TERRA BELLA TDM PLAN
Alta Housing
2 PROPOSED TDM PLAN
TDM strategies work together to reduce single -occupancy vehicle (SOV) trips and parking demand by expanding mobility options to encourage residents and visitors to use of non -driving modes. This TDM Plan is presented to satisfy the Residential TDM Standards, as outlined in Section 3. 9. 2. of the East Whisman Precise Plan ( EWPP). Accordingly, it is organized as follows:
TMA Requirement —Asa new residential development of at least 100 units, the property will comply with the requirement to establish and maintain membership with the Mountain View Transportation TMA.
Site Plan Requirements — Site Design TDM strategies, as required and as proposed for the development.
TDM Plan Operational Requirements — Operational TDM strategies, as required and as proposed for the development
Parking Rationale — Demonstration of how the TDM Plan will ensure that the parking provided at Terra Bella will be sufficient to meet all the parking needs of the development.
TDM Monitoring & Results —A statement on commitment to comply with all monitoring and results related requirements.
Measures that are required for TDM Plan in the East Whisman Precise Plan are indicated via underlined text.
As a new residential development of at least 100 units, Terra Bella will comply with the requirement to establish and maintain membership with the Mountain View TMA.
Site Plan Strategies
Designated Carshare Parking
Guided by the EWPP, Alta Housing will maintain two spaces, in a highly visible location accessible to both building users and the general public, to remain available to residents who participate in peer - to -peer car -sharing, as an incentive for participation, on a " right of first refusal" basis. At times when one or both spaces are not claimed by car -share participants, these spaces will be made available as general, resident parking spaces.
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Bicycle Parking_
Per the EWPP, Alta Housing will provide ample, convenient, and secure bicycle parking to support and increase bicycling for transportation. Per the city' s parking standards', Alta Housing will allocate:
Table 2 Bicycle Parking Standards for Multifamily Housing ( EWPP, pg. 90) Short- term bicycle parking is for guests and will include inverted- U bicycle racks in well -lit and highly accessible locations near building entrances. Long- term bicycle parking will be secure to protect against theft. Bicycle lockers, enclosed cages or other restricted interior areas are typical types of long- term bicycle parking.
Collaborative Workspace
A business services room can help encourage and facilitate working from home, which can have a direct impact on reducing trips to and from the site. Such an amenity is a typical part of large residential buildings, though the size and specific services included vary. The workspace is likely to include a rentable work room that can be reserved, video conferencing equipment, high- speed internet connections, basic office supplies, and printing, scanning, and faxing services. For residents interested in using this workspace long term, dedicated mailboxes for businesses could be set aside and located nearby.
Site Design/ Pedestrian Oriented
The site will comply with the city' s pedestrian -oriented design standards. Alta Housing will construct the site with 7' city standard concrete sidewalks, flower gardens and thematic plantings, gathering areas, bollard lights along the sidewalk, and accent pavers to delineate the location of the bike plaza. The site will be landscaped to improve traffic safety.
Secure Storage
Delivery Service Partnerships
The property manager will partner with online personal service providers ( i. e., Instacart, Postmates, DoorDash, etc.) to facilitate efficient delivery, and space to hold deliveries, including a refrigerator for perishable deliveries. for residents to pick up. These partnerships reduce the need for a personal vehicle ownership and the frequency of one -stop trips. 9 City of Mountain View ( 2022). Parking and Loading. Retrieved from https:// Iibrary. municode. com/ ca/ mountain view/ codes/ code of ordinances? nodeld= PTIITHCO CH36ZO ARTXPALO DIV66IPAST
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Family TDM Amenities
Providing secure storage space for personal car seats, strollers, athletic or other extracurricular gear, and other large equipment can address challenges residents have while traveling. Moreover, Alta Housing will plan to locate the space near car share parking spaces to make it easier for families to travel without feeling a personal vehicle is necessary. If this measure is implemented without a dedicated employee, residents will be able to access the space with an access code or key card.
Operational TDM Strategies
Shared Bicycles and Resource Center
Loaner bicycles, helmets, and lights will be provided for resident use to facilitate non -driving access to neighborhood goods, services, and amenities. These bicycles will be provided as part of a bicycle resource center — dedicated space for residents to get information about bicycling and use shared tools for bicycle repairs and maintenance. A dedicated space contributes to social acceptance of bicycling and reduces maintenance costs, one key barrier associated with owning a bicycle.
