Commander & Director, U.S. Army Engineer Waterways Experiment Station, ATTN: CEWES-CT-C, 3909 Halls Ferry Road, Vicksburg, MS 39180-6199

66 -- AUTOMATED PIEZOMETER MEASUREMENT SYSTEMS POC Point of Contact, Mike Lee 601-634-2490 The USAE Waterways Experiment Station (WES) proposes to award a contract to Geomation, Inc., Golden, CO under authority of 10 U.S.C. 2304 (c)(1) for the purchase of automated piezometer measurement systems, to be shipped to the Mansfield Hollow Lake/Dam in Mansfield Center, CT. Equipment listed as follows: Ten (10) each measurement and control unit, frequency 457.525 MHz, Geomation model No. LI 2380/20FR (MCU); Ten (10) each Analog signal multiplexer, Geomation model No. 2380-10 (ASM); Eight (8) each Solar panel and mounting kit, Geomation model no. CA-PV9G (PV9G); One (1) each Environmental instrument interface, Geomation model No. 2380-50 (EII); One (1) each Network monitoring station, Geomation model No. NM-2310 (NMS-S); One (1) each Portable network monitoring station, Geomation model No. NM- 2320 (PNM-S); One (1) each VHF radio data link, frequency 457.525 MHz, Geomation model No. RS-RDOS (Spare-Radio Module only, for Geomation model No. 2380/20FR); One (1) each YAGI directional antenna kit (YDA). The proposed procurement consists of 10 each remote located, battery powered, solar charged, weather proof and radio frequency telemetry linked measurement systems. The 10 systems will monitor a total of 35 channels of data. The installation is to be completed before 15 November 1995 to avoid severe weather conditions during the winter season and allow measurement of spring snow melt. The piezometer instrumentation must monitor vibrating wire pressure transducers and SDI-12 shaft encoders and use radio frequency telemetry to transfer data; making the data available to the site personnel and the area COE Division offices by telephone and modem. Each system will be located outside, on the COE dam, at a piezometer standpipe and must monitor up to 20 sensors. Each system must accept sensor signals from adjacent solar panel to furnish continuous DC power. Data must be retrieved from each system by radio frequency telemetry link to a monitoring station repeater. The monitoring station will be tied to a telephone line. Data retrieval must have the option to telemetry daisy-chained through adjacent system radio links making available wide distace separation between systems. The 10 systems will monitor 35 channels of data. Alarm conditions capability must be available to report on site each channel's high or low data thresholds or abnormal data rate changes. Retrieved data will be exchanged between various divisions for expert interpretation and analysis without changing the data format. A system software approach with specific data and communication protocol, GEONET, has been established with the COE and 5 other area instrumented dams. The data acquisition systems hardware and software must interface into that network because data analysis, plotting and archiving procedures have been established and approved by COE personnel responsible for dam maintenance and safety. There is no other known equipment other than Geomation, Inc., which will interface directly to the existing network due to its unique data format, data analysis, network configuration and communication protocol. Any inquiries must be received within fifteen days from date of publication of this notice. Synopsis published for information purposes only. Solicitation documents are not available. (0258)

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