W912BU-14-B-0004_Specs-AM3.pdf

Offers 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 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 your 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.

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

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT ID CODE

2. AMENDMENT/MODIFICATION NO. 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQ. NO. 5. PROJECT NO. (If applicable)

7. ADMINISTERED BY (If other than Item 6) CODE

STANDARD FORM 30 (REV. 10-83)

Prescribed by GSA FAR (48 CFR) 53.243

FACILITY CODE

9A. AMENDMENT OF SOLICITATION

NO.

9B. DATED (SEE ITEM 11)

10A. MODIFICATION OF CONTRACT/ORDER NO.

10B. DATED (SEE ITEM 13)

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

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

12. ACCOUNTING AND APPROPRIATION DATA (If required) copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

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

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

CHECK ONE 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)

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.

15C. DATE SIGNED

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

16C. DATE SIGNED

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

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

PAGE OF PAGES

6. ISSUED BY CODE

8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP Code) (X)

CODE

15B. CONTRACTOR/OFFEROR

(Signature of person authorized to sign)

16B. UNITED STATES OF AMERICA

(Signature of Contracting Officer)

NSN 7540-01-152-8070

Previous edition unusable

ABSECON INLET CSDR STRUCTURES, BRIGANTINE INLET TO GREAT EGG HARBOR, ATLANTIC COUNTY, NJ

THIS AMENDMENT DOES NOT EXTEND THE BID OPENING DATE.

NOTE: **NO FURTHER RFI'S WILL BE ACCEPTED.**

Please indicate receipt of this amendment on Standard Form 1442 (SOLICITATION, OFFER, AND AWARD) as Amendment 0003. Failure to acknowledge all amendments may be cause for rejection of offer.

(Continued)

US Army Corps of Engineers, Philadelphia District Wanamaker Building, 100 Penn Square East Philadelphia, PA 19107-3390

US Army Corps of Engineers, Philadelphia District POC: Gregory Keaton Wanamaker Building, 100 Penn Square East Philadelphia, PA 19107-3390

IFB W912BU-14-B-0004

10/20/2014

This page was intentionally left blank for duplex printing.

Amendment No. 0003

14. DESCRIPTION OF AMENDMENT (continued)

a. REQUESTS FOR INFORMATION (RFI) WITH RESPONSES: RFI’s with responses, annotated Amendment No. 0003, are attached to this amendment.

b. BIDDING SCHEDULE: Please delete the Bidding Schedule in its entirety and substitute the revised Bidding Schedule, annotated Amendment No. 0003, attached hereto.

c. TECHNICAL SPECIFICATIONS:

(1) Section 02 41 00 – DEMOLITION: Please delete page 02 41 00-7 in its entirety and substitute revised page 02 41 00-7, annotated Amendment No.

0003, attached hereto.

(2) Section 31 37 00 – SEAWALL CONSTRUCTION: Please delete pages 31 37 00-9 through 31 37 00-15 in their entirety and substitute revised pages 31 37 00-9 through 31 37 00-15, annotated Amendment No. 0003, attached hereto.

d. CONTRACT DRAWINGS:

(1) Please delete the following drawing in its entirety and substitute the revised drawing of the same number, with the latest revision date of 20 October 2014, attached hereto:

CS-100

(2) Please insert the following new Reference Drawings, attached hereto:

Sheet No. 17

Sheet No. 18

Sheet No. 19

e. Please indicate receipt of this amendment on Standard Form 1442 (SOLICITATION, OFFER, AND AWARD) as Amendment No. 0003. Failure to acknowledge all amendments may be cause for rejection of the bid.

RFI#

Dwg Sheet/ Spec Section Request for Information Response

Please add bid item for geotextile by the unit of square yard for the fabric required by Detail 2 on contract plan sheet C-200. Please add bid items for all details of Structure No. 2 timber similar to the breakdown of

REQUESTS FOR INFORMATION with RESPONSES Solicitation No. W912BU-14-B-0004

1 Bid Schedule add bid items for all details of Structure No. 2 timber similar to the breakdown of bid items for all boardwalk timber construction.

Please add bid items for all details of Vehicle Ramp similar to all breakdown of boardwalk elements.

