Combined Prebid Questions and answers 8-4-2009.doc

Response to Contractor’s Questions

7/30/2009

1. Will the Government be responsible for water valve control of opening and closing of the existing valves for construction?

A) Yes, Valve closures must be scheduled through a 355 Civil Engineering Squadron (CES) customer service, service call, with and performed by DM’s Plumbing Shop. Two weeks advance notice is required.

2. Whose responsibility will it be to notify building managers of water shut downs?

A) CES Customer Service will notify users of shut down.

3. During the water shut down and draining period, will the water be allowed to drain into the street curbs and let run until draining is complete?

A) The use of temporary piping will be used to channel the water to desired locations on base as directed by the base POC.

4. Will a schedule or replacement plan be provided for the valves and hydrants to be replaced?

A) Valves to be replaced have been identified on the amended site plan. The contractor will work with CES customer service to schedule replacements.

5. During the excavation of the replacement valves and hydrants will the excavated materials be allowed to remain at the excavated site or will the materials have to be removed to another site and hauled back in during the backfill process?

A) If excavated dirt remains at the individual job site, it must be protected and not allowed to enter into the storm drainage system, i.e. proper best management practice for SWPPP.

If the site does not have adequate storage space DM will provide temporary storage locations. However, all unused excavated material must be hauled off base at the cost of the contractor.

6. If extra clean generated excavated materials are accumulated during construction will a place be available on base to lose the clean excavated materials or will the material need to be hauled off base?

A) All excavated material that is not returned to the ground must be hauled off base.

7. Attachment 4 (Electrical Design) the Fire Alarm System they are asking for a new Fire Alarm System for the Consolidation MXG HQ. Where is that building on the map. I don’t remember seeing that building on the tour. Can you get us any information on this.

A) Omit this portion of the solicitation. There will be no work performed on the fire alarm system. How much should be omitted?

8. Besides Building 185, which of the 13 sites indicated under “New Electrical Work” in Attachment 3 do not already have a 480V, 3Ph service?

A) None.

9. Will any of the new electrical services, besides Building 185, require a new distribution transformer to step down distribution voltage to 480V?

A) No.

10. For sites requiring a new distribution transformer(s), such as Building 185, can the transformer be sized for the actual load or do you want it fully sized for an ultimate load of 400A (i.e. 112.5KVA)?

A) Appropriately size the transformer for the size of the building service entrance. See questions # 29, 12, 43 for the answer there.

11. Page 1 of Attachment 3 mentions installing new VFDs at Wells 4, 6, 16 & 17. However, Page 3 of Attachment 3 calls for new VFDs at Wells 2, 4, 6, 16, 17 and Building 185. Which one is correct?

A) See matrix.

12. Page 3 of Attachment 3 mentions providing LAN service where there is no existing LAN connectivity. Which sites does this apply too? What type of media (fiber-optic cable, dialup telephone, etc) and how far would we have to go with conduit, trench and backfill to make connection to the existing LAN?

A) Four 1 inch inner duct inside of a 4 inch outer duct is available at all sites.

13. Please clarify exactly what voltage and amperage electrical service you want for Building 185?

A) This will be determined by the design phase. See 29,43,9 for their answers.

14. How many flow meters and what size are required for Building 185 as indicated on Page 2 of Attachment 3? Is it one on the 4” line and another one on the 10” line?

A) One 10” water meter.

15. Will this require one or more underground concrete vaults to accommodate the flow meters?

A) See Matrix.

16. Please clarify exactly what voltage and amperage electrical service you want for each water tower.

A) See Matrix.

17. Who is responsible for providing PLC cabinets?

A) The Government

18. Who is responsible for PLC programming and SCADA graphics configuration?

A) The Government

19. What type of flow meter do you want? What is the make and model of existing flowmeters?

A) See Matrix.

20. Attachment 4, Part 8 (Electrical Design), Communications part 5a states “Communication systems shall include a government telephone system, and a LAN system installed to and operating in the MXG HQ facility”. 5a goes on to call for PVC coated rigid steel conduit encased in concrete, foundations and/or floor slab penetrations, and that the conduit routing shall be coordinated with Cox and Qwest. It appears 5b, 5c and 5d go on to provide supplemental information for 5a? Is this correct? If so, it appears (3) 4” conduits and conductors are to be installed from the main telephone/data communication backboards to an existing manhole. Can you please tell us how many feet of trench and backfill is required and any other information that may help us to understand what exactly is required for this portion of the project?

A) Please see the provided site maps to determine trenching quantities.

21. What is the basis of choosing 800-gpm for the boosters at Building 185?

A) Capacity of 10” pipe @ system Pressure.

22. What is the discharge pressure at Well No. 7?

A) N/A Well # 7 requires no pump work.

23. CLIN 0005 is described as “Additive Item Construct Grit Removal Sys” and CLIN 0006 as “Design fee additive item.” Since both items are “additive” by nature, it seems that the government reserves the right to award CLIN’s 0005 and 0006 as it sees fit. Please advise relative to how the government’s statutory limit for CLIN’s 0001, 0003, 0005 and 0006 of $750,000 will be applied with regards to the “additive” nature of these two items.

