Dupont Wappoo Watershed Flood Mitigation Engineering Services

The City of Charleston is seeking an engineering consultant for Phase One professional services to evaluate flood-mitigation alternatives and develop a conceptual preliminary engineering and planning package for the approximately 1,600-acre Dupont Wappoo watershed.

City of Charleston > Department of Stormwater Management


General
Open
2026-CP0021
Oct 09, 2026 06:00 PM
Sep 15, 2026 03:25 PM
$20,000,000.00
Small Business
Request for Quote/Qualifications (RFQ)
Local
Ask AI about this solicitation
Contact
mallettj@charleston-sc.gov
+18435796419
2 George Street, Charleston, SC, USA
Submission Instructions
Mail
City of Charleston Stormwater Management, 2 George Street, Suite 2100, Charleston, SC 29401
Description

The City of Charleston is requesting qualifications from an engineering consultant for Phase One of the Dupont Wappoo Watershed Improvements Project. The work covers preliminary site assessment, limited topographic survey and field investigations, review of existing studies and stormwater data, conceptual hydrologic and hydraulic modeling using StormWise (formerly ICPR4), evaluation of flood-mitigation alternatives, regulatory and permitting coordination, property and easement review, preliminary environmental review, utility coordination, public outreach, conceptual cost estimating, phasing recommendations, and preparation of a transferable Phase One Design Package for subsequent U.S. Army Corps of Engineers design work. The package is expected to include preliminary engineering and hydrologic and hydraulic technical memoranda, model files and supporting data, conceptual layouts and exhibits, environmental and regulatory considerations, property and easement considerations, utility documentation, conceptual opinions of probable construction cost, implementation recommendations, and key assumptions and limitations. The anticipated construction cost limit for all project components is $20 million. The consultant must demonstrate relevant flood-reduction experience, including at least five years of professional design experience and at least five comparable project examples, and must address the City's Small Business Enterprise guidelines. The base Statement of Qualifications is limited to 30 single-sided pages, with supplemental material limited to 20 additional pages.

Classification Codes
NAICS541330Engineering Services
PSCAH34WATER POLLUTION - ENGINEERING DEVELOPMENT
Smart Codes
flood mitigation engineeringhydrologic hydraulic modelingstormwater drainage design
Specifications
Service Only
Timeline
Sep 15, 2026 07:25 PM-Publication Date
Sep 28, 2026-Questions Due Date
Oct 09, 2026 06:00 PM-Statement of Qualifications Due Date
Jan 1, 2027-Engineering Design Work Commences
Jun 1, 2027-Phase One Design Package Completed
Requirements
Required
  • General Liability — $1,000,000.00
  • Professional Liability — $1,000,000.00
Scored
  • Minimum 5 references
  • Within the last 5 years
  • Client point of contact required for each reference
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