Please add bid items for all reinforcing bar required for each portion of concrete including concrete bents, concrete sheet pile cap, concrete deck, etc. Please add specific bid items for all outfall structural elements included pipe, sluice gates, inlet / precast structures, concrete, rebar, etc.

Please add specific bid items for all required soil erosion and sediment control requirements including silt fence inlet filters construction driveways etc

No separate Bid Items will be provided1 Bid Schedule requirements including silt fence, inlet filters, construction driveways, etc. provided.

2 Bid Schedule

Please add bid item for AASHTO No. 01 stone by the unit of ton for the stone required by Detail 2 on contract plan sheet C-200.

Please add bid item for AASHTO No. 01 stone by the unit of ton for the stone required by Detail 3 on contract plan sheet C-200.

Please add bid item for AASHTO No. 01 stone by the unit of ton for the stone required by Detail 6 on contract plan sheet C-200.

Please add bid item for AASHTO No. 01 stone by the unit of ton for the stone required by Detail 7 on contract plan sheet C-200 See Amendment 00032 Bid Schedule required by Detail 7 on contract plan sheet C-200. See Amendment 0003

3 Permits

Please provide all permits associated for this project including USACE permits, USFWS permits, NJDEP permits, NJDOT permits, City of AC permits, and any other agencies that have permit requirements.

All State and Federal permits have been aquired. The Contractor will be required to obtain a local street and/or sidewalk opening and closing permits.

Specification 02 41 00, paragraph 3.5.3.3 ends with “… the respective Bid Items titled ‘Section 1 Boardwalk Location Demolition’, ‘Section 2 Boardwalk Location D liti ’ ‘S ti 3 B d lk L ti D liti ’ d ‘S ti 4 B d lk

See Amendment 0003. The d liti k i d i

4 02 41 00

Demolition’, ‘Section 3 Boardwalk Location Demolition’ and ‘Section 4 Boardwalk Location Demolition’.” There is no Bid Item “Section 4 Boardwalk Location Demolition”. Please provide a corrected Bidding Schedule to include all demolition work.

demolition work required in Boardwalk Section 4 is covered in "Structure 2 Location Demolition", Bid Item 17.

5 C-204

Detail 2 on sheet C-204 indicates that (2) #5 rebar, 1’-0” long are to be welded to the sheet pile web. Is the intent to support the rebar cage, or is there a structural requirement? How much weld is required? Wouldn’t a tail be needed in order to properly secure the bar to the #4 ties?

The intent is to support the rebar cage. The Contractor shall weld, as required, to complete the job.p p y q p j

6 Drawings

Please provide a cross-sectional view of the jetty and groin construction to show elevations and types of stone. At present we have no way to estimate stone to be removed and/or reused.

New Reference drawings were added to the contract that show the construction of the original groins. However, they may not reflect the exising conditions of the groins.

7 CD-100

On CD-100, there is a leader note to remove (5) 12" timber piles, but it appears that there are more in the group and they do not appear to conflict with new construction. Please clarify quantity and intent of this note.

Piles shall be removed if still present. Bid as shown.7 CD 100 construction. Please clarify quantity and intent of this note. present. Bid as shown.

8 CD-100

On CD-101, an area of concrete rubble and footings is called out in an area where no structure is indicated and only fill is to be placed. Is the intent to provide no debris within 4' of finish grade or to remove all debris within 4' of existing grade? Please clarify.

Area in question is on Sheet CD-100. The intent is to remove all debris that is visible at the start of construction.

9 02 82 14 Specification 028214, 3.3.4 – Please confirm the government provides and pays for the air monitoring on this project.

No. The Contractor pays for all air monitoring. See Section 02 82 14, Paragraph 3.3.1-b-(2)

10 Invitation for Bids Invitation for bids, V. – RFI cut-off date (10/5/14) currently falls on a Sunday.

Please consider moving this date out See Amendment 000110 Invitation for Bids Please consider moving this date out. See Amendment 0001.

11 Invitation for Bids Invitation for bids, VII. – Please confirm bids will be publically open and read aloud on the bid date.

Once real estate has been secured, bids will be publically opened and read aloud on the bid opening date.

Amendment No. 0003

RFI Page 1

12 00 73 00 Specification 007300, SC-17, d. – Please provide the coverage limits required for marine casualty and marine workmens comp.

