Amendment No. 0004 W912P620B0026 IHC CDF Dike Expansion.pdf

W81G6693037733

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15A. NAME AND TITLE OF SIGNER (Type or print)

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

STANDARD FORM 30 (Rev. 10-83) Prescribed by GSA

FAR (48 CFR) 53.243

REFERENCE: INVITATION FOR BIDS NO. W912P620B0026, "INDIANA HARBOR AND CANALCONFINED DISPOSAL FACILITY DIKE

EXPANSION, EAST CHICAGO, INDIANA"

A. The Bid Opening Date and Time is EXTENDED by this Amendment. The response due date and time is EXTENDED to September 10, 2020 at 3:00 p.m. (CDT). Therefore, bids shall be submitted PRIOR to 3:00 p.m. (CDT) on September 10, 2020 to be considered timely submitted.

Detailed information regarding the submission of bids is located at Section 00 22 13 of the Solicitation document – See “IMPORTANT BID NOTES.”

-- THIS AMENDMENT CONTINUES ON THE NEXT PAGES --

1. CONTRACT ID CODE PAGE OF PAGES

1 5

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

16C. DATE SIGNED

BY 01-Sep-2020

16B. UNITED STATES OF AMERICA15C. DATE SIGNED15B. CONTRACTOR/OFFEROR

(Signature of Contracting Officer)(Signature of person authorized to sign)

8. NAME AND ADDRESS OF CONTRACTOR (No., Street , County, State and Zip Code) X W912P620B0026

X 9B. DATED (SEE ITEM 11)

03-Aug-2020

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

X The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offer X is extended, is not extended.

Offer must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended by one of the following methods:

(a) By completing Items 8 and 15, and returning 1 copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN

REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE

CONTRACT ORDER NO. IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(B).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

E. IMPORTANT: Contractor is not, is required to sign this document and return copies to the issuing office.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

01-Sep-2020

CODE

U.S. ARMY ENGINEER DISTRICT, CHICAGO

231 SOUTH LASALLE STREET SUITE 1500

CHICAGO IL 60604-1437

W912P6 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912P620B0026

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

The following items are applicable to this modification:

SUMMARY OF CHANGES

B. AMENDED SPECIFICATION SECTIONS: The following Specification Sections have been revised. The revised sections are enclosed hereunder and replace the previously furnished sections.

a. 03 00 00 Earthwork – All tables deleted, except table 2

b. 03 00 00 Earthwork – Fill requriement added

c. 01 52 02 Temp – Requirements about site access were added

C. REVISED DRAWING SHEET: The following Drawing Sheet have been revised and is hereunder enclosed replacing the previously furnished respective sheet.

C-101: Note 4 revised

D. CONTRACTOR’S INQUIRIES: By this Amendment, the Chicago Distict, USACE responds to Contractor’s inquiries as follows:

INQUIRY #1: Decant structure, the spec is only specifying the Epoxy. If you look at the drawings they are pointing to the verticals as Epoxy. Are only the verticals Epoxy and the Horizontals and all other rebar is Plain. Doesn’t make sense.

USACE RESPONSE INQUIRY #1: Please review the spec section 03 30 00 paragraph 2.4 that described the two-part epoxy grout for concrete dowels (vertical reinforcement), and paragraph 2.6.1.1 that specified the epoxy-coated for the reinforcement as indicated in the plans (vertical/dowels reinforcement). Specifically, the epoxy is intended only for the embedment length of the dowels, no need epoxy for other reinforcement.

INQUIRY #2: For crane access to remove and install the bridge, Will we be able to set our crane up on top of the Dike or at the lower area?

USACE RESPONSE INQUIRY #2: Yes, you will be able to set the crane up on top of the dike with taken into consideration that the maximum crane loading on the dike crest cannot exceed the load that already indicated in Spec Sec 31 00 00 Par. 3.4.

