Daly City City Council
April 24, 2023

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City of Daly City January 2023

4.10.2 Impact Discussion
Potentially
Significant
Impact
Less than
Significant
with Mitigation
Incorporated
Less than
Significant
Impact
No Impact
Would the project:
1) Violate any water quality standards or waste
discharge requirements or otherwise
substantially degrade surface or ground water
quality?
2) Substantially decrease groundwater supplies or
interfere substantially with groundwater
recharge such that the project may impede
sustainable groundwater management of the
basin?
3) Substantially alter the existing drainage pattern
of the site or area, including through the
alteration of the course of a stream or river or
through the addition of impervious surfaces, in
a manner which would:
- result in substantial erosion or siltation onor off-site; - substantially increase the rate or amount
of surface runoff in a manner which would
result in flooding on- or off-site;
- 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
- impede or redirect flood flows?
4) In flood hazard, tsunami, or seiche zones, risk
release of pollutants due to project inundation?
5) Conflict with or obstruct implementation of a
water quality control plan or sustainable
groundwater management plan?
Impact HYD-1: The project would not violate any water quality standards or waste discharge requirements or otherwise substantially degrade surface or ground water quality. (Less than Significant Impact)
Construction Water Quality Impacts
Potential impacts related to water quality are constrained by existing regulatory systems from the federal to the local level. The Clean Water Act sets minimum water quality standards for all surface waters in the U.S. and requires that industrial, municipal, and construction-related sources of pollution are regulated through the NPDES. The City requires project applicants to submit a

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stormwater management plan that illustrates full compliance with the MRP. The project would be required to include stormwater controls and construction best management practices. Compliance with the MRP would ensure that project construction would not substantially degrade surface water or ground water quality. (Less than Significant Impact) Post-Construction Water Quality Impacts
The proposed project would result in approximately 15,850 square feet (51 percent) of impervious surface area and 15,290 square feet (49 percent) of pervious surface area on the site. Overall, the project would result in a net increase of 14,150 square feet of impervious surface area. Pervious surface area provided by the project would include pervious concrete for the driveway, landscaping areas, and bioretention areas. The drainage system on-site would connect to the existing 12-inch stormwater line in 3rd Avenue. With the implementation of stormwater treatment measures, the project would result in a less than significant impact to water quality. (Less than Significant Impact)
Impact HYD-2: The project would not substantially decrease groundwater supplies or interfere substantially with groundwater recharge such that the project may impede sustainable groundwater management of the basin. (Less than Significant Impact)
Daly City receives a large portion of its water supply from the San Francisco Public Utilities Commission (SFPUC) and supplements the SFPUC supply with groundwater pumped from six local wells. During dry periods, groundwater makes up a larger proportion (up to 45 percent) of the City’s supply. The proposed project, consisting of 14 townhomes, would not result in the need for excessive groundwater pumping from the local wells, and would therefore not substantially decrease groundwater supplies (refer to water supply discussion in Section 4.19 Utilities and Service Systems). There is a buried existing well on-site that was likely associated with irrigation of the greenhouses previously existing on-site. The project proposes to abandon and/or destroy the well in conformance with the County of San Mateo and RWQCB requirements. The existing well is currently inoperable and does not supply groundwater to any existing land uses. Thus, abandonment/destruction of the well would not decrease groundwater supplies or interfere with groundwater management.

There are no designated groundwater recharge areas within the Westside Groundwater Basin. The principal sources of recharge are direct infiltration of rainfall, infiltration of irrigation water, and leakage from water and sewer pipes.40 As described in Impact HYD-1, the proposed project would reduce the pervious area on-site, resulting in a corresponding decrease in infiltration capacity.

However, the project’s Stormwater Management Plan shows numerous self-retaining, self-treating, bioretention areas within the landscaping that would provide opportunities for stormwater infiltration. The project would therefore not be expected to substantially interfere with groundwater recharge or impede groundwater management of the basin. (Less Than Significant Impact) 40 San Francisco Bay Hydrologic Region Westside Groundwater Basin, California’s Groundwater Bulletin 118, January 20, 2006.

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Impact HYD-3: The project would not substantially alter the existing drainage pattern of the site or area, including through the alteration of the course of a stream or river or through the addition of impervious surfaces, in a manner which would result in substantial erosion or siltation on- or off-site; substantially increase the rate or amount of surface runoff in a manner which would result in flooding on- or off-site; 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 impede or redirect flood flows. (Less than Significant Impact)
The project site does not contain, nor is it adjacent to, any waterway. Therefore, the proposed project would not alter the course of a stream or river. Construction on the site will comply with the City’s stormwater regulations (Chapters 14.04 and 15.62 of the City’s Municipal Code) to ensure construction activities on the site do not result in increased soil erosion and siltation, exceed capacity of the drainage system, or add substantial sources of polluted runoff. Consistent with the City’s requirements, the project would not increase site runoff from a 10-year storm for a duration of two hours of rainfall and will retain any increased flow due to reduction in pervious surfaces. (Less Than Significant Impact)
Impact HYD-4: The project would not risk release of pollutants due to project inundation in flood hazard, tsunami, or seiche zones. (No Impact)
As described in Section 4.10.1.2 Existing Conditions, the project site is not located within a 100-year floodplain nor is it subject to tsunamis or seiches. (No Impact) Impact HYD-5: The project would not conflict with or obstruct implementation of a water quality control plan or sustainable groundwater management plan. (Less than Significant Impact)
As previously described, the project site is located within the Westside Groundwater Basin. There are existing groundwater management plans for the northwestern portion (North Westside Groundwater Basin Management Plan) and the southern portion (South Westside Basin Groundwater Management Plan) of the Basin. The City of Daly City, which would be the water service provider for the project, is a participant in the South Westside Basin Groundwater Management Plan. The City would implement the groundwater protection and management goals and objectives of the Plan. The project, which proposes to construct 14 new townhomes, would not conflict with or obstruct the implementation of the Plan. (Less Than Significant Impact)

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LAND USE AND PLANNING

4.11.1 Environmental Setting
Regulatory Framework
Local
Comprehensive Airport Land Use Compatibility Plan for the Environs of San Francisco International Airport
In 1967, the State legislature adopted legislation requiring the establishment of airport land use commissions in counties with one or more airports serving the general public. Amendments adopted by the legislature in 1970 required each commission to develop comprehensive ALUCPs. The purpose of the ALUCPs is to provide for the orderly growth of airports and the surrounding areas to minimize the public’s exposure to excessive noise and safety hazards.

The project site is located within the AIA of SFO. Properties within the AIA may be subject to some of the annoyances or inconveniences associated with proximity to airport operations (e.g., noise, vibration, and odors). The airport/land use compatibility of a proposed development or land use policy action shall be determined by comparing the proposed development or land use policy action with the safety compatibility criteria, noise compatibility criteria, and airspace protection/height limitation criteria in the ALUCP.

Furthermore, properties located within the 70 dB CNEL aircraft noise contour for SFO warrant land use controls to promote noise compatibility. The project site is not located within SFO’s 70 dB CNEL aircraft noise contour.

The ALUCP also includes airspace protection/height limitation criteria based on Federal Avigation Regulations. Federal Aviation Regulations, Part 77, “Objects Affecting Navigable Airspace” (referred to as FAR Part 77) sets forth standards and review requirements for protecting the airspace for safe aircraft operation, particularly by restricting the height of potential structures and minimizing other potential hazards (such as reflective surfaces, flashing lights, and electronic interference) to aircraft in flight. These regulations require that the FAA be notified of certain proposed construction projects located within an extended zone defined by an imaginary slope radiating outward for several miles from an airport’s runways, or which would otherwise stand at least 200 feet in height above ground. For the project site, any proposed structure of a height greater than approximately 200 feet above mean ground level is required under FAR Part 77 to be submitted to the FAA for review.

Any proposed land use policy actions, including the proposed General Plan Amendment and rezoning, that affect properties within the ALUCP Airport Influence Area B boundary in Daly City (such as the project site), must be referred to the C/CAG Board for an ALUCP consistency review and determination.

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Daly City 2030 General Plan
The General Plan includes policies for the purpose of avoiding or mitigating impacts resulting from development projects within the City. The following policies are specific to land use and planning and are applicable to the proposed project.

Policy/Task Description
Task CE-20.7 As a part of all new development, require, where appropriate, the provision of pedestrian-oriented signs, pedestrian-scale lighting, benches, and other street furniture so as to make non-motorized forms of travel comfortable and attractive alternatives to the automobile. Where necessary in new development, the City may require additional sidewalk and/or right-of-way width to accommodate these amenities.

Policy RME20 Recognize the physical differences between different parts of the City and regulate land uses within these areas accordingly.

Task RME20.2 Amend the Zoning Ordinance to provide development regulations that more closely reflect the predominant neighborhood character established when the neighborhood was constructed.

Task RME20.4 Incorporate design features in new development that reflects the character of the neighborhood, to ensure that new construction is compatible with existing development.

Policy LU-8 Ensure that landscape and hardscape improvements made to all residential properties are environmentally sound and do not negatively impact existing neighborhood aesthetics.

City of Daly City Zoning Ordinance
The Zoning Ordinance is provided in Title 17 of the Daly City Municipal Code. The Zoning Ordinance helps promote public health, safety, morals, convenience, comfort, prosperity and general welfare of residents in the City.

The project site is zoned I-D, Interim District. All territory annexed to the City are automatically zoned to an interim district until such time as the territory is zoned to another district.41 Existing Conditions
The project site has a General Plan land use designation of Residential – Low Density (R-LD). This land applies generally to those areas which were subdivided after January 1949, which have single family residences located on parcels of 3,000 square feet or more. The project site is immediately surrounded by residential land uses. A commercial development that fronts on E. Market Street is located approximately 117 feet south of the site.
41 City of Daly City. Municipal Code Chapter 17.30.

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4.11.2 Impact Discussion
Potentially
Significant
Impact
Less than
Significant with
Mitigation
Incorporated
Less than
Significant
Impact
No Impact
Would the project:
1) Physically divide an established community?
2) 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?
Impact LU-1: The project would not physically divide an established community. (Less than Significant Impact)
Examples of projects that have the potential to physically divide an established community include new freeways and highways, major arterial streets, and railroad lines. The project would construct 14 new townhomes in a residential neighborhood, on a lot that is surrounded by existing one- to two-story residences. Development of the project site would be consistent with the surrounding area. In addition, the project would not result in the construction of dividing infrastructure such as highways, expressways, or major arterial streets. For these reasons, the proposed project would not physically divide an established community (Less than Significant Impact)
Impact LU-2: The project would not 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. (Less than Significant Impact)
General Plan and Zoning
In order to develop the project site with the proposed residences, the project would require an amended land use designation and change in zoning to Residential – Medium Density (R-MD) and R-3 Multiple-Family Residential, respectively. The R-LD designation allows between two and 14.5 DU/acre and the R-MD designation allows between 20.1 and 35 DU/acre. Thus, amending the designation of the 0.71-acre project site would increase the maximum allowable dwelling units onsite from ten to 24 units. The 14 proposed townhomes would be consistent with the R-MD designation.

As previously noted, the project site is currently zoned I-D, Interim District. This zoning is given as a placeholder for territories annexed by the City. The project would rezone the site to R-3. The proposed townhomes would not require a use permit under the R-3 zoning and would be consistent with the requirements of the zoning district, as shown below in Table 4.11-1.

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Table 4.11-1: R-3 Zoning Requirements
Maximum Height
(feet)
Maximum Lot
Coverage
Minimum Front
Setback (feet)
Minimum Rear
Setback (feet)
Allowable 36 75% 15 10
Proposed 35 37.2% 15 10
SFO Airport Land Use Compatibility Plan
The project site is located within the SFO AIA and thus, the project would be required to comply with the SFO ALUCP. For the project site, any structure exceeding 200 feet in height above ground would require submittal to the FAA for airspace safety review. The proposed residences would reach a maximum of 35 feet above ground level, therefore, notification to the FAA would not be required.

Given that the project proposes a General Plan amendment and rezoning and is located within the ALUCP Area B boundary, the project has been referred to the C/CAG Board for an ALUCP consistency review and determination. The project was determined by the C/CAG Board to be consistent with the ALUCP.42 The project site is outside of the 70 dB CNEL aircraft noise contour and therefore does not require controls to promote noise compatibility.

The project would be consistent with the proposed General Plan Land Use designation and zoning district, as well as the SFO ALUCP. Therefore, the project would not 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. (Less than Significant Impact) 42 C/CAG Board of Directors. Resolution 22-107. December 8, 2022.

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MINERAL RESOURCES

4.12.1 Environmental Setting
Regulatory Framework
State
Surface Mining and Reclamation Act
The Surface Mining and Reclamation Act (SMARA) was enacted by the California legislature in 1975 to address the need for a continuing supply of mineral resources, and to prevent or minimize the negative impacts of surface mining to public health, property, and the environment. As mandated under SMARA, the State Geologist has designated mineral land classifications in order to help identify and protect mineral resources in areas within the state subject to urban expansion or other irreversible land uses which would preclude mineral extraction. SMARA also allowed the State Mining and Geology Board (SMGB), after receiving classification information from the State Geologist, to designate lands containing mineral deposits of regional or statewide significance.

Existing Conditions
The San Mateo County General Plan identifies 13 mineral resources found in San Mateo County.

Seven of these minerals: chromite, clay, expansible shale, mercury, sand and gravel, sands (specialty), and stone (dimension), are not likely to be used primarily because of limited quantities, urbanization or economic infeasibility. Daly City does not contain any mineral resources within its limits.

4.12.2 Impact Discussion
Potentially
Significant
Impact
Less than
Significant
with Mitigation
Incorporated
Less than
Significant
Impact
No Impact
Would the project:
1) 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?
2) 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?
Impact MIN-1: The project would not result in the loss of availability of a known mineral resource that would be of value to the region and residents of the state. (No Impact)
Due to the fact that the project site is located on urban land in the City of Daly City, there are no significant mineral resources on or in the vicinity of the project site. (No Impact)

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Impact MIN-2: The project would not result in the loss of availability of a locally important mineral resource recovery site delineated on a local general plan, specific plan, or other land use plan. (No Impact)
Please see the discussion for MIN-1, above. (No Impact)

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NOISE

4.13.1 Environmental Setting
Background Information
Noise
Factors that influence sound as it is perceived by the human ear, include the actual level of sound, period of exposure, frequencies involved, and fluctuation in the noise level during exposure. Noise is measured on a decibel scale, which serves as an index of loudness. The zero on the decibel scale is based on the lowest sound level that the healthy, unimpaired human ear can detect. Each 10 decibel increase in sound level is perceived as approximately a doubling of loudness. Because the human ear cannot hear all pitches or frequencies, sound levels are frequently adjusted or weighted to correspond to human hearing. This adjusted unit is known as the A-weighted decibel, or dBA.

Since excessive noise levels can adversely affect human activities and human health, federal, state, and local governmental agencies have set forth criteria or planning goals to minimize or avoid these effects. Noise guidelines are generally expressed using one of several noise averaging methods, including Leq, DNL, or CNEL.43 These descriptors are used to measure a location’s overall noise exposure, given that there are times when noise levels are higher (e.g., when a jet is taking off from an airport or when a leaf blower is operating) and times when noise levels are lower (e.g., during lulls in traffic flows on freeways or in the middle of the night). Lmax is the maximum A-weighted noise level during a measurement period.

Vibration
Ground vibration consists of rapidly fluctuating motions or waves with an average motion of zero.

Vibration amplitude can be quantified using Peak Particle Velocity (PPV), which is defined as the maximum instantaneous positive or negative peak of the vibration wave. PPV has been routinely used to measure and assess groundborne construction vibration. Studies have shown that the threshold of perception for average persons is in the range of 0.008 to 0.012 inches/second (in/sec) PPV.

Regulatory Framework
Federal
Federal Transit Administration Vibration Limits
The Federal Transit Administration (FTA) has developed vibration impact assessment criteria for evaluating vibration impacts associated with transit projects. The FTA has proposed vibration impact criteria based on maximum overall levels for a single event. The impact criteria for groundborne 43 Leq is a measurement of average energy level intensity of noise over a given period of time. Day-Night Level (DNL) is a 24-hour average of noise levels, with a 10 dB penalty applied to noise occurring between 10:00 PM and 7:00 AM. Community Noise Equivalent Level (CNEL) includes an additional five dB applied to noise occurring between 7:00 PM and 10:00 PM. Where traffic noise predominates, the CNEL and DNL are typically within two dBA of the peak-hour Leq.

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vibration are shown in Table 4.13-1 below. These criteria can be applied to development projects in jurisdictions that lack vibration impact standards.

Table 4.13-1: Groundborne Vibration Impact Criteria
Land Use Category
Groundborne Vibration Impact Levels
(VdB inch/sec)
Frequent
Event
Occasional
Events
Infrequent
Events
Category 1: Buildings where vibration would interfere
with interior operations 65 65 65
Category 2: Residences and buildings where people
normally sleep 72 75 80
Category 3: Institutional land uses with primarily
daytime use 75 78 83
Source: Federal Transit Administration. Transit Noise and Vibration Assessment Manual. September 2018.

State
California Building Standards Code
The CBC establishes uniform minimum noise insulation performance standards to protect persons within new buildings housing people, including hotels, motels, dormitories, multi-family residential units, apartments, and dwellings other than single-family residences. Title 24 mandates that interior noise levels attributable to exterior sources not exceed 45 Ldn/CNEL in any habitable room. Exterior windows must have a minimum Sound Transmission Class (STC) of 40 or Outdoor-Indoor Transmission Class (OITC) of 30 when the property falls within the 65 dBA DNL noise contour for a freeway or expressway, railroad, or industrial source.

Local
Comprehensive Airport Land Use Compatibility Plan for the Environs of the San Francisco International Airport
As discussed in more detail in Section 4.10 Land Use, the project site is located within the AIA of SFO. Properties within the AIA may be subject to some of the annoyances or inconveniences associated with proximity to airport operations (e.g., noise, vibration, and odors). The airport/land use compatibility of a proposed development or land use policy action shall be determined by comparing the proposed development or land use policy action with the safety compatibility criteria, noise compatibility criteria, and airspace protection/height limitation criteria in the ALUCP. The site is located outside of the SFO 70 dB CNEL noise contour.

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Daly City 2030 General Plan
The General Plan includes policies for the purpose of avoiding or mitigating impacts resulting from development projects within the City. The following policies are specific to noise and are applicable to the proposed project.

Policy/Task Description
Policy NE-1 Use the future noise contour map to identify existing and potential noise impact areas.

Policy NE-3 Maintain a CNEL level of not more than 70 dBA Leq in residential areas.

Task NE-2.1 Use the Noise Control Guidelines to assess the suitability of a site for new development in combination with the noise contours to accurately identify areas that may need additional noise study and mitigation. Noise mitigations include additional insulation, double glazing of windows and increasing building setbacks from the noise source. Mitigations should also be creative and attractive whenever possible and appropriate. Creative noise mitigation measures can include incorporation of fountains using water to mask freeway noise and noise walls of an appropriate scale painted with decorative murals.

Task NE-3.1 Continue to enforce the environmental noise requirements of the State Building Code (Title 24).

Task NE-5.1 Additional noise studies should be conducted in “Conditionally Acceptable” noise environments to ensure adequate mitigation features are employed. Usually conventional construction with closed windows and fresh air supply systems will maintain a healthy noise environment.

Task HE-4.2 For all development proposals with the 65dB CNEL noise contour, the City shall require a noise study that identifies the proposed project’s compliance with requirement of Task 4.1. If the project qualifies for review under CEQA, the City shall incorporate the noise study and any mitigation measures into the CEQA document and shall adopt findings that the project, as conditioned, complies with the interior noise level requirement.

Task NE-9.1 Depending upon the hours of operation, intensity of use, and the location of sensitive receptors in the area, the expansion or change of use could cause noise impacts.

Acoustical studies should be performed, at the applicant's expense, during the discretionary and environmental review processes and conditions should be placed on the project accordingly
Task NE-11.3 Require all future development within the Airport Influence Area B boundary for San Francisco International Airport to conform to the relevant height/airspace protection, aircraft noise, and safety policies and land use compatibility criteria contained within the most recent adopted version of the ALUCP for the environs of San Francisco International Airport.

Existing Conditions
The project site is bounded by 3rd Avenue to the west and residential uses to the north, east, and south. The noise environment on the project site primarily results from vehicular traffic along 3rd Avenue and the surrounding roadway network and aircraft departures from SFO. According to the

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General Plan EIR, the existing roadway noise ranges between 65 to 70 dBA on 3rd Avenue and 65 to 70 dBA on Hillside Boulevard and E. Market Street. Based on the General Plan noise contours, noise levels on the project site are between 60 to 65 dBA. The project site is not within the 65 CNEL noise contour for SFO.

4.13.2 Impact Discussion
Potentially
Significant
Impact
Less than
Significant
with Mitigation
Incorporated
Less than
Significant
Impact
No Impact
Would the project result in:
1) 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?
2) Generation of excessive groundborne vibration
or groundborne noise levels?
3) 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?
Impact NOI-1: The project would not result in generation of a substantial temporary or permanent increase in ambient noise levels in the vicinity of the project in excess of standards established in the local general plan or noise ordinance, or applicable standards of other agencies. (Less than Significant Impact with Mitigation Incorporated)
Permanent Noise Impacts
The project would add approximately 92 total average daily vehicle trips to surrounding roadways.

For a project to result in a noticeable change in roadway noise, i.e., 3 dBA increase, roadway volumes would have to double with the addition of project trips. Primary access to the site is provided by 3rd Avenue which serves an existing residential neighborhood with more than double the number of units proposed by the project. The project would not double the number of vehicle trips on 3rd Avenue, a primarily residential street, therefore, the project would not result in a noticeable change in roadway noise. The proposed townhomes would generate noise levels compatible with the surrounding residential uses. The project would not result in a significant permanent ambient noise level increase. (Less than Significant Impact)

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Temporary Noise Impacts
The construction schedule assumes that the project would be built out over a period of approximately nine months. The project would be constructed in various phases involving demolition, site preparation, grading, foundation, building construction, paving, and building interior/ architectural coating. Construction noise levels would fluctuate across the site based on the type of construction activity occurring with the site demolition, grading, and foundation phases being the noisiest periods of construction. Project construction would include several days of overlap when multiple phases are being carried out simultaneously. The project does not include construction activities that would generate substantial loud noise such as pile driving or demolition of a large building.

Impact NOI-1: Project implementation would result in intermittent short-term noise impacts resulting from construction-related activities.

Mitigation Measures: In accordance with the City’s General Plan and Municipal Code, construction activities would be completed with incorporation of the following BMPs to further reduce potential temporary construction noise impacts:

MM NOI-1.1: The applicant shall incorporate the following practices into the construction documents to be implemented by the project contractor:
1) Construction activities shall be limited to the hours between 8:00 am and 5:00 pm, Monday through Friday, and prohibited on weekends and holidays in accordance with the City’s General Plan, unless permission is granted with a development permit or other planning approval.
2) Equip all internal combustion engine-driven equipment with intake and exhaust mufflers that are in good condition and appropriate for the equipment.
3) Unnecessary idling of internal combustion engines should be strictly prohibited.
4) Locate stationary noise-generating equipment, such as air compressors or portable power generators, as far as possible from nearby receptors. If they must be located near receptors, adequate muffling (with enclosures where feasible and appropriate) shall be used reduce noise levels at nearby receptors. Any enclosure openings or venting shall face away from receptors. 5) Utilize "quiet" air compressors and other stationary noise sources where technology exists.
6) A temporary noise control blanket barrier could be erected, if necessary, along building facades facing construction sites. This measure would only be necessary if conflicts occurred which were irresolvable by proper scheduling.

Noise control blanket barriers can be rented and quickly erected. 7) Control noise from construction workers’ radios to a point where they are not audible at existing structures bordering the project site. 8) The contractor shall prepare a detailed construction plan identifying the schedule for major noise-generating construction activities. The construction plan shall identify a procedure for coordination with adjacent land uses so that construction activities can be scheduled to minimize noise disturbance.

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9) Neighbors located adjacent to the construction site shall be notified of the construction schedule in writing.
10) Designate a “disturbance coordinator” who would be responsible for responding to any complaints about construction noise. The disturbance coordinator will determine the cause of the noise complaint (e.g., bad muffler, etc.) and will require that reasonable measures be implemented to correct the problem. Conspicuously post a telephone number for the disturbance coordinator at the construction site and include in it the notice sent to neighbors regarding the construction schedule.

With the implementation of the identified BMPs above, the proposed project would reduce construction noise impacts to a less than significant level. (Less Than Significant Impact with Mitigation Incorporated)
Impact NOI-2: The project would not result in generation of excessive groundborne vibration or groundborne noise levels. (Less than Significant Impact) Construction of the proposed residential development would not require pile driving or other significant vibration caused by construction activity. Therefore, the construction of the proposed development would not generate vibration levels that exceed limits defined by the City of Daly City. (Less Than Significant Impact)
Impact NOI-3: The project would not be 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. The project would not expose people residing or working in the project area to excessive noise levels. (Less than Significant Impact)
SFO is a public-use airport located approximately 6.9 miles southeast of the project site. According to the Comprehensive Airport Land Use Compatibility Plan for the Environs of San Francisco International Airport, the project site lies outside the 65 dBA CNEL 2020 noise contour of the airport. Therefore, future exterior noise levels due to aircraft from SFO would be compatible with the City’s exterior noise standards for aircraft noise. (Less than Significant Impact)

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POPULATION AND HOUSING

4.14.1 Environmental Setting
Regulatory Framework
State
Housing Element Law
State requirements mandating that housing be included as an element of each jurisdiction’s general plan is known as housing-element law. The Regional Housing Need Allocation (RHNA) is the statemandated process to identify the total number of housing units (by affordability level) that each jurisdiction must accommodate in its housing element. California housing-element law requires cities to: 1) zone adequate lands to accommodate its RHNA; 2) produce an inventory of sites that can accommodate its share of the RHNA; 3) identify governmental and non-governmental constraints to residential development; 4) develop strategies and a work plan to mitigate or eliminate those constraints; and 5) adopt a housing element and update it on a regular basis.44 The City of Daly City Housing Element and related land use policies were last updated in 2015.

Regional and Local
Plan Bay Area 2040
Plan Bay Area 2040 is a long-range transportation, land-use, and housing plan intended support a growing economy, provide more housing and transportation choices, and reduce transportationrelated pollution and GHG emissions in the Bay Area. Plan Bay Area 2040 promotes compact, mixed-use residential and commercial neighborhoods near transit, particularly within identified PDAs.45 The project site is located within a PDA.

ABAG allocates regional housing needs to each city and county within the nine-county San Francisco Bay Area, based on statewide goals. ABAG also develops forecasts for population, households, and economic activity in the Bay Area. ABAG, MTC, and local jurisdiction planning staff created the Regional Forecast of Jobs, Population, and Housing, which is an integrated land use and transportation plan through the year 2040 (upon which Plan Bay Area 2040 is based).

Daly City 2030 General Plan
The General Plan includes policies for the purpose of avoiding or mitigating impacts resulting from development projects within the City. The following policies are specific to population and housing and are applicable to the proposed project.
44 California Department of Housing and Community Development. “Regional Housing Needs Allocation and Housing Elements” Accessed December 8, 2020. http://hcd.ca.gov/community-development/housingelement/index.shtml. 45 Association of Bay Area Governments and Metropolitan Transportation Commission. “Project Mapper.” http://projectmapper.planbayarea.org/. Accessed December 8, 2020.

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Policy/Task Description
Policy HE-1 Maintain and, where possible, create larger housing development sites throughout the City.

Policy HE-2 Support infill housing in existing neighborhoods by offering streamlined planning and environmental reviews.

Policy HE-3 Provide regulatory incentives for developers to construct higher-density mixed-use development along Mission Street, Geneva Avenue, and any other locations with close proximity to public transit.

Existing Conditions
According to a May 2022 estimate by the California Department of Finance, Daly City has a total population of 102,875persons.46 There are estimated to be 33,934 housing units in the City, with the largest categories of housing consisting of 15,907 single-detached units and 8,354 structures containing five or greater units.47 According to ABAG projections, Daly City’s population will grow to a total of 121,330 by 2040.48

4.14.2 Impact Discussion
Potentially
Significant
Impact
Less than
Significant
with Mitigation
Incorporated
Less than
Significant
Impact
No Impact
Would the project:
1) 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)?
2) Displace substantial numbers of existing
people or housing, necessitating the
construction of replacement housing
elsewhere?
Impact POP-1: The project would not 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). (Less than Significant Impact)
According to the City’s General Plan, an increase of approximately 950 residents per year is projected between 2010 and 2030. The project proposes to construct 13 net new housing units. With 46 California Department of Finance. E-5 Population and Housing Estimates for Cities, Counties, and the State 2011-2022 with 2020 Census Benchmark. Accessed on October 26, 2022. Available at:
http://dof.ca.gov/Forecasting/Demographics/Estimates/E-5/. 47 Ibid. 48 Association of Bay Area Governments. “Projections 2040.” Accessed December 8, 2020. Available at:
http://projections.planbayarea.org/.

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an average occupancy of 3.16residents per household,49 the proposed development would result in an increase of 41 new residents. Although the General Plan includes low-density housing on the project site, population growth induced by the proposed medium-density residential project would result in limited additional residential units in the City and remain consistent with planned growth under the General Plan and ABAG projections. Therefore, the proposed project would result in growth consistent with City plans. Additionally, the project is consistent with the General Plan policies to create larger housing development and support infill development (Policies HE-1.1 and HE-2). For this reason, there would be a less than significant impact due to direct or indirect unplanned population growth. (Less than Significant Impact)
Impact POP-2: The project would not displace substantial numbers of existing people or housing, necessitating the construction of replacement housing elsewhere. (Less than Significant Impact)
The project would demolish one single-family residence in order to construct the proposed 14 townhomes. The project would not displace a substantial number of existing people and would be constructing a net increase of 13 housing units. The project would not necessitate the construction of replacement housing elsewhere. (Less than Significant Impact) 49 California Department of Finance. E-5 Population and Housing Estimates for Cities, Counties, and the State 2011-2022 with 2020 Census Benchmark. Accessed on October 26, 2022. Available at:
http://dof.ca.gov/Forecasting/Demographics/Estimates/E-5/.

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PUBLIC SERVICES

4.15.1 Environmental Setting
Regulatory Framework
State
Government Code Section 66477
The Quimby Act (included within Government Code Section 66477) requires local governments to set aside parkland and open space for recreational purposes. It provides provisions for the dedication of parkland and/or payment of fees in lieu of parkland dedication to help mitigate the impacts from new residential developments. The Quimby Act authorizes local governments to establish ordinances requiring developers of new residential subdivisions to dedicate parks, pay a fee in lieu of parkland dedication, or perform a combination of the two.

Government Code Section 65995 through 65998
California Government Code Section 65996 specifies that an acceptable method of offsetting a project’s effect on the adequacy of school facilities is the payment of a school impact fee prior to the issuance of a building permit. Government Code Sections 65995 through 65998 set forth provisions for the payment of school impact fees by new development by “mitigating impacts on school facilities that occur (as a result of the planning, use, or development of real property” (Section 65996[a]). The legislation states that the payment of school impact fees “are hereby deemed to provide full and complete school facilities mitigation” under CEQA (Section 65996[b]).

Developers are required to pay a school impact fee to the school district to offset the increased demands on school facilities caused by the proposed residential development project. The school district is responsible for implementing the specific methods for mitigating school impacts under the Government Code.

Local
City of Daly City Capital Plan
In 2008, the City expanded its Capital Plan to cover a 20-year period. It was estimated that 2.8 million square feet of commercial space and 2,641 residential units would be added to the City, which is slightly more than projected in the 2013 General Plan. The study also projected the extent of capital improvements for public facilities which would be needed in the City over the same time period. The City identified the capital improvements which would be needed to provide City services to all areas over the next 20 years. The relationship between the additional projected commercial and residential development and the need for improvements in public facilities was analyzed. The City formulated impact fees that are based on the extent to which any need for new public facilities is attributed to new development.

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Daly City 2030 General Plan
The General Plan includes policies for the purpose of avoiding or mitigating impacts resulting from development projects within the City. The following policies are specific to public services and are applicable to the proposed project.

Policy/Task Description
Policy SE-3.1 Support and maintain the City’s Insurance Service Office rating of a Class 2, which establishes the fire insurance rates for the City.

