addendum no. 2 project: 600 zone water storage … no. 2 & q... · project: 600 zone water...

ADDENDUM NO. 2

PROJECT: 600 Zone Water Storage Tank

CONTRACT: WTR.00007

To: Prospective Bidders of Record

Date: May 10, 2016

The following changes, additions, revisions, and/or deletions are hereby made a part of the

Contract Documents for the aforementioned Project as fully and completely as if the same were

fully set forth therein:

A. PART 1 – BIDDING REQUIREMENTS

There are no changes to the Contract Forms in this Addendum.

B. PART 2 – CONTRACT FORMS

There are no changes to the Contract Forms in this Addendum.

C. PART 3 – CONTRACT CONDITIONS

1. Section 00800 – Supplementary Conditions

ADD: “SC-5.01 Performance, Payment, and Other Bonds

ADD the following Paragraph 5.01.D:

D. Performance bond shall remain in effect until one year after the date

when final payment becomes due or until completion of the correction

period specified in Paragraph 14.07, whichever is later. If the

correction period specified in Paragraph 14.07 is more than one year

after date of final payment becomes due, Contractor may reduce the

performance bond to five-percent of the contract value for the

remaining duration of the correction period.

D. PART 4 – SPECIFICATIONS

1. Section 01 33 00 – Submittal

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A. Paragraph 1.06.C.1.p

DELETE: “including the identification of appropriate Coastal lubricants(s); see

Maintenance Summary Forms, as specified herein.”

B. Paragraph 1.06.C.1.y

DELETE: This paragraph in its entirety.

2. Section 01 66 00 – Asset Management

A. Paragraph 1.05.C.8

REPLACE: “As a prerequisite to acceptance of Contractor’s first application for

Payment,”

WITH: “As a prerequisite to acceptance of Contractor’s second application for

Payment,”

B. Attachment to Section 01 66 00

REPLACE: The pages that are between 01 66 00-10 and 01 88 15-1

WITH: The Asset Loader Sheet included with this Addendum No. 2.

3. Section 09 97 13 – Steel Tank Coatings

A. Paragraph 1.04.A.1

REPLACE: “Painting operation shall be accomplished by skilled craftsmen and

licensed by the Commonwealth of Virginia to perform painting work.”

WITH: “Painting operation shall be accomplished by skilled craftsmen.”

4. Section 23 01 00 – Heating and Ventilation

A. Paragraph 2.13.B.3 – Accessories

INSERT: “c. Variation: Bird Screen”

5. Section 33 16 19 – Elevated Potable-Water Storage Tank

A. Paragraph 1.05.A.2.a

REPLACE: this paragraph in its entirety

WITH: “a. Show a roll-out layout for the tank showing all weld seams, and

whether the welds are to be shop, field- ground or field-in-the-air welds. These

drawings shall be used to record all radiograph locations.”

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B. Paragraph 2.03.Q

ADD: “Aluminum doors shall be a minimum of 36” x 80”.”

C. Paragraph 3.05.B

REPLACE: “The Contractor’s CWI shall be present whenever field welding is

performed.”

WITH: “The Contractor’s CWI shall visually inspect 100 percent of all welds.”

D. Paragraph 3.05.C.4.b

ADD: “Shall apply to the knuckle to bell and ball to knuckle connections.”

E. Paragraph 3.05.C.5

ADD: “Shall apply to openings in the steel platforms (1 and 2), access tube, and

cone.”

6. Section 40 27 00 – Process Piping – General

A. Paragraph 1.03.B.3

DELETE: This paragraph in its entirety.

B. Paragraph 1.04.A.2.a.1

REPLACE: “1) Radiographic (RT) or ultrasonic (UT) testing for 10 percent of

randomly selected welds, unless otherwise indicated.”

WITH: “1) Radiographic (RT) or ultrasonic (UT) testing of randomly selected

welds in accordance with AWWA C206, unless otherwise indicated. Random

welds shall be selected in coordination with the Owner and the Owner’s third

party representative.”

C. Paragraph 1.04.A.2.b

REPLACE: “b. Fillet Welds: Liquid penetrant (PT) or magnetic particle (MT)

for 10 percent of randomly selected welds, unless otherwise indicated.”

