Mountain View City Council
March 14, 2023

Resolution No. 18773

CITY OF MOUNTAIN VIEW
RESOLUTION NO. 18773
SERIES 2023

A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF MOUNTAIN VIEW

ADOPTING THE INITIAL STUDY/ MITIGATED NEGATIVE DECLARATION FOR

THE TERRA BELLA PUBLIC STORAGE AND ALTA HOUSING AFFORDABLE HOUSING PROJECTS LOCATED AT 1020 TERRA BELLA AVENUE, 1040 TERRA BELLA AVENUE, AND 1055 SAN LEANDRO AVENUE PURSUANTTO

THE CALIFORNIA ENVIRONMENTAL QUALITY ACT
WHEREAS, prior to the adoption of this Resolution, the City of Mountain View prepared an Initial Study and approved for circulation a Mitigated Negative Declaration for the Terra Bella Public Storage and Alta Housing Project ( the " Initial Study/ Mitigated Negative Declaration") in accordance with the requirements of the California Environmental Quality Act of 1970, together with State guidelines implementing said Act, all as amended to date ( collectively " CEQA"); and WHEREAS, the Terra Bella Public Storage and Alta Housing Projects located at 1020 Terra Bella Avenue, 1040 Terra Bella Avenue, and 1055 San Leandro Avenue ( the " Project") analyzed under the Initial Study/ Mitigated Negative Declaration include an amendment to the General Plan Land Use Map from General Industrial to High - Density Residential for 1020 Terra Bella Avenue, a General Plan Text Amendment to increase the floor area ratio ( FAR) from 0. 55 FAR to

2. 5 FAR in the General Industrial Designation for projects proposing land uses with few employees and customers and significant public benefits toward affordable housing, a Zoning Map Amendment from the MM ( General Industrial) Zoning District to the P ( Planned Community) District for 1020 Terra Bella Avenue, 1040 Terra Bella Avenue, and 1055 San Leandro Avenue to construct two personal storage buildings with at -grade parking, and a six -story affordable housing development with 106 affordable rental units and two manager' s units with a two-story parking garage and including a density bonus and concession under State Density Bonus Law. A more detailed description of the Project is set forth in the Initial Study/ Mitigated Negative Declaration; and
WHEREAS, the draft Initial Study/ Mitigated Negative Declaration was made available and circulated for public comment from November 28, 2022 through December 28, 2022; and WHEREAS, the City of Mountain View considered the comments received during the public review period and prepared a final Initial Study/ Mitigated Negative Declaration, which includes minor text changes from the draft Initial Study/ Mitigated Negative Declaration in response to a letter from the Department of Toxic Substance Control and other clarifying text modifications to the project details; and
1-
Resolution No. 18773

WHEREAS, the Initial Study/ Mitigated Negative Declaration concluded that implementation of the Project with mitigation measures and City standard conditions of approval will not have a significant effect on the environment; and
WHEREAS, the City of Mountain View is the lead agency on the Project, and the City Council is the decision -making body for the proposed approval of the Project; and WHEREAS, the City Council has reviewed and considered the Initial Study/ Mitigated Negative Declaration together with comments received and intends to take actions on the Project in compliance with CEQA; and
WHEREAS, the Initial Study/ Mitigated Negative Declaration for the Project is attached hereto and incorporated herein as Exhibit A; and
WHEREAS, the response to public comments and text modifications to the Initial Study is attached hereto and incorporated herein as Exhibit B; and WHEREAS, the Mitigation Monitoring and Reporting Program is attached hereto and incorporated herein as Exhibit C; now, therefore, be it RESOLVED: by the City Council of the City of Mountain View:

1. That the City Council finds the Initial Study/ Mitigated Negative Declaration prepared for the Project has been completed in compliance with CEQA.

2. That the City Council finds on the basis of the whole record before it, including the Initial Study/ Mitigated Negative Declaration and the comments received, that there is no substantial evidence that the Project will have a significant effect on the environment.

3. That the City Council finds the Initial Study/ Mitigated Negative Declaration reflects the independent judgment and analysis of the City of Mountain View.

4. That the City Council hereby designates the Community Development Director, at 500 Castro Street, First Floor, Mountain View, California, 94041, as the custodian of documents and records of proceedings on which this decision is based.

5. That the City Council hereby adopts the Mitigated Negative Declaration for the Project.
2-
Resolution No. 18773

The foregoing resolution was regularly introduced and adopted at a Regular Meeting of the City Council of the City of Mountain View, duly held on the 14th day of March 2023, by the following vote:

AYES: Councilmembers Abe- Koga, Kamei, Matichak, Ramirez, Ramos, Vice Mayor Showalter, and Mayor Hicks
NOES: None
ABSENT: None
ATTEST: APPROVED:

Q

HEAT ER GLASER

CITY ERK
EM/ 6/ RESO
808- 02- 01- 23r

ALI HICKS
MAYOR
Pursuant to Mountain View Charter § 709( b), I do hereby certify that the foregoing is an original or a correct copy of the Resolution passed and adopted by the City Council of the City of Mountain View at a Regular Meeting held on the 14th day of Varch 2023, by the foregoing vote.

City
Clerk City of M untain View
Exhibit: A. Initial Study/ Mitigated Negative Declaration B. Response to Public Comments
C. Mitigation Monitoring and Reporting Program
3-
Resolution No. 18773

Exhibit A
Initial Study
Terra Bella Public Storage & ALTA Housing Project
xo
L I ;%
f-, Ll
City of
loor Mountain View
410111
In Consultation with

DAVID I POWERS
November 2122
Resolution No. 18773

Draft Mitigated Negative Declaration Page 1
Terra Bella Public Storage & ALTA Housing Project
Draft Mitigated Negative Declaration
Project: Terra Bella Public Storage & ALTA Housing Project Lead Agency:

Edgar Maravilla
City of Mountain View
500 Castro Street, Mountain View, CA 94041
Email: Edgar.Maravilla2mountainview. gov
Phone Number: ( 650) 903- 6321
Project Proponents:

Bryan Miranda
Public Storage
701 Western Avenue, Glendale, CA 91201
Email: bmiranda ublicstorage. com
Phone Number: ( 818) 244- 8080
Carlos Castellanos
Alta Housing
3460 West Bayshore Road, Suite 104, Palo Alto, CA 94303 Email: ccastellanos2altahousing. org
Phone Number: ( 650) 321- 9709
Availability ofthe Initial Study:

The Initial Study for this Mitigated Negative Declaration is attached and available for review on the City' s website at the following web address:
hops: //www. mountainview. gov/depts/ comdey/ planning/ activeproi ects/ cega. asp Project Location and Description:

The approximately 4. 8- acre project site is located at 1020 and 1040 Terra Bella Avenue and 1055 San Leandro Avenue in the City of Mountain View (Assessor' s Parcel Numbers [ APNs] 153- 15- 030, 153- 15- 002, and 153- 15- 021).

The proj ect proposes a property transfer between the proj ect site owners ( Alta Housing and Public Storage), a land donation of 0. 5- acre from Public Storage to Alta Housing, a General Plan Map and text amendment, Zoning map amendment, Planned Community Permit, Development Review Resolution No. 18773

Draft Mitigated Negative Declaration Page 2
Permit, Subdivision Permit, and Development Agreement in order to develop an updated storage facility and affordable, multi -family housing development. The General Plan Map amendment would change the General Plan land use designation for the portion of proj ect site with the proposed residential development from General Industrial to High Density Residential. The General Plan text amendment would increase the allowable development density on the storage facility portion of the project site that would remain under the existing General Industrial land use designation. The entire project site would be rezoned to Planned Community ( P) District with site -specific development standards to allow for the proposed storage facility and residential development. The State Density Bonus Law permits the proposed residential density and parking reduction proposed.

The project would demolish a total of 77,418 square feet of existing storage facility space to construct a new six -story ( up to 70 feet to the top of roof and 80 feet to top of penthouse) residential apartment building with 108, 100 percent affordable units ( excluding two manager' s units) and an above grade parking garage. The project would also construct two new storage facility buildings: 1) a six -story, approximately 285, 012 square foot building ( including up to one manager' s unit) with a maximum height of 84'- 7") and a four- story, approximately 123, 952 square foot building with a maximum height of 63'- 3".

Refer to the Initial Study for additional details on the project components.

Proposed Findings:

The City has prepared the attached Initial Study and determined that the analysis in the Initial Study identifies potentially significant project effects, but:

1. Mitigation measures required by the City, and agreed to by the applicant, would avoid or mitigate the effects to a point where no significant effects would occur; and

2. There is no substantial evidence, in light ofthe whole record before the agency, that the project with implementation of mitigation measures may have a significant effect on the environment. Pursuant to California Environmental Quality Act (CEQA) Guidelines Sections 15064( f)(3) and 15070( b), a Mitigated Negative Declaration has been prepared for the proj ect.

Basis of Findings:

Based on the environmental evaluation presented in the attached Initial Study, the project would not cause significant adverse effects related to aesthetics, agricultural and forestry resources, biological resources, energy, geology and soils, hazards and hazardous materials, hydrology and water quality, land use/ planning, mineral resources, population and housing, public services, recreation, transportation, utilities/ service systems, and wildfire. The project does not have impacts that are individually limited, but cumulatively considerable. The environmental evaluation has determined that the project would have potentially significant impacts on air quality, cultural resources including tribal cultural resources), greenhouse gas emissions, and noise/ vibration and the implementation of the mitigation measures listed below would reduce impacts to a less than significant level.

Resolution No. 18773

Draft Mitigated Negative Declaration Page 3
Mitigation Measures:

Air Quality/Greenhouse Gas Emissions
MM AIR-1. 1: The project shall implement the below measures to control diesel particulate matter emissions during construction. This list of measures shall be incorporated into the approved building plan set.

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 NO,, and PM, 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 60 percent reduction in particulate matter exhaust in comparison to uncontrolled equipment; alternatively ( or in combination). Use of alternatively -fueled equipment with lower NOX emissions that meet the NOX and PM reduction requirements above. b. Use of electrical or non -diesel fueled equipment.

Alternatively,

2. The applicant may develop another construction operations plan demonstrating that the construction equipment used on -site would achieve a reduction in construction diesel particulate matter emissions by 60 percent or greater. Elements of the plan could include a combination of some of the following measures:

Implementation of No. 1 above to use Tier 4 or alternatively fueled equipment,
Installation of electric power lines during early construction phases to avoid use of diesel generators and compressors,
Use of electrically -powered equipment,
Forklifts and aerial lifts used for exterior and interior building construction shall be electric or propane/ natural gas powered, Change in construction build -out plans to lengthen phases, and Implementation of different building techniques that result in less diesel equipment usage.

Such a construction operations plan shall be prepared by an air quality expert and approved by the City prior to construction.

Resolution No. 18773

Draft Mitigated Negative Declaration Page 4
Cultural Resources/ Tribal Cultural Resources
MM CUL- 2. 1: Prior to ground -disturbing activities, a qualified archaeologist shall provide cultural resources training to all contractors and employees involved in trenching and excavation. The training shall inform participants how to recognize archaeological artifacts and deposits and discuss their obligations under the law and the project' s standard conditions of approval.

Noise/ Vibration
MM NOI- 2. 1: The following measures shall be implemented during construction to reduce vibration levels to 0. 5 in/ sec PPV or less at adjacent commercial/ industrial buildings south of the site:

Place operating equipment on the construction site as far as possible from vibration -sensitive receptors.

Use smaller vibratory rolling equipment, for example the Caterpillar model CP433E vibratory compactor, within 15 feet of the adjacent commercial/ industrial buildings south of the site to reduce vibration levels to 0. 5 in/ sec PPV or less.

Select demolition methods not involving impact tools.

Avoid dropping heavy equipment, such as a clam shovel drop, within 15 feet of the adjacent commercial/ industrial buildings south of the site, and use alternative methods for breaking up existing pavement, such as a pavement grinder.

Designate a person responsible for registering and investigating claims of excessive vibration. The contact information of such person shall be clearly posted on the construction site.

Resolution No. 18773

TABLE OF CONTENTS
Section 1. 0 Introduction and Purpose................................................................................................ I

1. 1 Purpose of the Initial Study.................................................................................................... 1

1. 2 Public Review Period............................................................................................................. 1

1. 3 Consideration of the Initial Study and Project........................................................................ 1

1. 4 Notice of Determination......................................................................................................... I Section 2. 0 Project Information......................................................................................................... 2

2. 1 Project Title............................................................................................................................ 2

2. 2 Lead Agency Contact............................................................................................................. 2

2. 3 Project Applicants................................................................................................................... 2

2. 4 Project Location...................................................................................................................... 2

2. 5 Assessor' s Parcel Numbers..................................................................................................... 6

2. 6 General Plan Designation and Zoning District....................................................................... 6

2. 7 Project -Related Approvals, Agreements, and Permits............................................................ 6 Section3. 0 Project Description.......................................................................................................... 7

3. 1 Residential Development...................................................................................................... 12

3. 2 Personal Storage Facility Development................................................................................ 14

3. 3 Landscaping.......................................................................................................................... 15

3. 4 Stormwater Treatment.......................................................................................................... 16

3. 5 Construction.......................................................................................................................... 16 Section 4. 0 Environmental Setting, Checklist, and Impact Discussion........................................... 18

4. 1 Aesthetics.............................................................................................................................. 19

4. 2 Agriculture and Forestry Resources..................................................................................... 28

4. 3 Air Quality............................................................................................................................ 31

4. 4 Biological Resources............................................................................................................ 52

4. 5 Cultural Resources................................................................................................................ 61

4. 6 Energy................................................................................................................................... 68

4. 7 Geology and Soils................................................................................................................. 75

4. 8 Greenhouse Gas Emissions................................................................................................... 85

4. 9 Hazards and Hazardous Materials........................................................................................ 93

4. 10 Hydrology and Water Quality............................................................................................ 107

4. 11 Land Use and Planning....................................................................................................... 118

4. 12 Mineral Resources.............................................................................................................. 121

4. 13 Noise................................................................................................................................... 123 Terra Bella Public Storage & ALTA Housing Project i
Initial Study
City of Mountain View November 2022
Resolution No. 18773

4. 14 Population and Housing......................................................................................................139

4. 15 Public Services................................................................................................................... 142

4. 16 Recreation........................................................................................................................... 149

4. 17 Transportation..................................................................................................................... 152

4. 18 Tribal Cultural Resources................................................................................................... 166

4. 19 Utilities and Service Systems............................................................................................. 169

4. 20 Wildfire...............................................................................................................................182

4. 21 Mandatory Findings of Significance.................................................................................. 183 Section5. 0 References................................................................................................................... 187 Section 6. 0 Lead Agency and Consultants..................................................................................... 193

6. 1 Lead Agency....................................................................................................................... 193

6. 2 Consultants......................................................................................................................... 193 Section 7. 0 Acronyms and Abbreviations...................................................................................... 195 Figures
Figure2. 4- 1: Regional Map................................................................................................................... 3 Figure2. 4- 2: Vicinity Map.................................................................................................................... 4 Figure2. 4- 3: Aerial Map....................................................................................................................... 5 Figure 3. 0- 1: Conceptual Ground Floor Residential Building Site Plan ............................................... 8 Figure 3. 0- 2: Conceptual Storage Facility Buildings Site Plan............................................................. 9 Figure 3. 0- 3: Conceptual Residential Building Elevations.................................................................. 10 Figure 3. 0- 4: Conceptual Storage Facility Buildings Elevations......................................................... 11 Figure 4. 3- 1: Locations of Off -Site Sensitive Receptors..................................................................... 35 Figure 4. 4- 1: Existing Tree Locations................................................................................................. 55 Figure 4. 13- 1: Noise Measurement Locations................................................................................... 129 Figure 4. 17- 1: Existing Transit Facilities.......................................................................................... 157 Figure 4. 17- 2: Existing Bicycle Facilities..........................................................................................160 Photos
Photo1 & Photo 2................................................................................................................................ 23 Photo3 & Photo 4................................................................................................................................ 24 Photo5 & Photo 6................................................................................................................................ 25 Terra Bella Public Storage & ALTA Housing Project ii Initial Study City of Mountain View November 2022
Resolution No. 18773

Tables
Table 3. 4- 1: Existing and Proposed Impervious/ Pervious Surfaces.................................................... 16 Table 4. 3- 1: Health Effects of Air Pollutants...................................................................................... 31 Table 4. 3- 2: BAAQMD Air Quality Significance Thresholds............................................................ 37 Table 4. 3- 3: Average Daily Construction Period Criteria Pollutant Emissions................................... 38 Table 4. 34: Operational Period Criteria Pollutant Emissions............................................................. 40 Table 4. 3- 5: Project Health Risk Impacts to the Off -Site MEI............................................................ 41 Table 4. 3- 6: Cumulative Health Risk Impacts to the Off -Site MEI.................................................... 44 Table 4. 3- 7: Cumulative Health Risk Effects to Future Residences in the Residential BuiWing ........ 47 Table

4.3- 8: Cumulative Health Risk Effects to Future Manager in Storage Building 1 .......49 Table

4.6- 1: Estimated Existing and Project Energy Usage................................................................ 73 Table

4.8- 1: Greenhouse Gas Reduction Plan Consistency................................................................. 92 Table

4.10- 1: Impervious Surface Acreage On-Site.......................................................................... 116 Table

4.13- 3: Summary of Long -Term Noise Measurement Data(dBA)......................................... 128 Table

4.13- 4: Summary of Short -Term Noise Measurement Data(dBA)......................................... 128 Appendices Appendix
A: Air Quality & Greenhouse Gas Assessment Appendix
B: 1020 Terra Bella Arborist Report Appendix
C: 1040 Terra Bella Arborist Report Appendix
D: Geotechnical Engineering Exploration and Analysis Appendix E: 1020 Terra Bella Phase IEnvironmental Site Assessment and Limited Phase II Subsurface Investigation Appendix
F:

G:
1020 Terra Bella Soil Vapor Survey Appendix
1040 Terra Bella Phase IEnvironmental Site Assessment Appendix H: Environmental Site Assessment Peer Review Appendix
I: 1040 Terra Bella Phase II Soil Vapor Evaluation Appendix J: Noise Assessment Appendix
K: Transportation Analysis Appendix
L: Transportation Demand Management Plan Appendix
M: Utility Impact Study Terra
Bella Public Storage & ALTA Housing Project iii Initial Study City of Mountain View November 2022
Resolution No. 18773

SECTION 1. 0 INTRODUCTION AND PURPOSE

1. 1 PURPOSE OF THE INITIAL STUDY
The City of Mountain View, as the Lead Agency, has prepared this Initial Study for the Terra Bella Public Storage & ALTA Housing project in compliance with the California Environmental Quality Act ( CEQA), the CEQA Guidelines ( California Code of Regulations § 15000 et. seq.) and the regulations and policies of the City of Mountain View.

The project proposes to demolish the existing improvements on -site and construct two storage facility buildings totaling 408, 964 square feet, and a Subdivision Permit to donate approximately 0. 5- acre of land to ALTA Housing for construction of a multi -family housing development with a total of 108 dwelling units. This Initial Study evaluates the environmental impacts that might reasonably be anticipated to result from implementation ofthe proposed proj ect.

1. 2 PUBLIC REVIEW PERIOD
Publication of this Initial Study marks the beginning of a 30- day public review and comment period.

During this period, the Initial Study will be available to local, state, and federal agencies and to interested organizations and individuals for review. Written comments concerning the environmental review contained in this Initial Study during the 30- day public review period should be sent to:

Edgar Maravilla
City of Mountain View
500 Castro Street, Mountain View, CA 94041
Email: Edgar.Maravilla(cr,mountainview.gov
Phone Number: ( 650) 903- 6321

1. 3 CONSIDERATION OF THE INITIAL STUDY AND PROJECT
Following the conclusion of the public review period, the City of Mountain View will consider the adoption of the Initial Study/ Mitigated Negative Declaration ( MND) for the project at a regularly scheduled meeting. The City shall consider the Initial Study/ MND together with any comments received during the public review process. Upon adoption of the MND, the City may proceed with project approval actions.

1. 4 NOTICE OF DETERMINATION
Ifthe proj ect is approved, the City ofMountain View will file a Notice ofDetermination ( NOD), which will be available for public inspection and posted within 24 hours of receipt at the County Clerk' s Office for 30 days. The filing ofthe NOD starts a 30- day statute of limitations on court challenges to the approval under CEQA ( CEQA Guidelines Section 15075( g)).

Terra Bella Public Storage & ALTA Housing Project 1
Initial Study
City of Mountain View November 2022
Resolution No. 18773

SECTION 2. 0 PROJECT INFORMATION

2. 1 PROJECT TITLE
Terra Bella Public Storage & ALTA Housing Project

2. 2 LEAD AGENCY CONTACT
Edgar Maravilla
City of Mountain View
500 Castro Street, Mountain View, CA 94041
Email: Edsiar.Maravillaamountainview. siov
Phone Number: ( 650) 903- 6321

2. 3 PROJECT APPLICANTS
Bryan Miranda
Public Storage
701 Western Avenue, Glendale, CA 91201
Email: bmirandapublicstorage. com
Phone Number: ( 818) 244- 8080
Carlos Castellanos
Alta Housing
3460 West Bayshore Road, Suite 104, Palo Alto, CA 94303 Email: Castellanos c(
e,altahousing. org
Phone Number: ( 650) 321- 9709

2. 4 PROJECT LOCATION
The approximately 4. 8- acre project site is located at 1020 and 1040 Terra Bella Avenue and 1055 San Leandro Avenue in the City of Mountain View (Assessor' s Parcel Numbers [ APNs] 153- 15- 030, 153- 15- 002, and 153- 15- 021). The project site is bound by US 101 to the north, Terra Bella Avenue to the south, San Rafael Avenue to the east, and Linda Vista Avenue to the west. The project site is owned by two entities: Alta Housing and Public Storage. Alta Housing owns the approximately 0. 5- acre southeastern portion of the site consisting of a dilapidated, uninhabitable, single -story residence and a paved area used for parking ( APN 153- 15- 021). Public Storage owns the remaining 4. 3- acre majority ofthe site ( APNs 153- 15- 002 and 153- 15- 030), which is developed with 18, single -story buildings that include drive -up storage lockers and a rental office totaling 77, 418 square feet.

The development to the west, south, and east of the project site consists primarily of office and industrial uses. There is also a scientology church to the west of the project site.

Regional and vicinity maps ofthe site are shown below on Figure 2. 4- 1 and Figure 2.4- 2, respectively, and an aerial photograph ofthe prcj ect site and the surrounding land uses is shown on Figure 2. 4- 3.

Terra Bella Public Storage & ALTA Housing Project 2
Initial Study
City of Mountain View November 2022
y
W
ii
Woodside
San Francisco
San Francisco Bay
Fremont
Menlo Park
Goject Site
Sunnyvale
San Jose
Pacific Ocean
organ
1-
1 Santa Cruz
Monterey Bay

REGIONAL MAP
Menlo Park
Stanford
East Palo Alto
Palo Alto
San
Francisco
Bay
Mountain View ®
a
Los Altos
Sunnyvale
F
0 . 5 1 2 3 4 5 Miles
FIGURE 2. 4- 1
70 rD
O
C
O
7 Z
O
F00V
W
y
Alta Housing Owned Property
Public Storage Owned Property
N
Base Map: Google Maps Ac
0 150 800 1, 200 1, b00 FeeL
Mareps Crre%

VICINITY MAP
dest
Maa
e e' a
Sao Oaa
Rah
on
a
La Avenida Street
Stevens Way
0 7 Avenue
L
Terra Bella Avenue
a
LA
o
fD 101
a
N
a
p
m D
3 mo
San Pablo Drive n
m
e
4 San`
4c
1e0
Sao Carlos Avenue O``
e
z
asq`
e
a
n40
y F n
F
U
C
FIGURE 2. 4- 2
y
Residential Development
N
Storage Facility Development
APN Boundary ® APN Site
0 50 300 400 700 Feet
Aerial SourceGoogle Earth Pro, May 27, 2022. Photo Date. Sep. 2020 k f s
r!
01 ww 101
A ...

S
Church
Church -
4 0' 4 Office
F^
9 .

AD
APN
153- 15- 030 I
O •.` 1055
San Leandro Avenue APN
153 15 002 m ' `.
1040 & 1050 Terra Bella Avenue APN
153- 15- 021 o ; * % „
3 1020 Terra Bella Avenue W
Office Future Industrial ,
w , Residential/ 1
O wo m
R<. Office O D ",y m
X g < Industrial CL
L.._.._..

J_.. J Terra
Bella Avenue -- Irt, ,
San e
1i 41. PT d
Future Office ` % Offices
Office at i _,
Industrial Industrial ,- 17
Office
q. N, Aa , - .
gW D
y
AERIAL
MAP m
m
m
ti
FIGURE

2.4- 3 70
rD
0 C
0 z
0 00
W
Resolution No. 18773

2. 5 ASSESSOR' S PARCEL NUMBERS
153- 15- 030, 153- 15- 002, and 153- 15- 021

2. 6 GENERAL PLAN DESIGNATION AND ZONING DISTRICT
The Mountain View 2030 General Plan ( General Plan) land use designation for the project site is General Industrial, which allows for industrial uses including manufacturing and storage, research and development, administrative offices, and ancillary commercial. Development in this land use designation is allowed a maximum floor -area ratio ( FAR) of 0. 35. If the development has a limited number of employees and customers, such as a warehouse, then a maximum FAR of 0. 55 would be permissible. Residential uses are not permitted in this land use designation.

The project site is zoned General Industrial ( MM), which allows land uses such as manufacturing, storage facilities, and warehouses by right. Other uses such as churches, restaurants, offices, and safe parking are conditionally permitted. The MM zone does not specify a maximum allowable building height unless the site is within 200 feet of a residential district, which the project site is not. Section

36. 20. 35 ofthe Mountain View Code of Ordinances ( City Code) contains other development standards for the MM zoning district including allowable FAR, setback requirements, and landscaping requirements. Residential land uses are not permitted in the MM zoning district.

2. 7 PROJECT - RELATED APPROVALS, AGREEMENTS, AND PERMITS General Plan Map and Text Amendment
Zoning Map Amendment
Development Review Permit
Subdivision Permit
California State Density Bonus Law
Development Agreement
Building Permits
Terra Bella Public Storage & ALTA Housing Project 6
Initial Study
City of Mountain View November 2022
Resolution No. 18773

SECTION 3. 0 PROJECT DESCRIPTION
The project includes a property transfer between the project site owners, Alta Housing and Public Storage, and a land donation of 0. 5- acre from Public Storage to Alta Housing to develop an updated storage facility and affordable, multi -family housing development. The proposed boundaries resulting from the property transfer for the two uses are shown in Figure 2. 4- 3. This property transfer would help foster a multi -family project with a pedestrian friendly environment within the Terra Bella neighborhood. The storage facility development by Public Storage would be located behind the affordable housing development by Alta Housing and adjacent to the freeway, with the storage facility development creating a buffer between the freeway and the future residents. These benefits cannot be achieved through the current property configuration, only through this unique collaborative venture proposed by Alta Housing and Public Storage. The project would ultimately require the demolition of all existing structures on -site.

As discussed previously, residential uses are not allowed under the current General Industrial General Plan designation or the MM zoning designation on the site. Therefore, the project would require a General Plan map amendment to accommodate the proposed residential building. The General Plan land use designation for the portion of project site with the proposed residential development would be changed to High Density Residential. The High Density Residential General Plan designation allows for development densities of 36 to 80 dwelling units per acre ( du/ ac) and encourages multi -family residential buildings. The General Plan text would also be amended to increase the maximum allowable FAR under the General Industrial land use designation from up to 0. 55 to 2. 5 on the storage facility portion ofthe project site that would remain under the existing General Industrial land use designation.

Moving forward, the 2. 5 maximum FAR would only apply to projects that provide significant public benefits in support of affordable housing, where allowed through zoning.

In addition to the General Plan amendment, the entire project site would be rezoned to Planned Community ( P) District with site -specific development standards to allow for the proposed storage facility and residential development.

The primary project components are described below. Conceptual site plans are shown in Figure 3. 0- 1 and Figure 3. 0- 2, and conceptual building elevations are shown in Figure 3. 0- 3 and Figure 3. 0- 4.

Terra Bella Public Storage & ALTA Housing Project 7
Initial Study
City of Mountain View November 2022
Resolution No. 18773
Paee 19 of 414
3nN3AV 13VHdVN NVS
F " t
0 ri
w
C
x
I
I
oLL
a i—
m}
i
oam
J
LU LU
fA a' o ' m
a N
I
wal
N 15 a -
IhI
W
1n a u y
Ji /
LER J
z
Q
w
Cn
z_
C]
J
m
J
Q
z
w
Q
N
w
N
0 N
O
N O
J
9 w
N
Q z
a
O
@ L. J
Em
L1J
z
O
U
0 Terra Bella Public Storage & ALTA Housing Project g
City of Mountain View
Initial Study
November 2022
y
raw 1falAARBRrI xcaoT+ wn Yk
if111/ ME1G-'kk OfTNLE A. 11.

Ia1Yfxl xtrOlT. fl9'.

WmrNfar p/ lM G1NOMdE9tsYR0
r
c tmvavn,+ rv.
uo.. rrrsgr
sior+ r-rewa mcra- rwrwleso
1A P9bE Ers[ uEf11'
ip
ffH lfA uf6nlE Ex% iM» EEE
R'' ILAGIaET Wli
4R EH[ aMEKiGKfw!
swmcavaun wuavo r, m
nx[ e>Pnrer, F. aa
uuattxoar
wbxenual. beiuw 7,gy
104" _ ro inrx, wcicwaunrw
R
LEGEND
c— FIRE TRUCK ROUTE

TRASH & RECYCLING TRUCK ROUTE

ACCESSIBLE ROUTE

FIRE APPARATUS MANEUVERING SPACE

F SITE DISTANCE TRIANGLE

PEDESTRIAN CIRCULATION

17. a

SETBACK
REUD

FORVIM L
aE.