INQUIRY #3: Specification 30 00 00 Earthwork – Paragraph 2.2.1 Environmental Testing of Borrow Materials references Table 2 attached at the end of the section. At the end of the section are three tables that all have the same parameters for environmental testing of the fill material. Two of them are labeled Table 1 and one is labeled Table 2.

Are the correct parameters just the ones listed on one page, or are there others that should be included?

USACE RESPONSE INQUIRY #3: The correct parameters for environmental testing of borrow materials are on Table 2. Please disregard the two Tables 1 at the end of Specification 30 00 00, as they include the same information as Table 2, correction will be made, two Tables 1 will be deleted. Table 2 should be used.

INQUIRY #4: Specification 30 00 00 Earthwork – Please clarify the maximum stone size allowable for satisfactory mill materials. Paragraph 1.2.2 Satisfactory Fill Materials indicated a maximum stone size of 3 inches in any direction and Paragraph 2.1.1.2 Satisfactory Fill, references a maximum stone size of 4 inches in any dimension.

USACE RESPONSE INQUIRY #4: Section 31 00 00 has been revised, in the definitions of satisfactory fill and unsatisfactory fill. 1.2.2 and 1.2.5 in response to the RFI.

INQUIRY #5: With consideration to the coordination of entrances with the facility manager, is the contractor going to have to have security at the Alternative Entrance during work hours or will we be allowed to keep the gate open during work hours and then close it upon leaving daily?

USACE RESPONSE INQUIRY #5: Specs section 01 52 02, paragraph 3.2.4 was revised to say: ”For ease of construction and traffic flow, the Contractor may leave the north and/or south gate open during their work hours. It is the responsibility of the Contractor to close them at the end of their work day. If the gates are left open without the cause of the Contractor, it will be their responsibility to close them if they are the last person onsite. Coordination with other Contractors onsite may be required. Manned security at these locations is not required.”

INQUIRY #6: Can you verify if they want centrifugal submersible pumps or submersible axial type pumps used for storm water. The spec states Axial type but the drawings show centrifugal submersibles.

USACE RESPONSE INQUIRY #6: Per Section 35 45 02.00 10, paragraph 1.1 SUMMARY Design, furnish, and install four submersible non-clog wastewater identical pumping units for the both Lift Station 1 (LS1) and Lift Station 2 (LS2) shown. Each pump shall be equipped with a 10 HP submersible electric motor connected for operation on 460 volts, three phase, 60 hertz, wire service, with an adequate length of submersible cable suitable for submersible pump applications. The power cable shall be sized according to NEC and ICEA standards and have P-MSHA Approval.

INQUIRY #7: Are new control panels required? Drawing shows the use of existing control panels.

USACE RESPONSE INQUIRY #7: On sheet ES-101, note 3 states "Remove electrical equipment, store and install on AMS pad after raising of dike."

On sheet E-501, note 2 states "Existing AMSs to be relocated are to be removed, maintained, and reinstalled by the contractor. Contractor is responsible for storing and securing this equipment for the duration of construction until reinstallation"

INQUIRY #8: Drawing of lift station does not indicate the grade level so I do not know how deep each wet well is to provide the correct amount of guide rail pipe. Can you provide the depth of each wet well?

USACE RESPONSE INQUIRY #8: Per sheer M-302, the topsoil elevation is at 592. The top of the LS's is approximately at the same elevation.

INQUIRY #9: Is there a specific Bid Guarantee Form that USACE requires? I have searched through the project specifications and checked the solicitation documents and do not see a specific Bid Guarantee Form. I do see that other government projects have had an SF-24 form.

USACE RESPONSE INQUIRY #9: The bidder shall use Standard Form 24 (per the Federal Acquisition Regulation, Subpart 28-106-1(a) " Bonds and bond-related forms”). Bidders may obtain a copy by visiting:

https://www.gsa.gov/forms-library/bid-bond (the current version is 08/2016).

INQUIRY #10: Does USACE accept electronic bid bonds? Since this is a hard copy bid, I don’t think so but I told the agent that I would ask.

