06 26R0114 LP38 Berm PPI.pdf

N4008526R0114; N4008524D0036, N4008526F1113

PRE-PROPOSAL INQUIRY (PPI) RESPONSES # 1 – 90:

PPI # REF. QUESTION RESPONSE

1 General

Please provide the thickness of the existing concrete slab around the tank, as the contractor would like to make sure that we do not undermine the slab on grade.

Bid as noted in package. Slab around the tank is 4-inches.

2 General Please provide a soils report.

Bid as noted in package. A geotechnical exploration for this project was not performed.

Boring logs from a previous geotechnical exploration at the site are attached to the project specifications.

3 General

Please verify that the contractor is not expected to encounter contaminated soils for this project.

Bid as noted in package. There is no known soil or groundwater contamination at the site.

4 General

If the rock/soils are contaminated, please provide a hazmat report so the contractor may identify the different contaminates in the soils.

Bid as noted in package. There is no known soil or groundwater contamination at the site.

5 General

If the rock/soils that are to be removed/excavated are contaminated, please provide the parts per million of each contaminate that the contractor will encounter on the project.

This way the contractor knows how to handle the material being removed.

Bid as noted in package. There is no known soil or groundwater contamination at the site.

6 General Please provide quantities of all contaminated soils that are to be removed for this project.

Bid as noted in package. There is no known soil or groundwater contamination at the site.

7 CD100

Please provide the depth of the monitoring well that is to be removed per demolition note 12 on CD100.

Bid as noted in package. For bidding purposes follow Spec 33 51 39 paragraph 1.1.1. Actual well installed will be identical to the existing. Contractor to field verify existing after contract award.

8 CD100

Please provide the size and type of pipe feeding the valve box that will need to be capped per

This is not known. For bidding purposes, assume 12-inch ductile iron.

demolition note 12 on CD100.

9 CD100

Please provide the depth of the pipe supports that are to remain in the area where the contractor is to remove the berm per CD100 to ensure the contractor does not undermine the concrete supports.

It is expected that these pipe supports are situated on a spread footing with bottom at 2.5' below the ground surface and each footing is 7-foot square.

Existing berm construction drawings may be referenced in the Drawing & Spec Revisions 01 attachment included in this amendment.

10 G-003

Please verify that as-built drawings will be required to be signed and sealed by a professional land surveyor.

Bid as noted in package.

Requirement verified as stated.

11 General

Please verify if foreign object debris fencing will be required for this project. If so, please provide a detail and layout of the fencing required for this project.

Bid as noted in package. CD100 shown as ----SF---- (Silt Fence).

Refer to silt fence detail.

12 V-001 If a soils report is not available, please provide the water table elevation, for bidding purposes.

Bid as noted in package. A geotechnical exploration for this project was not performed.

Boring logs from a previous geotechnical exploration at the site are attached to the project specifications.

13 CS100

Please provide a detail of the concrete repairs required per keynote 6 on CS100.

Please reference the Drawing & Spec Revisions 01 attachment included in this amendment.

14 CS100

Please provide the thickness of the concrete apron that will need to be repaired per keynote 6 on

CS100.

Bid as noted in package. Slab around the tank is 4-inches.

15 CS100

As the concrete will need to be resealed per keynote 6 on CS100, please provide a specification for the sealant that will be required to be used.

Please reference the Drawing & Spec Revisions 01 attachment included in this amendment.

16 CS100

Please provide the width and depth of the void that the contractor is to fill with grout beneath the existing apron as required per keynote 10 on

CS100.

Please reference the Drawing & Spec Revisions 01 attachment included in this amendment.

17 CS100 Please provide the locations and Please reference the Drawing & sizes of the voids that the contractor will be required to fill with grout per keynote 10 on

CS100.

Spec Revisions 01 attachment included in this amendment. For bidding purposes, assume 10 cy of grout.

18 CS100

Please verify that the intent is for the contractor to fill under the entire apron slab with grout as required per keynote 10 on

CS100.

Bid as noted in package.

Verified as stated.