E£
eCeroeis 1"' BUILDING 7 USTORY: T
25F bEiwml0sM. EvEeru.
r.
a

FOOTPRINT

SF J LANDSCAPE
323'
z•
c
rd.
waala rrt raw
tue+.x. rmm. Ea 25T
MAX TRAVEL 1w MAX TRAVEL y,
E T'
s
KM6TMET trGitt. FtiP e
I
ED
weo
e"
r`
w+ 9e0r • '
95, a
7 a31
BUILDING 293• r '
STORY. 123. MSr r
FOOTPRINT: 30, M SF I
lawrnau.
ae FRErsr biro
a ETB, 4CIf IIYCudiS
Yaa. 229•
T= 2W MAX TRAVEL 0
Lw 1LeE
91r, r@KE 9E£
AE* LU rtiµy I
r
I
h'' L' r M1% al % ti M1% 11 = M1%
5 !
rl Rxx bEArAy
A'
K
el 9a13 Yam' aS, RQFb >. sWt r
xx
W a

0. N.

L 0.

KN0.%sI4-R%> 74 QCAM
LL
1+
III
PARKING Oi RFOE IEVELS 1 AND 2) 3f
6- STORY RESIDENTIAL BUILDING PRO:

PARMAR- A. 14., SQ; W ii•
tzi; AGRGsy 3
I z
s..
0 20' 40' 80' 200' N
rC Source:

Ware Malcomb, September 30, 2022. TERRA BELLA AVERVE CONCEPTUAL STORAGE FACILITY BUILDINGS SITE PLAN FIGURE 3.0- 2 c c
Resolution No. 18773

PENTHOUSE
IIIkWlllo tl1111p1111111111i111111111111111111111111111111111111111 1 1 11 11 I 11 1 11 1 1 1 11 11 1 1 11 11 1 1 rl II II r Illmllllllillllllr 1i,'..! 1 1 i
1 I II 11 1 11 1 11 1 1 1 II 11 1 I 11 II I 1 11 II 1allll! L II 11 j Yl ' Ili 1 1 11 11 r 11 1 II I 1 1 11 II 1 r II 11 1 I II Ir 1 illllllll Wi
1 II I II I 11 I 111 Ir I 111 li I I II Il I 1 rl 11 In 3LD POOR 16 OF,
NORTH•

PENT OYSE
IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIVIIIIIIIIIIIIIIIIIIIIlll1Ola° ilw1 I P1Fn011' tlOIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII 1 Ili iiiiiiiii, iiii 11 I 1 1 1 1 I, I 1 1 11"` 1 1 1 c11 iilf Illllliiil; i i i i: illll 111111111 I , I I I 1 I II 1 1 I i
11 iIIIIIIIIII11111i gIG,! Illllllii, i_i_i_11 I- I1_-1 i i illll! IIIIIIIII II
II II rl 11 I 1 1 1 I 1 1 1 1 ii 1 1 1 11 u illllllllli„ Ills Ilf; lllllllii i i All i i i iilllllilllllll i11

IIIIII III II I I I I
1 I lil l I 1 • II_ l I I I.

IIIIIII
II IIIIII: IIIIII
III
Ir i11
li 1
II 1 1 111 11 II 1 I 1 1 if 1111 1 I I 1 II III 11 1 1 I 1 rl 11 II IIIIIIIIIIIIII 11 i11 1 s
1 1 1 i i 1 iirimii; IIIIIIII R., I, r:
11 I 1 II 11 1 1 I I II II 1 1 1 1 jiiice ii iiii Iiiil n.. v 7 .. ailIh
SOUTH •

PENTHOUSE, PENTHOUSE,
1 Ilr..
1 1 I
i i
1 1 1
Il i I 1 1 1
I '
I' i i
I 1 1 11 I
iT
11 1
i
1 I i
4111 O
1 I
FL
1 1 140 I
I
1,
I I1 II
iii I1 I I -
1 WEST • N EAST ELEVATION

CONCEPTUALIENTIAL BUILDING ELEVATIONS
Resolution No. 18773

BUILDING 1
BUILDING 2
SET
EAST ELEVATION '°' ,
P F` uRa
TQ_P_QF PARAPET
84' 7'
NORTH ELEVATION Aoo oREE " 11 use
TQP_ QF3PAM ET
TQPQ_F_PARAPET
57' 5"
4TH_FLQQR_ 39' 9"
i_R_DR ORp
FLQ, 18 -" Q5R.

TFLQ' 3 QRr 11
WEST ELEVATION "'.,
5; Fl TIP IF1RR1
Source: Ware M. k-, September 28, 2022.

CONCEPTUAL STORAGE FACILITY BUILDINGS ELEVATIONS FIGURE 3. 0- 4 Resolution No. 18773

3. 1 RESIDENTIAL DEVELOPMENT
The residential development would be developed in one phase and includes the demolition of the existing improvements on the southern portion ofthe site fronting Terra Bella Avenue. This area would be redeveloped with a six -story ( up to 70 feet to the top of roof and 80 feet to top of penthouse) residential apartment building with 108, 100 percent affordable units ( excluding manager' s units) and an above grade parking garage. The building would provide 28, three -bedroom apartment units, 29, two -bedroom apartment units, 49, one -bedroom apartment units, and two studio apartment units. Two of the 108 units would be reserved as manager' s units, one for the residential building manager and one to serve as a replacement for the existing storage facility manager' s unit that would be demolished as a part of this project. In the event affordable housing funding sources would not allow a unit to be occupied by the storage facility on -site manager, Building 1 of the storage facility development would include an 845 square foot manager' s apartment unit.' The residential parking garage would be located on the San Rafael Avenue and Terra Bella Avenue frontage, providing two levels of parking with a total of 105 parking stalls for the apartment units.

The ground -floor level of the building would include the first level ofthe parking garage, a bike shop and storage room, a management office, and a lobby and mail room area. Five residential units would also be located on the ground floor ofthe building facing Terra Bella Avenue. The second floor of the building would have an above grade parking garage and residential units. A residential courtyard would be provided on the third floor of the building containing landscaping areas, lounge areas, play equipment, and multiple trellises with lights and space heaters. Residential units, as well as a community room with meeting areas and kitchen space, would surround the courtyard and make up the remainder ofthe third floor. The remaining upper floors ofthe building would consist of residential units. Each floor would provide storage space for residents, and the third and fourth floor would provide laundry rooms for residents. The apartment building would have a minimum side setback of five feet from San Rafael Avenue and a front setback of 18. 5 feet from Terra Bella Avenue. The proj ect would include a pedestrian plaza area along Terra Bella Avenue that would contain seating areas and multiple garden themes.

The portion of the project site allotted for the residential building is approximately 45, 180 square feet or 1. 04 acres), which would result in an allowed development density of 84 du/ ac. The residential building would provide 100 percent affordable housing units, excluding the two manager' s units.

Under the State Density Bonus Law, the project is entitled to an 80 percent density bonus, four incentives, and unlimited waivers. The residential building requires a density bonus of 28 percent to achieve the proposed density of 104 du/ ac with 108 total units. The project proposes a Transportation Demand Management ( TDM) plan to reduce the amount of residential parking on -site from 137 parking spaces required by the City under the State Density Bonus Law to 105 spaces. A parking study was completed for the project ( refer to Appendix K for the parking analysis) and confirmed the proposed parking is adequate.

This Initial Study conservatively analyzes the project would include 109 residential units.

Terra Bella Public Storage & ALTA Housing Project 12 Initial Study City of Mountain View November 2022
Resolution No. 18773

3. 1. 1 Green Building Measures
The proposed residential building would achieve GreenPoint Rated Gold certification level by incorporating green building measures including landscaped bioretention areas, drought tolerant landscaping with high -efficiency irrigation, water efficient interior fixtures, energy efficient appliances, and solar panels on the rooftop. Pursuant to the City' s Green Building Code, the residential building would be 100 percent electric. No natural gas would be used.

3. 1. 2 Access and Parking
Vehicle access to the parking garage of the proposed residential building would be provided via two separate two- way driveways. A driveway on Terra Bella would lead to the at grade parking behind i.e., directly south of) the building. The second driveway would be located on San Rafael Avenue leading to the second -floor level parking garage.

As mentioned above, the parking garage would provide 105 total parking spaces and include a combination of traditional surface parking spaces and mechanical parking stalls that allow for the stacking of parked cars. These mechanical lift parking stalls would provide up to two parking spaces per stall by stacking two cars vertically. The ground floor level ofthe parking garage would utilize six of the " puzzle stacker" arrangements to provide 25 parking spaces. The other 80 stalls would be provided as standard surface parking stalls, five of which would be Americans with Disabilities Act ADA) accessible. The garage would provide 16 electric vehicle charging stations and 89 ( EV-ready) stalls that would be pre -wired to be converted into electric vehicle charging stations in the future.

The project also includes a total of 108 bicycle parking spaces in a secure storage room on the ground floor of the residential building. The secure storage room would be accessible through doorways on the outside of the building along Terra Bella Avenue or from internal access points. The project would also provide 12 short-term bicycle parking spaces on racks outside of the building adjacent to Terra Bella Avenue.

Pedestrian access to the residential building would be provided via sidewalks on Terra Bella Avenue and San Rafael, which would provide access to the lobby located on the southeast corner of the building.

3. 1. 3 Utility and Right -of -Way Improvements
The proposed residential building would make lateral connections to the existing utility system. The project would construct new domestic water, fire water, storm drain, and sanitary sewer lateral connections to the existing water, storm drain, and sanitary sewer mains in Terra Bella Avenue and new irrigation water and stormwater lateral connections to the existing water and storm drain mains in San Rafael Avenue. New fire water connections would be constructed for fire hydrants on Terra Bella Avenue and San Rafael Avenue. Electric lines would connect to an existing electrical vault on San Rafael Avenue northeast of the proposed building, and overhead electricity lines along the project frontage on Terra Bella Avenue would remain in place. No connections to natural gas are proposed.

The sidewalks along the project frontages on Terra Bella Avenue and San Rafael would be reconstructed and widened to include planter strips. New streetlights would also be installed along the building frontages on Terra Bella Avenue. Crosswalks would be striped at all four sides of the Terra Bella Public Storage & ALTA Housing Project 13 Initial Study City of Mountain View November 2022
Resolution No. 18773

intersection of Terra Bella Avenue and San Rafael Avenue, and curb ramps and gutters would be reconstructed at the intersection as necessary.

3. 2 STORAGE FACILITY DEVELOPMENT
The storage facility development would ultimately demolish all existing improvements within its area and develop two storage facility buildings on the northwest and northeast corners ofthe site (Buildings 1 and 2 respectively) totaling 408, 964 square feet. As mentioned previously, Phase 1 of construction includes demolition of the improvements on the southern portion of the site fronting Terra Bella Avenue. Phase 1 also includes the demolition of approximately 52, 610 square feet of the existing storage buildings located on the western side of the site. Additionally, Phase 1 would include construction of the six -story, approximately 285, 012 square foot storage facility building with a maximum height of 84'- 7" to the top of parapet ( see Building 1 on Figure 3. 0- 2). Building 1 would provide a new rental office on the ground floor and all six floors would contain lockers that customers would use for storage. As described above, ifit is infeasible to reserve one of the proposed apartment units for the on -site storage facility manager, Building 1 would include an 845 square foot manager' s apartment unit. If the apartment in Building 1 is not needed, this area would be constructed as self - storage unit space.

The remaining 24, 808 square feet of existing storage buildings would continue to operate as is until Phase 2. Once Phase 1 is complete, Phase 2 of construction would include the demolition of the remaining storage buildings and the construction of a four- story, approximately 123, 952 square foot storage facility building with a maximum height of 63'- 3" to the top of parapet. Building 2 would be located in the northeast corner of the site, directly behind the proposed residential building ( see Building 2 on Figure 3. 0- 2). Building 2 would be dedicated solely to storage space for customers.

The FAR for the storage facility portion ofthe project site would be approximately 2. 49. As described above, the maximum FAR allowed for this type of use in the General Industrial land use designation is 0. 55, but the proposed General Plan Text Amendment would allow for a 2. 5 FAR A locked, trash and recycling enclosure would be located adjacent to Building 1 to accommodate solid waste for both buildings. The trash and recycling bins would only be available to the storage facility office staff. Customers would be required to remove their own debris from the facility.

The proposed rental office hours would be 9: 00 a.m. to 8: 00 p. m. and customer access hours would be from 6: 00 a. m. to 9: 00 p. m., seven days a week. Once Phase 1 and 2 are completed, one to four employees per shift would staff the facility.

3. 2. 1 Green Building Measures
The proposed storage facility buildings would have solar panels and solar -ready rooftops. Landscaping around the perimeter ofthe storage buildings would also be drought tolerant and feature high -efficiency irrigation. The interior of the storage facility buildings would limit the use of artificial heating and cooling and would utilize motion activated lighting to limitthe energy use on -site. The buildings would z The storage facility buildings would total 408, 964 square feet, and the storage facility portion of the project site would be approximately 3. 77 acres ( or 164, 396 square feet) in size. 408, 964 square feet / 164, 396 square feet = 2. 49 Terra Bella Public Storage & ALTA Housing Project 14 Initial Study City of Mountain View November 2022
Resolution No. 18773

only be heated if interior temperatures reach approximately 55 degrees Fahrenheit and cooled only when interior temperatures reach approximately 85 degrees Fahrenheit.

3. 2. 2 Access and Parking
Vehicle access to the proposed storage buildings would be provided by two new, two- way driveways located on Linda Vista Avenue and San Rafael Avenue. The driveways would lead to the main internal driveway along the north side ofthe property and a separate branch ofthe driveway would run between the two buildings. The internal driveways would also provide emergency access.

Pursuant to the City' s parking requirements detailed in Section 36. 32. 50 of the Zoning Ordinance, 209 parking stalls would be required to serve both storage facility buildings. The proj ect requests a parking requirement reduction to reduce the amount of parking provided from 209 to 66 spaces. The parking study completed for the prof ect confirmed 66 spaces was adequate for the proposed Planned ( P) District refer to Appendix K for details). Most of the stalls would be located along the northern boundary of the project site, adjacent to Highway 101. Additional parking stalls, including three ADA accessible stalls, would be provided next to the rental office in the western building and adjacent to the customer lobbies at both buildings. The project would also provide short- term bicycle parking spaces on racks outside of the rental office.

Pedestrian access to the storage facility buildings would be provided via sidewalks on Linda Vista Avenue and San Rafael Avenue.

3. 2. 3 Utility and Right -of -Way Improvements
The proposed storage facility buildings would require lateral connections to the existing utility system.

The project would construct new lateral connections to the existing storm drain, water, and sanitary sewer mains in Linda Vista Avenue and San Rafael Avenue, and new fire water lateral connection to the existing water main in the northern property line. A new fire water connection would be made for a fire hydrant on San Rafael Avenue. Electric lines and transformers would be installed on -site to connect to the existing electric main in Linda Vista Avenue. No connections are proposed for natural gas.

The sidewalks along the project frontages on Linda Vista Avenue and San Rafael would be reconstructed and widened to include planter strips. New streetlights would also be installed on Linda Vista Avenue and San Rafael Avenue along the buildings' frontages.

3. 3 LANDSCAPING
The project site ( 1020 & 1040 Terra Bella) currently contains three on -site trees, and 15 street trees in the public right-of-way. One ofthe on -site trees is a protected Heritage tree under Section 32. 25 of the City Code.' The proposed project would remove a total of two on -site trees and preserve the only on - site protected Heritage tree. The proposed project would remove and replace all 15 public right-of-way s Per City Code Section 32.25, a " Heritage Tree" is any tree that has a trunk with a circumference of 48 inches or more measured at 54 inches above natural grade. Multi -trunk trees are measured just below the first major trunk fork. Three species, quercus ( oak), sequoia (redwood) or cedms ( cedar) are considered " Heritage" ifthey have a circumference of 12 inches measured at 54 inches above natural grade.

Terra Bella Public Storage & ALTA Housing Project 15 Initial Study City of Mountain View November 2022
Resolution No. 18773

street trees to conduct public right of way improvements, including detach sidewalks with street trees and landscape on all project frontages. The project would plant 19 replacement trees for a total project tree count of 125 trees in areas surrounding each ofthe buildings and in the surface parking lot for the storage facility buildings.

In addition to the replacement trees, the project would plant other new landscaping ( including new shrubs and groundcover) around the perimeter of the site boundary and building footprints and in the third -story courtyard ofthe residential building. The landscaping would include low to moderate water use plants and California native species.

3. 4 STORMWATER TREATMENT
The project site currently consists of approximately 4. 54 acres ( or 95 percent) of impervious area, including the rooftops ofthe existing buildings and surface parking areas. The remaining 0. 26 acre ( or five percent) of the site consists of pervious area, which is comprised of landscaping and other permeable surfaces. The proposed project would result in a reduction of impervious area by approximately 0. 65 acre ( or 14 percent). Table 3. 4- 1 summarizes the impervious and pervious surfaces on -site under existing and project conditions.

Table 3. 4- 1: Existing and Proposed Impervious/ Pervious Surfaces Existing Proposed
Acreage Percent of site Acreage Percent of site
Impervious 4. 54 95 3. 89 81
Pervious 0. 26 5 0. 91 19
Total 4. 80 100 4.80 100
The proposed improvements that would contribute to the decrease in impervious area include the addition of bioretention areas, landscaping, and rain gardens in several areas around the new buildings.

These improvements would be constructed on portions ofthe proj ect site that are currently paved areas.

3. 5 CONSTRUCTION
Project construction activities include demolition, site preparation, grading and excavation, building construction, architectural coatings, and paving. The project would be completed in two phases, the residential building and Building 1 ofthe storage facility would be constructed in Phase 1 and Building 2 of the storage facility would be constructed in Phase 2. These phases are described below.

3. 5. 1 Phase 1— Residential Development and Storage Building 1 Phase 1 of construction includes the demolition ofthe existing storage buildings on the southern portion of the site fronting Terra Bella Avenue, as well as approximately 52, 610 square feet of the storage buildings located on the western portion of the site. Since the existing rental office would be demolished under Phase 1, a temporary office trailer would be located within the storage facility development area near the San Rafael Avenue entrance while Building 1 is being constructed. The temporary office trailer would be removed as soon as Building 1 is approved for occupancy.

Terra Bella Public Storage & ALTA Housing Project 16 Initial Study City of Mountain View November 2022
Resolution No. 18773

The remaining storage buildings on the east side ofthe site would remain and continue to be occupied by existing tenants during Phase 1. During construction of Phase 1, the remaining storage buildings would be accessible from San Rafael Avenue.

After demolition is complete, the residential development and Building 1 of the storage facility development would be constructed. The construction materials required for this phase would be staged on -site in the area created by the demolition of the existing storage buildings. It is estimated that construction for both buildings would take a total of 22 months and require excavation at a maximum depth of eight feet below ground surface. Excavation and removal of approximately 2, 815 cubic yards of soil would be necessary to accommodate the proposed building foundations, footings, and utilities.

It is assumed that Phase 1 would start in December 2023 and be completed in September 2025.

After Phase 1 is complete, the storage facility development ( remaining storage facility buildings on the east side of the site and newly constructed Building 1) would be accessed from Linda Vista Avenue where the new rental office is located.

3. 5. 2 Phase 2 — Storage Building 2
Phase 2 of construction includes the demolition of the remaining 24, 808 square feet of the existing storage facility buildings and construction of Building 2 on the east side ofthe site. It is estimated that Phase 2 would take a total of 12 months to complete and require excavation at a maximum depth of eight feet below ground surface for utilities and 2. 5 feet at the building foundations. Excavation and removal of approximately 2, 625 cubic yards of soil would be necessary to accommodate the proposed building foundations, footings, and utilities. Itis assumed that Phase 2 would start in October 2025 and be completed in September 2026.

Terra Bella Public Storage & ALTA Housing Project 17 Initial Study City of Mountain View November 2022
Resolution No. 18773

SECTION 4. 0 ENVIRONMENTAL SETTING, CHECKLIST, AND

IMPACT DISCUSSION
This section presents the discussion of impacts related to the following environmental subjects in their respective subsections:

4. 1 Aesthetics

4. 2 Agriculture and Forestry Resources

4. 3 Air Quality

4. 4 Biological Resources

4. 5 Cultural Resources

4. 6 Energy

4. 7 Geology and Soils

4. 8 Greenhouse Gas Emissions

4. 9 Hazards and Hazardous Materials

4. 10 Hydrology and Water Quality

4. 11 Land Use and Planning

4. 12 Mineral Resources

4. 13 Noise

4. 14 Population and Housing

4. 15 Public Services

4. 16 Recreation

4. 17 Transportation

4. 18 Tribal Cultural Resources

4. 19 Utilities and Service Systems

4. 20 Wildfire

4. 21 Mandatory Findings of Significance
The discussion for each environmental subject includes the following subsections:

Environmental Setting — This subsection 1) provides a brief overview of relevant plans, policies, and regulations that compose the regulatory framework for the project and 2) describes the existing, physical environmental conditions at the project site and in the surrounding area, as relevant.

Impact Discussion — This subsection 1) includes the recommended checklist questions from Appendix G of the CEQA Guidelines to assess impacts and 2) discusses the project' s impact on the environmental subject as related to the checklist questions. For significant impacts, feasible mitigation measures are identified. " Mitigation measures" are measures that will minimize, avoid, or eliminate a significant impact ( CEQA Guidelines Section 15370). Each impact is numbered to correspond to the checklist question being answered. For example, Impact 13I0- 1 answers the first checklist question in the Biological Resources section.

Mitigation measures are also numbered to correspond to the impact they address. For example, MM 13I0- 1. 3 refers to the third mitigation measure for the first impact in the Biological Resources section. Identified mitigation measures are applicable to both project components residential and storage facility) unless explicitly stated otherwise.

Note: As described in the project description, in the event affordable housing funding sources would not allow a unit to be occupied by the storage facility on -site manager, Building 1 ofthe storage facility development would include an 845 square foot manager' s apartment unit. The following sections conservatively analyzed the development of 109 residential units to account for the additional unit in the storage facility.

Terra Bella Public Storage & ALTA Housing Project 18 Initial Study City of Mountain View November 2022
Resolution No. 18773

4. 1 AESTHETICS

4. 1. 1 Environmental Setting

4. 1. 1. 1 Regulatory Framework
State
Senate Bill 743
Senate Bill (SB) 743 was adopted in 2013 and requires lead agencies to use alternatives to level of service ( LOS) for evaluating transportation impacts, specifically vehicle miles traveled ( VW). SB 743 also included changes to CEQA that apply to transit -oriented developments, as related to aesthetics and parking impacts. Under SB 743, a project' s aesthetic impacts will no longer be considered significant impacts on the environment if
The project is a residential, mixed -use residential, or employment center project, and The project is located on an infill site within a transit priority area. 4 SB 743 also clarifies that local governments retain their ability to regulate a project' s aesthetics impacts outside ofthe CEQA process.

Streets and Highway Code Sections 260 through 263
The California Scenic Highway Program ( Streets and Highway Code, Sections 260 through 263) is managed by the California Department of Transportation ( Caltrans). The program is intended to protect and enhance the natural scenic beauty of California highways and adjacent corridors through special conservation treatment.

Local
Mountain View 2030 General Plan
The General Plan contains goals and policies to avoid significant aesthetic impacts. The following policies are applicable to the proposed proj ect.
4 An "infill site" is defined as " a lot located within an urban area that has been previously developed, or on a vacant site where at least 75 percent of the perimeter of the site adjoins, or is separated only by an improved public right-ofway from, parcels that are developed with qualified urban uses." A " transit priority area" is defined as " an area within 0. 5 mile of a major transit stop that is existing or planned, if the planned stop is scheduled to be completed within the planning horizon included in a Transportation Improvement Program or applicable regional transportation plan." A " major transit stop" means " a site containing an existing rail transit station, a ferry terminal served by either a bus or rail transit service, or the intersection of two or more major bus routes with a frequency of service interval of 15 minutes or less during the morning and afternoon peak commute periods." Source: Office of Planning and Research. " CEQA Review of Housing Projects Technical Advisory." Accessed March 1, 2022. hltps:// opr. ca. gov/ docs/ 20190208- TechAdvisoa- Review of Housing Exemptions. pdf.

Terra Bella Public Storage & ALTA Housing Project 19 Initial Study City of Mountain View November 2022
Resolution No. 18773

Policy Description
Land Use Mix, Distribution and Intensity
LUD 6. 1 Neighborhood character. Ensure that new development in or near residential neighborhoods is compatible with neighborhood character.

LUD 9. 1 Height and setback transitions. Ensure that new development includes sensitive height and setback transitions to adjacent structures and surrounding neighborhoods.

LUD 9. 3 Enhanced public space. Ensure that development enhances public spaces:

Encourage strong pedestrian - oriented design with visible, accessible entrances and pathways from the street.

Encourage pedestrian - scaled design elements such as stoops, canopies and porches.

Encourages connections to pedestrian and bicycle facilities.

Locate buildings near the edge of the sidewalk.

Encourage design compatibility with surrounding uses.

Locate parking lots to the rear or side of buildings.

Encourage articulation and use of special materials to provide visual interest.

Promote and regulate high -quality sign materials, colors and design that are compatible with site and building design.

Encourage attractive water -efficient landscaping on the ground level.

LUD 9. 5 View preservation. Preserve significant views throughout the community.

LUD 9. 6 Light and glare. Minimize light and glare from new development.

Citv of Mountain View Code of Ordinances
The City of Mountain View Zoning Ordinance ( Chapter 36 ofthe City Code) sets forth specific design guidelines, height limits, building density, building design and landscaping standards, architectural features, sign regulations, and open space and setback requirements.

The Zoning Ordinance promotes careful planning of development projects to enhance the visual environment. The City' s development review process includes the review of preliminary plans, the consideration of public input at and by the Development Review Committee ( DRC), Zoning Administrator, Environmental Planning Commission ( EPC), and the City Council. The City' s Planning Division reviews private development applications for conformance with City plans, ordinances, and policies related to zoning, urban design, subdivision, and CEQA.

The Zoning Administrator makes recommendations to the City Council for development projects located in some Precise Plan areas and makes final decisions for development, variance, and use permits. The DRC reviews the architecture and site design of new development and provides project applicants with design comments/ direction. The development review process ensures the architecture and urban design of new developments would protect the City' s visual environment.

Terra Bella Public Storage & ALTA Housing Project 20 Initial Study City of Mountain View November 2022
Resolution No. 18773

4. 1. 1. 2 Existing Conditions
Scenic Vistas
The term scenic vista typically refers to an expansive view of an area that is visually or aesthetically pleasing, usually as seen from an elevated point or open area. The scenic quality of the City is characterized by extensive views to the Santa Cruz Mountains to the south and west and views of other natural features such as the Diablo Mountain range to the southeast, Mission Peak to the east, and Stevens Creek in the eastern portion of the City. 5 Views of San Francisco Bay are generally available only from Shoreline Park in the North Bayshore Area, and views of ridgelines are available along the City' s edges, streets, and other open areas, which are unimpeded by built structures.' The project site is located in a highly developed area of the City. It is located on relatively flat land which limits the amount of expansive views from the project site. Obstructed views of the Santa Cruz Mountains can be seen in the project vicinity, looking south on Linda Vista Avenue and San Rafael Avenue.

There are no state -designated scenic highways in Mountain View. There is only one state - designated scenic highway in Santa Clara County: SR 9 from the Santa Cruz County line to the Los Gatos City limit. Eligible state scenic highways ( not officially designated) include: SR 17 from the Santa Cruz County line to SR 9, SR 35 from Santa Cruz County line to SR 9, I-280 from the San Mateo County line to SR 17, and the entire length of SR 152 within the County. The nearest officially designated scenic highway is the segment of I-280 in San Mateo County, which is approximately 6. 5 miles west of the project site.' The project site is not visible from a designated state scenic highway.

Visual Character and Quality
The project site is located in an office and industrial part of the City. The project site contains three separate uses and operations: a gated storage facility, a boarded -up single-family residence, and a gated parking area that serves as a safe parking lot.' In total, the project site contains 19 existing buildings:
17 buildings with storage lockers, one rental office, and one non -habitable residence. The 17 drive -up storage locker buildings are single -story structures with flat top roofs, concrete masonry unit ( CMU) walls, and large rolling garage doors for each locker unit. The rental office at the storage facility is a taller one- story structure with a combination offlat rooflines and a pyramid hip roof. The storage locker building and rental office total 77,418 square feet. The residence is a dilapidated, uninhabitable onestory and has a fagade covered in wooden cladding and a standard hip roof. The safe parking lot is located between the storage facility buildings and single residence. The landscaping on the project site is currently comprised of small shrubs, three on -site trees, one of which is a protected Heritage tree 5 City of Mountain View. Draft 2030 General Plan and Greenhouse Gas Reduction Program Final Environmental Impact Report. SCH # 2011012069. September 2012. Page 477. 6 City of Mountain View. Draft 2030 General Plan and Greenhouse Gas Reduction Program Final Environmental Impact Report. SCH # 2011012069. September 2012. Page 477. 7 Caltrans. " California State Scenic Highway System Map." Accessed June 27, 2022. hlWs: Hcaltmns. maps. arc gis. com/ apps/ web Upyiewer/ index. html? id=465 dfd3 d807c46cc8e 8057116f 1 aacaa. s " Safe parking" is a City program that gives a temporary, overnight, safe location to park for individuals and families living in a vehicle while providing access to services that will transition them into more stable housing.

