Minnesota Administrative Rules

2890.3300 SOIL BORING ADVANCEMENT.

Subpart 1.

General.

Costs for soil boring advancement are as described in this part.

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:

A.

0 - 25 feet, $1,128;

B.

26 - 50 feet, $1,128 plus $39 per foot beyond 25 feet;

C.

51 - 100 feet, $2,093 plus $68 per foot beyond 50 feet; and

D.

over 100 feet, $5,476 plus $85 per foot beyond 100 feet.

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:

A.

0 - 25 feet, $2,054;

B.

26 - 50 feet, $2,054 plus $64 per foot beyond 25 feet;

C.

51 - 100 feet, $3,664 plus $75 per foot beyond 50 feet; and

D.

over 100 feet, $7,369 plus $97 per foot beyond 100 feet.

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:

A.

0 - 25 feet, $2,254;

B.

26 - 50 feet, $2,254 plus $74 per foot beyond 25 feet;

C.

51 - 100 feet, $4,081 plus $76 per foot beyond 50 feet; and

D.

over 100 feet, $7,852 plus $108 per foot beyond 100 feet.

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:

A.

0 - 25 feet, $2,336;

B.

26 - 50 feet, $2,336 plus $96 per foot beyond 25 feet;

C.

51 - 100 feet, $4,711 plus $103 per foot beyond 50 feet; and

D.

over 100 feet, $9,865 plus $134 per foot beyond 100 feet.

Statutory Authority:

MS s 115C.07

History:

28 SR 383; L 2010 c 241 s 4; MS s 115C.07 subd 3 paragraph (f)

Published Electronically:

December 12, 2025