USACE RESPONSE INQUIRY #10: An electronically submitted bid bond is acceptable and has been authorized via Amendment No. 0003, which has added "emailed Bids" as an option to placing bids.

INQUIRY #11: Is the required fill material needed to construct the exterior ramps included in the Clay Fill / Satisfactory Fill unit quantities or is the required fill incidental to - 0001AG exterior ramp lump sum price?

USACE RESPONSE INQUIRY #11:

SPECIFICATION SECTION 01 22 00.00 10 Page 7 RTA - 08/03/20 States:

1.1.7 Exterior Ramp (Northwest Corner) (Base Work Bid Item 0001AG and Option Work Bid Item 0002AJ)

1.1.7.1 Payment

Payment shall be made at the contract Job price for installation of exterior ramp to the Base Work crest elevation as shown on drawings and as outlined in Section 32 15 00 AGGREGATE SURFACING.

Payment shall be made at the contract Job price for installation of exterior ramp for height increase between Base Work crest elevation and the Option Work crest elevation, as shown on drawings and outlined in Section 32 15 00 AGGREGATE SURFACING.

Payment constitutes full compensation for installation of exterior ramp and will include cost associated with labor, materials, equipment, and all other incidentals necessary to complete the work.

SPECIFICATION SECTION 01 22 00.00 10 Page 13 RTA - 08/03/20 States:

1.1.27 Exterior Ramp with Designated Emergency Overtopping Location (Southwest Corner) (Option Work Bid Item 0002AL)

1.1.27.1 Payment

Payment shall be made at the contract Job price for installation of exterior southwest ramp with Designated Emergency Overtopping Location as shown on drawings and as outlined in Section 32 15 00 AGGREGATE SURFACING. Payment constitutes full compensation for installation exterior ramp with spillway and will include cost associated with labor, materials, equipment, and all other incidentals necessary to complete the work

INQUIRY #12: The perforated pipe for the tar collection trench – how many rows are there in the perforation on pattern and is it staggered? How long is the J-Bend?

USACE RESPONSE INQUIRY #12: The purpose of the perforated pipe is to collect soil gas so it can be passively vented at the surface. The perforations are required to conform with the requirements in Specification Section 33 46 13 Subpart 2.1.2. The J bend has no length requirement and the opening simply needs to face downwards to prevent precipitation from entering.

INQUIRY #13: Due to the size and complexity of this project we would request a 14 day extension of the bid date.

USACE RESPONSE INQUIRY #13: By this Amendment, the bid opening date and time has changed. Please See Page 1 of this document.

INQUIRY #14: I have noticed several other ACOE bids out for bids and they have by addendum added electronic submission via email is allowed. Addendum #2 of this project states electronic bids are not allowed.

USACE RESPONSE INQUIRY #14: Please see Inquiry #10 of this Amendment No. 0004.

INQUIRY #15: We have been getting feedback from subcontractors and suppliers and due to COVID-19 there are issues getting pricing in time to meet the September 3, 2020 bid date. We have witnessed and experienced these COVID-19 delays ourselves and understand the challenges this pandemic has created across many industries. We would like to request at least a one week time extension for the bid due date.

USACE RESPONSE INQUIRY #16: By this Amendment, the bid opening date and time has changed. Please See Page 1 of this document.

INQUIRY #16: Do you anticipate that the Bid Date for W912P620B0026 will remain 9/3/2020 at 2PM or possibly be extended?

USACE REPONSE INQUIRY #16: By this Amendment, the bid opening date and time has changed. Please See Page 1 of this document.

E. POINT OF CONTACT: The Point of Contact (POC) for this Amendment is Ericka Hillard at (312) 846- 5378; email: ericka.d.hillard@usace.army.mil.