Information Distribution
Marketing Materials, Promotional Events and Activities.
The TDM coordinator will oversee the active management of the TDM program through the distribution of marketing materials. Content will include a welcome packet detailing the TDM program, incentives, and upcoming events.
Mobility Concierge
The TDM coordinator will be a mobility concierge to residents and visitors. Beyond facilitating the abovementioned strategies, the TDM coordinator will share information about the nearest mobility services and liaise with residents to understand which strategies are the most effective and which strategies should be eliminated, revised, or added. The TDM coordinator will meet with residents at move -in to have one -on -conversations about the site' s mobility services, provide information about tax benefits, and talk through nearby transit options.
Sustainable Travel Pledge
A sustainable travel pledge is a commitment to sustainable modes of transportation site wide. This can take many forms including residents' and employees' signing that underscores their individual and household commitment to reducing their impact on the environment. Pledges can be a part of the site' s programming and an opportunity to bring people together around a common goal and initiative.
Safe Routes to School Promotion
As stated in the EWPP, the site needs to support Safe Routes to School programs ( SR2S). At Terra Bella, the Transportation Coordinator/ Property Manager will manage this requirement as part of their Nelson\ Nygaard Consulting Associates, Inc. 19
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role. The coordinator will promote SR2S by posting materials to analog and digital bulletin boards, notify families during move -in, coordinate a bicycle train and/ or walking school bus for families with school aged children, and be available to coordinate with residents to facilitate events at Terra Bella and in the broader neighborhood.
Monetary Incentives
Pre -Tax Transportation Benefits
The federal tax code includes tax- free transportation fringe benefits. For 2022, the monthly subsidy limit is $ 280 per month for transit and parking. The Terra Bella residential coordinator will publish information about the tax benefit in the welcome packet and on the site' s online web portal and further support residents through the process during one- on- one concierge services.
Unbundled Parking
Unbundled parking separates the cost of leasing a parking space from the cost of renting or purchasing a residential unit. Separating the cost of a parking space from the sale or lease of a housing unit saves money for households that do not wish to park a vehicle. This policy recognizes the cost of parking for residents and helps them determine if it is a worthwhile expense, as opposed to it being incorporated into the overall price of renting or buying a home regardless of whether the resident owns a vehicle.
Because the proposed development is Tax Credit funded, including the cost of the on -site parking, charging residents for the parking will be prohibited.
Free Loaner Bicycles
Loaner bicycles, helmets, and lights will be provided for resident use to facilitate non -driving access to neighborhood goods, services, and amenities. These bicycles will be provided as part of a bicycle resource center — dedicated space for residents to get information about bicycling and use shared tools for bicycle repairs and maintenance.
Free or Subsidized Public Bicycle and Scooter Share
When available in the City, the TDM coordinator will partner with public bicycle and scooter share providers to coordinate free or subsidized membership for all residents who use these services.
Public bicycle and scooter share parking shall be conveniently located near building entrances. Free or subsidized membership will also be provided to all residents who meet the eligibility criteria ( e. g., over 18 years). Loaner helmets will also be made available to all residents free of charge.
Additional Measures to Reduce Parking Needs
Peer to Peer Carshare
The TDM coordinator will facilitate the implementation of a peer -to -peer carshare program available to the residents of Terra Bella and neighboring sites, including Linda Vista. Residents will lead the program -- making decisions about whether carshare will be managed by resident liaisons or by a Nelson\ Nygaard Consulting Associates, Inc. 110
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third -party vendor, like Getaround or Turo. The peer -to -peer carshare strategy will take time to develop, but while there are gaps in the existing transit network, it will be a practical alternative transportation option.
Bike Trainings and Workshops
Organizing safety, repairs, maintenance, and other training sessions and workshops can increase bike ownership confidence and enthusiasm and generate a sense of connection within the biking community. The property owner/ TDM coordinator will coordinate with a resident liaison team and local CBOs to set up bike training workshops throughout a given year.
