PC RES 1991-052 P.C. RESOLUTION NO. 91-52
A RESOLUTION OF THE PLANNING COMMISSION OF
THE CITY OF RANCHO PALOS VERDES APPROVING
GRADING PERMIT NO. 1390 FOR REMEDIAL GRADING
REQUIRED TO IMPLEMENT PREVIOUSLY APPROVED
TENTATIVE TRACT MAP NO. 37885 AND CONDITIONAL
USE PERMIT NO. 79 FOR 42 SINGLE-FAMILY LOTS
AND 2 OPEN SPACE LOTS LOCATED NORTH AND WEST
OF THE FORRESTAL DRIVE/PIRATE DRIVE INTERSECTION,
EAST OF KLONDIKE CANYON AND SOUTH OF THE CITY
OF ROLLING HILLS.
WHEREAS, J.M. Peters Company has requested approval of
Grading Permit No. 1390 required to implement previously approved
Tentative Tract Map No. 37885 and Conditional Use Permit No. 79
for the creation of forty-two ( 42 ) single-family lots and two ( 2 )
common open space lots on a 163± acre site located north and west
of the Forrestal Drive/Pirate Drive intersection, east of Klondike
Canyon and south of the City of Rolling Hills; and
WHEREAS, on November 21 , 1989, the City Council of the City
of Rancho Palos Verdes adopted Resolution No. 89-109 recommending
approval of Conditional Use Permit No. 79-Second Revision and
Resolution No. 89-110 recommending approval of Tentative Tract Map
37885 for forty-two ( 42 ) residential lots and two ( 2) common open
space lots; and
WHEREAS, one of the conditions of approval contained in
Resolution 89-109 required the developer to submit a grading
permit for the development of the tract and for the removal of any
geologic hazard on the property prior to Final Map approval ; and
WHEREAS, on December 1, 1989 the developer submitted Grading
Application No. 1390 and Environmental Assessment No. 596 for
approval of approximately 810, 000 cubic yards of grading for
development of the previously approved tract and approximately
1, 050 , 000 cubic yards of remedial grading to correct existing
geologic hazards on the property; and
WHEREAS, on February 6, 1990 a public hearing was held by the
City Council , at which time the City Council defined the preferred
remedial grading alternative and identified goals for achieving
slope stabilization on the site; and
WHEREAS, a Draft Supplemental Environmental Impact Report
(DSEIR) was prepared in accordance with the State of California
Environmental Quality Act Guidelines which analyzed the
environmental impacts of the tract development and remedial
grading; and
WHEREAS, after notice issued pursuant to the provisions of
the City Development Code, the Planning Commission of the City of
Rancho Palos Verdes held a public hearing on September 24, 1991 ,
at which time all interested parties were given an opportunity to
be heard and present evidence as to the merits of the proposed
grading.
NOW, THEREFORE, THE PLANNING COMMISSION OF THE CITY OF RANCHO
PALOS VERDES DOES HEREBY FIND, DETERMINE AND RESOLVE AS FOLLOWS:
Section 1 : That the grading required for the creation of
forty-two ( 42) single family lots and related improvements is
consistent with the type of land use and density identified in the
City' s General Plan. That the remedial grading is also consistent
with the policies for public health and safety related to the
natural environment identified in the City' s General Plan.
Section 2 : That the remedial grading required for the
creation of forty-two ( 42 ) single family lots, as conditioned, is
consistent with the City' s Development Code for projects within
the RS-1 zoning districts under a Residential Planned Development.
Section 3 : That the use of the lots shall be for single
family residential dwelling units, common open space and related
improvements, which is compatible with the objectives, policies,
programs and land use specified in the General Plan and the Urban
and Natural Overlay Control Districts, which have been established
to protect existing drainage courses, natural vegetation and
extreme slopes within the City.
Section 4: That, pursuant to the goals identified by the
City Council on February 6, 1990 , the remedial grading achieves
stabilization of the near vertical quarry wall north of and
parallel to Forrestal Drive as an independent geologic review of
the proposed quarry slope grading concluded that the proposed cut
slope would be grossly stable and would alleviate the previously
identified geologic hazards on the site.
