W912QR20B0008-0002.pdf

W22W9K93099388

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 W912QR20B0008, Lease of Dredge Attendant Plant and On-Shore Disposal of Equipment for Channel Maintenance, Ohio River (RM 150-981) and Ohio River Pool Area of Tributaries, Cumberland River (RM 0.0-105) is hereby modif ied as follow s:

1. Bid Schedule Notes have been replaced in its entirety. Note 17 has been added.

2. Revised Wage Rates have been incorporated. All aplicable w age rates have been included w ith this amendment for pricing purposes.

3. The spec section has been replaced in its entirety. Section 35 20 23.33 has been revised to include the deletion of "SD-01,Preconstruction Submittals Dredge Plant Instrumentation Plan Revisions or Addendum; G CESAM-OP-J".

4. DFARS Clause 252.236-7004 has been added.

1. CONTRACT ID CODE PAGE OF PAGES

J 1 13

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

16C. DATE SIGNED

BY

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 W912QR20B0008

X 9B. DATED (SEE ITEM 11)

28-Feb-2020

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

X The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offer is extended, X 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

20-Mar-2020

CODE

U. S. ARMY ENGINEER DISTRICT, LOUISVILLE

600 DR. MARTIN LUTHER KING, JR. PLACE

ROOM 821

LOUISVILLE KY 40202-2239

W912QR 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912QR20B0008

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION SF 30 - BLOCK 14 CONTINUATION PAGE (SF 30)

The following have been added by full text:

WAGE RATES-AMDMT 0002

The following wage determinations may be used during the life of the contract and are included for identification and pricing purposes. Applicable wage rates will be issued with each task order. The bold wage determinations are the ones that have updated since the original solicitaiton was issued. The wage determinations are identified here, but the actual rates may be found at https://wdolhome.sam.gov/.

Wage Determination Numbers:

IL19, Modification 01, dated 10 January 2020 IN20200006, Modification 04, dated 21 February 2020 KY20200001, Modification 0, dated 03 January 2020 MO20200001, Modification 4, dated 13 March 2020 OH20200001, Modification 04, dated 20 March 2020 TN135, Modification 01, dated 24 January 2020 TN132, Modification 01, dated 24 January 2020 WV60, Modification 0, dated 03 January 2020 WV61, Modification 02, dated 21 February 2020 WV62, Modification 0, dated 03 January 2020 WV79, Modification 01, dated 24 January 2020 WV76, Modification 01, dated 24 January 2020 WV73, Modification 01, dated 24 January 2020 WV67, Modification 01, dated 24 January 2020 WV66, Modification 01, dated 24 January 2020 WV65, Modification 01, dated 24 January 2020 WV70, Modification 01, dated 24 January 2020 WV61, Modification 02, dated 21 February 2020 WV75, Modification 01, dated 24 January 2020 https://wdolhome.sam.gov/

SECTION 00 01 10 - TABLE OF CONTENTS

The following have been modified:

BID SCHEDULE NOTES

1) Bidders are required to bid on all items listed on the BID SCHEDULE in addition to inserting a total quoted bid in the appropriate space provided. Failure to do so will be considered good cause to disqualify the bid.

2) All quantities shown on the BID SCHEDULE are estimated quantities. Prefilled and bidder-filled estimated quantities are used for bidding purposes only. Task orders will be issued on an as needed basis which will use the unit prices provided on the bid schedule as binding rates. Quantities for task orders will be estimated and subject to a Not-to-Exceed price. Task orders may be modified as necessary to increase or decrease the quantities required under the task order, subject to availability of funds.

3) Bids are being solicited on a unit price basis. However, bidders shall insert in the spaces provided in the SCHEDULE both the "unit price" and the "estimated amount" resulting from applying the said unit price to the estimated quantity shown.

4) All unit prices shown will be subject to verification by the Government. All bids will be reviewed for mistakes, and if unit prices and estimated amounts do not agree, the unit prices will control. Bid modifications, if any, should take this into account.

5) Unit prices provided in the Bid Schedule will become binding upon award for the life of the contract and must be used on each subsequent task order. Adherence to these rates will be reviewed through submittal of supporting documentation with each task order proposal, including the sample task order.

6) The wage determinations issued in the solicitation are provided in order to assist in calculating unit prices.

Binding wage determinations will be issued on a task order basis. The successful bidder may request an equitable adjustment on the basis of increased wage rates after award of each new task order.

7) The sample task order is for bidding purposes only. Bidders shall use unit prices from the Base Year in order to complete the sample task order. No task order will be awarded from the sample task order;

however, the Sample Task Order Total will be added to the Base Year through Option Year 4 Totals for a Grand Total. The Grand Total will be used in order to determine the lowest evaluated price and apparent low bidder. Refer to the Bid Schedule Notes indicated in the Descriptions above for more information regarding each line item.

8) The dredge and attendant plant used to complete the bid schedule shall be listed on the Equipment Schedule (see Specifications, Appendix C), and shall be complete with full operating personnel and operating status for the contract period or any extension thereof. Refer to Definitive Responsibility Criteria below. No award will be made to an offeror that does not meet all of the required criteria.

9) CLINs 0001, 0009, 0017, 0025, 0033, 0041: Mobilization and Demobilization from Home Port - Price includes all work and equipment on a per-job basis required to get the dredge and attendant plant (Section 35-20-23 Part 3) ready to leave home port and also the price associated with demobilizing the attendant plant and dredge when it returns to home port after last dredge site. For progress payment purposes, these line items will be split 60% for mobilization and 40% for demobilization.

10) CLINs 0002, 0010, 0018, 0026, 0034, 0042: Dredge and Floating Plant Effective Time Operation - Estimated quantity of hours to dredge 1,200,000 of material is based on the effective time rate of cubic yards per hour of the proposed dredge and attendant plant, as described on the first page of the bid schedule. Effective time is defined in Specification 35 20 23 Dredging at Paragraph 7.1.2. These CLINs include all work and equipment required to operate the dredge and attendant plant during effective time on a per-hour basis. They do not include effective time for operating the onshore disposal equipment. In order to calculate the production rate, refer to Specifications Appendices B and C, based on an estimated 1,200,000 cubic yards of dredge material to be moved.

