DRAFT

WELL INFORMATION

DATA STANDARD

Standard No.: EX000025.2 

July 10, 2009

		This standard has been produced through the

Exchange Network Leadership Council (ENLC).

The Exchange Network Leadership Council (ENLC) is a partnership among US
EPA, States and Tribal partners to promote the efficient sharing of
environmental information through the efficient management of the
Exchange Network development and adoption of data standards. More
information about is available at www.exchangenetwork.net/standards 
HYPERLINK "http://"   .

Foreword

The Exchange Network Leadership Council (ENLC) is a partnership among US
EPA, States and Tribal partners to develop and agree upon data standards
for environmental information collection and exchange.  The Council
seeks to promote efficient sharing of environmental information between
State, US EPA and Tribal partners through the development of data
standards.  More information about data standards is available at
http://www.exchangenetwork.net/standards.

1.0	INTRODUCTION

Environmental information is a key tool in the effective management of
our environmental resources and human health conditions.  As a result,
much effort goes into data acquisition, management, maintenance,
exchange, and oversight.  Greater access is the goal of many data
consumers, and data managers. Providers invest significant resources
meeting their requirements. In response, many data providers are
improving access as they post usable copies of their environmental
information on the web.  These efforts are a vast improvement over
previous conditions; however, there is a growing desire and need to both
provide and receive data in a clearly defined and a uniform way.  Data
from multiple sources can then be aggregated and used without the
inherent variations that exist between data sets across agencies. 

1.1	Scope

This ENLC standard describes data elements and data groupings that are
used to exchange information about wells.  It includes information about
well ownership, location, use, and construction.  The user may find that
the information here can be very detailed, however, it should be noted
that it provides the structure and template for those data that are
available and there is need to exchange. 

1.2	Revision History

Date	Version	Description

January 6, 2006	Draft Standard	The Environmental Data Standards Council
agreed to recommend that the Exchange Network Leadership Council publish
draft standard in the Federal Register.

August 16, 2006	Final	The final standard was adopted by the ENLC.

July 22, 2008	EX000025.2	Modification of data standard to incorporate
additional water quality data elements. 







1.3	References

This standard relies on other standards to make it complete and provide
the necessary support. As such users should consider the Normative
Standards (references) noted below, integral to the Well Information
Data Standard. These include: 

ESAR: Measure [EX000010.1] Data Standard

ESAR: Method [EX000011.1] Data Standard

Attached Binary Object [EX000006.1] Data Standard

Bibliographic Reference [EX000007.1] Data Standard 

Contact Information [EX000019.2] Data Standard

Representation of Date and Time [EX000013.1] Data Standard

1.4	Terms and Definitions

None.

1.5	Implementation

Users are encouraged to use the XML registry housed on the Exchange
Network Web site ( HYPERLINK "http://www.exchangenetwork.net/"
http://www.exchangenetwork.net ) to download schema components for the
construction of XML schema flows.  In addition, the Environmental Data
Registry (http:// HYPERLINK "http://www.epa.gov/edr" www.epa.gov/edr )
provides the data standard structure and attributes in a downloadable
format that will facilitate database development activities.  

1.6	Document Structure 

The structure of this document is briefly described below: 

a.	Section 2.0 Well Information Diagram, illustrates the principal data
groupings contained within Well Information Data Standard.

b.	Section 3.0 Well Information Data Standards Table, provides
information on the high and intermediate levels of Well Information data
groupings, as well as their related data elements. Where applicable, for
each level of this data standard, a definition, XML tag, note(s),
example list of values and format are provided.  The format column lists
the required number of characters for the associated data element, where
“A” specifies alphanumeric, “N” designates numeric, “G” is
used for grouping and “D” for time and date elements. 

c.	Data Element Numbering. For purposes of clarity and to enhance
understanding of data standard hierarchy and relationships, each data
group is numerically classified from the primary to the elemental level.


d.	Code and Identifier Metadata: Metadata, defined here as data about
data or data elements, includes their descriptions and/or any needed
context setting information required to identify the origin, conditions
of use, interpretation, or understanding  the information being
exchanged or transferred.  (Adapted from ISO/IEC 2382-17:1999
Information Technology Vocabulary—Part 17: Databases 17.06.05
metadata).  Based on the business need, additional metadata may be
required to sufficiently describe an identifier or a code.  A note
regarding this additional metadata is included in the notes column for
identifier and code elements. Additional metadata for identifiers may
include: 

• Identifier Context, which identifies the source or data system that
created or defined the identifier 

Additional metadata for codes may include: 

• Code List Identifier, which is a standardized reference to the
context or source of the set of codes 

• Code List Version Identifier, which identifies the particular
version of the set of codes. 

