W911WN-09-B-0007-0002.pdf

W81ET491342797

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

RE: Emsw orth Locks and Dam, Back Channel Abutment Stabilization

This amendment is issued to make revisions to the bid schedule, answ er questions and extend the bid opening date to July 27, 2009 at 11:00 AM.

See Summary of Changes for details.

1. CONTRACT ID CODE PAGE OF PAGES

J 1 9

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

16C. DATE SIGNED

BY 21-Jul-2009

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 W911WN-09-B-0007

X 9B. DATED (SEE ITEM 11)

18-Jun-2009

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 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

21-Jul-2009

CODE

U.S. ARMY ENGINEER DISTRICT, PITTSBURGH

ATTN CECT-LRP

W S MOORHEAD FEDERAL BUILDING

1000 LIBERTY AVENUE ROOM 2116

PITTSBURGH PA 15222-4186

W911WN 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W911WN-09-B-0007

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION 00010 - SOLICITATION CONTRACT FORM

The required response date/time has changed from 23-Jul-2009 11:00 AM to 27-Jul-2009 11:00 AM.

The following have been modified:

SECTION 00010 BID SCHEDULE

Bid Schedule

ITEM DESCRIPTION EST. QTY U/M UNIT PRICE AMOUNT

0001 REIMBURSEMENT FOR ACTUAL

PERFORMANCE AND PAYMENT BOND

PREMIUMS

1 LS NOT TO EXCEED $

0002 MOBILIZATION AND DEMOBILIZATION 1 LS $ $

0003 INSTRUMENTATION - INSTALLATION,

MONITORING, DATA REDUCTION AND

INTERPRETATION, AND REPORTING

1 LS $ $

0004 MONTHLY PROGRESS IMAGES 15 MO $ $

0005 LAYDOWN AND STAGING AREA 1 LS $ $

0006 FENCE REMOVAL AND NEW IN-KIND

REPLACEMENT (228 LF, INCLUDING 1-

DOUBLE SWING ENTRANCE GATE AND

1-PERSONNEL GATE)

