2001-12-11_PERMIT FILE - C1981010A ‎(6)‎

• Permit No: C1981010A
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Doc Name: Design & Construction for GW Monitoring Wells
• Section_Exhibit Name: APPENDIX V PART C
• Media Type: D
• Archive: Yes

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_ ~c.Fre-C~,~~~~rn company, /n~ .
~'~f~~ `', WATER SUPPLY SERVICES
~ WATER WELLS • LAYNE PUMPS • TEST DRILLING • WATER TREATMENT EQUIPMENT
~ {SOI Ea ~• IIiH D•e••,, Ce{erede 80]]1 AC ]0] 733-i7{1
~~
July 2, 1975 G ~ _ ~
Utah International
318 West Victory way
Craig, Colorado 81625
Atten: P. H. Schipke
Gentlemen:
Enclosed please find one copy of drillers log, one copy of pumping
test with recovery, one copy of drawdown curve and one copy of
recovery curve. Plus a pump curve showing the pump we propose to
install.
~ The well was drilled to a depth of 1,132 ft. with the Twenty Mile
Sands starting at approximately 955 ft. The screen starts at 1,012 ft.
- and extends 120 ft. to 1,132 ft. The well was pumped continuously for
24 hours at 80 gpm. Drawdown at the end of 24 hours was 463 ft.
Using these figures we come up with a specific capacity of .22. Using
1 hour drawdown or .17 using the entire drawdown. Figuring-the
transmissibility on both drawdown and recovery we come up with a
transmissibility of 84 gallons per day per foot, and 77 gallons per
day per foot. So it looks like 75 gpm is a maximum output that should
be expected from the well. If a 75 gpm pump is desired, the anticipated
24 hour drawdown for 75 gpm is approximately 431 ft. The static level
of 36 ft. equals a 24 hour pumping level of 467 ft. Adding a 25$ factor
• for continuous pumoing we come up with a 584 ft. pumping level. For
head design purposes we would use a 500 ft. pumping level plus 50 lbs.
at the surface, or 115 ft. for a total head of 615 ft. at 75 gpm.
The pump that comes the closest to meeting these conditions is a Reda
38DSSE, set 600 ft. on 3" black pipe with 600 ft. of rro. 8 cable plus -
airline and fittings. The total for this pump installed is 510,090.00.
If you want to stay with the 50 gpm pump that we originally talked
' about, we would anticipate a drawdown of 287 ft. plus 36 ft. static,
plus 115 ft. above the ground for a design condition of approximately
450 ft. The pump best suited for these conditions is a 33DSOP, and
would be set 900 ft. on 2" galvanized pipe with 400 ft. of Mo. 12
3-wired jacketed cable, airline and fittings. Furnished and installed
for the sum of $6,866.00.
CANSAS CITT • WICNIiA • GA{DEN CIiT • OMAHA • AMES • AU{O{A • ST. LOUIS • DENVE{