CONFIRMATORY SAMPLING PROTOCOL
CLOSURE-IN-PLACE OR CHANGE-IN-SERVICE

Number of Samples

SOIL UNDER TANK ACCESSIBLE - NO WATER ENCOUNTERED

 

TANKS*

PRODUCT

DISPENSERS

DELIVERY

LINES

REMOTE FILL

(IF PRESENT)

 



<= 1000 GAL



1001-20000 GAL

SOIL

2

3

1

1**

1

COMMENTS

Take Samples 2 Ft. Below Bottom of Tank-See Closure Guidance For Specific Locations

Take 1 Sample Per Dispenser, 2 Ft. Below Surface Directly Under Dispenser

Take 1 Ft. Below Line

Take 2 Ft. Below Fill Opening

SOIL UNDER TANK ACCESSIBLE - WATER ENCOUNTERED

WITHIN 2 FEET OF TANK BOTTOM

 

TANKS*

PRODUCT

DISPENSER

DELIVERY

LINES

REMOTE FILL

(IF PRESENT)

 



<= 1000 GAL



1001-20000 GAL

SOIL

2

3

1

1**

1

WATER

2

3

***

***

***

COMMENTS

One Soil Sample And One Water Sample Just Above Soil/Water Interface- See Closure Guidance for Specific Locations

Take 1 Sample Per Dispenser, 2 Ft. Below Surface Directly Under Dispenser

Take 1 Ft. Below Line

Take 2 Ft. Below Fill Opening

SOIL UNDER TANK NOT ACCESSIBLE OR WATER ENCOUNTERED

BETWEEN TANK BOTTOM AND GROUND SURFACE (Using Perimeter Borings)

 

TANKS*

PRODUCT

DISPENSER

DELIVERY

LINES

REMOTE FILL

(IF PRESENT)

 

<3000 GAL

3001-20000 gal

SOIL

4

6

1

1**

1

WATER

4

6

***

***

***

COMMENTS

One Soil Sample And One Water Sample (If Water Encountered) Per Boring Just Above Soil/Water Interface- See Closure Guidance for Specific Locations

Take 1 Sample Per Dispenser, 2 Ft. Below Surface Directly Under Dispenser

Take 1 Ft. Below Line

Take 2 Ft. Below Fill Opening

* For tanks in excess of 20,000 gallons, contact the DEP Regional Office responsible for the county in which the
tank is located.

** If piping is also closed-in-place, see Section VI.C.2.e.(2), pg. 22.

*** Assumes water is not encountered.