SOW - Sludge Hauling 2025 clean 1a.pdf

UNITED STATES INTERNATIONAL BOUNDARY

AND WATER COMMISSION (USIBWC)

NOGALES FIELD OFFICE

LANDFILL DISPOSAL OF SEWAGE SLUDGE

SCOPE OF WORK (SOW)

April 2025 ofl2

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TABLE OF CONTENTS

ARTICLE I -GENERAL INFORMATION

1.1 General Scope

1.2 Project Location

ARTICLE 2 - GENERAL PROVISIONS

2.1 Contractor

2.2 Government Representatives

2.3 Codes and Standards

ARTICLE 3 - COORDINATION

3.1 Facility Operations

3.2 Pre-commencement Meeting

3.3 Coordination with other stakeholders

3.4 Contractor Access to Site.

ARTICLE 4 - SUBMITTALS

4.1 Documents

4.2 Invoices

ARTICLE 5 - BIO-SOLIDS SLUDGE

ARTICLE 6- SCOPE OF SERVICES

ARTICLE 7-PAYMENTS……………………………………………….……….11

ARTICLE 1- GENERAL INFORMATION

1. GENERAL SCOPE:

The United States section of the International Boundary and Water Commission (USIBWC) operates and maintains the Nogales International Wastewater Treatment Plant (NIWTP) in

Rio Rico, Arizona. The USIBWC is seeking the regular removal of sludge from the filter press inside the NIWTP to an approved municipal landfill during the normal working hours of the Nogales Field Office.

The NIWWTP currently treats approximately 17 Million Gallons per Day (MGD) of raw sewage entering from Nogales, Mexico and Nogales, Arizona using the Biological Nutrient

Removal (BNR) process. The plant treats the Waste Activated Sludge (WAS) by drum thickening followed by an open pit aerobic digestion. Digested sludge flows to a storage pond to be pumped into one of two belt filter presses for polymer assisted dewatering. The final dewatered sludge (known as cake- 14%-30% dried solids) is then into the

Contractor’ssludge hauling truck for disposal, either conveyed from the filter presses, by loader, or another method as deemed safe and necessary by the Area Manager. This contract is for the removal of the sludge to approved municipal landfill(s).

2. PROJECT LOCATION:

The NIWTP is located in Rio Rico, Santa Cruz County, just north of Nogales, Arizona. The treatment plant is situated between the Santa Cruz River that is to the east and Arizona

Highway 19 to the west. There is a railroad track between the highway and the treatment plant. Of particular importance to the contractor, railroad deliveries block the railroad crossing to the plant at random times for various commercial deliveries. The secondary crossing which is located at about half a mile to the south of the main entrance remains open most of the time; however, it may not be suitable for all large vehicles. The contractor is deemed to have allowed for that in his bid.

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ARTICLE 2 - GENERAL PROVISIONS

2.1. CONTRACTOR

2.1.1. All services shall be performed by a contractor with experience in the combined activity of collecting and/or hauling of non-hazardous waste material.

2.1.2. Sludge collection, hauling and disposal services shall be carried out by experienced professional crew properly trained in those services, holding valid requisite permits from state and local authorities. The contractor shall maintain adequate staffing level to complete the services within the contract period.

2.1.3. The contractor shall designate and assign a project manager to represent the contractor under this contract. The contractor representative shall be authorized to make legally binding agreements.

2.1.4. Contractor is responsible for obtaining/maintaining all required State/Federal permits required for the transportation of sewage sludge.

2.2. GOVERNMENT REPRESENTATIVES

2.2.J. The USIBWC's representatives for this Contract are the Contracting Officer

(CO) and the Contracting Officer's Representative (COR).

2.2.2. The Contracting Officer (CO) is responsible for the Contract, including its terms and conditions. The CO is authorized to enter into and administer the

Contract, change or terminate the Contract, and make determinations and findings relating to the Contract.

2.2.3. The CO shall notify the Contractor in writing of the COR appointment and the limits of the COR authority.

2.2.4. The COR is the USIBWC's representative in direct daily contact with the

Contractor. The COR is the Contractor's initial Point of Contact with USIBWC during the performance of this Contract.

2.2.5. The COR shall monitor the Contractor's performance under the Contract and ensure that the Contractor delivers what is stipulated in the Contract.

2.3. CODES AND STANDARDS

2.3.1. The Contractor is solely responsible for compliance with all applicable

Federal, State and Local laws, codes, standards, regulations and ordinances including, but not limited to, the requirements of the latest updates of Arizona

Administrative Codes for transportation of bio-solids/ sewage sludge A.AC.

