CHAPTER ONE

BACKGROUND AND SCOPE

The purpose of this Manual is to provide information that will assist facilities in

conducting RCRA ground water monitoring programs. Specifically, this Manual discusses

techniques or procedures necessary to meet the requirements of the following sections of 40

CFR Parts 264 and 270:

 264.97(a)

General performance standards for ground water

monitoring;

 264.97(c)

Well casing and annular seal requirements;

 264.97(d)

Sampling and analysis procedures;

 264.97(e)

Appropriateness of sampling and analytical methods;

 264.97(f)

Ground water elevation measurements;

 264.196(d)(3)  

Geologic and hydrogeologic reports and the results of any

monitoring or sampling, if applicable, that are submitted

to the Regional Administrator in response to leaks or

spills and disposition of leaking or unfit for use tank

systems;

 270.14(c)

Additional information requirements for Part B Permit

Applications, and identification of the uppermost aquifer;

 270.16(h)(1)  

Hydrogeologic report for owners and operators of tank

systems seeking a variance from design and operating

requirements under  264.193(g);

 270.17(b)(1)  

Hydrogeologic report for owners and operators of surface

impoundments seeking a variance from the design and

operating requirements under  264.221(b);

 270.18(c)(1)  

Hydrogeologic report for owners and operators of waste

piles seeking a variance from design and operating

requirements under  264.251(b);

November 1992

1 1