INVENTORY OF WELLS NEAR A FORMER
WASTE-DISPOSAL SITE, NASHUA,
NEW HAMPSHIRE, JUNE 1993
U.S. GEOLOGICAL SURVEY
Open-File Report 94-398
Prepared in cooperation with the
U.S. ENVIRONMENTAL PROTECTION AGENCY
REGION I

-------
                                       950R94013
INVENTORY OF WELLS NEAR A FORMER
WASTE-DISPOSAL SITE, NASHUA,
NEW HAMPSHIRE, JUNE 1993
By SARAH M. FLANAGAN
U.S. GEOLOGICAL SURVEY
Open-File Report 94-398
Prepared in cooperation with the
U.S. ENVIRONMENTAL PROTECTION AGENCY
REGION I
                    Bow, New Hampshire
                         1994

-------
                    U.S. DEPARTMENT OF THE INTERIOR
                          BRUCE BABBITT, Secretary

                            U.S. GEOLOGICAL SURVEY
                              Gordon P. Eaton, Director
For additional information write to:
District Chief
U.S. Geological Survey
525 Clinton Street
Bow, NH 03304
Copies of this report can be
purchased from:

U.S. Geological Survey
Earth Science Information Center
Open-File Reports Section
Box 25425, Mail Stop 517
Federal Center
Denver, CO 80225-0425
    Inventory of Welle Near a Former Waste-Disposal Site, Nashua, New Hampshire

-------
CONTENTS
Abstract	     1
Introduction	     1
Data-Collection Methods	     1
Well-Numbering System	     3
Well-Inventory Results	     3
      Domestic Wells	     3
      Landfill Wells	     3
      Public-Supply Wells	     3
      Observation Wells	     5
Summary	     5
References Cited	     5
ILLUSTRATIONS

   1.   Map showing location of the well-inventory study area, the Gilson Road waste-disposal site,
          and the Nashua "Four Hills" Landfill in Hollis and Nashua, New Hampshire	
   2.   Map showing location of domestic, public-supply, and observation wells in and near the
         study area in Hollis and Nashua, New Hampshire	
TABLES

   1.   Records of selected wells and one boring in Hollis and Nashua, New Hampshire	
   2.   Lithologic logs of selected wells and one boring in Hollis and Nashua, New Hampshire.,
                                                                                      Contents    III

-------
CONVERSION FACTORS AND VERTICAL DATUM
Multiply
foot (ft)
gallon per minute (gal/min)
inch (in.)
mile (mi)
square mile (mi )
By
0.3048
0.06308
25.4
1.609
2.59
To obtain
meter
liter per second
millimeter
kilometer
square kilometer
Vertical Datum

  Sea Level: In this report, "sea level" refers to the National Geodetic Vertical Datum of 1929—a geodetic datum derived from a
general adjustment of the first-order level nets of the United States and Canada, formerly called Sea Level Datum of 1929.
iv    Inventory of Wells Near a Former Waste-Disposal Site, Nashua, New Hampshire

-------
Inventory Of Wells Near A Former
Waste-Disposal Site, Nashua,
New  Hampshire, June 1993
By Sarah M. Flanagan

ABSTRACT

   Domestic, public-supply, and observation wells
near a former waste-disposal site along Gilson Road in
Nashua, New Hampshire, were inventoried in June
1993. Data include hydrogeologic information on 13
domestic wells,  11 observation wells in an adjacent
municipal landfill, 3 abandoned public-supply wells, 3
observation wells, and 1 test boring drilled by the U.S.
Geological Survey.
INTRODUCTION

   Domestic, public-supply, and observation wells
near a former waste-disposal site along Gilson Road in
Nashua, New Hampshire, were inventoried in June
1993. This inventory was done by the U.S. Geological
Survey (USGS) in cooperation  with the U.S.
Environmental Protection Agency (USEPA), Region I.

   During the 1960's and early 1970's, disposal of haz-
ardous and nonhazardous liquid waste around a pri-
vately owned garage along Gilson Road caused local
ground-water contamination (Weston, 1989). In 1981,
chemical analyses of ground-water samples from
domestic wells  downgradient from the Gilson Road
site indicated that the wells were contaminated with
volatile organic compounds (VOC's) and other hazard-
ous substances (Weston, 1989).  The site is currently
undergoing remediation under the authority of the
Comprehensive  Environmental Response, Compensa-
tion, and Liability Act (CERCLA) of 1980.

