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HomeMy WebLinkAbout8801_ROSCANS_1977r I. I I I I r r I I I f f. ', · .... . I r . ''. -. -:~:.:-~ ,.· .,._ . .... ·:... .. ~ _:._. :· ... "\ -·::~ (\. t:"' _:..~ . . .,... '-" P.r. Jeff· Portman, V-President r..:o.ob Creek Properties, Inc. Post Office Box 386 · B:-evard~ North Caroli~-28712 . . De~r. ~.-P~,~~t: -, _: ___ . ----,~---· ·.,,··; REFERENCE # 1 July 14, 1977 _, ' : Your request' .for·;'· th):! approval of an s.rea cove.ring appro:d.=a te.ly. 2 acres ioc.ated on S.R. 1540 i?:r"'Transylvania for_ the disposal of fly esh has been -e"""-<'"""'d : · .· "l · ... _,____. ' ... • . -• • • • <:::::,/ ...,)..;,:- . The pl.en as presented is approved provided access is strictly controlled so no ot::ber type w-...ste can be pl.aced on the site and afte.r fin.al cover i the total· a.re.a is grassed to prevent erosion •. .... ..: .... M ...... ".'.' •': •• --:~. : , ' · Mr.· .J .• , R· Moore. Jr.; Distri.et. Sru:rl.t.arl.an, ~-ill inspect the · site routinely fl'.'r compliance.· Oi,.1S/tg ·sincerely, o. w. Strickland. Supervisor Solid Waste Management Unit Solid waste·& Vector Control Branch Sanit:s:ry Engineering Sect.ion cc: T:=ansylvani.a County Ee.tlth Department -z'".:. R. J. Gus s:r..an Mr. J. w. :Mcore, .Jr. .. .. . ....... -.... ·--. ···--· --··-.-· ---·· -·· . , -.. .. . . --·-····· . •· ..... -- . .. ·-... ~ ... ·· .. , .. ~:.. ~ ·. -~ . -· :• .-. ."· :,·."',. . . -··---·-··~-. -.· ,•-.. · .. ~ --· ··-.... -.. _.;·· ·,·:·. ..... --..... .. ~ .... · . ---.. -. ~ . . . .. ···-··~-"'··· .. ~ .... ·-·--........... -·-· ... ~----~ ........ _,. ·-·~-··----·~-~ --.... . . f ....... . ; --., .. :.~_~·":..,.-:; -- . ;·.~.--~.;-;.;:-.;. .· ........ ,._ .. ::.:. .... :·,:.:..:. .. ··-·, ,·,-... ~-~·t·..-~-.. ·~······ ·'"---........... ·-::-----.... , .. · .. ---·--··---· .... ~ ·. :_.·_·::._,. ·:. --~·--~-'-··. -. ·--0·~1··---· .. . . . -'"... .. • ... . .. . . ::· ..... ·.::::·~-~_;:.._·_·:.:·.:~--~=--:. .. ·.:--~::------~-·.--·-. ·rn·-...... .,... ... ·-~"'·,·· . ' ---·------. ~ .. ~ ............. ,....._ 1 .. ~.. . ~ --~· ... · .~~ •.--........ ~-·-... - ·:_··::·:..~: .. "_-.,.,,. ~-.. -:_-·_·~--~:-:-.-:.::·:·.~-:~-:.·:~::~~· .... :;:;; ... :~--w:.. .. -:_~-,:-~-·:.=:; 7""::~·_;:;~~. .;::. -~ •. ,s.·-· ~· _ ... _..__ .. ~ • ~ -~. ) I I I .... ·: ·.--· .. .· _ ... ·~.:.. -.. .--.--.. -- ~ ~---' .... _,. · :-~~~"~,:: ·i :._: ~ :-/!:Et:·.: ~'lt?f\_:~~~, · Dear Mr~· ·stricJ{la..-rid.:::;_'·~_:=/~: 0 · . --·_._ ... ----. -.. -...... ·. _.·.;·::~·-··.--.. _·:--:-~-:~-· .. :' . .:.~.·-·:·_·· .... ·. :-...... : .;-_ • .:.-._: .... --· •• , .;......-: ~ - - - • ----"r ...... - • - On may l.2;, .1977;···Mi< ~J ,.-::_ W ~ -Moore·~-Jr., of your Department·~-inspected a piece of property -up.on· which we pl2.11 to place fly ash.-from ·low sulfur coal-fired :boilers·. The tract of l2I1d is on N. C. Route··. #J.5~0 in Transyl va..TJ.ia Cou..'1-:y 2nd is owned by Knob Creek Properties, I!lc.. -·._:._.::._. -.·; - I -=.;..·-::. The enclosed description of the site a.."ld the operation plan (three- -------------copies--,enc·losed) was prepared 2.t Mr. Il'ioore 1 s dire ct ion. · Mr. Moore indicated that· it· is needed to fulfull the intent· of-Section. IX· I I I I. I I I I "?.EQUIP.ED Il~FO?YLATION FO?. P.??ROVAL O? SPJ~IT.L_RY LANDFILL SITES .Al~D OPERATING ?LP.NS11 · as co::1tained in the "Rules a..