Document 44VXY9OykLoJgX4Qaykg7eYyV

ST00.95246 .!&!1\\';-:T!VIl?- I.'CS-WCS .v.r: (is'iter K - ^ v |*x u ( I1 RcpoilNo. U,?5-T-1360 Date September 2?, 1971 Title: J INCITE TI7E TEST LINE - DEH5FKINATIOI7 OF ASBESTOS FIBER IN WATER KMCARr JM C O N FID E N TIA L. Not tar [fn m l dirtrifrutto* or r*p*btk A teat line loop has been constructed specifically to dctenalne the asbestos fiber s content in vater that has passed through thirty feet of three-inch TRANSITS water pipe. AU vater >.-riterlr.g the 7RAESITE llr.c wan filtered through a 1*0 plate Millipor filter utilizing 0.8 micron (1 micron 1 millionth of a meter) filter paper which : capable of removing all asbestos fibers. After exiting the TRAKSITE line, ten perc* of the flow was filtered through a ten piate Milliporc sampling filter eioo utilizlr "J 0.8 micron filter payer in order to determine asbestos fiber removal fren the pipe. ; The pH and hardness of the recirculating vater were adjusted by a chemical injectirr system and a water softener. A small amount of fresh water entered the system continuously, with on equal amount to the sewer, to prevent dissolved solids build~k up. Flow volume normally was about 150 GPM and flew rate was 6-8 ITS. Tests were run weekly for a aeries of ten weeks minimum. Fiber determinations were by the Basic Chemistry Research Section. \ The following summarises the averages of each series of successful runs: 'v> y ^ Series C DEF 1 to. cf Runs s. Avg, pH < . Avg. Hardness (ppm CBCO3} Avg, Asb. Fiber Content (pg/gal,) 20 7.a 105 l6.8xlO*5 10 7.3 51 12.3x10*5 lU 7.3 Zb 7.8x10*5 10 6.0 25.6 l.ixl0*5 1.0 12.: 3.9: It eheuld be noted that the fibers could only b* detected by use of an electron microscope and thst the rmcvits of fiber are reported os nlcrogrsns per gnllcr (l mterograri 1 mi2.Month of a ersm). As an illustration of the extremely small quantity of fiber in the water., about 6,000,000,000 gallons of water from run "C" would be required to produce one gram of fiber. Based an there trials, the waount of asbectos fiber entering the water system from the Tfl/yJSiTT plpa trst line iras infinitesimally small. It is believed that the fib are securely held in place by the pipe vail matrix, even under aggressive condition; The a/rc/.irit of fiber .'traoved appeared to be independent of pH and hardness and the <?chni3'i cJ` removal was apparently due to physical erosion and not chemical cor rosion. Ti-e aacuit of fiber removed appeared to decrease with time. Calculations Indicate the.t for a lifetime of 50 years, nnd assming two quarts of this type cf water were consumed daily, the rx.cunt of fiber consumed would he about O.COOQ025 sronr. Contents: Surmary, Introduction, Discussion, Conclusions and Reeemaendations, Apnendix, and Tables T - XI. PdReported bVy tf, <). J "A pk B. M, ftuint <> k TOAHSITE Pipe Section JOiSnfv!'RtlYILlE rtSEARCH AND EuCITlEERliiG CENTER INTRODUCTION Report No. M'S-T-13(50 Pape 1 (/) O o cn ro During 1968, a TRAHSITE pipe test line was installed In a building situated adjacent to the Research filtration plant, The purpose of this installation was to determine the amount of asbestos fibers entering a potable water supply after passing through TPAH3ITE water pipe. DISCUSSION JM C O N FID E N TIA L. Not for general <too.'