to prevent or mitigate environmental impacts. The Project will further the City’s environmental efforts. As a result, no significant impact is anticipated.
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3.12 Mineral Resources
Would the project:
Environmental Issue
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
Impact
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?
X
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?
X
Discussion:
a) The Surface Mining and Reclamation Act of 1975 (SMARA) mandates the classification of land into Mineral Resource Zones (MRZs) based on the known or inferred mineral potential of the area. The MRZ categories are as follows:
MRZ-1: Areas where adequate information indicates that no significant mineral deposits are present or where it is judged that little likelihood exists for their presence. MRZ-2: Areas where adequate information indicates significant mineral deposits are present, or where it is judged that a high likelihood exists for their presence. MRZ-3: Areas containing mineral deposits the significance of which cannot be evaluated from available data.
MRZ-4: Areas where available information is inadequate for assignment to any other MRZ
The entirety of the City is classified by the California Geological Survey as MRZ-2, indicating an area where adequate information indicates significant mineral deposits are present. The City’s General Plan describes that the City is almost entirely built out, so areas containing significant resources are developed and therefore incompatible with mineral extraction and surface mining activities. Therefore, no impact is anticipated.
b) As noted above, mineral resources within the Project site and the City are inaccessible.
Consequently, the Project will not result in the loss of significant mineral resource recovery sites, and therefore, no impact is anticipated.
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3.13 Noise
Would the project:
Environmental Issue
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
Impact
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?
X
b) Generation of excessive groundborne vibration or
groundborne noise levels? X
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?
X
Discussion:
a) The Project is primarily surrounded by residential and commercial zoned properties.
Because implementation of the Project may result in the generation of construction noise within the areas surrounding the Project during construction and project operations, a Noise Assessment was performed on June 27, 2025. To identify baseline noise conditions, short-term ambient noise level measurements at the Project and at nearby representative sensitive receptors were recorded utilizing sound level meters, as shown in Figure 3-1. The ambient noise level measurements were taken during day-time hours, or when construction would typically occur. Table 3-3 shows the results of the noise assessment, identifying minimum, average, and maximum A-weighted decibels (dBA) at nearby sensitive and residential land uses.
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Table 3-3 Noise Assessment Results
Number Location Description Minimum
(dBA)
Average
(dBA)
Maximum
(dBA)
1 Bess Avenue and Leorita Street 53 62 78
2 Leorita Street and Judith Street 41 52 87
3 Amar Road 42 53 68
4 Baldwin Park Boulevard and Bess
Avenue 52 65 87
5 Kaiser Permanente Baldwin Park 45 54 67
6 Dalewood Street 65 75 85
7 Parkwood Place 22 50 65
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Figure 3-1 Noise Measurement Locations
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Construction will take place between the hours of 8:00 AM until 5:00 PM Monday through Friday. The Baldwin Park Municipal code has exemptions for Noise listed in Chapter 130.37, which includes construction. Construction hours are limited to between 7:00 am and 7:00 pm. The City’s Municipal Code also states that noise levels must meet the criteria based on land use, as depicted in Table 3-4.
Table 3-4 City of Baldwin Park Land Use Guidelines for Exterior Noise Noise Zone
Allowable Noise Level (dBA)
Day
(7:00 am - 10:00 pm)
Night
(10:00 pm - 7:00 am)
Single-Family Residential 55 45
High Density Residential, Residential Garden 60 55
Commercial 65 60
Industrial 70 70
As shown in Table 3-5, the Federal Highway Administration (FHWA) identified predicted noise limits at a reference distance of 50 feet. By utilizing these values, noise levels at nearby sensitive receptors can be calculated and predicted.
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Table 3-5 Construction Equipment Noise Emission Levels Equipment Description Lmax Noise Limit at 50 feet., dB
Slow
Is Equipment an Impact
Device?
All other equipment > 5HP 85 No
Backhoe 78 No
Compactor (ground) 83 No
Compressor (air) 78 No
Concrete Mixer Truck 79 No
Concrete Saw 90 No
Crane 81 No
Dozer 82 No
Dump Truck 76 No
Excavator 81 No
Flat Bed truck 74 No
Front End Loader 79 No
Generator 81 No
Impact/Vibratory Pile Driver 101 Yes
Jackhammer 89 Yes
Mounted Impact Hammer 90 Yes
Pavement Scarifier 85 No
Pumps 81 No
Roller 80 No
Sand Blasting (single nozzle) 96 No
Slurry Trenching Machine 80 No
Vacuum Street Sweeper 82 No
Welder / Torch 74 No
Construction activities for this Project will comply with the City’s Noise Ordinance and meet all noise level requirements. The nearest sensitive receptors are the residential homes near the Project. The Project will potentially involve excavation, grading, drilling, trenching, pile driving, and other ground disturbing activities. Noise generated from construction activities would be temporary. During construction of the Project, the contractor will be required to use construction muffler devices, sound blankets, or other means to reduce noise levels to ambient levels. No long-term noise impacts are anticipated from the Project since there are no components as a part of the project that would produce noise.
Therefore, with incorporation of mitigation measures NOISE-1 through NOISE-3, impacts by noise from construction would be less than significant. Excessive noise levels will no longer occur from the Project once construction is complete.
b) Construction of the Project will generate some groundborne vibrations as part of the construction activities. The Project is expected to utilize equipment that may typically produce higher vibration levels, such as pile drivers and bulldozers. However, with the implementation of mitigation measures City of Baldwin Park California Environmental Quality Act Initial Study/Mitigated Negative Declaration
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NOISE-1 through NOISE-3, the impacts from groundborne vibrations are anticipated to be less than significant. Once construction is completed, all groundborne vibrations will cease.
c) The Project is not located within an airport land use designation and is situated more than two miles from San Gabriel Valley Airport. As a result, the Project will not expose people residing or working in the area to excessive noise levels associated with airport operations. Therefore, there is no anticipated impact.
Mitigation Measures:
NOISE-1 – The City of Baldwin Park and their designees shall implement the following measures during construction as needed:
Include design measures necessary to reduce the construction noise levels where feasible. These measures may include noise barriers, curtains, or shields. Place noise-generating construction activities (e.g., operation of compressors and generators, cement mixing, general truck idling) as far as possible from the nearest noise-sensitive land uses. Locate stationary construction noise sources as far from adjacent noise-sensitive receptors as possible.
Identify a liaison for off-site sensitive receptors, such as residents and property owners, to contact with concerns regarding construction noise and vibration. The liaison’s telephone number(s) shall be prominently displayed at construction locations. Notify, in writing, all landowners, occupants of properties adjacent to the construction area, and nearby sensitive receptors of the anticipated construction schedule at least 2 weeks prior to groundbreaking.
