ATTACHMENT N- PPI RESPONSES 29-39.pdf

Page Section Paragraph

1 06/04/26 Gen Req Pg 2;

Sheet G-001

"Description of Work" reads "complete replacement of

Clarifier #2" to include "demolishing the existing structure, excavating the area for the new installation, and managing related utility work"; however, the project drawings and

Sheet G-001 General Note 1 indicates replacement of select components, blasting and painting of select components, and select electrical work. Please confirm that the scope of work for this project is to replace select interior components and complete internal repairs of remaining interior components and that the existing concrete structure is to remain in place and this is not a complete replacement of Clarifier #2

The scope is to replace older and failing items as described in the contrct documents.

Replacement of the existing concrete structure is not a part of this project.

2 06/04/26 G-001 General

Notes 1.5

Sheet G-002 General Notes 1.5 calls for a new NEMA 4X

Control Box. Please provide specifications and/or BOD for this Control Box

Bid as best as possible based on the contract documents.

3 06/04/26

C101

Keynote 4

Keynote 4 states "The contractor will be responsible to clean the interior of the basin." Please provide details and/ or specifications for this process.

The intent is to remove any sludge and/or residue that remains which would interfere with the installation of new components. The Government is reponsible for the removal of the sludge.

The contractor is responsible for removing any remnants and residue. A power washed finish should suffice.

4 06/04/26 CD101 Keynote Note

Sheet CD101 Note indicates "Metal surface cleaning is delineated as sandblasting with particle containment". Per

EM 385-1- 1 (6-8.k), silica sand is not permitted as an abrasive media. Does the government have a preferred alternate abrasive media for this application?

There is no preferred alternate abrasive media.

5 06/04/26

CS101

Please confirm that the concrete structure does not receive paint or any specialty coating as part of this scope of work.

No specialty coatings are required.

6 06/04/26

ED101

Keynote 3 Keynote 3 references Sheet ES103 for KTR reference. Please provide this sheet.

Typo, should say sheet ES101.

7 06/04/26 Amend 0004

Amendment 0004 extends the bid due date. Will the PPI cutoff date be extended to allow for the delayed/rescheduled site visit?

YES, PPI DUE DATE IS EXTENDED TO TUESDAY 6/16/26

8 06/04/26 Attachment A Specs

The specification document does not contain any specifications for any of the materials, etc required by the scope of work . Please provide specifications for ALL materials, equipment, etc so pricing can be determined for specifically what is required.

Please see "ManufacturersReplacement Parts" note 1 on Sheet CS101.

9 06/04/26

Who is the manufacturer of Clarifier #2 and what are the replacement numbers of the parts being replaced? Please provide this information so we can contact them in reqards to getting the required replacement parts.

Please see PPI response #8.

10 06/04/26 CS502

please provide specifications and part numbers for materials listed on CS502 items material notes 1 thru 3

Please see PPI response #8.

11 06/04/26 CS503

please provide specifications and part numbers for materials listed on CS503 items material notes 1 thru 3

Please see PPI response #8.

12 06/04/26 ES101 Keynote 6

Keynote 6 calls for salvaged conductors to be extended to an over-current device in control panel. The section view on the same sheet depicts a box at this Keynote immediately adjacent to Clarifier #2. However, during site visit observations, an enclosure does not currently exist in this location. Is a new enclosure required in the location of KN6?

If so, please provide details and specifications.

This is a new control panel. The existing control panel interior and interior is for reference.

13 06/04/26 ES101 Keynote 5

Keynote 5 indicates that RGS conduit should be installed between the enclosure identified in KN6 and the Control

Panel Enclosure. Should this conduit route back to the existing Control Panel located at Clarifier #1? If so, please provide as-builts for the control panel and/or a sequence of operations with details for how Clarifier #2 is to be integrated into the existing control sequence. Alternatively, does this project require a dedicated Control Panel for Clarifier #2? If so, please provide details and specifications including desired operational I/O requirements.

No. See response to item #12.

14 06/04/26 G-001 General Note 1.4

General Note 1.4, please provide complete specifications for the replacement topside gear box and drive unit.

Please see PPI response #8.

15 06/09/26 Will a control panel and integration services be required for this project?

Yes

16 06/09/26 If a control panel is required, please provide the associated details and specifications.

Yes. See response to item #12.

17 06/09/26 If an integration program is required, please provide the relevant details and requirements.

No integration program is required.

18 06/09/26 Will BAA, BABA, TAA, and/or USMCA compliant materials be acceptable for this project?