11) CLINs 0003, 0011, 0019, 0027, 0035, 0043: Dredge and Floating Plant Non-Effective Time Operation - Non-effective estimated quantities of hours are is assumed for bidding purposes to be 30% of the Effective Time estimated hours. The unit price for non-effective time shall be 70% of the unit price for effective time (to the nearest cent), which is binding on the bidder. For a definition of Non-Effective Time, see Specification 35 20 23 Dredging at Paragraph 7.1.3. These CLINs include all work and equipment required to operate the dredge and attendant plant during non-effective time on a per-hour basis. They do not include non-effective time for operating the onshore disposal equipment.

12) CLINs 0004, 0012, 0020, 0028, 0036, 0044: Dredge and Floating Plant Mileage for Mobilization and Demobilization - Home port site location will need to be established to determine the mileage from home port to first dredge site and last dredge site back to home port. A chart is provided for calculating this mileage on the first page of the bid schedule. The price per mile includes all labor, fuel, etc. for mobilizing and demobilizing and attendant plant (Section 35-20-23 Part 3) at the beginning and end of each task order under this contract, on a per-river mile basis. It should not include the labor for an entire dredge crew. For bidding purposes, the first dredge site location will be Ohio River Mile 975 and the last dredge site will be Ohio River Mile 532,

13) CLINs 0005, 0013, 0021, 0029, 0037, 0045: Transit Mileage - These CLINs assume 800 miles of transit during the sample task order and during each year of performance. These CLINs include all fuel, and labor, to transit the dredge, floating plant, 3200’floating pontoon pipeline, and all other required equipment, labor and materials on a per-river mile basis.

14) CLINs 0006, 0014, 0022, 0030, 0038, 0046: Onshore Disposal Equipment Mobilization and Demobilization - Price includes all work and equipment a per-job basis required to get the onshore disposal equipment ready to use, or to break it down and stow it as part of the floating plant, at a particular disposal site (See Section 35 20 23 Part 4). For progress payment purposes, these line items will be split 60% for mobilization and 40% for demobilization.

15) CLINs 0007, 0015, 0023, 0031, 0039, 0047: Onshore Disposal Equipment Effective Time Operation - Estimated quantity of hours for anticipated Effective Time Operation of Onshore Disposal Equipment has been pre-filled by the Government for these CLINs. Effective time is defined in Specification 35 20 23 Dredging at Paragraph 7.1.2. These CLINs include all work and equipment required to operate the onshore disposal equipment during effective time on a per-hour basis.

16) CLINs 0008, 0016, 0024, 0032, 0040, 0048: Onshore Disposal Equipment Non-Effective Time Operation - Estimated quantity of hours for anticipated Non-Effective Time Operation of Onshore Disposal Equipment has been pre-filled by the Government for these CLINs. Non-effective time is defined in Specification 35 20 23 Dredging at Paragraph 7.1.3. These CLINs include all work and equipment required to operate the onshore disposal equipment during non-effective time on a per-hour basis.

17) ***Amendment0002***Home Port shall be defined as one location on the river where your dredge equipment will enter the water. This Home Port location shall remain constant throughout the life of the contract. Any costs associated with getting your dredge and attendant plant to your Home Port location, shall be included in your Mobilization and Demobilization line item costs to include: 0001, 0009, 0017, 0025, and 0033.***Amendment0002***

SECTION 00 70 00 - CONDITIONS OF THE CONTRACT

The following have been added by full text:

252.236-7004 PAYMENT FOR MOBILIZATION AND DEMOBILIZATION (DEC 1991)

(a) The Government will pay all costs for the mobilization and demobilization of all of the Contractor's plant and equipment at the contract lump sum price for this item.

(1) 60 percent of the lump sum price upon completion of the contractor's mobilization at the work site.

(2) The remaining 40 percent upon completion of demobilization.

(b) The Contracting Officer may require the Contractor to furnish cost data to justify this portion of the bid if the Contracting Officer believes that the percentages in paragraphs (a) (1) and (2) of this clause do not bear a reasonable relation to the cost of the work in this contract.

(1) Failure to justify such price to the satisfaction of the Contracting Officer will result in payment, as determined by the Contracting Officer, of --

(i) Actual mobilization costs at completion of mobilization;

(ii) Actual demobilization costs at completion of demobilization; and

(iii) The remainder of this item in the final payment under this contract.

(2) The Contracting Officer's determination of the actual costs in paragraph (b)(1) of this clause is not subject to appeal.

(End of Summary of Changes)

Solicitation for Invitation for Bid

(IFB)

Lease of Dredge, Attendant Plant, and On-Shore Disposal Equipment for Channel Maintenance Dredging Ohio River (RM 150.0 – 981.0) and Ohio River Pool Areas of Tributaries, Cumberland River (RM 0.0 – 105.0), and Upper Mississippi River (RM 0.0 – 185.0)

PROJECT TABLE OF

CONTENTS DIVISION 00 - PROCUREMENT AND

CONTRACTING REQUIREMENTS

00 80 00.00 06 SPECIAL CLAUSES

DIVISION 01 - GENERAL REQUIREMENTS

01 33 00 SUBMITTAL PROCEDURES

01 57 20.00 10 ENVIRONMENTAL PROTECTION

DIVISION 35 - WATERWAY AND MARINE CONSTRUCTION

35 20 23 DREDGING

35 20 23.33 NATIONAL DREDGING QUALITY MANAGEMENT PROGRAM

PIPELINE HYDRAULIC DREDGE SPECIFICATION

-- End of Project Table of Contents --

Section 00120 - Solicitation Contract Form

EVALUATION FACTORS

BID EVALUATION FACTORS.

