Sol_140R4026Q0075_Amd_0001.pdf

Offers must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended, by one of the following methods:

(a) By completing items 8 and 15, and returning or (c) By separate letter or electronic communication which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by letter or electronic communication, provided each letter or electronic communication makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

E. IMPORTANT: is not is required copies to the issuing office.

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT ID CODE

2. AMENDMENT/MODIFICATION NUMBER 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQUISITION NUMBER 5. PROJECT NUMBER (If applicable)

7.ADMINISTERED BY (If other than Item 6) CODE

STANDARD FORM 30 (REV. 11/2016)

Prescribed by GSA FAR (48 CFR) 53.243

FACILITY CODE

9A. AMENDMENT OF SOLICITATION NUMBER

9B. DATED (SEE ITEM 11)

10A. MODIFICATION OF CONTRACT/ORDER NUMBER

10B. DATED (SEE ITEM 13)

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

The above numbered solicitation is amended as set forth in Item 14. is extended. is not extended.

12. ACCOUNTING AND APPROPRIATION DATA (If required) copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NUMBER AS DESCRIBED IN ITEM 14.

CHECK ONE A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE CONTRACT ORDER

NUMBER IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation data, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15C. DATE SIGNED

15A. NAME AND TITLE OF SIGNER (Type or print)

16C. DATE SIGNED

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

PAGE

6. ISSUED BY CODE

8. NAME AND ADDRESS OF CONTRACTOR (Number, street, county, State and ZIP Code) (X)

CODE

15B. CONTRACTOR/OFFEROR

(Signature of person authorized to sign)

16B. UNITED STATES OF AMERICA

(Signature of Contracting Officer)

Previous edition unusable

PAGESOF

Contractor

The hour and date specified for receipt of Offers to sign this document and return

Russell Oaks

See continuation page

Bureau of Reclamation Upper Colorado Region Regional Office 125 South State Street, Room 8100 Salt Lake City UT 84138

R40

140R4026Q0075

07/30/2026

07/30/2026

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The purpose of this modification is to provide publicize Questions received to date and their corresponding answers. This amendment must be acknowledged with your quote submission.

QUESTION: Can we get road access within a 1/2 mile of all drone acres?

ANSWER: Parcel A, designated for aerial herbicide application, is accessed from the east side of the river using county-maintained Turtleback Avenue (A005). Although the route is periodically maintained, conditions can vary throughout the year depending on weather and county grading operations. Contractor scheduling and coordination are essential to ensure timely access prior to planned drone flights to avoid operational delays. Additional unpaved roads run parallel to the river and typically lie within approximately

0.5 miles of the parcel.

Contractors are strongly encouraged to verify access routes during pre-award proposal development using tools such as Google Earth, recent aerial imagery, or site-reconnaissance data. This verification helps ensure proposal assumptions accurately reflect real-world conditions and supports development of the required Site Use Plan in accordance with PWS access-route and staging-area requirements.

QUESTION: Are there shapefiles for no fly zones?

ANSWER: USBR does not provide shapefiles for no-fly zones. Contractors must compile their own GIS layers using FAA airspace data, environmental constraints, and all project-specific avoidance zones provided by Reclamation. In addition, drone flights during the MBTA/ESA nesting season (April 1–August

31) are closely monitored due to the potential presence of active nests and the inability to predict nesting activity at the time of contract performance. Any aerial herbicide applications or drone operations within this biological window require advance coordination and are subject to approval by the Agency biologist through the Government’s biological-clearance process. Contractors must submit proposed flight polygons at least two weeks prior to any intended work, and operations may only proceed once AAO biologist clearance is issued.

QUESTION:Is it spike or liquid application?

ANSWER: For treatment of tornillo (Prosopis spp.), liquid herbicide applications—ground-based or aerial—are the approved and recommended method under the PWS. Spike or pellet formulations are not authorized due to soil-movement risk, limited control, and incompatibility with required calibration and drift-management procedures. Spike/pellet (soil-applied) methods rely heavily on soil moisture and slow breakdown; tornillo’s root structure can make uptake inconsistent.

QUESTION:Is broadcast spraying acceptable for drone acres?