RlS-9-1011. RlS-8-612, RlS-13-310, RlS-13-11.

2.3.2. Any violation by the contractor's employee, agents or representatives of any

Local, State or Federal requirements shall be the sole responsibility of the contractor.

ARTICLE 3 - COORDINATION

3. COORDINATION

3.1. FACILITY OPERATIONS:

3.1.1. The Contractor shall coordinate all his activities so as not to interfere with the function of the facilities.

3.1.2. The contractor shall confine his activities, material equipment and employees parking within the designated areas as approved by the COR.

3.1.3. The contractor is responsible for any damage caused by his activities and/or employees to existing facilities including paving and curbs, and shall repair such damage to the satisfaction of the COR

3.2. PRE-COMMENCEMENT MEETING:

3.2.1. The Contractor shall be available for pre-commencement meeting with the

COR within one week of receiving the COR letter. The meeting shall be initiated and coordinated by the COR.

3.2.2. The Contractor shall bring to the meeting originals of the latest inspection certificates and current licenses for the vehicles that the contractor is going to

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1212ofl1l use for carrying services under the contract. Copies of the same are part of the required Contractor's submittals.

3.3. COORDINATION WITH OTHER STAKEHOLDERS:

3.3.1. The Nogales Treatment Plant is an active facility. Besides the regular plant operations, there may be a number of contractors and contracting activities on site at any time during the duration of this contract. The contractor shall coordinate with others as needed.

3.3.2. The Contractor shall coordinate all his activities so as not to interfere with the function of the facilities or the activities of other contractors

3.4. CONTRACTOR'S ACCESS TO SITE:

3.4.1. The Contractor shall have access to the site during normal working hours.

Current working hours are from 7:30 AM to 4:00 PM except for weekends and

Federal Holidays.

3.4.2. NIWTP is a restricted access facility. The Contractor shall not access the facility outside normal working hours without express written permission by the COR. The Contractor shall not access the facility outside normal working hours unless accompanied by USIBWC employees.

3.4.3. The contractor shall confine his activities, material equipment and employees parking within the designated areas as approved by the COR.

3.4.4. The contractor is responsible for any damage caused to existing facilities by his activities and/or employees, and shall repair such damage to the satisfaction of the COR.

ARTICLE 4 - SUBMITTALS

4. SUBMITTALS;

4.1. Documents:

4.1.1. The Contractor shall submit copies of all required permits and licenses for transporting bio-solids prior to commencing sludge hauling operations.

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4.1.2. The Contractor shall submit a copy of the landfill approval prior to commencing sludge hauling operations.

4.1.3. The contractor shall submit copies of the latest vehicles and/ or equipment inspection certificates for all vehicles and equipment used for performing the services. The Contractor shall further present the originals of those documents to the COR during the pre-commencement meeting.

4.1.4. The Contractor shall submit copies of driving licenses and certification of the staff assigned to perform the services.

4.2. Invoices:

4.2.1. The Contractor shall present a monthly invoice for payment; supported by a spreadsheet detailing daily sludge hauling and disposal operations including tonnage and tipping fees.

4.2.2. The contractor shall submit details of tipping fees paid by the Contractor to the landfill, including landfill ticket number, ticket date, ticket time and net weight. The Contractor shall submit the original landfill tickets with the invoice.

ARTICLE 5 BIO-SOLIDS SLUDGE

5. BIOSOLIDS SLUDGE:

5.1. The belt filter presses are designed to handle a flow of 450 gallons per minute and have two polymer blending systems to assist in the thickening and dewatering of the sludge.

5.2. Depending on the operation of the filter presses/ polymer system, the cake will vary in total solids contents; however, it is estimated to be pressed to around 14% and occasionally 22% total solids contents.

5.3. The sludge has been tested multiple times and found to be non-hazardous by a very wide margin; and all future production will be subject to random periodic testing.

5.4. Sludge is then stockpiled/temporarily stored for 1-30 days which further dries the sludge to approximately 20 to 35% total solids content. The NIWTP is currently

Page 9 of looking at improving the total solids content to as much as 90% by installing drying equipment that has been shown to achieve rates this high. This objective is expected to be met within the next three years.

5.5.

ARTICLE 6 SCOPE OF SERVICES

6. SCOPE OF SERVICES:

6.1. The Contractor shall remove the sludge directly from the filter presses, transport it to a suitable Municipal landfill, and dispose of it in accordance with EPA, ADEQ and Local regulations.

