CDocuments and SettingsSandy_HoDesktopwaxmyrtleaddfinal2.wpd

Shared by: gdf57j
Categories
Tags
-
Stats
views:
1
posted:
9/26/2011
language:
English
pages:
14
Document Sample
scope of work template
							Post-Burn Restoration Plan for Wax Myrtle Ravine

     (Addendum to 175 Acres Enhancement Plan
             for San Bruno Mountain)




                   Prepared for:

                 San Mateo County
           Environmental Services Agency
           Parks and Recreation Division




                   Prepared by

              Thomas Reid Associates



                   March, 2004
Post-Burn Restoration Plan for Wax Myrtle Ravine, San Bruno Mountain              March, 2004




List of Photos and Maps


Photo 1 Wax Myrtle Ravine Burn Area.

Photo 2 Gorse Infestation in Wax Myrtle Ravine, after the fire on July 8, 2003.

Photo 3 Headwaters of Wax Myrtle Ravine, before the fire on July 8, 2003.

Photo 4 Headwaters of Wax Myrtle Ravine, after the fire on July 8, 2003.

Photo 5 Old Ranch Road after Debris Removal by Fire Safe Crews.

Photo 6 Old Ranch Road and Erosion Problems Caused by In-sloped Road.



Map 1. Wax Myrtle Ravine Burn, San Bruno Mountain, July 8, 2003.

Map 2 Exotic Species, Wax Myrtle Ravine Burn Area, San Bruno Mountain.

Map 3 Wax Myrtle Ravine Burn, San Bruno Mountain. Planting and Hydroseeding Areas.

Map 4 Endangered Butterfly Habitat, Wax Myrtle Ravine, San Bruno Mountain.




Thomas Reid Associates
Post-Burn Restoration Plan for Wax Myrtle Ravine, San Bruno Mountain               March, 2004


Introduction

In 2001, San Mateo County Parks Division was awarded a grant from the California Coastal
Conservancy to conduct habitat restoration work, exotics control, and trail restoration work in a
175-acre area in San Bruno Mountain State and County Park. The 175-acre area is located
south of the park entrance on Guadalupe Canyon Parkway, and encompasses Dairy Ravine,
Cable Ravine, and Wax Myrtle Ravine. An Enhancement Plan for the area was completed in
November, 2002 (County of San Mateo). The plan includes goals, methodologies, and a time-
line for conducting exotics control and habitat restoration work within the 175-acre
enhancement area for the period 2002-2004.

Modification to the work scope for the 175-acre enhancement area has become necessary due
to the occurrence of a prescribed burn that turned into a wildfire on July 8, 2003 in Wax Myrtle
Ravine. A prescribed burn was identified as the only feasible way to remove eucalyptus slash
within the ravine that was left behind by a past logging operation in 1995 (Wax Myrtle Ravine
Restoration (Biomass Removal) Plan, 2002). Phase I of the prescribed burn intended to burn
a 4-acre area within the headwaters of the ravine, but escaped control lines and burned the
entire ravine, and additional slopes to the northeast (72.5 acres total), (Photo 1).




Photo 1. Wax Myrtle Ravine burn on San Bruno Mountain. The fire burned a total of 72.5
acres on July 8, 2003. View is looking northwest. The burn area extends from the Saddle
area of San Bruno Mountain down to the Brisbane Industrial Park. Photo date: July 15, 2003.

The portion of Wax Myrtle Ravine that is within the original 175-acre enhancement plan area is
approximately 10 acres. This amended restoration plan is focused upon restoring the area of
Wax Myrtle Ravine and adjacent slopes to the east that burned on July 8, 2003.

The fire burned over grassland, coastal scrub, eucalyptus forest, dense patches of gorse (Ulex
europaeus) and other invasive species. Photo 2 shows a gorse infestation in the ravine after
the burn. Both eucalyptus and gorse are highly invasive species, and if left untreated will return
and expand into new areas opened up by the fire. The 10-acre section within the original 175-
acre enhancement includes a 1.3-acre cut slope along Guadalupe Canyon Parkway (GCP).
This area is in need of intensive weed control and replanting to prevent the return of gorse,
eucalyptus, French broom (Genista monspessulana) and other weeds.