-rid Regulations :~,-~~- _?_r~viding Standards for Solid Waste Disposal."· ··~ .. :'_·.- The material to be placed on this property is :inert and is ·to ~De used solely for-the filling of a low area that is-now useless to· the owner of the property. The area to be filled is aPDroximatelv ~. --..... 2· acres in size.. Vpo::1 co:wpletion of the fill 'ing process, Y .. nob Creek Propert1es:, IP:c._ ~ill cover-the fly ash with soil~ It is trusted that the enclosed inform2.tion is adequare·for yotl!" needs:, if you have ~Y questions:, plea.se feel f'ree to give me_:a: call. · Yo~rs very Truly~ . [1/l ~21;;;,CL-J 7 . . -.. -~p? ~ ~ - . cJ e ... .J. ... or ... ma.:"1 ~ \ -r:res ~ ·-. ·· . ... ·.,: __ Knob Creek.·?roperties, Inc. . ~: ·-~. -" . ...,,.--":'-· 1· I I I I ' ' I I I ,. ,. I ,. I. I I f ' PROPOSED OPERATION KNOB CREEK PROPERTIES, INC. TRANSYLVM""IJI.' COUNTY I N. c. KNOB CREEK PROPERTIES, INC. BRl::..-VARD I N. c . JUl\iE 17 I 1977 Prepared for Knob Creek Properties, I by R. J. Gussman I I I DESCRIPTION The Knob Creek Properties, Inc. owns a tract of land situated on NC Route 1540 in Transylvania County, North Carolina. This site f contains a low area that is currently useless to the owner. We, therefore, ~ish to fill this low area in order that the land area I will be available for some useful purpose. It is estimated that I this site contains approximately 20,000 cubic yards of available volume. It is proposed that this low area be filled with fly ash I from the operation of coal fired power b:::>ilers. A small dike will I be constructed on the North and West sices of the filled area to prevent the washing of fill material from the site. The contractor f who will be responsible for hauling the fly ash to the fill site is Mr. _J. W. Crary. I The site was inspected by Messrs. J. w. Moore, Jr. and J. Bloom I of the North Carolina Department of H".l.:uan Resources on May 12, 1977. A copy of Mr. Moore's inspection sheet is appended hereto as attach- I ment I. I Attachment II is a copy of a portion of u.s.G.S. map of the Brevard·quadrangle, 3507.5 -W8237.5/7.5. This map shows the location ,. of the proposed site and its relationship to the French Broad River 2.na NC Route 1540 (Wilson Road). Atta2ruuent III is a copy cf a portion of TVA 's June 1973 Edition ''Floods on French .Broad River in North Carolina" showing the approximate location of the proposed fill site ·relative to the French Broad Floodway Boundary and NC Route 1540. Attachment IV shows a sketch of the approximate cross-section of the site showing the maximum fill depth and the location of the dikes. l 1· I 'I .i I l ,' I I I I I I I I ,. I I ,. 1. I I I I -2- Attachment V is a/?tetter from the Flooa Plai.\.