CSA or Farmers' Market Partnership
Partnering with local community -supported agriculture (CSA) organizations has the potential to reduce greenhouse gas emission and vehicle -trips by providing residents convenient access to locally sourced food, reducing the number of trips and vehicle miles traveled by both vendors and consumers. This measure could also have marketing benefits and reinforce the site' s overall message about sustainability. Program elements will include pickup and delivery accommodations, on -site markets, and discount and membership benefits. The TDM coordinator will seek to further coordinate with the city' s Supplemental Nutrition Assistance Program ( SNAP) to support residents and adjacent neighbors who need reliable access to affordable food source.
Note: This TDM plan is a living document that will be revised once the site is at full occupancy.
Residents must have ownership of their mobility plan, working with the TDM coordinator to facilitate conversations regarding which TDM strategies will best improve mobility and access to essential services. Moreover, TDM strategies are subject to change based on market fluctuations. For example, new consumer facing commuter -related services ( i. e., scooters, bike share, etc.) enter and exit the market with frequency. If strategies need to be swapped out, the TDM coordinator will work with residents and the broader Alta Housing team to identify replacements that to achieve an equivalent parking reduction. Furthermore, TDM items marked as " Required" will not be changed without written approval from the City of Mountainview Public Works Director or designee.
Parking Rationale
Parking Demand Analysis
Baseline Parking Demand Projection
The development is proposed as a residential -only property, to consist of a mix of the following housing -unit types:
Independent, Developmentally Disabled
Rapid Rehousing
Affordable Housing
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Parking demands for Rapid Housing and for independent, developmentally disabled units are based on comparable Alta Housing project. Parking demand for the remaining units was calculated using the parking analysis conducted by the City. These are outlined below, followed by the recommended parking supply.
Factoring for Hexagon Traffic Analysis Report Findings
City of Mountain View staff have provided a copy of the Transportation Analysis report, completed for the City by Hexagon Transportation Consultants, Inc. in August 2022. This report includes a section on Parking Supply, in which projections of parking demand for the proposed development are presented, based on findings from parking occupancy counts, completed at " similar sites in the region". The report states that these findings suggest that "... affordable housing developments have an average parking demand of 1. 36 spaces per unit..."(page 44). This, the report notes, suggests that a supply of 147 spaces should be provided for the proposed housing units.
The southbound left turn impact noted in the Hexagon report will be addressed through the trip - reduction effects of this proposed TDM plan. Since the property will be 100% residential in nature, and the TDM Plan is projected to reduce parking demand by 15%, this translates to 15% fewer vehicles making trips from the property to impact the intersection of concern here. This reduction in the number of resident vehicles making trips from the property will eliminate 2- 3 vehicles from the left turn lane. Thereby, not causing the anticipated impact. Further, there are several strategies that incentive non -driving modes, further contributing to less vehicle trips.
Recommended Ratios
The ratios developed from comparable Alta Housing properties are recommended as the best fit option for the I/ DD and Rapid Rehousing units. For the Affordable Units, the ratio developed based on the parking analysis in the Hexagon report — 1. 36 spaces per unit — is recommended. This combination of ratios results in a projected supply need of 123 spaces.
Table 3 Recommended Baseline Parking Demand Ratios
I/ DD 10 0. 85 9
Rapid Rehousing 27 0. 6 17
Affordable Units 71 1. 36 97
All Units 108 N/ A 123
Factoring For TDM
As the term " baseline" suggests, however, these projections are estimates based on parking -demand ratios that do not assume any intentional efforts to reduce resident parking demand rates, through site planning and design or operational/ programmatic TDM strategies. Therefore, to provide a more accurate projection of the parking needs for the proposed development, this section refines the above baseline projections, factoring for the strategies proposed in the TDM Plan outlined above.
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The strategies listed in the TDM Program include several well -researched and documented measures that can be anticipated to reduce residential parking demand from the baseline estimate outlined in the able above. The fact that many of these strategies are required for residential developments in the EWPP underscores the demonstrated effectiveness in reducing residents' reliance on personal auto travel and ownership. The proposed TDM Plan includes measures beyond those required in the EWPP, to ensure meaningful reduction in on -site parking needs, and to that will improve residents' access to and from key destinations by non -driving modes. The supply reduction that this will allow will also significantly reduce the cost of the overall development, allowing Alta Housing to reduce the cost of the critically needed housing units it will provide.
