20120731 Late CorrespondenceTO:
FROM:
DATE:
SUBJECT:
HONORABLE MAYOR &CITY COUNCIL MEMBERS
CITY CLERK
JULY 31,2012
ADDITIONS/REVISIONS AND AMENDMENTS TO
AGENDA**
Attached are revisions/additions and/or amendments to the agenda material presented
for tonight's meeting:
Item No.
2
Description of Material
Landslide Workshop Handout
Respectfully submitted,
Teresa Takaoka
**PLEASE NOTE:Materials attached after the color pagels)were submitted
through Monday,July 30,2012**.
W:'AGENDA\2012 Additions Revisions to agenda9.20120731 additions revisions to agenda.doc
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WELLS GRILLED BETWEEN 1910-1996
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TOTAL DISPLACEMENT SINCE
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NOTES TO ACCOMPANY LANDSLIDE WORKSHOP PRESENTAT10N
JULY 31,2012
1.LANDSLIDE WORKSHOP -Intro Slide
2.RECOMMENDA TIONS
Receive and File
Consider Future Projects
3.MITIGA nON MEASURES
4.CASON SHEAR PINS -MAP
5.MITIGATION EFFORTS
Caissons were installed in 1957 -not effective
Grading Perfonned at various times -fairly effective
Dewatering efforts -very effective
Drainage -very effective -high maintenance costs
Sewer System -very effective
6.CAISSONS IN SURF ZONE
7.GRADING
-Lake Ishibashi was graded to allow drainage.
-PYDSouth was realigned to bringing the roadway back into its right of
way
-Yacht Harbor Road is graded every 3-5 years to minimize the impact of
the Portuguese Bend Landslide on the Klondike Landslide
-PYDSouth Shoulder Grading was required to minimize the localized
effects of rapid landslide movement on the roadway.PYDSouth Shoulder
(2010)
8.LAKE ISHIBASHl -Location Map
9.LAKE ISHIBASHI
The goal of the project was to allow the ponding water to drain and not
penetrate into the landslide.
The current alignment of PYDS was established during the time.
Photos were taken in 1986
10.LAKE ISHIBASHI AREA TODAY
The photos were taken in 2012
11.GRADING 2010
Location Map for the grading operations
Photo shows the location of PYDS &Yacht Harbor Drive
.;20
12.PHOTOS
Yacht Harbor Grading 2010
PVDS Grading 20 I0
13.PHOTO -PVDSouth Shoulder Grading 2010
14.SURFACE DRAINAGE
-RDA attempted to gain consensus with ACLAD residents 10 improve the
drainage facility within Altamira Canyon
-RDA installed a I/,pipe drainage facility in an attempt to collect runoff at
Portuguese Bend and Paintbrush Canyons preventing it from entering the
landslide.
15.ALTAMlRA,PORTUGUESE BEND &PAINTBRUSH CANYON -Location
Map
16.DRAINAGE SYSTEMS
-\I,pipe drainage systems were installed to collect water throughout the
landslide and transmit it to the ocean.They are made of CMP and were
difficult to adjust when the land moved.They were very difficult to clean.
-HDPE (plastic)Corrugated pipes were installed because they were easy
to adjust and or pull apart for cleaning.They pull apart easily when
subjected to land movement.
-A system ofY,round CMP,full CMP pipes,ADS corrugated (plastic)
pipes and HDPE (solid thick wall spin welded polyethylene pipe)have
been installed near and to the south of PVDS.All have problems,but the
most reliable is the HDPE (solid thick wall spin welded polyethylene
pipe).
-Graded swales help keep runoff from ponding and entering the landfill
becoming ground water.
17.PHOTO -Y,ROUND P1PE SYSTEM
18.PHOTOS -Corrugated Metal Pipe
19.TODAY
-The photo shows the existing condition of the \I,round pipe system in
Portuguese Bend.