Section 5 : That, pursuant to the goals identified by the City
Council on February 6, 1990, and based on stability issues related
to both the quarry slope and the quarry bowl , the remedial grading
project achieves stabilization of the quarry bowl with the least
amount of fill possible.
Section 6: That, pursuant to the goals identified by the
City Council on February 6, 1990, all grading will be balanced on
the project site and will involve no exportation of fill off of
the applicant' s property.
Section 7 : That, pursuant to the goals identified by the
City Council on February 6, 1990, mitigation measures will require
the revegetation of all graded areas, and especially in those
areas affected by significant landform modification to the quarry
face and quarry bowl .
Resolution No. 91- 52 .
Page 2
Section 8 : That, pursuant to the goals identified by the City
Council on February 6, 1990, the proposed remedial grading will
improve the drainage and hydrology of the quarry slope and quarry
bowl areas.
Section 9: The Planning Commission declares the Final
Supplemental Environmental Impact Report certified per Resolution
No. 91- in compliance with City and State guidelines and that
the Planning Commission reviewed and considered the contents of
the FSEIR in reaching its decision on the project. The Planning
Commission further adopts and incorporates by reference the
environmental findings and statement of overriding considerations
set forth in Resolution No. 91-
Section 10 : For the foregoing reasons and based on
information and findings included in the Staff Reports, minutes,
records of proceeding and evidence presented at the public
hearings, the Planning Commission of the City of Rancho Palos
Verdes hereby approves approve Grading Permit No. 1390, subject to
the attached conditions contained in Exhibit "A" , which are
necessary to protect the public health, safety and general welfare
in the area.
PASSED, APPROVED and ADOPTED this 8th day of October, 1991 .
1‘1:(
Peter Vo Hagen
Chairman
Z7//
o ert Bena d, Directo of
Environmental Service and
Secretary to the Commission
Resolution No. 91-52 .
Page 3
EXHIBIT "A"
CONDITIONS OF APPROVAL
GRADING APPLICATION NO. 1390
GENERAL
1. The Developer shall adhere to all previously approved
Conditions of Approval of Conditional Use Permit No. 79-
Second Revision as described in City Council Resolution
89-109, and Tentative Tract Map No. 37885-Second
Revision as described in City Council Resolution 89-110,
except as modified herein.
2 . Prior to recordation of the final map or prior to
commencement of work, whichever occurs first, a bond,
cash deposit, or other City approved security, shall be
posted to cover the costs of grading in an amount to be
determined by the City Engineer.
3 . Development of the project will comply with all
applicable Code and ordinance requirements for
construction and grading.
GRADING
1. The Developer shall adhere to all previously approved
Grading Conditions of Approval of Conditional Use Permit
No. 79-Second Revision as described in City Council
Resolution 89-109 and repeated below:
1) Prior to -approval of the Final Map, the developer
shall submit a grading permit for the development of
the tract (including but not limited to grading for
streets, lots and trails) and to remove any geologic
hazard on the property as determined by the City
Geologist.
2) The grading quantities specified in the grading
permit for the development of the streets and lots
shall be in substantial compliance with the cut and
fill quantities presented to the Planning Commission
as part of the second revision request.
3) All created slopes within the tract shall not exceed
2 : 1, with the exception of Lot 42, where all created
slopes shall not exceed 3 : 1.
4) All natural and created slopes greater than 3 : 1
shall be designated as restricted use areas on the
Final Map.
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P.C. Resolution No.91-52
5) The following retaining walls may be installed on
Lots 1 through 41:
a. A maximum of one (1) upslope retaining wall in
the rear yard not to exceed five (5) feet in
exposed height.
b. A maximum of one (1) retaining wall in each side
yard not to exceed three (3) feet, six (6)
inches in exposed height.
c. Any other retaining walls shall be subject to
the review of the Director of Environmental
services.
6) All retaining walls on Lot 42 shall comply with Code
requirements.
7) Any retaining wall along the north side of Forrestal
Drive shall be subject to the review and approval of
the Director of Public Works.
2 . The grading operation shall be limited to that necessary
to develop the residential tract (creation of lots and
streets) and to perform remedial grading, as designated
on the submitted grading plan. Grading quantities shall
be in substantial compliance with the cut and fill
quantities presented to the Planning Commission as part
of the Grading Plan analyzed in the Supplemental EIR.