The Government does not represent these types or amounts of insurance to be sufficient or adequate to protect the Contractor’s interests or liabilities, and any dollar limits listed are merely minimums required by this contract.

Bid guarantees are required and

13 52.228-1

52.228-1 Bid Guarantee – Please confirm a bid guarantee is required to be submitted with our bid and please also provide the required form for the bid bond.

Bid guarantees are required and the form can be acquired at the prospective bidders' Surety Company.

Section 31 37

Section 31 37 00, page 7, 2.1.2 ‘Testing’, under Abrasion Resistance – the Acceptable Test Result using C-535 is shown as “Less than 20% loss for 1000 revolutions”. Typically the USACE requirement is - Less than 20% loss for 500 revolutions. Should the specification read 500 revolutions, as is typically the case on USACE projects? As currently written the number of quarries that could

As specified in ASTM 535 - Resistance to Degradation of Large Size Coarse Aggregate the

Section 31 37 00, para 2.1.2 on USACE projects? As currently written, the number of quarries that could meet the specification would be drastically reduced versus 500 revolutions.

Large-Size Coarse Aggregate, the required revolutions are 1000.

Section 31 37 00, para 2.1.1

In Section 31 37 00, page 6 & 7, 2.1.1 ‘Quality’; the third sentence reads “The stone shall be either quarried or rehandled stone; angular, blocky, and uniform in shape with the largest stone dimension on an individual stone no more than three times the shortest dimension.” What is the expectation of the Army Corps, with regard to stone shape as described by the words ‘blocky, and uniform”. In other words, what is the ‘uniformity’ expected?

Bid as shown. No boulders or other odd shaped stone shall be acceptable.

Th t l b 800 SF i t b

16 AC-109

What is the intended location of the 800 SF of bid item 49 Concrete Slab – Steel Reinforced, 6 inches thick?

The concrete slab 800 SF is to be installed coincident with the deck re-install noted in top right hand corner of Sheet AC-109. Detail is in the middle of the same sheet.

Section W-W on drawing AC-108

Please provide a spec for the 12” x 1-1/2” edge drain fabric called out in Boardwalk Detail Section W-W on drawing AC-108.

See Amendment 0002, Sheet

AC-108

Amendment No. 0003

RFI Page 2

BIDDING SCHEDULE

(To be attached to SF 1442)

UNIT ESTIMATED

DESCRIPTION QUANTITY UNIT PRICE AMOUNT

00 10 00-3

BASE BID ITEMS

1. Mobilization / Demobilization 1 JOB LS $

2. Structures Monitoring 1 JOB LS $

3. Name NJDEP, Atlantic County and Atlantic City as 'Additional Insured' under General Liability Insurance 1 JOB LS $

STRUCTURE 1 - STATION -0+26 TO STATION 13+58

4. Structure 1 Location Demolition 1 JOB LS $

5. Removal/Disposal of Asbestos- Containing Flashing & Roofing 1,700 SF $ $

6. Concrete Pile 16-Inch Square by 38 Foot Long 185 EA $ $

7. Rehandled Stone - Structure 1 Groin / Jetty Stone 1 JOB LS $

8. Steel Sheet Pile 1,404 LF $ $

9. Articulated Concrete Block (ACB) or Stone-Filled Marine (SFM) Mattresses 134,600 SF $ $

10. Corestone under 11-Ton Capstone 12,340 TON $ $

11. 11 Ton Capstone 45,340 TON $ $

12. R-8 Riprap 16,000 TON $ $

13. Concrete Pile Cap 180 CY $ $

14. Stormwater Outfalls and Drainage Structures 1 JOB LS $

15. Sand Fill 14,000 TON $ $

16. Seeding 35,400 SY $ $

17. Bedding / Mattress Stone 1,800 TON $ $

STRUCTURE 2 - STATION 25+10 TO STATION 28+60

18. Structure 2 Location Demolition 1 JOB LS $

BIDDING SCHEDULE

(To be attached to SF 1442)