• Code List Version Agency Identifier, which identifies the agency
responsible for maintaining the set of codes 

• Code List Name, which describes the corresponding name for which the
code represents

e.	Appendix A, Well Information Data Structure Diagram illustrates the
hierarchical classification of the Well Information data standard.  This
diagram enables business and technical users of this standard to quickly
understand its general content and complexity.  Appendix B, lists the
references for Well Information Data Standard.



2.0	WELL INFORMATION DIAGRAM

The figure below illustrates the major data groups associated with the
Well Information Data Standard. 

3.0	WELL INFORMATION DATA STANDARD TABLE 

1.0	Well Identification 

Definition: 	Description of the attributes of a well.

Relationships:  	None.

Notes:		None.

XML Tag: 	WellIdentification

Data Element Name	Data Element Definitions	Notes	Format 	XML Tags

1.1 Well Identifier	Unique identifier assigned to the individual well by
the accepted authority, for example, the well tag number or Inventory
Record (atypical well construction details can be noted under Data
Element 2.11).	Multiple values may be allowed.

Example List of Values:

Asotin 2478

200519965

9374847

Well ID 3624

Note: Based on the business need, additional metadata may be required to
sufficiently describe an identifier. This additional metadata is
described in the Introduction section 1.6.d.	A	WellIdentifier

1.2 Well Name 	The name that designates the well.	Example List of
Values:

MW-32

A.W. Johnson Well	A	WellName

1.3 Well Name Start Date	Date the name was first associated with the
well.	Refer to the Representation of Date and Time [EX000013.1] Data
Standard.	D	WellNameStartDate

1.4 Well Name End Date	Date the name was last associated with the well. 
Refer to the Representation of Date and Time [EX000013.1] Data Standard.
D	WellNameEndDate

1.5 Well Owner 	Identifies the organization or person who owns or owned
the well.	Refer to the Contact Information [EX000019.2] Data Standard.

The following items may be needed:

Individual Full Name

Organization Formal Name 	G	WellOwner

1.6 Well Owner Contact 	Identifies the contact information for the
organization or person who owns or owned the well.	Refer to the Contact
Information [EX000019.2] Data Standard.

The following items may be needed:

Individual Full Name

Organization Formal Name 	G	WellOwnerContact

1.7 Well Owner Start Date	Date the owner was first associated with the
well.	Refer to the Representation of Date and Time [EX000013.1] Data
Standard.	D	WellOwnerStartDate

1.8 Well Owner End Date	Date the owner was last associated with the
well. 	Refer to the Representation of Date and Time [EX000013.1] Data
Standard.	D	WellOwnerEndDate

1.9 Land Owner Name	Identifies the organization or person who owns the
land where the well is located.	This data grouping will repeat for each
well owner.	A	LandOwnerName

1.10 Land Owner Contact 	Identifies the contact information for the
organization or person who owns the land where the well is located. 
Refer to the Contact Information [EX000019.2] Data Standard.

The following items may be needed:

Individual Full Name

Organization Formal Name	G	LandOwnerContact

1.11 Land Owner Start Date	Date the owner was first associated with the
land where the well is located.	Refer to the Representation of Date and
Time [EX000013.1] Data Standard.	D	LandOwnerStartDate

1.12 Land Owner End Date	Date the owner was last associated with the
land where the well is located. 	Refer to the Representation of Date and
Time [EX000013.1] Data Standard.	D	LandOwnerEndDate

1.13 Well Operator Name	Identifies the organization or person who
operates the well.	This data grouping will repeat for each well
operator.	A	WellOperatorName

1.14 Well Operator Contact 	Identifies the contact information for the
organization or person who operates the well.	Refer to the Contact
Information [EX000019.2] Data Standard.

The following items may be needed:

Individual Full Name

Organization Formal Name	G	WellOperatorContact

1.15 Well Operator Start Date	Date the operator was first associated
with the well.	Refer to the Representation of Date and Time [EX000013.1]
Data Standard.	D	WellOperatorStartDate

1.16 Well Operator End Date	Date the operator was last associated with
the well. 	Refer to the Representation of Date and Time [EX000013.1]
Data Standard.	D	WellOperatorEndDate

1.17 Well Status Text	Identifies the condition or status of the well.
This data grouping will repeat for each well status.