Thomas Reid Associates                           1
Post-Burn Restoration Plan for Wax Myrtle Ravine, San Bruno Mountain              March, 2004




Photo 2. Large stands of gorse within Wax Myrtle Ravine were burned by the fire.
Prior to the fire, the dense thickets of gorse and steep slopes inhibited restoration
crews from accessing the area. Photo date: September 15, 2003.

This restoration plan describes a work program for erosion control, weed control, debris
removal, and replanting and is intended to be used as a guidance document. Changes in the
implementation of the plan may be necessary to accommodate changes in the field (e.g. new
weed infestations, unforeseen erosion problems), and/or changes in the funding provided.
The implementation of this plan will be supervised by San Mateo County Parks Division.
Implementation will be carried out by San Mateo County Parks, Thomas Reid Associates (HCP
Habitat Manager), the Friends of San Bruno Mountain, San Bruno Mountain Watch, Brookfield
Homes and habitat restoration subcontractors (e.g. West Coast Wildlands and Shelterbelt
Builders).

A meeting to determine post-burn restoration objectives for Wax Myrtle Ravine was held on
August 12, 2003 in Brisbane, California. Minutes from the meeting are summarized in
Appendix A. In attendance were representatives from San Mateo County Parks, Thomas Reid
Associates, The Friends of San Bruno Mountain, San Bruno Mountain Watch, US Fish and
Wildlife Service, and members of the community. Input from the meeting was incorporated
into this plan. Participants in the meeting agreed that the highest priority for restoration work
was to control exotic species within Wax Myrtle Ravine while the opportunity exists.




Thomas Reid Associates                           2
Post-Burn Restoration Plan for Wax Myrtle Ravine, San Bruno Mountain                 March, 2004


Pre-Burn Conditions and Impact of Fire

Fire suppression and the lack of grazing over the last 40 years on San Bruno Mountain has
provided the necessary conditions for the expansion of coastal scrub vegetation and a
corresponding reduction in the amount of grassland. Within Wax Myrtle Ravine, which had not
burned since at least the 1950's, coastal scrub had expanded into grassland areas along with
infestations of gorse and eucalyptus.

From the 1980's to the present, the control of gorse and eucalyptus was done by HCP exotics
control crews, however this work was mainly done along the periphery of the infestations to
prevent them from spreading into sensitive butterfly habitat areas. Logging of eucalyptus trees
in the headwaters of the ravine in 1995 removed a large stand of eucalyptus trees, but left
behind large amounts of slash debris. The slash--in some places more than six feet deep--
and steep slopes of the ravine made restoration work unsafe and prohibitively expensive.

The Wax Myrtle Ravine fire burned through and opened up the slopes, including areas
covered by dense slash, gorse and coastal scrub vegetation. The fire has thus created an
opportunity to restore the native vegetation within the ravine, and control invasive species at
considerably less cost than what was possible beforehand. In addition, the burn has prepared
the soil for planting native vegetation by 1) creating a thin scorched layer of soil that is rich in
nutrients (and somewhat resistant to erosion), and 2) has burned off existing weeds, thatch
and seed to reduce competition from weeds.


Restoration Plan Goals

       1) Control exotic species infestations of gorse, eucalyptus and other species.

       2) Control erosion and sedimentation within and emanating from the burn area.

       3) Restore and create enhanced native habitats including habitat for the
          endangered Mission blue, Callippe silverspot and San Bruno elfin butterflies.

       4) Foster community involvement in restoring Wax Myrtle Ravine and develop a
          cooperative relationship between agencies, volunteer groups, and the
           community in meeting the goals above.