19 CG110

Please provide the quantities and locations of all unsuitable materials that will need to be removed from the site as required per grading note 3 on

CG110.

Please reference the Drawing & Spec Revisions 01 attachment included in this amendment. For bidding purposes, as up to 280

CY.

20 CS101

Please provide a detail of the required repairs under the tank concrete required per general note 4 on CS101.

Bid as noted in package. No repairs, just protection of the tank to remain per note 4.

21 CS100

For bidding purposes, please verify that the contractor is to assume that all existing liner is either HDPW or other thermoplastic material.

Bid as noted in package. For bidding purposes, follow UFGS 33 56 19 paragraph 3.6.

Contractor to field verify existing after contract award.

22 EC-101

For bidding purposes, please verify that the contractor will be required to provide 6" of topsoil inside the limits of disturbance but not where the new rock for the berm is to be installed as required per EPSC general note on EC-101.

Bid as noted in package.

Correct, not where the new rock is installed.

Pg. 5, Sec. 013217.00

20, Paragraph 1.9

Please verify that the designated project scheduler may also serve as the contractor's project manager as long as the project manager meets the qualifications required per section 013217.00 20 1.9.1.

Acceptable. PM's qualifications must strictly align with every requirement in section

013217.00 20 1.9.1. Please reference the Drawing & Spec Revisions 01 attachment included in this amendment.

Pg. 12, Sec. 013526, Paragraph 1.15

Please verify that this project does not require radiation exposer requirements as may be required per section 013526 1.15.

Bid as noted in package.

Pg. 6, Sec. 014500, Please verify that the QC Manager may also serve as the

Yes. QC Manager may serve as the Superintendent and/or

Paragraph 1.6.1.1 superintendent and therefore this project will require only one full-time on-site person.

SSHO. Please reference the Drawing & Spec Revisions 01 attachment included in this amendment.

Pg. 4, Sec. 015000, Paragraph 2.1.1

Please verify that a bulletin board will be required for this project.

Bid as noted in package. Yes, it is required.

Pg. 5, Sec. 015000, Paragraph 2.1.2

Please verify that the requirement for a project identification sign may be waived for this project.

Bid as noted in package. Yes, it is required.

Pg. 9, Sec. 015000, Paragraph 3.5.1

Please verify that the administrative field office can be waived for this project.

Bid as noted in package. No, use of field office is required (eq.

small 20' conex).

29 G-003 Please verify that the project field office can be waived for this project.

Bid as noted in package. No, use of field office is required

(eq. small 20' conex).

Pg. 9, Sec. 015000, Paragraph 3.5.2

Please verify that the quality contractor manager records and field office requirement may be waived for this project.

Bid as noted in package. No, QC manager is required to submit records and certificates.

Use of field office is required

(eq. small 20' conex).

31 General Please provide the location where the contractor may stockpile soils, sand, and stone.

Please reference the Drawing & Spec Revisions 01 attachment included in this amendment.

32 General Please provide limits to the height of the stockpiles, if any.

Stockpile height will be dictated by soil material. Assume 6' typical maximum height.

33 General

If the stockpile area is adjacent to the runway, please verify that the contractor will be required to provide FOD fencing around the stockpile area.

Bid as noted in package. CD100 shown as ----SF---- (Silt Fence).

Refer to silt fence detail.

34 General

If FOD fence is required, please provide a detail to ensure compliance with the requirements.

Bid as noted in package. CD100 shown as ----SF---- (Silt Fence).

Refer to silt fence detail.

Pg. 13, Sec. 015719, Paragraph 1.5.1.1.5.3.1

Please verify that the contractor site custodian may also serve as the superintendent or the QC/SSHO manager.

Acceptable, superintendent or QC/SSHO may serve as site custodian. Please reference the Drawing & Spec Revisions 01 attachment included in this amendment.

36 Pg. 11, Please verify that a SWPPP Plan No SWPPP is required for this

Sec. 015719, Paragraph 1.5.1.1.3.1 will be required for this project and will need to be developed by the general contractor.

project. Project land disturbance is less than 10,000 square feet.

