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Sewage Department
Installer Notices
NOTICE #2
8/21/08 Plastic
Tanks / Aggregate Certification Slips
MEMO:
To:
All Sewage System Installers
operating in Dingman Township
From:
Chris Wood, Sewage Enforcement
Officer
Re:
Plastic Tanks / Aggregate
Certificates
Date:
August 21, 2008
Plastic Tanks
[For purposes of
this memorandum, plastic tanks will include
all sewage tanks made of materials other
than concrete or steel].
Recently we have
had problems with installers attempting to
use plastic tanks that are not lawful for
use in Pennsylvania. Some of these tanks
even had sales literature that stated they
were certified for use in Pennsylvania.
DEP does not
certify plastic tanks. It leaves the
determination of legality to the SEO in the
field.
Even if a
reputable local dealer sells a legal tank,
there could be installation concerns. One
tank sold locally may not be
installed…”where the water table is higher
than the base of the tank”. Therefore, the
tank may not be installed on most lots where
a sandmound will be used.
Before you
install a plastic tank, you must call me and
inform me of the brand and size of the tank.
We will then contact the manufacturer (often
via the internet) to determine:
- If
the tank is compatible with the
Pennsylvania Regulations.
- If
the tank is structurally sound and
durable.
- The
maximum depth of installation
- The
maximum depth of installation into the
water table.
-
What, if any, special installation
instructions the tank manufacturer may
require.
If you install a
plastic tank that is not approved by this
office, you will be required to remove it
and replace it with an acceptable tank.
Aggregate Certificates
The Township has
experienced a couple malfunctions that were
attributed to the fine material (stone dust)
in septic system aggregate. We have also
found installers using improper materials.
Effective
immediately, aggregate certification slips
will be required.
Like sand
certificates, the quarry would issue the
aggregate certificates. The certificates
must state that the aggregate either.
-
Meets the requirements of 25 Pa. Code
§73.51(a)
- or-
-
Meets PennDOT specifications found in
Publication #408 (1994) Section 703
sized and graded to meet AASHTO #57 Type
B quality and
taken from a PennDOT certified
stockpile.
If you have any
questions, please feel free to call or stop
by our office.
______________________________
Chris Wood
Sewage
Enforcement Officer
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