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<br />.~~ <br />II- <br />BkF <br /> <br />, <br />. I <br /> <br />. <br /> <br />1 <br /> <br />~ <br /> <br />~ <br /> <br /> <br />In addition to those information we have already collected and studied, BKF will study the data <br />provided by the City to further understand the project and will perform a thorough research to collect <br />all other drawings, report, maps, and master plans related to the existing S-6 pump station. <br /> <br />In our preliminary search of the pump station site, record document revealed that the propeny is <br />apparently owned by the State of California. The site apparently has adequate room for a new pump <br />station and construction lay down area. BKF will research in detail to confirm the property boundary <br />of the pump station site, and assist the City to obtain more land for a new pump slat ion area if needed. <br /> <br />2.2. Perform necessary (and required) site investigation of the pump station S-6. Schedule with City <br />Utility Operations staff or others to perform any operational tests to determine operational extent and <br />condition of existing pump station's electrical, mechanical. pumping and piping systems, dry well <br />condition, air compressor system and overall pump station building capacities and functionality <br /> <br />BKF will revisit the existing pump station S-6 site and perform the following task: <br /> <br />. We will meet with the City staff, panicularly the utility operations staff. to funher understand the <br />condition and operation of the existing pump station. <br /> <br />. Together with the operations staff, we will perform operational tests to determine operational extent <br />and condition of the existing pump station's electrical, mechanical, pumping and piping system. <br />We will investigate the dry well condition, air compressor system, and overall pump building space <br />for possible additional temporary equipments. <br /> <br />2.3. Evaluate existing pump station operating criteria, capacities, operational constraints and known or <br />found deficiencies in order to determine what is necessary to keep existing pump station operational <br />in the future for the next three years. Develop recommendations for short term (up to three year <br />period) improvements needed for all existing pump station systems, structures and appunenances <br />fully operational until a new pump station can be designed and constructed while the existing pump <br />station is kept operational <br /> <br />The following are constraints and deficiencies known to us and steps we will take to improve the <br />existing pump station: <br /> <br />. We I/llderstalld that aile o{the existing 50 HI' pI/IIII' (1'111111' #3) has hem mlllpletely I/pgraded alld <br />call1l/eet prelly ml/ch the pealfl"'\' capacity. The sl'Colld 50 HI' pI/IIII' (PI/IIII' #2) has signs (J{ <br />H'orn out, and cannot meet its designed capacity. We will evaluate and compare the henefil and <br />cosl effectiveness in order to determine whether to upgrade this pump or to install a new pump in <br />the existing wet pit with the intention of reusing this new pump, the VFD and possibly the <br />electrical control in the new pump slation. <br /> <br />. The existing pumps are presently being operated hy aging variahlt, .\pel'd dr;l'l' ,,'\'ifh a /Ill/1Il1ll1 <br />switch to select I\'hich {llIlIIp to he tl/rlled 011. It is aI/I' IIlUler.l'/alldillg thtllthi.- old design has <br />('(II/ght ollfire Ollce alld allllpgrade is desperately lIeeded. We will identify the possihle location <br />for Ihe new temporary VFD and further investigate this equipment with the intention to relocate it <br />to the fulure new pump station to save the overall construction cost. <br /> <br />2 <br />