Source: City of Mountain View. " Safe Parking Program." Accessed September 9, 2022. hlWs:// www. mountainview. gov/ depts/ comdev/ housing/ homelessness/ safe parking program/ default. asp.

Terra Bella Public Storage & ALTA Housing Project 21 Initial Study City of Mountain View November 2022
Resolution No. 18773

under Section 32.25 ofthe City Code.9 Additional information regarding the trees on -site can be found in Section 4. 4 Biological Resources.

The surrounding area in the immediate vicinity of the project site consists primarily of one- to twostory office and industrial properties. The properties to the west of the project site contain a two- story church and several single -story office buildings. These properties have landscaped areas surrounding the perimeter of the sites. The properties to the south and east of the project site are occupied by one to two- story office buildings with landscaping around the perimeter of the sites and in the surface parking lots. Highway 101 is adjacent to the northern site boundary, and the retaining walls and elevated highways are visible from the project site.

Views ofthe project site and the surrounding area are shown in Photos 1- 6 below.

Location within a Transit Priority Area
The project site is not located within 0. 5- mile of a major transit stop; therefore, it is not located in a Transit Priority Area.
9 Per City Code Section 32.25, a " Heritage Tree" is any tree that has a trunk with a circumference of 48 inches or more measured at 54 inches above natural grade. Multi -trunk trees are measured just below the first major trunk fork. Three species, quercus ( oak), sequoia (redwood) or cedms ( cedar) are considered " Heritage" ifthey have a circumference of 12 inches measured at 54 inches above natural grade.

Terra Bella Public Storage & ALTA Housing Project 22 Initial Study City of Mountain View November 2022
Resolution No. 18773
34 of 414
Photo 1: View of the existing uninhabitable single- family residence on the southeast corner of the project site.

Photo 2: View of the " safe parking lot" currently located on eastern side of the project site.

PHOTOS 1 & 2
Terra Bella Public Storage & ALTA Housing Project 23 Initial Study City of Mountain View November 2022
Resolution No. 18773

Photo 3: View from the northwest corner of the Terra Bella Avenue and San Rafael Avenue intersection looking south.

Photo 4: View from the northeast corner of the Terra Bella Avenue and Linda Vista Avenue intersection looking west.

PHOTOS 3 & 4
Terra Bella Public Storage & ALTA Housing Project 24 Initial Study City of Mountain View November 2022
Resolution No. 18773
36 of 414
Photo 5: View from the northeast corner of the project site looking west.

Photo 6: View from the southern border of the project site looking north.

PHOTOS 5 & 6
Terra Bella Public Storage & ALTA Housing Project 25 Initial Study City of Mountain View November 2022
Resolution No. 18773

4. 1. 2 Impact Discussion
Potentially
Significant
Impact
Less than
Significant
with Mitigation
Incorporated
Less than
Significant
Impact
No Impact
Except as provided in Public Resources Code
Section 21099, would the project:
1) Have a substantial adverse effect on a scenic
vista?
2) Substantially damage scenic resources,
including, but not limited to, trees, rock
outcroppings, and historic buildings within a
state scenic highway?
3) In non -urbanized areas, substantially degrade ®
the existing visual character or quality of
public views of the site and its surroundings?
10 If the project is in an urbanized area, would
the project conflict with applicable zoning and
other regulations governing scenic quality?
4) Create a new source of substantial light or ®
glare which would adversely affect day or
nighttime views in the area?
Impact AES- 1: The project would not have a substantial adverse effect on a scenic vista. ( Less than Significant Impact
As discussed in Section 4. 1. 1. 2, the topography and location of the project area limits the view of scenic resources. The project does not propose development in Shoreline Park, City' s edges, streets, or other open areas. The primary scenic resource visible from the project vicinity is the Santa Cruz Mountain Range. Views of the Santa Cruz Mountains are obstructed by existing development throughout most of the project site. Based on the lack of scenic vistas visible from the site, implementation of the project would result in a less than significant impact to scenic vistas. ( Less than Significant Impact)
Impact AES- 2: The project would not substantially damage scenic resources, including, but not limited to, trees, rock outcroppings, and historic buildings within a state scenic highway. ( No Impact)
As discussed in Section 4. 1. 1. 2, there are no state -designated scenic highways in Mountain View and the nearest designated scenic highway is approximately 6. 5 miles west of the project site. The project site is not visible from that segment of state -designated scenic highway, so the development of the project would not have an adverse impact on the viewshed from the highway. ( No Impact) 10 Public views are those that are experienced from publicly accessible vantage points.

Terra Bella Public Storage & ALTA Housing Project 26 Initial Study City of Mountain View November 2022
Resolution No. 18773

Impact AES- 3• The project is in an urbanized area and would not conflict with applicable zoning and other regulations governing scenic quality. ( Less than Significant Impact)
The project would be subject to review by the DRC review process to ensure consistency with the General Plan policies and other regulations identified in Section 4. 1. 1. 1. The project therefore would be designed to be compatible with the neighborhood character, minimize light and glare, have height and setback transitions as appropriate from adjacent structures, enhance public spaces by constructing landscaped seating areas along Terra Bella Avenue, and create a presence on Terra Bella Avenue by facing the residential courtyard towards the street. Based on the above discussion, the proposed project would not conflict with applicable zoning and other regulations governing scenic quality. ( Less than Significant Impact)
Impact AES- 4: The project would not create a new source of substantial light or glare which would adversely affect day or nighttime views in the area. ( Less than Significant Impact)
The project site is located in an urban infill area with existing light sources including lighting from buildings, streetlights, and vehicles travelling on local roads and US- 101. Sources of daytime glare include building windows and vehicles. The proposed project would construct a six -story residential building and two storage facility buildings that would range from four- to six -stories in height. All three buildings would include exterior, nighttime security lighting. The interior lighting of the residential units at night would also add to the neighborhood nighttime illumination. New streetlights would also be installed on Linda Vista Avenue, San Rafael Avenue, and Terra Bella Avenue.

The development of the project would replace existing light sources and add additional light sources that would incrementally increase the amount of nighttime lighting on the project site compared to existing condition. However, the project would be subject to the design review process prior to submittal of construction drawings for a building permit. The review would ensure project lighting is directed downward and would not spillover onto adjacent properties or otherwise be highly visible, while providing adequate lighting for safety. The proposed buildings do not contain reflective materials e. g., large expansive glass) that would introduce new sources of substantial glare. For these reasons, the project would not create a new source of substantial light or glare. ( Less than Significant Impact) Terra Bella Public Storage & ALTA Housing Project 27 Initial Study City of Mountain View November 2022
Resolution No. 18773

4. 2 AGRICULTURE AND FORESTRY RESOURCES

4. 2. 1 Environmental Setting

4. 2. 1. 1 Regulatory Framework
State
Farmland Mapping and Monitoring Program
The California Department of Conservation' s Farmland Mapping and Monitoring Program ( FMMP) assesses the location, quality, and quantity of agricultural land and conversion ofthese lands over time.

Agricultural land is rated according to soil quality and irrigation status. The best quality land is identified as Prime Farmland. In CEQA analyses, the FMMP classifications and published County maps are used, in part, to identify whether agricultural resources that could be affected are present on - site or in the project area.

California Land Conservation Act
The California Land Conservation Act ( Williamson Act) enables local governments to enter into contracts with private landowners to restrict parcels of land to agricultural or related open space uses.

In return, landowners receive lower property tax assessments. In CEQA analyses, identification of properties that are under a Williamson Act contract is used to also identify sites that may contain agricultural resources or are zoned for agricultural uses.

Fire and Resource Assessment Program
The California Department of Forestry and Fire Protection ( CAL FIRE) identifies forest land, timberland, and lands zoned for timberland production that can ( or do) support forestry resources." Programs such as CAL FIRE' S Fire and Resource Assessment Program and are used to identify whether forest land, timberland, or timberland production areas that could be affected are located on or adjacent to a proj ect site.

4. 2. 1. 2 Existing Conditions
The project site has a General Plan land use designation of General Industrial and is zoned MM General Industrial). The project site is currently developed with one, non -habitable single -story residence and 18, single -story buildings that include drive -up storage lockers and a rental office. The site is surrounded by office and industrial uses. The Santa Clara County Important Farmlands 2016 Map designates the project site as " Urban and Built -Up Land", which is defined as land with at least six structures per 10 acres. Common examples of " Urban and Built -Up Land' are residential, institutional, industrial, commercial, landfill, golf course, airports, and other utility uses. 12 No lands Forest Land is land that can support 10 percent native tree cover and allows for management of forest resources California Public Resources Code Section 12220( g)); Timberland is land not owned by the federal government or designated as experimental forest land that is available for, and capable of, growing trees to produce lumber and other products, including Christmas trees ( California Public Resources Code Section 4526); and Timberland Production is land used for growing and harvesting timber and compatible uses ( Government Code Section 51104( g)).

California Natural Resources Agency. " Santa Clara County Important Farmland 2016." Accessed June 27, 2022. hlWs:// www. conservation. ca. gov/ dlrp/ fmmp/ Pages/ SantaClara. aspx Terra Bella Public Storage & ALTA Housing Project 28 Initial Study City of Mountain View November 2022
Resolution No. 18773

adjacent to the project site are used for agricultural production, forest land, or timberland. Surrounding properties are designated, zoned, and used for urban uses. There are no Williamson Act parcels on or in the vicinity of the project site. 13

4. 2. 2 Impact Discussion
Would the project:
1) Convert Prime Farmland, Unique Farmland, or
Farmland of Statewide Importance
Farmland), as shown on the maps prepared
pursuant to the Farmland Mapping and
Monitoring Program of the California
Resources Agency, to non- agricultural use?
2) Conflict with existing zoning for agricultural
use, or a Williamson Act contract?
3) Conflict with existing zoning for, or cause
rezoning of, forest land ( as defined in Public
Resources Code Section 12220( g)), timberland
as defined by Public Resources Code Section
4526), or timberland zoned Timberland
Production ( as defined by Government Code
Section 51104( g))?
4) Result in a loss of forest land or conversion of
forest land to non -forest use?
5) Involve other changes in the existing
environment which, due to their location or
nature, could result in conversion of Farmland
to non- agricultural use or conversion of forest
land to non -forest use?
Less than
Potentially Significant
Less than
Significant Significant
with Mitigation
Impact
Incorporated
Impact
No Impact
El H
El Z
El Z
El Z
El Z
Impact AG-1• The project would not convert Prime Farmland, Unique Farmland, or Farmland of Statewide Importance, as shown on the maps prepared pursuant to the Farmland Mapping and Monitoring Program of the California Resources Agency, to non- agricultural use. ( No Impact)
The proposed project would redevelop a site that is designated as " Urban and Built -Up Land" on maps prepared by the California Resources Agency for Santa Clara County. Therefore, no Prime Farmland, Unique Farmland, or Farmland of Statewide Importance would be converted to non- agricultural use as a result of project implementation. ( No Impact)
11 County of Santa Clara. " Williamson Act and Open Space Easement." September 17, 2018. Accessed June 27, 2022. hltps:// www. sccgov. org/ sites/ dpd/ prograins/ Wa/ pages/ wa. aspx.

Terra Bella Public Storage & ALTA Housing Project 29 Initial Study City of Mountain View November 2022
Resolution No. 18773

Impact AG-2: The project would not conflict with existing zoning for agricultural use, or a Williamson Act contract. ( No Impact)
As discussed in Section 4. 2. 1. 2, the project site has a General Plan land use designation of General Industrial and is zoned NM ( General Industrial). The project site is not under a Williamson Act contract. Therefore, the project would not conflict with existing zoning for an agricultural use or a Williamson Act contract. (No Impact)
Impact AG- 3: The project would not conflict with existing zoning for, or cause rezoning of, forest land, timberland, or timberland zoned Timberland Production. ( No Impact)
As discussed in Section 4.2. 1. 2, the project site is not zoned, or adjacent to land zoned, for forest land, timberland, or Timberland Production. It is in an urban area surrounded by urban development.

Therefore, the project would not conflict with existing zoning or require rezoning of forest land or timberland uses. ( No Impact)
Impact AG-4: The project would not result in a loss offorest land or conversion offorest land to non -forest use. ( No Impact)
The project site is in an urbanized area of the City and is currently developed with a storage facility and an uninhabitable residence. Therefore, no forest land would be lost as a result ofthe project. ( No Impact)
Impact AG- 5: The prof ect would not involve other changes in the existing environment which, due to their location or nature, could result in conversion of Farmland, to nonagricultural use or conversion of forest land to non -forest use. ( No Impact) The proposed development would occur in an urbanized area of the City. No agricultural or forestry uses are on -site or in the vicinity of the project site. Therefore, the project would not result in impacts to agricultural lands or forest lands. ( No Impact)
Terra Bella Public Storage & ALTA Housing Project 30 Initial Study City of Mountain View November 2022
Resolution No. 18773

4. 3 AIR QUALITY
The following discussion is based, in part, on an Air Quality & Greenhouse Gas Assessment prepared by Illingworth & Rodkin, Inc. dated November 15, 2022. This report is attached as Appendix A to this Initial Study.

4. 3. 1 Environmental Setting

4. 3. 1. 1 Background Information
Criteria Pollutants
Air quality in the Bay Area is assessed related to six common air pollutants ( referred to as criteria pollutants), including ground -level ozone ( 03), nitrogen oxides ( NO,,), particulate matter (PM), carbon monoxide ( CO), sulfur oxides ( SO,,), and lead.14 Criteria pollutants are regulated because they result in health effects. The most commonly regulated criteria pollutants in the Bay Area are discussed further below. An overview of the sources and the associated health effects are summarized in Table 4. 3- 1.

Table 4. 3- 1: Health Effects of Air Pollutants
Pollutants Sources Primary Effects
Aggravation of respiratory and
Ozone ( 03) Atmospheric reaction of organic gases cardiovascular diseases with nitrogen oxides in sunlight Irritation of eyes
Cardiopulmonary function impairment
Nitrogen g
Motor vehicle exhaust, high
Aggravation of respiratory illness
Dioxide ( NO2) temperature stationary combustion
Reduced visibility
atmospheric reactions
Fine Reduced lung function, especially in
Particulate Stationary combustion of solid fuels, children Matter ( PM2. 5) construction activities, industrial Aggravation ofrespiratory and and Coarse processes, atmospheric chemical cardiorespiratory diseases Particulate reactions Increased cough and chest discomfort Matter (PM, o) Reduced visibility
Cars and trucks, especially diesel- Cancer
Toxic Air fueled; industrial sources, such as
Chronic eye, lung, or skin irritation Contaminants chrome platers; dry cleaners and service TACs) stations; building materials and
Neurological and reproductive
products
disorders
High 03 levels are caused by the cumulative emissions of reactive organic gases ( ROG) and NO, NO2 is one ofthe most prevalent nitrogen oxides that combines with nitric oxide (NO) to form NO,, (nitrogen oxides). These precursor pollutants react under certain meteorological conditions to form high 03 levels. Controlling the emissions ofthese precursor pollutants is the focus ofthe Bay Area' s attempts 14 The area has attained both state and federal ambient air quality standards for CO. The project does not include substantial new emissions of sulfur dioxide or lead. These criteria pollutants are not discussed further.

Terra Bella Public Storage & ALTA Housing Project 31 Initial Study City of Mountain View November 2022
Resolution No. 18773

to reduce 03 levels. The highest 03 levels in the Bay Area occur in the eastern and southern inland valleys that are downwind of air pollutant sources.

PM is a problematic air pollutant ofthe Bay Area. PM is assessed and measured in terms of respirable particulate matter or particles that have a diameter of 10 micrometers or less ( PMIo) and fine particulate matter where particles have a diameter of 2. 5 micrometers or less ( PM2. 5). Elevated concentrations of PMIo and PM2. 5 are the result of both region -wide emissions and localized emissions.

Toxic Air Contaminants
TACs are a broad class of compounds known to have health effects. They include but are not limited to criteria pollutants. TACs are found in ambient air, especially in urban areas, and are caused by industry, agriculture, diesel 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).

Diesel exhaust is the predominant TAC in urban air and is estimated to represent about three- quarters ofthe cancer risk from TACs. Diesel exhaust is a complex mixture of gases, vapors, and fine particles.

Medium- and heavy- duty diesel trucks represent the bulk of DPM emissions from California highways.

The majority of DPM is small enough to be inhaled into the lungs. Most inhaled particles are subsequently exhaled, but some deposit on the lung surface or are deposited in the deepest regions of the lungs ( most susceptible to injury).15 Chemicals in diesel exhaust, such as benzene and formaldehyde, have been previously identified as TACs by the California Air Resources Board CARB).

Sensitive Receptors
Some groups of people are 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 schools with children under 16.

4. 3. 1. 2 Regulatory Framework
Federal and State
Clean Air Act
At the federal level, the United States Environmental Protection Agency ( EPA) is responsible for overseeing implementation of the Clean Air Act and its subsequent amendments. The federal Clean Air Act requires the EPA to set national ambient air quality standards for the six common criteria pollutants ( discussed previously), including PM, 03, CO, SO, NO, and lead. 15 California Air Resources Board. " Overview: Diesel Exhaust and Health." Accessed July 6, 2022. hops:// ww2. arb. ca. gov/ resources/ overview- diesel- exhaust- and- health.

Terra Bella Public Storage & ALTA Housing Project 32 Initial Study City of Mountain View November 2022
Resolution No. 18773

CARB is the state agency that regulates mobile sources throughout the state and oversees implementation of the state air quality laws and regulations, including the California Clean Air Act.

The EPA and the CARB have adopted ambient air quality standards establishing permissible levels of these pollutants to protect public health and the climate. Violations of ambient air quality standards are based on air pollutant monitoring data and are determined for each air pollutant. Attainment status for a pollutant means that a given air district meets the standard set by the EPA and/ or CARB.

Risk Reduction Plan
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. 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, the plan involves application of emission control strategies to existing diesel vehicles and equipment to reduce DPM (in additional to other pollutants). Implementation of this plan, in conjunction with stringent federal and CARB- adopted emission limits for diesel fueled vehicles and equipment ( including off -road equipment), will significantly reduce emissions of DPM and NOx.

California Green Building Standards Code
Section 5. 504. 4. 5 ofthe California Green Building Standards Code ( CALGreen) requires hardwood plywood, particleboard, and medium density fiberboard composite wood products used on the interior or exterior ofthe building to meet the requirements for formaldehyde as specified in CARB' s Air Toxics Control Measure ( ATCM) for composite wood ( 17 CCR 93120 et seq.), and materials that are not exempt by ATCM must meet specified emission limits required in CALGreen Table

5. 504. 4. 5 — Formaldehyde Limits.

Regional and Local
2017 Clean Air Plan
The Bay Area Air Quality Management District ( BAAQMD) is the agency primarily responsible for assuring that the federal and state ambient air quality standards are maintained in the San Francisco Bay Area. Regional air quality management districts, such as BAAQMD, must prepare air quality plans specifying how state and federal air quality standards will be met. BAAQMD' s most recently adopted plan is the Bay Area 2017 Clean Air Plan ( 2017 CAP). The 2017 CAP focuses on two related BAAQMD goals: protecting public health and protecting the climate. To protect public health, the 2017 CAP describes how BAAQMD will continue its progress toward attaining state and federal air quality standards and eliminating health risk disparities from exposure to air pollution among Bay Area communities. To protect the climate, the 2017 CAP includes control measures designed to reduce emissions of methane and other super -greenhouse gases ( GHGs) that are potent climate pollutants in the near -term, and to decrease emissions of carbon dioxide by reducing fossil fuel combustion. 16 6 Bay Area Air Quality Management District. Final 2017 Clean Air Plan. April 19, 2017. hlW:// www. baagmd. gov/ plans- and- climate/ air- guality_ plans/ current- plans.

Terra Bella Public Storage & ALTA Housing Project 33 Initial Study City of Mountain View November 2022
Resolution No. 18773

CEQA Air Quality Guidelines
The BAAQMD CEQA Air Quality Guidelines are intended to serve as a guide for those who prepare or evaluate air quality impact analyses for projects and plans in the San Francisco Bay Area.

Jurisdictions in the San Francisco Bay Area Air Basin utilize the thresholds and methodology for assessing air quality impacts developed by BAAQMD within their CEQA Air Quality Guidelines. The guidelines include information on legal requirements, BAAQMD rules, methods of analyzing impacts, and recommended mitigation measures.

City of Mountain View 2030 General Plan
The General Plan contains goals and policies to avoid significant air quality impacts. The following policies are applicable to the proposed proj ect.

Policy Description
INC 20. 6
Air quality standards. Protect the public and construction workers from construction exhaust and particulate emissions.

INC 20. 7 Protect sensitive receptors. Protect the public from substantial pollutant concentrations.

INC 20. 8 Offensive odors. Protect residents from offensive odors.

MOB 9. 2 Reduced vehicle miles traveled. Support development and transportation improvements that help reduce greenhouse gas emissions by reducing per capita VMT.

4. 3. 1. 3 Existing Conditions
The Bay Area is considered a non -attainment area for ground -level 03 and PM2.5 under both the federal Clean Air Act and state Clean Air Act. The area is also considered nonattainment for PMio under the state act, but not the federal act. The area has attained both state and federal ambient air quality standards for CO.

The air quality analysis conservatively assumed that the former residential building 60 feet east of the project site, currently occupied by a roofing company, is the closest sensitive receptor to the project site. The second closest sensitive receptor is located approximately 260 feet southeast of the project site ( refer to Figure 4. 3- 1).

Terra Bella Public Storage & ALTA Housing Project 34 Initial Study City of Mountain View November 2022
y
X r a ,
Source: Illingworth & Rodkin, Inc., September

LOCATIONS OF OFF - SITE SENSITIVE RECEPTORS
1 I
r:

Legend
M EI
Ll 4 Off -Site Receptors
Residential Area
Storage Phase 1 Area
a
Storage Phase 2 Area a
0 C
FIGURE 4. 3 1
Resolution No. 18773

4. 3. 2 Impact Discussion
Potentially
Less than
Less than
Significant
Significant
Significant No Impact
with Mitigation
Impact
Incorporated
Impact
Would the project:
1) Conflict with or obstruct implementation of
the applicable air quality plan?
2) Result in a cumulatively considerable net
increase of any criteria pollutant for which the
project region is non -attainment under an
applicable federal or state ambient air quality
standard?
3) Expose sensitive receptors to substantial
pollutant concentrations?
4) Result in other emissions ( such as those
leading to odors) adversely affecting a
substantial number of people?
Note: Where available, the significance criteria established by the applicable air quality management district or air pollution control district may be relied upon to make the determinations.

As discussed in CEQA Guidelines Section 15064( b), the determination of whether a project may have a significant effect on the environment calls for judgment on the part ofthe lead agency and must be based to the extent possible on scientific and factual data. The City of Mountain View has considered the air quality thresholds updated by BAAQMD in May 2017 and regards these thresholds to be based on the best information available for the San Francisco Bay Area Air Basin and conservative in terms ofthe assessment of health effects associated with TACs and PM2.5. The BAAQMD CEQA Air Quality thresholds used in this analysis are identified in Table 4. 3- 2 below.

Terra Bella Public Storage & ALTA Housing Project 36 Initial Study City of Mountain View November 2022
Resolution No. 18773

Table 4. 3- 2: BAAQMD Air Quality Significance Thresholds Pollutant
Construction
Thresholds
Operation Thresholds
Average Daily
Emissions
pounds/ day)
Average Daily
Emissions
pounds/ day)
Annual Average
Emissions ( tons/ year)
Criteria Air Pollutants
ROG, NOX 54 54 10
PM10 82 ( exhaust) 82 15
PM2.5 54 ( exhaust) 54 10
CO Not Applicable 9. 0 ppm ( eight -hour) or 20. 0 ppm ( one -hour) Fugitive Dust
Dust Control
Measures/ Best
Management Practices
Not Applicable
Health Risks and Hazards for New Sources ( within a 1, 000- foot Zone of Influence) Health Hazard Single Source Combined Cumulative Sources Excess Cancer Risk 10 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 ( average) Impact AIR-1: The project would not conflict with or obstruct implementation of the applicable air quality plan. ( Less than Significant Impact with Mitigation Incorporated)
The BAAQMD CEQA Air Quality Guidelines set forth criteria for determining consistency with the 2017 CAP. In general, a project is considered consistent if a) it supports the primary goals ofthe 2017 CAP; b) it includes relevant control measures; and c) it does not interfere with implementation of the 2017 CAP control measures.

Support of Primary 2017 Clean Air Plan Goals
As discussed in Section 4. 3. 1. 1 Regulatory Framework, the goals of the 2017 CAP include 1) protecting public health by progressing towards attaining air quality standards and eliminating health risk and 2) protecting the climate. If a project exceeds the BAAQMD criteria air pollutants thresholds of significance, its emissions are considered to result in significant adverse air quality impacts to the region' s existing air quality conditions. An analysis of the project' s construction and operational air pollutant emissions is provided below.

Terra Bella Public Storage & ALTA Housing Project 37 Initial Study City of Mountain View November 2022
Resolution No. 18773

Construction Period Emission
Implementation of the proposed project would result in short-term emissions from construction activities associated with development, including demolition, site grading, asphalt paving, building construction, and architectural coating. Emissions commonly associated with construction activities include fugitive dust from soil disturbance, fuel combustion from mobile heavy- duty diesel- and gasoline -powered equipment, portable auxiliary equipment, and worker commute trips. During construction, fugitive dust, the dominant source of PM10 and PM2.5 emissions, is generated when wheels or blades disturb surface materials. Uncontrolled dust from construction can become a nuisance and potential health hazard to those living and working nearby.

Demolition and construction of buildings can also generate PMio and PM2. 5 emissions. Off -road construction equipment is often diesel -powered and can be a substantial source of NO,, emissions, in addition to PM10 and PM2. 5 emissions. Diesel exhaust from construction equipment poses both a health and nuisance impact to nearby receptors.

Construction period emissions were modeled based on equipment list and schedule information provided by the applicant. Refer to Appendix A for details about the modeling, data inputs, and assumptions. The average daily construction criteria air pollutant emissions ofthe proposed prcj ect are summarized in Table 4. 3- 3 below. As shown in Table 4. 3- 3, the construction period emissions would be below the BAAQMD significance thresholds.

Table 4. 3- 3: Average Daily Construction Period Criteria Pollutant Emissions Emission Source
Emissions ( pounds/ day)*
NO. ROG PM10 PM2. 5
Residential Building (2024)* 3. 94 4. 61 0. 22 0. 17
Residential Building and Storage Building 1 ( 2025) 11. 87 4. 63 0. 24 0. 17 Storage Building 2 ( 2026) 4. 98 2. 49 0. 12 0. 09
Significance Threshold 54 54 82 54
Significant? No No No No
Includes one month of construction in 2023
BAAQMD considers construction emission impacts that are below the thresholds of significance ( such as those of the project) less than significant if Best Management Practices ( BMPs) are implemented.

The City requires the BMPs as a City standard condition of approval.

City Standard Condition of Approval
COA AIR-1. 1: Basic Air Quality Construction Measures: The applicant shall require all construction contractors to implement the basic construction mitigation measures recommended by the Bay Area Air Quality Management District (BAAQMD) to reduce fugitive dust emissions. Emission reduction measures shall include, at a minimum, the following measures: ( a) all exposed surfaces ( e. g., parking areas, Terra Bella Public Storage & ALTA Housing Project 38 Initial Study City of Mountain View November 2022
Resolution No. 18773

staging areas, soil piles, graded areas, and unpaved access roads) shall be watered two times per day; ( b) all haul trucks transporting soil, sand, or other loose material off -site shall be covered; ( c) 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; ( d) all vehicle speeds on unpaved roads will be limited to 15 mph; ( e) 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; ( f) idling times shall be minimized either by shutting equipment off when not in use or reducing the maximum idling time to five minutes ( as required by the California airborne toxics control measures Title 13, Section 2485, of the California Code of Regulations). Clear signage shall be provided for construction workers at all access points; ( g) 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; and ( h) post a publicly visible sign with the telephone number and person to contact at the City of Mountain View regarding dust complaints. This person shall respond and take corrective action within 48 hours. BAAQMD' s phone number shall also be visible to ensure compliance with applicable regulations.

With implementation ofthe City standard condition of approval COA AIR- 1. 1, the project construction period emission would be reduced to a less than significant level by controlling dust, limiting equipment idling, and properly maintaining equipment. ( Less than Significant Impact) Operational Period Emissions
Operational emissions from the project would be generated primarily from vehicles driven by future residents, employees, and customers. Vehicle trips from the project were calculated in the Transportation Analysis ( TA) completed for the project (refer to Appendix K). Evaporative emissions from architectural coatings and maintenance products ( classified as consumer products) are also typical emissions from the proposed land use. The operational emissions ofthe project were modeled, and the results are summarized in Table 4. 3- 4. Refer to Appendix A for details about the modeling, data inputs, and assumptions. As shown in Table 4.3- 4, the project' s operation emissions would be below the BAAQMD annual tons per year and average pounds per day significance thresholds. The project, therefore, would not result in significant operational criteria air pollutant emissions.