WITH: “b. Fillet Welds: Liquid penetrant (PT) or magnetic particle (MT) for

randomly selected welds in accordance with AWWA C206, unless otherwise

indicated. Random welds shall be selected in coordination with the Owner and

the Owner’s third party representative.”

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D. Paragraph 2.07.A

REPLACE: “Mark each pipe length on outside with the following:”

WITH: “Mark each pipe length on outside with a manufacturer’s PC mark or the

following:”

E. Paragraph 2.08.A

ADD: “The finish coat can be applied shop applied or field applied.”

F. Paragraph 3.14.C.1

REPLACE: “1. Be present for all field welding and shall perform inspection at

suitable intervals, before, during and after welding.”

WITH: “1. The Contractor’s CWI shall visually inspect 100 percent of all welds.”

E. PART 5 – DRAWINGS

7. Sheet C02 – General Notes and Details

A. Typical Cross Section for Proposed Access Drive Near Tank/at Red Hill Road

REPLACE: The two sectional views.

WITH: The Revised Access Road Sectional View attached to this

Addendum No. 2.

8. Sheet C06 – Overall Site Plan

REPLACE: The “matchline” section that shows the southern portion of the

construction access of this sheet

WITH: Sheet C06 Revisions attached to this Addendum No. 2

9. Sheet C07 – Site and Utility Layout Plan

A. Notes 3 & 4

DELETE: Notes “3. Epoxy coat…” & “4. Bond all…” in their entirety.

10. Sheet C09 – Utility Profiles

A. Notes 3 & 4

DELETE: Notes “3. Epoxy coat…” & “4. Bond all…” in their entirety.

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11. Sheet C09 – Utility Profiles

A. Bioretention Outlet Profile

REPLACE: “24.72’ 15” PVC @ 0.50%” call-out.

WITH: “24.72’ 15” RCP @ 0.50%” call-out.

12. Sheet 31 – HVAC

A. Sheet Keynote No. 3

DELETE: This note in its entirety

Attachments

1. Sheet C02 Revisions – Proposed Fencing and Gate Configuration

2. Revised Access Road Sectional View

3. Asset Loader Sheet

END OF ADDENDUM

Existing Fence Line Proposed 6’ Chain-link Fence (in addition to SSF)

Proposed Wire Filled Gates

ATTACHMENT NO. 1 PER ADDENDUM NO. 2

[ATTACHMENT NO. 2 INSERTED PER ADDENDUM No. 2]

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A B C D E F G H I

Tag (Level 8)Tag / Asset (Level 8)

Description Facility (Level 1-5) Process (Level 6) Process (Level 6) Description Asset Group (Level 7) Asset Group (Level 7) Description Location (Level 8) Asset Type (Level 9)

Functional Location Level 8 and SORT

field at Functional Location level 8 and

SORT field for equipment

Floc level 8 Description Functional Location Functional Location level 6 Floc level 6 Description Functional Location level 7 Floc level 7 DescriptionRoom - ONLY to be populated for

Floc level 8 and equipmentEquipment Description

T-0600 600 Zone Tank GEOE Structure TK Tank Tank

GT-0001 Manual Gate BLDG Building and Grounds BG Building & Ground Manual Gate

GT-0002 Auto-gate BLDG Building and Grounds BG Building & Ground Auto-gate

GT-M001 Gate Opener ELDT Electrical Distribution EL Electrical Auto-Opener

GEN-0001 Propane Generator ELDT Electrical Distribution EL Electrical Generator

ATS-0001 Transfer Switch ELDT Electrical Distribution EL Electrical Generator ATS

T-PS001 Propane Storage Rack BLDG Building and Grounds BG Building & Ground Propoane Storage

T-P001 Tank BLDG Building and Grounds TK Tank Propane Tank 1

T-P002 Tank BLDG Building and Grounds TK Tank Propane Tank 2

SC-0001 Camera FWST Finished Water Storage IC Instrumentation & Control Camera 1





M-0001 Roll Up Door BLDG Building and Grounds BG Building & Ground Roll Up Door

M-DM01 Roll Up Door Motor BLDG Building and Grounds EL Electrical Roll Up Door Motor

