Am0001.pdf

Am #0001 - 1

DEPARTMENT OF THE ARMY

Omaha District, Corps of Engineers 106 South 15th Street Omaha, Nebraska 68102-1618

:NOTICE: Failure to acknowledge : Solicitation No. W9128F 08 B 0005 :all amendments may cause rejec- :

:tion of the bid. See FAR : Date of Issue: 15 Apr 2008 :52.214-3 of Section 00100 : Date of Opening: 15 May 2008

Amendment No. 0001 28 April 2008

SUBJECT: Amendment No. 0001 to Specifications and Drawings for Construction of Antelope Creek, Phase 3, Flood Protection Project, Lincoln, NE Solicitation No. W9128F 08 B 0005.

TO: Prospective Bidders and Others Concerned

1. The specifications and drawings for subject project are hereby modified as follows (revise all specification indices, attachment lists, and drawing indices accordingly).

a. Specifications. (Descriptive Changes.)

(1) Section 00100 Page 8, paragraph 17.7, line 11, delete “CADD files are only available in MicroStation V8 (AutoCadd files are not available).” and substitute “CADD files are available for downloading in AutoCadd and MicroStation V8.”

(2) Attachment to Section 00800, Appendix A, increase number of half size drawings for Wayne Teten from “4” to “6” and increase total half size copies from “18” to “20”.

(3) Section 01550 Page 22,

a) Paragraph 42.2, delete “Lump Sum.” and substitute “Cubic Yard.”

b) Paragraph 42.3, delete “Payment for this item shall be the lump sum applied on a progressive basis depending on the percentage of work completed.” and substitute “Applicable unit price times the number of cubic yards of concrete placed.”

(4) Section 02310 Page 11, paragraph 3.5.10, delete first sentence, "The Contractor shall install four 7.5 pound magnesium marine anodes to the sluice gate as shown on the drawings." and substitute "The Contractor shall install four 7.5 pound magnesium marine anodes to the sluice gate as shown on the attachment to this specification section."

(5) Section 13280A Page 11, paragraph 1.3, delete the 6th subparagraph and substitute the following:

“Asbestos was identified in the floor mastic in the basement (estimate 576 sq

ft) as well as the textured ceiling (estimate 576 sq ft per ceiling) throughout the house at 420 North 20th Street. A waiver has been received from the Asbestos Control Program (ACP) Manager, Department of Health and

Am #0001 - 2

Humans Services (DHHS) for the State of Nebraska, stating that the asbestos containing floor tile mastic can be left in place during demolition contingent that the concrete will not be recycled or used for beneficial fill material. (See letter dated 26 February 2008 from ACP Manager, DHHS.)

Further point count testing of textured ceiling material was conducted to determine percent ACM and the ACM was determined to contain only 0.75% chrysotile, less than the 1% that would require abatement. (See Sample Number 01252008-420N20-006, results received on 23 February 2008.)”

b. Specifications (New and/or Revised and Reissued). Delete and substitute or add specification pages as noted below. The substituted pages are revised and reissued with this amendment.

Pages Deleted Pages Substituted or Added

00010-3 thru 00010-7 00010-3 thru 00010-7

--- Attachment to Section 02310

c. Drawings (Live Files). Drawings as described in Section 00100 Page 8 paragraph 17.7 CADD AND ELECTRONIC DESIGN FILES are available for downloading in both MicroStation V8 and AutoCadd. See files labeled “AutoCadd Drawings.zip” and “MicroStation Drawings.zip”

2. This amendment is a part of the bidding papers and its receipt shall be acknowledged on the Standard Form 1442. All other conditions and requirements of the specifications remain unchanged. If the bids have been mailed prior to receiving this amendment, you will notify the office where bids are opened, in the specified manner, immediately of its receipt and of any changes in your bid occasioned thereby.

a. Hand-Carried Bids shall be delivered to the U.S. Army Corps of Engineers, Omaha District, Contracting Division (Room 301), 106 South 15th Street, Omaha, Nebraska 68102-1618.

b. Mailed Bids shall be addressed as noted in Item 8 on Page 00010-1 of Standard Form 1442.

