ML19163A360
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Former UNC Facility Date: Sept 2012 Project #: New Haven File Name: Figure 1-1 Prepared By: K. Jackson SITE LOCATION Former UNC Facility New Haven Connecticut 0
100 200 300 400 50 Feet Figure 1-1 Former UNC Facility Sources: Esri, DeLorme, NAVTEQ, USGS, Intermap, iPC, NRCAN, Esri Japan, METI, Esri China (Hong Kong), Esri (Thailand),
TomTom, 2012 Location of Connecticut in the United States Location of Former UNC Facility
Chemistry Laboratory Decon Pit Area X-Ray Read Room Residential Property Garage Argyle Street Sewer South Trench Section 2 South Trench Section 1 Laydown Area Reference Area South Trench Section 3 South Trench Section 5 South Trench Section 4 Column 17/18 Lateral Trench Section 6 Haul Road North Trench Section 6 Manhole #1 Manhole #2 Shelton Argyle 9
8 7
6 5
4 3
2 1
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 Date: Sept 2012 Project #: New Haven File Name: Figure 1-2 Prepared By: K. Wheatley SITE LAYOUT Former UNC Facility New Haven Connecticut q
0 40 80 120 160 20 Feet Legend Columns Manhole Locations Walls Sewer Line South Trench Figure 1-2 Laydown Area
Chemistry Laboratory Decon Pit Area X-Ray Read Room South Trench Section 2 South Trench Section 1 South Trench Section 3 South Trench Section 5 South Trench Section 4 Column 17/18 Lateral Trench Section 6 North Trench Section 6 Shelton Argyle 9
8 7
6 5
4 3
2 1
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 Date: Sept 2012 Project #: New Haven File Name: Figure 3-1 Prepared By: K. Wheatley BASELINE GAMMA WALKOVER SURVEY Former UNC Facility New Haven Connecticut q
0 40 80 120 160 20 Feet Legend Columns Manhole Locations Walls Sewer Line South Trench Figure 3-1 Laydown Area Z-Score
<1 1-2 2-3
>3
GF GF GF GF GF GF GF South Trench Section 3 South Trench Section 2 Decon Pit Excavation X-Ray Read Room Excavation 43 42 41 40 39 38 37 36 35 34 2
3 4
5 6
7 1
Date: Sept 2012 Project #: New Haven File Name: Figure 3-2 Prepared By: K. Wheatley GEOPROBE INVESTIGATION SAMPLE LOCATIONS Former UNC Facility New Haven Connecticut q
0 5
10 15 20 2.5 Feet Columns Walls South Trench Figure 3-2 Geoprobe Sample Locations GF
GF GF GF GF GF GF GF GF GF GF GF GF GF GF GF GFGF South Trench Section 3 X
0,0 40 39 38 37 9
8 7
6 5
4 3
2 1
17 16 15 14 13 12 11 10 Date: Sept 2012 Project #: New Haven File Name: Figure 3-3 Prepared By: K. Wheatley X-RAY READ ROOM GEOPROBE INVESTIGATION SAMPLE LOCATIONS Former UNC Facility New Haven Connecticut q
0 2.5 5
7.5 10 1.25 Feet Columns Walls South Trench Figure 3-3 X-Ray Room Wall Concrete Wall X-Ray Room Floor
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Decon Pit Area X-Ray Read Room South Trench Section 2 South Trench Section 1 Laydown Area Reference Area South Trench Section 3 ench n 4 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 Catch Basin #2 Catch Basin #1 Date: Sept 2012 Project #: New Haven File Name: Figure 3-4 Prepared By: K. Wheatley LAYDOWN AREA PRE-EXCAVATION SURFACE GAMMA WALKOVER SURVEY Former UNC Facility New Haven Connecticut q
0 10 20 30 40 5
Feet Legend Columns Catch Basin Walls Sewer Line South Trench Figure 3-4 Laydown Area Z Score
< 1 1 - 2 2 - 3
> 3
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GF GF GF GF GF GF GF GF GF GF GF GF GF GF GF GF Decon Pit Area X-Ray Read Room South Trench Section 2 South Trench Section 1 Laydown Area Reference Area South Trench Section 3 h
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 9
8 7
6 5
4 3
2 14 16 13 15 12 11 10 1
