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<br />e <br /> <br />e <br /> <br />B. Aerobic Digesters: Inspection of the aerobic digesters will included taking one of the <br />digesters out of service for inpsection of all diffusers, air piping, drain piping, etc. The <br />overall condition and integrity of the structure will also b~ inspected. <br /> <br />C. Blowers: Each blower that supplies air to the aerobic digesters will be inspected. The <br />inspection will include operating each blower in the manual mode and verification of <br />operation through visual methods or through actual field measurements of flow, pressure, <br />amperage draw, etc. Electrical components, including motor control centers and local <br />controls, will also be inspected for integrity. <br /> <br />D. Sludge Thickener: The existing gravity thickener will be inspected and tested. <br />Verification of operation through visual inspection will be performed. All electrical <br />components will also be inspected and evaluated as a part of the audit process. <br /> <br />E. Polymer System: An evaluation of the polymer system including dry polymer mixing, <br />polymer storage, polymer feed pumps and wet polymer injection/mixing will be <br />conducted. . Operation of all steps in the polymer mixing and feed system will be <br />observed during the audit. Electrical components will also be inspected. <br /> <br />F. Belt Filter Press: A thorough inspection of the existing belt filter press and all of its <br />ancillary facilities will be conducted as part of the audit. Operation of the belt press will <br />be observed at varying conditions (i.e. belt speed, sludge feed, polymer feed). These data <br />will be utilized to determine the operating efficiency of the belt press versus rated <br />performance. Electrical and control components will also be inspected. <br /> <br />G. Other Facilities: Inspection of all other ancillary components related to the sludge <br />handling facilities will be inspected as part ofthe audit. These facilities may include <br />sludge loading, miscellaneous pumping/piping facilities, controls, etc. <br /> <br />In addition to the actual inspections of facilities, interviews with operations and maintenance <br />staffwill be conducted. The interviews will focus on the vulnerabilities within the sludge <br />handling system. <br /> <br />Task 4 - Determine Proiected Slud~e Production <br /> <br />Historical sludge production and flow records and population projections will be utilized to <br />determine the projected sludge production from the Little Cedar Bayou WWTP. Existing <br />planning documents, population projections, and wastewater master planning documents will be <br />utilized. It is not the intent of this task to recreate data or perform an extensive planning study. <br />A task memorandum summarizing the projected sludge production will be delivered to the City <br />for comment following this task. <br /> <br />W:\LaPorte\sludge.SCO.doc 5/11/00 drh <br /> <br />Page 2 of5 <br />