3. Bids will be received until 2:00 p.m., local time at place of bid opening, 15 May 2008.

Attachments:

Spec Pages listed in 1.b. above Dwgs. listed in 1.c. above Responses To Contractors Questions (For Information Only)

U.S. Army Engineer District, Omaha Corps of Engineers 106 South 15th Street Omaha, Nebraska 68102-1618

28 Apr 2008

MFS/4411

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BIDDING SCHEDULE (with Options)

Basic

Item Estimated Unit No. Description Quantity Unit Price Amount

0001 All plant, material, and labor required for CLEARING AND GRUBBING Job L.S. $________

0002 All plant, material, and labor required for PAVEMENT REMOVAL AND DISPOSAL Job L.S. $________

0003 All plant, material, and labor required for CHANNEL LINING REMOVAL AND DISPOSAL Job L.S. $________

0004 All plant, material, and labor required for DEWATERING Job L.S. $________

0005 All plant, material, and labor required for EXCAVATION 275,000 C.Y. $________ $________

0006 All plant, material, and labor required for RUBBLE EXCAVATION

AND DISPOSAL 2,000 C.Y. $________ $________

0007 All plant, material, and labor required for UTILITY DEMOLITION Job L.S. $________

0008 All plant, material, and labor required for CLEAR TRACT (420 NORTH 20TH STREET) excluding Items 0009 and 0010 Job L.S. $________

0009 All plant, material, and labor required for LEAD REMOVAL AND DISPOSAL (420 NORTH 20TH STREET) Job L.S. $________

0010 All plant, material, and labor required for ASBESTOS REMOVAL AND

DISPOSAL (420 NORTH 20TH STREET)

0010A. Textured Ceiling 1,700 S.F. $________ $________ 0010B. Floor Mastic 1,000 S.F. $________ $________

0011 All plant, material, and labor required for CLEAR TRACT (2218 “N” STREET) Job L.S. $________

0012 All plant, material, and labor required for CLEAR TRACT (2231 “N” STREET) excluding Items 0013 through 0016 Job L.S. $________

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0013 All plant, material, and labor required for LEAD REMOVAL AND DISPOSAL (2231 “N” STREET) Job L.S. $________

0014 All plant, material, and labor required for ASBESTOS REMOVAL AND

DISPOSAL (2231 “N” STREET)

0014A. Insulation 60 L.F. $________ $________ 0014B. Glazing 200 L.F. $________ $________ 0014C. Caulking 250 L.F. $________ $________

0015 All plant, material, and labor required for SUMP/DRAIN

REMOVAL AND DISPOSAL

(2231 “N” STREET) Job L.S. $________

0016 All plant, material, and labor required for PCB AND/OR MERCURY

REMOVAL AND DISPOSAL

(2231 “N” STREET) Job L.S. $________

0017 All plant, material, and labor required for CLEAR TRACT (KUKLIN POOL AND BATH HOUSE) excluding Items 0018 and 0019 Job L.S. $________

0018 All plant, material, and labor required for ASBESTOS REMOVAL AND

DISPOSAL (KUKLIN POOL AND BATH HOUSE) 100 L.F. $________ $________

0019 All plant, material, and labor required for LEAD REMOVAL AND DISPOSAL (KUKLIN POOL BATH HOUSE) Job L.S. $________

0020 All plant, material, and labor required for CLEAR TRACT (OLD MUNY POOL AND PUMP HOUSE) excluding Items 0021 and 0022 Job L.S. $________

0021 All plant, material, and labor required for ASBESTOS REMOVAL AND

DISPOSAL (OLD MUNY POOL AND PUMPHOUSE

PIPING) 100 L.F. $________ $________

0022 All plant, material, and labor required for ASBESTOS REMOVAL AND

DISPOSAL (OLD MUNY POOL PUMP HOUSE

EXTERIOR) 1,200 S.F. $________ $________

0023 All plant, material, and labor required for LEAD REMOVAL AND

DISPOSAL (EXISTING PEDESTRIAN

BRIDGE) Job L.S. $________

0024 All plant, material, and labor required for PEDESTRIAN BRIDGE #3 excluding Item 0025 Job L.S. $________

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0025 All plant, material, and labor required for RELOCATED IRRIGATION LINE (PEDESTRIAN BRIDGE #3) Job L.S. $________

0026 All plant, material, and labor required for DRAINAGE STRUCTURES

0026A. Drainage Structure #30 Job L.S. $________ 0026B. Drainage Structure #31 Job L.S. $________ 0026C. Drainage Structure #32 Job L.S. $________ 0026D. Drainage Structure #33 Job L.S. $________ 0026E. Drainage Structure #34 Job L.S. $________

