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<br />1.2.1 Participate in a kickoff meeting with the City to review procedures and define the I <br />approach to performing the IDSE. In addition, the Engineer will, if possible, determine the <br />historic "month of highest TTHM/HAA5 concentrations" per Section 6 of the IDSE Guidance <br />Manual (EP A 817- B-06-02). <br /> <br />1.2.2 Develop plans for water quality sampling and system hydraulic data collection as needed <br />to meet the requirements of Section 6 of the IDSE Guidance Manual and provide enough data for <br />model calibration. It is anticipated that new hydraulic system data will need to be collected <br />during the month of highest TTHM/HAA5 concentrations. <br /> <br />1.2.3 Review available data and reports related to the City's water distribution system as <br />provided to the Engineer. The City will provide information to the Engineer including, but not <br />limited to, water system improvements not previously incorporated into the model, pressure <br />recording data, flow and tank level data, system operation rules, calibration studies and C-factor <br />studies, if available. <br /> <br />1.2.4 Review available water quality data related to TTHM and HAA formation in the raw and <br />finished water, and within the distribution system. The Engineer will collect additional new <br />TTHM/HAA5 data in conjunction with hydraulic data collection during the "month of highest <br />TTHM/HAA5 concentrations". <br /> <br />1.2.5 Update the hydraulic model of the City's distribution system to reflect changes III <br />physical characteristics and operations. <br /> <br />1.2.6 Perform initial water age modeling for the City's distribution system to assist in the <br />selection of SSS monitoring sites, per Section 6 of the IDSE Guidance Manual. <br /> <br />I <br /> <br />1.2.7 Calibrate the water quality model to available water quality data. Level of calibration will <br />be dependent on parameters available for calibration, as well as frequency and spatial locations <br />of sampling points. <br /> <br />1.2.8 Use water quality model to predict TTHM and HAA levels in the distribution system and <br />identify areas in the system for which high levels of THMs and HAAs are predicted to occur. <br /> <br />1.2.9 Prepare and provide the City with a SSS Modeling Study Plan and IDSE Report for a <br />Modeling SSS, per the requirements in Section 6 of the IDSE Guidance Manual. <br /> <br />1.2.10 Prepare for and attend up to two progress meetings with the City. <br /> <br />1.3 ADDITIONAL SERVICES/CHANGE IN SERVICES <br /> <br />1.3.1 The City may direct the Engineer to perform services outside of the scope of the Basic <br />Services as described in Section 1.2 above. The Engineer will submit a written estimate of fees <br />to the City and obtain the City's authorization prior to initiating any additional services. <br /> <br />1.3.2 Each material change (deletion or addition) in the services to be provided by Engineer <br /> <br />I <br /> <br />M'AI-IOSF <br /> <br />2 <br />