HomeMy WebLinkAboutTC Agd Pkt 2016-09-21 (2)Tiburon, September 20, 2016
LATE MAlL#J
1061EOdIE
SEP 2 0 2016
To: Mayor and Members of the Town Council
DIRECTOR OF PUBLIC WORKS
TOWN OF TIBURON
From: Eva Buxton - Botanist; Co-author of Open Space Resource Management
Plan (Open Space Management Plan); Conservation chair, California Native Plant
Society; the "concerned resident"
Subject: Open Space Management Update
Dear Members of the Town Council,
First, I want to commend the Dept. of Public Works for the thorough analyses and
presentation of alternatives in the management of vegetation on the Town's several
open space parcels.
As a botanist and resident of Tiburon, I have studied the flora on the Middle Ridge
for decades, including the distribution of three rare plant species that are listed
under the Federal and State Endangered Species Acts (Tiburon jewelflower,
Tiburon paintbrush, Marin dwarf flax). This site also supports large areas of native
serpentine grassland, a sensitive community, and other serpentine -endemic plants
(Tiburon buckwheat, marsh zigadene, serpentine hedgenettle, California melic
grass, et al.). Tiburon jewel flower is endemic to the Tiburon peninsula; it occurs
only on the Middle Ridge and on Old St. Hilary's preserve.
I have expressed my disappointment for many years over the fact that the Town
does not allocate sufficient funds to manage vegetation on its open space parcels. I
am mainly interested in the Middle Ridge, consisting of parcels 21, 23, 24, and 25,
the most valuable parcels with respect to botanical resources, but there are other
parcels such as parcel 15 (Atkinson) and parcel 2 (La Cresta) on Ring Mountain
that have received no — at least visible - vegetation management . These parcels
are overgrown with broom, non-native pine trees, and other weedy species that
should be controlled, as Ring Mountain is another area with serpentine plants,
including Tiburon mariposa, endemic to the mountain.
For FYs 2014-15 and 2015-16, $46,000/year were allocated for vegetation
management (from Measure A funds and the general fund). The staff report states
that the amount for FY 2016-17 is proposed to be $53,000 - an inadequate amount
to cover 250 acres of land in a suburban setting, where the invasion of non-native
species can easily threaten the native flora and - in the case of Tiburon - several
special -status species, including federally and State -listed species. In FY 2015-16,
$46,000 constituted 0.46 percent of the Town's operating budget and 0.32 percent
of the total budget (data provided by Heidi Bigall) - seemingly deplorable
percentages
I fully understand the necessity to clear fire prone vegetation along the
wildland/urban interface (WUI) near residences (priority #1, in the LSA plan), but
after six years, I wish the Town had also accomplished most of priority #2, i.e.,
reduce risk of wildfire, which includes removal of shrubby, non-native species on
the open space parcels. I have on many occasions, including this year, explained to
Town staff that French broom needs to be uprooted and disposed of at the right
time of the year, in order to reduce the stands and prevent regrowth (from the same
individual) in future years. For many years, the Town has opted to cut the broom
to ground level, resulting in vigorous regrowth in following years. With this
method, the shrubs can no longer be uprooted with a broom -wrench but instead
require being dug out of the ground with a pickax, a time-consuming, labor-
intensive task. (Broom -wrenches can only be used if there is 6-12 inches of the
trunk left in the ground.) I advised staff about this problem again this year, yet the
broom was cut rather than uprooted in the drainage near Gilmartin, as was Jubata
grass, which, instead of having the root ball "hacked out" of the ground, was also
just cut. Native rushes growing in the drainage were also cut, I assume, due to lack
of knowledge of what is native and non-native. — This past spring I supervised a
volunteer, who removed flowering French broom at an appropriate time, i.e.,
before seeds were released.
For three years, the Marin chapter of the California Native Plant Society has
funded a "professional weeder" — a botanist, highly qualified and experienced in
removing weeds in sensitive habitats supporting special -status species. (See
picture below.) (She has been insured by the California State Native Plant society
according to requirements put forth by the previous Town attorney.) I have been
told that because she is not a contractor, she cannot be employed by the Town. I
have specifically told Mr. Barnes that weeding among the rare plants is a delicate
job and cannot be performed by CCNB; CCNB must NOT be allowed in the
outcrops, where the trampling of the tiny seedlings (see picture below) is would be
highly likely. And there is no such thing as "overseeing the crew" from a
distance! I suggest that instead of spending funds on a consulting firm and CCNB,
the Town provide the necessary insurance for the weeder (Carissa Brands). Mr.
Barnes suggests that she may not do "an adequate job"; it's a fact that she is the
expert on weeding out non-native annual grasses on the Middle Ridge and she
knows every square meter, every colony of the Tiburon jewelflower and other rare
plants after 100's of hours of work over the course of three years. Whether the
task is going to take three or more years, needs to be assessed after monitoring the
sites at an appropriate time. If the Town would allocate funds to hire her, she
would gladly continue working on the Middle Ridge, costing the Town much less
than $80,000, the amount that was estimated by staff.
I am pleased that staff sees it as feasible within the present budget to have
vegetation management work split into two contracts, one in the spring and one in
the fall. However, even more efficient and money -saving would be to have PW
spend four hours a month — if not four, than three hours! — doing some vegetation
management, removing weeds when they should be removed due to their optimal
developmental stage for removal. Then, for ex., the plumes of Jubata grass that I
saw today (see picture below), containing tens of thousands of seeds, could be
removed NOW! That would save funds and manpower in the future. This
extremely invasive grass on the lower (and upper) portion of the Middle Ridge
(and elsewhere) was never removed last year (or previous years) (priority 2),
although that was supposedly one of the goals, and today they are in full bloom
spreading seeds that will eventually start new plants in the drainages upslope
within the sensitive serpentine grassland that support rare and endangered plants.
"Timing" is of the essence in weed removal!
As a sideline, I have, over the years, offered to take members of the POST
commission to the various parcels, including the Middle Ridge, and except for one
member, no one has responded or shown an interest in the condition of vegetation
on Town open space, the 0 and the S in POST! I thought the commission was a
liaison between the public and the Town of Tiburon. At my urging, a dog
licensing ordinance was put in place; however, without enforcement by the police
department or follow-up by the Commission, the Middle Ridge parcels are still
overrun by 100's of dogs per week, defecating and urinating, thus adversely
impacting the sensitive habitats.
