A2_QA_CoffeeCrkWaterSys_Pre-bid_meeting.pdf

AG-9AC7-S-14-0090 Page 1 Amendment 1

Pre-Bid Meeting Coffee Creek Water System Replacement May 16, 2014

Questions and Answers:

Q1: What are the option items because there is a discrepancy between Section B -Schedule of Items and Section J-Summary of Work Special Project Specification Section 01 11 00?

A1: The Schedule of Item options are correct. Option work includes the installation of an OSHA approved exterior ladder on the 10,000-gallon water tank and the installation of a liquid level indicator on the

20,000-gallon tank; and installing cold asphalt mix in last year’s main compound utility trench excavations that crossed paved compound driveways and roadways. See updated Summary of Work

Special Project Specification Section 01 11 00.

Q2: What are Trinity County’s encroachment permit requirements for trenching and excavation across S.

Derrick Flat Road?

A2: For prices purposes only assume Trinity County will allow the following: Trenching or excavating across paved S. Derrick Flat Road with one lane maintained in each direction for public traffic with adequate provisions for the protection of all vehicles and pedestrian traffic; Excavation shall be backfilled with a non-shrink slurry backfill design mix of 2600 obs. 3/8-inch aggregate, 800 lbs.

mortar sand and 94 lbs., one sack, Portland cement concrete; Asphalt concrete (AC) should be either ½-inch or 3/4-inch, Type A, Maximum Medium and match existing depth of AC, but not less than 3 inches or exceed 5 inches; and minimum depth of cover shall be 36 inches below finished grade. Encroachment permit is required per special project specification section 01 32 00 part 3.05.

Q3: What is the expected condition of the asbestos cement pipe to be removed?

A3: All asbestos cement pipe is assumed to be a category II nonfriable asbestos containing material.

Q4: Is the Contractor responsible to remove all buried asbestos cement (AC) pipe and if the quantity is unknown how is the Contractor going to be reimbursed for this work?

A4: A pay item has been added to properly reimburse the Contractor for removed and properly stored

AC pipe onsite. Transport and disposal of asbestos cement pipe has been removed from this contract and therefore a licensed hazardous waste contractor is not required for this Contract.

When excavation exposes AC pipe the Contractor shall carefully remove it from ground and store it onsite for future disposal. Existing AC pipe underneath S. Derrick Flat shall be abandoned in place.

And where large trees have grown overtop of AC pipe or if the removal of AC pipe would significantly damage large tree roots than Contractor shall abandoned in place those sections of AC pipe. See updated Schedule of Items and Selective Facility Services Demolition Special project specification 02 41 19.

AG-9AC7-S-14-0090 Page 2 Amendment 1

Q5: Would the Contractor be allowed to widen road above the 20,000-gallon tank to get their construction equipment to the 10,000-gallon tank?

A5: Removal of slough material on road bed and minor cut bank excavation is allowed to widen road.

Q6: Is there an on-site disposal area?

A6: Excess excavated non-select material and rock may be placed on-site per the direction of the COR.

All removed vegetation/woody debris and non AC removed utility construction debris shall be removed and disposed of off-site per specifications.

Q7: Are there any water storage tank plan drawings?

A7: Yes, there are design drawing plans for the 20,000 and 10,000 gallon water storage tanks. See Tank-drawings-CoffeeCrkWaterSys.pdf