20.CORRUGATED ADS PIPE -Photo
21.HDPE (solid thick wall spin welded polyethylene pipe)-Photo
22.STORM DRAINS
Photos of several installations of various materials within the landslide
23.KLONDIKE LANDSLIDE PREVIOUS MITIGATION MEASURES
-Pipe installed in Canyon to collect seepage
-Road fill was removed in Canyon to facilitate drainage
-On going grading
-Klondike Stonn Drain installed under PVDS through community to
beach
-Dewatering well installed
-Sewer System installed
SLIDES 24 THROUGH 49
NOTES TO ACCOMPANY THE PRESENTATION OF:
Rainfall,Groundwater and Slow Moving (Creepy)Landslides of
Portuguese Bend Area
Robert Douglas,
Abalolle COI'e Lalldslide Abatemellt District (ACLAD)alld
Professor Emeritus,Ulliversity ofSouthem Califomia
24.TITLE SLIDE (pP slides are shown in red)
This portion ofthe presentation will introduce the landslides of the Portuguese Bend area
and talk about the connection between rainfall,groundwater and slow moving (creepy)
landslides.
The presentations today are intended for the members ofthe City Council,City Staff and
interested members of the community.We have endeavored to keep the technical jargon to
a minimum and to make our remarks as understandable as possible.We encourage
questions at the end of each presentation and will have a general question session at the end
of the workshop.
25.STATE LANDSLIDE MAP
Shown here is a portion of the State of Calif.Division of Geology's map of active and
inactive landslides on the PV peninsula.This view shows the southern flank of the
peninsula and the landslides located between San Pedro and Pt.Vicente.You'll have to
agree that what geologists call "slope failures",i.e.landslides,are a significant feature of the
area and you could say that we live in "landslide country".Landslides are as common as
sagebrush,acacia and peacocks.Not identified are numerous small inactive landslides and
clifffailures,especially the west of Abalone Cove.
In the Portuguese Bend area we find:
1.Ancient Altamira landslide (>200,000 year old;possihly 500,000 years old).Now
"inactive"although portions are undergoing extremely slow movement
2.Portuguese Bend Landslide:reactivated in 1956,it has never stopped moving.
3.Abalone Cove landslide:reactivated in 1978 although geological evidence points
to movement in the past.
4.Klondike Canyon and Beach landslides;Klondike shows movement since about
1980
5.Flying Triangle landslide:mostly located in Rolling Hills it began to move in the
1970s
These landslides have many features in common and are active mass movements with
velocities of 0.01 feet/year to several feet/year.I prefer to call them "Creepy"landslides.As
we all know,they can cause severe damage to houses and infrastructure.They also can be
precursors to sudden,catastrophic slope failures.
26.STATE LANDSLIDE MAP WITH A MAP OF THE AREA IN I930S
The insert shows the Portuguese Bend area as mapped by geologists in the 1930s.Note that
none of the currently active landslides were active then but began to move with the advent
of development in the area.It strongly suggests that early septic tank systems and lack of
storm water drains contributed to their reactivation.
27.LANDSLIDE BASICS
Shown is a cartoon of a landslide similar to the Abalone Cove landslide with the terms that
geologists use to describe slope failures.
28.CROSS-SECTION OF ABALONE COVE LANDSLIDE (ACL)CIRCA 1981
The cross section of ACL illustrates the state of understanding around 1981,about the time
that the first dewatering wells were installed.It was believed that the landslide was a single
layer of rock and debris sliding on a layer of bentonite clay called the Portuguese Tuff.
29.CROSS SECTION OF ACL AS CURRENTLY UNDERSTOOD
Additional boreholes and the installation of special instruments to detect movement at
depth have greatly changed our understanding ofthe landslide.It is now know to consist of
two,possibly three separate landslide masses superimposed on one anotber.There are at
least three slip zones,at about 100,130 and 170 feet and possibly deeper.Movement in the
shallow layer is most directly related to annual rainfall while deeper movement is controlled
by groundwater.
