SITE INFORMATION AND CORRESPONDENCE 1991-1992

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t • 1 • W ref '+r". " -.. :':e .ZL- a I i ^,_amu _:"..,-• , , -r.,. " .fit`; * I ? §761.125 40 CFR Ch. 1 (7-1-91 Edition) Environmental Prot as required by §761.125(a)(1) or by accordance with paragraphs (c)(2)(i) . ot01)her applicable statutes, and (ii) of this section. Conformance UU)At the option tivelyThe cordon off ble or otherwise del'y shall effec- to the cleanups under Parts. dace WW' Braphs (c)(2)(i) and (fi) of this section visas surfaces WW't este and restrict an area encompassing shall be verified by post-cleanup sam- 10 149/100 can= or any visible traces plus a 3-foot buffer piing as specified under §761.130. At and encapsulated. and place clearly visible signs advisingP Mated' such times as outdoor electrical sub- I t�i�t°r, howew Persons to avoid the area to minimizestations are converted to another use, o tion for disallow the spread of contamination as well as the spill site shall be cleaned up to the up Partic the Potential for human exposure. - pon finding that tl --.- (iii) The responsible party shall nonrestricted access requirements i sociated with that r record and document the area of visi- under paragraph (c)(4) of this section. concerns at that sit ble contamination, noting the extent (1) Contaminated solid surfaces Bfonal Adtnlnlstrato of the visible trace areas and the (both Impervious and non-impervious) encapsulation if h center of the visible trace area If shall cleaned to a PCB oncentra- that if the encaps there are no visible traces, the respon- (ion of 100 .micrograms (µg)/1o0 failure would Cre: sable art shall a off this fact and square centimeters (Cm2) (as measured hazard at the site. Party by standard wipe contact the regional office of the EPA Pe tests). fiv) Lawcontact, for guidance in completing statistical (h) At the option of the responsible (both impervious m sampling of the spill area to establish Party soil contaminated by the spill shall be cleaned to 1 spill boundaries. will be ct (v> Soil i• (iv)The by weight or to 50 contamin " ''' responsible Party shall initl- a jht ppm PCBs by be Cleaned to :,.a-� � ate cleanup of all visible traces of the w�� -s t " pm -- Heim„ I weight. fluid on hard surfaces and initiate re- fs visibly placed In the area. Upon (4) Requirements moval of all visible traces of the spill demonstration by the responsible tug spills in no- on soil and other media, such as Party that cleanup to 25 ppm or 50 areas. Spills which gravel,sand,oyster shells,etc. PPM will Jeopardize the integrity of tricted access lova (v) If there has been a delay in the electrical equipment at the substa- under 1761.123, sh reaching the site and there are insuffi- tion, the EPA regional office may es- nated in accordance O,,, .�Y tient visible traces of PCBs remaining tablish an alternative cleanup method (c)(01) through (v at the spill site, the responsible party or level and Place the responsible Conformance to the must estimate (based on the amount Party on a reasonably timely schedule at Paragraphs (c)(4; of material missing from the equip- f om etion of cleanup this section shall bf ment or container) the area of the (3) Requirements for decontaminat- cleaouP sampling a spill and immediately cordon off the in9 spills in other restricted access ii 761.130. . area of suspect ontaimination. The areas. Spills which occur in restricted (1) Purnishings, responsible party must then utilize a access locations other than outdoor easily replaceable .A. statistically based sampling scheme to electrical substations, as defined under shall be disposed of rs"z identify the boundaries of the spill 4 761.123, shall be decontaminated 1n the provisions of 17 area as soon as practicable. accordance with paragraphs (c)(3) (i) by the responsible p; (vi) Although this policy requires through (v) of this section. Conform- (Il) Indoor solid s certain immediate actions, as de- ance to the cleanup standards In para- contact outdoor soli, sY' scribed in p as high contact re Paragraphs(c)isno through graphs (shat (b through (v) of this tial surfaces under `z (Iv) of this section, EPA 1s not placing section shall be verified by Post- e a time limit on completion of the cleanup sampling as specified under Cleaned to 10 µg/100 cleanup effort since the time required 1761.130. At such times as restricted by standard wipe tea for completion will vary from case to access areas other than outdoor elcc- (ill) Indoor vault case. However, EPA expects that de- trios] substations are converted to an- tom• outdoor, imp, 1 contamination will be achieved other use, the spill site shall be faces shall be deco Promptly in all cases and will consider cleaned up to the nonrestricted access IL91100 emg. promptness of completion in determin- area requirements of paragraph (c)(4) (tv)At the option .;- Ing whether the responsible of this section- Party, low-contact, o Party vious solid surface: made Bond faith efforts to clean up in (I)High-contact solid surfaces, as de- p;«; ;, accordance with this policy. fined under §761.163 shall be cleaned cleaned to 10µg/100 100£n 2s Requirements for decontaminat- to 10 µg/100 Cm= (as measured by /100 cm' and rt.; ;, 9 .pills in outdoor electrical substa- standard wipe tests)- Regional Administn z'XL Lions. Spills which occur In outdoor (it) Low-contact, indoor, impervious ains the authority I -u:•. .. electrical substations, as defined under solid surfaces will be decontaminated Psulation option ' §761.123, shall be decontaminated In to 10µg/100 cm', spill situation upon uncertainties assoc u 402