The proposed TDM Plan would reduce peak parking demand by at least 15%, and up to 40% -- reducing the estimated total demand identified in Table 3 above ( 123 spaces) to no more than 105 spaces, and to as low as 74 spaces Given the affordable -housing nature of the proposed project, we believe that the strategies in the TDM Plan will be more than sufficient in their effectiveness to ensure that resident parking demand can be accommodated via the proposed supply of 96 spaces. As such, Alta is requesting a concession from the City of Mountainview to approve the proposed supply of 96 spaces.
The section below outlines our methodology for estimating the effectiveness of the TDM Plan .
TDM Impact Analysis
Impact of Individual TDM Strategies
The most prominent and well -documented source for measuring the effectiveness of TDM strategies is a set of reports published by the California Air Pollution Control Officers Association ( CAPCOA).
Both its 2010 " Quantifying Greenhouse Gas Mitigation Measures" and 2021 " Handbook for Analyzing Greenhouse Gas Emission Reductions, Assessing Climate Vulnerabilities, and Advancing Health and Equity" compile extensive research and findings from an expansive literature review. These reports summarize research - based findings on demand - reduction impacts from an extensive list of common TDM measures, and detail assumptions and limitations of each measure. While this measure can be a good proxy for reducing trips for office and commercial land uses, it is much less reliable in projecting potential reductions in residential parking demand. 10 To address these limitations, Nelson\ Nygaard Consulting Associates conducted its own research into available literature on documented TDM effectiveness in reducing resident parking demand ( vehicle ownership rates). Published sources reviewed include San Francisco' s ' SF Shift' TDM program and efforts led by regional planning agencies including the Valley Transportation Authority' s VMT Calculator, and San Diego Association of Government' s Mobility Management Toolkit. These new 10 Handbook for Analyzing Greenhouse Gas Emission Reductions, Assessing Climate Vulnerabilities, and Advancing Health and Equity ( 2021). Retrieved from
https:// www. airquality. orci/ ClimateChancie/ Documents/ Handbook% 20Public% 20Draft 2021- Aug_ pdf Nelson\ Nygaard Consulting Associates, Inc. 113
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sources more accurately calculate demand reductions ( in terms of parking supply) expected from common TDM measures, specific to residential developments.
Table 4 TDM Strategies in the Proposed Terra Bella TDM Plan Low High
TMA Membership North Bayshore TDM Guidelines: Trip 1% 4% Reduction Marketing ( grouped, includes TMA,
website with real- time transit info, TDM
coordinator, sustainable incentives), 4%
On -Site Carshare Jain et al. ( 2021) - One in three households 2% 16% reduced car ownership, and most reductions
occurred in the year prior to joining car share.
Fleet - based car share members reported a
larger reduction in car ownership compared to
peer -to -peer car share members.
Cervero (2007) - 7 cars shed for every 100
carshare members; 24. 2% reduced vehicle
ownership by 1 or more; NET 3 cars are do
owners + non owners; but reduction still useful
for residential onsite
Klincevius ( 2014) - 40 to 60% of households
with membership are carless; increase of 20%
of members who were carless after joining; 9-
13 cars removed for every 1 shared car (those
who removed a car or gave up a car
Bicycle Parking CAPCOA: SDT- 7 Provide Bike Parking with 1% 4% Multi -Unit Residential Projects ( grouped with
LUT- 9 Improve Design of Development, 3-
21. 3%)
SF Shift: ACTIVE-2 Bike Parking, 14%
Collaborative Workspace CAPCOA: TRT- 6 Telecommuting and 1% 2% Alternative Work Schedules
Site Design/ Pedestrian CAPCOA: SDT- 1 Provide Pedestrian Network 1% 5% Oriented ( Required) Improvements, 0- 2% and LUT- 9, Improve Design of Development 3% - 21. 13%
Delivery -Supported SF Shift: DELIVERY- 1 Delivery Supportive 1% 2% Amenities Amenities, 1 %
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Family TDM Amenities SF Shift: FAMILY- 1 Family TDM Amenities, 1- 1% 2% 2%
Shared Bicycles and SF Shift: Tailored Transportation Marketing 1% 4% Resource Center
Bike Repair/ Wash SF Shift: ACTIVE- 5 Bike Repair 1% 1% Stations Station/ Maintenance Services, 1 %
Bike Trainings & SF Shift: Tailored Transportation Marketing, 1- 1% 4% Workshops 4%
San Jose / SANDAG: Community Based
Travel Planning, 0- 2%
TDM Coordinator/ Mobility San Jose / SANDAG: Community Based 1% 2% Concierge Travel Planning, 0- 2%
Informational/ Promotional CAPCOA: TRT-7 CTR Marketing 1% 4% Materials
SF Shift: INFO- 3 Tailored Transportation
Marketing
San Jose / SANDAG: Community Based
Travel Planning
Pre -Tax Transportation CAPCOA: TRT-4 Subsidized or Discounted 1% 1% Benefit Transit Program, 0. 3- 20%
Collective Effect of TDM Plan
The effect of the above measures, implemented together in accordance with the proposed TDM Plan, cannot accurately be projected by simply adding the low -end or high -end effectiveness measure of each strategy. Strategies work together to complement and amplify their effectiveness. A set of complementary TDM measures will be more effective than the sum of its strategies' estimated effectiveness. However, many TDM measures can also compete with each other, producing a collective effect when implemented together than their individual effectiveness estimates would suggest.
