Atch_8_-_Q A.doc

Attachment 8 to

FA4664-15-R-0013

FA4664-15-R-0013 - REPAIR ATFP BLDG 470

Questions and Answers 28 July 2015 7 August 2015

1. Who does the contractor have to coordinate with to obtain construction water? We understand that the local water district has issued a document titled “Resolution 2910” which outlines the drought contingency plan that stops the use of domestic water for temporary construction use unless it is authorized by the Director of Engineering. Has the Owner obtained approval for the use of domestic water for temporary construction use? If not, what is the nearest reclaimed water site that can be used for construction water? There will be a significant cost impact to the project that will depend on distance to project, flow rate of available water, and quantity of contractors using the source if multiple construction projects are subject to the drought contingency plan.

ANSWER (REVISED): The Government will provide a construction water source on March ARB.

2. Specification section 03 30 00 section 1.6.6.1 lists the requirements for a Quality Manager. Is this Quality Manager the same as the CQCM (Contractor Quality Control Manager)? Is this person to be on site the entire contract duration?

ANSWER: Yes

3. Are a dedicated Safety Officer, Quality Control Manager, and Site Superintendent required for this project?

ANSWER: No, As long as qualifications are met, persons may have multi-functions.

4. Specification 03 30 00 Section 1.6.6.1 states that “Evidence of extraordinary proven experience may be considered by the Contracting Officer as sufficient to act as the Quality Manager”. Please define “Extraordinary Proven Experience”.

ANSWER: Multi-Projects served in this capacity (also see sections L & M of solicitation).

5. What is the thickness of existing concrete pavement?

ANSWER: We do not have as-builts that Identify depth of existing concrete. New Concrete is 7”. Anticipate existing does not exceed new.

6. What is the thickness of existing asphalt pavement?

ANSWER: Detail 7/C5.1 shows existing asphalt depth, however this cannot be confirmed. New asphalt is 3” O/6” AGG. Anticipate existing does not exceed new.

7. What are the dimensions of the existing concrete curb?

ANSWER: Existing curbs are standard 6” curbs.

8. Will temporary access need to be provided to stairs on the west side of the building?

ANSWER: No. Only one entrance will be required to be maintained throughout the project duration. East entrance, Graeber street side.

9. Detail 1 on Sheet C5.1 shows 7” of concrete paving on native. Detail 4 on sheet C5.1 references concrete pavement over aggregate base. Which is correct? Is there aggregate base under the paving?

ANSWER: Note #1/C2.2 states that 1/C5.1 is the detail to be followed for the new concrete. (7” O/Compacted Subgrade) Note #4/C2.2 identifies 4/C5.1 and shows the curb condition as the concrete adjoins it. This condition occurs at the Asphalt street, as well as the new concrete. On detail 1/C5.1 it states both Compacted Sub-grade, and Aggregate base. In the street follow detail 7/C5.1, it has aggregate base, other curb conditions follow 1/C5.1.

10. Detail 7 Sheet 5.2 references a rectangular pipe on detail 1 sheet 5.3. Detail 1 sheet 5.3 is a 24” wide concrete swale. Please advise.

ANSWER: Note #31 on C2.3 references both inlet and outlet of swale. Detail 7/C5.2 shows the flow at the outlet. See sheet C3.2 for the opposite flow at the inlet. Detail 1/C5.3 can be disregarded. (There is no concrete swale) The correct section of the swale is identified on sheet C2.3, and it references section 5/L4.1. Detail 7/C5.2 is correct in showing the rectangular pipe going through the curb in the direction of flow.

11. Will the government be providing specifications for the special inspections, contractor quality control, safety requirements, temporary construction facilities?

ANSWER:

a. Inspections for this project are to be an on- going, day to day, by an inspector assigned by Base Civil Engineering, Also a Base project Manager will do periodic inspections and attend all weekly meetings.

b. Special inspections, such as soil compaction, will be performed by an independent testing agency hired by the contractor, and performed in accordance with the plans and individual specifications for that scope of work.

c. Quality control shall be performed by the contractor, in accordance with each specification section that pertains to that scope of work. (Also See Section 01 45 00.10 10 Quality Control System QCS)

d. Safety Requirements are regulate by Cal-OSHA construction requirements. Contractor shall meet all safety standards.

e. Temporary construction Facilities-Contractor is to provide Temporary restroom facilities. (NO USE OF EXISTING BUILDING FACILITIES WILL BE PERMITTED.) Contractor Trailer is not a requirement, however is at the contractor’s option inside project limits. (For storage, or other use)

12. General Contractor noticed that the Contract Drawings do not indicate lay down area. Please provide lay down area location.

