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This document is Amendment 0011 to Solicitation N6247325R3443 for a Design-Build Military Construction (MILCON) project for a Low Altitude Radio Communication System (LARCS) at Marine Air Ground Task Force Training Command (MAGTFTC) in Twentynine Palms, CA. The amendment makes multiple significant modifications, including: deleting several contract clauses, updating the installation schedule, adding a Google Earth route file and pre-proposal conference slides, modifying range access instructions, establishing detailed drone usage protocols, clarifying site security requirements for materials and equipment, and revising fencing specifications. Key changes include new requirements for drone operations (such as pilot certifications, cybersecurity documentation, and operational procedures), site security guidelines that limit contractor access to daylight hours, and specifics on road access routes between checkpoints with vehicle type restrictions on certain paths.

The amendment also introduces additional details about helicopter services, noting that NAVSEA is using Rogers Helicopter and will offer limited joint helicopter service during the contractor's inspection and design phase. Fencing specifications were updated to require zinc-coated steel chain link fabric at least 7 feet high, with additional protective measures like outward-facing barbed wire outriggers. The document emphasizes that the contractor will be responsible for ensuring compliance with all regulatory requirements and assumes liability for materials and equipment left unattended, with only limited government security patrols available.

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SOLICITATION N6247325R3443

AMENDMENT 0011

AMENDMENT 0011, SOLICITATION NO. N6247325R3443, DESIGN-BUILD MILCON P1241

LOW ALTITUDE RADIO COMMUNICATION SYSTEM (LARCS) COMMUNICATION

TOWERS FOR MARINE AIR GROUND TASK FORCE TRAINING COMMAND (MAGTFTC)

TWENTYNINE PALMS, CA

Date: September 10, 2025

The purpose of this Amendment is to revise the Phase Two RFP Parts 1-6 as follows:

1. Delete the following Conditions of the Contract clauses as follows:

DELETE:

CLAUSES INCORPORATED BY REFERENCE

52.236-4, PHYSICAL DATA

52.236-26, PRECONSTRUCTION CONFERENCE

52.236-27, SITE VISIT (CONSTRUCTION)

52.236-28, PREPARATION OF PROPOSALS-CONSTRUCTION

CLAUSES INCORPORATED BY FULL TEXT

52.236-1 PERFORMANCE OF WORK BY THE CONTRACTOR

2. Modify RFP PART 6 ATTACHMENTS in response to RFI 03 & 74 as follows:

DELETE:

DOC 02__P1241 Installation Schedule (v0.33 20250612 1100 PDT wrw)

ADD ATTACHMENT:

DOC 02__P1241 Installation Schedule (v0.34 20250627 1000 PDT wrw)

NOTE: The only revision to previous version of this document is that the East Microwave Update Schedule is expanded on page one (1). This does not provide any additional information regarding the MILCON contract.

3. Modify RFP PART 6 ATTACHMENTS, in response to RFI 15 as follows:

ADD ATTACHMENT:

DOC 11__P1241_LARCS-RTE_Google Earth_20250731_updated20250905.kmz

4. Modify RFP PART 6 ATTACHMENTS, in response to RFI 73 as follows:

ADD ATTACHMENT:

DOC 12__P1241_PreProposalConference Virtual Site Visit_Slides_20250731

5. Modify RFP PART 3, CHAPTER 1, PROJECT DESCRIPTION, section RANGE ACCESS in response to RFI 15 as follows:

ADD: the following paragraph as 3rd subsection of RANGE ACCESS.

(First subsection Authorization to Access to Installation, and second subsection Access Road Improvements by the Installation were both added via Amendment 00100.)

Travel Routes between RTAMS to Checkpoints (CP). Refer to Part 6 Attachments of this RFP for the keyhole markup language zipped (kmz) file, “DOC 11 P1241_LARCS-RTE_Google Earth_20250905.kmz” containing P1241 OP sites, CP staging areas, range designated routes and other project point of interests.

The following are the general route directions with approximate distance travelled, estimated travel time, road conditions and other pertinent information. Use the embedded kmz route in yellow, “Contractor Route,” which shows exact vehicle paths.

Checkpoint 13: RTAMS to CP-13. Route: 220 Highway. Distance: 15.1 miles. Travel time:

36.24 minutes. Vehicles: Route can support all vehicle types.

Checkpoint 51: RTAMS to CP-51. Distance: 28 miles. Travel Time: 1 hour 29 minutes.

Vehicles: Route is heavily rutted, very rocky, deep soft sand and thus will not support tractor trailers.

Checkpoint 51 to RTAMS: CP -51 to Amboy Road, to Main Gate, to Del Valle Road, to Rifle Range Road, to RTAMS. Distance: 52 miles. Travel time: 1 hour 16 minutes. Vehicles:

Route can support all vehicle types.

Checkpoint 78: RTAMS to CP-78. Distance: 39.27 miles. Travel time: 98 minutes. Vehicles:

Route will not support tractor trailer.