Our analysis addresses these factors by organizing TDM measures into functional categories and defining a limit on how much demand reduction should be estimated for measures within each — see table below.
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Table 5 TDM Functional Categories
Parking
These measures focus on pricing and other regulatory tools for o Management incentivizing alternatives to personal vehicle parking. 20 / o
Measures I
Program & + These measures include benefits and services that incentivize use of I Oro, Services non -driving travel options. "
These measures reflect urban design strategies to incentivize non - Physical driving modes, such as improvements to walking and cycling o
infrastructure, traffic calming measures, transit stop improvements, 10 / o Features
delivery lockers, key land - use complements, and other similar on -site and contextual factors
Promotions & These are measures that focus on increasing the awareness, appeal, 5% Activities and use of the TDM measures included in the other categories The caps on estimated effectiveness for each category of measures ensures against overestimating the impact of measures that are more competitive than complementary.
Calculated Reduction
As shown in the table below, applying the cap to these categories, and referencing the estimated range of demand -reduction impacts in Table 4, the proposed TDM Plan is projected to reduce parking demand by between 15% and 40%.
Table 6 Total and By -Category Parking Reduction Estimates cz:= I
1 - • . ..
Low High
Reduction from Parking Policy and Pricing 1% 1%
Reduction from Programs and Services 4% 24%
Reduction from Physical Features 7% 10%
Reduction from Promotional Resources and Activities 3% 5% Total Reduction 15% 40%
Comparing to Impacts on Trip Reduction
The analysis above is focused on TDM impacts on parking demand generated by the project.
Because the nature of the proposed property is 100% residential, reducing parking demand is achieved solely through TDM strategies that can be lined to reduced resident vehicle ownership rates. As such, our TDM analysis relied on several sources documenting the reduction effectiveness of the selected TDM measures, with limited reliance on CAPCOA as a source ( which focuses most consistently on VMT- reduction measures).
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While our analysis is focused on projecting reductions to the project' s parking demand, the fact that the calculated reduction of 15 - 40% equates to 15 - 40% fewer vehicles maintained on the property suggests that the TDM Plan should reduce trips and VMT by at least 15%.
It is critical to establish a system to monitor the performance of TDM strategies. By observing how travel behavior changes over time, Alta Housing will have the tools to determine the proper time to implement TDM measures, gauge their effectiveness, and make updates accordingly. The property owner, or tenant, shall prepare an annual TDM report one- year following building Occupancy, and submit it to the City' s TDM Coordinator as proven effectiveness of its TDM program. The City may assess the property owner a penalty for noncompliance with its TDM project conditions of approval.
The TDM report, prepared by an onsite TDM Coordinator, will include a survey of commute travel methods taken by all building occupants. Driveway traffic counts shall also be conducted during the peak periods by an independent, approved consultant and paid for by the property owner or tenant.
The driveway counts and resulting data shall be included in the TDM report to determine compliance with trip reduction goals and provided to the City' s TDM Coordinator.
