Attachment 1 - SOW and Punchlist.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 US, including Alaska, Hawaii, Puerto Rico and the US Virgin Islands, with a focus on U.S. agricultural areas. Currently, there are 210 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 US, 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 provide 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 US. 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:

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 Comprehensive 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://survey1 23.arcgis.com/

ArcGIS Survey12 3 App via tablet or smart phone

On the same day SCAN site Maintenance 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 are 4-wheel drive access only so contractor must have access to an appropriate off road vehicle. 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.

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

SCAN Site Maintenance Punchlist 116 Sites 2025 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.

Two weeks 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 116 Sites 2025 Contract

Watkinsville #1 Wedowee

NB: 5/2025

NLT: 9/2025

NB: 8/2025

NLT: 12/2025

NB: 5/2025

NLT: 9/2025

Lehman Levelland

Reese Center

Johnson Farm

NB: 2/2025

NLT: 6/2025

NB: 5/2025

NLT: 9/2025

NB: 9/2025

NLT: 12/2025

NB: 7/2025

NLT: 11/2025

NB: 4/2025

NLT: 8/2025

NB: 7/2025

NLT: 11/2025

NB: 7/2025

NLT: 11/2025

NB: 3/2025

NLT: 7/2025

NB: 4/2025

NLT: 8/2025

SCAN Site Maintenance Punchlist 116 Sites 2025 Contract

SCAN Site Maintenance Punchlist 116 Sites 2025 Contract

2174 – Dee River Ranch, AL SDI‐12 CR1000X (2023) Not Before Complete NLT Standard site configuration Feb 2025 Jun 2025

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) and return old sensor in TB packaging;

Check all SDI‐12 soil sensors and replace any nonfunctioning sensors o Relocate soils stack. Water flows across the road and right to the site and is eroding soil near the soil moisture stack, making soils wetter than similar surrounding soils.

Site visit note: tower has severe lean; battery box has been removed

2024 – Goodwin Ck Pasture, MS Analog CR1000X (2021) Not Before Complete NLT Non‐standard site configuration NEMA REPLACEMENT Feb 2025 Jun 2025

Use existing Rohn tower and move above ground sensors. May have to junction the soil sensors and we will work out the cable/gland situation.

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

Replace NEMA with new NEMA, o return internal components, minus the transmitter, to SCAN staff;

Install existing transmitter in NEMA;

Move existing battery to NEMA (2023);

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;

Wind sensor ‐ replace anemometer (2012), return old sensor for calibration;

Replace rusted soils NEMA, if inventory permits;

Check all analog soil sensors and replace any nonfunctioning sensors

2025 – Goodwin CK Timber, MS Analog CR1000X (2021) Not Before Complete NLT Non‐Standard site configuration NEMA REPLACEMENT Feb 2025 Jun 2025

MET tower is not in concrete so moves and is not level and some sensors cannot be levelled;

Remove shelter, remove trees, and move all sensors to stable 20’ tower;

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

Replace NEMA with new NEMA, o return internal components, minus the transmitter, to SCAN staff;

Install existing transmitter in NEMA;

Move existing battery to NEMA (2023).

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;

Check all analog soil sensors and replace any nonfunctioning sensors

Site visit note: use a brushcutter to clear vegetation. Red ant insecticide needed. Wasps in shelter. Site should be regularly mowed. Site has been logged and soil sensors are no longer in timber.

SCAN Site Maintenance Punchlist 116 Sites 2025 Contract

2109 – Sandy Ridge, 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;

Pyranometer (2023) – Install new Apogee sensor, return old sensor for calibration;

Enclosure RH – install new CS210;

Multiplexer (2005) – replace with 16/32B;

2070 – Scott, 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;

Enclosure RH – install new CS210;

Check all SDI‐12 soil sensors and replace any nonfunctioning sensors

Site visit note: use a brushcutter to clear vegetation. Tower leans so much that cross arms cannot be levelled.