6.2. The Contractor shall provide a minimum of three 14 cubic foot tipper trucks along with two or more licensed operators to operate the trucks. Trucks will be filled to approximately 80% capacity for safe transport, into the Contractor’s sludge hauling truck for disposal, either conveyed from the filter presses, by loader over the bed side, or another method as deemed safe and necessary by the Area

Manager..

6.3. The Contractor may opt to provide tipper trailers and tractors instead of trucks, subject to the approval of the COR. A minimum of three trailers and two tractors are needed for this option, along with one or more licensed operators. To exercise this option, the Contractor shall submit his proposal to the COR for evaluation and approval.

6.4. The Contractor shall remove the sludge daily, Monday through Saturday, excluding federal holidays, as the trucks are filled to 80% capacity. Monthly sludge production varies from one month to the next. Estimating high at 20 tons per load and four loads per day, the contractor shall allow in his bid, as a conservative figure, for up to 2,400(two thousand and four hundred) tons in a full month, and a pro-rated amount for a partial month.

6.5. In the unlikely event that sludge production exceeds the amounts stated in article

6.4, there shall be a pro-rate adjustment to the contract.

6.6. Currently, there is no disposal in the Rio Rico immediate vicinity, so trucks are needing to haul to Tucson to the Los Reales Landfill, 5300 E Los Reales Rd, Tucson, AZ 85756 [(520) 791-4183]. Round trip travel time is approximately three (3) hours. The next landfill is in Marana, AZ. It is up to the contractor to locate a landfill that will accept the sludge.

6.7. The contractor shall provide all the trucks, trailers, tractors, other equipment and

Commented [AF1]: 30 days*4loads*20 tons=2400

Page 10 of operators needed to achieve and maintain the continual daily removal and disposal of the sludge as it is produced at the filter press.

6.8. The contractor is responsible for all maintenance activities and expenses related to trucks, trailers and all other equipment.

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6.9. The contractor shall ensure that all equipment are in safe working conditions and that all inspections are performed as required by any and all authorized regulatory agencies having jurisdiction. The contractor shall maintain copies of the inspection certificates and make them readily available to the COR upon request.

6.10. The contractor is responsible for all costs including, but not limited to, the costs of fuels, consumables, drivers compensation, and any other applicable fees and taxes with the exception of the landfill tipping fees which shall be paid by the

Contractor and refunded by USIBWC. The Contractor shall pay the Landfill tipping fees and include in his monthly invoice in order to receive a refund.

6.11. The contractor shall complete a daily log sheet of trips showing the truck identification number, the date, time and signature of an authorized IBWC representative. An example is shown in attachment 1 "Required Performance Metric

Table". The Metric Table shall be developed and submitted by the Contractor. The columns for the ticket number, ticket date, ticket time, net weight and remarks shall be completed by IBWC representative upon receiving the said information from the contractor.

6.12. The contractor shall provide IBWC the originals of all landfill receipts showing truck identification number, gross weight, tare weight, date and time for each trip.

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ARTICLE 7 - PAYMENT

7. PAYME NTS:

7.1. The Contractor shall submit monthly invoices requesting progress payments. The monthly invoice shall be comprised of the following:

7.1.1. The monthly invoice shall be a fixed amount equal to the total bid amount divided by the number of months for the base period. For a full fiscal year, hence the option years, the total annual bid shall be divided by 12 months.

7.1.2. Total amount the contractor paid in landfill fees for the month. USIBWC shall refund this amount to the contractor.

7.2. The Contractor shall submit the following supporting documents with his monthly invoice:

7.2.1. A log of the sludge disposed at the landfill each working day during the subject month.

7.2.2. A log of tipping fees paid to the landfill each working day including landfill receipts numbers, truck identification number, gross weight, tare weight, trip date and trip time.

7.2.3. Original landfill tickets and/ or receipts.

7.2.4. Invoicing Processing Platform

The U.S. Section of the International Boundary and Water Commission

(USIBWC) has transitioned to an electronic invoicing system. The Invoice

Processing Platform (IPP) is a secure web-based system provided by the U.S.

Department of the Treasury’s Bureau of the Fiscal Service in partnership with the Federal Reserve Bank of St. Louis. IPP is available at no cost to any commercial vendor or independent contractor doing business with a participating government agency. Information concerning accessing the IPP system will be provided at the time of award.

8. COVID REQUIREMENTS:

8.1 All vendors must adhere to COVID-19 requirements for social distancing and the use of personal protective equipment (PPE (i.e. mask and gloves). Vendors will not be permitted access to IBWC facilities without proper PPE. Virtual sites (video/photographs) are not permitted.

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