3 . There shall be no off-site exportation of fill material.
All cut and fill quantities shall be balanced on site.
4. There shall be no blasting or use of specialized rock
crushing equipment for carrying out the grading activity.
GRADING CONSTRUCTION PLAN
1. A construction plan shall be submitted to the Director
of Environmental Services prior to any grading permits
being issued. Said plan shall include but not be
limited to the following:
A. A phasing plan
B. Limits of grading
C. Estimated length of time for rough grading and
improvements
D. Location of construction trailer, construction
signs, equipment storage area, and location and
type of temporary utilities.
Page 2
P.C. Resolution No.91-52
Exhibit A
2 . The grading activity on the site shall not disrupt the
recreational activities at the Ladera Linda Community
Center and on the adjacent Portuguese Bend playing
fields. As such, the grading operations involving the
re-construction and alignment of Forrestal Drive and any
other grading activity located on or within 100 feet of
the Portuguese Bend playing fields shall only be
performed from January to May so as not to disrupt the
recreational activities which are concentrated between
June and December. This limitation may be modified by
the Director of Environmental Services or Director of
Recreation and Parks if recreational schedules on the
fields change.
3 . All construction and grading activities, including
arrival of grading equipment and vehicles, and equipment
warm up shall be limited to the hours of 7: 00 a.m. to
7: 00 p.m. , Monday through Saturday.
4. Prior to grading, a Circulation and Safety Plan and
Program will be prepared and funded by the Developer
which will include:
A. Safety Training and Indoctrination
B. Truck Inspection Program
C. Route Designation
D. Truck type
5. When deemed necessary by the Director of Environmental
Services or the Director of Public Works, traffic
control devices and/or flagmen will be provided at the
site entrance for construction/grading vehicle ingress
and egress.
6. To ensure the community's accessibility to Ladera Linda,
flagmen shall monitor the ingress and egress of any
trucks or heavy equipment which may traverse access
points to the Ladera Linda Community Center and its
related facilities.
7. As required under the previously approved tract
conditions of approval of Tentative Tract Map -No. 37885
• the developer shall be responsible for repairs to any
neighboring streets which may be damaged during
development of the tract, including but not limited to
the designated access route(s) to the tract for any
trucks or heavy equipment. Prior to issuance of grading
permits, the developer shall post a bond, cash deposit,
letter of credit or other City approved security in an
amount sufficient to cover the costs to make permanent
repairs of any damage to streets and appurtenant
structures as a result of this development. In addition
to providing such security, the developer shall pay for
a pavement analysis of the streets to be used as
Page 3
P.C. Resolution No. 91-52
Exhibit A
designated access routes for any trucks or
equipment prior to the start of construction, and at
completion of construction. The developer shall provide
compensation for any loss of pavement life as determined
by this study along the designated access routes for any
trucks or heavy equipment that may occur as a result of
this development. heavy
8. All grading and construction equipment will be stored on
the project site.
9. Equipment maintenance (refueling, oil-changes, etc. )
areas will be restricted to areas designated in
consultation with the City prior to construction and
grading activities.
10. All grading equipment, fixed or mobile, shall be
equipped with properly operating and maintained
mufflers. Any stationary on-site noise sources such as
compressors, generators, or power saws shall be equipped
with hospital grade mufflers for engine driven sources,
or shall be surrounded by a temporary plywood enclosure
as a noise baffle.
11. Stockpiling and/or vehicle staging areas shall be
designated on the project site and shall not be located
on Forrestal Drive or any public street. These staging
areas shall be located as far as practical from existing
residential dwellings.
12. Fugitive dust generation during cleaning, grading, earth
moving, or excavation shall be controlled by regular
watering, paving of construction roads, or other dust
preventative measures in accordance with SCAQMD Rule
403 .
13 . Prior to issuance of grading permits and/or building
permits, a plan and program to control and prevent dust
and windblown earth problems shall be submitted to the
Director of Environmental Services for review and
approval. Methods may include but shall not be limited
to requiring truck covers, an on-site truck wash down
station, street sweeping and on-site grade watering.
