Attachment 1 - 2026 SCAN Maintenance Statement of Work.pdf

Statement of Work (SOW) for

Project: Soil Climate Analysis Network (SCAN) Maintenance

GENERAL INFORMATION

1.0 Scope: The United States Department of Agriculture (USDA) National Resources Conservation Service (NRCS) National Water and Climate Center (NWCC) operates and maintains the Soil Climate Analysis Network (SCAN) stations across the U.S., including Alaska, Hawaii, Puerto Rico and the U.S. Virgin Islands, with a focus on U.S. agricultural areas.

Currently, there are 213 SCAN stations that provide soil and climatic data in near real-time that are used for agricultural practices and climate analysis. In addition to the SCAN stations, the agency is currently involved with assisting tribes in the installation of Tribal SCAN (TSCAN) stations on lands across the U.S., focused on agricultural lands situated on Tribal lands in the U.S.

SCAN is an essential tool for assessing climatic conditions, carrying out precision agriculture and drought mitigation. The Under Secretary for USDA held a workshop in January 2020 to bring together other federal agencies in supporting SCAN as a tool with multiple applications that fits in with mission priorities. The network has generated widespread interest across government agencies, and the data provides a unique representation of local, regional and national soil characterizations and hydrology. To accurately assess conditions, a long-term record is required for each site that spans decades, and therefore it is critical to properly maintain the current network while expanding the number of stations in areas with sparse data coverage.

2.0 Background: SCAN data collection station sites collect hourly information on soil moisture content and soil temperature at standard depths (2, 4, 8, 20, and 40 inches), air temperature, relative humidity, solar radiation, wind speed/ direction and liquid precipitation. Each station consists of a tower (typically 20 ft high), electronics box and soil probes. The sites utilize sensors for data collection and use primarily Cellular Telemetry, but in some cases, satellite transmitters are used. Sites are powered by 12-volt batteries that are charged by solar panels. Each site requires annual maintenance which includes changing out certain site components, maintaining site vegetation and making minor repairs. There are some sites that may require significant repairs that will require specialized experience and expertise related to electronics and the physical ability to climb towers and handle heavy and awkward loads (e.g., batteries, antennas, and solar panels).

SCAN is the largest comprehensive soil moisture monitoring network in existence and the only broad-scale network established with the purpose of collecting soil climate (temperature and moisture) data. There are many requests for new SCAN stations all the time from federal partners and the NRCS States across the U.S. In addition, there are guidelines set down by the Chief of NRCS as outlined in National Instruction 450-303-NI, 1st Ed., Amend. 1, Mar 2018) 303-1 – Guidance on Soil Climate Analysis Network (SCAN) Station Investment related to external requests for new SCAN stations.

CONTRACTOR REQUIREMENTS

3.0 Technical Requirements/Tasks: The Contractor shall perform all duties as prescribed in the SCAN site punch list to the standards defined by the SCAN Maintenance Manual.

4.0 Government Furnished: All SCAN Site components and replacement parts will be provided by the government. Field verification devices will also be provided by the government.

5.0 Deliverables / Schedule:

A pre-performance meeting is required within 21 days of award and NLT the 3rd week of October 2025, to discuss the finer details on the statement of work and coordinate any additional purchases that may be a result of this further examination. This ensures that initial coordination and logistics planning can occur with enough time to then furnish the components that the Government provides as part of this work.

Calibration and furnishing of components for the required maintenance begins within 60 days of award, NLT the 1st week of November 2025, and continues through the performance period as work is completed and as components for calibration are returned from the field. The Government calibrates and provides components on a rotational basis as the cost of each unit is significant.

Logistics coordination meeting to occur within 30 days of award and NLT the last week of November 2025 to lay out transfer of tools and GFE, whether by shipment or pickup, negotiation of supply and inventory shipping and locations for the staging of equipment.

Pre-trip planning report. A separate logistics meeting is then required at least one month prior to work being accomplished in each region as described in the 2026 SCAN Maintenance Contract Punchlist (attachment). The first round of work will begin in January 2026 with an initial coordination meeting to occur NLT the 1st week of December 2025. Components are distributed to the appropriate staging area for the sites being supported during that round of work.

Two weeks prior to scheduled work and NLT the 2nd week of December 2025, contractor must reach out to SCAN staff for an updated sensor malfunction list and confirm maintenance schedule or provide updates (if any).

Between 30 days and two weeks prior to scheduled work and NLT the 2nd week of December 2025, contractors must initiate communication with local points of contact such as farmer cooperators, project managers, and NRCS field offices to coordinate site access.

Pre-Trip Planning

1. Site Location Information Most stations are located on Government or university property; however, some stations are located on private land. GPS Required.

2. IMPORTANT: Always contact the landowner prior to going to the SCAN station location.

Key Deliverables Item No.

Deliverable/ Item Title

Description Frequency Reference Delivery Format

Due By

1 Comprehensiv e Site Visit Report

Site Visit Report that details all activities including repair, Maintenance along with site photos before and after.