ANSWER: Broadcast spraying is acceptable for drone acres as long as the drone system is calibrated for broadcast application and environmental conditions support safe, uniform coverage. Key requirements for acceptable broadcast drone spraying include:

o Proper drone spray system calibration (flow rate, boom width, droplet size).

o UAV-appropriate drift control measures (weather windows, flight height, droplet spectrum).

o Use of label-approved application methods and droplet categories.

o Ensuring terrain and canopy allow consistent coverage.

QUESTION:Are we flexible on dates for drone application notwithstanding MBTA guidelines?

ANSWER: Date flexibility for drone (aerial) herbicide application is possible, but only outside MBTA/ESA nesting-season restrictions and within the dates proposed and justified in the contractor’s Pre-Award Technical Proposal, specifically the Proposed Schedule submitted under PWS Section 5.2.1 Technical Submittals. Under PWS Section 5.2.1 Technical Submittals, the contractor must submit a Proposed Schedule that:

o Fully integrates MBTA/ESA timing windows o Identifies planned drone-application windows o Sequences aerial herbicide operations with mechanical work and calibration requirements o Provides justification through the Aerial Herbicide Operations Plan and the

Calibration & Drift Management Plan

QUESTION:Are there requirements for American made only drones?

ANSWER: No, the Bureau of Reclamation does not require contractors to use American-made drones.

Because this is a service contract and UAVs are contractor-furnished equipment, Buy American, BABA, and Blue-UAS restrictions do not apply. Contractors may use drones of any manufacturer origin provided they meet FAA Part 137, safety, calibration, and herbicide-application performance requirements.

However, your pre-award proposal must include the required technical submittal describing the drone system you intend to use. Under PWS Section 5.2.1, the Aerial Herbicide Operations Plan must identify your aircraft systems, associated certifications, drift-control features, meteorological operating limits, and calibration verification. This submittal is mandatory for award consideration and must fully document the drone platform’s capability to perform compliant aerial herbicide application.

QUESTION:What chemical is required for drone and hand work?

ANSWER: The Bureau of Reclamation does not prescribe a single required herbicide product for either drone (aerial) or hand/UTV (ground) work. Instead, the contractor must propose the chemical(s) in the Vegetation Herbicide Treatment Management Plan and Aerial Herbicide Operations Plan submitted with the pre-award proposal, and the Government reviews and approves the selection for compliance.

Typical effective chemical types include:

o Triclopyr-based foliar herbicides o Imazapyr-based herbicides o Triclopyr + Fluroxypyr combinations o Auxin-type herbicides (e.g., 2,4-D blends) when labeled for woody foliar application

QUESTION:Is landvisor required due to spraying on mesquite?

ANSWER: Assumed contractor is asking about LandVisor in the context of Corteva Agriscience. No, LandVisor is not required for mesquite spraying with approved herbicide plan. It is an optional decision-support tool. You may use your preferred mapping and planning system as long as application is label-compliant, properly documented, and meets drift-control and safety requirements. PWS does not specify a specific herbicide brand but must demonstrate efficacy for tornillo species.

QUESTION:For chipping and slash treatment, we have a commercial grade incinerator. Is this something that would be able to be used for this project to incinerate chipping/slash material?

ANSWER: A commercial-grade incinerator is not automatically approved for use on this project. The PWS does not authorize incineration as a slash-disposal method, and any open-burn or mechanical incineration activity would require advance approval, environmental compliance verification, and fire-management authorization. Industry best-practices for vegetation-management projects like this prioritize either mulching, scattering, or removal of slash rather than incineration due to safety, air-quality, and wildfire-risk considerations.

If you wish to propose the use of an incinerator, you must include it in your pre-award technical proposal submittals—specifically within the Chipping and Slash Treatment section of your Technical Approach— along with supporting information on environmental compliance, fire-risk mitigation, emissions control, and operational safety. The Government will evaluate the proposed method for compatibility with site restrictions, air-quality requirements, and project safety standards before determining acceptability.

QUESTION:Can we extract salt cedar root balls and masticate behind them instead of mowing first access? We usually extract with excavators and then masticate the material afterwards to ensure we dont miss rooted areas that can get covered with mowed material ANSWER: The PWS requires a mowing-first workflow to expose salt cedar crowns prior to extraction.