Prepare visible signs indicating “Noise Control Zone.” Use noise-control devices that meet original specifications and performance. To the extent practical, use electrically-powered equipment. Implement temporary noise barriers and sound-control curtains where project activity is unavoidably close to noise-sensitive receivers. In particular, noise barriers of 8 feet and 12 feet tall should be established around work sites to remove noise impacts from the different construction operation areas. The construction contractor should regularly evaluate the noise level at nearby sensitive receptors to ensure noise levels are not in exceedance. If so, the following noise barrier measures should also be incorporated:
Break line of sight from noise source to receiver
Use a frame to secure an appropriate acoustic blanket or paneling Use a solid material with a minimum surface density of 3 lb/ft 2 or mass-loaded acoustic
blankets with at least STC 25
Overlap or seal any gaps in the barriers
Designate haul routes to be used based on the least overall noise impact route, with heavily- loaded trucks away from residential streets, if possible. Identify haul routes streets with the fewest noise sensitive receivers if no alternatives are available.
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Place earth-moving equipment, fixed noise-generating equipment, stockpiles, staging areas, and other noise-producing operations as far as practicable from noise-sensitive receivers. Eliminate the use of horns, whistles, alarms, and bells. Phase demolition, earth moving, and ground impacting operations so they do not occur in the same time period.
In the case of nighttime construction, the contractor shall comply with the provisions of the nighttime noise variance issued by the City.
Conduct periodic noise measurements in accordance with an approved noise monitoring plan, specifying monitoring locations, equipment, procedures, and schedule of measurements and reporting methods to be used.
NOISE-2 – All construction activities that employ mechanized stationary equipment that generate noise levels shall comply with the applicable noise standards established by the City of Baldwin Park. The equipment shall be designed with noise-attenuating features (e.g., enclosures) and/or located at areas (e.g., belowground) where nearby noise-sensitive land uses would not be exposed to a perceptible noise increase in their noise environment.
NOISE-3 – To prevent impacts from vibrations, large vibration producing equipment should be placed as far as is feasible from sensitive receptors. Furthermore, the City of Baldwin Park and their designees should implement the following measures as needed:
Pre-construction Survey - A before and after survey should include inspecting building foundations and taking photographs (or installing crack monitors) of pre-existing conditions, cracks, or other flaws. The survey can be limited to buildings closest to the pile driving activities, except for the case of unusually fragile or historic structures that are located within approximately 200 feet of construction.
Sonic Pile Driving - At the upper range reference vibration for the sonic/vibratory pile driver, the risk for damage to nearby buildings begins when the equipment is 32 feet or closer to the structure. The nearest piling is expected to be 20 feet from the closest structure, so vibration limit exceedances would remain with use of a vibratory pile driver. Drilled Piles - Noise emission levels from bored/drilled pilling methods are approximately 15 dB lower and peak particle velocity (PPV) levels may be more than 15 times lower than those due to traditional impact piling. The use of these methods will eliminate the vibration impacts of all receivers. These methods will also substantially reduce the noise impacts and in most cases they will also be eliminated, with the use of a suitable noise barrier. Hammer Energy - A recommended way to reduce PPV is to lower the hammer energy since there is a direct relationship between hammer energy and the resultant ground vibration. Ground PPV generally follows a square root relationship with hammer energy (i.e. PPV ~ √Hammer Energy).
The degree of hammer energy reduction must be balanced against the likelihood/severity of expected exceedances, increase in total driving time, and ability to drive to required friction tolerances.
Vibration Monitoring - It is recommended that vibration monitoring be conducted at any building where equipment is operating closer than the limits noted in Table 3-6.
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Table 3-6 Construction Equipment Vibration Reference Levels Equipment Description Minimum Separation Distance
Pile Driver (impact) 52 feet
Pile Driver (Vibratory) 32 feet
Vibratory Roller 14 feet
Compactor (Ground) 13 feet
Large Bulldozer 8 feet
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3.14 Population and Housing
Would the project:
Environmental Issue
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
Impact
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)?
X
b) Displace substantial numbers of existing people
or ho using, necessitating the construction of
replacement housing elsewhere?
X
Discussion:
a) The Project will not induce substantial unplanned population growth, either directly or indirectly. Its primary objective is to provide water quality improvements and enhance open space areas, not to develop new homes, businesses, or infrastructure that would attract population growth. Since the Project does not involve the construction of additional housing or commercial developments, nor does it extend roads or infrastructure in a way that would support such growth, population increase is anticipated, and no related impacts are expected.
b) The Project will not affect any residential areas, housing units, or other buildings, and there are no plans to displace any individuals or families. As such, no displacement of people is anticipated, and the construction of replacement housing elsewhere is not necessary. Therefore, no impacts related to displacement are anticipated.
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3.15 Public Services
Would the project:
Environmental Issue
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
Impact
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:
i. Fire protection? X
ii. Police protection? X
iii. Schools? X
iv. Parks? X
v. Other public facilities? X
Discussion:
a)
i. The nearest fire stations are Los Angeles County Fire Department Station 87, approximately
1.4 miles southwest of the Project at 140 S. 2
nd Avenue, Bassett, CA 91746, and Los Angeles
County Fire Department Fire Station 168, approximately 1.7 miles west of the Project at 3207 Cogswell Road, El Monte, CA 91732. If at any point during construction it is needed to close lanes or affect the flow of traffic, emergency services will be notified 10 days before construction. The construction of the Project will improve open space, and as a result, could potentially require emergency services should a fire or other significant emergency occur at the park. However, impacts are expected to be less than significant with mitigation measures incorporated.
ii. The nearest police station is Baldwin Park Police Department, approximately 2.1 miles northeast of the Project at 14403 Pacific Avenue, Baldwin Park, CA 91706. If at any point during construction it is needed to close lanes or affect the flow of traffic, emergency services will be notified 10 days before construction. The construction of the Project could attract people for recreational purposes, and therefore, could impact police services in the future. However, impacts are expected to be less than significant with mitigation measures incorporated.
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iii. The nearest schools are Tracy Elementary School, 0.4 miles northeast at 13350 Tracy Street, Baldwin Park, CA 91706, De Anza Elementary School, 0.5 miles northwest at 12820 Bess Avenue, Baldwin Park, CA 91706, and Torch Middle School, 0.6 miles southeast at 751 Vineland Avenue, Bassett, CA 91746. The Project is not anticipated to impact operations or increase student population. The Project will temporarily impact normal traffic levels during construction; therefore, impacts would be less than significant.
iv. The proposed Project will enhance open space areas. This will provide a benefit to the community and help reach the goals from the City’s General Plan. Consequently, other parks’ number of recreational users may fluctuate. Therefore, there is a less than significant impact.
v. Other services, such as City Hall, public libraries, and municipal services, are located outside of the Project’s area. While City staff will be needed to maintain park functions, impacts to service ratios are not expected to be significant. As a result, impacts would be less than significant.