DEQ does not require one.

Government expects proper management practices to prevent erosion and sediment transport at all times, regardless of the requirement for a formal plan.

Please reference the Drawing & Spec Revisions 01 attachment included in this amendment.

Pg. 16, Sec. 015719, Paragraph 1.6.4

Please verify that the environmental manager may also serve as the superintendent or the QC/SSHO manager.

Yes. The SSHO/QC Manager or Superintendent can also serve as the Environmental Manager.

Additionally, the on-site Environmental Manager is permitted to take on a dual role, provided they have company authorization and the necessary qualifications and experience.

Please reference the Drawing & Spec Revisions 01 attachment included in this amendment.

Pg. 20, Sec. 015719, Paragraph 1.7.9.1

Please provide the frequency that the contractor will be required to clean the haul route as required.

The haul route must be kept clean of dirt and debris at all times. At a minimum, any tracked sediment on public roads must be cleaned by the end of each workday. Please reference the Drawing & Spec Revisions 01 attachment included in this amendment.

Pg. 33, Sec. 015719, Paragraph 3.8

Please verify that the contractor may reuse the existing stone to rebuild the berm required.

Bid as noted in package.

Existing stone may be re-used for new berm construction.

Pg. 9, Sec. 334000, Paragraph 3.1.2

Please provide the quantities of all rock removal required for this project, for bidding purposes.

For bidding purposes, use 65 cy of rock removal.

41 C-501

Please verify that along the back slope of the berm (where it ties into existing ground), only 8" of crushed stone is required and the 6" of compacted sand fill is not required.

Bid as noted in package.

Correct, the compacted sand is for the liner.

42 V-001 Please verify that the project is Bid as noted in package.

not located inside wetlands. If it is, please provide the limits of the wetlands, for bidding purposes.

Verified, the project is not located inside wetlands.

43 CD100

Please provide a detail of the existing berm that is to be removed to access the existing liner.

Bid as noted in package. For bidding purposes, use detail C1 on sheet C-501.

44 EC-100

Please refer to VDOT 113.15.

Please note that the minimum length of the construction entrance is shown as 70'.

Drawing EC-100 only shows 56' long construction entrance.

Please verify that the contractor may utilize a 56' long construction entrance in lieu of the 70' minimum construction entrance. If not, please provide a revised drawing as the extra 14' would require more demolition of the existing liner than is shown on CD100.

Please reference the Drawing & Spec Revisions 01 attachment included in this amendment.

45 EC-100

Please note that the construction entrance will need to be moved for the installation of the new liner. Please also note that there will still be construction traffic to install the sand and stone over the liner after the liner is installed and tested. Due to this, please verify if the contractor will be required to install/relocate the construction entrance as shown on EC-100. If so, please provide the new location of the construction entrance once the liner is installed.

Please reference the Drawing & Spec Revisions 01 attachment included in this amendment.

46 EC-100

Please refer to the new security fence layout shown on EC-100.

Please note that the contractor will need a minimum of a 35' offset so that hauling equipment may turn and dump material adjacent to the berms. As shown, Please reference the Drawing & Spec Revisions 01 attachment the contractor will need to wheel barrel material from one end to the other. Due to this, please verify that the new security fence can be rerouted. The newly proposed routing should start as shown in note 2 on EC-100, run plan northwest to the edge of tower street, run along tower street, crossing at the intersection of tower street and tower street, and tie into the fence surrounding the adjacent structure. This way the contractor may have tower street as a haul route and access all required sides of the revised berm plan.

47 EC-100

If the revised fence layout mentioned above is acceptable, please verify that a vehicle gate will be required for tower street.

Yes. Per an approved layout, a gate will be added. Please reference the Drawing & Spec Revisions 01 attachment included in this amendment.

48 EC-100

If a gate is required for the new fence layout across tower street, please verify that a manual gate is acceptable.

Bid as noted in package.

Manual gate is acceptable.

