MD DNR Continuous Water Quality Monitoring Project 2003

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Metadata_Reference_Information

Identification_Information:      top

Citation:

Citation_Information:

Originator:

Maryland Department of Natural Resources, Resource Assessment Service (MD DNR RAS)

Publication_Date: 20040101

Title: MD DNR Continuous Water Quality Monitoring Project 2003

Geospatial_Data_Presentation_Form: Spatial dataset

Description:

Abstract:

Water quality at twenty-two Maryland shallow water sites located on Chesapeake Bay tributaries was monitored during 2003. YSI 6600 data loggers sampled seven environmental parameters: water temperature, salinity, dissolved oxygen concentration, oxygen percent saturation, pH, turbidity, and fluorescence. Each parameter was sampled at 15-minute intervals. The number of days data were collected at individual stations ranged from 62 and 354.

Data loggers were exchanged weekly.

When data loggers were exchanged, water samples for pigments, nutrients and suspended solids were collected for later analysis. Secchi disk depth was measured and HydroLab CTD casts were made at the same time.

Purpose:

The Maryland Department of Natural Resources Shallow Water Monitoring program is part of a cooperative effort between the Federal government and State and local governments in the Chesapeake Bay watershed to assess the ambient water quality criteria for dissolved oxygen, chlorophyll and water clarity in shallow water habitats.

Shallow water monitoring data describes the 2003 state of twenty-two shallow water sites on Chesapeake Bay tributaries using key water quality indicators.

The information is integrated with data from other Bay water quality stations and living resources monitoring projects and used to understand linkages, temporal variation and long-term trends.

Water quality data are used to refine, calibrate and validate Chesapeake Bay ecological models. The models are used to develop and assess water quality criteria with the goal of removing the Chesapeake Bay and its tidal rivers from the list of impaired waters.

Supplemental_Information:

The target audiences for this information include Resource Managers, Technical/Scientific Users, Government, Educators, Students and General Public.

Data users who desire very detailed information about Water Quality Monitoring data-definition, sampling-procedures and data-processing are encouraged to refer to the two documents listed below. The documents may be obtained from The Chesapeake Bay Program Office.

Water Quality Database - Database Design and Data Dictionary Prepared For: U.S. Environmental Protection Agency, Region III, Chesapeake Bay Program Office, January 2004.[<http://www.chesapeakebay.net/pubs/cbwqdb2004_RB.PDF>]

Quality Assurance Project Plan for the Maryland Department of Natural Resources Chesapeake Bay Shallow Water Monitoring Program for the period April 1, 2003 - June 30, 2004.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20030101

Ending_Date: 20031231

Currentness_Reference: Ground condition

Status:

Progress: Complete

Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -79.4938

East_Bounding_Coordinate: -75.0405

North_Bounding_Coordinate: 39.7425

South_Bounding_Coordinate: 37.8713

Keywords:

Theme:

Theme_Keyword_Thesaurus:

Olsen, L.M., G. Major, S. Leicester, K. Shein, J. Scialdone, H. Weir, S. Ritz, C. Solomon, M. Holland, R. Bilodeau, T. Northcutt, R. Vogel. 2004. NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version 4.2.2 [online: <http://gcmd.nasa.gov/Resources/valids/keyword_list.html>]

Theme_Keyword:

EARTH SCIENCE > Biosphere > Aquatic Habitat > Estuarine Habitat

Theme_Keyword:

EARTH SCIENCE > Biosphere > Aquatic Habitat > Rivers/Stream Habitat

Theme_Keyword:

EARTH SCIENCE > Biosphere > Ecological Dynamics > Nutrient Cycling

Theme_Keyword:

EARTH SCIENCE > Biosphere > Ecological Dynamics > Primary Production

Theme_Keyword: EARTH SCIENCE > Hydrosphere > Surface Water > Rivers/Streams

Theme_Keyword:

EARTH SCIENCE > Hydrosphere > Water Quality/Water Chemistry > Chlorophyll

Theme_Keyword:

EARTH SCIENCE > Hydrosphere > Water Quality/Water Chemistry > Conductivity

Theme_Keyword:

EARTH SCIENCE > Hydrosphere > Water Quality/Water Chemistry > Nitrogen Compounds

Theme_Keyword:

EARTH SCIENCE > Hydrosphere > Water Quality/Water Chemistry > Nutrients

Theme_Keyword:

EARTH SCIENCE > Hydrosphere > Water Quality/Water Chemistry > Oxygen

Theme_Keyword:

EARTH SCIENCE > Hydrosphere > Water Quality/Water Chemistry > pH

Theme_Keyword:

EARTH SCIENCE > Hydrosphere > Water Quality/Water Chemistry > Phosphorous Compounds

Theme_Keyword:

EARTH SCIENCE > Hydrosphere > Water Quality/Water Chemistry > Suspended Solids

Theme_Keyword:

EARTH SCIENCE > Hydrosphere > Water Quality/Water Chemistry > Turbidity

Theme_Keyword:

EARTH SCIENCE > Hydrosphere > Water Quality/Water Chemistry > Water Temperature

Place:

Place_Keyword_Thesaurus: Producer Defined

Place_Keyword: United States

Place_Keyword: Maryland

Place_Keyword: Chesapeake Bay Watershed

Place_Keyword: Anne Arundel County

Place_Keyword: Baltimore County

Place_Keyword: Dorchester County

Place_Keyword: Harford County

Place_Keyword: Howard County

Place_Keyword: Prince George's County

Place_Keyword: Queen Anne's County

Place_Keyword: Bush River

Place_Keyword: Chester River

Place_Keyword: Chicamacomico River

Place_Keyword: Gunpowder River

Place_Keyword: Magothy River

Place_Keyword: Middle River

Place_Keyword: Patuxent River

Place_Keyword: Severn River

Place_Keyword: Transquaking River

Access_Constraints: None

Use_Constraints: None

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Christopher Heyer

Contact_Position: Project Leader

Contact_Address:

Address_Type: Mailing Address

Address: Tawes State Office Building, 580 Taylor Avenue, D2

City: Annapolis

State_or_Province: MD

Postal_Code: 21401

Contact_Voice_Telephone: 410 260-8630

Contact_Electronic_Mail_Address:

CHEYER_nospam_@dnr.state.md.us[Remove _nospam_ for valid email address]

Browse_Graphic:

Browse_Graphic_File_Name: MDDNRCMon03Stns.jpg

Browse_Graphic_File_Description:

Map of twenty-two 2003 Continuous Monitoring Sites [<http://www.chesapeakebay.net/comet_uploads/7425/MDDNRCMon2003Stns2.jpg>]

Browse_Graphic_File_Type: jpg

Data_Set_Credit:

Maryland Department of Natural Resources (MDDNR) Resource Assessment Service (RAS) staff collected the samples and processed the data. The Maryland Department of Mental Health and Mental Hygiene (DHMH) analyzed pigments and turbidity samples. The Nutrient Analytical Services Laboratory (NASL) at the Chesapeake Biological Laboratory (Univ. of MD) analyzed nutrient and suspended solids samples.

The project was made possible with funding provided by The State of Maryland, the United States Environmental Protection Agency Chesapeake Bay Program, the National Atmospheric and Oceanic Administration Chesapeake Bay Program Office, the National Atmospheric and Oceanic Administration National Estuarine Research Reserve System program and Harford County Maryland.

Data_Quality_Information:      top

Attribute_Accuracy:

Attribute_Accuracy_Report:

Quality Assurance/Quality control. MD DNR followed specific procedures to ensure that the Shallow Water Quality Monitoring Program project design was properly implemented and managed with sufficient accuracy, precision and detection limits. Accuracy (closeness to the true value) of collected data was controlled and assured by the proper use, calibration and maintenance of both field and laboratory equipment for the measurement of physical and chemical parameters.

The YSI 6600 sondes were configured with the following probes: 6560, 6562, 6025, and 6136. Resolution, range and accuracy specifications for the sonde and probes may be obtained from the manufacturer. [<http://www.ysi.com/environmental-monitoring/data-acquisition.htm]>.

The procedures to control and assure the accuracy of field measurements involved the calibration of field instruments, the verification of calibrations, equipment maintenance, and collection of filter blanks. Most of the details of how data acquired with YSI sondes were quality assured and quality controlled are described in the process description elements in the Lineage portion of this metadata record. The results of the water quality attributes analyzed in the laboratories were also used to calibrate and crosscheck the sonde data for accuracy.

