HomeMy WebLinkAbout10022008 BSC Agenda Item 4
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September 26, 2008
Josie:
As we approach our next BSC meeting, I wanted to share a few thoughts on a different
"rules" approach to maintaining our tree canopy. (I also want to thank Debbie for all the
time she spent with me explaining the construction rules regarding setback, square
footage limits, etc).
My proposal differs in two ways from what we have been recently discussing:
1. Instead of requiring that owners/builders plant trees up to a particular canopy
standard during new home construction, I think we should stay with the concept
of replacing the trees they remove. (For "bare" lots, however, I do support the
idea of a minimum planting).
2. Rather than treating the lot as a homogeneous unit, I suggest we have two
replanting standards, one standard each for: (a) Replacing trees "in the path of
construction", whose removal cannot be practically avoided, and (b) Replacing
trees not in the path of construction.
When a builder has no choice but to remove a tree, no amount of "incentive" to retain
canopy is going to prevent the inevitable. I think we should reflect in our rules this
situation. However, when there is no good reason to remove a tree, the canopy
replacement requirement should be commensurately higher.
There has been concern expressed that people who own heavily treed lots might suffer
loss of value if it were too expensive to remove trees for new construction. I think we
could tailor the "path of construction" replacement rules to address this issue.
I know we have all put a lot of effort into developing our proposed revision to the tree
ordinance, and I feel we have good agreement on many of the proposed changes. Our
proposed rules close many of the loopholes that presently exist (e.g. they will prevent
planting swathes of 2" trees which get cut down or crowded out shortly thereafter).
However, we seem to be going around and around on the specifics of the canopy
replacement rule and that is blocking completion of our rules update.
If you can share these thoughts with the rest of the Commission I'd appreciate it.
Thanks,
Frank Griffin
r
Some Assumptions
1. Given the high cost of lots in West U, builders will almost invariably seek to build
the largest house possible on any given lot. Hence, it would be unrealistic to
anticipate anything less.
2. To maintain our West U canopy we need to plant as many new trees as possible
each year. Our main window of opportunity is during new construction. Whereas
we propose to require 6" minimum tree size for replacement, I wonder if 4"
would not generate more plantings and a higher success rate.
3. We can address the canopy maintenance goal through tree replanting without
having an explicit rule related to lot canopy.
4. The right-of-way at the front of each lot is by far the most desirable and secure
place to plant canopy, even more so than the front yard. Hence our rules should
perhaps require trees to be planted there.
II
Page 1 of 1
Josie Orosco
From: CN Koehl Urban Forestry [ckoehl@koehlurbanforestry.com]
Sent: Friday, August 22, 2008 4:55 PM
To: Josie Orosco
Cc: Debbie Scarcella
Subject: Existing canopy estimates
Josie,
I've looked at Google Earth in an attempt to calculate existing tree canopy. I have not been able to figure out how
to calculate the actual canopy ...it is more a best guess based on the aerial photo. All the photos are taken in the
winter so canopy of deciduous trees do not show up very well, I've done my best to find them. It looks like all
areas of the City west of Edloe were photographed on January 15, 2006 and all areas of the City east of Edloe
were photographed on January 19, 2008.
Here's my best guess for canopy coverage for West U and surrounding areas:
City of West U = 40-45%
Southampton area = 50-60%
City of Southside = 20-30%
City of Bellaire = 20-30%
Let me know if you need any additional information.
Thanks,
Craig
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Key Provision Current Proposed
• Protected trees During construction: 6-in.+ At all times:
Trees for which a permit is required for Otherwise--- ---4-in.+ (all Classes) and
removal or damage ---in/near street area: 6-in.+ ---Any tree planted as replacement
---anywhere: 12-in.+
• Trees allowed to be removed --Diseased, damaged, dead --Diseased, damaged, dead
Categories of trees which may be --Hazardous --Hazardous
removed or damaged (but only if --Low-value (Class IV) --Low Value (Class IV)
authorized by permit) --Unreasonably impeding use or structure --Unreasonably impeding proposed use
(existing or proposed) or structure
--Any tree, if minimum canopy standard
is maintained
--Stand Improvement/Suppression
• Heritage trees (No special provision) BSC approval required in/near street or
Class 1 or 11 trees, 24-in.+ rear and (Stronger justification needed
• Trees that must be replaced --Any tree that is not "Low Value", All, unless minimum canopy standard met
Trees which must be replaced, if Hazardous, Dead, Diseased, or dying
removed or damaged
• Replacement calculation Inch-for-inch, by diameter, but--- Canopy-for-canopy (sq.ft.) up to minimum
Number/size of trees required to be ---reduced by tree evaluations canopy standard
planted to replace trees removed or ---reduced if high-value trees (6-in.+)
damaged will remain Exception: Stem-for-stem to replace
hazardous, diseased, damaged, dead,
stand improvement/suppression (up to
minimum canopy standard).