FV-0001 Valve FWST Finished Water Storage VL Valve Butterfly Valve

FV-0002 Valve FWST Finished Water Storage VL Valve Buttefly Valve

FV-0003 Valve FWST Finished Water Storage VL Valve Butterfly Valve

CV-0001 Valve FWST Finished Water Storage VL Valve Check Valve

LCV-0001 Valve FWST Finished Water Storage VL Control Valve Altatude Valve

MIX-0001 Mixer FWST Finished Water Storage EL Electrical PAX Mixer

FE-0001 Flow Meter FWST Finished Water Storage IC Instrumentation and Control Flow Meter

CL-0001 CL2 Analyzer DINF Disinfection IC Instrumentation and Control Chlorine Analyzer

PE-0001 Pressure Sensor FWST Finished Water Storage IC Instrumentation and Control Pressure Sensor

PE-0002 Pressure Sensor FWST Finished Water Storage IC Instrumentation and Control Pressure Sensor

TE-0001 Temperture Sensor FWST Finished Water Storage IC Instrumentation and Control Temperture Sensor

LP-0001 Light Panel Electrical Panel Board

EFP-0001 Exhaust fan starter BLDG Building and Grounds HV HVAC Exaust Fan Motor Starter

CP-RTU1 RTU Panel BLDG Building and Grounds EL Electrical RTU Panel

AD-CON1 Alarm Panel BLDG Building and Grounds EL Electrical Security Station

CP-0002 Main Breaker Panel EL Electrical Circuit Breaker Panel

CP-0001 Control Panel FWST Finished Water Storage Electrical PAX Mixer Control Station

CATH-0001 Cathodic Protection FWST Finished Water Storage IC Instrumentation and Control Cathodic Protection

EF-0001 Exaust Fan BLDG Building and Grounds HV HVAC Exaust Fan

EUH-0001 Heater BLDG Building and Grounds HV HVAC Unit Heater 1



DEH-0001 Dehumidifier BLDG Building and Grounds HV HVAC Dehumidifier

TH-0001 Thermostat BLDG Building and Grounds HV HVAC Unit Heater Thermostat

BD-PIPE GEOE Piping and Appurtences Pressure Main Process Pipe

Access Card Reader BLDG Building and Grounds IC Instrumentation and Control Access Card Reader


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J K L M N O P Q R S T U


Description Cost Center WBS Mfg Model Serial#

Weight of

objectUnit of weight Size Purchase Price Purchase Date




Floc level 8 Description

Cost center to be

populated for Floc

level 6, 7, 8 and

equipment

WBS to be populated for

Floc level 6, 7, 8 and

equipment

ONLY for EquipmentONLY for

Equipment

ONLY for

Equipment

ONLY for

Equipment

ONLY for

Equipment

Size - ONLY to be

populated for Floc

level 8 and equipment

Acquisition value - ONLY

for Equipment

Acquisition date - ONLY for

Equipment

T-0600 600 Zone Tank

GT-0001 Manual Gate

GT-0002 Auto-gate

GT-M001 Gate Opener

GEN-0001 Propane Generator

ATS-0001 Transfer Switch

T-PS001 Propane Storage Rack

T-P001 Tank

T-P002 Tank

SC-0001 Camera

SC-0002 Camera

SC-0003 Camera

SC-0004 Camera

SC-0005 Camera

M-0001 Roll Up Door

M-DM01 Roll Up Door Motor

FV-0001 Valve

FV-0002 Valve

FV-0003 Valve

CV-0001 Valve

LCV-0001 Valve

MIX-0001 Mixer

FE-0001 Flow Meter

CL-0001 CL2 Analyzer

PE-0001 Pressure Sensor


TE-0001 Temperture Sensor

LP-0001 Light Panel

EFP-0001 Exhaust fan starter

CP-RTU1 RTU Panel

AD-CON1 Alarm Panel

CP-0002 Main Breaker Panel

CP-0001 Control Panel

CATH-0001 Cathodic Protection

EF-0001 Exaust Fan

EUH-0001 Heater

EUH-0002 Heater

EUH-0003 Heater

DEH-0001 Dehumidifier

TH-0001 Thermostat

BD-PIPE

Access Card Reader


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V W X Y Z AA AB AC AD AE AF AG


