2015-11-16_REVISION - M1983194

• Permit No: M1983194
• IBM Index Class Name: REVISION
• Doc Date: 11/16/2015
• Doc Name: Documents for SO02
• From: Daub & Associates, Inc.
• To: DRMS
• Type & Sequence: SO2
• Email Name: THM
• Email Name: GRM
• Media Type: D
• Archive: No

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Table I. Historical Record of Subsidence Monitoring at Natural Soda N ►O.rt
CP Center CP North CP South CP West CP 6 CP 7 CP 8 CP 10 tot] I IH 12H 1311 14H SSM ISH �.c.
C)
Natural Soda LLC SSM SSM CT Eon SSM SSM SSM SSM SSM SSM CP 9 SSM SSM SSM SSM SSM SSM (6/3/14) (2/13/15) (2113/15) (7!13/15) 2911 SSM P
Old Coolbaugh Initial Survey Date 6/12/05 6/12/05 6/12/05 6/12/05 6/12/05 6/20/05 6/18/05 6/24/05 6/24/05 6/24/05 nd nd nd nd nd nd nd nd
Old Coolbaugh Initial Survey Elevation 6655.42 6635.55 6665.87 6680.31 6665.94 6679.34 6702.92 6688.18 6672.92 6683.93 nd nd nd nd nd nd nd nd
SSM Installation Date N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 5/6/13 5/6/13 6/3/14 2/23/15 2/23/15 223 15
Initial Survey Date 6/12/05 6/12/05 6/12/05 6/12/05 6/12/05 6/20/05 6/18/05 6/24/05 6/24/05 6/24/05 10/1/09 10/1/09 6/3/13 6/3/13 7/5/14 4/12/Is 4/12/15 4'12/1S
Initial Survey Elevation 6655.42 6635.55 6665.87 6680.31 6665.94 6679.34 6702.92 6688.18 6672.92 6683.93 6713.16 6705.99 6695.56 6684.47 6675.20 6694.41 6702.35 6713.1/3
1 Elevation(2011 survey data minus 3.57 3.66 3.65 3.53 3.83 3.54 3 60 3.47 Not Found 3.48 -0.20 -01 0 nd nd nd nd nd nd
initial survey data)
i.
-"ELEVATIONS(ft.AMSL)
Survey Date CP Center CP North CP South CP West CP 6 CP 7 CPS CP 10 10H 11H 12H 13H
CP East SSM SSM MEM,- `,.SBM SSM SSM CP9-84M 14 SSM ISH SSM 16 SSM 1711 SSM 1811 SSM
- .SSII(t:. SSM SSM SSM SSM
1/1/90 6655.42 6635.55 6665.87 61,0031 6665.94
1/1/91 6655.42 6635.55 6665.86 6680.30 6665.94
CQ 1/1/92 6655.43 6635.55 6665.86 6680.31 6665.92
t21/1/93 6655.44 6635.56 6665.85 6680.34 6665.95
.+. 1/1/94 6655.47 6635.55 6665.89 6680.38 6666.01
•-t• 1/1/95 6655.44 6635.55 6665.91 6680.37 6665.98
1/1/96 6655.41 6635.55 6665.96 6680.38 6665.96 6702.92
1/1/97 6655.40 6635.54 6665.91 6680.35 6665.94 6702.86
CI) 1/1/98 6655.34 6635.48 6665.89 6680.25 6665.96 6679.34 6702.80
1/1/99 6655.38 6635.51 6665.90 6680.27 6665.97 6679.37 6702.92
() 1/1/00 6655.36 6635.48 6665.86 6680.35 6665.97 6679.38 6702.92
�
• 1/1/01 6655.39 6635.52 6665.93 6680.33 6665.91 6679.32 6702.90
1/1/02 6655.44 6635.56 6666.07 6680.36 6665.96 6679.31 6702.96 6688.18 6672.92 6683.93
CD
1/1/04 6655.41 6635.55 6665.93 6680.29 6665.92 6679.32 6702.83 6688.14 6672.87 6683.85
1/1/06 6655.37 6635.55 6666.03 6680.25 6665.88 6679.24 6702.88 6688.10 6672.84 6683.85
~ 1/1/08 6655.41 6635.58 6666.03 6680.28 6666.01 6679.33 6702.89 6688.13 not found 6683.91
n 10/1/09 6713.16 6705.99
1/1/10
11/1/11 6658.99 6639.21 11111111111111111r7 6682.88 676111111....1r6687.41 6111111111Fil
5/1/13 6659.02 6639 19 6669.48 6683.89 6669 68 6682.52 6706 52 6691.74 not found 6607.30 6712.93 6705.86
7/16/13 6682.95 WOO 6604.47
7/5/14 6675.20
4/13/15 6658.99 6639.21 6669.95 6683.84 6669.72 6683.03 6706.40 6691.70 DESTROYED 668736 6712.95 6705.67 6695.91 6684.45 6675.23 6694.41 6702.35 6713.03
5/5/15 6682.90 6705.00
Max 6659.02 6639.21 6669.55 6603 89 6669 77 668303 6706.52 6691.74 6672.92 6687.41 6713.16 6705.99 6695.91 6684.47 6675.23 6694.41 6702.35 6713.03 0.00
Min 6655.34 6635.48 6665.85 6600 25 6665 80 6679.24 6702.80 6688.10 6672.84 6683.85 6712.93 6705.67 6695.86 6684.45 6675.20 6694.41 6702.35 6713.03 0.00
A Max-Min 3.68 3.73 3.70 3.64 3.89 3.79 3.72 3.64 0.08 3.56 0.22 0.31 0.05 0.02 0.03 0.00 0.00 0.00 0.00
DRG vs Coolbaugh Max A 3.68 3.73 3.70 3.64 3.89 3.79 3.72 3.64 0.08 3.56 0.22 0.31 ata na na ata ata na no
2015-2011(or initial)Data 0.01 0.00 0.03 0.00 -0.05 0.02 -0.04 0.05 na -0.05 0.00 -0.01 0.05 -0.02 0.03 na no na no
SSM surveys were begun in 1990 and were historically collected by Midford Coolbaugh of Shale Country Surveying.Coolbaugh collected SSM surveys until 2108 when he moved out of the area.The Coolbaugh survey elevations are generally consistent from year to year and
reflect no surface subsidence between 1990 and 2008.In 2011 Richard Bullen with DR Griffith&Associates Inc.(DRG)was contracted for the NS surveying operations. A review of DRG's survey data and comparison to Coolbaugh's survey data revealed discrepancies in well
locations and well elevations. These discrepancies are attributed to differences in technology,equipment type.NAD conversions.and surveyor datum. Coolbaugh surveys were done by differential leveling using NAD29(NGVD 29)datum.DRG uses NAD83(NAVDRS)datum.
In general,the DRG SSM surveys were noted to have an elevation that was approximately 2.4 feet higher than the Coolbaugh SSM surveys.The DRG updated survey data was used to generate a comprehensive survey database. Accurate elevation data is vital for monitoring
groundwater.establishing stratigraphic tops and controls,and topographic considerations such as pad/pipeline construction and reclamation.