It is disappointing that Town Public Works recommends no increase in funding for
vegetation management (Option 1 — status quo), and an increase of $7,000 dollars
(from $46,000 to 53,000) is going to make no difference in protecting habitats and
botanical resources on Tiburon open space. In six years since the adoption of the
Vegetation Management Plan by the Council, little progress has been achieved in
the overall "care of " natural resources, as funds go mainly toward fuel load
reduction -every -year ln-v-iew-o-f-the-above,—I urge the-members-of-the-Gounei1-to
allocate sufficient funds for Option 4 — Adding More Funding Specifically
Targeting Sensitive Species - for the Middle Ridge. It is desirable to fund all
priorities (1-9) on the Ridge due to their valuable botanical resources. (Again,
please note that the CCNB must not be hired to do weed removal in the outcrops!)
Option 2 — Increase in Overall Funding — should also apply to other parcels, most
importantly to the Atkinson and La Cresta parcels. I'm not aware of any
vegetation management on the remaining smaller, less valuable parcels.
In conclusion, I urge the Council to allocate sufficient funds for more extensive
vegetation management than in the past --- to manage for assets, i.e., native
vegetation, including special -status species, and not only for liabilities such as fuel
loads.
Thank you for the opportunity to comment on the Open Space Management Plan
update.
Sincerely,
Eva Buxton
evabuxton@sbcglobal.net
Below are pictures of interest:
Jubata grass (on lower portion of the Middle Ridge) in full bloom on Sept. 19,
ready to spread thousands of seeds into sensitive habitat upslope
jn t y 3 �..9 : t�..1.If
Carissa weeding in a steep serpentine outcrop on the Middle Ridge early in the
season
Tiburon jewelflower seedling (note the small size!) among non-native grasses
(weeds) in early March
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TOWN OF TIBURON
1505 Tiburon Boulevard
Tiburon, CA 94920
Town Council Meeting
September 21, 2016
Agenda Item:
STAFF REPORT
To:
From:
Subject:
Reviewed By:
Mayor and Members of the Town Council
Department of Public Works
Op Space Management Update
BACKGROUND
On November 17, 2010, the Tiburon Town Council adopted the Open Space Resource
Management Plan (the Plan), which outlines the Town's responsibilities and priorities for its open
space management activities. The highest priority identified in the Plan is the strategic reduction
of invasive species with the goal of reducing fire hazards on open space parcels. Other goals
include preserving native species and controlling/reducing non-native species and weeds.
In 2010, the cost of doing all the work included in the Plan was estimated at $450,000 to
$500,000. The plan notes these costs should "be revised once management activities are begun
and true costs are known and could be substantially higher". Based on the first four years of
work, staff estimates the cost of the plan to be approximately $600,000. The plan notes "these
costs are for one-time activities only. Necessary follow-up activities should be conducted three
times" with the cost of each follow-up activity costing up to 50% of the original work. Based on
this, staff estimates the total cost of the plan could range from $1.25M -$1.5M.
In fiscal year 2013 and prior years, the $25,000 budget for Open Space Management was
exhausted on fuel reduction tasks. The sole funding source was the Measure A fund, provided to
the Town by the County of Marin, to maintain, preserve and renovate existing parks, preserves
and recreational facilities.
With urging from proponents of the open space work, Council increased funding in FY2014 by
allocating General Funds. Expenditures in FY2014 and FY2015 were $39,536 and $35,238
respectively. Funding for the current fiscal year is $53,000. This represents about 4% of the total
cost of the plan. This may seem low, but as staff noted at the Council Retreat, the Town spends
under 3% per year of the total cost of the Storm Drain Master Plan on storm drain work. In
recognition of the funding constraints for this work, the various activities and projects included in
the Plan were prioritized, resulting in a list, which includes priority 1 through priority 9 activities.
For the purpose of this staff report, we are primarily focusing on priority 1 and priority 2
activities.
Priority 1 activities include:
TOWN OF TIBURON PAGE 1 OF 7
Town Council Meeting
September 2] ; 2016
• Fire safety activities, such as the removal of woody vegetation within 100 feet of
residential homes
• Imminent public safety work such as removal of a hazardous tree
• Removal of non-native species such as Pampas grass
Priority 2 Activities involve removal of non-native woody vegetation (e.g. French Broom) that is
colonizing the grasslands in the Middle Ridge Area.
Work done in 2011, 2012, 2013 and 2014 focused on fire fuel mitigation and removal of non-
native plant species in all of our open space parcels with emphasis on Priority 1 tasks. This
largely involved fuel reduction within 100 feet of homes. In 2015, the Town completed the initial
pass on Priority 1 work with about half the funding, while the remainder was used for continued
mitigation and `touch up' in the greater Middle Ridge and other 'hot spots'. Although the work
over the past 5 years has focused on priority 1 tasks, the Town has also performed some priority 2
tasks.
At this point most of the priority 1 work has been completed in all the parcels. One exception is
the removal of several pine trees in the Middle Ridge. As noted above, the Plan states that each ;
area must be revisited two to three times after the initial work and that the work should be
revisited one to three years after the initial work. Staff found this to be correct in that after the
first four years of work on invasive species and fire reduction, there is regrowth that needs to be
removed. While the first four years of work did have a positive effect on reducing fire loads and
invasive species, there is still much to be done.
In FY15/16 staff planned to repeat earlier Priority 1 work for fire prevention and intended to
remove pine trees in the Middle Ridge parcels categorized as _priority 1 and 2 in the Plan.
Subsequently, staff consulted with a resident of Tiburon with both a high level of interest, and a
professional background in this type of work, who expressed concern the Town was not getting to
lower priority work that would help protect special status species, such as the Jewel Flower, in
the Middle Ridge area. Concerns were also raised regarding the timing of the planned removal of
the pine trees during thespring while sensitive species were in bloom. We believe this was a
valid concern and decided.to delay the pine tree removal, but did complete other work as planned.
At the April 1, 2016 Council/Staff Retreat, staff updated Council on this issue, with Council
directing staff to bring a future agenda item to Council to review the Plans priorities and funding
for the Plan.
The Tradeoff of Sensitive Species Work and Fire Risk
Council asked specifically for a list of work being recommended by the concerned resident, and
the effect this might have on the ongoing work to reduce fire risk
The following is a list of tasks recommended by the resident:
1. Remove the pampas grass along the drainage, adjacent to Gilmartin Drive. (Priority 1)
2. Remove the French Broom up -hill from the intersection of lower fire road and
Gilmartin Drive and work down. (Priority 1)
3. Remove the pine trees on parcels 25 and 26. (Priority 1)
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4. Remove a patch of Harding grass adjacent to serpentine outcrop. (Priority 8)
5. Weed the serpentine outcrops. (Priority 2)
6. Remove the bamboo from parcel 26. (Priority 5)
During FY 2015/16 the Town completed the following tasks per the resident's request:
1. Removed pampas grass in the areas as requested. (Priority 1)
2. Removed French Broom in the area as requested. (Priority 1)
In addition, staff completed the following Priority 1 tasks:
1. Created a 10' fire break along Gilmartin Drive.
2. Removed most pampas grass on parcels 25 & 26.
3. Removed broom within 100' of homes on parcels 24, 25, 26 & 28.
Staff has met with Conservation Corps and has a proposal to remove pine trees in the Middle
Ridge parcels 23, 25 and 26 (priority 1 & 2). We would like to perform the removal this fall.