Policy SE-3.2 Provide for a seven-minute total reflex time for arrival of a first due company to 90 percent of all emergency incidents.

Policy SE-3.3 Provide for an eleven-minute total reflex time for arrival of multiple fire companies to 90 percent of all structure fires.

Policy SE-3.4 Maintain fire company reliability, whereby 90 percent of all incidents are handled by the district fire company.

Existing Conditions
Fire Protection
The City of Daly City is served by the North County Fire Authority (NCFA), a Joint Powers Authority which currently serves the communities of Brisbane, Daly City, and Pacifica.50 The NCFA responds to all fires, hazardous materials spills, and medical emergencies in the City. The closest station to the project site is Station No. 92, located at 18 Bepler Street, approximately one mile north of the project site.

Police Protection
Police protection services for the project site are provided by the Daly City Police Department, which is headquartered at 333 90th Street, approximately 1.2 miles west of the project site. The Daly City Police Department employs 111 sworn personnel.51
Schools
The project site is located within the Jefferson Elementary School District and the Jefferson Union High School District. The nearest elementary school is Susan B. Anthony Elementary, approximately

0.5 miles east of the project site, located at 575 Abbot Avenue. The nearest middle school is Thomas R. Pollicita Middle School, approximately 0.3 miles east of the project site, located at 550 E. Market Street. The nearest high school is Jefferson High School, approximately 0.5 miles north of the project site, located at 6996 Mission Street.
50 City of Daly City. “Fire Department”. Accessed November 12, 2020. http://www.dalycity.org/City_Hall/Departments/Fire_Department.htm 51 City of Daly City. “Police Officer”. Accessed November 12, 2020. http://www.dalycity.org/City_Hall/Departments/police_department/employment/policeofficer.htm#:~:text=The%20 Daly%20City%20Police%20Department,serves%20a%20population%20of%20107%2C000.

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Parks
According to the General Plan, 13 municipal parks and 12 tot lots are located in Daly City, resulting in a total of 82.95 acres of developed public recreational open space. The nearest park is Hillside Park, approximately 0.4 miles northeast of the project site, located at 222 Lausanne Avenue. Hillside Park is approximately 6.40 acres and contains tennis courts, basketball courts, a playground for small children, picnic tables, open fields, walking trails, and a cultural center.

Libraries, Community Centers, and Other Facilities
The Daly City Library provides library services to the residents of Daly City. The nearest library branch, the John Daly Library, approximately 0.8 miles north of the project site, is located at 134 Hillside Boulevard.

There are two community centers, one art center, and one public clubhouse in Daly City. The nearest of these centers is the Albert Teglia Community Center, approximately 0.4 miles northeast of the project site, located at 285 Abbot Avenue.

4.15.2 Impact Discussion
Potentially
Significant
Impact
Less than
Significant
with Mitigation
Incorporated
Less than
Significant
Impact
No Impact
Would the project result in substantial adverse
physical impacts associated with the provision of
new or physically altered governmental facilities,
need for new or physically altered governmental
facilities, the construction of which could cause
significant environmental impacts, in order to
maintain acceptable service ratios, response times,
or other performance objectives for any of the
public services:
1) Fire Protection?
2) Police Protection?
3) Schools?
4) Parks?
5) Other Public Facilities?
Impact PS-1: The project would not 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 fire protection services. (Less than Significant Impact) As part of the permitting process, the North County Fire Department would review project plans before permits are issued to ensure compliance with all applicable fire and building code standards and to ensure that adequate fire and life safety measures are incorporated into the project in compliance with all applicable state and city fire safety regulations. The proposed project would

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result in an incremental increase in the demand for fire protection services. The service area of the NCFA includes the cities of Daly City, Brisbane, and Pacifica. As a result, the proposed project’s increase in service population would be insignificant compared to the total projected population increase within the NCFA service area. For this reason, the proposed project would not individually require new or altered fire protection facilities, and as a result, would have a less than significant impact on the environment. (Less than Significant Impact) Impact PS-2: The project would not 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 police protection services. (Less than Significant Impact) The proposed project would result in an incremental increase in the demand for police protection services within the DCPD service area. However, the increase of 41 residents (see Section 4.14 Population and Housing) would be insignificant with the total projected increase in population within the City. According to the City’s General Plan, an increase of approximately 950 residents per year is projected between 2010 and 2030. Thus, the increase in police service demand generated by the project would not exhaust existing police facilities. As a result, the proposed project would have a less than significant impact on the provision of police protection services and would not require the construction or alteration of existing facilities. (Less than Significant Impact) Impact PS-3: The project would not 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 schools. (Less than Significant Impact)
As previously mentioned in Section 4.15.1.2 Existing Conditions, the project site is within the Jefferson Elementary School District and the Jefferson Union High School District. According to the Developer Fee Justification Study for Jefferson Elementary School District published in 2014, the statewide student generation factor is 0.5 for grades K-8.52 According to the Level I Developer Fee Study for Jefferson Union High School District published in 2020, the student generation rate for multi-family housing units is 0.111.53 Thus, the proposed 14 new townhomes would generate approximately seven new students in K-8 and two new students in grades 9-12. Table 3.11-3 of the General Plan EIR presented future enrollment within the various school districts that serve Daly City, and concluded that after accommodating modest growth in student population from General Plan buildout, the Jefferson Elementary School District would have available capacity of 693 students, and Jefferson High School District would have available capacity of 573 students. Therefore, the number of new students generated by the project would not significantly impact school facilities and would not require new or altered school facilities. (Less than Significant Impact) 52 Jefferson Elementary School District. Developer Fee Justification Study for Jefferson Elementary School District.

February 2014. Accessed July 21, 2017.
53 Jack Schreder & Associates, Inc. Level I Developer Fee Study for Jefferson Union High School District. July 28, 2020.

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Impact PS-4: The project would not 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 parks. (Less than Significant Impact)
As previously described in Section 4.15.1.2 Existing Conditions, Daly City contains approximately

82.95 acres of developed public recreational open space. This does not include the numerous nearby regional park facilities. The approximately 6.40-acre Hillside Park is approximately 0.4 miles northeast of the project site.

Based on the City’s current parkland dedication ratio of three acres per 1,000 residents in the Municipal Code, the City will need to provide 15.8 acres of parkland to meet future need resulting from anticipated population growth (without ameliorating existing deficiencies). To meet this demand, the General Plan proposes a task to develop part of the 140-acre undeveloped Mussel Rock area into a park for community use. The program for the park will be further developed through Program RME-3 which calls for the preparation of a Parks and Recreation Analysis and Master Plan.

The Parks and Recreation Analysis and Master Plan will address existing and future opportunities for parks and recreational services for the city and guide the planning, selection, dedication and funding of future park land in the city. The Master Plan would allow priorities to be adopted and identify park site locations and development plans be determined at the time the acquisition and development process begins. The General Plan includes policies and programs to help parkland development to meet additional recreational need, which would reduce impact to a less than significant level. Given the expansive existing and planned park space within Daly City and the relatively small number of residents the project would generate, the project would not result in the need for new or altered park facilities. (Less than Significant Impact)
Impact PS-5: The project would not 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 other public facilities. (Less than Significant Impact) As described above, the residential population growth accommodated by the proposed project would result in an incremental increase in demand for City public services and facilities, including libraries.

However, the population increase resulting from the proposed project would be within the planned growth in service population of the City, and, as a result, would not cause a substantial adverse impact associated within the provision of new or altered libraries or other public facilities. (Less than Significant Impact)

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RECREATION

4.16.1 Environmental Setting
Regulatory Framework
State
Government Code Section 66477
The Quimby Act (included within Government Code Section 66477) requires local governments to set aside parkland and open space for recreational purposes. It provides provisions for the dedication of parkland and/or payment of fees in lieu of parkland dedication to help mitigate the impacts from new residential developments. The Quimby Act authorizes local governments to establish ordinances requiring developers of new residential subdivisions to dedicate parks, pay a fee in lieu of parkland dedication, or perform a combination of the two.

Local
Parkland Dedication
The City of Daly City Municipal Code currently has parkland dedication standards within Title 16 – Subdivisions. Section 16.30 of the Municipal Code has a standard for parks of three acres per 1,000 people. This requirement may be satisfied through either on-site park construction, land dedication, or an in-lieu fee equal to the land value plus ten percent towards costs of off-site improvements.54 Daly City 2030 General Plan
The General Plan includes policies for the purpose of avoiding or mitigating impacts resulting from development projects within the City. The following policies are specific to recreation and are applicable to the proposed project.

Policy/Task Description
Policy RME-11 Areas designated as open space recreation-public shall continue to be maintained and upgraded by the Public Works Department.

Policy RME-12 Encourage a diverse, equitable, and integrated system of park facilities throughout Daly City that are accessible to all age, social, and economic groups and all geographic areas of the City.

Policy RME-13 Require the dedication of parkland or the payment of an in-lieu fee in accordance with Subdivision Map Act.

Policy RME-14 Prioritize the dispersal of park in-lieu fees collected from the development of new subdivisions to ensure that the fees are spent in the appropriate areas. 54 City of Daly City. Municipal Code 16.30.050. Accessed December 8, 2020.

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Existing Conditions
Public recreational open space within Daly City consists of City parks and facilities, and State and County Parks. There are 13 municipal parks and 12 tot lots within Daly City, totaling 82.95 acres of developed recreational area.55 In addition to City parks, San Bruno Mountain State and County Park provides 2,063 acres of public park space comprising state and San Mateo County managed land.

The nearest recreational facility to the project site is Hillside Park, approximately 0.4 miles northeast of the project site, located at 222 Lausanne Avenue. Hillside Park is approximately 6.40 acres and contains tennis courts, basketball courts, a playground for small children, picnic tables, open fields, walking trails, and a cultural center.

4.16.2 Impact Discussion
Potentially
Significant
Impact
Less than
Significant
with Mitigation
Incorporated
Less than
Significant
Impact
No Impact
1) 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?
2) 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?
Impact REC-1: The project would not 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. (Less than Significant Impact)
The project would generate approximately 41 new residents. Residents generated by the project would result in an incremental increase in the use of existing neighborhood and regional parks and recreational facilities. Physical deterioration of these facilities would not be substantially accelerated by the increased use generated by the project. Additionally, the City is in the process of preparing a Parks and Recreation Analysis and Master Plan that will address existing and future opportunities for parks and recreational services within the city and guide the planning, selection, dedication and funding of future park land in the city. The Master Plan would allow priorities to be adopted and identify park site locations and development plans be determined at the time the acquisition and development process begins. Given the expansive existing and planned park space within Daly City and the relatively small number of residents the project would generate, the project would have a less than significant impact on existing recreational facilities. (Less than Significant Impact) 55 City of Daly City. Daly City 2030 General Plan. Resource Management Element. March 25, 2013.

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Impact REC-2: The project does not include recreational facilities or require the construction or expansion of recreational facilities which might have an adverse physical effect on the environment. (Less than Significant Impact) Each proposed townhome unit would include a minimum of 150 sf of private open space.

Construction and operation of these facilities is included in the analysis of this Initial Study. The project would not include any other recreational facilities or require the construction or expansion of recreational facilities. (Less than Significant Impact)

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TRANSPORTATION
The following discussion is based, in part, on a VMT Analysis prepared for the project by Hexagon Transportation Consultants, Inc. (Hexagon), dated December 2022. A copy of the report is included in Appendix E of this Initial Study.

4.17.1 Environmental Setting
Regulatory Framework
State
Regional Transportation Plan
MTC is the transportation planning, coordinating, and financing agency for the nine-county San Francisco Bay Area, including San Mateo County. MTC is charged with regularly updating the Regional Transportation Plan, a comprehensive blueprint for the development of mass transit, highway, airport, seaport, railroad, bicycle, and pedestrian facilities in the region. MTC and ABAG adopted Plan Bay Area 2040 in July 2017, which includes a Regional Transportation Plan to guide regional transportation investment for revenues from federal, state, regional and local sources through 2040.

Senate Bill 743
SB 743 establishes criteria for determining the significance of transportation impacts using a vehicle miles traveled (VMT) metric intended to promote the reduction of GHG emissions, the development of multimodal transportation networks, and a diversity of land uses. Specifically, SB 743 requires analysis of VMT in determining the significance of transportation impacts. Local jurisdictions were required by Governor’s Office of Planning and Research (OPR) to implement a VMT policy by July 1, 2020.

SB 743 did not authorize OPR to set specific VMT impact thresholds, but it did direct OPR to develop guidelines for jurisdictions to utilize. CEQA Guidelines Section 15064.3(b)(1) describes factors that might indicate whether a development project’s VMT may be significant. Notably, projects located within 0.50 mile of transit should be considered to have a less than significant transportation impact based on OPR guidance.

Regional and Local
San Mateo County Congestion Management Program
The City/County Association of Governments (C/CAG), as the Congestion Management Agency for San Mateo County, is required to prepare and adopt a Congestion Management Program (CMP) on a biennial basis. The purpose of the CMP is to identify strategies to respond to future transportation needs, develop procedures to alleviate and control congestion, and promote countywide solutions.

Also included in the CMP is the Traffic Impact Analysis (TIA) Policy, which provides uniform procedures to analyze traffic impacts. According to the CMP, an acceptable level of service at signalized intersections is LOS E.

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Daly City 2030 General Plan
The General Plan includes policies for the purpose of avoiding or mitigating impacts resulting from development projects within the City. The following policies are specific to transportation and are applicable to the proposed project.

Policy/Task Description
Policy CE-6 Support regional efforts to improve traffic while accommodating future development.

Policy CE-7 Ensure an effective transit system by supporting the work of other agencies in their efforts to expand public transit in and around Daly City.

Task CE-13.3 Consider impacts to the existing and future bicycle and pedestrian network when completing environmental review for private development projects, and require mitigation measures where necessary and reasonable to ensure that these systems are not impacted.

Existing Conditions
Roadway Network
Regional access to the project site is provided by I-280, State Route 82 (SR 82, also referred to as Mission Street), and State Route 1 (SR 1). Local access to the project site is provided via E. Market Street, Castle Street, San Pedro Road, John Daly Boulevard, Sullivan Avenue, and Junipero Serra Boulevard. These roadways are described below:

I-280 is an eight- to 12-lane freeway with a posted speed limit of 65 miles per hour (mph). The northsouth freeway connects Daly City with nearby cities, such as San Francisco and San Bruno, and regional destinations, such as San José. Additionally, it provides access to the greater freeway network with direct connections to Interstates 680 and 880, U.S. Highway 101, and State Routes 1, 35, 92, and 85. The Sullivan Avenue off-ramp provide access to the project site via San Pedro Road, from I-280 South. The Junipero Serra Boulevard interchange provides access to the project site via John Daly Boulevard from I-280 North.

SR 82 is a four- to six-lane state highway that functions as an arterial in the vicinity of the project site with a posted speed limit of 35 mph. It provides regional access to the project site from San Francisco to the north via its interchange with I-280. Interchanges at E. Market Street and Castle Street provide access to the project site via direct connections to 3rd Avenue from both the north and south of SR 82.

SR 1 is a six- to ten-lane freeway in the vicinity of the project with a posted speed limit of 65 mph.

SR1 extends northward through San Francisco and southward through Pacifica. The off-ramp at Junipero Serra Boulevard provides access to the project site via San Pedro Road, from SR 1 North.

The hook-ramp at John Daly Boulevard provides access to the project site via Hillside Boulevard, from SR 1 South.

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Bicycle and Pedestrian Facilities
Pedestrian access is provided via sidewalks along the 3rd Avenue frontage of the project site, and along other vicinity streets including Castle Street, E. Market Street, and Hillside Boulevard. The project vicinity largely lacks bicycle facilities. There are no designated bicycle lanes along Hillside Boulevard, E. Market Street, or Mission Street. John Daly Boulevard contains Class I bike lanes56 west of SR1. Class III bike lanes57 are proposed in the City’s Bicycle Master Plan for the remainder of John Daly Boulevard as well as Hillside Boulevard, E. Market Street, Mission Street, and other roadways in the project vicinity.

Transit Services
SamTrans
SamTrans provides the principal bus service in San Mateo County. It operates local and school buses, as well as express routes to San Francisco. It is also a service provider for paratransit. All scheduled buses are equipped with front-loading racks that can hold up to two bicycles. In the project vicinity, bus stops exist along E. Market Street and Hillside Boulevard. The closest bus stop is located on the corner of E. Market Street and Hillside Boulevard, approximately 0.2 miles southeast of the project site.

BART
The nearest BART station is the Colma BART station, located approximately 0.8 miles southwest of the project site. From the Colma BART station, riders can access Fremont, Pleasanton/Dublin, Richmond and Pittsburg as well as numerous points in between. Trains run on approximately 15- minute headways during commute hours. There are also a number of bus routes and shuttles operated by SamTrans that stop at the Colma BART station.

Methodology
VMT Analysis
At the time of this report, the City of Daly City is undertaking a process of updating its significance thresholds to be consistent with SB 743, and the CEQA 2019 Update Guidelines Section 15064.3, subdivision (b). The City has not released draft significance thresholds to determine project VMT impacts. In the absence of a City policy or draft numeric thresholds, this study utilized the OPR guidelines in analyzing VMT.
56 Class I bike lanes, or shared-use paths, are facilities with exclusive right of way for bicyclists and pedestrians, away from the roadway.
57 Class III bike lanes, or bike routes, designate a preferred route for bicyclists on streets shared with motor traffic not served by dedicated bikeways to provide continuity to the bikeway network.

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4.17.2 Impact Discussion
Potentially
Significant
Impact
Less than
Significant
with Mitigation
Incorporated
Less than
Significant
Impact
No Impact
Would the project:
1) Conflict with a program, plan, ordinance, or
policy addressing the circulation system,
including transit, roadways, bicycle lanes, and
pedestrian facilities?
2) Conflict or be inconsistent with CEQA
Guidelines Section 15064.3, subdivision (b)?
3) Substantially increase hazards due to a
geometric design feature (e.g., sharp curves or
dangerous intersections) or incompatible uses
(e.g., farm equipment)?
4) Result in inadequate emergency access?
Impact TRN-1: The project would not conflict with a program, plan, ordinance, or policy addressing the circulation system, including transit, roadways, bicycle lanes, and pedestrian facilities. (Less than Significant Impact) Roadways
The City of Daly City does not currently have an adopted VMT policy. Per SB 743, the City’s LOS standards cannot be used in CEQA analysis for transportation impacts. The CMP requires traffic impact analyses when a project generates greater than a 100 peak hour trips. The project would not generate more than 100 peak hour trips and, therefore, a County CMP analysis is not required. The project’s VMT impact is discussed in Impact TRN-2, below.

Bicycle and Pedestrian Facilities
The project would not generate a large volume of pedestrian or bicycle trips and would not exceed the capacity of existing facilities. The project would also not conflict with the City’s Bicycle and Pedestrian Master Plan.

Transit
The project could generate new transit users but is not anticipated to exceed the capacity of bus service near the project site. The project would not conflict with any SamTrans policies related to the transit system. (Less than Significant Impact)
Impact TRN-2: The project would not conflict or be inconsistent with CEQA Guidelines Section 15064.3, subdivision (b). (Less than Significant Impact) The VMT thresholds used for this project are based on the Governor’s Office of Planning and Research (OPR)’s recommendations. Per OPR guidelines, projects that generate or attract fewer than

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110 trips per day may be assumed to cause a less than significant transportation impact. The number of trips the project would generate were estimated using the Institute of Transportation Engineers’ (ITE) Trip Generation Manual, 10th Edition (2017) daily trip rates for “Multifamily Housing LowRise” (Land Use Code 220) located in a general Urban/Suburban area. The project would generate approximately 92 net new trips.

Furthermore, according to OPR, residential and office projects that locate in areas with low VMT, and that incorporate similar features (i.e., density, mix of uses, transit accessibility), will tend to exhibit similarly low VMT. According to the MTC’s ArcGIS VMT tool, the 2040 Plan Bay Area Model forecasted daily VMT for the project transportation analysis zone (TAZ 201) are 9.47, 9.3, and 8.36 miles per resident in years 2020, 2030, and 2040, respectively. The San Francisco Bay Area average daily VMT is 15.0, 14.4, and 13.8 miles per resident in years 2020, 2030, and 2040, respectively.

Given that the project would generate less than 110 trips and the average VMT for residents within the project’s transportation analysis zone is lower than the regional average, the project would have a less than significant VMT impact. (Less than Significant Impact) Impact TRN-3: The project would not substantially increase hazards due to a geometric design feature (e.g., sharp curves or dangerous intersections) or incompatible uses (e.g., farm equipment). (Less than Significant Impact) Vehicle access to the residences and parking lot would be provided via a 26-foot-wide driveway along 3rd Avenue with a ten-foot-wide vehicular access gate. Separated pedestrian access would be provided to the front townhomes via private, gated walkways extending from the 3rd Avenue sidewalk. A four-foot wide, gated walkway would be located adjacent to the project driveway and provide pedestrian access to the remainder of the townhomes. The project driveway would be clear of any obstructions, thereby ensuring the exiting vehicles can see pedestrians on the sidewalk, and bicyclists and other vehicles traveling along 3rd Avenue. Landscaping would be planted in a manner that would ensure no conflicts with a driver’s ability to locate a gap in traffic and see oncoming pedestrians, bicyclists, and vehicles. Trees planted along the project frontage on 3rd Avenue would be at the back of sidewalk and a proper height to provide sight lines for vehicles. No other objects exist or are proposed along the project frontages that would reduce vehicle sight distance. For these reasons, the proposed project would not create an operational safety hazard. (Less than Significant Impact)
Impact TRN-4: The project would not result in inadequate emergency access. (Less than Significant Impact)
The driveway would lead to a 120-foot hammerhead dead-end, turn-around apparatus, perpendicular to the driveway. The proposed internal access road would provide a hammerhead turnaround for circulation of emergency vehicles and would be reviewed by City staff to ensure adequacy.

Therefore, the project would not result in inadequate emergency access. (Less than Significant Impact)

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TRIBAL CULTURAL RESOURCES

4.18.1 Environmental Setting
Regulatory Framework
State
Assembly Bill 52
AB 52, effective July 2015, established a new category of resources for consideration by public agencies called Tribal Cultural Resources (TCRs). AB 52 requires lead agencies to provide notice of projects to tribes that are traditionally and culturally affiliated with the geographic area if they have requested to be notified. Where a project may have a significant impact on a tribal cultural resource, consultation is required until the parties agree to measures to mitigate or avoid a significant effect on a tribal cultural resource or until it is concluded that mutual agreement cannot be reached.

Under AB 52, TCRs are defined as follows:
• Sites, features, places, cultural landscapes, sacred places, and objects with cultural value to a California Native American tribe that are also either:
o Included or determined to be eligible for inclusion in the California Register of Historic Resources, or
o Included in a local register of historical resources as defined in Public Resources Code Section 5020.1(k).
• A resource determined by the lead agency to be a TCR.

Existing Conditions
Archaeological resources in Daly City consist primarily of the remains of the Ohlone Indian tribe, which inhabited a large area along the California Coast from the San Francisco Bay to the Monterrey Bay. The Mussel Rock archaeological site is the only source of Ohlone artifacts within the City.

The project site is currently vacant but was previously used for agricultural purposes and disturbed for construction of the associated greenhouses and single-family residence.

4.18.2 Impact Discussion
Potentially
Significant
Impact
Less than
Significant
with Mitigation
Incorporated
Less than
Significant
Impact
No Impact
Would the project cause a substantial adverse
change in the significance of a tribal cultural
resource, defined in Public Resources Code
Section 21074 as either a site, feature, place,
cultural landscape that is geographically defined in
terms of the size and scope of the landscape,
sacred place, or object with cultural value to a
California Native American tribe, and that is:

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Potentially
Significant
Impact
Less than
Significant
with Mitigation
Incorporated
Less than
Significant
Impact
No Impact
1) 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)?
2) 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 Resources
Code Section 5024.1, the lead agency shall
consider the significance of the resource to a
California Native American tribe.

Impact TCR-1: The project would not cause a substantial adverse change in the significance of a tribal cultural resource that is 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). (Less than Significant Impact with Mitigation Incorporated)
No tribes have contacted the City to request notification under AB 52. The project site is mostly undeveloped, with the exception of the single-family residence on the northern portion of the site. In the event that an inadvertent discovery of a tribal cultural resource is made, mitigation measures MM CUL-2.1, MM CUL-2.2, and MM CUL-3.1 would be implemented, as stated in Section 4.5 Cultural Resources of this Initial Study. (Less Than Significant Impact with Mitigation Incorporated) Impact TCR-2: The project would not cause a substantial adverse change in the significance of a tribal cultural resource that is 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. (Less than Significant Impact with Mitigation Incorporated) Please see response to Impact TCR-1. (Less than Significant Impact with Mitigation Incorporated)

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UTILITIES AND SERVICE SYSTEMS
The following discussion is based, in part, on a hydraulic analysis prepared for the project by Brown and Caldwell, dated May 2021, and a sanitary sewer capacity evaluation prepared for the project by Woodard & Curran, dated April 2021. Copies of these reports are included in Appendix F and Appendix G of this Initial Study, respectively.

4.19.1 Environmental Setting
Regulatory Framework
State
State Water Code
Pursuant to the State Water Code, water suppliers providing water for municipal purposes to more than 3,000 customers or supplying more than 3,000 acre-feet (approximately 980 million gallons) of water annually must prepare and adopt an urban water management plan (UWMP) and update it every five years. As part of a UWMP, water agencies are required to evaluate and describe their water resource supplies and projected needs over a 20-year planning horizon, water conservation, water service reliability, water recycling, opportunities for water transfers, and contingency plans for drought events. The City of Daly City adopted its most recent UWMP in June 2021.

Assembly Bill 939
The California Integrated Waste Management Act of 1989, or AB 939, established the Integrated Waste Management Board, required the implementation of integrated waste management plans, and mandated that local jurisdictions divert at least 50 percent of solid waste generated (from 1990 levels), beginning January 1, 2000, and divert at least 75 percent by 2010. Projects that would have an adverse effect on waste diversion goals are required to include waste diversion mitigation measures.

Assembly Bill 341
AB 341 sets forth the requirements of the statewide mandatory commercial recycling program.

Businesses that generate four or more cubic yards of garbage per week and multi-family dwellings with five or more units in California are required to recycle. AB 341 sets a statewide goal for 75 percent disposal reduction by the year 2020.

Senate Bill 1383
SB 1383 establishes targets to achieve a 50 percent reduction in the level of the statewide disposal of organic waste from the 2014 level by 2020 and a 75 percent reduction by 2025. The bill grants CalRecycle the regulatory authority required to achieve the organic waste disposal reduction targets and establishes an additional target that at least 20 percent of currently disposed edible food is recovered for human consumption by 2025.

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California Green Building Standards Code
CALGreen establishes mandatory green building standards for buildings in California. CALGreen was developed to reduce GHG emissions from buildings, promote environmentally responsible and healthier places to live and work, reduce energy and water consumption, and respond to state environmental directives. CALGreen covers five categories: planning and design, energy efficiency, water efficiency and conservation, material and resource efficiency, and indoor environmental quality.

Local
Daly City 2030 General Plan
The General Plan includes policies for the purpose of avoiding or mitigating impacts resulting from development projects within the City. The following policies are specific to utilities and service systems and are applicable to the proposed project.

Policy/Task Description
Policy RME-1 Reduce average per capita demand by implementing cost effective water conservation programs that address all applicable methods of water conservation.

Task RME-1.1 Enforce the provisions of the Indoor Water Use Efficiency Ordinance through an extensive public outreach campaign to residents and contractors, to be completed by 2014.

Policy RME-2 Require drought resistant landscaping and water conserving irrigation methods in new development, and encourage the replacement of existing water-intensive landscaping.

Task RME-2.1 Enforce the provisions of the Water Conservation in Landscaping Ordinance and conduct a public education effort to ensure that residents, businesses, and contractors are aware of the Ordinance provisions.

Policy RME-3 Continue to use recycled wastewater for irrigating and explore opportunities to expand capacity to accommodate its use in development projects, landscaped medians, golf courses, cemeteries, parks, and school playgrounds.

Policy RME-4 For development projects which will create water demand exceeding a pre-defined amount, require that developers provide a water supply analysis for the project to demonstrate water availability to adequately serve the proposed project.

Policy RME-8 Through the development of a Stormwater Management Program, ensure that all new development complies with applicable municipal stormwater Municipal Regional Stormwater NPDES Permit by incorporating controls that reduce water quality impacts over the life of the project in way that is both technically and economically feasible, and reduces pollutants in stormwater discharges to the maximum extent practicable.

Task RME-8.2 Evaluate acceptable development standards for stormwater treatment mechanisms and publish such standards for distribution to developers. Such standards shall be based on a thorough evaluation of modern stormwater control mechanisms and shall, to the extent feasible, consider soil conditions in various parts of Daly City.

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Task RME-8.4 Assess projected stormwater impacts from new development in conformance with the San Mateo County Water Pollution Prevention Program, CEQA Guidelines and relative to state and federal standards.

Policy RME-9 Balance stormwater mitigation measures with the other inherent benefits of higher density development that is in close proximity to public transit, i.e., reduction of VMT on local and regional roadways, to the ex-tent permitted under the Municipal Regional Stormwater Permit.

Policy HE-27 Through the development of a Stormwater Management Program, ensure that all new development complies with applicable Municipal Regional Stormwater NPDES Permit requirements by incorporating controls that reduce water quality impacts over the life of the project in way that is both technically and economically feasible, and reduces pollutants in stormwater discharges to the maximum extent practicable.

Daly City Urban Water Management Plan (2020)
The UWMP is a long-range plan that assesses the City’s water supply over a 25-year planning horizon (2045) to ensure adequate water supplies to meet existing and future demands for water. The UWMP presents forecasted supplies and demands, describes conservation programs, and includes a water shortage contingency analysis.

Daly City Municipal Code
Chapter 17.41, Water Conservation in Landscaping, establishes regulations to implement water conservation practices on existing and new landscapes. For projects containing more than 1,000 square feet of irrigated landscape, a landscape permit is required which requires irrigation design review. Further, this Chapter mandates that any owner of landscape of over one acre in size shall comply with local agency programs that may be instituted relating to irrigation audits, surveys and water use analysis, and shall maintain landscape irrigation facilities to prevent water waste and runoff.

Existing Conditions
Water Supply
Water service to the project site is provided by the Daly City Department of Water and Wastewater Resources (DWWR). The City relies on local groundwater pumping from six municipal wells and water supply purchases from the SFPUC.58 The City also uses tertiary recycled water from the North San Mateo County Sanitation District wastewater treatment plant, to offset potable/aquifer water demands. The project site is served by a four-inch water main in 3rd Avenue.

Storm Drainage
As discussed in Section 4.10 Hydrology and Water Quality, the project site is located within the Colma Creek Watershed which extends from San Bruno Mountain to its outlet at the San Francisco Bay just north of the San Francisco Airport and south of Point San Bruno. The project site is primarily unpaved, with the exception of the single-family residence and associated driveway. 58 City of Daly City. General Plan Environmental Impact Report. Utilities and Service Systems. 2012.

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Approximately 1,700 square feet (5.5 percent) of the 31,140 square-foot site is made up of impervious surface area while the rest of the project site (94.5 percent) is pervious surface area.

Stormwater not absorbed within the project site is directed to the curb inlets and conveyed into the existing 12-inch stormwater line under 3rd Avenue.

Wastewater/Sanitary Sewer System
Wastewater collection and treatment for Daly City is managed by the North San Mateo County Sanitation District (NSMCSD), which is a subsidiary of the City of Daly City. Wastewater produced within the District is treated at the NSMCSD Treatment Plant (WWTP), which is located at the corner of John Daly Boulevard and Lake Merced Boulevard.

Sanitary sewer lines in the project area are maintained by the City of Daly City Department of Water and Wastewater Resources. There is an existing six-inch sanitary sewer line in 3rd Avenue.

The City’s WWTP has an average dry weather flow design capacity of 10.3 million gpd. However, the NSMCSD discharges and operates the WWTP at or below the permitted average dry weather flow rate of eight million gpd (averaged over three consecutive dry months) and does not anticipate a need to increase the permitted flow rate in the next five years.