Completion of Metadata Report

Same Day SCAN Station visit submitted via ArcGIS Survey123 App https://survey 123.arcgis.co m/

ArcGIS Survey123 App via tablet or smart phone

On the same day SCAN site Maintenan ce is completed

6.0 Travel: SCAN site travel is referenced on the punch list and is based on coordinate locations GPS is required.

7.0 Contractor’s Key Personnel:

The Contractor shall provide Field Technicians for continued maintenance of the NRCS SCAN network. The Field Technician shall be able to Climb ladders excavate holes, install sensors and equipment.

The Field Technician shall have ten years’ experience with diagnosing and troubleshooting and repairing electronic equipment in the field. Also, ten years of field experience with installation, maintenance and repair of Campbell Scientific dataloggers, soil moisture probes, telemetry, and weather station instrumentation. The work may take place in extreme environments, mainly hot and humid conditions, but some sites and seasons may be on the cold extreme. Work continues in rainy and windy conditions (if not unsafe). A current Driver’s license is required for this position. Many sites have 4-wheel drive access only so contractors must have access to an appropriate off-road vehicle. The contractor is also responsible for the safety and accountability of all supplies and equipment during transportation to the site.

8.0 Security Requirements: N/A

9.0 Data Rights: All data produced by the SCAN network is property of NRCS

10.0 Section 508 – Electronic and Information Technology Standards: N/A

Attachment:

SCAN site Maintenance punch list with locations. Please note that Maintenance must adhere to the timeline specified on the Scan Site Maintenance Punchlist. Please make note of the additional bullet item requirements on the Scan Site Maintenance Punchlist.

The Tools List that the contractor will need is referenced in the SCAN Maintenance Manual page 7 and 8

SCAN Site Maintenance Punchlist 124 Sites 2026 Contract

• Contractor must coordinate a logistics meeting with SCAN staff to discuss scheduling and shipping details at least one month prior to the start of work.

• One week prior to scheduled work, contractor must reach out to SCAN staff for an updated sensor malfunction list and confirm maintenance schedule or provide updates (if any).

• Site maintenance must be completed within the maintenance windows listed on the punchlist.

o If special circumstances arise for date of completion for any work, it must be discussed with and approved by SCAN staff.

• Random audit of work - Proof of checklist items will be required in the form of photos taken after the completion of work and emailed to SCAN staff, when requested.

o These are separate from photos required to complete Survey123 and can include such things as proof of sensor level, sensor installation, etc.

• Take pictures of surrounding area if any debris and waste are present and upload photos to site issue section in Survey123

• Return shipping will be paid for by the contractor and must be coordinated with SCAN staff.

o All return items must be packaged with care and, where indicated, in accordance with the punchlist instructions.

o Ensure to label returned components with the site they were taken out of. Do not write on the component or box. A taped sticky note will suffice.

SCAN Site Maintenance Punchlist 124 Sites 2026 Contract

Watkinsville #1 Wedowee

NB: 5/2026

NLT: 9/2026

Lehman Levelland

Reese Center

Johnson Farm

NB: 9/2026

NLT: 12/2026

NB: 4/2026

NLT: 8/2026

NB: 2/2026

NLT: 6/2026

NB: 10/2026

NLT: 12/2026

NB: 6/2026

NLT: 10/2026

NB: 4/2026

NLT: 8/2026

NB: 9/2026

NLT: 12/2026

NB: 1/2026

NLT: 5/2026

NB: 10/2026

NLT: 12/2026

NB: 7/2026

NLT: 11/2026

NB: 3/2026

NLT: 7/2026

SCAN Site Maintenance Punchlist 124 Sites 2026 Contract

SCAN Site Maintenance Punchlist 124 Sites 2026 Contract

2083 – Uapb Campus-PB, AR Analog CR1000X (2021) Not Before Complete NLT STANDARD SITE CONFIGURATION Jan 2026 May 2026

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Check all analog soil sensors and replace any nonfunctioning sensors

2091 – Uapb Dewitt, AR Analog CR1000X (2024) Not Before Complete NLT

STANDARD SITE CONFIGURATION Jan 2026 May 2026

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Replace Pyranometer (2024) for calibration. Return old sensor;

• Multiplexer (2004) – replace with 16/32B, if not already present, recycle old component;

• Check all analog soil sensors and replace any nonfunctioning sensors

2085 – Uapb-Earle, AR Analog CR1000X (2021 good) Not Before Complete NLT

NEMA REPLACEMENT, tower has severe lean, and needs rebuild Jan 2026 May 2026

• Shore up tower with more concrete, if necessary. Keep currently installed solar panel (2024);

• Replace NEMA with new NEMA. Move existing RV50X transmitter, battery (2024 C&D), and enclosure RH sensor (2024) to new NEMA;

o return internal components, minus the transmitter, to SCAN staff;

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Replace Pyranometer (2024) for calibration. Return old sensor;

• Check all analog soil sensors and replace any nonfunctioning sensors

2030 – Uapb-Lonoke Farm, AR SDI-12 CR1000X (2021 good) Not Before Complete NLT

NON-STANDARD with shelter & 20’ Rohn tower Jan 2026 May 2026

• Install 5’ cross-arm on tower at highest available location. Use Hollaender clamp on end to insert 12” aluminum pipe. Install ST300 temperature sensor inside RAD06 shield on vertical pipe;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Replace Pyranometer (2024) for calibration. Return old sensor;

