Abstract:

This dataset contains the Ground Water Contamination Areas statewide map showing the boundaries of delineated areas of known groundwater contamination in the State of Florida pursuant to Chapter 62-524, F.A.C., New Potable Water Well Permitting In Delineated Areas. 38 Florida counties have been delineated primarily for the agricultural pesticide ethylene dibromide (EDB), and to a much lesser extent, volatile organic and petroleum contaminants. This GIS layer represents approximately 427,897 acres in 38 counties in Florida that have been delineated for groundwater contamination. However, it does not represent all known sources of groundwater contamination for the state of Florida.

Purpose:

This GIS layer is intended to be used by regulatory agencies issuing potable water 
well construction permits in areas of ground water contamination to protect public 
health and the ground water resource. Permitted water wells in these areas must 
meet specific well construction criteria and water testing prior to well use. Other 
users of this layer may use it as a screening tool for further investigation. This 
dataset only indicates the presence or absence of specific groundwater 
contaminants and does not represent all known sources of groundwater 
contamination in the state of Florida.

Supplemental_Information:

Each Delineated Area is identified by a unique Zone ID. The Zone ID is made up of
the County Code number, the Contaminant Code number, Number of revisions, and 
a three-digit value. To interpret the Zone ID: 1) The first 2 digits are the Florida 
County Code number. 2) The next 2 digits are the contaminant code. If the 
contaminant code value is between 1 and 9 it only uses one digit. If there is more 
than one contaminant the code will be 99. 3) The next digit is the number of 
revisions on this Zone ID. 4) The last three digits are a number ensuring the ZONE 
ID is unique. Note: Contaminant codes are listed at the end of the Entity Attribute 
section, under Entity and Attribute Overview.

Currentness_Reference:

publication date

Use_Constraints:

No constraint: Delineated areas are mapped and adopted by rule under Chapter 62
-524, G.A.C. *Note: This GIS layer does not represent all known sources of 
groundwater contamination for the state of Florida.

FDEP:
This data is intended to be used for general informational and planning purposes, 
and is not appropriate for legal and/or cadastral purposes.

FDEP:
The data set is NOT a survey document and should not be utilized as such.
FDEP GIS data is provided as a public service. FDEP makes every effort to provide
accurate and complete data. Metadata is provided for all datasets and no data should
be used without first reading and understanding the limitations of the data. The
Florida Department of Environmental Protection (FDEP) provides NO WARRANTY as to the
accuracy of this data or any corresponding attributes or metadata. Data is provided
in an as is condition, without warranty of any kind, either expressed or implied,
including any assurance that the data is fit for a particular purpose. FDEP shall
have no liability, in any case, to the use of provided data (including
redistribution and reproduction). Full liability, responsibility and consequence
relating to the use of provided data rest with the user.

Address:

2600 Blairstone Rd. MS 3580

Data_Set_Credit:

DEP/DWF

Attribute_Accuracy_Report:

GeoPlan relied on the integrity of the attribute information within
the original data.

Logical_Consistency_Report:

This data is provided 'as is'. GeoPlan relied on the integrity
of the original data layer's topology

Completeness_Report:

This data is provided 'as is' by GeoPlan and is complete to our
knowledge.

Horizontal_Positional_Accuracy_Report:

This data is provided 'as is' and its horizontal positional accuracy
has not been verified by GeoPlan

Vertical_Positional_Accuracy_Report:

This data is provided 'as is' and its vertical positional accuracy
has not been verified by GeoPlan

Source_Contribution:

Spatial and Attribute Information

Process_Description:

For HRS EDB wells, USGS 7.5" quadrangles were overlayed with 100 meter 
UTM grids. The location of each contaminated well was digitized to the nearest 
100 meters in the appropriate UTM projection. These points were then buffered by 
1000-2000 feet. Site maps and plume models were transferred to 7.5" quads and 
digitized on a Calcomp 9100 digitizer using ARC/INFO. The individual quad 
coverages of buffered points were projected from UTM to Lambert using 
ARC/INFO for VMS on a VAX. The coverages were then map joined, dissolved, 
projected to Albers Equal Area Conic, and exported. The exported coverages were
ftp'd to a DEC/ALPHA UNIX system, imported using ARC/INFO 6.1.2 and inserted 
into the quad library. In Spring '97 the data was converted from NAD27 to HPGN 
using the projection command within ARC/INFO version 7.0.4. In Spring, 1999, 
the shapefile of this dataset was inserted in Spatial Database Engine (SDE 3.0.2).

Process_Description:

Utilized the Attribute Transfer Tool to update the geometry of ZONEID 55993078. 
The updated boundary is based on the scanned copy of: "Existing/Proposed 
Delineated Areas, Silvex Site, Zone ID# 55993078," map created by Tricia 
McClenahan, 05/04/2000. The scanned map was georeferenced and digitized at 
1:2,400 scale. The boundary was then tentatively approved by Joe North and then 
approved for upload by David James 09/10/2010.

Address:

2600 Blair Stone Rd

Please try contacting via email first.

Process_Description:

(1)Attributes were aliased to give meaningful names, redundant attributes were 
removed, attribute values were standardized, and symbology was defined for this 
layer. (2) Metadata: Updated Contact person. Updated Time Period of Content. 
Added descriptive language to abstract, purpose, and supplementary information. 
Added tabular data describing contaminant codes.

Process_Description:

(1) Deleted 6 features that had geometry, but no attribution at all. 
(2) Deleted 6 additional features that had no contaminant codes listed: 
ZONEID: 42003690 53003411 53003412 53003453 53003469 28003717

Process_Description:

Updated layer obtained from WRM and inserted in ArcSDE. 
Data published in DataCatalog, DataMiner and published in MapDirect.

Process_Description:

The GeoPlan Center downloaded the Ground Water Contamination Areas
dataset on August 1st, 2018 from the FDEP Data Portal:

Florida Department of Environmental Protection Geospatial Open Data:
http://geodata.dep.state.fl.us/

http://geodata.dep.state.fl.us/datasets/ground-water-contamination-areas

Please Note: Data is also available via the FTP website:
http://publicfiles.dep.state.fl.us/otis/gis/data/ground_water_contamination.zip

GROUND_WATER_CONTAMINATION.zip
GROUND_WATER_CONTAMINATION.gdb

The GDB layer was exported to shapefile.

The dataset's projection was redefined to FGDL Albers.

During the QA/QC process the following tasks were undertaken:
- Redefined the dataset's projection from FDEP Albers to FGDL Albers.
- Uppercased all records in the table.
- A DESCRIPT field was added based on "GROUND WATER CONTAMINATION 
  AREA" & ZONE_ID.
- A FGDLAQDATE field was added based on date downloaded from source.
- Renamed file from GROUND_WATER_CONTAMINATION to 
  GRNDWATR_CONTAM_OCT10.

Process_Description:

Dataset copied.

Attribute_Definition:

Internal feature number.

Attribute_Definition_Source:

ESRI

Attribute_Definition:

Feature geometry.

Attribute_Definition_Source:

ESRI

Attribute_Definition:

Zone ID.

Attribute_Definition_Source:

FDEP

Attribute_Definition:

The Contaminant Codes for the Zone.

Attribute_Definition_Source:

FDEP

Attribute_Definition:

USGS quad number

Attribute_Definition_Source:

FDEP

Attribute_Definition:

County Name.

Attribute_Definition_Source:

FDEP

Attribute_Definition:

Florida Water Management District.

Attribute_Definition_Source:

FDEP

Attribute_Definition:

Presence of arsenic

Attribute_Definition_Source:

FDEP