April 28, 2020 Addendum #4 Brooks Road Pump Station Improvements BL038-20 1. Instructions to Bidders Delete Article 9 in its entirety. 2. Supplementary Conditions Delete Paragraph SC-4.06 in its entirety and insert the following: SC-4.06 Delete Paragraphs 4.06.A, 4.06.B, and 4.06.F in their entirety and insert the following: A. No reports or drawings related to Hazardous Environmental Conditions at the Site are known to the Owner. B. Not Used. F. If after receipt of such written notice Contractor does not agree to resume such Work based on a reasonable belief it is unsafe, or does not agree to resume such Work under such special conditions, then Owner may issue a Work Change Directive or Change Order as appropriate. The Work Change Directive or Change Order will, with the Contractor’s concurrence for determining that it is safe to return to work, or determining conditions under which work may resume, provide direction for either deleting the portion of the Work that is in the area affected by the condition, or taking other action as directed by the Owner and Engineer. Contractor may be entitled to an adjustment in Contract Price or Contract Times for impacts to the Work in the affected area, if any, if Work is resumed after the site has been cleared. Owner will be entitled to a adjustment in Contract Price or Contract Times if Work is deleted. If Owner and Contractor cannot agree as to entitlement to or on the amount or extent, if any, of an adjustment in Contract Price or Contract Times as a result of deleting such portion of the Work, then either party may make a Claim therefor as provided in Paragraph 10.05. Owner may have such deleted portion of the Work performed by Owner’s own forces or others in accordance with Article 7. 3. Questions Q1. Regarding Note 2 on drawing C-104, is there anything specific that needs to be coordinated? A1. There is no specific coordination item. The laydown area is limited, and the Contractor needs to coordinate with GCDWR to make sure the final area does not interfere with normal operations. Q2. Is there any clearing & grubbing required for the construction staging and laydown area? A2. There is minimal clearing and grubbing required.
69
Embed
Brooks Road Pump Station Improvements BL038-20 ADD4.pdf · Brooks Road Pump Station Improvements BL038-20 1. Instructions to Bidders ... resume, provide direction for either deleting
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
April 28, 2020
Addendum #4
Brooks Road Pump Station Improvements
BL038-20
1. Instructions to Bidders
Delete Article 9 in its entirety.
2. Supplementary Conditions
Delete Paragraph SC-4.06 in its entirety and insert the following:
SC-4.06 Delete Paragraphs 4.06.A, 4.06.B, and 4.06.F in their entirety and insert the following:
A. No reports or drawings related to Hazardous Environmental Conditions at the Site are known to the Owner.
B. Not Used. F. If after receipt of such written notice Contractor does not agree to resume such Work based
on a reasonable belief it is unsafe, or does not agree to resume such Work under such special conditions, then Owner may issue a Work Change Directive or Change Order as appropriate. The Work Change Directive or Change Order will, with the Contractor’s concurrence for determining that it is safe to return to work, or determining conditions under which work may resume, provide direction for either deleting the portion of the Work that is in the area affected by the condition, or taking other action as directed by the Owner and Engineer. Contractor may be entitled to an adjustment in Contract Price or Contract Times for impacts to the Work in the affected area, if any, if Work is resumed after the site has been cleared. Owner will be entitled to a adjustment in Contract Price or Contract Times if Work is deleted. If Owner and Contractor cannot agree as to entitlement to or on the amount or extent, if any, of an adjustment in Contract Price or Contract Times as a result of deleting such portion of the Work, then either party may make a Claim therefor as provided in Paragraph 10.05. Owner may have such deleted portion of the Work performed by Owner’s own forces or others in accordance with Article 7.
3. Questions
Q1. Regarding Note 2 on drawing C-104, is there anything specific that needs to be coordinated? A1. There is no specific coordination item. The laydown area is limited, and the Contractor needs to
coordinate with GCDWR to make sure the final area does not interfere with normal operations. Q2. Is there any clearing & grubbing required for the construction staging and laydown area? A2. There is minimal clearing and grubbing required.
BL038-20 PAGE 2
Addendum #4
Q3. Section 01 52 13 does not mention a field office for the engineer. Is the contractor required to furnish a
field office for the engineer? A3. There will be no field office required for the engineer. However, engineer may use contractor’s field
office occasionally. Q4. Can you confirm that the peak flow and head conditions listed in Section 33 01 30.74 Part 2.1 A. 1 are
correct? A4. The Peak Flow and Head Conditions listed are correct. Q5. To make this head and flow you will have to have a feeder pump going into a booster pump as a system
and you will have two systems each capable of 2500gpm (4 pumps) to make the 5000gpm. If it were decided to use an electric pump system as primary and a diesel system as lag to make the 5000gpm will it be necessary to have 2 complete diesel systems (2 feeders and 2 boosters)as backup to make the 100% redundant or will one diesel backup system be good enough (one electric and 2 diesel systems total)?
A5. The contractor will need a completely redundant diesel system. If electric pumps are used, the contractor shall establish how to supply power to the pumps. This shall be the contractor’s responsibility. The design condition for bypass pumping will need primary and backup system capable of meeting this condition.
Q6. To further question Q5, if we ran two electric systems would it require 2 diesel systems as backup to
meet the 100% redundancy? A6. Yes. The backup system will require 2 diesel systems. Q7. The main bypassing manhole will be the manhole outside the fence. This manhole is an offset doghouse
that the pipe is just cracked enough to allow water to flow into the main 48” line. It would be best to have this crack opened up so you can get a suction line into the 48” pipe to be able to keep the pipe from being full and give us some storage. Will it be ok to alter this manhole?
A7. The manhole has already been modified as described. If required, the contractor may submit additional proposed manhole modifications for GCDWR’s review and acceptance during construction.