49 EC-100

If a gate is required for the new fence layout across tower street and a manual gate is not acceptable, please provide a detail/drawing of the required controls for the new gate.

Please reference the Drawing & Spec Revisions 01 attachment included in this amendment.

50 EC-100

If a motorized gate is required, please provide the tie in for electrical and controls required for the new motorized gate.

Please reference the Drawing & Spec Revisions 01 attachment included in this amendment.

51 EC-100

If a new gate is required, please provide a detail and/or description of the gate.

Please reference the Drawing & Spec Revisions 01 attachment included in this amendment.

52 EC-101

Please note that the contractor needs a minimum of 30' for hauling equipment to turn and dump material adjacent to the berms. Due to this, the security fence shown on EC-101 will

Per the Government, Tower Street may not be closed.

need to cross tower street and run on at a 20' offset on the other side of tower street and tie into the fence surrounding the building to plan Northwest of the work area. Please verify that this routing of fence is acceptable. If so, please provide a revised drawing showing the revised security fence layout for EC- 101.

53 EC-101

If the revised fence layout mentioned above is acceptable along with the revised fence layout for EC-100, please verify that a vehicle gate will be required for tower street where the fence crosses tower. Please note that a gate is already proposed for access at the intersection of tower street and tower street.

See Response to #52.

54 EC-101

If a gate is required for the new fence layout across tower street, please verify that a manual gate is acceptable.

See Response to #52.

55 EC-101

If a gate is required for the new fence layout across tower street and a manual gate is not acceptable, please provide a detail/drawing of the required controls for the new gate.

See Response to #52.

56 EC-101

If a motorized gate is required, please provide the tie in for electrical and controls required for the new motorized gate.

See Response to #52.

57 EC-101

If a new gate is required, please provide a detail and/or description of the gate.

See Response to #52.

58 C-500

Please provide a detail of the reinforced footings for the fence as detail 3/S-100 does not appear in the documents.

Remove Ref. to 3/S-100. Please reference the Drawing & Spec Revisions 01 attachment included in this amendment.

59 General Please verify that the contractor will have access to the entire site from once construction starts to

The site shall remain open to government personnel for access and inspection to the tank;

when the contractor completes their work, continuously.

however, it is anticipated that such access will not impede the berm construction activities. The contractor will have full access to the site otherwise. Please reference the Drawing & Spec Revisions 01 attachment included in this amendment.

60 General

Please note that the contractor believes that the removal and replacement of the berm can be completed is less than the proposed 540 days. Please verify that the government will need to perform any work in this location, or shut the contractor down for an extended period of time for anytime during the contract time. If so, please provide the dates/number of days for all shutdowns required.

The site shall remain open to government personnel for access and inspection to the tank;

however, it is anticipated that such access will not impede the berm construction activities. The contractor will have full access to the site otherwise. Please reference the Drawing & Spec Revisions 01 attachment included in this amendment.

61 C-501

Please provide a specification for the clean soil required per the containment berm detail on C- 501.

Bid as noted. See spec. section 35 73 13 paragraph 1.2.2

62 C-501

Please verify that the soils excavated at the existing berm are considered clean soils and can be reused for the new berm.

Bid as noted in package. Soils generated at site may be used for new berm construction.

63 C-501

Please verify that the soils excavated adjacent to the existing berm are considered clean soils and can be reused for the new berm.

Bid as noted in package. Soils generated at site may be used for new berm construction.

64 C-501

Please verify that the clean soils are only for the berm sloped area under the sand as detailed in C1/C-501. If not, please provide the limits to the clean soils.

Bid as noted. See spec. section 35 73 13 part 2.

Table of Contents

There are two network analysis schedule specs. provided. 01 32

17.00 20 requires Cost Loading while 01 32 16.00 20 does not.

Which spec. will be the contract requirement?

Bid as noted in package. Cost Loading is contract requirement.

01 32 17.00 20

66 Sec. 01 20 00

If spec. section 01 32 16.00 20 is the contract requirement, please confirm that a Schedule of Prices and not an Earned Value Report will be required.

