Appendices J & K

173 Pages·2015·4.72 MB·English

Appendix J
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Table J-1
West Parcel Monitoring Well Details

Site Management Plan
General Motors LLC
Former General Motors Assembly Plant West Parcel Site, Sleepy Hollow, NY
Installation Total Depth Screened Elevation
Well ID Well Type Easting Northing
Completion Date (ft bgs) Interval (ft bgs) TIC (ft)
OW-6 12/2/1996 overburden 14.5 4.5 - 14.5 664911.9800 820606.7380 8.74
OW-7 11/27/1996 overburden 15.0 5.0 - 15.0 664959.8310 820271.8470 9.59
OW-8 11/27/1996 overburden 15.0 5.0 - 15.0 665399.7700 820436.4300 7.43
OW-10 12/2/1996 overburden 14.5 4.5 - 14.5 665807.3970 822255.1530 8.31
OW-11 12/2/1996 overburden 14.0 3.0 - 13.0 665625.5490 821961.5140 5.46
OW-24R 9/26/2007 overburden 19.0 9.0 - 19.0 665199.5000 821311.8000 13.00
OW-25 10/23/2003 overburden 20.0 9.0 - 19.0 665100.5164 821058.5182 13.95
OW-27 5/3/2004 overburden 17.0 2.0 - 17.0 665025.6090 820927.3320 7.54
OW-36 4/26/2004 overburden 18.0 3.0 - 18.0 666065.3340 819801.7490 10.46
OW-37 4/26/2004 overburden 18.0 3.0 - 18.0 666044.1200 819844.1010 10.76
OW-38 4/27/2004 overburden 18.0 3.0 - 18.0 666226.2350 819919.9350 11.03
OW-40 4/28/2004 overburden 18.0 3.0 - 18.0 665382.8400 820522.4500 7.62
OW-43 4/29/2004 overburden 18.0 3.0 - 18.0 665478.2200 820571.8150 5.81
IT-47-MW-5 9/26/2007 overburden 22.0 10.0 - 20.0 665173.8756 821240.1088 13.07
OX-47-MW-11 3/3/2008 overburden 19.2 8.0 - 18.0 665231.3000 821379.2000 13.13
OX-UST-MW-1 2/26/2008 overburden 16.0 3.0 - 13.0 665686.3000 821434.0000 6.55
OX-UST-MW-5 2/25/2008 overburden 22.0 3.0 - 13.0 665528.5000 821189.2000 8.75
OX-UST-MW-7 2/27/2008 overburden 14.0 3.0 - 13.0 665542.0000 821010.9000 6.61
OX-UST-MW-9 2/27/2008 overburden 24.0 7.0 - 17.0 665445.2000 820957.6000 8.79
Notes:
1. See Monitoring Well Boring and Construction Logs (attached) for details on well construction.
2. Horizontal Datum is New York State Plane Coordinate System NAD83 NY East 3101
3. Elevations are based on the North American Vertical Datum of 1988.
Acroynms and Abbreviations:
ft bgs - feet below ground surface
TIC - Top of Inner Casing
2231311222_Appendix Table J-1_MW Details West.xlsx Page 1 of 1

Date Start/Finish: 9/26/07 Borehole Depth: 19' bgs Well/Boring ID: OW-24R
Drilling Company: B&BDrilling/HRS Drilling Surface Elevation: NA Client:General Motors
Driller's Name: Gordon Blewett Casing Elevation: NA
Drilling Method: Geoprobe Geologist: Jennifer Sandorf Location:Former General Motors Assembly
Plant Site
4-foot Macrocore Sampler Sleepy Hollow, NY
umber pe et) e (ppm) mn
DEPTH ELEVATION Sample Run N Sample/Int/Ty Recovery (fe PID Headspac Geologic Colu Stratigraphic Description CWoenlsl/tBruocrtiniogn
0 0 0
Brown TOPSOIL, loose, dry.
CONCRETE fragments.
Light brown fine to coarse SAND, little fine to coarse Gravel, dense, dry,
crumbly.
1 0-4 2.9 0
0
0
0
Light gray to tan SILT, little fine Sand, stiff, hard, dry.
5 -5 5
2 4-8 4.0 0 1" Schedule 40
0 PVC riser (1' ags -
0 Reddish brown SILT, little fine Sand, stiff, hard, dry. 9' bgs)
0
Pinkish tan very fine SAND, moderately dense, dry. Bentonite seal (7-8'
bgs)
Brown SILT, trace medium coarse Gravel, medium stiff, nonplastic, moist.
10-10 10
3 8-12 3.0 0 Brown to reddish brown very fine SAND, trace coarse Sand, medium 1" Schedule 40
0 dense, moist to wet. PVC 0.010" slotted
0 screen (9-19' bgs)
0
Morie #1 Sand (8-
Reddish brown fine to medium SAND, some Silt, trace fine Gravel,
19' bgs)
moderately loose, wet.
4 12-16 4.0 0
Brown fine to medium SAND, little fine to coarse Gravel, moderately loose,
0
wet.
0
15-15 0 15
Remarks: a/bgs = above/below ground surface; NA = Not Applicable/Available;
ft AMSL = feet above mean sea level.
Vertical datum is NAVD 88.
Set temporary well at 19' bgs.
Project: B0064462.036 Template:G:\COMMON\rockware\LogPlot\LogFiles\Template\bl64462_2007.ldf Page: 1 of 2
Data File:OW-24R.dat Date:9/26/07
Client:
Well/Boring ID: OW-24R
General Motors
Site Location:
Borehole Depth: 19' bgs
Former General
Motors Assembly
Plant Site
er m)
b p
DEPTH ELEVATION Sample Run Num Sample/Int/Type Recovery (feet) PID Headspace (p Geologic Column Stratigraphic Description CWonesll/tBruocrtiinogn
Brown fine to coarse SAND, little fine to medium Gravel, trace Silt,
moderately loose, wet,
Morie #1 Sand (8-
19' bgs)
5 16-19 2.7 0
0
0 1" Schedule 40
0 PVC 0.010" slotted
screen (9-19' bgs)
Refusal; grade located 7" below concrete slab.
20-20 20
25-25 25
30-30 30
35-35 35
Remarks: a/bgs = above/below ground surface; NA = Not Applicable/Available;
ft AMSL = feet above mean sea level.
Vertical datum is NAVD 88.
Set temporary well at 19' bgs.
Project: B0064462.036 Template:G:\COMMON\rockware\LogPlot\LogFiles\Template\bl64462_2007.ldf Page: 2 of 2
Data File:OW-24R.dat Date:9/26/07