Yes

19 06/09/26 ES101

Drawing ES-101 (“Keynotes”), Note 4, calls for ¾” RGS conduit. The existing conduit appears to be PVC-RGS.

Please confirm whether RGS or PVC-RGS conduit and fittings are required for this project.

RGS

Pre-Proposal Inquiry Submission Form

Solicitation #: N40085-26-R-0174

Project Title: Wastewater Treatment Plant Clarifier #2 Replacement

ResponsePPI # Date

Submitted

LEAVE

BLANK

Reference Question

20 06/09/26 E-001

Drawing E-001 (“General Notes”), Notes 7 and 12, reference requirements for work that does not appear to be included in the project scope. Please confirm whether any receptacle, switch, or lighting work is required.

There is no receptacle, switch, or lighting work required.

21 06/09/26 ED101

Drawing ES103, referenced in Keynote 3 on Drawing

ED101, was not included in the drawing package. Please provide a copy of Drawing ES103.

Typo, should say sheet ES101.

22 06/09/26

Is there a preferred method for containment of blast media?

Should the contractor plan to install a temporary structure/tent over Clarifier #2 or is wet/vacuum blasting acceptable to contain media?

Thre is no preferred method for blast media containment.

23 06/09/26 C-101

Note 4 states the contractor is responsible for cleaning the interior of the basin. Is standard pressure washing acceptable or should the contractor assume an SSPC SP-13 level of effort for cleaning of prep of existing concrete?

Please see PPI response #3.

24 06/09/26 Please confirm no coatings are required for existing concrete after cleaning.

Please see PPI response #5.

25 06/09/26

Is disassembly of select components followed by blasting and coating off-site a viable option if evaluated to be cost-effective?

Yes

26 06/09/26

Only Division 01 was provided with the project specifications. Will applicable sections of Division 26 -

Electrical and Division 46 - Water and Wastewater

Treatment Equipment be provided via amendment?

No

27 06/09/26 Please confirm that a cost-loaded schedule is required for this project.

A cost loaded schedule is required.

28 06/09/26

Please confirm the QC Manager and SSHO are unable to serve in combined role and this project requires a minimum of two oversight personnel.

They may not serve in a combined role.

29 07/01/26

Amendment 0005 PPI response to PPI #5 only confirms that no "specialty coatings" are required. The PPI also asked for clarification if any "paint" would be required for the concrete structure. Please advise.

No paint is required

30 07/01/26

Amendment 0005 PPI responses to PPI's #8,9,10 &11 does not provide all the information requested, i.e. #8 materials specifications requested (only who repaired Clarifier 1 provided), #9 Mfg of Clarifier #2 (only who repaired Clarifier

1 provided ), #10 & #11 specifications requested for parts shown on CS502 and CS503 (only referred to PPI 8 which does not provide specs) Please provide the information as requested so accurate pricing can be provided.

There will be a site visit Wednesday July 22. Please inspect existing clarfier #1 which was recently upgraded at this site visit. The intent is to replicate this work. or bidding purposes on the WWTP Clarifier 2 replacement, contractors shall base their pricing on the following specifications and materials, which match the recent Clarifier 1 repair.

Materials Specifications:

The requested material specifications for the clarifier components are as follows:

• Fasteners (Bolts, Nuts, Washers): 304 Stainless Steel (SS)

• Scum Box Assembly & Effluent Drop Box: A36 Steel (STL)

• Drive Unit Pedestal: Cast Iron (C.I.)

• Breather Vent, Backing Plate, & Seal: 304 Stainless Steel (SS)

• Rotating Scum Trough: A53 Grade B Pipe

• Dust Seal, Skimmer Wiper, & Scum Trough Seal: Neoprene (60A Durometer for the wiper/scum seal)

Manufacturer Information: The original manufacturer of the clarifier is EIMCO. The replacement drive unit basis of design is the Rebuild-it Services Group (RSG) BM12 Drive

Unit.

Specifications for Parts on CS502/CS503:

To ensure accurate pricing for the drive unit and associated controls, please utilize the following performance and system specifications:

• Drive Unit Performance: 0.1 RPM Max Rake Drive, 5,000 lb-ft Torque.

• Motor Specs: 1/2 HP, 230/460V, 3-phase motor with primary reducer.

• SCADA / Control Compatibility: The Torque Control Panel must provide a 4-20mA output for torque monitoring and include two 120 VAC output relays for high torque alarms and motor cutout.

