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1101W." 14'e,!st futuire, to track changes in structure, increase in size or occurrence in defects, and identify areas requiring mitigation. Consultant will use survey of !Structure to identify location,of defects observed, As part. of evaluation, calculations will be performed to check the original design capacity usiingavaiiable information providedtoConsultant bythe County and the tank manufacturer in addition to the results of the survey, These c4lculations Will be used to formulatiethe technical memorandom outlined in Task 04 to determine if the structure still has remaining useful life or if it is no longer safe for operation. A brief surnmary of fiOcl notes and initial findings will be submitted to the client at conclusion of Task 03., Task 04 Technical Memorandum and Workshop The Consultant shall prepare a prelirrwinary technical memorandum (TM) summarizing evaluations of'the data collected and results of structural testing. The TM will include up to three (3) options for mitigating or upgradingthe existing oxidation ditches and bridge structures, a comparison of the benefits and challenges of implementing each option, and a rough, order of magnitude engMeer's estimated cost for each option. nos preliminary TIVI will be provided electronically one week prior to being presented in a Workshop formatfor IRC Staff, The Workshop wfll culminate in discussions with attendees that will result in a final recommendationfor structural improvements at the West WWTP oxidation ditches. A summary of the Workshop discussions will be created and distributed to attendees within three (3) days of the Presentation, b. Final Evaluationaind Recornimendation'TIVI Following the' Workshop, the TIVI will be updated to include review comments and to include the final recorn mend ation(s). One (1) electronic copy and four (4) draft and copies will be provided to IRC Staff. Deliver-ables Task Defiverable 3 Preliminary Field Notes and Findings . . . . . . . ................... 4 Draft Structural Evaluation'TM 4 Final Structural Evahmtion TM &,'hedule The anticipated schedule shown below is based on the weeks after the forinal issuance of the notice to proceed by the County: I