Untied Sum. Ofl’ce o
Env,ronm.n P?omclson SoI d W..t.
Em.r9.rc R.iøon..
DIRECTIVENUMBER: 9483.05(83)
TITLE: Waiver of Minimum Shell Thickness Requirement
APPROVAL DATE: 12-8-83
EFFECTIVE DATE; 12883
ORIGINATING OFFICE: Office of Solid Waste
] FINAL
O DRAFT
[ I A— Pending 0MB approval
STATUS: [ ] B— Pending AA-OSWER approval
] C— For review &/or comment
} D— In development or circulating
REFERENCE (other documents): headquarters
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‘ DIR
ECTIVE
DIRECTIVE
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PARTS 264 AND 265 SUBPART J - TANKS
DOC: 9483.05(63)
Key Words: Minimum Shell Thickness, Tanks
Regulations: 40 CFR 264, 266, 270
Subject: Waiver of Minimum Shell Thickness Requirement
Addressee: Conrad Simon, Director, Air and Waste Management
Division, Region II
Originator: Bruce R. Weddle, Acting Director, State Programs
and Resource Recovery Division
Source Doc:
Date:
Summary:
09483.05(83)
12-8-83
The regulations for hazardous waste storage/treatment tanks contain no
provision for granting a waiver of the minimum shell thickness requirement.
Although at times there are difficulties in applying the minimum thickness
concept, it is an important requirement that must be addressed in every RCRA
tank permit.
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9483.05 (83)
0 LX I I
sU EcT: Waiver of Minimum 3r ell Thickness oqulrement
oM: ruce . eJ’ 1e, Actiny i)irector
state ro -jraxns and source ocovery .)ivision
TO: Conrad Si ’on, r)irector
Air and waste Management Division — Region II
As you know, part o our onçjoing etfort to monitor regional
CRA permit programs invol7ea reviewing the final erTaits
issued by each Re ional Ottice. We have generally been impressed
by the quality of the permits issued by h egion II. However,
we recently r oticed a ricus omisaion in two 0 f the permits
that I want to bring to your attention. Specifically, the
requirement to est 1DlL fl rulni aum shell thicknesses for hazardous
waste etoraye/ treatruent tanks has oeen waived in the permits
issued to C & 0 uatt3rie s in riuguenot, NY, and the General
Electric R & D Center i.n Schenectady.
As stated in SZ70.32(b), ‘eacn RC1 A permit shaLl. include
permit coRditiona necessary to achieve conipliance with the Act
and reçulatione, including eson of the appLicable requirements
specified in 40 CFR Parts 264, 266, and 270.’ One of these
requirements is that ‘the Regional A dministrator shall require
that a ninimum shell tnlcknesR be naintaina’i at all times to
ensure 3ufficient shell str nyth ( 264.l9l). The regulations
contain no provision for ranting a waiver ot tne minimum shell
thickness requirei ent. eUthouç h I recogrtiz tnat there are
difficulties in ap lyi.ruj the minimum shell thic n ss concept,
it is nevertheless an i ’portant re.j’lldtory re uiremeflt, an It
ust be addressed in every CRA tank er it. I nope tnat
Region Ii will, act to ensure that the re utr ment will not be
waived in future er iics issued by r.fle Region.
Please let rue ‘ nO4 if tnere are. any questions.
cc: Peter Guerrero
Terry •3rot an
Dave F gan
DFjan:dmt:12/ / : ‘I . — 43zdisk F cJan
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UVU1 d Siaiss utic. of
Et vironmrn..i Proactien Solid Wi t a
- - Em .rg .ncyR.soons.
&E PA DIRECTIVE NUMBER: 9483.05(83)
TITLE: Waiver of Minimum Shell Thickness Requirement
APPR OVAL DATE: 12-8-83
EFFE&r1 ’E DATEi
ORIGiNATING Waste
FINAL
ODRAFT
A- Pindjt O A ‘rovj
STATUS: B pendjn YM OSWER approva
C For revjew&/or comment
AE M ENC (other documents) r1faaquarters
r - I t m ’ . ,,.4
& __ __ __
E iET TE !IAvE
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PARTS 264 AND 265 SUBPART .1 — TANKS DOC: 9483.O5( 3)
Key Words: (inimurn Shell Thickness, Tank.s
RegulatiOns: 40 CFR 264, 266, 270
Subject: Waiver of Minimum Shell. Thickness Requirei nt
Addressee: Conrad Simon, Director, Air and Waste Management
Division, Region tI
Originator: Bruce R. Weddle, Acting Director, State Programs
and Resource Recovery Division
Source Doc: l 9483.05(83)
Date: 12—8—83
Summary:
The regulations for hazardous waste storage/treatment tanks contain no
provision for granting a waiver of the minimum shell thickness require nt.
Although at times there are difficulties in applying the minimum thickness
concept, it is an important requirei nt that must be addressed in every EtCRA
tank permit.
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9683.05 (83)
iJ 1
sUth 1 CTz iaiver of 4inLvnun i. rhiclcne 5s equirenent
ruce . J 1a, ctinq .)ir ctor
tat’ r jra tS 3nd dsoUrc, ocovery )tvisiOn
TO: Conrad Sir’on, rirector
Air and Waste iana)em flt Division — i .gion II
As you know, art o our on(Joinq etfort to eonitor regional
RCRA permit programs inYOLrea reviewing the final ermit3
issued by each Ne ional o ttce. a have generally been impressed
by the quality of the 2er tt3 issued by .gion II. However,
w recently toticed a rinus omission in two o the permits
that I want to Dring to your attention. Specifically, the
requirement to staolLsn ainiMua shell thicknesses for hazardous
wast• etora Je/ treat vent tinkS haS DSSfl waived in the permits
issued to C & D Uatt3rie s in duguenot, NY, and the Uan.rai
electric R & D Center .n Schenectady.
As stated in Z O.32(b), !ach RCRA permit shall include
permit cortditiona necessary to achieve compliance with the Act
and regulations, including eacl of the applicable r.qutr.a.nts
specified in 40 CF Parts 264, 266, and 270. One of these
requirements is tLiat ‘the egional dministrator shall require
that a ninixsum shell tnic” neen e naintainai t alL tines to
ensure 3ufficient shell str n jth (S264.191). the reyulat ons
contain no provision or rantiflg a waiver t tr e c ininium shell
thickness requirement. Utfloucjh £ recogrtiz? tnat tners are
diffi .cultise in ap ljinq the miniraui shell tnic ncss #or ce t,
it is rIevertfleLe 33 an i v’ ortant r ’ latory re uirement, an it
must be addressed in every t Ci A tank er it. I nope ti at
Region II will act to ensure that the rec uLr rneflt wLll not
wai’i.d in future der’nir.s a ue 1 y cfle !(e ion.
Plea$. let e if tnere are. any 4uest]ons.
cc i ter uerrer3
Terry •.ro n
Dave r gan
Dajan:dmt:12/ / 3: —‘ 3zdis c F3qan S
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