.uffort or rrpmUicmlon. Originally, the system was constructed for 175 GPK to pass through the Install* ation on a ence-through basis. Trial runs revealed that a oncc-through system was not feasible due to almo't immediate plugging of filters. Consequently, the system was converted to r .mi-clor.ed recirculating system with a snail amount of filtered freoh water continuously entering the system, and an equal amount of system water to the aewer. In order to prevent fiir.solved solids buildup. (See Figure 1 of appendix for schematic and equipment list). (Refer also to Research Report Ho, 1+25-1-13^5) The most critical portion of the test involved two Mlllipore filters, one before the TRAiJSITE line and one after the TRAH3ITE line. The TRAHSITK line was 30 feet of Class POO RTPP from Waukegan Plant. The pre-TRAHSITE filter was 1+0 plate Miiliporc containing "0 snoots ('.'93 mm diameter) of 0.8 micron filter paper. Before entering the TFAN3ITE lint, all water passed through this filter. Tlie 0.8 micron size was chosen based on chcm lab tests showing that 0.8 micron filter paper would retain 100 percent of the asbestos. (See Research Report Ho. l+25*Int-1301). After leaving the TRANSITS line, ten percent of the water was sampled by a ten plate Mlllipore filter also containing 0.8 micron filter paper. Hardness of the water was controlled by a water softener and pH was controlled by a chemical injection pump using dilute sulfuric acid. Water volume was about 150 GPM ar.d flew rate was 6^8 FPS. A series consisted of a minimum of ten vcckly runs at a checen pH ard hardness level. At the end of each weekly run, the ten papers fran the sampling Mlllipore were delivered to the chemistry lab for fiber analysis, A ^rosh TRANSITF line was installed r.t the start of each series of runs. Fiber analysis was originally intended to be based on the magnesium content found on the sampling Mlllipore, However, clue to the extremely snail amounts of fiber and because of traces of magnesium from cement in the pipe and magnesium in the water, this approach wns abandoned. The results from the first few runs were, therefore, considered invalid and arc rot reported. Puns "C" through "G" results verc considered to be n3 accurate as ijcssible and are reported as valid runs. (See Tables 1 - ll). Fiber eralysls vas per formed by the chemistry lab using particle and fiber ccuntu of mafpiifica elec tron microscope photographs crxnbined with a radioactive tracer technique. Observation of the data showed that ir all series oi' nui3, the amount of fiber in the water is extremely small, rcr instance, calculating the numbers of gallon.', needed to produce one gram of fiber result', in the following: (?>'-' next pngr). jcrs^rr/iLiE nasCT ra p.:3i:;sr.:;;3 cekter Raport No. U25-T-I3G0 Pa|i 2 Run No. Gallons Required for l.Og Fiber C 5,950,000,000 D 8,130,000,000 E 12,800,000,000 ? 