Amendment 0008 LP10_ST01_SPECS_352023_PAGE10_30JUL2024.pdf

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Lower Pool 10 Habitat Rehabilitation and Enhancement Project
Solicitation number
W912ES24B0007
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This document appears to be an amendment to the specifications for the Lower Pool 10 Habitat Rehabilitation and Enhancement Project (HREP) Stage 1 contract. The key details are:

The specifications outline requirements for the installation and maintenance of floating and submerged pipelines during dredging operations. The pipelines must be properly lighted, marked, anchored, and maintained in good condition to avoid disruptions to navigation. The contractor must minimize interference with commercial and recreational watercraft and adhere to all Coast Guard regulations. The contractor is also responsible for protecting existing structures, utilities, and newly created access channels and habitats from damage or erosion. All work must be conducted in accordance with the contract's environmental protection requirements.

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Text version

Lower Pool 10 HREP St age 1

73 00 of t he cont r act .

Fl oat i ng pi pel i nes shal l be l i ght ed i n accor dance t o Coast Guar d Regul at i ons and at a mi ni mum vi s i bl e f r om a di st ance of 2, 000 f eet at t he wat er l i ne.

Submer ged pi pel i nes shal l be mar ked i n accor dance t o Coast Guar d Regul at i ons.

Submer ged pi pel i nes shal l be adequat el y anchor ed t o r est on t he bot t om of t he channel wi t hout movi ng or l i f t i ng. The submer ged pi pe shal l be moni t or ed t o ensur e t hat adequat e hor i zont al and ver t i cal c l ear ances ar e bei ng mai nt ai ned.

I n t he mai n channel , a mi ni mum cl ear ance of 12' shal l be mai nt ai ned at al l t i mes, f r om t he Low Cont r ol Pool El evat i on t o t he t op of t he submer ged pi pel i ne, i ncl udi ng t he anchor s and bal l ast .

Pi pel i nes shal l not be per mi t t ed t o f l uct uat e bet ween t he wat er sur f ace and t he channel bot t om, or l i e par t i al l y submer ged.

Pi pel i nes shal l be of good qual i t y and sound mat er i al . Pi pel i nes shal l be mai nt ai ned i n good condi t i on and f r ee of damage t hr oughout t he dur at i on of t he wor k. I f a br eak or l eak occur s, di scont i nue dr edgi ng unt i l t he pi pel i ne i s r epai r ed. Al l di schar ged mat er i al due t o l eaks or br eaks shal l be r emoved and pl aced as di r ect ed by t he Cont r act i ng Of f i cer .

Al l anchor s and r el at ed mat er i al shal l be r emoved when t he submer ged pi pe i s r emoved.

3. 8 NAVI GATI ON

The Cont r act or shal l mi ni mi ze i nt er f er ence wi t h navi gat i on of commer ci al and r ecr eat i onal wat er cr af t . The dr edgi ng equi pment and pi pel i ne shal l not i nt er f er e wi t h bar ge t r af f i c .

The Cont r act or shal l f ur ni sh and mai nt ai n navi gat i on war ni ng si gns al ong t he pi pel i ne i n accor dance t o Coast Guar d Regul at i ons.

Cont r act or ' s Bar ge t r avel wi l l not be al l owed i n ar eas desi gnat ed as " excl usi on zones" and i n wor k ar eas r est r i ct ed due t o eagl e nest i ng.

3. 9 PROTECTI ON OF STRUCTURES, UTI LI TI ES AND DREDGED AREAS

The Cont r act or shal l t ake al l necessar y pr ecaut i ons t o ensur e t he pr ot ect i on and st abi l i t y of pi er s, bul kheads, and ot her st r uct ur es wi t hi n or adj acent t o t he wor k.

The Cont r act or shal l i dent i f y and l ocat e al l pi pel i nes and ot her ut i l i t i es i n t he v i c i ni t y of t he wor k and t ake al l necessar y pr ecaut i ons t o ensur e t he pr ot ect i on of t hose ut i l i t i es. The Gover nment does not war r ant t hat ut i l i t y i nf or mat i on shown on t he dr awi ngs i s cur r ent or compl et e.

The Cont r act or shal l t ake al l necessar y pr ecaut i ons t o pr ot ect newl y cr eat ed access channel and habi t at s i de s l opes f r om er osi on. Pr i or t o accept ance, r epai r any ar eas t hat have er oded or s l i d due t o any r eason.

Re- est abl i sh t he gr ades, el evat i ons, and sl opes accor di ng t o t he dr awi ngs. Conduct al l wor k i n accor dance wi t h t he envi r onment al pr ot ect i on r equi r ement s of t he cont r act .

SECTI ON 35 20 23 Page 10

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