14. Construction activities will be temporarily halted on
high ozone days or during second stage smog alerts at
the direction of the Director of Environmental Services.
15. To ensure public safety and to secure the site during
construction, the Developer shall submit a fencingplan
for approval to the Director of Environmental Services.
Said plan shall replace and/or provide fencing at the
top of the slope, adjacent to Forrestal Drive, in and
around the Portuguese Bend fields, park, and adjoining
Page 4
P.C.Resolution No.91-52
Exhibit A
slopes. Further, fencing shall be erected around the
perimeter of the playing field at the Ladera Linda
Community Center.
16. Noncompliance with the above grading and construction
restrictions shall be grounds to stop work immediately
on the property.
HYDROLOGY AND DRAINAGE
1. The Developer shall adhere to all previously approved
Drainage Conditions of Approval of Tentative Tract Map
No. 37885-Second Revision as described in City Council
Resolution 89-110 and repeated below:
1) Prior to recordation of the Final Map or prior to
commencement of work, whichever occurs first, a
bond, cash deposit, letter of credit or other City
approved security to cover costs of construction in
an amount to be determined by the City Engineer.
2) Prior to recordation of the Final Map or prior to
commencement of work, whichever occurs first, the
developer shall submit a hydrology study to the City
Engineer to determine any adverse impacts to
existing flood control facilities generated by this
project. Should the City Engineer determine that
adverse impacts will result, the developer will be
required to post a cash deposit or bond or letter of
credit or other City approved security in an amount
to be determined by the Director of Public Works, to
mitigate these adverse impacts.
3) Drainage plans and necessary support documents to
comply with the following requirements must be
approved prior to the recordation of the Final Map
or commencement of work, whichever occurs first:
A. Provide drainage facilities to remove any flood
hazard to the satisfaction of the City Engineer
and dedicate and show easements on the Final
Map.
B. Eliminate sheet overflow and ponding or elevate
the floors of the buildings, with all openings
in the foundation walls to be at least twelve
inches above the finished pad grade.
C. Provide drainage facilities to protect the lots
from high velocity scouring action.
Page 5
P.C. Resolution No. 91-52
Exhibit A
D. Provide for contributory drainage from
adjoining properties.
4) In accordance with Section 1601 and 1602 of the
California Fish and Game Code, the State Department
of Fish and Game, 350 Golden Shore, Long Beach,
California 90802, telephone 435-7741, shall be
notified prior to commencement of work within any
natural drainage courses affected by this project.
5) The following improvements shall be made to the
existing drainage system:
A. Modify the outlet structure of P.D. 122 (and
P.D. 086, if necessary) to include an adequate
flow energy dissipation device. (Details for
modification must be processed through the
Flood Control District) .
B. Modify the 3 inlets for P.D's 887 and 803 to
provide partial debris control.
C. Correct any internal structural defects and
repair damage which may be found in the piping
system for P.D. 's 886, 887 and 803 .
D. All existing and new drainage structures shall
be repaired, designed and constructed so that
L.A.C.D.P.W. will take over and assume
maintenance of said structures. The existing
structures include but are not limited to P.D.
803, 886 and 887. All drainage work to be
according to L.A.C.D.P.W. standards.
6) All drainage swales and any other on-grade drainage
facilities, newly constructed and/or reconstructed,
including gunite, shall be of an earth tone color
which shall be approved by the Director of
Environmental Services.
2 . All proposed cut and fill slopes shall be landscaped and
irrigated, wherever possible, to reduce potential
erosion. To reduce the potential for nuisance water
from over irrigation and to revegetate the unirrigated
slopes, drought tolerant vegetation shall be used for
landscaping purposes. Where feasible, drought tolerant
plantings of the local origin coastal sage scrub
community shall be used.
3 . Impervious surface drains shall be installed to conduct
surface waters across all proposed cut and fill slopes.
These drains shall also reduce percolation to the
groundwater of Klondike Canyon. In addition, surface
drains shall be designed in a manner which allows water
Page 6
P.C. Resolution No.91-52
Exhibit A
to pond in a small catchment basin for wildlife in the
area.
