R98-26 ACCEPTING THE PROPOSAL AND AUTHORIZING AN AGREEMENT

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Soils Analysis: A thorough soil analysis will be performed to determine the foundation design parameters for the tank. Each soil analysis will be performed in two parts. First, an extensive ex- ploration pro�ram will be performed, drilling one boring to a depth of 50 feet or more and drilling two borings to a depth of 25 feet. While in the field, each boring els �d be°a�lc�eri ba�ck for Penetration Test method. Also during the exploration program, samP the laboratory testing. The laboratory testing will include classifying the materials and a consoli- dation test to deternune the compressibility and stress history of the material found. Finally, and most importantly, the soil analysis will deternune the soil bearing pressure and type of foundation required for the new tank. This analysis and foundation determination will take into account the soil condition and the loadings for the proposed tank styles. rmation to roperly design the � he contractor accurate info P - al sis is re uired to give t uali soils an y Q tm o eration to Q tY tank and foundation and submit a competitive bid. TIC will observe the soils tes g p allow optimal utilization of the soils report recommendations to design an economical and struc- turally safe foundation. (This phase will be completed be SKS and TIC.} Design Memorandum: TIC will develop a detailed design memorandum. The design memorandum will include: • AWYVA standards which affect the ta�tk desig�r project will be addressed. Because there are new tank options for which there is not yet an AVVWA standard, TIC will identify these options and make recommendations for design requirements. In addi- tion, since present AWWA standards do not adequately address important issues such as: tank curvature, welding definitions, weld testing requirements, and other issues to reduce the future maintenance of the tank(s), TIC will include these aspects in the de- sign memorandum. . Illinois EPA requirements which affect the ta»k project will be addressed. TIC will review state and local submittal requirements and provide a list of these requirements in the design memorandum. • F'AA submittals which are rec�urred for corrstnrctiar of ele>>ated tarrks will be in- cluded TIC is familiar with FAA Form 7460-1 and have filed hundreds in the past. TIC will provide a copy of this form with instructions on how to properly complete it in the design memorandum. = . Telemetry/Communieation systems requiremer�ts for operatiojr of the new tank(s) will be addressed. TIC will address what requirements there would be to make the new tanks"compatible" with the present system which the City has on the existing two ele- vated tanks. In addition, TIC will provide a recommendation for a new type of control system to allow easier, more reliable operation and control of the existing tanks and the new tank(s). 3-5