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Expired Broad Agency Announcement:


3DEP FY14 BAA for FY15 Awards (Expired Solicitation G14PS00574)


As outlined in the White House FACT SHEET: Taking Action to Support State, Local, and Tribal Leaders as They Prepare Communities for the Impacts of Climate Change (July 16, 2014), The Department of the Interior's U.S. Geological Survey and other Federal agencies are launching a 3D Elevation Program (3DEP) partnership designed to bring Federal agencies, academia, corporate entities, states, tribes, and communities together to develop advanced 3-dimensional mapping data of the United States. These data and related tools will be used in the areas of flood risk management, water resource planning, mitigation of coastal erosion and storm surge impacts, and identification of landslide hazards as an essential component of supporting action on climate resilience. 3DEP data are critical to many more applications, as documented in The National Enhanced Elevation Assessment.

As a follow-up, on July 18, 2014, the USGS issued a Broad Agency Announcement (BAA) that provides detailed information on how to partner with the USGS and other Federal agencies to acquire high-quality 3D data. The BAA was last modified on Dec. 3, 2014 (Amendment 8). Information and contacts are now available at Fed Biz Opps and Grants.gov (Search for Reference Number: G14PS00574). Offerors may contribute funds toward a USGS lidar data acquisition activity via the Geospatial Products and Services Contracts or they may request 3DEP funds toward a lidar data acquisition activity where the requesting partner is the acquiring authority.

Federal agencies, state and local governments, tribes, academic institutions and the private sector are eligible to submit pre-proposals. Reference materials associated with the Broad Agency Announcement are available below:

3DEP FY14 BAA for FY15 Awards Reference Materials (EXPIRED)

The USGS issued a Broad Agency Announcement (BAA) that provides detailed information on how to partner with the USGS and other Federal agencies to acquire high-quality 3D data. The BAA was modified on Dec. 3, 2014 (Amendment 8). Information and contacts are now available at Fed Biz Opps and Grants.gov (Search for Reference Number: G14PS00574). Offerors may contribute funds toward a USGS lidar data acquisition activity via the Geospatial Products and Services Contracts or they may request 3DEP funds toward a lidar data acquisition activity where the requesting partner is the acquiring authority. Federal agencies, state and local governments, tribes, academic institutions and the private sector are eligible to submit pre-proposals.

 

The purpose of this webpage is to provide reference materials cited in the BAA Section IV: PRE-PROPOSAL REVIEW INFORMATION:

 

3D Elevation Program: Priority Areas for Lidar Acquisition FY15 and Status of 3DEP Data Acquisition

  Elevation Requirements and Planning 15 August 2014

 



The deliverables for any given project must conform to the most current published USGS product specification for lidar and derived products, USGS Lidar Specification Version 1.0, which can be found at http://pubs.usgs.gov/tm/11b4/ and incorporating the changes in specification version 1.1. The changes between version 1.0 and version 1.1 are documented below.

Changes Between Version 1.0 and Version 1.1


  1. For clarification, numerous sections of the specification have been editorially revised, and there has been minor reorganization of the document.

  2. Glossary definitions have been updated to align with those in the new American Society for Photogrammetry and Remote Sensing (ASPRS) Positional Accuracy Standards for Digital Geospatial Data (American Society for Photogrammetry and Remote Sensing, 2014) and other industry publications, and several new definitions have been added. Notable among these are:

    • Aggregate Nominal Pulse Density (and Spacing)
    • Bridge and Culvert
    • Vegetated (and Nonvegetated) Vertical Accuracy
    • Percentile