Daily quality control checks (including the running of blanks and standards) were used to control and assure laboratory accuracy.

Accuracy of laboratory results was also assessed through DNRâs participation in the Chesapeake Bay Coordinated Split Sample Program (CSSP), a split sampling program in which five laboratories involved in Chesapeake Bay monitoring analyze the coordinated split samples. CSSP was established in June 1989 to establish a measure of comparability between sampling and analytical operations for water quality monitoring throughout the Chesapeake Bay and its tributaries. DNR followed the protocols in the Chesapeake Bay Coordinated Split Sample Program Implementation Guidelines (EPA 1991) and its revisions. Split samples were collected quarterly. Results were analyzed by appropriate statistical methods to determine if results differed significantly among labs. If a difference occurred, discussions began regarding techniques and potential methods changes to resolve discrepancies.

Additionally, CBL and DHMH participated two times per year in the United States Geologic Survey (USGS) reference sample program.

Logical_Consistency_Report:

Two of the attributes in the water quality data set are PARAMETER and VALUE. In cases where PARAMETER value is âSIGMA_Tâ and the VALUE measurement in the record is as negative number, the number should be considered unreliable.

Completeness_Report:

Data from 22 continuous monitoring stations are available on-line.

The 2003 project dataset includes twelve months of sonde records from the continuous monitoring site named Sherwood Forest. The sites named Whitehurst, Otter Point Creek, Mataponi, Jug Bay, Iron Pot Landing, and Stonington were sampled for nine months. The sites at Strawberry Point and Ben Oaks were sampled for eight months. The Lauderick Creek and Aberdeen Proving Ground sites were sampled for seven months. The sites at Benedict, Chesapeake Biological Laboratory, Kings Landing, Pin Oak, Rolph's Wharf and Deep Landing were sampled for six months. Elliot Island and Drawbridge were sampled for five months. The Bestpitch and Cutter Marina were sampled for four months and the Mariner Point Park site was sampled for three months.

The user may discover a few interruptions in sonde datasets. With one exception, these interruptions were related to short-term problems with sonde operation.

The interruption at the Otter Point Creek site between 20030902 and 20031014 was due to the sonde not being deployed while the pier from which it was deployed was under re-construction.

All other missing attribute values were removed because the data were determined to be unreliable during the quality control process.

Lineage:

Process_Step:

Process_Description:

SONDE CALIBRATION and POST-CALIBRATION

The Yellow Springs Instrument (YSI) 6600 data sondes were maintained and calibrated before and after each deployment in accordance with YSI recommendations. [<http://www.ysi.com/environmental-monitoring/data-acquisition.htm]>.

FIELD MEASUREMENTS AND SAMPLING

The continuous monitoring sensors at the site recorded seven water quality parameters every 15 minutes. Data were uploaded to DNRâs web site [<http://www.eyesonthebay.net>] shortly after retrieval.

The seven water quality parameters measured continuously were water temperature, specific conductance, salinity, dissolved oxygen, turbidity (NTU), fluorescence (used to estimate chlorophyll a) and pH. Sondes were located at a constant depth of one meter below the surface of the water for most stations, although some stations were fixed at 0.3 m above the bottom.

The monitoring station was equipped with a YSI 6600 sonde. The sonde logged data onto an internal memory, where it was stored until retrieval. Some stations were equipped with cellular telemetry units, which allowed data to be transmitted hourly to a server computer at DNR. Sondes were deployed inside of four-inch diameter PVC pipes with several two-inch holes drilled along their length to allow for water exchange. Depending on location, sondes were either suspended from a float (1.0 m below surface) or fixed (0.3 m above bottom) resting on stop bolt.

WATER QUALITY CALIBRATION SAMPLES:

Each time sondes were exchanged at each Continuous Monitoring station, "Grab" water quality samples were collected at meter depth using a horizontal "Alpha" water sampler. A meter depth HydroLab sonde measurement was taken at the time the water was collected.

