SOW_Statement_of_Work_FloodWarningSystem.pdf
PDF 742 KB Posted
- Attached to
- Supply and Install Flood Early Warning System - CA Federal contract opportunity
- Solicitation number
- 140P1223Q0108
About this file
This statement of work describes requirements for a flood early warning system for Capitol Reef National Park. The project requires installation of an automated weather station to measure precipitation, temperature, and relative humidity at a communications tower site. The station must store and transmit data via cellular modem, and send alarm messages when rainfall thresholds are exceeded. Sensors must withstand temperatures from -40C to 70C and winds up to 50 mph. As there is no power at the site, the system must operate using solar power. A tipping bucket rain gauge with 0.254mm resolution, temperature sensor accurate to 0.2C, and humidity sensor accurate to 1.5-2% are specified. The datalogger must store at least 50MB of data and have a real-time clock accurate to 3 minutes per year operating from -40C to 70C. The cellular modem must be compatible with Verizon's 4G LTE network. Installation is to be completed at the specified repeater site location with latitude and longitude provided, including sensor installation, programming, training and instructions.
View the file
Other files for this federal contract opportunity
| File | Type | Posted |
|---|---|---|
| Sol_140P1223Q0108.pdf |
On GovTribe
Work with this file on GovTribe
- Download the original file
- Contacts named in this file
- Similar government files
- Ask GovTribe AI about this file
Text version
140P1223Q0108 Statement of Work
Early Flood Warning System for Capitol Reef National Park
Project Description
Install an automated weather station that measures liquid (unfrozen) precipitation as well as temperature and relative humidity (RH) storing these data and transmitting data via cellular modem.
In addition, the data logger will be programmed to send alarms via text message and email when rainfall rate exceeds 0.1 inch in 10 minutes or 0.17 inches in 20 minutes. Otherwise, all rainfall, temperature, and RH will be recorded hourly and will be accessible via the datalogger (direct download) or cellular telemetry.
The weather station will be mounted to an existing communications tower (see photos and location information below) and will be capable of withstanding temperatures of -40⁰C to +70⁰C and wind speeds of 50 miles per hour. There is no line power at the site so the system must function on solar power. The temperature and RH sensors must be covered with an appropriate radiation shield. The station shall function year-round, though need not measure frozen precipitation (snow fall).
All equipment will be installed at the location listed below. Installation will include programming, training, and provision of basic written instructions.
Sensor specifications
Temperature: Measurement Range = -40⁰C to +70⁰C
Accuracy = +/- 0.2 C (over the range -40⁰ to +70⁰C)
= +/- 0.1 C (over the range 20⁰ to 60⁰C)
Resolution = 0.001⁰C
Calibration Traceability = NIST and NPL standards
RH: Measurement Range = 0 to 100% RH
Accuracy = +/- 1.5% (at 25⁰C, over the range 0 to 80% RH)
= +/- 2% (at 25⁰C, over the range 80 to 100% RH)
Resolution = 0.001% RH
Precipitation: Sensor type = tipping bucket
Operating Range = 0⁰ to 50⁰C
Resolution = 1 tip
Orifice diameter = 20.3 cm (8 inches)
Rainfall per tip = 0.254mm (0.01 inch)
Datalogger: Storage = at least 50 MB
Real-time clock accuracy = +/- 3 minutes per year
Operating Range = -40⁰C to +70⁰C
Cell Modem: Cell technology = 4G (LTE CAT-1), Verizon cellular network compatible
Installation Location:
The installation site is a radio repeater site on Miner’s Mountain, just west of Capitol Reef National Park and near Torrey, Utah (Figure 1). The location is latitude 38.173534⁰ North and longitude -111.240129⁰ West. The site is generally accessible April through November by a standard four-wheel drive vehicle.
Figure 2 is a photo of the site looking to the southwest. The instrumentation will be installed at 6-10 feet off of the ground on the nearest tower upright in the photo. The uprights are spaced at 6 feet apart and are composed of 2” outer diameter steel pipe. The rain gauge shall be installed at least 3 feet from the nearest tower component on a lateral cross-arm.
Figure 1. Location map
Figure 2. Installation location, Miner's Mountain communication site.
File details come from the government source that posted it. Updated .