0027 All plant, material, and labor required for CRUSHED STONE Job L.S. $________

0028 All plant, material, and labor required for COMPACTED BACKFILL Job L.S. $________

0029 All plant, material, and labor required for CONCRETE LOW FLOW CHANNEL excluding Item 0042, OPTION 2 – EAST DOWNTOWN PARK

CONCRETE LOW FLOW CHANNEL 400 C.Y. $________ $________

0030 All plant, material, and labor required for CONCRETE CHANNEL

LINING 760 C.Y. $________ $________

0031 All plant, material, and labor required for CELLULAR CONCRETE

MATTRESS

0031A. Type A 12,550 S.Y. $________ $________ 0031B. Type B 3,200 S.Y. $________ $________

0032 All plant, material, and labor required for CONCRETE BIKE TRAIL 7,660 S.Y. $________ $________

0033 All plant, material, and labor required for LABYRINTH WEIR Job L.S. $________

0034 All plant, material, and labor required for CONDUIT EXTENSION Job L.S. $________

0035 All plant, material, and labor required for “N” STREET ROADWAY AND UTILITIES Job L.S. $________

0036 All plant, material, and labor required for TOPSOIL Job L.S. $________

0037 All plant, material, and labor required for SEEDING AND MULCHING 20 Acres $________ $________

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0038 All plant, material, and labor required for SURFACE EROSION

CONTROL BLANKET

0038A Erosion Control Blanket 56,000 S.Y. $________ $________ 0038B Turf Reinforcement Mat 16,400 S.Y. $________ $________

0039 All plant, material, and labor required for LANDSCAPING Job L.S. $________

0040 ALL REMAINING WORK excluding Basic bid items 0001 through 0039 and Optional bid items 0041 through 0049 listed below Job L.S. $________

BASIC TOTAL AMOUNT (Items 0001 through 0040) $________________

Options

Item Estimated Unit No. Description Quantity Unit Price Amount

0041 All plant, material, and labor required for OPTION 1 – BENT

ENCASEMENT

0041A. “O” Street Bridge Job L.S. $________ 0041B. “P” Street Bridge Job L.S. $________ 0041C. “Q” Street Bridge Job L.S. $________

0042 All plant, material, and labor required for OPTION 2 – EAST DOWNTOWN

PARK CONCRETE LOW FLOW CHANNEL 1,725 C.Y. $________ $________

0043 All plant, material, and labor required for OPTION 3 – EAST DOWNTOWN

PARK RETAINING WALLS (RESOURCE

DEVELOPMENT) Job L.S. $________

0044 All plant, material, and labor required for OPTION 4 – EAST DOWNTOWN

PARK RETAINING WALLS (LINCOLN PARKS &

RECREATION DEVELOPMENT) Job L.S. $________

0045 All plant, material, and labor required for OPTION 5 – EAST DOWNTOWN PARK IRRIGATION Job L.S. $________

0046 All plant, material, and labor required for OPTION 6 – “N” STREET BRIDGE Job L.S. $________

0047 All plant, material, and labor required for OPTION 7 – “N” STREET BRIDGE PILING (HP 10 x 42) 4,335 feet $________ $________

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0048 All plant, material, and labor required for OPTION 8 – “N” STREET BRIDGE PILING (HP 14 x 89) 2,640 feet $________ $________

0049 All plant, material, and labor required for OPTION 9 – “N” STREET BRIDGE ABUTMENT RETAINING WALLS) Job L.S. $________

BASIC + OPTIONS TOTAL AMOUNT

(Basic Items 0001 through 0040, and Option Items 0041 through 0049) $____________

Notes for Bidding Schedule:

1. See Section 00100, INSTRUCTIONS, CONDITIONS, & NOTICES TO OFFERORS, for evaluation of options. The Government reserves the right to exercise an option within 60 days after issuance of Notice to Proceed. See Section 00800 for completion dates for the basic and options.

2. Bid prices must be entered for all items of the schedule. Total amount bids submitted without bid prices being entered on individual items will be rejected.

Extensions will be subject to verification by the Government. In case of variation between the unit price and the extension, the unit price will be considered the bid. In case of variation between the individual bid item prices and the total amount, the individual bid prices will be considered the bid.