• Check all SDI-12 soil sensors and replace any nonfunctioning sensors

2084 – Uapb-Marianna, AR Analog CR1000X (2025) Not Before Complete NLT

Has new NEMA (2025) Jan 2026 May 2026

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Replace Pyranometer (2024) for calibration. Return old sensor;

• Tipping bucket - Replace (2012), recycle old sensor;

SCAN Site Maintenance Punchlist 124 Sites 2026 Contract

2090 – Uapb Point Remove, AR Analog CR1000X (2024) Not Before Complete NLT Has new NEMA (2024) Jan 2026 May 2026

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Replace Pyranometer (2024) for calibration. Return old sensor;

• Check all analog soil sensors and replace any nonfunctioning sensors

2032 – Beasley Lake, MS Analog CR1000X (2025) Not Before Complete NLT

Has new NEMA (2025) Jan 2026 May 2026

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Replace Pyranometer (2024) for calibration. Return old sensor;

• Enclosure RH – install new CS210 (unsure of age);

• Check all analog soil sensors and replace any nonfunctioning sensors

2024 – Goodwin Ck Pasture, MS Analog CR1000X (2025) Not Before Complete NLT

Has new NEMA (2025) Jan 2026 May 2026

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Replace Pyranometer (2024) for calibration. Return old sensor;

• Replace rusted soils NEMA, if inventory permits;

• Check all analog soil sensors and replace any nonfunctioning sensors

2025 – Goodwin CK Timber, MS Analog CR1000X (2025) Not Before Complete NLT

Has new NEMA (2025) Jan 2026 May 2026

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Replace Pyranometer (2024) for calibration. Return old sensor;

• Check all analog soil sensors and replace any nonfunctioning sensors Site visit note: Use a brushcutter to clear vegetation.

2110 – Mayday, MS Analog CR1000X (2021) Not Before Complete NLT

NEMA REPLACEMENT Jan 2026 May 2026

• Install new solar panel, dispose of old panel(s) appropriately;

• Replace NEMA with new NEMA. Move existing RV50X transmitter, battery (2021 C&D), and enclosure RH sensor (2024) to new NEMA;

o return internal components, minus the transmitter, to SCAN staff;

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Check all other analog soil sensors and replace any nonfunctioning sensors Site visit note: sensors are 15 ft above ground

SCAN Site Maintenance Punchlist 124 Sites 2026 Contract

2087 – North Issaquena, MS SDI-12 CR1000X (2024) Not Before Complete NLT

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Tipping bucket - Replace (2013), recycle old sensor;

• Check all SDI-12 soil sensors and replace any nonfunctioning sensors

2033 – Onward, MS Analog CR1000X (2024) Not Before Complete NLT

Has new NEMA (2024) Jan 2026 May 2026

• Install ST300 temperature sensor inside RAD06 shield on empty arm space opposite the HMP155;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Replace Pyranometer (2024) for calibration. Return old sensor;

• Check all analog soil sensors and replace any nonfunctioning sensors

2046 – Perthshire, MS SDI-12 CR1000X (2025) Not Before Complete NLT

NEMA REPLACEMENT Jan 2026 May 2026

• Install new solar panel, dispose of old panel(s) appropriately;

• Replace NEMA with new NEMA. Move existing RV50X transmitter, battery (2024 C&D), and enclosure RH sensor (2024) to new NEMA;

o return internal components, minus the transmitter, to SCAN staff;

• Remove battery box and dispose of cabinet appropriately;

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Check all SDI-12 soil sensors and replace any nonfunctioning sensors (4”, 20” and 40” are 259 series)

2109 – Sandy Ridge, MS Analog CR1000X (2024) Not Before Complete NLT

STANDARD SITE CONFIGURATION Jan 2026 May 2026

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Multiplexer (2005) – replace with 16/32B, recycle old component;

• Check all analog soil sensors and replace any nonfunctioning sensors

2070 – Scott, MS SDI-12 CR1000X (2024) Not Before Complete NLT

NEMA REPLACEMENT Jan 2026 May 2026

• Perform any additional tower maintenance as appropriate;

• Install new solar panel, dispose of old panel(s) appropriately;

• Replace NEMA with new NEMA. Move existing RV50X transmitter, battery (2021 C&D), and enclosure RH sensor (2025) to new NEMA;

o return internal components, minus the transmitter, to SCAN staff;

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Check all SDI-12 soil sensors and replace any nonfunctioning sensors Site visit note: use a brushcutter to clear vegetation, if needed.

