WALLA WALLA DIST, CORPS OF ENG, WALLA WALLA WA 99362-1876

66 -- MANUFACTURE AND DELIVER 15 SELF-CONTAINED WATER QUALITY SENSORS SOL DACW68-95-B-0064 DUE 101095 POC Contract Specialist Nancy Kirshner (509) 527-7215 (Site Code DACW68) The U.S. Army Engineer District, Walla Walla, Washington, has a requirement for 15 water quality sensor systems for the Environmental Resources Branch of the Walla Walla District. Work includes all necessary labor, equipment, materials, software, data cables, initial configuration, and parts to provide the water quality sensor systems. Salient Characteristics are as follows: 1) Sensor must be housed in a probe configuaration that will operate self-contained (without the aid of surface or human support) for 2 weeks or more and record data readings at least every 15 minutes; 2) The sensor must withstand hydrostatic pressures at depths equal or greater to 100 meters (300 feet); 3) The sensor must measure depth in meters with a resolution of 0.1 meters and an accuracy of 2% of the measurement; 4) The oxygen sensor must use a polargraphic electrode that can be calibrated with two point reference and accurate to 0.2 mg/L of Dissolved Oxygen. The sensor must report Oxygen in mg/L and % sat; 5) The pH electrode must measure pH to 0.1 point and demonstrate calibration accuracy over three calibration pH points; 6) The conductivity probe must measure in mS/cm and provide accuracy of 0.5% of total measurement; 7) Temperature must read in Celsius and have an accuracy no less than + or - 0.2 degrees Celsius; 8) Calibration and general maintenance must be accomplished by a technician with minimal experience in chemical and limnological methods; 9) Data must be able to be downloaded from personal computers and in a format compatible with windows based software; 10) Must have both RS232 and SDI-12 capability for use in both autonomus and in the telemetry network system; 11) Probes should be easily replaced by the user or trained technician and the probes protected by a weighted sensor guard; 12) Probe size should not exceed 27 inches in length and 3.5 inches in diameter. This solicitation is open to all businesses regardless of size. Size standard for small business concerns under Standard Industrial Classification (SIC) Code 3823 is 500 employees. All responsible sources may submit an offer which may be considered.(0240)

Loren Data Corp. http://www.ld.com (SYN# 0299 19950829\66-0003.SOL)