HomeMy WebLinkAbout1991-02-12-DAC-min.pdf DESIGN ADVISORY COMMITTEE
February 12 , 1991
Attending John Frey, Richard Bechtel, John Eddison, Albert Huang,
Barbara Hulsizer, Walter Pierce, John Vinton, Betsie
Whitman, Don Olson from the D.A C and Bob Ossman, L C C
representative Also in attendance were Myla Kabat-Zinn,
John Davies and Peter Kovner from the Lighting Options
Committee
1 Minutes of the meetings of 11/30/90 , 6/12/90 and
12/11/90 were approved
2 Myla Kabat-Zinn and members of the Lighting Options
Committee reviewed the various street lighting
alternatives and expressed their continuing concern
over the thrust of negotiations between the Town
Manager and Boston Edison Were alternatives to
HPS lamps going to be agressively pursued? etc
Technical data was reviewed lamp life of HPS lamps
is reported to be 4 to 5 years, of the Iwasake 2500
lumen compact fluorescent, 2 to 3 years; although it
was noted that the Town of Norwood's replacement
experience with HPS was 3 years , making the replacement
cost of the two lamp types more comparable
One third of Lexington' s street lamps are 1000 lumen
incandescent, which are targeted under Edison ' s plan,
for replacement first Shouldn't these be left alone
until a demonstration is made with the compact fluores-
cents?
Changing HPS also requires changing the fixture as well
as the lamp Then because of lower visual acuity of
HPS, tendency is to boost the lumens to compensate
Mr Olson questioned whether it wouldn ' t be more efficient
to use color-corrected lamps at lower lumens
At Lighting Committee ' s request, DAC members had observed
4000 and 2150 lumen HPS lamps on Vinebrook and Sherman
Streets, and generally had found it difficult to discern
differences in intensity or glare, possible due to
inadequate (or erratic) shielding, many instances of
spillage onto front yards , etc It was noted that fixtures
on Solomon Pierce Road have better cut-off
There was extended discussion expressing concern about
whether all options were going to be fully and objectively
pursued in negotiations with Edison
-2-
Jack Eddison assured everyone that the Town Manager ,
Rick White is still negotiating all options with
Boston Edison and that he has agreed to make use of
Paul Chernick ' s "rates" experience and that he (Eddison)
will pass along to the Town Manager and the Selectmen,
the Committees ' on-going concerns
After further discussion, Committee agreed to draft a
letter to the Selectmen summarizing these
Respectfully submitted,
Walter S Pierce
1