END OF AMENDMENT NO. 0004

(The aforementioned Specification Sections and Drawing Sheet follows)

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LOCATION

OVER TOPPING

DESIGNATED

EXISTING BUILDINGS

CRANE PAD

EXISTING

EXISTING SLURRY/CUTOFF WALLAND STORAGE AREA

PROPOSED STAGING

EXISTING MAIN ENTRANCE

(SEE NOTES 1 & 2)

EXISTING AIR MONITORING PAD

(SEE NOTES 1 & 2)

EXISTING AIR MONITORING PAD

(SEE NOTES 1 & 2)

EXISTING AIR MONITORING PAD

(SEE NOTES 1 & 2)

EXISTING AIR MONITORING PAD

(SEE NOTES 1 & 2)

EXISTING AIR MONITORING PAD

PROPOSED STAGING AND STORAGE

PROPOSED STAGING AND STORAGE

(OPTION 2)

NEW TURNAROUND

TO REMAIN

INTERIOR DIKE

EXISTING

(BASE SCOPE)

NEW RAMP LOCATION

(OPTION 2)

LOCATION

NEW RAMP

TAR SEEP AREA

PROPOSED STAGING AND STORAGE

REMAIN)

GOVERNMENT SOIL STOCKPILE (TO

APPROXIMATE LOCATION OF

(SEE NOTE 4)

EXISTING WASTEWATER TREATMENT PAD LOCATION

DREDGING IN FALL 2021.

REMOVED UPON COMPLETION OF

PLANT, AND CENTER DIKE TO BE

BETWEEN CANAL, TREATMENT

EXISTION TEMPORARY PIPES

APPROXIMATE LOCATION OF

(SEE NOTE 5)

ALTERNATIVE ENTRANCE

(OPTION 2)

TO BE MODIFIED

DECANT STRUCTURE AND BRIDGE

DECANT STRUCTURE AND BRIDGE TO REMAIN

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NO. NORTHING EASTING

POINT COORDINATES

WORK LIMITS

2,844,057.412,332,305.37WL11

2,844,056.802,333,540.81WL10

2,844,037.742,333,762.13WL09

2,844,001.962,333,896.02WL08

2,843,366.832,334,306.74WL07

2,842,689.412,334,614.39WL06

2,841,952.802,334,718.99WL05

2,841,942.502,332,853.70WL04

2,841,933.032,331,011.42WL03

2,842,943.202,330,992.74WL02

2,844,052.282,330,969.98WL01

B1

SCALE: 1" = 200' 400'0 200'

NORTH

PLAN

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SITE PLAN

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GENERAL NOTES

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INSTALLATION.

TEMPORARY AIR MONITORING PADS WILL BE DETERMINED BY OTHER DURING

FOOTPRINT DURING DIKE CONSTRUCTION. FINAL LOCATION OF THE

NORTHEAST AND SOUTHEAST CORNERS OF THE SITE OUTSIDE OF THE DIKE

TEMPORARY AIR MONITORING PADS WILL BE INSTALLED BY OTHERS IN THE 6.

MANAGER.

CONTRACTOR MUST COORDINATE ENTRANCE TO THE SITE WITH THE FACILITY 5.

BETWEEN ALL ON SITE CONTRACTORS.

WATER TREATMENT SCHEDULE AND NEEDS. COORDINATION IS REQUIRED

FOR USE BY THE DIKE CONSTRUCTION CONTRACTOR DEPENDING ON THE

USING THIS AREA. HOWEVER, PART OR ALL OF THIS AREA MAY BE AVAILABLE

ACTIVITIES. THE WASTEWATER TREATMENT PLANT WILL HAVE PRIORITY WHEN

BY OTHERS WILL BE NEEDED DURING THE DURATION OF DIKE EXPANSION

MOBILIZATION OF TEMPORARY EQUIPMENT FOR WASTEWATER TREATMENT

FACILITY OPERATIONS AND DREDGING CONTRACTOR DEMOBILIZES.

EXISTING WASTEWATER TREATMENT EQUIPMENT TO BE REMOVED WHEN 4.

HEAVY LOADS.

