The NCREDC in conjunction with Hobbs, Upchurch & Associates developed the digital location and information of sewer treatment plants as mapped by individual system owners as required by contract. The data collected will facilitate planning, siting and impact analysis in the 70 individual counties of North Carolina. This file enables the user to make various county-level determinations when used in conjunction with other data layers. This data contains information on sewerage treatment plants as defined by NCREDC. Information includes: WWTP ID, original construction year, latest renovation date, permitted plant capacity, maximum daily flow, average daily flow, type of treatment, Sludge disposal technology, estimate of I/I and facility area in acres. Other coverages exist with sewer lines and other appurtenances.
This data was created to assist governmental agencies and others in making resource management decisions through use of a Geographic Information System (GIS).
The water and sewer data was collected in multiple phases. There is an associated owner and contact table (wsp2cont.dbf) for the phase 2 counties which include: Beaufort, Bertie, Bladen, Brunswick, Camden, Caswell, Chatham, Chowan, Columbus, Currituck, Dare, Duplin, Franklin, Gates, Granville, Greene, Halifax, Harnett, Hertford, Hoke, Hyde, Iredell, Jones, Lee, Lenoir, Lincoln, Martin, Montgomery, Moore, Northampton, Onslow, Pasquotank, Pender, Perquimans, Pitt, Richmond, Robeson, Sampson, Scotland, Stanly, Union, Vance, Warren, Washington and Wilson counties. 45 counties. Phase 1 counties included: Alexander, Alleghany, Ashe, Avery, Buncombe, Burke, Caldwell, Cherokee, Clay, Cleveland, Davie, Forsyth, Graham, Haywood, Henderson, Jackson, Macon, Madison, McDowell, Mitchell, Polk, Rutherford, Stokes, Surry, Swain, Transylvania, Watauga, Wilkes, Yadkin, and Yancey counties. 30 counties. For more information on the water and sewer systems attributes refer to: Geographic Data Content Standard for Water Distribution Systems and Sanitary Sewer Systems, Version 2.2; State of North Carolina; Center for Geographic Information and Analysis; 301 North Wilmington Street; Suite 700; Raleigh, NC 27601-2825; April 1997. This document is available online through the www.cgia.state.nc.us/gicc/index.html Geographic Information North Carolina, Geographic Information Coordinating Council Web Page. >system filename: streat approx. filesize = 0.1 mb > >Revisions and updates to this layer include: >1.) filename: streat698 The June 1998 file was the first >version of this data.
Data creation date
Acknowledgement of products derived form this data set should cite the following: The source of the Sewer Systems - sewer treatment plant data is the North Carolina Corporate Geographic Database. Earlier versions of this data set may exist. The user must be sure to use the appropriate data set for the time period of interest. While efforts have been made to ensure that these data are accurate and reliable within the state of the art, CGIA cannot assume liability for any damages or misrepresentation caused by any inaccuracies in the data or as a result of changes to the data caused by system transfers.
4021 Carya Drive
Phone and electronic mail preferred
>North Carolina Rural Economic Development Center > >Hobbs, Upchurch & Associates P.A. >290 S.W. Broad St. >Southern Pines, N.C. 28388 >910-692-5616 Phone >910-692-7342 FAX > >Participating Counties > >NCCGIA Director, Karen Siderelis >Database Administration, Zsolt Nagy >Database Management, Ken Shaffer >North Carolina Center for Geographic Information and Analysis >Governor's Office >Office of State Planning >301 North Wilmington Street, Suite 700 >Raleigh, NC 27601-2825
Hobbs, Upchurch & Associates digitized sewer treatment plant locations from various maps and GPS files. All tabular data was supplied by the owner or received by Public Sewer Supply information. For more information on data sources and contacts, see the "Owner and Contact Table".
Using ESRI's ArcCAD GIS software, the data set was built for nodal topology using the "build" command. Topology has not been edited since the last build or clean.
This data layer represents the sewer treatment plant locations and tabular data supplied by the owner of each system. For more information on data sources and contacts, see the "Owner and Contact Table".