SCAN Site Maintenance Punchlist 124 Sites 2026 Contract

2086 – Silver City, MS Analog CR1000X (2024) Not Before Complete NLT

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Replace Pyranometer (2024) for calibration. Return old sensor;

• Check all analog soil sensors and replace any nonfunctioning sensors

2034 – Tunica, MS SDI-12 CR1000X (2025) Not Before Complete NLT Has new NEMA (2025) Jan 2026 May 2026

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Replace Pyranometer (2024) for calibration. Return old sensor;

• Check all SDI-12 soil sensors and replace any nonfunctioning sensors (2”, 8” and 40” are 259 series)

2035 – Vance, MS Analog CR1000X (2024) Not Before Complete NLT

NEMA REPLACEMENT Jan 2026 May 2026

• Shore up tower with concrete, if needed;

• Install new solar panel, dispose of old panel(s) appropriately;

• Replace NEMA with new NEMA. Move existing RV50X transmitter, battery (2024 C&D), and enclosure RH sensor (2024) to new NEMA;

o return internal components, minus the transmitter, to SCAN staff;

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Check all analog soil sensors and replace any nonfunctioning sensors

2057 – AAMU-JTG, AL Analog CR1000X (2025) Not Before Complete NLT

Has new NEMA (2025) Feb 2026 Jun 2026

• Install ST300 temperature sensor inside RAD06 shield on empty arm space opposite the HMP155;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Check all analog soil sensors and replace any nonfunctioning sensors

2078 – Bragg Farm, AL Analog CR1000X (2025) Not Before Complete NLT

Has new NEMA (2025) Feb 2026 Jun 2026

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

SCAN Site Maintenance Punchlist 124 Sites 2026 Contract

2113 – Cullman-NAHRC, AL Analog CR1000X (2024) Not Before Complete NLT Has new NEMA (2024) Feb 2026 Jun 2026

• Replace battery – 2023 (75AH deep cycle for wheelchairs);

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

Site visit note: use a brushcutter to clear vegetation

2055 – Hodges, AL SDI-12 CR1000X (2024) Not Before Complete NLT

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Check all SDI-12 soil sensors and replace any nonfunctioning sensors

• Needs to have ground rods installed (per site visit notes)

2173 – Isbell Farms, AL GOES SDI-12 CR1000X (2025) Not Before Complete NLT

Has new NEMA (2025) Feb 2026 Jun 2026

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Check all SDI-12 soil sensors and replace any nonfunctioning sensors – all sensors sending error codes 2” (209791 2023), 4” (209725 2023), 8” (236546

2023), 20” (236483 2023), and 40” (236556 2023)

2056 – Stanley Farm, AL Analog CR1000X (2024) Not Before Complete NLT

Has new NEMA (2024) Feb 2026 Jun 2026

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Replace Pyranometer (2024) for calibration. Return old sensor;

• Check all analog soil sensors and replace any nonfunctioning sensors Site visit note: Vegetation management and tree removal required. The vines at this site are likely poison ivy (or poison sumac?). These are leafless in the winter—and therefore harder to identify—but will still cause a bad rash.

2179 – Sudduth Farms, AL SDI-12 CR1000X (2024) Not Before Complete NLT

Has new NEMA (2024) Feb 2026 Jun 2026

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Needs a ground rod;

Site visit note: Vegetation management and tree removal required

SCAN Site Maintenance Punchlist 124 Sites 2026 Contract

2053 – Wtars, AL Analog CR1000X (2025) Not Before Complete NLT Has new NEMA (2025) Feb 2026 Jun 2026

• Install cross-arms on 20’ tower and move all above ground sensors to new tower locations;

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Check all analog soil sensors and replace any nonfunctioning sensors and keep soils in current location

2013 – Watkinsville #1, GA SDI-12 CR1000X (2020) Not Before Complete NLT

NON-STANDARD with shelter & 20’ Rohn tower Feb 2026 Jun 2026

• Install 5’ cross-arm on tower at highest available location. Use Hollaender clamp on end to insert 12” aluminum pipe. Install ST300 temperature sensor inside RAD06 shield on vertical pipe;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Check all SDI-12 soil sensors and replace any nonfunctioning sensors;

• Replace rusted out soils NEMA, if inventory permits Site visit note: Vegetation management badly needed

2079 – Mammoth Cave, KY Analog CR1000X (2025) Not Before Complete NLT

Has new NEMA (2025) Feb 2026 Jun 2026

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Tipping bucket (installed in 2021 but is 09 model); Replace TB and TB cable with more robust cable, as needed, recycle old sensor;

• Check all analog soil sensors and replace any nonfunctioning sensors

2005 – Princeton #1, KY Analog CR1000X (2023) Not Before Complete NLT

Has new NEMA (2023) Feb 2026 Jun 2026

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

2076 – Allen Farms, TN Analog CR1000X (2024) Not Before Complete NLT

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

Site visit note: Use brushcutter to clear vegetation from station enclosure and apply pesticide. Excessive ants and hornets. Enclosure area 20ft by 20ft

SCAN Site Maintenance Punchlist 124 Sites 2026 Contract

2077 – Eastview Farm, TN Analog CR1000X (2024) Not Before Complete NLT

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

Site visit note: woody vine growing in site area. Will take considerable time to continue to clear this out.

