Table Name | Field Name | Begin Column | Definition | Valid Values | Descriptions
meekgpits.shp | Type |  | Text, 16 | Gravel Pit | Gravel Pit
|  |  |  | Sand Pit | Sand Pit
| Source |  | Text, 16 | Ex: MNDOT ASIS, Air photo, Field Work, Soil Survey, Topographic Map, etc… | This is where the gravel pit location came from or was observed (ex: soil - found on the soil map).
| Pit_q_id |  | Number, 6,0 | Ex: 1,2,3,4,5,6,7.... 341, 342, 343, 344 | Gravel pit unique ID (1-215).
| Asis_numbr |  | Number, 9,0 | Ex: 0, 47035, 47036, 47070, etc… | Aggregate Source Information System Number (MN/DOT Database). An empty field means that is does not have an ASIS number. 47xxx refers to Meeker County (47) and xxx refers to the pit number. Use this field to join with dot_qual.dbf for the gravel pits that list the Source as “ASIS”.
| Size |  | Text, 8 | Small | Refers to the relative size of the pit or quarry. Small pits are generally less than a couple of acres or so. These pits are usually used by private landowners or for small jobs.
|  |  |  | Medium | Generally less than 10 acres in size. These pits are used by landowners and for small construction jobs, They are generally used for short periods of time by contractors.
|  |  |  | Large | These pits are generally greater than 10 acres and are typically used by commercial aggregate operators.
| Thickmod |  | Text, 1 | Ex: ~, >, < | Modifiers to express numeric approximations observed for deposit thickness: ~ means approximate, < means less than, and > means greater than.
| Thickval |  | Number, 4 | Ex: 5, 10. 15… | Gives a value for thickness.
| Wattabmod |  | Text, 1 | Ex: ~, >, < | Modifiers to express numeric approximations for the depth to the water table: ~ means approximate, < means less than, and > means greater than.
| Wattabval |  | Text, 4 | Ex: 5, 10. 15… | Describes the depth to the water table within a pit or quarry. If 20 feet of gravel was exposed and there was no water table encountered, then >20 were used.
| Thickness |  | Text, 15 | Ex: >10, >20, >25, 10, 25, <20, etc | The thickness of the deposit expressed in combination with a modifier.
| Watertable |  | Text, 15 | Ex: >10, >20, >25, 10, 25, <20, etc | The depth of the water table expressed in combination with a modifier.
| Status_a |  | Text, 16 | Active | Refers to the status of the gravel pit at the time of mapping. Active indicates that the pit is either being actively mined or used for other mining related usage like stockpiling material.
|  |  |  | Inactive | Refers to a pit that does not appear to have been active for some time.
|  |  |  | Reclaimed | The pit has been passively or actively reclaimed. Status_b further describes type of reclamation or what it ha
| Dom_litho |  | Text, 20 | Des Moines Lobe | Sand and gravel associated with a glacier called the Des Moines Lobe. These sands and gravels contain deleterious rocks (like shale, iron oxides, and soft limestones) that can degrade the quality of the deposit.
|  |  |  | Superior Lobe | Sand and gravel associated with a glacier called the Superior Lobe. The quality of these deposits tends to be good to very good due to the rock types found within the deposits (basalt, granite, gabbro). Also, these deposits have undergone some degree of mixing with rock types associated the Rainy Lobe (granites).
|  |  |  | Undetermined | The source of the sand and gravel could not be determined. This is primarily due to the deposit could not be access and was not observed and the surrounding geology is too complex to extrapolate the source.
| Dom_text |  | Text, 25 | Gravel with Sand | An approximation to characterized the amount of gravel vs. sand within a deposit. These approximations are based on field observations and not laboratory tested. Gravel with sand indicates the deposit contains a very significant portion (by percent weight) of gravel and the deposit has an overall very coarse texture.
|  |  |  | Gravel and Sand | Indicates the deposit contains a large amount of gravel by percent weight and has coarse texture.
|  |  |  | Sand and Gravel | Indicates the deposit has approximately equal or slightly more sand than gravel by percent weight.
|  |  |  | Sand with Gravel | Indicates the deposit has more overall more sand than gravel by percent weight and has an overall fine texture
|  |  |  | Sand occasional Gravel | Indicates the deposit contains mostly sand with few gravel-sized rocks and has a fine texture.
|  |  |  | Sand | Indicates the deposit is composed of sand and has a fine texture.
|  |  |  | Undetermined | The texture of the gravel pit was undetermined due to lack of exposure or geologic evidence to make a determination.
| Ob_mod |  | Text, 1 | Ex: ~, >, < | Modifiers to express numeric approximations for the overburden thickness at a gravel pit ~ approximate, < less than > greater than
| Ob_val |  | Number, 4 |  | Gives a value for overburden thickness
| Overbrdn |  | Text, 15 |  | Expresses overburden thickness by possibly using one or both the modifier and value.
| Zstatus_b |  | Text, 40 |  | Associated with the field status_a. Usually this field further explains the condition of a partially or fully reclaimed gravel pit. Examples include the following: sloped indicates the pit walls were sloped, naturally vegetated means the gravel pit is being reclaimed naturally through the revegetation of grass, shrubs or trees, agriculture, parks, dump indicates the current land use.