00 10 00-4

19. Rehandled Stone - Structure 2 1 JOB LS $

20. Construct Structure 2 - Timber Pile Bulkhead 241 LF $ $

21. Articulated Concrete Block (ACB) or Stone-Filled Marine (SFM) Mattresses 16,500 SF $ $

22. Corestone under 3.5-Ton Capstone 900 TON $ $

23. 3.5 Ton Capstone 5300 TON $ $

SECTION 1 BOARDWALK CONSTRUCTION - STATION -1+30 TO STATION 13+38

24. Section 1 Boardwalk Location Demolition 1 JOB LS $

25. Concrete Pile 16-Inch Square by 38 Foot Long 108 EA $ $

26. Concrete Bent 40 Foot Long 7 EA $ $

27. Concrete Bent 36 Foot Long 59 EA $ $

28. Concrete Bent 30 Foot Long 3 EA $ $

29. Concrete Bent 20 Foot Long 7 EA $ $

30. 4 inch X 14 inch SYP Joists, CCA Treated 60,610 LF $ $

31. Joist Anchors 654 EA $ $

32. Boardwalk Deck, IPE/Bethabara 52,000 SF $ $

33. Boardwalk Deck, SYP CCA TREATED 500 SF $ $

34. Boardwalk Railing, Post 444 EA $ $

35. Boardwalk Railing, Rails set of one 2” Diameter and two 1 ½” Diameter Rails 3,000 LF $ $

36. Vehicle Ramp at Pacific Avenue 1 JOB LS $

SECTION 4 BOARDWALK CONSTRUCTION - STATION 25+35 TO STATION 28+16

BIDDING SCHEDULE

(To be attached to SF 1442)

00 10 00-5

37. Concrete Pile 16-Inch Square by 38 Foot Long 77 EA $ $

38. Concrete Bent 20 Foot Long 5 EA $ $

39. 4 inch X 14 inch SYP Joists, CCA Treated 5,900 LF $ $

40. Boardwalk Deck, IPE/Bethabara 8,500 SF $ $

41. Boardwalk Deck, Reinstall 800 SF $ $

42. Boardwalk Railing, Post 102 EA $ $

43. Boardwalk Railing, Rails set of one 2 inch Diameter and two 1 ½ inch Diameter Rails 700 LF $ $

44. Bulkhead Handrail 64 LF $ $

45. Timber Pile 20 EA $ $

46. Timber Bent 100 LF $ $

47. PVC Conduit 1½ inch Schedule 40 600 LF $ $

48. Concrete Deck 5,350 SF $ $

49. Polyethylene(PE) Under Drain Pipe 2,350 LF $ $

50. Concrete Slab – Steel Reinforced, 6 inches thick 800 SF $ $

TOTAL ESTIMATED BASE BID AMOUNT: $

OPTION BID ITEMS

OPTION 1: SECTION 2 BOARDWALK CONSTRUCTION - STATION 13+38 TO STATION 17+19

51. Section 2 Boardwalk Location Demolition 1 JOB LS $

52. Concrete Pile 16-Inch Square by 38 Foot Long 59 EA $ $

53. Concrete Bent 40 Foot Long 2 EA $ $

54. Concrete Bent 20 Foot Long 17 EA $ $

BIDDING SCHEDULE

(To be attached to SF 1442)

00 10 00-6

55. 4 inch X 14 inch SYP Joists, CCA Treated 9,086 LF $ $

56. Joist Anchors 107 EA $ $

57. Boardwalk Deck, IPE/Bethabara 8,400 SF $ $

58. Boardwalk Railing, Post 117 EA $ $

59. Boardwalk Railing, Rails set of one 2” Diameter and two 1 ½” Diameter Rails 800 LF $ $

60. Remove and Dispose of Existing Concrete Pile Cap Bent 21 EA $ $

61. Remove and Dispose of Existing Concrete Pile 42 EA $ $

TOTAL ESTIMATED OPTION 1 BID AMOUNT: $

OPTION 2: SECTION 3 BOARDWALK CONSTRUCTION - STATION 17+19 TO STATION 22+16

62. Section 3 Boardwalk Location Demolition 1 JOB LS $

63. Concrete Pile 16-Inch Square by 38 Foot Long 88 EA $ $

64. Concrete Bent 40 Foot Long 3 EA $ $

65. Concrete Bent 30 Foot Long 1 EA $ $

66. Concrete Bent 20 Foot Long 24 EA $ $

67. 4 inch X 14 inch SYP Joists, CCA Treated 14,542 LF $ $

68. Joist Anchors 162 EA $ $

69. Boardwalk Deck, IPE/Bethabara 13,000 SF $ $

70. Boardwalk Railing, Post 154 EA $ $

71. Boardwalk Railing, Rails set of one 2” Diameter and two 1 ½” Diameter Rails 1,120 LF $ $

72. Remove and Dispose of Existing Concrete Pile Cap Bent 29 EA $ $

BIDDING SCHEDULE

(To be attached to SF 1442)