• Replacement location 1 S • On the site or in adjacent street area 1 s: On the site or in adjacent street area
Where replacement trees must be 2nd: In reasonable proximity to site 2"d: In street area within 1,000 feet
planted, listed in order of preference 3'd: Through tree trust (in reasonable 3`d: Street-front/side yards within 1,000
proximity to site, within City limits) feet
4`h: Through tree trust refer City fund
• Replacement size, species ---2-in, sometimes 4-in. ---4-in. (but 2-in. if replacing hazardous,
Minimum size and species of replacement ---Class I or II mostly diseased, damaged, dead, suppressed)
trees ---Class I or II
• Permit types Two--- One-- "tree permit"
Basic types of permits that can ---building permit with "tree (Simple, no-cost option for minor permits)
authorize tree removal or damage disposition" conditions
---Tree permit"
• Tree evaluations 10 categories, 40 possible points Abolished (Class I or II trees that have
How trees are evaluated (the score is less than 25% canopy dieback count
used in the calculation for replacement toward min. canopy standard)
trees
• Minimum planting standard ---2 to 7 trees (depending on site size) Must meet minimum canopy standard.
Minimum tree requirement for each site ---Size 2-in.+ Alternative with BSC approval.
(triggered by major development) ---Class I or II (unless pre-existing) ---One per 1,500 sq. ft. of site area
---Size 6-in.+
---Class I or It
• Diversification of the Urban Forest Not addressed Requires diversification by genus
• Planting trees in street areas Allowed Strongly emphasized and in some cases
required
• Removing trees in street areas (No special provision) BSC approval required if 4-in.+ Class I or
II (Stronger justification needed)
• Canopy Definition (No definition; canopy not used) Formula:
Note: Critical Root Zone is similar (diameter of trunk in inches) squared
concept. x 3.14 = area of canopy in square feet
Note: Canopies of newly-planted trees
will be boosted, b set factors.
Page 1 of 1
Josie Orosco
From: Craig Koehl
Sent: Tuesday, July 15, 2008 1:07 PM
To: Debbie Scarcella
Cc: Josie Orosco
Subject: Canopy area potential for entire City
Debbie,
According to information provided from GIS the following canopy area potential is available for the City
as a whole:
Total City area ........................................................55,733,976 square feet
Total right of way area ..........................................12,406,315 square feet
Total approximate adjacent street yard area..9,604,200 square feet
Total approximate rear yard area ......................9,604,200 square feet
Right of way area contains approximately 25.8% of total City area
Adjacent street yard areas contains approximately 17% of total City area
Rear yard area contains approximately 17% of total City area
If we consider right of way area and adjacent street yard area the total area represents 42.8% of the
City's total area.
If we consider right of way area, adjacent street yard area, and rear yard area the total area represents
59.8% of the City's total area.
Please let me know if you have any questions or need any additional information.
Thanks,
Craig N. Koehl
Urban Forester
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• Page 1 of 3
Josie Orosco
From: Debbie Scarcella
Sent: Thursday, August 28, 2008 11:45 AM
To: Bryant Slimp; J. Denis Powers
Cc: Josie Orosco
Subject: FW: Question re urban forestry projects
This is from the lady who was at the last meeting re: tree ordinance provisions. If you like, we will
include her attachments in the packets for everyone. I don't know if she will have "time" to come and
speak at a meeting per her e-mail below.
