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f <br /> thtse standards, or standards adopix _,d by the Ss)uthf;m Ca3ifurni�l C lhodic PriAeclion <br /> Cromniittec. in December 1969. <br /> C'asing [hat cannot be reinoved Azi11 he acicgtG'atcly perforated or punctured at specific intervals <br /> to allow pressure injection of sealing ruater[als into gran)-ukir h ckfill said all olhc�r voids that <br /> require sealing, <br /> The following requircmQnis shall be observed in placing till and sealing material in cathodic <br /> pro«ction wells to be destroyed. <br /> I_ Flatxrne.nt Method. The well shall be filled and scalcd wi[h ipprupriate materi;L[. <br /> upwnrd from the bcattom of the well using a tremie pipe or equivalent. <br /> Sealing rnarerial OAll be placed by nic.tbads (such as by the use of a tremie pipe or <br /> -equivalent) that prevent frccfall, bridging, or dilution of the m3aling materials, or <br /> A %eparation of aggregates frnrti sealant%_ Scaling materials s;ball rto[ be instnllr�d by <br /> frecfall unless [he interval to be sealed is dry and nn deeper [ban 30 feet below ground surface- <br /> Z. Timid_ of placernent_ Scaling rmilcrlal shall be platted in one continuous upenatiou <br /> (ur "pour") from the bet tom ttM th.c Ikip of the well unkcm,corlJiIiurv; in tlic w�;I I aii:tait. <br /> IhaI sealing upc.r:t[ions be jonducted 1n a staged manner and prior approvaI is obtained <br /> frorn the enforcing agency, <br /> .3. Ground Water flow. Spcc(aa c�Irc shall bu uscd to restrict the now u+f ground water <br /> in in n will while.fill and scaling material is heing placed, if sub40rface pressure causi jig <br /> the flaw of water is significant. <br /> 4, Se3Iing Pr gurc. Pressure rct uired for placement of cemLii I-b ased _seaIinf material <br /> shall be malnu3iticd long enough for the cement-based staling material to set. <br /> 5. Verificatinn. Vcrifiu lfi?n shall be made that [lie volwnc of sealing and fill iaterial <br /> p]raced in a well during dcslruciOn up�;rn lions equals or exceeds the irrolunic. to be f111cci <br /> and s�alcd. `I`his is u) lielp de-terinine that the wuli h:is been prcapurly desiro}'ed :1nd <br /> that no jamming or bridging of the fill or sealing rnaicrial has occurred. <br /> D. -Sea I i n2 materials, Materials used for sealing za1badie proteciinn wells for duo iruci1nii sltali <br /> hove loin per meabiIiIieq so ih�tt ihte Nrulumc 4)f water.and passible pollutants and cont aininants <br /> passing through thern will be tar iniioiinaI comscq❑cnct_ Scxrling maier6I shall bC coniparih[c <br /> with the chemical cavironmunt into which it is placed and shall Have. Mechanical proper[ics <br /> oornpatible with present and futarc silc iL%m <br /> Suitable. sealing matcrials tnclinte neat cement, sand-cemenr, cjsineretc, and heottoniie, $s <br /> descrihed in Sectinn 9 cif[hc Wimvr Well Randards. Sealing materials userl for lrinlming xonus <br /> t)r fr tc[ured ruck shall he ceniew-h;isud, as dc�wribed in Subsection B. above_ Drilling mud or • <br /> drill cuttings shall not be tiScti as guy p;srt of u ,4t+ling malarial for well destruction, uncrctc <br /> may be used as �t sculirig material at thu approval of the cnfurcing xgcncy, <br /> F. Fill Material, Many All matcria[s dre suitable for destruction of cathodic protection wells. <br /> 7Trtcge include, clean, washed sand or-gravel sir seating material. Fill material shall be free of <br /> pollutants and corli;tmintLnls and shall not he subject in d&A)tnposi[ion or �:onsolida(jon itftcr <br /> pl.tcemertt, Fill material shall TiM carLmin drilling mud or cuttings. • <br /> -73- <br />