30.WHY ARE THERE SO MAY LANDSLIDES?(in the PV peninsula)
Although many factors can contribute to slope failure,the landslides in PV are basically due
to four main reasons:
a.geology-beds of the Altamira Shale dips seaward at 20-30"
b.composition of the beds in the Altamira Shale.These shale's contain abundant
volcanic ash which over geologic time breaks down into bentonite and e1ay.
These beds are structurally weak and have little internal strength,especially
when wet.Nearly all of the PV landslides fail (slip zone)in beds of bentonite
andlor e1ay
31.SEA CLIFF EROSION AND GROUNDWATER
c.sea cliff erosion-loss oflateral sUpport to dipping strata
Note:despite hundreds of feet of movement in the PBL since 1956,the position of
the shoreline is in approximately the same location as in the 1950s.Typical sea
cliff erosion·rates in PV arc measured in inches to feet/year
d.ground waler-the Activator.Groundwater is the "uncontrolled"variable
Landslide remediation is all about controlling the development and movement
of groundwater.
32.WHAT DOES GROUNDWATER DO?
The build-up of groundwater in the subsurface docs three things:
a.It decreases the strength of the clay and bentonite layers.These beds which
range form a few inches to several tens of feet thiek,beeome what geologists call
"shear zones",meaning they arc weak layers that arc prone to slide when pore-
water pressure and gravity arc applied.
b.adds weight which translates to increased pressure at depth
c.due to the above,the pore-water pressure increases and causes shear zones to fail.
33.RAINFALL TO GROUNDWATER
To understand GW,let's examine the drainage basins in the Portuguese Bend slide area
34.DRAINAGE BASINS IN THE LANDSLIDE
Oblique aerial photo (1931)of the landslide area with the major canyons and drainage
basins labeled ..Note that movement of the Portuguese Bend landslide plus grading
undertaken for remediation purposes have destroyed tbe lower reaches of tbe Portuguese
and Paintbrusb Canyons.Storm water discharge from these canyons now flows directly
into the head of the Portuguese Bend landslide.
35.SOURCES OF GROUNDWATER
Canyons are the MAJOR SOURCE OF GW RECHARGE.Studies by ACLAD and graduate
students from USC have sbown tbat 50-75%of the rain water discharge in the canyons
actually infiltrates into tbe floor of the canyons and recbarges tbe groundwater.The
infiltration is greatest in the area where fractures cross the canyons.Typically 1-18%of the
discharge actually exits the canyons into tbe ocean.In contrast,in the open fields only
about 15%ofthe rain water infiltrates to become groundwater.
36.SOURCES OF GROUNDWATER
Fractures of all sorts and sizes arc conduits that allow tbe rapid infiltration of rainwater
into the ground.Of particular concern arc the factures within the landslides that allow for
groundwater to pass deep into the landslide mass,even to the slip zone.
37.SUMMARY CARTOON
Geology,sea cliff erosion and gravity create tbe conditions for slope failure and
groundwater is the activator.These conditions create slow,continuously moving landslides.
Rainwater controls the formation of groundwater and while these slides slow down during
droughts,they probably never completely bait.
38.REMOVING GROUNDWATER:DEWATERING WELLS
39.WELLS DRILLED FOR VARlOUS PURPOSES,1980 TO 1996
Over the past 30 years several hundred wells bave been drilled in tbe area,most of which
were completed by 1996.About an equal number were drilled as dewatering wells as for
other purposes.Most of the wells located in the Portuguese Bend landslide were shut down
or destroyed by landslide movement by 2000.
40.PRODUCTION AND MONITORING WELLS 2012
Shown here are the production and monitoring wells operated by ACLAD and the six
production wells left in the PBL.The six wells in the PBL average about 12 kgal/d except
duriug the high rainfall winter of 2004-2005 in which they produced over 20 kgalld.