A) If CLINs 0001, 0003. 0005, and 0006 total more than $750K, CLINs 0005, and 0006 will not be awarded. See CLIN 0001, Solicitation page 40 note 12, and Clause 252.236-7007 for more information.

24. In the Pre-Proposal Conference/Site Visit there were a lot of questions and request for additional information that is not within the existing Documents, Exhibits and other attachments. This additional information will greatly help in developing a comprehensive and cost effective proposal; however, this information may not get distributed to interested parties until late in the week of May l7th This would only leave one week to review and put together a Proposal. Could the due date for Proposals be postponed by two weeks to, June 12,2009?

A) There will be absolutely no extensions for proposals.

25. Where and when will the Base Design Guide Compatibles Guidelines be made available that are referenced throughout the Project Documentation?

A) The Design Compatibilities Guidelines have been posted.

26. Pump houses are to have internal motion sensors and magnetic door switches connected to a new Vindicated Panel at each location. There is no mention of internal or exterior security cameras are these items required for this project?

A) All security systems shall be connected to the copper communication lines.

External cameras are required outside of each well. No internal motion detectors shall be installed inside of environmentally controlled buildings. All operational monitoring systems shall be tied into the CE LAN. Only well 6 requires a new CCTV.

27. Attachment 4, 0101l-1 identifies, all fence are to have magnetic lock on gates, are these only for the 3 foot man-gates or does it include the vehicle gates? What is the current make and manufacture of the fence sensors, and card swipe in use?

A) Cypher locks are required at the man gates. Litton 4-Zone Processor, Litton Fence Kit are currently installed on the fences.

28. Who will be responsible for programming the new system into the Base System?

A) The Government is responsible for the programming of the security systems via the security contractor is Native Tele-Data Solutions, Inc.

29. Currently do all existing well sites or proposed new well sites have Base LAN via Fiber Optic Cable and if not which ones are they and how far away is the nearest connection point of Fiber? Is this fiber LAN system the same as what is monitoring the security system and CE LAN Controls currently?

A) Four 1 inch innerduct inside of a 4 inch outerduct is available at all sites. All security systems shall be connected to the copper communication lines.

30. Building 185 has an overhead 100 amp power service that is to be upgraded to a 200

Amp service. What size is the current pole mounted transformers and do these need to be up-sized for the new load and if so whose responsibility would this be?

A) The contractor is to provide a 225 kVA pad mounted transformer. High voltage cable in conduit must be run under the road to the new transformer and then wired to the disconnect per ACC standards.

31. Does the existing building get a new 200 AMP service and a second 200 amp service for the new pump house at 185?

A) See questions # 29, 12, and 43 for the answer there.

A) The current transformer on the Pole is 100 kVA and the winning contractor will be responsible. The new building requires 400 amps and the existing building must be upgraded to 400 amps.

32. How far away is the nearest transformer that can handle the new 200 amp load required at Site 5's Water Tower?

A) The nearest transformer is approximately 210’ from the existing tower. There is a pullbox at the foot of the tower. See site maps.

33. Water Tower at Site 5 has three different groups of controls, Security, Water level and Cathodic protection are all these to be in corporate into the new control cabinet/building?

A) Rectifier shall be placed on the towers, all other controls will be installed in the new control building.

34. What controls interface cabinets and programming are being provided by DM base and at what sites will this equipment & programming be provided for?

A) DM will provide the controls for the project.

35. Does the Water Tower at Site 5 have any clearance lights for air traffic and what are the requirements for this equipment to be moved?

A) Yes air traffic lights will be required.

36. Is there a list of what equipment needs to be transferred to the new Water Tower Tank and what is currently abandoned and not in use?

A) All equipment will be transferred. Security Cameras, aircraft traffic lighting, speakers and operational monitoring equipment.

37. The design requirements call for VFD drive pumps, the pumps currently are not being operated with variable speed systems, can soft start motor controls be used instead of VFD's?

A) No. The base wants to be in control of water production and energy usage.

38. What is the name and brand of the current water flow meters used and what equipment is required to interconnect them to the Bas LAN system?

A) Metron Farnier or approved equal. Must use scadametric unit to interconnect to the base LAN.

39. Attachment3,page 3, New electrical works call for new 400 amp service, ION 7350

Meters, transfer switch, mobile generator connection point at 2,4,6,9,10,11,15,16,17

Building 185, Plumbing shop, Base Water Tower and the new Site 5 Water Tower.

Do all these sites require this complete list of upgrade or only some of the system?

In other parts of the statement of work some of these sites have greater or lesser requirements? What exactly is requested at each site?

A) See matrix.

40. What is the scope of work required at the Plumbing shop?

A) Omit work performed at the plumbing shop.

41. Do the new well sites require any chlorination/water treatment systems, if so what sites are they and what will be required?

A)Yes, the chlorination system is an erosion feeder using a bleach solution.