The following criteria are for bidding purposes:

a. The dredge will remove an estimated 1,200,000 cubic yards (917,500 cubic meters) of sediments from the Ohio River channel and associated tributaries. The sediments consist of primarily medium to coarse-grained sands with a d50 of 0.03 inch (0.8 mm).

Laboratory analysis of the sediment samples taken from the project area indicate an average sediment dry unit weight of 126 lb/ft3 (2.019 g/cc). This measurement indicates 34.50 percent voids, based on the assumption of a 165 lb/ft3 (2.65 g/cc) particle density for sand. In the saturated state, such as sediments on the bottom of the project area, the void space is filled with fresh water, resulting in a saturated sediment density of approximately 141 lb/ft3 (2.257 g/cc).

The dredge efficiencies for this project are given in Table I and depend on the dredge configuration.

TABLE I – DREDGE EFFICIENCIES

Dredge with walking spud De = 0.50 Dredge with spud carriage De = 0.75

Bank height efficiencies are listed in Table II for various dredge sizes.

TABLE II-BANK HEIGHT EFFICIENCIES

20-inch (508-millimeter) Dredge Be = 0.80 22-inch (559-millimeter) Dredge Be = 0.75 24-inch (610-millimeter) Dredge Be = 0.71

The production calculation is to be based on the capability of the dredge plant to pump a 78 lb/ft3 (1.25 g/cc) slurry at the point in the dredging cycle in which the cutterhead is engaging sufficient bank height for loading the pipeline with slurry. The dredge production will be calculated in volumetric production (cubic yards), with the calculations based on the saturated sediment density. The carrier water has an assumed water density of 62.4 lb/ft3 (1.0g/cc). The pump head reduction coefficient (K) is assumed to be 0.24. The dredge production is calculated by the following equation:

PRODUCTION (CUBIC YARD/HR) = C * Q * 133.33 * De * Be with C, or [CUBIC METER/HR = C * Q * 3600 *De * Be] the percent by volume of in situ material in the flow, defined by the following equation:

with, pm - pw C = ------pI – pw pm = The specified slurry density of 78 lb/ft3 (1.25 g/cc) pw = The specified carrier water density of 62.4 lb/ft3 (1.0 g/cc) pI = The specified saturated sediment density of 141 lb/ft3 (2.257 g/cc) and, Q = The discharge flowrate ft3/s, (m3/s) See Appendix B for procedure to determine Q

133.33 = A conversion factor from ft3/s to yd3/hr 3600 = A conversion factor from second to hour De = The stated dredge efficiency of the dredge plant Be = The stated bank height efficiency for the dredge size

The dredge must be capable of picking up and transporting the sediment to disposal within the limitations imposed by conditions of pump cavitation and available horsepower. Calculations used to support the bid production shall be in accordance with this section and Appendix B, EVALUATION OF THE DREDGE PUMP at the end of Section 35 20 23 DREDGING.

b. The dredge will operate an equivalent of 18 hours each calendar day at the effective bid price.

c. The dredge will dredge to a depth of 33 feet (10.0 meters) below the water surface with a terminal elevation of 10 feet (3 meters) above the shore or water surface. Total pipeline length shall include the discharge line on the dredge, plus 2400 feet (731.5 meters) of pontoon discharge line, two (2) swivel elbows and all other associated connection fittings.

d. The information obtained from equipment schedule, production calculations, and pump and system curves for the dredge and plant.

The comparative total cost of each bid received will be computed by adding the following cost elements:

(1) The lump sum cost of mobilization and demobilization of the dredge and attendant plant.

(2) The cost of operating the dredge and attendant plant.

a. Estimating effective pay time, to the nearest hour, will be determined by dividing 1,200,000 cubic yards (917,500 cubic meters) of sediment dredge production for conditions stated above and the Contractor’s corresponding guaranteed production rate.

b. Estimated non-effective pay time will be assumed to be 0.3 times (a) above.

c. The cost of operating the dredge and attendant plant will be computed by adding the products of:

1. Estimated effective pay time multiplied by the appropriate bid price per hour.

2. Estimated non-effective pay time multiplied by the appropriate bid price per hour.

(3) The cost of Mileage for Mobilization and Demobilization of dredge and attendant plant

a. The cost for travel by the dredge, from home port to first dredge site and from last dredge site to home port will be computed by multiplying mileage from home port to ORM 975 by appropriate bid price per mile and mileage from ORM 532 to home port by appropriate bid price.(A chart is provided for calculating this mileage on the first page of the bid schedule).

b. The cost of travel for the dredge while on Transit mileage between dredge sites, will be computed by multiplying an assumed total distance of 800 mile by the appropriate bid price per mile.

(4) The cost of operating On-Shore Disposal Equipment will be computed by adding the products of:

a. The lump sum cost of mobilization and demobilization of the On-Shore Disposal Equipment.

b. The estimated effective pay time multiplied by the appropriate bid price per hour.

c. Estimated non-effective pay time multiplied by the appropriated bid price per hour.

Defined in Section 00 80 00.00 06 PAYMENT FOR MOBILIZATION AND

DEMOBILIZATION, 1.23.

********** AMENDMENT 0001 *********

NOTE: Sample task order is a representation of what a typical dredge season totals would be.

Award will be made to the lowest bidder based on the total dollar amount of sample task order.

