amd 0009.pdf

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

Solicitation No. W912HN-08-B-0021, Indefinite Delivery Indefinite Quantity Contract for Maintenance of Dredged Material Containment Areas for Savannah and Brunsw ick Harbor, Georgia.

See Page 2

1. CONTRACT ID CODE PAGE OF PAGES

J 1 7

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

16C. DATE SIGNED

BY 25-Feb-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 W912HN-08-B-0021

X 9B. DATED (SEE ITEM 11)

07-Jan-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 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

24-Feb-2009

CODE

US ARMY CORPS OF ENGINEERS

100 WEST OGLETHORPE AVE.

SAVANNAH GA 31401-3640

W912HN 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912HN-08-B-0021

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

Solicitation No. W912HN-08-B-0021, Indefinite Delivery Indefinite Quantity Contract for Maintenance of Dredged Material Containment Areas for Savannah and Brunswick Harbor, Georgia.

The required response date/time has changed to 3 March 2009 at 2:00 PM.

SECTION 00010 - SOLICITATION CONTRACT FORM is changed as follows:

CLIN 0024

The CLIN description has changed to: Furnish all Labor, Material, and Equipment for Clearing Interior of Disposal Areas - Complete (Base Period)

CLIN 0025

The CLIN description has changed to: Furnish all Labor, Material, and Equipment for Clearing, Grubbing, and Burning of Interior of Disposal Areas- Complete (Base Period)

CLIN 0177

The pricing detail quantity has decreased by 400.00 from 500.00 to 100.00.

CLIN 0178

The pricing detail quantity has increased by 20.00 from 80.00 to 100.00.

CLIN 0278

The pricing detail quantity has decreased by 400.00 from 500.00 to 100.00.

SECTION 00800 - SPECIAL CONTRACT REQUIREMENTS

The following have been modified:

52.236-4 PHYSICAL DATA (APR 1984)

PHYSICAL DATA SAVANNAH HARBOR (APR 1984)

Data and information furnished or referred to below is for the Contractor's information. The Government shall not be responsible for any interpretation of or conclusion drawn from the data or information by the Contractor.

(a) Physical Conditions. The physical conditions indicated on the drawings and in the specifications are the result of the site investigations by surveys and soundings. Contractors are strongly encouraged to visit the work site and determine for themselves the characteristics of the material and the extent of the work performed.

(b) Weather Conditions.

(1) The annual normal rainfall (1950-90) at Savannah, Georgia, Municipal Airport, 5 miles west of the site, is 49.70 inches. (Average Annual 1961-90: 48.30 inches.)

(A) Record (40 years) Maximum Monthly – 20.1 inches July 1964

(B) Record (40 years) Minimum Monthly -- 0.02 inch October 1963

(C) Record (40 years) Maximum 24 Hour – 7.04 inches August 1971

Normally about 25 inches of rain falls during the thunderstorm season of 15 June through 15 September. The remainder of the annual rainfall, produced principally by squall-line and frontal showers, is spread over 9 months with a minor peak in March. Considerable periods of fair, mild weather are experienced in October, November, April, and to a less extent, in May. Snow is a rarity and even a trace does not occur on an average of once a year. The greatest recorded fall was

3.6 inches in February 1968. Severe tropical storms affect this area about once in 10 years. Rainfall from these storms constitutes our heaviest sustained precipitation. Instances of this are the 22.79 inches in August 1898, and 22.88 inches in September 1924, most of which was from tropical storms, (1950-85) 20.10 inches in July 1964.

(2) The average normal monthly temperature at Savannah, Georgia, (1950-90) is 66.8 degrees F. with seasonal averages as follows:

Season Degrees Fahrenheit

Winter 51 Spring 66 Summer 81 Fall 68

Extreme temperatures are as follows (normals based on 1951-80):

(A) Normal Daily Maximums ------ 105 degrees F. July 1986 (Normal maximum 90.8)

84 degrees F. January 1957 (Normal maximum 60.3)

(B) Normal Daily Maximum 76.1 degrees F.

(C) Daily Minimums ------ 3 degrees F. January 1985 (Normal minimum 37.9)

61 degrees F. July 1972 (Normal minimum 71.5)

(D) Average Normal Daily Minimum 55.1 degrees F.

Average Normal Daily Maximum 76.7 degrees F.

(E) Record (40 years) Maximum -- 105 degrees F. July 1986

(F) Record (40 years) Minimum -- 3 degrees F. January 1985

(3) The annual average wind speed, for the past 40 years of record, is 7.9 mph, southwest, with the highest monthly mean occurring in February (NE) and March (WNW) at 9.2 mph, and the lowest monthly mean in August at 6.6 mph, southwest. Extreme winds (fastest 1 minute value) vary from 46 mph west in March 1981 to 68 mph southwest in May 1984. Weather Bureau records for Savannah, Georgia, giver the following data:

Partly Thunder- Dense (1948-90) Clear Cloudy Cloudy storms Fog* Years of Record 42 42 42 42 42

Number Days per Year 116 124 125 52 44

*NOTE: Heavy fog, visibility 1/4 mile or less.

Temp. Degrees F. Days per Year Years of Record 90 degrees and above 68 26 32 degrees and below 30 26 Percent of Possible Sunshine 62 40

(c) Transportation Facilities. Railway facilities are available at Savannah, Georgia. Areas of work are accessible by barge through the Atlantic Intracoastal Waterway and the Savannah Harbor.