42. Could a matrix be created by DM listing each site and what is exactly required to be designed, installed and/or upgraded?

A) See matrix.

43. Does the Water Treatment Plant have any spare power switches within the existing switchgear available for the new Grit Separator?

A) Yes.

44. Who is the contractor that currently is under contract to maintain the Fence Security and Intrusion system?

A) NTDS is responsible for the maintenance of the intrusion detection system, the fences are not part of this system. NTDS’ equipment is part of the Vindicator System.

Preventronics has the contract on maintenance of the a card readers, cameras, and fence perimeter systems.

If the existing equipment is in excellent working order, then it may be reused. The IDS must remain operable during construction. In the event of an isolated shut down a security contingency must be coordinated and implemented with DM. Currently, security forces monitor cameras and fence perimeter but not card readers.

45. Attachment 6 and 7 have the same project number FBNV 0900034 is this correct?

A) That is a typo and will be corrected.

46. What size are the power transformers currently feeding all areas requiring upgrade in electrical service size, and are they currently properly sized for the new power load requirements? Who responsible for installing new transformers and high voltage equipment if not?

A) Building 185 is the only building that requires a transformer upgrade. Contractor will replace existing transformer with a 225 KVA transformer that meets the DM DCG requirements.

47. In the Design Requirements, attachment 4, section 5, Communications on page 22 &23 Parts a, b, c, d, will this Communications, Tele/Comm conduit and cabling be required at each site and or new pump housing?

A) Yes.

48. How far from each site or new pump housing location is the nearest point of connectionor presents for this equipment or cabling?

A) See the site plans provided.

49. How will the fiber optics tie into the new well controls?

A) See the provided site plans. Connect to nearest communications manhole, building, or splice into nearest line.

47. New Well Pumps: At specified depth (600’), capacity (1,000gpm) and to get a head pressure of 90/95psi, we anticipate a 250hp vertical turbine pump that will require more juice than your existing generators can deliver. Indicating a possible need for 2 new portable units.

A) 600’ placement of the pumps is a conservative estimate. The pump require only 200hp.

48. Someone stated yesterday that you would like a longevity of about 50 years for the wells, is that what you want?

A) The requirement is to drill wells to a prescribed depth and extract a prescribed amount of water. We are expecting that the pumps be placed at a depth to accommodate 1’ of drawdown per year for 50 years.

49. Do you have any relevant pumping information at wells 4, 6, 9, & 2 as to current pumping level, gpm, and above ground required head pressure?

A) All available information is provided in the solicitation, its attachments and or the answers provided here in.

50. Is not really a question but just confirmation that the drill cuttings indeed need to be disposed of off site.

A) If the site does not have adequate storage space DM will provide temporary storage locations. The location will be determined by the base POC.

51. Can we dispose of test pumping water at each drill site within a reasonable distance ( 200 to 300 feet)?

A) Disposal water shall be channeled by the use of temporary piping to the location as directed by the base POC.

52. Some phases of flooded reverse drilling requires 24/7 work in the drilling and/or casing phases of the work, is that permissible?

A) Normal working hours on base are 0700 to 1400. Non standard are available upon written request through base contracting officer.

53. Will water for drilling be provided to us at each drill site via a nearby hydrant? question

A) Yes

54. Does any actual well design drawing exist for the proposed wells?

A) No

55. In running the geophysical log suites on each well pilot hole, some of the logging tools require a low grade radio active source (gamma). the logs in question, are consistently run on municipal wells in the Tucson & phoenix area, will this be permissible at dmafb?

A) See solicitation page 27of55, clause 52.223-7 Notice of Radioactive Materials

(JAN 1997)

56. Do the proposed final well design drawings, as built well drawings, lithologic cutting logs, & pump test reports have to be stamped by a registered professional geologist?

A) Yes

57. During the course of well drilling, there is nuisance water being developed that must be pumped off to keep the water in the borehole clean and silt free, can this be pumped to a nearby area since it dries up within a few hundred feet?

A) Yes

58. Is temporary fencing to be in ground or can it be on stands?

A) Fencing is required, how it is installed in up to the contractor. The contractor should anticipate environmental factors in making this decision. The government will require the fence to remain up in all normal conditions and attended to in abnormal conditions, i.e. high winds.

59. Are there any wind load calculations for new buildings?

A) The building should be able to withstand regional wind loads.

60. How many new buildings?

A) See Matrix Attachment #

61. Does Well 2B get a new building?

A) No

62. Are Evaporative Coolers required or can they be A/C?

A) Evaporative coolers.

63. Security: Can we add to the existing system by direct connect or do we need a new panel and tie into existing system?

A) If a new panel is required it will be government provided.

64. New wells, are the new pumps to be vertical turbine or submersible?

A) Vertical Turbine

65. What are the new pump sizes and capacities?

A) Per design to accomplish the well depth and water extraction quantities.

66. Building 185. How many pumps are here and what kind and size are they?

A) Two 3-inch pumps.

