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Request for Information
for
Reverse Vending Machine Programs
for
Baltimore City, Maryland
Now Available

The Authority is issuing a Request for Information (“RFI”) on behalf of the Baltimore City’s Department of Public Works (“DPW”) to gather information from businesses and/or other entities that may be interested in partnering with the City of Baltimore (“City”) to implement reverse vending machines for commonly used beverage containers. The Authority and DPW seek responses to the questions listed in the “RESPONSES” section of this RFI. The Authority and DPW may use the information collected through this RFI to plan for future waste diversion efforts, related costs and draft a potential Request for Proposal (“RFP”). This RFI does not constitute a commitment, implied or otherwise. The Authority and City will not be responsible for any costs incurred by respondents to prepare and submit their response to this RFI.

Submission Deadline is 12 p.m. (local time) on Friday, March 13, 2026 (“Due Date”). 

Each Vendor shall submit a copy by email with the subject line “Attention: Reverse Vending Machine RFI Response” to procurement@nmwda.org. The response shall not be longer than 30-pages.

Questions and Requests for Clarification related to this RFI should be submitted prior to 12:00 p.m. on Friday, February 13, 2026. Questions shall be emailed to procurement@nmwda.org.

The RFI, as well as supporting documents, will be posted and available for viewing/download from the links provided below.  You may also email procurement@nmwda.org to request a copy.

RFI for City of Baltimore for Reverse Vending Machine Programs

Notice Posted:  1-27-26

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Invitation for Bids (IFB)
Baltimore City – Residential Household Hazardous Waste Services
Available Now

The Northeast Maryland Waste Disposal Authority (the “Authority”) is soliciting bids for a qualified contractor to provide services to the City of Baltimore, Maryland (the “City”)
related to the acceptance, transportation, and disposal (or recycling) of residential household hazardous waste during City designated Residential Household Hazardous Waste (“HHW”) Drop-off Days.

The Bids must be emailed to the Authority at procurement@nmwda.org on or before 4:00PM on Wednesday, November 19, 2025. There will not be a public bid opening. Unofficial results will be posted to the Authority’s website at www.nmwda.org within 5 business days. Bids, requests for withdrawals, and modifications not received by the time and at the location indicated will be deemed late and will not be considered.

All contacts relative to this solicitation, including requests for information as well as questions concerning these instructions, shall be directed to the Authority by email at (procurement@nmwda.org), with the Subject heading “City of Baltimore Residential Household Hazardous Waste Services,” on or before 4:00PM, Monday, November 3, 2025.

The IFB may be viewed/downloaded from the links provided below. You may also email procurement@nmwda.org to request a copy.

IFB for City of Baltimore Residential Household Hazardous Waste Services (issued 10.15.25)
DRAFT Contract for Baltimore City HHW Services
Addendum No. 1 to the IFB for Baltimore City – Residential Household Hazardous Waste Services dated (issued 10.15.25)
Attachments to Addendum No. 1:
Sisson HHW Days April-June 2025
HHW Invoices Apr-Oct
BC HHW Pics
Unofficial Bid Results Summary

Notice Posted:  10-15-25
Notice Updated: 11-17-25

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Request for Proposals
for
Solid Waste Material Transportation Services
for
Baltimore City, Maryland
Now Available

The purpose of this procurement is to seek proposals from experienced vendors who can provide supplemental solid waste material transfer services (including single stream recycling and mixed refuse), received at the Baltimore City Northwest Transfer Station located at 5030 Reisterstown Rd, Baltimore, MD 21215. The Northeast Maryland Waste Disposal Authority (the “Authority”) is issuing this procurement on behalf of the Mayor and City Council of Baltimore (“the City”). The Northeast Maryland Waste Disposal Authority is a multi-jurisdictional agency created by the State of Maryland to assist its Member Jurisdictions with their integrated solid waste and recycling needs. 

The term of agreement will commence on July 1, 2025 and continue with a fixed term, with options to renew at the Authority’s sole discretion.

Proposal due date is 3 p.m. (local time) on Wednesday, April 23, 2025 (“Due Date”). 

A non-mandatory pre-proposal meeting and Transfer Station tour will be held on Wednesday, April 2, 2025 at 10:00 a.m. (local time) at the Northwest Transfer Station. If interested in attending the pre-proposal conference/tour, please RSVP by March 31, 2025, to procurement@nmwda.org. Attendees shall meet at the scale house of Transfer Station. 

