Description: The RS Projects feature class includes a list of facilities or real properties that are regulated through the Delaware Hazardous Substance Cleanup Act (HSCA). The Delaware HSCA gives DNREC the authority to ensure cleanup of facilities with a release or imminent threat of release of hazardous substances. This may include HSCA Enforcement and HSCA-lead, Brownfields, Voluntary Cleanup, and Long-Term Steward.
Copyright Text: Delaware Natural Resources and Environmental Control
Division of Waste and Hazardous Substances
Remediation Section
Description: The Storage Tank Compliance and Corrective Action Programs oversee the cleanup of petroleum and chemical contamination at properties where a release has occurred from underground storage tanks (USTs). Data is Tank_Management_Leaking_Facilities Enterprise Geodatabase View from the Delaware Environmental Navigator (DEN) database updated via LUST App within UST-DE.
Copyright Text: Delaware Department of Natural Resources and Environmental Control (DNREC).
Description: The RS Projects feature class includes a list of facilities or real properties that are regulated through the Delaware Hazardous Substance Cleanup Act (HSCA). The Delaware HSCA gives DNREC the authority to ensure cleanup of facilities with a release or imminent threat of release of hazardous substances. This may include HSCA Enforcement and HSCA-lead, Brownfields, Voluntary Cleanup, and Long-Term Steward.
Copyright Text: Delaware Natural Resources and Environmental Control
Division of Waste and Hazardous Substances
Remediation Section
Description: The DNREC underground storage tank (UST) compliance program is responsible for ensuring the safe operation of over 400 federally regulated UST and 150 state regulated UST heating oil facilities in the state. The program oversees the installation, retrofitting, compliance and removal of underground storage tank systems to verify the work is completed properly and by qualified, trained, and certified individuals and companies. Underground storage tank systems which are subject to the requirements of the underground storage tank compliance program can be found at gas stations, manufacturing facilities, schools, and hospitals. Data is Underground_Storage_Tanks Enterprise Geodatabase View from the Delaware Environmental Navigator (DEN) database updated via UST-DE app.
Copyright Text: Department of Natural Resources and Environmental Control (DNREC).
Description: The purpose of this program is to protect the quality of public water supplies derived from public water wells by providing local governments with the knowledge and tools necessary to protect the land area surrounding those wells from activities or substances that might harm the quality or quantity of water derived from those wells. This purpose will be accomplished in part by the creation and implementation of a "Water Supply Protection Program," which incorporates the federal Wellhead Protection Program required by Congress in the 1986 Amendments to the federal Safe Drinking Water Act. This plan has been developed under the guidance of both the U.S. EPA and the State's Water Supply Protection Advisory Board (WSPAB). The assistance of these two organizations has been vital to the development of a meaningful and workable method for protecting the State's water supplies.
Description: SWMP2007 WetlandsThe Conservation Management Institute (CMI) has updated the existing USFWS National Wetlands Inventory (NWI) and Delaware Statewide Wetland Mapping Project (SWMP) data to meet or exceed NWI procedures and the guidelines of the Federal Geographic Data Committee's Wetland Mapping Standard (document FGDC-STD-015-2009) employing heads-up photo interpretation in a softcopy environment. We identified wetlands with a minimum mapping unit (MMU) of 0.5 acres with smaller, highly recognizable polygons (e.g., ponds) mapped down to approximately 0.10 acres. Photo interpreters (PIs) identified the wetland targets at a scale of approximately to 1:10,000 with delineations completed at 1:5,000 and, occasionally, larger as necessary. Polygons were then attributed with a code corresponding to the existing NWI classification scheme (Cowardin et al. 1979) and Delaware specific modifiers, where applicable. The update was completed in ESRI's ArcGIS 9.3.x using 2007 Color Infrared, obtained from the State of Delaware. All spatial and classification changes were made manually using standard photogrammetric techniques. When it was necessary to use ancillary datasets to aid in decisions, PIs would consult one or more of the following: Soil Survey Geographic Database (SSURGO), 1992 color infrared, National Hydrography Dataset (NHD), National Elevation Dataset (NED), NWI, and USGS Topographic maps. After we completed the delineation and attribution of the wetland polygons, datasets were inspected through an in-house quality control process for spatial, classification, and topologic errors before being sent to the U.S. Fish and Wildlife Service (USFWS) and the State of Delaware for final review and corrections. Additionally, the wetlands layer was run through the USFWS verification tool to further ensure the accuracy of polygons and the codes assigned to them. CMI completed the LLWW classification following guidelines provided by the USFWS. These classifications were derived from the Cowardin code, NHD, topography, and spatial relationships between wetlands. We assigned the initial codes based through a largely automated process. Where applicable, this process uses the Cowardin codes to attribute Landscape and Water body type. The next step largely uses water regime and spatial relationships to attribute Landform. We then manually attributed the NHD to assign Water flow. We manually reviewed the dataset and modified the attributes to create a correct and logical dataset. As the automated classification tends to use too fine a scale, we completed the finer step at a smaller scale than the initial classification in consultation with the Fish and Wildlife Service and the State of Delaware. Delaware modifiers are based off spatial data and guidance