CC SR 20250304 H - Landslide Emergency Contract ContinuationCITY COUNCIL MEETING DATE: 03/04/2025
AGENDA REPORT AGENDA HEADING: Consent Calendar
AGENDA TITLE:
Consideration and possible action to reconfirm continuing the emergency justification for
work and emergency contract for the Greater Portuguese Bend-Ancient Altamira
Landslide Emergency Project.
RECOMMENDED COUNCIL ACTION:
(1)Reconfirm, by a four-fifths vote, there is a need to continue the work on the Deep
Vertical Dewatering Emergency Project declared by Council-adopted Resolution
No. 2024-20 on May 7, 2024, finding an emergency exists requiring immediate
action in the Greater Portuguese Bend-Ancient Altamira Landslide Complex to
seek to mitigate the movement of the landslide; and
(2)Direct the City Clerk to confirm the same in the minutes of this City Council
meeting, via Minute Order, reflecting this action.
FISCAL IMPACT: There is no fiscal impact associated with the recommended Council
action as the City Council appropriated a total of $35.1 million in FY
2024-25 for emergency work outside the normal bidding process due
to the emergency declaration as follows:
•$23.9 million for emergency response, boreholes and deep dewatering wells. This
amount also includes the $9.6 million approved on May 7, 2024 (unspent balance
by June 30, 2024 was carried over in FY 2024-25) and $6.1 million on October 1,
2024.
•$4 million for emergency stabilization measures for additional deep dewatering
wells approved on October 1, 2024.
•$4 million for winterization approved on October 1, 2024.
•$1.1 million for operations and maintenance of deep dewatering wells between
January and March 31, 2025, approved on December 17, 2024.
•Approximately $3.9 million of the following Capital Improvement Program (CIP)
projects are deferred to FY 2025-26 as approved on January 21, 2025:
o $0.6 million for Crenshaw Blvd. Rehab;
o $0.6 million for Park Playground Improvements;
o $0.55 million for the Sidewalk Management program;
o $1.7 million for Western Avenue Beautification; and,
o $0.5 million for Altamira Canyon Drainage
•$2 million for operations and maintenance of deep dewatering wells (approximately
$1.5 million from April 1, 2025 through June 30, 2025) and approximately $0.5
million for additional fissure filling approved on January 21, 2025.
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•On February 4, 2025, the City Council affirmed the use of the financial assistance
loan to ACLAD in the amount of $1.6 million approved by the City Council on July
2, 2024 for ACLAD to implement their deep dewatering well plan; and
•$100,000 for in-kind project and construction management services provided by
the City to assist the Abalone Cove Landslide Hazard Abatement District with
implementation of their deep dewatering wells plan. VR
FY 2024-25 Funding Sources $17.9M:
•$10.1 million CIP (Fund 330)
•$3.4 million General Fund
(Fund 101)
•$1.4 million Prop C (Fund 215)
•$2.9 million ARPA (Fund 333)
Additional FY 2024-25 Funding Sources $14.1M approved on October 1, 2024:
•$500,000 ARPA (Fund 333)
•$2.2 million Sup. Hahn Grant
(General Fund - Grant 101)
•$5 million CIP Emergency
Reserves (Fund 330)
•$6.4 million General Fund
Excess Reserves (Fund 101)
Additional FY 2024-25 Funding Source $1.1M approved on December 17, 2024:
•$1.1 million CIP (Fund 330)
Additional FY 2024-25 Funding Source $2M approved on January 21, 2025:
•$2 million CIP (Fund 330)
Additional FY 2024-25 Funding Source $100,000 approved on February 4, 2025:
•$100,000 CIP (Fund 330)
Amount Budgeted: See Fiscal Impact above
Additional Appropriation: N/A
Account Number(s): Funding sources – see Fiscal Impact above VR
ORIGINATED BY: David Copp, Deputy Public Works Director
REVIEWED BY: Ramzi Awwad, Public Works Director
APPROVED BY: Ara Mihranian, AICP, City Manager
ATTACHED SUPPORTING DOCUMENTS:
A.February 18, 2025 City Council Staff Report – Emergency Hydraugers
Contract Continuation
B.January 21, 2025 City Council Staff Report – Consideration and Possible
Action to Fund the Installation of Additional Deep Dewatering Wells in the
Greater Portuguese Bend-Ancient Altamira Landslide Complex
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C.December 17, 2024 City Council Staff Report
D.October 1, 2024 City Council Staff Report
E.August 20, 2024 City Council Staff Report
F.May 7, 2024 City Council Staff Report
BACKGROUND:
On October 3, 2023, the City Council adopted Resolution No. 2023 -47, declaring a state
of local emergency relating to the land movement in the landslide complex. The state of
emergency has been timely renewed and is current.
