MC-0322591_RFQ_Attachment_A_Scope_of_Work.pdf
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- Solicitation number
- MC-0322591
- Issued by
- King County, Spokane City, Washington
About this file
This document is a Scope of Work attachment for a General Contractor/Construction Manager (GC/CM) Preconstruction Service Agreement issued by the Port of Seattle for the Terminal 25 South Habitat Restoration Project (Contract #MC-0322591). The Port of Seattle is seeking preconstruction support services to advance a multi-year environmental remediation and habitat restoration program on a approximately 9-acre upland and aquatic project site located at the vicinity of 2917 East Marginal Way South, Seattle, Washington. The project encompasses two major efforts: an EPA-regulated CERCLA cleanup involving removal and disposal of contaminated materials including in-water sediment, creosote-treated timber piles, wharf remnants, and upland soils; and a Natural Resource Damages (NRD) restoration involving construction of riparian habitat, marsh, intertidal, and shallow subtidal areas designed to support juvenile salmon feeding and rearing. The preconstruction services scope includes project management, design and permitting support, project scheduling and phasing, subcontractor packaging, cost estimating, constructability analysis, logistics planning, safety and quality plan development, and all deliverables through the 100% design milestone. The anticipated schedule indicates a 30% design review in Q1 2027, Maximum Allowable Construction Cost (MACC) establishment in Q2 2028, construction commencement in Q1 2029, and project completion in Q3 2031. The Port and GC/CM Contractor will conduct biweekly meetings to review personnel burn rates and manage the level of effort budget.
The contract includes a Women and Minority Business Enterprise (WMBE) goal of 10% for subcontractor participation. The project site comprises the Port of Seattle's portion of T25 South, which has been identified as part of the East Waterway Operable Unit within the Harbor Island Superfund site. The habitat mitigation bank program underlying this project is intended to generate revenue through the creation, reservation, and sale of mitigation credits while serving as a potential component of future Natural Resource Damages settlement agreements. Major project elements include in-water remedial cleanup (creosote pile removal, sediment dredging, clean material placement), upland remedial cleanup (building foundation excavation, parking pavement removal, contaminated soil excavation, TSCA and NAPL material removal), and habitat restoration (backfill import and placement, grading, shoreline armoring installation, riparian and marsh plantings, and stormwater improvements). The preconstruction services are designed to support the Port's current project design authorization and prepare all necessary elements for subsequent construction phases.
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Text version
PORT OF SEATTLE
ATTACHMENT A – Scope of Work
MC-0322591 / WPs #105562, 106176, 106407 ATTACHMENT A 00 11 01 A-1 Rev. 02/15/2023
Attachment A Scope of Work
Contract # MC-0322591
Project: Terminal 25 S Habitat Restoration
Project Number: 105562, 106176, 106407 Location: Vicinity of 2917 East Marginal Way South, Seattle, WA 98134
Background
The Terminal 25 property, located between the East Waterway and East Marginal Way, contains an active cargo terminal within its approximate northern two thirds, and mixed maritime usage within the approximate southern third of the property, referred to as T25 South. The eastern half of T25 South is licensed to the Northwest Seaport Alliance (NWSA) and the western half of the site is managed by the Port of Seattle (Port). Since the demolition of prior commercial industrial buildings in the 1990’s, T25 South has seen a variety of partial uses that currently consist of NWSA leased maritime tenant parking, public drayage parking, and bulk material storage.
Due to industrial generated contamination, the Port’s portion of the T25 South property is part of the East Waterway Operable Unit within the Harbor Island Superfund site and has been identified as a potential habitat restoration site within the Port’s proposed multi-site habitat mitigation bank program. The habitat mitigation bank program is a revenue-generating program that restores marginal properties for the purposes of creating 'mitigation credits' that can be reserved, sold, or serve as a component of a future settlement agreement to resolve claims related to Natural Resource Damages (NRD).
This GC/CM Preconstruction Service Agreement supports a multi-year T25 South Habitat Restoration program to provide Preconstruction Support services required for the following two major efforts proposed within the approximately 9-acre upland and aquatic project site along the shoreline of the East Waterway:
1. An Environmental Protection Agency (EPA) regulated cleanup, per the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), involving the removal and disposal of on-site contaminated materials primarily consisting of in-water sediment; creosote treated timber piles and wharf remnants; and upland soils.
2. An NRD restoration of an off-channel environmental area consisting of riparian habitat, marsh, enhanced intertidal, and shallow subtidal areas that are important for the feeding, rearing, and providing refuge for juvenile salmon as well as benefiting various other natural animal species. In addition to the in-water and upland excavation required as part of the contamination cleanup, construction of the new habitat will involve the import and placement of backfill soils and shoreline armoring materials; grading to design elevations; erosion and sediment control; and the installation of plantings and natural shoreline improvements.
Scope of Work Description
Provide preconstruction services in support of project design; scheduling, cost estimating, constructability consideration, regulatory permitting planning; work packages formulation, and project delivery.
The preconstruction services scope of work (SOW) and the associated level of effort (LOE) are intended for the completion work necessary for all deliverables through the 100% design milestone per the Port’s current project design authorization. The Port and GCCM Contractor will meet biweekly to review personnel burn rates and manage the LOE budget.
PORT OF SEATTLE
ATTACHMENT A – Scope of Work
MC-0322591 / WPs #105562, 106176, 106407 ATTACHMENT A 00 11 01 A-1 Rev. 02/15/2023
Major project elements:
(1) In-water remedial cleanup
a. Removal and disposal of creosote-treated timber piles and structural remnants
b. Sediment materials dredge and disposal
c. Clean material placement
(2) Upland remedial cleanup
a. Pre-existing building foundations excavation and disposal
b. Public drayage parking pavement removal, disposal, and minor hardscape restoration
c. Contaminated soils excavation and disposal
d. TSCA and NAPL area material excavation and disposal
(3) Habitat Restoration
a. Clean backfill materials import and placement
b. Grading to design elevations
c. Installation of shoreline armoring and anchored large wood improvements
d. Installation of riparian and marsh plantings
e. Installation of stormwater improvements between NWSA property and habitat area
Anticipated Task List:
1. Project Management
2. Design and Permitting Support
3. Project Schedule and Phasing
4. SC/CM Selection
5. SC/CM Pre-Construction Services
6. Design and Permitting Support
7. Estimating Services
8. Subcontractor Packaging
9. Site and Existing Conditions Verification
10. Logistics Planning
11. Safety Plan Development
12. Quality Plan Development
Preliminary Schedule
30% Design Review: Q1 2027
MACC: Q2 2028
Construction Begins: Q1 2029
Construction Complete: Q3 2031
End of Section
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