(d) Location. The location of the work is within the limits of disposal areas 2A in Chatham County, Georgia, and 12 A&B, 13 A&B, 14 A&B, and Jones/Oysterbed Island in Jasper County, SC. Maintenance of all bird islands, including the offshore bird island 2 miles east of Jones/Oysterbed Island, is also included in the scope of this work.

(e) Subsurface Investigations: No subsurface investigations (drilling or core boring) have been performed for this work.

(A) The Contractor shall promptly, and before the conditions are disturbed, give a written notice, within 3 days, to the Contracting Officer of (1) subsurface or latent physical conditions at the site which differ materially from those indicated in this contract, or (2) unknown physical conditions at the site, of an unusual nature, which differ materially from those ordinarily encountered and generally recognized as inherent in work of the character provided for in the contract.

(B) The Contracting Officer shall investigate the site conditions promptly after receiving the notice. If the conditions do materially so differ and cause an increase or decrease in the Contractor’s cost of, or the time required for, performing any part of the work under this contract, whether or not changed as a result of the conditions, an equitable adjustment shall be made under this clause and the contract modified in writing accordingly.

(C) No request by the Contractor for an equitable adjustment to the contract under this clause shall be allowed, unless the Contractor has given the written notice required; provided, that the time prescribed in (i)(A) above for giving written notice may be extended by the Contracting Officer.

(D) No request by the Contractor for an equitable adjustment to the contract for differing site conditions shall be allowed if made after final payment under this contract. (FAR 52.236-2 DIFFERING SITE CONDITIONS.)

(E) The Contractor acknowledges that he has taken steps reasonably necessary to ascertain the nature and location of the work, and that he has investigated and satisfied himself as to the general and local conditions which can affect the work or its cost, including but not limited to (1) conditions bearing upon transportation, disposal, handling, and storage of materials; (2) the availability of labor, water, electric power, and roads; (3) uncertainties of weather, river stages, tides, or similar physical conditions at the site; (4) the conformation and conditions of the ground; and (5) the character of equipment and facilities needed preliminary to and during work performance. The Contractor also acknowledges that he has satisfied himself as to the character, quality, and quantity of surface and subsurface materials or obstacles to be encountered insofar as this information is reasonably ascertainable from an inspection of the site, including all exploratory work done by the Government, as well as from the drawings and specifications made a part of this contract.

Any failure of the Contractor to take the actions described and acknowledged in this paragraph will not relieve the Contractor from responsibility for estimating properly the difficulty and cost of successfully performing the work, or for proceeding to successfully perform the work without additional expense to the Government.

(F) The Government assumes no responsibility for any conclusions or interpretations made by the Contractor based on the information made available by the Government. Nor does the Government assume responsibility for any understanding reached or representation made concerning conditions which can affect the work by any of its officers or agents before the execution of this contract, unless that understanding or representation is expressly stated in this contract

(FAR 52.236-3 – SITE INVESTIGATION AND CONDITIONS AFFECTING THE WORK).

PHYSICAL DATA BRUNSWICK HARBOR (APR 1984) (FAR 52.236-4)

Data and information furnished or referred to below is for the Contractor's information. The Government shall not be responsible for any interpretation of or conclusion drawn from the data or information by the Contractor.

(a) Physical Conditions. The physical conditions indicated on the drawings and in the specifications are the result of the site investigations by surveys and soundings. Contractors are strongly encouraged to visit the work site and determine for themselves the characteristics of the material and the extent of the work performed.

(b) Weather Conditions. The project area has long, warm summers and short, mild winters. The coastal portion is slightly warmer in winter and receives more rain in summer and fall than interior areas, but rainfall is usually plentiful throughout the basin. Snowfall is extremely rare.

(1) The annual normal rainfall at Brunswick, Georgia, is 53.32 inches:

(A) Record (63 years) Maximum Monthly -- 22.86 inches September 1953

(B) Record (62 years) Minimum Monthly -- 0.09 inch November and December 1956

(C) Record (67 years) Maximum 24 Hour -- 19.1 inches August 1911 (at St. George)

Normally about 29 inches of rain falls during the thunderstorm season of 15 June through 15 September (averaging 6.5 inches per month from July through September). The remainder of the annual rainfall, produced principally by squall-line and frontal showers, is spread over 9 months. Considerable periods of fair, mild weather are experienced in October, November, April, and to a less extent, in May. Snow is a rarity and even a trace does not occur on an average of once a year. Severe tropical storms affect this area about once in 10 years. Rainfall from these storms constitutes our heaviest sustained precipitation. Instances of this are the 22.86 inches in September 1953, and 16.37 inches in August 1953, most of which was from tropical storms.

(2) The average normal monthly temperature at Brunswick, Georgia, is 69.2 degrees F. with seasonal averages as follows:

Season Degrees Fahrenheit

Winter 55 to 61 Spring 68 to 81 Summer 79 to 82 Fall 56 to 71

Extreme temperatures are as follows:

(A) Normal Daily Maximums ------ 91.8 degrees F. August

64.5 degrees F. December

(B) Average Normal Monthly Maximum ----------------- 82.4 degrees F. July

(C) Normal Daily Minimums ------ 43.5 degrees F. January

73.5 degrees F. July

(D) Average Normal Monthly Minimum -----------------55.4 degrees F. January

(E) Record (58 years) Maximum -- 104 degrees F. July 1954

(F) Record (67 years) Minimum -- 11 degrees F. December 1983

The average daily temperature ranges from 54 degrees F. in January to 82 degrees F. in July. In January, the average daytime minimum and maximum temperatures range from 44 degrees F. to 64 degrees F., and in July from 72 degrees F.

to 92 degrees F. During an average year, the temperature drops below 32 degrees F. about 20 times in the northwest area and about 6 times along the coast. Ninety degrees is exceeded in an average year about 70 times along the coast and slightly more than 100 times in the northwest portion of the area. The frost-free growing season of the area ranges from about 250 days near Douglas, Georgia, to 300 days along the coast.