Terra Bella Public Storage & ALTA Housing Project 39 Initial Study City of Mountain View November 2022
Resolution No. 18773

Table 4. 3- 4: Operational Period Criteria Pollutant Emissions Emission Source
Annual Emissions (tons/year)
NOx ROG PMw PM2. 5
Tons Per Year
Annual Project Operational Emissions ( 2027) 2. 94 0. 43 0. 99 0. 25 Existing Use Emissions ( 2022) 0. 46 0. 09 0. 12 0. 03
Net Annual Emissions ( A- B) 2. 48 0. 34 0. 87 0. 22
Significance Threshold 10 10 15 10
Significant? No No No No
Pounds Per Day
Daily Project Operational Emissions ( 2027)* 13. 61 1. 89 4. 74 1. 21 Significance Threshold 54 54 82 54
Significant? No No No No
Assumes 365- day operation
Community Health Risk
Development ofthe proposed project can increase the health risk of existing sensitive receptors during construction and operation. Temporary project construction activity which generates dust and equipment exhaust would affect nearby sensitive receptors. Operation ofthe project would result in an increase in traffic, which would increase air pollutant and TAC emissions in the area. Community risk impacts were addressed by predicting increased cancer risk, the increase in annual PM2.5 concentrations and computing the Hazard Index ( HI) for non -cancer health risks. To evaluate the increased cancer risks from the project, a 30- year exposure period was used, per BAAQMD guidance, with the sensitive receptors being exposed to both project construction and operation emissions during this timeframe.

Unlike the increased maximum cancer risk, the annual PM2. 5 concentration and HI values are not additive but based on the annual maximum values for the entirety of the project.

The project' s community risk impacts to existing sensitive receptors for construction activities and operational activities, and cumulative community risk impacts combined with other existing sources of TACs in the project area are discussed below.

Construction Period Emissions
Construction equipment and associated heavy- duty truck traffic generates diesel exhaust, which is a TAC. Construction exhaust emissions may pose health risks for sensitive receptors near the project.

The primary community risk impact issue associated with construction emissions are cancer risk and exposure to PM2. 5.

Table 4. 3- 5 summarizes the maximum excess cancer risk, annual PM2. 5 concentration, and non -cancer HI based on the maximum DPM concentration affecting the maximally exposed individual ( MEI), which is the sensitive receptor affected the most by project construction emissions. The NMI for cancer Terra Bella Public Storage & ALTA Housing Project 40 Initial Study City of Mountain View November 2022
Resolution No. 18773

risk and PM2.5 during construction period is located on the first floor of a single-family residence southeast of the project site ( as shown on Figure 4. 3- 1). 17 As shown in Table 4. 3- 5, the construction risk impacts from the proposed project exceeds the BAAQMD single -source threshold for incremental cancer risk, while the single -source PM2.5 and HI thresholds are not exceeded.

Table 4. 3- 5: Project Health Risk Impacts to the Off -Site MEI Cancer Risk (per Annual PM2. 5
Emission Source
million)* mg/m3)*
Hazard Index
Project Construction
Unmitigated 11. 08 0. 15 0. 01
Mitigated* 3. 52 0. 06 0. 01
BAAQMD Single - Source Threshold 10. 0 0. 3 1. 0
Exceed Threshold? Unmitigated Yes No No
Mitigated* No No No
Construction equipment with Tier 4 interim engines and BMPs as mitigation measures.

Mitigation Measure:

MM AIR-1. 1: The project shall implement the below measures to control diesel particulate matter emissions during construction. This list of measures shall be incorporated into the approved building plan set.

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 NO,, and PM, 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 60 percent reduction in particulate matter exhaust in comparison to uncontrolled equipment; alternatively ( or in combination). Use of alternatively - fueled equipment with lower NOX emissions that meet the NOX and PM reduction requirements above.
b. Use of electrical or non -diesel fueled equipment.

Alternatively,

2. The applicant may develop another construction operations plan demonstrating that the construction equipment used on -site would achieve a reduction in construction diesel particulate matter emissions by 60 percent or greater.

The closest sensitive receptor, east of the project site, is not the project MEL The second closest sensitive receptor is the project MEL This is due to the concentrations and timing of the phased construction activities and the northnorthwest wind flow based on the Moffett Federal Airfield wind rose.

Terra Bella Public Storage & ALTA Housing Project 41 Initial Study City of Mountain View November 2022
Resolution No. 18773

Elements of the plan could include a combination of some of the following measures:

Implementation of No. 1 above to use Tier 4 or alternatively fueled equipment,
Installation of electric power lines during early construction phases to avoid use of diesel generators and compressors,
Use of electrically -powered equipment,
Forklifts and aerial lifts used for exterior and interior building construction shall be electric or propane/ natural gas powered, Change in construction build -out plans to lengthen phases, and Implementation of different building techniques that result in less diesel equipment usage.

Such a construction operations plan shall be prepared by an air quality expert and approved by the City prior to construction.

Modeling was completed to determine the effectiveness of the City standard condition of approval COA AIR- 1. 1 ( implementation ofBAAQMD BMPs) and mitigation measure MM AIR- 1. 1 ( restricting the project wide -fleet emissions) at reducing health risk impacts to the project MEI. The modeling results show that with the implementation of the City standard condition of approval COA AIR- 1. 1 and mitigation measure MM AIR- 1. 1, the project' s significant cancer risk construction impact would be reduced to a less than significant level ( see Table 4. 3- 4). Refer to Appendix A for additional details about the modeling. ( Less than Significant Impact with Mitigation Incorporated) Operational Period Emissions
The project does not propose stationary equipment that could emit substantial TACs, such as diesel emergency generators or fire pumps. The project would generate additional vehicle trips compared to existing conditions, resulting in increased TACs from diesel vehicles. However, BAAQMD considers a road with less than 10, 000 total vehicles per day a low -impact source of TACs. The project would generate 1, 117 daily trips or 996 net daily trips compared to existing conditions. The project traffic would be dispersed on the roadway system with most of the trips being from light -duty vehicles ( i.e., passenger automobiles), which is a fraction of 10, 000 daily vehicles.

In addition, projects with the potential to cause or contribute to increased cancer risk from traffic include those that have attract high numbers of diesel -powered on road trucks or use off -road diesel equipment on -site, such as a warehouse distribution center, a quarry, or a manufacturing facility, which could expose existing or future planned receptors to substantial cancer risk levels and/ or health hazards.

The proposed project is not a project of concern for non- BAAQMD permitted mobile sources.

Therefore, emissions from project traffic are considered negligible and less than significant.

In addition, the City requires the following standard condition of approval to address community health risks from interior finishes containing formaldehyde.

Terra Bella Public Storage & ALTA Housing Project 42 Initial Study City of Mountain View November 2022
Resolution No. 18773

City Standard Condition of Approval:

COA AIR-1. 2: Indoor Formaldehyde Reductions: If the project utilizes composite wood materials ( e. g., hardwood plywood, medium density fiberboard, particleboard) for interior finishes, then only composite wood materials that are made with CARB approved, no -added formaldehyde ( NAF) resins, or ultra -low emitting formaldehyde ( ULEF) resins shall be utilized ( CARB, Airborne Toxic Control Measure to Reduce Formaldehyde Emissions from Composite Wood Products, 17 CCR Section 93120, et seq., 2009- 2013).

For these reasons, the project operation would not result in a significant health risk effect to off -site receptors. ( Less than Significant Impact)
Cumulative Emissions
By its very nature, air pollution is largely a cumulative impact. The geographic area for cumulative impacts to sensitive receptors is within 1, 000 feet of the project site. This distance is recommended by BAAQMD because adverse effects are the greatest within this distance. At further distances, health risk diminishes. A review of the project area indicates existing sources of TACs within or approximately 1, 000 feet of the project site. These sources include three roadways with over 10, 000 vehicles per day (U.S. 101, State Route 85 ramps, and Shoreline Boulevard), and six stationary sources three diesel generators, a gas dispensing facility, and two generic sources). In addition, the construction emissions from the following development projects could contribute to the cumulative health risk:
1001 North Shoreline Boulevard ( 150 feet west) — two buildings totaling 303 dwelling units and six levels office space ( approved)
1155 & 1185 Terra Bella Avenue ( 400 feet southwest) — 20, 000- square foot office building proposed/ pending)
Community risk impacts from the cumulative sources to the project MEIs were modeled and the results are summarized in Table 4. 3- 6. 18 Refer to Appendix A for details about the modeling, data inputs, and assumptions. As shown in Table 4. 3- 6, the project would create a significant cumulative annual PM2.5 impact; however, implementation of City standard condition of approval COA AIR- 1. 1 and mitigation measure MM AIR- 1. 1 would reduce the cumulative impact to a less than significant level. The project would not exceed the BAAQMD cumulative thresholds for cancer risk and M. s The six stationary sources were modeled. The mitigated construction risk and hazard impact values for the 1001 North Shoreline Boulevard project were calculated in the air quality technical report prepared for this project' s EIR, which is available on the City' s web site
hlWs:// www.mountainview. gov/depts/ comdev/ planning/activeprojects/ 1001nshoreline. asp). The environmental review for 1155 & 1185 Terra Bella Avenue project ( also available on the City' s website) concluded its health risk would be less than significant. For this reason, the risk for this project was assumed to be below the BAAQNM single -source thresholds.

Terra Bella Public Storage & ALTA Housing Project 43 Initial Study City of Mountain View November 2022
Resolution No. 18773

Table 4. 3- 6: Cumulative Health Risk Impacts to the Off -Site MEI Cancer Risk ( per Annual PM2. s
Emission Source
million) mg/m3)
Hazard Index
Project Construction
Unmitigated 11. 08 0. 15 0. 01
Mitigated* 3. 52 0. 06 0. 01
U. S. 101, Average Daily Trips ( ADT) 11. 83 0. 54 0. 01 202, 801
S. R. 85, ADT 67, 600 2. 44 0. 15 0. 01
Shoreline Boulevard, ADT 29, 045 0. 14 0. 01 0. 01
Teledyne Microwave ( Facility ID# 1127,
Manufacturing), MEI at + 1, 000 feet
Sankt Andreas Backhaus ( Facility ID
42867, Oven), MEI at 330 feet

0. 01
Santa Clara Valley Transportation
Authority ( Facility ID 413038, Generator), 0. 24 0. 01 MEI at + 1, 000 feet
New Cingular Wireless PCS LLC dba
AT&T Mobility (Facility ID 422347, 0. 05
Generators), MEI at + 1, 000 feet
Santa Clara Valley Transportation
Authority (Facility ID 4111934, Gas 0. 01
Dispensing Facility), MEI at + 1, 000 feet
Microsoft Corporation ( Facility ID
4201699, Generator) MEI at 960 feet

1. 13 0. 01 0. 01
1001 North Shoreline Boulevard Mitigated
Construction Emissions at 150 feet

5. 40 0. 08 0. 01
1155 & 1185 Terra Bella Avenue Mitigated
Construction Emissions at 400 feet

10. 0 0. 30 1. 00
Combined Sources
Unmitigated 42. 33 1. 24 1. 07
Mitigated* 34. 77 1. 15 1. 07
BAAQMD Cumulative Source Threshold 100 0. 8 10. 0
Exceed Threshold?
Unmitigated No Yes No
Mitigated* No Yes No
Assumes implementation of City standard condition of approval COA AIR- 1. 1 and mitigation measure MM AIR- 1. 1.

Terra Bella Public Storage & ALTA Housing Project 44 Initial Study City of Mountain View November 2022
Resolution No. 18773

As discussed above under project construction impacts, the project would not result in significant health risks to nearby sensitive receptors with the implementation of City standard condition of approval COA AIR- 1. 1 and mitigation measure NM AIR- 1. 1. As shown in Table 4. 3- 6, with implementation of City standard condition of approval COA AIR- 1. 1 and mitigation measure NM AIR- 1. 1, the cumulatively significant annual PM2. 5 impact of the project would still exceed the cumulative threshold due to the contribution of non -project sources. City standard condition of approval COA AIR- 1. 1 and mitigation measure MM AIR- 1. 1 represent the best available measures to reduce project construction period emissions. The PM2.5 concentration from existing sources and potential simultaneous nearby developments exceed the cumulative threshold even without the proj ect due to local roadways and the simultaneous construction of the other cumulative developments ( i.e., the approved 1001 North Shoreline Boulevard project and the proposed/ pending 1155 & 1185 Terra Bella Avenue project) at the project MEI. The project' s mitigated PM2.5 concentration represents five percent of the total mitigated cumulative concentration. In addition, according to BAAQMD, health risks would be less than significant to the MEI if the risks from the project are reduced below the single -source thresholds. For these reasons, the project' s contribution is not cumulatively considerable.

Less than Significant Cumulative Impact with Mitigation Incorporated) Health Effects from Criteria Air Pollutants
In a 2018 decision ( Sierra Club v. County of Fresno), the state Supreme Court determined CEQA requires that when a project' s criteria air pollutant emissions would exceed applicable thresholds and contribute a cumulatively considerable contribution to a significant cumulative regional criteria pollutant impact, the potential for the project' s emissions to affect human health in the air basin must be disclosed. State and federal ambient air quality standards are health -based standards, and exceedances of those standards result in continued unhealthy levels of air pollutants. As stated in the 2017 BAAQMD CEQA Air Quality Guidelines, air pollution by its nature is largely a cumulative impact. No single proj ect is sufficient in size, by itself, to result in nonattainment of ambient air quality standards. Instead, a project' s individual emissions contribute to existing cumulatively significant adverse air quality impacts. In developing thresholds of significance for air pollutants, BAAQMD considered the emission levels for which a project' s individual emissions would be cumulatively considerable. If a project has a less than significant impact for criteria pollutants, it is assumed to have no adverse health effect. As discussed above, the project' s construction and operation emissions would be below the BAAQMD criteria air pollutant emissions thresholds with the implementation of City standard conditions of approval. For these reasons, the project' s criteria air pollutant emissions would not result in a significant health impact. ( Less than Significant Impact) Consistency with 2017 Clean Air Plan Control Measures
Because the project would not exceed the BAAQMD impact thresholds for criteria air pollutant emissions, the project is not required to incorporate project -specific control measures listed in the 2017 CAP. Furthermore, implementation of the project would not inhibit BAAQMD or partner agencies from continuing progress toward attaining state and federal air quality standards and eliminating health -risk disparities from exposure to air pollution among Bay Area communities, as described within the 2017 CAP. Based on the above discussion, the project would not conflict with 2017 CAP.

Less than Significant Impact)
Terra Bella Public Storage & ALTA Housing Project 45 Initial Study City of Mountain View November 2022
Resolution No. 18773

Impact AIR- 2: The project would not result in a cumulatively considerable net increase of any criteria pollutant for which the project region is non -attainment under an applicable federal or state ambient air quality standard. ( Less than Significant Impact)
As discussed previously in above, the Bay Area is considered a non -attainment area for ground -level 03 and PM2. 5 under both the federal and state Clean Air Act. The area is also considered a nonattainment area for PMio under the state act, but not the federal act. The Bay Area has attained both state and federal ambient air quality standards for CO. As part of an effort to attain and maintain ambient air quality standards for 03 and PMio, BAAQMD has established thresholds of significance for these air pollutants and their precursors, as listed in Table 4. 3- 2. These thresholds are for 03 precursor pollutants ( ROG and NOx), PMio, and PM2. 5, and apply to both construction period and operational period impacts.

As discussed under Impact AIR- 1, the construction period and operational period criteria air pollutant emissions would not exceed the BAAQMD thresholds of significance, and the project would implement BAAQMD- recommended construction BMWs to controlling dust, limiting equipment idling, and properly maintaining equipment. For these reasons, the project would not result in a significant cumulative criteria pollutant impact. ( Less than Significant Impact) Impact AIR-3: The project would not expose
concentrations. ( Less than
Incorporated)
sensitive receptors to substantial pollutant
Significant Impact with Mitigation
As discussed under Impact AQ- 1 above, project would result in exposure of sensitive receptors near the project site to TAC emissions in excess of BAAQMD risk thresholds for excess cancer cases and annual PM2. 5 concentrations from construction emissions. Implementation of City standard condition of approval COA AIR- 1. 1 and mitigation measures NM AIR- 1. 1 identified under Impact AIR- 1 would reduce the construction health risk to a less than significant level. As discussed under Impact AIR- 1, the project does not propose uses that would result in significant operational health risk impacts and would implement City standard condition of approval COA AIR- 1. 2 to reduce any emissions from indoor formaldehyde to a less than significant level. ( Less than Significant Impact with Mitigation Incorporated)
Impact AIR-4: The project would not result in other emissions ( such as those leading to odors) adversely affecting a substantial number of people. ( Less than Significant Impact)
According to BAAQMD' s CEQA Guidelines, an odor source with five or more confirmed complaints per year averaged over three years is considered to have a significant impact. Future construction activities in the project area could result in odorous emissions from diesel exhaust associated with construction equipment. Because of the temporary nature of these emissions and highly diffusive properties of diesel exhaust, odorous exposure of sensitive receptors to these emissions would be limited and the impact is considered less than significant.

BAAQMD has identified a variety ofland uses and types of operations that would produce emissions that may lead to odors. Land uses identified include wastewater treatment plants, sanitary landfills, Terra Bella Public Storage & ALTA Housing Project 46 Initial Study City of Mountain View November 2022
Resolution No. 18773

food processing facilities, coffee roasters, composting facilities, and confined animal facility/feed lot/dairy facility. The project proposes residential and storage facility uses, which do not fall under any ofthe land uses identified by BAAQMD to cause objectionable odors. Therefore, the impact would be less than significant. ( Less than Significant Impact)

4. 3. 3 Non- CEQA Effects
Per California Building Industry Association v. Bay Area Air Quality Management District, 62 Cal. 4th 369 ( BIA v. BAAQMD), effects of the environment on the project are not considered CEQA impacts. The following discussion is included for informational purposes only because the City of Mountain View has General Plan Policy INC 20. 7 that address existing air quality conditions affecting a proposed project.

In addition to evaluating health impacts from project construction and cumulative TAC sources on existing sensitive receptors ( as discussed in Section 4. 3. 2 Impact Discussion), a health risk assessment was completed to analyze the health effects of project construction ( Phase 2 storage building) and existing TAC sources ( same off -site sources identified above) on future residents of the proposed project. The criteria used by the City of Mountain View for determining whether new receptors would be affected are the same as those listed for Single -Source Health Risk and Combined Cumulative Health Risk in Table 4. 3- 2, above. The community health risk to future residences including the on - site managers residing in the manager' s units was evaluated and the results are summarized in Table

4. 3- 7 and Table 4. 3- 8, respectively. Refer to Appendix A for details about the modeling, data inputs, and assumptions.

Health Risk Effects to Future Residences in the Residential Building As shown in Table 4. 3- 7, the health risk to the residents from Phase 2 construction and U. S. 101 would exceed the BAAQMD single -source threshold for cancer risk, from U. S. 101 and SR 85 would exceed the BAAQMD single -source threshold for annual PM2.5, and from cumulative sources would exceed the BAAQMD cumulative - source threshold for annual PM2. 5.

Table 4. 3- 7: Cumulative Health Risk Effects to Future Residences in the Residential Building
Cancer Risk (per Annual PM2. s
Emission Source
million) mg/ m3)
Hazard Index
Project Construction
Unmitigated 21. 84 0. 27 0. 02
Mitigated* 4. 67 0. 09 0. 01
U. S. 101, Average Daily Trips ( ADT)
208, 651
Without MERV 16 22. 46 1. 14 0. 01
With MERV 16 7. 59 0. 23 0. 01
S. R. 85, ADT 69, 550
Without MERV 16 4. 78 0.34 0. 01
Terra Bella Public Storage & ALTA Housing Project 47 Initial Study City of Mountain View November 2022
Resolution No. 18773

Table 4. 3- 7: Cumulative Health Risk Effects to Future Residences in the Residential Building
Cancer Risk ( per Annual PM2. s
Emission Source
million) mg/m3)
Hazard Index
With MERV 16 1. 91 0. 07 0. 01
Shoreline Boulevard, ADT 29, 899
Without MERV 16 0. 22 0. 02 0. 01
With MERV 16 0. 11 0. 01 0. 01
Teledyne Microwave ( Facility ID# 1127,
Manufacturing), MEI at + 1, 000 feet
Sankt Andreas Backhaus ( Facility ID
42867, Oven), MEI at 330 feet

0. 01
Santa Clara Valley Transportation
Authority ( Facility ID 413038, Generator), 0. 49 0. 01 MEI at + 1, 000 feet
New Cingular Wireless PCS LLC dba
AT& T Mobility ( Facility ID 422347, 0. 05
Generators), MEI at + 1, 000 feet
Santa Clara Valley Transportation
Authority ( Facility ID 4111934, Gas 0. 01
Dispensing Facility), MEI at + 1, 000 feet
Microsoft Corporation (Facility ID
4201699, Generator) MEI at 960 feet

2. 55 0. 01 0. 01
BAAQMD Single Source Threshold 10 0. 3 1. 0
Exceed Threshold?
Unmitigated Yes Yes No
Mitigated* No No No
Combined Sources
Unmitigated and Without MERV 16 52. 41 1. 78 0. 07
Mitigated and With MERV 16* 17. 39 0. 41 0. 06
BAAQMD Cumulative Source Threshold 100 0. 8 10. 0
Exceed Threshold?
Unmitigated WithoutMERV16 No Yes No
Mitigated and WithMERV16* No No No
Assumes implementation of City standard condition of approval COA AIR- 1. 1 and mitigation measure MM AIR- 1. 1.

Terra Bella Public Storage & ALTA Housing Project 48 Initial Study City of Mountain View November 2022
Resolution No. 18773

Condition of Approval
COA AIR-5. 1: The project shall implement the measures:

Install air filtration for the Residential Building and manager' s unit iflocated in Storage Building 1. Air filtration devices shall be rated MERV16 or higher.

To ensure adequate health protection to sensitive receptors ( i.e., residents), this ventilation system, whether mechanical or passive, shall filter all fresh air that would be circulated into the dwelling units.

The ventilation system shall be designed to keep the building at positive pressure when doors and windows are closed to reduce the intrusion of unfiltered outside air into the building
As part of implementing this measure, an ongoing maintenance plan for the buildings' heating, ventilation, and air conditioning ( HVAC) air filtration system shall be required that includes regular filter replacement.

Ensure that the use agreement and other property documents: ( 1) require cleaning, maintenance, and monitoring of the affected buildings for air flow leaks, ( 2) include assurance that new owners or tenants are provided information on the ventilation system, and ( 3) include provisions that fees associated with owning or leasing a unit( s) in the building include funds for cleaning, maintenance, monitoring, and replacements of the filters, as needed.

With implementation of the above condition of approval, the ventilation system for the residential units would achieve an 80- percent reduction for small particles and reduce the cancer risk ( from U.S. 101) and maximum annual PM2. 5 concentrations ( from U.S. 101 and SR 85) below the BAAQMD single - source cancer risk and annual PM2. 5 concentrations and cumulative - source annual PM2. 5 concentrations thresholds. With implementation of City standard condition of approval COA AIR- 1. 1 and mitigation measure MM AIR- 1. 1, the construction cancer risk and annual PM2.5 concentrations would be reduced below the BAAQMD single -source thresholds.

Health Risk Effects to Future Storage Facility Manager in Storage Building 1 As shown in Table 4. 3- 8, the health risk of the storage facility manager in Storage Building 1 from U.S. 101 would exceed the BAAQMD single -source threshold for cancer risk, from U.S. 101 and S. R. 85 would exceed the BAAQMD single -source threshold for annual PM2.5, and from cumulative sources would exceed the BAAQMD cumulative -source threshold for annual PM2.5.

Table 4. 3- 8: Cumulative Health Risk Effects to Future Manager in Storage Building 1
Emission Source Cancer Risk ( per Annual PM2. 5Hazard Index million) mg/m3)
Project Construction
Terra Bella Public Storage & ALTA Housing Project 49 Initial Study City of Mountain View November 2022
Resolution No. 18773

Table 4. 3- 8: Cumulative Health Risk Effects to Future Manager in Storage Building 1
Cancer Risk ( per Annual PM2. s
Emission Source
million) mg/m3)
Hazard Index
Unmitigated 2.24 0. 11 0. 01
Mitigated* 0. 48 0. 05 0. 01
U. S. 101, Average Daily Trips ( ADT)
208, 651
Without MERV 16 28. 69 1. 50 0. 01
With MERV 16 9. 82 0. 30** 0. 01
S. R. 85, ADT 69, 550
Without MERV 16 5. 78 0.42 0. 01
With MERV 16 2. 35 0. 08 0. 01
Shoreline Boulevard, ADT 29, 899
Without MERV 16 0. 21 0. 02 0. 01
With MERV 16 0. 10 0. 01 0. 01
Teledyne Microwave ( Facility ID# 1127,
Manufacturing), MEI at + 1, 000 feet
Sankt Andreas Backhaus ( Facility ID 0. 01
42867, Oven), MEI at 330 feet
Santa Clara Valley Transportation
Authority ( Facility ID 413038, Generator), 0. 49 0. 01 MEI at + 1, 000 feet
New Cingular Wireless PCS LLC dba
AT& T Mobility ( Facility ID 422347, 0. 05
Generators), MEI at + 1, 000 feet
Santa Clara Valley Transportation
Authority ( Facility ID 4111934, Gas 0. 01
Dispensing Facility), MEI at + 1, 000 feet
Microsoft Corporation ( Facility ID
4201699, Generator) MEI at 960 feet

2. 55 0. 01 0. 01
BAAQMD Single Source Threshold 10 0. 3 1. 0
Exceed Threshold?
Unmitigated Yes Yes No
Mitigated* No No No
Combined Sources
Unmitigated and Without MERV 16 40. 03 2. 06 0. 06
Mitigated and With MERV 16* 15. 86 0. 45 0. 06
BAAQMD Cumulative Source Threshold 100 0. 8 10. 0
Terra Bella Public Storage & ALTA Housing Project 50 Initial Study City of Mountain View November 2022
Resolution No. 18773

Table 4. 3- 8: Cumulative Health Risk Effects to Future Manager in Storage Building 1
Emission Source Cancer Risk ( per Annual PM2. 5Hazard Index million) mg/m3)
Exceed Threshold?
Unmitigated WithoutMERV16 No Yes No
Mitigated and WithMERVIO No No No
Assumes implementation of City standard condition of approval COA AIR- 1. 1 and mitigation measure MM AIR- 1. 1.

Mitigated/With MERV16 PM2.5 concentration from U. S. 101 is at, but not exceeding, the single -source threshold.

With implementation of the above City standard condition of approval, the ventilation system for the manager' s unit would achieve an 80- percent reduction for small particles and reduce the cancer risk from US 101) and maximum annual PM2. 5 concentrations ( from U. S. 101 and S. R 85) below the BAAQMD single - source cancer risk and annual PM2. 5 concentrations and cumulative - source annual PM2. 5 concentrations thresholds.

Terra Bella Public Storage & ALTA Housing Project 51 Initial Study City of Mountain View November 2022
Resolution No. 18773

4. 4 BIOLOGICAL RESOURCES
The discussion in this section is based in part on arborist reports prepared by HMH Engineers dated September 27, 2022 ( for 1040 Terra Bella) and March 7, 2022 ( for 1020 Terra Bella). These reports are attached to this Initial Study as Appendix B and Appendix C, respectively.

4. 4. 1 Environmental Setting

4. 4. 1. 1 Regulatory Framework
Federal and State
Endangered Species Act
Individual plant and animal species listed as rare, threatened, or endangered under state and federal Endangered Species Acts are considered special -status species. Federal and state endangered species legislation has provided the United States Fish and Wildlife Service ( USFWS) and the California Department of Fish and Wildlife ( CDFW) with a mechanism for conserving and protecting plant and animal species of limited distribution and/or low or declining populations. Permits may be required from both the USFWS and CDFW if activities associated with a proposed project would result in the take of a species listed as threatened or endangered. To " take" a listed species, as defined by the State of California, is " to hunt, pursue, catch, capture, or kill, or attempt to hunt, pursue, catch, capture, or kill" these species. Take is more broadly defined by the federal Endangered Species Act to include harm of a listed species.

In addition to species listed under state and federal Endangered Species Acts, Sections 153 80( b) and c) ofthe CEQA Guidelines provide that all potential rare or sensitive species, or habitats capable of supporting rare species, must be considered as part of the environmental review process. These may include plant species listed by the California Native Plant Society and CDFW- listed Species of Special Concern.

Migratory Bird Treaty Act
The federal Migratory Bird Treaty Act ( MBTA) prohibits killing, capture, possession, or trade of migratory birds except in accordance with regulations prescribed by the Secretary of the Interior.

Hunting and poaching are also prohibited. This includes direct and indirect acts, except for harassment and habitat modification, which are not included unless they result in direct loss of birds, nests, or eggs.

The CDFW also protects migratory and nesting birds under California Fish and Game Code Sections 3503, 3503. 5, and 3800. The CDFW defines taking as causing abandonment and/ or loss ofreproductive efforts through disturbance.

Sensitive Habitat Regulations
Wetland and riparian habitats are considered sensitive habitats under CEQA. They are also afforded protection under applicable federal, state, and local regulations, and are generally subject to regulation by the United States Army Corps of Engineers ( USACE), Regional Water Quality Control Board RWQCB), CDFW, and/or the USFWS under provisions ofthe federal Clean Water Act (e. g., Sections 303, 304, 404) and State of California Porter -Cologne Water Quality Control Act.

Terra Bella Public Storage & ALTA Housing Project 52 Initial Study City of Mountain View November 2022
Resolution No. 18773

Fish and Game Code Section 1602
Streambeds and banks, as well as associated riparian habitat, are regulated by the CDFW per Section 1602 of the Fish and Game Code. Work within the bed or banks of a stream or the adjacent riparian habitat requires a Streambed Alteration Agreement from the CDFW.