Mitigation Measures:
PS-1 – The City shall provide reasonable advance notification to service providers such as fire, police, and emergency medical services as well as to local businesses, homeowners, and other residents adjacent to and within areas potentially affected by the proposed Project about the nature, extent, and duration of construction activities. Interim updates should be provided to inform the public of the status of the construction activities.
PS-2 – The City shall provide advance notice (at least 10-days prior) to emergency (fire, police, medical) services for any lane or street closures that may impact traffic circulation during construction.
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3.16 Recreation
Would the project:
Environmental Issue
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
Impact
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?
X
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?
X
Discussion:
a) The proposed Project will enhance public park space within an urban environment. While this may result in increased use of existing neighborhood parks, potentially accelerating the physical deterioration of those facilities, no population growth is anticipated. Key BMPs, including the installation of bioswales and/or rain gardens, will be implemented alongside improvements to park facilities and city infrastructure. Therefore, the impacts are expected to be less than significant.
b) The proposed Project will feature amenities such as a nature-based playground, shade structure, outdoor fitness equipment, picnic areas, restroom facility, irrigation system and walking path with solar lighting, and recycled benches and tables. The native plants and pollinator garden in the proposed park is likely to enhance the surrounding environment, thereby increasing and improving the recreational services available to the local community. Consequently, impacts are expected to be less than significant.
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3.17 Transportation/Traffic
Would the project:
Environmental Issue
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
Impact
a) Conflict with a program plan, ordinance or policy
addressing the circulation system, including transit,
roadway, bicycle and pedestrian facilities?
X
b) Would the project conflict or be inconsistent
with CEQA Guidelines section 15064.3, subdivision
(b)?
X
c) Substantially increase hazards due to a
geometric d esign feature (e.g., sharp curves or
dangerous intersections) or incompatible uses
(e.g., farm equipment)?
X
d) Result in inadequate emergency access? X
Discussion:
a) The Project will not conflict with any program, plan, ordinance, or policy addressing the circulation system. Roadways will not be modified as part of the Project, and therefore, no impacts are anticipated. There are no bike lanes or bike routes within the project site, so no impacts are anticipated in this regard. Although Baldwin Park Transit routes are along the Project area boundary on Dalewood Street, roadway impacts will be temporary during construction and return to normal usage once construction is completed. During design, the project developers should review if any multi-modal infrastructure, including ADA-compliant sidewalks, high-visibility crosswalks, Class IV bike lanes, and bike parking can be incorporated on site. While construction activities may temporarily affect pedestrian crosswalks and surrounding roads, these impacts are expected to be less than significant.
b) CEQA Guidelines Section 15064.3(b) provides criteria for evaluating transportation impacts, including those related to land use and transportation projects, qualitative analysis, and methodology.
According to the guidelines, projects located within 0.5 miles of an existing transit stop or transit corridor are presumed to result in a less-than-significant transportation impact. Although there are transit stops within 0.5 miles of the project site, the Project is not anticipated to interfere with these transit stops or affect transit routes. Therefore, transportation impacts are anticipated to be less than significant.
c) The Project does not require street reconfiguring, lane geometry and re-striping for vehicles and bicycles, lane transitions, transit stop and bus shelters, or curb and street engineering modifications.
The Project will not alter any traffic design features and therefore, there is no anticipated impact.
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d) The Project is near Highway 10, which is designated as a freeway disaster route. However, there are no anticipated impacts to the highway. Because the project sites do not anticipate an increase in population to the area, emergency services are not expected to be impacted. While it is expected that the majority of construction activities of the Project would be confined on-site, construction activities may involve temporary lane closures in the surrounding areas. With the mitigation measure TRAF-1 through TRAF-2, the Project will provide emergency access at all times and therefore will not result in inadequate emergency access. Therefore, impacts will be less than significant with mitigation measures.
Mitigation Measures:
TRAF-1 – The Contractor will notify local Police and Fire Departments in its intent to for lane closure at least ten (10) days before Work is to begin. The Contractor shall cooperate with local authorities relative to handling traffic through the area.
TRAF-2 – Transportation of heavy construction equipment and/or materials which requires use of oversized-transport vehicles on State highways will need a Caltrans transportation permit. Project specifications will limit construction traffic to off-peak periods to minimize the potential impact on State facilities. If construction traffic is expected to cause delays on any State facilities, a construction traffic control plan detailing these delays shall be submitted for Caltrans’ review.
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3.18 Tribal Cultural Resources
Would the project:
Environmental Issue
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
Impact
a) 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
X
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.
X
Discussion:
a)
i. According to the Cultural Resource Assessment conducted by Dudek in May 2025, the Sacred Lands File search with the NAHC has been completed, and results are negative for Native American cultural resources within one mile of the Project. Although there are no known tribal cultural resources identified at the project site to date, consultation and mitigation measures below would ensure impacts to Sacred Lands or tribal cultural resources would be less than significant with mitigation incorporated.
ii. The California Native American Heritage Commission (NAHC) was consulted about the Project and results were negative for sacred sites within the project area.
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The City of Baldwin Park sent out notification letters to the Soboba Band of Luiseno Indians, Gabrieleno Band of Mission Indians-Kizh Nation, and Gabrieleno-Tongva Tribe, pursuant to Assembly Bill 52 and Public Resources Code Section 21080.3.1.
Mitigation Measures:
TCR-1 – Retain a Native American Monitor 30 Days Prior to Commencement of Ground-Disturbing Activities.
The City of Baldwin Park shall retain a Native American Monitor. 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.
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 City of Baldwin Park upon written request to the Tribe.
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 until the discovered TCR has been fully assessed by the Native American Monitor or qualified archaeologist. The Native American Monitor or qualified archaeologist 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-2 – Unanticipated Discovery of Human Remains and Associated Funerary Objects
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 discovered or recognized on the project site, then all construction activities shall immediately cease. Health and Safety Code Section 7050.5 dictates that any discoveries of human skeletal material shall be immediately reported to the County Coroner and all ground-disturbing activities shall immediately halt and shall remain halted until the coroner has determined the nature of the remains. If the coroner recognizes the human remains to be those of a Native American or has reason to believe they are Native American, he or she shall contact, by telephone within 24 hours, the Native American Heritage Commission, and Public Resources Code Section 5097.98 shall be followed.
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Human remains and grave/burial goods shall be treated alike per California Public Resources Code section 5097.98(d)(1) and (2).
Construction activities may resume in other parts of the project site at a minimum of 200 feet away from discovered human remains and/or burial goods, if the monitor determines in its sole discretion that resuming construction activities at that distance is acceptable and provides the project manager express consent of that determination (along with any other mitigation measures the Native American monitor and/or archaeologist deems necessary). (CEQA Guidelines Section 15064.5(f).)