The following metrics will be considered for the annual analysis:
Residential mode split ( all trips and all modes, including differentiating between driving along and carpool/ rideshare)
Parking utilization throughout the day
Vehicle ownership at the residential development
TDM program awareness
Participation in individual TDM programs
Cost- effectiveness of the TDM program
Resident survey of travel behavior
If Terra Bella' s parking is constrained and vehicle trips increase, Alta housing will submit a revised TDM Plan to the City that identifies new programs or strategies to meet requirements. Moreover, Alta Housing is prepared to pay a financial penalty for non- compliance.
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3 APPENDIX: SUMMARY OF
PARKING DATA FROM ALTA
HOUSING SITES
The following properties were used as comparable housing developments, with their measures of parking demand, relative to the number of Rapid Rehousing units, used to inform the parking - demand ratio used for those units in the TDM Plan' s parking analysis. All the units in both properties are Rapid Rehousing units, each with a population profile at both, in terms of developmental challenges, similar to that of the population who will occupy those units at Terra Bella.
Site 1: Eagle Park
This property consists of 67 units, including 62 studio apartments and five one -bedroom units.
Parking details:
Supply Ratio: 0.4 spaces/ unit
The number of on -site parking spaces: 27 Spaces including 2 for disabled persons & 2 for electric vehicle charging.
Demand Ratio: 0.4 spaces/ unit
Current Occupancy: 100%
Parking eligibility: Tenants are given one space per unit The property sometimes maintains a waitlist for parking, depending on the needs of our current residents.
Site 2: Fair Oaks Commons
This property consists of 67 units, including 61 studio apartments and six one -bedroom units.
Parking details:
Supply Ratio: 0.76 spaces/ unit
The number of on -site parking spaces: 51
Demand Ratio: 0. 5 spaces/ unit
Current Occupancy: 69% ( 35 vehicles for 51 spaces)
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ATTACHMENT A: DTSC COMMENT LETTER
Resolution No. 18773
r
Department of Toxic Substances Control
Meredith Williams, Ph. D.
Yana Garcia Director
Secretary for 8800 Cal Center Drive
Environmental Protection
Sacramento, California 95826- 3200
SENT VIA ELECTRONIC MAIL
December 22, 2022
Mr. Edgar Maravilla
City of Mountain View
500 Castrol Street, PO Box 7540
Mountain View, CA 9403907540
Edgar. Maravilla( o)_mountainview. gov
Gavin Newsom
Governor
MITIGATED NEGATIVE DECLARATION FOR TERRA BELLA PUBLIC STORAGE & ALTA HOUSING PROJECT — DATED NOVEMBER 2022 ( STATE CLEARINGHOUSE NUMBER: 2022110590)
Dear Mr. Maravilla:
The Department of Toxic Substances Control ( DTSC) received a Mitigated Negative Declaration ( MND) for the Terra Bella Public Storage & ALTA Housing Project (Project).
The Lead Agency is receiving this notice from DTSC because the Project includes one or more of the following: groundbreaking activities, work in close proximity to a roadway, importation of backfill soil, and/ or work on or in close proximity to an agricultural or former agricultural site.
The MND references the listing compiled in accordance with California Government Code Section 65962. 5, commonly known as the Cortese List. Not all sites impacted by hazardous waste or hazardous materials will be found on the Cortese List. DTSC recommends that the Hazards and Hazardous Materials section of the MND address actions to be taken for any sites impacted by hazardous waste or hazardous materials within the Project area, not just those found on the Cortese List. DTSC recommends consulting with other agencies that may provide oversight to hazardous waste facilities and sites in order to determine a comprehensive listing of all sites impacted by hazardous waste or hazardous materials within the Project area. DTSC hazardous waste facilities and sites with known or suspected contamination issues can be found on DTSC' s EnviroStor data management system. The EnviroStor Map feature can be used to locate hazardous waste facilities and sites for a county, city, or a specific Printed on Recycled Paper
Mr. Edgar Maravilla
December 22, 2022
Resolution No. 18773
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
Resolution No. 18773
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 Gavin. McCreary(a)dtsc.ca. gov.