2075 – McAllister Farm, TN Analog CR1000X (2021) Not Before Complete NLT

NEMA REPLACEMENT Feb 2026 Jun 2026

• Install new solar panel, dispose of old panel(s) appropriately;

• Replace NEMA with new NEMA. Move existing RV50X transmitter, battery (2024 C&D), and enclosure RH sensor (2024) to new NEMA;

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Tipping bucket (2024) – Replace TB cable with more robust cable, as needed;

• Replace rebuilt wind sensor, recycle old sensor;

• Check all analog soil sensors and replace any nonfunctioning sensors

2177 – Broad Acres, AL SDI-12 CR1000X (2024) Not Before Complete NLT

Has new NEMA (2024) Mar 2026 Jul 2026

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Enclosure RH – install new CS210 (unsure of age);

• Check all SDI-12 soil sensors and replace any nonfunctioning sensors Site visit note: Need to keep removing trees, use a brushcutter to clear vegetation

2174 – Dee River Ranch, AL SDI-12 CR1000X (2023) Not Before Complete NLT

STANDARD SITE CONFIGURATION but tower has severe lean Mar 2026 Jul 2026

• Shore up tower with more concrete and/or new bolts to stabilize;

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Replace Pyranometer (2024) for calibration. Return old sensor;

• Replace (2010) wind sensor, recycle old sensor;

• Check all SDI-12 soil sensors and replace any nonfunctioning sensors

2114 – Livingston-UWA, AL SDI-12 CR1000X (2025) Not Before Complete NLT

Has new NEMA (2025) Mar 2026 Jul 2026

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

SCAN Site Maintenance Punchlist 124 Sites 2026 Contract

2178 – Morris Farms, AL SDI-12 CR1000X (2024) Not Before Complete NLT Has new NEMA (2024) Mar 2026 Jul 2026

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Enclosure RH – install new CS210 (unsure of age);

• Check all SDI-12 soil sensors and replace any nonfunctioning sensors

2176 – Selma, AL SDI-12 CR1000X (2024) Not Before Complete NLT

Has new NEMA (2024) Mar 2026 Jul 2026

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Enclosure RH – install new CS210 (unsure of age);

• Check all SDI-12 soil sensors and replace any nonfunctioning sensors

2115 – Tuskegee, AL Analog CR1000X (2025) Not Before Complete NLT

Has new NEMA (2025) Mar 2026 Jul 2026

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Check all analog soil sensors and replace any nonfunctioning sensors;

Site visit note: Need to bring bow saw or other to continuously cut down pine tree at ground

2175 – Wedowee, AL SDI-12 (4) CR1000X (2025) Not Before Complete NLT

Has new NEMA (2025) Mar 2026 Jul 2026

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Check all SDI-12 soil sensors and replace any nonfunctioning sensors;

Site visit note: Vegetation management badly needed

2064 – Starkville, MS SDI-12 CR1000X (2025) Not Before Complete NLT

Has new NEMA (2025) Mar 2026 Jul 2026

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

SCAN Site Maintenance Punchlist 124 Sites 2026 Contract

2224 – Busby Farm, MO SDI-12 CR1000X (2024) Not Before Complete NLT NONSTANDARD W/short tower and no shelter Apr 2026 Aug 2026

• Ensure battery will fit in upper NEMA. Move battery (2018) to upper NEMA;

o Remove lower battery NEMA, dispose of old cabinet appropriately;

• Install 5’ cross-arm on tower at highest available location. Use Hollaender clamp on end to insert 12” aluminum pipe. Install ST300 temperature sensor inside RAD06 shield on vertical pipe;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Check all other SDI-12 soil sensors and replace any nonfunctioning sensors

2223 – Carver Farm, MO SDI-12 CR1000X (2024) Not Before Complete NLT

• Ensure battery will fit in upper NEMA. Move battery (2018) to upper NEMA;

o Remove lower battery NEMA, dispose of old cabinet appropriately;

• Install 5’ cross-arm on tower at highest available location. Use Hollaender clamp on end to insert 12” aluminum pipe. Install ST300 temperature sensor inside RAD06 shield on vertical pipe;

2195 – CMRB LTAR, MO SDI-12 CR1000X (2024) Not Before Complete NLT

STANDARD SITE CONFIGURATION Apr 2026 Aug 2026

• Ensure battery will fit in upper NEMA. Move battery (2024) to upper NEMA;

o Remove lower battery NEMA, dispose of old cabinet appropriately;

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Check all SDI-12 soil sensors and replace any nonfunctioning sensors

2048 – Dexter, MO Analog CR1000X (2024) Not Before Complete NLT

STANDARD SITE CONFIGURATION Apr 2026 Aug 2026

• Ensure battery will fit in upper NEMA. Move battery (2020) to upper NEMA;

o Remove lower battery NEMA, dispose of old cabinet appropriately;

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Tipping bucket - Replace (2015), recycle old sensor;

• Wind sensor installed in 2022 but has too many zero readings. Please check;

• Enclosure RH – install new CS210 (unsure of age);

SCAN Site Maintenance Punchlist 124 Sites 2026 Contract

2220 – Elsberry PMC, MO SDI-12 CR1000X (2025) Not Before Complete NLT NEMA Replacement Apr 2026 Aug 2026

• Rebuild site to standard specs;

• Install tower with concrete;

• Install new solar panel, dispose of old panel(s) appropriately;

• Install new NEMA. Move existing RV50 transmitter and enclosure RH (2025) to new NEMA;

o return internal components, minus the transmitter, to SCAN staff;

• Install new battery (2015) in NEMA;

• Install two full 10’ cross arms for WS/SR and TB/Temp RH;

• Move wind sensor and pyranometer to new tower locations;

• Install new HMP155 head, body, and shield to new tower location. Return old sensor in protective packaging for calibration;