\'~ Management Services of the Tennessee Valley Authority with their comments as to the potential flood hazard associated in using this parcel of land as a fly ash disposal site. A number of soil borings were.made at this site. This level of the surface water was between one and three feet below the surface depending where on the property the borings were made. OPERJl.TING PLAN Prior to the placement of fly ash at the disposal site, an ·earthen dike will be erected upon the North and West sides of the fly ash fill area. The dike on the North side of the site will he back approximately 50 feet from the center line of the drainage ditch running through the Northern part of the property. No fly ash will be allowed to be placed within ·100 feet of the well that is located in the Southwestern corner of this property. The fly ash will be placed so that the final grade will he a minimum of one foot above the 100-year flood level of 2112.8'. The fill operation will then progress from near the diked area across the property toward the Southwest property line. This site is to receive fly ash only, the quantity will range from 55 to 60 tons per day on a dry basis. This fly ash is wetted prior to leaving t..~e plant site, however, and when placed in the fill does not create dust. It is envisioned that the filling O?eration will be done ::rorn dump trucks upon undisturbed soil. No errosion is anticipated. The Bryant Construction Company does own earth moving equipment which can be used on this site when leveling operations become necessary. ,. -3- I The anticipated lifetime of the·project is approximately six months. Inspection of the site shows that the area is dry I except for a low area near the North side of the property. This area will be within the· fifty foot set back from the north drainage I ditch. I SU.MY.LARY I In summary, the proposed operation consists of the filling I of a piece of property near the French Broad River. Fly ash is planned to be used as the fill material. The area will be diked I on two sides to prevent any migration of fly ash ouring the initial filling operation-. The project's life is expectea to be approxi- I mately six months. Upon cowpletion, the fill is to be covered I with soil and seeded. ,. I ' J: . f. ,·. r r P. ~b '.-;·;-,\':':'-' C. DEPARTMENT OF HUMAN RESO:.J/:-:'.:::-:S ... ,. DIVISION OF HEALTH SERVICES ·-:::i/=· ' CHECK-OFF SHEET FOR PROPOSED SANITARY UJ-lDFILL SITES . rJill.T( ~6f#!Mt/tL LOCATION (J,J;_Lsc M ,-s&#16 ~s d..~ loPtR:TY OWNER :&4 f!rt_v, (t:v,..j-: PROPOSED OPERATOR c~~ -e D ,. ,. ) . ,. ' ., . J. I • I , . I . 1 • I I . 2. f ~ 5. Is this site within the boundaries of a public water supply ~atershed? Watershed -------------~------~~--~~- Does any portion of this site contain floodplain areas? YES YES Are there public or privatet7ells nearby that could be affected? YES Nearest ;.,ell in feet /rJ:o (Elaborate in Con:::ients Section) ) Are there springs present on the site? Number---------- Will this site require dyking? Will this site require piping of surface drainage? YES YES YES NO t---NO '[.-,,' NO NO v--NO ---- NO -~ NO Not precluding required boring infonnation, does this site have adequate cover material .for ·t:h_e sanit2ry landfill development? YES -Will this site require diversion of surf ace .:ate1if(' 1 /iJ...) AES ----- Receiving stream for surface drainage from site ,0;::,""''{/fc .rtJL,.. !!?(, ---- NO~ Will this site require extensive preparation, such as clearing? YES (Elaborate in Corrrnents Section) Will this site reguire a new all-weather access road? (Elaborate in Comments Section) YES Evaluate the following: POOR A. Surface soil conditions as related to cover require~ents E. Location as related to population density C. Accessibility to users NO~ NO L--- GOOD EXCELLE? ~ B.sed on the observations made above and othen.