67. Do all the existing wells have pumps in them?

A) See matrix. All new wells require new pumps. The condition of all existing pumps is unknown

68. The existing 2B well’s submersible pump that is to be installed in the new well will probably not product the GPM needed. Please confirm. We believe a new vertical turbine pump will be required here also?

A) removed from scope.

69. New well drilling. How are all the cuttings to be handled? Is there an on-site pit or an above ground tank to be dumped daily on or off site?

A) There are currently no facilities to receive the cuttings. It will be the responsibility of the contractor to haul all waste materials off site.

70. Supply water: 2000gpm is needed for drilling. Who supplies and from where, at what cost?

A) The government.

71. Discharge water: Where can we send the water for testing and well development?

A) Disposal water shall be channeled by the use of temporary piping to the location as directed by the base POC.

72. Drilling: We need to drill continuously, can we drill 24/7?

A) Normal working hours on base are 0700 to 1400. Non standard are available upon written request through base contracting officer

73. What are the conceivable delays and for how long could they be?

A) Normal delays a construction crew might experience would be added to buy Security drills or real security delays. Military priorities, Processing in and out of controlled areas. No set time for any particular delay. The best way to avoid these delays is to maintain an open channel of communication with you CES project manager and CONS contract manager.

74. Is sound protection required?

A) Per OSHA Standards

75. What are the procedures for drilling new and capping old?

A) Cap old well, drill new well, abandon old well.

76. Why are the old wells being replaced?

A) Insufficient water flow.

77. Does new tank need to be elevated, or can it be ground mounted w/booster pumps?

A) Elevated Tank is required.

78. Grit Removal System. What are the flow rates?

A) removed from scope

79. What is the scope of painting and what kind of paint?

A) Per Base Design Capabilities Guidelines.

80. Is the 200K portable generators to be new or are they existing?

A) the generators are government supplied.

81. Who is the utility company on base?

A) Tucson Electric Power (TEP) supplies the base with electrical power. DM is controls it own power distribution system.

82. What needs to have cathodic grounding?

A) Craycroft water tower.

83. Do the new pumps need to have individual PLC panels and where are they installed?

A) The base will provide PLC panels.

84. Where are the termination points for the new 8” waterline paralleling Taxiway Alpha?

A) The termination points of the WL are at the elbows on the south side of the taxiway.

85. What type of pipe are the existing waterlines?

A) See Drawings for pipe type identification.

86. What is the current pressure on the existing lines?

A) See pressure zone maps.

87. Do hydrants need to be painted?

A) Yes, per Base Design Capabilities Guidelines.

88. Please explain buried pipe depth? Is this a cover depth?

A) The depths are to the top of pipe.

89. Can you provide an operating point (Flow Rate and Pressure Requirement) for each pump?

A) Flow rates are part of the well specification. Pressure is indicated on Attachment #15.

90. The Statement of Work and Attachment 5 require that the 8” and 10” waterline be constructed of “AWWA C900, Class 150 PVC”, while Attachment 4 require that the waterline be constructed of “HDPE, black AWWA C901 polyethylene plastic”. Please clarify this discrepancy.

A) Underground water mains and service piping 4-inches and greater shall be AWWA C900, Class 150 PVC with AWWA C111, cast iron fittings and ASTM D3139 compression gasket ring joints. Bury pipe 3 ft below grade and marked with bright-colored continuously printed plastic ribbon tape manufactured for direct burial. In addition to the required plastic ribbon tape, provide an insulated, #12 AWG solid copper tracer wire installed along the tip of all non-metallic pipe.

91. What minimum water elevation is required for the new 100,000-gallon elevated water tank?

A) The current bottom of the tank is 102ft from ground level.

92. Is there a maximum water elevation requirement for the new 100,000-gallon elevated water tank?

A) The curent overflow level is 123ft from ground level.

93. Is there a maximum size for offeror’s proposals, i.e. number of pages, photographs, section tabs and sheet size (8 ½” x 11”, 11” x 17”) for the technical & price proposals?

A) No

94. Attachment 2 – Statement of Work states to install gate valves “every 2000 LF along the new water line”. Attachment 4 – Design Requirements states to install gate valves “every 500ft”. Please clarify this discrepancy.

A) A new gate valve will be installed at each end of the new water lines and every 2000ft. Gate valves shall also be installed on either side of any road, taxiway or airfield crossing. There should be no more than 2000 feet between valves.

95. What are the safety offsets that have to be adhered to on the airfield and what restrictions exist within these offsets?

A) See UFC 3-260-01 for a complete list of safety zones.

96. What is the wastewater composition being discharged into the grit removal system: flows, analysis, source?

A) removed from scope.

97. What is the expected volume of grit removed per day, week, or month?

98. attachment 4 (Electrical Design) the Fire Alarm System they are asking for a new Fire Alarm System for the Consolidation MXG HQ. Where is that building on the map. I don’t remember seeing that building on the tour. Can you get us any information on this.

A) This section entry is in error. Disregard.

99. where will the site 5 storage tank water be disposed?