Beginning in 2009,ACLAD has begun installing levelogger instruments in monitoring wells
to automatically measure groundwater elevations.They have provided significant insight
into the build-up of groundwater following rain storms.
41.PRODUCTION AND MONITORING WELLS IN ACLAD
Currently ACLAD wells are producing about 200,000 gal/day,typical for the low rainfall
years of the 2000s.The total varies from year to year for several reasons,the most
important being annual rainfall.
42.RAINFALL AND WELL PRODUCTION IN ACL.
Well production is related to the annual rainfall.
We use several measures to evaluate the effectiveness of the dewatering weUs.
I.Observations of movement (residence in the ACL tells us immediately about any distress
to the houses due to movement.)
2.INPUT-OUTPUT WATER BUDGETS.These simple models calculate how much water
is removed compared to the amount of groundwater produced by rainfall.The analyses
indicate that we remove between 78 %to 92%of the annual groundwater recharge
depending upon the amount of rainfall (Wet or Dry year).
43.MONITORING LANDSLIDE MOVEMENT:GPS NETWORK
44.GPS NETWORK
Shown here is the distribution of GPS stations that are read each year,the results from
which we use to monitor the movement of the four landslides.The GPS system measures
actual movement from which we can calculate rates of movement for each slide.
45.CUMULATIVE HORIZONTAL DISPLACEMENT 1994-2011
Contour map of the cumulative horitzonal displacement in the area based on GPS
measurements since 1994 (date of GPS network).Intervals are in feet.Note that the 12
inch contour (red line)very closely outlines the two active landslides.Most of the Abalone
Cove and western portion of Portuguese Bend landslides area have undergone slow rates of
movement,typically measured in hundredths to tenths offeet per year.The exception is the
eastern portion of the Portuguese Bend landslide,when stations just north of-PVDS have
moved more than 70 feet.Actually the highest velocities have occurred in the eastern toe of
the landslide but the loss of stations due to movement prevents an accurate assessment.The
Klondike Canyon landslide has experienced very slow rates of movement.
46.TOTAL DISPLACEMENT OF THE LANDSLIDES
Since the reactivation of the Portuguese Bend landslide,the head area has moved between
500 and 600 feet.A house,originally located on Narcissa Dr.is now 545 feet,SW of its
original location.The toe are is more difficult to evaluate because of the loss of survey
points due to movement.Based on a comparison oftopographic landmarks,between 800
and 900 feet of displacement has occurred since 1956.
Movement in the Abalone Cove landslide is much more modest.Since is began moving in
1978,the toe has moved about 30 feet while movement at the head is about 9 feet.The
differential rates of movement between the head and toe is typical and reflects the higher
groundwater levels and pore-water pressure experienced near the toe.
47.MOVEMENT AND RAINFALL
This slide illustrates the connection between rainfall and movement in the Abalone Cove
landslide but the relationship is the same for the other landslides.Plotted in the upper
graph is the annual rate of movement at AB04,at the toe of the landslide,and annual
rainfall (shown as blue columns)as measured at the Crest Road station.
The same data are illustrated in the graph below for AB04 and AB07.Note that for annual
rainfall totals of less than about 15 inches,the rates of movement are low and the data
scattered.However,as rainfall increases to greater than 20 inches/year,the rates of
movement rapidly increase.It is at this level that the dewatering wells fall behind the rate
at which groundwater is added to the system.
48.MOVEMENT IN THE PORTUGUESE BEND LANDSLIDE
Plotted here are the results of the central and eastern GPS stations in PBL,areas which
have the highest rates of movement.The two peaks coincide with the EI Nino years of 1997-
98 and 2004-05 which had exceptionally height rainfall.Since the rains of the 2005 winter,
movement across the landslide have decreased considerahly.