Solid Waste
Solid waste is collected from Daly City homes and businesses and is processed by Republic Services of Daly City at its Mussel Rock Transfer Station. Materials that cannot be recycled or composted are transferred to the Ox Mountain Sanitary Landfill near Half Moon Bay. In 2001, Browning-Ferris Industries, owner of the Ox Mountain Landfill, obtained a revised solid waste facility permit for Ox Mountain to increase the permitted disposal acreage from 173 acres to 191 acres and to change the closure date of the facility from 2018 to 2023, with a longer period of operation allowed pending renewal of the landfill’s permit. The current landfill permit estimates closure of the landfill in 2034.59 The Ox Mountain Landfill has a remaining capacity of approximately 22,180,000 cubic yards of solid waste. Capacity may change based on such factors such as amount of waste landfilled, compaction rates, waste settlement, and cover soil use, and therefore the closure date may also change.
59 CalRecycle. “Solid Waste Information Sheet: Corinda Los Trancos Landfill ( Ox Mtn) (41-AA-0002).” Accessed October 26, 2022. https://www2.calrecycle.ca.gov/SolidWaste/SiteActivity/Details/1561?siteID=3223

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4.19.2 Impact Discussion
Potentially
Significant
Impact
Less than
Significant
with Mitigation
Incorporated
Less than
Significant
Impact
No Impact
Would the project:
1) Require or result in the relocation or
construction of new or expanded water,
wastewater treatment or stormwater drainage,
electric power, natural gas, or
telecommunications facilities, the construction
or relocation of which could cause significant
environmental effects?
2) Have insufficient water supplies available to
serve the project and reasonably foreseeable
future development during normal, dry and
multiple dry years?
3) Result in a determination by the wastewater
treatment provider which serves or may serve
the project that it does not have adequate
capacity to serve the project’s projected
demand in addition to the provider’s existing
commitments?
4) 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?
5) Be noncompliant with federal, state, or local
management and reduction statutes and
regulations related to solid waste?
Impact UTL-1: The project would not require or result in the relocation or construction of new or expanded water, wastewater treatment or stormwater drainage, electric power, natural gas, or telecommunications facilities, the construction or relocation of which could cause significant environmental effects. (Less than Significant Impact)
Water
In order to accommodate the proposed townhomes, the project would include modifications to the existing water system. The project would upsize approximately 480 feet of the existing four-inch diameter water main in 3rd Avenue to an eight-inch water main from Castle Street to Habitat Way.

The existing four-inch water main is partially under the sidewalk and would be abandoned. The new eight-inch diameter water main would be constructed in the street right-of-way. All water connections currently served by the existing four-inch water main would be transferred to the new eight-inch water main. The proposed modifications to the existing water system would be subject to the construction-related mitigation measures and standard conditions described in previous sections of this Initial Study and thus, would not have a significant impact on the environment.

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Wastewater/Sanitary Sewer
Several capacity improvements have been planned for the trunk sewer downstream of the project site.

These improvements are not associated with the proposed townhomes and will be implemented separately by the City. Based on the sanitary sewer modeling completed for the project, the proposed development would result in a small increase in sewage flows that could be adequately supported by the existing sanitary sewer system without any additional modifications. Therefore, the project would not require new or expanded wastewater facilities.

Stormwater Drainage
The project would result in a net increase of impervious surface area. On-site stormwater treatment would occur through the use of flow-through planters and bio-retention areas. Consistent with the City’s requirements, the project would not increase site runoff from a 10-year storm for a duration of two hours of rainfall and will retain any increased flow due to reduction in pervious surfaces.

Adherence to the City’s stormwater retention requirements would ensure the project would not require new or expanded stormwater facilities.

Electricity and Telecommunications
The project shall underground all electrical and telecommunication services, including adjacent property services as may be necessary to ensure that existing overhead drop services do not traverse the proposed townhomes. Undergrounding of electrical and telecommunication services shall be subject to the construction-related mitigation measures and standard conditions described in previous sections of this Initial Study and thus, would not have a significant impact on the environment. The project would result in an increase in utilities demand; however, the project would not necessitate substantial construction or relocation of utility facilities. (Less than Significant Impact) Impact UTL-2: The project would not have insufficient water supplies available to serve the project and reasonably foreseeable future development during normal, dry and multiple dry years. (Less than Significant Impact)
Based on the UWMP’s 2020 goal of 124 gallons per capita per day (gpcd), the project would result in a net increase of 5,084 gallons per day (gpd) in water demand.60 The UWMP estimated that the City would have excess water supply in normal, dry, and multiple-dry years through 2040. Excess water supply across all scenarios ranged from 91 to 333 million gallons per year (MGY). Increased water demand from the project would be equivalent to approximately two percent61 of the excess water available in the second- and third-year dry scenarios for 2020, the scenarios with the least amount of excess water. Therefore, the City has capacity to supply the project during normal, dry, and multiple dry years. (Less than Significant Impact)
60 41 net new residents x 124 gcpd = 5,084 gpd 61 5,084 gpd x 10-6 million gallons per gallon x 365 days of the year = 1.86 MGY.

1.86 MGY/ 91 MGY x 100 = 2.0 percent.

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Impact UTL-3: The project would not result in a determination by the wastewater treatment provider which serves or may serve the project that it does not have adequate capacity to serve the project’s projected demand in addition to the provider’s existing commitments. (Less than Significant Impact)
The WWTP has an average dry weather flow design capacity of 10.3 million gallons per day (mgd).

The General Plan FEIR determined that full buildout of the General would generate approximately

6.66 mgd. This is below the permitted flow rate of eight mgd, leaving 1.34 mgd of unused capacity at buildout. The project would add approximately 4,321 gpd62 of wastewater to be treated at the WWTP, or approximately 0.32 percent of the unused capacity. This would be a less than significant increase in wastewater flow. In addition, the WWTP monitors its wastewater to ensure that it meets all requirements and the RWQCB routinely inspects treatment facilities to ensure permit requirements are met. For these reasons, there would be adequate capacity at the WWTP. (Less than Significant Impact)
Impact UTL-4: The project would not 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. (Less than Significant Impact)
Waste generation and disposal data for Daly City is maintained by CalRecycle. According to the CalRecycle, the total amount of solid waste landfilled in 2019 was 52,899 tons.63 The project would generate approximately six tons of solid waste per year.64 The project would increase solid waste generation in the City by substantially less than one percent and therefore would not generate solid waste in excess of local standards or capacity and would not impair the attainment of solid waste reduction goals. (Less than Significant Impact)
Impact UTL-5: The project would not be noncompliant with federal, state, or local management and reduction statutes and regulations related to solid waste. (Less than Significant Impact)
The project would comply with solid waste management and reductions statutes and regulations including CALGreen requirements for recycling and salvaging of construction and demolition waste. (Less than Significant Impact)
62 Wastewater is conservatively estimated at 85 percent of potable water demand. 63 CalRecycle. “Disposal Rate Calculator”. Accessed December 8, 2020. https://www2.calrecycle.ca.gov/LGCentral/AnnualReporting/DisposalRateCalculator. 64 CalEEMod. Appendix D Default Data Tables: Table 10.1 Solid Waste Disposal Rates. October 2017. Solid waste disposal rates were calculated based on the land use type Condo/Townhouse.

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WILDFIRE

4.20.1 Environmental Setting
Regulatory Framework
Existing Conditions
The California Department of Forestry and Fire Protection (Cal Fire) is required by law to map areas of significant fire hazards based on fuels, terrain, weather, and other relevant factors. Referred to as Fire Hazard Severity Zones (FHSZ), these maps influence how people construct buildings and protect property to reduce risk associated with wildland fires. The project site is not located in a FHSZ.65

4.20.2 Impact Discussion
Potentially
Significant
Impact
Less than
Significant
with Mitigation
Incorporated
Less than
Significant
Impact
No Impact
If located in or near state responsibility areas or
lands classified as very high fire hazard severity
zones, would the project:
1) Substantially impair an adopted emergency
response plan or emergency evacuation plan?
2) 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?
3) 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?
4) 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?
The project site is not located in or near state responsibility areas or lands classified as very high fire hazard severity zones; therefore, the project would not result in wildfire impacts. (No Impact) 65 California Board of Forestry and Fire Protection. Fire Hazard Severity Zones Maps. Accessed November 11, 2020. https://osfm.fire.ca.gov/divisions/wildfire-prevention-planning-engineering/wildland-hazards-buildingcodes/fire-hazard-severity-zones-maps/

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MANDATORY FINDINGS OF SIGNIFICANCE
Potentially
Significant
Impact
Less than
Significant
with Mitigation
Incorporated
Less than
Significant
Impact
No Impact
1) 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 selfsustaining 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?
2) 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.)
3) Does the project have environmental effects
which will cause substantial adverse effects on
human beings, either directly or indirectly?
Impact MFS-1: The project does not 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. (Less than Significant Impact with Mitigation Incorporated) As discussed in the individual sections, the proposed project would not degrade the quality of the environment with the implementation of identified mitigation measures. As discussed in Section 4.4 Biological Resources, the project would not impact sensitive habitat or species but requires the implementation of appropriate mitigation measures for nesting preconstruction bird surveys. There are no historic buildings on-site or in the immediate project vicinity as discussed in Section 4.5 Cultural Resources. However, the project requires implementation of appropriate mitigation measures if project construction encounters buried archaeological resources. (Less Than Significant Impact with Mitigation Incorporated)

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Impact MFS-2: The project does not have impacts that are individually limited, but cumulatively considerable. (Less than Significant Cumulative Impact) Under Section 15065(a)(3) of the CEQA Guidelines, a lead agency shall find that a project may have a significant effect on the environment where there is substantial evidence that the project has potential environmental effects “that are individually limited, but cumulatively considerable.” As defined in Section 15065(a)(3) of the CEQA Guidelines, cumulatively considerable means “that the incremental effects of an individual project are significant when viewed in connection with the effects of past projects, the effects of other current projects, and the effects of probable future projects.”
Resource Topics with No Cumulative Impact
The project would not result in wildlife hazards and would have no impact on agricultural resources or mineral resources. Impacts discussed in Geology and Soils and Land Use, would all be less than significant and would be limited to the project site. Therefore, the project has no potential to combine with other projects to result in cumulative impacts to those resources. (No Cumulative Impact) Air Quality and GHGs
Because criteria air pollutant and GHG emissions would contribute to regional and global emissions of such pollutants, the identified thresholds developed by BAAQMD and used by the City of Daly City were developed such that a project-level impact would also be a cumulatively considerable impact. The project would not result in a significant emissions of criteria air pollutants or GHG emissions and, therefore, would not make a substantial contribution to cumulative air quality or GHG emissions impacts. The discussion in Section 4.3 Air Quality provides analysis of the cumulative health risk effects of the project’s TACs emissions during construction, and concluded those effects would be less than significant. (Less than Significant Cumulative Impact) Biological Resources
The project would have no impact on special status species, wetlands, riparian habitat, or conflict with applicable habitat plans. The project would result in a net increase of six trees and with implementation of MM BIO-1.1 would have a less than significant impact on nesting birds.

Therefore, the project would have no potential to combine with other projects to result in a cumulatively significant impact. (Less than Significant Cumulative Impact with Mitigation Incorporated)
Hydrology and Water Quality
Cumulative developments near the project would be subject to similar hydrological and urban runoff conditions. All projects occurring within Daly City would be required to implement the same Standard Conditions of Approval and measures related to construction water quality as the proposed project (including preparation of a SWPPP if disturbance if greater than one acre). In addition, all current and probable future projects that would disturb more than one acre of soil or replace/add more at least 10,000 square feet of impervious surfaces would be required to meet applicable site design and runoff reduction measures. For these reasons, the cumulative projects, including the

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proposed project, would not result in significant cumulative hydrology or water quality impacts. (Less than Significant Cumulative Impact)
Hazards and Hazardous Materials
The use, storage, transportation, and disposal of maintenance chemicals of the project would be managed in accordance with existing laws and regulations that ensure herbicide and pesticide storage, and transportation to and from the cumulative sites. The project would implement MM HAZ-2.1 to address impacted soils on the site and ensure the project would not result in a significant cumulative impact related to hazardous materials. (Less than Significant Cumulative Impact with Mitigation Incorporated)
Noise
Construction noise would be temporary and would be kept to a less than significant level by the implementation of MM NOI-1.1. There are several projects along Mission Street that may be under construction at the same time as the proposed project.66 The nearest of which is located at 7310 Mission Street, approximately 1,000 feet from the project site. It is not likely that this project would have potential to combine noise impacts with the project to result in cumulatively significant construction noise due to the distance between the projects. Additionally, the project at 7310 Mission Street, and any other nearby projects, would be required to implement similar construction noise BMPs and therefore, would not generate construction noise that would result in a cumulatively significant impact. The project’s operational noise would be compatible with the surrounding residences and would not have potential to contribute to a significant cumulative operational noise impact. (Less than Significant Cumulative Impact with Mitigation Incorporated) Population and Housing, Public Services and Recreation
The project would result in a net increase of 13 DU. Population growth generated by the project and cumulative projects would be consistent with the growth projected by the General Plan. Residents of the proposed project would be served by existing public services and recreational facilities. The project would not result in the need for new or altered facilities. The project would not result in a cumulatively significant impact on population and housing, public services or recreational facilities. (Less than Significant Cumulative Impact)
Transportation
The project would generate approximately 92 net new vehicle trips per day. The project would result in a less than significant number of VMT. The project would be consistent with applicable policies regarding transportation and circulation and, therefore, would not result in a cumulative conflict with those policies. The project would comply with current building and fire codes and be reviewed by the NCFA to ensure adequate emergency access, as would all other projects in the vicinity. Therefore, the project would not result in a cumulatively significant impact to emergency access or other transportation issues. (Less than Significant Cumulative Impact) 66City of Daly City, Planning Division. Current Residential Project List. February 11, 2020. Accessed February 2, 2021. https://www.dalycity.org/DocumentCenter/View/3396/Current-Project-List-Updated-01-01-20-PDF?bidId=

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Impact MFS-3: The project does not have environmental effects which will cause substantial adverse effects on human beings, either directly or indirectly. (Less than Significant Impact with Mitigation Incorporated)
Consistent with Section 15065(a)(4) of the CEQA Guidelines, a lead agency shall find that a project may have a significant effect on the environment where there is substantial evidence that the project has the potential to cause substantial adverse effects on human beings, either directly or indirectly.

Under this standard, a change to the physical environment that might otherwise be minor must be treated as significant if people would be significantly affected. This factor relates to adverse changes to the environment of human beings generally, and not to effects on particular individuals. While changes to the environment that could indirectly affect human beings would be represented by all of the designated CEQA issue areas, those that could directly affect human beings include construction TACs, lead-contaminated soils, and noise. However, implementation of mitigation measures and General Plan policies would reduce these impacts to a less than significant level. No other direct or indirect adverse effects on human beings have been identified. (Less Than Significant Impact with Mitigation Incorporated)

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SECTION 5.0 REFERENCES
The analysis in this Initial Study is based on the professional judgement and expertise of the environmental specialists preparing this document, based upon review of the site, surrounding conditions, site plans, and the following references:

AEI Consultants. Phase I Environmental Site Assessment. October 1, 2020.

Association of Bay Area Governments and Metropolitan Transportation Commission. “Project Mapper.” http://projectmapper.planbayarea.org/. Accessed December 8, 2020.

Association of Bay Area Governments. “Projections 2040”. Accessed December 8, 2020. Available at: http://projections.planbayarea.org/.

BAAQMD. CEQA Air Quality Guidelines. Table 3-1. May 2017.

BAAQMD. Final 2017 Clean Air Plan. April 19, 2017. http://www.baaqmd.gov/plans-andclimate/air-quality-plans/current-plans.

Brown and Caldwell. Hydraulic Analysis for the 141 Third Avenue Project. May 24, 2021.

CAL FIRE. San Mateo County Fire Hazard Severity Zones. Map. November 6, 2007.

CalEEMod. Appendix D Default Data Tables: Table 10.1 Solid Waste Disposal Rates. October 2017.

CalEPA. Cortese List Data Resources. Accessed December 1, 2020. https://calepa.ca.gov/sitecleanup/corteselist/
California Air Resources Board. “Overview: Diesel Exhaust and Health.” Accessed November 17, 2020. https://www.arb.ca.gov/research/diesel/diesel-health.htm.

California Air Resources Board. “The Advanced Clean Cars Program.” Accessed November 17, 2020. https://www.arb.ca.gov/msprog/acc/acc.htm.

California Board of Forestry and Fire Protection. Fire Hazard Severity Zones Maps. Accessed November 11, 2020. https://osfm.fire.ca.gov/divisions/wildfire-prevention-planningengineering/wildland-hazards-building-codes/fire-hazard-severity-zones-maps/ California Building Standards Commission. “California Building Standards Code.” Accessed November 17, 2020. https://www.dgs.ca.gov/BSC/Codes#@ViewBag.JumpTo.

California Department of Conservation. “California Important Farmland Finder.” Accessed November 12, 2020. https://maps.conservation.ca.gov/DLRP/CIFF/ California Department of Conservation. “Farmland Mapping and Monitoring Program.” Accessed November 12, 2020. http://www.conservation.ca.gov/dlrp/fmmp/Pages/Index.aspx.

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California Department of Conservation. “Williamson Act.” Accessed November 12, 2020. http://www.conservation.ca.gov/dlrp/lca.

California Department of Conservation. California Official Tsunami Inundation Maps. Accessed December 3, 2020.

California Department of Finance. E-5 Population and Housing Estimates for Cities, Counties, and the State 2011-2022 with 2020 Census Benchmark. Accessed on October 26, 2022. Available at: http://dof.ca.gov/Forecasting/Demographics/Estimates/E-5/.

California Department of Forestry and Fire Protection. “Fire and Resource Assessment Program.” Accessed November 12, 2020. http://frap.fire.ca.gov/.

California Department of Housing and Community Development. “Regional Housing Needs Allocation and Housing Elements” Accessed December 8, 2020. http://hcd.ca.gov/community-development/housing-element/index.shtml.

California Department of Tax and Fee Administration. “Net Taxable Gasoline Gallons.” Accessed December 8, 2020.
https://www.cdtfa.ca.gov/dataportal/dataset.htm?url=VehicleTaxableFuelDist.

California Energy Commission (CEC). “2019 Building Energy Efficiency Standards.” Accessed November 17, 2020. https://www.energy.ca.gov/programs-and-topics/programs/buildingenergy-efficiency-standards/2019-building-energy-efficiency.

California Energy Commission. 2019 Integrated Energy Policy Report. 2019.

California Energy Commission. Energy Consumption Data Management System. “Electricity Consumption by County.” Accessed December 8, 2020.
http://ecdms.energy.ca.gov/elecbycounty.aspx.

California Environmental Protection Agency. “Cortese List Data Resources.” Accessed May 28, 2020. https://calepa.ca.gov/sitecleanup/corteselist/.

California Gas and Electric Utilities. 2019 California Gas Report. Accessed December 8, 2020. https://www.socalgas.com/regulatory/documents/cgr/2019_CGR_Supplement_7-1-19.pdf.

California Office of Historic Preservation. “CEQA Guidelines Section 15064.5(a)(3) and California Office of Historic Preservation Technical Assistance Series #6.” Accessed November 17, 2020.
http://www.ohp.parks.ca.gov/pages/1069/files/technical%20assistance%20bulletin%206%20 2011%20update.pdf.

CalRecycle. “Disposal Rate Calculator”. Accessed December 8, 2020. https://www2.calrecycle.ca.gov/LGCentral/AnnualReporting/DisposalRateCalculator.

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CalRecycle. “Solid Waste Information Sheet: Corinda Los Trancos Landfill ( Ox Mtn) (41-AA0002).” Accessed October 26, 2022. https://www2.calrecycle.ca.gov/SolidWaste/SiteActivity/Details/1561?siteID=3223 CalTrans. California State Scenic Highway System Map. Accessed November 11, 2020. https://www.arcgis.com/apps/webappviewer/index.html?id=2e921695c43643b1aaf7000dfcc1 9983
C/CAG Board of Directors. Resolution 22-107. December 8, 2022.

City of Daly City, Planning Division. Current Residential Project List. February 11, 2020. Accessed February 2, 2021. https://www.dalycity.org/DocumentCenter/View/3396/Current-ProjectList-Updated-01-01-20-PDF?bidId= City of Daly City. “Fire Department”. Accessed November 12, 2020. http://www.dalycity.org/City_Hall/Departments/Fire_Department.htm City of Daly City. “Police Officer”. Accessed November 12, 2020. http://www.dalycity.org/City_Hall/Departments/police_department/employment/policeoffice r.htm#:~:text=The%20Daly%20City%20Police%20Department,serves%20a%20population% 20of%20107%2C000.

City of Daly City. Daly City 2030 General Plan. Resource Management Element. March 25, 2013.

City of Daly City. General Plan Environmental Impact Report, Hydrology. 2012.

City of Daly City. General Plan Environmental Impact Report. Utilities and Service Systems. 2012.

City of Daly City. General Plan Update EIR. Figure 3.5-6 Soil Erosion and Shrink Swell Potential.

October 2012.

City of Daly City. Municipal Code 16.30.050. Accessed December 8, 2020.

City of Daly City. Municipal Code Chapter 17.30.

Hexagon. VMT Analysis for New Townhomes at 141 3rd Avenue in Daly City, California.

December 21, 2022.

ICES. Phase II Subsurface Investigation. November 16, 2020.

Illingworth & Rodkin, Inc. 141 3rd Avenue Townhome Construction Community Risk Assessment.

January 29, 2021
Jack Schreder & Associates, Inc. Level I Developer Fee Study for Jefferson Union High School District. July 28, 2020.

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Jefferson Elementary School District. Developer Fee Justification Study for Jefferson Elementary School District. February 2014. Accessed July 21, 2017.

Office of Planning and Research. “Changes to CEQA for Transit Oriented Development – FAQ.” October 14, 2014. Accessed November 11, 2020. http://www.opr.ca.gov/ceqa/updates/sb743/transit-oriented.html.

Peninsula Clean Energy. “Energy Choices.” Accessed December 8, 2020. https://www.peninsulacleanenergy.com/faq/.

Peninsula Clean Energy. “Frequently Asked Questions.” Accessed December 8, 2020. https://www.peninsulacleanenergy.com/faq/.

Public Law 110–140—December 19, 2007. Energy Independence & Security Act of 2007. Accessed December 8, 2020. http://www.gpo.gov/fdsys/pkg/PLAW-110publ140/pdf/PLAW110publ140.pdf.

San Francisco Bay Hydrologic Region Westside Groundwater Basin, California’s Groundwater Bulletin 118, January 20, 2006.

TreanorHL. Historic Resources Evaluation. January 15, 2021.

U.S. Geological Survey. “Map of Quaternary Deposits and Liquefaction Susceptibility in the Central San Francisco Bay Region, California: Liquefaction Susceptibility”. Map. 2006.

United States Department of Energy. Energy Independence & Security Act of 2007. Accessed December 8, 2020. http://www.afdc.energy.gov/laws/eisa.

United States Department of the Interior. “Memorandum M-37050. The Migratory Bird Treaty Act Does Not Prohibit Incidental Take.” Accessed November 17, 2020. https://www.doi.gov/sites/doi.gov/files/uploads/m-37050.pdf.

United States Department of Transportation. USDOT Announces New Vehicle Fuel Economy Standards for Model Year 2024-2026.” Accessed October 26, 2022. https://www.nhtsa.gov/press-releases/usdot-announces-new-vehicle-fuel-economy-standardsmodel-year-2024-2026 United States Energy Information Administration. “State Profile and Energy Estimates, 2018.” Accessed December 8, 2020. https://www.eia.gov/state/?sid=CA#tabs-2.

United States Environmental Protection Agency. “Summary of the Resource Conservation and Recovery Act.” Accessed May 11, 2020. https://www.epa.gov/laws-regulations/summaryresource-conservation-and-recovery-act.

United States Environmental Protection Agency. “Superfund: CERCLA Overview.” Accessed May 11, 2020. https://www.epa.gov/superfund/superfund-cercla-overview.

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United States Environmental Protection Agency. “The 2021 EPA Automotive Trends Report:

Greenhouse Gas Emissions, Fuel Economy, and Technology since 1975.” November 2021.

Woodard & Curran. Sanitary Sewer Capacity Evaluation for 141 3rd Avenue. April 27, 2021.

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SECTION 6.0 LEAD AGENCY AND CONSULTANTS

LEAD AGENCY
City of Daly City
Department of Economic and Community Development
Michael Van Lonkhuysen, Planning Manager
Brian Paland, Assistant Planner

CONSULTANTS
David J. Powers & Associates, Inc.

Environmental Consultants and Planners
Will Burns, Principal Project Manager
Connor Tutino, Associate Project Manager
Ryan Osako, Graphic Artist
Hexagon Transportation Consultants, Inc.

Traffic Consultant
Gary Black, President
Shikha Jain, Transportation Planner
Illingworth & Rodkin, Inc.

Air Quality Consultant
Casey Divine, Air Quality Consultant
Zachary Palm, Air Quality Consultant
James Reyff, Principal
TreanorHL
Historic Resources Consultant
Kimberly Butt, Principal
Aysem Kilinc, Architectural Historian/Preservation Planner Elizabeth Graux, Architect

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SECTION 7.0 ACRONYMS AND ABBREVIATIONS
ABAG Association of Bay Area Governments
ACM Asbestos-containing material
AIA Airport Influence Area
ALUCP Airport Land Use Compatibility Plan
BAAQMD Bay Area Air Quality Management District
Bgs Below ground surface
BMPs Best Management Practices
Btu British thermal units
CalARP California Accidental Release Program
CAL FIRE California Department of Forestry and Fire Protection Cal/OSHA
California Department of Industrial Relations, Division of Occupational Safety and Health
CalTrans California Department of Transportation
CAP Clean Air Plan
CARB California Air Resources Board
CBC California Building Code
C/CAG City/County Association of Governments
CDFW California Department of Fish and Wildlife
CEC California Energy Commission
CERCLA Comprehensive Environmental Response, Compensation, and Liability Act CEQA California Environmental Quality Act
CFCs Chlorofluorocarbons
CGS California Geological Survey
CH4 Methane
CMP Congestion Management Plan
CO Carbon monoxide
CO2 Carbon dioxide
CO2e Carbon dioxide equivalent
CRHR California Register of Historical Resources
CUPA Certified Unified Program Agency

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DDD Dichlorodiphenyldichloroethane
DDE Dichlorodiphenyldichloroethylene
DDT Dichlorodiphenyltrichloroethane
DEHHSL Direct Exposure Human Health Screening Levels
DPM Diesel particulate matter
DTSC Department of Toxic Substances Control
DU Dwelling unit
DWWR Department of Water and Wastewater Resources
EIR Environmental Impact Report
EO Executive Order
EPA Environmental Protection Agency
FAA Federal Aviation Administration
FAR Federal Aviation Regulations
FEMA Federal Emergency Management Agency
FHBM Flood Hazard Boundary Map
FHSZ Fire Hazard Severity Zones
FIRM Flood Insurance Rate Maps
FMMP Farmland Mapping and Monitoring Program
FTA Federal Transit Administration
GHGs Greenhouse gases
Gpcd Gallons per capita per day
Gpd Gallons per day
GWP Global warming potential
HAZWOPER Hazardous Waste Operations and Emergency Response HCP Habitat Conservation Plan
HFCs Hydrofluorocarbons
HI Hazard Index
HSWA Federal Hazardous and Solid Waste Amendments
HVAC Heating, ventilation, and air conditioning
ICES Innovate and Creative Environmental Solutions
In./sec Inches/second
ITE Institute of Transportation Engineers
LBP Lead-based paint

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LID Low-impact development
LOS Level of service
MBTA Migratory Bird Treaty Act
MEI Maximally exposed individual
MGY Million gallons per year
MMTCO2e Million metric tons of CO2E
MND Mitigated Negative Declaration
Mpg Miles per gallon
Mph Miles per hour
MRP Municipal Regional Stormwater NPDES Permit
MTC Metropolitan Transportation Commission
NAHC Native American Heritage Commission
NCFA North County Fire Authority
NCP National Contingency Plan
NESHAP National Emission Standards for Hazardous Air Pollutants NFIP National Flood Insurance Program
NHPA National Historic Preservation Act
N2O Nitrous oxide
NOD Notice of Determination
NOI Notice of Intent
NOx Nitrogen oxide
NPDES National Pollutant Discharge Elimination System
NRHP National Register of Historic Places
NSFHA Non-Special Flood Hazard Area
NSMCSD North San Mateo County Sanitation District
O3 Ground-level ozone
OITC Outdoor-Indoor Transmission Class
OPR Office of Planning and Research
PCBs Polychlorinated biphenyls
PCE Peninsula Clean Energy
PDAs Priority Development Areas
PFCs Perfluorocarbons
PM Particulate matter

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PPV Peak particle velocity
RCRA Resource Conservation and Recovery Act
RHNA Regional Housing Need Allocation
R-LD Residential – Low Density
R-MD Residential – Medium Density
RWQCB Regional Water Quality Control Board
SB Senate Bill
SCS Sustainable Communities Strategy
Sf Square feet
SF6 Sulfur hexafluoride
SFHA Special Flood Hazard Area
SFO San Francisco International Airport
SFPUC San Francisco Public Utilities Commission
SHMA Seismic Hazards Mapping Act
SMARA Surface Mining and Reclamation Act
SMCEHSD San Mateo County Environmental Health Services Division SMGB State Mining and Geology Board
SOx Sulfur oxide
SR State Route
STC Sound Transmission Class
STLC Soluble Threshold Limit Concentration
SWPPP Storm Water Pollution Prevention Plan
SWRCB State Water Resources Control Board
TAC Toxic air contaminant
TAZ Transportation Analysis Zone
TCRs Tribal Cultural Resources
TIA Traffic Impact Analysis
TSCA Toxic Substances Control Act
USACE United States Army Corps of Engineers
USFWS United States Fish and Wildlife Service
UWMP Urban water management plan
VMT Vehicle miles traveled

141 3rd AVENUE TOWNHOME

CONSTRUCTION COMMUNITY

RISK ASSESSMENT
Daly City, California
January 29, 2021
Prepared for:

Connor Tutino
Researcher
David J. Powers & Associates, Inc.
1736 Franklin Street, Suite 300
Oakland, CA 94612
Prepared by:

Casey Divine,
Zachary Palm, &
James A. Reyff
429 East Cotati Avenue
Cotati, CA 94931
(707) 794-0400
I&R Project#: 20-185

1 Introduction
The purpose of this report is to address the potential community risk impacts associated with the construction of the proposed townhome project located at 141 3rd Avenue in Daly City, California.

The air quality impacts from this project would be associated with construction of the new buildings. Air pollutant emissions associated with construction of the project were predicted using appropriate computer models. In addition, the potential project construction health risk impacts and the impact of existing toxic air contaminant (TAC) sources affecting the nearby sensitive receptors were evaluated. The analysis was conducted following guidance provided by the Bay Area Air Quality Management District (BAAQMD).1 BAAQMD recommends using a 1,000-foot screening radius around the project site for purposes of identifying community health risk from existing sources of TACs.

Project Description
The project site is currently occupied by an approximate 1,200 square foot single-family home.

The remainder of the 0.68-acre site is vacant. The project proposes to demolish the existing use and construct 15 townhomes with enclosed garages. Construction is to begin in September of 2021 and is expected to complete in June of 2022.

Setting
The project is located in San Mateo County, which is in the San Francisco Bay Area Air Basin.

Ambient air quality standards have been established at both the State and federal level. The Bay Area meets all ambient air quality standards with the exception of ground-level ozone, respirable particulate matter (PM10), and fine particulate matter (PM2.5).

Air Pollutants of Concern
High ozone levels are caused by the cumulative emissions of reactive organic gases (ROG) and nitrogen oxides (NOX). These precursor pollutants react under certain meteorological conditions to form high ozone levels. Controlling the emissions of these precursor pollutants is the focus of the Bay Area’s attempts to reduce ozone levels. The highest ozone levels in the Bay Area occur in the eastern and southern inland valleys that are downwind of air pollutant sources. High ozone levels aggravate respiratory and cardiovascular diseases, reduced lung function, and increase coughing and chest discomfort.

Particulate matter is another problematic air pollutant of the Bay Area. Particulate matter is assessed and measured in terms of respirable particulate matter or particles that have a diameter of 10 micrometers or less (PM10) and fine particulate matter where particles have a diameter of 2.5 micrometers or less (PM2.5). Elevated concentrations of PM10 and PM2.5 are the result of both region-wide (or cumulative) emissions and localized emissions. High particulate matter levels aggravate respiratory and cardiovascular diseases, reduce lung function, increase mortality (e.g., lung cancer), and result in reduced lung function growth in children. 1 Bay Area Air Quality Management District, CEQA Air Quality Guidelines, May 2017.