This is work that was planned for last Spring, but delayed after consultation with the concerned
resident as described above. We have notified the resident regarding our plans to remove these
trees, and as of this writing, have not received a response. As described below, work in sensitive
areas requires that we do the work properly, and additional costs and delays will be incurred if we
need to hire a biologist to be on site during the work.
Staff has not completed the following lower priority tasks from the list recommended by the
resident:
1. Remove a patch of Harding grass adjacent to serpentine outcrop. (Priority 8)
2. Weed the serpentine outcrops. (Priority 2)
3. Remove the bamboo from parcel 26 (Priority 5)
As requested by Council, staff also reached out to the Fire District to determine the additional fire
risk if we skipped one to three years of fire abatement work to concentrate on sensitive species.
Providing a quantitative assessment of the risk is difficult. The Fire District noted the following
regarding Priority 1 objectives:
1. There are still places that have broom and other pyrophytic and invasive species within
100' of residences. Skipping years is not a good idea as each year progress is not made
will result in even more fuel the next year.
2. The broom along the roadside of Gilmartin is better maintained for the first 5-10 feet, but
after that, it looks quite ominous. There are large patches of built up dead branches, with
broom growing over that. It has also grown into the fire road between Round Hill and
Gilmartin. This area deserves some attention.
3. Pampas Grass seems less compared to past years; focus should be on broom which seems
to be more prevalent.
4. Pines should be removed and the Fire District could assist with this as part of a training
exercise (Staff notes that some of these are in sensitive species areas where a Fire District
class may not be appropriate).
'11111•\ 111 "t'IRI h1 \ 1'a2J• 3 of
Town Council II'lmting
September 21. 2116
5. Fire roads grading will need to be done in the very near future. [Town staff notes that fire
roads were most recently graded in 2007].
OPTIONS
Staff believes that there are basically four options for approaching work in the open space:
1. Maintain the current priorities and funding
2. Increase overall funding
3. Change priorities, if only temporarily
4. Adding more funding specifically targeted for sensitive species protection
Each of these options has trade-offs as discussed below:
Option 1 -Maintain the Current Priorities and Funding
Staff is currently performing work in the open space using the priorities set forth in the Plan. The
majority of the work over the last five years has been Priority 1 with a little Priority 2 work. This ,
is not to say that work around special species ha§ been totally ignored. Although there are 21
different areas in the Plan, special species areas are predominantly in the North Middle Ridge
Area consisting of four parcels [parcels 21, 23, 24, and 25] and part of a fifth [northwestern
portion of parcel 26]. Each parcel in this area has priority 1 work generally removing broom,
Pampas grass and pines all of which are threatening special species. The Town has done work in
the Middle Ridge Area every year, while getting t� some other parcels outside of North Middle
Ridge only once during the same period.
Staff is proposing to approach the work slightly differently than during the first sweep of priority
1 work. We believe this approach will be more effective now that the first pass it complete.
Were staff to maintain the current Plan priorities, we would now go back to each area in
successive years, for a minimum of three years, expanding to new areas as work in the current
area was reduced and funds became available to expand to new areas. For instance, we would
conduct Priority 1 work in the North Middle Ridge for three consecutive years. As work in that
area decreased during those three years, we would expand into South Middle Ridge. Work in
consecutive years is better at reducing the reappearance of broom and other invasive species.
Second, beginning this FY 2016/17, staff would split the work into two contracts, one in the
spring and one in the fall. Current funding levels provide sufficient money to split the contract
and still get meaningful work done. Work in the spring would occur in areas where there are no
sensitive species before invasive species seed. Work in the fall would occur in areas where there
are sensitive species and after those sensitive species have seeded. For example, removing pine
trees in sensitive species areas.
The advantages to this approach are:
1. Fire reduction, particularly around residences continues to be a priority.
2. Work occurs first in the parcels containing special status species
3. Hitting three consecutive years will help rid the area of broom on a longer-term basis
TOWN 1)P TIuUUR0N Parc :1 of
I my f :ounril Meeting
Srll[r•Iuber 1 . 201 f
4. Work is split to allow activity in areas around sensitive species while still removing
broom before it seeds
The disadvantage of this approach is that it does not address lower priority work in special status
species areas as identified by the concerned resident.
Option -2 Increase Overall Funding
As noted above, the FY2106/17 budget includes $53,000 for open space vegetation management.
This is the highest level of funding since the Plan was adopted. Nonetheless, the concerned
resident has stated this level of funding is insufficient. Council could increase funding.
However, staff notes that although increasing funding without changing priorities would result in
the work described in Status Quo above being done quicker, it would not necessarily result in
lower priority work being done in the next several years.
The advantages of this approach are:
1. All the advantages of the Status Quo option above
2. Priority 1 and 2 work would get done more quickly
The disadvantages of this approach are:
1. Additional funding is used on the Plan that could be used for other Town priorities
2. This does not address lower priority work in special species areas in the near future
Option 3- Revise Priorities established in the Plan
Council could choose to change the priorities in the Plan, Appendix A. This could be done on a
permanent or temporary basis. Existing priorities could be shifted away from Priority 1 work
such as fire reduction to lower priority work.
Work in the areas with sensitive species is more expensive than work outside areas with sensitive
species. The Town is not required to work in the areas with sensitive species, or even to take
positive action to protect those species. However, if we do work in areas with sensitive species,
we must do it correctly to avoid any negative effect on those special status plants. The Town has
typically contracted with the CA Conservation Corps to do much of the work identified in the
Plan. However, it is likely staff from the Conservation Corps is not adequately trained to conduct
work in sensitive areas.
Given this, staff obtained a quote from environmental consulting firm, Prunuske Chatham, Inc.,
for a professional botanist to survey the biologically sensitive areas of Middle Ridge Open Space,
identify the areas in need of weeding, and train field personnel to perform the weeding and
monitor the crew while they weed. The estimated cost of the biologist work is $5,000 to $10,000.
Presuming the $10,000 cost for the botanist and 100 hours for a crew to weed, plus a day to train,
the annual cost for weeding in the serpentine area using Conservation Corps is $20,000 per year.