2064 – Starkville, MS SDI‐12 CR1000X (2024) Not Before Complete NLT Standard site configuration NEMA REPLACEMENT Feb 2025 Jun 2025

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

Replace NEMA with new NEMA, o return internal components, minus the transmitter, to SCAN staff;

Install existing transmitter in NEMA;

Move existing battery to NEMA (2023). 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 (2023) ‐ Replace TB cable with more robust cable as needed;

Check all SDI‐12 soil sensors and replace any nonfunctioning sensors

2035 – Vance, 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;

Pyranometer – Install new Apogee sensor and cable (stored at site);

Install tipping bucket and mount;

Install all analog soil sensors;

Install grounding rods and new padlock

SCAN Site Maintenance Punchlist 116 Sites 2025 Contract

2057 – AAMU‐JTG, AL Analog CR1000X (2024) Not Before Complete NLT Standard site configuration Mar 2025 Jul 2025

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

Pyranometer (2023) – Install new Apogee sensor, return old sensor for calibration;

Tipping bucket (2024) ‐ install on ground with alter shield and more robust cable ‐ instructions to be provided NLT Oct 1, 2024;

Install ST300 temperature sensor inside RAD06 shield on vacated TB arm with vertical pipe, if needed, to reach 7’ (AGL);

2078 – Bragg Farm, AL Analog CR1000X (2021) Not Before Complete NLT Standard site configuration NEMA REPLACEMENT Mar 2025 Jul 2025

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

Replace NEMA with new NEMA, o return internal components, minus the transmitter, to SCAN staff;

Install existing transmitter in NEMA;

Move existing battery to NEMA (2021). Remove lower battery NEMA, if present, 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;

Pyranometer (2023) – Install new Apogee sensor, return old sensor for calibration;

Tipping bucket (2018) ‐ Replace TB cable with more robust cable as needed;

2113 – Cullman‐NAHRC, AL Analog CR1000X (2024) Not Before Complete NLT Standard site configuration Has new NEMA (2024) Mar 2025 Jul 2025

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;

Pyranometer (2023) – Install new Apogee sensor, return old sensor for calibration;

Check all analog soil sensors and replace any nonfunctioning sensors

Site visit note: use a brushcutter to clear vegetation

2055 – Hodges, AL SDI‐12 CR1000X (2024) Not Before Complete NLT Standard site configuration Has new NEMA (2024) Mar 2025 Jul 2025

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;

Pyranometer (2023) – Install new Apogee sensor, return old sensor for calibration;

SCAN Site Maintenance Punchlist 116 Sites 2025 Contract

2173 – Isbell Farms, AL GOES SDI‐12 CR1000X (2023) Not Before Complete NLT

Shore up tower with more concrete;

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

Replace NEMA with new NEMA;

o return internal components to SCAN staff;

Install new cell or new GOES transmitter in NEMA;

Move existing battery to NEMA (2024). 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;

Pyranometer (2023) – Install new Apogee sensor, return old sensor for calibration;

Tipping bucket (2024) ‐ Replace TB cable with more robust cable as needed;

Replace anemometer (2010), return old sensor for calibration;

2056 – Stanley Farm, AL 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;

Check all analog soil sensors and replace any nonfunctioning sensors

Site visit note: Continued vegetation management and tree removal required

2179 – Sudduth Farms, AL SDI‐12 CR1000X (2024) Not Before Complete NLT Standard site configuration Has new NEMA (2024) Mar 2025 Jul 2025

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;

Pyranometer (2023) – Install new Apogee sensor, return old sensor for calibration;

Check all SDI‐12 soil sensors and replace any nonfunctioning sensors

Site visit note: Continued vegetation management and tree removal required

2053 – Wtars, AL Analog CR1000X (2021) Not Before Complete NLT Non‐Standard site configuration NEMA REPLACEMENT Mar 2025 Jul 2025

Install cross‐arms on 20’ tower and move all above ground sensors to new tower location;

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

Replace NEMA with new NEMA, o return internal components, minus the transmitter, to SCAN staff;

Install existing transmitter in NEMA;

Move existing battery to NEMA (2024). Remove lower battery NEMA, if present, 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;

Pyranometer (2023) – Install new Apogee sensor, return old sensor for calibration;

Tipping bucket (2024) ‐ Replace TB cable with more robust cable as needed;

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

SCAN Site Maintenance Punchlist 116 Sites 2025 Contract

2083 – Uapb Campus‐PB, AR Analog CR1000X (2021) 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;

Pyranometer (2023) – Install new Apogee sensor, return old sensor for calibration;

Replace datalogger (2021) with new CR1000X, return old datalogger in CR1000X packaging;

Multiplexer (2019) – replace with 16/32B, if not already present;

2091 – Uapb Dewitt, AR 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;