ANSWER: Lay down area is within project boundary, on Graeber street side. Any offsite laydown, or other off-site contractor activity, or traffic disturbance, will require a plan submittal, and description of proposed activity for approval.

13. General Contractor has received the questions and answers for the subject project. The answer to question # 9 contradicts what Detail 1/C5.1 depicts because it clearly shows no aggregate base under the concrete paving. Could you please confirm whether or not the concrete paving will be receiving aggregate base course? If so, what depth is required and type? Please clarify.

ANSWER: The detail 1/C51 is correct. Follow Note #1/C5.1 for sub-grade requirements. (No Aggregate Base required.) Aggregate Base is only required per the Patchback Paving Detail 7/C5.1.

14. Civil Sheet C2.2 - Partial Site Plan - Area 1 - Note # 2 instructs us to pour new concrete sidewalk and directs us to detail 8 on C5.1. Detail 8 does not show any reinforcing. Please review and provide reinforcement requirements.

ANSWER: At all sidewalk locations, use #3 @ 18” O.C. Each Way.

15. Landscape Sheet L3.1 - Planting Plan - Instructs us to rake and relevel the existing turf areas. The Landscape Plan does not show existing turf locations. Could you please clearly show which are existing turf areas and which are the new turf areas?

ANSWER: See attached Drawing

16. Please confirm whether or not the sidewalk will receive any base.

ANSWER: No Aggregate Base (See answer #2) Change Note on detail 8/C5.1, sub-grade compaction requirement from 7/C4.1 to 7/C5.1. This was a typo Error.

17. Please confirm the existing turf areas do not have an existing underground irrigation system. If the underground irrigation system exists. Are we to remove it? Please clarify.

ANSWER: Existing turf areas have existing irrigation. Block note on L1.1 States: “Contractor shall remove all existing-above ground irrigation equiment and componants not to be a part of the newly designed irrigation system”. The intent of this statement is to remove all componants of the existing irrigation system, both above and below ground.

18. Landscape Plan – L3.1 Planting Plan instructs us to install a stone bed and direct us to detail 4 on L4.1. Detail 4 on L4.1 does not should depth and size of stone. Please clarify.

ANSWER: Detail 4/L4.1 shows (2) types of stone. First is drainage stone. (Note #5) shows a depth between 2’-6” Minimum & 5’-6 maximum. Depth varies due to slope of drainage pipes around building. Per the note, the rock is mixed and between ½” Minimum and 2” Maximum in size. This rock can be natural aggregate in color. Second Rock is a top layer of decorative layer. (Note #7) This rock is also between ½” minimum & 2” maximum in size. It must be California Gold in color and at a depth to cover the drainage rock color. 2-4”Minimum.

19. At the Pre-conference held on July 21, 2015, Contractors were not allow to check the existing condition of the Plexiglass windows at the old tower. Could you please provide pictures of the existing Plexiglas window?

ANSWER: Pictures attached.

20. Landscape Plan – L3.1 – Planing Plan instructs us to construct a river rock drainage swale and directs us to detail 5 on L4.1. Detail 5 on L4.1 note #1 instructs us to provide “Claifornia gold” with rock ranging from 6” – 12”. Landscape Suppliers stated that this rock size is not available in California Gold. Please verify or provide an alternate rock type.

ANSWER: River Rock is a natural product, therefore Different suppliers supply rock from varies areas. The swale rock is designed for use of river rock between 6-12”. Selection will be determined from a full range of colors available submitted by the contractor, and the stone as close to California Gold as possible will be selected. Some of the largest 2” rock from the “Decorative Rock” installation could be used to blend for color match.

21. The specification section 33 32 00 section 2.8.2 and plan sheet C5.6 section 2.7 describe different pump station control units. Please clarify the discrepancy as a there will be a significant cost impact to the pumping station depending on which set of standards the contractor is supposed to follow.

ANSWER: The drawings for the lift station are more detailed and they take precedence over specification section 33 32 00 where any conflict in requirements occur.

Attachments:

1. Question #15 1-Drawing

2. Question #19 2- Pictures

(Amend 0003, 7 August 2015)