•ise, do you recommend that the requester p ro ceed ~~th the requirements of Section IX of the Division of Health Services "?J.l les and Regulations Providing Standards.for Solid i-.'c.ste Disposal"? ~ r YES NO ----- of boriDgs recor:::iencied~r a re?resentative sa;·qling of the site __ .=;.... _____ _ Pircent of usable land ';;!'dzt). si:e on back of this f onn •. c;i1;/77 ~~1'J---+_ ~~~- \.las te 3BH F"011i 1350 (1/72) ,foli d !aste & Vector Control Branch ianiLary Engineering Section G> I I ~-;)i/, c. DEPARTMENT OF HUMAN P.Esou-.::::::::::::S ····· DIVISION OF HEALTH SERVICES '::,:,:,:,· CHECK-OFF SHEET FOR PROPOSED SANITARY l.J..NDFILL SITES 'O~Ti ~~/tL LOCATION. 11,)lL20 .if_ , -s!il~ ;b ~s ;;;>£: loPERTY OIINER :&A: 13Y!) 6,,,-t: PROPOSED OPERATOR r~-:=::, -c:_ ,. ,. ) . ,. ., . Is this site within the boundaries of a public water supply watershed? Watershed~~~~~~~~~~~~~~~~-YES --- Does any portion of this site contain floodplain areas? YES f.-.,-- Are there public or private13ells nearby that could be affected? YES ~ Nearest well in feet /rJo ~~ (Elaborate in Co~erits Section) J YES ---Are there springs present on the site? Number ~~~~~ NO NO NO NO Will this site require dyking? YES I ~NO v --- --- ~ --- YES --- NOL/ f. Will this site require piping of surface drainage? I • I -· , . I .. ,~ I . ..., ~- ( f· r. [/. .... ~ 5. r fi J Not precluding required boring information, does this site have adequat~ cover material for ·th_e sanitary landfill development? YES Vill this site require diversion of surface "ate,(" 1 fA._ f),Es Receiving stream for surf ace drainage from site /J.:.""'-{/fr . ,. I\ Will this site require extensive preparation, such as clearing? YES (Elaborate in Com:nents Section) Will this site reguire a new all-weather access road? (Elaborate in Comments Section) Evaluate the following: A. Surface soil conditions as related to cover requirements B. Location as related to population density C. Accessibility to users YES POOR -~ NO --- NO~ NO~ NO L--- GOOD :SXCELLEr --z::...., ;;:; Based on the observations made above and otherwise, do vou recommend that the reouestor proceed ~~th the requirements of Section IX of the Divi~ion of Health Services · "Rules ·and Regulations Providing Standards.for Solid i-.'cste Disposal"? ,_____.-, .. YES NO of borings recor::::iended~r a re?resentative sa~?ling of the site~~~-~~~~~~­ Percent of usable land .<f"dzt::J. Include sketch~ si:e on o;iif ;~-;1; Wasce 5BH FOR~ 1350 (l/72) folid Waste & Vector Control Branch fanitary Engineering Section G> u TENNESS! I I I ' I I \ \ 209:J 3 \ , - ' I ' ' I ' ' ' ' ,. ,. I I ' ' I ' I -:--·----c;r-------~· --7""'~ r ~..,c...,t:.i..;T J_I'J.:;-'_[_~_.;i_c:_J,,) ___ .!:_!,,.-_l_ __ tt_~'_tj______ SHEE:T NO. ________ CF' __ . CHKD_. ey ______ DATE------t\((:":": _f_Li...L=-_kufl..lo ____ c_c.J..Li':.-{,:;:Jl.f/:.r..l.Lr ~ JOB No _____________ _ · "'":: I.B..EJ '" c-v I V.' L1N r n · c .:.·.··'" ;...1 C --------------------------..L'l....u..L.J._ ..r.:L _L £ .J ___ -....o:..':i':.-_J.~-.__ • ------------------- EROSION CONTROL D 1 Kc l""!"'\..1~-. .a --I I ....:..., ,-'""'""" ....