Checkpoint 69: RTAMS to CP-69. Route: Main Gate, Indian, Lear, Yucca Mesa, Buena Vista, 247, Bessemer Mine Road. Distance: 76.1 miles. Travel time: 2 hours 30 minutes. Vehicles:

Route can support all vehicle types.

Checkpoint 69 to RTAMS.: CP-69 through Camp Wilson via Hardball. Distance: 44.3 miles.

Travel time: 1 hour 54 minutes. Vehicles: Route will not support tractor trailer vehicles.

Checkpoint 64: RTAMS to CP-64. Route: main gate, Indian, Lear, Yucca Mesa, Buena Vista, 247, Bessemer Mine Road. Distance: 74.6 miles. Travel time: 2 hours 20 minutes. Vehicles:

Route can support all vehicle types.

6. Modify RFP PART 3, CHAPTER 1, PROJECT DESCRIPTION, section DESIGN

CONSIDERATION, Drone Use For Topographic Mapping in response to RFI 75 as follows:

ADD: (as paragraph 2)

Drone Use For Topographic Mapping and Tower Inspections

A. Pre-Flight Documentation & Submissions Prior to any flight operations, the Contractor shall submit the following documentation to the MAGTFTC G3 for review and approval:

1. Pilot Certification: Valid and current pilot certification for the specific unmanned aircraft system (UAS) platform to be flown.

2. Airworthiness Certificate: The platform’s Initial Flight Clearance (IFC) or an equivalent

Certificate of Airworthiness.

3. Legal Agreements: Signed deviation and hold harmless letters.

4. sUAS Compliance Letter: A letter certifying the Small Unmanned Aircraft Systems (sUAS) complies with all applicable regulations.

5. Cybersecurity Package: Documentation demonstrating the platform's cybersecurity resilience and authorization, to include:

A current Enterprise Mission Assurance Support Service (eMASS) Authority to

Operate (ATO) certificate.

A Threat Mitigation Plan that specifically addresses vulnerabilities such as GPS spoofing, communication link interception, and signal jamming.

A description of the system's authentication and authorization protocols to prevent unauthorized access.

6. Lost Link Procedures: The platform’s documented procedures for loss of command and control link.

7. Spectrum Authorization: Verification from the G6 spectrum manager for the platform’s operating frequency.

B. Platform & Equipment Requirements The UAS platform and all associated equipment must meet the following specifications:

1. Approved Components: The platform and its components will be assessed to ensure they meet the approved components list. Note: Commercial off-the-shelf (COTS) DJI drones that do not have RIZER software are not authorized for use on military installations.

2. GPS Restriction: All survey equipment is prohibited from having a GPS feature that displays or records coordinates.

C. Operational & Safety Procedures The Contractor shall adhere to the following procedures for all flight operations:

1. Personnel Training: All personnel involved in the operation must possess current training certifications in range safety, desert survival, and unexploded ordnance (UXO).

2. Range Scheduling: The specific training area must be reserved through appropriate channels. The range scheduling request must list the activity as "UAS training."

3. Airspace Notification:

Pre-Flight: Before launch, the contractor must notify Bearmat (Range Control) of the intended flight's maximum Above Ground Level (AGL) altitude.

Post-Flight: After flight operations are complete, the contractor must notify Bearmat that the airspace is clear.

4. Government Oversight: A Government representative (e.g., from NAVFAC) must be able to review the live video feed during the survey to ensure footage is strictly limited to the designated project area.

7. Modify RFP PART 3, CHAPTER 1, PROJECT DESCRIPTION, section CONSTRUCTIOIN CONSIDERATION, paragraph Range Access, subparagraph Access Road Improvement in response to RFI 79 as follows:

ADD: (as paragraph 3)

Access Road Improvements by the Installation G-3 (Range Training Area Management Support - RTAMS) will improve existing access roads to the Check Points (CP’s). However, these improvements are subject to specific limitations.

1. Scope of Base Improvements The existing unpaved roads are maintained to accommodate vehicles up to 10 feet wide. The installation will provide basic road maintenance to support access. This work includes:

a. Road Grading: Leveling and shaping the existing road surfaces.

b. Road Base: Adding and compacting road base material where necessary to improve stability.

2. Limitations G-3/RTAMS can only improve the existing road footprint. We cannot create new roads or widen existing roads without a formal environmental review and approval, which is not within the scope of this project.

8. Modify RFP PART 3, CHAPTER 1, PROJECT DESCRIPTION, section CONSTRUCTIOIN CONSIDERATION in response to RFI 83 as follows:

ADD: (as new section after Daily Check-in & Check-out Requirements)

Site Security for Materials and Equipment. The Government will not provide dedicated 24/7 security for the Contractor's materials and equipment at the Check points (CP’s). Furthermore, it is important to note that all Contractor personnel are restricted to the range areas between sunrise and sunset only. Consequently, the Contractor will not be permitted to station their own security guards at the CP’s during nighttime hours.