provided by DNREC. Wetland functional analysis was performed in consultation with Dr. Ralph Tiner of the USFWS.The USFWS and the State of Delaware contracted with the CMI to complete an updated and enhanced version of the existing NWI and SWMP for Kent, New Castle and Sussex Counties in Delaware. The area encompasses approximately 54 full and partial USGS quadrangles. This work involved updating the current existing NWI and SWMP data using more recent 2007 imagery, as well as including enhanced wetland data in the form of Landscape, Landform, Water flow path, and Water body type (LLWW; Tiner 2003). Wetlands were classified using Cowardin et al. (1979) and Delaware specific modifiers for rare, unique, and locally significant wetlands.Wetlands listed in the *Attribute* column are classified using the above referenced Cowardin system, where some wetland polygons have an 'H' modifier preceding their classification. These wetlands are known as 'Hwetlands' and consist of hydric soils having natural vegetation but lacking a photointerpretable wet signature. Hwetlands have the dominant soil type from SSURGO listed in the *musym* attribute column. This designation does not imply the lack of hydrology to qualify as wetland, only that during the mapping exercise no wet signature was evident and could be due to dense evergreen vegetation, lack of normal rainfall or groundwater at the time of photography, being artificially drained, etc. Hwetland polygons require localized verification on site to determine wetland extent. Landscape level functional assessment conducted during this mapping evaluated 11 separate functions. Wetlands were rated as either High or Moderate where appropriate for 8 of the 11 for functions: Bank and Shoreline Stabilization (BSS); Carbon Sequestration (CAR); Coastal Storm Surge Detention (CSS); Nutrient Transformation (NT); Other Wildlife Habitat (OWH); Streamflow Maintenance (SM); Sediment Retention (SR); and Surface Water Detention (SWD). Fish and Aquatic Invertebrate Habitat (FAIH) received a designation of High, Moderate, or Stream where appropriate. Provision for Waterfowl and Waterbird Habitat (WBIRD) received a designation of High or WoodDuck where appropriate. Provision for Unique, Uncommon, or Highly Diverse Wetland Plant Communities (UWPC) received a designation of Region where appropriate.Wetlands listed in the *DE_Modifier* column are those polygons where a special Delaware modifier(s) has been added to reference unique ecological communities that may harbor rare, threatened or endangered (RTE) plants and animals. Some wetland polygons may have more than one Delaware modifier designation. These numeric codes and their associated ecological community types are: (2)Delaware Coastal Plain Seasonal Pond; (3)Atlantic White Cedar; (4)Bald Cypress; (5)Interdunal Swale; (6)Acidic Fen; (12)Groundwater Seepage Wetland (Black Ash, Amphibian, and/or Stream). Adjacent wetland polygons or wetland polygons with the potential to harbor RTE's may have been tagged as part of the mapping process. For more information on these modifiers, please contact the Delaware Natural Heritage and Endangered Species Program at 302-739-9124.Data is ENV_Saltwater_Tidal_Buffer Enterprise Geodatabase Feature Class made available from DNREC's Enterprise Geodatabase.
Copyright Text: This data was created in partnership with funding from both the U.S. Fish and Wildlife Service, National Wetlands Inventory (NWI) and the Delaware Department of Natural Resources and Environmental Control (DNREC). Virginia Tech's Conservation Management Institute (CMI) is the project contractor. Lead contact: DNREC -- Mark Biddle (302-739-9939) mark.biddle@state.de.us Other Project Principals: USFWS, NWI -- Ralph Tiner Virginia Tech CMI -- Kevin McGuckin
Description: Certain by-products of wastewater treatment, known as biosolids, and non-hazardous residuals from wastewater treatment, can be used, under certain circumstances, in limited agricultural applications. These uses are governed by Parts III and V of the Guidance and Regulations Governing the Land Treatment of Wastes (7 DE Admin. Code 7103). The biosolids and residuals data shows the location of areas in Delaware where agricultural utilization permits have been issued to allow for the land application of biosolids and non-hazardous waste residuals. BiosolidsSewage sludges that are solid, semisolid, or liquid residues generated during primary, secondary, or advanced treatment of sanitary sewage. Treated sewage sludge that has undergone an approved process to reduce pathogens, a process to reduce the attractiveness of the material to disease carrying vectors (flies, birds, rodents), and that meets regulatory limits for certain pollutants are known as biosolids. Biosolids are typically used as a fertilizer or soil amendment or are disposed of in a landfill.EPA regulations (40 CFR Part 503) establish the minimum national standards for the use and disposal of biosolids. EPA’s standards are incorporated into Delaware regulations. The state’s rules include additional requirements and safeguards that are not required in EPA standards.Non-Hazardous Waste ResidualsNon-hazardous residual materials from waste treatment that do not contain a sanitary waste component can be permitted for agricultural use under Part V of the Guidance and Regulations Governing the Land Treatment of Wastes. These wastes must meet regulatory limits for certain pollutants and must be suitable for use as a fertilizer substitute or as a soil amendment.This layer includes land application sites where non-hazardous waste residuals disposal (were beneficially reused may be a better phrase to describe “disposal” if this description goes on a public server) via land application have been approved. For sites where beneficial reuse of wastewater via spray irrigation has been approved please see the Spray Irrigation layer. For more information please visit https://dnrec.alpha.delaware.gov/water/surface-water/land-treatment/Data is ENV_Biosolids_Residuals Enterprise Geodatabase Feature Class made available from DNREC's Enterprise Geodatabase.
