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San Marcos Wastewater Masterplan <br />PBS&J <br />Austin, Texas <br />February 6, 2003 <br /> <br />3. Preparation of equipment to be assigned and transported to the project site. <br /> <br />Hold a project work session to ensure that all parties are in agreement with the selected <br />flow monitoring locations, to ensure that all work is conducted in the most economic <br />method and that proper communications are developed between, PBS&J, GSWW, and <br />City of San Marcos personnel, and that all applicable safety procedures are in place. <br /> <br />5. Plan for traffic and pedestrian control to ensure public safety and convenience. <br /> <br />The compensation for this task will be on a "Lump Sum" basis, <br /> <br />Task 2 - Installation, Removal and Maintenance of Flow Meters/Rain Gauges <br /> <br />install fifteen (15) velocity/depth recorders and/or lift station monitors at strategic manholes <br />and/or lift stations within the study area to isolate and monitor wastewater flows in the collection <br />system. Five (ii) continuous rainfall gauges with 0.01-inch accuracy will also be installed at <br />various locations within the study area. The exact locations for flow meters will be determined <br />during the Task 1 activities. <br /> <br />The flow metering equipment will be maintained and data collected (7 to 10 day cycle) for a period <br />of sixty (60) days to cover representative dry weather flow and cover three or more significant <br />rainfall events. Four (4) site calibrations will be performed at each meter site during the monitoring <br />period. <br /> <br />The compensation for this task will be on a "PerMeter-Day" basis. <br /> <br />For the purposes of this proposal, a meter day is defined as a single 24-hour period that the flow <br />monitoring equipment is installed in the City's wastewater collection system. <br /> <br />If, for any reason, dry and wet weather flows cannot be established during the basic metering <br />period of sixty days, flow measurement may be extended at the Engineer's direction (see Table 1 <br />for extended metering rates). <br /> <br />Task 3 - Flow Monitoring, Data Management, Engineering Evaluation and Report <br /> <br />This task consists of analyzing the flow data from the fourteen metering sites and presenting the <br />results in the form of a report, including the following information: <br /> <br />1. Data provided in electronic format, as collected. <br /> <br />2. Tabulation and presentation of the collected wastewater flow and rainfall data for the sixty day <br /> period. <br /> <br />2. Hydrographs showing hourly flow in graphical form showing diurnal variations and peak flows. <br /> <br />3. Development of the average dry weather flow, two hour peak dry weather flow, 24 hour <br /> maximum wet weather flows and two-hour peak wet weather flows from the collected data <br /> <br />fl Engineering/San Marcos/Flow Monitoring Proposal,doc <br /> <br /> <br />