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TI:CHNICU IP!CIPICU'ION

!2! EXCAVATION OP CONTAMINATED MATEUALS

PlCILLO FARM IITI

KENT COUNTY I JtHODI ISLAND

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Is•ued f or ~ Ji> 21( I« Revised a nd Reiuued for Bid 111./f ~ .¥ I#If Iuued for bid 1/.M ~ NJ- AI#­

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Excava tion of Contaminated SpaC:ification _l•n Materiah I9T61-02-CSP-02 I

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TECHNJCAL SP CIFJCATJON OR HE

EXCAYAIJON OF CQNTAMJNAT!D MATER IALS

figLLO ~RUill KENT COUNTY, RHO DE ISLAND

1 . 0 CEN!RAL

l . 0 AIBJI!:VIATIONS

J . O QUALITY' STANDARDS

4 .0 SUBHJTTALS

5.0 MAT!RIMS

6 . 0 PJ!LD OPERATIONS

l471Y 04 /l0/11

19161-02-CSP-02

R ALS

1.0

Thia t.echnicel apecificltion definu the techniCil requirements and e aUblhl\ea the quelitr end wor llmenahip required for the excevltion of conUMineted IUUriela .

3.0 AIIUVlATJONS

The abbrevhtlona Hated below, where u..d in thla apecifiCition, ahell heve the following Mining:

era Code of Fedeul ..guhtiona PCI Polychlorinated l iphenoll

3 .o 0\.!ALJD STANDARDS

The Contuctor ahlll control the quality of item• end urvices to Met the requirements of thil techn icel apecific&tion, eppltceble codes end 1t1nderda, deaiqn duwinQI, end other Contract document• .

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4 .1 Glii!RAL

Engineertnv documentltion requirements are au~m~erhed on rorm 19161 DR, end an eugmented by deteiled requ.i nmenta in thil speci!icetion . Bechtel t:nvtronmentel, Inc. (BEl} will determine if documentation h complete u submitted by the Contractor and reserve• the riqht to d isapprove any ••terlall, Jchedulea, Mthoda, equlpNnt, plen1, drewinqa , or other• 1ubmi ttell thet do not meet the Contract requt rementa.

4 .1 MATERIAL

Unleaa noted otherwise , meterial, equipment, and duwinq aubmltUla shell be mede to 8!:1 for review at lent two weeka prior to uae or implementation .

4 , 3 CONTROL PLAN

Prior to beq t nning the work, the Contractor atull submit to BEl for rev iew 1 phn to control ae.SimenUtion end dust durinq conat ruction, excavation, decontami n1tion, end revndtnv ectivitiea . Work ah&ll not beqtn until these plena have been reviewed and accepted by BEl .

2478Y 04/20/811

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S . O JIATtiJALI

5.1 S!DIM!NTA'l'lotl aARIII:RS

ledhwnt1tion burien 1h11l conaiat of aediMnt•tion fabric aecured by wooden or Mtal poata. The fabric ahlll be Amoco ProPea: lilt Stop oc u approved equ1l. Contnctor ahall au it to 11:1 for review pr ior to purch..e 1 cltllov cut if In 11ternate 1111Urhl h propoaed .

5 . l FILL AND BACKFILL

Fill and b.ckflll •'-•11 be 1n .ccordance with technical a peel flcatlona.

5 . 3 lOlL COVERS

Soil pile coven shall be ah..u of T-65 Griffolin or 1pproved equ1 l. Prior to purch111, Contr1ctor 1h1ll aubrnit to lEI 1 cetdo; cut for review if 1n alternate 111terhl h propoaed .

6 . 0 fiELD OPERATIONS

6 . 1 SEDIMENTATION BARRIERS

6 . 1 . 1 S.diMntatlon burien ahall be iut1lled 1nd milntlined to miniMize the 1mount of aoi 1 eroaion . larrie n ah11l be placed on the downh ill side of ea:c•vated and revuded ueu .

""C'-n = = = 6 . 1. 2 Sedimentation hbric ahall be erected wit h wooden or ..tal poata in accordance with manufacturer's reca-nendationa .

6 . 1 . 3 SediMentation barriers and eroded contaminated 111aterhl shall be removed foll owi nt;~ eacavation and final decontami nation of equ i pmen t and d iapoaed alonv with other contaminated solid wutea from the alte .

6 , 2 DUST CONTROL

The Contuctor shall furn t ah , operate, and maintain all equipment necenuy to mi nimhe and control duat t;~ene ntion . Water or calcium chloride application wi 11 be adequate .

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6 . l !:XCAVATJOtl

6 . 1.1 The Contractor ahall furnish, operate, ud Maintain all nece11ary equ ip~Mnt to etcnate the I• three 10il piles and the ad]acent accuMUlated conta•in• ted •aterhJ , and load soil and othu wutea for tranaportat 1on.

