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County Administrator's Report 10. 22.
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| BCC Regular Meeting |
Budget & Finance Consent |
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| RECOMMENDATION: |
Recommendation Concerning a Change Order to BKW, Inc., for the Shadow Grove Subdivision Drainage Improvements Project - Joy D. Blackmon, P.E., Public Works Department Director
That the Board approve and authorize the County Administrator to execute the following Change Order to BKW, Inc. for the Shadow Grove Subdivision Drainage Improvement Project:
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Department: |
Public Works |
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Division: |
Engineering/Infrastructure Division |
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Type: |
Addition |
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Amount: |
$1,314,800.88 |
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Vendor: |
BKW, Inc. |
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Project Name: |
Shadow Grove Subdivision Drainage Improvements |
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Contract: |
PD 15-16.099 |
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PO#: |
170793 |
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CO#: |
2 |
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Original Contract Award: |
$1,071,051.81 |
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Cumulative Amount of Change Orders Through this CO: |
$1,348,902.70 |
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New Contract Total: |
$2,419,954.51 |
[Funding Source: Fund 112, “Disaster Recovery Fund," Cost Center 330493, Object Code 54612/56301, Project #ESDPW09] |
| BACKGROUND: |
Meeting in regular session on November 3, 2016, the Board approved Contract PD 15-16.099, Shadow Grove Subdivision Drainage Improvements. Shadow Grove Subdivision received significant damage from the April 2014 Storm Event that impacted Escambia County, and was subsequently identified as a FEMA-eligible project. The Project Worksheet (PW) was prepared and submitted by FEMA, and their initial guidance by the PW author on this project was to minimize our repair efforts and costs. There was no Hazard Mitigation Proposal (HMP) prepared by the PW author.
Currently, the Shadow Grove project is under construction and is approximately 60% complete. Immediately prior to construction, it became apparent that the PW did not adequately cover the scope of the damage. A revision to the PW was submitted and accepted by FEMA. As construction continued, the PW scope increased and an HMP became necessary.
Escambia County has experienced excessive rainfall throughout May, June, July and August of 2017. Unexpected erosion, high groundwater issues, and unstable soil conditions within and surrounding the project area has made construction difficult within the middle stormwater management area. This is continuing to delay construction, and is creating unsafe conditions for the contractor and adjacent property owners. In July, a voucher was issued for geotechnical services to evaluate the groundwater and soil conditions to provide recommendations so construction could safely continue.
It was determined that a perimeter sheet pile type wall would be necessary and crucial to protect surrounding properties, to complete construction safely, and to deliver a successful and sustainable repair result. The 200-foot modular-type cantilever retaining wall originally specified would no longer be effectively long enough or deemed suitable for the soils and groundwater conditions.
Structural design for a perimeter sheet pile retaining wall for the middle pond is underway; the design and construction costs associated with the sheet pile retaining wall system will be submitted to FEMA for reimbursement. Mr. Jim Riddell, the Florida Department of Emergency Management (FDEM) representative, met with staff on August 17, 2017, and provided guidance on how to proceed with a PW revision to reflect the required sheet pile design change and installation, and suggestions for an HMP to be written for the construction changes needed.
The original construction cost was $1,071,051.81. Change Order #1, in the amount of $34,101.82, has already been approved, bringing the total current construction cost to $1,105,153.63. This Change Order, #2, includes additional unit price quantities due to a utility conflict. The expected increase for this additional work is $1,314,800.88.
The FEMA deadline for this project is May 4, 2018. |
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| BUDGETARY IMPACT: |
| Funds for this Change Order are available in Fund 112 “Disaster Recovery Fund”, Cost Center 330493, Object Code 54612/56301, Project #ESDPW09. |
| LEGAL CONSIDERATIONS/SIGN-OFF: |
| N/A |
| PERSONNEL: |
| N/A |
| POLICY/REQUIREMENT FOR BOARD ACTION: |
| This recommendation is in compliance with the provisions of the Code of Ordinances of Escambia County, Florida, Chapter 46, Finance Article II, Purchases and Contracts. |
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| IMPLEMENTATION/COORDINATION: |
| Upon approval of this recommendation, a Change Order will be transmitted to the Office of Purchasing for processing. |
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