From: Patnchris2@aol.com [mailto:Patnchris2@aol.com]
Sent: Thursday, August 28, 2008 10:35 AM
To: Debbie Scarcella
Subject: Fwd: Question re urban forestry projects
Debbie,
I am going to send to you some of the information I collected
while quickly researching urban forestry codes, particularly any
ongoing work on tree canopy protection. After I attended a
work group a few weeks ago, I had good intentions of turning
all my notes into a fancy memo and taking it to you. However,
I teach high school and now that school has begun, I can no
longer fool myself that I shall find the time for that.
I hope that you and the committee will find some of what I send
useful, even if it is only language that will help "sell" the
proposed regulation amendments to City Council and to the
citizens.
To that end, I begin by forwarding you this e-mail.
Best regards,
Pat Bell
2908 Lafayette St.
08/28/2008
• . Page 2 of 3
Houston, Tx 77005
From: hughes@charlottesville.org
To: Patnchris2@aol.com
Sent: 8/8/2008 6:44:04 A.M. Central Daylight Time
Subj: RE: Question re urban forestry projects
Hi Ms. Bell, Thanks for your note. We are still working on our Urban
Forest Management Plan and at present we are in the process of taking a
tee inventory of our Parks, Schools, public areas, and in the medians and
tree lawns along the thorofares. We are also going to get aerial photos of
the city with the foliage on the trees to help better calculate the percentage
of canopy cover that we have. The results of these will be added to the
results of our recent invasive plant study and its impact on our native forest
areas on public property and addressed in our management plan. At
present the codes that exist regarding trees are mainly in sections of the
zoning code that deal with development and site plan work. Our planning
folks deal with that and will often contact me for advice regarding tree
issues, but at present we don't have specific Urban Forest codes. We hope
to begin with some tree protection recommendations and BMP's in our
plan. In my research regarding Municipal Urban Forest standards and
management plans the obvious leaders in this are cities in California.
Virginia has yet to enact enabling legislation for cities that would make it
possible to have stricter codes regarding tree protection. The city of Palo
Alto California has a particularly thorough set of standards etc. I have
downloaded it to a file and would be glad to send it if you would like. I
didn't attach it because it's quite large. We have made some progress but
still have a long way to go. The most recent update to Charlottesville's
comprehensive plan back in '07 included a section on Urban forestry which
has gotten the ball rolling.
I'd be glad to talk with you further if it would be of assistance.
Tim Hughes
Urban Forester 434-970-3587
hughes.@ charlottesville,org
From: Patnchris2@aol.com [mailto:Patnchris2@aol.com]
Sent: Wednesday, August 06, 2008 9:19 AM
To: Hughes, Tim
Subject: Question re urban forestry projects
08/28/2008
• . Page 3 of 3
Hello from West University Place, Texas
Your website includes a nice summary of your work on
urban forestry. The summary that I located ends with a
note about a prospective 2007 report.
Our little Gulf Coast city has a Building and Standards
Commission that is considering Urban Forest Code
Amendments. We are attached to Rice University in
Houston (hence, "West University" and I am trying to
gather information about the thinking of other similarly
situated cities. I would be so grateful if I could learn about
the updates and progress and dialogue that your city has
experienced on this topic.
Is there any updated material that you could share with
me?
Sincerely,
Patricia Bell
patnchris2 @ aol.com
713.668.2344
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08/28/2008
Page 1 of 4
•
Josie Orosco
From: Debbie Scarcella
Sent: Thursday, August 28, 2008 11:48 AM
To: Craig Koehl; jim@JLDJR.com
Cc: Josie Orosco; Bryant Slimp
Subject: FW: Question re urban forestry projects
Jim and Craig-
Here is the info that Ms. Bell alluded to at the last BSC meeting regarding the tree ordinance
provisions. She sent an e-mail apologizing for not getting the into to us sooner and not compiling a
memo with the info. Sounds like she is teaching some high school courses and is now busy with that.
From: Patnchris2@aol.com [mailto:Patnchris2@aol.com]
Sent: Thursday, August 28, 2008 10:37 AM
To: Debbie Scarcella
Subject: Fwd: Question re urban forestry projects
Here's a link to the Palo Alto code.