ALONG THE CANAL. THESE FEATURES COULD BE DAMAGED IF SUBJECT TO

AS WELL AS SUBSURFACE TIERODS SUPPORTING THE SHEET PILE WALL

CANAL. THIS AREA CONTAINS GRADIENT CONTROL SYSTEM INFRASTRUCTURE

SOUTH END OF THE SITE BETWEEN THE SOUTH DRAINAGE DITCH AND THE

CONTRACTOR SHALL NOT OPERATE MACHINERY/EQUIPMENT, DRIVE THE 3.

CORNER PADS (#2, #4, #6 AND #8) AFTER DIKE CONSTRUCTION IS COMPLETE

DIRECTED BY THE GOVERNMENT. RE-INSTALL METAL SHELTER AT THE

PADS WILL BE DISMANTLED AND PLACED INTO THE CDF STORAGE GARAGE AS

EXISTING METAL SHELTER FOR AIR MONITORING EQUIPMENT AT THE CORNER

REUSED AS EROSION PROTECTION ON UPSTREAM FACE OF DIKE. THE

APPROPRIATE. CONCRETE DEBRIS FROM THE PADS CAN BE CRUSHED AND

AIR MONITORING PAD FENCING CAN BE SALVAGED AND REUSED AS 2.

PADS (#1, #3, #5 AND #7) WILL BE INSTALLED BY OTHERS.

WILL BE INSTALLED BY CONTRACTOR. AIR MONITORING UNITS AT REMAINING

COMPLETION. AIR MONITORING UNITS AT CORNER PADS (#2, #4, #6 AND #8)

ANCILLARY AIR MONITORING FEATURES AFTER DIKE CONSTRUCTION

AND OTHER SUPPORTING EQUIPMENT. CONTRACTOR WILL INSTALL

MONITORING FEATURES, INCLUDING PADS, FENCING, ELECTRICAL FEATURES,

DEMOLITION WORK. CONTRACTOR WILL REMOVE REMAINING ANCILLARY AIR

AIR MONITORING UNITS WILL BE RELOCATED BY OTHERS PRIOR TO 1.

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/2

OPTION 1 SCOPE OPTION 2 SCOPE

ALL PIEZOMETERS ENDING IN "T" ARE TO BE INSTALLED AT THE DOWNSTREAM TOE

SHOULDER OF THE CREST.

ALL PIEZOMETERS ENDING IN "C" OR "CR" ARE TO BE INSTALLED IN THE DOWNSTREAM

COMPLETION OF EARTHWORK ACTIVITIES.

MW-1T AND MW-3T ARE TO BE DECOMMISSIONED UNDER OPTION 2 SCOPE UPON

2 SCOPE PRIOR TO COMMENCEMENT OF EARTHWORK ACTIVITIES. TOE PIEZOMETERS

TOE PIEZOMETERS MW-2T, -4T, 5T AND -6T ARE TO BE DECOMMISSIONED UNDER OPTION

COMMENCEMENT OF EARTHWORK ACTIVITIES.

PIEZOMETER MW-7T ARE TO BE DECOMMISSIONED UNDER BASE SCOPE PRIOR TO

ALL SEVEN EXISTING CREST PIEZOMETERS (MW-1C THROUGH MW-7C) AND TOE

NOTE:

THE AIR MONITORING STATIONS SHALL BE CONSTRUCTED AROUND THE SAME LOCATION. HOWEVER, TO AVOID CONFLICTS WITH THE NEW PROJECT FEATURES (RAMPS, TURNAROUNDS, ETC.), THEY CAN BE MOVED +/- 100FT PENDING COR APPROVAL.2.

PIEZOMETERS ALSO WILL BE ALLOWED AS LONG AS AN APPROVED DRILLING PROGRAM PLAN IS IN PLACE.

