TITLE
Recommendation to adopt resolution authorizing City Manager to execute all necessary documents with Allen Instruments and Supplies for the sole source purchase of eight Trimble NetR9 Ti-1 Reference Stations with Zephyr Geodetic 2 Antennas, hardware, and related software for subsidence monitoring activity at a cost of $190,966, plus $25,000 for any equipment repair, if necessary and if funds are available, over the next five years. (Citywide)
DISCUSSION
The Long Beach Gas and Oil Department (LBGO) monitors surface elevations for oil field-related subsidence control through 13 permanent, City-owned Global Positioning System (GPS) base station receivers that collect data in real time. This information is augmented by the semi-annual mobile surveying of 240 GPS benchmarks, collected from five portable monitoring receivers. In 2009, LBGO conducted a technical evaluation of its Real-Time Network (RTN) and determined that the RTN software and equipment was in need of replacement. The existing software was incapable of being upgraded and the receivers were beyond their intended service life. As a result, it was determined that certain system hardware and software upgrades were required. These upgrades would take place in three phases.
· Phase 1: Software replacement
· Phase 2: Purchase of portable GPS receivers
· Phase 3: GPS base station receiver replacement
Phase 1 was completed on July 21, 2009, when the City Council approved Geodetic Inc., as the company to provide the GPS RTN Software. Phase 2 was completed on June 19, 2011 with the purchase of five portable Trimble R8 GNSS Receivers, hardware, and related software from Allen Instruments and Supplies. The first part of Phase 3 was completed in June 2011 with the purchase of the five permanent Trimble NetR9 receivers.
LBGO would like to commence the final portion of Phase 3 with the purchase of eight Trimble NetR9 Ti-1 Reference Stations with Zephyr Geodetic 2 Antennas and associated hard...
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