4. Measures will be taken to eliminate erosion downslope
from the grading areas. Temporary measures could
include sand bag, silt fences, and hay bales placed into
drainages. An erosion control plan shall be approved by
the City prior to issuance of Grading Permits.
GEOLOGY
1. The Developer shall adhere to all previously approved
Geology Conditions of Approval of Tentative Tract Map
No. 37885-Second Revision as described in City Council
Resolution 89-110 and repeated below:
1) Prior to recordation of the Final Map or
commencement of work, whichever occurs first, a
bond, cash deposit, or letter of credit or the City
approved security shall be posted to cover costs for
any geologic hazard abatement in an amount to be
determined by the City Engineer.
2) All geologic hazards associated with this proposed
development shall be eliminated or the City
Geologist shall designate a restricted use area in
which the erection of buildings or other structures
shall be prohibited and the location shall be
designated on the Final Map as "Geologic Hazard
Setback Ares" . In addition, the geologic stability
of the 42 residential lots shall be confirmed to the
satisfaction of the City Geologist prior to Final
Map approval.
3) Prior to approval of grading permits, the developer
must accomplish the following:
A. Submit stability and design calculations for
recommended buttresses.
B. Submit stability and design calculations for
recommended realignment of Forrestal Drive.
C. Make detailed recommendations for trimming the
quarry slopes and protecting the Forrestal
Extension roadway. Show recommended trimming in
plan and cross section views, and verify the
stability of trimmed and critical slopes with
calculations. Analyze (a) the effects of the
joints and fractures on the overall available
shear strength and (b) any potential for
deteriorating strength in the future.
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P.C. Resolution No. 91-52
Exhibit A
D. Make specific recommendations for repairing
and maintaining the shallow stability of the
existing road cut west of "A" Drive. Planting
is not regarded as a sufficient or certain
remedy, particularly on steep slopes.
E. Make final recommendations for treatment of
noncompacted fill, talus and slopewash in areas
of proposed pads and roads. Submit settlement
or other analyses to support recommendations.
F. Submit specific recommendations for fill and
buttress subdrains and final recommendations of
fill blankets. ' Demonstrate that recommended
filter materials will not be clogged by
migrating fines.
G. The soils engineer and engineering geologist
must approve the plans incorporating their
recommendations. Include on plans all
corrective work, setback lines, and layouts and
design details of subdrains.
4) Prior to issuance of building permits, submit a
Geology and/or Soils Engineer's report on the
expansive properties of soils on all building sites
in the proposed subdivision. Such soils are defined
by Building Code Section 2904 (b) .
5) An as-built geological report shall be submitted for
structures founded on bed rock. An as-built soils
and compaction report shall be submitted for •
structures founded on fill as well as for a l l
engineered fill areas.
6) The Developer shall install three multi-stage
piezometers to monitor ground water conditions at
all times. Monitoring and maintenance of these
piezometers shall be the responsibility of the City
of Rancho Palos Verdes and the cost of this work
shall be paid by the Homeowner's Association.
7) A $100, 000 cash deposit, interest bearing, shall be
posted for 20 years prior to the first Certificate
of Occupancy being issued for installation of 7 to
10 Hydraugers (horizontal wells) if ground water
conditions change and water removal is necessary.
8) A four (4) foot earth cap pursuant to the City's
consulting geologist recommendation shall be placed
on all lots utilizing low permeable soil.
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P.C. Resolution No. 91-52
Exhibit A
2 . The three multi-stage piezometers to monitor groundwater
conditions at the site, as required by Geologic
Condition No. 6 above, shall be equipped so that they
can be converted into dewatering wells if the Director
of Public Works determines that the monitoring indicates
a rise in the water table.
3. The proposed grading for the tract development, quarry
slope cut and quarry bowl fill shall meet all of the
Conditions of Approval stipulated by the City's
Consulting Geologist. Any variations to the approved
conditions shall require approval from the City's
Consulting Geologist. The specific geologic conditions
are as follows:
Residential Development
1) All recommendations of the consultant, except as
modified herein, shall be incorporated into the
design and construction. Recommendations for Tensar
Geogrids are excluded.
a. All cuts into "mudf low" deposits shall be
inspected by the consultant, the City geologists
and geotechnical engineer to determine whether
or not shear planes are present. If no shear
planes are encountered, then work may proceed
per the consultant's recommendations. If shear
planes are encountered, then all "mudf low"
deposits shall be removed and replaced as an
engineered fill.
b. The recommended monitoring wells shall be
incorporated into designs.