Restoration Tools and Techniques

Herbicide:             Backpack or truck mounted spray rig
Hand work:             Labor crews doing hand weeding and/or cutting, piling, and/or chipping.
Reseeding:             Hand broadcast or hydroseed native seeds and mulch.
Planting:              Planting of native plants (propagules), including butterfly host and nectar
                       plants in select habitat island locations
*Burning/Grazing:      Long-term maintenance to include periodic burning and/or grazing to
                       maintain grassland habitat. ( *Implementation of these techniques is not
                       a part of this plan due to funding limitations, but should be considered in
                       the future.)




Thomas Reid Associates                           3
Post-Burn Restoration Plan for Wax Myrtle Ravine, San Bruno Mountain              March, 2004


Land Ownership

This restoration plan focuses primarily upon the burn area that is owned by the County of San
Mateo. Approximately 60 acres of the burn area is owned by the County (HCP Management
Units 1-07 and 1-09), (Map 1). The remaining portion of land within the burn area, which is
approximately 15 acres, is owned by Foremost McKesson properties (HCP Management Unit
1-08). The County has begun discussions with Foremost McKesson to develop a restoration
plan for all of their properties (approximately 50 acres total). As required in the San Bruno
Mountain HCP, lands owned by Foremost McKesson are to be dedicated to San Mateo County
Parks.

Brookfield Homes is a former landowner of the lower easternmost slopes (known as parcel A1,
within Management unit 1-07-04). This parcel was dedicated to San Mateo County Parks in
1995. Brookfield Homes is carrying out restoration work within this parcel based on expected
requirements that will be established in the Callippe Amendment to the San Bruno Mountain
HCP (in preparation).


Goal 1: Exotic Species Control

The fire created opportunities for native plant re-establishment as well as for invasive species
colonization and expansion. Open grasslands and disturbed fire breaks are susceptible to
exotic infestations without thorough weed control.

There are a variety of exotic species within the burn area (Map 2). The most invasive include
Eucalyptus, gorse, French broom, Portuguese broom (Cytisus striatus), Himalaya blackberry
(Rubus discolor), and fennel (Foeniculum vulgare). Photos 3 and 4 show the headwaters of
the ravine which was dominated by regrowth of blue-gum eucalyptus before the burn. Exotic
species within the burn area were mapped in the fall of 2003. Acreage for each species is
shown below.

Major Exotic species                                 Acres
Eucalyptus trees                                     10.4
Eucalyptus regrowth (previously logged areas)         3.4
Gorse                                                 4.3
French broom                                          <1
Striatus broom                                         <1
Himalaya blackberry                                    <1




Thomas Reid Associates                           4
Post-Burn Restoration Plan for Wax Myrtle Ravine, San Bruno Mountain               March, 2004




Photo 3. The headwaters of Wax Myrtle Ravine, San Bruno Mountain on March
15, 2003 (before fire). The blue-ish vegetation in center of photo is eucalyptus
stump-sprouts.




Photo 4. The headwaters of Wax Myrtle Ravine, San Bruno Mountain on July 15,
2003, one week after the fire.


Thomas Reid Associates                           5
Post-Burn Restoration Plan for Wax Myrtle Ravine, San Bruno Mountain               March, 2004


Additional invasive species that can be expected to colonize or expand within the burn area
without treatment are listed below.

Common Name                   Scientific Name
Cotoneaster                   Cotoneaster sp.
pampas (Jubata) grass         Cortaderia jubata
Monterey pine                 Pinus radiata
Acacia                        Acacia sp.
fennel                        Foeniculum vulgare
Italian thistle               Carduus pycnocephala
bristly Ox-tongue             Picris echioides
*Bermuda buttercup            Oxalis Pes-caprea
poison hemlock                Conium maculatum
Cape ivy                      Delairea odorata
English ivy                   Hedera helix
Erodium/ Filaree              Erodium sp.
wild radish                   Raphanus sativus
mustard                       Brassica sp. /Hirschfeldia sp.
prickly lettuce               Lactuca sp.
sow thistle                   Sonchus sp.

Grasses
velvet grass                  Holcus lanatus
Ehrharta                      Ehrharta spp.

Hand and Herbicide control work on these weeds should be done prior to seed set. Control
work should consist of 1) an initial treatment, 2) a follow up treatment 4-6 weeks later, and 3) a
secondary follow up 3-6 months later.