On May 7, 2024, the City Council extended the Local State of Emergency pursuant to
Resolution No. 2024-20 and approved, among other things, a Public Works Contract with
Malcolm Drilling Inc. (Malcolm) to perform the work of the Portuguese Bend Landslide
Emergency Hydraugers Project (Attachment F).
On August 20, 2024, the City Council approved expanding the scope of the emergency
hydraugers project and considering new alternatives including the installation of deep
vertical dewatering wells (Attachment E).
On October 1, 2024, the City Council approved expanding the scope of work to include
winterization work and the installation of additional vertical deep dewatering wells
(Attachments D).
On December 17, 2024, the City Council approved expanding the scope of work to include
operations and maintenance of the deep dewatering wells through March 31, 2025
(Attachment C).
On January 21, 2025, the City Council approved extending the duration of the operations
and maintenance of the deep dewatering wells work through June 30, 2025 and ongoing
fissure filling (Attachment B).
On February 18, 2025, the City Council approved continuing the emergency justification
for work and emergency contracting for the Greater Portuguese Bend-Ancient Altamira
Landslide Emergency Project (Attachment A).
DISCUSSION:
Pursuant to Public Contract Code § 22050, the City Manager and Director of Public Works
must report to the City Council at its regular meeting the reasons justifying why the
emergency continues to exist and why action outside of the normal bidding process is
necessary to respond to the emergency. Furthermore, Public Contract Code § 22050
states that the City Council shall, at every regularly scheduled meeting , consider and
reaffirm that there is a need to continue to remediate the emergency until the authorized
emergency repairs have been completed. Accordingly, because the work has not yet
been completed, this item is on tonight’s agenda. This item will be placed on each
subsequent agenda until all aspects of the project are completed.
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The current status of the Deep Dewatering Wells program is the following:
• Work is complete for all DDWs as well as the associated test boreholes and monitoring
wells funded by the City Council.
• The total combined water extraction rate of the DDWs is currently at approximately
735 gallons per minute or 1.1 million gallons per day.
• Since the start of the DDW program, approximately 158 million gallons, or 485 acre-
feet of water have been extracted from certain locations around the toe of the
Landslide Complex.
DDW Current Water Extraction Rates as of February 24, 2025
DDW
No. Date Operational
Current Approximate
Water Extraction Rate
(Gallons Per Minute)
Total Water Extraction to Date
Acre-Ft Million Gallons
1 9/13/2024 75 61.4 20.0
2 9/17/2024 100 66.5 21.7
3 9/21/2024 45 59.4 19.4
4 9/21/2024 70 46.3 15.1
5 9/25/2024 100 re-drilled 12/27/24 62.5 20.4
6 9/28/2024 75 re-drilled 12/29/24 51.3 16.7
7 10/15/2024 10 9.8 3.2
8 10/17/2024 80 re-drilled 01/30/25 35.4 11.5
9 10/25/2024 Decommissioned 11/07/24 2.0 0.7
9A 11/16/2024 65 re-drilled 12/29/24 26.0 8.5
10 10/24/2024 110 62.6 20.4
11 12/03/2024 5 1.9 0.6
Totals 735 485 158
All DDWs will continue to be monitored for pinching/shearing, and re-drilling plans will be
developed as needed.
All planned winterization activities are completed. Monitoring of winterized areas will
continue, including assessments after rain events, and adjustments made in preparation
for future rain events, to the extent possible within the current approved budget.
The emergency conditions necessitating the project continue to exist.
CONCLUSION:
The effects of the ongoing land movement continue to be felt in the Greater Portuguese
Bend-Ancient Altamira Landslide Complex. Staff recommends reconfirming that there is
a need to continue to remediate the emergency identified by City Council -adopted
Resolution No. 2024-20 (originally by Resolution No. 2023-47), and reconfirm, by a four-
fifths vote, the need for continuing the work on the Portuguese Bend Landslide
Emergency Project.
ALTERNATIVES:
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In addition to Staff recommendation, the following alternative action is available for the
City Council’s consideration:
1.Take other action or provide direction, as deemed appropriate.
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