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Request for Proposals (RFP)

Design and Construction of Roof Water Catchment System for Potable Water Supply at Camp Kilohana, Island of Hawai‘i

Issued by: Girl Scouts of Hawaii

Date Issued: October 13, 2025

Proposal Due Date: As soon as possible, with rolling consideration when at least 3 proposals are received

1. Introduction

Girl Scouts of Hawaii is soliciting proposals from qualified contractors to design, permit, and construct a roof-based water catchment system at Camp Kilohana (Baldwin Lodge). The system must provide a reliable source of potable water, meeting state and county health standards, and should include recommendations for roof cleaning, gutter installation or improvements, and maintenance to ensure long-term safety and functionality.

1. Scope of Work

The selected contractor will be responsible for:

A. Design

• Evaluate the existing building roof structure for suitability of catchment.
• Develop a system design that includes:
• Roof cleaning and preparation requirements (safe for potable water collection)
• Gutters, downspouts, and first-flush diverters
• Catchment tank(s), including appropriate size, location, and foundation
• Filtration and disinfection system (e.g., sediment filter, UV, chlorination)
• Pump and plumbing integration with existing water lines (if applicable)
• Provide stamped design drawings and specifications.

B. Construction & Installation

• Supply and install all necessary equipment, including gutters, tanks, filters, pumps, and plumbing.
• Conduct roof cleaning and surface preparation, including any recommended coatings or repairs.
• Install or replace gutters to optimize water collection efficiency.
• Connect system to potable water distribution as needed.
• Ensure compliance with all building, health, and environmental regulations.

C. Commissioning & Testing

• Test water quality to verify potability standards are met.
• Conduct performance testing of pumps, filters, and storage tanks.
• Provide training for staff on system operation and maintenance.

D. Documentation

• Provide a full system manual, including maintenance schedule and cleaning guidelines.
• Deliver warranties for equipment and workmanship.
• Submit required permits, approvals, and inspection sign-offs.

1. Contractor Qualifications

• Hold appropriate licenses for plumbing, roofing, and potable water system installation in the State of Hawaii (or relevant jurisdiction).
• Demonstrate prior experience with similar potable water catchment projects.
• Carry appropriate insurance (general liability, workers’ compensation).
• Provide three (3) references.

1. Proposal Requirements

• Copy of state licenses.
• Design concept and technical approach.
• Recommendations for roof cleaning, gutter work, and ongoing maintenance.
• Preliminary project timeline.
• Detailed cost estimate (materials, labor, permits, testing).
• Warranty and maintenance offerings.
• References.

1. Evaluation Criteria

• Experience and qualifications (25%)
• Design quality and compliance with potable water standards (25%)
• Project approach and methodology (20%)
• Cost competitiveness (20%)
• References and past performance (10%)

1. Timeline

• RFP Issued: October 13, 2025
• Site Visits: to be arranged with GSH as needed
• Proposal Deadline: As soon as possible, with rolling consideration when at least 3 proposals are received
• Contractor Selection: As soon as possible, with rolling consideration when at least 3 proposals are received
• Project Start Date: as soon as possible

1. Submission Instructions

Submit proposals electronically to:

Amber Richardson, Director of Camp Advancement

arichardson@gshawaii.org

808-675-5524

Subject line: RFP Submission – Camp Kilohana Water Catchment System

1. Terms & Conditions

• Girl Scouts of Hawaii reserves the right to reject any or all proposals.
• Selection is not solely based on lowest bid; qualifications and design quality will also be considered.
• Contractor must obtain and pay for all necessary permits.
• Work must comply with all local building codes, environmental standards, and potable water regulations.