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EXHIBIT B SPECIFICATIONS FOR LAYING PIPE Work Included The Contractor s h a ll remove and rep lace so much o f the s tr e e t and highway pavement as may be necessary; excavate trenches and p its to requ ired dimensions; excavate b e ll-h o le s construct and maintain a l l bridges requ ired fo r t r a f f i c c o n tro l; guard the s it e ; unload, haul and d is trib u te pipe, f i t t i n g s and accessories which have not already been unload­ed, hauled and d is trib u te d ; la y and te s t pipe; place f i t t i n g s va lves and a ccesso ries; rearrange conduits, ducts, or pipes where necessary; rep la ce a l l damaged drains, sewers, or other stru ctu res; ch lo rin a te completed pipe lin e ; b a c k fill trench and p it s ; remove surplus excavated m aterial and clean the s it e o f the work. C ontractor»s R e s p o n s ib ility fo r M aterials The Contractor s h a ll be resp on sible fo r the safe s to r ­age o f m ateria l furnished by or to him, and accepted by him, and intended fo r the work, u n til i t has been incorporated in the completed p r o je c t. Alignment and Grade A l l pipe s h a ll be la id and maintained to the requ ired lin e s and grades, as shown on attached drawings, w ith f i t t ­in gs, v a lv e s , and hydrants at the requ ired lo c a tio n s ; and w ith jo in ts centered and spigots home; and w ith a l l v a lv e and hydrant stems plumb, unless otherwise d ire c te d . Wherever e x is tin g u t i l i t y structures or branch connec­tio n s lead in g to main sewers or to main drains, or other conduits, ducts, pipes, or structures present obstructions to the grade and alignment o f the pipe, they s h a ll be per­manently supported, removed, re lo c a te d , or reconstructed by the Contractor through cooperation w ith the owner o f the u t i l i t y , stru ctu re, or ob stru ction in vo lved . In those in ­stances where th e ir r e lo c a tio n or reco n stru ction is im­p ra c tic a b le , a d e via tio n from lin e and grade w i l l be ordered, and the change s h a ll be made in the manner d ire c te d . No d e via tio n sh a ll be made from the req u ired lin e or grade except w ith the w ritte n consent o f the Engineer. Excavation and Preparation o f Trench The trench s h a ll be dug to the alignment and depth req u ired . The trench width may vary w ith and depend upon the