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Instructions for Underground Injection Control Class V Closure Plans

Instructions for Underground Injection Control Class V Closure Plans

To ensure Underground Injection Control (UIC) Class V well closure in an environmentally
sound manner, the EPA requires the following information to be included in your Class V well
closure plan (Please note that, for sanitary systems where a connection to the sewer is not
possible, the sanitary system may remain in use as long as the chemical contamination is cleaned
out and the chemical discharge is ceased.):

A.

A schematic diagram displaying the injection well system; the diagram must include all
drains, piping, processing units such as oil/water separators or septic tanks, and final
discharge mechanisms such as drywells, leach fields or open underground pipe.

B.

A description of all fluids which enter the Class V well.

C.

A statement indicating that the connection between all drains of concern and the injection
well (cesspool, drywell, open pipe or leachfield), will be verified.

D.

A description of plug emplacements (if applicable).

E.

A statement indicating that all contaminated liquids, sludges, and contaminated soil will
be removed from in and around the Class V injection well until visibly clean soil is
reached, or structural integrity of the excavation or buildings or other significant
structures near the excavation, may be compromised.

F.

A description of on-site storage while awaiting proper disposal, of liquids, sludges and
contaminated soil removed from the Class V well system.

G.

A statement indicating that all wastes will be characterized for disposal purposes, in
accordance with Federal, State, and local regulations.

H.

An end-point sample shall be collected from the cleaned out Class V well, below the
point of discharge. The end-point sample shall be analyzed according to well use and
injectate constituents. A statement must included indicating what analytical methods will
be used. Recommended EPA methods are included below.

$

For large capacity cesspool wells (20 or more people per day), which receive only
sanitary waste, an end-point sample and analysis is not required.

$

For motor vehicle waste disposal wells, the end-point sample shall be analyzed
for volatile organic compounds (EPA Test Method SW-846 8260), semi-volatile
organic compounds (EPA Test Method SW-846 8270 base/neutral extraction),
and arsenic, cadmium, chromium, and lead by a total metals analysis.
$

For funeral home waste disposal wells, the end-point sample shall be
analyzed for volatile organic compounds (EPA Test Method SW-846
8260); phenol, 2-methylphenol and 4-methylphenol (EPA Test Method
SW-846 8270 base/neutral extraction, or EPA Test Method SW-846
8041); and formaldehyde (EPA Test Method SW-846 8315).

$

For industrial discharge wells, the end-point sample shall be analyzed for
contaminants present in the injected discharge (analyses may include
volatile organic compounds - EPA Test Method SW-846 8260; semi-
volatile organic compounds - EPA Test Method SW-846 8270
base/neutral extraction, and metals, herbicides or pesticides).

$

Leachfield Sampling: Pull one sample taken 4 feet under the center point
of the leachfield for compounds in soil, and water if encountered. For
volatile organic compounds (EPA Test Method SW-846 8260), semi-
volatile organic compounds (EPA Test Method SW-846 8270 base/neutral
extraction), and arsenic, cadmium, chromium, and lead by a total metals
analysis

I.
Clean inert soil or sand will be used as backfill.

J.

A statement must be included indicating that a final report outlining the closure
procedures, and including all initial and end-point analyses results and waste
disposal manifests shall be submitted to:

Dennis McChesney, Chief
Ground Water Compliance Section
2DECA-WCB, 20
th
Floor
U.S. Environmental Protection Agency

290 Broadway
New York, NY 10007-1866



The Class V well work plan must be submitted to EPA and approved by EPA prior to
initiation of well initial sampling and/or clean-out activities. You shall be notified that
EPA has approved your work plan or that you will be required to modify your work plan
to meet the requirements listed above.

In order to receive a letter from the EPA documenting proper initial sampling and/or
clean-out of your wells, you must submit a final closure report outlining the closure
procedures, and including all sampling results and waste disposal manifests.