well completion diagrams and soil boring logs€¦ · 03-03-2009 c:\program...

$: Well Completion Diagrams and Soil Boring Logs€¦ · 03-03-2009 C:\Program Files\mtech2002\acegeo\17.bo r Windsor, CO Project # 5027 Site Investigation Atlas "E" Missile Site No$
Well Completion Diagrams and Soil Boring Logs

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Windsor, COProject # 5027

Site InvestigationAtlas "E" Missile Site No. 12

Former FE Warren Air Force Base

BZ = breathing zoneHS = headspace

Well Completion Log MW-17A / Soil Boring Log SB-17(Page 1 of 2)

Date Started : 11/18/2008Date Completed : 11/18/2008Core Diameter : 3 1/4 inchDrilling Method : Hollow Stem AugerSampling Method : CME Continuous Sampler

Drilling Contractor : Drilling Engineers Inc.Northing Coord. : 1399897.657Easting Coord. : 3177300.934Survey By : Intermill Land SurveyingLogged By : Erik Whitmore, NWI

Dep

th in

Fee

t

0

5

10

15

20

25

30

Surf.Elev.

4943.77

4944

4939

4934

4929

4924

4919

US

CS

SM

SP

SP

grap

hic

DESCRIPTION

SILTY SAND, fine grained,sub angular silt ~15%, 4% small gravel. Brown 7.5 YR 4/4. dry to moist, soft. Backfill

SAND, fine grained, angular to sub angular, silt <5%. brown, 7.5 YR 4/4, moist, soft, Backfill

SAND, fine grained, 1-5% med-coarse, silt<5%, brown 7.5 YR 4/3, loose,

Sandstone, med to fine grained, yellow brown 10 YR 5/3, slightly weathered, soft, moist.

PID

(ppm

)

BZ = 0.0HS = 0.0

BZ = 0.0HS = 0.0

BZ = 0.0HS = 0.0

BZ = 0.0HS = 0.2

Lab

sam

ple

#

WellRemarks

All Well Screen and Riser pipe are 2-in. Sched. 40 PVC.

Grout = 94 lb type I/II Portland Cement, 3% bentonite

Seal 3/8 in. bentonite

TOC Elev =4943.53'

MW17A(Water Level on 12/12/08)

2 ft squareConcrete Pad

Grout

Seal

Flush Completion

Sched. 40Solid Riser

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Well Completion Log MW-17A / Soil Boring Log SB-17(Page 2 of 2)



Dep

th in

Fee

t

30

35

40

45

50

55

60

Surf.Elev.

4943.77

4914

4909

4904

4899

4894

4889

US

CS

SSSHSSSH

grap

hic

DESCRIPTION

Sandstone, Fox Hills,fine grained, ~20% silt, soft yellow brown 10 YR 5/3, slightly weathered, moist. Harder drilling from 32 feet.

Sandstone as above some dark red 2.5 YR 3/6 in cuttings, med. hard.

Sandstone, Fox Hills,fine to medium grained, <10% silt no visible bedding, hard from 40-42 feet, soft from 40-45, poor to moderate cementing, slightly weathered, no natural fractures visible, numerous drill breaks, yellow brown 10 YR 5/8.

Sandstone as above silt 10 to 15% from 49-50 feet. Core contains numerous drill breaks and spalling.

Sandstone as above, 5-10% silt, numerous drill breaks and spalling 10 YR 5/6 at 52.3 feet.

Shale, Pierre shale, dark grey2.5 YR 4/1, soft slightly weathered.Sandstone as above.Shale, Pierre shale as above.Sandstone as above <1 inch thickShale Pierre Shale, dark grey, 2.5 YR4/1, soft, becoming hard at 55.7 feet, slightly weathered.