Regional
Santa Clara Valley Habitat Plan/ Natural Community Conservation Plan The Santa Clara Valley Habitat Plan/ Natural Community Conservation Plan ( Habitat Plan) covers approximately 520, 000 acres, or approximately 62 percent of Santa Clara County. It was developed and adopted through a partnership between Santa Clara County, the Cities of San Jose, Morgan Hill, and Gilroy, Santa Clara Valley Water District ( Valley Water), Santa Clara Valley Transportation Authority ( VTA), USFWS, and CDFW. The Habitat Plan is intended to promote the recovery of endangered species and enhance ecological diversity and function, while accommodating planned growth in southern Santa Clara County. The Santa Clara Valley Habitat Agency is responsible for implementing the plan.

Local
Mountain View 2030 General Plan
The General Plan contains goals and policies to avoid significant impacts to biological resources. The following policies are applicable to the proposed project.

Policy Description
Infrastructure and Conservation Element
INC 16. 3 Habitat. Protect and enhance nesting, foraging and other habitat for special -status species and other wildlife.

INC 16. 6 Built environment habitat. Integrate biological resources, such as green roofs and native landscaping, into the built environment.

Parks, Open Space and Community Facilities Element
POS 12. 1 Heritage trees. Protect trees as an ecological and biological resource.

POS 12. 2 Urban tree canopy. Increase tree canopy coverage to expand shaded areas, enhance aesthetics and help reduce greenhouse gases.

POS 12. 3 Planter strip. Require tree planter stirps be wide enough to support healthy trees and well - maintained public infrastructure.

POS 12. 4 Drought -tolerant landscaping. Increase water -efficient, drought -tolerant and native landscaping where appropriate on public and private property.

Terra Bella Public Storage & ALTA Housing Project 53 Initial Study City of Mountain View November 2022
Resolution No. 18773

Mountain View Heritage Tree Preservation Ordinance
The City of Mountain View tree regulations protect all trees designated as " Heritage" trees ( Chapter 32, Article 2). Under this ordinance, a Heritage tree is defined as any one of the following:

A tree which has a trunk with a circumference of forty- eight ( 48) inches or more measured at fifty-four ( 54) inches above natural grade;
A multi -branched tree which has maj or branches below fifty-four ( 54) inches above the natural grade with a circumference offorty- eight ( 48) inches measured just below the first major trunk fork;
Any Quercus ( oak), Sequoia ( redwood), or Cedrus ( cedar) tree with a circumference of twelve 12) inches or more when measured at fifty-four ( 54) inches above natural grade; or A tree or grove of trees designated by resolution of the City Council to be of special historical value or of significant community benefit.

A tree removal permit is required from the City of Mountain View for the removal of Heritage trees.

It is unlawful to willfully injure, damage, destroy, move or remove a Heritage tree.

4. 4. 1. 2 Existing Conditions
The project site is completely developed and within an urban area. The site provides habitat and foraging opportunities for urban -adapted birds. Habitats primarily associated with Bay Area special - status species, such a riparian, wetland, salt marsh, freshwater marsh, and serpentine grassland habitats, are not present on or adjacent to the site. The nearest waterway is Stevens Creek, which is located approximately 0. 22- mile to the east ofthe proj ect site.

The primary biological resources on -site are trees. The project site currently contains three on -site trees, one of which is a protected Heritage tree under Section 32. 25 of the City Code, and 15 street trees located in public right of way. The tree locations are shown on Figure 4. 4- 1. The arborist reports evaluated the health and suitability for preservation of the trees on -site and found nine trees had a good" preservation suitability, eight trees had a " moderate" preservation suitability, and one tree had a " poor" preservation suitability. The predominant tree species on -site are Chinese Pistache trees and sweetgum trees, each of which comprise approximately 28 percent ( or 56 percent combined) of the trees within the project site. The largest tree identified is a red flowering gum tree located on the southern border of the project site along Terra Bella Avenue, which has a trunk circumference of approximately 148 inches and is in moderate health.

Terra Bella Public Storage & ALTA Housing Project 54 Initial Study City of Mountain View November 2022
y
ii
Residential Development Boundary
Storage Facility Development Boundary
APN Boundary N
Existing On -Site Trees
Existing Right -of -Way Street Trees
Heritage Tree
0 50 200 300 400 Feet
Aerial source: Google Earth Pro, May 27, 2022. Photo Date. Sep. 2020 1TY
R
14 rf"' I
74 --

7. mow
F
04 s
x
r
r
D
C
c
1312 11 10 09 ® O7 © ® OO s
f.. Terra Bella Avenue
Y
ti
I,
f '

EXISTING TREE LOCATIONS
z
z
o
c
R w 0
1 rD
O1 m 0
o
00 FIGURE 4. 4- 1 F" W
Resolution No. 18773

4. 4. 2 Impact Discussion
Would the project:
1) Have a substantial adverse effect, either
directly or through habitat modifications, on
any species identified as a candidate, sensitive,
or special status species in local or regional
plans, policies, or regulations, or by the
California Department of Fish and Wildlife
CDFW) or United States Fish and Wildlife
Service ( USFWS)?
2) Have a substantial adverse effect on any
riparian habitat or other sensitive natural
community identified in local or regional
plans, policies, regulations, or by the CDFW
or USFWS?
3) Have a substantial adverse effect on state or
federally protected wetlands ( including, but
not limited to, marsh, vernal pool, coastal,
etc.) through direct removal, filling,
hydrological interruption, or other means?
4) Interfere substantially with the movement of
any native resident or migratory fish or
wildlife species or with established native
resident or migratory wildlife corridors, or
impede the use of native wildlife nursery sites?
5) Conflict with any local policies or ordinances
protecting biological resources, such as a tree
preservation policy or ordinance?
6) Conflict with the provisions of an adopted
Habitat Conservation Plan, Natural
Community Conservation Plan, or other
approved local, regional, or state habitat
conservation plan?
Less than
Potentially Significant
Less than
Significant Significant
with Mitigation
Impact
Incorporated
Impact
No Impact
El Z
El Z
El Z
Impact 13I0- 1: The project would not have a substantial adverse effect, either directly or through habitat modifications, on any species identified as a candidate, sensitive, or special status species in local or regional plans, policies, or regulations, or by the CDFW or USFWS. ( Less than Significant Impact) As discussed in Section 4. 4. 1. 2 Existing Conditions, given the urbanized nature ofthe project site and surrounding area, there are no sensitive habitats or special -status species on or adjacent to the project site. Ofthe existing 18 trees ( three on -site trees and 15 street trees in public right-of-way, 17 would be removed due to interference with the project design including the right-of-way improvements detached sidewalk with landscape and street trees). The trees could provide nesting habitat for birds, Terra Bella Public Storage & ALTA Housing Project 56 Initial Study City of Mountain View November 2022
Resolution No. 18773

including migratory birds and raptors. Nesting birds are protected under provisions of the Migratory Bird Treaty Act and California Fish and Game Code Sections 3503, 3503. 5, and 2800.

Construction of the project during the breeding season could result in the incidental loss of fertile eggs or nestlings, or otherwise lead to nest abandonment. Disturbance that causes abandonment and/ or loss of reproductive effort is considered a taking by the CDFW. Any loss of fertile eggs, nesting raptors, or any activities resulting in nest abandonment would constitute an impact. Construction activities such as tree removal and site grading that disturb a nesting bird or raptor on -site or immediately adjacent to the construction zone would also constitute an impact.

In compliance with the MBTA and the CDFW code, the proposed project shall implement the following City standard condition of approval, to reduce or avoid construction -related impacts to nesting raptors and their nests.

City Standard Condition of Approval
COA BIO- 1. 1: Preconstruction Nesting Bird Survey: To the extent practicable, vegetation removal and construction activities shall be performed from September 1 through January 31 to avoid the general nesting period for birds. If construction or vegetation removal cannot be performed during this period, preconstruction surveys shall be performed no more than two days prior to construction activities to locate any active nests as follows:

The applicant shall be responsible for the retention of a qualified biologist to conduct a survey of the project site and surrounding 500' for active nests — with particular emphasis on nests of migratory birds —if construction ( including site preparation) begins during the bird nesting season, from February 1 through August

31. If active nests are observed on either the project site or the surrounding area, the qualified biologist, in coordination with the appropriate City staff, shall establish no -disturbance buffer zones around the nests ( usually 100' for perching birds and 300' for raptors). The no -disturbance buffer shall remain in place until the biologist determines the nest is no longer active or the nesting season ends. If construction ceases for two days or more and then resumes during the nesting season, an additional survey shall be necessary to avoid impacts on active bird nests that may be present.

With the implementation of the above City standard condition of approval COA 13I0- 1. 1, the project would result in a less than significant impact to nesting birds because preconstruction surveys would ensure no nesting birds or nests are located on -site during construction, and ifthey are, buffer zones would be established around nests during construction. ( Less than Significant Impact) Terra Bella Public Storage & ALTA Housing Project 57 Initial Study City of Mountain View November 2022
Resolution No. 18773

Impact BIO- 2: The project would not have a substantial adverse effect on any riparian habitat or other sensitive natural community identified in local or regional plans, policies, regulations or by the CDFW or USFWS. ( No Impact) The project site and adjacent sites are fully developed and do not contain sensitive habitats. There is no riparian habitat on or adjacent to the site. The nearest waterway is Stevens Creek, which is approximately 0. 22-mile east ofthe project site and is separated from the site by development and U. S. 101. Therefore, the project would not have an impact on state or federally protected riparian habitat or other sensitive natural community identified in local or regional plans and policies. ( No Impact) Impact BIO- 3: The project would not have a substantial adverse effect on state or federally protected wetlands through direct removal, filling, hydrological interruption, or other means. ( No Impact)
There is no wetland on or adjacent to the site. The nearest wetland to the project site is the riverine habitat located approximately 0.22-mile east of the project site at Stevens Creek.19 Therefore, the project would not have an impact on state or federally protected wetlands. ( No Impact) Impact BIO- 4: The project would not interfere substantially with the movement of any native resident or migratory fish or wildlife species or with established native resident or migratory wildlife corridors, or impede the use of native wildlife nursery sites. ( Less than Significant Impact)
Because the project site is surrounded by urban development, the site provides minimal dispersal habitat for native wildlife and does not function as a wildlife movement corridor. As discussed above, under Impacts BIO- 2 and BIO- 3, there are no riparian or wetland habitats on or adjacent to the site.

The project would implement the City standard condition of approval COA BIO- 1. 1 under Impact BIO- 1 to protect nesting birds, if present during construction. The project would, therefore, not substantially interfere with the movement of fish or wildlife species, nor interfere with established corridors or wildlife nursery sites. ( Less than Significant Impact) 19 United States Fish and Wildlife Service. National Wetlands Inventory, Surface Waters and Wetlands. Map. May 2021.

Terra Bella Public Storage & ALTA Housing Project 58 Initial Study City of Mountain View November 2022
Resolution No. 18773

Impact BIO- 5: The project would not conflict with any local policies or ordinances protecting biological resources, such as a tree preservation policy or ordinance. ( Less than Significant Impact)
General Plan Policies
The General Plan contains policies ( General Plan Policies INC 16. 3, INC 16. 6, POS 12. 1, POS 12. 2, and POS 12. 4) that protect habitat for special - status species, heritage trees, and the urban tree canopy, integrate biological resources to the built environment, and enhance the urban landscape. As discussed under Impact BIO- 1, the project would conduct a pre -construction nesting bird survey if construction activities would take place during nesting season. This would protect any potential nesting birds by establishing a protective buffer around the nests. The prof ect would install new landscaping throughout the project site and landscaping strips on the sidewalks along the project frontages, including a variety of California native plant species and drought -tolerant species that are low-water use.

The project would result in the removal of 17 trees. The on -site Heritage tree would be retained and protected according to the recommendations included in the arborist reports prepared for the project.

The proposed project would replace the removed trees by planting 125 replacement trees throughout the project area. For these reasons, the project would be consistent with General Plan policies related to protecting biological resources. ( Less than Significant Impact) Tree Preservation Ordinance
As discussed in Section 3. 0, the proposed project would remove two on -site trees and 15 street trees and would plant 125 new trees. The proposed project would implement the following City standard conditions of approval to comply with the City' s Tree Preservation Ordinance.

City Standard Conditions of Approval
COA BIO- 5. 1: The project shall implement the following measures:

Replacement: The applicant shall offset the loss of each tree with 19 replacement trees, for a total of 125 onsite trees. Each replacement tree shall be no smaller than a 24- inch box and shall be noted on the landscape plans submitted for building permit review as Heritage replacement trees.

Tree Protection Measures: The tree protection measures listed in the arborist' s report prepared by HMH Engineers dated December 20, 2021 shall be included as notes on the title sheet of all grading and landscape plans. These measures shall include, but may not be limited to, six-foot chain link fencing at the drip line, a continuous maintenance and care program, and protective grading techniques. Also, no materials may be stored within the drip line of any tree on the project site.

With implementation ofthe above City standard conditions of approval, the proposed project would not conflict with the City' s tree preservation ordinance. ( Less than Significant Impact) Terra Bella Public Storage & ALTA Housing Project 59 Initial Study City of Mountain View November 2022
Resolution No. 18773

Impact BIO- 6: The project would not conflict with the provisions of an adopted Habitat Conservation Plan, Natural Community Conservation Plan, or other approved local, regional, or state habitat conservation plan. ( No Impact) The project site is not part of an adopted habitat conservation plan, natural community conservation plan, or other approved local, regional, or state habitat conservation plan. The Habitat Plan is a conservation program to promote the recovery of endangered species in portions of Santa Clara County while accommodating planned development, infrastructure and maintenance activities. The City of Mountain View, including the project site, is located outside the Habitat Plan area and outside of the expanded study area for burrowing owl conservation. Therefore, it would not conflict with any approved local, regional, or state habitat conservation plan. ( No Impact) Terra Bella Public Storage & ALTA Housing Project 60 Initial Study City of Mountain View November 2022
Resolution No. 18773

4. 5 CULTURAL RESOURCES
The discussion in this section is based in part on a Cultural Resources Survey Report prepared by Archaeological/ Historical Consultants dated August 22, 2022. A copy of the Cultural Resources Survey Report, which contains confidential information related to archaeological resources, is on file at the City.

4. 5. 1 Environmental Setting

4. 5. 1. 1 Regulatory Framework
Federal and State
National Historic Preservation Act
Federal protection is legislated by the National Historic Preservation Act of 1966 ( NHPA) and the Archaeological Resource Protection Act of 1979. These laws maintain processes for determination of the effects on historical properties eligible for listing in the National Register of Historic Places NRHP). Section 106 of the NHPA and related regulations ( 36 Code of Federal Regulations [ CFR] Part 800) constitute the primary federal regulatory framework guiding cultural resources investigations and require consideration of effects on properties that are listed or eligible for listing in the NRHP.

Impacts to properties listed in the NRHP must be evaluated under CEQA.

The NRHP is the nation' s master inventory of historic resources that are considered significant at the national, state, or local level. The minimum criteria for determining NRHP eligibility include:

The property is at least 50 years old (properties under 50 years of age that are of exceptional importance or are contributors to a district can also be included in the NRHP); It retains integrity of location, design, setting, materials, workmanship, feeling, and associations; and
It possesses at least one of the following characteristics:
o Association with events that have made a significant contribution to the broad patterns of history;
o Association with the lives of persons significant in the past; o Distinctive characteristics of a type, period, or method of construction, or represents the work of a master, or possesses high artistic values, or represents a significant, distinguishable entity whose components may lack individual distinction; or o Has yielded, or may yield, information important to prehistory or history.

California Register of Historical Resources
The California Register of Historical Resources ( CRHR) is administered by the State Office of Historic Preservation and encourages protection of resources of architectural, historical, archeological, and cultural significance. The CRHR identifies historic resources for state and local planning purposes and Terra Bella Public Storage & ALTA Housing Project 61 Initial Study City of Mountain View November 2022
Resolution No. 18773

affords protections under CEQA. Under Public Resources Code Section 5024. 1( c), a resource may be eligible for listing in the CRHR if it meets any of the NRHP criteria. 20 Historical resources eligible for listing in the CRHR must meet the significance criteria described previously and retain enough of their historic character or appearance to be recognizable as historical resources and to convey the reasons for their significance. A resource that has lost its historic character or appearance may still have sufficient integrity for the CRHR ifit maintains the potential to yield significant scientific or historical information or specific data.

The concept of integrity is essential to identifying the important physical characteristics of historical resources and, therefore, in evaluating adverse changes to them. Integrity is defined as " the authenticity of a historical resource' s physical identity evidenced by the survival of characteristics that existed during the resource' s period of significance." The processes of determining integrity are similar for both the CRHR and NRHP and use the same seven variables or aspects to define integrity that are used to evaluate a resource' s eligibility for listing. These seven characteristics include 1) location, 2) design, 3) setting, 4) materials, 5) workmanship, 6) feeling, and 7) association.

California Native American Historical_ Cultural. and Sacred Sites Act The California Native American Historical, Cultural, and Sacred Sites Act applies to both state and private lands. The act requires that upon discovery of human remains, construction or excavation activity must cease, and the county coroner be notified.

Public Resources Code Sections 5097 and 5097. 98
Section 15064. 5 ofthe CEQA Guidelines specifies procedures to be used in the event of an unexpected discovery of Native American human remains on non- federal land. These procedures are outlined in Public Resources Code Sections 5097 and 5097. 98. These codes protect such remains from disturbance, vandalism, and inadvertent destruction, establish procedures to be implemented if Native American skeletal remains are discovered during construction of a project, and establish the Native American Heritage Commission ( NAHC) as the authority to resolve disputes regarding disposition of such remains.

Pursuant to Public Resources Code Section 5097. 98, in the event of human remains discovery, no further disturbance is allowed until the county coroner has made the necessary findings regarding the origin and disposition ofthe remains. Ifthe remains are of a Native American, the county coroner must notify the NAHC. The NAHC then notifies those persons most likely to be related to the Native American remains. The code section also stipulates the procedures that the descendants may follow for treating or disposing of the remains and associated grave goods.

California Office of Historic Preservation. " CEQA Guidelines Section 15064. 5( a)( 3) and California Office of Historic Preservation Technical Assistance Series # 6." Accessed August 31, 2020. hlW:// www. ohp. parks. ca. gov/ pages/ 1069/ files/ technical% 20assistance% 20bulletin% 206% 2O2O l l °/`20LIpdate. pdf.

Terra Bella Public Storage & ALTA Housing Project 62 Initial Study City of Mountain View November 2022
Resolution No. 18773

Local
Mountain View 2030 General Plan
The General Plan contains goals and policies to avoid significant impacts to cultural resources. The following policies are applicable to the proposed project.

Policy Description
Historic Preservation
LUD 11. 1 Historical preservation. Support the preservation and restoration of structures and cultural resources listed in the Mountain View Register of Historic Resources, the California Register of Historic Places or National Register of Historic Places.

LUD 11. 5 Archaeological and paleontological site protection. Require all new development to meet state codes regarding the identification and protection of archaeological and paleontological deposits.

LUD 11. 6 Human remains. Require all new development to meet state codes regarding the identification and protection of human remains.

City of Mountain View Code of Ordinances
The City' s Zoning Ordinance is in Chapter 36, Article 16 of the City Code and consists of land use regulations, based on policies ofthe General Plan, that have been enacted in order to promote the public health, safety, morals, comfort and general welfare throughout the City of Mountain View.

Division 15, Designation and Preservation of Historic Resources of the City' s Zoning Ordinance includes a process for recognizing, preserving, and protecting historical resources. Division 15, Section

36. 54. 55 establishes the Mountain View Register of Historic Resources as the City' s official list of historically significant buildings, structures, and sites that are considered during the development review process. The Mountain View Register has similar criteria for listing as the State of California Register and consists of historic resources that meet one or more of the following criteria ( refer to Division 15, Section 36. 54. 65):

1. Is strongly identified with a person who, or an organization which, significantly contributed to the culture, history or development of the City of Mountain View;

2. Is the site of a significant historic event in the City' s past; Embodies distinctive characteristics significant to the City in terms of a type, period, region, or method of construction or representative ofthe work of a master or possession ofhigh artistic value; and/ or

4. Has yielded, or maybe likely to yield, information important to the City' s prehistory or history.

Terra Bella Public Storage & ALTA Housing Project 63 Initial Study City of Mountain View November 2022
Resolution No. 18773

4. 5. 1. 2 Existing Conditions
Historic Resources
The City of Mountain View was historically used as ranch land and agricultural land during the 19th century and into the 20th century. In the early- to mid- 1900s, the City began to develop more industrial and commercial land uses. During this timeframe, the area surrounding the project site was part of the Terra Bella Acres subdivision, which was a rural settlement that contained primarily agricultural uses.

The project area was eventually annexed by the City in the 1960s and was subsequently zoned for industrial uses. The project site is currently development with a single- family residence construction in 1953 and 18 single -story storage buildings constructed in 1953. Based on the historic uses on -site and the lack of substantial development prior to the current structures, the project site has a low sensitivity to contain historic era archaeological resources.

To be considered a historic resource, a site must meet certain sets of criteria including relevance to local and regional history, its association with historic figures, and the distinctiveness of its architecture. The 18 single - story storage buildings are less than 50 years old, and therefore, not considered to be eligible historic resources. The single- family residence due to the age, was evaluated against the criteria of the NRHP and CRHR in addition to the criteria established by the City of Mountain View Register of Historic Resources. The evaluation determined that the building is typical of the Minimal Traditional architectural style that was common in the post -World War 11 period in the San Francisco Bay Area, was not associated with significant historical events or persons, designed by a notable architect, nor does it have the potential to yield information important to prehistory or history of the local area, state, or nation. Based on these characteristics, the evaluation concluded that the site does not contain any resources listed on or eligible for listing on the NRHP, CRHP, or the City of Mountain View Register of Historic Resources because the existing structure does not meet the criteria for historical significance which typically requires the building be constructed with a high level of artistry or be associated with historically significant events or people.

Prehistoric Resources
A records search at the Northwest Information Center of the California Historical Resources Information System ( CHRIS) was conducted to identify all recorded archaeological sites on and within one- half mile of the project site. The record search found a single Native American resource within one- half mile of the project site, which was located approximately 0. 4- mile east ofthe site.

The project site is located within a Holocene -age landform with relatively flat valley slopes. Sites with prehistoric resources are typically located in relatively flat areas in proximity to sources offresh water.

The nearest waterway is Stevens Creek, located approximately 0. 22- mile east ofthe project site. Based on these geographic factors, the project site would have a moderate sensitivity to contain buried prehistoric resources.

Terra Bella Public Storage & ALTA Housing Project 64 Initial Study City of Mountain View November 2022
Resolution No. 18773

4. 5. 2 Impact Discussion
Potentially
Significant
Impact
Less than
Significant
with Mitigation
Incorporated
Less than
Significant
Impact
No Impact
Would the project:
1) Cause a substantial adverse change in the
significance of a historical resource pursuant
to CEQA Guidelines Section 15064. 5'?
2) Cause a substantial adverse change in the
significance of an archaeological resource
pursuant to CEQA Guidelines Section
15064. 5'?
3) Disturb any human remains, including those
interred outside of dedicated cemeteries?
Impact CUL- 1• The project would not cause a substantial adverse change in the significance of a historical resource pursuant to CEQA Guidelines Section 15064. 5. ( No Impact)
The site and adjacent sites do not contain any resources listed on or eligible for listing on the NRHP or the CRHP; nor do they contain any resources listed on the City of Mountain View Register of Historic Resources. As discussed above under Section 4. 5. 1. 2 Existing Conditions, none of the buildings on -site are eligible for listing as historic resources under national, state, or local criteria.

Therefore, there would be no impact to historical resources pursuant to CEQA Guidelines Section 15064. 5. ( No Impact)
Impact CUL-2: The project would not cause a substantial adverse change in the significance of an archaeological resource pursuant to CEQA Guidelines Section 15064. 5.

Less than Significant Impact with Mitigation Incorporated) No archaeological resources have been previously identified on or adjacent to the site. As discussed in Section 4. 5. 1. 2 Existing Conditions, the site has a moderate sensitivity for pre -historic archaeological resources and a low sensitivity for historic - era archaeological resources. Unknown archaeological resources could be discovered on -site during excavation. If any archaeological resources or human remains were discovered as a result of construction activities on -site, the project would be required to implement the following City standard conditions of approval.

City Standard Conditions of Approval
COA CUL- 2. 1: The project shall implement the following measures:

Discovery of Archaeological Resources: If prehistoric, or historic -period cultural materials are unearthed during ground -disturbing activities, all work within 100 feet of the find shall be halted until a qualified archaeologist and Native American representative can assess the significance of the find.

Prehistoric materials might include obsidian and chert flaked -stone tools ( e. g., Terra Bella Public Storage & ALTA Housing Project 65 Initial Study City of Mountain View November 2022
Resolution No. 18773

projectile points, knives, scrapers) or toolmaking debris; culturally darkened soil (" midden") containing heat -affected rocks and artifacts; stone milling equipment ( e. g., mortars, pestles, handstones, or milling slabs); and battered - stone tools, such as hammerstones and pitted stones. Historic -period materials might include stone, concrete, or adobe footings and wall, filled wells or privies, and deposits of metal, glass, and/ or ceramic refuse. If the find is determined to be potentially significant, the archaeologist, in consultation with the Native American representative, shall develop a treatment plan that could include site avoidance, capping, or data recovery.

Discovery of Human Remains: In the event of the discovery of human remains during construction or demolition, there shall be no further excavation or disturbance of the site within a 50' radius of the location of such discovery, or any nearby area reasonably suspected to overlie adjacent remains. The Santa Clara County Coroner shall be notified and shall make a determination as to whether the remains are Native American. If the Coroner determines that the remains are not subject to their authority, the Coroner shall notify the Native American Heritage Commission, which shall attempt to identify descendants of the deceased Native American. If no satisfactory agreement can be reached as to the disposition of the remains pursuant to this State law, then the landowner shall reinter the human remains, and items associated with Native American burials on the property in a location not subject to further subsurface disturbance. A final report shall be submitted to the City' s Community Development Director prior to release of a Certificate of Occupancy. This report shall contain a description of the mitigation programs and its results, including a description of the monitoring and testing resources analysis methodology and conclusions, and a description ofthe disposition/ curation of the resources. The report shall verify completion of the mitigation program to the satisfaction of the City' s Community Development Director.

In addition, based on the project site' s moderate sensitivity for pre -historic archaeological resources, the following mitigation measure shall be implemented prior to the beginning of ground -disturbing activities on -site.

Mitigation Measure
MM CUL- 2. 1: Prior to ground -disturbing activities, a qualified archaeologist shall provide cultural resources training to all contractors and employees involved in trenching and excavation. The training shall inform participants how to recognize archaeological artifacts and deposits and discuss their obligations under the law and the project' s standard conditions of approval.

Compliance with the above City standard conditions of approval COA CUL-2. 1 and mitigation measure NM CUL- 2. 1 would reduce potential impacts to unrecorded archaeologic resources a less than significant level by providing cultural resources training to all contractors and employees involved in trenching and excavation, ensuring that any objects encountered during ground -disturbing activities are appropriately evaluated for cultural significance and protected if significant, and if human remains Terra Bella Public Storage & ALTA Housing Project 66 Initial Study City of Mountain View November 2022
Resolution No. 18773

are found, by contacting the Santa Clara County Coroner to determine if the remains are Native American. ( Less than Significant Impact with Mitigation Incorporated) Impact CUL-3: The project would not disturb any human remains, including those interred outside of dedicated cemeteries. ( Less than Significant Impact) As discussed in Impact CUL- 2, the project site has moderate sensitivity for pre -historic resources and ground -disturbing activities during prof ect construction could impact unknown underground resources, including human remains. With implementation of the City standard conditions of approval COA CUL- 2. 1 discussed under Impact CUL- 2, the project would reduce impacts to human remains to a less than significant level by contacting the Santa Clara County Coroner to determine ifthe remains are Native American. ( Less than Significant Impact)
Terra Bella Public Storage & ALTA Housing Project 67 Initial Study City of Mountain View November 2022
Resolution No. 18773

4. 6 ENERGY

4. 6. 1 Environmental Setting

4. 6. 1. 1 Regulatory Framework
Federal and State
Energy Star and Fuel Efficiency
At the federal level, energy standards set by the EPA apply to numerous consumer products and appliances ( e. g., the EnergyStarTM program). The EPA also sets fuel efficiency standards for automobiles and other modes of transportation.

Renewables Portfolio Standard Program
In 2002, California established its Renewables Portfolio Standard Program, with the goal ofincreasing the percentage of renewable energy in the state' s electricity mix to 20 percent of retail sales by 2010.

Governor Schwarzenegger issued Executive Order ( EO) 5- 3- 05, requiring statewide emissions reductions to 80 percent below 1990 levels by 2050. In 2008, EO 5- 14- 08 was signed into law, requiring retail sellers of electricity serve 33 percent of their load with renewable energy by 2020. In October 2015, Governor Brown signed SB 350 to codify California' s climate and clean energy goals.

A key provision of SB 350 requires retail sellers and publicly owned utilities to procure 50 percent of their electricity from renewable sources by 2030. SB 100, passed in 2018, requires 100 percent of electricity in California to be provided by 100 percent renewable and carbon -free sources by 2045.