********** AMENDMENT 0001 *********

APPENDIX

A

I. Data Format:

Sensor Data Data Character Character Position

Parameter Units Format Length

Row 1:

Date MO-DY-YR ASCII 8 1

Other Header Information Text ASCII 120 10

Row 2..n: where n = number of entries for the 24-hour period

Hour Hr Floating Point 2 1

Minute Min Floating Point 2 4

Second Sec Floating Point 2 7

Velocity Ft/Sec Floating Point 5 13

Slurry Specific Gravity None Floating Point 4 22

Vacuum Psi Floating Point 5 29

Discharge Pres. Psi Floating Point 6 36

Ladder Depth Ft Floating Point 6 44

RPM Cycles/Min Floating Point 6 52

Suction Pipe Length Ft Floating Point 6 60

Discharge Pipe Length Ft Floating Point 7 67

Instantaneous Production Cy/Hr Floating Point 7 75

Cumulative Production Cy/Hr Floating Point 8 82

Offset Ft Floating Point 7 93

Downline Distance Ft Floating Point 8 104

Northing Coordinate Ft Floating Point 10 113

Easting Coordinate Ft Floating Point 10 124

Azimuth Grid North Floating Point 5 135

Swing Cable Pressure:

Port Psi Floating Point 8 141

Starboard Psi Floating Point 8 150

Cutterhead Pressure Psi Floating Point 8 159

Tide Correction Ft Floating Point 6 168

APPENDIX A - 1

Appendix B - i

SAFETY PAYS

APPENDIX B

EVALUATION OF THE DREDGE PUMP

I. The evaluation of a dredge pump's ability to perform under a given set of conditions will be as follows:

GIVEN: d50 - Median particle diameter millimeters ρs - Particle density in lb/ft3, (g/cm3) ρi - Saturated density in lb/ft3, (g/cm3) ρm - Slurry density in lb/ft3, (g/cm3) ρw - Carrier water density in lb/ft3, (g/cm3)

DREDGE PUMP CHARACTERISTICS (Contractor Defined):

dd - Diameter of discharge pipes ft, (m) ds - Diameter of suction pipe ft, (m) ls - Length of suction pipe ft, (m) ld - Length of discharge pipe ft, (m) SPd - Maximum power rating of drive in HP, (J/s, W) RPMp - Maximum RPM of pump at SPd deye - Diameter of pump impeller eye ft, (m) dimp - Diameter of pump impeller ft, (m)

II. Procedure

a. Determine critical suction velocity (Vscrit) as indicated below ft/s or (m/s):

Vscrit = FL × (2 × g × ds × (SGs - SGw))½ where

0.125

-6.9×d50

FL = (1.3 × Cvd ) × (1 - e ) g = Gravitational constant (32.2 ft/s2), or (9.81 m/s2)

SGm - SGw

Cvd = ------------------- Assume Cvd = Cvi

SGs - SGw

SGs = Particle specific gravity (lb/ft3 or g/cm3) SGm = Slurry specific gravity (lb/ft3 or g/cm3) SGw = Carrier water specific gravity (lb/ft3 or g/cm3)

Appendix B - ii

b. Determine equivalent pipe length due to a fitting or bend using loss coefficients and the formula as indicated below:

D × k Le = -------------

4 × C

Le = Equivalent pipe length of a fitting or bend ft, (m) D = Diameter of the pipe ft, (m) k = Loss coefficient (See Table 6.12, Ref. 5) C = 0.004 for pipe dia. > 20 in (50.8 cm)

The total equivalent pipe length for the suction and discharge fittings or bends are given below:

n

Lse = Σ Lsen

I=1 n

Lde = Σ Lden

I=1

Lse = Total equivalent pipe length for suction bends, entrance, or fittings ft, (m) Lde = Total equivalent pipe length for discharge bends, exit, or fittings ft, (m)

The total equivalent pipe length for the system is given as:

Ls = Lse + ls and Ld = Lde + ld where Ls = Total equivalent pipe for the suction side of the pump ft, (m) Ld = Total equivalent pipe for the discharge side of the pump ft, (m)

c. Determine cavitation limits of the pump:

In the absence of Net Positive Suction Head (NPSH) data for the pump, the cavitation limit will be expressed as a function of the impeller eye speed and diameter. The impeller eye speed should be between 40 and 44 feet/second, (12.192 and 13.411 m/s). The cavitation speed (RPMmax) of the pump is calculated as follows:

Veye × 60

RPMmax = -----------deye × π

Veye = Impeller eye speed in ft/s, (m/s) π = PI 60 = Conversion from seconds to minutes

Appendix B - iii

d. The diesel driven engine is essentially a constant torque machine which results in the power output being directly proportional to engine speed. As a result, the maximum diesel driven power available in order to avoid cavitation (SPmaxavail) is calculated according to the following in horsepower:

RPMmax

SPmaxavail = ------------- × SPd

RPMp

e. The Total Dynamic Head (HTDH) requirements for the system will be determined as indicated in the following equations ft, (m) of slurry:

HTDH(units of slurry) = Hs(units of slurry) + Hd(units of slurry)

Hs(units of slurry) =Head requirements on suction side of pump Hd(units of slurry) =Head requirements on discharge side of pump and f×Ls×Vs

1.75 Vs

2 Dd×(SGm-SGw)

Hs(units of slurry) = ------------------- + --------- + -------------------ds×2×g 2×g SGm

Vd

2-Vs 2 f×Ld×Vd

1.75

Hd = ------ + Z + ----------------- 2×g dd×2×g ds

Vd = -----× Vs dd g = Gravitational constant 32.2 ft/s2, (9.81 m/s2) f = 0.028 friction factor for dredge slurries Vs = Suction velocity in ft/s, (m/s) (Vs > Vscrit) Dd = Dredging depth 33 ft, (10.058 m) Vd = Discharge velocity in ft/s, (m/s) Z = Terminal discharge elevation above reference datum 10 ft, (3.048m)

Appendix B - iv

f. The flowrate (Q) at V is calculated as follows in ft3/s, (m3/s):

π×ds

Qmin = ----- × Vscrit ds = diameter of suction pipe ft, (m) vscrit = critical suction velocity ft/s, (m/s)

Determine the minimum and incremental values of the flowrate (Q) and HTDH(units of slurry) by starting with the Vs equal to Vscrit and increasing the Vs in increments of hundreths of a ft/s by repeating paragraphs (e) and (f).

g. Determine the pump head reduction factor (RH) due to the solids effect in the pump as

Cvd dimp

RHo = K × -------, RH = RHo × (-------)-0.9

0.20 do

K = Pump head reduction coefficient, 0.24 RHo = Pump reduction factor for reference pump do = 1.15 ft, (0.351 m)

h. Determine the Pump Efficiency reduction factor (Re) due to the solids effect in the pump as