Description Date Installed Cat Profile OBJ Type Planner Work Center Class Characteristic 1 Characteristic value 1 Characteristic 2 Characteristic value 2




Floc level 8 DescriptionStart-up date - ONLY for

equipment

Floc level 8 and

equipment

Floc level 8 and

equipment

Floc level 8 and

equipment

Floc level 8 and

equipment

Floc level 8 and

equipment

Floc level 8 and

equipmentFloc level 8 and equipment Floc level 8 and equipment Floc level 8 and equipment


GT-0001 Manual Gate

GT-0002 Auto-gate

GT-M001 Gate Opener




T-P001 Tank

T-P002 Tank

SC-0001 Camera

SC-0002 Camera

SC-0003 Camera

SC-0004 Camera

SC-0005 Camera

M-0001 Roll Up Door


FV-0001 Valve

FV-0002 Valve

FV-0003 Valve

CV-0001 Valve

LCV-0001 Valve

MIX-0001 Mixer

FE-0001 Flow Meter





LP-0001 Light Panel


CP-RTU1 RTU Panel

AD-CON1 Alarm Panel




EF-0001 Exaust Fan

EUH-0001 Heater

EUH-0002 Heater

EUH-0003 Heater


TH-0001 Thermostat

BD-PIPE

Access Card Reader


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AH AI AJ AK AL AM AN AO


Description Characteristic 3 Characteristic value 3 Characteristic 4 Characteristic value 4 Characteristic 5 Characteristic value 5




Floc level 8 Description Floc level 8 and equipment Floc level 8 and equipment Floc level 8 and equipment Floc level 8 and equipment Floc level 8 and equipment Floc level 8 and equipment


GT-0001 Manual Gate

GT-0002 Auto-gate

GT-M001 Gate Opener




T-P001 Tank

T-P002 Tank

SC-0001 Camera

SC-0002 Camera

SC-0003 Camera

SC-0004 Camera

SC-0005 Camera

M-0001 Roll Up Door


FV-0001 Valve

FV-0002 Valve

FV-0003 Valve

CV-0001 Valve

LCV-0001 Valve

MIX-0001 Mixer

FE-0001 Flow Meter





LP-0001 Light Panel


CP-RTU1 RTU Panel

AD-CON1 Alarm Panel




EF-0001 Exaust Fan

EUH-0001 Heater

EUH-0002 Heater

EUH-0003 Heater


TH-0001 Thermostat

BD-PIPE

Access Card Reader


Spare Parts List Template

Project ID#_______________

Item Description Manufacturer Manufacturer Part # Vendor Vendor Part# Cost

Recommended QTY From Miant. Manual

Project Name_______________________


WRITTEN QUESTIONS AND ANSWERS (GROUP 2 OF 2)

PROJECT: 600 Zone Water Storage Tank

CONTRACT: WTR.00007

To: Prospective Bidders of Record

Date: May 10, 2016

The questions listed below are those that have been received via email at

[email protected] requesting clarifications to the Bidding Documents. The

corresponding answers are for information only and do not change the Bidding Documents for

the aforementioned Project. See addenda for any changes to the Bidding Documents associated

with these questions and answers.

Q1. Please advice if the farm owner will have any requirements related to his

livestock/horses. I.e. will that pasture still be active as we build the new access road?

During its use? If so, I assume gate(s) will have to be installed at the property line (cul-

de-sac) as well as the picket fence line near the house. Will any special "cross-overs"

have to be built for the horses to transverse over the gravel access road, from the pasture

to the stables (i.e. any concern of gravel rock size vs hooves?). Any need to 'fence off'

the road as it passes thru the pasture?

A1. See changes to the Bidding Documents per Addendum No. 2. A new

proposed fence and gate configuration has been added to the Contract,

Bidder is responsible for implementing these proposed changes.

Q2. Has the slope/grade of the planned access road been determined to be acceptable to

heavily loaded concrete trucks and/or the watermain contractor's equipment?

A2. No changes will be made to the Bidding Documents in reference to this

item. However, the section of the access road where the slope is greater than

10% may be widened to help minimize the challenges associated with the

grade.

