|
CS' j ��,i,1,F��s, dd �`� •'tP f� 1 k�'�n.-. i' +tWwY1 ri4C` F F i�'Y��� >T
<br /> W[SifRH GtU-•EHGIH;(RS
<br /> ..,r. 1 I—C,•;. w111 !". :.UI. ,'-Ir 1 tU .a Iliad
<br /> w.r, w:, :I ,u.1 11.11r -' rl.,' rcl:trtll-bale loll 1.!,1ch 111yiltrl IIn', it :,
<br /> w:r, :Ir c I hf ,., ! ,. r; r I; 111r t,r:l.111( I1, slotted cus.nq or w,-LI
<br /> :.cr,,r-rrn w, : . t..• ,•rrc (•1r:.u,r I. '1'no holl,)w-stem atlrlern wl11 he tit earn
<br /> rl,,ur, �: 1.� l .:erl� lr„r lntn trr ,,�nlr,nle cross;-car,t.faminatic,n,
<br /> h'a•I I Ir. l lr 'I I"�, I. 1
<br /> In ;vlulI I(JG to LLe informatloll included in Lhe lithologic logs kept for
<br /> soil uorl-rnt:, tl.r_•., drain size, visible contaminants, "sniffer”
<br /> ro.ul I nils, ('01 01- chanrle:;, groundwa!er elevation, Lhickness of individual
<br /> un r t s I rl well cunssl ruct.ion log will be kept for the groundwater II
<br /> nronllorlrlrl wells, It will incLude the diameter of the borehole, the
<br /> size, , kind ani. :lepth of casing, the size, kind and depth of well
<br /> screen or slctt.ed casing, a groutinq record (materials, intervals and
<br /> placernent rnaUiuds), the size and interval of the gravel pack, the total
<br /> dr•pr r1 or the Well, type of the: well , the date tested, static water
<br /> level prior to the• test , Lyric- of Lest. pump or bailer, total time of the
<br /> of pumpinrl/twsillnn, the rale of pumping/bailing and the final water
<br /> lc•wol .
<br /> Groundwal er MeasttrC•n.ent and Srtmpl i ng
<br /> F'ollowanq dovelopment., the water level in the wells will be allowed to
<br /> eynililrr:ate for a minimum of Ott flours. Isefore groundwater level
<br /> :hUo:atlre•ftivnl P rare taken, each w.-]l will be :,urveyed from a reference
<br /> Point to the tor, of t l,rr wk•11 c-,ar.ing. A araduated tape will be used
<br /> with a candur-tivity probes to aicrtsure the d<,rtrtl to water or free product
<br /> ihrat may I,c: Ilorrling on the surfare of the water. This type of probe
<br /> will c•nah l c• aecurute ri a:.ure:nt tit of the free product-water _,nt erfaee,
<br /> 1f present., and will therefore indicate thickness of that floating
<br /> product a standard n:-ac-lace, at leat;t two measurement, will be
<br /> rnadr,, if two mectsurcmcnt. of static water level made wlt_hln a few
<br /> minute:; il:, Plot aelree within 0•01 or 0.02 ffrcL, measureitionts will be
<br /> ret,c•r,t cd unt.i l the reasea,a for the lack of agreement. is do fermi ned or
<br /> unt a 1 t hn results Uri shows. to I." reliable.
<br /> B.:for(. o-iampl i nq, the well:; will be pumped or bailed to remove 5 casing
<br /> Volum::, of w,lter- Switpling of tire groundwater Lencath the free product.
<br /> l,ryor and 1.alnplinq the free product will then be :ac-comolished by
<br /> hailing Lhtr welll w1Lh it pre:-cleaned bailer. Care• will be Larsen t.o not
<br /> contaminate: the groundwater sar,plr? with surface water or 'rue product.
<br /> water sample-s will 1xi taken in triplicate. Poplic•ate samples will he
<br /> forwarded tea the primary laboretory anis the, t h err! ::alup'_, will at-
<br /> 2analyfecl by WL•GN portable lab
<br />
|