6 . 1 . 2 All heavy equiPfMnt opeutou ahall pou..a • cunent and t.utetpired 1icenae to opente heny equipment (Hohtino lntlneer Licente) frOfl the lUte o r Jhode l shnd DepartMent of L1bor, telephone number (401) 4S7-1UD .

6 . 1.1 Contractor ah.tl notify the app ropriate utility comp1niea five wo rkin9 day a i n ad ance or stuttnv e•cavation when wo rk h perfo rmed i n the ... tcinity of , or above, auch utilitiea.

1 . 1 . 4 The PCB Pile, Phenol Pile No . 1 , 1nd Phenol Pile No . 2 . ahall be eac1nted until the underly t nv liner h upoaed or until level with the surroundint tncSe . Cude 1nd bounduy at1ku wi 11 be establhhed by others to define the horhontll 1nd ...erticll limits or e•cnation 1t each pile .

1 . 3 . 5 The piles shill be CO'IIUd with T- U Griffolyn flbric in 1r111 where no ••cav1tton h being performed. . When utn 11 forec11t, eac1vation are11 ah1ll be covered 1fter completion of the day 's activitiea .

6.3.6 Org1nic m1terllll including stumps, roota, debri 1 encountered during eaclvatton, 1nd debria located ad j acent to the on- aite n•ple tuiler ah11l be d hpo11d of with the cont1min1ted aoil. The empty 55-glllon druma 1nd overp1ck drums nml1nin9 on lite shill be cruahed 1nd combined with the soil tor d hpoul.

\.16 . 3.7 Deleted.

6 . 3 . 1 The Contnctor ahall )Old the miacelhneoua wute IL'!. nmplea loc1ted in the on-site sample trailer tor off- •it• dhpos1l . These umples ••r consist of liquids, sollda, and sludvu . Loadin9 wil 1 be 11 directed by and to the sathflction of the transporter and I!I .

6 . 1 . 9 The sequence of eacantion shill be u directed by the BEl such that ueaa alre1dy eaciVated 1h1ll not be recontamin1ted . The PCB pile shall be excavated fir 1t. Eacav1tion shall proceed fr om clean or previously eacavated areas only.

2471Y 04/20 /18

6.3.10 Tha cuttino ado•• of the equipment und for e.ciYating contaMin~ted •ateriill shall be toothlen (plated) to prevent oveuac:avation and the contaminatlon of underlying soi 1 .

6 . 3 . 11 All ear.avationa shall confor11 to the 1pecified linea, ttadea, sections, and elevation• thown on tha d.. ign draw inoa and u directed and rteld verified by III. Tolerances ahall be aero to 11inua 0.1 feet .

1 . 1.12 Side a1opea ahall be protected to prevent conta11inated •aterill from eroding or alouohing into, and reconta•inating, clean aubgude. Any addit ional ruterh1 relftOval. tranaportation and dispos al, 1nd repl1cement caused by auch erotion or sloughing shall be performed It no ldd itionll coat.

1 . 3.13 LoadinQ 1nd tunaportin; contlminated material ahall be in accordance with the techn ical apecificatlona .

6 . 3 . 14 The method of ezc:avation shall no t weaken surrounding areas or damage atructurea auch as ILl. -a 110nitoring walla or puts thereof that are -completed or under construction . !dating n structures and property aurvey monuments adjacent to or within ezc avation aren 1h11l be protected = 1nd supported to prevent settlement. Any dama ge to atructurea or equipment resulting from ca= u.cavation shall be repaired or repllced inmed iately by the Contractor at no add itional colt. Contractor ah1ll reeatablhh 1ny property corner 110nu•nta disturbed and/or daMaged during ezcavation operations at no additional coat .

6 . ].15 Ann being ezciYated shall be mainta i ned in 1 clean condition, and free from w1ter, leaves, brush , aticka, trash, and other debr h.

6 . 3 . 16 In the event of unluthorhed eacavation, or where eacavation h performed inadvertently to depths below the indicated elevations , the aubgrade s hall be restored to the proper elevations 11 shown on the design draw i no• and/or 11 di reeled by BEl at no add itionll coat .

6 . 3 . 17 Runoff water and ponded water in c onstruc tion areas wh ich are being eacavated ahall be controlled through sedimentation barr iers. Sediments within the eacavated areas and the waste

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ltlU - Ol -CSP-02

piles shall brl controlled by using aedhtenht ion burien to •hi•i&e recont111ination and/or cros a-contamiRation of uncont1Min11ted areas .

, , J , ll Backf ill shall be plaeed in acco rdance wit h tt- e technicll apeciticltiona followint teatint and acceptance of the borrow source by EPA .

6 . 3.19 lacl'lated ••terhl shall be loaded for transportation.

6 . 3.20 The Contuctor 1h11l maintein ahglnt ueu and vround coven, and instill and remove truck dupe curtlina during loeding operations .

6.3 . 21 All equipment shall be decontaminated by the Contractor prior to leavin9 the site .

6 . 3.22 All contaminlted peraon1l protective equipment shill be lo1ded and disposed with the solid wute .

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