2) The consultant shall review and approve the final
plans and specifications by manual signature.
3) Before permits for grading may be issued, the
consultant shall issue a statement in accordance
with Code Section 311 which requires that every
report shall contain a finding regarding the safety
of the site for the proposed structure or use
against hazard from any variety of landsliding or
settlement or slippage and a finding regarding the
effect of the proposed building, grading,
construction, and useof the site will have on the
geological stability of property outside the site.
The Code in Rancho Palos Verdes is currently the
1988 UBC with amendments.
4) The consultant shall continuously inspect and
monitor all grading and test all fills placed. An
as-graded soils and geologic report, complete will
Page 9
P.C. Resolution No. 91-52
Exhibit A
fill and compaction test locations, and geologic
map, based upon continuous geologic mapping of key
and fill bottoms, and cut exposes shall be submitted
and reviewed by the City's geotechnical engineer,
prior to issuance of a building permit for any
structures founded in said fill or prior to issuance
of the certificate of occupancy otherwise. The as-
graded report shall contain specific
recommendations:
A. The consultant recommends that more specific
evaluations of proposed building footprints as
regards mitigation of large potential
differential settlements prior to the start of
grading. This shall be performed by the
consultant and submitted to the City for
approval.
B. Provisions for monitoring settlement as
recommended by the consultant shall be
performed.
5) Foundations and floor slabs cast on expansive soils
shall be designed in accordance with the
consultant's recommendations and conform to the
minimum requirements of the Code and the City's
guidelines.
6) Foundations shall be set back from descending slopes
in accordance with the consultant requirements.
Minimum foundation setbacks should be determined in
accordance with the expression H/3+5, where H is the
height of the slope, measured in feet. The setback
distance should be measured horizontally from the
top or face of the slope and need not exceed a
distance of 25 feet. Foundations should extend to
such a depth as to be unaffected by any creep prone
surf icial soil and/or weathered bedrock. Field
inspection and approval by the consultant(s) is
required.
Quarry Basin
1) All of the recommendations of the consultant, except
as modified herein, shall be incorporated into the
design and construction.
2) The consultant shall review and approve the final
plans and specifications by manual signature.
3) Where fills are to be placed, including trench and
retaining wall backfills, an as-graded soils and
geologic report, complete with fill and compaction
Page 10
P.C. Resolution No. 91-52
Exhibit A
test locations, and geologic map, based upon
continuous geologic mapping of key and fill bottoms
shall be submitted and reviewed by the City's
geotechnical engineer prior to issuance of a
building permit for any structures founded in said
fill or prior to issuance of the certificate of
occupancy otherwise.
4) Where fill is placed at less than the Code required
degree of compaction (90%) the consultant shall take
sufficient tests to determine that the fill will
have acceptable strength and settlement
characteristics. No less than one direct shear test
shall be performed and submitted for every eight
feet of vertical lift.
5) Foundations and floor slabs cast on expansive soils
shall be designed in accordance with the
consultant's recommendations and conform to the
minimum requirements of the Code and the City's
guidelines.
Quarry_ Slope,
1) Before any approvals are granted for the development
area, the consultant shall clarify that no potential
failure surface with computed factors of safety less
than 1. 50 pass behind the geologic setback line in
the area of the proposed Forrestal Drive cul-de-sac.
2) The consultant has stated that geogrids will not be
required for fill slope stability. This approval is
only for stabilization measures recommended by the
consultant not requiring geogrids.
3) All of the recommendations of the consultant, except
as modified herein, shall be incorporated into the
design and construction. An addendum clearly
stating any proposed deviations from Chapter 70 and
justifying same shall be submitted.
4) The consultant shall review and approve the final
plans and specifications by manual signature.