The concerned resident prefers we do not hire the Conservation Corps for this work, but rather,
recommends hiring a particular individual for the work. The individual is not a licensed
contractor, therefore, cannot be hired through a contract with the Town. The individual could be
TI \ TIM EON Pagr t.1
Town Council Meeting
September 21. 2016
hired as a paid Summer Intern working directly for the Town. There are risks associated with this
strategy, as we have no guarantees the weeding will be performed adequately, and in the event of
an accident, or injury, the Intern would be covered by the Town's insurance.
As noted in the Plan, work in any area needs to be repeated about three times. Therefore, to be
effective, we would want to weed the serpentine outcrops for three or four consecutive years.
The advantage to this approach is that lower priority work to preserve special status species
would be completed earlier.
Disadvantages of this approach are:
1. Money would be taken from fire abatement work, including cutting or removal of
pyrophytic and invasive species within 100 feet of residences.
2. As noted in the Plan, we need to repeat work in the high priority areas. Not going back to
high priority work now, and skipping three years while working in the serpentine area
would likely allow regrowth of invasive species in the high priority areas, undoing many
of the gains made to date.
Option 4- Adding More Funding Specifically Targeting Sensitive Species Protection
This option would keep the funding the same to high priority work while providing separate
funding for lower priority work in the special status species areas. Under this plan there would be
the same amount of funding for high priority work and there would also be funding for the special
status species work. Staff estimates this would cost about $20,000 per year for four years for a
total of $80,000.
The advantages of this approach are:
1. It would allow staff to continue work at the currently -funded level of $53,000 per year as
listed in the Status Quo option above.
2. It would also allow weeding in the serpentine rock areas around the sensitive species.
The disadvantages of this approach are:
1. Additional funding is used on the Plan that could be used for other priorities
2. Funding used would riot be in the order of previously established priorities and there is
still work to do on the higher priorities related to fire safety.
ANALYSIS
In writing this report, staff's goal has been to present Council an overview of the progress that
has been made since adoption of the Plan in 2010, and provide Council an opportunity to
consider any changes in either the priorities established in the Plan or how the work to address
these priorities is funded. Since 2010, town staff has planned and completed numerous projects
identified in the Plan while adhering to the following objectives.
1. Plan and complete projects identified as the highest priority in the Plan
Tow -A ur Page 6 of
Ttm n Con 11P11 19eelinh
S ptt iiiber?1. 2010
2. Complete these projects within the budget allocated for these purposes
At the same time, staff has consistently consulted, and worked closely with, residents interested
in the management of our open space areas. This has resulted in significant progress towards
addressing the many priorities identified in the Plan. In reviewing the priorities developed in the
Plan in preparation for this update, staff has concluded the priority list and associated rankings
are still valid and represent a reasonable approach to meet the goals articulated in the Plan.
Further, given the many competing needs for funding, and recognizing that the current level of
funding for this work is as high as it has ever been, staff recommends no change in the way this
work is currently being planned and conducted, essentially asking Council to adopt Option 1 as
described above.
RECOMMENDATION
Staff recommends the Town Council:
1. Hear any public comment on this item.
2. Review and discuss the Open Space Management Plan priorities and funding and
provide direction to staff.
Prepared by: Patrick Barnes, Town Engineer
Dmitriy Lashkevich, Associate Engineer
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Parcel I'D.
Open Space Parcel
Acreage
2
La Cresta Open Space Dedication
65.6
3
Cibrian Subdivision Open Space Area
3.8
4
Hexan Subdivision Open Space Area .
0.7
8
Mateo Drive Subdivision Open Space Dedication Areas
3.2
9
La Cresta Subdivision Open Space Path Dedication
0.1
15
Atkinson Open Space Bond Purchase
59.7
21
Miraflores Subdivision Open Space Area and Pathway
17.3
23
Del Madera Subdivision Open Space Area
18.7
24
Reed School District Open Space Bond Purchase Area
12.7
25
Hamon (Rock and Tree) Bond Purchase Open Space Area
10.7
26
Del Madera Subdivision Dedicated Open Space
10.7
27
Agins Subdivision Dedicated Open Space Area
0.5
28
Eavey Bond Purchase Open Space Area
20.7
29
Mount Tiburon Subdivision Dedicated Open Space Area
12.5
30
El Marinero Subdivision Dedicated Open Space Area
9.3
31
Hilarita Project Dedicated Open Space Area
2.8
33
"Reed Park" Town -owned Open Space Lots
1.5
37
Marinero Circle Park Area
0.7
48
Stevens Court Open Space Area Dedication
0.6
57
Meadowhill Subdivision Open Space Area Dedication
0.7
58
Straits View Drive to Spanish Trail Road Strip
0.1
LSA
15a
0
0.25 0.5
MILES
SOURCE: Aerial Imagery from the County of Marin
1JPROJECT PARCELS
FIGURE 1
Tiburon Open Space Management Plan
Overview
1:5TOT03011GIS1Maps\Vegetation MappinglFigurel Overviewmxd (11/23/2009)
LSA Associates, Inc.
TREATMENT AREAS AND TREATMENT RECOMMENDATIONS**
* Priorities: 1 is the highest priority and 9 is the lowest priority
** See Section 4 of the RMP for a list of management recommendations and descriptions of the open space parcels. See Section 3.1.3 for vegetation treatment protocols for fire safety.
*** See Section 3.6 of the RMP for explanation of the cost of the management activities. A = administrative cost of office staff; U = unknown cost.
P:1TOT0801\Tiburon RMP\Management Matrix 8 Final Draft.xls; 10/11/2010
A-1
General Open Space Management Considerations (All Parcels)
Techniques.
through July
a permit from
Use mechanized equipment in accessible areas and a crew on foot with hand tools on steep areas. Special -Status Plant Species. Avoid known locations of sensitive habitat or special status species. Nesting Birds. Avoid trees and dense brush from March
to prevent disturbing nesting birds. Native Grassland. Use treatment techniques to avoid damage to native grassland. Wetlands. Careful use of treatment techniques to avoid damage to wetland vegetation. Any application of herbicides in wetlands may require
the Regional Water Quality Control Board.