Q8. It was stated to have the necessary hoisting equipment for each pump onsite during the bypass. The
pumps weigh 24,000lbs and will take a crane to move them will we need to supply a crane to be onsite 24/7 during the bypass because there is no room. Will a lift that can remove suction tubes in case of a clog and can lift pipe for replacement if needed suffice?
A8. A lift capable of moving pipes and servicing pumps as needed during bypass would be acceptable. Q9. Section 32 31 13 Part 2.1 A., says “Match style, finish and color of each fence component with that of
other fence components.” Does that mean that the proposed fence needs to match the existing fence or are we to provide the fence specified?
A9. Add Note 7. to C-502 “CONTRACTOR SHALL MATCH EXISTING FENCE HEIGHT OF 8’ FOR ALL INSTALLED FENCING ON SITE.”
Q10. A note and leader on E-103 says, “Saw cut and remove concrete portion of flume. Provide concrete and
match flume contours.” Is there any as-built information available on the flume? A10. Contractor shall return the flume to the pre-existing condition. Q11. Drawing C-104 defines an area on site to be used for bypass pumping. Is there any information available
on temporary suction and discharge points for the bypass pumping operation? A11. Sheet C-101 provides information for the sanitary sewer manholes and the existing 12” DIP bypass line
that are located within the defined by-pass pumping area. Q12. Can you get clarification on how these doors are to be hinged? The drawings appear to show the 5 X 5's
as single leaf and all others as triple leaf doors and the spec is calling out single and double leaf. Also there is no mention of lift assist in the spec but these size doors will require SS gas shocks for lift assist
BL038-20 PAGE 3
Addendum #4
A12. Provide stainless steel Pneumatic Lift Assist for Aluminum Access Hatches. Q13. On sheet S-103, Note #4 indicates a Thern Davit crane, the supplier is asking about the material of
construction, is the unit 316 stainless steel or powder coat finished? (updated model #’s are 5PT10-M1 for powder coat or 5PT10-M3 for 316SS)
A13. Revise Note #4 on sheet S-103 to the following: “4. Provide Thern Commander 1000 Davit Crane with side mount model 5BW10 or engineer approved equal at each service platform. Crane shall be rated for 500 lbs. Provide SST 316 fasteners and base and a powder coat finish for crane.”
Q14. On sheet S-101 for the hatches, Note #2 says to sawcut to remove the hatches, however detail F shown
on Sheet S-301 indicates that we are not to remove rebar in these areas. It appears this detail requires us to “jack-hammer” out the concrete to save the existing rebar, is this the intent versus sawcutting the whole depth around the existing hatches?
A14. Only the reinforcement to be removed is the reinforcing bars in conflict with the new hatch. Q15. The Bypass Pumping specification, section 3.1K, indicates that hoisting equipment for each pump be on-
site during bypassing. We expect these pumps to be heavy, which would require a crane to lift. The bypassing plan requires us to have back-up pumps installed for all pumps which would give us time to mobilize a crane to service the pumps. Will this be acceptable, or are you requiring us to have a crane on site at all time?
A15. See A8. Q16. The current project completion time is only 270/300 calendar days. The specified pump vendor, Flygt,
provided the following list of manufacturing and delivery times of the pumps. If we add at least 8 weeks of submittal and approval time. The pumps don’t arrive until week 31 of a 38 week project. The pump installation, electrical work and start-up/testing/commissioning of the pump station will take at least 3-4 months after this. This project is at a minimum a 12 month duration, if not 14 months. Please consider adding completion time to the project.
• 8-10 weeks to manufacture • 1-2 weeks testing and approval. • 2 weeks for Anti Spark Face on submersible pumps. • 5 weeks Ocean • 4 weeks delay in shipping so far due to Pandemic (worst case so far) • 21-23 weeks to site (worst case) from approved drawings or sooner at this time
A16. Due to current conditions, the contract time is changed from 270 days to 390 days for Substantial completion and 300 days to 420 days for Final completion.
Q17. Are the design points intended to be the test points? A17. Yes, at a minimum the test shall include the specified design points. Q18. The current pumps run on the pump curve at the flows listed in the specification which allows for a
negative tolerance. The specification does not:
If you use the current design flows under this specification then the pumps would have to be able to pump up to 10% more and still meet the non-overloading requirement. The current pumps which are the
BL038-20 PAGE 4
Addendum #4
basis of design would not meet this spec. I propose adding a test spec based on the design points to include HI 1U Guarantee Points of:
Individual HI IU no negative tolerance Guarantee test points: 1. Test to HI 1U Q&H 4484@180, Non Overloading at 385HP to Runout. 2. Test to HI 1U Q&H 6502@154, Non Overloading at 385HP to Runout. 3. Test to HI 1U Q&H 7890@135, Non Overloading at 385HP to Runout.
I also propose adding the series design point since the pumps will have to be designed to withstand the pressure of two of them in series. They may want them to be interchangeable as well. The existing pumps have 250lb flanges for example. For example: If you use the test points you would double the head (but the pumps won’t be tested in series so you could use the design points For the current pumps I would use:
This is based on the pumps that are installed now and I attached a curve. The second curve has duty points that double the head of the HI 1U test points. Using these duty points will allow both the new and existing pumps to meet the specification.
A18. See revised specification Section 43 21 39. Q19. Article 9 of the Instructions to Bidders states “The Engineer does not make any representations as to the
soil conditions to be encountered or as to foundation materials. The Contractor must assume all risk as to the nature and behavior of the soil which may be encountered or of soil or water which underlies the Work or is adjacent thereto, including any difficulties that may be due to quicksand or other unfavorable conditions that may be encountered in the Work, whether apparent upon surface inspection or disclosed only in the process of carrying forward the Work”. Are you denying the Contractor the right to a Different Site Condition under GC 4.03? What is the intent of this Article? General Conditions 4.06.F. implies the Owner may unilaterally direct the Contractor to resume work in an area the Contractor considers unsafe due to the discovery of undisclosed Hazardous Environmental Conditions. Is this the Owner’s intent?