Copyright Text: Delaware Department of Natural Resources and Environmental Control Division of Water, Commercial and Government Services Section 89 Kings Highway, Dover, DE 19901 302-739-9946
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Description: The Large Systems Branch reviews and approves spray irrigation wastewater systems and onsite wastewater treatment and disposal systems with daily flows greater than 2,500 gallons per day. It oversees Underground Injection Control (UIC) wells and other forms of wastewater treatment. The permits are broken up into two categories, Septic-UIC and Septic-NonUIC. It was created as a reference and aid to internal staff, partnered agencies and to be shared with the public. this data is also used as a screen in division wide permitting processes.Data is ENV_LargeSystems Enterprise Geodatabase Feature Class made available from DNREC's Enterprise Geodatabase.
Copyright Text: Delaware Department of Natural Resources and Environmental Control, Division of Water
89 Kings Highway, Dover, DE 19901 302-739-9946
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Description: Groundwater Management Zones or "GMZs" delineate areas where the potential for degraded groundwater quality exists. Some GMZs place formal restrictions on well installations and groundwater usage. The GMZ coverage dates back to the 1990s, but it is periodically updated; therefore, the "publication date" corresponds with the date that the GMZ metadata was last updated.
Copyright Text: Delaware Department of Natural Resources and Environmental Control
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Description: Sussex County Landfill Groundwater Management Zones (GMZs) are In accordance with the March 20, 2000 Memorandum of Agreement between Sussex County and the DNREC (File No. LF-13.05-B). The GMZs were established to resolve water contamination issues posed by the landfills. The GMZs consist of three (3) concentric areas: No Wells zone - all wells prohibited from unconfined aquifer; Zone A - unconfined wells may be pumped no more than 10 gpm; and Zone B - unconfined wells may be pumped no more than 100 gpm.
Copyright Text: Weston Solution Inc.
Sussex County GIS
Description: This dataset is also made available on Delaware Open Data. Data DictionaryData is Enterprise Geodatabase View from the Delaware Environmental Navigator (DEN) database, ENV_Non_Public_Wells.
Copyright Text: Delaware Department of Natural Resources and Environmental Control (DNREC).
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Description: The stations included in this list do not include the mobile monitoring points used for air quality monitoring special studies. To learn more visit DNRECs website, https://dnrec.alpha.delaware.gov/air/.
Copyright Text: Delaware Department of Natural Resources and Environmental Control
Division of Air Quality
Air Monitoring Program
Division of Air Quality
302-323-4542
Description: Site Types removed:SFUND - Using SIRS Sites and SIRS Project polygons from RemediationSludgeApp - Using Biosolids and Residuals layer from Surface WaterTRI - Using Air Monitoring Stations sitesUSTanks - Using Leaking Underground Storage Tanks and Underground Storage Tanks.Please see the Permitting and Monitoring map service for most current data layers:https://enterprise.firstmap.delaware.gov/arcgis/rest/services/Environmental/Permitting_and_Monitoring/MapServer
Description: Polygons represent the site extent of industrial stormwater facilities that are permitted and monitored by the Division of Water at DNREC. This layer was created as apart of a Division of Water initiative to accurately map all permitted facilities and sites. Having locations for these sites allows for internal staff to gain institutional knowledge which is also helpful for partnered agencies and even the public.
Copyright Text: Delaware Department of Natural Resources and Environmental Control Division of Water, Commercial and Government Services Section 89 Kings Highway, Dover, DE 19901 302-739-9946
Description: A map containing polygons that represent areas where feasibility studies were conducted by licensed soil scientists and fall under the Residential Services Section.
Copyright Text: Department of Natural Resources and Environmental Control
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