Re = 0.7 * RH

i. Since the pump head reduction factor (RH) is defined as follows:

HTDH(units of slurry)

RH = 1 - ----------------------------

HTDH(units of water)

The following is implied and should be calculated for all values of HTDH(units of slurry) in order to account for solids effect in pump:

HTDH(units of slurry)

HTDH(units of water) = ---------------------

(1 – RH)

j. Create a plot of HTDH(units of water) versus corresponding flowrates overlapping pump

Appendix B - v characteristic curves. This is the system curve. Determine an operating point, HTDH(units of water) , and flowrate (Q), and corresponding pump efficiency (Ep) in decimal format to the nearest thousandth from the system curve .

k. The Brake (Shaft) Power Required (SPreq) at an operating point is calculated as follows in horsepower or watts:

Q×HTDH(units of water) ×SGm Q×HTDH(units of water) ×SGm SPreq hp = ------------------------------- SPreq W = ------------------------------ × g

550 × 3960 ×(Ep - Re) 3960 ×(Ep - Re)

Q = flow rate ft3/s, (m3/s) HTDH= total dynamic head of water ft, (m) SGm = slurry specific gravity lb/ft3, (g/cm3) Ep = pump efficiency Re = pump efficiency reduction factor G = acceleration due to gravity 32.2 ft/s2, (9.81 m/s2)

l. In accordance with the governing affinity laws, the power demand of a centrifugal pump varies as the cube of the RPM. Therefore, the required pump speed (RPMreq) at an operating point for a centrifugal pump can be calculated as follows:

Procedure: Find a reference RPM and P, brake power in horsepower, from pump manufacturer's characteristic curves along a line of constant pump efficiency (Ep). Calculate RPMreq as indicated in the following equation:

SPreq

RPMreq = RPM × (--------- )1/3

P

m. As explained in part II-d, the diesel driven brake (Shaft) power available (SPavail) at RPMreq is calculated as follows in horsepower:

RPMreq

SPavail = ---------- × SPd

RPMp

n. The system operating point will correspond to the maximum flowrate that satisfies the following inequalities:

RPMreq < RPMmax SPreq < SPmaxavail SPreq < SPavail

Appendix B - vi

HTDH(Q) < HTDH(Qmax) HTDH(Q) > HTDH(Qmin)

o. Calculate Production based upon the operating point that satisfies all of the system parameters and utilizes the maximum flowrate.

III. References

1. Stepanoff, A.J., Centrifugal and Axial Flow Pumps, John Wiley & Sons, Inc., 1957.

2. Huston, J., Hydraulic Dredging, Theoretical and Applied, Cornell Maritime Press, 1970.

3. Herbich, J.B., Coastal & Deep Ocean Dredging, Gulf Publishing Company, 1975.

4. Wilson, K.C., Addie, G.R., & Clift, R., Slurry Transport Using Centrifugal Pumps, Elsevier

Applied Science, 1992.

5. Herbich, J.B., Handbook of Dredging Engineering, McGraw-Hill, Inc., 1992, pg. 6.46.

6. Turner, T.M., Fundamentals of Hydraulic Dredging, Cornell Maritime Press, 1984.

Appendix C - i

APPENDIX C

EQUIPMENT SCHEDULE

DREDGE AND ATTENDANT PLANT

I. Dredge

1. Name , Date Built or Rebuilt , Present Location of Dredge .

2. Hull

Gross Weight (ton) , Length (ft) , Beam (ft) , Draft (ft) .

Distance from Aft End of Hull to Ladder Trunnions (ft) .

3. Spuds

Length (ft) , Weight (ton) , Diameter (feet) , Max. Distance Between Centers (ft) , Min. Distance Between Centers (ft) , Min. Distance Between Spud and Ladder Trunnions (ft) ,

4. Ladder Length (ft) , Suction Entrance Area (ft2) , Distance from Ladder Trunnions to Swing Sheaves (ft) , Swing Cables

Reel Engine power (hp) , Cable Speed (ft/min) at rated power , Reel Diameter (ft) .

Cutterhead

Engine Type , Engine power (hp) , Speed RPMmax , Speed RPMmin , Cutter Type , Length (ft) , Diameter (in) .

5. Pump Characteristics Manufacturer , Impeller Diameter (in) , No. of Vanes , Vane Type , Max. RPM , Suction Diameter (in) , Discharge Diameter (in) , Pump Efficiency at Bid Production Rate .

Appendix C - ii

6. Pump Drive

Manufacturer , Type , No. of Engines , Total Rated power (hp) , RPM at rated Power , Gear Reduction Ratio .

7. Auxiliary Power Plant

Manufacturer , Type , Size , K.W. .

8. Booster Pump Characteristics

Manufacturer , Impeller Diameter (in) , No. of Vanes , Vane Type , Max. RPM , Suction Diameter (in) , Discharge Diameter (in) , Pump Efficiency at Bid Production Rate .

Pump Drive

No. of Engines , Total Rated power (hp) , RPM at rated power , Gear Reduction Ratio .

9. Discharge Pipeline

Pontoon Pipeline Manufacturer , No. of Pieces , Length (ft) , Diameter (I.D.) (in) .

Shore Pipeline

Length (ft) , Diameter (I.D.) (in) .

Booster Pipeline

Length (ft) , Diameter (I.D.) (in) , 10.Attendant Vessels

Tender #1 Name , Date Built , Appendix C - iii

Length (ft) , Beam (ft) , Draft (ft) , Total power (hp) , A-Frame and Winch .

Tender #2

Total power (hp) , A-Frame and Winch .

Fuel/Water/Supply Barge

Derrick or A-frame Barge

Derrick or A-Frame

Manufacturer ,Date Built , Capacity (ton) .

Landing Barge

Inspection/Survey Launch

Name , Manufacturer , Date Built , Total power (hp) , Length (ft) , Beam (ft) , Overall Draft (ft) .