• Tipping bucket – install in new tower location. Replace (2015), recycle old sensor;

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Check all SDI-12 soil sensors and replace any nonfunctioning sensors

2194 – Journagan Ranch, MO SDI-12 (2 sets 5) CR1000X (2021 – min corrosion) Not Before Complete NLT

STANDARD SITE CONFIGURATION Apr 2026 Aug 2026

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

2230 – LTSP, MO SDI-12 CR1000X (2021) Not Before Complete NLT

• Install 5’ cross-arm on tower at highest available location. Use Hollaender clamp on end to insert 12” aluminum pipe. Install ST300 temperature sensor inside RAD06 shield on vertical pipe;

2225 – Mark Twain, MO SDI-12 CR1000X (2023) Not Before Complete NLT

• Ensure battery will fit in upper NEMA. Move battery (2023 C&D) to upper NEMA;

o Remove lower battery NEMA, dispose of old cabinet appropriately;

• Install 5’ cross-arm on tower at highest available location. Use Hollaender clamp on end to insert 12” aluminum pipe. Install ST300 temperature sensor inside RAD06 shield on vertical pipe;

SCAN Site Maintenance Punchlist 124 Sites 2026 Contract

2060 – Mt Vernon, MO Analog (4 depths) CR1000X (2025) Not Before Complete NLT

• Ensure battery will fit in upper NEMA. Move battery (2024) to upper NEMA;

o Remove lower battery NEMA, dispose of old cabinet appropriately;

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Enclosure RH – install new CS210 (unsure of age);

• Check all analog soil sensors and replace any nonfunctioning sensors

2061 – Powell Gardens, MO Analog CR1000X (2022 – min corrosion) Not Before Complete NLT

STANDARD SITE CONFIGURATION Apr 2026 Aug 2026

• NEMA is too narrow and week to support battery;

• Replace (2015) battery;

• Solar regulator – replace 2002 Sunsaver;

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

2193 – Schell-Osage, MO SDI-12 CR1000X (2021) Not Before Complete NLT

• Ensure battery will fit in upper NEMA. Move battery (2023 C&D) to upper NEMA;

o Remove lower battery NEMA, dispose of old cabinet appropriately;

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Enclosure RH – install new CS210 (unsure of age);

• Check all SDI-12 soil sensors and replace any nonfunctioning sensors

2227 – Shaw Nature, MO SDI-12 CR1000X (2023) Not Before Complete NLT

NONSTANDARD W/short tower and no shelter Apr 2026 Aug 2026

• Ensure battery will fit in upper NEMA. Move battery (2020) to upper NEMA;

o Remove lower battery NEMA, dispose of old cabinet appropriately;

• Install 5’ cross-arm on tower at highest available location. Use Hollaender clamp on end to insert 12” aluminum pipe. Install ST300 temperature sensor inside RAD06 shield on vertical pipe;

• Check all other SDI-12 soil sensors and replace any nonfunctioning sensors

SCAN Site Maintenance Punchlist 124 Sites 2026 Contract

2231 – Sinkin Forest, MO SDI-12 CR1000X (2021) Not Before Complete NLT

• Install 5’ cross-arm on tower at highest available location. Use Hollaender clamp on end to insert 12” aluminum pipe. Install ST300 temperature sensor inside RAD06 shield on vertical pipe;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Check all SDI-12 soil sensors and replace any nonfunctioning sensors

2047 – Spickard, MO Analog CR1000X (2024) Not Before Complete NLT

STANDARD SITE CONFIGURATION Apr 2026 Aug 2026

• Ensure battery will fit in upper NEMA. Install new battery (2015) in upper NEMA;

o Remove lower battery NEMA, dispose of old cabinet and battery(s) appropriately;

• Solar regulator – replace 2001 Sunsaver;

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Tipping bucket - Replace (2015), recycle old sensor;

• Enclosure RH – install new CS210 (unsure of age);

• Check all analog soil sensors and replace any nonfunctioning sensors

2226 – Twin Pines Conservation Area, MO SDI-12 CR1000X (2024) Not Before Complete NLT

NONSTANDARD W/short tower and no shelter Apr 2026 Aug 2026

• Ensure battery will fit in upper NEMA. Move battery (2018) to upper NEMA;

o Remove lower battery NEMA, dispose of old cabinet appropriately;

• Install 5’ cross-arm on tower at highest available location. Use Hollaender clamp on end to insert 12” aluminum pipe. Install ST300 temperature sensor inside RAD06 shield on vertical pipe;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Check wind sensor (2018) for functionality. Sensor is suspected due to wind obstruction;

• Check all SDI-12 soil sensors and replace any nonfunctioning sensors

2207 – Beaumont, TX SDI-12 CR1000X (2022) Not Before Complete NLT

STANDARD SITE CONFIGURATION Apr 2026 Aug 2026

• Replace datalogger (2022) with new CR1000X due to possible corrosion, return old datalogger in CR1000X packaging;

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

SCAN Site Maintenance Punchlist 124 Sites 2026 Contract

2206 – Kingsville, TX SDI-12 CR1000X (2022) Not Before Complete NLT

• Replace solar regulator – 2013 sunsaver;

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Replace Pyranometer (2024) for calibration. Return old sensor;