71,1*00,000,000 V) -- 0 0 vo cn ro CO C 11,200,000,000 Regression analysis and variance analysis of the data was performed by D. H. Hamer and S. E. Lawrence. (See Research Report No. U25-T-1357). Their report states that, "lhis anelysis shows that in all cases the rate of removal of fiber decreases with time. Comparison of .'.ata from one test run to another revealed no apparent relationship between the rate of removal and changes in the pH/hardness ccmbinaticr. CONCLUSIONS AND RECCt-MENlIATIONS Based on these test series, it may be concluded that: 1. The rate of removal of asbestos fibers frera the TRANSITS pipe test line by conveyed water was infinitesimally small and required electron microscopy techniques for measurement. 2, The extremely small amount of fiber removed from the 7RANSTTE pipe test line appeared to be independent of the pH and hardness of the water being conveyed. Apparently, the fiber removal mechanism was by physical erosion rather than chemical corrosion. 3* The extremely small amount of fiber removed appears to decreaoe with time, probably because of the formation of a "mat" which holds the it fibers in place even after binder removal. 8 !+. Calculations show that for an 80 year lifetime, the amount of fiber s consumed would be 0.000002!) grams aasming two quarts of this type of water were consigned dally. i:z r >:::r: . ::i csjtei apphtoix Import No. U25-T-I360 3 ST0095249 Fiuro 1. Scheaotle Diagram of Toot Uao InotaUmtion ST00952S0 J M t_U !N H JfciS U A L . .V tf Cf - f r crct l.s:rih u :io n r>ttp vb 'icc: Report No. ^25-7-1360 Pape ' APPENDIX Figure ] (oont*d) - List of Equipment - Tost Line Installation Inlot Water n.ovq^ter - Fischer & Porter No. 10A3535SX * 95 CPM max. Inlet "nt'-r Filter - Pall Trinity Micro Carp, filter housing No. MC31002UX16 utillzir, " two Fleeted popor filter cartridges No. MCY1001UX rated for 100 percent removal cf 0.8 micrcns. Chemical Pinp on Inlet Vfater - Chemeon Pump - Model No. L2U "Raider" Dlatmltc Filter - BI? Model No. 186J-C3 vacuum dlataaite filter, 2h0 square feet, flow'rate !75 Cl5!' at five psig. Operated with loafs removed and no diatcmlte in L system. Pxrffl - Welnmaini Model 2KB (Centrifugal) capacity 175 0PM at 220 feet TEH, 2-inch discharge, 3*inch suction flanged, 20 H? 3500 PPM motor ^50-3-60. Cnno Flxt< r - "Micro-Wynd" cartridge type filter, type CG ho C-U for 175 Gl'M t 1.0 micron filter density, 95 pciC inlet - five pslg pressure drop. Cart ridges ur-eii ere l60 each of JM ?E7P or equivalent. inrrrr K; l ].ipore - Millipore 20 set multi plate filter unit complete in 30 set plate canacity bell housing. 0.8 micron filter papers. Fumple Millipore - Millipore five 6et multi-plate filter unit complete in five c.i't capacity bell housing. 0.8 micron filter papers. r.irnpling flowmeter - Cchutto 4 Koerting Figure No. l8J10 size 6HCF6 type SK V/s.f. fittings,- 17*5 Cl5N at 65 p.sig one-inch connections. farpling Orifice & Recorder - Becbnan node] No. 1520(52, capacity 17,5 GPM with or.o pair V-1/2-inch PVC orifice flanges. p!i Meters - 3ecfcnnn Model No. 900. Water Rcftener - roar3 Roebuck Medici Ho. CP.