SEEP AREA UNDER THE BASE SCOPE ARE ALLOWED BEFORE THAT TIME PROVIDED THAT ACCESS TO THE DIKE CREST FROM THE EXISTING NORTH RAMP OR FROM THE NEW NORTHWEST CORNER RAMP IS MAINTAINED. DECOMMISSIONING OF CREST

DIKES. AIR MONITORING STATIONS ARE TO REMAIN INTACT AND FULLY FUNCTIONING UNTIL THAT TIME. HORIZONTAL EXPANSION AT THE NORTHWEST CORNER AND NORTH SIDE, AND ÜONSTRUCTION OF THE NORTHWEST CORNER RAMP AND AT THE TAR

PARTIES IS NECESSARY. CREST ROAD REMOVAL, FILL PLACEMENT ON THE CREST, AND REMOVAL OF AIR MONITORING PADS IS NOT AUTHORIZED UNTIL THE DREDGING CONTRACTOR HAS REMOVED THEIR PIPING AND OTHER EQUIPMENT FROM THE

OVERLAP BETWEEN THE WORK UNDER THIS CONTRACT AND DREDGED MATERIAL OFFLOADING INTO THE CDF IS ANTICIPATED THROUGH SEPTEMBER 2021 WITH POTENTIAL EXTENSION THROUGH OCTOBER 2021. ÜOORDINATION BETWEEN ALL ONSITE 1.

IMPORTANT NOTES:

IH Harbor & Canal Confined Disposal Facility Dike Expansion W912P620B0026

3.2.4 Security Provisions

Provide adequate outside security lighting at the Contractor's temporary facilities. The Contractor is responsible for the security of its own equipment. Notify appropriate law enforcement agency requesting periodic security checks of the temporary project field office.

For ease of construction and traffic flow, the Contractor may leave the north and/or south gate open during their work hours. It is the responsibility of the Contractor to close them at the end of their work day. If the gates are left open without the cause of the Contractor, it will be their responsibility to close them if they are the last person onsite. Coordination with other Contractors onsite may be required. Manned security at these locations is not required.

3.3 CLEANUP

Remove construction debris, waste materials, packaging material and the like from the work site daily. Dirt or mud which is tracked onto paved or surfaced roadways must be cleaned away. Restore site surfaces that are damaged by construction activites to pre-construction condition.

Materials resulting from demolition activities which are salvageable must be stored within the fenced area described above. Stored material not in trailers, whether new or salvaged, must be neatly stacked when stored.

-- End of Section --

SECTION 01 52 02 Page 5

AMD 0004 - 08/27/20

ASTM D698 (2012; E 2014; E 2015) Laboratory Compaction Characteristics of Soil Using Standard Effort (12,400 ft-lbf/cu. ft.

(600 kN-m/cu. m.))

INDIANA DEPARTMENT OF TRANSPORTATION (INDOT)

INDOT (2020) Standard Specifications and Current Supplemental Specificaitons

1.2 DEFINITIONS

1.2.1 Impervious Fill

Impervious fill includes soil materials classified as CL clays or silty clays classified as cohesive materials in accordance with ASTM D4318, ASTM C136/C136M and ASTM D1140.

1.2.2 Satisfactory Fill Materials

Satisfactory fill materials for the downstream zone of the embankment comprise any materials classified by ASTM D2487 as GW, GP, GM, GP-GM, GW-GM, GC, GP-GC, GM-GC, GW-GC, SW, SP, SM, SW-SM, SC, SW-SC, SP-SM, SP-SC, CL, ML, and CL-ML, . Satisfactory materials for grading comprise stones less than three inches in any dimension.

1.2.3 Select Granular Material

Select granular material for downstream dam slopes steeper than 2.5H:1V shall consist of INDOT Dense-Graded Coarse Aggregate Gradation No. 53

1.2.4 Filter Drainage Materials

Material for the filter layer shall meet the gradation requirements for INDOT Fine Aggregate Gradation No. 23 sand. Coarser material for the overlying drainage layer and for the toe drain shall meet the gradation requirements for INDOT Coarse Aggregate Gradation No. 8.

1.2.5 Unsatisfactory Materials

Materials which do not comply with the requirements for satisfactory materials are unsatisfactory. Unsatisfactory materials also include soils below the existing perimeter clay cap, man-made fills, trash, refuse, or backfills from previous construction. Unsatisfactory material also includes material classified as satisfactory which contains root and other organic matter, frozen material, and stones larger than 2.5 four inches .

