Design & Engineering Services for Cell 6 at the SSWMC

Sealed Proposals, in copies of five (5), for the Request for Proposals (RFP) for Design and Engineering Services for Cell 6 at the Southern Solid Waste Management Center, Contract No. S-22-870-SS for the Delaware Solid Waste Authority shall be delivered to the Delaware Solid Waste Authority (DSWA)’s Administrative Office, 1128 South Bradford Street, Dover, Delaware, 19904, no later than 2:00 p.m. on Tuesday, July 19, 2022.  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 for engineering design, engineering services, construction inspection, and certified report preparation services.  At a minimum, the services include but are not limited to:


  1. Review existing site evaluation, including topographic and utility surveys, and geotechnical evaluations.


  1. Perform Site Studies
    1. Conduct topographic survey of the Cell 6 Disposal Area site including all areas necessary for support facilities.
    2. Conduct an Environmental Assessment and prepare a report to provide a detailed analysis of the potential impact of the proposed Cell 6 Disposal Area on the environment.
    3. Conduct a detailed Hydrogeological and Geotechnical Investigation and prepare a report.


  1. Design work including design of a new approximate 90-acre Subtitle D landfill cell, including sub cells and any required modification to ancillary features.
    • Design the entire Cell 6 disposal area with independent subcells including:
      • Liner system;
      • Leachate collection and conveyance system;
      • Leak detection system for the liner system;
      • Landfill gas collection and odor control system; and,
      • Cap;
      • Design appurtenant systems to the landfill, including:
        1. Roads;
        2. Litter fencing;
        3. Stormwater management system;
        4. Tanks, as needed.


4. Preparation of construction bid documents (including measurement and payment, bid table and summary of work) with an estimated construction timeline and construction cost estimat

  1. Develop a detailed schedule for design, permitting and construction.


6. Preparation of permit applications including all fees and associated permitting tasks, review meetings, response to comments, etc.

7. Perform bid evaluation and recommendation for award of construction contract.

  1. Perform engineering services during construction including but not limited to submittal review, change order review, recommendations, and negotiations, answering requests for information, invoice review, running bi-weekly progress meetings, generating meeting notes, and construction schedule management. Services also include full time construction inspection services.


  1. Preparation of a final certification report documenting the construction of the design, suitable for submission to environmental regulatory agencies for approval and all necessary response to comments.


  1. Preparation of final as-built drawing files in AutoCAD 2018 or earlier.


  1. Preparation of Operations and Maintenance Manual
    1. Incorporation of shop drawings and as-builts into the Final Operations and Maintenance Manual.

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 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 express 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 ninety (90) days after the Proposal due date. The submittal of a Proposal in response to this Notice shall constitute an agreement of the Proposer to all of the conditions in this Notice and the RFP.

A copy of the RFP for Contract S-22-870-SS may be obtained by emailing or submitting a request at on or after Tuesday, June 14, 2022.  DSWA will not be responsible for full or partial sets of the RFP, including any addenda, obtained from any sources other than stated above nor may PROPOSER rely upon any other source or information.

A non-mandatory Pre-Proposal Meeting has been scheduled for Tuesday, June 21, 2022 at 10:00 a.m. at the Southern Solid Waste Management Center located at 28560 Landfill Lane Georgetown, DE 19947.

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, and requirements in the scope of their Work and comply with any and all licensing and permitting 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 shall be supervised by a Delaware Registered Professional Engineer.

The successful PROPOSER will be required to execute the Agreement, to furnish a Performance Bond and Payment Bond for the work in the amounts stated in Article 23 of Section 00200 of the Project Manual if the contract amount is more than $200,000, and to execute a Hold Harmless Agreement on form provided in the Project Manual.  The successful PROPOSER will also be required to furnish evidence of insurance coverage as required by the Project Manual and otherwise comply with terms and requirements of the Project Manual.

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.

Five (5) copies of Proposal shall be submitted to DSWA.  The Proposals shall be, sealed, marked, and addressed as follows:

Delaware Solid Waste Authority

1128 South Bradford Street

Dover, Delaware 19904

Attention: Bob Roth

Proposal For: Design and Engineering Services for Cell 6 at the Southern Solid Waste Management Center

Contract S-22-870-SS


No PROPOSER may withdraw their Proposal within ninety (90) days after the actual 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                                          Pam Williamson

Project Manager                                                                     Sr. Executive Assistant

Phone:  302-312-1663                                                            Phone:  302-739-5361

Fax:  302-739-4287                                                                Fax:  302-739-4287

Email:                                                             Email:


  • Planholders
    Company Address Phone Fax
    Civil & Environmental Consultants Inc Langhorne, PA 267-568-2300
    Johnson, Mirmiran & Thompson Inc Newark, DE 614-942-3669
    Montrose Environmental Group West Chester, PA 610-840-9117
    HDR Raleigh, SC 919-232-6682
    Barton & Loguidice Annapolis, MD 717-737-8326
    Sanborn Head & Associates Concord, NH 603-415-6138
    CleanAir Engineering Pittsburgh, PA 724-227-0258
    CDM Smith Raleigh, NC 919-325-3532
    CDM Smith Philadelphia, PA 215-239-6522
    Verdantas Wilmington, DE 302-239-6634
    Prime Vendor Wilmington, NC 910-805-9630
    IMS Bids San Diego, CA 858-490-8800
    Barton & Loguidice Eldersburg, MD 410-795-4626
    Deltek Herndon, VA 206-373-9500
    PWXpress Jacksonville, FL 408-676-8941
    EA Engineering, Science & Technology Hunt Valley, MD 410-329-5164
    Stantec Golden Valley, MN 763-252-6807
    THWilson Bonds Clovis, CA 559-876-2610
    SevenOutsource Newark, DE 103-153-0878
    ConstructConnect Cincinnati, OH 513-458-8564
    Mercer Technologies Firm Gary, IN 219-885-9811
    Geosyntec Consultants Columbia, MD 410-910-7683
    Envirobidnet Port Charlotte, FL 888-888-0090
    Brightfields Inc Wilmington, DE 302-656-9600
    Tetra Tech Madison, WI 786-214-1841
  • Results
    Company Location Bid Aount
    CDM Smith Philadelphia, PA
    Geosyntec Consultants Columbia, MD
    Sanborn Head Newark, DE
    HDR Inc. Raleigh, NC
    Cornerstone Environmental Group (Tetra Tech) Boston, MA