__,.. w ELL I ~....__· ---'----/ FLooDw.Ay BovN 'O;,Ry CaVER ~£cT10N A-A' No scAL£ ltTT/i CH ME.NT .. l- f TENNESSEE VALLEY AUTHORITY KNOXVILLE, TENNESSEE 37902 . ' YJI'. R. J. Gussman, Director Env:Lromnental Control and Industrial ?.ygiene Olin Corporation Post Office 3ox 20~ ?isgcil Forest, North Ce:oli.na 28766 Dear Mr. Gussman: ·~.11··--: -~ tl. f ( := ' \ 1 t: l) JU ti~ V'J/? ~~,...,_~ Tb.is is in response to yo-.xr letter of May 16 concerning the flood hazard associated w·i:tb. ~ • ..-o pu-cel.s of :property located along the :F'rench Broad. 2.!:ld Dav'ic..so:1 ?.ivers ne2.!' 3:::-evu-d, No:-th Ca:roline.e local authorities bave juxistiction over flood :plain zoning and other land use tatters in t:ie 3:revard. e:rea. May I suggest that you contact the a;?ropriate plpnn~ng cCEU.ssion for a determination of uses to which these :pa:-cel.s of · land. may be :put. If we can be of :further-service, please feel free to call on us. Sincerel~ ~ :F • F.:5..ng . 0 Me.:12.geme.::rt Services Enclosure An Eoual Opportunity Employer '. j FRO EHL IN<, & ROBE RT SON, INC. INSPl:'.CTION ENGINEERS • CHEMISTS • BACTERIOLOGISTS CAILl ADOUSS-"FROlHllNG" ieson, Hintz & Associates, Inc. 2, BOX 286 :cher, North Carolina 28732 ~ntion: Mr. Abernathy Asheville, N .c. M~y 13, 1977 ject: Fly-Ash Containment, Olin Corporation Pisgah Forest, N.C. 1tlemen: ,. 0. IOI 171~•. II•""'"(.••• .. l1CMlll0J.tD, VllC.IHIA JlUI hlOtoll tU.JOlS l~AHCH LAIO~ATO~IES JIOlfOu:, CMAI\Ottl, 1.AlllG"'I WAIMlHOTON, IA\11¥011 eltlNVllLI. IOANO(I, ,A.Ylfl(Vll\l A.IMIVI\\.I The field and laboratory test results performed on the fly- J materials by Freehling & Robertson, Inc. have been forwarded me for evaluation. The objective, as explained to me, is to termine a safe slope angle for the waste deposit which will be led and contained in a natural ravine. According to the laboratory reports enclosed herewith, in- suding an undrained triaxial shear test on a nominally compacted 1mple, the internal friction, or 11 0' angle" is 8' with cohesive, ,: "c-strength 11 of 2. 5 PSI. The angle of repose on the dust-dry 1terial was measured at 45", similiar to fine dry uniform sand. Accordingly, I recommend establishing a maximum slope of bout 22· from horizontal. This is approximately an incline of 2- :orizontal to 1-Vertical. This comes out to about one-half the ngle of repose, which is a good rule-of-thumb for low-cohesive, ~ine-grained materials. It should be noted that the low 0'-angle of the compacted :naterial indicates that the mat~rial could flow easily if super- saturated. Also that the high percentage of sub-sieve size ~rticles can result in substantial erosion from the elements, es- pecially if very dry. The cohesion between particles depends upon constant moisture. ' If I can be of further assistance, you can notify me through our Asheville off ice. \ Respectfully submitted, FROEHLING & ROBE~TSON, INC. f!lr~d'i:'J. -::la1!:r7;z.f Engineering Consultant I MHW :cs . · JIU: ""'•ilc •~ S.-cl•ty '•' h1•l11t M•••,l•h • -'"'••lcu Cu,,11, l111ll!vt, • ""'"ltu Covl\tll ,I litdtOt"d"'I l..•'D••etulu • Vl,11•4' Au4,,.., -' hlHU • Ylrtl•I• IN4 f,1114u1 .A11e•d,1\N • hwt,1•• ..,,,,,1,,1,11 ,1 \(it"<• I h1d,ulty • \~ltty IM N..