Enclosure RH – install new CS210;

Multiplexer (2019) – replace with 16/32B, if not already present;

2085 – Uapb‐Earle, AR Analog CR1000X (2021) 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;

Wind sensor ‐ replace anemometer (2004), return old sensor for calibration;

Replace datalogger (2021) with new CR1000X, return old datalogger in CR1000X packaging;

Enclosure RH – install new CS210;

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

2030 – Uapb‐Lonoke Farm, AR SDI‐12 CR1000X (2021) Not Before Complete NLT Non‐Standard site configuration w/shelter Mar 2025 Jul 2025

Replace 2 smaller solar panels;

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 datalogger (2021) with new CR1000X, return old datalogger in CR1000X packaging;

Enclosure RH – install new CS210;

SCAN Site Maintenance Punchlist 116 Sites 2025 Contract

2084 – Uapb‐Marianna, AR Analog CR1000X (2024) Not Before Complete NLT

Shore up tower with more concrete;

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

Replace NEMA with new NEMA;

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

Install existing transmitter in NEMA;

Move existing battery to NEMA (2023). Remove lower battery NEMA, if present, 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 (2012) – Replace and return old sensor in TB packaging. Replace TB cable with more robust cable as needed;

Wind sensor ‐ replace anemometer (2004), return old sensor for calibration;

Check all analog soil sensors and replace any nonfunctioning sensors

Site note: Tower wiggles just a little like the bolt holes have been drilled out but the base seems secure

2090 – Uapb Point Remove, AR Analog CR1000X (2024) Not Before Complete NLT Standard site configuration Has new NEMA (2024) Mar 2025 Jul 2025

Install new battery. Was installed in 2023 but had been damaged and is now testing marginally;

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;

2079 – Mammoth Cave, KY Analog CR1000X (2021) Not Before Complete NLT

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

Replace NEMA with new NEMA, o return internal components, minus the transmitter, to SCAN staff;

Install existing transmitter in NEMA;

Move existing battery to NEMA (2024). Remove lower battery NEMA, if present, 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;

Pyranometer (2023) – Install new Apogee sensor, return old sensor for calibration;

Tipping bucket (2021) ‐ Replace TB cable with more robust cable as needed;

Wind sensor ‐ replace anemometer (2003), return old sensor for calibration;

2005 – Princeton #1, KY Analog CR1000X (2023) Not Before Complete NLT Standard site configuration Has new NEMA (2023) Mar 2025 Jul 2025

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 116 Sites 2025 Contract

2032 – Beasley Lake, MS Analog CR1000X (2024) Not Before Complete NLT

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

Replace NEMA with new NEMA, o return internal components, minus the transmitter, to SCAN staff;

Install existing transmitter in NEMA;

Move existing battery to NEMA (2023). 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 (2021) ‐ Replace TB cable with more robust cable as needed;

2110 – Mayday, MS Analog CR1000X (2021) 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;

Pyranometer (2023) – Install new Apogee sensor, return old sensor for calibration;

Replace datalogger (2021) with new CR1000X, return old datalogger in CR1000X packaging;

Enclosure RH – install new CS210;

Multiplexer (2005) – replace with 16/32B, if not already present;

Check all analog soil sensors and replace any nonfunctioning sensors

Site visit note: sensors are 15 ft above ground

2087 – North Issaquena, MS SDI‐12 CR1000X (2024) Not Before Complete NLT Standard site configuration Has new NEMA (2024) Mar 2025 Jul 2025

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;

2033 – Onward, 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;

Tipping bucket (2024) ‐ install on ground with alter shield and more robust cable – instructions to be provided NLT Oct 1, 2024;

SCAN Site Maintenance Punchlist 116 Sites 2025 Contract

2046 – Perthshire, MS SDI‐12 CR1000X (2021) 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;

Pyranometer (2023) – Install new Apogee sensor, return old sensor for calibration;

Replace tipping bucket (2013), return old sensor in TB packaging;

Replace datalogger (2021) with new CR1000X, return old datalogger in CR1000X packaging;

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;

2034 – Tunica, MS SDI‐12 CR1000X (2024) Not Before Complete NLT

Keep current solar panel (2023);

Replace NEMA with new NEMA, o return internal components, minus the transmitter, to SCAN staff;

Install existing transmitter in NEMA;

Move existing battery to NEMA (2021). 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 (2024) ‐ Replace TB cable with more robust cable as needed;

Check all SDI‐12 soil sensors and replace any nonfunctioning sensors

Site visit note: Tower has a lean, but it isn't enough to prevent the sensors from being levelled.

