Attachment_6_Q&A.pdf

ProjNet ID Document Reference Contractor Question Government Response

7533452 01.11.00

CCTV requirements: Please provide limits for CCTV The

"stabilization" area is about 1200 feet long but the contractor will be traveling along the sewer from the pump station to the far end of the project (~2600 feet).

The CCTV will start from the Pump station to Manhole #9. The end of the project is located approximately 100 feet from Manhole #8. The purpose to ensure that the pipe is not damage during construction and that the heavy equipment does not damage the pipe between the Pump

Station and construction area.

7534564

10 OF 23 Stone

Reventment Typcial

Cross Section

Can dry Class A1 riprap be substituted for gabion stone. The stone is approximately 6" - 12" and weights 25-75 lbs.

Yes, dry Class A1 riprap may be substituted for gabion stone.

7539153 Section 14 - 1.7

Electronic Survey

Can you clarify the requirement of Section 14 paragraph 1.7 Electronic

Survey and positioning Systems? It reads all plant utilized for stone placement?? Are you requiring Equipment to have GPS beacons for tracking and recording??

It is only required for equipment being used to place the stone material.

The purpose of the Electronic Survey and positioning System is to ensure that the contractor is placing the stone in the designated areas, specifically for below water placement.

7540212 section 14 2.3

Geotextile Fabrics

Can you clarify whether the Geotextile Filter cloth under the gabion stone and below the Filter matress can be lapped at the seams or if it must be sewn?

The seams of the filtration geotextile shall be sewn when placed under the gabion stone. Filtration geotextile shall not be placed under the filter mattress. This is not a requirement for the design. The filtration geotextile shall be sewn in accordance with Specification Section 31 05

22 GEOTEXTILES USED AS FILTERS.

7545799 Drawing 20 of 23 Is the Triton BX Marine Filter Matress specifically required or can an equal be utilized?

See Change to Plans by Amendment. The Plans should state "Triton

Filter Mattress". The Triton Filter Mattress is also called Polymeric

Marine Filter Mattress. Yes. An equal to the Triton Filter Mattress

(Polymeric Marine Filter Mattress) can be used.

7548824 Environmental

Quality Resources

Contract duration is 240 days after NTP (Notice to Proceed) , what month is NTP expected to be issued?

Assuming normal business practice and pre-construction submittals issued timely, it is the government's intent is to issue Notice to Proceed or NTP as quickly as possible after contract award. With both requirements satisfied, the government anticipates NTP should be issued with 2 to 3 weeks of contract award.

7549071 Environmental

Quality Resources What is the Minority Business Enterprise participation goal percentage?

USACE doesn't have a Minority Business Enterprise Goal. Typically, you see that with State and Local Government Contracts. Minority

Businesses will probably fall under the Small Disadvantage Business

Goals if they fit the criteria for SDBs as stated in FAR, Part 2 and therefore there is no separate MBE goal

7549076 Environmental

Quality Resources Is geotechnical testing required to place gabion fill? No, geotechnical testing is not required when placing the gabion fill.

7549092 Site Visit - General -

Question

For the construction area, what is the existing sewer line depth below ground?

Per construction Plans, the existing sewer line depth varies below ground.

7549100 Site Visit - General -

Question

For the construction area, what is the existing sewer line composed of or material of construction?

The Director of Public Utilities for Amherst County Service Authority, verbally stated the existing sewer line material of construction is terracotta at the 28 June 2018 Site Visit.

7559951 31.25.00 the text label for Silt fence is shown, but not the symbol (which is a line with a pair of small "x's.") can you clarify the location of silt fence required in the revetment area? (The silt fence at pump station and storage areas are clearly shown.)

Silt fence is only required near the pump station and laydown/stockpile storage area. Near the revetment area a turbidity should be placed near the revetment as an erosion and sediment control measure and is shown by the symbol a line with the letters TC.

N/A General Question

Given that the maximum depth is only about 3 feet for the relocation area, if the mussel relocation work would need to be completed to the

USACE commercial diving standards

Your means and methods of relocation must be in compliance with EM

385-1-1. Safety and Health Requirements.

Question and Response for James River Streambank Amherst County W91236-18-B-0003