PID

(ppm

)

BZ = 0.0HS = 0.2

BZ = 0.0HS = 0.2

BZ = 0.0HS = 0.6

BZ = 0.0HS = 0.0

BZ = 0.0HS = 0.3

BZ = 0.0HS = 0.1

BZ = 0.0HS = 0.0

BZ = 0.0HS = 0.1

Lab

sam

ple

#

WellRemarks

Screen Slot Width 0.010-in. continuous wire wrapped

Filter pack 10-20 Colorado Silica Sand

TOC Elev =4943.53'

MW17A(Water Level on 12/12/08)

Seal

Sand Pack

Sched. 40Solid Riser

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Well Completion Log MW-18 / Soil Boring Log SB-18(Page 1 of 2)



Dep

th in

Fee

t

0

5

10

15

20

25

30

Surf.Elev.

4949.11

4949

4944

4939

4934

4929

4924

US

CS

ML

SM

SM

SM

SM

SM

SM

grap

hic

DESCRIPTION

SANDY SILT, fine grained, soft, moist, dark yellowish brown 10 YR 4/4.

SILTY SAND, fine grained, loose, moist, dark yellowish brown 10 YR 5/4.

SILTY SAND, soft fine, dry, loose yellowish brown 10 YR 5/4.

SILTY SAND, fine, ~ 10% silt, soft, slightly moist, pale brown 10 YR 6/3.

SILTY SAND, as above, yellowish brown 10 YR 4/4, few sandstone pieces.

SILTY SAND, soft, fine, few sandstone pieces, moist, pale brown 10 YR 6/3.

SILTY SAND, as above.

PID

(ppm

)

BZ = 0.0HS = 0.0

BZ = 0.0HS = 0.4

BZ = 0.0HS = 0.2

BZ = 0.0HS = 0.4

BZ = 0.0HS = 0.4

BZ = 0.0HS = 1.5

BZ = 0.0HS = 1.8

Lab

sam

ple

#

Well Remarks




TOC Elev =4948.85'

MW18(Water Level on12/12/08)

2 ft squarecement pad

Grout

Seal (Bentonite)

Sand Pack

Flush Cover

Solid Casing

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Dep

th in

Fee

t

33

38

43

48

53

58

63

Surf.Elev.

4949.11

4916

4911

4906

4901

4896

4891

US

CS

grap

hic

DESCRIPTION

Sandstone, silt ~10%, soft fine, yellowish brown 10YR 5/6, moist, laminar.Sandstone, fine ~5-10% silt, hard, dry, mod. cement, bluish grey CLE YR 6/1.Sandstone as at 33', slight weathering from 37-33 feet.

Sandstone as at 33 feet.

Sandstone as above moderately weathered 7.5 YR 5/8, strong brown asd 10 YR 6/4 light yellow brownSandstone as at 33 feet laminar with few thin beds from 46 to 47 feet

Sandstone, 15-20% so;t, hard, dry, bluish grey GLE Y2 6/4.Sandstone, fine grained ~5% silt, soft, laminar beds light olive brown2.5 Y 5/3, moist to wet.Sandstone as at 47.8 feet.

slight weathering from 52-52.9 feet, strong, brown, 7.5 YR 5/8Sandstone as above.

Sandstone, fine, 5% silt ~5-10 % medium grained laminars beds, (few visible), yellowish brown 10 YR 5/4 slight weathering locally fines downward to 0 medium grains.Sandstone as above all finesSandstone as above yellowish brown, 10 YR 5/6 thin laminar beds from 60.5 to 60.91/2 inch bed of sandstone fine ~10 % silt, dry, bluish grey, GLEY2 6/4Sandstone as at 60.9, (Pierre Shale) interbedded with shaled dry black 10 YR 2/1Sandstone as above at 60.9

PID

(ppm

)

BZ = 0.0HS = 0.6

BZ = 0.0HS = 0.0

BZ = 0.0HS = 0.3

BZ = 0.0HS = 0.3

BZ = 0.0HS = 0.4

BZ = 0.0HS = 0.6

Lab

sam

ple

#12

-SB

18-3

812

-SB

18-5

512

-SB

18-6

1

Well Remarks



TOC Elev =4948.85'


Sand Pack

Solid Casing

Screen

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Drilling Contractor : Drilling EngineersNorthing Coord. : 1399870.612Easting Coord. : 3177507.731Survey By : Intermill Land SurveyingLogged By : Erik Whitmore, NWI

Dep

th in

Fee

t

0

5

10

15

20

25

30

Surf.Elev.

