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CC - (1) Award of Construction Contract to STL , as the Lowest Responsive and Responsible Bidder, in the Amount of $197,200, for the Construction of the Transfer Station Rain Garden Project, Phase II, PZ-948, and On-Site Drainage Repair; and (2) Authorization for the Public Works Director/City Engineer to Approve Change Orders, in an Amount Not-to-Exceed $19,700.
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Meeting Date: November 27, 2017
Contact Person/Dept: Lee Torres
Phone Number: (310) 253-6457
Fiscal Impact: Yes [X] No [] General Fund: Yes [X] No []
Public Hearing: [] Action Item: [X] Attachments: []
Commission Action Required: Yes [] No [X] Date:
Public Notification: (E-Mail) Meetings and Agendas - City Council (11/22/17);
Department Approval: Charles D. Herbertson 11/03/17
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RECOMMENDATION
Staff recommends the City Council (1) approve the award of a construction contract to STL Landscaping, Inc., as the lowest responsive and responsible bidder, in the amount of $197,200, for the construction of the Transfer Station Rain Garden Project, Phase II, PZ-948, and On-Site Drainage Repair; and (2) authorize the Public Works Director/City Engineer to approve Change Orders, for an amount not-to-exceed $19,700, if necessary, for construction.
BACKGROUND
On September 11, 2017, City Council approved the final plans and specifications and authorized publication of a notice of inviting bids for the Transfer Station Rain Garden Project, Phase II, PZ-948.
The Public Works Environmental Programs & Operations Transfer Station Facility (Facility) functions as a transfer facility for recyclables, municipal solid waste, and organics waste collected locally from residential, commercial, and industrial properties within Culver City and portions of the City of Los Angeles. The refuse and recyclables are transported from the Facility to landfills and recycling facilities and the organic material is sent to a composting facility.
The Facility’s site is nearly 100% impervious. Approximately 80% of the site is graded toward two trench drains with filtration devices that discharge directly into Ballona Creek. The remaining 20% of the site drains towards the front property into previously constructed rain gardens along the parkway on the north side of Jefferson Boulevard.
Due to the Facility’s function and daily operations, pollutants such as trash, oil & grease, bacteria, iron, copper, lead, and zinc may be found on site. The existing trench drain filtration devices are high maintenance and are easily saturated, leading to a limited effective life cycle. Furthermore, half of the Facility’s roof drainage currently discharges directly towards Jefferson Blvd, un-treated.
Therefore, in order to maintain compliance with the State’s Industrial General Permit (IGP) and the City’s NPDES MS4 Permit, the City is in need of more viable structural Best Management Practices (BMPs) that can treat/retain the first 1.1-inch rainfall (equivalent to the 85th percentile, 24-hour rain event) of all potential pollutants from the site, and to promote the City’s storm water pollution prevention program.
Staff proposed a two-phased stormwater project to meet compliance, Stormwater Diversion Project, Phase I and Rain Garden Project, Phase II.
Stormwater Diversion Project, Phase I
On May 30, 2017, City Council approved the construction award to Metro Builders and Engineers Group for the Stormwater Diversion Project, Phase I. The construction of the Stormwater Diversion Project is currently underway and scheduled to be completed by December, 2017.
Rain Garden Project, Phase II
Currently, the southern half of the Facility’s roof run-off discharges directly to Jefferson Boulevard untreated. This project includes the construction of rain gardens with above ground bio-filtration systems along the property’s frontage to divert and capture run-off from approximately 7,000 sq. ft. of roof area. The proposed rain garden will have a design volume to accept, filter and infiltrate runoff from the Facility’s roof. Furthermore, cisterns with a total capacity of approximately 1,400 gallons will be installed for harvesting additional runoff to be used to supply the proposed drip irrigation system.
DISCUSSION
On September 28, 2017, the City Clerk publicly opened the bids for this Project. One (1) contractor responded with the following bid amount:
CONTRACTOR BASE BID AMOUNT
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1 |
STL Landscape, Inc., Los Angeles, CA |
$169,850 |
Staff has thoroughly reviewed the bid documents provided by STL Landscaping, Inc. (STL), and determined that the bid is responsive and complete.
STL’s bid bond, contractor’s license, and worker’s compensation insurance were reviewed and determined to meet City requirements. STL has completed similar improvement projects and has experience in construction of public agency facilities.
In March, 2014, STL completed a project for Culver City, Public Works Building Rain Garden Project. STL has also completed similar projects for the City of Laguna Woods, County of Los Angeles, and Caltrans.
Staff also recommends approving an additive bid to repair on-site drainage problems in the amount of $27,350. During heavy rain events, ponding occurs along the main drive aisles. The drainage repair will consist of partially reconstructing sections of the driveway aisle and enlarging the draining inlets.
Construction Support
Construction management, inspection, and material testing services was procured on April 3, 2017 through a competitive Request for Proposal (RFP) process for both the Stormwater Diversion Project, Phase I and Rain Garden Project, Phase II.
RTI Consulting and Ninyo & Moore were the selected consultants from a list of firms pre-approved by the City Council for construction management/inspection services and material testing services on capital improvement projects. For this project phase, the proposed services will be at a not to exceed amount of $30,000 and $8,000, from RTI Consulting and Ninyo & Moore, respectively.
FISCAL ANALYSIS
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Proposed Project Budget |
|
Safe/Clean Water Protection Fund (43480000.730100.PZ948) |
$152,000 |
|
Safe/Clean Water Protection Fund (43480000.730100.PZ497) |
$17,500 |
|
Baldwin Hills Conservancy Prop 1 Grant Fund (42380000.730100.PZ948) |
$56,000 |
|
Transfer Station Improvements, PZ948 (20280000.730100) |
$30,000 |
|
Available Funds |
$255,500 |
|
Estimated Project Expenses |
|
Construction Contract |
$197,200 |
|
10% contingency |
$19,700 |
|
Subtotal |
$216,900 |
|
Construction Management/ Inspection Services |
$30,000 |
|
Geotechnical Material Testing |
$5,000 |
|
Total Estimated Project Expenses |
$251,900 |
ATTACHMENTS
None
MOTION
That the City Council:
1) Award a contract to STL Landscaping Inc., as the lowest responsive and responsible bidder, for the Transfer Station Rain Garden Project,
Phase II, PZ-948 and On-Site Drainage Repair in the amount of, $197,200;
2) Authorize the Public Works Director/City Engineer to approve Change Orders, for an amount not-to-exceed $19,700, if necessary, for construction;
3) Authorize the City Attorney to review/prepare the necessary documents; and
4) Authorize the City Manager to execute such documents on behalf of the City.