Bid as noted in package. Cost Loading is contract requirement.

01 32 17.00 20

Sec. 01 50 00, Paragraph 2.3

Please confirm that the installation of a temporary 8 ft Chain link fence with fabric mesh netting Is a contract requirement.

No temporary fence. Please reference the Drawing & Spec Revisions 01 attachment included in this amendment.

Sec. 01 57 19, Paragraph 1.3

The land disturbance for this project does not require NPDES coverage under the General Permit. Will the Government require the KTR to develop a SWPPP submittal?

No SWPPP is required for this project. Project land disturbance is less than 10,000 square feet.

DEQ does not require one.

Government expects proper management practices to prevent erosion and sediment transport at all times, regardless of the requirement for a formal plan.

Please reference the Drawing & Spec Revisions 01 attachment included in this amendment.

Please elaborate on requirements to access the site during construction. Will an escort be required for getting participants in and out of the site? If the contractor’s stockpile/storage area is located outside the existing fence, will a dedicated inspection or escort be required for each trip?

Bid as noted in package. A government escort will not be required to get participants in and out of the site.

For bidding purposes, should we assume that any excavated soil and dewatering effluent generated during replacement of ST5 is non-hazardous/non-contaminated?

Bid as noted in package. There is no known soil or groundwater contamination at the site.

Has a documented fuel release ever occurred at the site? For bidding purposes, should we assume soil material associated with existing berms is non-hazardous/non-contaminated?

Bid as noted in package. There is no know soil or groundwater contamination at the site.

If not-hazardous/non-contaminated, can soil materials

Bid as noted in package. Yes, soils generated at site may be excavated during removal of existing berms be reutilized for construction of new berms?

reused in new berm construction

CD100/

CD 101

Demolition keynote #6 on Sheets CD100 and CD101 notes that the contractor is responsible for verifying if existing storm sewer pipe is active. Is there an established criteria for determining if existing storm sewer pipe is active?

Bid as noted in package. See spec section 33 01 30.16.

Is the contractor responsible for vetting if existing 12” storm pipe in the proposed expansion area can withstand additional overburden generated by the new berms?

Bid as noted in package. Vetting existing pipe is not the responsibility of the contractor other than where CCTV is required.

Is there a minimum stand-off distance for excavating/earth moving equipment from the existing aboveground fuel lines and holding tank?

Bid as noted in package.

Sec. 35 73 13, Paragraph 2.1.2

Please confirm that all soil material not directly specified in the berm detail on C-501 must meet the requirements for Impervious Fill.

Bid as note in package. Please comply with the specifications (37 73 13 - 2.1.2)

77 CS100

Are field quality control tests referenced in construction notes on CS100 required to be completed by a third-party?

Bid as noted in package. Yes, third party testing required.

78 C-501

What does the membrane anchorage detail B1 on Sheet C- 501 apply to? Detail references applicability to Sheet CS100, but we were unable to locate a reference on this sheet.

Please reference the Drawing & Spec Revisions 01 attachment included in this amendment. Add section cu and ref on each sheet.

79 CS100

Specific to keynote #10 on Sheet CS100, is the intent to cut this joint between the existing concrete and grout void fill for the entire collar perimeter?

See Response #15-#18

CS100/

CS101

Keynote #1 on Sheets CS100 and CS101 states that existing berm volumes to be adjusted/increased to meet

Please reference the Drawing & Spec Revisions 01 attachment requirements for tank containment. Please elaborate on this requirement. Is this note specific to locations where new berms tie into existing or will volumes be increased for all existing berms. If specific to all existing berms, is quantity determination for the volume increase delegated to the contractor?

CD100/

CD101

Please clarify the proposed sequencing between temporary and permanent fencing.

Demolition keynote #11 on Sheets CD100 and CD101 states that new security fence is to be installed before existing fence demolition begins. Existing fence demolition would occur early in construction to facilitate the berm expansion. Is the intent to provide both temporary and permanent fencing for most of the project duration as shown on EC-100 and EC-101? Would temporary fencing also need to include enhanced features like barbed-wire or cable reinforcement?