   The purpose of this report is to (1) inventory the
location and status of existing domestic, land-fill, pub-
lic-supply, and observation wells in the study area, and
(2) list available hydrogeologic data associated with
these wells.  The area of the inventory was limited to
about 1.7 mi near the Gilson Road waste-disposal site
in a residential area in southwestern Nashua, New
Hampshire (fig. 1). During the 1980's, the population
expanded rapidly because of the increase in trailer
parks and single-family homes. In addition, the munic-
ipal landfill north of, and adjacent to, the Gilson Road
waste-disposal site is currently (1993) undergoing
expansion (fig. 1).

  The major surface-water bodies  in the study area
include Lyle Reed and Trout Brooks, tributaries to the
Nashua River. The Nashua River is a major tributary
to the Merrimack River. The town of Hollis is just west
of the study area across the Nashua River (fig. 1). The
State and town boundaries between Nashua, New
Hampshire, and Pepperell, Massachusetts, are less than
1 mi to the south of the study area.

  The surficial geology  of the Pepperell Quadrangle
in which the study area is located,  was mapped at a
scale of 1:24,000 by Koteff and Volkmann (1973).
The hydrogeology of the Nashua area was studied by
Toppin (1987) as part of a regional study to map the
stratified-drift aquifers and determine their basic
hydraulic properties.

  The authors thank the personnel from the Nashua
Public Works  Department for assisting in the location
of observation wells in the "Four Hills" landfill, and a
private drilling company for providing aquifer-test
data.
DATA-COLLECTION METHODS

   Private homes were surveyed door-to-door in the
study area, and resident responses from 13 homes are
compiled in table 1 (at back of report).  Observation
wells in the Nashua "Four Hills" Landfill, which were
                                                                     Data-Collection Methods

-------
        42°45'
                             71 "32'
                                                                                               71 "30'
         42°43'
                                              NASHUA "FOUR HILLS
                                                  LANDFILL
                                               GILSON ROAD
                                               WASTE-DISPOSAL SITE
              Base modified from U.S. Geological Survey
              Pepperell, Mass.-N.H. 1:25,000,
              1965, photorevised 1979
              Polyconic projection, Zone 19
1,000   2,000    3,000 FEET
 I .      I.I
                                               EXPLANATION

                                              	 STUDY AREA BOUNDARY

                                              —- LANDFILL BOUNDARY
                                                                             400
                                                                                       800 METERS
 Figure 1. Location of the well-inventory study area, the Gilson Road waste-disposal site, and the Nashua
 "Four Hills" Landfill, in Hollis and Nashua, New Hampshire.
2    Inventory of Wells Near a Former Waste-Disposal Site, Nashua, New Hampshire

-------
within the boundary of the study area (fig. 1), also were
inventoried and field checked during the survey.  In
addition, original well-log, construction, and aquifer-
test data were obtained for an abandoned public-supply
well once owned by a private water company in the
study area.
well depth but not the depth to bedrock or depth of cas-
ing, with the exception of the homeowner for well
NAW-227.
                                                   Landfill Wells
WELL-NUMBERING SYSTEM

   Local numbers assigned to wells and test borings
consist of a two-letter town designation—"HS" for Hol-
lis and "NA" for Nashua; a supplemental letter designa-
tion ("A", borings for hydrogeologic purposes with no
casing set and "W", for all wells in which a casing was
set); and a sequential number in each town. For exam-
ple, the 220th well inventoried in Nashua is designated
NAW-220.
   About 35 observation wells were installed in the
Nashua "Four Hills" Landfill from 1983 to 1992.
Eleven of these wells were within the boundary of the
study area and were inventoried as part of this study
(fig. 2). The well in the landfill that is closest to and
downgradient from the Gilson Road waste-disposal site
is well NAW-237 (also known as MW-5).
Public-Supply Wells
WELL-INVENTORY RESULTS

   The hydrogeologic data presented in this section
include site records, well-construction records, explora-
tion-borehole logs, and aquifer-test field data.  A sum-
mary of the well inventory is presented in the following
sections for domestic, landfill, public-supply, and obser-
vations wells (table 2, at back of report). Locations of
inventoried wells and borings were plotted on the
l:25,000-scale Pepperell, Massachusetts-New Hamp-
shire USGS topographic map and are shown in figure 2.
Lithologic logs for 18 wells and 1 exploration borehole
are summarized in table 2.
Domestic Wells

   Of the 25 private homes surveyed, 9 are still con-
nected to domestic wells, 3 switched to a private water-
supply company but still have existing domestic wells
in place, 12 switched to a private water-supply company
and removed their domestic wells, and 1, across the
Nashua River in Hollis (HSW-70), has a bedrock well
that is used exclusively for restroom facilities (for a
private hunting club).

