2010-04-16_REPORT - C1982056 (3)

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TABLE 31 TWENTYMILE COAL COMPANY PERIOD OF RECORD WATER QUALITY DATA SITE: AVF15 (WELL AVM-15, FISH CREEK ALLUVIUM) DATUM = 6628.4 .. .. ........ CATEGORY PARAMETER ... ............... . .... ANALYSIS TYPE UNITS :.. ..:.... OCT OV EB AY UG CT AR UN ..... 'FIELD PARAMETERS DATE ..................................... ...:...................... . . :.. ""' 10 /13/02 ..... 11/12/02 /6/03 /12/03 s /9/03 0/16/03 /31/04 /16/04 ;WATER ELEVATION .:::.:. ..._...:.: . . ......... FT ABOVEMSL ... > 6621.2< 6621.18 .. 6622.35 ..... 6623.62e 6 6621.6: 6623.58: 6623.42 ATER LEVEL 7.24 - ----- - - 7.22' .x..... 6.05€ 4.7 8 6.9 6.8 4.82` 4.98 ;PHYSICAL PROPERTIES TEMPERATURE .... ........................ .... FIELD .................... .-- .DEGREES C 11.7 9 4 4.6` 6 5.. ' 13.0 11.9 6.3 8.9 ;CONDUCTIVITY :FIELD ....................................... UMHOS/CM ............................. 700; 520' 590' 573; 655; 726 624% 583' ;LAB VMHOS/CM 370- 620; 800 < PH :FIELD PH 8.13 8.65% 8.32% 7.74: ---- .: -------- .... 7.86; :::.......:::::. .. .: 7.53' ::.::.: .........:.:'::. 7.84; .:..:...:..:.:.::::.:' 7.70; .......................... -AB ........ ................... ..... PH ...... 844. 8.36 7.68 SOLIDS ......................................................;.............................................. : TOTALDISS .:.............----. ........ . MG/L : 300< 380;.. .... 520 .................. .................. C ATIONS ?CALCIUM ::: .................... :DISSOLVED .... --........ .................... <MG/L 43 ..... .............58... .................. ... 200::.. ....... MAGNES IIJM ;DISSOLVED - MG/L : :.::.............._..,... ......_......28.... .._.._. 38< .... 77;. ..... ..... SODIUM ... .............................................. DISSOLVED ............................... MG/L ........ --..... 37 43 51 :ANIONS ;BICARBONATE ............................................... ........ AS HC03 .................. .............. . ........................................ MG/I . : 400.... ?' .......... 340:.. . 80:'. . ............. CARBONATE . .. SAS C03 . ................. MG/L . ........................ .1 > .... ? ................... ........................ ................ < 1 SULFATE _ _ ::. NOT APPLICABLE (MG/L 63 75 150:': PRIMARY CADMIUM - . ----..... DISSOLVED : ...................... UG/L 5 5% : ... ..... . LEAD .... ..................................... DISSOLVED :........................................ ................... ............. ... UG/L . : .:..... <.50 ..... .........<.50;... ................. < 50... .................. :.:::- _ .. ;.............. /L ............................ ...................... < 0.2 ..... ........< 0.2>... ................. < 0.2.. .................. ............. ..... SE LENIUM ...... . DISSOLVED . UG/I ;.......... _: _... ..:._ <2 2; .... <2 .SECONDARY :IRON DISSOLVED ........ ............................ ............... ....... <5 <5 3600 : MANGANESE ::........................................ .. ........... ........... :DISSOLVED ....................... ; .. <UG/L ,.... .................. .. 37,..... ..... 130;.. . 4100` .. .................. ;TRACE METALS ;MOLYBDENUM ........................................... : :DISSOLVED :....:::::......:....::._.:....::::::.... ........................................ UG/L ...:. : ...... ... <.50 ..... ........G.S?s... ....... ........ <..... 50 :NUTRIENTS NITROGEN :AMMIA-FREE _ .......::.::.:..........:::::.... MG/L ..::.::::::::.......::::_.. ...:...............<..... < 0.05; ................... 0.06 NITRATE MG/L 0 03 . < 0.02; < 0.02. ;NITRITE .................. ?MG/L ..... ................. . < 0.02..... ..... < 0.02:... ................. < 0.02'.. ... ........... N03+N02 . ............. . >MG/L ........... ......... ... ........................... .. 0.03 < 0.02> ............ ......... ............. ....... ... ......................... < 0.02; ........ ......... .................. . ........-•--..... PHOSPHATE ORTHO-DISS MG/L- < 0.01; 0.02. < 0.01: NOTE: Well area flooded by subsidence in late 2004. Permanent ponding in area after September 2004. See next d ownstream allivial well (008-AU3) for water quality data. EXCEL: G:\Enviromnental\CDMG - CDRMS\AHR\2008\Ta b1es\New Alluvial Wen 2009.xls