S110003A3.docx

Solicitation No. AG-95CV-S-11-0003, Amendment 03 Final set of Questions and Answers

1. DWG E0.1A, General Note 1, States “All exposed conduits shall be ¾” minimum EMT, unless noted otherwise” DWG E3.3A, Details 1, 2, 3, 5, 6, and 7 show the installation of Rigid Steel Conduits , Detail 4 shows Rigid Aluminum conduit installed for fixture C.

• Please verify whether or not Rigid Steel Conduit is to be installed for all exposed conduits, or Rigid Steel Conduit are to be installed for all exposed conduits except for the branch circuit wiring of fixture “C”, or if EMT is to be installed anywhere else.

• Please verify if Rigid Steel or Aluminum conduit is used that ¾” is the minimum size.

All exposed conduit shall be rigid steel. ¾" is the minimum size.

2. DWG E2.1A, Key Note 1+7, and DWG E2.3A, Keynotes 1+4 call out for weather proof outlets and switches.

• Please verify if all boxes, and devices inside the Greenhouse are required to be weather proof or just the ones denoted.

All boxes and devices in the Greenhouse shall be weatherproof.

3. DWG E3.1A, Section A, and enlarged plan, shows new conduits stubbing up into the existing switchboard and concrete pad.

• Please clarify if it is permissible to enter the switchboard from the side via LB conduits as is an existing conduit. Or, is it your intention to saw cut the existing concrete pad.

Verify availability of existing stub out from existing switchboard, LB is acceptable

4. DWG E2.1A shows the air circulation fans wired directly to circuit breakers.

• Is this correct or are the air circulation fans going to be controlled by the Micro Grow controller via a contactor panel?

Power for air circulation fans are plug in type. Fans shall be controlled by Micro Grow, or equivalent, separately.

5. DWG E2.1A shows the Exhaust fans wired directly to circuit breakers.

• Is this correct or are the exhaust fans going to be controlled by the Micro Grow controller via a contactor panel?

Power for air circulation fans are plug in type. Fans shall be controlled by Micro Grow, or equivalent, separately.

6. Section 13 34 13, 2.14 (page 4) Specifies a retractable curtain system.

• The electrical drawings do not appear to have the provisions for this reversing motor, or the reversing motor controller and limit switch wiring required.

Provide power to retractable curtain system per manufacturer’s instruction in each greenhouse. Retractable curtain system shall be controlled by MicroGrow, or equivalent.

7. DWG M2.3A shows an I/O DDC Module. The electrical plans do not show any provisions for this panel.

I/O DDC module is shown on the opposite wall with power receptacle shown on E2.2A.

8. Is the Mechanical contractor responsible for the control conduit and wiring between the EC and AC units and the I/O DDC Module and the sensor conduit and cable?

Scope of installing control conduit and wiring shall be determined by general contractor.

9. Would it be more feasible to have a contactor panel for equipment and lighting in each zone next to the MicroGrow controller?

One lighting contactor panel shall be provided as shown on wiring diagram on E4.2A

1. Roof Vents 2.06 A “Manually operated” does this mean using a power operator but you have to turn the switch to make it work or by using an old style pull chain, turning by hand, to make it work?

Manually operated without power, such as with a crank handle.

2. Doors 2.09 and 2.10. Referenced sections 081113 and 087100 spell out steel/HM doors but schedule on drawing A8.1A notes Aluminum doors/GHP (greenhouse panel). Door type on the drawing “A” looks like a solid door. Please clarify alum/HM and if glazed…

The steel/HM doors referred to the previous Headhouse phase. Door Type A indicates a door made with greenhouse panel material.

3. Shade 2.14 can you give a percentage of shade desired for this system? 60%

1. Is any special inspection require for masonry (grout sampling, prism test, & grout flow ability)?

Yes, see spec Section 04 20 00, para. 1.4, Note that prism testing is not required and that references to prism testing in this section may be disregarded.

2. Is there any seismic gape require between existing and new structures? See Detail 1/A9.2A.

3. Is Ext. Rebar (Threaded) w/Simpson CNW ½” on detail 5 on sheet S3.2A are 15” O.C? Yes; 15" is correct.

4. Specs (33 30 33 – Sec 1.4.2) calls for As-Built drawings shall be seal and sign by professional surveyor. Is license professional civil engineer can sign on As-Built plans? Yes

5. Do you accept electronic cost proposal (via email) on April 4, 2011 at 5:00 pm? We have not authorized email or faxed proposals.

1. Specifications section 26 20 00 / 3.1.4.4 indicates the use of plastic coated rigid steel risers. Detail 1 plan sheet E3.3A indicates the use of PVC conduit for receptacles through the floor for panels 'GH-2' and 'GH-3'. Detail 6 on plan sheet E3.3A indicates the use of PVC though the concrete also. This is in conflict with the specifications and typical conduit stub up detail 1 on plan sheet E3.1A. What are we to use?

Use PVC as indicated on details.

2. Plan sheet E0.1A General Notes #1 indicates that conduits shall be 3/4" minimum EMT unless otherwise noted. Plan sheet E3.3A details 2, 3, 7 and 5 indicate the use RGS conduit. Where will EMT allowed to be used?

EMT can be used in concealed wall or ceiling.

3. Plan sheet E3.3A detail 2 indicates the use of Chain, Eye Bolt and Spring Nut. What size of Chain, Eye Bolt and Spring Nuts are to be used?

Structural engineer to size bolt and nut to hold maximum 20 lbs of the light fixture

1. The generator is shown is where the PG&E transformer is located.

Space is available on the west side of the headhouse building for emergency generator and diesel fuel tank.

2. The design does not allow enough room for the transfer switch adjacent to the existing switchgear

Sufficient space is available on the left side, rather than the right side of power distribution box.

3. The Specified grow lights are no longer manufactured.

Price your proposal based on specified grow lights or equivalent looking at salient characteristics. Final review/acceptance will be at submittal phase.