2076 – Allen Farms, TN Analog CR1000X (2024) Not Before Complete NLT Standard site configuration Has new NEMA (2024) Mar 2025 Jul 2025

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;

Pyranometer (2023) – Install new Apogee sensor, return old sensor for calibration;

Check all analog soil sensors and replace any nonfunctioning sensors

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

2077 – Eastview Farm, TN Analog CR1000X (2024) Not Before Complete NLT Standard site configuration Has new NEMA (2024) Mar 2025 Jul 2025

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;

Pyranometer (2023) – Install new Apogee sensor, return old sensor for calibration;

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

SCAN Site Maintenance Punchlist 116 Sites 2025 Contract

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

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

Replace NEMA with new NEMA, o return internal components, minus the transmitter, to SCAN staff;

Install existing transmitter in NEMA;

Move existing battery to NEMA (2024). Remove lower battery NEMA, if present, 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;

Pyranometer (2023) – Install new Apogee sensor, return old sensor for calibration;

Tipping bucket (2021) – Replace due to being pitted and chipping paint, return old sensor in TB packaging. Replace TB cable with more robust cable as needed;

Check all analog soil sensors and replace any nonfunctioning sensors

2177 – Broad Acres, AL SDI‐12 CR1000X (2024) Not Before Complete NLT Standard site configuration Has new NEMA (2024) Apr 2025 Aug 2025

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;

Pyranometer (2023) – Install new Apogee sensor, return old sensor for calibration;

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

2114 – Livingston‐UWA, AL SDI‐12 CR1000X (2024) Not Before Complete NLT Standard site configuration NEMA REPLACEMENT Apr 2025 Aug 2025

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

Replace NEMA with new NEMA, o return internal components, minus the transmitter, to SCAN staff;

Install existing transmitter in NEMA;

Move existing battery to NEMA (2021). Remove lower battery NEMA, if present, 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 (2010) and return old sensor in TB packaging; Replace TB cable with more robust cable as needed;

2178 – Morris Farms, AL SDI‐12 CR1000X (2024) Not Before Complete NLT Standard site configuration Has new NEMA (2024) Apr 2025 Aug 2025

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 116 Sites 2025 Contract

2176 – Selma, AL SDI‐12 CR1000X (2024) Not Before Complete NLT Standard site configuration Has new NEMA (2024) Apr 2025 Aug 2025

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;

2115 – Tuskegee, AL Analog CR1000X (2024) Not Before Complete NLT Standard site configuration NEMA REPLACEMENT Apr 2025 Aug 2025

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

Replace NEMA with new NEMA, o return internal components, minus the transmitter, to SCAN staff;

Install existing transmitter in NEMA;

Install existing battery (2023) in 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;

Pyranometer (2023) – Install new Apogee sensor, return old sensor for calibration;

Tipping bucket (2021) ‐ Replace TB cable with more robust cable as needed;

Check all analog soil sensors and replace any nonfunctioning sensors

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

2175 – Wedowee, AL SDI‐12 (4) CR1000X (2024) Not Before Complete NLT Standard site configuration NEMA REPLACEMENT Apr 2025 Aug 2025

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

Replace NEMA with new NEMA, o return internal components, minus the transmitter, to SCAN staff;

Install existing transmitter in NEMA;

Move existing battery (2024) to 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;

Pyranometer (2023) – Install new Apogee sensor, return old sensor for calibration;

Tipping bucket (2024) ‐ Replace TB cable with more robust cable as needed;

Site visit note: Vegetation management badly needed

SCAN Site Maintenance Punchlist 116 Sites 2025 Contract

2013 – Watkinsville #1, GA SDI‐12 CR1000X (2024) Not Before Complete NLT Non‐standard site configuration w/shelter & 20’ Rohn tower Apr 2025 Aug 2025

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;

Pyranometer (2023)– Install new Apogee sensor, return old sensor for calibration;

Enclosure RH – install new CS210;

Site visit note: Vegetation management badly needed

2224 – Busby Farm, MO SDI‐12 CR1000X (2024) Not Before Complete NLT Non‐standard site configuration w/short tower and no shelter Apr 2025 Aug 2025