• Check all SDI-12 soil sensors and replace any nonfunctioning sensors

2228 – Nacogdoches, TX SDI-12 CR1000X (2025) Not Before Complete NLT

Has new NEMA (2025) Apr 2026 Aug 2026

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

2016 – Prairie View, TX Analog CR1000X (2022) Not Before Complete NLT

NONSTANDARD w/shelter Apr 2026 Aug 2026

• Install 5’ cross-arm on tower at highest available location. Use Hollaender clamp on end to insert 12” aluminum pipe. Install ST300 temperature sensor inside RAD06 shield on vertical pipe;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Replace Pyranometer (2024) for calibration. Return old sensor;

• Check all analog soil sensors and replace any nonfunctioning sensors

2199 – Riesel, TX SDI-12 CR1000X (2022) Not Before Complete NLT

STANDARD SITE CONFIGURATION Apr 2026 Aug 2026

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Replace Pyranometer (2024) for calibration. Return old sensor;

• Check all SDI-12 soil sensors and replace any nonfunctioning sensors

2200 – San Angelo, TX SDI-12 CR1000X (2022) Not Before Complete NLT

STANDARD SITE CONFIGURATION Apr 2026 Aug 2026

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

SCAN Site Maintenance Punchlist 124 Sites 2026 Contract

2203 – Stephenville, TX SDI-12 CR1000X (2025) Not Before Complete NLT

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Replace Pyranometer (2024) for calibration. Return old sensor;

• Check all SDI-12 soil sensors and replace any nonfunctioning sensors

2204 – Uvalde, TX SDI-12 CR1000X (2025) Not Before Complete NLT

STANDARD SITE CONFIGURATION Apr 2026 Aug 2026

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Replace Pyranometer (2024) for calibration. Return old sensor;

• Check all SDI-12 soil sensors and replace any nonfunctioning sensors

2205 – Weslaco, TX SDI-12 CR1000X (2022) Not Before Complete NLT

NEMA REPLACEMENT Apr 2026 Aug 2026

• Keep currently installed solar panel (2022);

• Replace NEMA with new NEMA. Move existing RV50X transmitter, battery (2022 C&D), and enclosure RH sensor (2022) to new NEMA;

o return internal components, minus the transmitter, to SCAN staff;

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Replace Pyranometer (2024) for calibration. Return old sensor;

• Tipping bucket (2025) - install current TB on ground with alter shield due to wind/precip issue – will require concrete work;

• Check all SDI-12 soil sensors and replace any nonfunctioning sensors

2049 – Powder Mill, MD Analog CR1000X (2021) Not Before Complete NLT

NON-STANDARD with shelter & 20’ Rohn tower May 2026 Sep 2026

• Solar regulator – replace 2001 Sunsaver;

• Install 5’ cross-arm on tower at highest available location. Use Hollaender clamp on end to insert 12” aluminum pipe. Install ST300 temperature sensor inside RAD06 shield on vertical pipe;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Replace Pyranometer (2024) for calibration. Return old sensor;

Site visit note: One leg of 10’ met tower is cut short and has only one bolt but it is solid

SCAN Site Maintenance Punchlist 124 Sites 2026 Contract

2008 – Tidewater #1, NC Analog CR1000X (2024) Not Before Complete NLT NON-STANDARD with shelter & 20’ Rohn tower, TB on ground post May 2026 Sep 2026

• Solar regulator – replace 1993 Sunsaver;

• Install 5’ cross-arm on tower at highest available location. Use Hollaender clamp on end to insert 12” aluminum pipe. Install ST300 temperature sensor inside RAD06 shield on vertical pipe;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Replace Pyranometer (2024) for calibration. Return old sensor;

• Check all analog soil sensors and replace any nonfunctioning sensors

2011 – Geneva #1, NY SDI-12 CR1000X (2021) Not Before Complete NLT

NON-STANDARD with shelter & 20’ Rohn tower May 2026 Sep 2026

• Solar regulator – replace 1993 Sunsaver;

• Install 5’ cross-arm on tower at highest available location. Use Hollaender clamp on end to insert 12” aluminum pipe. Install ST300 temperature sensor inside RAD06 shield on vertical pipe;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Replace Pyranometer (2024) for calibration. Return old sensor;

• Check all SDI-12 soil sensors and replace any nonfunctioning sensors;

• Replace very badly rusted out soils NEMA and small MET NEMA, if inventory permits

2014 – Molly Caren #1, OH SDI-12 CR1000X (2021) Not Before Complete NLT

NEMA REPLACEMENT May 2026 Sep 2026

• Replace concrete for wiggling tower

• Install new solar panel, dispose of old panel(s) appropriately;

• Replace NEMA with new NEMA. Move existing RV50 transmitter, battery (2023 C&D), and new enclosure RH sensor (unsure of age) to new NEMA;

o return internal components, minus the transmitter, to SCAN staff;

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Replace Pyranometer (2024) for calibration. Return old sensor;

• Check all SDI-12 soil sensors and replace any nonfunctioning sensors

2028 – Mahantango Ck, PA Analog CR1000X (2021) Not Before Complete NLT

NONSTANDARD w/snow depth May 2026 Sep 2026

• Install 5’ cross-arm on tower at highest available location. Use Hollaender clamp on end to insert 12” aluminum pipe. Install ST300 temperature sensor inside RAD06 shield on vertical pipe;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Replace Pyranometer (2024) for calibration. Return old sensor;