49.WHAT HAVE WE LEARNED?
a.The landslides of the Portuguese Bend area are old features that have reactivated
with development of the area.
b.They are the result of local geology (beds that dip towards the ocean,
impermeable layers of clay and bentonite),sea cliff erosion and elevated pore-
water pressure at depth driven by the build-up of groundwater.
c.The landslides are slow,continuously moving (creepy)mass movements with
velocities of 0.01 to several feetJyear.
d.Rates of movement are largely controlled by annual rainfall.
e.Controlling storm water runoff and removal of groundwater are the keys to
remediation.
50.KLONDIKE CANYON AND BEACH CLUB LANDSLIDES
51.PHOTO -Klondike Canyon Landslide Photo 1931
52.PHOTO -Landslide Areas 1979
53.PHOTOS -Landslide evidence in roadway on Dauntless and Exultant Drives
54.PHOTO -Head oflandslide
55.PHOTO -Inclinometer and well locations
56.DIAGRAM -How an inclinometer works
57.PHOTO -Artesian flow,1981
58.PHOTO -Landslide displacement
59.PHOTO -Paseo del Mar
60.PHOTO -Paseo del Mar
61.STAFF RECOMMENDATIONS
- A Topographic Survey of the landslide area would provide infonnation
needed by the geologist to detennine where mitigation efforts like surface
treatments to minimize ground water penetration into the landslide would be
most beneficial.
62.RECOMMENDATIONS
-Line portions of Altimira Canyon by covering critical fracture zoneS to minimize
runoff from entering the landslide.
-Dewatering Wells remove ground water which can slow the movement of the
landslide.Rehabilitate the Abalone Cove Wells;Rehabilitate the Portuguese
Bend wells;Drill a new Portuguese Bend well on Crenshaw extension.
-Instrument Wells monitor groundwater and slide movement.Install Piezometers
and inclinometers.
63.RECOMMENDATIONS
-Continuous Monitoring GPS and Increasing the Monitoring Frequency would
provide additional data to aid staff in making decisions.
64.RECOMMENDA TIONS
-Collect the surface runoff before it enters the landslide and deliver it to the
ocean.This activity is considered the highest priority work in the landslide,
removing runoff before it enters the landslide lessens the need for dewatering
(removing water after it is in the landslide and helps slow the movement of the
landslide.
-Adjust drainage system at the ski jump to facilitate runoff water removal and
minimize runoff from entering the landslide
65.RECOMMENDA TIONS
-Gabion improvements in Klondike Canyon will help remove ground water
before it enters the head of the landslide.A project is being considered by the
Klondike Hazard Abatement Board which will accomplish this goal.
-Collect the surface runoff at the Beachclub Landslide fill area near PVDS before
it enters the landslide.
66.-71.RECOMMENDA TlONS
-Topographic Survey;Conventional Topo Survey can be very expensive;LAR-
lAC will provide topo infomlation at 2'intervals and new aerial photographs of
the entire City.Additionally,data available through LAR-IAC can include
building outlines,impervious surfaces,flood plane and digital terrain models.
72.CONCLUSIONS
Table 1 General features of the major landslides on the Palos
Verdes Peninsula (Data complied by Scott Kerwin and Robert Douglas)
Landslide Age (yrs)Thickness Area Displacement Type Status
(feet)(acres)(feet)
Ancient >200,000 Slow inactive
Altamira ,50 to>150 >1300 unk,moving
Complex Possibly
700,000
Portuguese -900 ft since Slow active
Bend *1956 50-80 260 1956 moving
Abalone -30 ft since Slow active
Cove *1978 70-200 80 1978 moving
Flying Slow active
Triangle Late >50 -70 moving
1970s >30
Klondike v.slow active
Canyon *1982 >50 >50 >10s moving
South
Shores >16,200 >50 >150 unk.inactive
Table derived from many sources,including Haydon (2007),Ehlig (1986;
1992),Kerwin (1982),Siossen,et al.(1987),Leighton,et al (1989).
*These landslides are reactivated parts of the Ancient Altamira landslide;
Age is the date of renewed movement.