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

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;

2195 – CMRB LTAR, MO SDI‐12 CR1000X (2024) Not Before Complete NLT Standard site configuration Apr 2025 Aug 2025

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;

Pyranometer (2023)– Install new Apogee sensor, return old sensor for calibration;

SCAN Site Maintenance Punchlist 116 Sites 2025 Contract

2048 – Dexter, MO 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;

Pyranometer (2023) – Install new Apogee sensor, return old sensor for calibration;

Tipping bucket ‐ Replace (2015) and return old sensor in TB packaging;

Wind sensor installed in 2022 but has too many zero readings; wind obstruction? Check for replacement or removal;

Check all analog soil sensors and replace any nonfunctioning sensors

2220 – Elsberry PMC, MO SDI‐12 CR1000X (2024) Not Before Complete NLT Non‐standard site configuration w/short tripod tower and no shelter NEMA REPLACEMENT Apr 2025 Aug 2025

Rebuild site to standard specs;

Install tower with concrete;

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

Replace NEMA with new NEMA, o return internal components, minus the transmitter, to SCAN staff;

Install existing transmitter in NEMA;

Install new battery in NEMA;

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 (2023) – Install new Apogee sensor and cable, return old sensor for calibration;

Replace tipping bucket and mount, return old sensor in TB packaging. Replace TB cable with more robust cable as needed;

Replace anemometer and mount, return old sensor for calibration;

Will need grounding rods

2194 – Journagan Ranch, MO SDI‐12 (2 sets 5) CR1000X (2021) 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;

Pyranometer (2023) – Install new Apogee sensor, return old sensor for calibration;

SCAN Site Maintenance Punchlist 116 Sites 2025 Contract

2230 – LTSP, MO GOES SDI‐12 CR1000X (2021) Not Before Complete NLT Non‐standard site configuration w/short tower and no shelter Has new NEMA (2021) Apr 2025 Aug 2025

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;

Pyranometer (2023) – Install new Apogee sensor, return old sensor for calibration;

2225 – Mark Twain, MO SDI‐12 CR1000X (2023) 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;

2060 – Mt Vernon, MO Analog (4 depths) 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;

Pyranometer (2023)– Install new Apogee sensor, return old sensor for calibration;

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

Battery – replace 2015 with new 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

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;

Pyranometer (2023) – Install new Apogee sensor, return old sensor for calibration;

SCAN Site Maintenance Punchlist 116 Sites 2025 Contract

2227 – Shaw Nature, MO SDI‐12 CR1000X (2023) 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;

Pyranometer (2023)– Install new Apogee sensor, return old sensor for calibration;

Check all other SDI‐12 soil sensors and replace any nonfunctioning sensors

2231 – Sinkin Forest, MO GOES SDI‐12 CR1000X (2021) Not Before Complete NLT Non‐standard site configuration w/short tower and no shelter Has new NEMA (2021) Apr 2025 Aug 2025

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;

Pyranometer (2023) – Install new Apogee sensor, return old sensor for calibration;

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

Battery – replace 2015 with new battery;

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;

Pyranometer (2023) – Install new Apogee sensor, return old sensor for calibration;

Tipping bucket ‐ Replace (2015) and return old sensor in TB packaging;

2226 – Twin Pines, MO SDI‐12 CR1000X (2024) 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;

SCAN Site Maintenance Punchlist 116 Sites 2025 Contract

2049 – Powder Mill, MD Analog CR1000X (2021) Not Before Complete NLT Non‐standard site configuration w/shelter & 20’ Rohn tower May 2025 Sep 2025

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 datalogger (2021) with new CR1000X, return old datalogger in CR1000X packaging;

Check all analog soil sensors and replace any nonfunctioning sensors

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

2008 – Tidewater #1, NC Analog CR1000X (2021) Not Before Complete NLT Non‐standard site configuration w/shelter & 20’ Rohn tower, TB on ground post May 2025 Sep 2025

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 datalogger (2021) with new CR1000X, return old datalogger in CR1000X packaging;

2011 – Geneva #1, NY SDI‐12 CR1000X (2021) Not Before Complete NLT Non‐standard site configuration w/shelter & 20’ Rohn tower May 2025 Sep 2025

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 datalogger (2021) with new CR1000X, return old datalogger in CR1000X packaging;

Enclosure RH – install new CS210;