^.^hjh - capacity 8.5 GPM. fetal Flo-.- Orifice h Display - Foxboro, serial No. UPjlSh, capacity 300 GPM (r.wicl :>o. unknown). Water 'jesting - Hach portable engineers Vit - Model Ho. LR l83l*B. JOHNS-nAKVItlE RESEARCH aud E;;r,t;jEEni;;G center RepoitNo. **25-T-13CO rn* 5 ST009525I JM CO NFIDENTIAL. S o t fo r ce n tra l m ib jtio n o r "p u b lic a tio n .i TA3L i - "c" series r;.* hues - test ui~ daw (see research report no. *o-V-5<S) WATER ::cr TREATED DURIKG THxS SERIES Hours V'eter Flew (gal.) Avg. Avg. Run of Rate Avg. Total To. Test TotnlxlO^ SaispledxlO^ ISSl Hardness* 1 99-0 1031 106.1 174 7.5 120 2 93.5 996 97.5 178 7.3 125 3 96.0 U 95.0 965 9^1 91. ^ 168 7.2 109 89.8 165 6.8 101 5--.y 72.0 737 65.3 169 7.3 105 e /, 95.3 7. 96.0 100H O21 103.3 7*.2 175 7.3 1I4O 6.9 111 95 8 96.0 979 89.9 170 7.0 102 9 96.0 10 95.0 n 96.3 12 75.0 13 96.0 1'* 72.0 1-J 96.0 )6 96.3 91^ 71^ 953 7*5 893 698 8j>0 938 82.1 62.2 89.5 70.0 7^.9 61.2 75.6 8l.K 159 7.2 125 7.3 165 7.1 110 6.8 155 7.0 160 7.3 ms 7.5 163 7.1 103 76 78 95 100 102 113 123 17 72.0 18 96.3 706 892 61.2 163 7.5 7^.1 lU8 7.6 19 97.0 9`',5 90.2 163 7.0 20 96.C 857 82.1 15C avg.* 1 * An t rn OaCOj !*un r^t' s Jr-nuary 6, 196y - July 25, i960 122 219 108 102 evg.105 JDHWS-MAHVIUE RESEARCH AND ENGINEERING CZ!1TER Report No. **25-1-1360 Pgc 6 ST0095252 JM CO NFIDENTIAL. N o i/o r general datribml^n o r rtpmil TABLE 2 - "C" SERIES OP RUNS - FIBER DATA (SEE RESEARCH REPORT NO. 404-56) Run Water Ho. Sampled (cal.ixio' 1 106.1 2 97.5 3 91.4 4 89.8 5 6:. T' 'Pi' 65.3 103-3 8 89.9 9 82.1 10 62.2 11 89.5 32 70.0 13 74.9 14 61.2 15 75.6 16 81.4 17 61.2 lfi 74.1 19 90.2 20 82.1 Aehed Solids (ms) 21.4 41.5 51.0 47.2 118.5 53.6 228.5 130.0 152.5 106.3 47.6 32.0 116.1 38.6 70.3 26.0 83.5 27.2 27.5 17.7 Fiber In Fiber In Ashed Solids () Water Jpg/gal, 0.0337 0.0140 0.135 0.0506 6.8 x 10-5 6.0 x 10*5 75.0 x ID*5 27.0 x ID"5 0.0112 20.0 x 10"5 0.0040 2.1 x 10*5 0.0168 52.0 x 10*5 0.0001 0.14 x 10*5 0.0061 11.0 x 10"5 0.0030 5.1 x 10*5 0.0025 0.0242 1.3 x lO*5 11.0 x 30*5 0.0075 12.0 x 10*5 0.0043 2.7 x lO*5 0.0115 0.0251 0.0061 11.0 x 10*5 8.0 x 10*5 8.4 x 30*5 0.0648 24.0 x lO*5 0.162 49.0 x lO*5 0.0138 3.0 x 10*5_ avg;, 16.8 no'? * 'licroErans/r^l. 0 mlercjron 1 millionth of a era?.) Top Research Report No. r.h04-v" ror nclhryl JQIIIIS-MAHYILIE RESEARCH akd e:;g!Heeri;;g center Report No. 425-T-1360 Page 7 ST0095253 TABLE 2 - "D" SERIES OF RUHC - TEST LIKE DATA (SEE RESEARCH RLFOftT MO. ^0-'i-'j3) TREATED WATER - GOAL: pH-7, HAKEKESS - 50 Run Mo. Hours of Teat Water- Flow ia1.il TotalxlO^ Su;iipledxlo3 Avg. Rate (G?M) Avg. PL- Avg. Total Hardneos* 1 96.0 806 64.8 140 7.4 54 2 96.0 900 73.4 156 7.4 53 3 95.5 4 96.0 958 878 91.0 86.4 168 6.8 153 7.2 50 39 5 96.0 o/* 96.0 943 743 91.4 71.3 164 7.4 130 7.3 44 54 7 96.0 8 96.0 950 842 90.7 84.6 165 7.2 146 7.3 57 55 9 71.0 10 95.5 499 939 49.2 91.4 117 7.4 56 164 7.2 48 avg. 5I * As