0007 DEMOLITION OF POSTS AND CABLES 70 LF $ $

0008 EARTHWORK - WORK PLATFORM

BEHIND ABUTMENT WALL

1200 CY $ $

0009 WORK PLATFORM, AGGREGATE BASE

COURSE

214 SY $ $

0010 WORK PLATFORM RESTORATION,

GROUTED R-3 RIPRAP OVER FS-1 FILTER

STONE ON PLATFORM

214 SY $ $

0011 WORK PLATFORM RESTORATION,

GROUTED R-4 RIPRAP OVER FS-2 FILTER

STONE ON CUT SLOPE

420 SY $ $

0012 WORK PLATFORM RESTORATION, 120 LF $ $

TRENCH DRAIN

0013 NON-CONTAMINATED MATERIAL,

TEMPORARY STORAGE AND OFFSITE

DISPOSAL

1004 CY $ $

0014 CONTAMINATED MATERIAL,

TEMPORARY STORAGE AND OFFSITE

DISPOSAL

240 CY $ $

0015 CHEMICAL DATA QUALITY CONTROL 1 LS $ $

0016 DRILLING HOLES IN CONCRETE FOR 7-

INCH DIAMETER MICROPILES

468 LF $ $

0017 DRILLING HOLES IN SOIL FOR 7-INCH

DIAMETER MICROPILES

732 LF $ $

0018 DRILLING HOLES IN ROCK FOR 7-INCH

200 LF $ $

0019 PREGROUTING HOLES (ROCK SECTION)

FOR MICROPILES

120 BAGS $ $

0020 REDRILLING GROUTED HOLES FOR

WATERTIGHTNESS TESTING FOR 7-INCH

200 LF $ $

0021 WATERTIGHTNESS TESTING FOR 7-INCH

20 EA $ $

0022 7-INCH DIAMETER MICROPILES AT

LANDSIDE

7 EA $ $

0023 7-INCH DIAMETER MICROPILES AT

RIVERSIDE

13 EA $ $

0024 ABANDONMENT OF HOLES FOR

MICROPILES AT LANDSIDE

2 EA $ $

0025 ABANDONMENT OF HOLES FOR

MICROPILES AT RIVERSIDE

2 EA $ $

0026 CLEAN OUT EXISTING WEEP HOLES

THROUGH ABUTMENT WALL

0027 DRILL NEW 4-INCH DIAMETER WEEP

HOLES THROUGH ABUTMENT WALL

4 EA $ $

0028 ABUTMENT COMBINATION WALL, 48-

INCH DIAMETER BY 1/2-INCH THICK PIPE

PILE/CASING

912 LF $ $

0029 ABUTMENT COMBINATION WALL, PZC

18 METAL SHEET PILING

1862 LF $ $

0030 ABUTMENT COMBINATION WALL,

HP12X53 END PILE

38 LF $ $

0031 ABUTMENT COMBINATION WALL,

W33X263 KING PILE (PILES K1 TO K6 AND

K19 TO K24)

12 EA $ $

0032 ABUTMENT COMBINATION WALL,

STIFFENED W33x263 KING PILE (PILES K7

TO K18)

12 EA $ $

0033 ABUTMENT COMBINATION WALL, 42-

INCH DIAMETER ROCK SOCKET

384 LF $ $

0034 ABUTMENT COMBINATION WALL,

CONCRETE FOR SOCKETED PIPE PILES

544 CY $ $

0035 ABUTMENT COMBINATION WALL,

REINFORCED CONCRETE CAP/SLAB

43 CY $ $

0036 DRILLING CASED HOLES IN CONCRETE

FOR ROCK ANCHORS

87 LF $ $

0037 DRILLING CASED HOLES IN SOIL FOR

ROCK ANCHORS

390 LF $ $

0038 DRILLING HOLES IN ROCK FOR ROCK

ANCHORS (PARTLY CASED)

222 LF $ $

0039 PREGROUTING HOLES (BOND ZONE) FOR

ROCK ANCHORS

134 BAGS $ $

0040 REDRILLING GROUTED HOLES FOR

WATERTIGHTNESS TESTING OF ROCK

ANCHORS

222 LF $ $

0041 WATERTIGHTNESS TESTING FOR ROCK

ANCHORS

6 EA $ $

0042 FURNISH AND INSTALL ROCK ANCHORS

(INCLUDING ALL COMPONENTS)

6 EA $ $

0043 PERFORMANCE TESTS FOR ROCK

ANCHORS (INCLUDING ALL TEST

COMPONENTS, RECORDS, DATA

REDUCTION, REPORTING, RETESTING,

AND LIFTOFF AND LOCKOFF)

1 EA $ $

0044 PROOF TESTS FOR ROCK ANCHORS

(INCLUDING ALL TEST COMPONENTS,

RECORDS, DATA REDUCTION,

REPORTING, RETESTING, AND LIFTOFF

AND LOCKOFF)

5 EA $ $

0045 ABUTMENT COMBINATION WALL,

REPLACE SALVAGED GRADED RIPRAP

AND DERRICK STONE AGAINST

ABUTMENT SECTION AND BEHIND

SLOPE SECTION OF COMBINATION WALL

0046 ABUTMENT WALL REPAIR AND ROCK

ANCHOR RECESSES, CONCRETE

REMOVAL AND OTHER DEMOLITION

162 CY $ $

0047 ABUTMENT WALL REPAIR, DOWELED

AND REINFORCED CONCRETE REPAIRS,

ROCK ANCHOR ENCASEMENT, AND

MISCELLANEOUS CONCRETE REPAIR

WORK

190 CY $ $

0048 ABUTMENT WALL REPAIR, INSTALL

NEW HANDRAIL

152 LF $ $

0049 PROJECT AND SAFETY SIGNS 1 LS $ $

0050 BOLLARD INSTALLATION 3 EA $ $

SUBTOTAL, ITEMS 0001 THRU 0050, INCLUSIVE $

* ALL QUANTITIES ARE ESTIMATED, EXCEPT WHERE THE UNIT IS GIVEN AS "LS" OR "EA".