00 10 00-7

73. Remove and Dispose of Existing Concrete Pile 58 EA $ $

TOTAL ESTIMATED OPTION 2 BID AMOUNT: $

TOTAL ESTIMATED BASE BID AND OPTIONS 1 AND 2 AMOUNT: $

NOTE: Bidders must bid on all items.

boardwalk location demolition for Sections 1, 2, 3, or 4, including, but not limited to, demolition of wood decking and joists, wood piles and bents, metal handrail and posts, and other structures indicated to be removed or as necessary to construct Boardwalk will not be measured for payment and all costs in connection therewith shall be included in the lump sum contract prices for the respective Bid Items titled "Section 1 Boardwalk Location Demolition", "Section 2 Boardwalk Location Demolition", "Section 3 Boardwalk Location Demolition". and "Structure 2 Location Demolition".

-- End of Section --

Section 02 41 00 Page 7

2.2.2 Aggregates

2.2.2.1 Coarse Aggregates

Section 901.06.01 of the NJDOT Specifications. The grading (size number) shall be No. 67.

2.2.2.2 Fine Aggregates

Section 901.06.02 of the NJDOT Specifications.

2.2.3 Cement

Section 903.01 of the NJDOT Specifications, Type II.

2.2.4 Admixtures

Sections 903.02.01 (Air-Entraining Admixtures), 903.02.02 (Chemical Admixtures), and 903.02.03 (Mineral Admixtures) of the NJDOT Specifications, except that Class C fly ash and silica fume are not permitted.

2.2.4.1 Viscosity Modifying Admixtures

Provide anti-washout or viscosity modifying admixtures for underwater concrete placement. Provide certification that the admixture is compatible with the cementitious materials and other chemical admixtures in the proposed concrete mixture. The anti-washout or viscosity modifying admixture shall require approval by the Contracting Officer and have a proven record of performance with a minimum of five similar projects. Test per COE CRD-C 61 to determine cumulative mass loss shall be performed once for each 350 cubic yards of underwater concrete and results submitted to Contracting Officer for approval prior to continued use.

2.3 GEOTEXTILE FABRIC

As specified in Section 31 05 19 GEOTEXTILE.

2.4 R-8 RIPRAP

New riprap for stone fill shall meet the quality as specified herein for capstone and gradation requirements for R-8 riprap in accordance with PennDOT Specifications.

2.5 SAND FILL

Provide sand fill as specified in Section 33 40 00 STORM DRAINAGE UTILITIES.

2.6 STONE-FILLED (SF) MARINE MATTRESSES

See Section 31 34 10 STONE-FILLED (SF) MARINE MATTRESSES.

2.7 ARTICULATED CONCRETE BLOCK (ACB) MATTRESSES

See Section 35 31 00 ARTICULATED CONCRETE BLOCK (ACB) MATTRESSES.

2.8 BEDDING / MATTRESS STONE

Provide AASHTO #1 stone as indicated.

Section 31 37 00 Page 9

PART 3 EXECUTION

3.1 CONCRETE GROUT FOR STONE PROTECTION

All concrete grout placed below the waterline shall be tremmied in place.

3.1.1 Depositing Concrete Under Water

ACI 301 methods and equipment used shall prevent the washing of the cement from the mixture, minimize the formation of laitance, prevent the flow of water through the concrete before it has hardened, and minimize disturbance to the previously placed concrete. Tremies shall be watertight and sufficiently large to permit a free flow of concrete. Keep the discharge end continuously submerged in fresh concrete. Keep the shaft full of concrete to a level well above the water surface. Discharge and spread the concrete by raising the tremie to maintain a uniform flow. Place concrete without interruption until the top of the fresh concrete is at the required height.

3.2 DEMONSTRATION SECTION

The first 100 feet of Structure 1 shall be constructed as a test section to demonstrate the equipment, materials, workmanship and methods. The section shall demonstrate the grading, mattress and stone placing, and placing and curing of grout, within the tolerances specified. The methods and equipment shall demonstrate the adequacy for use in accomplishing the work within the requirements specified.