The average relative humidity at 1 p.m. is 53 percent and monthly averages range from a low of 46 percent in April to a high of 58 percent for the months of September and December.

(3) Wind and visibility at Brunswick are similar to Savannah, Georgia, where the annual average wind speed, for the past 37 years of record, is 7.9 mph, southwest, with the highest monthly mean occurring in March at 9.2 mph, west-northwest, and the lowest monthly mean in August at 6.6 mph, southwest. Extreme winds (fastest 1 minute values) vary from 46 mph west in March 1981 to 68 mph east in May 1984. Weather Bureau records for Savannah, Georgia, give the following data:

Partly Thunder- Dense Clear Cloudy Cloudy storms Fog*

Years of Record 37 37 37 37 37

Number Days per Year 103 110 152 62 39

*NOTE: Heavy fog, visibility 1/4 mile or less.

The Brunswick area averages 9 hours of sunshine a day in the summer and 5 to 6 hours a day in the winter. Summer rainfall is characterized by brief showers. There are few completely cloudy days.

(c) Transportation Facilities. Railway facilities are available at Brunswick, Georgia. Areas of work are accessible by barge through the Atlantic Intracoastal Waterway and the Brunswick Harbor.

(d) Location. The location of the work is within the limits of Andrews Island Disposal Area in Glynn County, Georgia and the offshore bird island in Glynn County, Brunswick Harbor, Georgia.

(e) Subsurface Investigations: No subsurface investigations (drilling or core boring) have been performed for this work.

(A) The Contractor shall promptly, and before the conditions are disturbed, give a written notice, within 3 days, to the Contracting Officer of (1) subsurface or latent physical conditions at the site which differ materially from those indicated in this contract, or (2) unknown physical conditions at the site, of an unusual nature, which differ materially from those ordinarily encountered and generally recognized as inherent in work of the character provided for in the contract.

(B) The Contracting Officer shall investigate the site conditions promptly after receiving the notice. If the conditions do materially so differ and cause an increase or decrease in the Contractor’s cost of, or the time required for, performing any part of the work under this contract, whether or not changed as a result of the conditions, an equitable adjustment shall be made under this clause and the contract modified in writing accordingly.

(C) No request by the Contractor for an equitable adjustment to the contract under this clause shall be allowed, unless the Contractor has given the written notice required; provided, that the time prescribed in (i)(A) above for giving written notice may be extended by the Contracting Officer.

(D) No request by the Contractor for an equitable adjustment to the contract for differing site conditions shall be allowed if made after final payment under this contract. (FAR 52.236-2 DIFFERING SITE CONDITIONS.)

(E) The Contractor acknowledges that he has taken steps reasonably necessary to ascertain the nature and location of the work, and that he has investigated and satisfied himself as to the general and local conditions which can affect the work or its cost, including but not limited to (1) conditions bearing upon transportation, disposal, handling, and storage of materials; (2) the availability of labor, water, electric power, and roads; (3) uncertainties of weather, river stages, tides, or similar physical conditions at the site; (4) the conformation and conditions of the ground; and (5) the character of equipment and facilities needed preliminary to and during work performance. The Contractor also acknowledges that he has satisfied himself as to the character, quality, and quantity of surface and subsurface materials or obstacles to be encountered insofar as this information is reasonably ascertainable from an inspection of the site, including all exploratory work done by the Government, as well as from the drawings and specifications made a part of this contract.

Any failure of the Contractor to take the actions described and acknowledged in this paragraph will not relieve the Contractor from responsibility for estimating properly the difficulty and cost of successfully performing the work, or for proceeding to successfully perform the work without additional expense to the Government.

(F) The Government assumes no responsibility for any conclusions or interpretations made by the Contractor based on the information made available by the Government. Nor does the Government assume responsibility for any understanding reached or representation made concerning conditions which can affect the work by any of its officers or agents before the execution of this contract, unless that understanding or representation is expressly stated in this contract

(FAR 52.236-3 – SITE INVESTIGATION AND CONDITIONS AFFECTING THE WORK).

(End of clause)

SECTION 02 01 40 - MAINTENANCE

(1) Delete existing Table of Contents (Page 1 and Page 2) in their entirety and replace with enclosed revised Pages.

(2) Delete existing Page 8 through Page 22 in their entirety and replace with enclosed revised Page 8 through Page 23.

NOTE:

Text that is added or revised by this amendment is replaced in its entirety and underlined and/or printed in bold and/or stamped appropriately.

The text changes may have necessitated reformatting of subsequent text or pages. If this is the case, those pages have also been issued as amended pages but are not underlined or bold text.