.30
Table 1 General features of the major landslides on the Palos Verdes Peninsula
Landslide Age (yrs)Thickness Area Displacement Type Status
(feet)(acres)(feet)
Ancient >200,000,Slow inactive
Altamira Possibly 50 to>150 >1300 unk,moving
Complex 700,000
Portuguese -900 ft since Slow active
Bend '1956 80-250 260 1956 moving
Abalone -30 ft since Slow active
Cove '1978 70-200 80 1978 moving
Flying Slow active
Triangle '1978 150-200 90 >30 moving
Klondike v.slow active
Canyon '1979 150-200 50 -1 to 2 ft moving
since 1956
Beach Several inactive
Club 1,000 (?)20-50 -20 unk.
South
Shores >16,200 >50 >150 unk.inactive
Table derived from many sources,including Haydon (2007),Ehlig (1986;1992),Kerwin (1982),
Siosson,et al.(1987),Leighton,et al (1989).
'These landslides are reactivated parts of the Ancient Altamira Landslide Complex;Age is the
date of renewed movement.
.3/
ACLAD Misc.memo,2001:rev.2012
Some Thoughts about Landslides
Robert Douglas,Chairman,Board of Directors,
Abalone Cove Landslide Abatement District (A State of California Geohazard district)
1.Geology,sea cliff erosion and gravity are the causes and groundwater is the
activator of slope failures (large and small).Pore-water pressure is the most
important among many factors in controlling landslide movement.
2.The Palos Verdes Peninsula is "landslide"country,especially the southem
flank that faces the ocean.The strata which compose the flank dip seaward and
wave erosion carves sea cliffs which remove lateral support from the dipping
strata.Slope failures of all sizes and types occur here,ranging from soil creep
on steep hillsides to slumps in canyon walls to slides in the sea cliff to large
translational block-slides such as the Portuguese Bend landslide.The
landslides in the Portuguese Bend area are all "slow-moving"with rates of
movement that range from extremely slow (barely detectable with instruments;
<0.01 ftIyr)to fast (several ftIyr).It is possible that much of the Ancient Altamira
Landslide complex is failing at extremely slow rates of movement.
3.Old aerial photos and geological maps clearly document the wide extent of
slope failure across the entire south flank of the Palos Verdes peninsula (from
Point Vicente to San Pedro)prior to the development starting in the 1950s.Some
of these features are located in areas that are now developed and depending
upon the size and type and how they were remediated at the time,these failures
can pose potential future problems.Any of these many slope failures can be
reactivated.
4.The collective experience of the past 50 years is that the build-up of pore-
water pressure from groundwater is the key factor in most landslides.While
many factors contribute to slope instability,such as the slope angle,nature of the
strata,the dip of the beds,presence of clays,etc.,without the infiltration of water,
most would not fail.Controlling groundwater is the most effective abatement tool
for landslides,either by preventing the infiltration of rainwater or the removal of
groundwater by pumping.
5.A corollary to controlling groundwater is the effective control of the source of
most groundwater,rainwater discharge.Well designed and maintained storm
drain systems are essential in conveying rainwater away from areas prone to
slope failure.In a sense,they are the first line of defense against landslides.
6.Questions about development in areas of ancient landslides are best resolved
by placing instruments in deep boreholes that reveal pore-water pressure at
depth,the nature of the slide plane and whether very slow movement is occurring
at depth that is not manifest at the surface.It should be remembered that
ACLAD Misc.memo,2001:rev.2012
reactivation of the landslides in the Portuguese Bend area (PBL,ACL,KCL,FTL)
are all related to human activities that led an increase in groundwater.
7.Landslides are as much a part of the natural environment in the City of
Rancho Palos Verdes as coastal sage and cactus and must be dealt with on a
continuous,proactive basis.Once reactivated,landslides are very difficult and
expense to re-stabilize.Geohazard districts are an effective approach in helping
Cities to deal with slope failure problems and more districts should be created in
Rancho Palos Verdes along with a city-wide commission or panel to coordinate
abatement and remediation efforts.