Jon Boat

Crew Boat

Appendix C - iv

Additional Attendant Plant Name , Manufacturer , II. Technical Equipment

1. Slurry Density Monitoring and Display Device Manufacturer , Type

2. Slurry Velocity Monitoring and Display Device

3. Suction Inlet Depth Monitoring and Display Device

4. Pump RPM Monitoring and Display Device

5. Suction Pressure Monitoring and Display Device

6. Cutterhead Pressure Monitoring and Display Device

7. Discharge Pressure Monitoring and Display Device

8. Swing cable pressure monitoring and Display Device

9. Booster Pump Monitoring and Display Device

10. Microprocessor Device

11. Data Storage Device

12.System Display Device

13.Differential Global Positioning System

Radio Link

Frequency - , Broadcast Range (miles) .

14. Surveying System

Manufacturer Depth Sounder

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DOCUMENT 00 80 00.00 06 Page 7

SECTION TABLE OF CONTENTS

DIVISION 00 - PROCUREMENT AND CONTRACTING REQUIREMENTS

SECTION 00 80 00.00 06

SPECIAL CLAUSES

05/08

PART 1 GENERAL

1.1 REFERENCES - NOT USED

1.2 SUBMITTALS

1.3 COMMENCEMENT, PROSECUTION AND COMPLETION OF WORK

1.4 NOT USED

1.5 NOT USED

1.6 NOT USED

1.7 NOT USED

1.8 CONTRACT DOCUMENTS

1.9 NOT USED

1.10 NOT USED

1.11 NOT USED

1.12 PHYSICAL DATA (APR 1984) FAR 52.236-4

1.13 UTILITIES

1.14 NOT USED

1.15 LAYOUT OF WORK

1.16 NOT USED

1.17 PERFORMANCE OF WORK BY THE CONTRACTOR

1.18 NOT USED

1.19 NOT USED

1.20 NOT USED

1.21 NOT USED

1.22 NOT USED

1.23 PAYMENT FOR MOBILIZATION AND DEMOBILIZATION (DEC 1991) DFARS

252.236-7004

1.24 NOT USED

1.25 NOT USED

1.26 PROJECT SIGN

1.27 NOT USED

1.28 WAGE RATES

1.29 NOT USED

1.30 TEMPORARY PROJECT AND SAFETY SIGNS

1.31 SEQUENCE OF WORK

1.32 GOVERNMENT FIELD OFFICE FACILITIES AND SERVICES

1.33 NOT USED

1.34 NOT USED

1.35 NOT USED

1.36 NOT USED

1.37 NOT USED

1.38 NOT USED

1.39 NOT USED

1.40 NOT USED

1.41 INSURANCE--WORK ON A GOVERNMENT INSTALLATION (SEP 1989) FAR

52.228-5

1.42 NOT USED

1.43 NOT USED

1.44 NOT USED

1.45 AVAILABILITY OF SAFETY AND HEALTH REQUIREMENTS MANUAL (EM 385-1-1)

1.46 NOT USED

DOCUMENT 00 80 00.00 06 Page 8

1.47 NOT USED

1.48 NOT USED

1.49 NOT USED

1.50 CONSTRUCTION HAZARD COMMUNICATION

1.51 NOT USED

1.52 NOT USED

1.53 NOT USED

1.54 NOT USED

1.55 NOT USED

1.56 VARIATIONS IN ESTIMATED QUANTITIES - SUBDIVIDED ITEMS

1.57 NOT USED

1.58 NOT USED

1.59 NOT USED

1.60 SITE SAFETY AND HEALTH OFFICER (SSHO)

1.61 NOT USED

1.62 NOT USED

1.63 OBSTRUCTION OF NAVIGABLE WATERWAYS (DEC 1991) DFARS 252.236-7002

1.64 SIGNAL LIGHTS

1.65 NOT USED

1.66 NOT USED

1.67 NOT USED

1.68 NOT USED

1.69 NOT USED

1.70 NOT USED

1.71 NOT USED

1.72 NOT USED

1.73 NOT USED

1.74 NOT USED

1.75 NOT USED

1.76 NOT USED

1.77 NOT USED

1.78 NOT USED

1.79 NOT USED

1.80 NOT USED

1.81 EMERGENCY SIGNALS

1.82 CONTRACTOR QUALITY CONTROL

PART 2 PRODUCTS NOT USED

PART 3 EXECUTION NOT USED

-- End of Section Table of Contents --

DOCUMENT 00 80 00.00 06 Page 9

SECTION 00 80 00.00 06

SPECIAL CLAUSES

01/17

PART 1 GENERAL

1.1 REFERENCES - NOT USED

1.2 SUBMITTALS

Government approval/acceptance is required for submittals with a "G" designation; submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. The following shall be submitted in accordance with Section 01 33 00 SUBMITTAL

PROCEDURES:

SD-01 Preconstruction Submittals

Quality Control Plan, G

SD 07 Certificates

Insurance

SF1413 Statement and Acknowledgement

1.3 COMMENCEMENT, PROSECUTION AND COMPLETION OF WORK

1.3.1 Commencement, Prosecution, and Completion of Work (Apr 1984) FAR 52.211-10

The Contractor shall be required to

a) commence to assigned work site under this contract within 15 calendar days after the date the Contractor receives the notice to proceed, then proceed travel to the first assigned work site,

b) proceed to dredge site indicated in the notice to proceed prosecute the work diligently, and

c) prosecute the work in a manner to complete all dredging operations within the schedule determined by the Contracting Officer. All work shall be completed within the dates of 15 May to 15 November after receiving notice to report. Upon termination or completion of the contract period, the dredge plant will be released to the Contractor.

1.3.2 Delivery, Inspection, Acceptance/Rejection

The Contractor shall deliver the dredge and attendant plant base equipment ready for operation at the work site, as directed by the Contracting Officer or Representative (COR), the work site shall be reached within 15 calendar days after the date of receipt by the Contractor of the Notice to Proceed.