Catch Basin #2 Catch Basin #1 Date: Sept 2012 Project #: New Haven File Name: Figure 3-5 Prepared By: K. Wheatley LAYDOWN AREA CHARACTERIZATION SURVEY SAMPLE LOCATIONS Former UNC Facility New Haven Connecticut q
0 10 20 30 40 5
Feet Legend Columns Sample Locations Walls Sewer Line South Trench Figure 3-5 Laydown Area Z Score
< 1 1 - 2 2 - 3
> 3 G
Note: Results with Yellow ID represent locations with results above release critera (30 pCi/g total)
Laydown Area Results Above Release Criteria (30 pCi/g total)
Location 8: Depth 1-2ft - 105 pCi/g U-total (3.6 pCi/g U-235, 13% enriched)
Location 13: Depth 0-1ft - 1,583 pCi/g U-total (54 pCi/g U-235, 11% enriched)
Location 13: Depth 6-7ft - 419 pCi/g U-total (14 pCi/g U-235, 8% enriched)
Location 14: Deptn 0-1ft - 130 pCi/g U-total (4.3 pCi/g U-235, 8% enriched)
Location 15: Depth 2-3ft - 6,966 pCi/g U-total (248 pCi/g U-235, 60% enriched)
Location 15: Depth 6.5-7.5ft - 305 pCi/g U-total (10 pCi/g U-235, 9% enriched)
Location 16: Depth 0-1ft - 109 pCi/g U-total (3.7 pCi/g U-235, 8% enrinched)
Catch Basin
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Actual Laydown Area Excavation
Date: Sept 2012 Project #: New Haven File Name: Figure 3-6 Prepared By: K. Wheatley UTILITY TRENCH DRAINAGE HOLE SAMPLE LOCATIONS Former UNC Facility New Haven Connecticut Figure 3-6 NORTH Western End Eastern End Building 3H/6H 53 119 Building 3H/6H 80' 69(1) 70' 39(1) 60' 37(1) 50' 39(1) 40' 117(1) 30' 87(1) 20' 107(1) 3.8 pCi/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 2 add'l samples (1) 8 add'l samples 43 add'l samples Columns 8-27 Columns 27-41 Columns 39-40 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 NORTH TRENCH COLUMN 17/18 LATERAL TRENCH SOUTH TRENCH 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 TRENCH SECTION 5 S
E C
T I
O N
1 SOUTH TRENCH SECTION 4 SOUTH TRENCH SECTION 3 SOUTH TRENCH SECTION 2 SECT.
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 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 above (results of these three samples were 34, 66, and 46 pCi/g, respectively from West to East).
G G
G G
G G
G G
G G
South Trench North Wall South Trench South Wall UNC-INV-DH12-2FS UNC-INV-DH12-1FS UNC-INV-DH12-2FE UNC-INV-DH12-1FE UNC-INV-DH12-1FW UNC-INV-DH12-2FW UNC-INV-DH12-3FW UNC-INV-DH12-4FW UNC-INV-DH12-VOID UNC-INV-DH12 (Drainage Hole 12)
Date: Sept 2012 Project #: New Haven File Name: Figure 3-7 Prepared By: K. Wheatley SOUTH TRENCH DRAINAGE HOLE 12 SAMPLING LOCATIONS Former UNC Facility New Haven Connecticut 0
0.5 1
1.5 2
0.25 Feet Figure 3-7 Removed Concrete Floor Intact Concrete Floor Sample Locations G
South Trench Section 2 South Trench Section 3 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 Date: Sept 2012 Project #: New Haven File Name: Figure 5-1 Prepared By: K. Wheatley POST REMEDIATION GAMMA WALKOVER SURVEY Former UNC Facility New Haven Connecticut q
0 8
16 24 32 4
Feet Legend Columns Manhole Locations Walls Sewer Line South Trench Figure 5-1 Laydown Area Z-Score
<1 1-2 2-3
>3 North Trench Section 6 FRAC TANK GAMMA WALKOVER SURVEY IMC AREA GAMMA WALKOVER SURVEY
South Trench Section 2 South Trench Section 3 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 Date: Sept 2012 Project #: New Haven File Name: Figure 5-2 Prepared By: K. Wheatley POST REMEDIATION GAMMA WALKOVER SURVEY Former UNC Facility New Haven Connecticut q
0 8
16 24 32 4
Feet Legend Columns Manhole Locations Walls Sewer Line South Trench Figure 5-2 Laydown Area CPM
< 9,200
> 9,200 North Trench Section 6 FRAC TANK GAMMA WALKOVER SURVEY IMC AREA GAMMA WALKOVER SURVEY