Well Log MAF M-01 (Attch 5).pdf

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Water Well Treatment
Solicitation number
FA462625Q0056
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This Montana Well Log Report documents the drilling of a water well for Missile Alert Facility MIKE-01, located in Fergus County, Montana. The well was completed on May 7, 2018, using a rotary drilling method, with a total depth of 1,175 feet. The borehole traverses multiple geological layers, including poorly graded gravel, clay shale, sandstone, and interbedded rock formations. The well construction involved 8.6-inch and 12.8-inch steel casing, with a 6-inch stainless steel screen installed from 1,147.2 to 1,167.2 feet.

Well testing revealed a static water level of 79.9 feet, with an air test showing 8 gallons per minute at 1,120 feet for 24 hours and a recovery time of 96 hours. A pump test demonstrated a 3.66 gallons per minute rate with 304.11 feet of drawdown after 17 hours of pumping. The well is owned by 341 CES/CEM at Malmstrom Air Force Base and is intended for domestic use and fire protection purposes. The geological composition is primarily characterized by clay shales, sandstones, and interbedded rock layers with varying degrees of weathering and cementation.

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Installation Perimeter Access Control (Attch 2).pdf PDF
Statement of Work (Attch 1).pdf PDF
Solicitation - FA462625Q0056.pdf PDF
WD (Attch 3).pdf PDF
Environmental Protection (Attch 4).rtf RTF text file

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MONTANA WELL LOG REPORT Other Options

This well log reports the activities of a licensed Montana well driller, serves as the official record of work done within the borehole and casing, and describes the amount of water encountered. This report is compiled electronically from the contents of the Ground Water Information Center (GWIC) database for this site. Acquiring water rights is the well owner's responsibility and is NOT accomplished by the filing of this report.

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Site Name: MISSILE ALERT FACILITY MIKE-01 GWIC Id: 298138

Section 1: Well Owner(s)

1) 341 CES/CEM (MAIL)

39 78TH ST N

MALMSTROM AFB MT 50492 [05/07/2018]

2) MALMSTROM AFB (WELL)

71185 US HWY 87

MOORE MT 59464 [05/07/2018]

Section 2: Location Township Range Section Quarter Sections

15N 16E 36 NW¼ SE¼ SE¼ SE¼

County Geocode

FERGUS

Latitude Longitude Geomethod Datum

47.013475 -109.631228 MAP WGS84

Ground Surface Altitude Ground Surface Method Datum Date

Addition Block Lot

Section 3: Proposed Use of Water

DOMESTIC (1)

FIRE PROTECTION (2)

Section 4: Type of Work Drilling Method: ROTARY Status: NEW WELL

Section 5: Well Completion Date Date well completed: Monday, May 7, 2018

Section 6: Well Construction Details Borehole dimensions From To Diameter

0 370 15.5 370 1122 12.3

1122 1175 8 Casing

From To Diameter Wall Thickness

Pressure Rating Joint Type

-2 1122 8.6 0.25 WELDED A53B STEEL

-1 370 12.8 0.25 WELDED A53B STEEL

1118 1175 6.6 0.25 WELDED STAINLESS STEEL

Completion (Perf/Screen)

From To Diameter # of Openings

Size of Openings Description

1147.2 1167.2 6 0.02 SCREEN-CONTINUOUS-

STAINLESS

Annular Space (Seal/Grout/Packer)

From To Description Cont.

Fed?

0 1122 CEMENT Y

1118 1118 K-PACKER

1146 1146 K-PACKER

Section 7: Well Test Data

Total Depth: 1175 Static Water Level: 79.9 Water Temperature:

Air Test *

8 gpm with drill stem set at 1120 feet for 24 hours.

Time of recovery 96 hours.

Recovery water level 79.9 feet.

Pumping water level feet.

Pump Test *

Depth pump set for test 1120 feet.

3.66 gpm pump rate with 304.11 feet of drawdown after 17 hours of pumping.

Time of recovery 10 hours.

Recovery water level 85.87 feet.

Pumping water level feet.

* During the well test the discharge rate shall be as uniform as possible. This rate may or may not be the sustainable yield of the well. Sustainable yield does not include the reservoir of the well casing.

Section 8: Remarks

Section 9: Well Log Geologic Source Unassigned From To Description

0 59 POORLY GRADED GRAVEL WITH SAND AND COBBLES

(GP)

59 997

CLAY SHALE, DARK GREY, SOFT ROCK, POORLY

BONDED, MODERATELY TO SEVERELY WEATHERED,

BEDDED, FISSILE. THIN BEDS SILTSONE/MUDSTONE

@155'. BENTONITE @230'. GREY/GREEN SANDSTONE

@470, BENTONITE 522'-650,' 698-725, 740-800, 800-818,

830.

997 1057

SANDSTONE/SHALE. BROWN, SOFT ROCK, POORLY

CEMENTED, BEDDED INTERCALATED SANDSTONE

AND SHALE

1057 1105

CLAY SHALE/ GREY/MAROON/OLIVE, MEDIUM HARD

ROCK, MODERATELY TO WELL BONDED, SLIGHTLY

WEATHERED, BEDDED FISSILE, INTERBEDDED WITH

LENSES OF BENTONITE. BENTONITE LENSES 1065-

1085, 1090-1100

1105 1110

SANDSTONE, GREY "SALT AND PEPPER APPEARANCE"

MEDIUM HARD ROCK, MODERATELY TO WELL

CEMENTED, SLIGHTLY WEATHERED, BEDDED, FINE

GRAINED

1110 1122

CLAY SHALE. ORANGE, SOFT ROCK, POORLY BONDED,

MODERATELY WEATHERED, BEDDED, FISSILE,

INTERBEDDED WITH LENSES OF BENTONITE

1122 1165

SANDSTONE, GREY GREY "SALT AND PEPPER

APPEARANCE" MEDIUM HARD ROCK, MODERATELY TO

WELL CEMENTED, SLIGHTLY WEATHERED, BEDDED,

FINE GRAINED, SOME ORANGE SHALEY INTERBEDS

4/25/25, 8:16 AM Montana's Ground-Water Information Center (GWIC) | Site Report | V.11.2025 https://mbmggwic.mtech.edu/reports/SiteSummary.asp?gwicid=298138&agency=mbmg&session=1309597& 1/2 https://mbmggwic.mtech.edu/menus/menuData.asp http://mslservices.mt.gov/Geographic_Information/Applications/DigitalAtlas/Default.aspx?basemap=USATOPO&search=coordinatesdd&latDecimalDegrees=47.013475&lonDecimalDegrees=-109.631228&locinfo=checked&map=17& https://www.google.com/maps/place/47.013475,-109.631228/@47.013475,-109.631228,17z

1165 1175 CLAY SHALE. ORANGE, SOFT ROCK, POORLY BONDED,

MODERATELY WEATHERED BEDDED, FISSILE

Driller Certification All work performed and reported in this well log is in compliance with the Montana well construction standards. This report is true to the best of my knowledge.

4/25/25, 8:16 AM Montana's Ground-Water Information Center (GWIC) | Site Report | V.11.2025 https://mbmggwic.mtech.edu/reports/SiteSummary.asp?gwicid=298138&agency=mbmg&session=1309597& 2/2

Casing:
Driller Certification:

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