ppra CaC03 Run dates - January 19, 1970 - March 30, 1970 distribution erm JM CONFIDENTIAL. A>'; JOHHS-MAHYILLE RESEARCH AHO ERGWEEKiUC OERTER Report No. 425*7-1360 *** 8 ST0095254 TABLE 4 - "D" SERIES OF RUNS - FIBER BATA (SEE RESEARCH REPORT NO. 404-63) Run Mo. Water Sampled (fcal. )xlo3 Ashed Solids (mg) Fiber in Water ^ip/gnl. 1 64.8 58.1 9.6 x 10*5 2 73.4 55.0 37.6 x 10*5 3 91.0 34.0 19.2 x 10*5 4 86.4 31.7 12.5 x 10*5 5 91.4 31.4 4.7 x lO*5 6 71.3 26.5 10.3 x 10*5 7 90.7 34.8 6.8 x 10*5 8 84.6 37.4 4.8 x lO*5 9 49.2 37.0 5.8 x 10*5 10 91.4 41.4 11.7 x 10*5 avg. 12.3 x 10^5 * Using radioactive tracer method, D-G oerieo CONFIDENTIAL. H o if t n e r c l dlttrikuUoo or rrpmhli^ JM CONFIDENTIAL. Hoi ^--.erml distribution or rrpvMraiIon. JOHHS-MAfJVILLE RESEARCH AND EHGII1ECRJHG CKJTER Report No. ^2^-T-13<jO Pise 9 TABU: 5 - "E* SERIES OF RUNS - TEST LINE DATA (SEE RESEARCH REPORT NO. U25-Ir.t-13Cl TREATED WATER GOAL pH-7, HARDNESS - 25 Run No. Hours of Tcti Water Flow -(g.kl Totalxlo3 SampledxlO^ Avg. Rate (PPM) Avg. IL_ Avg. Tata Hardneos* 1 96.0 828 77.0 ILL 7.1 25 ST0095255 2 95.5 917 83.9 160 7> 2L 3 96.0 763 72.0 130 7.8 17 L 7M 727 7h.2 163 7.8 26 5 9^.0 853 86.1 151 7.5 26.5 6 96.0 792 82.8 137.5 7.1 2L 7 71.5 8 96.0 708 922 70.8 93.6 165 7.3 160 7.* 26 2L 9 97.0 9L1 96.0 160 7^ 23 10 9^.5 907 93.6 160 7.5 26 11 95.0 905 90.5 159 7.2 2L 12 95.0 13 95.0 lb 96.0 862 855 5^7 88.L 87.7 56.2 M i!;e r -V <` " 2.1-.* -rvt 95 avg. 7.35 avg. 24 As ppa CaC0-> Run Dates - April 6t 1970 - November 6 , 1970 I jo::f!S-Mf;v:i.LE research a::d e:!Gi;;:^i;:g center Report No. U25-T.1360 Pape 10 ST0095256 * , * * . o r rtpmbUctiiicm. TABLE 6 - "E" SERIES OF RUNS - FIBER DATA (SEE RESEARCH REPORT HO. lOl*-75) Run Water Ashed Fiber In Fiber In Ho. Sanpled (gal.)x!03 Solids (ng) Ashed Solids ($) Water ^ig/gal, 1 77.0 2 83.9 3 72.0 b lb.2 5 88.1 58.3 58.9 1*6.8 73.1 37.7 0.0783 0.0120 O.OO65 0.0023 0.0231 59.0 x 10-5 8.0 x 10'5 2.0 x 10"5 2.3 x 10"5 9.9 x 10"5 6 -/ ; : 3*2 0.0051* 2.1 x 10"5 7 70.8- W.6 0.0126 8.1* x 10"5 8 93-6 i*3.o 0.0061 2.7 x ID"5 9 96.0 1*1*.8 0.0003 0.1 x 10"5 10 93.6 39.2 0.0253 11.0 x 10"5 11 90.5 1*2.7 0.0032 1.5 x ID"5 12 88.1* 39.1* 0.0001 0.05 x 10"5 13 87.7 37.1 0.003!* 1.1* x 10"5 lb 56.2 39.0 0.0010 0.7 x 10"5 avg. 7.8 x 10"^ JM CONFIDENTIAL. ST0095257 JOKW-M/WVIILE RESEARCH /USD ERGIBEERJITC CENTER Report No. H25-T-1360 Pape 11 % TABU! 7 - "F* SERIES OF RUNS - TEST USE DATA (SEE RESEARCH REPORT T<0. 425-Int-13( I TREATED WATER CiQAL - pH-6, RARENESS - 25 Hours Water Flow (sal.) Avg. Run of Rate Avg. Avg. Total Wo, Test Totalxl03 Saupledxlo3 (GPM) *L_ Hardness* 1 144.0 1,3U 134.0 152 6.0 26.0 2 95.0 855 85.9 150 6.1 26.5 3 96,0 871 87.1 .151 6.1 28.0 4 96.0 868 87.1 151 5.3 21.5 -ri ~ 87.1 150 6.0 2^.5 8^.7 150 6.0 24.0 T 95.0 6 96.0 827 806 82,0 80.3 145 6.0 l4o 6.3 32.0 31.0 9 96.0 893 92.2 155 5.7 20.0 ID 95.5 876 91.5 152.5 6.0 avg. 6.6 avg 23.0 * As ppm CaCO-j l J Run Dates - November 16, 1970 - March 19, 1971 9 it. I g l /',,:::s-Mr.:ivn.unESEfncH r.r:cE:5:::EEK3BKTER Report No. U25-7-13C0 Page 12 ST0095258 TABLE 8 - "F" SERIES OF RUNS - FIBER DATA (SEE RESEARCH REPORT NO. 4?5-T-1337) Run Water Ashed Fiber In Fiber in Ho. Sampled (gal.)xl03 Solids (da) Ashed Solids ($) Water Jiy/rpL1.) 