3.2.1 Demonstration Section Evaluation

Do not proceed with remaining construction of Structure 1 until Government approval of the demonstration section. Within a period of 7 days after completion of the section, the Contracting Officer will determine the adequacy of the section to function as part of the permanent construction.

The Contractor will be notified as to the acceptability of the demonstration section and may be directed to modify methods of construction and/or remove the section or portions thereof.

3.2.2 Removal of Demonstration Section

If removal of the demonstration section is required, it shall be conducted in such a manner as to maintain the integrity of the underlying subgrade.

Materials deemed unacceptable for reinstallation shall be disposed of off-site.

3.3 STAGING AND STOCKPILING STONE

See requirement for placing geotextile in stockpile areas in Section 01 50 00 TEMPORARY CONSTRUCTION. The Contractor may stage / stockpile stones on the existing groins at his own risk. The stability of these structures is unknown. If the groins are utilized for this purpose, pre-construction and post-construction survey cross-sections (coordinates and elevation) of the groins shall be taken every 25 feet along the length of the groins and in accordance with the standards for surveying specified in Section 01 32 10 SURVEY REQUIREMENTS.

Section 31 37 00 Page 10

3.4 EXISTING STONE

3.4.1 General

Rehandling of existing stone will be required to facilitate new stone placement. Existing capstones that are located on and adjacent to the jetty and groin, in addition to those that protrude into and interfere with the placement of the mattresses, shall be removed, weighed, sorted, and stockpiled for reuse prior to placing the mattresses. Existing stone meeting the weight and shape requirements for capstone, as specified herein, shall be reused as capstone. Existing stone, meeting the respective weight requirements for corestone or R-8 riprap, may be used as corestone or R-8 riprap, where indicated on the contract drawings.

Existing stone, not meeting the minimum weight requirements for corestone or R-8 riprap shall be disposed of offsite at no additional cost to the Government.

3.4.2 Weighing Existing Stone

Weigh all rehandled stone to to be reused as capstone or corestone, as it is being excavated, and segregate into stockpiles to ensure a particular stone meets the minimum weight required for a classification of stone.

3.4.3 Stockpile Management

Utilize a method for identifying the classification of existing stone in a particular stockpile. The method shall be clearly visible and understandable to the field personnel.

3.5 SUBGRADE PREPARATION

The surface underlying the ACB mattresses or SF marine mattresses shall be smooth and free of ruts or protrusions which could damage the geotextile.

Any irregularities shall be removed so as to ensure continuous, intimate, contact of the geotextile with all of the underlying surface. Any loose material, soft or low density pockets of material, shall be removed;

erosion features such as rills, gullies, etc., must be graded out of the surface before mattress placement.

3.6 EXCAVATION

Excavation shall be performed to the lines and grades indicated on the contract drawings. The Contractor shall not damage or undermine the stability of any existing structures encountered during his excavation operations. The excavated materials will be a mixture of sand and stone.

Unsatisfactory material uncovered shall be disposed of off-site. The remainder of satisfactory material shall be stockpiled and used as sand backfill behind Structure 2. The excavated material shall not be placed in locations where stone fill is being placed.

3.7 R-8 RIPRAP

Place R-8 riprap behind sheet pile and in the locations as indicated on the drawings.

3.8 BEDDING / MATTRESS STONE

Place AASHTO #1 stone in the locations as indicated on the drawings.

Section 31 37 00 Page 11

3.9 SAND FILL AND SAND BACKFILL

Place sand fill and sand backfill behind the sheet pile to choke R-8 stone.

3.10 CORESTONE

Place corestone in the locations as indicated on the drawings.

3.11 MATTRESS PLACEMENT

Place stone-filled (SF) marine mattresses or articulated concrete block (ACB) mattresses, as specified in Sections 31 34 10 STONE-FILLED (SF) MARINE MATTRESSES and 35 31 00 ARTICULATED CONCRETE BLOCK (ACB) MATTRESSES, respectively.

3.12 CONFIRMATION OF MATTRESSES' LOCATIONS

See Section 01 32 10 SURVEY REQUIREMENTS for the requirement for real-time confirmation of the placement location and elevation of the installed mattresses. Ensure the information is available immediately to the Contractor and the Government. The COR may require the approval of the location and elevation of each mattress prior to the Contractor commencing placement of the next mattress.

