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6.1.A. - Page 20 <br /> • Modify Annulus where pipe goes through pier caps (far example, fill wit� suitable <br /> restraining material, either flexible or semi-rigid). Note: any option th�at includes <br /> '"rigid" type suppc�rts will need to also address the potential for bridge <br /> deformations ! s�ttlements, to m�k� sure there is a combtned-corr�patible <br /> upgrade. <br /> r Modifiy bridge <br /> � Install new parallel pipe. This may be a self-supporting pipe over the water <br /> channel; nr an encased 1 trenchless �ipe und�r the wat�r channel. <br /> The "inst�ll new parallel pipe" np#ions may be s�itable if it is found th�t the bridge <br /> weakness ancf ne�ded u�grade is more costly than the anstallation of a new pipe. <br /> Consultant wil! wri�e a shart letter repart with the existing sys#em evaluation, as wel1 as <br /> sketches of the prapos�d pi�e modVfications, and submit if ta RVIIC. Consul�ant will meef <br /> with RWC to discuss possible design 1 retrofit options. Consultant's work scope below is <br /> based on the assumptian that modificativn of the existing pipe I pipe suppor�s is bath <br /> t�chnically suitabl�, and will be adopted; sho�al�i upgrade �of the bridge or a n�w pipe <br /> optic�n b� c�ic�s�n, then the additional effort to clesign the new pi�e (or bridge upgrades <br /> will be an optional task), <br /> Consultant will tl�en deve�op and submit the 5p% desi�n subrnitt�l. This will include the <br /> foilowing drawings (s�e Tabl� 2): site plan (establis�ed from existing drawir�gs); pipe <br /> profile (established from existing drawings); pipe support details. Consultant will inclucfe <br /> a list of techni��l specificat�ons, and a cost estimate consistent with the 54% design. <br /> The Ci#y will pravid� Consultant with comments_ Comments which require ne+,v desigr� <br /> concepts and sub�tantial new work should b� pravided based on t�e 50°lo subrnittal. <br /> Cansultant wilb then develop the 90°lo design submittal. This will include all drawings <br /> (likely 3 sheets); teehnica1 specifications; cost es#imate; draft calculations. This package <br /> is meant to be e��entially complete. The C�ty will provide Gonsultant with +comments; <br /> intended to be primarily editorial in nature. <br /> Can�ultar�t will ther� update �he contract dc�cuments t�a reflect �comments; incorporate <br /> with o#her items (Tasfcs 1, 2, 3}. Consultant will th�n iss�ae the 10a%a cvntrac# <br /> dqcuments (drawings and specificativns). Cor�sultant will pravide stamped c�lculations. <br /> Cansultant will �rc��id� the final engineer's estimate. <br /> Facility Numk�er af Potential Drawing List for Contract Dacuments <br /> Drawin s <br /> Pipe Bridge 3 S�te layout an� general notes: 1 sheet. Pi�ae: 2 <br /> and Pipe sheets. <br /> (�harebird <br /> I�I�nd <br /> Pipe Bridge 3 Existing Pipe Repair: � sheet. If needed: site layQUt <br /> and Pipe and pipe modifica#ions (seismic) (2 sheets) <br /> (Bridge <br /> Parkwa <br /> Table 2. Dr�wing L�ist (Poten�ial) <br /> ATTY/A9F2l2Q92,009/G&E EN�INEERIN�G Page 16 of 30 <br /> A�Ihf4�111f111? <br />