The plant at this time shall not include any additional equipment as specified in Section 35 20 23 DREDGING, Part 4, unless specifically requested in writing by the Contracting Officer. Upon arrival of the dredge plant at the delivery site, the Contracting Officer's authorized

DOCUMENT 00 80 00.00 06 Page 10 representative will inspect the plant. The Contractor will be notified of acceptance or rejection of the plant within twenty-four hours after delivery. If accepted, the dredge will be given an immediate assignment. If the Contracting Officer determines, during the pre-work inspection at the delivery site or at any time thereafter, that the dredge and/or attendant plant fails to meet the contract specifications, the dredge plant may be rejected, and the contract terminated under Contract Clause: Default.

1.3.3 Additional Plant

The additional plant as specified in Section 35 20 23 DREDGING, Part 4, shall be delivered within fourteen calendar days after the receipt of the written notification from the Contracting Officer outlining the required delivery site and type of equipment requested.

1.3.4 Contract Option for Additional Contract Period(s)

The Contacting Officer may exercise the option to extend the contract for the calendar year 2021 thru 2024 dredging seasons. If the Government intends to exercise the options(s), the Contracting Officer will issue a written notice within 30 calendar days prior to completion of the current contract period. If an option is executed, all specifications and contract requirements will remain the same as the original contract period. Payments will be made using the applicable unit prices for the contract period in which the dredging operations are performed. These contract prices are indicated in Section 00010 within the bid schedule.

1.3.5 Suspended Operations

The Contracting Officer reserves the right to suspend operations whenever river or other conditions make dredging operations impractical or uneconomical. If at the convenience of the Contractor the dredge plant is removed from the site where the suspension occurred during the period of suspension, the Contractor will be required to return the dredge plant to operations within five calendar days as specified in Section 35 20 23 DREDGING, Part 7. Such periods of suspension when ordered by the Contracting Officer will not be counted as part of the contract work period.

1.3.6 Termination

The Contracting Officer may terminate the contract in the event of late delivery of the dredge plant or any time after a contract work period of one calendar day by giving three calendar days written notice to the Contractor.

1.4 NOT USED

1.5 NOT USED

1.6 NOT USED

1.7 NOT USED

1.8 CONTRACT DOCUMENTS

a) The Government will provide the Contractor, without charge, one set contract documents except publications incorporated into the technical provisions by reference, in electronic or paper media as

DOCUMENT 00 80 00.00 06 Page 11 chosen by the Contracting Officer.

b) The Contractor shall--

1) Check all documents furnished immediately upon receipt;

2) compare all documents and verify the figures before laying out the work;

3) promptly notify the Contracting Officer of any discrepancies;

4) be responsible for any errors that might have been avoided by complying with paragraph (b); and

5) reproduce and print contract documents as needed.

c) In general--

1) Large scale drawings shall govern small scale drawings; and

2) the Contractor shall follow figures marked on drawings in preference to scale measurements.

d) Omissions from the contract documents or the misdescription of details of work that are manifestly necessary to carry out the intent of the drawings and specifications, or that are customarily performed, shall not relieve the Contractor from performing such omitted or misdescribed details of the work. The Contractor shall perform such details as if fully and correctly set forth and described in the drawings and specifications.

e) The work shall conform to the specifications.

1.8.2 Government Furnished Electronic Technical Contract Documents

After Award or no later than Notice to Proceed (NTP), the Government will furnish the Contractor a compact disk containing all technical contract documents in electronic media only. This disk will include a complete set of documents which have all amendments incorporated.

1.9 NOT USED

1.10 NOT USED

1.11 NOT USED

1.12 PHYSICAL DATA (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.

1.12.1 Potential Dredge Material

The material to be dredged may consist of sand, gravel, loose rock, silt, mud, clay, stumps, roots, logs, riprap, driftwood, sunken objects, pilling, stone dikes, broken concrete/asphalt, and miscellaneous other debris. The dredge shall be equipped with suitable pump impellers and cutterheads to efficiently handle these varying materials.

1.12.1.1 In-situ Core Samples

DOCUMENT 00 80 00.00 06 Page 12

a) Sand and Gravel

Laboratory analysis of the sand and gravel samples taken from the project area indicate an average sediment dry unit weight of 108 lbs. /cubic foot (cf). This measurement indicates a 34.50% voids ratio, based on a 165.4 lbs. /cf particle density. In the saturated state, the voids are filled with fresh water resulting in a saturated insitu sediment density of approximately 129.85 lbs/cf.

b) Clay

Analysis of samples for clay and silt indicates a dry unit weight of 78.4 lbs/cf. This measurement indicates 54.99% voids ratio, based on 170.4 lbs/cf. In the saturated state, the void space is filled with fresh water resulting in a saturated in-situ sediment density of 112.1 lbs./cf for clay.

1.12.2 Water Current

The current may vary from zero to five knots depending on site and river conditions.

1.12.3 Production Calculation

The production calculation is to be based on the capability of the dredge plant to pump a 78 lbs. /cf slurry for sand/gravel and 68.7 lbs.

/cf for clay/silt at the point in the dredging cycle in which the cutterhead is engaging sufficient bank height for loading the pipeline with slurry. The dredge production will be calculated in volumetric production (cubic feet) with the calculations based on the saturated in-situ sediment density. The carrier water has an assumed water density of 62.4 lbs/cf. The pump head reduction coefficient (K) is assumed to be 0.24. Dredge production is calculated using a dredge efficiency factor based upon design, a constant average bank height efficiency factor, and the Production Equation all outlined in Section 00120 Evaluation Factors for Award.

1.12.4 Weather Conditions

The Contractor shall make his own investigations as to weather conditions at the site. Data may be obtained from various National Weather Service offices located in or near principal cities, such as

National Weather Service Louisville Weather Forecast Office 6201 Theiler Lane, Louisville, KY 40229 Administration: (502) 969-8842 Recorded Forecasts: (502) 968-6025

Or via the Internet at www.nws.noaa.gov

Historical data for all areas may be obtained from:

U.S. Department of Commerce National Climatic Data Center Federal Building 151 Patton Avenue Asheville NC 28801-5001

DOCUMENT 00 80 00.00 06 Page 13

Phone: 828-271-4800

Information for acquiring data may also be found at www.ncdc.noaa.gov.