4958.18

4958

4953

4948

4943

4938

4933

US

CS

SM

SM

SC

SC

SM

grap

hic

DESCRIPTION

SILTY SAND to SANDY SILT, fine grained, sub granular, dry. Dark yellow brown 10 yr 5/4, loose.SANDY SILT, fine grained sand, subangular, loose, Dark yellow brown 10 yr 5/4, moist, sand ~10%, some clay (~5%).

CLAYEY SILT, minor sand <5%, soft, low plasticity, moist, yellow brown 10 YR 5/4.

As above, sand decreasing to <3%, <<1% small subrounded gravel noted.

SILTY SAND, fine grained, subangular, loose, moist brown 10 YR 4/3.

PID

(ppm

)

BZ = 0.0

BZ = 0.0HS = 0.2

BZ = 0.0HS = 0.4

BZ = 0.0HS = 0.6

BZ = 0.0HS = 1.4

BZ = 0.0HS = 0.8

BZ = 0.0HS = 1.2

Lab

sam

ple

#

Well Remarks




TOC Elev =4957.87'


2 ft squareCement Pad

Grout

Seal (Bentonite)

Sand Pack

Flush Cover

Solid Casing

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Drilling Contractor : Drilling EngineersNorthing Coord. : 1399870.612Easting Coord. : 3177507.731Survey By : Intermill Land SurveyingLogged By : Erik Whitmore, NWI

Dep

th in

Fee

t

30

35

40

45

50

55

60

Surf.Elev.

4958.18

4928

4923

4918

4913

4908

4903

US

CS

SM

grap

hic

DESCRIPTION

Sandstone, fine grained, hard laminar beds, slightly weathered dry, strong brown 7.5 YR 4/6. One inch shale at 31.1 feet soft dark blue grey GLEY2 4/1.Sandstone, fine to medium grained, slight weathering thin to laminar bedding, moist to dry, soft dark blue grey GLEY2 4/1.Sandstone, dark blue grey, slight weathering from 34.1 to 34.6 (fuel odor) tight grey, moist to dry.As above at 32 feet.Sandstone, fine to medium grained, slft laminar bedding, slightly weathered, yellowish brown 10 YR 5/6 with weathered dark yellowish brown 10 YR 4/6 thin elns of very dark brown 10YR 2/2 at 40 feet , no odor or PID reading,Sandstone, fine to medium grained, thin to laminar beds, dark yellowish brown, 10 YR 4/6 soft slightly weathered, wet.Shale/ siltstone, fine, hard, light grey 7.5 YR 7/1

Sandstone, fine to medium grained, thin to laminar beds, soft, slightly weathered, dark yellowish brown 10 YR 4/6.

Sandstone/ shale, fine graded, hard, unweathered, light bluish grey, GLEY2 7/1.Sandstone, laminar to thinly bedded medium grained soft to moderately hard, unweathered, wet, bluish grey, GLE2 5/1, increased silt.

Shale, Pierre Shale, dry hard, laminar beds, dark gray 2.5 YR 4/1 some laminare fine sand below 59 feet.

PID

(ppm

)

BZ = 0.0HS = 56.6

BZ = 0.0HS = 0.3

BZ = 0.0HS = 1.4

BZ = 0.0HS = 0.7

BZ = 0.0HS = 0.5

BZ = 0.0HS = 0.4

Lab

sam

ple

#12

-SB

19-3

412

-SB

19-4

512

-SB

19-5

8

Well Remarks



TOC Elev =4957.87'


Sand Pack

Solid Casing

Screen

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20.b

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Dep

th in

Fee

t

0

5

10

15

20

25

30

35

Surf.Elev.

4950.81

4951

4946

4941

4936

4931

4926

4921

US

CS

ML

SM

SM

grap

hic

DESCRIPTION

SANDY SILT, fine grained, soft, moist, dark yellowish brown 10 YR 4/4.

SILTY SAND, fine grained, loose, moist, dark yellowish brown 10 YR 4/4.