A) The contractor should work with the base to schedule the draining of the tank producing as little waste as possible.

100. Where will the new and replaced well water be disposed for testing?

A) Disposal water shall be channeled by the use of temporary piping to the location as directed by the base POC.

101. Will water be available at the site for test? Air Force provide?

A) yes

102. Attachment 2, SOW, describes the underground waterline material that is greater than 4” to be C900, Cl 150 PVC. It also calls out for waterline valves to be spaced on center every 2,000 lf. Attachment 4, Section 01011-Design Requirements, describes the underground waterline material that is greater than 4” to be black HDPE per AWWA C901. It also calls out for waterline valves to be spaced on center every 500 lf. Please clarify which attachment contents are to be adhered too.

A) Underground water mains and service piping 4-inches and greater shall be AWWA C900, Class 150 PVC with AWWA C111, cast iron fittings and ASTM D3139 compression gasket ring joints. Bury pipe 3 ft below grade and marked with bright-colored continuously printed plastic ribbon tape manufactured for direct burial. In addition to the required plastic ribbon tape, provide an insulated, #12 AWG solid copper tracer wire installed along the tip of all non-metallic pipe

103. In Section B, CLIN 0001, 0002, 0003, 0004 are represented as being the scope of the base bid and CLIN 0005 AND 0006 are represented as being an additive alternate to the base bid. Are we to assume that if the offer is awarded, CLIN 0001 through 0004 will be awarded as the base bid in its entirety without any chance of a CLIN being eliminated out of the base bid?

A) This is a correct assumption.

104. Can you tell me what the average and peak flows are for the grit system?

At the end of attachments 2 and 3, in the section discussing specifications, it states that the Contractor will provide new specifications based on UFGS specifications, Air Force standards, and the existing base design compatibility guidelines (DCG).

105. Is the Contractor provided standard specifications (that) need to be modified to make project specific, or

Is the Contractor to develop and prepare their own specifications for the project in compliance with Air Force standards and existing base

DCG?

A) The contractor shall use UFGS specifications, Air Force Standards and the DCG.

106. Is there a water model of the water distribution system network available?

A) The base has a water model developed using H20MAP. Attachment #

107. When/where will the Design Compatibility Guidelines and the specifications and standards be available?

A) The DCG has been posted.

108. What responsibilities are there for the ARRA Stimulus tracking and documentation?

A) The contractor is responsible for all information reporting detailed in the Federal Acquisitions Requirements (FAR), Department of Defense Federal Acquisitions Requirements Supplement, (DFARS), Air Force Federal Acquisition Requirements Suppliment (AFFARS), and the requirements of this solicitation. The contractor is asked to pay attention to the clauses that were pointed out during the Pre-Proposal Conference and site Visit. The contractor’s attention is also directed to the solicitation page 20 of 55, Clause 52.204-11 American Recovery and Reinvestment act-Reporting Requirements (MAR 2009)

109. Changing the requirement for 100% to 90% plans and specifications for cost reduction to the Government; is this decision at bid or negotiations?

A) At bid.

110. Is the contractor to collect the Contractor Performance Questionnaires and transmit, to assure they arrive timely?

A) Questionnaires are to be sent from your references to the 355 CONS as directed by page 41 of 55, 4th line from the top of the page.

111. Solicitation, Offer, and Award form; Pg. 40 of 55, item 5; does the Government want Questionnaires done for the A/E, or just construction subcontractors.

A) Questionnaires are required from major subcontractors per solicitation page 40 of 55, Proposal Preparation Instructions, 5.

112. Is it unclear whether the additive alternate is priced within the $750K package and then separately as well.

A) See CLIN 0001. The additive item is subject to the $750K statutory limit. Also see solicitation page 40 of 55, Special note 12. Also see the solicitation page 50 of 55, clause 252.236-7007 Additive and Deductive Items (Dec 1991).

113. Solicitation, Offer, and Award form; Proposal instructions page 40 of 55 item 3a, “…assemble the solicitation document in accordance with appropriate instructions…”; which ones and where?

A) The contractor is responsible for assembling all the information required by the FAR, DFARS, AFFARS, and the requirements of the solicitation, to include page 40 of 55, Proposal Preparation Instructions.

114. Solicitation, Offer, and Award form; Pg. 41 of 55, Items 5d and e; Teaming Arrangements, does this apply to the Contractor/AE’s teaming or just to construction subcontractors? Are A/Es and subcontractors considered a “teaming arrangement”?

A) See FAR Part 9.6 for details on teaming arrangements.

115. Will a hydraulic model be provided of the current water system?

A) Pressure zone maps and operating pressures have been provided.

116. Are there 3 or 4 pump houses e.g. “…adjacent to building 185, if needed.”

A) There are 3 pump houses, 4, 6, 9 and one booster station enclosure to be constructed next to building 185.

117. New fencing: “…around well 2B and any (how many) well or pump house outside the current fenced area”; and how much fenced are is necessary to pull in mobile transformers?

