File:20180221-OSEC-LSC-0055 (39518128545).jpg

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	08:18, 22 February 2018		8,256 × 5,504 (33.99 MB)	Junior Jumper	Transferred from Flickr via Flickr2Commons

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Environmental monitoring

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Image title	Chesapeake Bay Foundation Clagett Farm welcomes U.S. Department of Agriculture (USDA) Agricultural Outlook Forum (AOF) Farm Conservation Tour participants and gives them an overview of Clagett Farm and the conservation practices that have been implemented in partnership with Natural Resource Conservation Service (NRCS) in Upper Marlboro, Maryland, on Feb. 21, 2018. The foundation and NRCS staff will discuss the implementation process of conservation plans that address soil health, drainage solutions and farm road designs. U.S. Department of Agriculture (USDA) Natural Resource Conservation Service (NRCS) District of Columbia, Delaware, Maryland State Soil Scientist Phillip King demonstrates the deployment of the Olympus Delta Professional XRF hand-held device that determines the amount of metal contaminants within the soil. The contaminants of concern are lead, mercury, cadmium and arsenic. Once identified, a land owner can choose not to use the land or address the problem with a remedial activity. This technology provides an efficient and timely analysis for the customer so that they can make their land use decisions. Previously, aerial surveys and excavations were needed to get soil samples that were sent to laboratories for analysis. The increased use of surburban/urban interfaces for agricultural production is one of the reasons this device was brought into service is to detect metal content in soil that people may have put on the land. USDA Departmental Administration Radiation Safety Division Specialist Katina Jones, red shirt, takes advantage of the nearby XRF device demonstration to get some field measurements of natural radiation in the area and then near the device in various modes. No problems were detected. USDA Photo by Lance Cheung.
Camera manufacturer	NIKON CORPORATION
Camera model	NIKON D850
Exposure time	1/250 sec (0.004)
F Number	f/11
ISO speed rating	320
Date and time of data generation	10:26, 21 February 2018
Lens focal length	92 mm
Latitude	38° 49′ 11.03″ N
Longitude	76° 48′ 12.52″ W
Altitude	53 meters above sea level
Orientation	Normal
Horizontal resolution	300 dpi
Vertical resolution	300 dpi
Software used	Adobe Photoshop CC (Macintosh)
File change date and time	00:55, 22 February 2018
Exposure Program	Shutter priority
Exif version	2.21
Date and time of digitizing	10:26, 21 February 2018
APEX shutter speed	7.965784
APEX aperture	6.918863
APEX exposure bias	0
Maximum land aperture	4 APEX (f/4)
Metering mode	Pattern
Light source	Unknown
Flash	Flash fired, strobe return light detected, compulsory flash firing
DateTime subseconds	63
DateTimeOriginal subseconds	63
DateTimeDigitized subseconds	63
Color space	sRGB
Focal plane X resolution	2,301.3246154785
Focal plane Y resolution	2,301.3246154785
Focal plane resolution unit	3
Sensing method	One-chip color area sensor
File source	Digital still camera
Scene type	A directly photographed image
Custom image processing	Normal process
Exposure mode	Auto exposure
White balance	Auto white balance
Focal length in 35 mm film	92 mm
Scene capture type	Standard
Scene control	None
Contrast	Normal
Saturation	Normal
Sharpness	Normal
Subject distance range	Unknown
GPS time (atomic clock)	15:02
Satellites used for measurement	00
Geodetic survey data used	WGS-84
GPS date	21 February 2018
GPS tag version	0.0.3.2
Serial number of camera	3014896
Lens used	24.0-120.0 mm f/4.0
Rating (out of 5)	5
Date metadata was last modified	19:55, 21 February 2018
Label	Approved
Unique ID of original document	CBD27EBE32ADBF916FD13974119F2B85
Copyright status	Copyright status not set
Keywords	USDA Department of Agriculture U.S. Department of Agriculture Chesapeake Bay Foundation Clagett Farm Agricultural Outlook Forum; AOF Farm Conservation Tour Maryland Upper Marlboro conservation soil
Usage terms	www.usda.gov
Contact information	lance.cheung@oc.usda.gov www.flickr.com/photos/usdagov 1400 Independence Avenue, SW Washington, District of Columbia, 202150 USA