  3. Coincident with this revision of the specification, ASPRS also developed its own Positional Accuracy Standards for Digital Geospatial Data (American Society for Photogrammetry and Remote Sensing, 2014). With regard to elevation data, the new standards redefine how elevation accuracy is described and reported, and although any accuracy could be its own accuracy “class”, a number of common classes are explicitly defined. The previous ASPRS vertical accuracy standard (American Society for Photogrammetry and Remote Sensing, 1990) was based on contour interval (usually expressed in feet [ft]), resulting in noninteger accuracy thresholds when converted to the metric units typically used with lidar (for example, 9.25 centimeters [cm]). The new ASPRS standard abandons the dependency on contour interval and is based entirely in metric units; its common classes are integer (for example, 10.0 cm). The NEEA QL definitions used common accuracy classes based on the earlier accuracy definitions and, to eliminate confusion about accuracy requirements as 3DEP moves forward, the QL accuracy definitions were adjusted to match the new ASPRS classes. Another quality level, QL0, was added as a placeholder for the higher quality data anticipated with future advances in lidar technology. The requirements stated for QL0 are somewhat arbitrary and are subject to change in future revisions of this specification. The changes relevant to lidar data QLs in this revision of the specification are as follows:

    • QL0 was added with accuracy of 5.0 cm Root Mean Square Error in z (RMSEz) and density of 8 pulses per square meter (pls/m2). This accuracy aligns with the ASPRS 5-cm Vertical Accuracy Class.
    • QL1 accuracy was changed from 9.25 cm RMSEz to 10.0 cm RMSEz. This accuracy does not correspond directly to any ASPRS accuracy class; it is a hybrid of QL2 accuracy and QL0 pulse density.
    • QL2 accuracy was changed from 9.25 cm RMSEz to 10.0 cm RMSEz. This accuracy aligns with the ASPRS 10-cm Vertical Accuracy Class.
    • QL3 accuracy was changed from 18.5 cm RMSEz to 20.0 cm RMSEz and density was changed from 0.7 pls/m2 to 0.5 pls/m2. This accuracy aligns with the ASPRS 20-cm Vertical Accuracy Class.


  4. Also to align with the new ASPRS accuracy standards, accuracy is reported based on Nonvegetated Vertical Accuracy (NVA) and Vegetated Vertical Accuracy (VVA). These two classes replace the previously used Fundamental, Supplemental, and Consolidated Vertical Accuracy (FVA, SVA, and CVA) classes.


  5. The new ASPRS standards include recommendations tying the quantity of vertical accuracy check points required for a project to the areal extent of the project. Adherence to these recommendations is required by this specification.


  6. QL2 has been established as the minimum required QL for new USGS-NGP lidar data collections.


  7. Relative accuracy requirements for lidar data, within swath (intraswath) and between overlapping swaths (interswath) have been refined and established for each QL. A more detailed methodology for assessing and reporting these metrics is provided.


  8. Lidar point data delivery is required in LAS v1.4 (American Society for Photogrammetry and Remote Sensing, 2011), Point Data Record Format 6, 7, 8, 9, or 10. Proper use of the Overlap and Withheld bit flags is required.


  9. The block of lidar-specific metadata tags recommended in the previous version of this specification has been modified to reflect the other updates to the specification. The inclusion of this block is required in all lidar point data eXtensible Markup Language (XML) metadata files.


  10. The 2 gigabyte (GB) limit on swath file size has been removed, although the method for splitting large swath files remains in the specification for use in situations where a data producer needs to produce smaller files.


  11. The test area for assessing classification accuracy was changed from 1 kilometer square to 1 square kilometer.


  12. Two additional point classification types are required:
    • Class 17, Bridges
    • Class 18, High Noise


  13. Anticipating that projects will more frequently use multiple coverage collection (for example, overlap greater than 50 percent) to achieve the higher required pulse density, terminology and requirements for this data organization have been added.


  14. Requirements for datum and coordinate reference systems have been refined and clarified.


  15. Development and delivery of breaklines is required for all hydro-flattened water bodies, regardless of the methodology used by the data producer for hydro-flattening.


  16. Requirements and guidelines for flightline overlap and scan angle limits have been removed. Data producers are cautioned to be more rigorous about gaps in and the relative accuracy of the point cloud data.


 


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