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Christine Johnston, MCC <br />November 19, 1998 <br />Page 3 <br />except for the CDMG locations of July 23, 1996 that are recorded chronologically as they were <br />visited. <br />Observations of September 9, 1998 <br />Location 1. Located near the northeast comer of lonewall Panel 10 150-100 feet S50°E of <br />SOM-80. Cracks: <br />• Most recent (month or so old) trend N80°E and are '/ to 1 inch wide. <br />• NS°E, '/z to'/. inch wide, cracks become narrower eastward down road. <br />• N30°W, only a few piping holes aze visible, mostly healed. <br />Location 2. Located roughly above chain pillars between Panels 10 and 1 l 500 feet south of <br />panel boundary. Cracks probably are due to a combination of mass-gravity movement and <br />subsidence; caused mainly by mass-gravity movement (MG). <br />• Crack up to 1 %: inches vending E-W; crack under big rock probably caused by mass- <br />gravity movement. <br />• Crack on road 100 feet E of Location 2 trends roughly E-W and is '/. to '/z inch wide. <br />Location 3. A 30-feet diameter azea of crenulate cracks located approximately 300 feet south <br />of SOM-80 near northern edge of Panel 10. Cracks: <br />• Trend on one set of cracks is roughly north-south and are % to'/. inch wide. <br />• Another set trends E-W and is 1/8 to''/z inches wide. <br />Location 4. Located on top of soil pile at the northeast comer of Panel l0 (outside comer). <br />This location is in the vicinity of the recently constructed Sylvester Gulch Facilities Area and <br />cracking may be due to construction settling. Cracks: <br />• Trend N70°E for 75 to 100 feet;'/. to 1 inch wide; local diverging, crow-foot geometry. <br />• Estimated cause mass-gravity movement = 70% and subsidence = 30%. <br />Location 5. Located about 200 southwest of location 4 near drainage ditch above a linear seep <br />area. This location is in the vicinity of the recently constructed Sylvester Gulch Facilities <br />Area and cracking may be due to construction settling. <br />• crenulate crack trends about N70°E for 100 feet or so; I to 3 inches wide on ditch bank. <br />• Cracks aze fresh looking (last few weeks or months); estimated cause mass-gravity <br />movement = 85% and subsidence = 15%. <br />Location 6. Located on main road to new Sylvester Gulch mine facilities 400 to 500 feet south <br />of Location 4 and about 300 feet south of large well with deformation in the hole (located <br />Wright Water Engineers, Inc.. 2490 W. 26'" Avenue, Ste. 100A, Denver, CO 80211 <br />Tel. 3 03/4 80. 1 70 0: Fax. 303/480-1020, e-mail:knvnght@wrightwater.com <br />