5) Where fills are to be placed, including trench and
retaining wall backfills, an as-graded soils and
geologic report, complete with fill and compaction
test locations, and geologic map, based upon
continuous geologic mapping of key and fill bottoms
shall be submitted and reviewed prior to issuance of
a building permit for any structures founded in said
fill or prior to issuance of the certificate of
occupancy otherwise.
Page 11
P.C. Resolution No. 91-52
Exhibit A
6) Foundations and floor slabs cast on expansive soils
shall be designed in accordance with the
consultant's recommendations and conform to the
minimum requirements of the Code and the City's
guidelines.
BIOLOGICAL RESOURCES
1. Because the proposed remedial grading was not
anticipated at the time of the approval of Tentative
Tract Map 37885-Second Revision, the condition entitled
"Mitigation Measure #1" which requires that the
Crossosoma californicum be avoided during all grading
activity cannot be met. In order to ensure that the
identified existing plants be protected and preserved,
said condition shall be amended as follows:
The Developer shall be responsible for implementing a
preservation plan that will ensure that the existing
Crossosoma californicum plants identified in the Final
EIR are preserved on the site. Such plan shall be
submitted to and approved by the Director of
Environmental Services prior to any grading activity.
2 . Prior to any or other project-related development
activity on the project site, a qualified biologist will
set up markers around the Astragalus plants. These
markers will consist of visible stakes and ribbons
completely surrounding the individual Astragalus plants.
3 . Prior to any grading or other project-related
development activity on the project site, a five-foot
chain link fence will be constructed surrounding each of
these Astragalus plants to establish conserved areas
around each plant (the "Conserved Areas") . A qualified
biologist will be present during the identification of
fence locations so as to include individual plants that
may be overlooked.
4. The Conserved Areas will be visibly marked both by
markers and signs. The signs will indicate that they
are strictly conserved areas, and are not to be
disturbed. The grading and other project-related
development activities will be designed to avoid any
contact with or disruption of these Conserved Areas.
5. All workers involved in project-related activities will
be informed of the existence and location of the
Conserved Areas and the conserved Astragalus plants.
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P.C. Resolution No. 91-52
Exhibit A
All workers not specifically involved in the setting up
of the Conserved Areas or the examination of the
Astragalus will be given specific instructions to avoid
any contact with the Conserved Ares.
6. For the Astragalus plants (two) which have been
identified in the subsequent survey in the quarry bowl
area, the following approach will be followed:
A. The area around each Astragalus will be "sifted" by
a qualified Lepidopterist to determine whether any
Palos Verdes Blue Butterfly (PVBB) pupae are present
and to remove them from the substrate without
damage. To mitigate the anticipated loss of the
PVBB foodplant during the sifting process, 200
Astragalus seedlings will be established in
appropriate coastal sage sites close by, but clearly
beyond the range of any development activity. Seeds
for the restock will be provided from on-site
individuals. These seedlings will be irrigated for
a period of one year to assure their persistence.
If PVBB pupae are found, the U.S. Fish and Wildlife
Service (USFWS) will be contacted and no further
actions which affect the plant area will be taken
without consultation with the USFWS.
7. If prior to or during grading, it is discovered that an
additional Astragalus plant exists on the site which has
not previously been identified, a procedure will be
established to notify a supervising project operator,
and all grading and/or project-related activities will
be brought to a halt until implementation of one of the
following contingency measures:
A. Establishment of an additional Conserved Area for
the newly discovered Astragalus.
B. Sifting of the Astragalus to determine if PVBB pupae
are present. If it is determined that no pupae are
present, an attempt will be made to transplant the
analyzed plant to an appropriate site designated by
the USFWS.
8. If, during grading or other project-related activities,
a Conserved Area is accidentally disturbed by grading
and/or other development activities, all such activities
will be halted, the USFWS contacted, and one of the
following contingency measures implemented:
A. Restoration of the Conserved Area; or
B. "Sifting" of the Astragalus or the Conserved Area,
in accord with the approach outlined above.
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P.C. Resolution No. 91-52
Exhibit A
9. If a PVBB is sighted at any time, the USFWS will be
contacted immediately and no further actions which
affect the project site will be taken without direct
consultation with the Service.
10. Should additional plants be located and subsequently
lost, they will be replaced at the ratio of 50: 1.