Preservation in place (i.e., avoidance) is the preferred manner of treatment for discovered human remains and/or burial goods. Any historic archaeological material that is not Native American in origin (non-TCR) shall be curated at a public, non-profit institution with a research interest in the materials, if such an institution agrees to accept the material. If no institution accepts the archaeological material, it shall be offered to a local school or historical society in the area for educational purposes.
Any discovery of human remains/burial goods shall be kept confidential to prevent further disturbance.
TCR-3 – Procedures for Burials and Funerary Remains
The Burial Policy of the MLD shall be implemented. “Human remains” encompasses more than human bones. In ancient as well as historic times, Tribal Traditions included, but were not limited to, the preparation of the soil for burial, the burial of funerary objects with the deceased, and the ceremonial burning of human remains.
If the discovery of human remains includes four or more burials, the discovery location shall be treated as a cemetery and a separate treatment plan shall be created.
The prepared soil and cremation soils are to be treated in the same manner as bone fragments that remain intact. Associated funerary objects are objects that, as part of the death rite or ceremony of a culture, are reasonably believed to have been placed with individual human remains either at the time of death or later; other items made exclusively for burial purposes or to contain human remains can also be considered as associated funerary objects. Cremations will either be removed in bulk or by means as necessary to ensure complete recovery of all sacred materials.
In the case where discovered human remains cannot be fully documented and recovered on the same day, the remains will be covered with muslin cloth and a steel plate that can be moved by heavy equipment placed over the excavation opening to protect the remains. If this type of steel plate is not available, a 24-hour guard should be posted outside of working hours. The Tribe will make every effort to recommend diverting the project and keeping the remains in situ and protected. If the project cannot be diverted, it may be determined that burials will be removed.
In the event preservation in place is not possible despite good faith efforts by the project applicant/developer and/or landowner, before ground-disturbing activities may resume on the City of Baldwin Park California Environmental Quality Act Initial Study/Mitigated Negative Declaration
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project site, the landowner shall arrange a designated site location within the footprint of the project for the respectful reburial of the human remains and/or ceremonial objects.
Each occurrence of human remains and associated funerary objects will be stored using opaque cloth bags. All human remains, funerary objects, sacred objects and objects of cultural patrimony will be removed to a secure container on site if possible. These items should be retained and reburied within six months of recovery. The site of reburial/repatriation shall be on the project site but at a location agreed upon between the Tribe and the landowner at a site to be protected in perpetuity. There shall be no publicity regarding any cultural materials recovered.
The Tribe will work closely with the project’s qualified archaeologist to ensure that the excavation is treated carefully, ethically and respectfully. If data recovery is approved by the Tribe, documentation shall be prepared and shall include (at a minimum) detailed descriptive notes and sketches. All data recovery data recovery-related forms of documentation shall be approved in advance by the Tribe. If any data recovery is performed, once complete, a final report shall be submitted to the Tribe and the NAHC. The Tribe does NOT authorize any scientific study or the utilization of any invasive and/or destructive diagnostics on human remains.
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3.19 Utilities and Service Systems
Would the project:
Environmental Issue
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
Impact
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 telecommunication facilities, the
construction or relocation of which could cause
significant environmental effects?
X
b) Have sufficient water supplies available to serve
the project a nd reasonably foreseeable future
development during normal, dry, and multiple dry
years?
X
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?
X
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?
X
e) Comply with federal, state, and local
management and reduction statutes and
regulations related to solid waste?
X
Discussion:
a) The proposed Project includes the construction of a stormwater infiltration system. Additionally, the Project will enhance the existing park and open space area. The Project is not expected to significantly increase the load on any utility or service system. Impacts will be mitigated through improvements in water quality, increased groundwater supply, and the revitalization of park facilities with nature-based stormwater management solutions. Therefore, the impacts are expected to be less than significant.
b) The proposed Project will incorporate native, predominantly drought-tolerant landscaping, allowing the plants to thrive during both normal and dry years. The design also includes the installation of efficient, low-water-use irrigation systems. The Project’s bioswale basin will rely on water to enhance the local water supply. Therefore, the impacts are anticipated to be less than significant.
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c) The Project includes the construction of a restroom facility in the park. The restroom will have a minimal increase in wastewater generated from the site as the site is a park facility and has minimal wastewater at the site. There is existing City sewer in the area that has the capacity to handle this increased wastewater flow. Therefore, this is not anticipated to significantly increase the capacity of wastewater demand for the treatment provider. Therefore, the impacts are anticipated to be less than significant.
d) During construction, some debris may be generated. However, the amount of waste is expected to be minimal and should not exceed the capacity of local infrastructure or interfere with the achievement of solid waste reduction goals. Therefore, impacts to local infrastructure and solid waste reduction goals are expected to be less than significant.
e) Waste disposal BMPs involve strategies to reduce, manage, and properly dispose of waste generated during construction or operation. These practices include waste segregation, recycling, hazardous waste management, and minimizing waste generation, ensuring that materials are disposed of in an environmentally responsible manner while complying with all applicable federal, state, and local regulations. Disposal will adhere to all relevant regulatory requirements. Therefore, no significant impacts are anticipated.
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3.20 Wildfire
Would the project:
Environmental Issue
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
Impact
a) Substantially impair an adopted emergency
response plan or emergency evacuation plan? X
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?
X
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?
X
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?
X
Discussion:
a) According to the CAL FIRE Fire Hazard Severity Zones Viewer, the Project area is not within a fire hazard severity zone. Although the Project may impact traffic on the surrounding roads, and emergency services will be notified 10 days in advance before road closures. Therefore, there is less than significant impact anticipated.
b) The proposed Project will feature native vegetation, which are all flammable and susceptible to wildfires, but due to the Project’s location in a highly urbanized area, there is no potential for wildfires. Therefore, there would be no anticipated impact.
c) The Project will not require the installation or maintenance of infrastructure, such as roads, fuel breaks, emergency water sources, power lines, or other utilities that may exacerbate fire risk.
Therefore, the Project would not exacerbate fire risk, and there would be no impact.
d) The Project is built on a relatively flat and urbanized area. The Project is not anticipated to expose people or structures to significant risks of flooding or landslides. Therefore, there would be no anticipated impact.
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3.21 Mandatory Findings of Significance
Would the project:
Environmental Issue
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
Impact
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?
X
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)?
X
c) Does the project have environmental effects
which will cause substantial adverse effects on
human beings, either directly or indirectly?
