Unit Price Contracts - Area Measure.

EP 1130-2-520

29 Nov 96

(d) assure specifications are written to allow the use of all types of dredge plant capable

of efficiently, effectively, and safely performing the work in an environmentally sound manner; and

(e) assure that the surveys specified in the contract are sufficient to verify that the

contract requirements are met;

(2) Unit Price Contracts - Area Measure. To ensure that area measure unit price contracts

are effectively used, the District Commander will:

(a) define the scope of work and determine the depth of the cut;

(b) perform payment surveys in an accurate and timely manner;

(c) assure specifications are written to allow the use of all types of dredge plant capable

of efficiently, effectively, and safely performing the work in an environmentally sound manner;

(d) assure that the surveys specified in the contract are sufficient to verify that the

contract requirements are met; and

(e) determine that the area to be dredged is the overriding cost factor rather than the

depth of cut, but the required channel depth is achieved.

(3) Unit Price Contracts - Time Measure. Leased equipment dredging contracts may be

used when the quantities of material to be dredged cannot be accurately estimated (e.g., areas of

active or erratic shoaling, where shoaling cannot be determined or is difficult to predict prior to

bid opening, or where rapidly fluctuating river stages exist), and accurate and timely surveys are

difficult to accomplish. To ensure that leased equipment dredging contracts are effectively used,

the district commander will:

(a) assure specifications are written to require adequate plant and personnel to complete

contract requirements in a timely, safe, and environmentally sound manner; and

(b) require quality assurance representatives on board the leased dredge whenever the

dredge is working for pay.

(4) Unit Price Contracts (Other) - Scow or Bin Measure. Scow or bin measure contracts

may be used when the contracting officer determines that a contractor will be at risk of receiving

insufficient credit for work performed due to rapid shoaling and/or significant changes in bottom

conditions. To ensure that scow or bin measure contracts are effectively used, the District

Commander will:

(a) provide quality assurance representatives on board the vessel at all times, or provide a

method to determine that the dredging process is being performed in accordance with the

specifications;

(b) assure specifications describe the relationship between the quantity of in place material

and the measurement of the material. Typically, the relationship might include bulking factor or

insitu density;

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