1.2.6 Cohesionless and Cohesive Materials

Cohesionless materials include materials classified in ASTM D2487 as GW, GP, SW, and SP. Cohesive materials include materials classified as GC, SC, ML, CL, MH, and CH. Materials classified as GM and SM will be identified as cohesionless only when the fines are nonplastic. Perform testing, required for classifying materials, in accordance with ASTM D4318, ASTM C136/C136M and ASTM D1140.

1.2.7 Topsoil

Material suitable for topsoils obtained from offsite areas and stripped

SECTION 31 00 00 Page 3 topsoil from the existing embankment and downstream toe area is defined as: Natural, friable soil representative of productive, well-drained soils in the area, free of subsoil, stumps, rocks larger than one inch diameter, brush, weeds, toxic substances, and other material detrimental to plant growth. Amend topsoil pH range to obtain a pH of 5.5 to 7.

1.2.8 In-situ Borrow Materials

In-situ borrow materials are those native, undisturbed materials that are in-situ at a borrow source (new or existing) prior to being selected for use on this project.

1.2.9 Stockpiled Borrow Materials

Stockpiled borrow materials are those materials that are stockpiled for use at the time of identification for use on the project. This includes but is not limited to spoil piles, soils identified for re-use or purchased for re-use off of the original site, recycled materials including those from a commercial recycling operation, piles of material that are ex-situ at the time of identification for use on the project, and any other materials that are not in-situ in the native condition.

1.3 SYSTEM DESCRIPTION

The work covered by this section consists of furnishing all equipment, labor, materials, and incidentals, and performing all operations necessary for excavation of borrow areas. This section is applicable to materials required within the embankment dam (dike) construction. Refer to Section 31 23 00.00 20 EXCAVATION AND FILL for materials for backfill of excavations. Placement and compaction of fill materials are covered in Section 35 73 13 EMBANKMENT FOR EARTH AND ROCKFILL DAMS.

1.4 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Environmental Soil Sampling Plan for Borrow Source ; G, DH

Environmental Soil Sampling Report for Borrow Source ; G, DH

Geotechnical Laboratory Qualifications ; G, DG

SD-03 Product Data

Acceptable Zones; G, DG

SD-06 Test Reports

Borrow Source Assessment Report ; G, DG

SECTION 31 00 00 Page 4

Q1. Decant structure, the spec is only specifying the Epoxy. If you look at the drawings they are pointing to the verticals as Epoxy. Are only the verticals Epoxy and the Horizontals and all other rebar is Plain. Doesn’t make sense.

A: Please review the spec section 03 30 00 paragraph 2.4 that described the two-part epoxy grout for concrete dowels (vertical reinforcement), and paragraph 2.6.1.1 that specified the epoxy-coated for the reinforcement as indicated in the plans (vertical/dowels reinforcement). Specifically, the epoxy is intended only for the embedment length of the dowels, no need epoxy for other reinforcement.

Q2. For crane access to remove and install the bridge, Will we be able to set our crane up on top of the Dike or at the lower area?

A: Yes, you will be able to set the crane up on top of the dike with taken into consideration that the maximum crane loading on the dike crest cannot exceed the load that already indicated in Spec Sec 31 00 00 Par. 3.4.

Q3. Specification 30 00 00 Earthwork – Paragraph 2.2.1 Environmental Testing of Borrow Materials references Table 2 attached at the end of the section. At the end of the section are three tables that all have the same parameters for environmental testing of the fill material. Two of them are labeled Table 1 and one is labeled Table 2. Are the correct parameters just the ones listed on one page, or are there others that should be included?

A: The correct parameters for environmental testing of borrow materials are on Table 2. Please disregard the two Tables 1 at the end of Specification 30 00 00, as they include the same information as Table 2, correction will be made, two Tables 1 will be deleted. Table 2 should be used.