X
Discussion:
a) Due to its location in an urbanized environment, the Project is not anticipated to affect the quality of the environment, habitat, fish, wildlife, or plant populations at the project site during construction or post-construction. Consequently, the Project will result in a less-than-significant impact, provided that appropriate mitigation measures are implemented.
b) The proposed Project would result in significant impacts unless mitigated for the following environmental issues: air quality, biology, cultural, noise, public services, transportation, and tribal cultural resources. Mitigation measures have been identified for each of these environmental areas to reduce impacts to a level that is less than significant. Cumulatively, the proposed Project will not result in any significant impacts that would combine substantially with impacts from other current or foreseeable future developments, assuming all other projects within the city comply with the established regulatory framework.
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c) The Project may have potential environmental effects on humans, most of which would be related to construction activities. These impacts are primarily associated with noise and air quality. As discussed in Section 3.3 and Section 3.13, these impacts are considered less than significant, or mitigation measures will be implemented to protect nearby sensitive receptors.
The Project will comply with all applicable local, state, and federal regulations. Therefore, potential impacts on human health and well-being would be less than significant with the incorporation of mitigation measures.
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4. References
Baldwin Park, City of. City of Baldwin Park 2020 General Plan. Air Quality Element. November 2002. https://www.baldwinpark.com/DocumentCenter/View/569/Air-Quality-PDF
Baldwin Park, City of. City of Baldwin Park 2020 General Plan. Circulation Element. November 2002. https://www.baldwinpark.com/DocumentCenter/View/558/Circulation-PDF
Baldwin Park, City of. City of Baldwin Park 2020 General Plan. Land Use Element. November 2002. https://www.baldwinpark.com/DocumentCenter/View/562/Land-Use-PDF
Baldwin Park, City of. City of Baldwin Park 2020 General Plan. Noise Element. November 2002. https://www.baldwinpark.com/DocumentCenter/View/563/Noise-PDF
Baldwin Park, City of. City of Baldwin Park 2020 General Plan. Open Space and Conservation Element.
November 2002.
https://www.baldwinpark.com/DocumentCenter/View/564/Open-Space-Conservation- PDF#:~:text=The%20City's%20Park%20Master%20Plan%20designates%20over%20530%20ac res%20of,%2Dway%2C%20and%20water%20channels.
Baldwin Park, City of. City of Baldwin Park 2020 General Plan. Public Safety Element. November 2002. https://www.baldwinpark.com/DocumentCenter/View/565/Public-Safety-PDF
Baldwin Park, City of. City of Baldwin Park 2020 General Plan. Urban Design Element. November 2002. https://www.baldwinpark.com/DocumentCenter/View/566/Urban-Design-PDF
Baldwin Park, City of. City of Baldwin Park General Plan. Health and Sustainability Element. April 1, 2015.
https://www.baldwinpark.com/DocumentCenter/View/568/Health-and-Sustainability-Element-PDF
Baldwin Park, City of. City of Baldwin Park General Plan Land Use Map. September 2023. https://www.baldwinpark.com/DocumentCenter/View/598/General-Plan-Map-Updated- September-2023-PDF?bidId=
CAL FIRE. Fire Hazard Severity Zones in SRA. 2024.
https://osfm.fire.ca.gov/what-we-do/community-wildfire-preparedness-and-mitigation/fire- hazard-severity-zones
Cal OES. MyHazards.
https://myhazards.caloes.ca.gov/
CalEEMod. California Emissions Estimator Model.
CalEEMod - https://www.caleemod.com/model
California Department of Conservation. California Important Farmland Finder. https://maps.conservation.ca.gov/dlrp/ciff/
City of Baldwin Park California Environmental Quality Act Initial Study/Mitigated Negative Declaration
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California Department of Conservation. California Williamson Act Enrollment Finder. https://maps.conservation.ca.gov/dlrp/WilliamsonAct/
California Department of Conservation. Earthquake Fault Zones. https://maps.conservation.ca.gov/cgs/informationwarehouse/eqzapp/
California Department of Toxic Substances Control. Envirostor. https://www.envirostor.dtsc.ca.gov/public/map/?global
California Department of Transportation. California Scenic Highway Mapping System. https://caltrans.maps.arcgis.com/apps/webappviewer/index.html?id=465dfd3d807c46cc8e80571 16f1aacaa
City of Baldwin Park Press Release. September 30, 2024. https://www.baldwinpark.com/DocumentCenter/View/2447/24-10-Baldwin-Park-Secures-21- Million-Federal-Grant-to-Build-New-Roadside-Park
Cultural Resources Inventory Letter Report for the Roadside Park Project, City of Baldwin Park, California. Dudek. May 20, 2025.
FEMA Flood Map Service Center.
https://msc.fema.gov/portal/search?AddressQuery=manhattan%20beach%2C%20ca#searchresu ltsanchor
Los Angeles County. Disaster Routes. September 8, 2008. https://pw.lacounty.gov/dsg/DisasterRoutes/map/Baldwin%20Park.pdf
Los Angeles Geohub. County of Los Angeles Landslide Zones. August 24, 2022. https://geohub.lacity.org/datasets/306103cb524845368d5ae2923fbdccb3/explore?location=34.05 4059%2C-117.953818%2C12.57
National Ambient Air Quality Standards and California Ambient Air Quality Standards Attainment Status for South Coast Air Basin.
https://www.aqmd.gov/docs/default-source/clean-air-plans/air-quality-management-plans/naaqs- caaqs-feb2016.pdf?sfvrsn=2
South Coast Air Quality Management District.
https://www.aqmd.gov/docs/default-source/default-document-library/map-of-jurisdiction.pdf
United States Department of Agriculture, Natural Resources Conservations Service. Web Soil Survey. https://websoilsurvey.sc.egov.usda.gov/App/WebSoilSurvey.aspx
United States Fish and Wildlife Service. National Wetlands Inventory. Wetlands Mapper. https://www.fws.gov/wetlands/Data/Mapper.html
United States Fish and Wildlife Service. Information for Planning and Consultation. Species Mapper. https://ipac.ecosphere.fws.gov/location/index
City of Santa Ana California Environmental Quality Act
Initial Study/Mitigated Negative Declaration
Appendix A
Mitigation Monitoring and Reporting Plan
City of Baldwin Park California Environmental Quality Act Mitigation Monitoring and Reporting Plan
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AIR-1
Pursuant to Rule 403 of the SCAQMD, the
following dust minimizing measures shall be
implemented:
City of Baldwin Park and its designees
shall comply with all applicable SCAQMD
Rules and Regulations, including Rule
403 ensuring the cleanup of
construction-related dirt on approach
routes to the site. Rule 403 prohibits the
release of fugitive dust emissions from
any active operation, open storage pile
or disturbed surface area visible beyond
the property line of the emission source.
City of Baldwin Park and its designees
shall comply with all SCAQMD
established minimum requirements for
construction activities to reduce fugitive
dust and PM
10 emissions.
Adequate water techniques shall be
employed to mitigate the impact of
construction-related dust particulates.
