ZSI, Inc. System Integration

ZSI, Inc. TM
A Professional California Corporation

Reference Projects - A Sample of Contracts

Customer	Engineer	Description
Sonoma County Water Agency	Owner & ZSI, Inc.	Modified existing SCADA influent and effluent systems and integrating into the existing SCADA system a Tertiary WTP project to be completed Summer 2007.
Sonoma County Valley Sanitation District	Owner & ZSI, Inc.	Reprogrammed Effluent System PLC's outdated ladder logic program with IEC format and reconfigured OIU's text-based software with user-friendly graphical interface representing the process and ancillary equipment.
City of Vacaville	Tetra Engineering	5 MG Reservoir consisting of inlet / outlet valve automation, pressure monitoring, security, and integration with existing repeater site and SCADA software.
Sonoma County Valley Sanitation District	Owner & ZSI, Inc.	Reprogrammed Influent System PLC's outdated ladder logic program with IEC format and reconfigured OIU's text-based software with user-friendly graphical interface representing the process and ancillary equipment.
Sonoma County Valley Sanitation District	Owner & ZSI, Inc.	Automation of Return and Waste Activated Sludge Systems using cascade PID control, and Plant Drainback System. Revamped Reservoir R4 Pump Station Control System.
City of Rohnert Park	Winzler & Kelly	Replace 200HP Variable Frequency Drive at Pump Station with new VFD.
Sonoma County Valley Sanitation District	HDR Engineering	Automation of Aeration Basin dissolved oxygen using cascaded PID loops, five (5) 250HP solid-state starters, modulating valves, flowmeters, and pressure transmitter integrated with Modicon PLCs and Panelmate Operator Interface Units.
Sonoma County Valley Sanitation District	Owner & ZSI, Inc.	Automation of Aeration Basin Levels and Flow using a cascade loop and timed-averaging of flow samples to stabilize flow of plant through the diurnal and nocturnal periods.
City of Stockton	Parsons Engineering	Automation of Influent and Effluent Systems at the Regional Water Treatment Plant using Allen Bradley 540 PLC, remote racks, and Operator Interfaces connected via fiberoptics, 7 Cutler-Hammer VFDs (100HP-400HP), cable trays, and substation equipment.
City of Yuba City	HDR Engineering	Automation of Sand Filters, Backwash System, Instrumentation, and other ancillary equipment at existing Water Treatment Plant using redundant Modicon PLCs.
City of Brentwood	Carollo Engineers	Interim Booster Pump Station - SCADA and 900 MHz Telemetry project for inter-tie booster pump station, reservoir, and treatment plant.
McClellan, USAFB	CH2M Hill	Mc Clellan AFB - Leased-line Telemetry monitoring and control system for a Ground Water Remedial Construction of various well pump site controllers, process instrumentation equipment, and programmable logic controllers (PLCs).
City of West Sacramento	City of West Sacramento	Bryte Bend WTP - Instrumentation, monitoring, and control of a new Clearwell using a bubbler system, and modifications to existing Clearwell and Main Control Panel.
El Dorado Irrigation District	ATEEM Engineering	Telemetry System-Weber Dam Flood Alert. New construction to fabricate, furnish, and install control panels with central programmable logic controller (PLC) polling via radio link remote sites having PLCs used to monitor flows and water levels.
Citizens Utilities of California	Citizens Utilities of California	Parkway District - Radio Telemetry control system consisting of RTUs and Instrumentation for a SCADA system managing wells for customer consumption and power shedding and management.
California Department of Corrections - Vacaville	ATEEM Engineering	Emergency Bed Process Instrumentation and Control System - SCADA and Leased-line Telemetry project for pump station, inter-tie station, filter plant, and ancillary equipment.
Citizens Utilities of California	Norberg/Interface Engineering	Falcon View Well - Well pump station consisting of switchgear having 100 HP RVAT and 100 HP VFD, instrumentation, control, treatment, and Leased-line telemetry.
Citizens Utilities of California	ATEEM Engineering	Parksite WTP Methane Stripping Facilities - Installed new control system to interface with and be controlled by an existing PLC system.
Richardson Springs Community Services District	Norberg Engineering	Wastewater Treatment Plant Improvements. All new construction to furnish and install new MCC, pedestal, process instrumentation equipment, autodialer, and operations building electrical.
City of Sacramento	City of Sacramento	Riverside Water Treatment Plant Electrical Improvements. New construction to furnish and install medium voltage 5kV vacuum switch, 5kV cable, and 1000 kVA transformer.
City of Sacramento	City of Sacramento	Pioneer Reservoir "Flood Water Emergency Storage Basins" Facility and Washdown Automation. Retrofit existing facility adding a programmable logic controller and graphical operator interface unit to automate system thus reducing manpower requirements.
Winton Water District	ZSI, Inc.	Motor Damage Analysis. Field evaluate equipment and installation by other contractors and power quality of local utility for possible causes of multiple pump motor failures.
Louisiana-Pacific Corp.	ZSI, Inc.	Window Packaging Equipment. Re-wired controller from manual operation to automatic operation and provided ACAD As-builts within 24 hours from the initial request for urgent service.

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