ESBD_357102_1713890397603_Revised Proprietary Purchase Justification_Texmesonet 3-29-2024 (002).pdf

PROPRIETARY PURCHASE JUSTIFICATION

(TEX. GOV’T CODE § 2155.067)

Texas Comptroller of Public Accounts Attn: Statewide Procurement Division P.O. Box 13186 Austin, TX 78711-3186

Re: Proprietary Purchase Justification for 220-87 / Meteorology Instruments

The Texas Water Development Board (TWDB) intends to purchase meteorology station components including:

Campbell Scientific products:

109 (15553)

CR1000X

CM 210 crossarm mounts CS320-17-PT Apogee Digital Thermopile Pyranometer (33243-12) CM226 Apogee Solar Sensor Mounting Stand w/Level & Base (34375)

R.M. Young products:

R.M. Young heavy duty wind monitor-HD (05108-5A) R.M. Young 10-plate radiation shield (41003-5) with sensor mounting adapter (41049) R.M. Young wind tracker (06201)

Met One:

12" Rain gauge (380D) with 18" in-line connector (63503) and 10-meter cable, rain gauge mounting bracket (102271) solar radiation sensor (094-1) with 18" in-line connector (63504) and 10-meter cable V-bolt tower mount for solar radiation (63493) with crossarm (1539-1) wind sensor (034 ) with l"xl" mounting clamp (1555)

Solarcraft:

Enclosure 5608A24CMESO

Enclosure 5608A18CMESO, dual compartment NEMA-3/NEMA-4 white powder coated, aluminum instrument enclosures

Novalynx Corporation:

DocuSign Envelope ID: C9AA5585-F405-4A61-A823-3AA0284393DD

Windscreen 64” Dia 24” Legs (260-952-64) Windscreen Leg Extender Kit 12” (260-954)

The TexMesonet program has been tasked with aggregating the state’s existing weather station networks into a central repository and building a network of automated weather stations across the state to fill gaps in existing network coverage. This resulting network-of- networks is able to provide coverage at a dense enough spacing to observe and monitor meso-scale weather events, such as individual thunderstorm supercells, in near real-time. As of , the TexMesonet program has installed and continues to operate and maintain stations. As the program has been tasked with additional station installations in Fiscal Year 202 , maintaining network standardization is essential to effective network operations.

Existing stations utilize equipment based on initial system design guidance from personnel with the Oklahoma Mesonet and West Texas Mesonet. The TWDB has developed automated data retrieval and web presentation procedures based on a standard system architecture and sensor configuration.

As the TWDB continues to build the weather monitoring network, a uniform design is essential. As noted by multiple established mesonet networks across the country, including the Oklahoma Mesonet, the West Texas Mesonet, and the National Coordinated Soil Moisture Monitoring Network, standardized equipment and configurations are imperative for efficient trouble shooting, objective comparison, and an ability to maintain data quality and connectivity. In addition, standardized equipment will allow the TWDB to interchange parts and equipment as needed to maintain operations across all stations.

The purchase is competitive as the requested items are available from multiple sources.

Signature: _________________________

Name:____________________________

Title: _____________________________

DocuSign Envelope ID: C9AA5585-F405-4A61-A823-3AA0284393DD

Interim Executive Administrator

Bryan McMath