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 n nFpp n lfl 1QMF D ‘ DIR ECTIVE DIRECTIVE ------- 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. ------- 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 ------- 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 ------- 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. ------- 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 ------- |