Example List of Values:

Abandoned

Active

Inactive

Decommissioned

In Need of Repair	A	WellStatusText

1.18 Well Status Date	Date that the well status was determined.	Refer to
the Representation of Date and Time [EX000013.1] Data Standard.	D
WellStatusDate

1.19 Well Type Text	Identifies the primary well type.	Example List of
Values:

Anode

Dewater

Drainage

Geothermal

Heat Reservoir

Injection

Irrigation

Monitoring

Observation

Recharge

Remediation

Repressurization

Seismic

Test Hole

Waste Disposal

Water Supply/Production

Water Quality Assessment

Soil Vapor Monitoring

Soil Vapor Extraction

Other	A	WellType Text

1.20 Well Use Text	Identifies the main use of the well.	Example List of
Values:

Air Conditioning/Heating

Aquaculture

Bottling

Commercial

Desalination

Domestic Water Supply

Fire Fighting

Industrial

Injection

Irrigation

Livestock Watering

Medicinal

Mining

Monitoring

Power

Public Water Supply

Recreation

Unused

Other	A	WellUseText

1.21 Well Measuring or Sampling Influences Text	Known or potential
strong influences that could affect measurements or samples collected
from the well over time.  	Note: May include a nearby well that is
pumping in the same water bearing zone. 

 Example List of Values:

Tidal Changes

Surface Water Stage Changes in Source Area

Frost

Confined Aquifer

Semi-confined Aquifer

Unconfined Aquifer 

Vados Zone

Karst Terrain

Upgradient Impacts

Inhibited Well Flow

Adjacent Active Wells

	A	WellMeasuringSamplingInfluencesText

1.22 Formation Type Text	Name of the primary formation or soils unit, in
which the well is completed.	Example List of Values:

Glacial Till

Marshall Sandstone

Fractured Bedrock	A	FormationTypeText

1.23 Groundwater Administrative Areas/ Designations Text	Areas that have
been established by governments for the purpose of administering or
regulating the groundwater where the well is completed. 

A	GroundwaterAdministrativeAreasDesignationsText

1.24 Wellhead Protection Area Name	Name of the Wellhead Protection Area
where the well is located.	Example List of Values:  

City of Grand Rapids Wellhead Protection Area 

Spring Creek Wellhead Protection Area                                   
          	A	WellHeadProtectionAreaName

1.25 Source Water Assessment Area Name	Name of the Source Water
Assessment Area where the well is located.	Example List of Values: 

City of Grand Rapids Source Water Assessment Area

City of Spokane Source Water Assessment Area	A
SourceWaterAssessmentAreaName



2.0	Well Construction 

	Definition: 	Characteristics of the well construction.

Relationships:  	None.

Notes:		None.

XML Tag: 	WellConstruction	

Data Element Name	Data Element Definitions	Notes	Format 	XML Tags

2.1 Well Construction Method Text	The method by which the well was
constructed.

	Example List of Values:

Air Percussion

Air Rotary

Bored/Augured

Cable Tool

Driven

Dug

Drive & Wash

Hydraulic Rotary

Jetted

Reverse Rotary

Trenching

Other 	A	WellConstructionMethodText

2.2 Well Construction Start Date	Date the excavation began.	Refer to the
Representation of Date and Time [EX000013.1] Data Standard.	D
WellConstructionStartDate

2.3 Well Construction End Date	Date that construction was completed on a
well.	Refer to the Representation of Date and Time [EX000013.1] Data
Standard.	D	WellConstructionEndDate

2.4 Well Completion Depth Measure 	Depth below land surface datum (LSD)
to which the well is completed.  	Note: May be equal to or less than the
Well Hole Depth.

Refer to the Measure [EX000010.1] Data Standard.

The following items may be needed:

Measure Value,

Measure Unit Code,	G	WellCompletionDepthMeasure

2.5 Well Hole Depth Measure 

	Depth below land surface datum (LSD) to the bottom of the hole on
completion of drilling. 

	Note: Sometimes the depth is greater than the Well Completion Depth.

Refer to the Measure [EX000010.1] Data Standard.

The following items may be needed:

Measure Value,

Measure Unit Code,	G	WellHoleDepthMeasure

2.6 Well Casing Diameter Measure 

	Well casing diameter at the surface.	Refer to the Measure [EX000010.1]
Data Standard.

The following items may be needed:

Measure Value,

Measure Unit Code,	G	WellCasingDiameterMeasure

2.7 Well Completion Method Text	The method of completion or the nature
of the openings that allow water to enter the well.	Example List of
Values and definitions:

Infiltration Gallery - intake occurs via horizontal conduit; 

Terminus - intake occurs via bottom of casing; 

Open Hole - most common in bedrock, uncased hole extends below the
bottom of the casing; 

Perforated /Slotted - intake occurs via perforations or slots in casing;


Porous Concrete - most common in shallow, dug wells; 

Sand Point - narrow, shallow, driven well, usually in sands, also know
as a drive or well point; 

Screened with Gravel Pack - intake occurs via screen in perforated
casing; 

Screened with Sand Pack - intake occurs via screen in perforated casing;


Walled - or shored - most common in shallow, dug wells; 

Other - use if none of the other categories fit; 

