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ATKI NS <br />future, to track changes in structure, increase in size or occurrence in defects, and <br />identify areas requiring mitigation. Consultant will use survey of structure to <br />identify location of defects observed. <br />As part of evaluation, calculations will be performed to check the original .design <br />capacity using available information provided to Consultant bythe County and the <br />tank manufacturer in addition to the results of the survey. These calculations will <br />be used to formulate the technical memorandum outlined in Task 04 to determine <br />if the structure still has remaining useful life or if it is no longer safe for operation. <br />A brief summary of field notes and initial findings will be submitted to the client <br />at conclusion of Task 03. <br />Task.04 Technical Memorandum and Workshop <br />The Consultant shall prepare a preliminary technical memorandum (TM) <br />summarizing evaluations of the data collected and results of structural testing. <br />The TM will include up to three (3) options for mitigating or upgrading the existing <br />oxidation ditches and bridge structures, a comparison of the benefits and <br />challenges of implementing each option, and a rough order of magnitude <br />engineer's estimated cost for each option. <br />This preliminary TM will be provided electronically one week prior to being <br />presented in a Workshop format for IRC Staff. The Workshop will culminate in <br />discussions with attendees -that will result in a final recommendation for structural <br />improvements at the West WWTP oxidation ditches. A summary of the Workshop <br />discussions will be created and distributed to attendees within three (3) days of <br />the Presentation. <br />b. Final Evaluation and Recommendation TM <br />Following the Workshop, the TM will be updated to include review comments and <br />to include the final recommendation(s). One (1) electronic copy and four (4) draft <br />hard copies will be provided to IRC Staff. <br />Deliverables <br />Task <br />Deliverable <br />3 <br />Preliminary Field Notes and Findings <br />4 <br />Draft Structural Evaluation TM <br />4 <br />Final Structural Evaluation TM <br />Schedule <br />The anticipated schedule shown below is based on the weeks after the formal issuance of the <br />notice to proceed by the County: <br />115 <br />