Please return executed copies of Form A-1 and Form A-2 of this RFP to the Authority to receive any written Addenda that describes any changes, interpretations, or clarifications in response to any Proposers’ written questions. Proposers may mail or email (procurement@nmwda.org) the forms. 

The RFP, as well as supporting documents, will be posted and available for viewing/download from the links provided below.  You may also email procurement@nmwda.org to request a copy.

RFP – Baltimore City Solid Waste Material Transportation Services for Baltimore City, MD (issued 3-19-25)
Appendix A DRAFT Solid Waste Material Transportation Master Service Agreement
DRAFT Solid Waste Material Transportation Confirmation of Transaction
Addendum No. 1 to the Request for Proposals for Baltimore City Solid Waste Material Transportation Services
Addendum No. 2 to the Request for Proposals for Baltimore City Solid Waste Material Transportation Services

Notice Posted:  3-19-25
Notice Updated: 4-10-25, 4-21-25

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Request for Expressions of Interest
for
Design, Build and Operate:
Solar Installations on Municipal Solid Waste Property and Infrastructure
AND/OR
Systems for Beneficial Use of Landfill Gas for Mainly Small, Closed and/or Rural Landfills:
Utilizing Standard or Mobile Turbines/Engines, Compressed Natural Gas/Renewable Natural Gas
and/or Power Purchase Services
Available Now

The Authority is issuing a Design, Build and Operate Request for Expressions of Interest (“REOI”) to assist its Member Jurisdictions with Solar Installations on Municipal Solid Waste Property and Infrastructure AND/OR Systems for Beneficial Use of Landfill Gas for mainly Small, Closed and/or Rural Landfills: Utilizing Standard or Mobile Turbines/Engines, Compressed Natural Gas/Renewable Natural Gas and/or Power Purchase Services (e.g., Power Purchase Agreements or “PPAs”) (altogether “Services”).

These Services would cover the responsibilities for managing any solar installation, and/or landfill gas (“LFG”) after it runs through the Member Jurisdiction blower system (for existing flares onsite), for the landfills with flares and blower systems. Member Jurisdiction existing landfill gas operation, monitoring and maintenance staff/contractors would be expected to perform their existing functions, as is, for the existing landfill gas collection system and for all gas before it reaches the blower onsite, as applicable. The Authority is seeking interest in these Services for landfills within the Member Jurisdiction footprint.

This REOI is being issued in order to help gain an understanding of companies or other entities (“Contractors”) that would be interested in performing these Services. If the Authority determines that there is sufficient interest and ability to provide these Services, the Authority may issue a Request for Proposals (“RFP”) to provide that Service or negotiate a contract directly with an interested Contractor that has responded to this REOI.  This REOI is not intended to provide sufficient detail in order to select a Contractor for the Service.

Responses to the REOI are due by Monday, June 24, 2024, at 4:00 pm (local time).  Submission requirements are shown in Section D of the REOI.  The Authority will make a determination as to whether to progress to a RFP process, enter into competitive negotiations with one or more Contractors, or to discontinue with the REOI.  All Contractors that respond to the REOI will be notified of the Authority’s determination in writing.

This REOI was originally issued on 10-12-23 and was revised on 3-22-24.

The original REOI, as well as the revised REOI, may be viewed/downloaded from the links provided below. Please note that the revised REOI may be found under Addendum No. 3 below:

REOI for Design, Build & Operate Beneficial Use of LFG for Small, Closed and/or Rural LFs…10-12-23
REOI Attachments:
Beantown Gas Venting Wells all properties
Beantown Dump – Methane Monitoring Data Tables (thru 2nd qtr 2023) excel
2022 Tier 2 Emissions Summary Report Northern Landfill – final
HSL Semi-Annual Report (January-June 2023 w stats)
PSL Semi-Annual Report (January-June 2023 full report)
Texas 2023 Perimeter Probe LFG Monitoring
Addendum No. 1 to REOI for Design, Build & Operate Beneficial Use of LFG for Small, Closed and/or Rural LFs…1-11-24
Addendum No. 2 to REOI for Design, Build & Operate Beneficial Use of LFG for Small, Closed and/or Rural LFs…2-20-24
Addendum No. 3 to REOI for Design, Build & Operate Beneficial Use of LFG for Small, Closed and/or Rural LFs…3-22-24
Attachments to Addendum No. 3:
REOI for Design, Build and Operate:  Solar Installation on Municipal Solid Waste Property and Infrastructure and/or Systems for Beneficial Use of Landfill Gas Mainly for Small, Closed and/or Rural Landfills:  Utilizing Standard or Mobile Turbines/Engines, Compressed Natural Gas/Renewable Natural Gas and/or Power Purchase Services – revised date of issue 3-22-24
– Alpha Ridge Landfill Fuel Gas Analysis Report 2023
– Baltimore County Seeking Deal to Put Solar Panels on Government Buildings and in Parks
– Critical Issues Batavia Landfill 20160304
– Frederick County-1 – January Monthly Spreadsheet
– Frederick County-2024 – DSWR Daily Flare Report
– Frederick Couty-2024 – DSWR Gas Flows
– Frederick County-2024-1-January Gas Extraction Wells
– Frederick County-ShopHeat
– Gude Landfill – Landfill Gas Monitoring Report – 1st Quarter of 2023
– Gude Landfill – Landfill Gas Monitoring Report – 2nd Quarter of 2023
– Gude Landfill – Landfill Gas Monitoring Report – 3rd Quarter of 2023
– Gude Landfill – Landfill Gas Monitoring Report – 4th Quarter of 2023
– Gude Landfill Gas Management Information and Gas Curve
– Oaks Landfill – Landfill Gas Monitoring Report – 1st Quarter of 2023
– Oaks Landfill – Landfill Gas Monitoring Report – 2nd Quarter of 2023
– Oaks Landfill – Landfill Gas Monitoring Report – 3rd Quarter of 2023
– Oaks Landfill – Landfill Gas Monitoring Report – 4th Quarter of 2023
Addendum No. 4 – REOI for Design, Build & Operate:  Solar Installation on Municipal Solid Waste Property & Infrastructure and/or Systems for Beneficial Use of Landfill Gas…5-24-24
Addendum No. 5 – REOI for Design, Build & Operate:  Solar Installation on Municipal Solid Waste Property & Infrastructure and/or Systems for Beneficial Use of Landfill Gas…6-10-24
Addendum No. 6 – REOI for Design, Build & Operate:  Solar Installation on Municipal Solid Waste Property & Infrastructure and/or Systems for Beneficial Use of Landfill Gas…6-14-24
Addendum No. 7 – REOI for Design, Build & Operate:  Solar Installation on Municipal Solid Waste Property & Infrastructure and/or Systems for Beneficial Use of Landfill Gas…6-17-24
Addendum No. 8 – REOI for Design, Build & Operate:  Solar Installation on Municipal Solid Waste Property & Infrastructure and/or Systems for Beneficial Use of Landfill Gas…8-20-24
Addendum No. 9 – REOI for Design, Build & Operate: Solar Installation on Municipal Solid Waste Property & Infrastructure and/or Systems for Beneficial Use of Landfill Gas…10-15-24
Addendum No. 10 – REOI for Design, Build & Operate: Solar Installation on Municipal Solid Waste Property & Infrastructure and/or Systems for Beneficial Use of Landfill Gas…1-22-25
Addendum No. 11 – REOI for Design, Build & Operate: Solare Installation on Municipal Solid Waste Property & Infrastructure and/or Systems for Beneficial Use of Landfill Gas…8-29-25
Addendum No. 12 – REOI for Design, Build & Operate: Solar Installation on Municipal Solid Waste Property & Infrastructure and/or Systems for Beneficial Use of Landfill Gas…10-1-25
Addendum No. 13 – REOI for Design, Build & Operate: Solar Installation on Municipal Solid Waste Property & Infrastructure and/or Systems for Beneficial Use of Landfill Gas…11-25-25
Addendum No. 14 – REOI for Design, Build & Operate: Solar Installation on Municipal Solid Waste Property & Infrastructure and/or Systems for Beneficial Use of Landfill Gas…2-5-26

Notice Posted:  10-12-23
Notice Updated:  1-11-24, 2-20-24, 3-22-24, 4-17-24, 5-24-24, 6-10-24, 6-14-24, 6-17-24, 8-20-24,
10-15-24, 1-22-25, 8-29-25, 10-1-25, 11-25-25, 2-5-26