(End of Summary of Changes)

Encls As stated

Dike & Disposal Area Maintenance W912HN-08-B-0021 Savannah & Brunswick Harbors, Georgia

SECTION TABLE OF CONTENTS

DIVISION 02 - EXISTING CONDITIONS

SECTION 02 01 40

MAINTENANCE

PART 1 GENERAL

1.1 SUMMARY

1.2 WORK EXAMPLES

1.3 CONCURRENT USE OF CONTAINMENT AND MAINTENANCE AREAS

1.4 CONSTRUCTION PRACTICES AND QUALITY OF MATERIALS

1.5 REFERENCES

1.6 SUBMITTALS

1.7 HOURS OF WORK

1.8 ACCESS TO WORK SITES

1.8.1 Containment Areas

1.8.2 Bird Islands

1.9 MOBILIZATION AND DEMOBILIZATION

1.10 MEASUREMENT AND PAYMENT

1.10.1 General

1.10.2 Mobilization - Demobilization

1.10.3 Excavations

1.10.4 Measurement - Hourly Items

1.10.5 Measurement - Weirs

1.10.6 Measurement - Outfall Pipes

1.10.7 Measurement - Other Items

1.10.8 Payment

1.10.9 Reporting

PART 2 PRODUCTS

2.1 STEEL, NEW

2.2 WOOD

2.3 LADDERS

2.4 SAFETY CLIMBING EQUIPMENT

2.5 FIBERGLASS GRATING

2.6 CONCRETE

2.7 POLYETHYLENE

2.7.1 Pipes

2.7.2 Anti-Seepage Collars

2.7.3 Weir Risers

2.7.4 Weir Riser Extensions

2.8 JOINTS

2.8.1 Fusion Joining

2.8.2 Mechanical Joining

PART 3 EXECUTION

3.1 MOWING

3.1.1 General

3.1.2 Equipment

SECTION 02 01 40 Page 1 (Revised/Added by Amendment No. 0009)

3.1.3 Order of Work

3.1.4 Extent of Mowing

3.1.5 Estimated Quantity

3.2 REPAIR OF DIKES

3.2.1 General

3.2.2 Erosion Control

3.3 GRADING

3.4 CLEARING, GRUBBING, AND BURNING

3.5 CLEARING REQUIREMENTS

3.6 DITCHING

3.7 APPLICATION OF HERBICIDES AND PESTICIDES

3.7.1 Bird Islands

3.7.2 Dikes, Roads, Road Shoulders, Pipeline Ramps, Ramps leading to the Underdrain Stations, and Outfall Pipes

3.7.3 Dike Interiors

3.8 SILT FENCE

3.9 WEIR, CATWALK, OUTFALL PIPE REPLACEMENT/REPAIR

3.9.1 General

3.9.2 Weir Components

3.9.3 Removal of Existing Weirs

3.9.4 Fabrication

3.9.4.1 Steel

3.9.4.2 Stoplogs

3.9.4.3 Pipe Stub

3.9.4.4 Pipe Joints

3.9.4.5 Flange Faces

3.9.5 Installation General

3.9.6 Outfall Pipe Installation

3.9.7 Weir and Catwalk Maintenance

3.9.7.1 Joists

3.9.7.2 Metals

3.9.7.3 Weir Boards

3.9.8 Acceptance

3.10 WELDING

3.11 SUMPS

3.12 MINIMUM PLANT

3.12.1 General

3.12.2 Excavators and Dozers

3.12.3 Mowers

3.12.4 Dump Truck

3.12.5 Front-end Loader/Backhoe

3.12.6 Motor Grader

3.12.7 Self-Loading Pan

3.12.8 Tree Cutter

3.12.9 Welding Machine

3.12.10 Tractor/Disc Harrow

3.12.11 Pontoon Rotary Ditcher with Winch Truck

3.12.12 Miscellaneous Tools

3.13 BIRD ISLAND MAINTENANCE

-- End of Section Table of Contents --

SECTION 02 01 40 Page 2 complete the work described in each negotiated task order.

Operation/Activity Bid Items Unit of Measure

Mowing 009-0011,0110-0112,0211-0213 acre Stripping 0023, 0124, 0225 acre Clearing 0024, 0125, 0226, acre Clearing and Grubbing 0024-0025,0125-0126,0226-0227 acre Grassing 0026-0028,0127-0129,0228-0230 acre Silt Fence Installation 0029-0030, 0130-0131,0231-0232 linear foot Erosion Control 0031-0034,0036-0039, 0132-0135,0137-0140, 0233-0236,0238-0241 ton Grout 0035, 0136, 0237 cubic yard Weir Stoplogs 0040, 0141, 0242 square foot Repair Weir Riser 0041, 0142, 0243 square foot Metal Catwalk Repair 0042, 0143, 0244 linear foot Metal Catwalk Extensions 0043, 0144, 0245 linear foot New Weir, Complete 0044, 0145, 0246 each Weir Riser Extensions 0045, 0146, 0247 linear foot Weir Catwalk 0046, 0147, 0248 linear foot Vinyl Sheetpiles 0047, 0148, 0249 square foot Safety Climb 0048, 0149, 0250 each Weir Foundation 0049, 0150, 0251 each Flange and Galvanized Ring 0050, 0151, 0252 each Elbow with Flanges and Galvanized Ring 0051, 0152, 0253 each Remove and Replace 48" HDPE Outfall Pipes 0052, 0153, 0254 linear foot Unstable Material Removal/Replacement 0054, 0155, 0256 cubic yard Burning 0056, 0157, 0258 acre Forced Air Burner/ Air Curtain 0057, 0158, 0259 day 48" Polyethylene Pipe 0058, 0159, 0260 linear foot 30" Polyethylene Pipe 0059, 0160, 0261 linear foot 24" Polyethylene Pipe 0060, 0161, 0262 linear foot 18" Polyethylene Pipe 0061, 0162, 0263 linear foot 12" Polyethylene Pipe 0062, 0163, 0264 linear foot 48" Pipe Fusing 0063, 0164, 0265 each 30" Pipe Fusing 0064, 0165, 0266 each 24" Pipe Fusing 0065, 0166, 0267 each 18" Pipe Fusing 0066, 0167, 0268 each 12" Pipe Fusing 0067, 0168, 0269 each Geotextile Installation 0068, 0169, 0270 square yard Lime Application 0069, 0170, 0271 ton Fertilizer Application 0070, 0171, 0272 ton Herbicide/Pesticide Application 0071-0076,0172-0177, 0273-278 acre, pound, ton Barge 0084,0185, 0286 day Bird Island Maintenance 0098-0101,0199-0202 0300-0303 acre

1.10.8 Payment

a. Payment for Bid Item Nos. 0069, 0170, 0271, Lime; Bid Item Nos.