1 1,3U 2 855 1(2.2 37.0 0.006l 0.011 0.1 x 10"5 4.8 x 10'5 3 871 U 868 33.6 28.7 0.0095 0.0017 3.6 x 10"5 0.5 x 10-5 5 6; 864 28.7 35.* 0.0017 0.0001* 0.5 x 10"5 0.1 x 10*5 7 827 32.8 none detected none detected 8 806 36.9 0.0062 2.8 x 10"5 9 893 10 876 32.1 35.2 0.0005 0.0040 0.1 x 20"^ 1.5 x 10-5 avg. 1.4 X 10"5 JM CONFIDENTIAL. S o l /o r [in tr a l attribution o r rtfu b iiC tta K , jp;;r:s*r'!,.::v.!.EREScr.r.C!! m:d ekg:::ee:h;:g CEiiiEn Report No. *?5-T-12C'Page 13 ST0095259 5 - "C" SERIES CK RTTES . T?r.T l::t data (see liESSAnci? REPORT ::c. i TREATED WATER GCAL - pH-5, TOTAL )!ARD:rr.3S - 0 Hours Water Flow (ml.) Avg. Run of Do. Test TctnlxlO^ SnmplcdxlO^ Rate (era) Avg. __ Avg. Total Hardness* 1 96.0 864 88.9 150 5.1 11.5 2 72.0 648 65.2 150 4.3 12 *3 96.0 u 95.0 8i4 670 83.9 71.7 140 5.1 120 5.0 10 16 5 ' 9S.0 ..r : '85T ` ' - 88.6 150 5.0 13 6 96.0 : 8iu; .. 83.2 140 4.8 12.5 7 96.0 0 96.0 9 96.0 742 662 One 78.1 67.3 Or nj 130 4.8 115 5.1 l4j 5.1> 13 11 ^1 Ln. 10 72.0 605 58.3 140 4.9 32 avg. V. 9 avg. 12 * As ppm CaCO, Run Dates -March ?9> 1971 - June 4, 1971 JM CONFIDENTIAL. ,w- ;c rc l d :srribu!ion c r r t publication. t** ^ 1 ! *!., csmef; Rep ">il No. LiS-v-i'^o Pape l'1 ST0095260 TABLE 10 - "G" SERIES OF HIES - FIBER DATA (3F.E RESEARCH REPORT H2J-T-1357) Run V.'nter Ashed Fiber in Fiber in r:o. Orcmlcd (ral.)x?.o3 Solid:: (mg) Ashed Solids (f.) '/Inter () iir/rnl.) 1 88.9 tO.3 0.020 9.0 x 10"5 2 65.2 83.9 h 71.7 35.6 U6.5 1*0.3 0.0025 0.05** 0.0021 1.3 x 10"? 30.2 x 10"? 1.1 x 10"5 5 .. jw'V*- 0.018 1**.0 x IQ"5 6 83.2 , 39,0. : 0.000f* 0.1 x 10"3 7 78.1 33.',` 0.043 18.h x 10"5 8 67.3 3fc.l 0.015 7.6 x 10"? 9 85.3 1*3.3 0.012 6.2 x 10"5 10 58.3 59.^ 0.0010 1.0 x 10"? avg 8.9 x 10*' TABLE 11 - EXAMUIATIOi: 0? PIPE >T10M TEST SERIES D THROUGH G Method - Sections were cut frera pipe frem test series D through 0. Interiors were prohrd and sernped with e knife blade to determine extent of I.D. softening. Results were: Run Estimated Softening Depth Comments D 1 oil E 1 mil F 1 mil G 3-5 nils Appears normal Appears normal Appears normal I.D. stained brown*, clight softening Due to rust in system jrii;!!s-f'f.!;viL!.EnESL',.rx!! am ENG:;:EEn!;:G ceuter Report No. ^'IS-T-l'Co Page 13 ST009526I 9 - "C" CERIE3 OK EMDD - TEGT Ll'T: DATA (ZT.i. KECZAnOi report TREATED WATER COAL - pH-5, total hard.vfss - 0 Hours Water Flow {ml.) Avg. Run of Rate Avg. Avg. To no. Test Totalxl.O^ C'>xplcdxlo3 (c.pm) L_ Hardr.en 1 96.0 864 88.9 150 5.1 11.5 2 72.0 648 65.2 150 4.3 12 96.0 4 95.0 814 670 83.9 71.7 140 5.1 120 5.0 10 16 5 ';; -95*0^ 6 96.0 ;;^5Tv 8l4 ; 88.6 . 83.2 150 5-0 l4o 4.8 13 12.5 7 96.0 742 78.1 130 4.8 13 8 96.0 9 96.C 662 O^c 67.3 OQrj. j^ 115 5.1 145 5.15 11 J1 L*.* 10 72.0 605 58.3 140 iiti- 32 avg. Mr avg. 12 * Ac ppm CaCO, 1971 c r re^ut!.ccT:>m. JM CONF ID FN f f Al_. w - -