Initial herbicide control work has already been conducted throughout the burn area on visible
re-sprouting species within and adjacent to the burn area. This work was done by West Coast
Wildlands, and funded through a re-allocation of funds within the HCP Habitat Management
budget. Species such as Himalaya blackberry, Ehrharta, fennel, striatus broom, gorse,
French broom, eucalyptus and other weeds received initial control to reduce the spread of
weed seeds into the burn area. Approximately $13,000 has been allocated within the HCP
budget to provide for this work. All herbicide work conducted under the direction of the HCP
Habitat Manager is consistent with San Mateo County’s Integrated Pest Management Policy.

San Bruno Mountain Watch (SBMW), through their subcontractor Shelterbelt Builders, Inc. has
committed to assisting the County in eradicating weeds within the burn area (SBMW, 2003).
As part of a Coastal Conservancy grant awarded to SBMW in 2001, SBMW has conducted
weed control on the south side of the ravine and along slopes within Devil’s Arroyo located to
the south of the burn area (SBMW typically only uses hand control or mowing methods, and
does not use herbicide for weed control). Flowering and seed stages of exotic plants are
continually being monitored for appropriate timing of treatment (personal communication Mike
Forbert, West Coast Wildlands: and Mark Heath, Shelterbelt Builders, Inc.).

Follow up exotics control throughout the burn area is planned for the spring of 2004, and three
exotics control treatments per year are recommended for the first two years (September 2003
to September 2005), (Table 1). After 2005, exotics control should continue on a schedule of at
least 1-2 time per year, as part of the general on-going habitat maintenance of the ravine.



Thomas Reid Associates                           6
Post-Burn Restoration Plan for Wax Myrtle Ravine, San Bruno Mountain           March, 2004




Brush and Tree Removal

Prior to the burn, a 1000-foot section along Old Ranch Road and Guadalupe Canyon Parkway
was cleared of eucalyptus slash, gorse and other vegetation by San Mateo County Fire Safe
crews to provide vehicle access and an upper burn control line for CDF fire crews. A lower
burn control line was installed by a CDF bulldozer crew.

Most of the areas burned over by the wildfire were thoroughly burned and reduced to ash,
however a few areas were left with patches of unburned vegetation. Patches of unburned
gorse along with burned woody debris along Guadalupe Canyon Parkway was cut and piled by
San Mateo County Fire Safe Crews in November, 2003. Removal and/or mulching of the
gorse debris is scheduled to be completed by Shelterbelt builders in early 2004. In the same
area, twenty eucalyptus and six cypress trees were removed along Guadalupe Canyon
Parkway on December 22, 2003 by County crews.

Due to the burn, and the brush control work that was conducted prior to and after the burn,
there has been a dramatic change in the appearance of Wax Myrtle Ravine. Once dominated
by virtually impenetrable stands of slash and noxious invasive weeds only two years ago,
(including eucalyptus, gorse, Himalaya blackberry, French broom, and Cape ivy), the entire
area has been opened up for native plant restoration.




Photo 5. Removal of dense piles of eucalyptus slash and gorse by County fire
safe crews has opened up Old Ranch Road for access by trail users and for
restoration of native plant species.



Thomas Reid Associates                           7
Post-Burn Restoration Plan for Wax Myrtle Ravine, San Bruno Mountain              March, 2004




Photo 5 shows a section of Old Ranch Road that was once covered by several cubic yards of
eucalyptus slash and gorse before County fire safe crews removed this material.

Dense brush within the base of the ravine is still present, and consists of Arroyo willow,
Himalaya blackberry, rushes, and sedges. A small grove of blue gum eucalyptus is located in
the base of the ravine, midway between the headwaters of the ravine and Brisbane Industrial
Park (Map 2). This grove should be removed if additional funding can be secured.