   Attempts to obtain hydrogeologic data for domestic
wells from the 25 homeowners were mostly unsuccess-
ful. Residents who still used their own wells knew the
   During the 1960's, three public-supply wells were in
use in the inventory area and downgradient from the
Gilson Road waste-disposal facility (fig. 2).  All three
wells have since been removed from service, and their
well casings were removed during the early 1970's. Two
of the three wells (NAW-157 and NAW-158) were
owned by a local trailer park and installed in  1959.
Attempts to  obtain hydrogeologic data for these two
wells were unsuccessful.

   A third, public-supply well (NAW-220) was owned
and operated by a private water-supply company on
land owned by a local trailer park.  This 24-inch-
diameter gravel-packed well was drilled in November
1969. A 192-hour aquifer test, using five observation
wells, was done from December 1-9, 1969, and a 3-day
recovery test was done after the pump was shut off. A
constant volume of 1,210 gal/min of ground water was
pumped from well NAW-220 for  the duration of the
aquifer test resulting in a total drawdown at the well of
29.29 ft (unpublished data on file with the Bow, New
Hampshire office of the U.S. Geological Survey).  In
1976 or 1977, the decision was made to abandon the
well (Bernard Rousseau, Pennichuck Water Works, oral
commun., 1993). Written documentation is not avail-
able about the conditions around the well at the time the
decision was made to abandon the well and remove the
casing.
                                                                               Well-Inventory Results

-------
                             71° 32'
                                                                                                71" 30'
       42°45'
        42U43'
                                                                       NASHUA
                                                                       "FOUR HILLS"
                                                                       LANDFILL
                                  EXPLANATION

                               LANDFILL BOUNDARY
                              WELLS — Records for wells are in table 1

                   NAW-231 ^  Observation well and number

                   NAW-225 0  Domestic supply well and number

                   NAW-220 (T>  Abandoned public-supply well and number

                               Test boring
NAA-219
                                                       1,000    2,000    3,000 FEET
                                                         400
                                                                   I
                                                                  800 METERS
Figure 2. Location of domestic, public-supply, and observation wells in and near the study area in Hollis
and Nashua, New Hampshire.
    Inventory of Wells Near a Former Waste-Disposal Site, Nashua, New Hampshire

-------
Observation Wells

   On July 12-13, 1993, test-well drilling was done by
the U.S. Geological Survey on private property west of
West Hollis Street near the present-day storage facilities
(J.D. Ayotte, U.S. Geological Survey, written commun.,
1993). Three test sites were selected for drilling—wells
NAW-240 (29 ft) and NAW-241 (14 ft) nested together
at one site, well NAW-242 at another site, and boring
NAA-219 at the third site (fig. 2).
SUMMARY

   An inventory of 13 domestic, 3 abandoned public-
supply, and 14 observation wells, and  1 boring was
completed in June 1993 near a former waste-disposal
site along Gilson Road in Nashua, New Hampshire.
Hydrogeologic data, including aquifer-test data, were
obtained  for one of the former public-supply wells
(NAW-220).  Lithologic, ground-water level, well-
construction, and other data were collected and
tabulated.
REFERENCES CITED

Koteff, Carl and Volkmann, R.P., 1973, Surficial geologic
    map of the Pepperell Quadrangle, Middlesex County,
    Massachusetts and Hillsborough County, New Hamp-
    shire: U.S. Geological Survey, Geologic Quadrangle
    Map GQ-1118, scale 1:24,000.

Toppin, K.W., 1987, Hydrogeology of stratified-drift aquifers
    and water quality in the Nashua Regional Planning
    Commission Area, South-Central New Hampshire: U.S.
    Geological Survey Water-Resources Investigations
    Report 86-4358,45 p., 6 pi.