Q3. The Tank Painting Spec 09-97-13 page 4 request a five (5) year warranty. This is

greatly in excess of the norm, which is one year. As we have no control over how the

County will operate the tank during that period (i.e. CP system, chlorine concentrations,

etc.) please consider reducing this duration considerably, otherwise we will have to

include contingency monies (perhaps as large as the value of a complete repaint) in our

Base Bid price.

mailto:[email protected]

2 of 7

A3. See changes to the Bidding Documents per Addendum No. 2. No change to

the referenced specification has been made, instead the changes can be

found within the Supplementary Conditions.

Q4. I did not see any mention (or format) for a Maintenance Bond. If a formal Maintenance

Bond is required, most Sureties will charge in excess of $ 50,000 for that longer than

usual 5 year warranty period (at a minimum).

A4. Per the Contract Documents, the Performance Bond covers the entire

warranty period.

Q5. We also see that your General Terms (Article 5.01) state that the Performance Bond is

to also remain in effect for that same time 5 year period. Does Loudoun Water typically

hold Performance Bond(s) instead for warranty issues/purposes, in lieu of a formal

Maintenance Bond? Either way, issuance of any Bond(s) over the industry's traditional

one year period will increase the base cost of the tank (in addition to the addition of

'contingency funds' referenced below). So again, please review / reconsider the length

of the Special Guarantee period. It is our opinion that if the tank's paint is going to fail,

it will usually happen in the first year.

A5. Per the General Conditions, Performance Bonds shall remain in effect until

one year after the date when final payment becomes due or until completion

of the correction period specified in Part 14.07 of the General Conditions.

See changes made to the Bidding Documents (Supplementary Conditions)

per Addendum No. 2 regarding the Performance Bond.

Q6. Lastly, and regardless of the final warranty period, what is the criteria for the

determination of a warranty claim? I.e. how much of a paint failure should we assume

will cause Loudoun Water to invoke the Repair requirements stated in Coatings' Spec

09-97-13 item 2.03? I.e. to require us to re-mobilize a paint crew, drain the tank, etc.?

A qualitative reply (such as "one percent (1%) of the tank's surface area") would be

appreciated here, so that we can evaluate the risks and price it accordingly).

A6. Warranty claims would be evaluated on a case by case basis, depending on

the nature of the defect.

Q7. What permits will the Contractor need to obtain for this project? What is their cost?

Any other licenses or fees that the Contractor must pay for?

A7. Owner has obtained or will obtain all permits listed within Section 00800,

Part SC-6.08. Contractor is responsible for any other permit(s) that are

required to perform the Work and not otherwise included within the

Contract Documents.

Q8. Is there any 3rd party inspection (I.e. TIC, KLM, AEC etc.) on engineering construction

or painting? If so, who will it be and on what portion of work? (Footnote - rumor is that

designer CH2M is not going to be the CM, but that Hazen Sawyer will be? Full time

onsite?)

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A8. Any third party inspection services will be provided as part of the Owners

construction administration contract with the Engineer. The Owner intends

to use Hazen and Sawyer for those services although this contract has yet to

be approved.

Q9. Section 40 27 00-5, Part 1.04.A - Item requires RT, UT, PT or MT of 10% of pipe

welds. Exceeds AWWA and will add cost to project

A9. See changes to the Bidding Documents per Addendum No. 2.

Q10. Section 40 27 00-4, Part 1.03.A.2.a - Item requires Mill certificates for fittings and

piping - those usually just come with "Certified Test Report" (CTR's) - is that

acceptable?

A10. Yes, Owner will accept a CTR for this submittal.

Q11. Section 40 27 00-4, Part 1.03.B 1 to 6 - Informational Submittals- calls for (1) Mill

Certs for fitting and bolts and (2-6) more data than standard "Certified Test Report"

(CTR's). Potential for higher supplier costs if CTR's are not enough.


Q12. Section 40 27 00-5, Part 1.05.A - Item requires flange protectors - necessary?

A12. Bidders shall meet all requirements that are called out within the Contract

Documents.