Executive Order B- 55- 18 To Achieve Carbon Neutrality
In September 2018, Governor Brown issued EO- B- 55- 18 To Achieve Carbon Neutrality, setting a statewide goal " to achieve carbon neutrality as soon as possible, and no later than 2045, and achieve and maintain net negative emissions thereafter." The executive order requires CARB to " ensure future Scoping Plans identify and recommend measures to achieve the carbon neutrality goal." EO- B- 55- 18 supplements EO 5- 3- 05 by requiring not only emissions reductions, but also that, by no later than 2045, the remaining emissions be offset by equivalent net removals of CO2 from the atmosphere through sequestration.

California Building Standards Code
The Energy Efficiency Standards for Residential and Nonresidential Buildings, as specified in Title 24, Part 6 of the California Code of Regulations ( Title 24), was established in 1978 in response to a legislative mandate to reduce California' s energy consumption. Title 24 is updated approximately every three years. 21 Compliance with Title 24 is mandatory at the time new building permits are issued by city and county governments. 22
21 California Building Standards Commission. " California Building Standards Code." Accessed December 8, 2021. hlWs:// www.dgs. ca.gov/BSC/Codes# kViewBag.JuMpTo.

California Energy Commission ( CEC). " 2019 Building Energy Efficiency Standards." Accessed December 8, 2021. https:// www.energy. ca.gov/programs- and-topics/programs/ building- energy- efficiency- standards/ 2019- building- energy- efficiency.

Terra Bella Public Storage & ALTA Housing Project 68 Initial Study City of Mountain View November 2022
Resolution No. 18773

California Green Buildin4 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.

Additionally, CALGreen requires development projects to divert at least 65 percent of construction debris from landfills.

Advanced Clean Cars Program
CARB adopted the Advanced Clean Cars program in 2012 in coordination with the EPA and National Highway Traffic Safety Administration. The program combines the control of smog -causing pollutants and GHG emissions into a single coordinated set of requirements for vehicle model years 2015 through 2025. The program promotes development of environmentally superior passenger cars and other vehicles, as well as saving the consumer money through fuel savings.23 Local
Mountain View 2030 General Plan
The General Plan contains goals and policies to avoid significant impacts due to energy impacts. The following policies are applicable to the proposed project.

Policy Description
Land Use and Design
LUD- 10. 5 Building energy efficiency. Incorporate energy -efficient design features and materials into new and remodeled buildings.

Greenhouse Gas Reduction Program
The City of Mountain View certified the General Plan Program EIR (SCH 92011012069) and adopted the GGRP in July 2012. The GGRP is a separate but complementary document to the General Plan that implements the long- range GHG emissions reduction goals of the General Plan and serves as a programmatic GHG reduction strategy for CEQA tiering purposes. The GGRP includes goals, policies, performance standards, and implementation measures for achieving GHG emissions reductions, to meet the requirements of AB 32 and the BAAQMD 2030 emissions reductions goals. These measures include strategies such as green building performance and vehicle trip reduction requirements. The program includes a goal to improve communitywide emissions efficiency by 15 to 20 percent over 2005 levels by 2020 and by 30 percent over 2005 levels by 2030. 13 California Air Resources Board. " The Advanced Clean Cars Program." Accessed December 8, 2021. hlWs:// www. arb. ca.gov/ msprog/ acc/ acc. hftn.

Terra Bella Public Storage & ALTA Housing Project 69 Initial Study City of Mountain View November 2022
Resolution No. 18773

Mountain View Green Buildin4 Code and Reach Code
The Mountain View Green Building Code ( MVGBC) builds on the state -mandated CALGreen standards to include local green building standards and requirements for private development. The MVGBC does not require formal certification from a third -parry organization but requires projects to be designed and constructed to meet the intent of a third -party rating system. For residential projects proposing over five units, the MVGBC requires those buildings meet the intent of 70 GreenPoint Rated points from the Build It Green certification program, as well as compliance with mandatory CALGreen requirements. For non- residential projects proposing buildings between 5, 000 and 25, 000 square feet, the MVGBC requires those buildings meet the intent of LEED Certified and mandatory CALGreen requirements. For buildings over 25, 000 square feet, the MVGBC requires those buildings meet the intent of LEED Silver and mandatory CALGreen requirements.

In 2019, the Mountain View City Council approved amendments to Chapters 8, 14, and 24 of the MVGBC, referred to as the Reach Code amendments. The Reach Code amendments are applicable to any project submitted after December 31, 2019. These Reach Code amendments require new buildings to be all -electric with an exception for commercial spaces with specialized equipment that cannot operate with electric service if approved by the City.

City of Mountain View Construction and Demolition Ordinance According to the City' s Construction and Demolition Ordinance, all development projects involving demolition of greater than 5, 000 square feet are required to divert 50 percent of construction demolition debris from landfills. Documentation of this diversion is required prior to scheduling a final building inspection.

4. 6. 1. 2 Existing Conditions
Total energy usage in California was approximately 6, 956 trillion British thermal units ( Btu) in the year 2020, the most recent year for which this data was available. 24 Out of the 50 states, California is ranked second in total energy consumption and 49 h in energy consumption per capita. The breakdown by sector was approximately 21 percent ( 1, 507. 7 trillion Btu) for residential uses, 19. 6 percent ( 1, 358. 3 trillion Btu) for commercial uses, 24. 6 percent ( 1, 701. 2 trillion Btu) for industrial uses, and 34 percent 2,355. 5 trillion Btu) for transportation.25 This energy is primarily supplied in the form of natural gas, petroleum, nuclear electric power, and hydroelectric power.

Electricity
Electricity in Santa Clara County in 2019 was consumed primarily by the commercial sector ( 76 percent), followed by the residential sector consuming 24 percent. In 2019, a total of approximately 16, 664 gigawatt hours ( GWh) of electricity was consumed in Santa Clara County. 14 United States Energy Information Administration. " State Profile and Energy Estimates, 2020." Accessed July 6, 2022. htaps:// www.cia.gov/ state/? sid= CA#tabs- 2.
25 Ibid.

Terra Bella Public Storage & ALTA Housing Project 70 Initial Study City of Mountain View November 2022
Resolution No. 18773

The community -owned Silicon Valley Clean Energy ( SVCE) is the electricity provider for the City of Mountain View. 26 SVCE sources the electricity, and the Pacific Gas and Electric Company ( PG& E) delivers it to customers over their existing utility lines. Customers are automatically enrolled in the GreenStart plan and can upgrade to the GreenPrime plan. Both options are considered 100 percent GHG- emission free.

Natural Gas
PG& E provides natural gas services within the City of Mountain View. In 2020, approximately two percent of California' s natural gas supply came from in -state production, while the remaining supply was imported from other western states and Canada. 27 In 2020, California used 2, 144 trillion Btu of natural gas. 28 In 2020, Santa Clara County used less than one percent of the state' s total consumption of natural gas.
29 Fuel for Motor Vehicles
In 2019, 15. 4 billion gallons of gasoline were sold in California." The average fuel economy for light - duty vehicles ( autos, pickups, vans, and sport utility vehicles) in the United States has steadily increased from about 13. 1 miles per gallon (mpg) in the mid- 1970s to 24. 9 mpg in 201 9. 3 1 Federal fuel economy standards have changed substantially since the Energy Independence and Security Act was passed in 2007. That standard, which originally mandated a national fuel economy standard of 3 5 miles per gallon by the year 2020, was updated in March 2020 to require all cars and light duty trucks achieve an overall industry average fuel economy of 40.4 mpg by model year 2026. 32,33 16 Silicon Valley Clean Energy. " Frequently Asked Questions." Accessed July 6, 2022. hlWs:// www. svcleanenergy. orgNags.
21 California Gas and Electric Utilities. 2021 Supplemental California Gas Report. Accessed July 6, 2022. hlWs:// www. socalgas. com/ sites/ default/ files/ 2020- 10/ 2020 California Gas_ Report_ Joint_ Utility Biennial_ ComprehensiveFiling. p 28 United States Energy Information Administration. " Natural Gas Consumptions Estimates, 2020." Accessed July 6, 2022.
hlWs:// www. cia. gov/ state/ seds/ data. php? incfile=/ state/ seds/ sep fuel/ htmUfuel_ use _ ng. html& sid= US& sid= CA. 29 California Energy Commission. " Natural Gas Consumption by County." Accessed July 6, 2022. hlW:Hecdms. energy. ca.gov/ gasbycoupAy. aspx.
31 California Department of Tax and Fee Administration. " Net Taxable Gasoline Gallons." Accessed July 6, 2022. hlWs:// www.cdtfa.ca.gov/ datUortal/ dataset.htm?url=VeliicleTaxableFuelDist. 31 United States Environmental Protection Agency. " The 2020 EPA Automotive Trends Report: Greenhouse Gas Emissions, Fuel Economy, and Technology since 1975." January 2021. hlWs: Hnepis. epa. gov/ Exe/ ZyPDF. cgi? Dockgy= PIOIOU68. p . 32 United States Department of Energy. Energy Independence & Security Act of2007. Accessed July 6, 2022. hlW:// www. afdc. energy. gov/ laws/ cisa.
33 Public Law 110- 140— December 19, 2007. Energy Independence & Security Act of2007. Accessed July 6, 2022. hlW:// www. gpo. gov/ fdVs/ pkg/ PLAW- 110pub1140/ pdf/PLAW- 110pubI I40. pdf.

Terra Bella Public Storage & ALTA Housing Project 71 Initial Study City of Mountain View November 2022
Resolution No. 18773

4. 6. 2 Impact Discussion
Potentially
Significant
Impact
Less than
Significant
with Mitigation
Incorporated
Less than
Significant No Impact
Impact
Would the project:
1) Result in a potentially significant
environmental impact due to wasteful,
inefficient, or unnecessary consumption of
energy resources, during project construction
or operation?
2) Conflict with or obstruct a state or local plan
for renewable energy or energy efficiency?
Impact EN- 1• The project would not result in a potentially significant environmental impact due to wasteful, inefficient, or unnecessary consumption of energy resources, during project construction or operation. Less than Significant Impact) Construction
Construction of the proposed project would require energy for the manufacture and transportation of building materials, preparation of the project site ( e. g., demolition and grading), and the construction of the buildings. Construction processes are generally designed to be efficient in order to avoid excess monetary costs. Additionally, as noted in Section 4. 3 Air Quality, the project would implement BAAQMD BMPs as a City standard condition of approval COA AIR- 1. 1, which restricts equipment idling times and require the applicant to post signs on the project site reminding workers to shut off idle equipment, thus reducing energy waste. The project would also comply with CALGreen to divert a minimum of 65 percent of nonhazardous construction and demolition waste from landfills, thus minimizing energy impacts from the creation of excessive waste. For these reasons, the proposed project would not use fuel or energy in a wasteful manner during construction activities. ( Less than Significant Impact)
Operation
Occupation and operation of the project would consume energy for multiple purposes, including building heating and cooling, lighting, and appliance use. Operational energy also includes gasoline consumption from vehicles traveling to and from the project site. The net change in energy use from the project as compared to the existing uses is shown below in Table 4. 6- 1.

Terra Bella Public Storage & ALTA Housing Project 72 Initial Study City of Mountain View November 2022
Resolution No. 18773

Table 4. 6- 1: Estimated Existing and Project Energy Usage Electricity Natural Gas Gasoline ( gallons)
GWh) MMBtu)
A. Proposed Project 2. 71 0 113, 469
B. Existing Uses 0. 32 293 13, 750
Project Net Difference (A B) 2. 39 293 99, 719
Note: The estimated gasoline demand is based on the estimated annual VMT of 349, 252 for existing uses and 2, 882, 108 for the project, and an average fuel economy of 25. 4 mpg.

GWh = Gigawatt per hour
MMBtu = Metric Million British Thermal Unit
As shown in Table 4. 6- 1, the project would result in a net increase in electricity and gasoline demand, and a net decrease in natural gas demand ( due to the Reach Code) compared to existing conditions.

The project would be built to CALGreen requirements, Title 24 energy efficiency standards, and MVGBC, all of which would improve the efficiency ofthe overall project. As required by the MVGBC, the proposed residential building would meet the intent of 70 GreenPoint Rated points and the storage building would meet the intent of LEED Silver requirements and incorporate energy and emissions reduction features, such as:

Drought tolerant landscaping
High -efficiency irrigation fixtures
Water efficient interior plumbing fixtures
Solar panels on the rooftop ofthe residential building, and solar panels and solar -ready rooftops for the storage facility buildings
Omitting natural gas fixtures
EnergyStar appliances
Motion activated lighting in the storage facility buildings Limited use of heating and cooling in the storage facility buildings EV charging stations and EV- ready spaces
Furthermore, the project contains bicycle parking, is serviced by public transit and bicycle facilities that would promote alternative modes of transportation, which would reduce of use gasoline, and would plant 125 trees providing shade. Based on the proj ect' s adherence to current building codes and efficiency standards, and the implementation of energy reducing design features, the proposed project would not result in wasteful, inefficient, or unnecessary consumption of energy during project operation. ( Less than Significant Impact)
Terra Bella Public Storage & ALTA Housing Project 73 Initial Study City of Mountain View November 2022
Resolution No. 18773

Impact EN- 2: The project would not conflict with or obstruct a state or local plan for renewable energy or energy efficiency. ( Less than Significant Impact) The project would obtain electricity from SVCE, which is 100 percent GHG- emission free energy from renewable and hydroelectric sources, consistent with the state' s Renewables Portfolio Standard program and SB 350. In addition, the project would be designed per building standards that meet or exceed state mandated Title 24 energy efficiency standards, CALGreen standards, and MVGBC standards; especially with the inclusion of on -site solar generation on the residential and storage facility buildings. The project would be consistent with General Plan Policy LUD- 10. 5 by incorporating the energy -efficient design features discussed under Impact EN- 1. In addition, as further discussed in Section 4. 8 Greenhouse Gas Emissions, the project would be consistent with the 2030 GGRP by implementing measures such as a TDM Plan for the residential building ( see Appendix K for details), installing energy efficient appliances, and planting shade trees throughout the project area. For these reasons, the proposed project would not obstruct a state or local plan for renewable energy or energy efficiency. ( Less than Significant Impact)
Terra Bella Public Storage & ALTA Housing Project 74 Initial Study City of Mountain View November 2022
Resolution No. 18773

4. 7 GEOLOGY AND SOILS
The following discussion is based on a Geotechnical Engineering Exploration and Analysis prepared by Giles Engineering Associates, Inc. dated September 17, 2021. A copy of this report is included in Appendix D ofthis Initial Study.

4. 7. 1 Environmental Setting

4. 7. 1. 1 Regulatory Framework
State
Alquist-Priolo Earthquake Fault Zoning Act
The Alquist- Priolo Earthquake Fault Zoning Act was passed following the 1971 San Fernando earthquake. The act regulates development in California near known active faults due to hazards associated with surface fault ruptures. Alquist- Priolo maps are distributed to affected cities, counties, and state agencies for their use in planning and controlling new construction. Areas within an AlquistPriolo Earthquake Fault Zone require special studies to evaluate the potential for surface rupture to ensure that no structures intended for human occupancy are constructed across an active fault.

Seismic Hazards Mapping Act
The Seismic Hazards Mapping Act ( SE MA) was passed in 1990 following the 1989 Loma Prieta earthquake. The SHMA directs the California Geological Survey ( CGS) to identify and map areas prone to liquefaction, earthquake -induced landslides, and amplified ground shaking. CGS has completed seismic hazard mapping for the portions of California most susceptible to liquefaction, landslides, and ground shaking, including the central San Francisco Bay Area. The SHMA requires that agencies only approve projects in seismic hazard zones following site -specific geotechnical investigations to determine ifthe seismic hazard is present and identify measures to reduce earthquake - related hazards.

California Building Standards Code
The CBC prescribes standards for constructing safe buildings. The CBC contains provisions for earthquake safety based on factors including occupancy type, soil and rock profile, ground strength, and distance to seismic sources. The CBC requires that a site -specific geotechnical investigation report be prepared for most development projects to evaluate seismic and geologic conditions such as surface fault ruptures, ground shaking, liquefaction, differential settlement, lateral spreading, expansive soils, and slope stability. The CBC is updated every three years.

California Division of Occupational Safety and Health Regulations Excavation, shoring, and trenching activities during construction are subject to occupational safety standards for stabilization by the California Department of Industrial Relations, Division of Occupational Safety and Health ( Cal/ OSHA) under Title 8 ofthe California Code of Regulations and Excavation Rules. These regulations minimize the potential for instability and collapse that could injure construction workers on the site.

Terra Bella Public Storage & ALTA Housing Project 75 Initial Study City of Mountain View November 2022
Resolution No. 18773

Public Resources Code Section 5097. 5
Paleontological resources are the fossilized remains of organisms from prehistoric environments found in geologic strata. They range from mammoth and dinosaur bones to impressions of ancient animals and plants, trace remains, and microfossils. These materials are valued for the information they yield about the history ofthe earth and its past ecological settings. California Public Resources Code Section 5097. 5 specifies that unauthorized removal of a paleontological resource is a misdemeanor. Under the CEQA Guidelines, a project would have a significant impact on paleontological resources ifit would disturb or destroy a unique paleontological resource or site or unique geologic feature.

Local
Mountain View 2030 General Plan
The General Plan contains goals and policies to avoid significant impacts due to geology and soils impacts. The following policies are applicable to the proposed project.

Policy Description
Public Safety
PSA 4. 2 Natural disasters. Minimize impacts of natural disasters.

PSA 5. 1 New development. Ensure new development addresses seismically induced geologic hazards.

PSA 5. 2 Alquist- Priolo zones. Development shall comply with the Alquist- Priolo Earthquake Fault Zoning Act.

PSA 5. 4 Utility design. Ensure new underground facilities, particularly water and natural gas lines, are designed to meet current seismic standards.

Infrastructure and Conservation
INC 2. 3 Emergency -prepared infrastructure design. Require the use of available technologies and earthquake - resistant materials in the design and construction of all infrastructure projects, whether constructed by the City or others.

City of Mountain View Code of Ordinances
The City of Mountain View has adopted the California Building Code ( CBC), with amendments, as the reference building code for all projects in the City under Chapter 8 of the City Code. The City of Mountain View' s Building Inspection Department, which is part of the Community Development Department, is responsible for reviewing plans, issuing building permits, and conducting field inspections. Geotechnical investigation reports, as required by the CBC, would be reviewed by the City of Mountain View' s Building Inspection Division prior to issuance of building permits to ensure compliance. Based on the CBC, Mountain View requires geotechnical reports as conditions of approval for projects in the City.

Terra Bella Public Storage & ALTA Housing Project 76 Initial Study City of Mountain View November 2022
Resolution No. 18773

4. 7. 1. 2 Existing Conditions
Regional Geology
The project site is located in the Santa Clara Valley, an alluvial basin bounded by the Santa Cruz Mountains to the west, the Diablo Range to the east, and the San Francisco Bay to the north. The Valley was formed when sediments derived from both mountain ranges were exposed by tectonic uplift and regression ofthe inland sea which previously inundated the area. The Upper Quaternary sediments that comprise most of this basin consist of up to 1, 000 feet of poorly sorted gravel, sand, and clay which were deposited in alluvial fan and deltaic depositional environments.

On -Site Geology
Soils
The mapped soil profiles for the site indicate most of the project site is underlain by silty clay, and a portion of the eastern side of the project site is underlain by alluvial sand, fine-grained silt, and clay.

Near -surface soil sampling conducted on -site showed fill and possible fill soils at depths ranging from six to 10 feet below the surface. The fill was comprised of medium stiff to very stiff silty clay. Below the fill, native soils were identified that were comprised of soft to stiff silty clay, clayey silt, and loose to dense silty clayey sands and gravels. Expansive soils shrink and swell as a result of moisture changes. These changes can cause heaving and cracking of slabs -on -grade, pavements, and structures founded on shallow foundations. The soils collected in one of the borings collected on -site had plasticity index scores ranging from seven to 39, indicating a low to high expansion potential that varies depending on the depth ofthe soil.

Site Topography
The project site is relatively flat with some areas graded slightly for draining and, as a result, the risk of erosion or landslide is low. There are no hillsides or steep embankments on -site and the elevation throughout the site ranges from 32 to 36 feet above mean sea level. No unique geologic features, such as serpentine rock outcrops and boulders, pinnacles, or sandstone are located on -site.

Groundwater
The City of Mountain View overlies the Santa Clara Subbasin ( DWR Basin 2- 9. 02), a groundwater subbasin that is 297 square miles in area. Approximately three percent of Mountain View' s drinking water comes from local groundwater supply, while the rest is supplemented by water purchases from the Santa Clara Valley Water District ( Valley Water) and the SFPUC. Valley Water conducts an artificial groundwater recharge program that involves releasing locally conserved or imported water to in -stream and off -stream facilities to augment groundwater supplies in the Santa Clara groundwater basin.

Soil borings were performed at depths ranging from 32 feet to 36 feet below ground surface throughout the project site by Giles Engineering Associates, Inc. Based on the subsurface investigations, groundwater levels under the proj ect site have been measured between seven to eight feet below ground surface which is indicative of a relatively high water table in the area ( refer to Appendix D for more Terra Bella Public Storage & ALTA Housing Project 77 Initial Study City of Mountain View November 2022
Resolution No. 18773

specific details on the subsurface investigations completed).34 Water levels on -site may vary depending on seasonal precipitation, irrigation practices, and other climate conditions.

Seismic and Seismic - Related Hazards
Earthquake Faults
As the San Francisco Bay Area contains numerous active and potentially active faults, there is a high potential for seismic events such as fault surface ruptures and ground shaking, which can cause ground failure ( landslides), settlement, erosion, liquefaction, lateral spreading, and soil expansion. Faults in the region are capable of generating earthquakes of magnitude 6. 7 or higher. During a major earthquake on a segment of one of the nearby faults, strong to severe ground shaking is expected to occur at the project site. The ground shaking intensity felt at the project site would depend on the size of the earthquake ( magnitude), the distance from the site to the fault source, the directivity ( focusing of earthquake energy along the fault in the direction of the rupture), and the site -specific soil conditions.

While no faults cross the project site, there are several major faults nearby including the San Andreas Fault, approximately eight miles to the west; the Calaveras Fault, approximately 14 miles to the east; and the Hayward Fault, approximately 10 miles to the northeast. The project site is not located within a designated Alquist-Priolo Earthquake Fault Zone or a Santa Clara County Fault Hazard Zone.35, 36 Liquefaction
Soil liquefaction can be defined as a complete loss of strength that causes otherwise solid soil to take on the characteristics of a liquid. The types of soil most susceptible to this hazard are loose, saturated, uniformly graded, fine- grain sands that comprise the soil layer within approximately 45 to 50 feet of the ground surface. Liquefaction mostly frequently occurs under vibratory conditions, such as those created by seismic events. The project site is located within a State of California liquefaction hazard zone as well as a County Liquefaction Hazard Zone.37
As discussed previously groundwater was encountered on -site at approximate depths of seven to eight feet below ground surface ( bgs). The geotechnical investigation concluded that the soils at depths ranging from 20 to 30 feet bgs are potentially liquefiable based on their plasticity index scores; however, those layers of soil are between thick layers of non -liquefiable soils. Based on this, the potential for surface manifestations resulting from soil liquefaction at the project site is very low.

Lateral spreading typically occurs as a form of horizontal displacement of relatively flat -lying soil toward an open or " free" face such as an open body of water, channel, or excavation. This movement is often associated with liquefaction and commonly occurs on gentle slopes in seismically active regions. Lateral spread presents a significant hazard to the integrity of buildings and other structures.

There are no adjacent bodies of water, channels, or excavations in the vicinity of the site; therefore, there is a very low potential for lateral spreading on -site. 34 Giles Engineering Associates, Inc. " Geotechnical Engineering Exploration and Analysis." September 17, 2021 35 CA Department of Conservation. California Earthquake Hazards Zone. Webmap. Accessed June 29, 2022. hlWs: Haaps. conservation. ca. gov/ cgs/ EQZAPp/ Up/.
36 Santa Clara County. Geologic Hazards Zones. Maps 2 and 10. Map. October 2012. 31 California Geological Survey. Earthquake Zones ofRequiredInvestigation. Map. Accessed June 29, 2022. httDs: HmaDs. conservation. ca. L-ov/cgs/ infonnationwarchouse/ reL-ulatorvmaDs/ Terra Bella Public Storage & ALTA Housing Project 78 Initial Study City of Mountain View November 2022
Resolution No. 18773

Other Geologic Hazards
The project site is not located within a Santa Clara County Geologic Hazard Zone for compressible soil, landslides, or fault rupture. 38
Paleontological Resources
As discussed in Section 4. 5 Cultural Resources, the project site is located within a Holocene -age landform. Geologic units of Holocene age are generally not considered sensitive for paleontological resources, because biological remains younger than 10, 000 years are not usually considered fossils.

These sediments have low potential to yield fossil resources or to contain significant nonrenewable paleontological resources.39 These recent sediments, however, may overlie older Pleistocene sediments with high potential to contain paleontological resources. Pleistocene sediments, often found at depths of greater than 10 feet below the ground surface, have yielded the fossil remains of plants and extinct terrestrial vertebrates.

There have been no recorded fossils discovered within the City of Mountain View; however, two fossils have been discovered within two miles of the City' s sphere of influence. 41

4. 7. 2 Impact Discussion
Potentially
Significant
Impact
Less than
Significant
with Mitigation
Incorporated
Less than
Significant
Impact
No Impact
Would the project:
1) Directly or indirectly cause potential
substantial adverse effects, including the risk
of loss, injury, or death involving:

Rupture of a known earthquake fault, as
delineated on the most recent AlquistPriolo Earthquake Fault Zoning Map issued by the State Geologist for the area
or based on other substantial evidence of a
known fault ( refer to Division of Mines
and Geology Special Publication 42)?
Strong seismic ground shaking? El
Seismic -related ground failure, including
liquefaction?
Landslides?
2) Result in substantial soil erosion or the loss of
topsoil?
ss Ibid.
39 United States Department ofthe Interior. Potential Fossil Yield Classification System. July 2016. Accessed November 24, 2021. https:// www. blm. gov/ sites/ blm. gov/ files/ uploads/ IM2016- 124 attl. pdf 41 City of Mountain View. Draft 2030 General Plan and Greenhouse Gas Reduction Program Environmental Impact Report. SCH # 2011012069. September 2012. Page 470.

Terra Bella Public Storage & ALTA Housing Project 79 Initial Study City of Mountain View November 2022
Resolution No. 18773

Potentially
Significant
Impact
Less than
Significant
with Mitigation
Incorporated
Less than
Significant
Impact
No Impact
Would the project:
3) Be located on a geologic unit or soil that is
unstable, or that would become unstable as a
result of the project, and potentially result in
on- or off -site landslide, lateral spreading,
subsidence, liquefaction, or collapse?
4) Be located on expansive soil, as defined in the
current California Building Code, creating
substantial direct or indirect risks to life or
property?
5) Have soils incapable of adequately supporting
the use of septic tanks or alternative
wastewater disposal systems where sewers are
not available for the disposal of wastewater?
6) Directly or indirectly destroy a unique
paleontological resource or site or unique
geological feature?
Impact GEO- 1: The project would not directly or indirectly cause potential substantial adverse effects, including the risk ofloss, injury, or death involving rupture of a known earthquake fault, as delineated on the most recent Alquist- Priolo Earthquake Fault Zoning Map issued by the State Geologist for the area or based on other substantial evidence of a known fault; strong seismic ground shaking; seismic - related ground failure, including liquefaction; or landslides. ( Less than Significant Impact)
Fault Rupture
The project site is not located in an Alquist- Priolo Earthquake Fault Zone and no known faults cross the site. While existing faults that are currently considered active are located within 15 miles ofthe site i.e., the Hayward, San Andreas, and Calaveras faults), the proposed project is located outside oftheir fault rupture zones. For these reasons, the project would not directly or indirectly cause potential substantial adverse effects from rupture of a known earthquake fault. (No Impact) Seismic Ground Shaking
There are several major fault lines within approximately 14 miles of the project site that have the potential to produce a major earthquake during the lifespan ofthis project. During a major earthquake, this site is expected to experience very strong to severe ground shaking. The level ofintensity of this ground shaking at the project site would depend on a variety offactors such as the magnitude, distance from the site to the fault source, and the site -specific soil conditions. The ground shaking could potentially damage structures and threaten the safety of occupants in the proposed development.

Terra Bella Public Storage & ALTA Housing Project 80 Initial Study City of Mountain View November 2022
Resolution No. 18773

City Standard Condition of Approval
COA GEO- 1. 1: Geotechnical Report: The applicant shall have a design -level geotechnical investigation prepared which includes recommendations to address and mitigate geologic hazards in accordance with the specifications of California Geological Survey ( CGS) Special Publication 117, Guidelines for Evaluating and Mitigating Seismic Hazards, and the requirements of the Seismic Hazards Mapping Act. The report shall be submitted to the City during building plan check, and the recommendations made in the geotechnical report shall be implemented as part of the project and included in building permit drawings and civil drawings as needed.

Recommendations may include considerations for design of permanent below - grade walls to resist static lateral earth pressures, lateral pressures caused by seismic activity, and traffic loads; method for backdraining walls to prevent the build- up of hydrostatic pressure; considerations for design of excavation shoring system; excavation monitoring; and seismic design.

The project would be required to adhere to the current CBC and recommendations in the site -specific geotechnical report prepared for the project, as described in the above City standard condition of approval COA GEO- 1. 1, to reduce seismic and seismic -related hazards ( including ground shaking, liquefaction, and expansive soils) to a less than significant level by requiring the project be properly designed, engineered, and constructed. As such, the existing seismic hazards on the project would not be exacerbated by the project that it would impact ( or worsen) off -site conditions. ( Less than Significant Impact)
Liquefaction and Lateral Spreading
As discussed previously in Section 4. 7. 1. 2, the project site is located within a State and County designated liquefaction hazard zone. The geotechnical investigation conducted on -site discovered groundwater at a depth of approximately seven to eight feet bgs and layers of potentially liquefiable soil approximately 20 to 30 feet bgs that are between thick layers of non -liquefiable soil.