Unknown - use if unknown.	A	WellCompletionMethodText

2.8 Well Development Method Text	The method by which the efficiency of
the well was improved after it was constructed.	Example List of Values:

Airlift

Bail

Chemical Treatment

Jet

Surge Block

None	A	WellDevelopmentMethodText

2.9 Well Disinfected Indicator	An indicator specifying whether the well
was disinfected at the time of completion or not.	List of Permitted
Values:

Y – yes

N – no	A	WellDisinfectedIndicator

2.10 Well Aquifer Test Indicator	An indicator specifying whether an
aquifer testing has been performed (does not include short tests
performed by driller upon well completion).	List of Permitted Values:

Y – yes

N – no	A	WellAquiferTestIndicator

2.11 Well Construction Comment Text	Brief comments or other information
about the construction of a well.

A	WellConstructionCommentText

2.12 Well Construction Information Source Text	The source of the
information being exchanged.	Example List of Values:

Historical Public Records

Historical Field Notes

Current 	A	WellConstructionInformationSourceText



2.13	Well Intervals 

Definition: 	Well intervals are repeating items that are used to
describe the well details from the surface to the Well Hole Total Depth
and/or Well Completion Depth.  The interval types presented here include
Borehole, Casing, Opening, Fill, Lithology, and Equipment..  As many
interval types and intervals may be used as necessary to describe a
well..

Relationships:  	None.

Notes:		None.

XML Tag: 	WellIntervals	

Data Element Name	Data Element Definitions	Notes	Format 	XML Tags

2.13.1 Well Interval Borehole Diameter Identifier	The identifier
associated with the well borehole diameter interval being described and
the unique well identifier that identifies the well.

A	WellIntervalBoreholeDiameterIdentifier

2.13.2 Well Interval Borehole Diameter Measure 	Diameter of the borehole
within a specific interval.	Refer to the Measure [EX000010.1] Data
Standard.

The following items may be needed:

Measure Value,

Measure Unit Code,	G	WellIntervalBoreholeDiameterMeasure

2.13.3 Well Interval Borehole Diameter Depth to Top of Interval Measure 
Distance from the land surface datum (LSD) to the top of the Well
Interval being described. 	Note: Measurements above LSD are reported as
negative numbers; those below are positive.

Refer to the Measure [EX000010.1] Data Standard.

The following items may be needed:

Measure Value,

Measure Unit Code,	G	WellIntervalBoreholeDiameterDepthTopIntervalMeasure

2.13.4 Well Interval Borehole Diameter Depth to Bottom of Interval
Measure 	Distance from the land surface datum (LSD) to the bottom of the
Well Interval being described. 	Note: Measurements above LSD are
reported as negative numbers; those below are positive.

Refer to the Measure [EX000010.1] Data Standard.

The following items may be needed:

Measure Value,

Measure Unit Code,	G
WellIntervalBoreholeDiameterDepthBottomIntervalMeasure

2.13.5 Well Interval Casing Description Identifier	The identifier
associated with the well casing interval being described and the unique
well ID identifier that identifies the well. 

A	WellIntervalCasingIdentier

2.13.6 Well Interval Casing Material Type Name	Type of material from
which the well casing is made.	Example List of Values:

Brass or Bronze 

Brick 

Concrete

Copper

Fiberglass

Iron - Galvanized

Iron - Wrought

Metal - other 

Polymer - PVC 

Polymer - other 

Rock or Stone 

Steel - Coated 

Steel - Stainless 

Steel - other 

Teflon

Tile

Concrete 

Wood

Other material

Unknown	A	WellIntervalCasingMaterialTypeName

2.13.7 Well Interval Casing Join Type Name	The way individual casing
pieces are joined together.	Example List of Values:

Glued or Solvent-Welded

Locking Mechanism

Screwed

Stacked

Threaded

Welded - metal

Other

Unknown	A	WellIntervalCasingJoinTypeName

2.13.8 Well Interval Casing Inside Diameter Measure 	The diameter of the
inside of the Well Casing for a particular well.	Refer to the Measure
[EX000010.1] Data Standard.

The following items may be needed:

Measure Value,

Measure Unit Code,	G	WellIntervalCasingInsideDiameterMeasure

2.13.9 Well Interval Casing Wall Thickness Measure 	Thickness of the
Well Casing within a particular Well Interval.	Refer to the Measure
[EX000010.1] Data Standard.

The following items may be needed:

Measure Value,

Measure Unit Code,	G	WellIntervalCasingWallThicknessMeasure

2.13.10 Well Interval Casing Depth to Top of Interval Measure 	Distance
from the land surface datum (LSD) to the top of the Well Interval being
described. 	Note: Measurements above LSD are reported as negative
numbers; those below are positive.

Refer to the Measure [EX000010.1] Data Standard.

