PPCC Library Integration Test

Cool Asphalt/Cool Streets Facts and Background
1. Day of 95+ degrees will increase 2-4 times by 2040, and include many poor
neighborhoods with low tree cover (Westlake, Pico-Union, Boyle Heights,
Sylmar, North Hollywood, Canoga, West Adams, South L.A.).
Greg Spotts <greg.spotts@lacity.org> wrote:
In selecting neighborhoods for possible urban cooling projects, we create heat maps
using the mapping tool below: https://web.tplgis.org/csc_losangeles/
We use two criteria: need for cooling, and equity.
Under these criteria, the places of greatest need tend to be the less affluent parts of
the San Fernando Valley.
The west side typically doesn’t score very high due to ocean breezes and high
incomes.
I do think it’s an interesting idea to explore installing cool pavement where the
farmers market is held, potentially making it more pleasant in the summer.
2. Street pavement must be in good condition for the coating to effectively seal it.
3. The City currently buys the coating from a private vendor. Whereas, the City
fabricates its own asphalt, which lowers costs.
4. A demonstration project was installed with a paved road/sidewalk section on
Marquerite St. and on 4400 Kraft St. in Studio City, at 3 locations in the San
Fernando Valley on 10 blocks (Canoga Park, Sun Valley and Pacoima), and a 2-
block stretch in South L.A., and in Playa Vista/ Westchester.
a. https://www.canyon-news.com/mayors-cool-streets-la-program-repaves-studio-
city/121069
b. https://streetsla.lacity.org/marquerite-street-cool-pavement
c. Installation in in Canoga Park:
Earlier this week, Councilman Bob Blumenfield launched the next phase of 'Cool
Pavement' in the West Valley. Soon this cooling technology will be applied to 25
more streets in Canoga Park, lined by 280 new trees, which will help lower the
heat island effect in the hottest area of our city.
Thanks to Keith Mozee and Greg Spotts from Streets LA, Commissioner Aura
Garcia from the Los Angeles Board of Public Works as well as our friends from
Climate Resolve for your partnership on this endeavor. Together we are using
infrastructure to help combat climate change.
5. The material is lighter, and reflects more sunlight and heat than dark asphalt.
6. The coating is most effective on streets with tree canopies, which further reduce
heat retention and urban warming.
7. Public Works Committee hearings:
Hearing 1: Apr. 14 Public Works Cmte, Streets LA Presentation - Next Phase Urban
Cooling
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Item begins 1:26: https://www.youtube.com/watch?v=gah9f0ZFePU
Hearing 2: Public Works Committee Meeting, Streets LA proposal to award cool
pavement contract to Creative Paving
Item begins 3:02: BPW_CoolPavementCoating_20210526 audio.m4a
8. No barite nor any extra-toxic ingredients are used in the coating.
Greg Spotts <greg.spotts@lacity.org> wrote:
The cool pavement coating we are currently using is GAF Streetbond which has
been used for more than a decade by the City of LA. Currently LAUSD uses it as a
coating for asphalt playgrounds in schools.
The safety data sheet is available at this link:
https://www.gaf.com/en-us/products/streetbond-sb120-pavement-
coatings/documents
Greg Spotts, M.P.P.
Assistant Director and Chief Sustainability Officer
StreetsLA | Department of Public Works | Bureau of Street Services
1149 S Broadway 4th Floor, Ste 400, Los Angeles, CA 90015
O (213) 847-3333
From: Chris Spitz
I believe "Guardtop" is the sealant manufacturer (the product that is being used in LA
and was also apparently used in Arizona): https://guardtop.com/coolseal-faq/.
I don't see info on ingredients other than water-based asphalt or if barite is used, ie,
if this is materially different from ingredients used in traditional asphalt. In Phoenix
the website says that this is "compatible" to traditional asphalt.
There are also spec sheets on the Guardtop website for "Cool Seal," which they say
meets LEED requirements: https://guardtop.com/products/specifications/
Findings and justifications:
1. The material is just as or more durable than regular asphalt/concrete material.
2. Retention of less heat reduces the urban heat island effects.
Jay Ross
Member/WLASNC representative, WRAC Mobility & Transportation Committee (MTC)
Member, West LA Sawtelle NC/Chair, WLASNC PLUM Cmtee
[See graphics on pp. 3-4, following]
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