Q13. Section 40 27 00-8, Part 2.07.A - Specs instructs us to mark each pipe length with its

diameter and class, manufacturers I.D. and serial number, location number and date of

manufacture and code markings. Our standard is a PC Mark only, which refers back to

this data elsewhere. Please consider deleting to save costs.


Q14. Section 40 27 00-8, Part 2.08 - Item calls for prime and finish coats (on piping) in the

shop. We normally blast and prime in the shop, and then finish coat in the field - OK?


Q15. Section 40 27 00-17, Part 3.14 - Calls for "Certified Welding Inspector (CWI) to be

present onsite for all field welding (i.e. the entire job). This is not typical and will add

cost if enforced.


Q16. Section 33 16 19-5, Part 1.05.B.2.a - Spec requires a Welding Data (Shop & Field)

Weld Map with weld reference called out and to have WPS and NDE numbers in the

tail of welding symbols. This is excessive and will add $$ to estimate

4 of 7


Q17. Section 33 16 19-5, Part 1.05.B.3.d - Do we need Charpy V-notch test for the shell

plates or just for the WPS's??

A17. Charpy V-notch specimens shall be taken from the weld metal and from the

heat-affected zone of the WPS qualification test plates or from duplicate

test plates.

Q18. Section 33 16 19-8, Part 2.2.A - Calls for "Certified Welding Inspector (CWI) to be

present for all shop welding. Available if required.

A18. The CWI does not need to be onsite for all shop welding, however, they do

need to visually inspect 100% of the welds (during or after the weld is

made), as called for in Part 2.02. Inspection shall be provided at suitable

intervals, as called for in the Contract Documents. See changes to the

Bidding Documents per Addendum No. 2.

Q19. Section 33 16 19-9, Part 2.3.C - Item calls for anchor bolts as A193 with A194-2H

(Heavy) nuts. We will Use A36 for anchor bolts with A307 heavy hex nuts

A19. Refer to Addendum No. 1, Section D Part 4 – Specification – Item No. 5.G.

Q20. Section 33 16 19-11, Part 2.3.O - Mentions a Condensate Pan - that terminology is from

a CET spec as a WSO's shaft platform is the condensate ceiling (with drain to

overflow). FYI Only

A20. Information noted.

Q21. Section 33 16 19-11, Part 2.03.Q - What is the size of the Personnel Door (aluminum

door and frame). WSD standard door is 36" x 84' and mfgd of steel plate

A21. See changes to the Bidding Documents per Addendum No. 2. A 36” x 84”

door would be acceptable.

Q22. Section 33 16 19-11, Part 2.3.L - Requires a painters rail on underside of roof whereas

our standard is painters couplings only - Please advise.

A22. Painters’ rail shall be provided, and assumed for bidding purposes, as

required by the Contract Documents. Contractor may submit alternative

for Owner and Engineer review and approval during construction.

Q23. Section 33 16 19-14, Part 3.05.B - Calls for "Certified Welding Inspector (CWI) to be

present for all field welding. See above also.


5 of 7

Q24. Section 33 16 19-14, Part 3.05.C - Inspection requirements are in excess of AWWA -

i.e. (C.3) Roof MT or PT @ 10%, (4.b) shell to floor (is this ball to knuckle?) @ 100%

MT or PT, (C.5) floor opening (is this access tube & man hole in cone?) 100% MT or

PT, (C.6) Accessories & attachments 10% MT.

A24. Testing shall be provided as required by the Contract Document. Testing is

being required to provide coverage for welds that specifically excluded

under Section 11.4.1.2 of AWWA D100. See changes to the Bidding

Documents per Addendum No. 2.

Q25. Section 09 97 13-4, Part 1.06 - Paint warranty is listed as 5 years - see previously

submitted request to reduce duration

A25. See responses to questions 3 through 5 of this Q&A list.

Q26. Drawing Sheet 30 - Drawing shows roof handrail layout as only 12' in diameter - circle

instead needs to be 20'ø minimum in order to fit vent, mh, and large 60"ø access tube

inside it. Confirm also that handrail is to be first galvanized and then painted (extra

cost)

A26. Per General Sheet Note 5 on Sheet 30, actual tank dimension may vary,

which shall impact diameter of the roof handrail layout. Regarding

painting of galvanized steel, see changes made in Addendum No. 1.