Portions of the site that are undergoing
surface earth moving operations shall be
dewatered such that a crust will be
formed on the ground surface, and then
watered again at the end of each day.
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Site watering shall be performed as
necessary to mitigate blowing dust.
Grading operations shall be suspended
during first stage ozone episodes or
when winds exceed 25 mph. A high
wind response plan shall be formulated
for enhanced dust control if winds are
forecast to exceed 25 mph in any
upcoming 24-hour period.
Any construction equipment using direct
internal combustion engines shall use a
diesel fuel with a maximum of 0.05
percent sulfur and four-degree retard.
Construction operations affecting
roadways within the project area
including detour routes, shall be
scheduled by implementing traffic hours
and shall minimize obstruction of
through traffic lanes.
The engines of idling trucks or heavy
equipment shall be turned off if the
expected duration of idling exceeds five
minutes.
On-site heavy equipment used during
grading and construction shall be
equipped with diesel particulate filters
unless it is demonstrated that such
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equipment is not available, or its use is
not cost-competitive.
All haul trucks leaving or entering the
site shall be covered or have at least two
feet of freeboard.
Any on-site stockpiles of debris, dirt or
other dusty material shall be covered or
watered twice daily.
Any site access points within 30 minutes
of any visible dirt deposition on any
public right-of-way shall be mechanically
or manually swept.
BIO-1
Prior to ground-disturbing activities in areas that
could support sensitive biological resources, a
habitat assessment shall be conducted by a
qualified biologist to determine the potential for
special-status wildlife species to occur within
affected areas, including areas directly or
indirectly impacted by construction or operation
of the BMPs. If a special-status wildlife species is
found, pre-construction surveys of proposed
work zones should be conducted 14 days prior to
construction. Areas, including construction
areas, staging areas, and right-of-ways, should
be staked, flagged, fenced, or otherwise clearly
delineated to restrict the limits of construction to
the minimum necessary near areas that may
City of Baldwin Park Pre-Construction City of
Baldwin Park
United States Army
Corps of Engineers
United States Fish
and Wildlife Service
California
Department of Fish
and Wildlife
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support special-status wildlife species with
special-status wildlife species; if avoidance is not
possible, the City of Baldwin Park should consult
with the appropriate regulating agency
(USACE/USFWS/CDFW) to determine a strategy
for compliance with the Endangered Species Act,
California Fish and Wildlife Code, or other
regulations supporting special-status species.
The City of Baldwin Park will work together with
those regulating agencies to determine
appropriate impact minimization measures and
compensation for any permanent impacts due to
the Project. If no breeding and nesting birds
and/or raptors are found, then construction may
proceed as scheduled with no additional
monitoring or measured required.
BIO-2
To protect nesting birds that may occur on site
or adjacent to the Project boundary, no
construction shall occur from February 1 through
September 15, as early as January 1 for some
raptors, unless a qualified biologist completes a
survey for nesting bird activity within a 500-foot
radius of the construction site. The nesting bird
surveys shall be conducted at appropriate
nesting times and concentrate on potential
roosting or perch sites. The City of Baldwin Park
should require surveys be conducted by a
qualified biologist no more than 7 days prior to
the beginning of any Project-related activity likely
City of Baldwin Park Pre-Construction City of
Baldwin Park
California
Department of Fish
and Wildlife
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to impact raptors and migratory songbirds, for
the entire project site. If Project activities are
delayed or suspended for more than 7 days
during the breeding season, the surveys shall be
repeated. If nesting raptors and migratory
songbirds are identified, the following minimum
no-disturbance buffers shall be implemented:
300 feet around active passerine (perching birds
and songbirds) nests, 500 feet around active
non-listed raptor nests and 0.5 mile around
active listed bird nests. These buffers shall be
maintained until the breeding season has ended
or until a qualified biologist has determined that
the birds have fledged and are no longer reliant
upon the nest or parental care for survival. Any
sensitive and special status species data
documented by the Project shall be submitted to
the California Natural Diversity Database with all
applicable data fields filled out. The City of
Baldwin Park and/or a designee will notify the
CDFW once submitted.
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BIO-3
The Project shall implement BMPs to prevent
erosion and the discharge of sediment and
pollutants into drainages during Project activities.
BMPs shall be monitored and repaired, if
necessary, to ensure maximum erosion,
sediment, and pollution control. The Project
proponent shall prohibit the use of erosion
control materials potentially harmful to fish and
wildlife species, such as mono-filament netting
(erosion control matting) or similar material. All
fiber rolls, straw wattles, and/or hay bales
utilized within and adjacent to the project site
shall be free of nonnative plant materials. Fiber
rolls or erosion control mesh shall be made of
loose-weave mesh that is not fused at the
intersections of the weave, such as jute, or
coconut (coir) fiber, or other products without
welded weaves.
City of Baldwin Park Construction City of
Baldwin Park N/A
CUL-1
If previously unidentified cultural resources are
unearthed during ground activity, all work shall
immediately be suspended within 100 feet of the
discovery and the City shall be immediately
notified. A qualified archaeologist shall assess
the significance of the find and determine if it is
a California Register of Historic Resource
(CRHR)-eligible archaeological resource and/or
cultural resource. Additionally, a tribal cultural
specialist from a culturally affiliated (TCA) tribe
City of Baldwin Park Construction City of
Baldwin Park
Native American
Heritage
Commission
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shall assess the significance of any Tribal Cultural
Resource under Assembly Bill 52 of the California
Environmental Quality Act (CEQA).
If the qualified archaeologist determines that
adverse impacts to significant archaeological
resources could occur during the Project, then
the resources shall be avoided from direct
Project impacts by Project redesign, if feasible.
If the resource cannot be avoided, then an
archaeological treatment plan shall be developed
and implemented with input from a tribal cultural
specialist from a TCA tribe. The qualified
archaeologist should remain on-site for the
remainder of excavation activities, or until the
archaeologist determines that the site will not
impact any archaeological or cultural resources.
During daily monitoring activities, the
archaeologist shall complete monitoring logs,
which will provide descriptions of daily activities,
including construction activities, project location,
soils, and any cultural materials identified.
If the qualitied archaeologist determines that the
discovery is not significant as an archeological
resource due to its lack or provenience or
otherwise fails to “add to our understanding of
the prehistory of the area” and the find is still
considered significant as a TCR, then the TCA
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tribe can determine the best treatment of the
find. This could include reburial (curated onsite),
curation at the TCA tribe’s museum, or other
treatment as deemed appropriate by the TCA
tribe.