SILTY SAND, as above, dry yellowish brown 10 YR 5/4.

Sandstone, fine grained, ~10% silt, dry, soft, very pale brown 10 YR 7/4, unweathered, thin to laminar beds.

Sandstone, fine, 5-10% silt, soft, thin to laminar beds, slight weathering locally yellowish brown 10 YR 5/4, moist.

Sandstone, fine hard, dry, moderately cemented, laminar pale brown 10 YR 7/3Sandstone as at 20.5

Sandstone as at 27.4 feet.Sandstone as at 27.5 feet.Sandstone as at 27.4 feet, 10 to 15% silt.Sandstone as at 27.5 few black laminar beds of shale at 34 to 34.2 feet.

PID

(ppm

)

BZ = 0.0HS = 0.0

BZ = 0.0HS = 0.0

BZ = 0.0HS = 0.0

BZ = 0.0HS = 0.0

BZ = 0.0HS = 0.0

BZ = 0.0HS = 0.0

BZ = 0.0HS = 0.3

BZ = 0.0HS = 0.2

Lab

sam

ple

#12

-SB

20-1

512

-SB

20-3

5

Well Remarks




TOC Elev.=4950.59'

MW20(Water Level on 12/12/08)


Grout

Seal (Bentonite)

Sand Pack

Flush Cover

Solid Casing

Screen

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2002

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20.b

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Dep

th in

Fee

t

35

40

45

50

55

60

65

70

Surf.Elev.

4950.81

4916

4911

4906

4901

4896

4891

4886

US

CS

grap

hic

DESCRIPTION

Dry to slightly moist at 36.7 feetSandstone as at 34.2 feet.

Sandstone, fine, soft ~10% silt, moist, laminar beds, slight weathering locally, yellowish brown 10 YR 5/6.Sandstone, fine, ~10-15% silt, soft, moist, laminar beds, grey 10 YR 6/1 with weathering to 7.5 YR 5/8, becoming thinly bedded at 47.1 feet.

Sandstone, fine, 5-10% slightly weathered, laminar sor to moderately hard, dark yellowish brown 10 YR 5/3, moist.

Sandstone as above 2.5 Y5/3 light olive brown.

Sandstone, as at 50.9 feet slight weathering from 53 to 53.8 feet yellowish brown 10 YR 5/4.

Sandstone, fine grained, soft, gray 10 YR 6/1Shale, Pierre Shale, black, 10YR 2/1 hard to soft.

PID

(ppm

)

BZ = 0.0HS = 0.2

BZ = 0.0HS = 0.0

BZ = 0.0HS = 0.0

BZ = 0.0HS = 0.0

BZ = 0.0HS = 0.0

BZ = 0.0HS = 0.3

Lab

sam

ple

#12

-SB

20-3

512

-SB

20-6

2

Well Remarks



TOC Elev.=4950.59'


Sand PackScreen

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2002

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21.b

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Dep

th in

Fee

t

0

5

10

15

20

25

30

35

Surf.Elev.

4956.93

4957

4952

4947

4942

4937

4932

4927

US

CS

SM

SC

SC

SM

SM

SM

SMSM

sym

bol

DESCRIPTION

topsoil, SILTY SAND/SANDY SILT, dry, loose, yellow brown, 10 YR 5/6.

SANDY SILT, fine grained, sub angular, dry, loose, yellow brown 10YR 5/6.

SANDY SILT, as above slight clay content <5%.

SILTY SAND, and gravel dry to moist, soft, gravel ~15% sandstone fragments, yellow brown 10 YR 5/6.

SANDY SILT, loose, soft, moist, yellow brown, 10YR 5/6.SANDY CLAYEY SILT, moist, soft, sand <3%, clay <5%, yellow brown 10YR 5/6.

~6 inch layer of sandy gravel, fine sand, fine angular gravel, moistSILTY SAND, fine grained, soft moist brown yellow, 10 YR 6/6, some clay, <5%.Sandstone, fine grained, silt ~10 %, soft, slightly weathered, yellowish brown 10 YR 5/4. Weathering locally, to yellowish red 5 YR 4/6.One inch lens of sand, grey with dark reddish brown staining 5 YR 2.5/2.Sandstone, fine grained !10% silt, 10 YR 5/6 yellow brown, slight weathering locally, thin to laminar bedding.