DO NOT ROUND OFF TOTALS. IN CASE OF A VARIATION BETWEEN THE UNIT PRICE AND THE

EXTENSION, THE UNIT PRICE WILL BE CONSIDERED TO BE THE BID. IF A MODIFICATION TO A BID BASED ON UNIT PRICES IS SUBMITTED, WHICH PROVIDES FOR A LUMP SUM ADJUSTMENT TO THE

TOTAL ESTIMATED COST, THE APPLICATION OF THE LUMP SUM ADJUSTMENT TO EACH UNIT

PRICE IN THE BID SCHEDULE MUST BE STATED. IF IT IS NOT STATED, THE BIDDER AGREES THAT THE LUMP SUM ADJUSTMENT SHALL BE APPLIED ON A PRORATA BASIS TO EVERY UNIT PRICE IN THE BID SCHEDULE. IF ITEM NO. 1 IS NOT APPLICABLE BECAUSE THE BID IS UNDER $25,000, THE

BIDDER SHOULD STATE “N/A” IN THE SPACE PROVIDED FOR THE AMOUNT.

THE FOLLOWING IS A LIST OF ABBREVIATIONS AND THEIR MEANINGS AS USED IN THE PRICE

SCHEDULE UNDER U/M (UNIT OF MEASURE):

BAGS OF MATERIAL BAGS

CUBIC YARDS CY

EACH EA

LINEAR FOOT LF

LUMP SUM LS

MONTH MO

SQUARE YARDS SY

SECTION 00800 - SPECIAL CONTRACT REQUIREMENTS

The following have been added by full text:

AMENDMENT 0002

Q24. Drawing S-3125, Section D, shows a 9-inch and 7-inch casing for the 7-inch diameter micropile in rock. Is this an error? If the micropile is cased in rock the bond zone will be negated and the micropile will be ineffective.

A24. Drawing S-3125, Section D shows a 9-inch diameter hole with a 7-inch diameter casing, and requires grout throughout the rock bond zone including the annulus between the casing O.D.

and drill hole. However, the Government will consider the specified 7-inch diameter casing grouted into an oversized or underreamed rock socket smaller than 9-inch diameter, if the Contractor provides a configuration of equivalent structural capacity and perimeter surface area grouted into rock (combination of rock socket minimum diameter and length) at no additional cost to the Government

Also, for additional clarification, note the following:

1. The micropile design basis used an ultimate grout bond strength of 200 psi and an allowable grout bond strength of 100 psi. The degree of surface preparation and treatment of the micropile casings shall be established to attain these required grout-to-casing bond strengths.

2. The joints of permanent micropile casing may consist of threaded flush joints typical in the oil industry. However, joints shall not be located within 4 feet above to 10 feet below the base of the existing abutment wall (reference El. 688.0).

Q25. Drawing S-3125, Section D, calls for a 9” diameter hole in rock. The largest hole diameter that can be drilled using 7” diameter casing is 7-3/4”. The additional capacity can be made up lengthening the bond zone. Please provide direction.

A25. See Q&A 24.

Q26. Specification section 31 68 13, paragraph 3.2.2, Drilling Through Concrete, states that “Holes through concrete in existing structures shall be core drilled through out the entire length………..structure.” However the last sentence in this paragraph reads “A 30-inch to 36-inch long cored starter/pilot hole is required if a “down-the-hole” hammer or other percussion type drilling methods are used.”

Can you please clarify if we can drill with percussion methods, assuming we core drill the starter hole?

A26. Percussion methods are acceptable if the starter hole is core drilled. A 30-inch to 36-inch long cored starter/pilot hole is required if a down-the-hole hammer or other percussion type drilling methods are used. The Government reserves the right to require the Contractor to core a longer starter/pilot hole or adopt alternative drilling methods at no additional cost, as necessary to preclude the Contractor’s drilling activities from disturbing the existing concrete

Q27. Section 35 20 23 Dredging – 1.5 Quantity of Material states “The total estimated amount of material to be removed from within the specified limits, including side slopes, but excluding overdepths, is shown on the bid schedule. This estimated quantity is for bidding purposes and for application of the Contract Clause “Variation in Estimated Quantity” includes overdepth, derrick stone, and graded stone”

Section 35 20 23 Dredging – 1.11 Basis of Bids states “Base bids on the quantity of dredging indicated.”

Will quantities of dredged material be provided? And will a bid item also be provided for excavating, staging, and segregating this material? Currently it appears that the excavation of this material is included in Item 0045, which is a Lump Sum bid item, with the description of Replace Salvaged Graded Riprap and Derrick Stone. Please clarify.

