Sealed Proposals, in copies of four (4) and one (1) complete electronic copy in PDF format on a flash drive, for the Request for Proposals (RFP) for Geotechnical Monitoring Services for the Cherry Island Landfill (CIL), Contract No. S-25-929-NC for the Delaware Solid Waste Authority shall be delivered to the Delaware Solid Waste Authority (DSWA)’s Administrative Office, 601 Energy Lane, Dover, Delaware, 19901, no later than 2:00 p.m. on Tuesday, November 18, 2025, DSWA may extend the time and place of the due date for Proposals by providing at least two (2) calendar days’ notice by certified mail, fax, or email to any PROPOSERS who DSWA has recorded as having received a copy of the RFP. If the Proposal is sent by mail, or other personal delivery system, the sealed envelope containing the Proposal shall be enclosed in a separate envelope plainly marked on the outside with the notation, “Proposal Enclosed.” Proposals delivered by any means other than mail or personal delivery shall be rejected.
The Work under this contract is generally for geotechnical monitoring services at CIL but also includes annual Mechanically Stabilized Earth berm inspections and Culvert inspections. At a minimum, the services include but are not limited to:
- Review of Design and Geotechnical Data
- Quarterly and annual monitoring of all geotechnical instrumentation, including piezometers, inclinometers, shape accelerometer arrays, settlement plates and sensors adjacent to or within landfill areas of the CIL
- Quarterly and annual reports evaluating and summarizing the data obtained with recommendations for CIL
- Additional monitoring events required for earthquakes, storm surges, and damaged geotechnical instruments
- Replacement of geotechnical instruments
- Stability Analyses to include recommendation, performance and analysis of foundation testing in and around the CIL
- Preparation of future filling plans
- Visual Inspection and documentation of external features that could affect the structural integrity of the MSE berm
- Visual Inspection and documentation inside the culverts to assess the structural integrity of the entire length of the culverts
- Construction Quality Assurance during culvert construction
- Final Culvert Evaluation and Final Report
Additional requirements and description of work are set forth in the RFP as are the criteria for evaluation and determination of the successful proposal. DSWA may award the contract to the most responsible PROPOSER submitting the most responsive proposal which serves the best interests of DSWA and the citizens of the state of Delaware, and not necessarily at the lowest cost.
Every Proposal prepared in response to this RFP shall be prepared by the PROPOSER with the expressed understanding that any and all claims to reimbursement for the cost and expense of its preparation are waived. No PROPOSER may withdraw the Proposal within one hundred twenty (120) days after the Proposal due date.
The Contract will be for a period of five (5) years beginning April 1, 2026, and shall expire March 31, 2031.
A copy of the RFP for Contract S-25-929-NC may be obtained by emailing smg@dswa.com or submitting a request at https://dswa.com/resources/rfpbids/request-for-bidsproposals/ on or after Tuesday, October 14, 2025. DSWA will not be responsible for full or partial sets of the Project Manual obtained from any sources other than stated above, or in the project manual, nor shall BIDDER rely upon such other sources or information.
A non-mandatory Pre-Proposal Meeting has been scheduled for Tuesday, October 28, 2025, at 10:00 a.m. at the Cherry Island Landfill located at 1706 East 12th Street Wilmington, Delaware, 19809. PROPOSERS are encouraged to attend as PROPOSERS are solely responsible for understanding and being aware of site conditions.
The PROPOSER must submit, with its Proposal, documentation indicating it is licensed to conduct business in the State of Delaware and PROPOSER must meet and comply with all state, local, and federal laws, regulations, ordinances, codes and requirements in the scope of their Work and comply with any and all licensing requirements. PROPOSER shall provide a copy of its Certificate of Authorization (COA) to practice engineering in the State of Delaware from the Delaware Association of Professional Engineers (DAPE). All work associated with this project shall be supervised by a Delaware Registered Professional Engineer with a high degree of experience in geotechnical monitoring.
DSWA reserves the right to accept or reject any or all Proposals which in its judgment is in the best interest of DSWA, and to waive any irregularities or informalities in the Proposal or Proposal process, and all PROPOSERS are notified that such acceptance or rejection or waiver shall be without liability on the part of DSWA for any action brought against DSWA, any or all of its directors, or any DSWA agent, officer or employee, brought by any PROPOSER because of such acceptance or rejection or waiver, nor shall any PROPOSER seek any recourse of any kind against such entity or individuals because of such acceptance or rejection or waiver. Every PROPOSAL prepared in response to this notice shall be prepared at the sole cost and expense of the PROPOSER and shall be prepared by the PROPOSER with the express understanding that any and all claims to reimbursement for the cost and expense of its preparation are waived. The submittal of a Proposal in response to this notice shall constitute an agreement of the PROPOSER to all the provisions set forth in this notice and the Project Manual.
Four (4) copies and one (1) complete electronic copy in PDF format on a flash drive of the Proposal shall be submitted to DSWA. The Proposals shall be sealed, marked, and addressed as follows:
Delaware Solid Waste Authority
601 Energy Lane
Dover, Delaware 19901
Attn: Bob Roth
Proposal for: Geotechnical Monitoring Services for the Cherry Island Landfill
Contract S-25-929-NC
No PROPOSER may withdraw their Proposal within one hundred twenty (120) days after the proposal due date of opening thereof, except as may be authorized by the Project Manual.
The Project Manual explains the process by which prospective Proposers may submit questions about the meaning or intent of the Project Manual. Please contact DSWA prior to the Proposal opening if you wish to schedule a site tour.
All other inquiries regarding this work shall be directed to:
Bob Roth and Simone George
Project Engineer Administrative Assistant
Phone: 302-739-5361 Phone: 302-739-5361
Fax: 302-739-4287 Fax: 302-739-4287
Email: rr@dswa.com Email: smg@dswa.com