Weston, Roy R, Inc.,  1989, Remedial program evaluation,
    Gilson Road site, Nashua, New Hampshire: Concord,
    N.H.
                                                                                     References Cited

-------
Table 1. Records of selected wells and one boring in Hollis and Nashua, New Hampshire
[Site No.: First two characters are the town code (HS for Hollis, New Hampshire; NA for Nashua, New Hampshire). Third
Latitude, Longitude: Accurate to 5 seconds. Type of well: Bor, test boring; BrW, bedrock well; Dug, dug well; Dvn, driven
unused.  Water level: reported as feet below land surface; gal/min, gallon per minute]
   Site No.
             Latitude   Longitude
                           Owner's name
                                       Other        Year      Type  Use of  Depth
                                    identification   completed   of well  water   of well

HSW-37
HSW-70

NAA-219
NAW-155
NAW-156
NAW-157
NAW-158

424419
424334

424315
424307
424306
424347
424349

713152
713218

713205
713107
713213
713144
713158
Hollis
Gagnon
Lone Pine Hunting Club
Nashua
Dobbens, John
Poirier, Camil
Lagios
Jensen's Trailer Park
do.

1955
—

1993
—
1936
1959
1959

Dug
BrW

Bor
Dug
Dug
GPW
GPW

H
H

U
U
H
U
U

14.1
—

	
20.3
53.1
45
80
  NAW-220    424321
           713139
           Pennichuck Water Works
                          Jensen W-l
               1969
         GPW
         U
       67.5
  NAW-221
  NAW-222
424327
424250
  NAW-223    424308
713151
713035

713102
Morey, Mary
Kane, Maryanne

Taylor, Richard
165.0023
1943
1987

1957
BrW
BrW

Dug
H
H

H
300
200

 20
  NAW-224    424325
           713156
            Shaw, Steven
                                                  Dug
                                 U
NAW-225
NAW-226
NAW-227
NAW-229
NAW-230
NAW-231
NAW-232
NAW-233
NAW-234
NAW-235
NAW-236
NAW-237
NAW-238
NAW-239
NAW-240
NAW-241
NAW-242
NAW-243
NAW-244
424308
424303
424305
424307
424314
424319
424352
424352
424358
424355
424349
424340
424337
424354
424333
424333
424322
424322
424326
713142
713213
713156
713155
713202
713106
713122
713122
713116
713122
713131
713134
713115
713109
713200
713200
713203
713110
713112
Lambert, Romeo
Humphry, Lawrence & Ellen
Benson, Alfred
Whynott, Bob (renter)
Fortier, William J.
Nashua "Four Hills" Landfill
do.
do.
do.
do.
do.
do.
do.
do.
Dobbens, Don
do.
do.
Nashua "Four Hills" Landfill
do.
7
19
B-3S
MW-1
MW-1S
MW-3
MW-4
MW-5
MW-7

MW-8
__
_-
__
B-4
B-15-T
—
—
-
1970
1972
1964
—
1963
1990
1983
1990
1983
1983
1983
1983
1983
1992
1993
1993
1993
1993
1993
Dvn
BrW
BrW
Dug
BrW
Obs
Obs
Obs
Obs
Obs
Obs
Obs
Obs
Obs
Obs
Obs
Obs
Obs
Obs
H
H
H
H
H
U
U
U
U
U
U
U
U
U
U
U
U
U
U
15
150
200
—
150
30
93.5
49.5
45
85
33
76
14
28
29
14
30
84.5
132
     Inventory of Wells Near a Former Waste-Disposal Site, Nashua, New Hampshire

-------
character—W, indicates well; A, indicates boring. The numbers are sequential in the order the wells were inventoried.
well; GPW, gravel packed well; Obs; observation well. USGS: U.S. Geological Survey. Use of water: H, domestic use; U,
                    Casing
                        Screened interval (ft)
                                                  Water level
Site No.
Height
above
ground
(ft)
Depth
to
bottom
(ft)
Dia-
meter
(in.)
Top of
opening
Bottom
to
opening
Altitude
above D;
sea level
Depth
itC (ft)
Remarks
 HSW-37
 HSW-70
 NAA-219
 NAW-155
 NAW-156
 NAW-157
 NAW-158

 NAW-220
 NAW-221
 NAW-222

 NAW-223
 NAW-224
2.5
52
                12
               36
                 8
               36
24
                                   Hollis
                                       175
                                       185
                                  Nashua
                                       185
                                       193
                                       197
                                       195
                                       170
                                        6-20-63
                                        7-13-93
                                        7-16-93
                                        7-31-62
                                         8.5
                                        14
                                        15.8
                                        21.4
52
                                     67.5
170
11-01-69    8
1.0
60
3.0
        36
                               180
                               210