Q27. Drawing Sheet 31 - Drawing shows a Louver in the vestibule - what is the material or

manufacturer and model number

A27. Contractor shall install a backdraft damper, as shown in the Contract

Documents, and in accordance with Section 23 01 00, Part 2.13. No louver

shall be installed. See the changes to the Bidding Documents as per

Addendum No. 2.

Q28. Regarding the PAX mixer - Standard detail is to run cable up access tube (above TCL)

and into tank with a coupling. Details show cable through the roof with a junction box

(by PAX) and a NEMA 4 enclosure. The NEMA enclosure will cost more so can we

use our details instead?


Documents.

Q29. Drawing Sheet 30 calls for 4"ø condensate drain (run over to overflow) - industry

standard is a more economical 2"ø


Documents.

Q30. There appears to be a 12” valve at tie-in point at Stone School Lane? Can you confirm

whether this is a gate or butterfly valve?

6 of 7

A30. See Watermain-A Profile on Sheet C09 for the fitting sequence. Per

Loudoun Water’s Engineering Design Manual (Appendix G – Approved

Materials List, Section 3) all valves 12” and below shall be gate valves, and

valves 16” and above shall be butterfly valves.

Q31. Detail W-2 on Sheet C-04 calls for 2” threaded ductile iron pipe. This is not readily

available. Can we provide galvanized or SS pipe instead?


Documents.

Q32. Per note 4 on drawing C07, the plans call for all joints to be bonded per LW standard

details. Are there any anodes or test stations required for the buried water main?


Q33. Bio-retention Outlet on C07 calls for 24.72’ of RCP but the Profile on C09 calls for

PVC. Please confirm outlet piping material.


Q34. Road Cross Sections on C02 do not show thickness of stone required. Please clarify.


Q35. Drawing C13 seems to want permanent seeding over the entire site. Are we required to

make lawn for the entire field? Is the intent to mow this routinely as a lawn or more

like a pasture? And how long are we responsible for watering/maintaining it?

A35. Per the Erosion and Sediment Control Narrative in Sheet C14, all areas

disturbed by construction shall be stabilized with permanent seeding

immediately after finish grading. Per Note 14 of Sheet C22, maintenance

shall begin immediately after each plant and lawn area is installed and shall

continue until 90 days after final acceptance of the last section.

Q36. Section 09 97 13-3, Part 1.04.A.1 - states "Painting operations shall be accomplished by

skilled craftsmen and licensed by the Commonwealth of Virginia to perform painting

work". While we are a "Class A" general contractor in the State of VA, we are not

familiar with the need for any other / special "painters license". Please provide details

and/or confirm need.


Q37. Now that the tank's overhead truck door size was reduced in size down to 10' x 10', does

the "vestibule" shown on the dwgs still need to be 14' wide or can that be reduced as

well? We recently designed a tank that had a 10 x 10 OH door which we then put into

a 12'-8" wide vestibule (with a std 36" x 80" personnel door on the side) and the

customer seemed to like that. Please advise this would be acceptable.

7 of 7

A37. A 12’-8” wide vestibule would be acceptable.

Q38. Section 01-66-00 Asset Management - this seems to require excessive tool tracking

efforts. Please consider deleting this section as we are not working within an operating

Loudoun 'plant' where tracking small tools like this might be more important.

A38. This Asset Management section will remain. See changes to the Bidding

Documents per Addendum No. 2, for clarifications on the requirements of

this section.

Q39. Section 01-32-00 Schedule - similarly, this section seems more set up for a complex

pump station or WWTP project. Please advise whether we can ignore this section, and

provide more simplistic / standard bar charts, since there are not many phases to this

project?


Documents.

Q40. SC 6.02 states we are to pay $ 100/hr for all Loudoun inspection work outside of

normal M-F working hours. If weekend work periods are pre-scheduled with

Engineer/Inspector (such as when good weather / weekend periods are forecast during

the painting phase) would the overtime fee still be charged?

A40. Pre-scheduled work shall still meet the requirements that are stated in the

Contract Documents.

END OF Q&As