0070, 0171, 0272, Fertilizer; and Bid Item Nos. 0071-0076, 0172-0177, SECTION 02 01 40 Page 8

0273-278, Herbicide/Pesticide Application shall include all costs for the equipment, labor, materials, supplies, etc., to purchase, deliver, and apply the product.

b. No separate payment shall be made for tools and hand-held equipment including, but is not limited to shovels, rakes, chainsaws, axes, bush hooks, machetes, power hand tamps, etc. Costs for these items considered incidental.

1.10.9 Reporting

The Contractor shall submit hours worked per month on the contract to the COR no later than the fifth day of the next month for labor exposure report.

PART 2 PRODUCTS

2.1 STEEL, NEW

All corrugated steel, structural steel, metal hardware, (nuts, bolts, washers, etc.) used in the new riser structure, catwalks, and catwalk supports shall be thoroughly cleaned and then hot-dipped galvanized in accordance with the applicable sections of ASTM A 760/A 760M, ASTM A 153/A 153M, and ASTM A 123/A 123M. All necessary repairs to galvanized surfaces shall be made using two coats of a paint conforming to CID A-A-3132. The Contractor shall submit to the Contracting Officer certificates or copies in triplicate stating the thickness of the coating system used.

2.2 WOOD

All lumber used for the weir stoplogs and timber piles shall be of dense select structural southern pine lumber and pressure treated with either Ammoniacal Copper Arsenate (ACA) or Chromated Copper Arsenate (CCA) and shall conform to AWPA C18. A certificate from any approved nationally recognized testing organization, adequately equipped and competent to perform such services, attesting the lumber is dense select structural southern pine and meets or exceeds AWPA C18 shall be delivered to the Contracting Office prior to installing the stoplogs in the spillway riser structure. Instead of the certificate, as evidence of conformance to this specification, the treated material shall be legibly marked in accordance with AWPB MLP 80. Pilings shall be the size as shown on the contract drawings.

2.3 LADDERS

Ladders will be constructed as shown on the drawing labeled "Drop Inlet Sluice Details." The ladders shall include the installation of a control life safety support bar in accordance with OSHA 1910.7.

2.4 SAFETY CLIMBING EQUIPMENT

Safety climbing equipment shall be provided for weir ladders. All equipment shall comply with FS RR-S-001301. The main support elements (carrier and means of attachment to structure) shall be galvanized.

2.5 FIBERGLASS GRATING

The grating shall be molded from a fiberglass-reinforced plastic made from a thermosetting resin. The resin systems shall be a vinyl-ester resin

SECTION 02 01 40 Page 9 system with a tested flame spread of 25 or less based on ASTM E 84. The glass content shall be a minimum of 25 percent and a maximum of 35 percent by weight based on ASTM D 2584 for maximum sunlight and chemical resistance. The bearing bars and cross bars shall be molded simultaneously into a one-piece construction with smooth mold surfaces. The grating shall have square bar patterns with 1-1/2 inch by 1-1/2 inch spacing. The grating shall be 1 inch thick and capable of supporting a 500-pound load centered between supports placed 42 inches apart with a deflection of 0.35 inch or less. Grating shall have a minimum live load capacity of 200 psf for all spans. Metal grating meeting strength requirements and approval of COR may be substituted.

2.6 CONCRETE

Concrete cement shall be Portland cement ASTM C 150, Type II. Aggregates shall comply with ASTM C 33. Concrete shall conform to ASTM C 94. The Contractor shall ensure that the concrete is properly consolidated, finished, protected and cured. Proportions of material in the concrete mix shall be the responsibility of the Contractor. The Contractor shall submit certification to the Contracting Officer that the materials used and that the proportions selected will produce concrete of a minimum strength of 3,000 psi at 27 days.

2.7 POLYETHYLENE

2.7.1 Pipes

All pipe shall be made from polyethylene resin compound qualified as Type III, Category 5, Class C, Grade P34 as specified in ASTM D 1284 except the density of the base resin shall be within the limits of 0.941 to 0.943 as determined by ASTM D 792, Method B. This material shall have a hydrostatic design basis of not less than 1350 psi when tested in accordance with ASTM D 2837. The raw material shall contain carbon-black and an effective antioxidant as required by CASB 137.1. All materials used in fabrication of the pipe shall be new. Wall thickness shall be in accordance with manufacturer's recommendations. The pipe shall have a standard dimension ratio (SDR) of 26. The Contractor shall obtain certification from the manufacturer stating that the pipe meets all requirements specified and submit the certification to the Contracting Officer.

2.7.2 Anti-Seepage Collars

High-density polyethylene collars shall be joined to the pipe as indicated on plans by mechanical flanges.

2.7.3 Weir Risers

The Contractor shall install a polyethylene weir riser and pipe stub. The Contractor shall submit shop drawings and specifications for the manufacture and installation of polyethylene risers to the Contracting Officer for review and approval prior to ordering the riser from the manufacturer. The shop drawings shall also include details of the connection of the catwalk to the riser. Details of a polyethylene weir riser and pipe stub are included in the contract drawings.