2 Toxic Air Contaminants
Toxic air contaminants (TAC) are a broad class of compounds known to cause morbidity or mortality (usually because they cause cancer) and include, but are not limited to, the criteria air pollutants. TACs are found in ambient air, especially in urban areas, and are caused by industry, agriculture, fuel combustion, and commercial operations (e.g., dry cleaners). TACs are typically found in low concentrations, even near their source (e.g., diesel particulate matter [DPM] near a freeway). Because chronic exposure can result in adverse health effects, TACs are regulated at the regional, State, and federal level.

Diesel exhaust is the predominant TAC in urban air and is estimated to represent about threequarters of the cancer risk from TACs (based on the Bay Area average). According to the California Air Resources Board (CARB), diesel exhaust is a complex mixture of gases, vapors, and fine particles. This complexity makes the evaluation of health effects of diesel exhaust a complex scientific issue. Some of the chemicals in diesel exhaust, such as benzene and formaldehyde, have been previously identified as TACs by the CARB, and are listed as carcinogens either under the State's Proposition 65 or under the Federal Hazardous Air Pollutants programs.

Regulatory Setting
Federal Regulations
The United States Environmental Protection Agency (EPA) sets nationwide emission standards for mobile sources, which include on-road (highway) motor vehicles such trucks, buses, and automobiles, and non-road (off-road) vehicles and equipment used in construction, agricultural, industrial, and mining activities (such as bulldozers and loaders). The EPA also sets nationwide fuel standards. California also has the ability to set motor vehicle emission standards and standards for fuel used in California, as long as they are the same or more stringent than the federal standards.

In the past decade the EPA has established a number of emission standards for on- and non-road heavy-duty diesel engines used in trucks and other equipment. This was done in part because diesel engines are a significant source of NOX and particulate matter (PM10 and PM2.5) and because the EPA has identified DPM as a probable carcinogen. Implementation of the heavy-duty diesel onroad vehicle standards and the non-road diesel engine standards are estimated to reduce particulate matter and NOX emissions from diesel engines up to 95 percent in 2030 when the heavy-duty vehicle fleet is completely replaced with newer heavy-duty vehicles that comply with these emission standards.2

In concert with the diesel engine emission standards, the EPA has also substantially reduced the amount of sulfur allowed in diesel fuels. The sulfur contained in diesel fuel is a significant contributor to the formation of particulate matter in diesel-fueled engine exhaust. The new standards reduced the amount of sulfur allowed by 97 percent for highway diesel fuel (from 500 parts per million by weight [ppmw] to 15 ppmw), and by 99 percent for off-highway diesel fuel 2 USEPA, 2000. Regulatory Announcement, Heavy-Duty Engine and Vehicle Standards and Highway Diesel Fuel Sulfur Control Requirements. EPA420-F-00-057. December.

3 (from about 3,000 ppmw to 15 ppmw). The low sulfur highway fuel (15 ppmw sulfur), also called ultra-low sulfur diesel (ULSD), is currently required for use by all vehicles in the U.S.

All of the above federal diesel engine and diesel fuel requirements have been adopted by California, in some cases with modifications making the requirements more stringent or the implementation dates sooner.

State Regulations
To address the issue of diesel emissions in the state, CARB developed the Risk Reduction Plan to Reduce Particulate Matter Emissions from Diesel-Fueled Engines and Vehicles.3 In addition to requiring more stringent emission standards for new on-road and off-road mobile sources and stationary diesel-fueled engines to reduce particulate matter emissions by 90 percent, a significant component of the plan involves application of emission control strategies to existing diesel vehicles and equipment. Many of the measures of the Diesel Risk Reduction Plan have been approved and adopted, including the federal on-road and non-road diesel engine emission standards for new engines, as well as adoption of regulations for low sulfur fuel in California.

CARB has adopted and implemented a number of regulations for stationary and mobile sources to reduce emissions of DPM. Several of these regulatory programs affect medium and heavy-duty diesel trucks that represent the bulk of DPM emissions from California highways. CARB regulations require on-road diesel trucks to be retrofitted with particulate matter controls or replaced to meet 2010 or later engine standards that have much lower DPM and PM2.5 emissions.

This regulation will substantially reduce these emissions between 2013 and 2023. While new trucks and buses will meet strict federal standards, this measure is intended to accelerate the rate at which the fleet either turns over so there are more cleaner vehicles on the road or is retrofitted to meet similar standards. With this regulation, older, more polluting trucks would be removed from the roads sooner.

CARB has also adopted and implemented regulations to reduce DPM and NOX emissions from inuse (existing) and new off-road heavy-duty diesel vehicles (e.g., loaders, tractors, bulldozers, backhoes, off-highway trucks, etc.). The regulations apply to diesel-powered off-road vehicles with engines 25 horsepower (hp) or greater. The regulations are intended to reduce particulate matter and NOX exhaust emissions by requiring owners to turn over their fleet (replace older equipment with newer equipment) or retrofit existing equipment in order to achieve specified fleetaveraged emission rates. Implementation of this regulation, in conjunction with stringent federal off-road equipment engine emission limits for new vehicles, will significantly reduce emissions of DPM and NOX.

Bay Area Air Quality Management District (BAAQMD)
BAAQMD has jurisdiction over an approximately 5,600-square mile area, commonly referred to as the San Francisco Bay Area (Bay Area). The District’s boundary encompasses the nine San Francisco Bay Area counties, including Alameda County, Contra Costa County, Marin County, 3 California Air Resources Board, 2000. Risk Reduction Plan to Reduce Particulate Matter Emissions from DieselFueled Engines and Vehicles. October.

4 San Francisco County, San Mateo County, Santa Clara County, Napa County, southwestern Solano County, and southern Sonoma County.

BAAQMD is the lead agency in developing plans to address attainment and maintenance of the National Ambient Air Quality Standards and California Ambient Air Quality Standards. The District also has permit authority over most types of stationary equipment utilized for the proposed project. The BAAQMD is responsible for permitting and inspection of stationary sources; enforcement of regulations, including setting fees, levying fines, and enforcement actions; and ensuring that public nuisances are minimized.

The BAAQMD California Environmental Quality Act (CEQA) Air Quality Guidelines4 were prepared to assist in the evaluation of air quality impacts of projects and plans proposed within the Bay Area. The guidelines provide recommended procedures for evaluating potential air impacts during the environmental review process consistent with CEQA requirements including thresholds of significance, mitigation measures, and background air quality information. They also include assessment methodologies for air toxics, odors, and greenhouse gas emissions. Attachment 1 includes detailed community risk modeling methodology.

Daly City 2030 General Plan
The following air resources policies and implementing tasks contained in the Resource Management Element of the Daly City 2030 General Plan5
are applicable to the proposed project:

Policy RME-5: Assess projected air emissions from new development and associated construction and demolition activities in conformance with the Bay Area Air Quality Management District (BAAQMD) CEQA Guidelines, and relative to state and federal standards.
 Task RME-5.1: Amend the Planning Division’s development review procedures to include a formal step that would help identify how a development project can incorporate design or functional changes that will minimize air quality impacts.  Task RME-5.2: Incorporate air quality significance thresholds into the Local Thresholds of Significance document identified in Program RME-1.  Task RME-5.3: Consider cumulative air quality impacts consistent with the region's Clean Air Plan and State law.
 Task RME-5.4: Require the preparation of a Transportation Systems Management plan for new development that has been determined to contribute to a reduction in location air quality. Daly City 2030 General Plan | Resource Management Element 193 4 Bay Area Air Quality Management District, 2017. CEQA Air Quality Guidelines. May. 5 Daly City, 2013. Daly City 2030 General Plan. Adopted March 25, 2013.

5  Task RME-5.5: Consult with BAAQMD to identify stationary and mobile TAC sources and determine the need for and requirements of a health risk assessment for proposed developments. type, size and operations of the facility.

Policy RME-6: Assess projected air emissions from new development and associated construction and demolition activities in conformance with the Bay Area Air Quality Management District (BAAQMD) CEQA Guidelines, and relative to state and federal standards.
 Task RME-6.1: For new, expanded, or modified development proposals (including tenant improvements) that are potential sources of objectionable smoke and odor, require an analysis of possible smoke and odor impacts and the provision of smoke and odor minimization and control measures as mitigation. The requirements for such shall be codified within the Daly City Municipal Code.

Task RME-6.2: Require new residential development projects and projects categorized as sensitive receptors to be located an adequate distance from facilities that are existing and potential sources of odor. An adequate separate distance will be determined based upon the type, size and operations of the facility.

Sensitive Receptors
There are groups of people more affected by air pollution than others. CARB has identified the following persons who are most likely to be affected by air pollution: children under 16, the elderly over 65, athletes, and people with cardiovascular and chronic respiratory diseases. These groups are classified as sensitive receptors. Locations that may contain a high concentration of these sensitive population groups include residential areas, hospitals, daycare facilities, elder care facilities, and elementary schools. For cancer risk assessments, children are the most sensitive receptors, since they are more susceptible to cancer causing TACs. Residential locations are assumed to include infants and small children. The closest sensitive receptors to the project site are in the single- and multi-family residences adjacent to and surrounding the project site. There are also students at the nearby Thornton High School (14 years and older) to the west of the site and Milestone Academy Preschool (2 years and older) to the southeast of the site. This project would introduce new sensitive receptors (i.e., residents) to the area.

Significance Thresholds
In June 2010, BAAQMD adopted thresholds of significance to assist in the review of projects under CEQA and these significance thresholds were contained in the District’s 2011 CEQA Air Quality Guidelines. These thresholds were designed to establish the level at which BAAQMD believed air pollution emissions would cause significant environmental impacts under CEQA. The thresholds were challenged through a series of court challenges and were mostly upheld.

BAAQMD updated the CEQA Air Quality Guidelines in 2017 to include the latest significance thresholds, which were used in this analysis and are summarized in Table 1.

6 Table 1. Community Risk Significance Thresholds
Health Risks and
Hazards
Single Sources Within ¼-
Mile Zone of Influence
Combined Sources (Cumulative from all
sources within ¼-Mile zone of influence)
Excess Cancer Risk >10.0 per one million >100 per one million Hazard Index >1.0 >10.0
Incremental annual PM2.5 >0.3 µg/m3 >0.8 µg/m3
Note: PM10 = course particulate matter or particulates with an aerodynamic diameter of 10 micrometers (µm) or less, PM2.5 = fine particulate matter or particulates with an aerodynamic diameter of 2.5µm or less. GHG = greenhouse gases.

Construction Community Risk Impacts and Mitigation Measures Project impacts related to increased community risk can occur either by generating emissions of TACs and air pollutants and by introducing a new sensitive receptor in proximity to an existing source of TACs. Temporary project construction activity would generate emissions of DPM from equipment and trucks and also generate dust on a temporary basis that could affect nearby sensitive receptors. A construction community health risk assessment was prepared to address project construction impacts on the surrounding off-site sensitive receptors.

Additionally, the project could introduce new residents that are sensitive receptors, who would be exposed to existing sources of TACs and localized air pollutants in the vicinity of the project.

Therefore, the impact of the existing sources of TAC upon the existing sensitive receptors and new incoming sensitive receptors was assessed.

Community risk impacts are addressed by predicting increased lifetime cancer risk, the increase in annual PM2.5 concentrations, and computing the Hazard Index (HI) for non-cancer health risks.

Construction equipment and associated heavy-duty truck traffic generates diesel exhaust, which is a known TAC. These exhaust emissions pose health risks for sensitive receptors such as surrounding residents. The primary community risk impact issues associated with construction emissions are cancer risk and exposure to PM2.5. A health risk assessment of the project construction activities was conducted that evaluated potential health effects to nearby sensitive receptors from construction emissions of DPM and PM2.5. 6 This assessment included dispersion
modeling to predict the offsite and onsite concentrations resulting from project construction, so that lifetime cancer risks and non-cancer health effects could be evaluated. The methodology for computing community risks impacts is contained in Attachment 1.

Construction Period Emissions
The California Emissions Estimator Model (CalEEMod) Version 2016.3.2 was used to estimate emissions from on-site construction activity, construction vehicle trips, and evaporative emissions.

The project land use types and size, and anticipated construction schedule were input to CalEEMod. The CARB EMission FACtors 2017 (EMFAC2017) model was used to predict emissions from construction traffic, which includes worker travel, vendor trucks, and haul trucks.7 6 DPM is identified by California as a toxic air contaminant due to the potential to cause cancer. 7 See CARB’s EMFAC2017 Web Database at https://www.arb.ca.gov/emfac/2017/

7 The CalEEMod model output along with construction inputs are included in Attachment 2 and EMFAC2017 vehicle emissions modeling outputs are included in Attachment 3.

CalEEMod Modeling
Land Use Inputs
The proposed townhome land uses were entered into CalEEMod as described in Table 2.

Table 1. Summary of Project Land Use Inputs
Project Land Uses Size Units Square Feet (sf) Acreage
Condo/Townhouse 15 Dwelling Unit 33,675 0.68
Enclosed Parking Structure 30 Parking Spaces 2,245
Construction Inputs
CalEEMod computes annual emissions for construction that are based on the project type, size and acreage. The model provides emission estimates for both on-site and off-site construction activities. On-site activities are primarily made up of construction equipment emissions, while offsite activity includes worker, hauling, and vendor traffic. The construction build-out scenario for both phases, including equipment list and schedule, were based on information provided by the project applicant.

The construction equipment worksheets provided by the applicant included the schedule for each phase. Within each phase, the quantity of equipment to be used along with the average hours per day and total number of workdays was set to the default values in CalEEMod. Where CalEEMod doesn’t provide default values, conservatively high values were assumed for equipment required and hours operated. Since different equipment would have different estimates of the working days per phase, the hours per day for each phase was computed by dividing the total number of hours that the equipment would be used by the total number of days in that phase. The construction schedule assumed that the earliest possible start date would be September 2021 and would be built out over a period of approximately ten months, or 206 construction workdays. The earliest year of full operation was assumed to be 2023.

Construction Truck Traffic Emissions
The latest version of the CalEEMod model is based on the older version of the CARB EMFAC2014 motor vehicle emission factor model. This model has been superseded by the EMFAC2017 model; however, CalEEMod has not been updated to include EMFAC2017.

Construction would produce traffic in the form of worker trips and truck traffic. The traffic-related emissions are based on worker and vendor trip estimates produced by CalEEMod and haul trips that were computed based on the estimate of demolition material to be exported, soil material imported and/or exported to the site, and the estimate of cement and asphalt truck trips. CalEEMod provides daily estimates of worker and vendor trips for each applicable phase. The total trips for those were computed by multiplying the daily trip rate by the number of days in that phase. Haul trips for demolition and grading were estimated from the provided pavement demolition and

8 grading volumes. The number of concrete and asphalt total round haul trips were provided for the project and converted to total one-way trips, assuming two trips per delivery.

The construction traffic information was combined with EMFAC2017 motor vehicle emissions factors. EMFAC2017 provides aggregate emission rates in grams per mile for each vehicle type.

The vehicle mix for this study was based on CalEEMod default assumptions, where worker trips are assumed to be comprised of light-duty autos (EMFAC category LDA) and light duty trucks (EMFAC category LDT1and LDT2). Vendor trips are comprised of delivery and large trucks (EMFAC category MHDT and HHDT) and haul trips, including cement trucks, are comprised of large trucks (EMFAC category HHDT). Travel distances are based on CalEEMod default lengths, which are 10.8 miles for worker travel, 7.3 miles for vendor trips and 20 miles for hauling (demolition material export and soil import/export). Since CalEEMod does not address cement trucks, these were treated as vendor travel distances. Each trip was assumed to include an idle time of 5 minutes. Emissions associated with vehicle starts were also included. On road emissions in Santa Clara County for 2021 and 2022 were used in these calculations. Table 3 provides the traffic inputs that were combined with the EMFAC2017 emission database to compute vehicle emissions.

Table 3. Construction Traffic Data Used for EMFAC2017 Model Runs CalEEMod Run/Land
Uses and Construction
Phase
Trips by Trip Type
Notes
Total
Worker1
Total
Vendor1
Total
Haul2
Vehicle mix1

62.6% LDA

8.8% LDT1

28.5% LDT2

77.2% MHDT

22.8% HHDT 100% HHDT
Trip Length (miles) 10.8 7.3 20.0 (Demo/Soil)

7.3 (Cement/Asphalt)
CalEEMod default distance
with 5-min truck idle time.

Demolition 110 - 5
1,200 square foot building
demolition. CalEEMod
default worker trips.

Site Preparation 115 - - CalEEMod default worker
trips.

Grading 210 - 75
400-cy soil import. 200-cy
soil export. CalEEMod
default worker trips.

Trenching 132 - - CalEEMod default worker
trips.

Building Construction 1,296 216 230
115 cement round trips.

CalEEMod default worker
and vendor trips.

Architectural Coating 134 - - CalEEMod default worker
trips.

Paving 54 - 300 150 tons asphalt. CalEEMod
default worker trips.

Notes: 1 Based on 2021-2022 EMFAC2017 light-duty vehicle fleet mix for San Mateo County. 2 Includes grading trips estimated by CalEEMod based on amount of material to be removed.

Summary of Computed Construction Period Emissions
The CalEEMod model and EMFAC2017 emissions provided total annual PM10 exhaust emissions (assumed to be DPM) for the off-road construction equipment and for exhaust emissions from onPage 768 of 1462 9 road vehicles, with total emissions from all construction stages as 0.0386 tons (77 pounds). The on-road emissions are a result of haul truck travel during demolition and grading activities, worker travel, and vendor deliveries during construction. A trip length of one mile was used to represent vehicle travel while at or near the construction site. It was assumed that these emissions from onroad vehicles traveling at or near the site would occur at the construction site. Fugitive PM2.5 dust emissions were calculated by CalEEMod as 0.0046 tons (9 pounds) for the overall construction period.

Community Health Risk from Project Construction
Dispersion Modeling
The U.S. EPA AERMOD dispersion model was used to predict concentrations of DPM and PM2.5 concentrations at sensitive receptors in the vicinity of the project construction area. The AERMOD dispersion model is a BAAQMD-recommended model for use in modeling analysis of these types of emission activities for CEQA projects.8

Construction Sources
To represent the construction equipment exhaust emissions, an area source emission release height of 20 feet (6 meters) was used for the area sources.9 The release height incorporates both the physical release height from the construction equipment (i.e., the height of the exhaust pipe) and plume rise after it leaves the exhaust pipe. Plume rise is due to both the high temperature of the exhaust and the high velocity of the exhaust gas. It should be noted that when modeling an area source, plume rise is not calculated by the AERMOD dispersion model as it would do for a point source (exhaust stack). Therefore, the release height from an area source used to represent emissions from sources with plume rise, such as construction equipment, should be based on the height the exhaust plume is expected to achieve, not just the height of the top of the exhaust pipe.

For modeling fugitive PM2.5 emissions, a near-ground level release height of 7 feet (2 meters) was used for the area source. Fugitive dust emissions at construction sites come from a variety of sources, including truck and equipment travel, grading activities, truck loading (with loaders) and unloading (rear or bottom dumping), loaders and excavators moving and transferring soil and other materials, etc. All of these activities result in fugitive dust emissions at various heights at the point(s) of generation. Once generated, the dust plume will tend to rise as it moves downwind across the site and exit the site at a higher elevation than when it was generated. For all these reasons, a 7-foot release height was used as the average release height across the construction site.

Emissions from the construction equipment and on-road vehicle travel were distributed throughout the modeled area sources.

8 Bay Area Air Quality Management District (BAAQMD), 2012, Recommended Methods for Screening and Modeling Local Risks and Hazards, Version 3.0. May.
9 California Air Resource Board, 2007. Proposed Regulation for In-Use Off-Road Diesel Vehicles, Appendix D:

Health Risk Methodology. April. Web: https://ww3.arb.ca.gov/regact/2007/ordiesl07/ordiesl07.htm

10 AERMOD Inputs and Meteorological Data
The modeling used a three-year data set (2010, 2012, 2013) of hourly meteorological data from the Fort Funston prepared for use with the AERMOD model by BAAQMD. Construction emissions were modeled as occurring daily between 7:00 a.m. to 6:00 p.m., when the majority of construction activity would occur according to the applicant. Annual DPM and PM2.5 concentrations from construction activities during the 2021-2022 period were calculated using the model. DPM and PM2.5 concentrations were calculated at nearby sensitive receptors. Receptor heights of 5 feet (1.5 meters) were used to represent the breathing height on the first floor of nearby single- and multi-family residences.10 Receptor heights of 3 feet (1 meter) were used to represent the breathing height of the children at the high school and preschool.

Summary of Construction Community Risk Impacts
The maximum increased cancer risks were calculated using the modeled TAC concentrations combined with the Office of Environmental Health Hazard Assessment (OEHHA)guidance for age sensitivity factors and exposure parameters as recommended by BAAQMD (see Attachment 1). Non-cancer health hazards and maximum PM2.5 concentrations were also calculated and identified. Age-sensitivity factors reflect the greater sensitivity of infants and small children to cancer causing TACs. Infant, child, and adult exposures were assumed to occur at all residences during the entire construction period. For the students, children at Milestone Academy Preschool and Thornton High School were assumed to be two years and older. The child (ages 2 through 16 years old) cancer risk parameters were used to calculate the increased cancer risk for the students.

The maximum modeled annual PM2.5 concentration was calculated based on combined exhaust and fugitive concentrations. The maximum computed HI value was based on the ratio of the maximum DPM concentration modeled and the chronic inhalation refence exposure level of 5 µg/m3 .

The maximum-modeled annual DPM and PM2.5 concentrations, which includes both the DPM and fugitive PM2.5 concentrations, were identified at nearby sensitive receptors (as shown in Figure 1) to find the maximally exposed individuals (MEI). Results of this assessment indicated that the construction residential MEI was located at single-family home east of the construction project site. Table 4 summarizes the maximum cancer risks, PM2.5 concentrations, and health hazard indexes for project related construction activities affecting the construction MEI. Attachment 4 to this report includes the emission calculations used for the construction area source modeling and the cancer risk calculations.

Additionally, modeling was conducted to predict the cancer risks, non-cancer health hazards, and maximum PM2.5 concentrations associated with construction activities at the nearby high school and preschool. The maximum increased cancer risks were adjusted using child exposure parameters. The uncontrolled cancer risk, PM2.5 concentration, and HI at the nearby high school and preschool do not exceed their respective BAAQMD single-source significance thresholds, as shown in Table 4.
10 Bay Area Air Quality Management District, 2012, Recommended Methods for Screening and Modeling Local Risks and Hazards, Version 3.0. May. Web: https://www.baaqmd.gov/~/media/files/planning-andresearch/ceqa/risk-modeling-approach-may-2012.pdf?la=en

11 Table 4. Construction Risk Impacts at the Off-site MEI Source Cancer Risk
(per million)
Annual PM2.5
(µg/m3)
Hazard
Index
Project Impact
Project Construction Unmitigated
Mitigated*

30.5 (infant)

1.7 (infant)

0.23 0.04

0.03 <0.01
BAAQMD Single-Source Threshold >10.0 >0.3 >1.0
Exceed Threshold? Unmitigated
Mitigated*
Yes
No
No
No
No
No
Most Affected Nearby School – Milestone Academy Preschool Child Receptors Project Construction Unmitigated 0.9 (child) 0.02 <0.01 BAAQMD Single-Source Threshold >10.0 >0.3 >1.0
Exceed Threshold? Unmitigated No No No
* Construction equipment with Tier 4 interim engines and Best Management Practices as Mitigation Measures.

Figure 1. Project Construction Site, Locations of Off-Site Sensitive Receptors, and Maximum TAC Impact Location

12 Cumulative Community Risks of all TAC Sources at the Offsite Project MEI Community health risk assessments typically look at all substantial sources of TACs that can affect sensitive receptors that are located within 1,000 feet of a project site (i.e., influence area). These sources include rail lines, highways, busy surface streets, and stationary sources identified by BAAQMD. A review of the project influence area based on provided information indicates that traffic on Mission Street (State Route 82) would exceed an average daily traffic (ADT) of 10,000 vehicles. A review of BAAQMD’s stationary source geographic information systems (GIS) map tool identified four stationary sources with the potential to affect the project site and MEI. Figure 2 shows the location of sources affecting the project site and MEI. Community risk impacts from these sources upon the MEI reported in Table 5. Details of the modeling and community risk calculations are included in Attachment 5.

Figure 2. Project Site and Nearby TAC and PM2.5 Sources Highways – Mission Street (State Route 82)
BAAQMD provided raster files with cancer risk and PM2.5 values for all highways/freeways, roadways (ADT > 30,000), and rail lines within the Bay Area. The risk values shown in the raster files were modeled in AERMOD in 20x20-meter grid cells. The files incorporate AADT for the

13 highway using EMFAC 2014 data for fleet mix and include the OEHHA 2015 factor. These raster files were used to screen the Mission Street (S.R.82) risks and hazards upon the MEI. The MEI is approximately 1,025 feet east of the state route. At the edge of the MEI, the increased cancer risk would be 5.1 per million and the PM2.5 value would be 0.17 µg/m3. Note that the cancer risk value is not adjusted for age sensitivity or exposure duration. It is conservatively higher than adjusted cancer risk values. Refined modeling of the state route would have resulted in even lower risk values. Note that BAAQMD has found that non-cancer hazards were found to be minimal, so an HI value is not included. The rail line screening levels are listed in Table 5.

BAAQMD Permitted Stationary Sources
Permitted stationary sources of air pollution near the project site were identified using BAAQMD’s Permitted Stationary Sources 2018 GIS website.11 This mapping tool identifies the location of nearby stationary sources and their estimated risk and hazard impacts. Four sources were identified using this tool with three sources being auto body coating equipment and one a gas dispensing facility. A Stationary Source Information Form (SSIF) containing the identified sources was prepared and submitted to BAAQMD. BAAQMD provided input and clarification about the stationary sources.12
The screening level risks and hazards for the three generic sources reported by BAAQMD were adjusted for distance using BAAQMD’s Distance Adjustment Multiplier Tool for Generic Equipment. The gas station source #112293 had high screening risk levels that were close to the project site. Therefore, emissions data provided by BAAQMD were input into BAAQMD’s Risk and Hazards Emissions Screening Calculator, which is a more refined screening tool that computes the cancer risk, annual PM2.5 concentrations, and HI using adjustments to account for new OEHHA guidance and distance between the receptor and source. Community risk impacts from the stationary sources upon the MEI is reported in Table 5.

Summary of Cumulative Health Risk Impact at Construction MEI

Table 5 reports both the project and cumulative community risk impacts at the sensitive receptors most affected by construction (i.e. the MEI). The project would have an exceedance with respect to community risk caused by project construction activities, since the maximum unmitigated cancer risk exceeds the BAAQMD single-source thresholds. With the implementation of Mitigation Measure AQ-1 and AQ-2, the project’s cancer risks would be lowered to a level below the single-source thresholds. The cancer risk, PM2.5 concentration, and HI, unmitigated and mitigated, does not exceed its cumulative threshold.

11 BAAQMD, Web:
https://baaqmd.maps.arcgis.com/apps/webappviewer/index.html?id=2387ae674013413f987b1071715daa65 12 Email correspondence with Areana Flores, MSc, Environmental Planner, BAAQMD, January 19, 2021.

14 Table 5. Impacts from Combined Sources at Project MEI Source Cancer Risk
(per million)
Annual PM2.5
(µg/m3)
Hazard
Index
Project Impacts
Project Construction Unmitigated
Mitigated

30.5 (infant)

1.7 (infant)

0.23 0.04

0.03 <0.01
BAAQMD Single-Source Threshold >10.0 >0.3 >1.0
Exceed Threshold? Unmitigated
Mitigated
Yes
No
No
No
No
No
Cumulative Sources
Mission Street (S.R. 82) – Raster Screening Data 5.1 0.17 -- Colma Auto Body Shop Inc (Facility ID #3603, Auto Body
Coating), MEI +1,000 feet -- -- <0.01
D&J Auto Body Specialists Inc. (Facility ID #14858, Auto Body Coating), MEI +1,000 feet -- -- <0.01
19th Auto Body Center (Facility ID #20658, Auto Body Coating), MEI 970 feet -- -- <0.01
Hillside Shell (Facility ID #112293, Gas Station), MEI 400 feet 4.0 -- 0.02 Combined Sources Unmitigated
Mitigated

39.6 (infant)

10.8 (infant)

0.40 0.21
<0.08
<0.06
BAAQMD Cumulative Source Threshold >100 >0.8 >10.0
Exceed Threshold? Unmitigated
Mitigated
No
No
No
No
No
No
Construction activities, particularly during site preparation and grading, would temporarily generate fugitive dust in the form of PM10 and PM2.5. Sources of fugitive dust would include disturbed soils at the construction site and trucks carrying uncovered loads of soils. Unless properly controlled, vehicles leaving the site would deposit mud on local streets, which could be an additional source of airborne dust after it dries. The BAAQMD CEQA Air Quality Guidelines consider these impacts to be less-than-significant if best management practices are implemented to reduce these emissions. Recommended Measure AQ-1 would implement BAAQMDrecommended best management practices.

Recommended Measure AQ-1: Include measures to control dust and exhaust during construction.

During any construction period ground disturbance, the applicant shall ensure that the project contractor implement measures to control dust and exhaust. Implementation of the measures recommended by BAAQMD and listed below would reduce the air quality impacts associated with grading and new construction to a less-than-significant level. Additional measures are identified to reduce construction equipment exhaust emissions. The contractor shall implement the following best management practices that are required of all projects:

1. All exposed surfaces (e.g., parking areas, staging areas, soil piles, graded areas, and unpaved access roads) shall be watered two times per day.

2. All haul trucks transporting soil, sand, or other loose material off-site shall be covered.

15 3. All visible mud or dirt track-out onto adjacent public roads shall be removed using wet power vacuum street sweepers at least once per day. The use of dry power sweeping is prohibited.

4. All vehicle speeds on unpaved roads shall be limited to 15 miles per hour (mph).

5. All roadways, driveways, and sidewalks to be paved shall be completed as soon as possible.

Building pads shall be laid as soon as possible after grading unless seeding or soil binders are used.

6. Idling times shall be minimized either by shutting equipment off when not in use or reducing the maximum idling time to 5 minutes (as required by the California airborne toxics control measure Title 13, Section 2485 of California Code of Regulations [CCR]).

Clear signage shall be provided for construction workers at all access points.

7. All construction equipment shall be maintained and properly tuned in accordance with manufacturer’s specifications. All equipment shall be checked by a certified mechanic and determined to be running in proper condition prior to operation.

8. Post a publicly visible sign with the telephone number and person to contact at the Lead Agency regarding dust complaints. This person shall respond and take corrective action within 48 hours. The Air District’s phone number shall also be visible to ensure compliance with applicable regulations.

Effectiveness of Recommended Measure AQ-1
The measures above are consistent with BAAQMD-recommended basic control measures for reducing fugitive particulate matter that are contained in the BAAQMD CEQA Air Quality Guidelines.

Mitigation Measure AQ-2: Use construction equipment that has low diesel particulate matter exhaust to minimize emissions
A feasible plan to reduce emissions such that increased cancer risk and annual PM2.5 concentrations from construction would be reduced below significance levels is as follows:

1. All construction equipment larger than 25 horsepower used at the site for more than two continuous days or 20 hours total shall meet U.S. EPA Tier 4 emission standards for particulate matter (PM10 and PM2.5), if feasible, otherwise, a. If use of Tier 4 equipment is not available, alternatively use equipment that meets U.S. EPA emission standards for Tier 3 engines and include particulate matter emissions control equivalent to CARB Level 3 verifiable diesel emission control devices that altogether achieve a 67 percent reduction in particulate matter exhaust in comparison to uncontrolled equipment; alternatively (or in combination).

16 b. Use of electrical or non-diesel fueled equipment.

Effectiveness of Mitigation Measure AQ-2
CalEEMod was used to compute emissions associated with this mitigation measure assuming that all equipment met U.S. EPA Tier 4 interim engines standards and BAAQMD best management practices for construction were included. With these implemented, the project’s construction cancer risk impact, assuming infant exposure, would be reduced to 1.68 per million. As a result, the project’s construction cancer risk would be reduced below the BAAQMD single-source threshold.