PID

(ppm

)

BZ = 0.0HS = 0.1

BZ = 0.1HS = 0.0

BZ = 0.0HS = 0.4

BZ = 0.0HS = 0.0

BZ = 0.0HS = 1.3

BZ = 0.0HS = 0.2

BZ = 0.0HS = 0.0

BZ = 0.0HS = 0.0

Lab

sam

ple

#12

-SB

21-3

1

Well Remarks




TOC Elev.=4956.47'



Grout

Seal

Sand Pack

Flush Cover

Solid Casing

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2002

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or







Dep

th in

Fee

t

35

40

45

50

55

60

65

70

Surf.Elev.

4956.93

4922

4917

4912

4907

4902

4897

4892

US

CS

sym

bol

DESCRIPTION

minor staining at 35.8 feet, black 10 YR 2/1

Sandstone as above with 1 inch thick layer of siltstone at 38.5 feet with iron oxide staining.

Sandstone, <20 % silt hard, dry, light grey 10 YR 7/1 at 47.5 to 48 feet, fine grained, thin to laminar beds, soft moist to wet, yellow Brown 10 YR 5/6, slight weathering locally.

Bed thickness incresed to thinly bedded from 48 to 50.5 feet then returns to laminer with few thin beds.

Sandstone, fine grained, soft, ~5 to 10 % silt grey, GREY 2 5/1

Shale, Pierre Shale, ~ 4 inch layer of ahrd dry shaleSandstone, as above.Shale as aboveSandstone, as above.

SILTY SANDSTONE to Sandy SILTSTONE, Pierre Shale, ~30% silt, very hard, bluish gray GLEY2 5/1, dry

PID

(ppm

)

BZ = 0.0HS = 0.0

BZ = 0.0HS = 1.4

BZ = 0.0HS = 2.4

BZ = 0.0HS = 1.0

BZ = 0.0HS = 0.0

BZ = 0.0HS = 0.0

BZ = 0.0HS = 0.0

Lab

sam

ple

#12

-SB

21-4

512

-SB

21-5

512

-SB

21-6

012

-SB

21-6

5

Well Remarks



TOC Elev.=4956.47'


Sand Pack

Solid Casing

Screen

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2002

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Drilling Contractor : Drilling Engineers IncNorthing Coord. : 1399862.107Easting Coord. : 3177712.703Survey By : Intermill Land SurveyingLogged By : Erik Whitmore, NWI

Dep

th in

Fee

t

0

5

10

15

20

25

30

35

40

Surf.Elev.

4961.61

4962

4957

4952

4947

4942

4937

4932

4927

US

CS

ML

SM

GM

grap

hic

DESCRIPTION

SANDY SILT, fine grained,slightly moist, loose, brown, 7.5 YR 4/4.

SILTY SAND, fine grained,loose, dry, dark yellowish brown, 10 YR 4/4.

SILT SANDY GRAVEL, dry, loose, gravel angular to sub rounded, shale and sandstone, fine sand, ~15% silt, 20 % sand, very pale brown 10 YR 7/3

Sandstone, fine grained, ~5% silt, soft, dry, very pale brown 10 YR 7/3, slightly weathered.

0.5 inch thick layer of clay, soft, moist, very dark grey 10 YR 3/1Sandstone, as at 19 feet, moist, with interbedded clay shale as above.Sandstone as above with a 1 inch thick hard shale layer at 24.2 feet and a 3 inch layer at 25.4.Sandstone, fine grained ~5%silt, soft, thinly to laminar beds, moist yellowish brown 10 YR 5/4 slight weathering at 26.1 to 26.2 (strong brown 10 YR 5/6)Sandstone, fine grained, ~5% silt, soft, laminar bedding, yellowish brown 10 YR 5/4, moist, slight weathering locally.Sandstone, as above moist with laminar shale interbeds from 34.1 to 34.4 feet. thin shale interbed from 34.8 to 34.85 and 35 to 35.2.Sandstone, fine grained, ~5% silt laminar bedding slightly weathered, soft, dark yellowish brown, 10 YR 8/4. ~10% med grained below 37 feet.