A19. Article 9 of the Instructions to Bidders has been deleted, see #1 above. Indicating a Work Change Directive or Change Order as a vehicle to amend the contract is not intended to imply that the Owner would direct the Contractor to proceed with work in an unsafe manner. The paragraph has been revised to clarify this intent, see #2 above.
Q20. On the bid form Part 1 Item 1.9 it calls for wet well coating. On page 16 of the drawings attachment on
the coatings schedule it calls for wet well 301,302,303, distribution chamber DC 200 and inlet chamber IC 200 to be coated. Can you clear this up please as to what exactly needs to be coated?
A20. Item 2.17 on the bid form has been updated with language and designations found on the plans for clarity. The bid form has been revised as part of this addendum.
Q21. Plan sheet G-001, General note 19 states all disturbed areas shall be sodded unless noted otherwise in
the contract documents. Specification section 32 92 00 provides information for both seeding and sodding. Please clarify whether seeding or sod is required.
A21. Add Note 3 to C-104 “3. CONTRACTOR SHALL RESTORE ALL DISTURBED AREAS TO MATCH THE PRE-EXISTING CONDITIONS OF THE SITE.”
Q22. Are any of the existing pumps, valves, gear, etc. to be salvaged and turned over to the Owner? A22. The Contractor shall salvage and turn the two wet well pumps and their cables. They should be
delivered to DWR Central. The GCDWR staff will unload this equipment. The pumps and the pump cables should not be damaged during transport.
Q23. Section 01 45 23.13 Part 3.3. lists test procedures for concrete structures. Please confirm that the
Contractor does not need to leak test the existing inlet chamber, distribution chamber and wet wells.
BL038-20 PAGE 5
Addendum #4
A23. The contractor does not have to leak test the existing inlet chamber, distribution chamber, and wet
wells. Q24. Section 01 50 00 Part 1.9 list requirements for temporary heating until permanent heating equipment has
been installed. No heating equipment is being installed under this contract. Please confirm whether temporary heating is necessary.
A24. Temporary heating is not required for this project. Q25. Section 01 00 00 Part 3.4 A indicates that the Owner will pay for all water required to execute the work.
Section 01 50 00 Part 1.3 E indicates that the Contractor shall pay for construction water. Please clarify. A25. Remove the existing section 01 50 00 Part 1.3E and replace with the following: “the Owner will not
charge the contractor for all water used to execute the work. However, hydrant meter issued by the County must be used to track the usage volume.
Q26. Can you provide an email address for Mike Clark (Georgia Power)? A26. Revise Note 10 on sheet E-101 to the following: “CONTACT: MIKE CLARK 770-995-4789” Q27. Are there any specific requirements for the Contractor Quality Control Officer listed in 01 45 00 Part 1.4? A27. The only requirement is that the CQC Officer shall have a minimum 15 years of experience in Industrial
Pump Station construction. Q28. Drawing E-101: Specific Note # 5 references a detail # 7 on sheet E-504. The drawing I have only as 6
details. A28. Specific Note #5 shown on Drawing E-101 shall be modified to reference Detail 3 on Sheet E-502. Q29. Drawing E-101: Specific Note # 10 states that the contractor is to pick up the 2 new concrete pads at
Georgia Power’s facility. Will Georgia Power load these pads on the contractor’s truck when they pick them up or does the contractor need to have a way to load them?
A29. Georgia Power to load Pads. The Contractor shall coordinate with Georgia Power for pick-up. Q30. The phone number for Mike Clark on that same drawing and note is incorrect. A30. See A26. Q31. Please clarify scope of arc detection system for SWGR 1&2. Does the entire SWGR 1&2 need to include
light sensors to detect an arc flash event or just the main breaker structure? A31. Contractor shall provide on main and branch breakers. Q32. For FS1 & FS2 is the motorized function for opening and closing the switch or just opening/tripping the
switch? A32. The motorized operation is for opening and closing. Q33. Can FS1 and FS2 be specified as an electrically-operator breaker instead if remote opening and closing
are required? A33. Provide Short Circuit/Arc Flash Study to indicate what can be used with an incident level to be 40
(cal/cm2) or less. Q34. For MB1 through MB4, will a digital power meter be an acceptable substitute for the analog meters
specified on drawings? A34. Digital power meter is acceptable. Q35. Regarding the coatings, I don't see any measurements of the wet wells, inlet chamber or distribution
chamber either. I can somewhat make out the depths but I don't see anything on the lengths and widths. A35. The contractor is responsible to perform quantity takeoffs for coatings of these areas.
BL038-20 PAGE 6
Addendum #4
Q36. Was the electrical re-feed of Brooks Rd a past project out for bid that might have been cancelled and/or
delayed? A36 The electrical re-feed of the pump station was not a previous project for GCDWR. Q37. According to one of the three named generator vendors, the combined lead time for submittals and
delivery (after approval) is currently in the 34-36 week range. The specifications say to allow 30 days for the engineer to approve submittals. We have not heard from the other two generator vendors yet, but at this point, delivery of the generator appears to exceed the 270 day duration for substantial completion. Will you consider extending both substantial and final completion by an appropriate amount?
A37. See A16. Q38. Please advise if the 12-Sequencing Constraints listed in Paragraph 1.6 of Spec Section 01 14 00 are in
chronological order as they should occur during construction. A38. The sequencing constraints listed are not necessarily in chronological order. Q39. Paragraph 1.6.A.4 states the Contractor shall “provide and install 15kv conduit and manhole as indicated
on the drawings.” Please advise where the manhole is located. A39. These are shown in sheet E-101 East and West of new generator. Q40. Drawing E-101 indicates Georgia Power will furnish and install:
a. Conduit and underground 15KV conductors shown as P-103, P-104 & P-105 b. 2 each 15 KV Splice Boxes c. HDPE 15KV conduit near the force main at the end of new generator “G2” d. 2 each pre-cast concrete transformer pads for “T1” & T2” (picked up and set by contractor) e. Transformers “T1” & “T3”
Please confirm the only 15kv conduit and conductors that are furnished and installed by the Contractor is “P-102”. This item cannot be completed until the pump station is being by-passed.