Parcel
Number
Open Space Area
Acres
Sensitive Resources
Suggested Vegetation
Management Goal
Management Recommentations
Priority*
Cost***
Considerations/Comments-and Guidelines
2
La Cresta Open Space
Dedication
65.6
Oak woodland;
Potentially occurring
special -status species;
Native grassland
Maintain oak woodland;
Increase native grassland
Remove the coyote brush and French Broom stands within 100 feet of
residences (mechanically cut & apply herbicide to stumps)
1
910
Remove broom in fall -winter to avoid trampling native
vegetation
Remove French and Scotch broom that are colonizing grassland (hand cut &
apply herbicide to stumps)
3
28,500
Remove broom in fall -winter to avoid trampling native
vegetation
Remove French broom along edge of oak woodland (hand or mechanically cut
& apply herbicide to stumps)
3
7'280
Protect native grassland; Remove broom in fall -winter to
avoid trampling native vegetation
Remove dead trees and track sudden oak death
9
U
Survey for and map special -status species
4
1,600
Oakland star -tulip potentially present
Remove thistles by hand
6
180
Few small stands
Remove stands of French broom and the associated pine, eucalyptus, and plum
(mechanically cut broom, hand cut trees, apply herbicide to stumps [except
pine])
6
69,160
Large broom infestations should be checked to prevent
spread
Install signage at open space access points requiring users to stay on existing
authorized fireroads or trails and dogs on leash
7
360
Consider enforcing Town's "dog on leash" ordinance
through the use of 1) periodic monitoring of open space and
issuance of citations to violators, and 2) a combination of
interpretive signage and fencing to discourage unleashed
dogs
Maintain trails and fire roads
8
360
3
Cibrian Subdivision
Open Space Area
3.8
Oak woodland;
Native grassland;
Oakland star tulip and
possibly other special-
status species
Maintain oak woodland;
Increase native grassland;
Reduce coyote brush;
Maintain Oakland star tulip habitat
Remove individual plants of French broom, Monterey pine, cotoneaster, from
coyote brush stands and any oak trees killed by SOD (hand removal & apply
herbicide to stumps)
6
2,625
When spraying herbicide, need to ensure that drift does not
land on native grasses and other non -target native plants
Remove stand of French broom (mechanically cut & apply herbicide to stumps)
9
400
Maintain purple needlegrass free of woody vegetation (coyote brush) and
invasive species (hand cut & apply herbicide to stumps)
3
750
Reduce density of coyote brush by a minimum of 50% thereby expanding native
grassland and Oakland star tulip habitat (mechanically cut, if not too steep &
apply herbicide to cut stumps)
7
1,601
Survey for and map special -status species
4
400
4
Hexan Subdivision
Open Space Area
0.7
Large oak tree;
Native grassland,
Oakland star tulip
Maintain large oak, native
grassland and habitat of Oakland
star tulip.
Remove French broom within 100 feet of residence (mechanically cut & apply
herbicide to stumps)
1
728
Mulch was probably installed by the adjacent landowners
Remove remaining French broom and Italian thistle (mechanically cut & apply
herbicide to stumps)
6
3,276
Maintain native grassland free of woody vegetation and invasive species
(mechanically cut & apply herbicide to stumps)
3
867
Prevent placement of additional mulch
8
A
Maintain mulch free of weeds. (apply herbicide)
8
150
* Priorities: 1 is the highest priority and 9 is the lowest priority
** See Section 4 of the RMP for a list of management recommendations and descriptions of the open space parcels. See Section 3.1.3 for vegetation treatment protocols for fire safety.
*** See Section 3.6 of the RMP for explanation of the cost of the management activities. A = administrative cost of office staff; U = unknown cost.
P:1TOT0801\Tiburon RMP\Management Matrix 8 Final Draft.xls; 10/11/2010
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LSA Associates, Inc.
Parcel
Number
Open Space Area
Acres
Sensitive Resources
Suggested Vegetation
Management Goal
Management Recommentations
Priority*
Cost***
Considerations/Comments and Guidelines
8
Mateo Drive Subdivision
Open Space Dedication
3.2
Watercourse;
Native grassland
Prepare site for oak woodland
mitigation plantings by removing
non-native species.
Remove French broom, cotoneaster, ornamental juniper, pride of Madeira and
other ornamental plants (hand cut & apply herbicide to stumps)
6
5,460
Much of area is steep; Avoid native grasses for vegetation
treatments
Remove non-native shrubs, including French broom along a 10 -foot wide band
beside Paradise Drive (mechanically cut & apply herbicide to cut stumps)
9
360
Repair eroding area above watercourse
8
720
9
La Cresta Subdivision
Open Space Path
Easement
0.1
None
Contain ornamentals to path area
Monitor to ensure that ornamentals do not spread into wildlands
9
45
15
Atkinson Open Space
Bond Purchase
59.7
Native grassland;
Wetlands;
Potential for Special-
status species
Maintain grassland and wetland
areas free of invasive species and
coyote brush.
Maintain existing California
sagebrush scrub and wetland;
Increase native grassland by
removing non-native species;
Monitor and Repair eroding banks
of watercourses and head cuts as
needed.
Remove Individuals of coyote brush and/or small areas of French broom,
Monterey pine, sweet fennel, Harding grass, Italian thistle, Myoporum, plum,
and Pampas grass from grassland or other areas (hand cut & apply herbicide to
stumps)
3
72,000
Remove Pampas grass (hand or backhoe & herbicide)
1
4,368
Remove stands of French broom and sweet fennel (hand cut & apply herbicide
to stumps)
5
7,280
Thin the coyote brush stands, especially those within 100 feet of the residences
on Turtle Rock Court (hand cut & apply herbicide to stumps)
3
437
Remove any colonizing coyote brush, coast live oak, California bay and other
species of trees from the California sagebrush scrub (hand cut & apply
herbicide to stumps)
7
750
Survey for and map special -status species
4
3,200
Install signage at open space access points requiring users to stay on existing
authorized fireroads or trails to minimize the creation of short-cut trails and/or
trampling of sensitive habitats
7
360
Consider enforcing Town's "dog on leash" ordinance
through the use of 1) periodic monitoring of open space and
issuance of citations to violators, and 2) a combination of
interpretive signage and fencing to indicate sensitive habitat
areas and discourage unleashed dogs
Monitor trail use and enforce Town of Tiburon regulation of "dogs on leash" and
"clean after your dog"
7
45
Repair erosion of watercourses and trails.
8
1,080
* Priorities: 1 is the highest priority and 9 is the lowest priority
** See Section 4 of the RMP for a list of management recommendations and descriptions of the open space parcels. See Section 3.1.3 for vegetation treatment protocols for fire safety.
*** See Section 3.6 of the RMP for explanation of the cost of the management activities. A = administrative cost of office staff; IJ = unknown cost. -
P:\TOT0801lTiburon RMP\Management Matrix 8 Final Draft.xls; 10/11/2010
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LSA Associates, Inc.
Parcel
Number
O en S ace Area
p p
Acres
Sensitive Resources
Suggested Vegetation*
Management Goal
Management Recommentations
Priority
Cost
Considerations/Comments and Guidelines
21
Miraflores Subdivision
Subdivision Open Space
Area and Pathway
(NMRMA)
17.3
Serpentine outcrop
along east edge
supporting Tiburon
jewelflower and Tiburon
buckwheat;
Potential for Marin
microblind harvestman;
Wetland;
Watercourse;
Native Grassland
Maintain habitat for rare plants;
Prevent spread of some noxious
weeds
Remove pride of Madeira (hand cut and apply herbicide to trunks)
5
360
Pride of Madeira occurs in south portion of parcel (between
Avenida Miraflores and Geldert Drive) (not mapped) and
along gully in southern portion.