PID

(ppm

)

BZ = 0.0HS = 0.0

BZ = 0.0HS = 0.3

BZ = 0.0HS = 0.3

BZ = 0.0HS = 0.0

BZ = 0.0HS = 0.3

BZ = 0.0HS = 0.0

BZ = 0.0HS = 0.0

BZ = 0.0HS =

BZ = 0.0HS = 0.0

Lab

sam

ple

#12

-SB

22-2

212

-SB

22-2

9

Well Remarks





TOC Elev.=4961.38'


2 ft sqCement Pad

Grout

Seal (Bentonite)

Sand Pack

Flush Cover

Solid Casing

Screen

03-0

3-20

09 C

:\Pro

gram

File

s\m

tech

2002

\ace

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22.b

or







Drilling Contractor : Drilling Engineers IncNorthing Coord. : 1399862.107Easting Coord. : 3177712.703Survey By : Intermill Land SurveyingLogged By : Erik Whitmore, NWI

Dep

th in

Fee

t

40

45

50

55

60

65

70

75

80

Surf.Elev.

4961.61

4922

4917

4912

4907

4902

4897

4892

4887

US

CS

grap

hic

DESCRIPTION

Sandstone, as above, light olive brown 2.5 Y 5/4

Sandstone, fine grained, laminar beds, hard, moderately cemented bluish grey GREY2 5/1 dry.Sandstone, as at 43 feet laminar bedsSandstone, fine grained, soft, laminar beds, moist, ~5% silt, olive brown 2.5 Y 4/3, slight weathering locally.

Sandstone, fine grained, 10 to 15% silt, hard, dry, greyShale

Silty Sandstone to Sandy Shale, Pierre Shale, soft to moderately hard, moist, slightly cemented 73 to 73.4 feet, grey GLE Y2 5/1 unweathered laminar beds.

PID

(ppm

)

BZ = 0.0HS = 0.0

BZ = 0.0HS = 6.1

BZ = 0.0HS = 15.8

BZ = 0.0HS = 40.7

BZ = 0.0HS = 15.9

BZ = 0.0HS = 7.7

BZ = 0.0HS = 1.3

Lab

sam

ple

#12

-SB

22-5

812

-SB

22-6

4

Well Remarks


TOC Elev.=4961.38'


Sand PackScreen

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3-20

09 C

:\Pro

gram

File

s\m

tech

2002

\ace

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23.b

or







Dep

th in

Fee

t

0

5

10

15

20

25

30

Surf.Elev.

4953.6

4954

4949

4944

4939

4934

4929

US

CS

SM

SM

SM

ML

GR

AP

HIC

DESCRIPTION

SILTY SAND, fine grained, dry, then moist, loose, dark yellowish brown, 10 YR 4/4.

SANDY SILT, <5% clay, dry, loose, light yellowish brown, 10 YR 6/4.

SANDY SILT, ~10% clay, moist, soft, yellowish brown, 10YR 5/4.

CLAYEY SILT, <5% sand, soft, moist, low plasticity, dark yellowish brown, 10 YR 4/4.

Sandstone, soft, fine grained, 10 to 15% silt, yellowish brown, 10 YR 5/6, laminar bedded, unweathered, few sandstone gravels, moist.Sandstone as above with slight weathering at ~27 feet, slight increase in silt ~15%, moist.

PID

(ppm

)

BZ = 0.0HS = 0.0

BZ = 0.0HS = 0.6

BZ = 0.0HS = 1.1

BZ = 0.0HS = 1.0

BZ = 0.0HS = 0.1

BZ = 0.0HS = 0.2

BZ = 0.0HS = 0.3

Lab

sam

ple

#12

-SB

23-2

812

-SB

23-3

2

Well Remarks



TOC Elev.=4953.29'


2 ft squarecement pad

Grout

Seal (Bentonite)

Sand Pack

Flush Cover

Solid Casing

Screen

03-0

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09 C

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File

s\m

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2002

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23.b

or







Dep

th in

Fee

t

32

37

42

47

52

57

62

Surf.Elev.