3.13 GENERAL GUIDELINES FOR PLACEMENT OF STONE

Place selected stones against the sheet pile wall in such a manner that the maximum amount of stone is in contact with the wall. Do not drop stones from a height greater than one foot in loading, transit, or placement on the structure. Place stones on the structure by feeling with the handling equipment to achieve contact when vision is obscured, i.e., below water, and then release.

Maintain all stone until accepted by the Government and any stone or other material displaced by any cause shall be replaced at no additional cost to the Government, to the lines and grades shown on the drawings.

3.14 PLACING CAPSTONE

Place capstone in one or two stone layers, as indicated on the contract drawings, and place over the underlayer stone to the final elevations, as shown on the drawings, and within the tolerances specified herein. The stones shall be closely fitted together and interlocked in a staggered pattern to prevent continuous joints in the seawall surface. Stones shall be selected for size and shape so that during their placement they will contact the adjacent stones and thereby provide assurance that no independent movement or sliding occurs. Extreme limits of the minimum weights given for the capstone shall not be continuous in any direction for more than 2 capstones.

In areas where there are two layers of capstone, corestone shall not be used as a "layer" between the top and second layer of capstone.

3.15 MEASUREMENT AND PAYMENT

3.15.1 Mobilization and Demobilization

All costs connected with the mobilization and demobilization of the

Section 31 37 00 Page 12

Contractor's plant and equipment required for the contract work will be paid for at the contract lump sum prices for these items as listed in the Bid Schedule. Sixty percent (60%) of the lump sum price will be paid to the Contractor upon completion of his mobilization at the work site. The remaining forty percent (40%) will be included in the final payment for work under this contract.

3.15.1.1 Contractor Furnished Cost Data

In the event the Contracting Officer considers that the amount in these items (sixty percent) which represents mobilization, does not bear a reasonable relation to the cost of the work in this contract, the Contracting Officer may require the Contractor to furnish cost data to justify this portion of the price. Failure to justify such price to the satisfaction of the Contracting Officer will result in the payment of actual mobilization costs, as determined by the Contracting Officer, at the completion of mobilization. The payment of the remainder of these items will be included in the final payment under the contract. The determination of the Contracting Officer in these circumstances is not subject to appeal.

3.15.1.2 Mobilization and Demobilization Costs

All costs in connection with the mobilization and demobilization of the Contractor's plant and equipment as defined below shall be included in the contract lump sum price for Base Bid Item No. 1, "Mobilization /Demobilization" as listed in the Bid Schedule.

a. Mobilization shall include all costs for operations accomplished prior to commencement of operations; that is transfer of all plant and equipment to the work site and all other incidentals in advance of work on the project site.

b. Demobilization shall include general preparation for transfer of the plant and equipment to the Contractor's home or standby base, cleanup, and the transfer of plant and equipment to the home or standby base.

3.15.2 Excavation and Backfill

No separate measurement or payment will be made for the work specified in this section for excavation and backfill and all costs in connection therewith shall be considered incidental to the bid items to which they apply.

3.15.3 Corestone Under 3.5-Ton Capstone

The work specified for providing new core stone, under 3.5-ton capstone, will be measured for payment by the ton from certified weigh tickets.

Deductions from those quantities will be made for rejected material. All costs, in connection with the core stone satisfactorily placed and accepted, shall be included in the contract unit price for the Bid Item titled "Core Stone Under 3.5-Ton Capstone". The work specified in this section for rehandling existing stone as corestone shall be considered incidental to the placement of new corestone under 3.5-ton capstone and all costs associated with rehandling existing stone as corestone, including the removal of existing stone, categorizing the stone, weighing the stone, stockpiling the stone, and placing the stone, shall be included in the contract unit price for the Bid Item titled "Corestone Under 3.5-Ton Capstone".

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3.15.4 Corestone Under 11-Ton Capstone

The work specified for providing new core stone, under 11-ton capstone, will be measured for payment by the ton from certified weigh tickets.