Sewer treatment plants were heads-up digitized to match with the state supplied base mapping. In some cases actual GPS location points were used. The overall threshold however is 40 feet or less. All features were Verified by both HUA engineers as well as NCREDC for accuarcy. For more information on data sources and contacts, see the "Owner and Contact Table".
Owner supplied/HUA located
Sewer treatment plants were heads-up digitized onto state supplied base mapping.
4021 Carya Drive
Phone and electronic mail preferred
Hobbs, Upchurch & Associates digitized/compiled maps supplied by the participating counties. Also all tabular data was input into the CGIA supplied data standard. All heads-up digitizing was performed in AutoCAD R12-14/ArcCAD with NC DOT supplied road centerlines and hydro. Digital files were then converted into ArcView 3.0 Shape files with the appropriate dBase information. The data was completed in NAD83 Meters. Once compiled, the data was delivered to John Soles at NCREDC for review and supplied to the appropriate officials for each county for review for accurateness.
290 S.W. Broad St.
Phone and electronic mail preferred
Sewer treatment plants were mappjoined into one statewide GIS coverage using ARC/INFO GIS software. On-screen review of the data and attributes was performed by a GIS analyst to make sure the processing did not change the data. The draft metadata supplied by Hobbs, Upchurch and Associates was finalized for inclusion into the Corporate Geographic Database. An additional table containing source data contact and system owner information was created by HUA and has been incorporated into the data available through CGIA.
301 North Wilmington Street, Suite 700
Phone and electronic mail preferred
Metadata imported.
Internal feature number.
ESRI
Feature geometry.
ESRI
system identification number
Discharge #
area name/location
owner/HUA
year of construction
By owner / HUA
latest year of renovation
By owner / HUA
capacity in millions of gallons per day
By owner/ HUA
maximum daily flow in millions of gallons per day
By owner / HUA
average daily flow in millions of gallons per day
By owner / HUA
type of treatment technology
By owner / HUA
Treatment in facultative lagoons using 90 day detension time capable of meeting limits of below 60ppm BOD and 90ppm TSS
NCREDC
Treatment usually by mechanical means consisting of activated sludge or trickling filters followed by clarification and disinfection to meet limits of below 30ppm BOD and 30ppm TSS.
NCREDC
Treatment usually by mechanical means consisting of activated sludge followed by clarification and disinfection to meet limits of below 20ppm BOD, 30ppm TSS and ammonia removal below 5ppm.
NCREDC
Treatment usually by mechanical means consisting of activated sludge followed by clarification, filtration and disinfection to meet limits of below 5ppm BOD, 30ppm TSS and ammonia removal below 2ppm.
NCREDC
Treatment usually by mechanical means consisting of activated sludge followed by clarification, chemical or biological nutrient removal and disinfection to meet limits of below 20ppm BOD, 30ppm TSS and ammonia removal below 5ppm. Also reduction of total nitrogen and total phosphorus to levels below 5ppm.
NCREDC
Treatment usually by mechanical means consisting of activated sludge followed by clarification, chemical or biological nutrient removal and disinfection to meet limits of below 5ppm BOD, 30ppm TSS and ammonia removal below 2ppm. Also reduction of total nitrogen and total phosphorus to levels below 5ppm.
NCREDC
wastewater treatment process that utilizes pre-treatment lagoons with 60-90 day detention time prior to spray irrigating to designated permitted area at permitted application rate based on the soil characteristics.
NCREDC
any man made, engineered marsh-like which uses the chemical, physical and biological processes in nature such as emergent/submergent vegetation, animal life and open water to treat the wastewater.
NCREDC
High rate application of wastewater to a pervious surface area such as sand beds or permitted sandy areas following primary sedimentation. (i.e. peculation)
NCREDC
any mode of sewer treatment that does not fit the above defined standards.
