140R3025R0002_-_Attachment_4_-_Questions_and_Answers_0001.pdf
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- Attached to
- Lake Mohave Razorback Sucker Monitoring
- Solicitation number
- 140R3025R0002
About this file
This is a Questions and Answers document for solicitation 140R3025R0002 regarding Lake Mohave Razorback Sucker (RASU) Monitoring for the Bureau of Reclamation. The Q&A provides technical specifications for monitoring equipment and procedures, including: 134.2 kHz passive integrated transponder tags (12mm) manufactured by Biomark, trammel netting requirements (150-300 foot nylon nets with 1.5 inch inner mesh), and larval collection methods using 12-volt underwater halogen fishing lights.
Key operational details include that all monitoring techniques must be non-lethal, submerged scanners must be capable of reading 134.2 kHz PIT tags, net sets can fish overnight with 14-16 hour soak times, and larval collection involves placing lights 6-12 inches underwater to attract larvae for dipnetting into holding buckets. The document specifies that meetings related to this work will require 24-36 hours annually, and population monitoring should reference past estimates for comparison purposes.
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Text version
140R3025R0002 MSCP Lake Mohave RASU Monitoring Question # Offeror Question BOR Responses
PWS, Page 4, Section 2.1, Bullet Point 5: What as the specs of these? Manufacturer, size, etc.
134.2 kHz passive integrated transponder 12 mm tag manufactured and sold by Biomark, Boise, ID
PWS, Page 4, Section 2.1, Bullet Point 7: What is the survey type? Trammel net, larval or to be determined? Trammel netting
PWS, Page 4, Section 2.1, Bullet Point 9: Is this referring to current year data, or historical data as well?
Refers to most recent data collected. Recommended that past population estimates be referenced for comparison purposes.
PWS, Page 5, Section 3.1, Paragraph 2: What structure are we using? (non-lethal) All monitoring techniques are non-lethal.
PWS, Page 5, Section 3.1, Paragraph 3 - Remote Scanning: Are there any required specs on equipment to be used?
Only requirement is that submerged scanners are capable of reading 134.2 kHz PIT tags.
PWS, Page 5, Section 3.1, Paragraph 4 - Trammel Netting:
What are the net specs? Mesh size, mesh diameter, net length, net depth-monofilament, soak time?
Only nylon trammel nets of 150 or 300 feet in length and
1.5 inch inner mesh will be used. Net depth is dependant on where razorbacks are known to aggregate with no set standard. Net sets are allowed to fish overnight with typical soak time of 14-16 hours.
PWS, Page 5, Section 3.1, Paragraph 5 - Larval Collections: Larval Drift Nets? Light Trap?
Light traps are acceptable but preferred method uses 12 volt underwater halogen fishing lights connected to a battery placing the lights over the side of the boat in 6-12 inches of water. Larvae that swim into light are then dipnetted out of the water and into a holding bucket.
PWS, Page 5, Section 3.3: Do you have an estimate on the number of hours annually these meetings will require? 24-36 hours annually
File details come from the government source that posted it. Updated .