• Replace snow depth sensor with Sommer and install adequate snow depth target if none currently exists;

SCAN Site Maintenance Punchlist 124 Sites 2026 Contract

2036 – Rock Springs Pa, PA Analog CR1000X (2024) Not Before Complete NLT Has new NEMA (2024) May 2026 Sep 2026

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Replace Pyranometer (2024) for calibration. Return old sensor;

• Add Sommer snow depth sensor and install adequate snow depth target;

• Check all analog soil sensors and replace any nonfunctioning sensors

2039 – N Piedmont Arec, VA Analog CR1000X (2021) Not Before Complete NLT

NONSTANDARD w/NO shelter, TB on ground post May 2026 Sep 2026

• Install 10’ cross-arms on 20’ tower and move all above ground sensors to new tower locations;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Install ST300 temperature sensor inside RAD06 shield on empty arm space opposite the HMP155;

• Replace Pyranometer (2024) for calibration. Return old sensor;

• Check all analog soil sensors and replace any nonfunctioning sensors – replace soils conduit

2089 – Reynolds Homestead, VA SDI-12 CR1000X (2021) Not Before Complete NLT

STANDARD SITE CONFIGURATION May 2026 Sep 2026

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Replace Pyranometer (2024) for calibration. Return old sensor;

• Check all SDI-12 soil sensors and replace any nonfunctioning sensors Site visit note: Lots of ants at this site

2088 – Shenandoah, VA Analog CR1000X (2021) Not Before Complete NLT

NEMA REPLACEMENT May 2026 Sep 2026

• Install new solar panel, dispose of old panel(s) appropriately;

• Replace NEMA with new NEMA. Move existing RV50X transmitter, battery (2021 - Duracell), and enclosure RH (2025) to new NEMA;

o return internal components, minus the transmitter, to SCAN staff;

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

SCAN Site Maintenance Punchlist 124 Sites 2026 Contract

2107 – Crossroads, NM Analog CR1000X (2021) Not Before Complete NLT NEMA REPLACEMENT Jun 2026 Oct 2026

• Rebuild site to standard specs;

• Shore up tower with concrete, if needed;

• Install new solar panel, dispose of old panel(s) appropriately;

• Replace NEMA with new NEMA. Move existing RV50X transmitter, battery (2021 - Duracell), and enclosure RH (2024) to new NEMA;

o return internal components, minus the transmitter, to SCAN staff;

• Install two full 10’ cross arms for WS/SR and TB/Temp RH;

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head, body, and shield. Return old sensor in protective packaging for calibration;

• Pyranometer (2025) – move Apogee sensor, mount and cable to tower arm;

• Move existing tipping bucket (2023) and mount to new arms;

• Replace (2005) wind sensor, recycle old sensor;

• Check all analog soil sensors and replace any nonfunctioning sensors

• Will need grounding rods

2108 – Willow Wells, NM Analog CR1000X (2021) Not Before Complete NLT

NEMA REPLACEMENT Jun 2026 Oct 2026

• Rebuild site to standard specs;

• Shore up tower with concrete, if needed;

• Install new solar panel, dispose of old panel(s) appropriately;

• Replace NEMA with new NEMA. Move existing RV50X transmitter, battery (2021 - Duracell), and enclosure RH (2024) to new NEMA;

o return internal components, minus the transmitter, to SCAN staff;

• Install two full 10’ cross arms for WS/SR and TB/Temp RH;

• Install 5’ cross-arm on tower at 7’ (AGL). Install ST300 temperature sensor inside RAD06 shield on new arm;

• Install new HMP155 head, body, and shield. Return old sensor in protective packaging for calibration;

• Pyranometer (2025) – move Apogee sensor, mount and cable to tower arm;

• Move existing tipping bucket (2021) to new arms;

• Replace (2005) wind sensor, recycle old sensor;

• Will need grounding rods

2022 – Fort Reno #1, OK SDI-12 CR1000X (2025) Not Before Complete NLT NONSTANDARD w/shelter Jun 2026 Oct 2026

• Install 5’ cross-arm on tower at highest available location. Use Hollaender clamp on end to insert 12” aluminum pipe. Install ST300 temperature sensor inside RAD06 shield on vertical pipe;

• Install new HMP155 head. Return old sensor in protective packaging for calibration;

• Replace Pyranometer (2024) for calibration. Return old sensor;

• Check all SDI-12 soil sensors and replace any nonfunctioning sensors;

Site visit note: Continue to remove debris around site, if present. Watch your tires

SCAN Site Maintenance Punchlist 124 Sites 2026 Contract

2006 – Bushland #1, TX Analog CR1000X (2022) Not Before Complete NLT NONSTANDARD w/shelter Jun 2026 Oct 2026

• Install 5’ cross-arm on tower at highest available location. Use Hollaender clamp on end to insert 12” aluminum pipe. Install ST300 temperature sensor inside RAD06 shield on vertical pipe;

• Install new HMP155 head. Return old sensor in protective…