3. Quantities for unit priced items are estimated only and the respective unit price will prevail in the event of an overrun or underrun subject to Contract Clause (Section 00700) "Variation in Estimated Quantities."

4. A modification to a bid, which provides for a single adjustment to the total amount bid, should state the application of the adjustment to each respective unit price and lump sum price affected. If the modification is not so apportioned, the single adjustment will be applied to Basic Bid Item No. 0040.

5. See Section 01550, MEASUREMENT AND PAYMENT, for additional information on the bid items.

SECTION

ANODE

REMOVE PAINT

ON STIFFENER

PLATE FOR

GOOD CONTACT

ANODE

L 4"X4"X 1/4 "X0’-6"

C

SLUICE GATE - ELEVATION

4 ANODES

PER GATE,

SEE DETAIL

THIS SHEET

ANODE DETAIL

L 1/2 " DIA.

HEX HEAD

BOLT & NUT

WITH

WASHER

1/2 " DIA.

HEX HEAD

BOLT & NUT

WITH

WASHER

L 4" X 4"

X 1/4 "

X 0’-6"

NO SCALE

NO SCALE

NO SCALE

SLUICE GATE

STIFFENER

PLATE

SLUICE GATE

Antelope Creek Flood Control Project Phase 3 Responses To Contractors Questions

AM0001

Question 1 I would like a clarification on the disposal of unsuitable and excess excavation materials. If I had a land owner that has an approved flood plain fill permit, would it be acceptable to the Corps to haul these materials to this site. If you could please clarify for me and email me back I would greatly appreciate it.

Response: Material excavated from the project can NOT be placed in a floodplain, irrespective of an existing permit.

Question 2 On Sheet AV6.15 of the contract drawings, please verify if we could build this bridge with the same methods that the P & Q Street Antelope Valley post-tension flat slab bridges were built? These bridges were not excavated. They were built on ground using false slab underneath the post tensioned slab. Contractor would propose building this structure in the same method as P & Q in order to save construction costs for the owner. This is also a safer option of bridge building.

Response: The means and methods for construction of the “N” Street Bridge shall be determined by the Contractor. Top down construction, which is the method that was used for the “O” Street, “P” Street and “Q” Street Bridge construction, built the bridges on grade with the channel excavation to follow as part of the COE Channel Phase 3 Project. This is an acceptable construction method for the “N” Street Bridge. The plans as originally developed for the “N” Street Bridge were based upon construction occurring after the channel has been excavated.

This allowed JAVA the flexibility of completing the bridge construction after the completion of the COE Channel Phase 3 Project or to incorporate the “N” Street Bridge plans into the Channel Phase 3 Project.

If the Contractor elects to utilize top down construction, the following contract requirements apply to this work in addition to all other requirements outlined in the COE Channel Phase 3 Specifications for the “N” Street Bridge Construction. The Contractor shall provide additional information regarding the top down construction as stated below:

A smooth faced finish shall be provided at the bottom of the bridge slab that is to be stained as stipulated in the Antelope Valley “N” Street Bridge Section for “Concrete Coating Surface Preparation”. These requirements are included with the COE Channel Phase 3 Specifications.

The Contractor shall construct the reinforced concrete infill at the bridge bents in accordance with the requirements outlined in the Antelope Valley “O”, “P” and “Q” Street Bent Encasement Specifications of the COE Channel Phase 3 Project Specifications.

The Contractor shall submit to the Contracting Officer for review and approval, the locations of all proposed construction joints between the superstructure and substructure components to be completed after excavation of the channel; modifications to the reinforcing steel at the bents that is required to accommodate the top down construction; the limits of the reinforced concrete infill construction at the bents that will be completed following channel excavation; and the forming method to be used to meet the concrete finish requirements at the bottom of the slab.

Question 3 The Wier low flow channel structure shown on G6.31 and Sheet G5.5 of the contract drawings – is this structure subsidiary to the Wier structure or is it subsidiary to the Labyrinth Wier structure or is it subsidiary to the low flow channel bid item?

Response: The weir low flow channel is a pilot channel to the sluice gate in the labyrinth weir which is not subsidiary to items 29-Concrete Low Flow Channel or 33-Labyrinth Weir. Major items included in the construction of the weir low flow channel are 6-Excavtion, 27-Crushed Stone, and 31-Cellular Concrete Mattress.