Remove Pampas grass (hand cut with metal blade on weed whip & herbicide or
backhoe)
1
1,080
Pampas grass occurs in south portion of parcel (between
Avenida Miraflores and Geldert Drive) (not mapped) and
along gully in southern portion.
Remove all individuals of artichoke thistle with follow-up for several years (hand
removal)
2
360
An extremely invasive plant that is difficult to remove due to
its sharp spines
Weed serpentine outcrops of wild oats (hand removal)
2
360
Survey for and map special -status species
4
1,600
Remove black acacia, French broom, and other non-native species that are
growing within 100 feet of homes on Hacienda Drive, Avenida Miraflores, Mira
Flores Lane, and Rock Hill Drive (mechanically and hand cut & apply herbicide
to stumps)
3
1,165
Alert property owners of spread of acacia into open space
(last house on Hacienda Drive) and planted ornamental
grasses and pride of Madeira (last house on Avenida
Miraflores)
Remove pines and bull thistles (hand cut pines and hand removal of thistles)
5
1,602
Remove non-native woody vegetation that is colonizing grassland (hand cut &
apply herbicide)
2
32,760
Install signage at open space access points requiring users to stay on existing
authorized fire roads or trails to minimize the creation of short-cut trails and/or
trampling of sensitive habitats
4
360
Consider enforcing Town's "dog on leash" ordinance
through the use of 1) periodic monitoring of open space and
issuance of citations to violators, and 2) a combination of
interpretive signage and fencing to indicate sensitive habitat
areas and discourage unleashed dogs; Existing signs are
removed
Monitor trail use and enforce Town of Tiburon regulation of "dogs on leash" and
"clean after your dog"
4
45
Investigate "taking" of open space by adjacent property owner
7
A
Acacia and ornamental vegetation may have naturally
colonized adjacent open space
Remove French broom along east edge near fire road (mechanically cut & apply
herbicide to stumps)
2
437
Stand of broom is directly across from population of Tiburon
jewelflower
Thin coyote brush stands to 25% cover or less to prevent grasslands from
becoming scrub (mechanically cut & apply herbicide to stumps)
9
18,200
A few isolated and dense stands of coyote brush should
remain for wildlife cover
Remove rest of French broom (mechanically cut & apply herbicide to stumps)
6
6,188
23
Del Madera Subdivision
Homeowners Open
Space Area (NMRMA)
18.7authorized
Serpentine grassland;
Wetland;
Watercourse;
Special -status species
Maintain oak woodland and
serpentine grassland;
Protect habitat for special -status
species
Remove individuals or small colonies of Italian thistle (hand cut) and sweet
fennel (hand or mechanical removal & apply herbicide to stumps)
6
800
Special -status plant species occur onsite and should be
avoided.
Remove French broom and Pampas grass (hand removal & apply herbicide to
cut surfaces)
2
180
Coordinate with adjacent home owners for them to remove
French broom and Pampas grass from their back yards
Remove pines (hand cut)
1
720
Install signage at open space access points requiring users to stay on existing
fire roads or trails to minimize the creation of short-cut trails and/or
trampling of sensitive habitats
4
360
Consider enforcing Town's "dog on leash" ordinance
through the use of 1) periodic monitoring of open space and
issuance of citations to violators, and 2) a combination of
interpretive signage and fencing to indicate sensitive habitat
areas and discourage unleashed dogs
Monitor trail use and enforce Town of Tiburon regulation of "dogs on leash" and
"clean after your dog"
4
45
Survey for and map special -status species
4
2,000
Conduct general maintenance of the trails and fire roads to ensure that they are
clear of debris and erosion is minimized
8
720
* Priorities: 1 is the highest priority and 9 is the lowest priority
** See Section 4 of the RMP for a list of management recommendations and descriptions of the open space parcels. See Section 3.1.3 for vegetation treatment protocols for fire safety.
*** See Section 3.6 of the RMP for explanation of the cost of the management activities. A = administrative cost of office staff; U = unknown cost.
P:1TOT08011Tiburon RMP1Management Matrix 8 Final Draft.xls; 10/11/2010
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LSA Associates, Inc.
* Priorities: 1 is the highest priority and 9 is the lowest priority
** See Section 4 of the RMP for a list of management recommendations and descriptions of the open space parcels. See Section 3.1.3 for vegetation treatment protocols for fire safety.
*** See Section 3.6 of the RMP for explanation of the cost of the management activities. A = administrative cost of office staff; U = unknown cost.
P:ITOT08011Tiburon RMP1Management Matrix 8 Final Draft.xls; 10/11/2010
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Parcel
Number
24
Open Space Area
p p
Acres
12.7
•
Sensitive Resources
Suggested Vegetatio
Management Goal
Maintain serpentine grasslands;
Protect habitat for special -status
species
Management Recommentations
Priority*Cost
1
1,440
ConsiderationslComments and Guidelines
Reed School District
Open Space Bond
Purchase Area (NMRMA)
Serpentine grassland;
Serpentine outcrops;
Wetlands;
Watercourses;
Special -status plant
species
Remove all pine saplings/seedlings (hand cut)
Pine saplings along escarpment presently small
Remove thistles (hand cut)
2
360
Some thistles removed in 2008; follow-up needed
Remove French broom by back yards of homes on Gilmartin Drive
(mechanically cut & apply herbicide to stumps)
1
1,238
Entire stand should be removed
Survey for and remove Fr. broom and other woody species in grassland (hand
cut & apply herbicide to stumps)
2
16,500
Weed serpentine outcrops of wild oats (by hand)
2
720
Annual grasses outcompeting endangered plants; weeding
to be done by person(s) familiar with special -status plants
in area
Protect serpentine outcrops from trampling by people and dogs
4
A
Consider enforcing Town's "dog on leash" ordinance
through the use of 1) periodic monitoring of open space and
issuance of warnings or citations to violators, and 2) a
combination of interpretive signage and fencing to indicate
sensitive habitat areas and discourage unleashing dogs
Install signage at open space access points requiring users to stay on existing
authorized fire roads or trails to minimize the creation of short-cut trails and/or
trampling of sensitive habitats
4
360
Monitor trail use and enforce Town of Tiburon regulation of "dogs on leash" and
"clean after your dog"
4
45
Develop interpretive signs discussing the special -status species
4
320
Survey for and map special -status plant species
4
800
Conduct general maintenance of the trails and fire roads to ensure that they are
clear of debris and erosion is minimized
8
720
