CC SR 20230404 D - Hawthorne Blvd Sinkhole Update
CITY COUNCIL MEETING DATE: 04/04/2023
AGENDA REPORT AGENDA HEADING: Consent Calendar
AGENDA TITLE:
Consideration and possible action to reaffirm continuing emergency repair work for the
storm sewer drainpipe and roadway at Hawthorne Boulevard near Seamount
Drive/Eddinghill Drive.
RECOMMENDED COUNCIL ACTION:
(1) Reaffirm, by a four-fifths vote, there is a need to continue the emergency repair
work identified by Council-adopted Resolution No. 2023-07 on February 21, 2023,
finding an emergency exists requiring immediate repairs to the storm sewer
drainpipe and roadway at Hawthorne Boulevard near Seamount Drive/Eddinghill
Drive; and
(2) Direct the City Clerk to affirm 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 $480,000 was appropriated by the City Council on
February 21, 2023.
Amount Budgeted: N/A
Additional Appropriation: N/A
Account Number(s): N/A
ORIGINATED BY: Ron Dragoo, PE, Principal Engineer
REVIEWED BY: Ramzi Awwad, Public Works Director
APPROVED BY: Ara Mihranian, AICP, City Manager
ATTACHED SUPPORTING DOCUMENTS:
A. March 21, 2023 staff report
BACKGROUND:
On February 21, 2023, pursuant to Public Contracts Code §§ 1102 and 22050, the City
Council adopted Resolution No. 2023-07 finding that an emergency exists requiring
immediate action to repair the storm sewer drainpipe and sinkhole along the roadway on
Hawthorne Boulevard near Seamount Drive/Eddinghill Drive that occurred on January 27,
2023.
1
On March 21, 2023, the City Council reaffirmed that there is a need to continue the
emergency repair work (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, by a four-fifths vote, there is a need to continue to remediate the emergency until
the authorized emergency repairs have been completed. Accordingly, because the
remediation 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 remediation are
completed.
Current Status
As of the date of publication of this staff report , the construction contractor, Clarke
Construction, Inc. (Clarke), completed the installation of steel plates over the storm drain
pipe on both the northbound and southbound lanes of Hawthorne Boulevard to protect
against the potential for additional sinkholes. Although progress has been hampered by
rain, the remaining pipe in the sinkhole has been removed so that the area can be used
to install a replacement pipe under Hawthorne Boulevard using trenchless methods.
The next major activity will be forming a new flowline for the future replacement pipe,
followed by installation of the replacement pipe.
CONCLUSION:
The effects of the sinkhole continue to require immediate repair work, which is ongoing.
Therefore, Staff recommends affirming, by a four-fifths vote, that there is a need to
continue to remediate the emergency identified by City Council-adopted Resolution No.
2023-07 on February 21, 2023.
ALTERNATIVES:
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.
2