address. A search within EnviroStor indicates that numerous hazardous waste facilities and sites are present within the Project’s region.
DTSC recommends that the following issues be evaluated in the Hazards and Hazardous Materials section of the MND:
1. A State of California environmental regulatory agency such as DTSC, a Regional Water Quality Control Board (RWQCB), or a local agency that meets the requirements of Health and Safety Code section 101480 should provide regulatory concurrence that project site is safe for construction and the proposed use.
2. The MND acknowledges the potential for historic or future activities on or near the Project site to result in the release of hazardous wastes/substances on the Project site. In instances in which releases have occurred or may occur, further studies should be carried out to delineate the nature and extent of the contamination, and the potential threat to public health and/or the environment should be evaluated. The MND should also identify the mechanism(s) to initiate any required investigation and/or remediation and the government agency who will be responsible for providing appropriate regulatory oversight.
3. Refiners in the United States started adding lead compounds to gasoline in the 1920s in order to boost octane levels and improve engine performance.
This practice did not officially end until 1992 when lead was banned as a fuel additive in California. Tailpipe emissions from automobiles using leaded gasoline contained lead and resulted in aerially deposited lead (ADL) being deposited in and along roadways throughout the state. ADL-contaminated soils still exist along roadsides and medians and can also be found underneath some existing road surfaces due to past construction activities. Due to the potential for ADL-contaminated soil, DTSC recommends collecting soil samples for lead analysis prior to performing any intrusive activities for the Project described in the MND.
4. If any projects initiated as part of the proposed Project require the importation of soil to backfill any excavated areas, proper sampling should be conducted to ensure that the imported soil is free of contamination. DTSC recommends the imported materials be characterized according to DTSC’s 2001 Information Advisory Clean Imported Fill Material.
5. If any sites included as part of the proposed Project have been used for agricultural, weed abatement or related activities, proper investigation for organochlorinated pesticides should be discussed in the MND. DTSC Mr. Edgar Maravilla
December 22, 2022
recommends the current and former agricultural lands be evaluated in accordance with DTSC’s 2008 Interim Guidance for Sampling Agricultural Properties (Third Revision).
DTSC appreciates the opportunity to comment on the MND. Should you choose DTSC to provide oversight for any environmental investigations, please visit DTSC’s Site Mitigation and Restoration Program page to apply for lead agency oversight. Additional information regarding voluntary agreements with DTSC can be found at DTSC’s Brownfield website.
If you have any questions, please contact me at (916) 255-3710 or via email at [email protected].
Sincerely,
Gavin McCreary, M.S.
Project Manager
Site Evaluation and Remediation Unit
Site Mitigation and Restoration Program
Department of Toxic Substances Control
cc: ( via email)
Governor’s Office of Planning and Research
State Clearinghouse
[email protected]
Mr. Dave Kereazis
Office of Planning & Environmental Analysis
Department of Toxic Substances Control
[email protected]
DRAFT MITIGATION MONITORING & REPORTING PROGRAM
Terra Bella Public Storage & ALTA Housing Project
Terra Bella Public Storage & ALTA Housing Project Draft Mitigation Monitoring and Reporting Program City of Mountain View Page 1 of 5 November 2022
Environmental Impacts Mitigation Measures Responsibility for Compliance
Method of Compliance and
Oversight of Implementation
Timing of
Compliance
Project-Specific Mitigation Measures
Air Quality Impacts
Impact AIR-1: The project
would not conflict with or
obstruct implementation of the
applicable air quality plan with
implementation of mitigation.
(Less than Significant Impact
with Mitigation
Incorporated)
Impact AIR-3: The project
would not expose sensitive
receptors to substantial
pollutant concentrations with
implementation of mitigation.
(Less than Significant Impact
with Mitigation
Incorporated)
Impact GHG-1: The project
would not generate GHG
emissions, either directly or
indirectly, that may have a
significant impact on the
environment with mitigation.
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 x
and PM, if feasible, otherwise,
a. If use of Tier 4 equipment is not
available, alternatively use equipment
that meets U.S. EPA emissi on
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 6 0
percent reduction in particulate matter
exhaust in comparison to uncontrolled
equipment; alternatively (or in
combination). Use of alternatively-
fueled equipment with lower NO x
emissions that meet the NO x and PM
reduction requirements above.
b. Use of e lectrical or non -diesel fueled
equipment.
Project applicant The mitigation measure shall
be printed on all construction
documents, contracts, and
project plans.
Oversight of implementation
by City of Mountain View
Chief Building Official and
Fire Marshall (or their
Designees).
Prior to issuance
of grading and
demolition permits
Exhibit C
Terra Bella Public Storage & ALTA Housing Project Draft Mitigation Monitoring and Reporting Program City of Mountain View Page 2 of 5 November 2022
Environmental Impacts Mitigation Measures Responsibility for Compliance
Method of Compliance and
Oversight of Implementation
Timing of
Compliance
(Less than Significant Impact
with Mitigation
Incorporated)
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 with
mitigation. (Less than
Significant Impact with
Mitigation Incorporated)
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 emissio ns 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 p hases 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.
Terra Bella Public Storage & ALTA Housing Project Draft Mitigation Monitoring and Reporting Program City of Mountain View Page 3 of 5 November 2022
Environmental Impacts Mitigation Measures Responsibility for Compliance
Method of Compliance and
Oversight of Implementation
Timing of
Compliance
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 with
implementation of mitigation.
(Less than Significant Impact
with Mitigation
Incorporated)
Impact TCR-1: The project
would not cause a substantial
adverse change in the
significance of a tribal cultural
resource that is listed or eligible
for listing in the California
Register of Historical
Resources, or in a local register
of historical resources as
defined in Public Resources
Code Section 5020.1(k) with
mitigation of mitigation. (Less
than Significant Impact with
Mitigation Incorporated)
Impact TCR-2: The project
would not cause a substantial
adverse change in the
significance of a tribal cultural
resource that is determined by
the lead agency, in its
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 s tandard
conditions of approval.
Project applicant
The mitigation measure shall
be printed on all construction
documents, contracts, and
project plans.
Oversight of implementation
by City of Mountain View
Community Development
Director (or the Director’s
Designees).
Prior to issuance
of grading permits
Terra Bella Public Storage & ALTA Housing Project Draft Mitigation Monitoring and Reporting Program City of Mountain View Page 4 of 5 November 2022
Environmental Impacts Mitigation Measures Responsibility for Compliance
Method of Compliance and
Oversight of Implementation
Timing of
Compliance
discretion and supported by
substantial evidence, to be
significant pursuant to criteria
set forth in subdivision (c) of
Public Resources Code Section
5024.1 with implementation of
mitigation. (Less than
Significant Impact with
Mitigation Incorporated)
Impact NOI-2: The project
would not result in generation
of excessive groundborne
vibration or groundborne noise
levels with implementation of
mitigation. (Less than
Significant Impact with
Mitigation Incorporated)
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 commer cial/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
Project applicant /
Project contractor
The mitigation measure shall
be printed on all construction
documents, contracts, and
project plans.
Oversight of implementation
by City of Mountain View
Community Development
Director (or their Designees).
Prior to issuance
of demolition and
grading permits
Terra Bella Public Storage & ALTA Housing Project Draft Mitigation Monitoring and Reporting Program City of Mountain View Page 5 of 5 November 2022
Environmental Impacts Mitigation Measures Responsibility for Compliance
Method of Compliance and
Oversight of Implementation
Timing of
Compliance
information of such person shall be clearly
posted on the construction site.