A40. P-102 is correct.
Q41. Is temporary by-pass pumping required for the Brooks Road PS while Georgia Power installs new power service for the Booster Pump Station? Georgia Power’s scope of work is shown on Drawing E-101.
A41. Yes, Bypass pumping of the Brooks Road PS is required as specified in section 33 01 30.74. See also the response to Q42 regarding the operation of the Booster Station.
Q42. Will the Booster Station be taken out of service while Georgia Power performs their work or will the
Owner operate the Booster Station utilizing an existing Generator? A42. The Booster Station will remain in service and the County will operate the Booster Station utilizing the
existing generator on site. Q43. Can the Contractor utilize Transformers T1 and T3 to provide power to temporary by-pass pumps while
the Brooks Road Pump Station is being by-passed? A43. No, the bypass requirements are specified in section 33 01 30.74. Q44. Will the Booster Pump Station be utilized while the Brooks Road Pump Station is being by-passed? A44. The Booster Pump Station will be online during the by-pass pumping of the Brooks Road Pump Station. Q45. Will the Owner require all equipment (Pumps, Valves, Electrical Switchgear, etc.) to be onsite prior to by-
passing the Brooks Road Pump Station? A45. Yes, due to uncertainty of lead times for major equipment, the major equipment will need to be onsite. Q46. Can the contract time for substantial completion be extended to 18-months? It is our understanding the
pumps currently have a lead time of 25-29 weeks after approval (plus 6-weeks for submittal preparation and 2-weeks for Engineer/Owner Review).
A46. See A16.
BL038-20 PAGE 7
Addendum #4
Q47. Will Tetra Tech be the Construction Manager for this project or will the Owner utilize a 3rd party for these
services? A47. Tetra Tech will be the Construction Manager for this project. Q48. Please confirm the Contractor may use the existing Overhead Bridge Crane to transport material during
construction. A48. Yes the Contractor will be allowed to use this equipment. GCDWR will have crane inspected before
contractor starts work and require inspection after they are complete. The contractor will be responsible ensure the crane is returned to the same or better condition we project is complete.
Q49. Will the Owner want to salvage any existing pumps or electrical equipment? If so, please advise where
the material should be delivered and if the Owner will off-load the material. A49. See A22. Q50. Specification Section 01 14 00 requires substantial completion within 270 calendar days. We have been
advised that the pumps and starters will take approximately 29 weeks for delivery after approval. Assuming submittal preparation and approval takes 12 weeks this puts the delivery of the equipment at 10-11 months. We are requesting the construction schedule be extended to 450 days to allow for procurement and delivery of the equipment.
A50. See A16. Q51. Based on the information we are receiving from our pump supplier (see conversation below) we request
the contract time to complete this project 270/300 days to 420/460 days. A51. See A16. Q52. Bid Item 2.1 is a unit price item for bypass pumping. This item has a substantial cost for mobilization
that will only be paid with the first week’s rent. There is no bid item for the mobilization so those costs must be included in bid item 2.1. Do you want to add a bid item for mobilization of the bypass system in case it is used for multiple consecutive weeks?
A52. A bid item is not going to be added. The contractor can provide an item in the proposed schedule of values to be reviewed by the County.
Q53. There are two (2) JWC Environmental Channel Monsters (Model CDD-5020 and each rated at 28.9 MGD)
in operation at the Brooks Road P.S. Please confirm that an identical grinder is to be supplied under Section 46 24 33, Open-Channel Grinder. Also, please change the specified flow per grinder to 28.9 MGD in subsection 2.1.B.1 of the Open-Channel Grinder specification.
A53. Item 2.1.B.1. in Specification Section 46 24 33 has been revised to match the 28.9 MGD flow rate. Q54. In reviewing the major equipment fabrication and delivery, this project will have a large amount of lost
time, prior to having any actual work start on site. Under normal economic condition we are looking at least 6 to 7-months fabrication time on the pumps and gear after approved shop drawing. If you add in the review time for the submittal, you would be at 8 to 9-months which is all we have for duration under the present contract. Under normal condition this project would need another 6 or 7-months duration to complete work once the equipment was on site. Approximately another 210 calendar days need on Substantial Completion. Please provide the appropriate time into the contract.
A54. See A16. Q55. Under Spec Section 01 14 00 1.6 A 4 – states the contractor to provide and install all 15kv conduit and
manhole as indicated on the drawings. Please indicate where this manhole and conduit are located on the drawing.
A55. See A39. Q56. It appears the drawing E-101 that the only 15kv conduit & conductors that are F&I by the Electrical
Subcontractor is P-102. If this is correct, then you cannot complete this work until after the pump station is being temporary by-pass pumped. Please confirm or clarify.
BL038-20 PAGE 8
Addendum #4
A56. See A40. Q57. For Flygt pumps, from release to production to delivery on job site is 25 – 29 weeks. Square D products
are similar – 24 weeks approximately. On top of this you should consider 6 weeks for submittals, the pump submittal can be done right away but the Reduced Voltage Soft Start Cabinets will take longer. In addition to those numbers you should consider delays for review. So for submittals and delivery 31-35 weeks not including review time. Basically production time has doubled in the last 2 months, if things improve the delivery is likely to go down. This is based on what we think conditions might be in the first week of June (Receiving a PO). Please consider an extension to the contract time.