Due to this soil profile, the geotechnical analysis performed on -site determined that the likelihood of surface manifestations such as sand boils or a loss ofload bearing potential is very low. The most likely liquefaction impact that a large seismic event would cause on -site is liquefaction induced settlement.

In the event of a large seismic event, there is the potential that the ground surface could settle up to one inch. The potential for liquefaction induced settlement would decrease significantly with the implementation of the recommended ground improvements identified in the geotechnical analysis required under City standard condition of approval COA GEO- 1. 1. Adherence to the current CBC and the recommendations in the site -specific geotechnical report would reduce the risk of liquefaction at the project site to a less than significant level.

There are no adjacent bodies of water, channels, or excavations in the vicinity of the site that would increase the potential for lateral spreading, therefore, the project would not exacerbate such conditions off -site. For these reasons, the project would not cause potential substantial adverse effects related to liquefaction and lateral spreading. ( Less than Significant Impact) Terra Bella Public Storage & ALTA Housing Project 81 Initial Study City of Mountain View November 2022
Resolution No. 18773

Landslides
As discussed under Section 4. 7. 1. 2, the project site is not located in a designated landslide hazard zone.

The project site is relatively flat and is not located in the vicinity of steep embankments that could increase the risk of landslides affecting the site. Construction of the project would not include substantial earthwork that would create unstable slopes that would exacerbate any existing landslide risks. ( No Impact)
Impact GEO- 2: The project would not result in substantial soil erosion or the loss of topsoil.

Less than Significant Impact)
Ground disturbance related to the demolition of the existing buildings and improvements on -site and excavation and construction of the proposed buildings would occur on -site. Transportation of construction materials and equipment to and from the project site could also result in disturbance of the soils. These activities would increase exposure of soil to wind and water erosion and increase sedimentation.

As discussed in Section 4. 10 Hydrology and Water Quality, the project would be required to obtain coverage under the State of California Construction General Permit prior to issuance of a demolition permit or a grading permit from the city. This would require preparation of a Stormwater Pollution Prevention Plan ( SWPPP), which would outline the erosion control and site stabilization BMPs to be implemented on -site. By implementing these best management practices and the recommendations of the site -specific geotechnical report, erosion and sedimentation impacts would be less than significant.

Less than Significant Impact)
Impact GEO- 3: The project would not be located on a geologic unit or soil that is unstable, or that would become unstable as a result of the project, and potentially result in on- or off -site landslide, lateral spreading, subsidence, liquefaction, or collapse.

Less than Significant Impact)
As discussed under Impact GEO- 1, adherence to the current CBC and recommendations in the site - specific geotechnical report ( as required by City standard condition of approval COA GEO- 1. 1) regarding ground improvements and construction methods would reduce the risk of liquefaction at the project site to a less than significant level.

Valley Water actively monitors for land subsidence through surveying, groundwater elevation monitoring, and data from compaction wells. Valley Water reduces the potential for land subsidence throughout the Santa Clara Valley by recharging groundwater basins with local and imported surface water. The project would be connected to the City' s water system and would not require permanent groundwater extraction wells on -site. As noted in Section 4. 10 Hydrology and Water Quality, the project would require temporary groundwater dewatering during construction due to the presence of groundwater seven to eight feet bgs and the maximum excavation depth of eight feet. The City standard condition of approval COA GEO- 1. 1 includes evaluation and implementation of measures to minimize dewatering during construction, which would prevent subsidence from the temporary construction dewatering. For this reason, the project is expected to have a less than significant impact on subsidence.

Terra Bella Public Storage & ALTA Housing Project 82 Initial Study City of Mountain View November 2022
Resolution No. 18773

As discussed under Section 4. 7. 1. 2 and Impact GEO- 1, the project site is not subject to landslide, lateral spreading, or other forms of ground failure. ( Less than Significant Impact) Impact GEO- 4: The project would be located on expansive soil, as defined in the current California Building Code, however, the project would not be creating substantial direct or indirect risks to life or property. ( Less than Significant Impact)
Expansive soils possess a " shrink -swell" characteristic. Shrink -swell is the cyclic change in volume expansion and contraction) that occurs in fine- grained clay sediments from the process of wetting and drying. Structural damage may result over a long period of time, usually the result of inadequate soil and foundation engineering or the placement of structures directly on expansive soils. The site -specific geotechnical analysis completed for the project site found that the soil within the top 15 feet bgs has a low degree of expansive potential and the soil between 20 to 30 feet bgs has a high degree of expansive potential. Although expansive soils can be a hazard, itis mitigated through adherence with the standard engineering and building practices and techniques specified in the CBC and adherence to the recommendations in the site -specific geotechnical report.

As required by City standard condition of approval COA GE0- 1. 1, the project shall implement all structural recommendations provided in the design -level geotechnical investigation report. With adherence to these recommendations and the current CBC, the project would not create substantial direct or indirect risks to life or property due to expansive soils. ( Less than Significant Impact) Impact GEO- 5: The project would not have soils incapable of adequately supporting the use of septic tanks or alternative wastewater disposal systems where sewers are not available for the disposal of wastewater. ( No Impact)
The project would connect to the City' s existing sanitary sewer system. Therefore, the project would not need to support septic tanks or alternative wastewater disposal systems on -site. ( No Impact) Impact GEO- 6: The project would not directly or indirectly destroy a unique paleontological resource or site or unique geological feature. ( Less than Significant Impact) No paleontological resources have been identified in the City of Mountain View; however, construction and excavation could result in the disturbance of unknown resources. The project would implement the following City standard condition of approval to reduce impacts to unknown paleontological resources.

City Standard Condition of Approval
COA GEO- 6. 1: Discovery Of Paleontological Resources: In the event a fossil is discovered during construction of the project, excavations within 50 feet of the find shall be temporarily halted or delayed until the discovery is examined by a qualified paleontologist, in accordance with Society of Vertebrate Paleontology standards.

The City shall include a standard inadvertent discovery clause in every construction contract to inform contractors of this requirement. If the find is determined to be Terra Bella Public Storage & ALTA Housing Project 83 Initial Study City of Mountain View November 2022
Resolution No. 18773

significant and if avoidance is not feasible, the paleontologist shall design and carry out a data recovery plan consistent with the Society of Vertebrate Paleontology standards.

With implementation ofthe above standard condition, the proposed would result in less than significant impacts to paleontological resources by halting work if a fossil is discovered, examining the significance of the fossil, and avoiding the resource or implement a data recovery plan if avoidance is not feasible. ( Less than Significant Impact)
Terra Bella Public Storage & ALTA Housing Project 84 Initial Study City of Mountain View November 2022
Resolution No. 18773

4. 8 GREENHOUSE GAS EMISSIONS
The following discussion is based, in part, on an Air Quality & Greenhouse Gas Assessment prepared by Illingworth & Rodkin, In. dated November 15. 2022. This report is attached as Appendix A to this Initial Study.

4. 8. 1 Environmental Setting

4. 8. 1. 1 Background Information
Gases that trap heat in the atmosphere, GHGs, regulate the earth' s temperature. This phenomenon, known as the greenhouse effect, is responsible for maintaining a habitable climate. In GHG emission inventories, the weight of each gas is multiplied by its global warming potential ( GWP) and is measured in units of CO2 equivalents ( CO2e). The most common GHGs are carbon dioxide ( CO2) and water vapor but there are also several others, most importantly methane ( CH4), nitrous oxide ( N20), hydrofluorocarbons ( HFCs), perfluorocarbons ( PFCs), and sulfur hexafluoride ( SF6). These are released into the earth' s atmosphere through a variety of natural processes and human activities.

Sources of GHGs are generally as follows:

CO2 and N20 are byproducts of fossil fuel combustion
N20 is associated with agricultural operations such as fertilization of crops CH4 is commonly created by off -gassing from agricultural practices ( e. g., keeping livestock) and landfill operations
Chlorofluorocarbons ( CFCs) were widely used as refrigerants, propellants, and cleaning solvents, but their production has been stopped by international treaty HFCs are now used as a substitute for CFCs in refrigeration and cooling PFCs and SF6 emissions are commonly created by industries such as aluminum production and semiconductor manufacturing
An expanding body of scientific research supports the theory that global climate change is currently causing changes in weather patterns, average sea level, ocean acidification, chemical reaction rates, and precipitation rates, and that it will increasingly do so in the future. The climate and several naturally occurring resources within California are adversely affected by the global warming trend. Increased precipitation and sea level rise will increase coastal flooding, saltwater intrusion, and degradation of wetlands. Mass migration and/ or loss of plant and animal species could also occur. Potential effects of global climate change that could adversely affect human health include more extreme heat waves and heat -related stress; an increase in climate -sensitive diseases; more frequent and intense natural disasters such as flooding, hurricanes, and drought; and increased levels of air pollution.

Terra Bella Public Storage & ALTA Housing Project 85 Initial Study City of Mountain View November 2022
Resolution No. 18773

4. 8. 1. 2 Regulatory Framework
State
Assembly Bill 32
Under the California Global Warming Solutions Act, also known as AB 32, CARB established a statewide GHG emissions cap for 2020, adopted mandatory reporting rules for significant sources of GHGs, and adopted a comprehensive plan, known as the Climate Change Scoping Plan, identifying how emission reductions would be achieved from significant GHG sources.

In 2016, SB 32 was signed into law, amending the California Global Warming Solution Act. SB 32, and accompanying EO B- 30- 15, require CARB to ensure that statewide GHG emissions are reduced to 40 percent below the 1990 level by 2030. CARB updated its Climate Change Scoping Plan in December of 2017 to express the 2030 statewide target in terms of million metric tons of CO2e MMTCO2e). Based on the emissions reductions directed by SB 32, the annual 2030 statewide target emissions level for California is 260 MMTCO2e.

Senate Bill 375
SB 375, known as the Sustainable Communities Strategy and Climate Protection Act, was signed into law in September 2008. SB 375 builds upon AB 32 by requiring CARB to develop regional GHG reduction targets for automobile and light truck sectors for 2020 and 2035. The per capita GHG emissions reduction targets for passenger vehicles in the San Francisco Bay Area include a seven percent reduction by 2020 and a 15 percent reduction by 2035.

Consistent with the requirements of SB 375, the Metropolitan Transportation Commission ( MTC) partnered with the Association of Bay Area Governments ( ABAG), BAAQMD, and the Bay Conservation and Development Commission to prepare the region' s Sustainable Communities Strategy ( SCS) as part ofthe Regional Transportation Plan process. The SCS is referred to as Plan Bay Area 2050. Plan Bay Area 2050 establishes a course for reducing per capita GHG emissions through the promotion of compact, high -density, mixed -use neighborhoods near transit, particularly within identified Priority Development Areas ( PDAs).

California Building Standards Code
The Energy Efficiency Standards for Residential and Nonresidential Buildings, as specified in Title 24, Part 6 of the California Code of Regulations ( Title 24), was established in 1978 in response to a legislative mandate to reduce California' s energy consumption. Title 24 is updated approximately every three years. 41 Compliance with Title 24 is mandatory at the time new building permits are issued by city and county governments. 42
41 California Building Standards Commission. " California Building Standards Code." Accessed December 8, 2021. hlWs:// www.dgs. ca.gov/BSC/Codes# kViewBag.JuMpTo.
42 California Energy Commission ( CEC). " 2019 Building Energy Efficiency Standards." Accessed December 8, 2021. https:// www.energy. ca.gov/programs- and-topics/programs/ building- energy- efficiency- standards/ 2019- building- energy- efficiency.

Terra Bella Public Storage & ALTA Housing Project 86 Initial Study City of Mountain View November 2022
Resolution No. 18773

California Green Buildin4 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.

Additionally, development projects subject to CALGreen requirements are required to divert at least 65 percent of construction debris from landfills.

Regional and Local
2017 Clean Air Plan
To protect the climate, the 2017 CAP ( prepared by BAAQMD) includes control measures designed to reduce emissions of methane and other super- GHGs that are potent climate pollutants in the near -term, and to decrease emissions of carbon dioxide by reducing fossil fuel combustion.

CEQA Air Quality Guidelines
The BAAQMD CEQA Air Quality Guidelines are intended to serve as a guide for those who prepare or evaluate air quality impact analyses for projects and plans in the San Francisco Bay Area. The jurisdictions in the San Francisco Bay Area Air Basin utilize the thresholds and methodology for assessing GHG impacts developed by BAAQMD within the CEQA Air Quality Guidelines. The guidelines include information on legal requirements, BAAQMD rules, methods of analyzing impacts, and recommended mitigation measures.

City of Mountain View 2030 General Plan
The General Plan contains goals and policies to avoid significant impacts due to greenhouse gas emissions impacts. The following goals and policies are applicable to the proposed project.

Policy Description
INC- 5. 2 Citywide water conservation. Reduce water waste and implement water conservation and efficiency measures throughout the city.

INC- 5. 5 Landscape efficiency. Promote water -efficient landscaping including drought -tolerant and native plants, along with efficient landscape irrigation techniques.

LUD- 3. 1 Land use and transportation. Focus higher land use intensities and densities within half -mile of public transit service, and along major commute corridors. 2030 Greenhouse Gas Reduction Program
The City of Mountain View certified the General Plan Program EIR (SCH 92011012069) and adopted the GGRP in July 2012. The GGRP is a separate but complementary document to the General Plan that implements the long-range GHG emissions reduction goals of the General Plan and serves as a programmatic GHG reduction strategy for CEQA tiering purposes. The GGRP includes goals, policies, performance standards, and implementation measures for achieving GHG emissions reductions, to Terra Bella Public Storage & ALTA Housing Project 87 Initial Study City of Mountain View November 2022
Resolution No. 18773

meet the requirements of AB 32 and the BAAQMD 2030 emissions reductions goals. These measures include strategies such as green building performance and vehicle trip reduction requirements. The program includes a goal to improve communitywide emissions efficiency by 15 to 20 percent over 2005 levels by 2020 and by 30 percent over 2005 levels by 2030.

Climate Protection Roadmap
The City' s Climate Protection Roadmap ( CPR), completed in 2015, presents a projection of GHG emissions through 2050 and several strategies that would help the City reduce absolute communitywide GHG emissions to 80 percent below 2005 levels by 2050.

Mountain View Green Buildin4 Code and Reach Code
The MVGBC builds on the state -mandated CALGreen standards to include local green building standards and requirements for private development. The MVGBC does not require formal certification from a third -party organization but requires projects to be designed and constructed to meet the intent of a third -party rating system. For residential projects proposing over five units, the MVGBC requires those buildings meet the intent of 70 GreenPoint Rated points from the Build it Green certification program, as well as compliance with mandatory CALGreen requirements. For nonresidential projects proposing buildings between 5, 000 and 25, 000 square feet, the MVGBC requires those buildings meet the intent of LEED Certified and mandatory CALGreen requirements. For buildings over 25, 000 square feet, the MVGBC requires those buildings meet the intent of LEED Silver and mandatory CALGreen requirements.

In 2019, the Mountain View City Council approved amendments to Chapters 8, 14, and 24 of the MVGBC, referred to as Reach Code amendments. The Reach Code amendments are applicable to any project submitted after December 31, 2019. These Reach Code amendments require new buildings to be all -electric with an exception for commercial spaces with specialized equipment that cannot operate with electric service if approved by the City.

4. 8. 1. 3 Existing Conditions
Unlike emissions of criteria and toxic air pollutants, which have regional and local impacts, emissions of GHGs have a broader, global impact. Global warming is a process whereby GHGs accumulating in the upper atmosphere contribute to an increase in the temperature of the earth and changes in weather patterns.

The existing uses on -site generate GHG emissions as a result of energy ( electricity and natural gas) consumption, vehicle trips to and from the site, solid waste generation, and water usage.

Terra Bella Public Storage & ALTA Housing Project 88 Initial Study City of Mountain View November 2022
Resolution No. 18773

4. 8. 2 Impact Discussion
Potentially
Significant
Impact p
Less than
Significant
with Mitigation
Incorporated
Less than
Significant
Impact p
No Impact
Would the project:
1) Generate greenhouse gas ( GHG) emissions,
either directly or indirectly, that may have a
significant impact on the environment?
2) Conflict with an applicable plan, policy, or
regulation adopted for the purpose of reducing
the emissions of GHGs?
Where available, the significance criteria established by the applicable air quality management or air pollution control district may be relied upon to make the determinations. As described in Section

4. 8. 1. 2, BAAQMD adopted GHG thresholds of significance to assist in the review of projects under CEQA. These thresholds were designed to establish the level at which BAAQMD has determined that GHG emissions would cause significant environmental impacts. On April 20, 2022, BAAQIvM adopted new thresholds of significance for operational GHG emissions from new land use projects.

BAAQMD has identified the following thresholds:

A. Projects must include, at a minimum, the following project design elements:
a. Buildings
i. The proj ect will not include natural gas appliances or natural gas plumbing (in both residential and non- residential development).
ii. The project will not result in any wasteful, inefficient, or unnecessary energy usage as determined by the analysis required under CEQA Section 21100( b)( 3) and Section 15126. 2( b) of the State CEQA Guidelines.
b. Transportation
i. Achieve a reduction in project -generated vehicle miles traveled ( VMT) below the regional average consistent with the current version of the California Climate Change Scoping Plan ( currently 15 percent) or meet a locally adopted Senate Bill 743 VMT target, reflecting the recommendations provided in the Governor' s Office of Planning and Research' s Technical Advisory on Evaluating Transportation Impacts in CEQA:

1. Residential Projects: 15 percent ( 16. 8 percent in Petaluma) below the existing VW per capita

2. Office Projects: 15 percent below the existing VMT per employee

3. Retail Projects: no net increase in existing VMT
it. Achieve compliance with off-street electric vehicle requirements in the most recently adopted version of CALGreen Tier 2.

B. Be consistent with a local GHG reduction strategy that meets the criteria under State CEQA Guidelines Section 15183. 5( b).

Any new land use project would have to include either section A or B from the above list, not both, to have a less than significant GHG impact. Since the project proposes a General Plan amendment, it is Terra Bella Public Storage & ALTA Housing Project 89 Initial Study City of Mountain View November 2022
Resolution No. 18773

not consistent with the land use assumptions covered in the 2030 GGRP, therefore, Threshold B is not applicable, and Threshold A is used to evaluate the proj ect' s GHG impacts.

Impact GHG- 1: The project would not generate GHG emissions, either directly or indirectly, that may have a significant impact on the environment. ( Less than Significant Impact with Mitigation Incorporated)
Construction
Construction of the project would generate GHG emissions from on -site operation of construction equipment, vendor and hauling truck trips, and worker trips. Neither the City nor BAAQMD have an adopted threshold of significance for construction related GHG emissions. There is nothing atypical or unusual about the proj ect' s construction. In addition, the project would implement City standard condition of approval COA AIR- 1. 1 and mitigation measure NM AIR- 1. 1 to restrict idling of construction equipment and utilize energy - efficient equipment, which would in turn reduce GHG emissions. For these reasons, the project' s construction GHG emissions are less than significant.

Less than Significant Impact with Mitigation Incorporated) Operation
The project would intensify development on -site, therefore, it would generate new GHG emissions from energy -related emissions, mobile emissions from vehicles traveling to and from the site, and emissions from solid waste generation and water usage. Promoting dense development in urban infill locations and energy efficiency is key to reducing GHG emissions. For this reason, a project is determined to have a less than significant GHG emissions impact ifit can meet all the qualifications of either Threshold A (or B) described above. The project meets all the qualifications under Threshold A for the following reasons:

The project would comply with the City' s Reach Code, which prohibits natural gas infrastructure in new buildings, and requires new buildings to be 100- percent electric. The project does not include natural gas infrastructure to the proposed buildings.

The project would be required to meet current CALGreen mandatory green building standards and MVGBC standards. MVGBC requires higher standards than the CALGreen minimum requirement. As discussed under Impact EN- 1, the project would not result in a wasteful, inefficient, or unnecessary consumption of energy during project operation. The storage buildings would be required to meet the intent of LEED Silver requirements since the buildings combined would be over 25, 000 square feet, and the residential building would be required to meet the intent of 70 GreenPoint Rated points from the Build it Green certification program since it proposes more than five units. Furthermore, the project has access to public transit and bicycle facilities and proposes to plant 125 trees ( increase of 121 trees compared to existing conditions) that would provide shade.

The project would meet the locally adopted SB 743 VMT target. As discussed in Section

4. 17 Transportation, the City' s VW policy includes screening criteria for projects which are presumed to have a less than significant transportation impact. The proposed storage buildings and residential building meet the less -than -significant screening criteria for a local - serving retail and affordable housing project.

Terra Bella Public Storage & ALTA Housing Project 90 Initial Study City of Mountain View November 2022
Resolution No. 18773

The project would comply with the current CALGreen Tier 2 and City' s Green Building Code EV requirements for off-street electric vehicle.43 The residential building would include 16 electric vehicle charging stations ( 15 percent oftotal parking spaces) and the remaining 89 spaces ( 85 percent oftotal parking spaces) would be pre -wired to be converted into electric vehicle charging stations in the future ( EV-ready). The storage buildings would be required to have 13 EV-ready spaces.

For these reasons, the project would not generate GHG emissions, either directly or indirectly, that may have a significant impact on the environment. ( Less than Significant Impact) Impact GHG-2: The project would not conflict with an applicable plan, policy, or regulation adopted for the purpose of reducing the emissions of GHGs. ( Less than Significant Impact with Mitigation Incorporated)
Plan Bay Area
The project site is not located within a PDA. However, it would not impede implementation of Plan Bay Area 2050 because the proposed storage facility would provide local commercial services and the proposed residential building would comply with CALGreen and MVGBC and place housing with bicycle parking in an urbanized area serviced by public transit and bicycle facilities that would promote alternative modes oftransportation. Additionally, the project would receive its energy from SVCE, who provides electricity generated from carbon free sources. ( Less than Significant Impact) 2017 Clean Air Plan
The BAAQMD 2017 CAP focuses on two goals: protecting public health and protecting the climate.

The 2017 CAP includes air quality standards and control measures designed to reduce emissions of methane, carbon dioxide, and other super- GHGs. As discussed in Section 4. 3 Air Quality under Impact AIR- 1, the project is consistent with the 2017 Clean Air Plan because the project would not exceed BAAQMD criteria air pollutant emissions thresholds during construction with implementation of BAAQMD BMPs ( City standard condition of approval COA AIR- 1. 1) and during operation. In addition, the project construction would implement mitigation measure MM AQ- 3. 1 by using energy - efficient alternative fueled construction equipment to reduce air pollutant ( DPM and PM2. 5) emissions. In addition, the project would implement City standard condition of approval COA AIR-3. 1 to reduce community health risks from building interior finishes containing formaldehyde.

For these reasons, the proposed project would not conflict with the 2017 CAP goal to reduce GHG emissions. ( Less than Significant Impact with Mitigation Incorporated) General Plan
The proposed project would be consistent with General Plan policies INC- 5. 2, INC- 5. 5, and LUD3. 1 by complying with Title 24 and CALGreen, and the City' s Green Building Code and Reach Code by installing drought tolerant landscaping with high -efficiency irrigation and water efficient interior 43 Current CALGreen Tier 2 requires 20 percent of residential parking spaces to be EV-ready. The City' s Green Building Code requires every space without a physical electric vehicle charger to be EV- ready. Current CALGreen Tier 2 and City' s Green Building Code both require non-residential development with 51 to 75 total parking spaces to provide 13 EV- ready spaces.

Terra Bella Public Storage & ALTA Housing Project 91 Initial Study City of Mountain View November 2022
Resolution No. 18773

fixtures, and intensifying development on an infill within a quarter mile from bus stops ( along Shoreline Boulevard) served by existing public transit service and in proximity to major commute corridors ( U.S. 101, SR 85, Shoreline Boulevard, and Middlefield Road). ( Less than Significant Impact)
Greenhouse Gas Reduction Plan
The GGRP identifies a series of GHG emissions reduction measures to be implemented by development projects that would help the City achieve its GHG reduction goals. While the proposed land use and development intensity on -site was not covered in the GHGRS, the project would comply with the applicable GGRP mandatory measures and would not be in conflict with the City' s GHG reduction goals, as discussed in Table 4. 8- 1 below. Furthermore, as discussed under Impact GHG- 1, the project would result in a less than significant GHG emissions impact. For these reasons, the project would not be in conflict with the GGRP. ( Less than Significant Impact) Table 4. 8- 1: Greenhouse Gas Reduction Plan Consistency Mandatory Measure Consistency
Measure E- 1. 3: Non -Residential Lighting Retrofit The project would demolish and replace the existing storage facility buildings with two new
buildings that would be constructed to meet Title
24, CALGreen, and the City' s Green Building
Code requirements.

Measure E- 1. 6: Exceed State Energy Standards in The proposed residential building would be New Residential Development constructed to meet the City' s Green Building Code requirements.

Measure E- 1. 7: Exceed State Energy Standards in The proposed storage facility buildings would be New Non -Residential Development constructed to meet the City' s Green Building Code requirements, which exceed state
standards.

Measure E- 1. 8: Building Shade Trees in The project residential building would include Residential Development landscaping trees on -site and along the sidewalks along the project frontages.

Measure T- 1. 1: Transportation Demand As discussed in Section 4. 17, the project would Management have a less than significant VMT impact.

Nevertheless, the proposed residential building
would implement a TDM plan ( see Appendix K
for details) to comply with this measure.

Terra Bella Public Storage & ALTA Housing Project 92 Initial Study City of Mountain View November 2022
Resolution No. 18773

4. 9 HAZARDS AND HAZARDOUS MATERIALS
The following discussion is based on the following reports: Phase I Environmental Site Assessment ESA) and Limited Phase 11 Subsurface Investigation for the 1020 Terra Bella site completed by Terraphase Engineering Inc. dated June 16, 2017, Soil Vapor Survey for the 1020 Terra Bella site completed by Essel Environmental dated June 6, 2022, Phase I ESA for the 1040 Terra Bella site completed by CRESurveys LTD dated November 2, 2019, Cornerstone Earth Group peer review of these reports, and a Phase 11 Soil Vapor Evaluation for the 1040 Terra Bella site completed by Cornerstone Earth Group dated October 24, 2022. Copies ofthe reports are included in Appendices E, F, G, H, and I ofthis Initial Study.

4. 9. 1 Environmental Setting

4. 9. 1. 1 Regulatory Framework
The storage, use, generation, transport, and disposal of hazardous materials and waste are highly regulated under federal and state laws. In California, the EPA has granted most enforcement authority over federal hazardous materials regulations to the California Environmental Protection Agency CalEPA). In turn, local agencies have been granted responsibility for implementation and enforcement of many hazardous materials regulations under the Certified Unified Program Agency ( CUPA) program.

Worker health and safety and public safety are key issues when dealing with hazardous materials.

Proper handling and disposal of hazardous material is vital ifit is disturbed during project construction.

Cal/ OSHA enforces state worker health and safety regulations related to construction activities.

Regulations include exposure limits, requirements for protective clothing, and training requirements to prevent exposure to hazardous materials. Cal/ OSHA also enforces occupational health and safety regulations specific to lead and asbestos investigations and abatement.

Federal and State
Federal Aviation Regulations Part 77
Federal Aviation Regulations, Part 77 Objects Affecting Navigable Airspace ( 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 Federal Aviation Administration ( 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 the ground.

Comprehensive Environmental Response, Compensation, and Liability Act The Comprehensive Environmental Response, Compensation, and Liability Act ( CERCLA), commonly known as Superfund, was enacted by Congress on December 11, 1980. This law created a tax on the chemical and petroleum industries and provided broad federal authority to respond directly to releases or threatened releases of hazardous substances that may endanger public health or the Terra Bella Public Storage & ALTA Housing Project 93 Initial Study City of Mountain View November 2022
Resolution No. 18773

environment. Over five years, $ 1. 6 billion was collected and the tax went to a trust fund for cleaning up abandoned or uncontrolled hazardous waste sites. CERCLA accomplished the following objectives:

Established prohibitions and requirements concerning closed and abandoned hazardous waste sites;
Provided for liability of persons responsible for releases of hazardous waste at these sites; and Established a trust fund to provide for cleanup when no responsible parry could be identified.

The law authorizes two kinds of response actions:

Short- term removals, where actions may be taken to address releases or threatened releases requiring prompt response; and
Long-term remedial response actions that permanently and significantly reduce the dangers associated with releases or threats of releases of hazardous substances that are serious, but not immediately life -threatening. These actions can be completed only at sites listed on the EPA' s National Priorities List.

CERCLA also enabled the revision of the National Contingency Plan ( NCP). The NCP provided the guidelines and procedures needed to respond to releases and threatened releases of hazardous substances, pollutants, or contaminants. The NCP also established the National Priorities List.

CERCLA was amended by the Superfund Amendments and Reauthorization Act on October 17, 1986. 44
Resource Conservation and Recovery Act
The Resource Conservation and Recovery Act (RCRA), enacted in 1976, is the principal federal law in the United States governing the disposal of solid waste and hazardous waste. RCRA gives the EPA the authority to control hazardous waste from the " cradle to the grave." This includes the generation, transportation, treatment, storage, and disposal of hazardous waste. RCRA also sets forth a framework for the management of non -hazardous solid wastes.