Goal 2: Erosion Control

Several areas were identified as potential risk for erosion within the burn area, and several on-
site meetings were held in the fall of 2003 between County Park staff, Friends of San Bruno
Mountain, TRA, California Department of Forestry and Fire Protection (CDF), City of Brisbane,
and the Natural Resources Conservation Service (NRCS). Eric McHuron, an engineering
geologist with the Friends of San Bruno Mountain, recommended putting in appropriate water
bars, removing berms created by bulldozers, and leaving most slopes to recover on their own
without introducing any non-native grasses through hydroseeding materials.

On August 22 County Park staff met with CDF staff to determine responsibilities for restoring
V-ditches, water bars and trails that were bulldozed during fire suppression activities. On
September 18, County Park staff met with City of Brisbane Public Works staff to determine
solutions to drainage problems along Guadalupe Canyon Parkway and adjacent to the
Brisbane Industrial Park (Guadalupe Municipal Improvement District). On October 7, County
Park staff met with the Natural Resource Conservation District to develop an appropriate
erosion control plan for the burn area (Appendix B: Richard Casale, NRCS, 10/20/03). CDF
Hydrologist Pete Cafferata also submitted recommendations for erosion control with the ravine
(Appendix C: CDF, 10/24/03).

Based on the recommendations of McHuron, Casale, and Cafferata, most areas of the burn
should recover without any erosion control measures. Exceptions exist where runoff is being
concentrated onto the slopes by culverts or V-ditches along Guadalupe Canyon Parkway and
Old Ranch Road. Old Ranch Road (fire road and trail) is an in-sloping road that channels
runoff creating rilling problems on the road and in the ravine (Photo 5). These erosion
problems were pre-existing, but could become worse after the burn due to the lack of
vegetation on the slopes. Based on this information, the City of Brisbane, CDF, and the
County took precautionary measures by installing erosion control barriers and cleaning out all
V-ditches prior to the winter rains. Erosion control implemented in 2003 included the following
work. Between October 15 and October 30, County Park crews cleared V-ditches filled with
sediment and replaced a culvert with rolling dip east of the upper Water Tank. On October 30,
CDF work crews completed two days of erosion control work on disturbed fire break areas
(including installation of water bars, removal of berms and spreading of vegetation on exposed
soils). The City of Brisbane Public Works has been clearing their debris basins more regularly
and has installed straw rolls on some of the lower burn slopes adjacent to the Industrial Park.
After winter storms this season, the City of Brisbane Public Works staff has observed more
sediment in the debris basin below the burn area than in previous years, but no significant
erosion or sedimentation has been observed (personal communication Matt Fabry).

Artificially steepened slopes are also potential erosion sites, and hydroseeding or hand
seeding grasses and hydroseeding mulch afterwards could provide erosion control benefits as


Thomas Reid Associates                           8
Post-Burn Restoration Plan for Wax Myrtle Ravine, San Bruno Mountain             March, 2004


well as increase the cover of native grass species (personal communication, Mark Heath).
While this work may not be necessary on a large scale within the burn area due to the natural
vegetative response that is occurring, the City of Brisbane and the County of San Mateo have
been exploring alternatives for funding and implementing hydroseeding work. A planting plan
for addressing erosion control concerns was prepared in January, 2004 by Casey Stewman
(Appendix D). Replanting areas are shown in Map 3.




Photo 6. Old Ranch Road (fire road/ trail) is in-sloped and this results in runoff
being channeled along the road, causing rilling on the road and on the slopes of
Wax Myrtle Ravine.


Goal 3: Restore Native Habitats

Map 3 shows generalized areas for replanting and hydroseeding. San Mateo County Parks
through coastal conservancy grant funding, and Thomas Reid Associates and the Friends of
San Bruno Mountain, partially funded through the Habitat Conservation Plan fund, will be
working together to prepare and replant areas in the headwaters of Wax Myrtle Ravine. $9,000
of HCP funds has been allocated for replanting in the first year. CDF has also committed to
provide crews to assist with replanting. Appendix D includes a replanting plan and plants to be
purchased.