A57. See A16. Q58. In the switchgear specification section 26 23 00 and others, the section details General Electric as an
approved manufacturer. The division of GE (GE Industrial Solutions) that manufactures electrical distribution equipment was sold to ABB in 2018. ABB still manufactures equipment as GE branded, could we please have confirmation that GE branded products by ABB will be acceptable on the project?
A58. ABB is acceptable. Regardless of equipment manufacturer selected by contractor for basis of proposal, all gear, panels, starters, contactors, drives, etc., shall be supported by the manufacturer for a period of not less than 18 years after installation. This shall include availability of replacement parts, software, firmware, breakers, rebuild kits, etc.
Q59. The painting schedule on D-103 shows estimated quantities in SF of items to be painted. Since there are
no unit prices for painting, how will over-runs in quantity be handled? A59. Owner Directed Unit Prices for the specified painting/coating applications have been added to the
Measurement and Payment specification (Section 01 22 15) and the Bid Form. See attached revised Bid Form.
Q60. Regarding the painting schedule on D-103, in which bid item should ID 3, 7, 8 and 9 be carried? A60. Contractor to carry these costs in bid item #6 Installing New Pumps. Q61. The drawings do not show any exposed outdoor piping, so can the contractor assume that all of the
existing exposed piping to be painted (2,600 SF) is inside the pump station? A61. Exposed piping also includes DIP vents, transducer stubs, or DIP blind flanges above the wet well. Q62. My question has to do with the conduit specification section 26 05 33.In Para. 2.1 (Products) they list
Aluminum Rigid Conduit (ARC) and PVC Coated Aluminum conduit as types used. In Para. 3.1 (Execution) they only list (A)- Outdoor Locations for conduit types to use. There doesn’t seem to be a listing for the type of conduit you would use for exposed indoor areas. IE: The electrical room. It seems very expensive to use PVC Coated Aluminum for the electrical room. Perhaps it is there but I can’t find it.
A62. Electrical room is to be threaded aluminum conduit. Q63. Paragraph 2.2-A.2 of Spec Section 33 34 16 states that 3-New Plug Valves shall be installed on the
discharge side of Pumps 302B, 303B, and 305B. Drawing D-104 shows 1-New Plug Valve on the discharge side of Pump 303B and it also shows the Plug Valves on the discharge side of Pumps P301B and P302B are existing and will remain. Please ask the Engineer to clarify the number of New Plug Valves required on the discharge side Pumps 301B, 302B, and 303B.
A63. There is 1 new 24” plug valve on the discharge side of pump P303B and 2 new chainwheel operators for the existing 24” plug valves on the discharge side of pumps 301B and 302B. See revised specification Section 33 34 16.
Q64. Please clarify Valve Size and Tag Numbers referenced in Paragraph 2.2-A.2 of Specification Section 33 34
16. Is Pump 305B applicable for this project? A64. See revised specification Section 33 34 16. Q65. Please clarify which Plug Valve(s) are required to have Class 250 Extra Heavy Flanges as noted in
Paragraph 2.2-A.2.c of Spec Section 33 34 16.
BL038-20 PAGE 9
Addendum #4
A65. The proposed plug valve EPV-303B is required to have Class 250 Extra Heavy Flanges. Q66. Please advise if all Flanges on the Discharge Side of Pumps 301B, 302B, and 303B are to be Class 250
Extra Heavy Flanges (including pipe, fittings, and check valves) A66. All Flanges on the Discharge Side of Pumps 301B, 302B, and 303B are to be Class 250 Extra Heavy
Flanges (including pipe, fittings, and check valves). Attachments:
Section 01 22 15
Section 33 34 16
Section 43 21 39
Section 46 24 33
Revised Bid Form
Sincerely,
Dana Garland Dana Garland, CPPB
Purchasing Associate III
Please read the following regarding the bid due date on May 5, 2020 at 2:50 PM:
The County’s mail room has reduced their hours in response to COVID-19. Any mail received after 12:00 P.M. may not be processed until the following business day.
Any bidders mailing in their bids must ensure that it arrives prior to 12:00 P.M. on May 4, 2020, or it may not be delivered to Purchasing’s Office in time for the 2:50 P.M., May 5, 2020 deadline and will not be accepted. It is the responsibility of the bidder to ensure bids are delivered on time. It is recommended that all bids be mailed in rather than be hand delivered.
The Department of Financial Services lobby/front desk area is currently closed. At this time on bid opening days, the door will be open for a brief time prior to the 2:50 P.M. deadline to allow hand-delivered bids. Deputies will measure the temperature of each person who enters the building using a no-touch infrared thermometer. If the temperature measures 100.4 degrees Fahrenheit or above, the person will not be permitted to enter the building. Any bidders that choose to hand deliver bids and wish to attend the opening will be required to stand six (6) feet away from other attendees to remain in compliance with CDC recommendations. The number of people permitted to be in the room will be limited to space available and shall not exceed ten (10) people.
As always, responses will be posted that afternoon or the following business day on the County’s website, www.gwinnettcounty.com.
Gwinnett County Department of Water Resources Measurement and Payment
Brooks Road Pump Station Improvements 01 22 15-1
SECTION 01 22 15
MEASUREMENT AND PAYMENT
PART 1 GENERAL
SUMMARY
A. Section Includes
Paragraph Title
1.2 Descriptions
1.3 Nonpayment for Rejected or Unused Products
1.4 Partial Payment for Stored Materials and Equipment
1.5 Bid Items
B. Scope
The Bid lists each item of the Project for which payment will be made. No payment
will be made for any items other than those listed in the Bid.
Required items of work and incidentals necessary for the satisfactory completion of the
work which are not specifically listed in the Bid, and which are not specified in this
Section to be measured or to be included in one of the items listed in the Bid, shall be
considered as incidental to the work. All costs thereof, including Contractor's overhead
costs and profit, shall be considered as included in the lump sum or unit prices bid for
the various Bid items. The Contractor shall prepare the Bid accordingly.