The following items may be needed:

Measure Value,

Measure Unit Code,	G	WellIntervalCasingDepthTopIntervalMeasure

2.13.11 Well Interval Casing Depth to Bottom of Interval Measure 
Distance from the land surface datum (LSD) to the bottom of the Well
Interval being described. 	Note: Measurements above LSD are reported as
negative numbers; those below are positive.

Refer to the Measure [EX000010.1] Data Standard.

The following items may be needed:

Measure Value,

Measure Unit Code,	G	WellIntervalCasingDepthBottomIntervalMeasure

2.13.12 Well Interval Fill Information Identifier	The identifier
associated with the fill interval being described and the unique well
identifier that identifies the well.

A	WellIntervalFillInformationIdentier

2.13.13 Well Interval Fill Material Type Text	Identifies the type of
material that fills the annular space for a particular Well Interval. 
Note: Includes material used as a surface seal.

Example List of Values:

Bentonite Grout (Chips, Granules, Pellets, Slurry)

Neat Cement Grout (Portland Cement and Water)

Clay - other

Concrete

Gravel

Packer

Puddling Clay (Well Cuttings and Bentonite)

Sand

Sand and Gravel

Well Cuttings

None

Other Material

Unknown	A	WellIntervalFillMaterialTypeText

2.13.14 Well Interval Fill Method Type Text	Identifies the method used
to place the fill material into the particular Well Interval.	Example
List of Values:

Pressure Grouting

Gravity

Tremie Line

Other

	A	WellIntervalFillMethodTypeText

2.13.15 Well Interval Fill Width Measure 	Horizontal width of the Fill
Material in the annular space. 	Note: Can include a surface seal or
gravel pack around a well screen. If not directly measurable, subtract
the drill bit size from the casing out side diameter.

Refer to the Measure [EX000010.1] Data Standard.

The following items may be needed:

Measure Value,

Measure Unit Code,	G	WellIntervalFillWidthMeasure

2.13.16 Well Interval Fill Volume Measure 	Volume of Fill for a
particular Well Interval. 	Note: Fill Volume equals the fill width times
the fill height. In cubic feet, cubic meters, or cubic yards.

Refer to the Measure [EX000010.1] Data Standard.

The following items may be needed:

Measure Value,

Measure Unit Code,	G	WellIntervalFillVolumeMeasure

2.13.17 Well Interval Fill Depth to Top of Interval Measure 	Distance
from the land surface datum (LSD) to the top of the Well Interval being
described. 	Note: Measurements above LSD are reported as negative
numbers; those below are positive.

Refer to the Measure [EX000010.1] Data Standard.

The following items may be needed:

Measure Value,

Measure Unit Code,	G	WellIntervalFillDepthTopIntervalMeasure

2.13.18 Well Interval Fill Depth to Bottom of Interval Measure 	Distance
from the land surface datum (LSD) to the bottom of the Well Interval
being described. 	Note: Measurements above LSD are reported as negative
numbers; those below are positive.

Refer to the Measure [EX000010.1] Data Standard.

The following items may be needed:

Measure Value,

Measure Unit Code,	G	WellIntervalFillDepthBottomIntervalMeasure

2.13.19 Well Interval Opening Information Identifier	The identifier
associated with the well interval opening being described and the unique
well identifier that identifies the well.

A	WellIntervalOpeningInformationIdentifier

2.13.20 Well Interval Opening Type Text	Type of opening within a
particular Well Interval. 	Note: Openings are permeable portions of the
Well Casing or lining.

Example List of Values:

Fractured rock

Open-ended Casing

Open hole

Perforated Pipe

Porous Material

Undifferentiated

Screen - Continuous Slot or Wire-wound

Screen – Direct Push (e.g. Drive, Sand or Well Point)

Screen - Louver, Bridge Slot, or Shutter

Screen - Mesh

Screen – Pipe Base (Continuous Slot Jacket over Slotted Pipe Core)

Screen - Slotted Pipe

Unscreened

Screen Type - Unknown 

Walled or Shored

Other

Unknown	A	WellIntervalOpeningTypeText

2.13.21 Well Interval Opening Material Type Text	Type of material from
which the Well Interval Opening (screen or otherwise) is constructed.
Example List of Values:

Brass or Bronze

Concrete 

Fiberglass

Iron - Galvanized

Iron - Wrought

Metal - other

Polymer - PVC

Polymer - other

Steel - Coated

Steel - Stainless

Steel - other

Tile

Concrete

Other Material

Unknown	A	WellIntervalOpeningMaterialTypeText

2.13.22 Well Interval Opening Description Text	Description that
elaborates upon the Opening.	Example List of Values:

The wire-wound screen was telescoped into the casing with an inflatable
packer.	A	WellIntervalOpeningDescriptionText

2.13.23 Well Interval Opening Join Type Text	The process used to join
the casing with the opening interval.	Example List of Values:

Glued or Solvent-Welded

Locking Mechanism

Screwed

Stacked

Threaded

Welded - Metal

Other

Unknown	A	WellIntervalOpeningJoinTypeText

2.13.24 Well Interval Opening Mesh Size Measure 	Measure of the mesh or
screen size within a particular Well Interval Opening. 	Refer to the
Measure [EX000010.1] Data Standard.

