D--PINGMapper Python Programming Services

Questions and Answers 1. What specific outputs or modifications to PINGMapper are required beyond its current published capabilities? THOSE LISTED IN THE SCOPE OF WORK 2. What sonar hardware and data formats are used in the field data collection for this study? HUMMINBIRD SIDE SCAN SONAR USED TO COLLECT SONAR RECORDINGS; SPECIFIC SIDE SCAN SONAR UNIT USED FOR DATA COLLECTION IS HUMMINBIRD 710292-1 XM 14 HW MSI T SOLIX. THREE FILE FORMATS - .DAT .SON .IDX 3. Are there existing scripts, preprocessing workflows, or prior modifications to build upon, or would this work begin from PINGMapper's current baseline codebase? BEGIN FROM BASELINE PINGMAPPER CODE 4. Will the scientific interpretation of the sonar data, including determining what the analysis should show, be handled by the USGS team, with the contractor responsible for the code and technical implementation that produces those outputs? CONTRACTOR MUST BE CAPABLE OF INDEPENDENT ANALYSIS AND INTERPRETATION OF RESULTS 5. Would it be possible to share a sample of the raw sonar data, along with a description of the specific outputs required, so that we can properly size and scope the work for our quote? KLAMATH DATA HAS NOT BEEN PUBLISHED - EXAMPLES OF SIDE SCAN SONAR DATA, COLLECTED AT OTHER USGS FIELD SITES, CAN BE FOUND AND DOWNLOADED BY SEARCHING AT https://data.usgs.gov/ RFQ 140G0326Q0120 Am2 PINGMapper Python Programming Services Page 1 of 3 -- 1 of 3 -- 6. Are there any specific 'project manager' requirements in this case? Based on the documentation I did not find, but I would like to confirm. NO 7. Are there any specific requirements in terms of 'onsite' or other places to visit and travel? NO SITE VISITS OR TRAVEL 8. For the 'compute' of the project, does the vendor bring (and quote) his or her own, or is anything provided by the agency? Some tasks require computational power, and we typically lease it from Fed-approved Cloud Providers. VENDOR IS REQUIRED TO PROVIDE COMPUTING RESOURCES 9. Any additional requirements I should be mindful of. NO 10. For the 2025 GPS data, were the GNSS receiver and Hummingbird clocks synchronized to a centralized time reference during collection? If so, what was the method for synchronization? YES SYNCED USING GPS TIME 11. During the 2025 data collection, if the clocks were not synchronized, was there any documentation during collection on the magnitude of drift between the two device clocks. CLOCKS WERE SYNCED 12. For the 2025 GPS data, what GNSS receiver (make and model) was used, and what format was the data stored as? TRIMBLE R8/R10 BASE STATION AND R12 ROVER RFQ 140G0326Q0120 Am2 PINGMapper Python Programming Services Page 2 of 3 -- 2 of 3 -- 13. During the 2025 data collection, was the physical position offset between the sonar receiver and the GNSS receiver documented? YES, OFFSET WAS MEASURED 14. Are the 75 sites consistent across all three survey years, or did the site locations and/or boundaries change between surveys? THERE ARE A TOTAL OF 75 SITES WITH REPEAT SURVEYS WITH OVERLAPPING DATASETS. A PRE-DAM REMOVAL DATASET WAS COLLECTED IN 2022 and 2023, AND A POST-DAM REMOVAL DATASET WAS COLLECTED IN 2025. 15. How many individual sonar recordings (files) are there across the 75 sites and three survey years, and what is the approximate total data volume? THERE ARE A TOTAL OF 150 SCANS (~6GB of RAW DATA AND ~ 2GB of POST PROCESSED DATA) 16. Has any preliminary processing already been applied to the sonar recordings for any of the years, or will raw unprocessed files be delivered? YES, USGS POST-PROCESSED ALL DATASETS USING CURRENT VERSION OF PINGMAPPER 17. Were any of the surveys processed with any version of PINGMapper or any other processing software? If so, are those outputs available for reference? YES, USGS WILL SHARE ALL RAW AND POST-PROCESSED DATASETS 18. Are there any manually labeled substrate references along the Klamath that could be used to validate and calibrate the confidence thresholds developed in Task 1? YES, USGS WILL PROVIDE A SHAPEFILE WITH DIGITIZED LOCATIONS OF RIPPLE MARKS TO CALCULATE AN ACCURACY ESTIMATE FOR THE FINES RIPPLE CLASS RFQ 140G0326Q0120 Am2 PINGMapper Python Programming Services Page 3 of 3 -- 3 of 3 --