Please reference the Drawing & Spec Revisions 01 attachment included in this amendment.

Sec. 33 56 19, Paragraphs

2.1.1 – 2.1.3

It appears that multiple liner types are specified (Sections 2.1.1, 2.1.2, and 2.1.3). Can you please confirm whether the intent is to install these as a layered system, or if only one of these liner types is to be selected and installed?

Bid as noted in package. See

2.1.1 Reinforced Liner.

Sec. 33 56 19, Paragraph 2.1

It appears that multiple liner types are specified (Sections 2.1.1, 2.1.2, and 2.1.3). Can you please confirm whether the intent is to install these as a layered system, or if only one of these liner types is to be selected and installed? Could a detail(s)

Bid as noted in package. 2.1.1 Reinforced Liner.

be provided?

Section 33 56 19 includes three different liners. Is the existing liner material known? If so, can this be clarified so we can quote the correct material?

Bid as noted in package. Refer to General Construction Notes- Impermeable Liner Installation, "2. EXISTING LINER TYPE

AND CONDITION ARE

UNKNOWN. EXPOSE

EXISTING LINER EDGES AT

TIE-IN LOCATIONS AND

VERIFY MATERIAL TYPE

WITH THE ENGINEER PRIOR

TO INSTALLING NEW

LINER. COORDINATE

APPROVED CONNECTION

METHOD BEFORE SEAMING

OR FASTENING."

The same spec section also included a 12oz NW Geotextile.

Are we to assume one layer of geotextile, either above or below the liner? Or should we assume 2 layers, above AND below the liner?

Bid as noted in package. Non-woven geotextile applies to French Drain Detail (c-501), applicable VDOT details, and Spring Box Detail CG501.

Provide 12 oz nonwoven geotextile as a cushioning layer beneath the liner where required by subgrade conditions.

Protective cover above the liner shall be provided by the specified sand and aggregate layers; additional geotextile above the liner is not required unless indicated.

Can the superintendent also serve as the SSHO and QCM if they are qualified to perform all 3 roles?

Yes. QC Manager may serve as the Superintendent and/or SSHO. This item is addressed in this amendment. Please reference the Drawing & Spec Revisions 01 attachment included in this amendment.

87 EC-100

Please note that the width of the berm will not allow the contractor to properly anchor the liner. Please provide a revised design that will allow the contractor to properly anchor the liner into the ground.

Bid as noted in package. The proposed anchoring detail is more robust (wider) than the existing berms anchoring detail. For means and methods contractor may widen the anchor trench and utilize the backslope of the berm as anchor ballast if needed.

88 C-501

Please note that the current slope of the berm shows a 1/1 ratio. As the berm will be constructed of sand and crushed stone, the 1/1 ratio cannot be achieved. Please provide a revised design that allows for the proper installation of the rock and sand.

1:1 on detail C1 is in error, see proposed contours on grading sheet, slope is at a 3:1. This item is address

Pg. 15, Sec. 335619, Paragraph 2.2.7

Please note that the liner is detailed to be buried under a layer of sand and crushed stone.

Please verify the location of the slip resistant walking surface will be required per section 335619 2.2.7, as the slip resistant walking surface is typically only required where the liner is exposed.

Bid as noted in package. The liner will not be exposed at any location. Slip resistance is not an issue.

Pg. 8, Sec. 335619, Paragraph 2.1.2

Please verify if the contractor is only to supply one liner that is either the non-reinforced smooth geomembrane, the non-reinforced textured geomembrane, non-woven Geotech liner, or the reinforced geomembrane liner. If the contractor is required to supply/install all three types, please provide their locations as the detail on C-501 only shows one layer and one type of liner.

Bid as noted in package.

Provide 12 oz nonwoven geotextile as a cushioning layer beneath the liner where required by subgrade conditions.

Protective cover above the liner shall be provided by the specified sand and aggregate layers; additional geotextile above the liner is not required unless indicated.