The following items may be needed:

Measure Value,

Measure Unit Code,	G	WellIntervalOpeningMeshSizeMeasure

2.13.25 Well Interval Opening Width Measure 	Width of an Opening within
a particular Well Interval. 	Note: An opening constitutes the short
dimension for perforations or slots. Width of continuous-slot,
wire-wound, or mesh screens falls under Well Interval Opening Mesh Size.


Refer to the Measure [EX000010.1] Data Standard.

The following items may be needed:

Measure Value,

Measure Unit Code,	G	WellIntervalOpeningWidthMeasure

2.13.26 Well Interval Opening Depth to Top of Interval Measure 	Distance
from the land surface datum (LSD) to the top of the Well Interval being
described. 	Note: Measurements above LSD are reported as negative
numbers; those below are positive.

Refer to the Measure [EX000010.1] Data Standard.

The following items may be needed:

Measure Value,

Measure Unit Code,	G	WellIntervalOpeningDepthTopIntervalMeasure

2.13.27 Well Interval Opening Depth to Bottom of Interval Measure 
Distance from the land surface datum (LSD) to the bottom of the Well
Interval being described. 	Note: Measurements above LSD are reported as
negative numbers; those below are positive.

Refer to the Measure [EX000010.1] Data Standard.

The following items may be needed:

Measure Value,

Measure Unit Code,	G	WellIntervalOpeningDepthBottomIntervalMeasure

2.13.28 Well Interval Lithologic Unit Identifier	The identifier
associated with the well lithologic interval being described and the
unique well identifier that identifies the well.

A	WellIntervalLithologicUnitIdentifier

2.13.29 Well Interval Lithologic Unit USGS/USCS Code	Unique code
assigned to a type of underground Lithologic Unit.  	Example List of
Values:

BLDR - Boulder

CL - Clays

GC - Gravels, Clayey

Note 1: Lithologic Units may be a mixture of United States Geological
Survey (4 characters) and Unified Soil Classification System (2
characters) codes. 

Note 2: Based on the business need, additional metadata may be required
to sufficiently describe an identifier. This additional metadata is
described in the Introduction section 1.6.d.	A
WellIntervalLithologicUnitUSGS/USCSCode

2.13.30 Well Interval Lithologic Unit Depth to Top of Interval Measure 
Distance from the land surface datum (LSD) to the top of the Well
Interval being described. 	Note: Measurements above LSD are reported as
negative numbers; those below are positive.

Refer to the Measure [EX000010.1] Data Standard.

The following items may be needed:

Measure Value,

Measure Unit Code,	G	WellIntervalLithologicUnitDepthTopIntervalMeasure

2.13.31 Well Interval Lithologic Unit Depth to Bottom of Interval
Measure 	Distance from the land surface datum (LSD) to the bottom of the
Well Interval being described. 	Note: Measurements above LSD are
reported as negative numbers; those below are positive.

Refer to the Measure [EX000010.1] Data Standard.

The following items may be needed:

Measure Value,

Measure Unit Code,	G
WellIntervalLithologicUnitDepthBottomIntervalMeasure

2.13.32 Well Interval Equipment Identifier	The identifier associated
with the installed well equipment interval being described and the
unique well identifier that identifies the well.

A	WellIntervalEquipmentIdentifier

2.13.33 Well Interval Equipment Type Text	The type of equipment
installed within the interval of the well being described.	Example List
of Values:

Instruments

Packer

Sensors

Intakes

Tubing

Other

	A	WellIntervalEquipmentTypeText

2.13.34 Well Interval Equipment Depth to Top of Interval Measure 
Distance from the land surface datum (LSD) to the top of the Well
Interval being described. 	Note: Measurements above LSD are reported as
negative numbers; those below are positive.

Refer to the Measure [EX000010.1] Data Standard.

The following items may be needed:

Measure Value,

Measure Unit Code,	G	WellIntervalEquipmentDepthTopIntervalMeasure

2.13.35 Well Interval Equipment Unit Depth to Bottom of Interval Measure
	Distance from the land surface datum (LSD) to the bottom of the Well
Interval being described. 	Note: Measurements above LSD are reported as
negative numbers; those below are positive.