Several hundred native bunchgrasses and shrubs will be planted on the steepest slopes where
unconsolidated soils are present. This will help reduce erosion from these areas, though some
erosion is likely to occur in the first year regardless of how much planting is done. Plant
communities to be restored are coastal prairie on the dryer and thinner soil areas, and northern
coastal scrub in the wetter and deeper soil areas. The Friends have grown several thousand
plants in their nursery, and have offered to conduct planting work within the headwaters of the


Thomas Reid Associates                           9
Post-Burn Restoration Plan for Wax Myrtle Ravine, San Bruno Mountain                 March, 2004


ravine to re-establish grassland, and on the point above Fern Rock to restore Sedum
spathulifolium (the host plant for the endangered San Bruno elfin butterfly) and other plants
that were disturbed by CDF crews during fire suppression efforts (personal communication Eric
McHuron and Doug Allshouse, August 2003).
Brookfield Homes will be funding the creation of planting islands and exotics control work
within the northeast section of the burn area, between the lower water tank and Silverspot
Drive (Map 1, parcel A-1). This work was planned prior to the burn event, however Brookfield
has agreed to do preliminary weed control work this winter/spring and possibly grass seeding
work to reduce re-establishment of exotic annual grasses on the site (personal communication
Kevin Frederickson, Brookfield Homes). The planting islands within parcel A-1 will be
designed to provide habitat for the endangered Callippe silverspot and Mission blue butterflies.
This project is being carried out by West Coast Wildlands and Shelterbelt Builders and
monitored by Thomas Reid Associates.

For all replanting areas, the first year is critical for survival, and the plants should be monitored
and provided with the following if necessary: 1) supplemental watering. 2) protection from snail
or small herbivore predation, and 3) hand weeding to reduce weed competition.

Butterfly Habitat

Part of the goal of restoration work is to restore native plant species, including the creation of
habitat islands for the endangered butterflies found on San Bruno Mountain. Existing habitat
for the endangered butterflies is shown in Map 4. Habitat for all three endangered butterflies;
the San Bruno elfin, Mission blue, and Callippe silverspot is found within the ravine. Moist
grassland on the north facing side of the ravine provides suitable habitat for the San Bruno
elfin butterfly, while the Mission blue and Callippe silverspot are predominately found on the
south facing dryer grasslands. Rocky outcrops with relatively thin soils tend to provide the
most suitable habitat for the butterflies. The burn has provided an opportunity to reclaim some
of the butterflies’ grassland habitat that had been overtaken by coastal scrub, gorse, fennel,
and eucalyptus trees over the past 40 years.

Monitoring

Several photo points have been established within the burn area by West Coast Wildlands and
Thomas Reid Associates. These monitoring points will be revisited every two to three months
for the next 3 years to track the success of the restoration work within the burn area. West
Coast Wildlands has been collecting photo point data every month at three locations.

For all habitat island areas, butterfly host and nectar plants should be counted after
installation. These should be re-counted on an annual basis to calculate percent survival.
Areas that have a lower than 15% survival after one year, are not likely to be good areas to
support butterfly habitat, (typical survival rates for lupines are approximately 20 - 50% in areas
that successfully provide Mission blue habitat, Shelterbelt Builders, San Bruno Mountain
Habitat Island Annual Reports (2001, 2002)).

If additional funding is secured, monitoring how the vegetation responds after fire over time
could be done using permanent staked 3 meter quadrats within randomly selected areas.
Plant percent cover data could be taken on plant species every spring (April).




Thomas Reid Associates                           10
Post-Burn Restoration Plan for Wax Myrtle Ravine, San Bruno Mountain                  March, 2004


Goal 4: Fostering Community Involvement and Cooperation

To further assist the on-going restoration work, continue to establish cooperation between all
of the stakeholders, and solicit community involvement in the restoration program, a semi-
annual to annual Wax Myrtle Restoration meeting should be held. The next meeting should be
scheduled in spring 2004.
Schedule

The following table shows an estimated schedule of tasks for the Implementation of this
restoration plan.