4953.6

4922

4917

4912

4907

4902

4897

US

CS

GR

AP

HIC

DESCRIPTION

Sandstone with grey lenses 7.5 YR 6/1 from 32.1 to 32.3 fine grained, 10% silt, soft, thin to laminar bedding, slightly weathered 5% medium grained, yellowish brown, 10 YR 5/6, moist,

Sandstone, soft, 15 to 20% silt, soft, grey 10 YR 6/1 then sandstonas at 34 feet with thin and laminar beds slightly weathered, moist.

Shale, hard, laminar beds, ~10% sand, fine grained, moderately cemented, slightly weathered, dry, light grey 10 YR 7/1.Sandstone as at 37 feet, localized black staining deposits at 43.9 feet.light browish grey 10 YR 6/2 (staining?) at 44.1 to 45.5Shale, hard dry to slightly moist, slightly weathered light grey 10 YR 7/1.Sandstone, as at 42 feet with few thin beds.

Shale black very soft, dark grey (black 10 YR 2/1)Sandstone, fine grained, laminar bedding, ~10% silt, soft, slight weathering locally, moist, 10 YR 5/6 yellow brown 1 mm beds of silt at 51 to 51.2 feet interbedded with sandstone.

Sandstone as at 50.1 feet.

Shale, Pierre Shale, moderately hard, ~10-15% fine sand, grey 10 YR 6/1, slightly moist, drying downward, (dry at 59 feet).Shale/Sandstone, moist, grey GLEY2 5/1.

PID

(ppm

)

BZ = 0.0HS = 0.3

BZ = 0.0HS = 0.8

BZ = 0.0HS = 1.4

BZ = 0.0HS = 9.7

BZ = 0.0HS = 2.2

BZ = 0.0HS = 2.4

Lab

sam

ple

#12

-SB

23-3

212

-SB

23-4

512

-SB

23-5

2

Well Remarks


Filter pack 10-20 Colorado Silica Sand-10test

TOC Elev.=4953.29'


Sand Pack

Screen

03-0

3-20

09 C

:\Pro

gram

File

s\m

tech

2002

\ace

geo\

24.b

or






Drilling Contractor : Dilling Engineers Inc.Northing Coord. : 1400073.469Easting Coord. : 3177691.776Survey By : Intermill Land SurveyingLogged By : Erik Whitmore, NWI

Dep

th in

Fee

t

0

5

10

15

20

25

30

35

40

Surf.Elev.

4951.92

4952

4947

4942

4937

4932

4927

4922

4917

US

CS

SM

SM

SM

ML

SS

SM

GR

AP

HIC

DESCRIPTION

SILTY SAND, fine grained, dry, loose, dark yellowish brown, 10 YR 4/4 few (<1%) small angular gravel.

SANDY SILT, ~5% clay, dry loose, light yellowish brown, 10 YR 6/4.

SANDY SILT, ~10% clay, moist, soft, yellowish brown, 10 YR 5/4.

CLAYEY SILT, <5% fine sand, soft, slightly plastic, yellowish brown.

Sandstone, fine grained, soft, moist slight weathering locally, 10 to 15% silt, thin to laminar beds.

Sandstone as above light brownish grey 10 YR 6/2.Sandstone, fine grained, moist, soft, highly to moderately weathered from 24.3 to 25 feet, strong brown 7.5 YR 5/8 interbedded with slightly weathered light brownish grey 10 YR 6/2Shale, hard dry grey 10 YR 4/1Sandstone, as at 24 feet.