On-Site Community Health Risk Impacts – New Project Residents In addition to evaluating health impact from project construction, a health risk assessment was completed to assess the impact existing TAC sources would have on the new proposed sensitive receptors (residents) that that project would introduce. The same TAC sources identified above were used in this health risk assessment.13
Highways – Mission Street (S.R. 82)
The state route screening analysis for the new project sensitive receptors was conducted in the same manner as described above for the construction MEI. The project site is approximately 850 east of the state route. The community risk impacts from the state route at the project site are shown in Table 6.

Stationary Sources
The stationary source screening analysis for the new project sensitive receptors was conducted in the same manner as described above for the construction MEI. The community risk impacts from the stationary sources at the project site are shown in Table 6.

Combined Community Health Risk at Project Site
Community risk impacts from the existing TAC sources upon the project site are reported in Table

6. The risks from the singular TAC sources are compared against the BAAQMD single-source threshold. The risks from all the sources are then combined and compared against the BAAQMD cumulative-source threshold. As shown, none of the sources exceed the single-source or cumulative-source thresholds.

13 We note that to the extent this analysis considers existing air quality issues in relation to the impact on future residents of the Project, it does so for informational purposes only pursuant to the judicial decisions in CBIA v.

BAAQMD (2015) 62 Cal.4th 369, 386 and Ballona Wetlands Land Trust v. City of Los Angeles (2011) 201 Cal.App.4th 455, 473, which confirm that the impacts of the environment on a project are excluded from CEQA unless the project itself “exacerbates” such impacts.

17 Table 6. Cumulative Community Risk Impacts Upon the On-site Sensitive Receptors Source Cancer Risk
(per million)
Annual PM2.5
(µg/m3)
Hazard
Index
Mission Street (S.R. 82) – Raster Screening Data 5.4 0.18 -- Colma Auto Body Shop Inc (Facility ID #3603, Auto Body
Coating), Project Site 950 feet -- -- <0.01
D&J Auto Body Specialists Inc. (Facility ID #14858, Auto Body Coating), Project Site 990 feet -- -- <0.01
19th Auto Body Center (Facility ID #20658, Auto Body Coating), Project Site 750 feet -- -- <0.01
Hillside Shell (Facility ID #112293, Gas Station), Project Site 210 feet 0.6 -- <0.01
BAAQMD Single-Source Threshold >10.0 >0.3 >1.0
Exceed Threshold? No No No
Cumulative Total 6.0 0.18 <0.04
BAAQMD Cumulative Source Threshold >100 >0.8 >10.0
Exceed Threshold? No No No
Supporting Documentation
Attachment 1 is the methodology used to compute community risk impacts, including the methods to compute lifetime cancer risk from exposure to project emissions.

Attachment 2 includes the CalEEMod output for project construction emissions. Also included are any modeling assumptions.

Attachment 3 includes the EMFAC2017 emissions modeling. The input files for these calculations are voluminous and are available upon request in digital format.

Attachment 4 is the construction health risk assessment. This includes the summary of the dispersion modeling and the cancer risk calculations for construction. AERMOD dispersion modeling files for this assessment, which are quite voluminous, are available upon request and would be provided in digital format
Attachment 5 includes the cumulative community risk calculations, modeling results, and health risk calculations from sources affecting the construction MEI and project site receptors.

Attachment 1: Health Risk Calculation Methodology
A health risk assessment (HRA) for exposure to Toxic Air Contaminates (TACs) requires the application of a risk characterization model to the results from the air dispersion model to estimate potential health risk at each sensitive receptor location. The State of California Office of Environmental Health Hazard Assessment (OEHHA) and California Air Resources Board (CARB) develop recommended methods for conducting health risk assessments. The most recent OEHHA risk assessment guidelines were published in February of 2015.14 These guidelines incorporate substantial changes designed to provide for enhanced protection of children, as required by State law, compared to previous published risk assessment guidelines. CARB has provided additional guidance on implementing OEHHA’s recommended methods.15 This HRA used the 2015 OEHHA risk assessment guidelines and CARB guidance. The BAAQMD has adopted recommended procedures for applying the newest OEHHA guidelines as part of Regulation 2, Rule 5: New Source Review of Toxic Air Contaminants.16 Exposure parameters from the OEHHA guidelines and the recent BAAQMD HRA Guidelines were used in this evaluation.

Cancer Risk
Potential increased cancer risk from inhalation of TACs is calculated based on the TAC concentration over the period of exposure, inhalation dose, the TAC cancer potency factor, and an age sensitivity factor to reflect the greater sensitivity of infants and children to cancer causing TACs. The inhalation dose depends on a person’s breathing rate, exposure time and frequency and duration of exposure. These parameters vary depending on the age, or age range, of the persons being exposed and whether the exposure is considered to occur at a residential location or other sensitive receptor location.

The current OEHHA guidance recommends that cancer risk be calculated by age groups to account for different breathing rates and sensitivity to TACs. Specifically, they recommend evaluating risks for the third trimester of pregnancy to age zero, ages zero to less than two (infant exposure), ages two to less than 16 (child exposure), and ages 16 to 70 (adult exposure). Age sensitivity factors (ASFs) associated with the different types of exposure are an ASF of 10 for the third trimester and infant exposures, an ASF of 3 for a child exposure, and an ASF of 1 for an adult exposure. Also associated with each exposure type are different breathing rates, expressed as liters per kilogram of body weight per day (L/kg-day) or liters per kilogram of body weight per 8-hour period for the case of worker or school child exposures. As recommended by the BAAQMD for residential exposures, 95th percentile breathing rates are used for the third trimester and infant exposures, and 80th percentile breathing rates for child and adult exposures. For children at schools and daycare facilities, BAAQMD recommends using the 95th percentile 8-hour breathing rates.

Additionally, CARB and the BAAQMD recommend the use of a residential exposure duration of 14 OEHHA, 2015. Air Toxics Hot Spots Program Risk Assessment Guidelines, The Air Toxics Hot Spots Program Guidance Manual for Preparation of Health Risk Assessments. Office of Environmental Health Hazard Assessment.

February.
15 CARB, 2015. Risk Management Guidance for Stationary Sources of Air Toxics. July 23. 16 BAAQMD, 2016. BAAQMD Air Toxics NSR Program Health Risk Assessment ( HRA) Guidelines. December 2016.

30 years for sources with long-term emissions (e.g., roadways). For workers, assumed to be adults, a 25-year exposure period is recommended by the BAAQMD. For school children a 9-year exposure period is recommended by the BAAQMD.

Under previous OEHHA and BAAQMD HRA guidance, residential receptors are assumed to be at their home 24 hours a day, or 100 percent of the time. In the 2015 Risk Assessment Guidance, OEHHA includes adjustments to exposure duration to account for the fraction of time at home (FAH), which can be less than 100 percent of the time, based on updated population and activity statistics. The FAH factors are age-specific and are: 0.85 for third trimester of pregnancy to less than 2 years old, 0.72 for ages 2 to less than 16 years, and 0.73 for ages 16 to 70 years. Use of the FAH factors is allowed by the BAAQMD if there are no schools in the project vicinity have a cancer risk of one in a million or greater assuming 100 percent exposure (FAH = 1.0).

Functionally, cancer risk is calculated using the following parameters and formulas:

Cancer Risk (per million) = CPF x Inhalation Dose x ASF x ED/AT x FAH x 106 Where:

CPF = Cancer potency factor (mg/kg-day)-1
ASF = Age sensitivity factor for specified age group
ED = Exposure duration (years)
AT = Averaging time for lifetime cancer risk (years)
FAH = Fraction of time spent at home (unitless)
Inhalation Dose = Cair x DBR* x A x (EF/365) x 10-6
Where:

Cair = concentration in air (μg/m3)
DBR = daily breathing rate (L/kg body weight-day)
8HrBR = 8-hour breathing rate (L/kg body weight-8 hours) A = Inhalation absorption factor
EF = Exposure frequency (days/year)
10-6 = Conversion factor
The health risk parameters used in this evaluation are summarized as follows:

Exposure Type  Infant Child Adult
Parameter Age Range  3rd
Trimester
0<2 2 < 16 16 - 30
DPM Cancer Potency Factor (mg/kg-day)-1 1.10E+00 1.10E+00 1.10E+00 1.10E+00 Daily Breathing Rate (L/kg-day) 80th Percentile Rate 273 758 572 261 Daily Breathing Rate (L/kg-day) 95th Percentile Rate 361 1,090 745 335 8-hour Breathing Rate (L/kg-8 hours) 95th Percentile Rate - 1,200 520 240 Inhalation Absorption Factor 1 1 1 1
Averaging Time (years) 70 70 70 70
Exposure Duration (years) 0.25 2 14 14*
Exposure Frequency (days/year) 350 350 350 350*
Age Sensitivity Factor 10 10 3 1
Fraction of Time at Home (FAH) 0.85-1.0 0.85-1.0 0.72-1.0 0.73* * An 8-hour breathing rate (8HrBR) is used for worker and school child exposures.

Non-Cancer Hazards
Non-cancer health risk is usually determined by comparing the predicted level of exposure to a chemical to the level of exposure that is not expected to cause any adverse effects (reference exposure level), even to the most susceptible people. Potential non-cancer health hazards from TAC exposure are expressed in terms of a hazard index (HI), which is the ratio of the TAC concentration to a reference exposure level (REL). OEHHA has defined acceptable concentration levels for contaminants that pose non-cancer health hazards. TAC concentrations below the REL are not expected to cause adverse health impacts, even for sensitive individuals. The total HI is calculated as the sum of the HIs for each TAC evaluated and the total HI is compared to the BAAQMD significance thresholds to determine whether a significant non-cancer health impact from a project would occur.

Typically, for residential projects located near roadways with substantial TAC emissions, the primary TAC of concern with non-cancer health effects is diesel particulate matter (DPM). For DPM, the chronic inhalation REL is 5 micrograms per cubic meter (μg/m3).

Annual PM2.5 Concentrations
While not a TAC, fine particulate matter (PM2.5) has been identified by the BAAQMD as a pollutant with potential non-cancer health effects that should be included when evaluating potential community health impacts under the California Environmental Quality Act (CEQA). The thresholds of significance for PM2.5 (project level and cumulative) are in terms of an increase in the annual average concentration. When considering PM2.5 impacts, the contribution from all sources of PM2.5 emissions should be included. For projects with potential impacts from nearby local roadways, the PM2.5 impacts should include those from vehicle exhaust emissions, PM2.5 generated from vehicle tire and brake wear, and fugitive emissions from re-suspended dust on the roads.

Attachment 2: CalEEMod Modeling Inputs and Outputs

Air Quality/Noise Construction Information Data Request Project N 141 3rd Ave
See Equipment Type TAB for type, horsepower and load factor Project Size 15 Dwelling Units 0.68 total project acres disturbed 33,675 s.f. residential N
N/A s.f. retail
N/A s.f. office/commercial Project include OPERATIONAL GENERATOR OR FIRE PUMP on-site? Y/N? s.f. other, specify: IF YES (if BOTH separate values) --> 2245 s.f. parking garage 30 spaces Kilowatts/Horsepower:

N/A s.f. parking lot spaces Fuel Type:

Construction Hours 7:00 am to 6:00 pm
Location in project (Plans Desired if Available):

DO NOT MULTIPLY EQUIPMENT HOURS/DAY BY THE QUANTITY OF EQUIPMENT Quantity Description HP Load Factor Hours/day
Total
Work
Days
Avg.

Hours per
day
Annual
Hours Comments
Demolition Start Date: 9/1/2021 Total phase: 14 Overall Import/Export Volumes End Date: 9/15/2021
1 Concrete/Industrial Saws 81 0.73 8 14 8 112 Demolition Volume Excavators 158 0.38 0 0 Square footage of buildings to be demolished 1 Rubber-Tired Dozers 247 0.4 1 14 1 14 (or total tons to be hauled) 2 Tractors/Loaders/Backhoes 97 0.37 6 14 6 168 __?__ square feet or Lot has no existing building _?_ Hauling volume (tons) NA
no
Site Preparation Start Date: 9/15/2021 Total phase: 30
End Date: 10/15/2021
1 Graders 187 0.41 8 30 8 240
Rubber Tired Dozers 247 0.4 0 0
1 Tractors/Loaders/Backhoes 97 0.37 8 30 8 240
Grading / Excavation  Start Date: 10/16/2021 Total phase: 30 End Date: 11/15/2021 Soil Hauling Volume
Excavators 158 0.38 0 0 Export volume = ? cubic yards? 200 cubic yards Graders 187 0.41 0 0 Import volume = ? cubic yards? 400 yards from correspondence word doc 1 Rubber Tired Dozers 247 0.4 1 30 1 30
1 Concrete/Industrial Saws 81 0.73 8 30 8 240
2 Tractors/Loaders/Backhoes 97 0.37 6 30 6 360
Other Equipment?
Trenching/Foundation Start Date: 11/16/2021 Total phase: 60 End Date: 1/15/2022
1 Tractor/Loader/Backhoe 97 0.37 8 60 8 480
1 Excavators 158 0.38 8 60 8 480
Other Equipment?
Building - Exterior Start Date: 12/15/2021 Total phase: 151 Cement Trucks? _?_ Total Round-Trips 115 loads End Date: 5/15/2022
1 Cranes 231 0.29 4 151 4 604 Electric? (Y/N) _N_ Otherwise assumed diesel yes- electric 2 Forklifts 89 0.2 6 151 6 1812 Liquid Propane (LPG)? (Y/N) no Generator Sets 84 0.74 0 0 Or temporary line power? (Y/N) yes 2 Tractors/Loaders/Backhoes 97 0.37 8 151 8 2416
Welders 46 0.45 0 0
Other Equipment? 0
Building - Interior/Architectural Coating Start Date: 3/15/2022 Total phase: 92 End Date: 6/15/2022
1 Air Compressors 78 0.48 6 92 6 552
Aerial Lift 62 0.31 0 0
Other Equipment?
Paving  Start Date: 12/8/2021 Total phase: 2
Start Date: 12/10/2021
4 Cement and Mortar Mixers 9 0.56 6 2 6 48
1 Pavers 130 0.42 7 2 7 14
Paving Equipment 132 0.36 0 0
1 Rollers 80 0.38 7 2 7 14
1 Tractors/Loaders/Backhoes 97 0.37 7 2 7 14
Other Equipment?
Additional Phases Start Date: Total phase:

Start Date:

Equipment types listed in "Equipment Types" worksheet tab.

Equipment listed in this sheet is to provide an example of inputs Complete one sheet for each project component It is assumed that water trucks would be used during grading Add or subtract phases and equipment, as appropriate
Modify horepower or load factor, as appropriate
Complete ALL Portions in Yellow
Asphalt? _150tons __ cubic yards or __8__ round trips?

Off-road Equipment -
Off-road Equipment - Off-road Equipment - Off-road Equipment - Off-road Equipment -

1.3 User Entered Comments & Non-Default Data
Project Characteristics - PG&E Intensity Rate = 210 (Year 2017)Land Use - Square footage provided by clientConstruction Phase - Construction schedule provided by client. Default equipment and hours.Off-road Equipment - Off-road Equipment - CO2 Intensity (lb/MWhr)
210 CH4 Intensity
(lb/MWhr)

0.029 N2O Intensity
(lb/MWhr)

0.006
70 Climate Zone 5 Operational Year 2023
Utility Company Pacific Gas & Electric Company

1.2 Other Project Characteristics
Urbanization Urban Wind Speed (m/s) 2.2 Precipitation Freq (Days) Enclosed Parking Structure 30.00 Space 0.00 2,245.00 0
Floor Surface Area Population
Condo/Townhouse 15.00 Dwelling Unit 0.68 33,675.00 43

1.0 Project Characteristics

1.1 Land Usage
Land Uses Size Metric Lot Acreage
CalEEMod Version: CalEEMod.2016.3.1 Page 1 of 1 Date: 1/26/2021 6:40 AM 141 3rd Ave Townhome Construction - San Mateo County, Annual 141 3rd Ave Townhome Construction
San Mateo County, Annual

tblConstEquipMitigation Tier No Change Tier 4 Interim
tblConstEquipMitigation Tier No Change Tier 4 InterimtblConstEquipMitigation Tier No Change Tier 4 InterimtblConstEquipMitigation Tier No Change Tier 4 InterimtblConstEquipMitigation Tier No Change Tier 4 InterimtblConstEquipMitigation Tier No Change Tier 4 InterimtblConstEquipMitigation Tier No Change Tier 4 InterimtblConstEquipMitigation Tier No Change Tier 4 InterimtblConstEquipMitigation Tier No Change Tier 4 InterimtblConstEquipMitigation Tier No Change Tier 4 InterimtblConstEquipMitigation NumberOfEquipmentMitigated 0.00 1.00tblConstEquipMitigation Tier No Change Tier 4 InterimtblConstEquipMitigation NumberOfEquipmentMitigated 0.00 2.00tblConstEquipMitigation NumberOfEquipmentMitigated 0.00 9.00tblConstEquipMitigation NumberOfEquipmentMitigated 0.00 1.00tblConstEquipMitigation NumberOfEquipmentMitigated 0.00 1.00tblConstEquipMitigation NumberOfEquipmentMitigated 0.00 2.00tblConstEquipMitigation NumberOfEquipmentMitigated 0.00 1.00tblConstEquipMitigation NumberOfEquipmentMitigated 0.00 2.00tblConstEquipMitigation NumberOfEquipmentMitigated 0.00 1.00tblConstEquipMitigation NumberOfEquipmentMitigated 0.00 1.00tblConstEquipMitigation NumberOfEquipmentMitigated 0.00 4.00 tblArchitecturalCoating ConstArea_Residential_Interior 68,192.00 33,675.00 tblConstDustMitigation WaterUnpavedRoadVehicleSpeed 40 15 Grading - Construction worksheet and correspondence data. Grading = 400 cubic yards imported, 200 cubic yards exported.Demolition - Existing building demo. Google Earth est. 1200 sqftTrips and VMT - Trips copied to EMFACArchitectural Coating - Square footage provided in site planConstruction Off-road Equipment Mitigation - All equipment greater than 50hp T4i. Water and vehicle speed at default.

Table Name Column Name Default Value New Value
Off-road Equipment - Construction equipment and hours default. Assumed 1 excavator and 1 tractor, 8 hrs/day for trenching.

tblTripsAndVMT HaulingTripNumber 5.00 0.00
tblProjectCharacteristics CO2IntensityFactor 641.35 210tblProjectCharacteristics OperationalYear 2018 2023 tblOffRoadEquipment OffRoadEquipmentType Tractors/Loaders/Backhoes tblOffRoadEquipment OffRoadEquipmentType ExcavatorstblOffRoadEquipment LoadFactor 0.37 0.37tblOffRoadEquipment LoadFactor 0.38 0.38 tblLandUse LotAcreage 0.94 0.68tblLandUse LotAcreage 0.27 0.00tblLandUse LandUseSquareFeet 15,000.00 33,675.00tblLandUse LandUseSquareFeet 12,000.00 2,245.00tblLandUse BuildingSpaceSquareFeet 15,000.00 33,675.00tblLandUse BuildingSpaceSquareFeet 12,000.00 2,245.00 tblGrading MaterialExported 0.00 200.00tblGrading MaterialImported 0.00 400.00 tblConstructionPhase PhaseStartDate 9/16/2021 10/16/2021tblConstructionPhase PhaseStartDate 2/5/2022 12/8/2021tblConstructionPhase PhaseStartDate 2/12/2022 3/15/2022tblConstructionPhase PhaseStartDate 9/18/2021 12/15/2021tblConstructionPhase PhaseEndDate 2/11/2022 12/10/2021tblConstructionPhase PhaseEndDate 9/15/2021 10/15/2021tblConstructionPhase PhaseEndDate 9/14/2021 9/15/2021tblConstructionPhase PhaseEndDate 9/17/2021 11/15/2021tblConstructionPhase PhaseEndDate 2/18/2022 6/15/2022tblConstructionPhase PhaseEndDate 2/4/2022 5/15/2022tblConstructionPhase NumDays 5.00 3.00tblConstructionPhase NumDays 1.00 23.00tblConstructionPhase NumDays 10.00 11.00tblConstructionPhase NumDays 2.00 21.00tblConstructionPhase NumDays 5.00 67.00tblConstructionPhase NumDays 100.00 108.00

Total CO2 CH4 N2O CO2e
Year tons/yr MT/yr
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2
Mitigated Construction
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10

0.0146 0.0213 0.0317 5.1000e- 0.0000 59.7638 59.7638 0.0171 0.0000 60.1918 003
Maximum 0.1988 0.3982 0.4280 6.8000e- 0.0198 0.0210
004
2022 0.1988 0.3982 0.4280 6.8000e- 0.0000 0.0213 0.0213 0.0000 0.0198 0.0198 0.0000 59.7638 59.7638 0.0171 0.0000 60.1918 004

0.0146 0.0171 0.0317 5.1000e- 0.0000 46.7771 46.7771 0.0128 0.0000 47.0971 003
2021 0.0333 0.3369 0.3194 5.4000e- 0.0159 0.0210
004
NBio- CO2 Total CO2 CH4 N2O CO2e
Year tons/yr MT/yr
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2

2.0 Emissions Summary

2.1 Overall Construction
Unmitigated Construction
ROG NOx CO SO2 Fugitive
PM10
tblTripsAndVMT WorkerTripNumber 5.00 0.00tblTripsAndVMT WorkerTripNumber 5.00 0.00tblTripsAndVMT WorkerTripNumber 10.00 0.00tblTripsAndVMT WorkerTripNumber 18.00 0.00tblTripsAndVMT WorkerTripNumber 12.00 0.00tblTripsAndVMT WorkerTripNumber 10.00 0.00tblTripsAndVMT VendorTripNumber 2.00 0.00tblTripsAndVMT WorkerTripNumber 2.00 0.00tblTripsAndVMT HaulingTripNumber 75.00 0.00

2.3946 101.2593 103.6539 0.1201 1.4800e003 0.0726 9.6000e- 107.1002 003 0.0822 0.0195 9.5600e- 003 Total 0.2144 0.0740 0.3784 9.7000e- 0.0291 004

0.3101 0.7091 1.0192 0.0319 7.7000e004 Water 0.0000 0.0000 0.0000 0.0000 2.0479 Waste 0.0000 0.0000 0.0000 0.0000 1.4006 0.0000 1.4006 0.0828 0.0000 3.4700

0.0000 68.5894 68.5894 2.4500e003 0.0726 6.0000e- 0.0000 68.6508 004 0.0732 0.0195 5.6000e- 004 Mobile 0.0187 0.0525 0.2108 7.5000e- 0.0201 0040.0000 31.4974 31.4974 1.6800e003 6.7000e- 004 1.5700e- 31.7390 003 1.5700e- 003 1.5700e- 003 1.5700e- 003 Energy 2.2700e- 003 0.0194 8.2500e- 003 1.2000e- 0040.6839 0.4634 1.1472 1.2800e003 4.0000e- 005 7.4300e- 1.1925 003 7.4300e- 003 7.4300e- 003 7.4300e- 003 Area 0.1934 2.0800e- 003 0.1593 1.0000e- 004 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2

2.2 Overall Operational
Unmitigated Operational
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
4 6-1-2022 8-31-2022 0.0338 0.0312
Highest 0.3853 0.2901
2 12-1-2021 2-28-2022 0.2923 0.19313 3-1-2022 5-31-2022 0.3853 0.2901 Quarter Start Date End Date Maximum Unmitigated ROG + NOX (tons/quarter) Maximum Mitigated ROG + NOX (tons/quarter) 1 9-1-2021 11-30-2021 0.2499 0.1350

55.02 94.97 83.94 55.10 94.60 89.67 0.00 0.00 0.00 0.00 0.00 0.00 NBio-CO2 Total CO2 CH4 N20 CO2e
Percent
Reduction

21.93 35.82 -11.58 0.00
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
ROG NOx CO SO2 Fugitive Bio- CO2
PM10

6.5800e- 0.0000 59.7637 59.7637 0.0171 0.0000 60.1917
003

1.0900e003 7.4200e- 003 2.2900e- 003 1.0900e- 003 3.1300e- 003 Maximum 0.1713 0.2664 0.4710 6.8000e- 004

0.0000 1.0900e- 0.0000 59.7637 59.7637 0.0171 0.0000 60.1917 003

1.0900e003 0.0000 1.0900e- 003 1.0900e- 003 2022 0.1713 0.2664 0.4710 6.8000e- 004

6.5800e- 0.0000 46.7770 46.7770 0.0128 0.0000 47.0971
003

8.4000e004 7.4200e- 003 2.2900e- 003 8.4000e- 004 3.1300e- 003 2021 9.8900e- 003 0.2053 0.3631 5.4000e- 004

44 Acres of Grading (Site Preparation Phase): 11.5
7 Trenching Trenching 11/16/2021 1/14/2022 5
3 6 Architectural Coating Architectural Coating 3/15/2022 6/15/2022 5 675 Paving Paving 12/8/2021 12/10/2021 5 21 4 Building Construction Building Construction 12/15/2021 5/15/2022 5 1083 Grading Grading 10/16/2021 11/15/2021 5 11 2 Site Preparation Site Preparation 9/15/2021 10/15/2021 5 23 End Date Num Days
Week
Num Days Phase Description
1 Demolition Demolition 9/1/2021 9/15/2021 5

3.0 Construction Detail
Construction Phase
Phase
Number
Phase Name Phase Type Start Date

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 NBio-CO2 Total
CO2
CH4 N20 CO2e
Percent
Reduction

0.00 0.00 0.00 0.00
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
ROG NOx CO SO2 Fugitive Bio- CO2
PM10

2.3946 101.2593 103.6539 0.1201 1.4800e003 0.0726 9.6000e- 107.1002 003 0.0822 0.0195 9.5600e- 003 Total 0.2144 0.0740 0.3784 9.7000e- 0.0291 004

0.3101 0.7091 1.0192 0.0319 7.7000e004 Water 0.0000 0.0000 0.0000 0.0000 2.0479 Waste 0.0000 0.0000 0.0000 0.0000 1.4006 0.0000 1.4006 0.0828 0.0000 3.4700

0.0000 68.5894 68.5894 2.4500e003 0.0726 6.0000e- 0.0000 68.6508 004 0.0732 0.0195 5.6000e- 004 Mobile 0.0187 0.0525 0.2108 7.5000e- 0.0201 0040.0000 31.4974 31.4974 1.6800e003 6.7000e- 004 1.5700e- 31.7390 003 1.5700e- 003 1.5700e- 003 1.5700e- 003 Energy 2.2700e- 003 0.0194 8.2500e- 003 1.2000e- 0040.6839 0.4634 1.1472 1.2800e003 4.0000e- 005 7.4300e- 1.1925 003 7.4300e- 003 7.4300e- 003 7.4300e- 003 Area 0.1934 2.0800e- 003 0.1593 1.0000e- 004 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2
Mitigated Operational
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10

10.80 7.30 20.00 LD_Mix HDT_Mix HHDT

7.30 20.00 LD_Mix HDT_Mix HHDT
Building Construction 5 0.00 0.00 0.00Architectural Coating 1 0.00 0.00 0.00 10.80 Worker Trip
Length
Vendor Trip
Length
Hauling Trip
Length
Worker Vehicle
Class
Vendor
Vehicle
Class
Hauling
Vehicle
Class
Trips and VMT
Phase Name Offroad Equipment
Count
Worker Trip
Number
Vendor Trip
Number
Hauling Trip
Number
Trenching Excavators 1 8.00 158 0.38Trenching Tractors/Loaders/Backhoes 1 8.00 97 0.37Site Preparation Tractors/Loaders/Backhoes 1 8.00 97 0.37Paving Tractors/Loaders/Backhoes 1 7.00 97 0.37Grading Tractors/Loaders/Backhoes 2 6.00 97 0.37Demolition Tractors/Loaders/Backhoes 2 6.00 97 0.37Building Construction Tractors/Loaders/Backhoes 2 8.00 97 0.37Grading Rubber Tired Dozers 1 1.00 247 0.40Demolition Rubber Tired Dozers 1 1.00 247 0.40Paving Rollers 1 7.00 80 0.38Paving Pavers 1 7.00 130 0.42Site Preparation Graders 1 8.00 187 0.41Building Construction Forklifts 2 6.00 89 0.20Building Construction Cranes 1 4.00 231 0.29Grading Concrete/Industrial Saws 1 8.00 81 0.73Demolition Concrete/Industrial Saws 1 8.00 81 0.73Paving Cement and Mortar Mixers 4 6.00 9 0.56 Load Factor
Architectural Coating Air Compressors 1 6.00 78 0.48
OffRoad Equipment
Phase Name Offroad Equipment Type Amount Usage Hours Horse Power Acres of Grading (Grading Phase): 0Acres of Paving: 0
Residential Indoor: 33,675; Residential Outdoor: 22,731; Non-Residential Indoor: 0; Non-Residential Outdoor: 0; Striped Parking Area:

CO2e
Category tons/yr MT/yr
PM2.5
Total
SO2 Fugitive Bio- CO2 NBio- CO2 Total CO2 CH4 N2O
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5

1.0700e003 0.0000 5.7518
Unmitigated Construction Off-Site
ROG NOx CO

9.0000e005 2.1400e- 003 2.2300e- 003 0.0000 5.7251 5.7251

5.7518
Total 4.3800e003 0.0399 0.0416 7.0000e- 005 5.9000e- 004 2.2400e- 003 2.8300e- 003

2.1400e003 0.0000 5.7251 5.7251 1.0700e- 003 7.0000e- 0.0000 005 2.2400e- 003 2.2400e- 003 2.1400e- 003

0.0000 0.0000 0.0000 0.0000 0.0000
Off-Road 4.3800e003 0.0399 0.0416

0.0000 5.9000e004 9.0000e- 005 0.0000 9.0000e- 005 0.0000 Category tons/yr MT/yr
Fugitive Dust 5.9000e004
Fugitive Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
ROG NOx CO SO2
Use Cleaner Engines for Construction EquipmentWater Exposed AreaReduce Vehicle Speed on Unpaved RoadsClean Paved Roads

3.2 Demolition - 2021
Unmitigated Construction On-Site

7.30 20.00 LD_Mix HDT_Mix HHDT

3.1 Mitigation Measures Construction
Trenching 2 0.00 0.00 0.00 10.80

10.80 7.30 20.00 LD_Mix HDT_Mix HHDT

7.30 20.00 LD_Mix HDT_Mix HHDT
Site Preparation 2 0.00 0.00 0.00Paving 7 0.00 0.00 0.00 10.80

10.80 7.30 20.00 LD_Mix HDT_Mix HHDT

7.30 20.00 LD_Mix HDT_Mix HHDT
Grading 4 0.00 0.00 0.00Demolition 4 0.00 0.00 0.00 10.80

Total 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2
Mitigated Construction Off-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10

0.0000 5.7251 5.7251 1.0700e003 2.7000e- 0.0000 5.7518 004 1.0000e- 004 3.7000e- 004 4.0000e- 005 1.0000e- 004 1.4000e- 004 Total 1.3000e- 003 0.0250 0.0437 7.0000e- 005

0.0000 5.7251 5.7251 1.0700e003 1.0000e- 0.0000 5.7518 004 1.0000e- 004 1.0000e- 004 1.0000e- 004 Off-Road 1.3000e- 003 0.0250 0.0437 7.0000e- 005

2.7000e- 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
004

0.0000 2.7000e004 4.0000e- 005 0.0000 4.0000e- 005 Fugitive Dust Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2
Mitigated Construction On-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
Total 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

PM10 Total CO2 CH4 N2O CO2e
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2
Mitigated Construction On-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
Total 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2
Unmitigated Construction Off-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10

0.0000 9.8336 9.8336 3.1800e003 6.1000e- 0.0000 9.9131 003 3.4400e- 003 9.5400e- 003 6.6000e- 004 3.1700e- 003 3.8300e- 003 Total 7.3600e- 003 0.0899 0.0463 1.1000e- 004

0.0000 9.8336 9.8336 3.1800e003 3.4400e- 0.0000 9.9131 003 3.4400e- 003 3.1700e- 003 3.1700e- 003 Off-Road 7.3600e- 003 0.0899 0.0463 1.1000e- 004

6.1000e- 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
003

0.0000 6.1000e003 6.6000e- 004 0.0000 6.6000e- 004 Fugitive Dust Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2

3.3 Site Preparation - 2021
Unmitigated Construction On-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10

0.0000 10.9298 10.9298 2.0400e003 7.9400e- 0.0000 10.9807 003 4.2800e- 003 0.0122 4.3500e- 003 4.0800e- 003 8.4300e- 003 Total 8.3600e- 003 0.0762 0.0795 1.3000e- 004