CUL-2
If previously unidentified cultural resources
and/or tribal cultural resources are unearthed
during ground activity, all work shall immediately
be suspended within 100 feet of the discovery
and the City shall be immediately notified. A
qualified archaeologist and a Native American
monitor shall assess the significance of the find
and determine if it is a California Register of
Historic Resource (CRHR)-eligible archaeological
resource and/or tribal cultural resource. If the
qualified archaeologist determines that adverse
impacts to tribal cultural resources or significant
archaeological resources could occur during the
Project, then the resources shall be avoided from
direct Project impacts by Project redesign, if
feasible. If the resource cannot be avoided, then
an archaeological treatment plan shall be
developed and implemented.
City of Baldwin Park Construction City of
Baldwin Park
Native American
Heritage
Commission
CUL-3
In compliance with Section 5097.98 of the Public
Resources Code and Section 7050.5 of the
California Health and Safety Code, if human
remains are encountered, all ground disturbing
activities shall be immediately suspended within
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Baldwin Park
Native American
Heritage
Commission
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100 feet of the discovery, and the Los Angeles
County Coroner shall be notified immediately. If
the Coroner determines the remains are Native
American in origin, they must notify the NAHC
within 24 hours of such identification so that the
NAHC can contact the Most Likely Descendant
(MLD). The MLD shall be provided access to the
discovery and will provide recommendations for
treatment of the remains within 48 hours of
accessing the discovery site. Disposition of
human remains and any associated grave goods,
if encountered, shall be treated in accordance
with procedures and requirements set forth in
Sections 5097.94 and 5097.98 of the Public
Resources Code; Section 7050.5 of the California
Health and Safety Code and CEQA Guidelines
Section 15064.5.
Los Angeles County
Coroner
CUL-4
If it can be demonstrated that a project will
cause damage to a unique archaeological
resource, the lead agency may require
reasonable efforts to be made to permit any or
all of these resources to be preserved in place or
left in an undisturbed state. Preservation in
place is the preferred manner of mitigating
impacts to archaeological sites. Preservation in
place maintains the relationship between
artifacts and the archaeological context.
Preservation may also avoid conflict with
City of Baldwin Park Construction City of
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Native American
Heritage
Commission
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religious or cultural values of groups associated
with the site. Examples of that treatment, in no
order of preference, may include, but are not
limited to, any of the following: planning
construction to avoid archaeological sites,
deeding archaeological sites into permanent
conservation easements, capping or covering
archaeological sites with a layer of soil before
building on the sites, and planning parks,
greenspace, or other open space to incorporate
archaeological sites.
NOISE-1
The City of Baldwin Park and their designees
shall implement the following measures during
construction as needed:
Include design measures necessary to
reduce the construction noise levels
where feasible. These measures may
include noise barriers, curtains, or
shields.
Place noise-generating construction
activities (e.g., operation of compressors
and generators, cement mixing, general
truck idling) as far as possible from the
nearest noise-sensitive land uses.
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Locate stationary construction noise
sources as far from adjacent noise-
sensitive receptors as possible.
Identify a liaison for off-site sensitive
receptors, such as residents and
property owners, to contact with
concerns regarding construction noise
and vibration. The liaison’s telephone
number(s) shall be prominently displayed
at construction locations.
Notify, in writing, all landowners,
occupants of properties adjacent to the
construction area, and nearby sensitive
receptors of the anticipated construction
schedule at least 2 weeks prior to
groundbreaking.
Prepare visible signs indicating “Noise
Control Zone.”
Use noise-control devices that meet
original specifications and performance.
To the extent practical, use electrically-
powered equipment.
Implement temporary noise barriers and
sound-control curtains where project
activity is unavoidably close to noise-
sensitive receivers. In particular, noise
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barriers of 8 feet and 12 feet tall should
be established around work sites to
remove noise impacts from the different
construction operation areas. The
construction contractor should regularly
evaluate the noise level at nearby
sensitive receptors to ensure noise levels
are not in exceedance. If so, the
following noise barrier measures should
also be incorporated:
Break line of sight from noise source
to receiver
Use a frame to secure an
appropriate acoustic blanket or
paneling
Use a solid material with a minimum
surface density of 3 lb/ft
2 or mass-
loaded acoustic blankets with at
least STC 25
Overlap or seal any gaps in the
barriers
Designate haul routes to be used based
on the least overall noise impact route,
with heavily-loaded trucks away from
residential streets, if possible. Identify
haul routes streets with the fewest noise
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sensitive receivers if no alternatives are
available.
Place earth-moving equipment, fixed
noise-generating equipment, stockpiles,
staging areas, and other noise-producing
operations as far as practicable from
noise-sensitive receivers.
Eliminate the use of horns, whistles,
alarms, and bells.
Phase demolition, earth moving, and
ground impacting operations so they do
not occur in the same time period.
In the case of nighttime construction,
the contractor shall comply with the
provisions of the nighttime noise
variance issued by the City.
Conduct periodic noise measurements in
accordance with an approved noise
monitoring plan, specifying monitoring
locations, equipment, procedures, and
schedule of measurements and reporting
methods to be used.
NOISE-2
All construction activities that employ
mechanized stationary equipment that generate
noise levels shall comply with the applicable
noise standards established by the City of
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Baldwin Park. The equipment shall be designed
with noise-attenuating features (e.g., enclosures)
and/or located at areas (e.g., belowground)
where nearby noise-sensitive land uses would
not be exposed to a perceptible noise increase in
their noise environment.
NOISE-3
To prevent impacts from vibrations, large
vibration producing equipment should be placed
as far as is feasible from sensitive receptors.
Furthermore, the City of Baldwin Park and their
designees should implement the following
measures as needed:
Pre-construction Survey - A before and
after survey should include inspecting
building foundations and taking
photographs (or installing crack
monitors) of pre-existing conditions,
cracks, or other flaws. The survey can
be limited to buildings closest to the pile
driving activities, except for the case of
unusually fragile or historic structures
that are located within approximately
200 feet of construction.
Sonic Pile Driving - At the upper range
reference vibration for the
sonic/vibratory pile driver, the risk for
damage to nearby buildings begins when
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Baldwin Park N/A
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the equipment is 32 feet or closer to the
structure. The nearest piling is expected
to be 20 feet from the closest structure,
so vibration limit exceedances would
remain with use of a vibratory pile driver.
Drilled Piles - Noise emission levels from
bored/drilled pilling methods are
approximately 15 dB lower and peak
particle velocity (PPV) levels may be
more than 15 times lower than those
due to traditional impact piling. The use
of these methods will eliminate the
vibration impacts of all receivers. These
methods will also substantially reduce
the noise impacts and in most cases they
will also be eliminated, with the use of a
suitable noise barrier.
Hammer Energy - A recommended way
to reduce PPV is to lower the hammer
energy since there is a direct relationship
between hammer energy and the
resultant ground vibration. Ground PPV
generally follows a square root
relationship with hammer energy (i.e.