From: hughes@charlottesville.org
To: Patnchris2@aol.com
Sent: 8/8/2008 2:00:14 P.M. Central Daylight Time
Subj: RE: Question re urban forestry projects
Hi Pat
I've attached the Palo Alto information and a few others from the file-
http://Www.municode.com/resources/gateway.asp?pid=12078&sid=46
The link above should take you to the City's municipal codes and I believe
Chapter 34 is where the zoning area is and that is where the only actual
codes we have are that may deal with trees. There is very little there- only
a little regarding development and site plans. I think the Palo Alto material
is well done. Good luck -hope some of this is helpful to your project- Tim
From: Patnchris2@aol.com [mailto:Patnchris2@aol.com]
Sent: Friday, August 08, 2008 1:50 PM
To: Hughes, Tim
Subject: Re: Question re urban forestry projects
Tim,
Thank you so much. Could you indeed send me the
08/28/2008
• + Page 2 of 4
California standards or a link to them? I spoke to our city
about this last night and they asked me to submit the data
that I had gathered. And, of course, I'm still gathering and
digesting. Our regulation writing is ongoing, and it will be
a challenge to push it through city council when the
proposed Chapter is ready. Citing California won't help
that any, but "stealing" some of their language without
attributing it to California might prove to be a useful
strategy.
I would like to cite anything ya'II have because
"Charlottesville" examples will play better here.
I certainly appreciate your help.
Regards,
Pat Bell
In a message dated 8/8/2008 6:44:04 A.M. Central
Daylight Time, hughes@charlottesville.org writes:
Hi Ms. Bell, Thanks for your note. We are still working on our Urban
Forest Management Plan and at present we are in the process of
taking a tee inventory of our Parks, Schools, public areas, and in the
medians and tree lawns along the thorofares. We are also going to
get aerial photos of the city with the foliage on the trees to help
better calculate the percentage of canopy cover that we have. The
results of these will be added to the results of our recent invasive
plant study and its impact on our native forest areas on public
property and addressed in our management plan. At present the
codes that exist regarding trees are mainly in sections of the zoning
code that deal with development and site plan work. Our planning
folks deal with that and will often contact me for advice regarding
tree issues, but at present we don't have specific Urban Forest
codes. We hope to begin with some tree protection
recommendations and BMP's in our plan. In my research regarding
Municipal Urban Forest standards and management plans the
obvious leaders in this are cities in California. Virginia has yet to
08/28/2008
0 0 Page 3 of 4
enact enabling legislation for cities that would make it possible to
have stricter codes regarding tree protection. The city of Palo Alto
California has a particularly thorough set of standards etc. I have
downloaded it to a file and would be glad to send it if you would like. I
didn't attach it because it's quite large. We have made some
progress but still have a long way to go. The most recent update to
Charlottesville's comprehensive plan back in '07 included a section
on Urban forestry which has gotten the ball rolling.
I'd be glad to talk with you further if it would be of assistance.
Tim Hughes
Urban Forester 434-970-3587
hughes @ charlottesville.org
From: Patnchris2@aol.com [mailto:Patnchris2@aol.com]
Sent: Wednesday, August 06, 2008 9:19 AM
To: Hughes, Tim
Subject: Question re urban forestry projects
Hello from West University Place, Texas
Your website includes a nice summary of your work
on urban forestry. The summary that I located ends
with a note about a prospective 2007 report.
Our little Gulf Coast city has a Building and
Standards Commission that is considering Urban
Forest Code Amendments. We are attached to Rice
University in Houston (hence, "West University" and I
am trying to gather information about the thinking of
other similarly situated cities. I would be so grateful if
I could learn about the updates and progress and
dialogue that your city has experienced on this topic.
Is there any updated material that you could share
with me?
08/28/2008
P
• Page 4 of 4
Sincerely,
Patricia Bell
patnchns2@_aol.com
713.668.2344
Looking for a car that's sporty, fun and fits in your budget? Read reviews. on AOL Autos.
Looking for a car that's sporty, fun and fits in your budget? Read reviews on AOL Autos.
is only a deal if it's where you want to go. Find your travel deal here..
08/28/2008