The Federal Hazardous and Solid Waste Amendments ( HSWA) are the 1984 amendments to RCRA that focused on waste minimization, phasing out land disposal of hazardous waste, and corrective action for releases. Some ofthe other mandates ofthis law include increased enforcement authority for the EPA, more stringent hazardous waste management standards, and a comprehensive underground storage tank program.
45 44 United States Environmental Protection Agency. " Superfund: CERCLA Overview." Accessed May 11, 2020. h!Ws:// www. epa. gov/ sLipcifund/ sLipcifund- cercla- ovelview. 45 United States Environmental Protection Agency. " Summary of the Resource Conservation and Recovery Act." Accessed May 11, 2020. https:// www. epa. gov/ laws- regulations/ summary- resource- conservation- and- recovery- act.

Terra Bella Public Storage & ALTA Housing Project 94 Initial Study City of Mountain View November 2022
Resolution No. 18773

Government Code Section 65962. 5
Section 65962. 5 of the Government Code requires CalEPA to develop and update a list of hazardous waste and substances sites, known as the Cortese List. The Cortese List is used by state and local agencies and developers to comply with CEQA requirements. The Cortese List includes hazardous substance release sites identified by the Department of Toxic Substances Control ( DTSC) and State Water Resources Control Board (SWRCB). 46
Toxic Substances Control Act
The Toxic Substances Control Act ( TSCA) of 1976 provides the EPA with authority to require reporting, record -keeping and testing requirements, and restrictions relating to chemical substances and/ or mixtures. Certain substances are generally excluded from TSCA, including, among others, food, drugs, cosmetics, and pesticides. The TSCA addresses the production, importation, use, and disposal of specific chemicals including polychlorinated biphenyls ( PCBs), asbestos, radon, and lead -based paint.

California Accidental Release Prevention Program
The California Accidental Release Prevention ( CalARP) Program aims to prevent accidental releases of regulated hazardous materials that represent a potential hazard beyond the boundaries of a property.

Facilities that are required to participate in the CalARP Program use or store specified quantities of toxic and flammable substances ( hazardous materials) that can have off -site consequences if accidentally released. The Santa Clara County Department of Environmental Health reviews CalARP risk management plans as the CUPA.

Asbestos- Containin4 Materials
Friable asbestos is any asbestos -containing material ( ACM) that, when dry, can easily be crumbled or pulverized to a powder by hand, allowing the asbestos particles to become airborne. Common examples of products that have been found to contain friable asbestos include acoustical ceilings, plaster, wallboard, and thermal insulation for water heaters and pipes. Common examples of non -friable ACMs are asphalt roofing shingles, vinyl floor tiles, and transite siding made with cement. The EPA began phasing out use of friable asbestos products in 1973 and issued a ban in 1978 on manufacture, import, processing, and distribution of some asbestos -containing products and new uses of asbestos products. 47 The EPA is currently considering a proposed ban on on -going use of asbestos. 48 National Emission Standards for Hazardous Air Pollutants ( NESHAP) guidelines require that potentially friable ACMs be removed prior to building demolition or remodeling that may disturb the ACMs. 46 California Environmental Protection Agency. " Cortese List Data Resources." Accessed May 28, 2020. hlWs: Hcalepa. ca. gov/ siteclealLtM/ corteselist/.
4' United States Environmental Protection Agency. " EPA Actions to Protect the Public from Exposure to Asbestos." Accessed April 19, 2022. hlWs:// www.epa.gov/ asbestos/ epa-actions-protect-public-exposure- asbestos 4slbid.

Terra Bella Public Storage & ALTA Housing Project 95 Initial Study City of Mountain View November 2022
Resolution No. 18773

CCR Title 8, Section 1532. 1
The United States Consumer Product Safety Commission banned the use of lead -based paint in 1978.

Removal of older structures with lead -based paint is subject to requirements outlined by the Cal/ OSHA Lead in Construction Standard, CCR Title 8, Section 1532. 1 during demolition activities.

Requirements include employee training, employee air monitoring, and dust control. If lead -based paint is peeling, flaking, or blistered, it is required to be removed prior to demolition.

Regional
Moffett Federal Airfield Comprehensive Land Use Plan
The project site is approximately 1. 2 miles southwest of the Moffett Federal Airfield, which is the closest airport to the site. The Moffett Federal Airfield Comprehensive Land Use Plan ( CLUP), adopted by the Santa Clara County Airport Land Use Commission, is intended to safeguard the general welfare of the inhabitants within the vicinity of the airport, as well as aircraft occupants.49 The CLUP is also intended to ensure that surrounding new land uses do not affect airfield operations. The CLUP identifies the Airfield' s Airport Influence Area ( AIA). The AIA is a composite of areas surrounding the Airfield that are affected by noise, height, and safety considerations. Within the AIA, the CLUP establishes a ( 1) noise restriction area, ( 2) height restriction area, and ( 3) safety restriction area.

Santa Clara CountyOperational Area Hazard Mitigation Plan The City' s Hazard Mitigation Plan, an annex to Santa Clara County' s Operational Area Hazard Mitigation Plan ( 2017), performs a full risk assessment on the nine hazards that present the greatest concern in Santa Clara County. The nine hazards focused on for this mitigation plan are climate change/ sea- level rise, dam and levee failure, drought, earthquakes, floods, landslides, severe weather, tsunamis, and wildfires.

The City' s annex, Chapter 11 of the document, provides a detailed overview of the City' s response capabilities, the organizational structure of local authorities, risk rating scores that determine which hazards present the greatest risk to Mountain View, and a priority schedule for mitigation measures planned by local and regional agencies.

Municipal Regional Permit Provision C. 12. f
PCBs were produced in the United States between 1955 and 1978 and used in hundreds of industrial and commercial applications, including building and structure materials such as plasticizers, paints, sealants, caulk, and wood floor finishes. In 1979, the EPA banned the production and use of PCBs due to their potential harmful health effects and persistence in the environment. PCBs can still be released to the environment today during demolition of buildings that contain legacy caulks, sealants, or other PCB -containing materials.

With the adoption ofthe San Francisco Bay Region Municipal Regional Stormwater National Pollutant Discharge Elimination System ( NPDES) Permit ( MRP) by the San Francisco Bay Regional Water 49 Santa. Clara County Airport Land Use Commission. Moffett Federal Airfield Comprehensive Land Use Plan.

November 2, 2016.

Terra Bella Public Storage & ALTA Housing Project 96 Initial Study City of Mountain View November 2022
Resolution No. 18773

Quality Control Board ( RWQCB) on November 19, 2015, Provision C. 12.f requires that permittees develop an assessment methodology for applicable structures planned for demolition to ensure PCBs do not enter municipal storm drain systems. 50 Municipalities throughout the Bay Area are currently modifying demolition permit processes and implementing PCB screening protocols to comply with Provision C. 12.f. Buildings constructed between 1950 and 1980 that are proposed for demolition must be screened for the presence of PCBs prior to the issuance of a demolition permit. Single- family homes and wood -frame structures are exempt from these requirements.

Local
Certified Unified Program Agency
The routine management of hazardous materials in California is administered under the Unified Program. The CaIEPA has granted responsibilities to the Santa Clara County Hazardous Materials Compliance Division ( HMCD) for implementation and enforcement of hazardous material regulations under the Unified Program as a CUPA. Through a formal agreement with the HMCD, the Mountain View Fire Department ( MVFD) implements hazardous materials programs for the City of Mountain View as a Participating Agency within the Unified Program. The MVFD coordinates with the HMCD to implement the Santa Clara County Hazardous Materials Management Plan and to ensure that commercial and residential activities involving classified hazardous substances are properly handled, contained, and disposed.

City of Mountain View 2030 General Plan
The General Plan contains goals and policies to avoid significant impacts regarding hazards and hazardous materials. The following policies are applicable to the proposed project.

Policy Description
PSA 3. 2 Protection from hazardous materials. Prevent injuries and environmental contamination due to the uncontrolled release of hazardous materials through prevention and enforcement of fire and life safety codes.

PSA 3. 3 Development review. Carry out development review procedures that encourage effective identification and remediation of contamination and protection of public and environmental health and safety.

INC 18. 1 Contamination prevention. Protect human and environmental health from environmental contamination.

4. 9. 1. 2 Existing Conditions
Site History
The project site has historically been used as agricultural land. In the early 1960s, a single- family residence ( which has since been converted into commercial office space), a detached garage, and a shed were constructed on the 1020 Terra Bella Avenue parcel. The existing storage facility on the 1040 Terra Bella Avenue parcel was constructed by 1974
California Regional Water Quality Control Board. San Francisco Bay Region Municipal Regional Stormwater NPDES Permit. November 2015.

Terra Bella Public Storage & ALTA Housing Project 97 Initial Study City of Mountain View November 2022
Resolution No. 18773

On -Site Contamination
The project site is developed with a dilapidated, uninhabitable, single -story residence with associated storage structures, storage facility buildings, and paved areas for parking. The residence was built in the early 1960s and the storage facility buildings were constructed by 1974. Based on the age of these buildings, it is possible that ACMs, lead -based paint, and PCBs are present. Prior to these structures, the project site was used as for agricultural purposes. There is potential for residual agricultural chemicals in the soil ( i.e., pesticides and fertilizers). The soil, groundwater, and soil vapor investigations completed on the 1020 Terra Bella Avenue parcel detected elevated levels ( exceeding residential ESLs) of petroleum hydrocarbons in the groundwater samples and benzene, ethylbenzene, xylenes, 1, 3- butadiene, chloroform, ethylene dibromide, and vinyl chloride in the soil vapor samples.

The soil vapor investigation completed on the 1040 Terra Bella Avenue parcel detected elevated levels exceeding commercial ESLs) of cis- 1, 2- di chloroethene, trichloroethene, and vinyl chloride in the soil vapor samples where Building 2 ofthe storage facility is proposed. There is also a potential presence of septic tanks underground on -site. The project site is not on the Cortese List51 and there are no recorded hazardous materials releases on the project site.

Off -Site Sources of Contamination
Land uses surrounding the project site include office, public/ quasi- public (i.e., church), and industrial uses. The closest hazardous material sites are closed leaking underground storage tank (LUST) cases.

The nearest case is ( Jasco Chemical Company) adjacent to the southwestern corner ofthe project site and it was closed as of October 1997. However, there are documented releases of petroleum hydrocarbon and chlorinated solvent up -gradient and cross -gradient to the project site.

Airport Safety
The project site is approximately 1. 2 miles southwest of the Moffett Federal Airfield and it is located within of the airfield' s AIA. The site is not located within the airfield' s 65 dBA noise contour area or airport safety zones. 52 FAR Part 77 requires 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. The project site is located within the mapped Part 77 182- foot above mean sea level ( amsl) horizontal surface. Elevations on -site range from 32 to 36 feet amsl; therefore, any structure exceeding 146 feet in height above grade would require submittal to the FAA for airspace safety review. 51 California Environmental Protection Agency. " Cortese List Data Resources." Accessed November 14, 2020. hlWs: Hcalepa. ca. gov/ siteclealLtM/ corteselist.
52 Santa Clara County Airport Land Use Commission. Moffett Federal Airfield Comprehensive Land Use Plan.

November 18, 2016.

Terra Bella Public Storage & ALTA Housing Project 98 Initial Study City of Mountain View November 2022
Resolution No. 18773

Wildland Fire Hazards
According to the California Department of Forestry and Fire Protection ( CAL FIRE), the project site is not located in a very high, high, or moderate fire hazard zone. 53 The site is also not within a Wildland Urban Interface ( WUI). s4

4. 9. 2 Impact Discussion
Potentially
Significant
Im p act
Less than
Significant with
Mitigation
Incorporated
Less than
Significant
Impact p
No Impact
Would the project:
1) Create a significant hazard to the public or the
environment through the routine transport, use,
or disposal of hazardous materials?
2) Create a significant hazard to the public or the
environment through reasonably foreseeable
upset and accident conditions involving the
release of hazardous materials into the
environment?
3) Emit hazardous emissions or handle hazardous
or acutely hazardous materials, substances, or
waste within one -quarter mile of an existing or
proposed school?
4) Be located on a site which is included on a list
of hazardous materials sites compiled pursuant
to Government Code Section 65962. 5 and, as
a result, would it create a significant hazard to
the public or the environment?
5) For a project located within an airport land use
plan or, where such a plan has not been
adopted, within two miles of a public airport
or public use airport, result in a safety hazard
or excessive noise for people residing or
working in the project area?
6) Impair implementation of or physically
interfere with an adopted emergency response
plan or emergency evacuation plan?
7) Expose people or structures, either directly or
indirectly, to a significant risk of loss, injury,
or death involving wildland fires?
53 California Department of Forestry and Fire Protection. " FHSZ Viewer." Webmap. Accessed June 17, 2022 hlWs: Hegis. fire. ca. gov/ FHSZ/.
54 California Department of Forestry and Fire Protection. Wildland Urban Interface ( WUI). December 2019.

Accessed June 17, 2022. htti) s:// frai). fire. ca. gov/ media/ 10300/ wtfi 19 ada. i) .

Terra Bella Public Storage & ALTA Housing Project 99 Initial Study City of Mountain View November 2022
Resolution No. 18773

Impact HAZ- 1: The project would not create a significant hazard to the public or the environment through the routine transport, use, or disposal of hazardous materials. ( Less than Significant Impact)
The proposed development would include a multi -family residential development and a storage facility. Unlike an industrial or manufacturing use that would routinely transport, use, or dispose large quantities of hazardous materials subject to regulatory oversight, these land uses would routinely use only limited amounts of fuels and oils for landscaping and maintenance activities, in addition to cleaning materials. The quantities used would not create a significant hazard to the public or the environment through the routine transport, use, or disposal of hazardous materials. ( Less than Significant Impact)
Impact HAZ- 2: The project would not create a significant hazard to the public or the environment through reasonably foreseeable upset and accident conditions involving the release of hazardous materials into the environment. ( Less than Significant Impact)
On -Site Soils and Groundwater
The project site soil could be contaminated with agricultural chemicals due to its historical use as agricultural land and lead due to the age ofthe building on -site. Furthermore, as discussed above, there are elevated levels of contaminants found in the groundwater and soil vapor samples previously collected on -site and known groundwater contamination west and south ofthe project site. The project would excavate soils to a maximum depth of eight feet, which would require off haul of potentially contaminated soils and dewatering of potentially contaminated groundwater. The project would be required to implement the City standard conditions of approval COA HAZ- 2. 1, described below, to ensure the project does not result in significant hazardous materials impacts during construction activities.

City Standard Conditions of Approval
COA HAZ- 2. 1: The project shall implement the following measures:

Soil and Groundwater Contamination: The applicant/ contractor is advised the proj ect site is located in, or in close proximity to, an area of known soil and groundwater contamination, including the proj ect site. The applicant/ contractor is responsible for working with the Santa Clara County Department of Environmental Health ( SCCDEH), the lead regulatory agency, to obtain the appropriate clearances and/ or recommendations for work in the contaminated area.

Soil Management Plan: Prepare a soil and groundwater management plan for review and approval by the Santa Clara County Department of Environmental Health ( SCCDEH). Proof of approval or actions for site work required by the SCCDEH must be provided to the Building Inspection Division prior to the issuance of any demolition or building permits.

Discovery of Contaminated Soils: If contaminated soils are discovered, the applicant shall ensure the contractor employs engineering controls and Best Terra Bella Public Storage & ALTA Housing Project 100 Initial Study City of Mountain View November 2022
Resolution No. 18773

Management Practices ( BMPs) to minimize human exposure to potential contaminants. Engineering controls and construction BMPs shall include, but not be limited to, the following: ( a) contractor employees working on -site shall be certified in OSHA' s 40- hour Hazardous Waste Operations and Emergency Response ( HAZWOPER) training; ( b) contractor shall stockpile soil during redevelopment activities to allow for proper characterization and evaluation of disposal options; ( c) contractor shall monitor area around construction site for fugitive vapor emissions with appropriate field screening instrumentation; ( d) contractor shall water/mist soil as it is being excavated and loaded onto transportation trucks; ( e) contractor shall place any stockpiled soil in areas shielded from prevailing winds; and ( f) contractor shall cover the bottom of excavated areas with sheeting when work is not being performed.

Toxic Assessment: A toxic assessment report shall be prepared and submitted as part of the building permit submittal. The applicant must demonstrate that hazardous materials do not exist on the site or that construction activities and the proposed use ofthis site are approved by: the City' s Fire and Environmental Protection Division ( FEPD); the State Department of Health Services; the Regional Water Quality Control Board; and any Federal agency with jurisdiction. No building permits shall be issued until each agency and/ or department with jurisdiction has released the site as clean or a site toxics mitigation plan has been approved.

With the implementation of the above City standard conditions of approval, the impacts related to the release of hazardous materials would be less than significant because contaminated soil and groundwater would be properly identified and off hauled to the appropriate disposal facilities by implementing a soil and groundwater management plan. ( Less than Significant Impact) Asbestos, Lead Based Paint, and PCBs
Based on the estimated age of the existing on -site buildings, ACM, lead -based paint, and PCBs, may be present in some building materials. Building demolition could result in the release ofthese materials to the environment. The project would be required to implement the below City standard conditions of approval.

City Standard Conditions of Approval:

COA HAZ-2.2: The project shall implement the following measures:

Hazardous Materials Contamination: To reduce the potential for construction workers and adjacent uses to encounter hazardous materials contamination from ACMs and lead -based paint, the following measures are to be included in the project:
a) In conformance with local, State, and Federal laws, an asbestos building survey and a lead -based paint survey shall be completed by a qualified professional to determine the presence of ACMs and/ or lead -based paint Terra Bella Public Storage & ALTA Housing Project 101 Initial Study City of Mountain View November 2022
Resolution No. 18773

on the structures proposed for demolition. The surveys shall be completed prior to demolition work beginning on the structures.
b) A registered asbestos abatement contractor shall be retained to remove and dispose of all potentially friable asbestos - containing materials, in accordance with the NESHAP guidelines, prior to building demolition that may disturb the materials. All construction activities shall be undertaken in accordance with Cal/ OSHA standards, contained in Title 8 of the California Code of Regulations ( CCR), Section 1529, to protect workers from exposure to asbestos. Materials containing more than one percent asbestos are also subject to BAAQMD regulations.

During demolition activities, all building materials containing lead -based paint shall be removed in accordance with Cal/ OSHA Lead in Construction Standard, Title 8, CCR 1532. 1, including employee training, employee air monitoring, and dust control. Any debris or soil containing lead -based paint or coatings shall be disposed of at landfills that meet acceptance criteria for the waste being disposed.

Building Demolition PCB Control: Nonwood- frame buildings constructed before 1981 that shall be completely demolished are required to conduct representative sampling of priority building materials that may contain PCBs.

If sample results of one or more priority building materials show PCBs concentrations greater than or equal to 50 ppm, the applicant is required to follow applicable Federal and State notification and abatement requirements prior to demolition of the building. Submit a completed " Polychlorinated Biphenyls (PCBs) Screening Assessment Applicant Package" with the building demolition plans for the project. A demolition permit shall not be issued until the completed " PCBs Screening Assessment Applicant Package" is submitted and approved by the City Fire and Environmental Protection Division (FEPD).

Applicants are required to comply with applicable Federal and State regulations regarding notification and abatement of PCBs -containing materials. Contact the City' s FEPD at 650- 903- 6378 to obtain a copy of the PCBs Screening Assessment Applicant Package" and related guidance and information.

With implementation of the above City standard conditions of approval, impacts from ACMs, lead based paint, and PCBs would be less than significant by identifying and properly removing these hazardous materials encountered during building demolition. ( Less than Significant Impact) Impact HAZ- 3: The project would not emit hazardous emissions or handle hazardous or acutely hazardous materials, substances, or waste within one -quarter mile of an existing or proposed school. (No Impact)
The nearest school is Crittenden Middle School, which is approximately 0. 5 - mile west ofthe project site. There are no existing or proposed schools within one quarter of a mile of the project site.

Terra Bella Public Storage & ALTA Housing Project 102 Initial Study City of Mountain View November 2022
Resolution No. 18773

Therefore, the project would not emit hazardous emissions within one quarter mile of a school. ( No Impact)
Impact HAZ- 4: The project would not be located on a site which is included on a list of hazardous materials sites compiled pursuant to Government Code Section 65962. 5 and, as a result, create a significant hazard to the public or the environment. ( No Impact)
As discussed in Section 4. 9. 1. 2 Existing Conditions, the project site is not on the Cortese List (i.e., the list of hazardous materials sites compiled pursuant to Government Code Section 65962. 5). ( No Impact)
Terra Bella Public Storage & ALTA Housing Project 103 Initial Study City of Mountain View November 2022
Resolution No. 18773

Impact HAZ- 5: The project would not be located within an airport land use plan or, where such a plan has not been adopted, within two miles of a public airport or public use airport. The project would not result in a safety hazard or excessive noise for people residing or working in the project area. ( Less than Significant Impact) Moffett Federal Airfield Comprehensive Land Use Plan
The ALUC reviews land uses within its AIA based on its established noise restriction area, height restriction area, and safety restriction area. As discussed in Section 4. 9. 1. 2, the project site is located approximately 1. 2 miles southwest of the Moffett Federal Airfield. It is within the Airfield' s AIA and FAR Part 77 Notification Surface Area. The project was presented to the ALUC on November 16, 2022 and received a determination of consistency with two conditions, which are identified below as conditions of approval.

Condition of Approval:

COA HAZ-5. 1: The project shall implement the following measures:

Building Height: All new buildings shall not exceed the height limit of 182 feet above mean sea level ( 146 feet above grade).

Avigation Easement: The proposed project shall process an avigation easement to notice future owners and occupants of buildings that there would be aviation activity around them.

The project' s impact to the height restriction area is discussed below and would comply with COA HAZ- 5. 1 Based on this discussion, the proposed development with the implementation of condition of approval COA HAZ- 5. 1 would not expose people to safety hazards or excessive noise from Airfield operations. ( Less than Significant Impact)
Federal Aviation Regulations Part 77
Based on the site location, any obstruction ( permanent or temporary) exceeding 146 feet above grade would require FAA review. The proposed maximum building height of 85 feet would not require notification and review by the FAA to determine potential aviation hazard. However, the project' s construction equipment ( i.e., cranes) has the potential to exceed 146 feet in height, which would be subject to FAA' s review. Compliance with FAA' s regulations would reduce aviation hazards to a less than significant level. ( Less than Significant Impact) Impact HAZ- 6: The project would not impair implementation of or physically interfere with an adopted emergency response plan or emergency evacuation plan. ( Less than Significant Impact)
The City' s Hazard Mitigation Plan outlines the City' s emergency response procedures in the event of natural disasters. The proposed development would not alter evacuation routes. The project would not result in closure, rerouting, or substantial alteration of streets or property access points during or after construction. Construction would primarily occur within the project site, with the exception of the construction activities required to install the crosswalks, curb ramps, and gutters at the intersection of Terra Bella Avenue and San Rafael Avenue. The design of the crosswalks, curb ramps, and gutters Terra Bella Public Storage & ALTA Housing Project 104 Initial Study City of Mountain View November 2022
Resolution No. 18773

would comply with the City' s design requirements and would not physically interfere with emergency response or evacuation. In addition, the project is not located in a flood zone, landslide, tsunami, and wildfire zones, and would be constructed in accordance with current building and fire codes to avoid unsafe building conditions. As discussed in Section 4. 19 Utilities and Service Systems, the project, along with the entire City, would be subject to mandatory conservation measures during dry and multiple dry years, and the prof ect would not hinder the City from providing sufficient water supply in normal, dry, and multiple dry year conditions. Therefore, the proposed project would be consistent with existing emergency response plans and emergency evacuation plans and would have a less than significant impact ( Less than Significant Impact)
Impact HAZ- 7: The project would not expose people or structures, either directly or indirectly, to a significant risk of loss, injury, or death involving wildland fires. ( No Impact)
The project site is located in a developed urban area. As discussed in Section 4. 9. 1. 2, the project site is not located in a fire hazard zone or the WUl. For these reasons, the project would not expose people or structures to wildland fires. ( No Impact)

4. 9. 3 Non- CEQA Effects
Per California Building Industry Association v. Bay Area Air Quality Management District, 62 Cal. 4th 369 ( BIA v. BAAQMD), effects ofthe environment on the project are not considered CEQA impacts. The following discussion is included for informational purposes only because the City of Mountain View has policies ( General Plan Policies PSA 3. 2 and INC 18. 1) that address existing hazardous materials conditions affecting a proposed project.

Vapor Intrusion
As discussed in Section 4. 9. 1. 2, both prcj ect site at 1020 and 1040 Terra Bella have elevated levels of soil vapor contamination exceeding the respective residential ESL for the proposed residential building and commercial ESL for the proposed storage facility Building 2. Future occupants of these developments, therefore, have the potential to be adversely affected by intrusion of contaminated soil vapor beneath the buildings. The project would be required to implement the City standard conditions of approval COA HAZ- 8. 1 described below to adequately address soil vapor intrusion.

City Standard Condition of Approval
COA HAZ- 8. 1: Remediation: The applicant shall work with City staff, the necessary oversight agency ( e. g., the U.S. Environmental Protection Agency, the State Department of Toxic Substances Control, State Regional Water Quality Control Board, County of Santa Clara Department of Environmental Health, etc.), and responsible parties, if necessary, to address any site remediation or building design/ construction requirements to ensure appropriate on -site improvements in accordance with the oversight agency standard practice; local, State, and Federal regulations; and City Code requirements. Design of remediation equipment, equipment placement, or remediation activities will need to be reviewed and may require approval by all parties. Prior to issuance of any building or fire permits, the applicant shall either:
a) submit written proof of an approval from the oversight agency of remediation Terra Bella Public Storage & ALTA Housing Project 105 Initial Study City of Mountain View November 2022
Resolution No. 18773

activity and/or building and site design as deemed consistent with the remediation activity; or ( b) provide written proof the work is not subject to approval from an oversight agency. A Certificate of Occupancy cannot be issued until final inspections have been completed by the City and the oversight agency, if required.

With implementation of the above City standard condition of approval, the health and safety of future occupants would be protected from soil vapor intrusion by requiring regulatory agency oversight to review the project, require any additional investigations, and implement vapor barrier design measures as necessary to prevent exposure of future occupants to contaminants in indoor air as a result of vapor intrusion.

Exposure during Construction Activities
As discussed above, the site contains known groundwater, soil, and soil vapor contamination and could expose construction workers to hazards during construction activities ( e. g., demolition, grading, and excavation). The project would be required to implement the City standard condition of approval COA HAZ- 8. 2, described below, to protect the health and safety of construction workers.

City Standard Condition of Approval
COA HAZ- 8. 2: Health And Safety Measures: The permittee/ contractor is responsible for preparing and implementing an appropriate health and safety plan to address the contamination and manage the operations in a safe manner and in compliance with the Cal/ OSHA Construction Safety Orders and other State and Federal requirements.

With implementation of the above City standard conditions of approval, the health and safety of construction workers would be protected by preparing and implementing a health and safety plan to establish appropriate management practices for handling impacted soil, soil vapor, and groundwater or other materials that may potentially be encountered during construction activities.

Terra Bella Public Storage & ALTA Housing Project 106 Initial Study City of Mountain View November 2022
Resolution No. 18773

4. 10 HYDROLOGY AND WATER QUALITY

4. 10. 1 Environmental Setting

4. 10. 1. 1 Regulatory Framework
Federal and State
The federal Clean Water Act and California' s Porter -Cologne Water Quality Control Act are the primary laws related to water quality in California. Regulations set forth by the EPA and the State Water Resources Control Board ( SWRCB) have been developed to fulfill the requirements of this legislation. EPA regulations include the NPDES permit program, which controls sources that discharge pollutants into the waters of the United States ( e. g., streams, lakes, bays, etc.). These regulations are implemented at the regional level by the RWQCBs. The project site is within the jurisdiction of the San Francisco Bay RWQCB.

Under Section 303( d) of the federal Clean Water Act, the SWRCB and RWQCBs are required to identify impaired surface water bodies that do not meet water quality standards and develop total maximum daily loads ( TMDLs) for contaminants of concern. The list ofthe state' s identified impaired surface water bodies, known as the " 303( d) list" can be found on the on the RWQCB' s website. ss National Flood Insurance Pro
The Federal Emergency Management Agency ( FEMA) established the National Flood Insurance Program ( NFIP) to reduce impacts of flooding on private and public properties. The program provides subsidized flood insurance to communities that comply with FEMA regulations protecting development in floodplains. As part of the program, FEMA publishes Flood Insurance Rate Maps FIRMS) that identify Special Flood Hazard Areas ( SFHAs). An SFHA is an area that would be inundated by the one -percent annual chance flood, which is also referred to as the base flood or 100- year flood.

Statewide Construction General Permit
The SWRCB has implemented an NPDES General Construction Permit for the State of California Construction General Permit). For projects disturbing one acre or more of soil, a Notice of Intent NOI) must be filed with the RWQCB by the project sponsor, and a Storm Water Pollution Prevention Plan ( SWPPP) must be prepared by a qualified professional prior to commencement of construction and filed with the RWQCB by the project sponsor. The Construction General Permit includes requirements for training, inspections, record keeping, and, for projects of certain risk levels, monitoring. The general purpose of the requirements is to minimize the discharge of pollutants and to protect beneficial uses and receiving waters from the adverse effects of construction -related storm water discharges.
ss San Francisco Regional Water Quality Control Board. " The 303( d) List of Impaired Water Bodies." Accessed July 5, 2022. hlWs:// www. waterboards. ca. gov/ sanfranciscobU/ water_ issues/ programs/ TMDLs/ 303dlist. html.

Terra Bella Public Storage & ALTA Housing Project 107 Initial Study City of Mountain View November 2022
Resolution No. 18773