2018-06-20_REVISION - M1977300

• Permit No: M1977300
• IBM Index Class Name: Revision
• Doc Date: 6/20/2018
• Doc Name: Adequacy Review Response
• From: Colorado Legacy Land, LLC
• To: DRMS
• Type & Sequence: TR26
• Email Name: MAC
• Media Type: D
• Archive: No

Decommissioning Plan Schwartzwalder Mine

RML CO-369-06
Cotter Corporation (N.S.L.) 11 March 2017

Table 2: Scoping Survey Soil Sampling Results

Sample Number Sample Location Description Uranium
pCi/g
Radium 226
pCi/g
#4 NE Water Treatment Plant (WTP)15.8 10.7
#5 East Ret Pond, South side 88.0 64.6
#6 East Ret Pond, North side 29.5 15.3
#7 South Ret Pond, North 23.8 17.8
#7 as-is 55.6 32.0
#8 South Mid Ret Pond, North 32.7 8.5
#9 Pit East WTP 1.7 0.7
#10 East of Ret Pond North 69.7 61.9
#11 East centerline Ret Ponds 73.8 7.0
#12 East centerline Ret Ponds 247.1 108.0
#12 as-is 211.9 136.0
#13 Road West Boneyard 2.6 1.2
#14A Road at Monitor Well #00 3.0 1.4
#14B (QA Dup)Road at Monitor Well #00 2.6 2.1
#15 Road at start of waste pile 130.7 12.0
#16 Road south waste pile 2/3 west 46.3 13.6
#17 Road at Monitor Well #0 228.1 128.0
#18 Across creek old boneyard 5.2 2.0
#19 South of Monitor Well #2 1.2 0.4
#20 Along creek bank NW of MW#3A 3.6 1.1
#21 Along creek at staff gauge Nof MW#3A 2.6 1.6
#22 South MW #3A 3.2 1.7
#23 East Sump #2 2.5 1.7
#24 NE Elec substation 193.6 77.5
#25 East of elec. Substation 3.4 1.2
#26 Three feet east of elec. Substation 25.4 6.3
#27 Adit 2207.0 269.0
#28 NE of Adit( Ore sorter area) 19.8 1.7
#29 Adit towards WTP 67.5 16.5
#30 Southeast MW#9 5.3 2.0
#31 Southeast MW#9 5.7 2.8
#32A Loading dock ramp 268.1 80.1
#32A as-is 116.4 58.3
#32B (QA Dup)Loading dock ramp 141.5 40.8
#33 Road between MW #7 & env air sampler 34.7 0.7
#34 West of Sump #1 4.3 1.7
#35 Road East of Sump 42.4 26.2
#36 Road at MW #8 12.1 15.5
#37 SW of entry gate property line 416 345.0
#38 Outside entry gate property line 83.9 45.9
#39 Old drying trenches area 3.4 2.8
#40 Old drying trenches area 6.8 2.8
#41 Old drying trenches area 2.3 1.5
#42 Old drying trenches area 1.6 1.4
WTP 1 Soil core under WWTP building 13.3 4.2
WTP 2 Soil core under WWTP building 1.6 0.6
WTP 3 Soil core under WWTP building 356 1.8
WTP 4 Soil core under WWTP building 14.9 3.2
WTP 5 Soil core under WWTP building 3.3 0.6
WTP 6 Soil core under WWTP building 2.5 0.7
WTP 7 Soil core under WWTP building 14.1 4.5
Trailer Pad 1 Soil core under trailer pad 11.3 3.8
Trailer Pad 2 Soil core under trailer pad 13.2 9.5
Trailer Pad 3 Soil core under trailer pad 3.7 1.5
Pond 1 Soil core under retention ponds 6.8 1.8
Sampling locations as shown in Figure 6