Government-Provided Safety Measures While no dedicated or overnight personnel are available, the Government will implement the following measures:

a. No-Fire Area Designation: G-3 will designate a "No-Fire Area" around the CP’s where materials and equipment are staged. This designation prohibits any live-fire training exercises within the specified zone, protecting the contractor's assets from accidental damage related to range activities.

b. Existing PMO Patrols: The Provost Marshal's Office (PMO) conducts routine patrols of the range areas. Patrols occur 4-5 times per week during non-training periods and increase to 24/7 coverage during scheduled training events. These patrols provide a general security presence but are not dedicated to monitoring contractor assets.

Contractor Responsibility and Risk Given the range access restrictions, the Contractor must secure their property within the permitted work hours. The Contractor must assume all liability for materials and equipment left unattended at the CP’s overnight. Any costs associated with mitigating this risk (e.g., security fencing, enhanced locks, insurance, or removing sensitive items daily) should be included in the Contractor's cost proposal.

9. Modify RFP PART 3, CHAPTER 1, PROJECT DESCRIPTION, section CONSTRUCTIOIN

CONSIDERATION, subsection Helicopter Services as added response to RFI 18 as follows:

ADD: (to paragraph 3)

FROM:

Twentynine Palms MCAGCC/ MAGTFTC has used the following helicopter flight services in the past that were compliant to 29 Palms MAGTFTC, FAA and CARB compliant. Government provides this information for Contractor reference reflecting approved 29P helicopter services compliant with base, local, regional regulatory requirements. Government does not endorse any of these service companies. Contractor shall be responsible for their helicopter services to be fully compliant on all regulatory requirements.

TO:

Twentynine Palms MCAGCC/ MAGTFTC has used the following helicopter flight services in the past that were compliant to 29 Palms MAGTFTC, FAA and CARB compliant. Government provides this information for Contractor reference reflecting approved 29P helicopter services compliant with base, local, regional regulatory requirements. Government does not endorse any of these service companies. Contractor shall be responsible for their helicopter services to be fully compliant on all regulatory requirements. NAVSEA is using the following helicopter service for their construction phase of the collateral equipment installation of this project. During their construction phase, NAVSEA is offering no cost limited joint use of helicopter services during part of the Contractor’s inspection and design phase. See section on Joint Use of Helicopter Services in this chapter of the

RFP.

Rogers Helicopter 5508 E Aircorp Way Fresno, CA 93727 https://rogershelicopters.com/

10. Modify RFP PART 3, CHAPTER 6, ESR G204001 Fencing & Gates in response to RFI 76 and 77 as follows:

REPLACE existing paragraph 1 of 2 with updated new paragraph 1 of 2.

FROM:

Provide commercial (CH40) chain link fence of at least 9 feet (2.74 m) high. Provide a polyvinyl chloride (PVC) coated over zinc-coated steel fencing components in accordance with FS RR-F-191/1, Type IV for the fencing system. Provide top and bottom tension wires and top and bottom rails. For the security fence, provide one single line fence surrounding the restricted area. Provide security clear zones as required. Ensure that the fabric height is at least 8 feet (2.44 m). Install outriggers facing outward except when the fence must be mounted directly on the property line. Design security fencing in accordance with UFC 4-022-03 and MCO 5530.14A whichever is more stringent, Security Fences and Gates. Grounding and bonding of the fencing must be in accordance with the National Electric Safety Code (NESC) - IEEE C2, MCO5530.14A UFC 4-022-03.

The two sites in the Johnson Valley, OP Mine and OP Galway are to receive new fencing to enclose the sites due to its proximity to the public highway. The OP Crampton existing security fence requires repair in accordance with original specifications of the fence.

TO:

Provide zinc-coated steel fencing components in accordance with FS RR-F-191/1, Type 1 for the fencing system of nine-gauge chain link fabric, Ensure that the fabric height is at least 7 feet (2.1 m), Provide top and bottom tension wires and top and bottom rails. Provide additional one foot top guard consisting of 12 inch to15 inch outward facing outriggers equipped with three strands of barbed wire. For additional protection against erosion damage provide an added one foot of nine-gauge chain link fabric to be buried or utilization of a concrete footer. Provide gates to match fence fabric height, with an additional 1 ft (305 mm) of three strand barbed wire added to the height. Design of security fencing to be in accordance with MCO 5530.14A and UFC 4-022-03 whichever is more stringent.

The two sites in the Johnson Valley, OP Mine and OP Galway are to receive new fencing to enclose the sites due to its proximity to the public highway. The OP Crampton existing security fence requires repair in accordance with original specifications of the fence.

NOTES:

1. The offeror must acknowledge receipt of all amendments on the offer schedule.

2. All other paragraphs, provisions, and conditions to this proposed contract remain unchanged.

ATTACHMENTS:

(1) Phase Two_ AMND 0011_DOC 02__P1241 Installation Schedule (v0.34 20250627 1000 PDT wrw)

(2) Phase Two_ AMND 0011_DOC 11__P1241_LARCS-RTE_Google Earth_20250731_updated20250905.kmz

(3) Phase Two_ AMND 0011_DOC 12__P1241_PreProposalConference Virtual Site Visit_Slides_20250731

File details come from the government source that posted it. Updated .