2.7.4 Weir Riser Extensions

The Contractor shall install a polyethylene weir riser extension to existing weir riser. The Contractor shall submit shop drawings and

SECTION 02 01 40 Page 10 specifications for the manufacture and installation of polyethylene riser extensions to the Contracting Officer for review and approval prior to ordering from the manufacturer. The shop drawings shall also include details of the connection of the riser, support framework, ladders, climbing equipment, and catwalks and catwalk platforms to the completed riser assembly.

2.8 JOINTS

2.8.1 Fusion Joining

The plastic pipe shall be connected by the thermal butt-fusion method which consists of melting the aligned faces of the pipe ends in a suitable apparatus and pressing them together under controlled pressure. Skilled and certified workers having previous experience in joint fusion shall perform this work.

2.8.2 Mechanical Joining

Plastic pipe shall be joined to metal pipe stub or other plastic pipes where indicated on the plans by mechanical flanges. Metal flanges shall be hot dipped galvanized.

Anti-seepage Collars: High-density polyethylene collars shall be joined to the pipe as indicated on plans by mechanical flanges.

PART 3 EXECUTION

3.1 MOWING

3.1.1 General

a. The dike system consists of approximately 42 miles of dikes at Savannah Harbor and 5 miles of dike at Andrews Island, with additional frontage roads. The areas to be mowed have both variable widths and slopes. In order to fulfill the requirement of this contract, specialized equipment must be used. Mowing the tops of the dikes shall be accomplished using a mowing machine pulled behind a tractor. Mowing all other areas, dike slopes and wet areas, shall be accomplished using a boom mower and/or batwing mower. The Contractor will furnish all labor and special equipment as required to accomplish this. All equipment used in the operation of mowing shall be adequate to produce the desired results.

b. Areas of mowing are to be cut a maximum of 5 inches above the ground except in areas where Love grass is dominant, where mowing shall be cut to a maximum of 10 inches above the ground. The Contractor shall keep the mowers in proper adjustment at all times in order to eliminate destroying the turf and/or leaving the vegetation above 5 inches. The Contractor shall ensure that mower blades are kept sharp at all times and all mowing equipment is in top running order. The vegetation shall be left in a cleanly cut condition. If the areas are not mowed satisfactorily on the first pass as a result of failure by the Contractor to maintain sharp blades, the Contractor will be directed to re-mow the area at no additional cost to the Government.

c. The Contractor shall perform all mowing operations in a manner which will prevent any spillage or leakage of fuel, oil, or any material that may contaminate the area. The Contractor shall clean up any

SECTION 02 01 40 Page 11 contamination of the area caused during mowing.

d. At all weir locations, a 16-foot width access path shall be mowed or cut to the outlet end of the weir pipe. The access path to each weir catwalk shall be mowed the same as the dike. The cost for this will be included in the mowing of the containment area.

3.1.2 Equipment

The Contractor shall use equipment that will not destroy the integrity of the dike. Equipment used shall not be permitted to operate on slopes that are too steep or sandy and that will cause rutting of slopes. The Contractor shall restore all damage to the top of dikes, slopes, shoulders, or roads caused by the Contractor, to their original condition. On slopes that are too steep for equipment, a boom mower will be required. Also, there are areas within the limits of mowing that are wet and/or pond water for extended periods of time which will require use of a boom mower.

3.1.3 Order of Work

Order of work shall be determined by the Contracting Officer. Mowing of the top of dikes, slopes, underdrain ramps, access ramps, access shoulders, etc. shall be completed and accepted per containment area unless otherwise directed by the Contracting Officer.

3.1.4 Extent of Mowing

a. Mowing shall consist of mowing of all dikes, dike slopes, access ramps, under drain station ramps, weir access ramps, weir outfall accessories, etc. In accordance with the August 1996 U.S. Corps of Engineers Environmental Impact Study, the dike roads and 5' down the inside and outside slopes may be mowed during the non-mowing season defined as April 1 to July 15. Mowing season is defined as July 16 to March 31. Grass will be taller after this period of time and will require more time to be mowed. Avoid all bird nests at all times.

b. In addition to the dikes, the Contractor shall be required to mow the access road along the front of Areas 12A and 14A and an open area adjacent to the tide gate structure on the South Carolina side of the Back River. This mowing will consist of mowing the shoulders and back slope approximately 10 feet on each side of the road. Inside of curves will be 15 feet.

c. Area 2A, located on Hutchinson Island, may be accessed by water or land. To access Area 2A by land requires crossing property owned by International Paper Company. Permission to cross International Paper Company's property will be the responsibility of the Contractor. The Government will assume no responsibility nor arrange for the Contractor to have access to this disposal area across the property owned by International Paper Company. The Contractor may use a barge at his own expense.

d. The Contractor may be required to mow an area at the outside toe of the dike and/or all or portions of the interior of any of the disposal areas. Estimated quantities are shown in Table 1.

3.1.5 Estimated Quantity

The location and estimated acreage for mowing the top of dike and the

SECTION 02 01 40 Page 12 interior and exterior slopes is listed below. The Contractor may be required to mow the areas multiple times during each contract period.