Check all SDI‐12 soil sensors and replace any nonfunctioning sensors;

Replace very badly rusted out soils NEMA and small MET NEMA

2014 – Molly Caren #1, OH SDI‐12 CR1000X (2024) Not Before Complete NLT Standard site configuration May 2025 Sep 2025

Replace concrete for wiggling tower 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;

Pyranometer (2023) – Install new Apogee sensor, return old sensor for calibration;

SCAN Site Maintenance Punchlist 116 Sites 2025 Contract

2028 – Mahantango Ck, PA Analog CR1000X (2021) Not Before Complete NLT Non‐standard site configuration w/snow depth May 2025 Sep 2025

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 datalogger (2021) with new CR1000X, return old datalogger in CR1000X packaging;

Enclosure RH – install new CS210;

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

2036 – Rock Springs Pa, PA Analog CR1000X (2024) Not Before Complete NLT Standard site configuration Has new NEMA (2024) May 2025 Sep 2025

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;

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

2039 – N Piedmont Arec, VA Analog CR1000X (2021) Not Before Complete NLT Non‐standard site configuration w/NO shelter, TB on ground post May 2025 Sep 2025

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;

Tipping bucket (2021) – standardize on ground with alter shield ‐ Instructions to be provided NLT Oct 1, 2024;

(already on ground but needs to be standardized);

Replace datalogger (2021) with new CR1000X, return old datalogger in CR1000X packaging;

2089 – Reynolds Homestead, VA SDI‐12 CR1000X (2021) 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 (2021) ‐ install on ground with alter shield due to overtipping issue – instructions to be provided NLT Oct 1, 2024;

Replace datalogger (2021) with new CR1000X, return old datalogger in CR1000X packaging;

Enclosure RH – install new CS210;

Site visit note: Lots of ants at this site

SCAN Site Maintenance Punchlist 116 Sites 2025 Contract

2088 – Shenandoah, VA Analog CR1000X (2021) 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 datalogger (2021) with new CR1000X, return old datalogger in CR1000X packaging;

Enclosure RH – install new CS210;

2022 – Fort Reno #1, OK SDI‐12 CR1000X (2024) Not Before Complete NLT Non‐standard site configuration w/shelter May 2025 Sep 2025

Replace 2 x 20W solar panels;

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;

Install new cross‐arm for TB/WS with 2 Hollaender clamps;

Enclosure RH – install new CS210;

Check all SDI‐12 soil sensors and replace any nonfunctioning sensors

Site visit note: May still have lots of debris around site ‐ watch your tires

2207 – Beaumont, TX SDI‐12 CR1000X (2022) Not Before Complete NLT Standard site configuration May 2025 Sep 2025

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

2006 – Bushland #1, TX Analog CR1000X (2024) 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;

Multiplexer (1993) – replace with 16/32B;

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

Solar regulator – replace 2013 sunsaver;

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

SCAN Site Maintenance Punchlist 116 Sites 2025 Contract

2201 – Knox City, TX 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;

2106 – Lehman, TX Analog CR1000X (2023) Not Before Complete NLT Standard site configuration Has new (old) NEMA (2023) May 2025 Sep 2025

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;

2105 – Levelland, TX Analog CR1000X (2023) Not Before Complete NLT Standard site configuration Has new NEMA (2023) May 2025 Sep 2025

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;

2228 – Nacogdoches, TX 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;

2016 – Prairie View, TX Analog CR1000X (2022 okay) 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;

Multiplexer (1993) – replace with 16/32B;

2104 – Reese Center, TX Analog CR1000X (2021) 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;

Pyranometer (2023) – Install new Apogee sensor, return old sensor for calibration;

SCAN Site Maintenance Punchlist 116 Sites 2025 Contract

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

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

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

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

2203 – Stephenville, TX 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;

2204 – Uvalde, TX 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;

2202 – Vernon, TX 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;

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

Solar regulator – replace 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;

SCAN Site Maintenance Punchlist 116 Sites 2025 Contract

2072 – Eros Data Center, SD Analog CR1000X (2023) 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;

Pyranometer (2023) – Install new Apogee sensor, return old sensor for calibration;

Check all analog soil sensors and replace any nonfunctioning sensors;

Add Sommer snow depth sensor and install adequate snow depth target

2020 – Mandan #1, ND Analog CR1000X (2023) 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;

Pyranometer (2023) – Install…