Populations of rare plants monitored periodically by Eva
Buxton for USFWS
25
Hamon (Rock and Tree)
Bond Purchase Open
Space Area (NMRMA)
10.7
Serpentine grassland;
Serpentine outcrops;
Wetlands;
Watercourses;
Special -status species;
Maintain and preserve serpentine
grassland/native grassland; protect
habitat for special -status plants;
enhance wetland
Remove French broom in vicinity of serpentine outcrops, including follow-up in
areas where broom was removed in 2008 (hand cut & apply herbicide to
stumps)
1
728
Necessary to prevent spread into sensitive habitat
Monitor trail use and enforce Town of Tiburon regulation of "dogs on leash" and
"clean after your dog"
4
45
Remove/reduce density of other infestations of broom (mechanically cut & apply
herbicide to stumps)
5
2,330
Weed portions of serpentine outcrops (escarpment) of wild oats (by hand)
2
360
Weeding needs to be done by person(s) familiar with
special -status species in area
Remove dead and live pines below escarpment and saplings near wetland
(hand cut)
2
3,349
Pines are converting habitat from serpentine grassland to a
non-native woodland
Remove bull thistle, purple star -thistle, and Italian thistle (by hand)
6
360
Bull thistle especially invasive in denuded areas where
broom/pampas grass removed in 2008; starthistle recent
invasion of parcel, especially near Hippie tree
Remove pride of Madeira on slope below "Hippie Tree" (hand cut)
5
180
Only a few plants present in 2009
Remove woody vegetation that is colonizing grassland except California
sagebrush (hand cut & apply herbicide to stumps)
5
7,500
Conduct general maintenance of the trails and fire roads to ensure that they are
clear of debris (garbage) and erosion is minimized
8
720
Thin coyote brush stands to 25% cover or less to prevent grasslands from
becoming scrub (mechanically cut & apply herbicide to stumps)
9
10,920
A few isolated and dense stands of coyote brush should
remain for wildlife cover
Remove Harding grass from wetland (by hand)
8
720
Survey for and map special -status species
4
800
Populations of rare plants monitored periodically by Eva
Buxton for USFWS and CDFG
* Priorities: 1 is the highest priority and 9 is the lowest priority
** See Section 4 of the RMP for a list of management recommendations and descriptions of the open space parcels. See Section 3.1.3 for vegetation treatment protocols for fire safety.
*** See Section 3.6 of the RMP for explanation of the cost of the management activities. A = administrative cost of office staff; U = unknown cost.
P:ITOT08011Tiburon RMP1Management Matrix 8 Final Draft.xls; 10/11/2010
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LSA Associates, Inc.
Parcel
Number
Open Space Area
Acres
Sensitive Resources
Suggested Vegetation
Management Goal
Management Recommentations
Priority*
Cost***
Considerations/Comments and Guidelines
26
Del Madera Subdivision
Dedicated Open Space
Area (NMRMA and
SRMRA)
10.7
Serpentine
grassland/native
grassland; serpentine
outcrops; wetlands;
watercourses; special -1
status plant species;
Maintain and preserve serpentine
grassland/native grassland; protect
habitat for special -status plants;
enhance wetland
Remove all pines/pine saplings near escarpment (hand cut)
1
2,160
Pines are converting habitat from serpentine grassland to a
non-native woodland
Remove all Pampas grass (mechanically cut & apply herbicide to base)
2,160
Stand in serpentine seep in eastern portion is especially
detrimental to native plants; large plants in wetland below
fireroad are "destroying" wetland and watercourse
Remove French broom from areas within 100 feet of homes. (mechanically cut
& apply herbicide to stumps)
1
364
Remove French broom from 10 -foot wide boarder along Gilmartin Drive
(mechanically cut & apply herbicide to stumps)
1
364
Remove French broom (mechanically cut & apply herbicide to stumps)
8
12'121
French broom must be monitored and seedlings removed
for it not to spread to serpentine grassland
Search for and remove individuals and small stands of French broom and other
species of woody vegetation that are colonizing grassland. (hand cut & apply
herbicide to stumps)
2
3,000
Monitor trail use and enforce Town of Tiburon regulation of "dogs on leash" and
"clean after your dog"
4
45
Remove pride of Madeira on Gilmartin Drive embankment (hand cut trunk)
5
360
This species is highly invasive and fast-growing
Monitor recurrence of and remove French broom in areas where removed in
2008 (hand cut & apply herbicide to stumps)
1
360
Follow-up for several years will be necessary
Remove Harding grass from stream channel west of Gilmartin Drive (hand
removal)
8
1,456
Remove sweet fennel (mechanically cut & apply herbicide to base) and Harding
grass (hand removal) in southern portion
8
1'019
This portion entirely vegetated by non-native species
Keep seeps/wetlands east of fireroad (near Gilmartin Drive) free of weeds,
including bullthistle
3
473
One small seep supports marsh zigadene (CNPS List 4)
Remove bamboo shoots (hand or mechanically cut & apply herbicide to stumps)
5
360
Bamboo removed in 2008 but underground stems are
resprouting
Survey for and map special -status species
4
400
Populations of rare plants monitored periodically by Eva
Buxton for USFWS and CDFG
27
Agins Subdivision
Dedicated Open Space
Area (Agins)
0.5
Native grassland;
Watercoruse
Maintain grassland and oak
woodland.
Remove French broom, sweet fennel, and pride of Madeira (hand or
mechanically cut & apply herbicide to stumps)
8
360
Coordinate with adjacent home owners for them to remove
French broom and Pampas grass from their back yards
28
Eavey Bond Purchase
Open Space Area
(Eavey) (SMRMA)
20.7
Native grassland;
Wetland;
Potential for special-
status species
Maintain wetland and woodland.
Increase native grassland.
Remove Pampas grass (hand cut & apply herbicide to base)
2
180
-
Grassland separates the French broom from the backyards
thereby reducing the priority for removal.
Coordinate with adjacent home owners for them to remove
invasive non-native species from their back yards that front
the Town's open space.
Maintain wetland and grassland areas free of French broom and other native
and non-native shrubs (hand or mechanically cut & apply herbicide to stumps
[uplands only])
6
18,928
Remove French broom from areas within 100 feet of homes (hand cut & apply
herbicide to stumps)
1
3,640
Remove French broom from areas within 100 feet of oak woodland and from
beneath canopy of oak woodland (hand cut & apply herbicide to stumps)
7
16,380
Create fuel breaks in the French broom (mechanically cut & apply herbicide to
stumps)
7
10,920
Conduct controlled burn of French broom areas.
7
18,000
Investigate "taking" of open space by adjacent property owners
5
A
Monitor sudden oak death. If dead trees are greater than 5 percent cover of oak
woodland, initiate removal of dead trees.