Q4. Specification 30 00 00 Earthwork – Please clarify the maximum stone size allowable for satisfactory mill materials. Paragraph 1.2.2 Satisfactory Fill Materials indicated a maximum stone size of 3 inches in any direction and Paragraph 2.1.1.2 Satisfactory Fill, references a maximum stone size of 4 inches in any dimension.

A: Section 30 00 00 has been revised, in the definitions of satisfactory fill and unsatisfactory fill. 1.2.2 and 1.2.5 in response to the RFI.

Q5. With consideration to the coordination of entrances with the facility manager, is the contractor going to have to have security at the Alternative Entrance during work hours or will we be allowed to keep the gate open during work hours and then close it upon leaving daily?

A: Specs section 01 52 02, paragraph 3.2.4 was revised to say: ”For ease of construction and traffic flow, the Contractor may leave the north and/or south gate open during their work hours. It is the responsibility of the Contractor to close them at the end of their work day. If the gates are left open without the cause of the Contractor, it will be their responsibility to close them if they are the last person onsite. Coordination with other Contractors onsite may be required. Manned security at these locations is not required”.

Q6. Can you verify if they want centrifugal submersible pumps or submersible axial type pumps used for storm water. The spec states Axial type but the drawings show centrifugal submersibles.

A: Per Section 35 45 02.00 10, paragraph 1.1 SUMMARY Design, furnish, and install four submersible non-clog wastewater identical pumping units for the both Lift Station 1 (LS1) and Lift Station 2 (LS2) shown. Each pump shall be equipped with a 10 HP submersible electric motor connected for operation on 460 volts, three phase, 60 hertz, wire service, with an adequate length of submersible cable suitable for submersible pump applications. The power cable shall be sized according to NEC and ICEA standards and have P-MSHA Approval.

Q7. Are new control panels required? Drawing shows the use of existing control panels.

A: On sheet ES-101, note 3 states "Remove electrical equipment, store and install on AMS pad after raising of dike".

On sheet E-501, note 2 states "Existing AMSs to be relocated are to be removed, maintained, and reinstalled by the contractor. Contractor is responsible for storing and securing this equipment for the duration of construction until reinstallation"

Q8. Drawing of lift station does not indicate the grade level so I do not know how deep each wet well is to provide the correct amount of guide rail pipe. Can you provide the depth of each wet well?

A: Per sheer M-302, the topsoil elevation is at 592. The top of the LS's is approximately at the same elevation.

Q9. Sheet C-101 will be revised accordingly:

Dikes Contract Drawing Sheet C-101, General Notes, Note 4 states: "Existing wastewater treatment equipment to be removed when facility operations and dredging contractor demobilizes. Mobilization of temporary equipment for occasional wastewater treatment by others may be needed during the duration of dike expansion activities. Coordination is required between all onsite contractors."

Should be revised to the following in the current Modification:

"Existing wastewater treatment equipment to be removed when facility operations and dredging contractor demobilizes. Mobilization of temporary equipment for wastewater treatment by others will be needed during the duration of dike expansion activities. The wastewater treatment plant will have priority when using this area. However, part or all of this area may be available for use by the dike construction contractor depending on the water treatment schedule and needs. Coordination is required between all onsite contractors."

Q10. The perforated pipe for the tar collection trench – how many rows are there in the perforation pattern and is it staggered? And Q11. How long is the J-Bend?

The purpose of the perforated pipe is to collect soil gas so it can be passively vented at the surface. The perforations are required to conform with the requirements in Specification Section 33 46 13 Subpart

2.1.2. The J bend has no length requirement and the opening simply needs to face downwards to prevent precipitation from entering.

Q12. I don’t see any drawings for the weather station can you provide drawings?

A: The weather station equipment (i.e., the equipment that actually collects the weather data) is USACE equipment that will be installed by USGS on the weather station tower that the dike construction contractor will provide (purchase and then install). Sheet CS107, Notes 2, 3, and 4 have the requirements for the tower and the tower pad.

1.4 SEVERE WEATHER CONDITION OF READINESS

3.3 CLEANUP

2.1.3 Geotechnical Testing Laboratory