0.0000 10.9298 10.9298 2.0400e003 4.2800e- 0.0000 10.9807 003 4.2800e- 003 4.0800e- 003 4.0800e- 003 Off-Road 8.3600e- 003 0.0762 0.0795 1.3000e- 004

7.9400e- 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
003

0.0000 7.9400e003 4.3500e- 003 0.0000 4.3500e- 003 Fugitive Dust Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2

3.4 Grading - 2021
Unmitigated Construction On-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
Total 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2
Mitigated Construction Off-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10

0.0000 9.8336 9.8336 3.1800e003 2.7400e- 0.0000 9.9131 003 1.8000e- 004 2.9200e- 003 3.0000e- 004 1.8000e- 004 4.8000e- 004 Total 2.0400e- 003 0.0356 0.0674 1.1000e- 004

0.0000 9.8336 9.8336 3.1800e003 1.8000e- 0.0000 9.9131 004 1.8000e- 004 1.8000e- 004 1.8000e- 004 Off-Road 2.0400e- 003 0.0356 0.0674 1.1000e- 004

2.7400e- 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
003

0.0000 2.7400e003 3.0000e- 004 0.0000 3.0000e- 004 Fugitive Dust Category tons/yr MT/yr

PM10 Total CO2 CH4 N2O CO2e
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2
Mitigated Construction Off-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10

0.0000 10.9298 10.9298 2.0400e003 3.5700e- 0.0000 10.9807 003 1.9000e- 004 3.7600e- 003 1.9600e- 003 1.9000e- 004 2.1500e- 003 Total 2.4800e- 003 0.0477 0.0834 1.3000e- 004

0.0000 10.9298 10.9298 2.0400e003 1.9000e- 0.0000 10.9807 004 1.9000e- 004 1.9000e- 004 1.9000e- 004 Off-Road 2.4800e- 003 0.0477 0.0834 1.3000e- 004

3.5700e- 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
003

0.0000 3.5700e003 1.9600e- 003 0.0000 1.9600e- 003 Fugitive Dust Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2
Mitigated Construction On-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
Total 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2
Unmitigated Construction Off-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10

Worker 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2
Unmitigated Construction Off-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10

0.0000 6.5053 6.5053 2.1000e003 2.9100e- 0.0000 6.5579 003 2.9100e- 003 2.6800e- 003 2.6800e- 003 Total 5.0400e- 003 0.0519 0.0472 7.0000e- 0050.0000 6.5053 6.5053 2.1000e003 2.9100e- 0.0000 6.5579 003 2.9100e- 003 2.6800e- 003 2.6800e- 003 Off-Road 5.0400e- 003 0.0519 0.0472 7.0000e- 005 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2

3.5 Building Construction - 2021
Unmitigated Construction On-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
Total 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Category tons/yr MT/yr

3.5 Building Construction - 2022
Unmitigated Construction On-Site
Total 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2
Mitigated Construction Off-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10

0.0000 6.5053 6.5053 2.1000e003 1.2000e- 0.0000 6.5579 004 1.2000e- 004 1.2000e- 004 1.2000e- 004 Total 1.5500e- 003 0.0291 0.0518 7.0000e- 0050.0000 6.5053 6.5053 2.1000e003 1.2000e- 0.0000 6.5579 004 1.2000e- 004 1.2000e- 004 1.2000e- 004 Off-Road 1.5500e- 003 0.0291 0.0518 7.0000e- 005 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2
Mitigated Construction On-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
Total 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

8.8000e- 0.0000 47.5701 47.5701 0.0154 0.0000 47.9547
004

8.8000e004 8.8000e- 004 8.8000e- 004 Total 0.0113 0.2128 0.3782 5.4000e- 004

8.8000e- 0.0000 47.5701 47.5701 0.0154 0.0000 47.9547
004

8.8000e004 8.8000e- 004 8.8000e- 004 Off-Road 0.0113 0.2128 0.3782 5.4000e- 004 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2
Mitigated Construction On-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
Total 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2
Unmitigated Construction Off-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
Total 0.0326 0.3337 0.3398 5.4000e- 0.0177 0.0177 0.0163 0.0163 0.0000 47.5702 47.5702 0.0154 0.0000 47.9548 004
Off-Road 0.0326 0.3337 0.3398 5.4000e- 0.0177 0.0177 0.0163 0.0163 0.0000 47.5702 47.5702 0.0154 0.0000 47.9548 004
Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
ROG NOx CO SO2 Fugitive Bio- CO2 NBio- CO2
PM10
Exhaust
PM10

Unmitigated Construction Off-Site

0.0000 1.4089 1.4089 4.1000e004 5.3000e- 0.0000 1.4191 004 5.3000e- 004 4.9000e- 004 4.9000e- 004 Total 1.0800e- 003 0.0101 0.0106 2.0000e- 005 Paving 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

0.0000 1.4089 1.4089 4.1000e004 5.3000e- 0.0000 1.4191 004 5.3000e- 004 4.9000e- 004 4.9000e- 004 Off-Road 1.0800e- 003 0.0101 0.0106 2.0000e- 005 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2

3.6 Paving - 2021
Unmitigated Construction On-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
Total 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2
Mitigated Construction Off-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10

Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2
Mitigated Construction Off-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10

0.0000 1.4089 1.4089 4.1000e004 2.0000e- 0.0000 1.4191 005 2.0000e- 005 2.0000e- 005 2.0000e- 005 Total 2.4000e- 004 6.0000e- 003 0.0104 2.0000e- 005 Paving 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

0.0000 1.4089 1.4089 4.1000e004 2.0000e- 0.0000 1.4191 005 2.0000e- 005 2.0000e- 005 2.0000e- 005 Off-Road 2.4000e- 004 6.0000e- 003 0.0104 2.0000e- 005 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2
Mitigated Construction On-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
Total 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
ROG NOx CO SO2 Fugitive Bio- CO2 NBio- CO2
PM10
Exhaust
PM10

Mitigated Construction On-Site
Total 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2
Unmitigated Construction Off-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10

0.0000 8.5534 8.5534 5.6000e004 2.7400e- 0.0000 8.5673 003 2.7400e- 003 2.7400e- 003 2.7400e- 003 Total 0.1644 0.0472 0.0608 1.0000e- 0040.0000 8.5534 8.5534 5.6000e004 2.7400e- 0.0000 8.5673 003 2.7400e- 003 2.7400e- 003 2.7400e- 003 Off-Road 6.8500e- 003 0.0472 0.0608 1.0000e- 004 Archit. Coating 0.1575 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2

3.7 Architectural Coating - 2022
Unmitigated Construction On-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
Total 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

0.0000 12.3743 12.3743 4.0000e003 3.6800e- 0.0000 12.4744 003 3.6800e- 003 3.3800e- 003 3.3800e- 003 Off-Road 7.0900e- 003 0.0689 0.0942 1.4000e- 004 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2

3.8 Trenching - 2021
Unmitigated Construction On-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
Total 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2
Mitigated Construction Off-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10

0.0000 8.5534 8.5534 5.6000e004 1.3000e- 0.0000 8.5673 004 1.3000e- 004 1.3000e- 004 1.3000e- 004 Total 0.1594 0.0355 0.0614 1.0000e- 0040.0000 8.5534 8.5534 5.6000e004 1.3000e- 0.0000 8.5673 004 1.3000e- 004 1.3000e- 004 1.3000e- 004 Off-Road 1.8200e- 003 0.0355 0.0614 1.0000e- 004 Archit. Coating 0.1575 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
ROG NOx CO SO2 Fugitive Bio- CO2 NBio- CO2
PM10
Exhaust
PM10

Mitigated Construction Off-Site

0.0000 12.3743 12.3743 4.0000e003 2.3000e- 0.0000 12.4744 004 2.3000e- 004 2.3000e- 004 2.3000e- 004 Total 2.2600e- 003 0.0618 0.1066 1.4000e- 0040.0000 12.3743 12.3743 4.0000e003 2.3000e- 0.0000 12.4744 004 2.3000e- 004 2.3000e- 004 2.3000e- 004 Off-Road 2.2600e- 003 0.0618 0.1066 1.4000e- 004 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2
Mitigated Construction On-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
Total 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2
Unmitigated Construction Off-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10

0.0000 12.3743 12.3743 4.0000e003 3.6800e- 0.0000 12.4744 003 3.6800e- 003 3.3800e- 003 3.3800e- 003 Total 7.0900e- 003 0.0689 0.0942 1.4000e- 004

Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2
Unmitigated Construction Off-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10

0.0000 3.6402 3.6402 1.1800e003 8.8000e- 0.0000 3.6697 004 8.8000e- 004 8.1000e- 004 8.1000e- 004 Total 1.8400e- 003 0.0173 0.0275 4.0000e- 0050.0000 3.6402 3.6402 1.1800e003 8.8000e- 0.0000 3.6697 004 8.8000e- 004 8.1000e- 004 8.1000e- 004 Off-Road 1.8400e- 003 0.0173 0.0275 4.0000e- 005 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2

3.8 Trenching - 2022
Unmitigated Construction On-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
Total 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
ROG NOx CO SO2 Fugitive Bio- CO2 NBio- CO2
PM10
Exhaust
PM10

4.0 Operational Detail - Mobile
Total 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2
Mitigated Construction Off-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10

0.0000 3.6402 3.6402 1.1800e003 7.0000e- 0.0000 3.6697 005 7.0000e- 005 7.0000e- 005 7.0000e- 005 Total 6.7000e- 004 0.0182 0.0314 4.0000e- 0050.0000 3.6402 3.6402 1.1800e003 7.0000e- 0.0000 3.6697 005 7.0000e- 005 7.0000e- 005 7.0000e- 005 Off-Road 6.7000e- 004 0.0182 0.0314 4.0000e- 005 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2
Mitigated Construction On-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
Total 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

0.000488 0.000793

5.0 Energy Detail
Enclosed Parking Structure 0.470625 0.050338 0.265549 0.140745 0.017339 0.006996 0.024054 0.006595 0.004215 0.003104 0.009159

0.006595 0.004215 0.003104 0.009159 0.000488 0.000793

SBUS MH
Condo/Townhouse 0.470625 0.050338 0.265549 0.140745 0.017339 0.006996 0.024054 Land Use LDA LDT1 LDT2 MDV LHD1 LHD2 MHD HHD OBUS UBUS MCY

0.00 0.00 0 0 0

4.4 Fleet Mix

15.00 54.00 86 11 3
Enclosed Parking Structure 9.50 7.30 7.30 0.00
H-S or C-C H-O or C-NW Primary Diverted Pass-by
Condo/Townhouse 10.80 4.80 5.70 31.00

4.3 Trip Type Information
Miles Trip % Trip Purpose %
Land Use H-W or C-W H-S or C-C H-O or C-NW H-W or CW
Total 87.15 85.05 72.60 195,789 195,789
Enclosed Parking Structure 0.00 0.00 0.00
Annual VMT
Condo/Townhouse 87.15 85.05 72.60 195,789 195,789

4.2 Trip Summary Information
Average Daily Trip Rate Unmitigated Mitigated
Land Use Weekday Saturday Sunday Annual VMT

0.0000 68.5894 68.5894 2.4500e003 0.0726 6.0000e- 0.0000 68.6508 004 0.0732 0.0195 5.6000e- 004 Unmitigated 0.0187 0.0525 0.2108 7.5000e- 0.0201 004

0.0000 68.5894 68.5894 2.4500e003 0.0726 6.0000e- 0.0000 68.6508 004 0.0732 0.0195 5.6000e- 004 Mitigated 0.0187 0.0525 0.2108 7.5000e- 0.0201 004 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2

4.1 Mitigation Measures Mobile
ROG NOx CO SO2 Fugitive
PM10

22.5970
Mitigated

1.5700e003 0.0000 22.4635 22.4635 4.3000e- 004 4.1000e- 004 1.2000e- 004 1.5700e- 003 1.5700e- 003 1.5700e- 003

0.0000 0.0000 0.0000 0.0000
Total 2.2700e003 0.0194 8.2500e- 003

0.0000 0.0000 0.0000 0.0000 0.0000

22.5970
Enclosed Parking
Structure
0 0.0000 0.0000 0.0000 0.0000 0.0000

1.5700e003 0.0000 22.4635 22.4635 4.3000e- 004 4.1000e- 004 1.2000e- 004 1.5700e- 003 1.5700e- 003 1.5700e- 003 Condo/Townhous e 420950 2.2700e- 003 0.0194 8.2500e- 003 NBio- CO2 Total CO2 CH4 N2O CO2e
Land Use kBTU/yr tons/yr MT/yr
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2

5.2 Energy by Land Use - NaturalGas
Unmitigated
NaturalGa
s Use
ROG NOx CO SO2 Fugitive
PM10

0.0000 22.4635 22.4635 4.3000e004 4.1000e- 004 1.5700e- 22.5970 003 1.5700e- 003 1.5700e- 003 1.5700e- 003 NaturalGas Unmitigated 2.2700e- 003 0.0194 8.2500e- 003 1.2000e- 004

0.0000 22.4635 22.4635 4.3000e004 4.1000e- 004 1.5700e- 22.5970 003 1.5700e- 003 1.5700e- 003 1.5700e- 003 NaturalGas Mitigated 2.2700e- 003 0.0194 8.2500e- 003 1.2000e- 004

0.0000 9.0339 9.0339 1.2500e003 2.6000e- 004 Electricity 0.0000 0.0000 0.0000 0.0000 9.1420 Unmitigated

0.0000 9.0339 9.0339 1.2500e003 2.6000e- 004 0.0000 0.0000 0.0000 0.0000 9.1420 CO2e
Category tons/yr MT/yr
Electricity
Mitigated
PM2.5
Total
SO2 Fugitive Bio- CO2 NBio- CO2 Total CO2 CH4 N2O
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
Historical Energy Use: N

5.1 Mitigation Measures Energy
ROG NOx CO

7.7245
Land Use kWh/yr t
o
MT/yr
Condo/Townhous
e
80134.7 7.6332 1.0500e003 2.2000e- 004

9.1420
Mitigated
Electricity
Use
Total CO2 CH4 N2O CO2e
Total 9.0339 1.2400e003 2.6000e- 004

7.7245
Enclosed Parking
Structure
14704.8 1.4007 1.9000e004 4.0000e- 005 1.4175
Land Use kWh/yr t
o
MT/yr
Condo/Townhous
e
80134.7 7.6332 1.0500e003 2.2000e- 004

22.5970

5.3 Energy by Land Use - Electricity
Unmitigated
Electricity
Use
Total CO2 CH4 N2O CO2e

1.5700e003 0.0000 22.4635 22.4635 4.3000e- 004 4.1000e- 004 1.2000e- 004 1.5700e- 003 1.5700e- 003 1.5700e- 003

0.0000 0.0000 0.0000 0.0000
Total 2.2700e003 0.0194 8.2500e- 003

0.0000 0.0000 0.0000 0.0000 0.0000

22.5970
Enclosed Parking
Structure
0 0.0000 0.0000 0.0000 0.0000 0.0000

1.5700e003 0.0000 22.4635 22.4635 4.3000e- 004 4.1000e- 004 1.2000e- 004 1.5700e- 003 1.5700e- 003 1.5700e- 003 Land Use kBTU/yr tons/yr MT/yr
Condo/Townhous
e
420950 2.2700e003 0.0194 8.2500e- 003
Fugitive Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
NaturalGa
s Use
ROG NOx CO SO2

0.0000 0.1825 0.1825 1.8000e004 6.2000e- 0.0000 0.1869 004 6.2000e- 004 6.2000e- 004 6.2000e- 004 Landscaping 3.3800e- 003 1.2900e- 003 0.1117 1.0000e- 005

0.6839 0.2809 0.9647 1.1000e003 4.0000e- 005 6.8100e- 1.0056 003 6.8100e- 003 6.8100e- 003 6.8100e- 003 Hearth 0.0346 8.0000e- 004 0.0477 9.0000e- 005 Consumer 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Products

0.1317
Architectural 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Coating

0.0238
Total CO2 CH4 N2O CO2e
SubCategory tons/yr MT/yr
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2

6.2 Area by SubCategory
Unmitigated
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10

0.6839 0.4634 1.1472 1.2800e003 4.0000e- 005 7.4300e- 1.1925 003 7.4300e- 003 7.4300e- 003 7.4300e- 003 Unmitigated 0.1934 2.0800e- 003 0.1593 1.0000e- 004

0.6839 0.4634 1.1472 1.2800e003 4.0000e- 005 7.4300e- 1.1925 003 7.4300e- 003 7.4300e- 003 7.4300e- 003 Mitigated 0.1934 2.0800e- 003 0.1593 1.0000e- 004 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2

9.1420

6.0 Area Detail

6.1 Mitigation Measures Area
ROG NOx CO SO2 Fugitive
PM10
Total 9.0339 1.2400e003 2.6000e- 004
Enclosed Parking
Structure
14704.8 1.4007 1.9000e004 4.0000e- 005 1.4175

Unmitigated 1.0192 0.0319 7.7000e004 2.0479
Category t
o
MT/yr
Mitigated 1.0192 0.0319 7.7000e004 2.0479

7.0 Water Detail

7.1 Mitigation Measures Water
Total CO2 CH4 N2O CO2e

0.6839 0.4634 1.1472 1.2800e003 4.0000e- 005 7.4300e- 1.1925 003 7.4300e- 003 7.4300e- 003 7.4300e- 003 Total 0.1934 2.0900e- 003 0.1593 1.0000e- 004

0.0000 0.1825 0.1825 1.8000e004 6.2000e- 0.0000 0.1869 004 6.2000e- 004 6.2000e- 004 6.2000e- 004 Landscaping 3.3800e- 003 1.2900e- 003 0.1117 1.0000e- 005

0.6839 0.2809 0.9647 1.1000e003 4.0000e- 005 6.8100e- 1.0056 003 6.8100e- 003 6.8100e- 003 6.8100e- 003 Hearth 0.0346 8.0000e- 004 0.0477 9.0000e- 005 Consumer 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Products

0.1317
Architectural 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Coating

0.0238
Total CO2 CH4 N2O CO2e
SubCategory tons/yr MT/yr
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2
Mitigated
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10

0.6839 0.4634 1.1472 1.2800e003 4.0000e- 005 7.4300e- 1.1925 003 7.4300e- 003 7.4300e- 003 7.4300e- 003 Total 0.1934 2.0900e- 003 0.1593 1.0000e- 004

2.0479

8.0 Waste Detail

8.1 Mitigation Measures Waste
Category/Year
Total 1.0192 0.0319 7.7000e004

2.0479
Enclosed Parking
Structure
0 / 0 0.0000 0.0000 0.0000 0.0000
Land Use Mgal t
o
MT/yr
Condo/Townhous
e

0.97731 /

0.61613

1.0192 0.0319 7.7000e004

2.0479
Mitigated
Indoor/Out
door Use
Total CO2 CH4 N2O CO2e
Total 1.0192 0.0319 7.7000e004

2.0479
Enclosed Parking
Structure
0 / 0 0.0000 0.0000 0.0000 0.0000
Land Use Mgal t
o
MT/yr
Condo/Townhous
e

0.97731 /

0.61613

1.0192 0.0319 7.7000e004

7.2 Water by Land Use
Unmitigated
Indoor/Out
door Use
Total CO2 CH4 N2O CO2e

Total 1.4006 0.0828 0.0000 3.4700

3.4700
Enclosed Parking
Structure
0 0.0000 0.0000 0.0000 0.0000
Land Use tons t
o
MT/yr
Condo/Townhous
e

6.9 1.4006 0.0828 0.0000

3.4700
Mitigated
Waste
Disposed
Total CO2 CH4 N2O CO2e
Total 1.4006 0.0828 0.0000

3.4700
Enclosed Parking
Structure
0 0.0000 0.0000 0.0000 0.0000
Land Use tons t
o
MT/yr
Condo/Townhous
e

6.9 1.4006 0.0828 0.0000

8.2 Waste by Land Use
Unmitigated
Waste
Disposed
Total CO2 CH4 N2O CO2e
Unmitigated 1.4006 0.0828 0.0000 3.4700
to
MT/yr
Mitigated 1.4006 0.0828 0.0000 3.4700
Total CO2 CH4 N2O CO2e

User Defined Equipment
Equipment Type Number

11.0 Vegetation
Load Factor Fuel Type
Boilers
Equipment Type Number Heat Input/Day Heat Input/Year Boiler Rating Fuel Type Horse Power Load Factor Fuel Type

10.0 Stationary Equipment
Fire Pumps and Emergency Generators
Equipment Type Number Hours/Day Hours/Year Horse Power

9.0 Operational Offroad
Equipment Type Number Hours/Day Days/Year

Attachment 3: EMFAC2017 Calculations

Phase
CalEEMod WORKER TRIPS
CalEEMod VENDOR TRIPS
Total Worker Trips
Total Vendor Trips
CalEEMod HAULING TRIPS
Worker Trip Length
Vendor Trip Length
Hauling Trip Length
Worker Vehicle Class
Vendor Vehicle Class
Hauling Vehicle Class
Worker
VMT
Vendor
VMT
Hauling
VMT
Demolition 10 0 110 0 5 10.8 7.3 20 LD_Mix HDT_Mix HHDT 1188 0 100Site Preparation 5 0 115 0 0 10.8 7.3 20 LD_Mix HDT_Mix HHDT 1242 0 0Grading 10 0 210 0 75 10.8 7.3 20 LD_Mix HDT_Mix HHDT 2268 0 1500Trenching 3 0 132 0 0 10.8 7.3 20 LD_Mix HDT_Mix HHDT 1425.6 0 0Building Construction 12 2 1296 216 0 10.8 7.3 7.3 LD_Mix HDT_Mix HHDT 13996.8 1576.8 0Architectural Coating 2 0 134 0 0 10.8 7.3 20 LD_Mix HDT_Mix HHDT 1447.2 0 0Paving 18 0 54 0 0 10.8 7.3 7.3 LD_Mix HDT_Mix HHDT 583.2 0 02021 9/1/21 12/31/21 122 882022 1/1/22 6/15/22 166 1182023 1 0 289 206 Total Workdays
Phase  Start Date End Date  Days/Week Workdays
Demolition 9/1/2021 9/15/2021 5 11Site Preparation 9/15/2021 10/15/2021 5 23Grading 10/16/2021 11/15/2021 5 21Trenching 11/16/2021 1/14/2022 5 44Building Construction 12/15/2021 5/15/2022 5 108Architectural Coating 3/15/2022 6/15/2022 5 67Paving 12/8/2021 12/10/2021 5 3Number of Days Per Year CalEEMod Construction Inputs

Pollutants ROG NOx CO SO2
Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total NBio‐ CO2
YEAR Metric Tons
2021 0.0011 0.0069 0.0110 0.0001 0.0035 0.0007 0.0043 0.0005 0.0003 0.0009 4.7507 2022 0.0012 0.0080 0.0139 0.0001 0.0048 0.0009 0.0057 0.0007 0.0004 0.0011 6.2948 2021 0.0008 0.0013 0.0035 0.0000 0.0003 0.0001 0.0004 0.0000 0.0000 0.0001 0.5275 2022 0.0010 0.0017 0.0046 0.0000 0.0004 0.0001 0.0005 0.0001 0.0000 0.0001 0.7006 Summary of Construction Traffic Emissions (EMFAC2017)
Tons
Criteria Pollutants
Toxic Air Contaminants (1 Mile Trip Length)

Source: EMFAC2017 (v1.0.3) Emission Rates
Region Type: CountyRegion: San MateoCalendar Year: 2021Season: AnnualVehicle Classification: EMFAC2007 CategoriesUnits: miles/day for VMT, trips/day for Trips, g/mile for RUNEX, PMBW and PMTW, g/trip for STREX, HOTSOAK and RUNLOSS, g/vehicle/day for IDLEX, RESTLOSS and DIURNRegion Calendar YVehicle CatModel Yea Speed Fuel PopulationVMT Trips NOx_RUNENOx_IDLEXNOx_STRE PM2.5_RUPM2.5_IDLPM2.5_STRPM2.5_PMPM2.5_PMPM10_RUNPM10_IDL PM10_STRPM10_PM PM10_PM CO2_RUNECO2_IDLEXCO2_STREXCH4_RUNECH4_IDLEXCH4_STREXN2O_RUNEN2O_IDLEXN2O_STRE ROG_RUN ROG_IDLEXROG_STRE ROG_HOTSROG_RUN ROG_REST ROG_DIURTOG_RUNETOG_IDLEXTOG_STRE TOG_HOTSTOG_RUNLTOG_REST TOG_DIURCO_RUNEXCO_IDLEX CO_STREX SOx_RUNESOx_IDLEXSOx_STREX San Mateo 2021 HHDT Aggregate Aggregate Gasoline 2.532598 446.2471 50.67223 2.831271 0 0.014402 0.000799 0 0.00028 0.005 0.02646 0.000869 0 0.000305 0.02 0.06174 2041.498 0 48.50991 0.069466 0 0.000634 0.125196 0 0.000703 0.313104 0 0.003318 0.033772 0.156198 0.009032 0.014039 0.456881 0 0.003633 0.033772 0.156198 0.009032 0.014039 27.20392 0 6.457416 0.020202 0 0.00048 San Mateo 2021 HHDT Aggregate Aggregate Diesel 1208.92 106361.1 10410.36 4.822382 51.44394 2.018739 0.057811 0.0743 0 0.008684 0.025532 0.060425 0.077659 0 0.034738 0.059576 1696.123 8387.493 0 0.006761 0.152113 0 0.266607 1.318397 0 0.14557 3.274961 00000 0.165721 3.728293 00000 0.533324 39.73895 0 0.016024 0.079241 0 San Mateo 2021 HHDT Aggregate Aggregate Natural Ga 126.7771 5162.202 494.4307 1.346704 21.87477 0 0.004478 0.023163 0 0.009 0.02646 0.004681 0.02421 0 0.036 0.06174 3198.242 4155.154 0 3.391872 1.217623 0 0.651982 0.847055 0 0.128536 0.036371 00000 3.552887 1.264291 00000 10.85713 18.88665 0000 San Mateo 2021 LDA Aggregate Aggregate Gasoline 281462.2 8895614 1335477 0.041188 0 0.206593 0.001321 0 0.001823 0.002 0.01575 0.001437 0 0.001982 0.008 0.03675 261.7459 0 56.03422 0.00242 0 0.05694 0.004497 0 0.02671 0.0096 0 0.26575 0.102145 0.223773 0.177057 0.178303 0.014005 0 0.290961 0.102145 0.223773 0.177057 0.178303 0.629866 0 2.423839 0.00259 0 0.000555 San Mateo 2021 LDA Aggregate Aggregate Diesel 3049.017 96691.52 14406.99 0.080533 0 0 0.00664 0 0 0.002 0.01575 0.006941 0 0 0.008 0.03675 206.756 0 0 0.000628 0 0 0.032499 0 0 0.01353 000000 0.015403 000000 0.197747 0 0 0.001955 0 0 San Mateo 2021 LDA Aggregate Aggregate Electricity 6731.919 227344.6 33418.54 000000 0.002 0.01575 0 0 0 0.008 0.03675 000000000000 0.004888 0 0.003128 0.012002 0 0 0 0.004888 0 0.003128 0.012002 000000 San Mateo 2021 LDT1 Aggregate Aggregate Gasoline 38946.93 1231961 184643.5 0.074829 0 0.232267 0.00173 0 0.002249 0.002 0.01575 0.001881 0 0.002446 0.008 0.03675 298.0115 0 63.64168 0.003883 0 0.064322 0.006178 0 0.027593 0.016693 0 0.311613 0.130491 0.49711 0.245108 0.266151 0.024337 0 0.341175 0.130491 0.49711 0.245108 0.266151 0.882128 0 2.463111 0.002949 0 0.00063 San Mateo 2021 LDT1 Aggregate Aggregate Diesel 17.13189 301.423 58.6119 1.07976 0 0 0.146404 0 0 0.002 0.01575 0.153024 0 0 0.008 0.03675 411.4568 0 0 0.008976 0 0 0.064675 0 0 0.193251 000000 0.220004 000000 1.066027 0 0 0.00389 0 0 San Mateo 2021 LDT1 Aggregate Aggregate Electricity 251.7812 8876.24 1265.331 0 0 0 0 0 0 0.002 0.01575 0 0 0 0.008 0.03675 000000000000 0.004888 0 0.003128 0.012002 0 0 0 0.004888 0 0.003128 0.012002 000000 San Mateo 2021 LDT2 Aggregate Aggregate Gasoline 124776.5 3966360 596103.2 0.062716 0 0.27794 0.001421 0 0.001831 0.002 0.01575 0.001546 0 0.001992 0.008 0.03675 320.7249 0 69.62036 0.00302 0 0.068545 0.005582 0 0.032265 0.012029 0 0.317083 0.093491 0.332713 0.20043 0.187904 0.017545 0 0.347165 0.093491 0.332713 0.20043 0.187904 0.726684 0 2.914491 0.003174 0 0.000689 San Mateo 2021 LDT2 Aggregate Aggregate Diesel 914.3532 32249.65 4526.673 0.038254 0 0 0.004445 0 0 0.002 0.01575 0.004646 0 0 0.008 0.03675 279.7984 0 0 0.000617 0 0 0.04398 0 0 0.013286 000000 0.015125 000000 0.1127 0 0 0.002645 0 0San Mateo 2021 LDT2 Aggregate Aggregate Electricity 1346.583 38287.31 6798.974 000000 0.002 0.01575 0 0 0 0.008 0.03675 000000000000 0.004888 0 0.003128 0.012002 0 0 0 0.004888 0 0.003128 0.012002 000000 San Mateo 2021 LHDT1 Aggregate Aggregate Gasoline 8540.807 294678.5 127245.3 0.187228 0.038379 0.505697 0.002085 0 0.000366 0.002 0.03276 0.002267 0 0.000398 0.008 0.07644 1004.048 120.6229 18.95963 0.008807 0.123181 0.022764 0.011803 0.003232 0.040953 0.041578 0.439849 0.113884 0.095412 0.680616 0.01934 0.031725 0.060671 0.641827 0.124688 0.095412 0.680616 0.01934 0.031725 0.759022 3.757129 1.735062 0.009936 0.001194 0.000188 San Mateo 2021 LHDT1 Aggregate Aggregate Diesel 5376.148 207067.4 67625.18 1.203322 1.956837 0 0.017312 0.026832 0 0.003 0.03276 0.018095 0.028045 0 0.012 0.07644 539.0996 131.3706 0 0.006669 0.005098 0 0.084739 0.02065 0 0.143572 0.10976 00000 0.163447 0.124954 00000 0.556151 0.909745 0 0.005096 0.001242 0 San Mateo 2021 LHDT2 Aggregate Aggregate Gasoline 1180.837 40135.48 17592.71 0.209415 0.037867 0.513103 0.002029 0 0.000335 0.002 0.03822 0.002206 0 0.000365 0.008 0.08918 1145.87 138.6775 21.56691 0.007822 0.121399 0.022475 0.013634 0.003082 0.040307 0.034698 0.43401 0.112191 0.097486 0.716672 0.018746 0.03105 0.050631 0.633306 0.122834 0.097486 0.716672 0.018746 0.03105 0.627609 3.757621 1.759131 0.011339 0.001372 0.000213 San Mateo 2021 LHDT2 Aggregate Aggregate Diesel 2043.518 78128.83 25704.89 0.896184 1.934519 0 0.01684 0.026954 0 0.003 0.03822 0.017601 0.028173 0 0.012 0.08918 604.2541 210.1577 0 0.00626 0.005098 0 0.09498 0.033034 0 0.134779 0.10976 00000 0.153437 0.124954 00000 0.517242 0.909745 0 0.005712 0.001987 0 San Mateo 2021 MCY Aggregate Aggregate Gasoline 15514.81 143935.1 31029.62 1.157112 0 0.273312 0.001926 0 0.003224 0.001 0.00504 0.00206 0 0.003423 0.004 0.01176 213.2371 0 61.23009 0.332174 0 0.26158 0.066746 0 0.015551 2.234514 0 1.982543 0.597211 2.102478 0.780635 1.269203 2.770018 0 2.157734 0.597211 2.102478 0.780635 1.269203 19.39604 0 9.137382 0.00211 0 0.000606 San Mateo 2021 MDV Aggregate Aggregate Gasoline 75621.55 2430141 358800.7 0.073488 0 0.331739 0.001469 0 0.002007 0.002 0.01575 0.001597 0 0.002182 0.008 0.03675 385.661 0 84.65965 0.003574 0 0.080266 0.006245 0 0.034644 0.015383 0 0.393988 0.107459 0.357118 0.239762 0.221965 0.02189 0 0.431332 0.107459 0.357118 0.239762 0.221965 0.801832 0 3.32077 0.003816 0 0.000838San Mateo 2021 MDV Aggregate Aggregate Diesel 2032.67 73375.01 10021.82 0.035146 0 0 0.003798 0 0 0.002 0.01575 0.003969 0 0 0.008 0.03675 364.5115 0 0 0.000441 0 0 0.057296 0 0 0.009496 000000 0.010811 000000 0.167682 0 0 0.003446 0 0 San Mateo 2021 MDV Aggregate Aggregate Electricity 499.1085 14927.81 2561.27 000000 0.002 0.01575 0 0 0 0.008 0.03675 000000000000 0.004888 0 0.003128 0.012002 0 0 0 0.004888 0 0.003128 0.012002 000000 San Mateo 2021 MH Aggregate Aggregate Gasoline 1012.604 10475.38 101.3009 0.289108 0 0.33309 0.001533 0 0.000361 0.003 0.05586 0.001668 0 0.000393 0.012 0.13034 1724.952 0 25.35093 0.011174 0 0.031557 0.020013 0 0.036673 0.047014 0 0.129981 0.060707 1.482955 0.025377 0.060699 0.068602 0 0.142312 0.060707 1.482955 0.025377 0.060699 1.179087 0 2.932267 0.01707 0 0.000251 San Mateo 2021 MH Aggregate Aggregate Diesel 369.5217 3896.478 36.95217 3.264603 0 0 0.055349 0 0 0.004 0.05586 0.057851 0 0 0.016 0.13034 1008.352 0 0 0.003968 0 0 0.158499 0 0 0.085434 000000 0.09726 000000 0.283679 0 0 0.009533 0 0 San Mateo 2021 MHDT Aggregate Aggregate Gasoline 909.4785 54174.65 18196.85 0.499638 0.088488 0.387901 0.001283 0 0.000452 0.003 0.05586 0.001396 0 0.000492 0.012 0.13034 1743.713 537.0347 39.55954 0.015647 0.265774 0.041897 0.024692 0.00754 0.030481 0.076123 1.012741 0.22595 0.080554 0.479357 0.017312 0.028459 0.111078 1.477789 0.247387 0.080554 0.479357 0.017312 0.028459 1.76198 15.11679 5.049643 0.017255 0.005314 0.000391 San Mateo 2021 MHDT Aggregate Aggregate Diesel 4915.917 311965.9 50724.24 2.71336 8.169784 1.490812 0.064641 0.02361 0 0.003 0.05586 0.067563 0.024678 0 0.012 0.13034 1050.501 887.7484 0 0.007414 0.005419 0 0.165124 0.139542 0 0.159621 0.116672 00000 0.181717 0.132822 00000 0.466643 2.520172 0 0.009925 0.008387 0 San Mateo 2021 OBUS Aggregate Aggregate Gasoline 304.2296 17885.2 6087.026 0.373215 0.064976 0.307927 0.000981 0 0.000242 0.003 0.05586 0.001067 0 0.000263 0.012 0.13034 1778.4 378.4266 26.1745 0.011826 0.205731 0.029538 0.020024 0.005948 0.026976 0.056096 0.744988 0.147323 0.02347 0.27426 0.015546 0.031094 0.081855 1.087085 0.1613 0.02347 0.27426 0.015546 0.031094 1.246301 5.766914 3.125772 0.017599 0.003745 0.000259 San Mateo 2021 OBUS Aggregate Aggregate Diesel 647.7138 45257.75 5917.718 2.965136 13.24071 1.697521 0.044716 0.043225 0 0.003 0.05586 0.046738 0.04518 0 0.012 0.13034 1215.387 1886.732 0 0.005772 0.033349 0 0.191042 0.296568 0 0.124271 0.718004 00000 0.141474 0.817393 00000 0.414399 8.333469 0 0.011482 0.017825 0 San Mateo 2021 SBUS Aggregate Aggregate Gasoline 67.12178 3512.181 268.4871 0.724361 0.92226 0.510251 0.001768 0 0.000731 0.002 0.3192 0.001923 0 0.000795 0.008 0.7448 842.8819 2513.125 51.09537 0.022013 2.438558 0.067417 0.035004 0.088042 0.047324 0.10917 10.57835 0.390084 0.068525 0.560691 0.009267 0.021035 0.159301 15.43591 0.427093 0.068525 0.560691 0.009267 0.021035 2.431511 81.85897 10.64378 0.008341 0.024869 0.000506 San Mateo 2021 SBUS Aggregate Aggregate Diesel 188.8153 5924.999 2178.903 8.563292 46.94516 0.589982 0.047323 0.061412 0 0.003 0.3192 0.049463 0.064189 0 0.012 0.7448 1168.903 3732.651 0 0.00571 0.014172 0 0.183735 0.586721 0 0.122925 0.305124 00000 0.13994 0.347361 00000 0.310277 5.196214 0 0.011043 0.035264 0 San Mateo 2021 UBUS Aggregate Aggregate Gasoline 38.24087 926.4432 152.9635 0.286887 0 0.903525 0.00108 0 0.000458 0.00277 0.051797 0.001175 0 0.000498 0.011079 0.120859 2031.064 0 92.5355 0.005471 0 0.108325 0.022311 0 0.06829 0.019963 0 0.534519 0.047942 0.28654 0.008713 0.011861 0.02913 0 0.585231 0.047942 0.28654 0.008713 0.011861 0.346231 0 8.247734 0.020099 0 0.000916 San Mateo 2021 UBUS Aggregate Aggregate Diesel 304.4449 24349.91 1217.78 3.893884 0 0 0.008125 0 0 0.007894 0.031881 0.008492 0 0 0.031575 0.074388 1767.879 0 0 0.243745 0 0 0.277886 0 0 0.003483 000000 0.24876 000000 0.395642 0 0 0.016713 0 0 San Mateo 2021 UBUS Aggregate Aggregate Natural Ga 39.94428 2695.661 159.7771 0.49688 0 0 0.003228 0 0 0.00869 0.027979 0.003374 0 0 0.03476 0.065284 2042.655 0 0 6.540523 0 0 0.416409 0 0 0.093451 000000 6.675083 000000 50.89105 00000