PPV ~ √Hammer Energy). The degree
of hammer energy reduction must be
balanced against the likelihood/severity
of expected exceedances, increase in
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total driving time, and ability to drive to
required friction tolerances.
Vibration Monitoring - It is recommended
that vibration monitoring be conducted
at any building where equipment is
operating closer than the limits noted in
Table 3-6.
PS-1
The City shall provide reasonable advance
notification to service providers such as fire,
police, and emergency medical services as well
as to local businesses, homeowners, and other
residents adjacent to and within areas potentially
affected by the proposed Project about the
nature, extent, and duration of construction
activities. Interim updates should be provided to
inform the public of the status of the
construction activities.
City of Baldwin Park Construction City of
Baldwin Park N/A
PS-2
The City shall provide advance notice (at least
10-days prior) to emergency (fire, police,
medical) services for any lane or street closures
that may impact traffic circulation during
construction.
City of Baldwin Park Construction City of
Baldwin Park N/A
TRAF-1
The Contractor will notify local Police and Fire
Departments in its intent to for lane closure at
least ten (10) days before Work is to begin. The
Contractor shall cooperate with local authorities
relative to handling traffic through the area.
City of Baldwin Park Construction City of
Baldwin Park N/A
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TRAF-2
Transportation of heavy construction equipment
and/or materials which require use of oversized-
transport vehicles on State highways will need a
Caltrans transportation permit. The project
specifications will limit construction traffic to off-
peak periods to minimize the potential impact on
State facilities. If construction traffic is expected
to cause delays on any State facilities, a
construction traffic control plan detailing these
delays shall be submitted for Caltrans’ review.
City of Baldwin Park Construction City of
Baldwin Park
California
Department of
Transportation
TCR-1
Retain a Native American Monitor 30 Days Prior
to Commencement of Ground-Disturbing
Activities.
The City of Baldwin Park shall retain a
Native American Monitor. 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,
City of Baldwin Park Construction City of
Baldwin Park
Gabrieleño Band of
Mission Indians –
Kizh Nation
Native American
Heritage
Commission
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tree removal, boring, grading,
excavation, drilling, and trenching.
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 City of Baldwin Park
upon written request to the Tribe.
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 until the discovered
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TCR has been fully assessed by the
Native American Monitor or qualified
archaeologist. The Native American
Monitor or qualified archaeologist 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-2
Unanticipated Discovery of Human Remains and
Associated Funerary Objects
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 discovered or
recognized on the project site, then all
construction activities shall immediately
cease. Health and Safety Code Section
City of Baldwin Park Construction City of
Baldwin Park
Gabrieleño Band of
Mission Indians –
Kizh Nation
Native American
Heritage
Commission
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7050.5 dictates that any discoveries of
human skeletal material shall be
immediately reported to the County
Coroner and all ground-disturbing
activities shall immediately halt and shall
remain halted until the coroner has
determined the nature of the remains. If
the coroner recognizes the human
remains to be those of a Native
American or has reason to believe they
are Native American, he or she shall
contact, by telephone within 24 hours,
the Native American Heritage
Commission, and Public Resources Code
Section 5097.98 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).
Construction activities may resume in
other parts of the project site at a
minimum of 200 feet away from
discovered human remains and/or burial
goods, if the monitor determines in its
sole discretion that resuming
construction activities at that distance is
acceptable and provides the project
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manager express consent of that
determination (along with any other
mitigation measures the Native American
monitor and/or archaeologist deems
necessary). (CEQA Guidelines Section
15064.5(f).)
Preservation in place (i.e., avoidance) is
the preferred manner of treatment for
discovered human remains and/or burial
goods. Any historic archaeological
material that is not Native American in
origin (non-TCR) shall be curated at a
public, non-profit institution with a
research interest in the materials, if such
an institution agrees to accept the
material. If no institution accepts the
archaeological material, it shall be
offered to a local school or historical
society in the area for educational
purposes.
Any discovery of human remains/burial
goods shall be kept confidential to
prevent further disturbance.
TCR-3
Procedures for Burials and Funerary Remains
The Burial Policy of the MLD shall be
implemented. “Human remains”
City of Baldwin Park Construction City of
Baldwin Park
Gabrieleño Band of
Mission Indians –
Kizh Nation
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encompasses more than human bones.
In ancient as well as historic times,
Tribal Traditions included, but were not
limited to, the preparation of the soil for
burial, the burial of funerary objects with
the deceased, and the ceremonial
burning of human remains.
If the discovery of human remains
includes four or more burials, the
discovery location shall be treated as a
cemetery and a separate treatment plan
shall be created.
The prepared soil and cremation soils are
to be treated in the same manner as
bone fragments that remain intact.
Associated funerary objects are objects
that, as part of the death rite or
ceremony of a culture, are reasonably
believed to have been placed with
individual human remains either at the
time of death or later; other items made
exclusively for burial purposes or to
contain human remains can also be
considered as associated funerary
objects. Cremations will either be
removed in bulk or by means as
Native American
Heritage
Commission
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necessary to ensure complete recovery
of all sacred materials.
In the case where discovered human
remains cannot be fully documented and
recovered on the same day, the remains
will be covered with muslin cloth and a
steel plate that can be moved by heavy
equipment placed over the excavation
opening to protect the remains. If this
type of steel plate is not available, a 24-
hour guard should be posted outside of
working hours. The Tribe will make
every effort to recommend diverting the
project and keeping the remains in situ
and protected. If the project cannot be
diverted, it may be determined that
burials will be removed.
In the event preservation in place is not
possible despite good faith efforts by the
project applicant/developer and/or
landowner, before ground-disturbing
activities may resume on the project site,
the landowner shall arrange a
designated site location within the
footprint of the project for the respectful
reburial of the human remains and/or
ceremonial objects.
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Each occurrence of human remains and
associated funerary objects will be stored
using opaque cloth bags. All human
remains, funerary objects, sacred objects
and objects of cultural patrimony will be
removed to a secure container on site if
possible. These items should be
retained and reburied within six months
of recovery. The site of
reburial/repatriation shall be on the
project site but at a location agreed
upon between the Tribe and the
landowner at a site to be protected in
perpetuity. There shall be no publicity
regarding any cultural materials
recovered.
The Tribe will work closely with the project’s
qualified archaeologist to ensure that the
excavation is treated carefully, ethically and
respectfully. If data recovery is approved by the
Tribe, documentation shall be prepared and shall
include (at a minimum) detailed descriptive notes
and sketches. All data recovery data recovery-
related forms of documentation shall be
approved in advance by the Tribe. If any data
recovery is performed, once complete, a final
report shall be submitted to the Tribe and the
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NAHC. The Tribe does NOT authorize any
scientific study or the utilization of any invasive
and/or destructive diagnostics on human
remains.