ML19163A321

20190415_UNC New Haven Racr, Appendix K Soil Boring Logs, Utility Trench Soil Sampling Data

ML19163A321
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Site:	07000371
Issue date:	11/30/2018
From:	Cabrera Services
To:	NRC Region 1
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NORTH WesternEnd EasternEnd Building3H/6H 53 119 Building3H/6H 80' 69(1) 70' 39(1) 60' 37(1) 50' 39(1) 40' 117(1) 30' 87(1) 20' 107(1) 3.8pCi/g 0'

69(1) 1 2

3 4

5 6

7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 0.9 110 74 99 25 76(1) 5.9 1.3(1) 0.8 11(1) 294(1) 469(1) 534(1) 0.8 2.1(1) 625 54 161 701 60(1) 397 1,099(1) 874 412 486 8.8(1) 4.2(1) 2.5(1) 148 176 167(1) 476 708 1,741(1) 387 2add'lsamples(1) 8add'lsamples 43add'lsamples Columns827 Columns2741 Columns3940 Max:72.1 Max:2.59 Max:666 Min:68.2 Min:0.81 Min:8.2 Mean:70.1 Mean:1.5 Mean:152 LEGEND:

80' = 80 feet north of South Trench 7 = Column Number 54 = 54 picocuries per gram (pCi/g) total uranium RED = greater than 30 pCi/g total uranium RED = greater than 436 pCi/g total uranium (1) = Sample point determined not to be representative and not used to estimate distributed total uranium concentrations in soil (e.g., collected from shallow soil within a drainage hole rather than sampled from greater depth within drainage hole, represents soil from within a preferential pathway for contamination, rather than being representative of distributed contamination in soil underneath floor slab).

NORTHTRENCH COLUMN17/18LATERALTRENCH SOUTHTRENCH 418(1) 4.6(1)

NOTES:Column 17/18 Lateral Trench soil samples are collected from soils exposed in a channel in the floor except for the 0' sample collected from debris resting on the floor of the trench.

North Trench and South Trench soil samples are collected from drainage holes in the floor. Samples from Columns 43 to 45 are sludge from drainage holes. Three additional samples were collected of debris from the floor of the North Trench between Columns 16 and 18 and are not shown below (results of these three samples were 34, 66, and 46 pCi/g, respectively from West to East).

SOUTH TRENCHSECTION5 S

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1 SOUTH TRENCHSECTION4 SOUTH TRENCHSECTION3 SOUTH TRENCHSECTION2 SECT.1