Monitoring will guarantee persistence of 50 percent of
the plants set out after two years.
11. Fuel modification plans shall be implemented to avoid
additional impacts to the coastal sage scrub habitat.
A. The feasibility of incorporating fire sprinklers
within individual homes will be investigated with
the County Fire Marshall as an option to vegetation
clearing.
B. If necessary, periodic irrigation of existing and
restored coastal sage scrub adjacent to development
areas will be permitted to maintain vegetation
moisture levels and to reduce fuel load.
12 . Prior to any grading or vegetation clearing, a directed
survey shall be conducted to locate on-site nests of
California gnatcatchers. If eggs or young birds are
found, the U. S. Fish and Wildlife Service shall be
contacted prior to any grading of habitat. If
gnatcatcher nests are present, no grading or vegetation
clearing will take place within 500 feet of known
nesting sites during the nesting/breeding season (March
1 through June 30) .
13 . During vegetation clearing or grading, all areas of
coastal sage scrub to be avoided shall be protected
through the construction of temporary fencing. No
construction access, parking or storage will be
permitted within the fenced areas. Vehicle
transportation routes between cut-and-fill locations
will be restricted to a minimum number. Vehicle
transportation routes shall be restored to create high-
quality gnatcatcher habitat following construction.
14. Direct impacts to 11. 3 acres of quality coastal sage
scrub shall be mitigated by replacement of 23 .8 acres of
coastal sage scrub habitat within graded cut-and-fill
areas elsewhere on the project site (2 : 1 areal
replacement) . Habitat replacement will be initiated
concurrent with project impacts.
A. Replacement shall take place in three locations on
the project site: 1) on the south-facing slopes
directly adjacent to the development area (2 .5
acres) ; 2) on the south-facing cut-and-fill slope on
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P.C. Resolution No. 91-52
Exhibit A
the northern side of Forrestal Drive (12.8 acres) ;
and 3) onthe haul road and fill area in the eastern
quarry site (8.5 acres) .
15. Direct impacts to 19.7 acres of disturbed coastal sage
scrub/California gnatcatcher habitat shall be mitigated
through the enhancement of the 20.5 acres of degraded
coastal sage scrub within the designated habitat
preservation area (1: 1 areal enhancement) .
A. Coastal sage scrub/California gnatcatcher habitat
enhancement shall take place in the 20.5 acres of
presently degraded coastal sage scrub habitat in the
eastern portion of the project area. Enhancement
will include: 1) the removal of existing non-native
invasive species such as ice plant (Carpobrotus
edulis) , pampas grass (Cortaderia atacamensis) and
mustards (Brassica s.p.p. ) ; 2) the removal of human
disturbances (off-road vehicle use) ; 3) the de-
compaction of disturbed soils; 4) the re-
introduction of appropriate coastal sage scrub
species by seed and by container; and 5) the
construction of protective fencing around the
perimeter of the habitat preservation area. Habitat
enhancement will be initiated prior to or concurrent
with project impacts.
16. Revegetation of the remedial grading areas shall be
performed by the Developer using seeds or nursery-grown
plants, preferably with seeds, other propagules, or
transplants from this property consisting of plants of
the local origin coastal sage scrub community.
17 . Irrigation systems will be installed and maintained by
the project developer until the Director of
Environmental Services is satisfied that the replacement
vegetation required through these conditions is
established.
18. A bond in an amount to be determined by the Director of
Environmental Services will be posted by the developer
to assure adequate establishment of the vegetation.
ARCHAEOLOGY/PALEONTOLOGY
1. Grading and clearing operations and construction of
infrastructure improvements shall be monitored on-site
by a qualified archaeologist and paleontologist.
2 . Any significant specimens recovered will be donated to
the City or other appropriate public repository for
future use or display.
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P.C. Resolution No. 91-52
Exhibit A
MITIGATION MONITORING
1. The Mitigation Reporting and Monitoring Program
described in attached Appendix "A" shall be implemented
by the Developer in cooperation with and under the
review of the Director of Environmental Services.
2. All costs associated with implementation of the
Mitigation Reporting and Monitoring Program shall be the
responsibility of the Developer.
•
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P.C. Resolution No. 91-52
Exhibit A