Source: EMFAC2017 (v1.0.3) Emission Rates
Region Type: CountyRegion: San MateoCalendar Year: 2022Season: AnnualVehicle Classification: EMFAC2007 CategoriesUnits: miles/day for VMT, trips/day for Trips, g/mile for RUNEX, PMBW and PMTW, g/trip for STREX, HOTSOAK and RUNLOSS, g/vehicle/day for IDLEX, RESTLOSS and DIURNRegion Calendar YVehicle CatModel Yea Speed Fuel PopulationVMT Trips NOx_RUNENOx_IDLEXNOx_STRE PM2.5_RUPM2.5_IDLPM2.5_STRPM2.5_PMPM2.5_PMPM10_RUNPM10_IDL PM10_STRPM10_PM PM10_PM CO2_RUNECO2_IDLEXCO2_STREXCH4_RUNECH4_IDLEXCH4_STREXN2O_RUNEN2O_IDLEXN2O_STRE ROG_RUN ROG_IDLEXROG_STRE ROG_HOTSROG_RUN ROG_REST ROG_DIURTOG_RUNETOG_IDLEXTOG_STRE TOG_HOTSTOG_RUNLTOG_REST TOG_DIURCO_RUNEXCO_IDLEX CO_STREX SOx_RUNESOx_IDLEXSOx_STREX San Mateo 2022 HHDT Aggregate Aggregate Gasoline 2.777853 472.715 55.57928 2.748403 0 0.013457 0.000841 0 0.000287 0.005 0.02646 0.000914 0 0.000312 0.02 0.06174 1993.356 0 47.87156 0.066368 0 0.000589 0.122942 0 0.000657 0.295052 0 0.003082 0.032556 0.152655 0.008908 0.013368 0.43054 0 0.003374 0.032556 0.152655 0.008908 0.013368 26.85146 0 6.517482 0.019726 0 0.000474 San Mateo 2022 HHDT Aggregate Aggregate Diesel 1215.42 107659.4 10539.66 4.165704 50.99253 2.212041 0.03369 0.041677 0 0.008693 0.025559 0.035214 0.043562 0 0.034774 0.059637 1648.504 8572.517 0 0.004229 0.152316 0 0.259122 1.34748 0 0.091043 3.27933 00000 0.103645 3.733267 00000 0.380722 42.35619 0 0.015574 0.080989 0 San Mateo 2022 HHDT Aggregate Aggregate Natural Ga 134.8882 5494.913 526.064 1.204197 21.39831 0 0.00421 0.020699 0 0.009 0.02646 0.004401 0.021634 0 0.036 0.06174 3157.131 4089.807 0 3.342946 1.208742 0 0.643602 0.833734 0 0.116887 0.033614 00000 3.490479 1.252231 00000 10.906 19.18613 0000 San Mateo 2022 LDA Aggregate Aggregate Gasoline 285883.4 8730359 1356969 0.03605 0 0.193174 0.00125 0 0.001731 0.002 0.01575 0.00136 0 0.001882 0.008 0.03675 254.7223 0 54.53474 0.002104 0 0.052491 0.004124 0 0.025575 0.008184 0 0.24181 0.09584 0.215371 0.166346 0.165388 0.01194 0 0.26475 0.09584 0.215371 0.166346 0.165388 0.581955 0 2.356656 0.002521 0 0.00054 San Mateo 2022 LDA Aggregate Aggregate Diesel 3168.217 96975.13 14978.02 0.065635 0 0 0.005571 0 0 0.002 0.01575 0.005823 0 0 0.008 0.03675 201.5201 0 0 0.000546 0 0 0.031676 0 0 0.011746 000000 0.013372 000000 0.18472 0 0 0.001905 0 0 San Mateo 2022 LDA Aggregate Aggregate Electricity 7621.214 256590.1 37762.18 000000 0.002 0.01575 0 0 0 0.008 0.03675 000000000000 0.004888 0 0.003128 0.012002 0 0 0 0.004888 0 0.003128 0.012002 000000 San Mateo 2022 LDT1 Aggregate Aggregate Gasoline 41432.75 1266108 196720.5 0.063699 0 0.213989 0.001597 0 0.002094 0.002 0.01575 0.001737 0 0.002277 0.008 0.03675 290.5103 0 61.94231 0.003311 0 0.058348 0.005522 0 0.026341 0.014006 0 0.277497 0.117193 0.451758 0.222711 0.237262 0.020427 0 0.303823 0.117193 0.451758 0.222711 0.237262 0.787692 0 2.384672 0.002875 0 0.000613 San Mateo 2022 LDT1 Aggregate Aggregate Diesel 16.25248 284.3033 56.05197 0.973767 0 0 0.132117 0 0 0.002 0.01575 0.13809 0 0 0.008 0.03675 403.6574 0 0 0.008132 0 0 0.063449 0 0 0.175077 000000 0.199314 000000 0.968724 0 0 0.003816 0 0 San Mateo 2022 LDT1 Aggregate Aggregate Electricity 359.7921 12796.34 1812.632 000000 0.002 0.01575 0 0 0 0.008 0.03675 000000000000 0.004888 0 0.003128 0.012002 0 0 0 0.004888 0 0.003128 0.012002 000000 San Mateo 2022 LDT2 Aggregate Aggregate Gasoline 132267.5 4056131 631991.8 0.054439 0 0.253266 0.00135 0 0.001756 0.002 0.01575 0.001468 0 0.00191 0.008 0.03675 309.9528 0 67.29858 0.002693 0 0.063591 0.005055 0 0.030403 0.010574 0 0.290905 0.08787 0.321064 0.193616 0.17912 0.015425 0 0.318504 0.08787 0.321064 0.193616 0.17912 0.675215 0 2.833844 0.003067 0 0.000666 San Mateo 2022 LDT2 Aggregate Aggregate Diesel 1027.683 34465.38 5067.758 0.036059 0 0 0.00431 0 0 0.002 0.01575 0.004505 0 0 0.008 0.03675 272.2158 0 0 0.000608 0 0 0.042789 0 0 0.013089 000000 0.014901 000000 0.113636 0 0 0.002573 0 0 San Mateo 2022 LDT2 Aggregate Aggregate Electricity 1743.196 47537.34 8780.26 000000 0.002 0.01575 0 0 0 0.008 0.03675 000000000000 0.004888 0 0.003128 0.012002 0 0 0 0.004888 0 0.003128 0.012002 000000 San Mateo 2022 LHDT1 Aggregate Aggregate Gasoline 8860.681 296397.6 132010.9 0.164845 0.037097 0.481227 0.002071 0 0.000356 0.002 0.03276 0.002252 0 0.000387 0.008 0.07644 992.6659 119.525 18.77226 0.007781 0.119821 0.021008 0.01052 0.003169 0.039372 0.036446 0.425239 0.104681 0.089625 0.634387 0.018517 0.029926 0.053182 0.620507 0.114613 0.089625 0.634387 0.018517 0.029926 0.672007 3.760132 1.686748 0.009823 0.001183 0.000186 San Mateo 2022 LHDT1 Aggregate Aggregate Diesel 5881.241 218648.3 73978.61 1.008919 1.817135 0 0.015674 0.026708 0 0.003 0.03276 0.016383 0.027916 0 0.012 0.07644 530.9331 129.4717 0 0.006468 0.005098 0 0.083455 0.020351 0 0.139258 0.10976 00000 0.158536 0.124954 00000 0.540902 0.909745 0 0.005019 0.001224 0 San Mateo 2022 LHDT2 Aggregate Aggregate Gasoline 1238.578 40924.28 18452.97 0.180484 0.036448 0.486851 0.002003 0 0.000323 0.002 0.03822 0.002179 0 0.000351 0.008 0.08918 1131.957 137.2937 21.32692 0.006639 0.117752 0.020688 0.011966 0.003025 0.038755 0.028918 0.417874 0.102654 0.089873 0.641758 0.017651 0.028619 0.042197 0.60976 0.112393 0.089873 0.641758 0.017651 0.028619 0.528397 3.761867 1.697237 0.011202 0.001359 0.000211 San Mateo 2022 LHDT2 Aggregate Aggregate Diesel 2262.753 83013.72 28462.58 0.757324 1.796044 0 0.016155 0.026868 0 0.003 0.03822 0.016885 0.028083 0 0.012 0.08918 595.284 207.3357 0 0.006136 0.005098 0 0.09357 0.03259 0 0.132094 0.10976 00000 0.15038 0.124954 00000 0.510466 0.909745 0 0.005628 0.00196 0 San Mateo 2022 MCY Aggregate Aggregate Gasoline 16529.54 149168.5 33059.08 1.153943 0 0.273469 0.001956 0 0.003138 0.001 0.00504 0.002094 0 0.003337 0.004 0.01176 213.0842 0 60.80181 0.329874 0 0.259736 0.066591 0 0.015569 2.210717 0 1.965768 0.5674 1.990179 0.756717 1.245335 2.749517 0 2.139822 0.5674 1.990179 0.756717 1.245335 19.01708 0 9.173957 0.002109 0 0.000602 San Mateo 2022 MDV Aggregate Aggregate Gasoline 80314 2499802 381574.2 0.06087 0 0.297162 0.001379 0 0.001889 0.002 0.01575 0.0015 0 0.002054 0.008 0.03675 372.4557 0 81.68051 0.002995 0 0.073 0.00551 0 0.032365 0.01208 0 0.352502 0.099964 0.339622 0.228954 0.209677 0.017601 0 0.385941 0.099964 0.339622 0.228954 0.209677 0.708583 0 3.157881 0.003686 0 0.000808 San Mateo 2022 MDV Aggregate Aggregate Diesel 2272.544 78162.23 11166.87 0.030566 0 0 0.003443 0 0 0.002 0.01575 0.003598 0 0 0.008 0.03675 354.0945 0 0 0.000407 0 0 0.055659 0 0 0.008755 000000 0.009967 000000 0.162994 0 0 0.003347 0 0 San Mateo 2022 MDV Aggregate Aggregate Electricity 791.7548 22645.44 4049.972 000000 0.002 0.01575 0 0 0 0.008 0.03675 000000000000 0.004888 0 0.003128 0.012002 0 0 0 0.004888 0 0.003128 0.012002 000000 San Mateo 2022 MH Aggregate Aggregate Gasoline 1080.218 11056.79 108.065 0.243025 0 0.33071 0.001467 0 0.000343 0.003 0.05586 0.001595 0 0.000373 0.012 0.13034 1694.184 0 24.78959 0.009323 0 0.030643 0.018018 0 0.037255 0.037663 0 0.123517 0.051682 1.255047 0.02193 0.051653 0.054958 0 0.135236 0.051682 1.255047 0.02193 0.051653 0.903608 0 2.791484 0.016765 0 0.000245 San Mateo 2022 MH Aggregate Aggregate Diesel 406.2479 4155.317 40.62479 3.121607 0 0 0.049181 0 0 0.004 0.05586 0.051405 0 0 0.016 0.13034 992.5125 0 0 0.003823 0 0 0.156009 0 0 0.08231 000000 0.093704 000000 0.268912 0 0 0.009383 0 0 San Mateo 2022 MHDT Aggregate Aggregate Gasoline 956.0975 56310.16 19129.6 0.401293 0.088681 0.375151 0.001267 0 0.000435 0.003 0.05586 0.001378 0 0.000473 0.012 0.13034 1713.287 529.7913 38.50416 0.01254 0.269583 0.039811 0.020842 0.007794 0.030516 0.060239 1.015611 0.211025 0.073361 0.429541 0.015892 0.025569 0.0879 1.481978 0.231046 0.073361 0.429541 0.015892 0.025569 1.376857 15.15013 4.694572 0.016954 0.005243 0.000381 San Mateo 2022 MHDT Aggregate Aggregate Diesel 5059.28 329296.5 52181.07 1.960322 6.832488 1.758779 0.030959 0.013394 0 0.003 0.05586 0.032358 0.013999 0 0.012 0.13034 1018.114 861.5358 0 0.003362 0.004323 0 0.160033 0.135421 0 0.072373 0.093082 00000 0.082391 0.105966 00000 0.263752 2.486018 0 0.009619 0.008139 0 San Mateo 2022 OBUS Aggregate Aggregate Gasoline 309.4493 17506.11 6191.461 0.33037 0.065013 0.303626 0.001018 0 0.000244 0.003 0.05586 0.001107 0 0.000265 0.012 0.13034 1751.792 374.5056 25.80105 0.010497 0.206047 0.028879 0.018303 0.005993 0.026834 0.049402 0.745556 0.143567 0.02327 0.273775 0.015372 0.030329 0.072088 1.087914 0.157188 0.02327 0.273775 0.015372 0.030329 1.088572 5.770329 3.038446 0.017335 0.003706 0.000255 San Mateo 2022 OBUS Aggregate Aggregate Diesel 640.9896 44517.47 5852.545 2.479476 10.18109 1.868753 0.0211 0.014245 0 0.003 0.05586 0.022055 0.014889 0 0.012 0.13034 1198.226 1839.754 0 0.002945 0.026687 0 0.188345 0.289184 0 0.063402 0.574566 00000 0.072178 0.654099 00000 0.255295 8.204825 0 0.01132 0.017381 0 San Mateo 2022 SBUS Aggregate Aggregate Gasoline 77.55394 3920.213 310.2158 0.624562 0.923435 0.499036 0.001669 0 0.000705 0.002 0.3192 0.001815 0 0.000767 0.008 0.7448 829.8891 2479.137 49.61529 0.018397 2.444511 0.064533 0.031012 0.089824 0.04739 0.090991 10.59598 0.372063 0.057941 0.422429 0.008158 0.017898 0.132774 15.46163 0.407362 0.057941 0.422429 0.008158 0.017898 2.030575 81.96501 10.05224 0.008212 0.024533 0.000491 San Mateo 2022 SBUS Aggregate Aggregate Diesel 187.2294 5867.013 2160.601 8.328847 46.1304 0.635561 0.046003 0.057864 0 0.003 0.3192 0.048083 0.060481 0 0.012 0.7448 1161.116 3723.952 0 0.005644 0.013947 0 0.182511 0.585353 0 0.121506 0.300269 00000 0.138326 0.341834 00000 0.309322 5.361526 0 0.01097 0.035182 0 San Mateo 2022 UBUS Aggregate Aggregate Gasoline 38.25826 926.8645 153.033 0.309327 0 0.947655 0.00108 0 0.000458 0.00277 0.051797 0.001175 0 0.000498 0.011079 0.120859 2030.959 0 92.62484 0.005436 0 0.113553 0.023538 0 0.07018 0.019935 0 0.563609 0.063702 0.409387 0.011307 0.01505 0.029089 0 0.617081 0.063702 0.409387 0.011307 0.01505 0.364269 0 8.245509 0.020098 0 0.000917 San Mateo 2022 UBUS Aggregate Aggregate Diesel 304.5567 24358.67 1218.227 3.892763 0 0 0.008124 0 0 0.007894 0.031881 0.008491 0 0 0.031575 0.074388 1767.776 0 0 0.243684 0 0 0.27787 0 0 0.003482 000000 0.248697 000000 0.395545 0 0 0.016712 0 0 San Mateo 2022 UBUS Aggregate Aggregate Natural Ga 39.98943 2699.2 159.9577 0.496847 0 0 0.003228 0 0 0.008689 0.027983 0.003374 0 0 0.034756 0.065295 2042.54 0 0 6.539969 0 0 0.416385 0 0 0.093443 000000 6.674518 000000 50.8863 00000

NOx
Exhaust
TOG
Evaporative
TOG
Exhaust
PM
Exhaust
CO
Exhaust
CO2
Exhaust
1 1 1111 *PM Exhaust off model factor is only applied to the PM Exhaust emissions not start/idle

1.0002 1.0001 1.0002 1.0009 1.0005 1.00231.0004 1.0003 1.0004 1.0018 1.0014 1.00651.0007 1.0006 1.0007 1.0032 1.0027 1.01261.0012 1.0010 1.0011 1.0051 1.0044 1.02071.0018 1.0016 1.0016 1.0074 1.0065 1.03091.0023 1.0022 1.0020 1.0091 1.0083 1.0394 Enter NA in the date field if adjustments do not apply1.0028 1.0028 1.0024 1.0105 1.0102 1.04751.0034 1.0035 1.0028 1.0117 1.0120 1.05541.0040 1.0042 1.0032 1.0129 1.0138 1.06291.0047 1.0051 1.0037 1.0142 1.0156 1.07021.0054 1.0061 1.0042 1.0155 1.0173 1.07701.0061 1.0072 1.0047 1.0169 1.0189 1.08341.0068 1.0083 1.0052 1.0182 1.0204 1.08931.0075 1.0095 1.0058 1.0196 1.0218 1.09471.0081 1.0108 1.0063 1.0210 1.0232 1.09971.0088 1.0121 1.0069 1.0223 1.0244 1.10411.0094 1.0134 1.0074 1.0236 1.0255 1.10801.0099 1.0148 1.0079 1.0248 1.0265 1.11141.0104 1.0161 1.0085 1.0259 1.0274 1.11431.0109 1.0174 1.0090 1.0270 1.0281 1.11681.0113 1.0186 1.0095 1.0279 1.0288 1.11891.0116 1.0198 1.0099 1.0286 1.0294 1.12071.0119 1.0207 1.0103 1.0293 1.0299 1.12211.0122 1.0216 1.0106 1.0299 1.0303 1.12331.0124 1.0225 1.0109 1.0303 1.0306 1.12431.0125 1.0233 1.0111 1.0308 1.0309 1.12511.0127 1.0240 1.0113 1.0311 1.0311 1.12581.0128 1.0246 1.0115 1.0314 1.0313 1.12631.0128 1.0252 1.0116 1.0316 1.0315 1.12681.0129 1.0257 1.0117 1.0318 1.0316 1.1272 Enter Year: 2021 1.0002 1.0001 1.0002 1.0009 1.0005 1.0023 The off-model adjustment factors need to be applied only to emissions from gasoline light duty vehicles (LDA, LDT1, LDT2 and MDV). Please note that the adjustment factors are by calendar year and includes all model years.

Adjustment Factors for EMFAC2017 Gasoline Light Duty Vehicles 20492050
NA
2043204420452046204720482037203820392040204120422036202520262027202820292030203120322033203420352024 Year
202120222023

Attachment 4: Project Construction Emissions and Health Risk Calculations

141 3rd Avenue, Daly City, CA
DPM Emissions and Modeling Emission Rates - Unmitigated DPM
Modeled Emission
Construction DPM Area DPM Emissions Area Rate
Year Activity (ton/year) Source (lb/yr) (lb/hr) (g/s) (m2 ) (g/s/m2)
2021-2022 Construction 0.0386 CON_DPM 77.2 0.01923 2.42E-03 3039 7.97E-07 Construction Hours
hr/day = 11 (7am - 6pm)
days/yr = 365
hours/year = 4015
DPM Construction Emissions and Modeling Emission Rates - With Mitigation DPM
Modeled Emission
Construction DPM Area DPM Emissions Area Rate
Year Activity (ton/year) Source (lb/yr) (lb/hr) (g/s) (m2 ) (g/s/m2)
2021-2022 Construction 0.0021 CON_DPM 4.3 0.00106 1.34E-04 3039 4.40E-08 Construction Hours
hr/day = 11 (7am - 6pm)
days/yr = 365
hours/year = 4015

141 3rd Avenue, Daly City, CA
PM2.5 Fugitive Dust Emissions for Modeling - Unmitigated PM2.5
Modeled Emission
Construction Area PM2.5 Emissions Area Rate
Year Activity Source (ton/year) (lb/yr) (lb/hr) (g/s) (m2 ) g/s/m2
2021-2022 Construction CON_FUG 0.0046 9.2 0.00228 2.87E-04 3,039 9.46E-08 Construction Hours
hr/day = 11 (7am - 6pm)
days/yr = 365
hours/year = 4015
PM2.5 Fugitive Dust Construction Emissions for Modeling - With Mitigation PM2.5
Modeled Emission
Construction Area PM2.5 Emissions Area Rate
Year Activity Source (ton/year) (lb/yr) (lb/hr) (g/s) (m2 ) g/s/m2
2021-2022 Construction CON_FUG 0.0024 4.8 0.00119 1.50E-04 3,039 4.94E-08 Construction Hours
hr/day = 11 (7am - 6pm)
days/yr = 365
hours/year = 4015

141 3rd Avenue, Daly City, CA - Construction Health Impact Summary Maximum Impacts at MEI Location - Without Mitigation
Maximum Concentrations Maximum
Exhaust Fugitive Cancer Risk Hazard Annual PM2.5
Emissions PM10/DPM PM2.5 (per million) Index Concentration Year (μg/m3
) (μg/m3) Infant/Child (-) (μg/m3)
2021-2022 0.1714 0.0597 30.5 0.03 0.23
Maximum Impacts at MEI Location - With Mitigation
Maximum Concentrations Maximum
Exhaust Fugitive Cancer Risk Hazard Annual PM2.5
Emissions PM10/DPM PM2.5 (per million) Index Concentration Year (μg/m3
) (μg/m3) Infant/Child (-) (μg/m3)
2021-2022 0.0095 0.0326 1.7 0.002 0.04
- Tier 4 Interim Engine Mitigation
Maximum Impacts at Milestone Academy Preschool
Unmitigated Emissions
Maximum Concentrations Maximum
Exhaust Fugitive Child Hazard Annual PM2.5
Construction PM2.5/DPM PM2.5 Cancer Risk Index Concentration Year (μg/m3
) (μg/m3) (per million) (-) (μg/m3)
2021-2022 0.0188 0.00289 0.9 0.004 0.02

141 3rd Avenue, Daly City, CA - Construction Impacts - Without Mitigation Maximum DPM Cancer Risk and PM2.5 Calculations From Construction Impacts at Off-Site MEI Location - 1.5 meter receptor height Cancer Risk (per million) = CPF x Inhalation Dose x ASF x ED/AT x FAH x 1.0E6 Where: CPF = Cancer potency factor (mg/kg-day)-1
ASF = Age sensitivity factor for specified age group
ED = Exposure duration (years)
AT = Averaging time for lifetime cancer risk (years)
FAH = Fraction of time spent at home (unitless)
Inhalation Dose = Cair x DBR x A x (EF/365) x 10-6
Where: Cair = concentration in air (μg/m3)
DBR = daily breathing rate (L/kg body weight-day)
A = Inhalation absorption factor
EF = Exposure frequency (days/year)
10-6 = Conversion factor
Values
Infant/Child Adult
Age --> 3rd Trimester 0 - 2 2 - 16 16 - 30
Parameter
ASF = 10 10 3 1
CPF = 1.10E+00 1.10E+00 1.10E+00 1.10E+00
DBR* = 361 1090 572 261
A = 1 1 1 1
EF = 350 350 350 350
AT = 70 70 70 70
FAH = 1.00 1.00 1.00 0.73
* 95th percentile breathing rates for infants and 80th percentile for children and adults Construction Cancer Risk by Year - Maximum Impact Receptor Location Infant/Child - Exposure Information Infant/Child Adult - Exposure Information Adult Exposure Age Cancer Modeled Age Cancer Maximum
Exposure Duration DPM Conc (ug/m3) Sensitivity Risk DPM Conc (ug/m3) Sensitivity Risk Hazard Fugitive Total Year (years) Age Year Annual Factor (per million) Year Annual Factor (per million) Index PM2.5 PM2.5 0 0.25 -0.25 - 0* 2021-2022 0.1714 10 2.33 2021-2022 0.1714 - - 1 1 0 - 1 2021-2022 0.1714 10 28.15 2021-2022 0.1714 1 0.49 0.0343 0.0597 0.2311 2 1 1 - 2 0.0000 10 0.00 0.0000 1 0.00
3 1 2 - 3 0.0000 3 0.00 0.0000 1 0.00
4 1 3 - 4 0.0000 3 0.00 0.0000 1 0.00
5 1 4 - 5 0.0000 3 0.00 0.0000 1 0.00
6 1 5 - 6 0.0000 3 0.00 0.0000 1 0.00
7 1 6 - 7 0.0000 3 0.00 0.0000 1 0.00
8 1 7 - 8 0.0000 3 0.00 0.0000 1 0.00
9 1 8 - 9 0.0000 3 0.00 0.0000 1 0.00
10 1 9 - 10 0.0000 3 0.00 0.0000 1 0.00
11 1 10 - 11 0.0000 3 0.00 0.0000 1 0.00
12 1 11 - 12 0.0000 3 0.00 0.0000 1 0.00
13 1 12 - 13 0.0000 3 0.00 0.0000 1 0.00
14 1 13 - 14 0.0000 3 0.00 0.0000 1 0.00
15 1 14 - 15 0.0000 3 0.00 0.0000 1 0.00
16 1 15 - 16 0.0000 3 0.00 0.0000 1 0.00
17 1 16-17 0.0000 1 0.00 0.0000 1 0.00
18 1 17-18 0.0000 1 0.00 0.0000 1 0.00
19 1 18-19 0.0000 1 0.00 0.0000 1 0.00
20 1 19-20 0.0000 1 0.00 0.0000 1 0.00
21 1 20-21 0.0000 1 0.00 0.0000 1 0.00
22 1 21-22 0.0000 1 0.00 0.0000 1 0.00
23 1 22-23 0.0000 1 0.00 0.0000 1 0.00
24 1 23-24 0.0000 1 0.00 0.0000 1 0.00
25 1 24-25 0.0000 1 0.00 0.0000 1 0.00
26 1 25-26 0.0000 1 0.00 0.0000 1 0.00
27 1 26-27 0.0000 1 0.00 0.0000 1 0.00
28 1 27-28 0.0000 1 0.00 0.0000 1 0.00
29 1 28-29 0.0000 1 0.00 0.0000 1 0.00
30 1 29-30 0.0000 1 0.00 0.0000 1 0.00
Total Increased Cancer Risk 30.48 0.49
* Third trimester of pregnancy