Numbered two quart bottles were triple-rinsed and filled with water for "whole" and "filtered" nutrient and chlorophyll samples. A labeled sixteen-ounce bottle was triple-rinsed and filled with water for turbidity analysis.

Nutrient, pigment and suspended-solid water-samples were filtered on station or shortly thereafter. Sample waters and filters were placed on ice immediately after filtration.

Particulate samples included: Chlorophyll, Particulate Carbon, Particulate Nitrogen, Particulate Phosphorus (PP), Particulate Inorganic Phosphorous (PIP), Total Suspended Solids (TSS) and Volatile Suspended Solids (VSS).

Filtrate collected from TSS/VSS or PP/PIP filtrations was used for dissolved nutrient samples. Total Dissolved Nitrogen and Total Dissolved Phosphorus, Nitrate, Nitrite, Ammonia, Orthophosphate, Silicate and Dissolved Organic Carbon samples were collected.

HYDROLAB PROFILE:

The first reading of the HydroLab water-column profile at each station was recorded at the same time the water quality "grab" sample was collected. After the meter depth record was logged, the sonde was lowered to the bottom. A reading was taken at 0.3-meters above the bottom. The sonde was raised and measurements were recorded at 0.5-meter or 1.0-meter increments until it reached the surface. (In cases where station depth was greater then 3-meters, the sonde was raised in 1-meter increments).

SECCHI DEPTH:

Secchi Disk Depth was measured each time sondes were exchanged. Readings with the secchi disk were made in-situ without the aid of sunglasses. The secchi disk was lowered into the water and the depth at which it is no longer visible is recorded. The time at which the reading was taken was noted. This facilitated later matching of secchi depth readings with transmissometer and turbidity data.

PAR MEASUREMENT:

Underwater Photosynthetically Active Radiation (PAR, 400-700nm)

When meters were exchanged at a site, down-welling light penetrating the water column (PAR) was measured underwater at several depths to calculate the light attenuation coefficient, Kd. Simultaneous surface and submersed PAR intensity measurements were taken to account for variability in incident surface irradiance due to changes in cloud cover. Data collected from this procedure was used to estimate the depth of the photic zone.

The equipment used was manufactured by LI-COR, Inc. and consisted of a LI-192SA, flat cosine Underwater Quantum Sensor, a LI-190SA air (deck) reference sensor and a Data Logger (LI-1000 or LI-1400).

Surface and underwater readings were recorded simultaneously. Readings were allowed to stabilize before being recorded. If the station depth was less than 3 meters, readings were taken at 0.1 meter and at 0.25-meter intervals until 10% for the 0.1-meter reading was reached. If the station depth was greater than 3 meters, a reading was taken at 0.1-meter and at 0.5-meter intervals until 10% of the 0.1-meter reading was reached.

SONDE DATA CHECKS

The continuous monitoring sondes were retrieved, calibrated and replaced weekly from to May to November. At each deployment, sondes were replaced with clean, recalibrated units and data from the data loggers were downloaded to a computer.

In the field, before an instrument was replaced, field staff allowed both the new (freshly calibrated) sonde and the old (deployed) sonde to log 2 readings (15 minutes apart) side by side at the same depth. In addition, for one of the readings, data were recorded from a discrete instrument -usually a HydroLab sonde. This three-way comparison assured that the "new" and "old" sondes were both reading each parameter within a certain tolerance. The HydroLab reading was used as a "double-check," and since it is a discrete reading, it allowed staff to watch the display and note whether the parameters were fluctuating or stable.

EcoWatch software (a YSI product) was used to calibrate the instruments as well as to upload and view data collected. Data downloaded from the sonde were subjected to quality assurance/quality control checks to ensure that values outside the range of possibility were not displayed on the DNR web site.

Data were evaluated using both three-way in-situ comparison results and data from sonde calibrations. The comparison tolerances were as follows - for both pre- post- calibration and in-situ comparisons: Temperature (deg C) +- 0.2; Specific Conductance (uM/cm) +- 5%; Dissolved Oxygen (mg/l) +- 0.5 mg/l; pH +- 0.2; Turbidity (NTU) +- 5%; Chlor +- 5%.

