2890.3300 SOIL BORING ADVANCEMENT.
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Subpart 1.
General.
Costs for soil boring advancement are as described in this part.
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Subp. 2.
Hollow-stem auger.
Hollow-stem auger drilling in sand, silt, or clay, with continuous sampling. Items A to D list the depth of the boring and the maximum cost per boring:
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B.
26 - 50 feet, $932 plus $32 per foot beyond 25 feet;
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C.
51 - 100 feet, $1,730 plus $56 per foot beyond 50 feet; and
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D.
over 100 feet, $4,525 plus $70 per foot beyond 100 feet.
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Subp. 3.
Mud or air rotary.
Mud or air rotary drilling in limestone or hard rock, with surface sampling only. Items A to D list the depth of the boring and the maximum cost per boring:
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A.
0 - 25 feet, $1,697;
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B.
26 - 50 feet, $1,697 plus $53 per foot beyond 25 feet;
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C.
51 - 100 feet, $3,028 plus $62 per foot beyond 50 feet; and
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D.
over 100 feet, $6,090 plus $80 per foot beyond 100 feet.
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Subp. 4.
Air coring.
Air coring of limestone or hard rock with continuous sampling. Items A to D list the depth of the boring and the maximum cost per boring:
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A.
0 - 25 feet, $1,863;
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B.
26 - 50 feet, $1,863 plus $61 per foot beyond 25 feet;
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C.
51 - 100 feet, $3,373 plus $63 per foot beyond 50 feet; and
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D.
over 100 feet, $6,489 plus $89 per foot beyond 100 feet.
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Subp. 5.
Rotosonic drilling.
Rotosonic drilling in sand, silt, or clay, with continuous sampling. Items A to D list the depth of the boring and the maximum cost per boring:
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A.
0 - 25 feet, $1,931;
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B.
26 - 50 feet, $1,931 plus $79 per foot beyond 25 feet;
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C.
51 - 100 feet, $3,894 plus $85 per foot beyond 50 feet; and
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D.
over 100 feet, $8,153 plus $111 per foot beyond 100 feet.
History:
28 SR 383; L 2010 c 241 s 4; MS s 115C.07 subd 3 paragraph (f); 28 SR 383; L 2010 c 241 s 4; MS s 115C.07 subd 3 paragraph (f)