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
State. Clearinghouse( o) opr. ca. gov
Mr. Dave Kereazis
Office of Planning & Environmental Analysis
Department of Toxic Substances Control
Dave. Kereazis( a-)_dtsc. ca. gov
Exhibit C
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C
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City of
Mountain View
DRAFT MITIGATION MONITORING & REPORTING PROGRAM
Terra Bella Public Storage & ALTA Housing Project
Environmental Impacts Mitigation Measures Responsibility for Method of Compliance and Timing of Compliance Oversight of Implementation Compliance
Project -Specific Mitigation Measures
Air Quality Impacts
Impact AIR-1: The project MM AIR- 1. 1: The project shall implement the project applicant The mitigation measure shall Prior to issuance would not conflict with or below measures to control diesel particulate matter be printed on all construction of grading and obstruct implementation of the emissions during construction. This list of measures documents, contracts, and demolition permits applicable air quality plan with
shall be incorporated into the approved building plan
project plans.
implementation of mitigation.
set.
Less than Significant Impact 1. All construction equipment lar er than 25 g Oversight of implementation with Mitigation horsepower used at the site for more than two by City of Mountain View Incorporated) continuous days or 20 hours total shall meet Chief Building Official and
U. S. EPA Tier 4 emission standards for NO,,
Fire Marshall ( or their
and PM iffeasible otherwise
Impact AIR- 3: The project a. If use of Tier 4 equipment is not Designees). would not expose sensitive available, alternatively use equipment receptors to substantial that meets U. S. EPA emission
pollutant concentrations with standards for Tier 3 engines and implementation of mitigation. include particulate matter emissions Less than Significant Impact control equivalent to CARB Level 3 with Mitigation verifiable diesel emission control
Incorporated) devices that altogether achieve a 60
percent reduction in particulate matter
exhaust in comparison to uncontrolled
Impact GHG- 1: The project equipment; alternatively ( or in would not generate GHG combination). Use of alternatively - emissions, either directly or fueled equipment with lower NO,, indirectly, that may have a
emissions that meet the NO,, and PM
significant impact on the reduction requirements above. environment with mitigation.
b. Use of electrical or non -diesel fueled
equipment.
Terra Bella Public Storage & ALTA Housing Project
City of Mountain View Page 1 of 5
Draft Mitigation Monitoring and Reporting Program
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 Alternatively,
Incorporated)
2. The applicant may develop another
construction operations plan demonstrating
Impact GHG- 2: The project that the construction equipment used on -site would not conflict with an would achieve a reduction in construction applicable plan, policy, or diesel particulate matter emissions by 60 regulation adopted for the percent or greater. Elements of the plan could purpose of reducing the include a combination of some of the emissions of GHGs with following measures:
mitigation. ( Less than
Implementation of No. 1 above to use
Significant Impact with
Tier 4 or alternatively fueled
Mitigation Incorporated)
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.
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Impact CUL-2: The project MM CUL- 2. 1: Prior to ground -disturbing activities, project applicant The mitigation measure shall Prior to issuance would not cause a substantial a qualified archaeologist shall provide cultural be printed on all construction of grading permits adverse change in the resources training to all contractors and employees documents, contracts, and significance of an
involved in trenching and excavation. The training
project plans.
archaeological resource
shall inform participants how to recognize
archaeological artifacts and deposits and discuss their pursuant to CEQA Guidelines obligations under the law and the project' s standard Oversight of implementation Section 15064. 5 with conditions of approval. by City of Mountain View implementation of mitigation.
Community Development
Less than Significant Impact
Director ( or the Director' s
with Mitigation
Designees).
Incorporated)
Impact TCR- I: 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
Terra Bella Public Storage & ALTA Housing Project
City of Mountain View Page 3 of 5
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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 MM NOI- 2. 1: The following measures shall be project applicant / The mitigation measure shall Prior to issuance would not result in generation implemented during construction to reduce vibration project contractor be printed on all construction of demolition and of excessive groundborne
levels to 0. 5 in/ sec PPV or less at adjacent
documents, contracts, and grading permits
vibration or groundborne noise
commercial/ industrial buildings south of the site.
project plans.
levels with implementation of
Place operating equipment on the
mitigation. ( Less than construction site as far as possible p from Oversight of implementation Significant gImpact p with vibration -sensitive receptors. by City of Mountain View Mitigation Incorporated) Use smaller vibratory rolling equipment, Community Development for example the Caterpillar model
Director ( or their Designees).
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
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information of such person shall be clearly
posted on the construction site.
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November 2022