Refer to the Measure [EX000010.1] Data Standard.

The following items may be needed:

Measure Value,

Measure Unit Code,	G	WellIntervalEquipmentDepthBottomIntervalMeasure



3.0	Well Measuring Point 

	Definition: 	Characteristics of the well measuring point.  The
measuring point is the place from which the measurement is made.

Relationships:  	None.

Notes:		While most wells only have one measuring point, some have two or
more for various reasons.  Sometimes an old 					measuring point can no
longer be used and a new one must be established.  Other times,
different groups measuring the 				same well might establish their own
measuring points.

XML Tag: 	WellMeasuringPoint	

Data Element Name	Data Element Definitions	Notes	Format 	XML Tags

3. 1 Well Measuring Point Name	Name of the Well Measuring Point
associated with the Well Measuring Point Description.  	Example List of
Values:

Measuring Point 1

MP2	A	WellMeasuringPointName

3. 2 Well Measuring Point Height Measure 	Height above or below the land
surface datum (LSD) of a well from which the measurement is taken.  
Note: A measuring point below the Well Location LSD is preceded by a
minus (-) sign, such as for a flush-mount well.

Refer to the Measure [EX000010.1] Data Standard.

The following items may be needed:

Measure Value,

Measure Unit Code,	G	WellMeasuringPointHeightMeasure

3.3 Well Measuring Point Description Text	Describes the point from which
the measurement was taken.	Example List of Values:

Top of casing 

Notch on north side	A	WellMeasuringPointDescriptionText

3.4 Well Measuring Point Effective Date	Date when a particular measuring
point was first used.	Refer to the Representation of Date and Time
[EX000013.1] Data Standard.	D	WellMeasuringPointEffectiveDate

3.5 Well Measuring Point End Date	Date when a particular measuring point
was abandoned 	Refer to the Representation of Date and Time [EX000013.1]
Data Standard.	D	WellMeasuringPointEndDate

4.0	Well Information Attached Binary Object 

Definition: 	Refer to documents, images, maps, photos, laboratory
materials, geospatial coverages, and other objects within the 			data
submission that pertain to the laboratory analyses.

Relationships:  	None.

	Notes:		Refer to the Attached Binary Object [EX000006.1] Data Standard.

			Multiple objects may be attached to data submission for the analyses
included in the submission. Where a binary 					object is attached, both
the type code and the title of the file must be provided. Attached
Binary Object descriptors will 				adhere to the specified technical
standards.

	XML Tag: 	WellInformationAttachedBinaryObject

5.0	Well Information Bibliographic Reference 

Definition: 	Catalog information describing associated project
resources, including documents, images, maps, photos, laboratory
materials, geospatial coverages and other objects.

Relationships:  	None.

Notes:		Refer to the Bibliographic Reference [EX000007.1] Data Standard.

XML Tag: 	WellInformationBibliographicReference

Appendix A

 Appendix B

References

1.	See 40 CFR Parts 270.14(c)(5);  270.14(c)(6)(iv);  270.14(c)(7)(vi);
and 264.97(d),(e) and (f) for Groundwater Monitoring Requirements at
RCRA Facilities  

2.	USEPA 1989. Statistical Analysis of Groundwater Monitoring Data at
RCRA Facilities, Interim Final Guidance (EPA/530-SW-89-026), NTIS
PB-89-151-047

3.	Claasen, H. C. 1982. Guidelines and Techniques for Obtaining Water
Samples That Accurately Represent the Water Chemistry of an Aquifer.
U.S. Geological Survey, Open-File Report 82-1024, Lake Colorado, 49 pp

4.	USEPA, 1989. Ground-Water Monitoring in Karst Terrains, Recommended
Protocols & Implicit Assumptions ; USEPA EMSL (EPA/600/X-89/050)  Las
Vegas, NV  HYPERLINK "http://www.epa.gov/swerust1/cat/gwkarst.pdf"
http://www.epa.gov/swerust1/cat/gwkarst.pdf 

5.	Barcelona, M.J.; Gibb J.P; Helfrich, J.A; Garske, E.E.; 1985. 
Practical Guide for Ground-Water Sampling; Illinois State Water Survey
Department of Energy and Natural Resources; U.S. Environmental
Protection (Contract No. EPA CR-809966-01) Champaign, Illinois 
HYPERLINK "http://www.epa.gov/swerust1/cat/gwkarst.pdf"
http://www.epa.gov/swerust1/cat/gwkarst.pdf 

6.	ISO/IEC 2382-17:1999 Information Technology Vocabulary—Part 17:
Databases 17.06.05 metadata

7. 	See   HYPERLINK "http://ngmdb.usgs.gov/Geolex/geolex_home.html" 
http://ngmdb.usgs.gov/Geolex/geolex_home.html  for USGS Lithologic Units
information