A) Contractor is to install a 10’X 18’ concrete pad, properly ground as to not create a tripping hazard. The pad must sloped to drain away from the site.

118. Clarify, “install pressure reducing valve and bypass 300 yards north of air traffic control tower to control flow of water back to main base.”

A) By connecting the piping, at the Air Traffic Control Tower, to the eastern pressure zone, are PRV must be installed NW of the ATC in order to prevent overflow of existing water tanks.

119. Is the new water line pipe to be AWWA C900 or AWWA C901 as called out in attachment 4?

A) Underground water mains and service piping 4-inches and greater shall be AWWA C900, Class 150 PVC with AWWA C111, cast iron fittings and ASTM D3139 compression gasket ring joints. Bury pipe 3 ft below grade and marked with bright-colored continuously printed plastic ribbon tape manufactured for direct burial. In addition to the required plastic ribbon tape, provide an insulated, #12 AWG solid copper tracer wire installed along the tip of all non-metallic pipe.

120. Are new gate valves to be installed in the new water line every 2000 ft or as called out as 500’ in attachment 4?

A) A new gate valve will be installed at each end of the new water lines and every 2000ft. Gate valves shall also be installed on either side of any road, taxiway or airfield crossing.

121. Is there additional design criteria for the Grit Removal Plant? Where is the grit removal plant to be located?

A) Removed from scope

122. Are any other instrumentation or appurtenances (i.e., piezometer tube) to be installed downhole other than submersible pump, drop pipe, check valve, and power cable?

A) Contractor will utilize the design phase of the project and install whatever is required to meet the terms of the contract and all applicable codes and regulations.

See Questions # 153, 178, 78, 98, and 105.

123. Are there any testing requirements (yield and water quality) prior to purchase/installation of a pump in each well?

A) Contractor is required to perform all testing per applicable codes and regulations.

124. Is "cap" synonymous with "abandon"?

A) No, Wells 2, 4, 6 and nine shall be properly capped. When replacement wells are fully operational, wells 2, 4, 6, and 9 shall be properly abandoned.

125. Clarify that "near" is identified to be within a defined area on site plat maps. Have these new locations been identified?

A) See attached site plans. Near can be defined as 200’.

126. What are the locations of other well outside of the base, and is there any possibility that the new wells will interfere with existing, off-base wells?

A) Off base wells are not within the scope of this project.

127. Are any of the proposed wells located in close proximity (vertical and horizontal) to any known groundwater contaminant plumes?

A) No.

128. What are current static water levels and rights of drawdown in each of the existing wells 4, 6, 9 and 2B?

A) Current static water levels are between 364’-375’.

129. Where is well 2B located? (Note: Drawings provided in the solicitation show the location for well 2).

A) Well 2B is located adjacent to well 2.

130. Is the replacement well for well 4 to be potable or non-potable?

A) Potable.

131. Is Assured Water Supply study required?

A) No.

132. Is Source Water approval from ADEQ required?

A) All necessary ADEQ and ADWR permits are required.

133. Have any deep wells (i.e., between 1,000 and 1,200 feet) been drilled in the vicinity of the base? If so, are there any geophysical logs for those wells?

A) Yes. See attached logs.

134. In the solicitation it is called out that the static water level is above 600 feet below ground surface. What is known regarding lithology at the new well locations at depths between 450 and 1,200 feet?

A) See attached soil boring log for well 12.

135. The existing wells are welded steel. Will the replacement wells have steel casing?

A) Yes.

136. Will a limited diameter well be drilled first to determine lithologic conditions and potential water-bearing zones prior to final well installation?

A) No.

137. If adequate production is not acquired in replacement wells, will new locations be determined by the base or will consultant have the option of selecting appropriate well sites?

A) No.

138. Will the contract be amended if adequate water production is not feasible at designated replacement well sites?

A) No.

139. How do we verify valve sizes for replacement?

A) See attached site plan.

140. Is the water tower active, or abandoned, as far as operational logistics?

A) The water tower is active.

141. Are new gate valves to be installed in the new water line every 2000 ft or as called out as 500’ in attachment 5?

A) A new gate valve will be installed at each end of the new water lines and every 2000ft. Gate valves shall also be installed on either side of any road, taxiway or airfield crossing.

142. Clarify the call out “to install new VFDs at wells 4, 6, 16, and 17, with new VFDs at 16 and 17 only” in attachment 5? Does well 2 to have a new VFD?

A) See matrix

143. How many pumps are located on existing building 185?

A) Two 3-inch pumps.

144. Can fire hydrants be replaced without interruption of the main line (i.e are there isolation valves located on each side of the main line at each fire hydrant?)

A) Water lines will be isolated by the government as necessary.

145. Please clarify what type of cathodic protection is needed for well pump houses, building 185, plumbing shop, Craycroft Road base water tower and the new Site 5 Water Tower. What is the design criteria?

A) New impressed current cathodic protection is only required at the Site 5 water tower.

146. Pump house at well #4, clarify security requirements, intrusion detection, vindicator panel, connect to Base LAN via F.O., telephone to security.