Work includes furnishing all plant, labor, equipment, tools and materials, which are not
furnished by the Owner and performing all operations required to complete the Work
satisfactorily, in place, as specified and as indicated on the Drawings.
DESCRIPTIONS
A. Measurement of an item of work will be by the unit indicated in the Bid.
B. Final payment quantities shall be determined from the record drawings. The record
drawing lengths, dimensions, quantities, etc. shall be determined by a survey after the
completion of all required work. Said survey shall conform to Section 01 71 23.16. The
precision of final payment quantities shall match the precision shown for that item in the
Bid.
C. Payment will include all necessary and incidental related work not specified to be
included in any other item of work listed in the Bid.
D. Unless otherwise stated in individual sections of the Specifications or in the Bid, no
separate payment will be made for any item of work, materials, parts, equipment,
supplies or related items required to perform and complete the work. The costs for all
such items required shall be included in the price bid for item of which it is a part.
E. Payment will be made by extending unit prices multiplied by quantities provided and
then summing the extended prices to reflect actual work. Such price and payment shall
constitute full compensation to the Contractor for furnishing all plant, labor, equipment,
tools and materials not furnished by the Owner and for performing all operations required
to provide to the Owner the entire Project, complete in place, as specified and as
indicated on the Drawings.
Measurement and Payment Gwinnett County Department of Water Resources
Brooks Road Pump Station Improvements 01 22 15-2
NONPAYMENT FOR REJECTED OR UNUSED PRODUCTS
A. Payment will not be made for the following:
Loading, hauling, and disposing of rejected material.
Quantities of material wasted or disposed of in manner not called for under Contract
Documents.
Rejected loads of material, including material rejected after it has been placed by
reason of failure of Contractor to conform to provisions of Contract Documents.
Material not unloaded from transporting vehicle.
Material and equipment not properly stored.
Defective Work not accepted by Owner.
Material remaining on hand after completion of Work.
PARTIAL PAYMENT OF STORED MATERIALS AND EQUIPMENT
A. Partial Payment: No partial payments will be made for materials and equipment
delivered or stored unless Shop Drawings or preliminary operation and maintenance
manuals are acceptable to Engineer.
B. Final Payment: Will be made only for products incorporated in Work; remaining
products, for which partial payments have been made, shall revert to Contractor unless
otherwise agreed, and partial payments made for those items will be deducted from final
payment.
BID ITEMS
A. Bid Prices included on the Bid Form shall be full compensation for all materials, labor,
equipment, tools, construction equipment and machinery, heat, utilities, transportation,
taxes, overhead, markup, incidentals and services necessary for the execution and
completion of the Work in the Contract Documents to be performed under this Contract.
For the Work described, the allowance and unit price, actual used and installed quantities
of each bid item shall be measured in the field and certified by the Engineer and/or
Owner upon completion of construction in the manner set forth for each item in this and
other sections of the Specifications. Payment for all items listed on the Bid Form will
constitute full compensation for all Work shown and specified to be performed.
B. The following Items 1.1 through 1.18 comprise the Base Bid Total as listed on the Bid
Check seal chamber oil level and lubrication of seals.
Check proper rotation.
Check power supply voltage.
Megger for insulation breaks or moisture.
Measure motor no-load current.
Manually trip sensors and check complete cycle of control operation.
Supervise field test of each grinder.
Supervise initial startup and operation of each grinder.
Instruct Owner’s personnel in proper operation and maintenance of grinder.
Prepare and certify field inspection report.
ADJUSTING
A. After installation, align, balance, and adjust the grinder and accessories as required for
proper operation and proper alignment.
END OF SECTION
BL038-20
REVISED BID FORM
16
(This Bid Form is part of the Bid Documents) : BID NUMBER: BL038-20 BID DATE: May 5, 2020
SUBMITTAL DATE:
BY: (Bidder)
PROJECT DESCRIPTION: Brooks Road Pump Station Improvements THIS BID IS SUBMITTED TO: Gwinnett County, Georgia (hereinafter called Owner) acting
through its Board of County Commissioners 1. Undersigned Bidder offers and agrees to enter into Agreement with Owner, in
accordance with the instructions, requirements and forms included in Bid Document Package (including the NOTICE OF BID, Instructions to Bidders Package and Pre-Qualification Package [where applicable]), and to complete all Work for the Bid Price and within required calendar days, all in accordance with the Bid Document Package.
2. Bidder accepts terms and conditions contained in Bid Document Package including
without limitation those dealing with Owner's time for accepting Bid and disposition of Bid Security.
3. In submitting this Bid, Bidder makes representations required by Instructions to Bidders
and further warrants and represents:
a. Bidder has examined Bid Document Package, including NOTICE OF BID and Instructions to Bidders, and following addenda:
No. Dated No. Dated
No. Dated No. Dated
No. Dated No. Dated
No. Dated No. Dated
b. Bidder has examined site and locality where the Work is to be performed and
legal requirements (federal, state, and local laws, ordinances, rules, and regulations) and conditions affecting Work cost, difficulty, progress, or performance and has made independent investigations as Bidder deems necessary.
c. Bidder has carefully studied reports and drawings indicating subsurface
conditions and drawings depicting physical conditions as identified in General Conditions and accepts determination concerning technical data contained in reports and drawings on which Bidder is entitled to rely.
