MISSOURI RIVER ELEVATION - DNR470.70 467.59 467.02 462.78 467.67 prepared for 1055 corporate square...

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SURVEY MONUMENTS

MONUMENT ID

AUELBE-001

AUELBE-002

AUELBE-003

AUELBE-004

AUELBE-005

AUELBE-006

NORTHING

990484.82

996166.50

989921.39

994487.78

991746.97

996728.98

EASTING

726569.81

727588.30

728508.32

729353.29

731438.29

731621.69

ELEVATION

Missouri State Plane Coordinate System Datum:

Horizontal Datum NAD 1983;

Vertical Datum NAVD 1988

467.19

470.70

467.59

467.02

462.78

467.67

PREPARED FOR

1055 CORPORATE SQUARE DRIVE

ST. LOUIS, MISSOURI 63132

314.993.4132 (voice) 314.993.4177 (fax)

001004 02010

LABADIE PLANT

W.J.A. (GER)

THE GEOLOGIST WHO REVIEWED AND APPROVED THIS REPORTASSUMES RESPONSIBILITY ONLY FOR GEOLOGIC INTERPRETATIONS OFDATA APPEARING ON THE PAGE AND DISCLAIMS PURSUANT TOSECTION 256.456 RSMO ANY RESPONSIBILITY FOR ALL OTHER PLANS,SPECIFICATIONS, ESTIMATES, REPORTS OR OTHER DOCUMENTS ORINSTRUMENTS NOT PREPARED UNDER THE SUPERVISION OF THEGEOLOGIST RELATING TO OR INTENDED TO BE USED FOR ANY PART ORPARTS OF THE PROJECT TO WHICH THIS FIGURE REFERS.

0

SCALE: 1" =

600150 300

300'

N

FIGS (18) THRU (29)(33).DWG

M.C.C. (GER)

M.C.C. (GER)

M.C.C. (GER)

NOTES:

1. MAP DEVELOPED BASED ON CONTOURS GENERATED BY SURFER® SOFTWARE.

2. GROUNDWATER DATA NOT AVAILABLE FOR TEMPORARY AND CPT BORINGS.

3. MEASUREMENTS RECORDED BY GREDELL ENGINEERING RESOURCES

AND RIETZ AND JENS FIELD PERSONNEL.

4. MAP REPRESENTATIVE OF GROUNDWATER CONDITIONS OCCURRING ON DATE OF

MEASUREMENT.

5. USE OF SMALL CONTOUR INTERVAL (0.5 FT.) EXAGGERATES APPARENT "SLOPE" OF

WATER TABLE SURFACE.

6. RANGE OF GROUNDWATER FLOW GRADIENT AS DETERMINED BY SURFER®

SOFTWARE 0.00000395 FT./FT. TO 0.001044 FT./FT.

7. MISSOURI RIVER GAUGE ELEVATION = 458.5 FT. ON DATE OF WATER LEVEL

MONITORING AS MEASURED AT LABADIE POWER PLANT. THIS REPRESENTS

AN APPROXIMATE 3.1 FT. DECREASE IN RIVER ELEVATION BEGINNING ON

SEPTEMBER 4, 2010.

2007 PIEZOMETER

2" PIEZOMETER

4" PIEZOMETER

LEGEND

SURVEY MONUMENT

460.00GROUNDWATER CONTOUR

NOTE: CONTOUR INTERVAL

(C.I.) = 0.5 FT. (DASHED WHERE INFERRED)

GROUNDWATER FLOW DIRECTION

PROPOSED UTILITY WASTE DISPOSAL

AREA FOOTPRINT

459.23 GROUNDWATER ELEVATION (FT.)

4

6

5

EXISTING GROUND CONTOURS (C.I. = 1 FT.)

FIGURE 27

DETAILED SITE INVESTIGATION

PROPOSED UTILITY WASTE DISPOSAL AREA

WATER TABLE SURFACE MAP - SEPTEMBER 8, 2010

MISSOURI RIVER ELEVATION:

September 8, 2010

458.5 ft Ameren Missouri - Labadie Power Plant Gauging Station

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