ACLAD 9101;rev.6/05;9/09
Abalone Cove Landslide Abatement District
An ACLAD Information Sheet:
1.What is ACLAD?
The Abalone Cove Landslide Abatement District (ACLAD)is a State of California
"geologic hazard abatement district"created by special legislation passed by the
California Legislature in 1980 for the "purposes of prevention,mitigation,abatement or
control"of the Abalone Cove landslide.It was the first geohazard abatement district
created in the state.The District is governed by five elected Directors,which serve for a
term of four years.Under the Improvement Act of 1911,the District may assess
properties benefrting from the mitigation or abatement efforts for the cost of the
improvements.
2.Background
In September 1978,the City Council of Rancho Palos Verdes was presented with
information regarding cracks and movement along Palos Verdes Drive South and
Narcissa Drive that indicated a new landslide (actually a reactivation of an old landslide)
that was named the Abalone Cove landslide.The Council immediately established a
building moratorium in the area and authorized the first in a series of geological
investigations to define the problem and identify potential solutions.
During March,1979,proposed legislation designed to permit the creation of a
Geological Hazard Abatement District was forwarded to Senator Beverly and
Assemblywoman Ryan for introduction as an emergency measure.At the same time,
the Council hired Robert Stone and Associates to perform a comprehensive
hydrogeologic investigation to determine the feasibility of dewatering the landslide.Later
that year,the preliminary borehole tests favored installing a series of dewatering wells.
Because legislation for the formation of an assessment district was pending in
the State Legislature,the City (1)approved that residents form a non-profit corporation
to undertake appropriate remedial action in the interim and (2)circulated a petition
amongst the owners of real property requesting that the city commence the necessary
steps to create the Geologic Abatement District.The necessary 10%+of property
owners signed the petition.
On January 1,1980,Senate Bill 1195 authorizing the formation of a Geologic
Hazard Abatement District become law as Division 17 of the Public Resources Code.
1
ACLAD 9/01;rev.6105;9/09
The City Council immediately adopted Resolution 80-3,creating the Abalone Cove
Landslide Abatement District (ACLAD).
During the interim period,property owners within greater Abalone Cove area
voluntarily financed the drilling of six dewatering wells and began pumping operations by
mid-April,1980.In November,1980,following the formation of ACLAD,the property
owners transferred the wells to the District.
The first directors of ACLAD included Skip Warner,Jim Stewart,Harriet Medve,
John Tretheway and Councilman Ken Dyda.
3.Who are the current Directors and staff?
The Directors must be the owners of real property within the District and are
elected to a term of four years.Board members are volunteers who donate their time
and energy to the community.
The current Board is composed of Tim Kelly,Michael Barth,Charles Parks,Ron
Dragoo,and Robert Douglas (chairman).Sandy Marshall is the District Clerk and
Daphne Clark the Manager of Well Operations.
4.What does ACLAD do?
ACLAD is broadly responsible for abatement efforts to prevent movement of the
Abalone Cove landslide.To do this,the district currently maintains 17 dewatering wells,
monitors groundwater elevation in the greater Abalone Cove area,monitors the Global
Positioning System (GPS)stations measurements for evidence of possible slide
movement,conducts geological studies as needed and works with the City of RPV to
maintain the storm drain culverts and other improvements related to landslide
abatement.Due to the dewatering wells,the groundwater table within and immediately
upslope of the landslide has been significantly lowered.This has reduced the movement
to a creep (millimeters/year)and increased the stability of the Abalone Cove Landslide.
5.What are future plans for the ACLAD?