NCREDC
Sludge disposal technology
By owner / HUA
estimate of Infiltration/Inflow measured at the plant in millions of gallons per day
By owner / HUA
approximate area of treatment facility in acres, excluding land application area extent
By owner / HUA
A point coverage depicting locations of sewer treatment plants in 70 rural counties. Fields including WTP ID, original construction year, latest renovation, permitted plant capacity, maximum daily flow, average daily flow, type of treatment, and facility area in acres. >STREAT.PAT Point Attribute Table >COLUMN ITEM NAME WIDTH OUTPUT TYPE DEC DESCRIPTION >1 AREA 4 12 F 3 Calculated Area >5 PERIMETER 4 12 F 3 Calculated Perimeter >9 STREAT# 4 5 B - Unique coverage feature number >13 STREAT-ID 4 5 B - User defined ID >17 SSTPID 7 7 C - System ID (Discharge Permit Number) >24 SSTPLOC 20 20 C - Location/Area name >44 SSTPCSTR 4 4 B - Original year of construction >48 SSTPRENV 4 4 B - Latest year of renovation >52 SSTPCPTY 4 7 F 3 Permitted capacity in MGD >56 SSTPMDPR 4 7 F 3 Maximum daily flow in MGD >60 SSTPADPR 4 7 F 3 Average daily flow in MGD >64 SSTPTRMT 100 100 C - Treatment technology >164 SSTPSLUD 50 50 C - Sludge disposal technology >214 SSTPINFT 4 7 F 3 Estimate of I&I >218 SSTPAREA 8 9 F 2 Approximate area at the treatment facility > >WSP2CONT.DBF Contact and Owner attribute table. >COLUMN ITEM NAME WIDTH OUTPUT TYPE DEC DESCRIPTION >1 COUNTY 3 3 C - County FIPS Code >4 FEATID 13 13 C - Feature ID for linking tables >17 SYSID 7 7 C - System Id number >24 OWNERID 5 5 C - HUA defined ID Number >29 OWNAME 50 50 C - Owner name >79 CONTACT 48 48 C - Contact name >127 PHONE 11 11 C - Contact phone number >138 DATA 103 103 C - Type of information collected >241 CITY 19 19 C - Contact city >260 ST 4 4 C - Contact state >264 ZIP 6 6 C - Contact zip code >270 ENGINEER_N 40 40 C - Name of HUA engineer >310 ENG_PHONE 12 12 C - HUA engineer phone number >HUA is Hobbs, Upchurch & Associates This table"Owner and Contact Table" can be used by performing a join with the fields FeatID and The feature ID field with any one of the themes (ie: Intakes, Wsysa, Etc.) The information in this table will tell who HUA contacted and the types of data received from that person or system.
Geographic Data Content Standard for Water Distribution Systems and Sanitary Sewer Systems, Version 2.2; State of North Carolina; Center for Geographic Information and Analysis; 301 North Wilmington Street; Suite 700; Raleigh, NC 27601-2825; April 1997. This document is available online through the www.cgia.state.nc.us/gicc/index.html Geographic Information North Carolina, Geographic Information Coordinating Council Web Page.
301 North Wilmington Street, Suite 700
Phone and electronic mail preferred For current price information use a web browser: COST INFORMATION - http://www.cgia.state.nc.us/cost.html
NCCGIA is charged with the development and maintenance of the State's corporate geographic database and, in cooperation with other mapping organizations, is committed to offering its users accurate, useful, and current information about the state. Although every effort has been made to ensure the accuracy of information, errors and conditions originating from physical sources used to develop the corporate database may be reflected in the data supplied. The client must be aware of data conditions and bear responsibility for the appropriate use of the information with respect to possible errors, original map scale, collection methodology, currency of data, and other conditions specific to certain data. NCCGIA does not support secondary distribution of this data. The use of trade names or commercial products does not constitute their endorsement by the NCCGIA or North Carolina State Government.
Data creation and large data analysis jobs contact Database Administration P:(919)733-2090. All data is available through standard ordering procedures on a cost recovery basis.
301 North Wilmington Street, Suite 700
Phone and electronic mail preferred