Excessive drift between pre- and post- calibration values of sonde probes, variance from in situ measurements or probe failures caused data to be flagged. When post-calibration drift exceeded the limits stated above in both the post-calibration and the in-situ comparables, the "bad data" were masked within the data set with an error code (see QAPP or list).

SONDE FILE POST-PROCESSING:

Each "raw" .csv file of sonde data was post-processed using an Excel Macro. The file was opened and renamed. Rows of data acquired before and after deployment were deleted. Records (if any) were also deleted if instrument error codes indicated "garbage" data. The macro rearranged columns and inserted error-tracking columns and headings. Macro instructions flagged negative values, missing values and highlighted values outside each parameterâs normal range. The macro also returned a report summarizing exceedances. Event and instrument information was appended to each record.

Flagged values were evaluated. Common anomalies included spikes in fluorescence and turbidity, dips in specific conductance, extremely high dissolved oxygen readings. Instrument post-calibration results, in situ comparisons with HydroLab, LI-COR readings, historical data from near-by locations and, survey crew remarks were used to determine whether sensor values were acceptable.

In cases where data were determined to be unreliable, the reason(s) values were determined to be unacceptable were documented with error codes and comments. Unreliable data were masked. No data were discarded. Only data considered reliable were published in reports.

Field staff and Tawes Office staff reviewed continuous monitoring data weekly. If a problem was identified, a field team member was dispatched to replace the instrument as soon as possible.

VERIFICATION AND DATA MANAGEMENT

At the end of the monitoring season, DNR Tawes Office and Field Office personnel conducted additional data QA/QC procedures. All of the data were plotted and outliers and anomalous values were thoroughly researched. Staff compared unusual values to historic values from the site and values from nearby sites in the Bay. Weather events were considered, event logs were reviewed and with field staff were consulted regarding possible legitimate causes for the values. In cases where values were not legitimate, they were masked within the published dataset with an error code and the approval of the field staff and the Quality Assurance Officer.

Process_Date: Unknown

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Sally Bowen

Contact_Position: Project Chief, Monitoring Field Office, DNR

Contact_Address:

Address_Type: mailing and physical

Address: 1919 Lincoln Drive

City: Annapolis

State_or_Province: Maryland

Postal_Code: 21401

Country: USA

Contact_Voice_Telephone: 410 2630-3369

Contact_Electronic_Mail_Address:

SBOWEN_nospam_@dnr.state.md.us[Remove _nospam_ for valid email address]

Process_Step:

Process_Description:

Laboratory analysis -MD DHMH. Turbidity samples were analyzed by Maryland Department of Health and Mental Hygieneâs (DHMH) Environmental Chemistry Division. Active chlorophyll a for all grab samples, except samples collected at four sites on the lower Patuxent River, was analyzed by DHMH.

Further information about laboratory analytical procedures may be obtained from the "Process_Contact".

Process_Date: Unknown

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Asoka Katumuluwa

Contact_Position:

Chief, Division of Environmental Chemistry, Laboratory Administration, Maryland Department of Health and Mental Hygiene

Contact_Address:

Address_Type: mailing and physical

Address:

Department of Health and Mental Hygiene, 201 West Preston Street

City: Baltimore

State_or_Province: Maryland

Postal_Code: 21201

Country: USA

Contact_Voice_Telephone: 410 767-5839

Contact_Electronic_Mail_Address:

KatumuluwaA_nospam_@dhmh.state.md.us[Remove _nospam_ for valid email address]

Process_Step:

Process_Description:

Laboratory analysis -CBL University of Marylandâs Chesapeake Biological Laboratory (CBL), Nutrient Analytical Services Laboratory analyzed total dissolved nitrogen, particulate nitrogen, nitrite, nitrite + nitrate, ammonium, total dissolved phosphorus, particulate phosphorus, particulate inorganic phosphorus, orthophosphate, dissolved organic carbon, particulate carbon, silicic acid, total suspended solids, and volatile suspended solids. Chlorophyll a for the lower Patuxent River sites: Benedict, Chesapeake Biological Laboratory, Kings Landing, and Pin Oak were analyzed at CBL.

Further information about laboratory analytical procedures may be obtained from the "Process_Contact".