BL038-20
REVISED BID FORM
17
d. Bidder has obtained and carefully studied (or assumes responsibility for obtaining and carefully studying) examinations, investigations, explorations, tests, and studies (in addition to or to supplement those referred to in "c." above) pertaining to subsurface or physical conditions at site or otherwise affecting cost, progress, performance, or furnishing Work as Bidder considers necessary for performing or furnishing Work at Contract Price, within Contract Time, and in accordance with terms and conditions contained in Bid Document Package, including specifically provisions stated in General Conditions and no additional examinations, investigations, explorations, tests, reports, or similar information or data are or will be required by Bidder.
e. Bidder has reviewed and checked Plans and data shown or indicated on Bid
Document Package with respect to existing underground facilities at or contiguous to site and assumes responsibility for accurately locating underground facilities. No additional examinations, investigations, explorations, tests, reports, or similar information or data concerning underground facilities are or will be required by Bidder in order to perform and furnish Work at Contract Price, within Contract Time, and in accordance with terms and conditions contained in Bid Document Package, including specifically provisions stated in General Conditions.
f. Bidder has correlated results from observations, examinations, investigations,
explorations, tests, reports, and studies with terms and conditions contained in Bid Document Package.
g. Bidder has given Owner written notice concerning conflicts, errors, or
discrepancies discovered in Bid Document Package and written resolution by Owner is acceptable to Bidder.
h. This Bid is genuine and not made in interest of or for any undisclosed person,
firm, or corporation and is not submitted in conformity with any agreement or rules produced by any group, association, organization, or corporation; Bidder has not directly or indirectly induced or solicited any other Bidder to submit false or sham Bid; Bidder has not solicited or induced any person, firm, or corporation to refrain from bidding; and Bidder has not sought by collusion to obtain for itself any advantage over any other Bidder or over Owner.
i. Bidder should submit a projected Monthly Cash Flow projection with the bid. The
monthly projections should add up to the Bid Amount on the Bid Form.
BL038-20
REVISED BID FORM
18
4. Bidder submits the following lump sum/unit prices for the Brooks Road Pump Station Improvements identified in Bid Form as part of this Bid. Bidder submits the following lump sum/unit prices for the Brooks Road Pump Station Improvements identified in Bid Form as part of this Bid. Work included within each Bid Item is described in Section 01 22 15, Measurement and Payment. The bid schedule breakdown is provided to facilitate bid evaluations. The Bidder shall ensure that the Base Bid Lump Sum Items Total covers all work to be performed for this project as indicated in the Contract Documents.
BID SCHEDULE
Part 1 – Base Bid Lump Sum Items
Bid Item No.
Description Bid Price (Lump Sum)
1.1 Mobilization/Demobilization (5% Maximum) $
1.2 Site Improvements $
1.3 Civil/Mechanical Demolition $
1.4 Bypass Pumping $
1.5 Furnishing New Pumps $
1.6 Installing New Pumps $
1.7 Furnishing New Channel Grinder $
1.8 Installing New Channel Grinder $
1.9 Access Hatches $
1.10 Roof Extension Over Monorail Hoist $
1.11 Pumps Service Platforms $
1.12 New Emergency Generator $
1.13 Electrical Demolition $
1.14 Electrical Improvements $
1.15 Instrumentation & Control Improvements $
1.16 Service Power – Georgia Power Cost1 $0.00
1.17 Service Power – Contractor Administration Cost $
Part 1 – Base Bid Lump Sum Items Total (Items 1.1 to 1.17): $
Note: 1. The Bid Price for Bid Item No.1.17, Service Power – Georgia Power Cost, is $0.00
BL038-20
REVISED BID FORM
19
Part 2 – Owner Directed Unit Price Items
Bid Item
No. Quantity Unit Description Minimum
Unit Price
Contractor Unit
Price
Total Bid Price
2.1 4 WEEKS
Additional Bypass
Pumping
$31,750.00/W
EEK $ /WEEK $
2.2 10,000 SQ FT Non-Structural
Concrete Repair $20.00/SQ FT $ /SQ FT $
2.3 100 LF Pressure Injection,
Concrete Cracks $50.00/LF $ /LF $
2.4 80 CU YD Earthwork $60.00/CU
YD $ /CU YD $
2.5 40 CU YD Flowable Fill $200.00/CU
YD $ /CU YD $
2.6 20 CU YD Cast-in-Place Concrete $400.00/CU
YD $ /CU YD $
2.7 60 TONS Asphalt Pavement
Milling and Repaving $250.00/TON $ /TON $
2.8 500 LF 3/4” Conduit and Wire
Controls $10.50/ LF $ /LF $
2.9 250 LF 3/4” Conduit and 3#12
Wire $13.00/ LF $ /LF $
2.10 200 LF 3” RGS Conduit
Exposed $10.00/ LF $ /LF $
2.11 400 LF 4” RGS Conduit
Exposed $25.00/ LF $ /LF $
2.12 10 EA Emergency Lights
Installed $350.00/ EA $ /EA $
BL038-20
REVISED BID FORM
20
Bid Item
No. Quantity Unit Description Minimum
Unit Price
Contractor Unit
Price
Total Bid Price
2.13 5000 LF Replace #16AWG 300
volt control wire $1.50/ LF $ /LF $
2.14 2600 SF
Painting/coating
exposed piping and
steel surfaces
$10.00/SF $ /SF $
2.15 3300 SF Painting/coating of dry
well concrete flooring $4.00/SF $ /SF $
2.16 2800 SF
Painting/coating of
electrical room
concrete flooring
$4.00/SF $ /SF $
2.17 29000 SF
Painting/coating of
concrete surfaces in
the wet wells, (WW-
301, WW-302, WW-
303) distribution
chamber (DC-200),
and inlet chamber (IC-
200)
$25.00/SF $ /SF $
Part 2 – Unit Price Items Total (Items 2.1 to 2.17): $
TOTAL BID (Part 1 + Part 2): $
5. Major Equipment Items - All major equipment items included in the lump sum bid item shall be bid according to the following:
a. The Bidder must include in the lump sum cost the named Manufacturer/Supplier from the project specifications. If an acceptable deduct is provided for substitute equipment and the equipment is accepted by the OWNER, the amount of deduct shall be accounted for by a change order after award of the contract by the OWNER.
b. Should a Bidder fail to indicate which manufacturer or supplier his Base Bid is based on, or circles more than one listed manufacturer/supplier per item, the Bidder shall provide the first listed (“A”) manufacturer/supplier for his Bid for the amount included in the Total Base Bid at no increase in the Contract amount.
c. The Bidder may indicate a Substitute Manufacturer/Supplier by writing in the substitute and writing in the amount of deduct for the Substitute Manufacturer/Supplier. Should a write-in substitute be disallowed by the ENGINEER as “not equal” or “not desired,” then the Bidder shall supply the circled Manufacturer/Supplier. If no substitute is indicated, the Bidder must supply the circled item.
d. A substitute Manufacturer/Supplier will be deemed approved equal provided the proposed substitute is explicitly demonstrated by the Bidder to be equivalent to or better than the product named and described in the Specifications in form, function, performance, reliability, quality, and general configuration. Determination of equality in reference to the project design requirements will be made by the ENGINEER.