Table 1. A estimated schedule for restoration work for 2003 and 2004.
 Task                           Responsibility/Contractor              Schedule (2003-2004 only)

 Hydroseeding/ Brush            County Fire Safe Crews,                October/November, 2003
 Removal, Erosion               Shelterbelt Builders, Davey            (mostly completed)
 Control, (and eucalyptus       Tree, City of Brisbane
 tree removal if funding
 available)

 Weed Control                   West Coast Wildlands                   September, 2003-(completed)
 1) Initial control             Shelterbelt Builders                   October, 2003- (completed)
 2) Follow-up control                                                  March, 2004 (to be timed with
 3) 2nd follow up control                                              emergence of weeds)
 *(repeat sequence for
 2004).
 Replanting                     Friends of San Bruno Mountain          January/February 2004
                                Shelterbelt Builders                   (To be timed with first heavy
                                Bay Area Mountain Watch                rains)
                                CDF Fire Safe Crews
 Monitoring                     Habitat Manager (TRA)                  1) Every 2-3 months
 1) Photo Points                West Coast Wildlands                   2) (once per year)
 2) Planting Islands %                                                 3) (once per year), * if funding
 survival                                                              available)
 3) Permanent quadrats*

 Community Involvement          County Park Staff                      Spring 2004
 Wax Myrtle Restoration         Habitat Manager (TRA)
 Stakeholders Meeting
 Supervision and                County Park Staff                      Ongoing for duration of project.
 Coordination                   Habitat Manager (TRA)


Ongoing Management of Wax Myrtle Ravine

After the funding for this Coastal Conservancy Grant runs out, the weed control and restoration
work for Wax Myrtle Ravine should be re-incorporated into the HCP Habitat Manager’s habitat
management program. Appropriate weed control follow up work should be scheduled on a 1-2
times per year basis to follow up on all exotic species infestations that have been controlled
through this work described in this plan.


Thomas Reid Associates                          11
Post-Burn Restoration Plan for Wax Myrtle Ravine, San Bruno Mountain             March, 2004



For the long-term management of the area, the area will require periodic burning and/or
grazing on an interval of at least one burn or graze event every 20 years (estimated) to
maintain the native grasslands. Specific areas could be identified within the ravine that would
receive more frequent treatments, such as southfacing slopes with predominately grassland
habitat. Other areas, such as moist north-facing exposures would require less-frequent
burning and/or grazing.

References

San Mateo County, 2002. Enhancement Plan for 175-acre Area of San Bruno Mountain
       County
Park. Prepared by Thomas Reid Associates, November 2002.

San Mateo County, 2002. Wax Myrtle Restoration Plan: Plan for Removal of Eucalyptus
      Biomass in Wax Myrtle Ravine. Prepared by Thomas Reid Associates, June, 2002.

San Bruno Mountain Watch, 2003. San Bruno Mountain Exotic Weed Mapping and Control
      Project, Work Plan 2003-2004. Prepared by Shelterbelt Builders, August 25, 2003.

San Mateo County, 2001, 2002. Appendices within San Bruno Mountain Habitat Island Annual
      Reports (2001, 2002). Prepared by Shelterbelt Builders for the San Bruno Mountain
      HCP Annual Reports to USFWS, Permit No. PRT-2-9818.

Personal Communications

Mike Forbert, West Coast Wildlands, December, 2003.
Mark Heath, Shelterbelt builders, November 2003.
Sam Herzberg, San Mateo County, November 2003
Eric McHuron and Doug Allshouse, Friends of San Bruno Mountain, August 2003
Kevin Frederickson, Brookfield Homes, November 2003.
Matt Fabry, City of Brisbane, February, 2004.




Thomas Reid Associates                          12

						
Related docs
Other docs by gdf57j
PEPE ROMERO
Views: 84  |  Downloads: 0
EcoFinance
Views: 1  |  Downloads: 0
Frequently Asked Questions about Polonium 210
Views: 58  |  Downloads: 0
CGIAR Part Comm Rev Final Report
Views: 70  |  Downloads: 0
The Orange Peel
Views: 86  |  Downloads: 0
BWSC Sewer Lateral Financial Assistance Program
Views: 94  |  Downloads: 0