answersLogoWhite

0

CALCULATION OF AVERAGE RESIDUAL CONCENTRATION (ARC)ARC is defined as an area-weighted statistical estimation of the average residual concentration of PCBs

left in the surface soil in the characterized area of the site following excavation and prior to backfill.

Information used for the ARC estimates was site characterization surface soil data and the

computer-generated/hand calculated surface areas. In addition, classical deterministic statistical

methods and the Statistical Analysis SystemTM (SAS) computer software package were utilized to

calculate the ARCS values. The step-by-step procedure to calculate the ARC for a particular site is as

follows:

Surface soil data with concentrations greater than or equal t o 1 ppm total PCBs were

obtained from the TlMS database.

Property surface areas for areal extent of PCBs were calculated for four areas (A, 8, C,

D) of each site:

-

-

-

-

Area within 25 ppm contour lines (Area A).

Area between 10 and 25 ppm contour lines (Area B).

Area between 5 and 10 ppm contour lines (Area C).

Area between 1 and 5 ppm contour lines (Area D).

User Avatar

Wiki User

14y ago

What else can I help you with?

Related Questions

What is residual-titration?

Residual titration is a method used in analytical chemistry to determine the concentration of a substance in a sample by adding a reagent until no further reaction occurs. This endpoint is reached when the reaction is stoichiometrically complete, allowing for the calculation of the initial concentration of the substance being analyzed.


What is total residual chlorine?

Total Residual Chlorine (TRC) is the total of free available residual chlorine and combined (bound) residual chlorine. The amount of measurable chlorine remaining after treating water with chlorine i.e. amount of chlorine left in water after the chlorine demand has been satisfied


Can you buy bug bombs in Ireland?

I advise against it, foggers are expensive and usually don't solve the problem because concentration is not enough to get 100% and there is no residual killing effect.


What is a residual lake?

Lakes which are made by residual rocks which are left after weathering and erosion and form the residual lakes.


What is a residual haunting?

A residual haunting is a playback of a past event.


Who does Residual income of a firm belongs to?

The residual income of the firm belongs to


What is the functional residual capacity FRC composed of?

Functional Residual Capacity (FRC) = Expiratory Reserve Volume (ERV) + Residual Volume (RV)


The air remaining in the lung after a maximal expiration is the?

residual volume


The residual income of the firm belongs to?

residual income belongs to the common stockholders.


Give an example of a residual mountain found in Africa?

residual mountains in africa


Why is it important that they look after the residual powers?

Residual power can build up and overcome.


How are residual mountains form?

Residual mountains are formed by the plates in the earth moving