Process_Date: Unknown

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Carl Zimmerman

Contact_Address:

Address_Type: mailing and physical

Address:

Chesapeake Biological Laboratory, Center for Environmental and Estuarine Studies, The University of Maryland System, 1 Williams St; P.O. Box 38

City: Solomons

State_or_Province: Maryland

Postal_Code: 20688

Country: USA

Contact_Voice_Telephone: 410 326-7252

Contact_Electronic_Mail_Address:

carlz _nospam_@cbl.umces.edu[Remove _nospam_ for valid email address]

Spatial_Data_Organization_Information:      top

Indirect_Spatial_Reference:

Bush River, Chester River, Chicamacomico River, Gunpowder River, Magothy River, Middle River, Patuxent River, Severn River, Transquaking River, Maryland, USA

Direct_Spatial_Reference_Method: Point

Spatial_Reference_Information:      top

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.0001

Longitude_Resolution: 0.0001

Geographic_Coordinate_Units: Decimal degrees

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1983

Ellipsoid_Name: Geodetic Reference System 80

Semi-major_Axis: 6378137

Denominator_of_Flattening_Ratio: 298.257

Entity_and_Attribute_Information:      top

Overview_Description:

Entity_and_Attribute_Overview:

This metadata record is a description of a continuous monitoring project. Project data are an aggregation of data collected at twenty-two Maryland stations during 2003.

The data are contained in four related entities (tables): Station_Information, Monitoring_Event_Data, Water_Quality_Data and CMON_DATA. Each table contains attributes (fields).

The entity Station_Information is comprised of the attributes: STATION, DESCRIPTION, WATER_BODY, CBP_BASIN, TS_BASIN, BASIN, CBSEG_1985, CBSEG_1998, CBSEG_1998_DESCRIPTION, HUC8, CATALOGING_UNIT_DESCRIPTION, HUC11, WATERSHED, FIPS, STATE, COUNTY/CITY, FALL_LINE, LATITUDE, LONGITUDE, LL_DATUM, UTM_X, and UTM_Y.

The entity Monitoring_Event_Data is comprised of the attributes: EVENT_ID, SOURCE, AGENCY, PROGRAM, PROJECT, STATION, EVENT_START_DATE, EVENT_START_TIME, CRUISE, TOTAL_DEPTH, UPPER_PYCNOCLINE, LOWER_PYCNOCLINE, AIR_TEMP, WIND_SPEED, WIND_DIRECTION, PRECIP_TYPE, TIDE_STAGE, WAVE_HEIGHT, CLOUD_COVER, GAGE_HEIGHT, PRESSURE, FLOW_STAGE, and DETAILS.

The entity Water_Quality_Data is comprised of the attributes: EVENT_ID, SOURCE, PROJECT, STATION, SAMPLE_DATE, SAMPLE_TIME, DEPTH, LAYER, SAMPLE_TYPE, SAMPLE_ID, PARAMETER, QUALIFIER, VALUE, UNIT, METHOD, LAB, PROBLEM, DETAILS, TOTAL_DEPTH, UPPER_PYCNOCLINE, LOWER_PYCNOCLINE, LAT, and LONG values.

The entity CMON_DATA is comprised of the attributes: Dissolved Oxygen, percent Oxygen Saturation, Salinity, Temperature, pH, Turbidity and Chlorophyll.

Entity_and_Attribute_Detail_Citation:

Water Quality Database - Database Design and Data Dictionary Prepared For: U.S. Environmental Protection Agency, Region III, Chesapeake Bay Program Office, January 2004.[<http://www.chesapeakebay.net/pubs/cbwqdb2004_RB.PDF>]

Quality Assurance Project Plan for the Maryland Department of Natural Resources Chesapeake Bay Shallow Water Monitoring Program for the period April 1, 2003 - June 30, 2004.

Metadata_Reference_Information:      top

Metadata_Date: 20050126

Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Ben Cole

Contact_Address:

Address_Type: Mailing and physical address

Address: Maryland Department of Natural Resources, D-2

City: Annapolis

State_or_Province: MD

Postal_Code: 21401

Contact_Voice_Telephone: (410) 260-8630

Contact_Electronic_Mail_Address:

bcole_nospam_@dnr.state.md.us[Remove _nospam_ for valid email address]

Metadata_Standard_Name: Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998