A27. The quantities of dredged material can be assumed from the specifications. No quantity will be specified since there is a degree of uncertainty on what will be encountered. And no bid item will be provided for excavating, staging, and segregating the dredged material. It is the intent of the project to dredge in front of the existing abutment to facilitate the combination wall construction. Once the combination wall is complete, suitable material that was dredged will be backfilled behind the combination wall.

Q28. There have been significant obstructions along the wall line for the work at the Emsworth Main Channel project. From observing current conditions at the Back Channel site similar conditions can be anticipated. Note 6 on sheet S-3124 indicates that USACE also believes significant obstructions will be encountered. This note directs the contractors to pre-excavate/backfill to elevation 688 or deeper, if necessary and approved by the Contracting Officer. Since there is no bid item for this pre-excavation/backfill, the quantity of material from elevation 691.5 to 688 must be considered incidental to other combination wall work. How will the contractor be compensated for any additional pre-excavation/backfill work that the Contracting Officer may require?

A28. Consideration will be taken during construction if non-specified (ie. not derrick stone, rip-rap, or silt) objects are encountered. It will the be contractors responsibility to cease operation if non-specified objects are found and communicate to the contracting officer the problem. At that time, the contracting officer will determine the coarse of action and proper compensation.

Q29. Due to ongoing work at the Emsworth Main Channel project, some flow is being diverted to the Back Channel. This may significantly impact the work at the Back Channel. Has this condition been considered in the allotted non-work days per month and anticipated performance time published in the contract documents?

A29. The estimated gate schedule in the specifications is a representation of how the gate will be operated during increased flow. Increased flow is based on inclement weather. Thus the allotted non-work days would be the same if work was being performed on the main channel or not. No additional non-work days will be added to the contract.

Q30. One of the subcontractors bidding the micro-piles just informed me that his takeoff for Item 0017 (soil drilling) is 620 LF, not the 732 LF listed on the Bid Schedule. Please verify the bid quantity.

A30. The 732 LF is correct. It includes 620 LF of driling in soil below the concrete for all piles and 112 LF of drilling in soil above the concrete step for the landside piles

Q31. In the Q&A section of Addendum #1 for the above referenced project the answer to Question #18 states “The Bid Item 0013 quantity should be changed to 1,004 CY to encompass micropile and anchor drilling spoils (additional 44 CY).” The Bid Schedule included with this addendum does not reflect this change. Will a revised Bid Schedule be distributed, or should be bid the quantity on the Bid Schedule provided in Addendum #1?

A31. Please see the updated Bid Schedule included in Amendment 0002.

Q32. Is a full time CQC Systems Manager required?

A32. Yes

Q33. Division 2, section 31 6333, Micropiles, paragraph 2,1,2 requires that surface of casing be roughened or prepared as required "to obtain the required minimum ultimate grout bond strength, Drawing S-3125 does not show any surface treatment or required ultimate bond strength, What surface preparation is required?

A33 To be addressed in Amendment 0003

Q34. Division 2, section 31 6333, Micropiles, paragraph 2,2,1 requires that casing joints develop 100% of the tensile strength of the casing, This is only nearly possible by using external couplers, since welding of N-80 casing requires special treatment.

Will industry typical flush joint threads be acceptable and this requirement waived?

A34. To be addressed in Amendment 0003

Q35. Division 2, section 31 6333, Micropiles, paragraph 3,2,3 essentially requires duplex drilling with water for the soil stratum, Drawing S-3125 requires a 9 inch hole in rock, Therefore, drilling with larger temporary casing and a larger corehole in the abutment wall seems to be required, Division 2, section 31 6333, Micropiles, paragraph 3.2.9 requires water testing of the rock portion and then grouting and redrilling. With full length 7 inch casing, this will require oversized temporary casing which may become grouted in place. Is temporary casing really intended? Can a smaller rock socket of equivalent structural strength and perimeter surface area be substituted?

A35. To be addressed in Amendment 0003

Q36. USACE response to Q23 indicates that they have the same predicament that the contractors have regarding material quantities. In fairness to the contractors and to insure that USACE receives similar, responsive bids from all contractors, assumed bid quantities should be provided.

A36. See Amendment 0001 Question 23 (Q23).

Q37. Please clarify Note 6 on Sheet S-11-32. What is the expected quantity and how is additional Rip Rap to be paid?

A37. See Amendment 0001 Question 23 (Q23).

(End of Summary of Changes)