-.dullvc:11•1 tu11111 • Vl,91,.lt \1,1, C}t.t,nbe, ti c,,....,.,c, · 111it10 IM .,. ... ,,i<t• w,,d p,,u••••• Au,c.1,,1.,. • .4.11,,11,1, • .,t Aip1".111 •••'• Tu,.•e•otilti • .1,,...,1ua w,,,, Wtrh A.11.-<ht!,• • ... ,...,re.,• C,.,,...lc.al \0<1,"1' • ...... ,,lta• P.'io•lc. 1-411••'-.t.11ed111o" • ,e<..,1ttl .l11ot:.,:, .. , ..... '•••• ,,., .. .,, • Vlttl•I• P,~llc Httll1' ... uMl•tl-• Ylrtf..,1, w,1,, '"'"'I'" C,1111,1 Auoc.ltllt• • ""''''''" 'Wt141"t IMltty • A.,..,,1,," \oc.111, el Chit 1111111,1•1 • \..c;l1t1 e.4 .l-,,•,-1• : 1.111,, ........... . OLIN CORPORATION LAND FILL (FLY ASH) -PISGAH FOREST, N.C. LABORATORY DATA Results of Gradation and Hydrometer Analysis Grain Size Distribution % Gravel (+ #10 Sieve) 1.6 Coarse Sand (#10-#40 Sieve) 0.3 Fine Sand (040-#200 Sieve) 11.1 Silt (#200 Sieve-0.005mm) 82.0 Clay (-0.005mm) 5.0 Sample Remolded at 65 PCF± (Dry Density)@ 25-30% Moisture Results of Unconsolidated Undrained Triaxial Shear Test Angle of Internal Friction Apparent Cohesion Angle of Repose (0) = 8° 2.SPSI Material was screened through lllO sieve to break up bulk and dropped through a large funnel. The material "piled up" at an angle of 40° to 50° with the horizontal. Angle of repose -45°± '. ' FRO EHL ING &· ROBE RT SON, INC. I 1t ..... Q,•,n, p ' -,.MOM( ... 10J t J INSPECTION ENG l N EERS • CHEMISTS • BA CTER I OLO GISTS CA.Ill ADDtESS-",ROEHLING" l~"NCH LAIORATO~tB NOU0\11:, C"4Af\Of1' 14.\(·<i• WAJ/'fl.tfG10'1 I At r t,.{'I• •111Nv1,u. lOAHO«.I, •AYPfl\'qlJ 14113 Asheville, N.C. May 9, 1977 :PORT OF INPLACE DENSITY TESTS (FLY ASH) -1de For: The Olin Corporation c/o Matheson, Hintz & Associates, Inc. _,roj ect: Date Tested: Results: Test Number 1 2 3 4 5 TB:cs Rt • 2 -Box 2 8 6 Fletcher, N.C. 28732 Olin Corporation Land Fill (Fly Ash) Pisgah Forest, N.C. April 13, 1977 Drillers: Rhymer & Oliveira Location Percent Dry Moisture Density From Truck Bed 14.2% 3106 PCP On Surface 31.8% 37.4 PCP 5' Depth. 28.3% 53.7 PCF 10' Depth 23.1% 55.2 PCF 15 I Depth 20.6% 56.5 PCF Respectfully submitted, FROEHLING & ROBERTSON, INC. By ::::1-v=_,f", & '!};g._y Tommie Bridges l CC: F & R -Richmond Mr. Madison H. Woodward, PE-Greenville "'"'"''"· .,..tMt(l; .,._,..,liu• l+<hty f•' Tu'l"t M,1,,t,1• • .\J11tt•lo" c .... ,,,,, ,,.,,Jtv•• • ,.,..,,iu" Cov.11<11 ef t11d•••"du.1 l41MH1l•1ltt • V111l•I• Ae,,1,,,., .I Jtl~• • .,..,,~ lw• 1.,11,.,1 An•c.••fl~ • h.11,,,. .A,uc.1,,, ..... h,111,, A l•d..,,...., I lskh'r fw ....... , .. 11..,,11..-, h,11119 I ¥1,,111,, l'•'• ,,.,,,."'' ., c,fl'l,..tr(t tl,.t&JfW1J0 tN ..... ,,:,,., W,e..f '''""•••1 Au,,;,11,• • A1H-c.f1tl" el A,s,.,,lt l'1•l•t ru"-••'•tlitt I ..... ,,ic.111 w,,,, Wo»h Auec.l,11-• A-,•lt111 C11,,-.:cal iwl1"r • A, ... _,1,,a ,.,M:, .-C11'lti Au«ni1• 111 t T11t••<f , . .,.,.,t1 ... 1 '• I 11#,..,., 1 .. ..,,., .• • "''•'"'• '•'-''' M•1HI Au••'•''""'" I 't'h1,11l1 W11,, ,.,,,.u-C1"h•f Au-.ct,111111 • A~t•lttll W11,1•t iHl11r • 4,..,,/c.t-• \..c•t•1 .,J ~-1 '•t••t.t-•t 'I \1cl1•1 al A-1#•<1• 113 For:· Olin LJrporation ·c/o Matheson, Hintz & Associates, Inc •. Fletcher, N. c. ~ct: Fly-Ash Containment, Olin Corporation Pisgah Forest, N.C. 0 0 0 0 ~ n size Analysis (Hydrometrical) of Ply-~sh · >c1rse particles (Clinker, + No. 10 Std. Sieve) :dium particles (passing No.10, Retained No. 40) i.ne Particles (Passing No. 40, Retained _No. 200) 1b-Sieve Sized particles (-0.0Smm to O.OOSmm) .1b-Sieve (Airfloat} particles (Smaller than .005mm) onsolidated Undrained Triaxial Shear e: Remolded sample Dry Density: 65.0 PCF Moisture: 25% -30% ~gle Internal Friction 1: 1pparent Cohesion (c) : Jle of Repose: 45" g• 2.5 PSI 1.6% 0.3% 11.1% 82.0% 5.0% Jote: Dry material passing No. 10 std. Sieve passed through Std. cone, (as in sand test) • • ....... -Place Density Tests 'est Location mber 1 From Truck Bed 2 On Surface 3 5' Depth 4 10' Depth 5 15' Depth (Ply-.Ash) Percent . . Moisture 14.2% 31.8% · 28.3% 23.1% 20.6% _Dry .. Dens_itz _ 31. 6 37.4 53.7 55.2 56.5 ' ., PCP PCP PCP PCF PCF 1171 FRO EHL IN<, & ROBE RT SON, INC. IN SPECTIOH ENGINEERS • CHEMISTS • BAC TE RI OLOG IS TS C:AILI ADDIIH-"rROEHLING" I 8 8 I Matheson, Hintz & Associates,Inc. Rt. 2, Box 286 Fletcher, North Carolina 28732 Attention: Mr. Abernathy Asheville, N.C. M~y 13, 1977 Subject: Fly-Ash Containment, Olin Corporation Pisgah Forest, N.C. Gentlemen: MAIN OFFICE ANO LAIORATORIIS ,. o. to• 111:,, 11• wor CA1t, '""' ll(NM01ri10, yilC,INIA JJUI 'MON( tU·JOU l~ANCH LAIORATOR1ES NOUOU, CNA.UOTfl, IAlt•(l't WAIM11ri1Gf0"'1, IAl1tMOltl e111NYllLI, IOA-.oU. IAYITffYllLI AJNIVltLI The field and laboratory test results performed on the fly- ash materials by Freehling & Robertson, Inc. have been forwarded to me for evaluation. The objective, as explained to me, is to determine a safe slope angle for the waste deposit which will be piled and contained in a natural ravine. According to the laboratory reports enclosed herewith, in- cluding an undrained triaxial shear test on a nominally compacted sample, the internal friction, or 11 0' angle" is s· with cohesive, or "c-strength '' of 2. 5 PSI. The angle of repose on the dust-dry material was measured at 45", similiar to fine dry uniform sand. Accordingly, I recommend establishing a maximum slope of about 22· from horizontal. This ·is approximately an incline of 2- Hor izonta 1 to 1-Vert ica 1. Th is comes out to about one-·ha lf the angle of repose, which is a good rule-of-thumb for low-cohesive, fine-grained materials. It should be noted that the low 0'-angle of the compacted material indicates that the mat~rial could flow easily if super- saturated. Also that the high percentage of sub-sieve size particles can result in substantial erosion from the elements, es- pecially if very dry. The cohesion between particles depends upon constant moisture. If I can be of further assistance, you can notify me through our Asheville off ice. 8ri MHW:cs Respectfully submitted, FROEHLING & ROBE~TSON, INC. fflll~~ JI cftr~~~ Matlison H. Woodward, P.E./ Engineering Consultant M(Ulll; A"'11lct" S-<1,ty '•' f11tl11t M•f•,l•lt • A,.,,,,10111 C•11c•el1 l1111t/tvl1 • Am11lc111 Co1mcll el l11d•in,.duf l.lbe•1luf11 • Yl,slal. Au4•""f t4 hl111u • Yl11l•l1 IN4 l11ll,1illt1 A1Hcl11f ... • s.,..,-,.,,, ~1Hcl1ll111 el Jcle11u & '"''"'''f • $t<lt'l 1,, N~d111n,Uh1 f11ll111 I Vl,gl,,d, lt1l1 C~t""b" tf C,,.,.,.,,ct 11'1111MT~~1~~111:,.-;::~·", r,•:! ~:~•::,::'•, ·~::;:::!~,:n~·~:c111~~·;,::,::r::·~ ':;,';,,.i!'~:~;~·;;::,,7,.;'·c:•~:,•,~ :.:~:·,,~,1~)11 A~::~:i'~:: ~.:.w;:;:c;;.~:;"'~U!~::.it,.;. ;,c~:::,1:,••C~•~t.c..;!::•.~ ~11;c:;~:,•; ~·.!::,•::! ... , .. ,,., ... ,, ......