8.	ASTM D2487-00 Standard Classification of Soils for Engineering
Purposes (Unified Soil Classification System); ASTM International; 10
March 2000, 12pp

Well Information Data Standard

Standard No.: EX000025.2

	

10/26/2005 	Working Draft – Well Identification Data Standard 

July 22, 2008		Page   PAGE  4  

July 22, 2008		Page   PAGE  32  

July 22, 2008		Page   PAGE  34  	

Well Information

Data Standard

1.0 Well Information

2.0 Well Construction

5.0 Well Information Bibliographic Reference

4.0 Well Information Attached Binary Object

3.0 Well Measuring Point 

Well Information

Data Standard

3.0 Well Measuring Point 

3.1  Well Measuring Point Name

3.2  Well Measuring Point Height Measure 

3.3  Well Measuring Point Description Text

3.4  Well Measuring Point Effective Date

3.5  Well Measuring Point End Date

2.13 Well Interval 

2.13.1   Well Interval Borehole Diameter Identifier

2.13.2   Well Interval Borehole Diameter Measure 

2.13.3   Well Interval Borehole Diameter Depth to Top of Interval
Measure 

2.13.4   Well Interval Borehole Diameter Depth to Bottom of Interval
Measure 

2.13.5   Well Interval Casing Description Identifier

2.13.6   Well Interval Casing Material Type Name

2.13.7   Well interval Casing Join Type Name

2.13.8   Well Interval Casing Inside Diameter Measure 

2.13.9   Well Interval Casing Wall Thickness Measure 

2.13.10 Well Interval Casing Depth to Top of Interval Measure 

2.13.11 Well Interval Casing Depth to Bottom of Interval Measure 

2.13.12 Well Interval Fill Information Identifier

2.13.13 Well Interval Fill Material Type Text

2.13.14 Well Interval Fill Method Type Text 

2.13.15 Well Interval Fill Width Measure 

2.13.16 Well Interval Fill Volume Measure 

2.13.17 Well Interval Fill Depth to Top of Interval Measure 

2.13.18 Well Interval Fill Depth to Bottom of Interval Measure 

2.13.19 Well Interval Opening Information Identifier

2.13.20 Well Interval Opening Type Text

2.13.21 Well Interval Opening Material Type Text

2.13.22 Well Interval Opening Description Text

2.13.23 Well Interval Opening Join Type Text

2.13.24 Well Interval Opening Mesh Size Measure 

2.13.25 Well Interval Opening Width Measure 

2.13.26 Well Interval Opening Depth to Top of Interval Measure 

2.13.27 Well Interval Opening Depth to Bottom of Interval Measure 

2.13.28 Well Interval Lithologic Unit Identifier

2.13.29 Well Interval Lithologic Unit USGS/USCS Code

2.13.30 Well Interval Lithologic Unit Depth to Top of Interval Measure 

2.13.31 Well Interval Lithologic Unit Depth to Bottom of Interval
Measure 

2.13.32 Well Interval Equipment Identifier

2.13.33 Well Interval Equipment Type Text

2.13.34 Well Interval Equipment Depth to Top of Interval Measure

2.13.35 Well Interval Equipment Depth to Bottom of Interval Measure

2.0 Well Construction 

2.1  Well Construction Method Text

2.2  Well Construction Start Date

2.3  Well Construction End Date

2.4  Well Completion Depth Measure 

2.5  Well Hole Depth Measure 

2.6  Well Casing Diameter Measure 

2.7  Well Completion Method Text

2.8  Well Development Method Text

2.9  Well Disinfected Indicator

2.10 Well Aquifer Test Indicator

2.11 Well Construction Comment Text

2.12 Well Construction Information Source Text

2.13 Well Interval 

1.0 Well Identification 

1.1   Well Identifier

1.2   Well Name

1.3   Well Name Start Date

1.4   Well Name End Date

1.5   Well Owner 

1.6   Well Owner Contact 

1.7   Well Owner Start Date

1.8   Well Owner End Date

1.9   Land Owner Name

1.10 Land Owner Contact 

1.11 Land Owner Start Date

1.12 Land Owner End Date

1.13 Well Operator Name

1.14 Well Operator Contact 

1.15 Well Operator Start Date

1.16 Well Operator End Date

1.17 Well Status Text

1.18 Well Status Date

1.19 Well Type Text

1.20 Well Use Text

1.21 Well Measuring or Sampling Influences Text

1.22 Formation Type Text

1.23 Groundwater Administrative Areas/Designations Text

1.24 Wellhead Protection 

	Area Name

1.25 Source Water Assessment Area Name

5.0 Well Information Bibliographic Reference 

4.0 Well Information Attached Binary O

bject 