• Paint/Coating System (Exterior): Three-part system consisting of a Prime Coat (Tnemec

Series 161 Fascure Epoxy), Intermediate Coat (Tnemec Series 161 Fascure Epoxy), and Final

Coat (U-POL Raptor Polyurethane).

31 07/01/26

Amendment 0005 PPI response to PPI #15 states yes, that both a control panel and integration services are required.

However in the PPI response to PPI #17 it states the no intergation program is required. Please confirm if the

Intergration program is required or not required.

A control panel is required - the control panels do not need to be integrated with each other.

32 07/01/26

Amendment 0005 PPI responses to PPI's #14 refers you to response #8 which does not provide any information or material specifications for the top side gear box and drive unit. Please provide the information as requested so accurate pricing can be provided.

Please see response to PPI#30

33 07/01/26 01 30 00 1.9 para 1.9 Partnering require in its entirety for the Contractor to provide a Facilitor Consultant, a meeting room and all other incidental requirements. The first full day meeting is to occur within 35 days after award and prior to start of work.

Follow on meetings are to occur every 3 to 6 months or more ofter if required. Seeing that this is such a small contract in regards to scope, magnitude and duration and 2 people

SSHO/QC and Supt are already required on the project could this requirement be waived/removed? Also the cost to carry and perform this requiredment would outweight any benefit received by it. Please advise.

Informal partnering is required. Replace Par. 1.9, Section 01 30 00 in its entirety with, 1.9

To most effectively accomplish this Contract, the Contractor and Government must form a cohesive partnership with the common goal of drawing on the strength of each organization in an effort to achieve a successful project without safety mishaps, conforming to the Contract, within budget and on schedule. The partnering team must consist of personnel from both the

Government and Contractor including project level and corporate level leadership positions.

Key Personnel from the supported command, end user, Contractor, key subcontractors and

NAVFAC are required to participate in the Partnering process.

1.9.1

Team-Led (Informal) Partnering

a. The Contracting Officer will coordinate the initial Team-Led

(Informal) Partnering Session with key personnel of the project team, including Contractor and Government personnel. The Partnering Session will be co-led by the Government Construction Manager and Contractor's

Project Manager.

b. The Initial Team-led Partnering session may be held concurrently with the Pre-Construction Post-Award Kickoff meeting. Partnering sessions will be held at a location mutually agreed to by the Contracting

Officer and the Contractor, typically at a conference room on-base or at the Contractor's temporary trailer.

c. The Partners will determine the frequency of the follow-on sessions.

e. Participants will bear their own costs for meals, lodging and transportation associated with Partnering.”

34 ED101

Section

View

Keynote #3 and #4 on ED101 both refer to and point out a dotted line that runs from the Note #2 non-fusded disconnet and the undergroun to the MCCI in control room. Is any underground removal and or replacement of any conduit or wire underground required, if so please provide all requirements and drawings? On ES101 the same run only appears to be from above ground to the non-fused disconnect. Please advise.

No.

35 07/01/26

The response to PPI 12 (dated 06/04/26) states: “This is a new control panel. The existing control panel interior is for reference.” However, the provided photos do not contain sufficient detail to support the design of a new control panel.

o Please clarify the requirements for the new control panel.

o Will submittals and/or as-built drawings for the existing control panel be made available for reference?

The new control panel shall be like the existing control panel on clarifier #1.

36 07/01/26

No control wiring or piping was observed during the site visit at Clarifier #2.

o Will control wiring be required to run from the main building and be extended to the new control panel?

No.

37 07/01/26

If control wiring is required, please provide details and requirements, including:

o Conduit pathway o Wiring specifications o Termination location within the main building

N/A

38 07/01/26

If sufficient information cannot be provided to address

Questions 7-9 (35-37) above, would an additional site visit be permitted?

o This would allow contractors to obtain detailed photos and information from the interior of the existing Clarifier #1 control panel (unit would need to be LOTO’d for a short duration).

o It would also allow for field verification and documentation of proposed conduit pathways and control wiring requirements.

o Note: Control wiring and conduit pathways were not included in the original SOW and could not be fully evaluated during the initial site visit.

Please see the response for PPI #30.

39 07/01/26

Keynote 3 on drawing ED101 requires clarification.

o Please confirm whether demolition of existing conduit is limited from the disconnect to the “LB” located at the edge of the railing/steps to Clarifier #2 only, with existing wiring retained for reuse in the new control panel (CP).

Yes.