DIKE MAINTENANCE SURFACE AREAS - 30 AUG 2008

Location (Perimeter in ft)

Exterior Slope (acres)

Top

(acres)

Interior Slope (acres)

Interior

(acres)

Top+5ft I/O

(acres) Number of Weirs

Andrews Island (25,040)

40 12 18 740 69.6 5

Area 2A (23,395) Lower Access Roads (13,210)

54 7 22 240 14.0 3

Area 12A (29,000) Lower Access Road West (7,130) Lower Access Road North (8,320) Lower Road South/Front (10,000) Tide Gate Area

54 12

22 990 17.3 5

Area 12B (22,470) Lower Access Road North

18* 8

5 660 13.4 3

Area 13A (23,050) Lower access Road North (5,780)

22* 9

22 647 13.8 3

Area 13B (21,832) Lower Access Road North (10,100) Lower Road South/Front (5,610)

22* 8

15 520 13.0 5

Area 14A (24,500)

7 12 18 728 14.6 3

Area 14B (25,680)

27 9 12 725 15.3 4

Jones/Oysterbed (56,872)

44 20 40 890 33.9 8

Offshore Bird Island Savannah (2,550)

0 4 4 0

Offshore Bird Island Brunswick (3,522)

0 20 20 0

Totals 297 285 183 6,334 214.1 43

SECTION 02 01 40 Page 13

Total 765 acres of top, interior and exterior.

* Includes ramps to underdrain control stations.

3.2 REPAIR OF DIKES

3.2.1 General

Settled and/or eroded areas of the dikes, including the tops and both side slopes, shall be repaired with satisfactory materials borrowed from the approved locations within the disposal areas. Satisfactory materials shall consist of SW, SP, SM, SC, CL, CH, ML, MH and OH materials as classified in ASTM D 2487. The Contractor shall haul the borrow material to the eroded sites and spread it uniformly in the area(s) designated for repair. The material shall be spread and compacted with equipment by passing over it a minimum of five times. All material determined by the Contracting Officer to be too wet or too soft to provide a stable compacted fill will be classified as unsatisfactory regardless of classification. The Contracting Officer shall approve satisfactory material before the repairs are made.

Stone larger than 6 inches in diameter shall not be permitted in satisfactory material for erosion repairs. All eroded material deposited at the bottom of the dikes shall be removed to the extent practical and reused to match the original section. The borrow materials may be obtained from any disposal area as approved by the Contracting Officer. The Contractor shall conduct his borrow operations to the extent practical which will allow surface water to drain from the borrow location to the weirs. All repaired areas of the dike shall be grassed and mulched in accordance with SECTION: GRASSING (SEEDING).

3.2.2 Erosion Control

Areas of the dikes and adjacent bank that have been eroded as a result of wave action may require rock placement to prevent further erosion. Dikes will be repaired as specified in paragraph REPAIR OF DIKES, subparagraph General with the exception of grassing and mulching in areas that require rock placement. Rock shall be placed as shown on Plate D-1 or as directed by the Contracting Officer. The Contractor shall be responsible for maintaining haul roads at his own expense during the period of hauling operations. The Contractor is responsible for returning all roads utilized for hauling to their original condition and elevations that existed prior to hauling operations upon completion of the work unless otherwise directed by the government. The government is not responsible for lost time in hauling operations due to the Contractor's negligence in maintaining roads in a passable condition.

3.3 GRADING

The Contractor shall be required to use a motor grader to smooth and/or grade the top of the dikes and the access road from the disposal area entrance gate near US Highway 17 to the Screven Ferry Road dredge laydown area. The table in Subparagraph Estimated Quantity lists the perimeter of each disposal area. Additional grading may be required at other locations providing access to the existing dredged material disposal areas.

3.4 CLEARING, GRUBBING, AND BURNING

The Contractor shall be required to perform clearing and grubbing operations. It is anticipated that this work will be performed using a dozer, excavator, long-reach excavator, stout bush hog (tree cutter), dump

SECTION 02 01 40 Page 14 truck, or any combination thereof. Grubbing, when specified in the task order, shall be performed with the dozer using a root rake. The cleared and grubbed material shall be placed at the direction of the Contracting Officer's Representative within the disposal area designated for clearing and grubbing and shall be burned. All cleared and grubbed materials shall be burned to the fullest extent possible and buried within the disposal area. The Contractor shall be responsible for any damage to life and/or property resulting from fires that are started by his employees or as a result of his operations. The Contractor shall excavate a pit for burying the burned material, place the burned material in the pit, and cover the burned material with a minimum of two feet of cover. The Contractor shall ensure that excavation and burning operations do not damage underdrains in the disposal area. Any underdrains damaged as a result of the Contractor's negligence shall be repaired at no cost to the Government. The cover material shall be obtained from existing dredged material located adjacent to the disposal pit. The Contractor shall ensure that the cover is placed no higher than the elevations adjacent to the disposal pit. The Contractor shall be responsible for coordinating burning operations and for obtaining any and all permits for burning as may be required by Federal, State, and local government agencies prior to commencement of burning operations.

Suitable Air Curtain Burners / Destructors or trench Air Curtain burners shall be used unless specifically waived in writing by the COR and is permitted in accordance with Federal, State, and local regulation.

3.5 CLEARING REQUIREMENTS

Trees, roots, brush, and other vegetation in areas to be cleared shall be cut off flush with or below the original ground surface. Stumps larger than 2 inches in diameter shall be removed. After clearing, the ground surface shall be disced or harrowed to ensure any remaining vegetation is plowed below the ground surface. Materials cleared shall be located within the disposal area at the direction of the Contracting Officer's Representative. All cleared materials shall be burned to the fullest extent possible and buried within the disposal area. The contractor shall be responsible for coordinating burning operations and for obtaining any and all permits for burning as may be required by Federal, State, and local government agencies prior to commencement of burning operations. Suitable Air Curtain Burners / Destructors or trench Air Curtain burners shall be used unless specifically waived in writing by the COR and is permitted in accordance with Federal, State, and local regulation. Once the burned material is buried the Contractor shall ensure that the cover is placed no higher than the elevations adjacent to the disposal pit.