All of the geological investigations in the past decade,including the one by
Cotton,Shires and Associates have recommended that additional dewatering wells be
drilled in the area upslope of existing wells.Wells devoted exclusively to monitoring the
elevation of the groundwater table are also need.At the same time,many of the older
wells drilled in 1980-81 are in need of major maintenance,including re-drilling and
2
.95
ACLAD 9/01;rev.6/05;9/09
deepening in some cases.New projects,such as additional wells,required the District
to conduct a review process which includes consultation with the City geologist,public
hearings and an environmental impact survey.Each project review requires several
months to complete.
ALL MEMBERS OF THE COMMUNITY ARE WELCOME AND INVITED TO ATTEND
ACLAD MEETINGS ON THE SECOND WEDNESDAY OF EACH MONTH.
3
3(,
TO:
FROM:
DATE:
SUBJECT:
HONORABLE MA VOR &CITY COUNCIL MEMBERS
CITY CLERK
JULV 30,2012
ADDITIONS/REVISIONS AND AMENDMENTS TO
AGENDA
Attached are revisions/additions and/or amendments to the agenda material received
through Monday afternoon for the Tuesday,July 31,2012 City Council meeting:
Item No.
B
Respectfully submitted,
Description of Material
Email from Don Reeves
W:\AGENDA\2012 Additions Revisions 10 agenda&20120730 additions revisions to agenda through Monday afternoon.doc
From:Don [dreeves895@aol.com]
Sent:Saturday,July 28,2012 3:48 PM
To:psilva@tbrnews.com
Cc:simon@gazettes.com; mscott@pvnews.com;cc@rpv.com
SUbject:SDUF Article
Storm Drain User Fee
My first reaction to your article ("Despite funding shortfall,RPV won't increase storm drain fee")on 7/26
was disgust and anger but then I realized that your staff writer (apparently you)is really at the mercy of
staff members.The SDUF has a long history of misdirection that brought about a very narrow approval
and then another vote in which 100%of the property owners were allowed to impose the fee/tax on 80%
of their neighbors.The good news was that the CC in fear of losing it allowed a successful vote to impose
a sunset clause.
What shortfall is your writer referring to?The WQ/FP fund currently has -$0.49M in "fund balance"which will
still be -$0.47M by 6/30/13.But,that is only part of the story.The General Fund reserves are -$10.7M and
the CIP reserves are -$8.2M and will increase to -$11.4M by 6/30/13;this reserve is only part of the current
-$11.5M in CC Restricted reserves.San Ramon Canyon was always brought up by previous "tax and
spend"councils (see names below)to justify more taxes but with almost $10M in state funds available,it
is not unreasonable to expect this council to formulate a plan and start the project.Reasonable bond
funding ideas have been suggested and RPV is obviously not suffering a "funding shortfall."Our
Revenues generally exceed our Expenditures by $5-6M every year.It would have been more reasonable
to "zero out"the SDUF for one year.
There is more to the story.Some of us have tried repeatedly to get a status and plan for the storm drain
projects.The original proposal for this program was very good but was distorted in establishing the fee;it is
interesting reading.In 2005 we had a near 1OO-year storm system that caused one problem (aggravated or
even caused by poor maintenance)but it certainly created a fear factor in passing this fee/tax.The Long,
Stern,Clark,Wolowicz council also said Terranea would probably fail and the finance director would never
include potential TOT in any analysis -usually resulting in a 5-year "going out of business"forecast.If you
look at the budget you will see that the TOT is very healthy;as an aside,we defeated MR.Clark's attempt to
increase the TOT rate t012%as unnecessary and unwise.
RPV continues to fund things like the PVIC that was promised to be self supporting,the Preserve at a level
far above what was promised,Channel 33 and other items that are "wants"not "needs"when compared to
infrastructure and public safety.What are our priorities?That is the question that should have been asked
Mr.Knight.
This is not a "letter to the editor"but rather a suggestion that when staff or anyone else makes the kind of
statement contained in this article that they be asked to provide some quantitative data.
Sincerely,
Don Reeves
RPV
dreeves895@aol.com
7/30/2012 b.