1.12.5 Transportation Facilities

Roads and railroads in the general area are shown on the drawings.

Access ways shall be investigated by the Contractor to satisfy themselves as to their existence and allowable use.

1.12.6 Work Conditions

The work required may consist of performing operations in such areas as restricted channels, lock approaches, harbors, and other similar areas that could hinder efficiency.

1.13 UTILITIES

The Contractor shall provide at least project channel dimensions over all utility crossings (pipelines, structures, etc.). The Contractor shall submit for approval by the Contracting Officer a detailed plan of operation at each pipeline or utility crossing where construction surveys indicate project channel does not exist. Where dredging to the required dimensions might endanger any structure, the Contracting Officer may require the required excavation in the vicinity of such structure. The plan shall contain emergency measures to be taken in the event of an accident. The Contractor, when operating within fifty meters of any utility or other type structure, shall notify the owner at least three calendar days prior to performing work. The Government will not be responsible for any damage to structures or utilities due to the Contractor's deviation from the approved plan.

Any unidentified pipelines or structures which may be found within the limits of work shall not be disturbed nor shall dredging or the disposal of dredged material be performed at these locations unless, and until, approved by the Contracting Officer.

1.14 NOT USED

1.15 LAYOUT OF WORK

1.15.1 General

a) The Contractor shall be responsible for executing the work to the lines and grades that may be established or indicated by the Contracting Officer.

b) The Government Inspector will inspect dredge layouts, location marks, buoys, gages, and references established by the Contractor in order to insure positional and vertical compliance with layout drawings furnished prior to dredging the site. The presence or absence of the Dredge Inspector shall not relieve the Contractor of responsibility for proper execution of work.

c) The Contractor shall maintain all equipment, location marks, buoys, gages, and position references to properly control the dredging alignment to Class 1 standards as outlined in EM 1110-2-1003, "Hydrographic Surveying". If such equipment, location marks, buoys, gages, or position references are displaced, destroyed, or otherwise become inoperable, the Contractor shall re-establish the relative control measures as directed by the Government Inspector. Should the Contractor fail to do so promptly, they will be replaced by the http://www.ncdc.noaa.gov/

DOCUMENT 00 80 00.00 06 Page 14

Government. Any expense incurred by the Government in replacing required control will be deducted from amounts due or to become due the Contractor.

1.15.2 Contracting Officer's Field Representation

A Contracting Officer's Representative (COR), or a Government Inspector will visit the dredge daily or as needed to check on the progress of the work, compliance with requirements, and to consult with the Contractor's Superintendent. Access must be available to such a government representative at any time during the rental period.

1.15.3 Requirements of the Contractor

a) The Contractor shall:

1) Furnish upon request of the Government Inspector, the personnel and survey launch specified in Section 35 20 23, DREDGING, Paragraph 3.3 (2), for the purpose of survey, pre-dredge layout inspection, transportation, inspection of work/plant/disposal site, positioning of buoys, and any other items of work related to the contract.

2) Furnish upon request of the Government Inspector, or other

Government employee, suitable transportation between the Contractor's landing flat and any item of the dredge plant.

3) Furnish to the Government Inspector or other Government employee on board the dredge all required records, reports, charts, logs, etc.

1.16 NOT USED

1.17 PERFORMANCE OF WORK BY THE CONTRACTOR

a) Per "PERFORMANCE OF WORK BY THE CONTRACTOR" (APR 1984), FAR 52.236-1: The Contractor shall perform on the site, and with its own organization, work equivalent to at least 60 percent of the total amount of work to be performed under the contract. This percentage may be reduced by a supplemental agreement to this contract if, during performing the work, the Contractor requests a reduction and the Contracting Officer determines that the reduction would be to the advantage of the Government.

b) For purposes of this paragraph, "WORK BY THE CONTRACTOR" is defined as prime Contractor direct contract labor (including testing and layout personnel), exclusive of other general condition or field overhead personnel, material, equipment, or subcontractors. The "TOTAL AMOUNT OF WORK" is defined as total direct contract labor (including testing and layout personnel), exclusive of other general condition or field overhead personnel, material, or equipment.

c) Within 7 calendar days after the award of any subcontract, either by himself or a subcontractor, the Contractor shall deliver to the Contracting Officer a completed SF1413 "Statement and Acknowledgment."

The form shall include the subcontractor's acknowledgement of the inclusion in his subcontract of the clauses of this contract entitled "Davis-Bacon Act," "Contract Work Hours and Safety Standards Act-Overtime Compensation," "Apprentices and Trainees," "Compliance with Copeland Regulations," "Withholding of Funds," "Subcontracts," "Contract Termination-Debarment," and "Payrolls and Basic Records." Nothing

DOCUMENT 00 80 00.00 06 Page 15 contained in this contract shall create any contractual relation between the subcontractor and the Government.

1.18 NOT USED

1.19 NOT USED

1.20 NOT USED

1.21 NOT USED

1.22 NOT USED

1.23 PAYMENT FOR MOBILIZATION AND DEMOBILIZATION (DEC 1991) DFARS

252.236-7004

a) Payment for Mobilization and Demobilization of the dredge plant and supporting equipment shall be made by lump sum payment. The lump sum is for preparation of equipment and overhead costs incurred prior to work as per Section 00 80 00.00 06 SPECIAL CLAUSES. Mobilization payment shall be included in the first daily pay estimate at the initial work site.

Demobilization shall be included in the last daily pay estimate at the final work site upon suspension of work. Payment for travel from home port to initial work site and final work site to home port shall be paid from the mileage rate for Mobilization and Demobilization payment rate.

1) Additional Equipment. Additional Equipment as defined in Section 35 20 23 DREDGING, Part 4, are subject to being payed demobilization fees as…