A) Connect all equipment monitoring to the CE LAN. Tie all cameras, fence tumblers, door alarms and exterior motion detectors to the vindicator panel that connects to the copper line to security. Provide magnetic card swipes at man gates. NO phones are required.

147. Pump house at well #6, clarify security requirements, intrusion detection, vindicator panel, connect to Base LAN via F.O., telephone to security.

A) Connect all equipment monitoring to the CE LAN. Tie all cameras, fence tumblers, door alarms and exterior motion detectors to the vindicator panel that connects to the copper line to security. Provide magnetic card swipes at man gates. No phones are required.

148. Pump house at well #9, clarify security requirements, intrusion detection, vindicator panel, connect to Base LAN via F.O., telephone to security.

A) Connect all equipment monitoring to the CE LAN. Tie all cameras, fence tumblers, door alarms and exterior motion detectors to the vindicator panel that connects to the copper line to security. Provide Cypher locks at man gates. No phone is required.

149. Control cabinet at site 5 water tower; 8’x 8’ x 8’ environmentally controlled controls cabinet, is this the pad for the 6 x 6 control cabinet.

A) The approximate dimensions of the cabinet are 8’ L x 8’ W x 8’ H installed on a 4” unreinforced concrete slab on grade with dimensions of 9’ x 9’.

150. Grit removal plant at AMARG IWP; what is required for electrical service.

A) Removed from the scope.

151. What will be the hours in the day that are available for the design surveys and construction staking?

A) Normal working hours on base are 0700 to 1400. Non standard are available upon written request through base contracting officer.

152. Are weekends available to collect data for the design survey and construction staking?

A) Yes weekends are available upon written request through base contracting officer.

153. Will there be a requirement for an escort when on the base?

A) Escort is required in secure areas.

154. Will there be a requirement to be on the DMAFB horizontal and vertical datums?

A)Yes, UTM.

155. Will horizontal control points and benchmarks be provided?

A) Yes.

156. Can cameras be used in conjunction with the design survey?

A) Cameras can be used within security guidelines of individual sites. The question may be if they can take pictures during the design phase. Recommend an escort accompany any photographer.

157. Will each of fire hydrant replacement require a site design survey?

A) All equipment that contractor installs or replaces must be on design, construction, and as-built drawings.

158. Will each of water valve replacement require a site design survey?

A) All equipment that contractor installs or replaces must be on design, construction, and as-built drawings

159. Will the DMAFB Engineering Department provide Utility Basemaps and Bluestake services?

A) The base will provide whatever utility and asbuilt drawings that are available. Civil Engineering project manager will assist contractor with on base blue stake.

Contractor is required to contact off base blue stake.

160. Will survey be required for "as builts" or will be construction inspection mark-up be sufficient?

A) Contractor needs to as-built all work. The question may be asking if surveying is required for the as-builts. yes

161. Will there be a safety and security meeting before starting the work?

A) Yes.

162. Page 9, paragraph Q.6. Please clarify what type of cathodic protection is needed for valves, fittings, bends, etc. (i.e. polyethylene wrapped, sacrificial anode, impressed current).

A) Provide sacrificial anodes for all cast iron fittings.

163. Page 12, paragraph 4. Is there an existing geotechnical report? If so, please provide.

A) Government has provided existing reports with soil boring logs.

164. Paragraph 1.01.A and B: Information is missing.

A) Spec section 1010 is provided in boiler plate form for contractor’s edit. Contractor shall make changes as necessary while generating specs package.

165. Paragraph 1.06.A: Information is missing.

A) Spec section 1010 is provided in boiler plate form for contractor’s edit. Contractor shall make changes as necessary while generating specs package.

166. Paragraph 1.06.B: Is this paragraph applicable to the project.

A) Spec section 1010 is provided in boiler plate form for contractor’s edit. Contractor shall make changes as necessary while generating specs package.

167. Paragraph 2.01.A.3: Verify if paragraph is NOT USED.

A) Spec section 1010 is provided in boiler plate form for contractor’s edit. Contractor shall make changes as necessary while generating specs package.

168. Paragraph 2.04: Verify if paragraph is NOT USED.

A) Spec section 1010 is provided in boiler plate form for contractor’s edit. Contractor shall make changes as necessary while generating specs package.

169. Paragraph 2.05.F: Verify if paragraph is NOT USED.

A) Spec section 1010 is provided in boiler plate form for contractor’s edit. Contractor shall make changes as necessary while generating specs package.

170. Paragraph 2.06.C.3: There is duplication of paragraphs. Please verify which one applies.

A) Spec section 1010 is provided in boiler plate form for contractor’s edit. Contractor shall make changes as necessary while generating specs package.

171. Paragraphs after paragraphs 2.06: There are multiple paragraphs 2.0, regarding OPERATIONS ON THE AIRFIELD, PROJECT IDENTIFICATION SIGN, PROJECT PROGRESS PHOTOGRAPHS, FENCED STORAGE YARD, and MATERIAL HANDLING AND STORAGE. Please verify if these paragraphs apply to the project.