141 3rd Avenue, Daly City, CA - Construction Impacts - With Mitigation Maximum DPM Cancer Risk and PM2.5 Calculations From Construction Impacts at Off-Site MEI Location - 1.5 meter receptor height Cancer Risk (per million) = CPF x Inhalation Dose x ASF x ED/AT x FAH x 1.0E6 Where: CPF = Cancer potency factor (mg/kg-day)-1
ASF = Age sensitivity factor for specified age group
ED = Exposure duration (years)
AT = Averaging time for lifetime cancer risk (years)
FAH = Fraction of time spent at home (unitless)
Inhalation Dose = Cair x DBR x A x (EF/365) x 10-6
Where: Cair = concentration in air (μg/m3)
DBR = daily breathing rate (L/kg body weight-day)
A = Inhalation absorption factor
EF = Exposure frequency (days/year)
10-6 = Conversion factor
Values
Infant/Child Adult
Age --> 3rd Trimester 0 - 2 2 - 16 16 - 30
Parameter
ASF = 10 10 3 1
CPF = 1.10E+00 1.10E+00 1.10E+00 1.10E+00
DBR* = 361 1090 572 261
A = 1 1 1 1
EF = 350 350 350 350
AT = 70 70 70 70
FAH = 1.00 1.00 1.00 0.73
* 95th percentile breathing rates for infants and 80th percentile for children and adults Construction Cancer Risk by Year - Maximum Impact Receptor Location Infant/Child - Exposure Information Infant/Child Adult - Exposure Information Adult Exposure Age Cancer Modeled Age Cancer Maximum
Exposure Duration DPM Conc (ug/m3) Sensitivity Risk DPM Conc (ug/m3) Sensitivity Risk Hazard Fugitive Total Year (years) Age Year Annual Factor (per million) Year Annual Factor (per million) Index PM2.5 PM2.5 0 0.25 -0.25 - 0* 2021-2022 0.0095 10 0.13 2021-2022 0.0095 - - 1 1 0 - 1 2021-2022 0.0095 10 1.55 2021-2022 0.0095 1 0.03 0.002 0.0326 0.0420 2 1 1 - 2 0.0000 10 0.00 0.0000 1 0.00 0.000 0.0000 0.0000 3 1 2 - 3 0.0000 3 0.00 0.0000 1 0.00
4 1 3 - 4 0.0000 3 0.00 0.0000 1 0.00
5 1 4 - 5 0.0000 3 0.00 0.0000 1 0.00
6 1 5 - 6 0.0000 3 0.00 0.0000 1 0.00
7 1 6 - 7 0.0000 3 0.00 0.0000 1 0.00
8 1 7 - 8 0.0000 3 0.00 0.0000 1 0.00
9 1 8 - 9 0.0000 3 0.00 0.0000 1 0.00
10 1 9 - 10 0.0000 3 0.00 0.0000 1 0.00
11 1 10 - 11 0.0000 3 0.00 0.0000 1 0.00
12 1 11 - 12 0.0000 3 0.00 0.0000 1 0.00
13 1 12 - 13 0.0000 3 0.00 0.0000 1 0.00
14 1 13 - 14 0.0000 3 0.00 0.0000 1 0.00
15 1 14 - 15 0.0000 3 0.00 0.0000 1 0.00
16 1 15 - 16 0.0000 3 0.00 0.0000 1 0.00
17 1 16-17 0.0000 1 0.00 0.0000 1 0.00
18 1 17-18 0.0000 1 0.00 0.0000 1 0.00
19 1 18-19 0.0000 1 0.00 0.0000 1 0.00
20 1 19-20 0.0000 1 0.00 0.0000 1 0.00
21 1 20-21 0.0000 1 0.00 0.0000 1 0.00
22 1 21-22 0.0000 1 0.00 0.0000 1 0.00
23 1 22-23 0.0000 1 0.00 0.0000 1 0.00
24 1 23-24 0.0000 1 0.00 0.0000 1 0.00
25 1 24-25 0.0000 1 0.00 0.0000 1 0.00
26 1 25-26 0.0000 1 0.00 0.0000 1 0.00
27 1 26-27 0.0000 1 0.00 0.0000 1 0.00
28 1 27-28 0.0000 1 0.00 0.0000 1 0.00
29 1 28-29 0.0000 1 0.00 0.0000 1 0.00
30 1 29-30 0.0000 1 0.00 0.0000 1 0.00
Total Increased Cancer Risk 1.7 0.03
* Third trimester of pregnancy

141 3rd Avenue, Daly City, CA - Construction Impacts - Without Mitigation Maximum DPM Cancer Risk and PM2.5 Calculations From Construction Impacts at Milestone Academy Preschool (2 years and oler) - 1.0 meters - Child Exposure Student Cancer Risk (per million) = CPF x Inhalation Dose x ASF x ED/AT x 1.0E6 Where: CPF = Cancer potency factor (mg/kg-day)-1
ASF = Age sensitivity factor for specified age group
ED = Exposure duration (years)
AT = Averaging time for lifetime cancer risk (years)
Inhalation Dose = Cair x SAF x 8-Hr BR x A x (EF/365) x 10-6 Where: Cair = concentration in air (μg/m3)
SAF = Student Adjustment Factor (unitless)
= (24 hrs/9 hrs) x (9 hrs/8 hrs) = 3
8-Hr BR = Eight-hour breathing rate (L/kg body weight-per 8 hrs) A = Inhalation absorption factor
EF = Exposure frequency (days/year)
10-6 = Conversion factor
Values
Infant School Child Adult
Age --> 0 - <2 2 - <16 16 - 30
Parameter
ASF = 10 3 1
CPF = 1.10E+00 1.10E+00 1.10E+00
8-Hr BR* = 1200 520 240
A = 1 1 1
EF = 250 250 250
AT = 70 70 70
SAF = 1.00 3.00 1.00
* 95th percentile 8-hr breathing rates for moderate intensity activities Construction Cancer Risk by Year - Maximum Impact Receptor Location Child - Exposure Information Child
Exposure Age* Cancer
Exposure Duration DPM Conc (ug/m3) Sensitivity Risk Hazard Fugitive Total Year (years) Age Year Annual Factor (per million) Index PM2.5 PM2.5 1 1 2 - 3 2021-2022 0.0188 3 0.95 0.00377 0.00289 0.0217 Total Increased Cancer Risk 0.9
* Children assumed to be 2 years of age and older
Maximum

Attachment 5: Community Risk Modeling Information and Calculations

BAAQMD Raster Screening Cancer Risk at MEI
BAAQMD Raster Screening PM2.5 Concentration at MEI

BAAQMD Raster Screening Cancer Risk at Project Site
BAAQMD Raster Screening PM2.5 Concentration at Project Site

Date of Request 1/20/2021
Contact Name Casey DivineAffiliation Illingworth & Rodkin, Inc.Phone 707‐794‐0400 x103Email [email protected]
Project Name 141 3rd AveAddress 141 3rd AveCity Daly CityCounty San MateoType (residential, commercial, mixed use, industrial, etc.) ResidentialProject Size (# of units or building square feet) 15 du Table A: Requester Contact Information
Comments:

Risk & Hazard Stationary Source Inquiry FormThis form is required when users request stationary source data from BAAQMDThis form is to be used with the BAAQMD's Google Earth stationary source screening tables.

Click here for guidance on coducting risk & hazard screening, including roadways & freeways, refer to the District's Risk & Hazard Analysis flow chart.

Click here for District's Recommended Methods for Screening and Modeling Local Risks and Hazards document.

For Air District assistance, the following steps must be completed:

1. Complete all the contact and project information requested in  . Incomplete forms will not be processed. Please include a project site map.

2. Download and install the free program Google Earth, http://www.google.com/earth/download/ge/,  and then download the county specific Google Earth stationary source application files  from the District's website, http://www.baaqmd.gov/Divisions/Planning‐and‐Research/CEQA‐GUIDELINES/Tools‐and‐ Methodology.aspx. The small points on the map represent stationary sources permitted by the District (Map A on right). These permitted sources include diesel back‐up generators, gas stations, dry cleaners, boilers, printers, auto spray booths, etc. Click on a point to view the source's Information Table, including the name, location, and preliminary estimated cancer risk, hazard index, and PM2.5 concentration.3. Find the project site in Google Earth by inputting the site's address in the Google Earth search box.4. Identify stationary sources within at least a 1000ft radius of project site. Verify that the location of the source on the map matches with the source's address in the Information Table, by using the Google Earth address search box to confirm the source's address location. Please report any mapping errors to the District.5. List the stationary source information in  blue section only.

6. Note that a small percentage of the stationary sources have Health Risk Screening Assessment (HRSA) data INSTEAD of screening level data. These sources will be noted by an asterisk next to the Plant Name (Map B on right). If HRSA values are presented, these values have already been modeled and cannot be adjusted further.7. Email this completed form to District staff.  District staff will provide the most recent risk, hazard, and PM2.5 data that are available for the source(s). If this information or data are not available, source emissions data will be provided. Staff will respond to inquiries within three weeks.

Note that a public records request received for the same stationary source information will cancel the processing of your SSIF request.

Table A: Requester Contact Information
Table B
Table A

Construction MEI
Distance from
Receptor (feet) or
MEI1 Plant No. Facility Name Address Cancer Risk2 Hazard Risk2 PM2.52 Source No.3 Type of Source4 Fuel Code5 Status/Comments Distance
Adjustment
Multiplier
Adjusted
Cancer Risk
Estimate
Adjusted
Hazard
Risk
Adjusted
PM2.5
1000 3603 Colma Auto Body Shop Inc 7252 Mission St ‐‐ 0.00001 ‐‐ Auto Body Coating 2018 Dataset 0.13 #VALUE! 0.000002 #VALUE!1000 14858 D&J Auto Body Specialists  Inc 7232 Mission St ‐‐ 0.001 ‐‐ Auto Body Coating 2018 Dataset 0.13 #VALUE! 0.0002 #VALUE!970 20658 19th Auto Body Center 7323 Mission St ‐‐ 0.0003 ‐‐ Auto Body Coating 2018 Dataset 0.14 #VALUE! 0.00004 #VALUE!400 112293 Hillside Shell 950 Hillside Blvd 60.19 0.26 ‐‐ Gas Dispensing Facility 2018 Dataset 0.07 4.0 0.02 #VALUE! Footnotes: Project Site

1. Maximally exposed individual
Distance from
Receptor
(feet) or MEI1 FACID (Plant No.)
Distance
Adjustment
Multiplier
Adjusted
Cancer Risk
Estimate
Adjusted
Hazard
Risk
Adjusted
PM2.5
950 3603 0.14 #VALUE! 0.000002 #VALUE!990 14858 0.13 #VALUE! 0.0002 #VALUE!750 20658 0.21 #VALUE! 0.0001 #VALUE!210 112293 Used Health Risk Calculator 0.6 0.003 0.0000
c. BAAQMD Reg 11 Rule 16 required that all co‐residential (sharing a wall, floor, ceiling or is in the same building as a residential unit) dry cleaners cease use of perc on July 1, 2010.

Date last updated: 03/13/20182. These Cancer Risk, Hazard Index, and PM2.5 columns represent the values in the Google Earth Plant Information Table.3. Each plant may have multiple permits and sources. f. Unless otherwise noted, exempt sources are considered insignificant. See BAAQMD Reg 2 Rule 1 for a list of exempt sources.g. This spray booth is considered to be insignificant.

4. Permitted sources include diesel back‐up generators, gas stations, dry cleaners, boilers, printers, auto spray booths, etc.11. Further information about common sources:
a. Sources that only include diesel internal combustion engines can be adjusted using the BAAQMD's Diesel Multiplier worksheet. b. The risk from natural gas boilers used for space heating when <25 MM BTU/hr would have an estimated cancer risk of one in a million or less, and a chronic hazard index of 0.003 Therefore, there is no cancer risk, hazard or PM2.5 concentrations from co‐residential dry cleaning businesses in the BAAQMD. d. Non co‐residential dry cleaners must phase out use of perc by Jan. 1, 2023. Therefore, the risk from these dry cleaners does not need to be factored in over a 70‐year period, but instead should e. Gas stations can be adjusted using BAAQMD's Gas Station Distance Mulitplier worksheet.

6. If a Health Risk Screening Assessment (HRSA) was completed for the source, the application number will be listed here.7. The date that the HRSA was completed.8. Engineer who completed the HRSA. For District purposes only.9. All HRSA completed before 1/5/2010 need to be multiplied by an age sensitivity factor of 1.7.10. The HRSA "Chronic Health" number represents the Hazard Index.5. Fuel codes: 98 = diesel, 189 = Natural Gas.

Table B: Google Earth data

Gasoline Station Calculator
Permitted max throughput for 2020: 3,000,000 gallons/year BAAQMD Evaluation
Controlled Rate (for all activities) = 0.67 lbs/103
gal throughput
Estimated Project Throughput 3000 103
gal/year
Annual VOC Emissions             pounds/year 5.5 2,010                    pounds/day tons/year 1.01
Annual TAC Emissions Factors 0.01               0.030               pounds/day Benzene 0.00284 lbs/1000gal 0.00               tons/year               pounds/day 0.023 Ethylbenzene 0.00405 lbs/1000gal 0.01               tons/year               pounds/day 0.033 Hexane 0.0112 lbs/1000gal 0.02               tons/year               pounds/day 0.092 Toluene 0.0272 lbs/1000gal 0.04               tons/year               pounds/day 0.224 Xylene 0.0227 lbs/1000gal 0.03               tons/year               pounds/day 0.187 Source:  BAAQMD SSIF Request for I&R Project 20‐185 141 3rd Avenue (SSIF received 01/21/2021 A Flores)

Plant Name no
Plant No. yes
Note: Default generic distance multiplier used if source is not a generator or gas station.

Step 5:

Read

0.583 per
1,000,000
65 0.003

0.000 µg/m3
Step 3:

Enter Emissions Data
Chemical Name CAS No. Rate Risk Hazard Concentration
(dashes removed) (lb/day) (# / 1,000,000) (index) (µg/m3) Fine Particulate Matter (PM2.5)
1,1,1‐Trichloroethane 71556 0.00E+00
1,1,2,2‐Tetrachloroethane 79345 0.00E+00
1,1,2‐Trichloroethane 79005 0.00E+00
1,1‐Dichloroethane 75343 0.00E+00
1,1‐Dichloroethylene 75354 0.00E+00
1,2,3,4,6,7,8,9‐Octachlorodibenzo‐p‐dioxin 3268879 0.00E+00 1,2,3,4,6,7,8,9‐Octachlorodibenzofuran 39001020 0.00E+00 1,2,3,4,6,7,8‐Heptachlorodibenzo‐p‐dioxin 35822469 0.00E+00 1,2,3,4,6,7,8‐Heptachlorodibenzofuran 67562394 0.00E+00 1,2,3,4,7,8,9‐Heptachlorodibenzofuran 55673897 0.00E+00 1,2,3,4,7,8‐Hexachlorodibenzo‐p‐dioxin 39227286 0.00E+00 1,2,3,4,7,8‐Hexachlorodibenzofuran 70648269 0.00E+00
1,2,3,6,7,8‐Hexachlorodibenzo‐p‐dioxin 57653857 0.00E+00 1,2,3,6,7,8‐Hexachlorodibenzofuran 57117449 0.00E+00 1,2,3,7,8,9‐Hexachlorodibenzo‐p‐dioxin 19408743 0.00E+00 1,2,3,7,8,9‐Hexachlorodibenzofuran 72918219 0.00E+00 1,2,3,7,8‐Pentachlorodibenzo‐p‐dioxin 40321764 0.00E+00 1,2,3,7,8‐Pentachlorodibenzofuran 57117416 0.00E+00 1,2‐Dibromo‐3‐chloropropane 96128 0.00E+00 1,2‐Dibromoethane 106934 0.00E+00 1,2‐Dichloroethane 107062 0.00E+00
1,2‐Epoxybutane 106887 0.00E+00
1,3‐Butadiene 106990 0.00E+00
1,3‐Propane sultone 1120714 0.00E+00
1,4‐Dichlorobenzene 106467 0.00E+00
1,4‐Dioxane 123911 0.00E+00
1,6‐Dinitropyrene 42397648 0.00E+00
1,8‐Dinitropyrene 42397659 0.00E+00
1‐Nitropyrene 5522430 0.00E+00
2',3,4,4',5‐PeCB 65510443 0.00E+00
2,3',4,4',5,5'‐HxCB 52663726 0.00E+00
2,3',4,4',5‐PeCB 31508006 0.00E+00
2,3,3',4,4',5'‐HxCB 69782907 0.00E+00
2,3,3',4,4',5,5'‐HpCB 39635319 0.00E+00
2,3,3',4,4',5‐HxCB 38380084 0.00E+00
2,3,3',4,4'‐PeCB 32598144 0.00E+00
2,3,4,4',5‐PeCB 74472370 0.00E+00
2,3,4,6,7,8‐hexachlorodibenzofuran 60851345 0.00E+00
2,3,4,7,8‐Pentachlorodibenzofuran 57117314 0.00E+00
2,3,7,8‐Tetrachlorodibenzo‐p‐dioxin and related comp 1746016 0.00E+00 2,3,7,8‐Tetrachlorodibenzofuran 51207319 0.00E+00
2,4,6‐Trichlorophenol 88062 0.00E+00
2,4‐Diaminoanisole 615054 0.00E+00
2,4‐Diaminotoluene 95807 0.00E+00
2,4‐Dinitrotoluene 121142 0.00E+00
2‐Aminoanthraquinone 117793 0.00E+00
2‐Nitrofluorene 607578 0.00E+00
3,3',4,4',5,5'‐HxCB 32774166 0.00E+00
3,3',4,4',5‐PeCB 57465288 0.00E+00
3,3',4,4'‐TCB 32598133 0.00E+00
3,3‐Dichlorobenzidine 91941 0.00E+00
3,4,4'5‐TCB 70362504 0.00E+00
3‐Methylcholanthrene 56495 0.00E+00
4,4‐Methylene bis(2‐chloroaniline) 101144 0.00E+00
4,4‐Methylenedianiline 101779 0.00E+00
4‐Chloro‐ortho‐phenylenediamine 95830 0.00E+00
4‐Dimethylaminoazobenzene 60117 0.00E+00
4‐Nitropyrene 57835924 0.00E+00
5‐Methylchrysene 3697243 0.00E+00
What is the distance (m) from the facility boundary to the MEI?
Step 2:

Estimate Distance
Step 4:

Specify Source Type
Does facility have only diesel
backup generators?
Is this analysis for a
gas station?
Step 1:

Enter Facility Data
Hillside Shell
112293
Total
Cancer Risk
Total
Chronic Hazard
Total PM2.5
Concentration

5‐Nitroacenaphthene 602879 0.00E+00
6‐Nitrochrysene 7496028 0.00E+00
7,12‐Dimethylbenz(a)anthracene 57976 0.00E+00
7H‐dibenzo(c,g)carbazole 194592 0.00E+00
Acetaldehyde 75070 0.00E+00
Acetamide 60355 0.00E+00
Acrolein 107028 0.00E+00
Acrylamide 79061 0.00E+00
Acrylic Acid 79107 0.00E+00
Acrylonitrile 107131 0.00E+00
Allyl chloride 107051 0.00E+00
Ammonia 7664417 0.00E+00
Aniline 62533 0.00E+00
Arsenic 7440382 0.00E+00
Arsine 7784421 0.00E+00
Asbestos [1/(100 PCM fibers/m^3)]^‐1 1332214 0.00E+00
Benz(a)anthracene 56553 0.00E+00
Benzene 71432 2.33E‐02 2.99E+00 1.47E‐02
Benzidine 92875 0.00E+00
Benzo(a)pyrene 50328 0.00E+00
Benzo(b)fluoranthene 205992 0.00E+00
Benzo(j)fluoranthene 205823 0.00E+00
Benzo(k)fluoranthene 207089 0.00E+00
Benzyl Chloride 100447 0.00E+00
Beryllium 7440417 0.00E+00
Bis(2‐chloroethyl) Ether 111444 0.00E+00
Bis(2‐chloromethyl) Ether 542881 0.00E+00
Cadmium 7440439 0.00E+00
Caprolactam 105602 0.00E+00
Carbon Disulfide 75150 0.00E+00
Carbon Monoxide 630080 0.00E+00
Carbon Tetrachloride 56235 0.00E+00
Carbonyl Sulfide 463581 0.00E+00
Chlorinated paraffins (Avg. chain length C12; approx. 60 108171262 0.00E+00 Chlorine 7782505 0.00E+00
Chlorine Dioxide 10049044 0.00E+00
Chlorite 7758192 0.00E+00
Chlorobenzene 108907 0.00E+00
Chlorodibromomethane 124481 0.00E+00
Chloroethane (Ethyl Chloride) 75003 0.00E+00
Chloroform 67663 0.00E+00
Chloropicrin 76062 0.00E+00
Chromic Trioxide 1333820 0.00E+00
Chromium‐hexavalent 18540299 0.00E+00
Barium chromate2 10294403 0.00E+00
Calcium chromate2 13765190 0.00E+00
Lead chromate2 7758976 0.00E+00
Sodium dichromate2 10588019 0.00E+00
Strontium chromate2 7789062 0.00E+00
CHROMIC TRIOXIDE (as chromic acid mist) 1333820 0.00E+00 Chrysene 218019 0.00E+00
Copper 7440508 0.00E+00
Copper and Copper Compounds 7440508 0.00E+00
Cresol Mixtures 1319773 0.00E+00
Cupferron 135206 0.00E+00
Cyanide 57125 0.00E+00
Di(2‐ethylhexyl)phthalate 117817 0.00E+00
Dibenz(a‐h)acridine 226368 0.00E+00
Dibenz(a‐h)anthracene 53703 0.00E+00
Dibenz(a‐j)acridine 224420 0.00E+00
Dibenzo(a‐e)pyrene 192654 0.00E+00
Dibenzo(a‐h)pyrene 189640 0.00E+00
Dibenzo(a‐i)pyrene 189559 0.00E+00
Dibenzo(a‐l)pyrene 191300 0.00E+00
Diesel Exhaust Particulate 85105 0.00E+00
Diethanolamine 111422 0.00E+00
Dimethylformamide 68122 0.00E+00
Direct Black 38 (Technical Grade) 1937377 0.00E+00
Direct Blue 6 (Technical Grade) 2602462 0.00E+00
Direct Brown 95 (Technical Grade) 16071866 0.00E+00
Epichlorohydrin 106898 0.00E+00
Ethylbenzene 100414 3.33E‐02 3.70E‐01 3.15E‐05
Ethylene Glycol 107211 0.00E+00
Ethylene Glycol Monobutyl Ether 111762 0.00E+00
Ethylene Glycol Monoethyl Ether 110805 0.00E+00
Ethylene Glycol Monoethyl Ether Acetate 111159 0.00E+00 Ethylene Glycol Monomethyl Ether 109864 0.00E+00
Ethylene Glycol Monomethyl Ether Acetate 110496 0.00E+00 Ethylene Oxide 75218 0.00E+00

Ethylene Thiourea 96457 0.00E+00
Fluorides 1101 0.00E+00
Formaldehyde (gas) 50000 0.00E+00
Glutaraldehyde 111308 0.00E+00
Hexachlorobenzene 118741 0.00E+00
Hexachlorocyclohexane (Technical Grade) 608731 0.00E+00 Hexachlorocyclohexane‐ Alpha Isomer 319846 0.00E+00
Hexachlorocyclohexane‐ Beta Isomer 319857 0.00E+00
Hexachlorocyclohexane‐ Gamma Isomer 58899 0.00E+00
Hydrazine 302012 0.00E+00
Hydrogen Chloride 7647010

0.00E+00
Hydrogen Cyanide 74908 0.00E+00
Hydrogen Fluoride 7664393 0.00E+00
Hydrogen Selenide 7783075 0.00E+00
Hydrogen Sulfide 7783064 0.00E+00
Indeno(1‐2‐3‐c‐d)pyrene 193395 0.00E+00
Isophorone 78591 0.00E+00
Isopropyl Alcohol 67630 0.00E+00
Lead Acetate 301042 0.00E+00
Lead and Lead Compounds 7439921 0.00E+00
Lead Phosphate 7446277 0.00E+00
Lead Subacetate 1335326 0.00E+00
m‐CRESOL 108394 0.00E+00
m‐XYLENE 108383 0.00E+00
Maleic Anhydride 108316 0.00E+00
Manganese & Manganese Compounds 7439965 0.00E+00
Mercury (Inorganic) 7439976 0.00E+00
Mercuric chloride 7487947 0.00E+00
Methanol 67561 0.00E+00
Methyl Bromide 74839 0.00E+00
Methyl Ethyl Ketone 78933 0.00E+00
Methyl Isocyanate 624839 0.00E+00
Methyl Tertiary Butyl Ether 1634044 0.00E+00
Methylene Chloride (Dichloromethane) 75092 0.00E+00
Methylene Diphenyl Isocyanate (MDI) 101688 0.00E+00
Michlers Ketone 90948 0.00E+00
n‐Hexane 110543 9.21E‐02 2.49E‐05
n‐Nitroso‐n‐methylethylamine 10595956 0.00E+00
n‐Nitrosodi‐n‐Butylamine 924163 0.00E+00
n‐Nitrosodi‐n‐Propylamine 621647 0.00E+00
n‐Nitrosodiethylamine 55185 0.00E+00
n‐Nitrosodimethylamine 62759 0.00E+00
n‐Nitrosodiphenylamine 86306 0.00E+00
n‐Nitrosomorpholine 59892 0.00E+00
n‐Nitrosopiperidine 100754 0.00E+00
n‐Nitrosopyrrolidine 930552 0.00E+00
Naphthalene 91203 0.00E+00
Nickel and Nickel Compounds 7440020 0.00E+00
Nickel acetate 373024 0.00E+00
Nickel carbonate 3333673 0.00E+00
Nickel carbonyl 13463393 0.00E+00
Nickel hydroxide 12054487 0.00E+00
Nickelocene 1271289 0.00E+00
Nickel Oxide 1313991 0.00E+00
Nickel Refinery Dust 1146 0.00E+00
Nickel Subsulfide 12035722 0.00E+00
Nitric Acid 7697372 0.00E+00
Nitrogen Dioxide 10102440 0.00E+00
o‐CRESOL 95487 0.00E+00
o‐XYLENE 95476 0.00E+00
Oleum 8014957 0.00E+00
Ozone 10028156 0.00E+00
p‐Chloro‐o‐toluidine 95692 0.00E+00
p‐Cresidine 120718 0.00E+00
p‐CRESOL 106445 0.00E+00
p‐Nitrosodiphenylamine 156105 0.00E+00
p‐XYLENE 106423 0.00E+00
Pentachlorophenol 87865 0.00E+00
Perchloroethylene 127184 0.00E+00
Phenol 108952 0.00E+00
Phosgene 75445 0.00E+00
Phosphine 7803512 0.00E+00
Phosphoric Acid 7664382 0.00E+00
Phthalic Anhydride 85449 0.00E+00
Polychlorinated Biphenyls 1336363 0.00E+00
Potassium Bromate 7758012 0.00E+00
Propylene 115071 0.00E+00

Propylene Glycol Monomethyl Ether 107982 0.00E+00
Propylene oxide 75569 0.00E+00
Selenium 7782492 0.00E+00
Selenium sulfide 7446346 0.00E+00
Silica (crystalline, respirable) 7631869 0.00E+00
Sodium hydroxide 1310732 0.00E+00
Styrene 100425 0.00E+00
Sulfates 9960 0.00E+00
Sulfur Dioxide 7446095 0.00E+00
Sulfuric Acid 7664939 0.00E+00
Sulfur Trioxide 7446719 0.00E+00
Tertiary‐butyl acetate 540885 0.00E+00
Tetrachloroethylene 127184 0.00E+00
Thioacetamide 62555 0.00E+00
Toluene 108883 2.24E‐01 1.41E‐03
Toluene Diisocyanates 26471625 0.00E+00
Toluene Diisocyanates (2,4 and 2, 6) 584849 0.00E+00
Toluene Diisocyanates (2,4 and 2, 6) 91087 0.00E+00
Trichloroethylene 79016 0.00E+00
Triethylamine 121448 0.00E+00
Urethane 51796 0.00E+00
Vanadium pentoxide 1314621 0.00E+00
Vinyl acetate 108054 0.00E+00
Vinyl chloride 75014 0.00E+00
Xylenes (technical mixture of m, o, p‐isomers) 1330207 1.87E‐01 5.04E‐04 Vanadium 7440622 0.00E+00
TOTAL UNADJUSTED Risk Values 3.355 0.017 0.000

treanorhl.com

TREANORHL
141 3RD AVENUE, DALY CITY, CALIFORNIA

HISTORIC RESOURCES EVALUATION

DRAFT
JANUARY 15, 2021

treanorhl.com
Table of Contents

1. INTRODUCTION ............................................................................................................................................ 3

2. SUMMARY OF FINDINGS .............................................................................................................................. 3

3. METHODOLOGY ........................................................................................................................................... 3

4. PROPOSED PROJECT DESCRIPTION ........................................................................................................... 3

5. PROPERTY DESCRIPTION ............................................................................................................................. 3

6. ARCHITECTURAL STYLES .............................................................................................................................. 6

7. SITE HISTORY ................................................................................................................................................ 6

8. HISTORIC CONTEXT ..................................................................................................................................... 8

9. ARCHITECT/BUILDER .................................................................................................................................. 10

10. OCCUPANCY HISTORY ............................................................................................................................... 10

11. REGULATORY FRAMEWORK ...................................................................................................................... 10 California Register of Historical Resources Criteria ...................................................................................... 11 Local Eligibility ............................................................................................................................................. 12

12. SIGNIFICANCE EVALUATION ..................................................................................................................... 12 Current Historic Status ................................................................................................................................. 12 CRHR Significance Evaluation ...................................................................................................................... 12

13. CONCLUSION ............................................................................................................................................. 13 BIBLIOGRAPHY ....................................................................................................................................................... 14 APPENDIX ............................................................................................................................................................... 15

Project Name: 141 3rd Avenue Daly City HRE
Historic Resources Evaluation - DRAFT
Project No: HP0639.2009.00
January 15, 2020
treanorhl.com

1. INTRODUCTION
David J. Powers & Associates has requested that TreanorHL assess the property located at 141 3rd Avenue in Daly City (APN 006254030) for its eligibility as a historic resource as defined by the California Environmental Quality Act (CEQA). A proposed project would demolish the existing single-family house on the parcel and construct new townhomes. The parcel has not been identified on any national, state, county, or city historic resources inventory. Daly City does not maintain any local criteria for evaluation and relies on the California Register of Historical Resources (CRHR) criteria for determining eligibility of historic resources. The following report provides an evaluation of the subject property’s potential eligibility to be individually listed in the CRHR.

2. SUMMARY OF FINDINGS
Upon completion of the survey and archival work, the property at 141 3rd Avenue in Daly City appears individually eligible for listing on the CRHR under Criterion 1 for its association with the Italian flower industry in Daly City and the Bay Area. The period of significance is from ca. 1920 to ca. 1945 when it was owned and/or operated by Italian nurseryman Valentino Tosetti. However, the property does not retain sufficient integrity to communicate its significance since the integrity of feeling, association, and setting has been significantly diminished after demolition of the greenhouses in the 1970s. Therefore, the property is not eligible as a historic resource as defined by CEQA.

3. METHODOLOGY
TreanorHL conducted a site visit on December 9, 2020 to evaluate the existing conditions, historic features, and architectural significance of the property. Due to the Covid-19 shelter-in-place order, TreanorHL was not able to conduct in-person research at local libraries or archives. In order to evaluate the historic significance of the properties, available online research was completed including consultation of local city directories, Sanborn fire insurance maps, historical aerials and photographs, newspaper articles, County of San Mateo Assessor-County Clerk-Recorder, Daly City Building Division, and various other online repositories.

4. PROPOSED PROJECT DESCRIPTION
The project proposes a General Plan amendment for a rezoning of the 0.71-acre project site at 141 3rd Avenue.

The existing house on the parcel will be demolished and 15 new three-story townhomes, each with a two-car tandem garage, will be constructed. The project would include a 120-foot hammerhead dead-end fire apparatus turn-around access road, associated private driveways, landscaping, and civil and utility improvements.1

5. PROPERTY DESCRIPTION
The 141 3rd Avenue property is located in Daly City, three blocks east of Mission Street—the north-south arterial running through the city. Located on the western side of the block bounded by Castle Street to the north, 3rd Avenue to the west, E. Market Street to the south, and Hillside Boulevard to the east, the subject property is an irregularly shaped lot. A single-family house stands at the north end and the rest of the parcel remains vacant. 1 Project information received from David J. Powers & Associates, Inc. via email on December 16, 2020.