Sandstone, fine grained, moist, thin to laminar bedding, slight to moderate weathering, strong brown 7.5 YR 4/6.Sandstone as above, light brownish grey 10 YR 6.2.Sandstone as at 29.8 feet.Sandstone, fine grained, dry, hard, well cemented, grey, 2.5 YR 6/1Sandstone, fine moist hard, yellowish brown 10 YR 5/4.Sandstone as at 33 feet, moderately hard.SILTY SAND, fine grained, moist, slightly plastic, soft, some clay(<3%)

PID

(ppm

)

BZ = 0.0HS = 0.2

BZ = 0.0HS = 1.2

BZ = 0.0HS = 1.6

BZ = 0.0HS = 1.6

BZ = 0.0HS = 2.6

BZ = 0.0HS = 1.8

BZ = 0.0HS = 1.9

BZ = 0.0HS = 1.1

BZ = 0.0HS = 0.6

BZ = 0.0HS = 0.5

Lab

sam

ple

#12

-SB

24-2

412

-SB

24-3

3

Well Remarks



Seal 3/8 in. Bentonite


TOC Elev.=4951.55'


2' Cement Pad

Grout

Seal

Sand Pack

Flush Cover

Solid Casing

Screen

03-0

3-20

09 C

:\Pro

gram

File

s\m

tech

2002

\ace

geo\

24.b

or






Drilling Contractor : Dilling Engineers Inc.Northing Coord. : 1400073.469Easting Coord. : 3177691.776Survey By : Intermill Land SurveyingLogged By : Erik Whitmore, NWI

Dep

th in

Fee

t

40

45

50

55

60

65

70

75

80

Surf.Elev.

4951.92

4912

4907

4902

4897

4892

4887

4882

4877

US

CS

SM

GR

AP

HIC

DESCRIPTION

Sandstone, fine grained, soft to moderately hard, thinly bedded to laminar, slightlyweathered, ~5 to 10% silt, yellowish brown, 10 YR 5/8.

Sandstone, hard, laminar beds, well cemented, fine grained pale brown, 10 YR 6/3.SILTY SAND, ~5 to 10% silt, soft, moist, yellowish brown 10 YR 5/4, fine grained, low plasticity.

Sandstone, fine grained, laminar bedding, soft to moderately hard, dark yellowish brown 10 YR 4/6 slightl weathering locally grey layers ~1 inch thick at 53.1 and 53.3 feet.

Sandstone, fine to medium grained, hard, dry, well cemented grey CLEY2 7/1.Sandstone, as at 50 feet.Sandstone, as at 54 feet.Sandstone, as at 50 feet, 3 inch thick lens of grey sand, GLEY@ 4/1.fine grained,

Sandstone, fine grained, soft, silt ~5%, slight weathering locally, olive brown 2.5 Y 4/4 moist laminar bedding with few thin beds at 63.2 to 63.6 feet.

Sandstone, fine grained, soft, ~5 to 10% silt, moist, drying slightly downward, grey GLEY2 5/1 thin to laminar beds of olive brown sandstone 2.5 Y 4/4 at 69.8 to 69.9 feet.

Sandstone, fine grained, as above with interbedded shale as at 72.6 feet.Shale, Pierre Shale, hard with soft layers at 73 to 73.6, dark blueish grey GLEY2 4/1.

PID

(ppm

)

BZ = 0.0HS = 0.5

BZ = 0.0HS = 0.0

BZ = 0.0HS = 0.9

BZ = 0.0HS = 0.6

BZ = 0.0HS = 0.6

BZ = 0.0HS = 0.5

BZ = 0.0HS = 0.4

BZ = 0.0HS = 0.5

Lab

sam

ple

#12

-SB

24-4

9

Well Remarks


TOC Elev.=4951.55'


Sand PackScreen

Well Permits, Colorado Division of Water Resources

Well Surface Survey Results

Monitoring Well Development Logs and Photos

Figure 1. Pre- and post-development water at MW-17A (12-4-2008).

Figure 2. Pre- and post-development water at MW-18 (11-25-2008).

Figure 3. Pre- and interim development water at MW-19 (11-24-2008).

Figure 4. Post-development water at MW-19 (11-25-2008).

Figure 5. Pre-, interim and post-development water at MW-20 (12-2-2008).

Figure 6. Pre- and post-development water at MW-21 (12-2-2008).

well completion diagrams and soil boring logs€¦ · 03-03-2009 c:\program...

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