Deductions from those quantities will be made for rejected material. All costs, in connection with the core stone satisfactorily placed and accepted, shall be included in the contract unit price for the Bid Item titled "Corestone Under 11-Ton Capstone". The work specified in this section for rehandling existing stone as corestone shall be considered incidental to the placement of new corestone under 11-ton capstone and all costs associated with rehandling existing stone as corestone, including the removal of existing stone, categorizing the stone, weighing the stone, stockpiling the stone, and placing the stone, shall be included in the contract unit price for the Bid Item titled "Corestone Under 11-Ton Capstone".

3.15.5 11-Ton Capstone

The work specified for providing new 11-ton capstone will be measured for payment by the ton from certified weight scale tickets. Submit Weigh Scale Certification and Certified Weight Scale Tickets, by a copy of the certification from the regulation agency, attesting to the scale's accuracy and a copy of each certified weight scale ticket. Deductions from those quantities will be made for rejected material. Each capstone shall be weighed individually. All costs, in connection with the capstone satisfactorily placed and accepted, shall be included in the contract unit price for the Base Bid Item titled "11-Ton Capstone". Deductions from those quantities will be made for capstone placed outside the construction tolerances specified herein.

3.15.6 Rehandled Stone - Structure 1 Jetty and Groin Stone

The work specified for removing and resetting of existing jetty and groin stones to allow for the installation of the steel sheet piling will not be measured for payment. All costs, in connection therewith shall be included in the contract lump sum price for the Bid Item titled "Rehandled Stone - Structure 1 Jetty and Groin Stone".

3.15.7 3.5-Ton Capstone

The work specified for providing new 3.5-ton capstone will be measured for payment by the ton from certified weight scale tickets. Submit Weigh Scale Certification and Certified Weight Scale Tickets, by a copy of the certification from the regulation agency, attesting to the scale's accuracy and a copy of each certified weight scale ticket. Deductions from those quantities will be made for rejected material. Each capstone shall be weighed individually. All costs, in connection with the capstone satisfactorily placed and accepted, shall be included in the contract unit price for the Base Bid Item titled "3.5-Ton Capstone". Deductions from those quantities will be made for capstone placed outside the construction tolerances specified herein.

3.15.8 Rehandled Stone - Structure 2(Deleted text)

The work specified for removing and resetting of existing stones to allow for construction of the timber pile bulkhead will not be measured for payment. All costs, in connection therewith shall be included in the contract lump sum price for the Bid Item titled "Rehandled Stone -

Section 31 37 00 Page 14

Structure 2".

3.15.9 Articulated Concrete Block (ACB) Marine Mattresses

The work specified in this section for providing articulated concrete block (ACB) mattresses will be measured and payment will be made as specified in Section 35 31 00 ARTICULATED CONCRETE BLOCK (ACB) MATTRESSES.

3.15.10 Stone-Filled (SF) Marine Mattresses

The work specified in this section for providing Stone-Filled (SF) Marine Mattresses in lieu of Articulated Concrete Block (ACB) Marine Mattresses shall be measured and payment will be made as specified in Section 31 34 10

STONE-FILLED(SF) MARINE MATTRESSES.

3.15.11 R-8 Riprap

The work specified herein for R-8 riprap will be measured for payment by the ton from certified weigh tickets. Deductions from those quantities will be made for rejected material. All costs in connection therewith shall be included in the contract unit price for the Bid Item titled "R-8 Riprap".

3.15.12 Sand Fill

The work specified in this section for sand fill will be measured for payment by the ton from certified weigh tickets. All costs in connection therewith shall be included in the contract unit price for the Base Bid Item titled "SAND FILL".

3.15.13 Bedding / Mattress Stone

The work specified herein for AASHTO #1 bedding / mattress stone will be measured for payment by the ton from certified weigh tickets. Deductions from those quantities will be made for rejected material. All costs in connection therewith shall be included in the contract unit price for the Bid Item titled "Bedding / Mattress Stone".

3.15.14 Concrete Grout for Stone Protection

The work specified herein for the grouted stone protection will not be measured for payment. All costs in connection therewith shall be considered incidental to the capstone placement specified in Section

31 37 00 SEAWALL CONSTRUCTION.

3.15.15 Concrete Cap

The work specified in this section for constructing a concrete cap on the steel sheet pile shall be measured and payment will be made as specified in Section 03 30 53 CAST-IN-PLACE CONCRETE.

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