9
U
* Priorities: 1 is the highest priority and 9 is the lowest priority
** See Section 4 of the RMP for a list of management recommendations and descriptions of the open space parcels. See Section 3.1.3 for vegetation treatment protocols for fire safety.
*** See Section 3.6 of the RMP for explanation of the cost of the management activities. A = administrative cost of office staff; U = unknown cost.
P:1TOT0801\Tiburon RMP\Management Matrix 8 Final Draft.xls; 10/11/2010
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LSA Associates, Inc.
Parcel
Number
29
Open Space Area
Acres
12.5
Sensitive Resources
Suggested Vegetation
Management Goal
Maintain grassland and oak
woodland.
Management Recommentations
Priority*
5
Cost*"
4'514
Considerations/Comments and Guidelines
Mt Tiburon Subdivision
Dedicated Open Space
Area (Mt Tiburon)
Potential for purple
needlegrass grassland;
Maintain grassland free of woody species (hand cut & apply herbicide to
stumps)
Isolated nature of site reduces the priority
Monitor sudden oak death. If dead trees are greater than 5 percent cover of oak
woodland, initiate removal of dead trees.
9
45
The site is extremely steep and only needs monitoring at
this time.
30
El Marinero Subdivision
Dedicated Open Space
Area (El Marinero)
9.3
Potential for native
grassland
Maintain grassland and oak
woodland.
Monitor culvert and edge of road for erosion
8
45
The site is extremelysteepand onlyneeds monitoringat
this time.
Monitor for and remove refuse dumped along the road
8
90
Monitor sudden oak death. If dead trees are greater than 5 percent cover of oak
woodland, initiate removal of dead trees.
9
U
31
Hilarita Project
Dedicated Open Space
Area (Hilarita)
2.8
Wetland;
Native grassland
Maintain oak woodland and non-
native grassland.
Increase native grassland.
Remove pride of Madeira (hand cut & apply herbicide to cut trunk) and Pampas
grass (hand cut & apply herbicide to base or backhoe)
6
180
Grassland separates the French broom from the buildings
thereby reducing the priority for removal.
Portions of Hilarita are steep.
Remove individual plants of French broom, myoporum, cotoneaster, Italian
thistle, acacia, and other invasive species that are colonizing grassland and
wetland. Remove seedling and sapling eucalyptus and pine; large trees may
remain (hand or mechanically cut & apply herbicide to stumps)
3
3,000
Remove stands of French broom and non-native woody species within 100 feet
of buildings (hand or mechanically cut & apply herbicide to stumps)
3
720
Remove stands of French broom and acacia (hand or mechanically cut & apply
herbicide to stumps)
7
2,621
Remove non-native tall fescue and Harding grass from seep (by hand)
8
720
Monitor Himalayan blackberry and control if stands exceed 20 feet in diameter.
9
360
33
"Reed Park" Town-
owned Open Space Lots
(Reed Park)
1.5
Wetland;
Native grassland
Maintain native grassland and oak
woodland.
Increase native grassland.
Remove Individuals or small stands of French broom from grassland or areas
beneath oak woodland canopy (hand cut & apply herbicide to stumps)
7
360
Portions of Reed Park are steep
Remove stands of French broom (hand cut & apply herbicide to stumps)
7
2,002
Remove stands of French broom within or beside understory within 100 feet of
homes
1
2,075
Monitor Himalayan blackberry and control if stands exceed 20 feet in diameter.
9
360
37
Marinero Circle Park
(Marinero)
0.7
Wetland;
Native grassland; =
Potential for Special- •
status species
Maintain non-native grassland and
Increase native grassland.
Thin understory beneath Italian stone pine trees; clear limbs less than 3 inches
in diameter for 10 feet. .
1
360
The majority of Marinero is steep and inaccessible
Remove Pampas grass (hand cut & apply herbicide to base)
5
180
Remove Monterey pine, French broom, and sapling Italian stone pine and other
non-native species that are colonizing the grassland (hand cut & apply herbicide
to stumps [except pines])
6
874
Remove the large Italian stone pine (to 14 inches in dbh and 30 feet tall) that is
growing on the road cut (hand cut)
1
720
Survey for and map special -status species
6
400
48
Stevens Court Open
Space Dedication
Stevens
( )
0.6
None
Maintain oak woodland.
Monitor sudden oak death, if dead trees are greater than 5 percent cover of oak
woodland, initiate removal of dead trees.
9
U
Site is inaccessible because surrounded by dense oak
woodland.
Prioritles. 1 is the highest priority and 9 is the lowest priority
** See Section 4 of the RMP for a list of management recommendations and descriptions of the open space parcels. See Section 3.1.3 for vegetation treatment protocols for fire safety.
*** See Section 3.6 of the RMP for explanation of the cost of the management activities. A = administrative cost of office staff; U = unknown cost.
P:1TOT08011Tiburon RMP1Management Matrix 8 Final Draft.xls; 10!11/2010
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LSA Associates, Inc.
Parcel
Number
Open Space Area
Acres
Sensitive Resources
Suggested Vegetation
Management Goal
Management Recommentations
Priority`
Cost***
Considerations/Comments and Guidelines
57
Meadowhill Subdivision
Open Space Dedication
(Meadowhill)
0.7
Wetland;
Native grassland
Maintain non-native grassland and
oak woodland.
Increase native grassland.
Remove French broom, Myoporum, Pride of Madeira, and other non-native
shrubs from grassland (hand cut & apply herbicide to stumps)
9
473
Meadowhill is inaccessible except throu h adjacent
g 1
residential property
Remove the small Monterey pine trees. Removal of the larger Monterey pine
trees should occur if such removal will not damage the shorter coast live oak
trees. Remove stands of French broom (hand cut & apply herbicide to stumps
[except pines])
9
2,160
Investigate "taking" of open space by adjacent property owner
5
A
Remove the lower limbs of the coast live oak trees
9
360
58
Straits View Drive to
Spanish Trail Road Strip
0.1
None
Reduce spread of non-native
species.
Remove French broom, pride of Madeira, and Pampas grass (hand cut & apply
herbicide to stumps)
9
360
This is a very narrow strip of land with limited access and is
beneath a transmission line.
Monitor for and remove seedling and sapling eucalyptus (hand cut & apply
herbicide to stumps)
9
45
rnon les. .I is the nignest priority an y is the lowest priority
** See Section 4 of the RMP for a list of management recommendations and descriptions of the open space parcels. See Section 3.1.3 for vegetation treatment protocols for fire safety.
"* Cost is in dollars. See Section 3.6 of the RMP for explanation of the cost of the management activities. A = administrative cost of office staff; U = unknown cost.
451,181
P:1TOT08011Tiburon RMP\Management Matrix 8 Final Draft.xls; 10/11/2010
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