                               190
                                                            185
                                                       10-08-87
                                                       6-08-93
                                        25
                                                                 10.3
                                                                                      Not used for drinking water
Boring; drilled by USGS
Not in use
Destroyed in 1992.
Not in use, casing removed
Not in use, casing removed

Originally used for public supply.
During aquifer test, well was
pumped 1,210 gal/min for  192
hours from Dec. 1-9, 1969. Casing
was removed in 1976-77 because of
ground-water contamination.
Drilled by R.E. Chapman
In use
Owner reports "hard water" from
well. Drilled by Skillings
Dug well  in cellar of house. Owner
also uses a driven point well about
300 ft from house. Water from this
well is used for the garden and lawn
Not in use
NAW-225
NAW-226
NAW-227
NAW-229
NAW-230
NAW-231

NAW-232
NAW-233


NAW-234
NAW-235
NAW-236
NAW-237
NAW-238
NAW-239
NAW-240
NAW-241
NAW-242
NAW-243
NAW-244
-
-
3.29

.54
3.29


.65
1.24
2.41
1.95
4.22
3.24


„
	
3.0
35
-
10

90
39.5


5
15
13
6
4.5
20
26.5
11.5
27.5

117
6
-
1.5

1.5
1.5


2
2
2
2
2
1.5
2
2
2
1.5
1.5
-
-
10

90
39.5


5
15
13
6
4.5
20
26.5
11.5
27.5
—
117
-
-
30

93.5
49.5


45
85
33
76
14
28
29
14
30
84.5
132
190
210
190
180
195
199.37

187.67
188.53


173.6
185.3
178.3
177.9
184.6
177.14
165
165
185
235
305
-
-
12-19-90

12-19-90
2-11-92


12-19-90
12-19-83
12-19-90
12-19-90
1-09-91
2-11-92
7-13-93
7-13-93
7-13-93
-
—
-
—
12.5

22.8
20.9


4.3
18.1
10.5
10.1
8.77
.9
11
11
21
—
--
In use
Do.
Do.
In use; in cellar of house
In use
A bedrock well also is nested here.
Drilled by All Terrain Drilling
Drilled by Soils Exploration
Shallow well nested with NAW-
232 (MW-1) Drilled by All Terrain
Drilling
Drilled by Soils Exploration
Do.
Do.
Do.
Do.
Do.
Drilled by USGS
Do.
Do.
Drilled by Soils Exploration
Do.
                                                                                                        Table 1

-------
Table 2. Lithologic logs of selected wells and one boring in Nashua, New Hampshire
              Description of material
 Depth (ft)
From   To
             Description of material
 Depth (ft)
From    To
NAA-219
Sand, fine to very fine; few pebble	   0
Silt and sand till; few pebbles and
   cored cobbles	   7
Refusal, firm; probably bedrock	  16
 NAW-155
 Sand and gravel	   0
 Bedrock	  20

 NAW-220
 Sand, fine, brown	   0
 Sand, fine to medium	  30
 Sand, coarse and medium gravel	  48
 Gravel, coarse	  50
 Bottom of hole	  67.5
         7

         16



         20
        30
        48
        50
        67.5
 NAW-222
 Sand and gravel	  0     9
 Bedrock	 50  -200

 NAW-223
 Sand and gravel	  0    20
 Bottom of hole	 20
 NAW-224
 Sand and gravel	  0

 NAW-225

 Sand	  0    15
 Bottom of hole	 15

 NAW-231

 Sand, brown, organic	  0     0.5
 Sand, fine to medium, brown; trace of silt	  0.5-  3
 Sand, fine to coarse, brown	  3    15.7
 Silt, brown, and fine sand	 15.7 - 24
 Sand, fine, brown	 24    28
 Silt, brown, and fine sand	 28    32.3
 Till, sandy, gravelly; some silt and cobbles	 32.3 - 36.6
 Bedrock (cored 6 in.)	 36.6
 NAW-232