A) Spec section 1010 is provided in boiler plate form for contractor’s edit. Contractor shall make changes as necessary while generating specs package.

172. Paragraph 3.02.A, B, D, and E: Verify if paragraphs are NOT USED.

A) Spec section 1010 is provided in boiler plate form for contractor’s edit. Contractor shall make changes as necessary while generating specs package.

173. Paragraph 3.03.A and B.: Verify if paragraphs are NOT USED.

A) Spec section 1010 is provided in boiler plate form for contractor’s edit. Contractor shall make changes as necessary while generating specs package.

174. Is the Base Hydraulic Profile available (so we can understand the flow rates through the system)?

A) Pressure zone maps and operating pressures have been provided.

175. Can you provide the current security company point of contact information?

A) Answer: the company is N.T.D.S. To prevent N.T.D.S from receiving calls from multiple potental contractors, have specific question routed through the Contracting Squadron.

176. Can you provide any further information regarding the desired grit removal system as well as the existing plant information?

A) The grit removal system should remove the grit from the grit chamber and place it in the adjacent drying bed and the waste water shall be returned to the headworks.

177. I understand the As-built drawings are a component of the current solicitation package attachments? Answer (sort of)

A) As-builts are expected in order to close out the project.

178. What PL level is required for the install for the IDS?

A) There is no Protection Level associated with the wells.

179. Is there an IDS Air Force Instruction manual available and an approved product list

A) We have provided a list of approved products.

(with the above manuals we will be able to provide a solution that will meet your requirements)?

2. Davis Monthan's current Vindicator system does not run over the

LAN. It is a physical private copper telephone network

(we are working on the design to upgrade the current system to run over the

LAN, but it is the design phase)?

3. There are not current functioning Vindicator systems on the well sites.

180. What is the head required at the wells.

A)The pressure at the well head is 120psi at 1000gpm.

181. Approximately how much water line is to be replaced?

A) 11,000 ft of 8” line Todd’s Collected Question

1) Are the hook ups terminal blocks or plug?

A) Hook Ups are terminal blocks.

2) Will the existing building at well 6 be demolished?

A) Yes the building at well 6 will be demolished.

3) Will the existing building at well 4 be demolished?

A) Yes the building at well 4 will be demolished.

4) What is the fence work required at well 17?

A) 3-strand barbed wire fence should be installed on top of the existing fence in order to prevent entry.

5) The statement of work states the enclosure at the site 5 water tower should be environmentally controlled, however, it also states that a swamp cooler should be installed on a 6” slab. Which is it?

A) A window mounted air conditioning unit should be installed in the building.

6) At building 185, will the existing chlorinator be used for the 10 inch booster pumps, or will a new chlorinating system be installed in the new building?

A) A new siphon feed chlorinating system must be installed in the new building at 185.

7) Will the automatic transfer switches be installed inside the existing buildings?

A) The automatic transfer switches shall be placed inside where they can fit, however, if they do not fit, they must be placed outside in a NEMA 3X enclosure.

8) Are VFDs required for the 3” pumps in building 185?

A) No.

9) If AC pipe is encountered, who is responsible for remediation?

A) No AC pipe should be encountered on this project.

10) is bluestaking required on base?

A) Yes, 10 days minimum required notice.

11) Is lightening protection required at the Site 5 Water Tower?

A) Yes.

12) Who is responsible for the cameras on the tower?

A) One camera is monitored by Site 5, one camera is monitored by security forces. Relocation of these cameras must be coordinated with weapons safety and security forces.

13) Must we bore under the roadway and parking lots for the 8” waterline near Taxiway A?

A) No, saw cutting is acceptable, but they must be protected and repaired after new line is installed.

14) Are there any services connected to the 8” line?

A) Yes, eyewash stations are in the facilities and they must be reconnected per DMDCG.

Questions collected by Bryan

15) Please clarify the chlorination requirement for each pump location requiring modifications, e.g.:

1.

Are we to re-use the existing equipment?

6) At building 185, will the existing chlorinator be used for the 10 inch booster pumps, or will a new chlorinating system be installed in the new building?

A) A new siphon feed chlorinating system must be installed in the new building at 185. At well No. 9, the design can utilize the existing siphon feed system and pipe it to the new building or a new system can be installed in the new enclosure at the well head. The chlorination system must be properly isolated from other equipment.

2.

Are we to furnish new equipment?

A) Yes.

3.

Which site(s) will require the construction of a new partition and exhaust fan to isolate the chlorine fumes?

A) Chlorine Feeders should be partitioned from other equipment.

16) Does well No. 9 require an enclosure?

A) Yes install a 10’ X 10’ metal building on an 11’ X 11’- 4” thick slab. The building shall have removable and reinstallable walls and a removable roof for easy installation and easy maintenance of the pump. Provide a minimum 26 GA metal wall and roof panels for the new pump houses that match the coating and color of the base design compatibility guidelines.