3.6 DITCHING

Ditching and dewatering operations will be conducted as directed by the Contracting Officer's Representative (COR) within the disposal areas shown on the drawings. Work will consist of removal of previously placed material in front of the weirs, excavation of sumps in front of each weir, and ditching of hydraulically placed dredged material inside the disposal area. Ditches shall be excavated around the inside perimeter and across the disposal areas. Existing material in the disposal area is recently deposited dredged material consisting primarily of silts, sand, and clay.

This material has been deposited since the aerial photographs were taken.

Mats will be required in areas. The construction of access ramps inside the dikes will be the Contractor's responsibility. Ditching shall be performed along the inside of the dike and at locations as directed by the COR. The excavator shall begin ditching as directed by the COR. To establish sumps, material shall be excavated from in front of all weirs in

SECTION 02 01 40 Page 15 the disposal areas and carefully deposited either further away from the weirs or on the lower 5 feet of the inside slope of the dike. Excavated material deposited in the interior of the disposal area shall be placed in such a manner as to allow surface runoff from the interior to flow to the ditches. The material shall be spread to prevent mounding unless directed otherwise by the Contracting Officer Representative. Care shall be taken not to remove any material from the adjacent dike or cause any damage to the dikes or weirs. Any damage caused by the Contractor to the dikes or weirs and adjacent structures shall be repaired at the Contractor's expense. The Contractor may be directed to make subsequent passes to deepen the sumps and ditches. In addition, excavated material may be carefully placed on the lower 5 feet of the inside slope of the dike.

Vegetation on the inside dike slope 5 feet above the inside elevation of the disposal area shall not be disturbed. Staging areas will be available to the Contractor near the disposal areas as directed by the COR which will be discussed at the preconstruction conference. Initial work will require the use of an excavator. When the interior of the disposal area becomes less wet, the COR may require a ditching machine for dewatering during operations. The Contractor may also be directed to perform ditching and ditch maintenance outside of the disposal areas. All ditches shall be excavated to drain to existing weirs and/or culverts. The depth and cross section of the ditches shall be specified in each task order awarded for ditching operations.

3.7 APPLICATION OF HERBICIDES AND PESTICIDES

The contractor shall be required to apply herbicides, including a pre-emergent, to control vegetation. The contractor shall demonstrate his plans have been reviewed and approved by a person possessing a Masters Degree in Weed Science and/or PHD in Turf Management. The location of the application and the application rate to be used shall be specified in the task order. The contractor shall strictly adhere to the manufacturer's warnings and recommendations in the application of herbicide according to local, state and Federal laws. The Contractor shall provide all equipment and supplies necessary to properly and safely apply the herbicides.

Herbiciding shall be performed on:

3.7.1 Bird Islands

Two bird nesting islands (1 to 2 acre each) exist in Areas 12A, 12B, 14A, 14B, and Jones/Oysterbed. Additional islands (two 1 to 2 acre in each area) are either being constructed or planned for construction in Area 13B. An offshore bird island of approximately 5 acres is located approximately 2 miles offshore of Jones/Oysterbed Island, Savannah Harbor.

An offshore bird island of approximately 20 acres is located in the Saint Simons Sound, approximate Station 15+500 along the Brunswick River, Brunswick Harbor. The Government desires that the bird islands remain free of vegetation. Vegetation shall be removed from sides and interior of the bird islands before and after each nesting season by clearing. Herbicides shall be applied twice a year to these areas during times when birds are not nesting on the islands. One herbicide application shall be accomplished during the month of September and the second application shall be accomplished between March 15 and April 7. The second application shall include a non-selective pre-emergents. Vegetation shall be completely removed from these areas between November 1 and February 1 by clearing.

Dead vegetation to be burned shall be piled at the toe of the islands and burned. Vegetation shall not be piled and burned on the crowns or sideslopes of the islands. The Contractor shall take care that spray does not drift from designated areas and shall strictly adhere to the

SECTION 02 01 40 Page 16 manufacturer's warnings and recommendations in the application of the herbicide. Aerial helicopter application of herbicide will be allowed.

The herbicide shall be approved by the EPA for aquatic use (Rodeo).

Scattered pebbles located on the sandy surface are to be preserved. Any fire ant mounds encountered on the nesting islands shall be treated with a chemical approved for fire ant control. The Contractor shall strictly adhere to the manufacturer's warnings and recommendations in the application of the fire ant control. Amdro (or equivalent) shall be broadcast at 1 lb/acre, with a soil temp of at least 60 degrees and air temp of at least 75 degrees) from mid-day to afternoon. Treat any mounds 2 weeks later with 2 tbsp/mound Orthene or equivalent. Cost for boat use to access bird islands for maintenance is considered incidental to the contract.

3.7.2 Dikes, Roads, Road Shoulders, Pipeline Ramps, Ramps leading to the Underdrain Stations, and Outfall Pipes

The Government requires that the dikes, roads, road shoulders, pipeline ramps, ramps leading to the underdrain stations and outfall pipes be herbicided with Rodeo.

The work area(s) are located adjacent to a Wildlife Sanctuary. Therefore, extremely precise control of herbicide placement is required to prevent damage to wildlife and wildlife habitat. Spray equipment that can evenly distribute low volumes…