 Sand, fine to medium, dark brown; some silt....  0     5.5
 Sand, fine to medium, light brown	  5.5- 41
 Sand, fine, brown	 41    87
 Till (possible, no recovery)	 87    90
 Bedrock (cored 5 ft)	 90
NAW-234
Top soil, reddish-brown, fine sand and pebbles   0     2
Sand, fine, light brown; little silt	   2     8
Silt, light brown; little fine sand	   8    24
Sand, fine to medium, light brown; little silt;
  trace of gravel	  24    30
Sand, fine to medium, and silt, light brown	  30    33.5
Sand, medium to coarse, light brown;
  few gravel	  33.5- 36
Sand, fine, light brown; few gravel	  36    40
Sand, fine to medium, light brown	  40    50
Till, silt and gray fine sand, some pebbles;
  trace of clay	  50    56
Bottom of hole	  56
                NAW-235
                Fill, fine sand and silt, dark brown; pebbles	   0     2
                Sand, fine to coarse, brown; trace of silt	   2    10
                Sand, fine, light brown	  10    45
                Sand, fine to medium, light brown	  45    75
                Sand, fine, light brown	  75    83
                Till; silt, brown-gray; fine sand; little clay;
                  pebbles	  83    85
                Bottom of hole	  85

                NAW-236
                Top soil, silt and fine sand, dark brown	   0     1
                Sand, fine to medium, light brown	   1    25
                Sand, fine to coarse, light brown; few gravel...  25    33
                Till, silt, gray fine sand, pebbles;
                  very compact	  33    37.5
                Bottom of hole	  37.5

                NAW-237
                Sand, medium to coarse, light brown	   0     8.5
                Sand and gravel, medium to coarse,
                  light brown	   8.5 - 14
                Sand and gravel, medium to coarse,
                  light brown; some rock fragments	  14    19
                Sand and gravel, coarse, brown	  19    24
                Sand, coarse, brown	  24    29
                Sand, medium to coarse, brown	  29    49
                Sand, medium to coarse, brown; trace of silt....  49    60
                Sand and gravel, medium to coarse, brown;
                  trace of silt	  60    67
                Sand, fine to medium, brown; trace of silt	  67    74
                Sand, fine to coarse, brown; little silt	  74    75.5
                Till, silt to fine sand and pebbles,
                  gray-brown	  75.5. 76
                Bottom of hole	  76
8    Inventory of Wells Near a Former Waste-Disposal Site, Nashua, New Hampshire

-------
Table 2.  Lithologic logs of selected wells and one boring in Nashua, New Hampshire—Conf/nued
              Description of material
                                         Depth (ft)
                                        From    To
NAW-238

Till, silt, sand, and pebbles	   0     7.5
Bedrock (possible); cored 6.5 ft	   7.5
NAW-239

Sand, brown, and organic silt	   0     0.7
Sand, fine to medium, brown; some coarse
   sand; little silt	   0.7-   2
Gravel, brown, and fine to coarse sand; some
   cobbles; little silt	   2     8
Sand, fine to medium, brown; trace of silt
   and coarse sand	   8    18.4
Gravel, and fine to medium sand, brown;
   little silt and coarse sand	  18.4-  29.3
Bedrock (cored 5 ft)	  29.3-  35

NAW-240
Sand, very fine to fine, tan; coarser
   with depth	   0    10
Sand, medium to coarse, tan; moderately
   to well sorted	  10    21
Sand, fine with some coarser layers	  21    31
Till; loosely compacted, mostly coarse sand....  31    40
Refusal, firm; probably bedrock	  40
Description of material
 Depth (ft)
From    To
                                                         NAW-242
                                                         Sand and silt, very fine	   0    12
                                                         Till, sandy	  12    15
                                                         Sand, very fine and silt	  15    24
                                                         Till; loosely compacted; more compact
                                                           with depth	  24    33.5

                                                         NAW-243

                                                         Tree stump	   0     1.4
                                                         Sand, gravel, clay, silt	   1.49
                                                         Till, sandy, gravelly, clayey, silty	   9    84.5
                                                         Bottom of hole	  84.5
                                                         NAW-244
                                                         Till; fine-medium silty sand; gravel and
                                                           cobbles	   0  -100
                                                         Till; same as above, but more cobbles	100  -125
                                                         Boulder	125  -126
                                                         Till, many cobbles; weathered bedrock	126  -137
                                                         Bedrock (cored 3 ft)	137  -140
                   «U.S.  GOVERNMENT PRINTING OFFICE:! 9 94-502-42 1 /00035
                                                                                                    Table 2

-------