Extracting salt cedar root balls with excavators and then masticating behind them is not automatically approved but may be proposed as an alternate method. Any alternate sequencing must be submitted in your Mechanical Treatment Management Plan and must demonstrate that the approach fully removes all root crowns, maintains visibility, prevents coverage of intact crowns with biomass, and meets all PWS safety, environmental, and quality-assurance requirements. The Government will evaluate and determine acceptability during pre-award review.

QUESTION:Can we use drone ariel photos for monitoring progress reporting?

ANSWER: Yes, drone aerial photos can be used for monitoring and progress reporting. UAV imagery is acceptable as long as it is geo-tagged, integrated into your GIS progress documentation, and included in your Quality Assurance & Recordkeeping Plan. Drone photos may supplement or enhance required GPS/GNSS photo-point records and can be used throughout mechanical and herbicide operations to verify progress, provided all imagery meets PWS clarity, accuracy, and reporting standards.

QUESTION:If we can use Air curtain, do we have to wait for the 30 day drying period?

ANSWER: An aircurtain burner is not automatically approved for this project. The PWS does not authorize incineration or aircurtain burning as a standard slashtreatment option, and therefore any use of an aircurtain system must be formally proposed in your preaward technical submittals. If you propose an aircurtain burner, the Government will review it for environmental compliance, firerisk mitigation, airquality considerations, and overall compatibility with project requirements.

QUESTION: Can we use an air curtain/incinerator to remove the oversized biomass or does it have to be masticated?

ANSWER: Contractors wishing to use alternative slash-treatment methods must submit a complete Slash Treatment Method Variance Request as part of the Pre-Award Technical Submittals (PWS Section 5.2.1), including:

o Technical Description

▪ Equipment type (e.g., air-curtain burner, incinerator, etc)

▪ Operating parameters, staging needs, fuel-moisture assumptions

▪ Processing rates and capacity o Operational Workflow

▪ Step-by-step sequencing

▪ Root-crown exposure and verification method

▪ Biomass handling and feed procedures

▪ Drying periods (if applicable) o Environmental Compliance Documentation

▪ Air-quality and particulate-control considerations

▪ Burn permitting from Sierra County Dispatch/ Caballo Fire Department

▪ ESA/MBTA timing constraints

▪ Cultural resource protection measures o Safety and Fire-Control Measures

▪ Fire-prevention controls (spark arrestors, emergency response, exclusion zones)

▪ Weather restrictions and shutdown triggers

▪ Heat-source containment and ash handling o Quality Assurance & Recordkeeping

▪ Monitoring methods

▪ Photo/GIS documentation

▪ Inspection procedures

Government Review and Approval The Government will evaluate variance requests based on:

o Compliance with PWS mechanical, environmental, and safety specifications o Risk to air-quality, wildfire potential, and environmental resources o Operational suitability for site conditions o Impacts on production rates and quality assurance

Alternative methods will be considered during preaward evaluation; however, they may only be implemented if the Government grants written approval. Contractors should not assume acceptance of any proposed variance, and no alternative method may be used until formal authorization is issued by the Contracting Officer.

Revocation of Variance Approval Approved variances may be revoked if the method:

o Fails to meet performance expectations o Causes environmental or safety concerns o Creates unacceptable smoke or particulate release o Results in buried crowns or incomplete mechanical removal

Work must revert immediately to standard PWS methods upon revocation at no additional contract cost.

QUESTION:Do we identify the onsite use area or will it be provided and how big is it?

ANSWER: Contractor Site Use will be located near the southwestern corner of Parcel D. The Government will designate the Onsite Contractor Use Area up to 5 acres; however, contractors must identify their anticipated space needs in the pre-award Site Use Plan. Because contractor proposals may vary in equipment size, fleet composition, staging requirements, chipper/masticator configurations, storage needs, or crew support facilities, each offeror must clearly define the contractor use needs in the proposal. The Government will review this information and assign an approved staging/laydown area that is compatible with environmental constraints and the overall project Site Use Plan.