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Jan 10th, 2023
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Joined: Dec 2017
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OP
Joined: Dec 2017
Posts: 3 |
I had a soil boring test done to determine if a certain location on my property would be suitable to hold water for a pond about 1/4-1/2 acre in size and 8'-10' deep. I was wondering if any of you could help me interpret these results?
L.L. = Liquid Limit; P.I. = Plasticity Index
0-2' L.L. is 38%; P.I. is 14 (dark brown silty clay)
2'-4' L.L. is 31%; P.I. is 10 (dark brown and black silty clay)
4'-6' L.L. is 37%; P.I. is 14 (reddish brown silty clay)
6'-8' L.L. is 37%; P.I. is 15 (reddish brown silty clay)
8'-10' L.L. is 39%; P.I. is 17 (reddish brown silty clay)
10'-12' No data
13'-15' L.L. is 35%; P.I. is 12 (reddish brown silty clay)
Boring terminated at 15'.
Last edited by JBM; 12/19/17 04:12 PM.
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Joined: Jan 2006
Posts: 16,051 Likes: 277
Moderator Lunker
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Moderator Lunker
Joined: Jan 2006
Posts: 16,051 Likes: 277 |
JBM, welcome to Pond Boss. I understand PI but not LL. According to Mike Otto's book Just Add Water you should have a PI between 13 and 30.
Mike mentions several "field tests".
Moisten it and make a ball about the size of a golf ball. Drop it from about shoulder height. If it breaks apart, add more moisture and try again. If it passes the ball test, get a handful and start rolling it out like a cylinder. If it holds together when it gets pencil size, it ought to make a dam.
It's not about the fish. It's about the pond. Take care of the pond and the fish will be fine. PB subscriber since before it was in color.
Without a sense of urgency, Nothing ever gets done.
Boy, if I say "sic em", you'd better look for something to bite. Sam Shelley Rancher and Farmer Muleshoe Texas 1892-1985 RIP
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Joined: Dec 2017
Posts: 3
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OP
Joined: Dec 2017
Posts: 3 |
Dave, thank you for the response. Very helpful!
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Joined: Apr 2019
Posts: 111 Likes: 1
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Joined: Apr 2019
Posts: 111 Likes: 1 |
Hey JBM - who did your soil boring? I'm looking at having Louisiana Testing come out to my place in Lafayette but the price was steeper than I expected.
Kris 
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