BL038-20
REVISED BID FORM
21
e. Changes by the Bidder to items listed in the Major Equipment Schedule will NOT be considered after receipt of Bids.
f. Design of this project is based upon the Manufacturer/Supplier's equipment noted as the (A) item in the Schedule. Should a Bidder propose furnishing another named or substitute Manufacturer/Supplier, he shall comply with the following:
i. In addition to the deduct (if any) offered, the Bidder SHALL REIMBURSE THE ENGINEER THROUGH THE OWNER FOR ANY ASSOCIATED REDESIGN AND/OR CONSTRUCTION DRAWINGS BY ANY DIMENSIONAL, MECHANICAL, ELECTRICAL, INSTRUMENTATION, STRUCTURAL, AND ARCHITECTURAL CHANGES AND/OR REQUIREMENTS FOR THE SUBSTITUTE’S USE. The Bidder, therefore, shall include in his/her bid for such substitute Manufacturer/Supplier all additional CONSTRUCTION cost (civil, mechanical, architectural, structural, electrical, instrumentation and engineering redesign cost) associated with that substitute equipment, material, or supplier. The bid for such substitute Manufacturer/Supplier shall also include the cost of any paid licenses necessary for the use of the equipment if required by the manufacturer.
ii. Reimbursement for engineering costs shall be based on the ENGINEER’S labor cost shall be as listed in the Supplementary Conditions.
g. In order that the OWNER may determine if the proposed NAMED (B, C, etc.) Manufacturer/Supplier be equal to the named (A) Manufacturer/Supplier, the information below must be submitted if requested by the OWNER for each NAMED Manufacturer/Supplier entered WITHIN 7 DAYS OF OWNER’S REQUEST. This request will only be made after receipt of Bid Form. This submittal requirement does not apply to an unnamed substitute Manufacturer/Supplier, the requirements for which are outlined later:
i. Dimensional and weight information on components and assemblies.
ii. Catalog information and cuts.
iii. List of requested exceptions to the Contract Documents.
iv. Any additional information requested by the ENGINEER.
h. In order that the ENGINEER may determine if the proposed, unnamed substitute write-in item shall be allowed, the information below shall be SUBMITTED WITH THIS BID FORM. This submittal is NOT required for a named substitute Manufacturer/Supplier listed as (B), (C), etc.
i. A list of any and all deviations from the technical requirements of the Contract Documents.
ii. Dimensional and weight information on components and assemblies.
iii. Catalog information and cuts.
iv. Manufacturer's specifications, including materials description and paint systems.
v. Performance data and pump curves, as applicable.
vi. Horsepower and electrical characteristics of all motors supplied.
BL038-20
REVISED BID FORM
22
vii. Outside utility requirements for each component, such as water, power, air, etc.
viii. Functional description of any package Instrumentation and control systems supplied.
ix. List of parameters monitored, controlled, or alarmed.
x. Addresses and phone numbers of nearest service center and listing of the manufacturers or manufacturers representatives' services available at this location.
xi. Addresses and phone numbers for the nearest parts warehouse capable of providing full parts replacement and/or repair service.
xii. A list of the three most recent installations where similar equipment by the manufacturer or manufacturers' representative is currently in service; include contact name, telephone number, mailing address, and the names of the ENGINEER, OWNER, and installation contractor; if three installations do not exist, the list shall include all that do exist, if any.
xiii. Description of structural, electrical, mechanical, and all other changes or modifications necessary to adapt the equipment or system to the arrangement shown and/or functions described on the drawings and in the Technical Specifications.
xiv. Any additional information requested by the ENGINEER.
xv. Additional space requirements and/or accessories.
xvi. An estimation of time of delivery.
BL038-20
REVISED BID FORM
23
Major Equipment Schedule
Section Number
Description Manufacturer/Supplier Amount of Deduct for
Substitute Manufacturer/Supplier
26 12 19 Three-Phase Transformers
A. Cooper Power Systems
B. ABB Substitute________________
$___________________
26 22 16 Low-Voltage Transformers
A. General Electric
B. Square D
C. Siemens Substitute________________
$___________________
26 29 13 Soft-Start Motor Controllers
A. Rockwell
B. Benshaw
C. Schneider Substitute________________
$___________________
26 32 13 Diesel Engine Generator Sets
A. Cummins-Onan
B. Kohler
C. Caterpillar Substitute________________
$___________________
33 34 16 Plug Valves A. DeZurik
B. Val-Matic
C. Henry Pratt Substitute________________
$___________________
33 34 16 Swing Check Valves A. DeZurik (APCO) B. GA Industries C. Crispin Substitute_______________
$___________________
BL038-20
REVISED BID FORM
24
33 34 16 Air Release Valves A. Vent-O-Mat Series RGX
B. Vent-Tech
C. A.R.I. Substitute_______________
$___________________
40 94 43 Programmable Logic Controller
A. Allen-Bradley
ControlLogix Substitute ________________
$___________________
43 21 39 Submersible Pumps A. Flygt by Xylem, Inc. Substitute ________________