February 2013
FEATURES
PORTLAND
COMPREHENSIVE PLAN
New Institutional Zoning
(Continued from Page 3)
of their activities are allowed by right.
The intent is not just to make new
development on such campuses less
onerous, but to acknowledge that the
institution “has a right to be there,”
Cole said.
“Hopefully the process will still in-
clude meaningful input from neighbors,
and robust off-site impact mitigation
requirements,” Cole said.
Anton Vetterlein of the Homestead
Neighborhood Association, whose
boundaries include OHSU, isn’t so sure.
Since the university’s Marquam Hill
campus’s zoning was changed, Vet-
terlein said, “Our experience (with an
employment zone) is that the neigh-
borhood has less means to deal with
problems. There is mitigation, but they
either do the bare minimum or they fail
to anticipate problems.”
Specifically, OHSU’s latest master
plan calls for employees to avoid using
Southwest Terwilliger Boulevard to get
to work, but there is little enforcement,
he said.
The Collins View Neighborhood
Association has at times worked coop-
eratively with Lewis and Clark College,
but there have also been conflicts and
the last master plan process was “hor-
ribly contentious,” according to Collins
View’s Dixie Johnston.
Her husband Dave Johnston said
that so far, “We don’t know enough
about what’s being proposed to be con-
cerned,” and that minor tweaks would
be okay.
However, Dixie Johnston said that in
the past Lewis & Clark College hasn’t
shown enough concern about the wel-
fare and safety of their own students
and faculty, let alone those of their
neighbors, and she fears a lessening of
City requirements.
Dear EarthTalk: I’ve heard that
simply painting your roof white can
reduce household electricity bills by
40 percent. Is this something any of
us can do?
– Susan Pierson, Sumter, SC
Yes anyone can do it—and the ben-
efits can be significant, especially for
those in warmer climates who expend
a lot of energy keeping cool. But most
of the world’s roofs, including on some
90 percent of buildings in the U.S., are
dark-colored.
Dark colored roofs absorb more heat
from the sun’s rays than light colored
ones, and as such get much hotter. A
black roof exposed to full sun can in-
crease in temperature by as much as 90
°F (50 °C), meaning the air conditioning
inside has to work that much harder to
compensate for the added heat load.
But a white or reflective roof typically
increases temperatures only 10-25 °F
(5–14 °C) above ambient air tempera-
tures during the day. This translates
into a savings of up to 15 percent on
air conditioning energy use over a
year for a typical one-story residence,
according to the U.S. Department of
Energy (DOE).
The upshot of this energy savings
is not only cost savings for the con-
sumer—annual energy bill savings of
20-40 percent aren’t uncommon for
single story homes in America’s Sun
Belt—but also reduced air pollution and
greenhouse gas emissions generated in
The Southwest Portland Post • 7
the production of
electricity.
A white roof also
helps keep build-
ings and houses
without air condi-
tioning cooler in
the summer than
they would other-
wise be. And it also
helps mitigate the
“urban heat island
effect” whereby a
city can be 6-8 °F
warmer than its Some 90 percent of U.S. buildings have dark-colored roofs which,
surrounding areas when exposed to full sun can increase in temperature by as much
on warm summer as 90 °F. A white roof typically increases temperatures only 10-25
days.
°F above ambient air temperatures during the day. (Photo courtesy
The non-profit White Roof Project)
White Roof Project
promotes the concept across the U.S.
roofs may indeed provide more overall
and last year painted some 30 buildings,
environmental benefit for the cost of a
helping hundreds of families lower
couple of cans of special white paint.
their energy bills in the process.
Indeed, painting the roof white might
“A white roof project is low cost, easy
be the best energy efficiency improve-
to implement, relieves stress on the
ment you can make to your building
power grid, cuts down on smog, and
or house.
creates tangible change for individuals,
CONTACTS: White Roof Project,
our communities, and even globally,”
www.whiteroofproject.org; DOE Cool
reports the group, which is looking
Roof Fact Sheet, http://www1.eere.
to expand its work across the country
energy.gov/buildings/pdfs/cool_roof_
significantly in 2013 and expand inter-
fact_sheet.pdf.
nationally in 2014.
EarthTalk® is written and edited by
The White Roof Projects gives away
Roddy Scheer and Doug Moss and is a reg-
instructions (via a free downloadable
istered trademark of E - The Environmental
“DIY Packet”) to help do-it-yourselfers
Magazine (www.emagazine.com). Send
paint their own roofs white without
questions to: earthtalk@emagazine.com.
hiring a painter or roofer.
All it takes is a few painting supplies,
a couple of cans of highly reflective elas-
tomeric white paint, and a plan for how
to cover all relevant surfaces properly
and safely. Those who would rather
Multnomah Village.
hire someone to do the ladder climbing
1000 square feet above
and paint application can hire any local
painter or roofer.
7832 SW Capitol Hwy.
While green roofs may be preferable
from a strictly environmental perspec-
503-295-7889 or 503-880-1408.
tive in that they contain plants that filter
pollutants and reduce run-off, white
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