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'- �. �•.s�x ,mw�?"��'"��r�..��t� .,�. �a''.' w � � -: ^'��7 _ g ,- � -.-_. c-.::, -: •-.�� --h .. .. � ,,:,�t _. ,.c.��a� :R § :"�:`%x �s-�*.- ��- rte �� dire>ctod thnt no s+nrnplwp be taakeen until the Pit had bean eexcnvnted to sa groAter depth. Thin conformo with commoia clennup dfrnctivee to either remove all f tel contnminnted mntarinlis or extend the pit to the futthnot practiblr extent of excavation, :. Thn LIA requested only a single *ample from below the utetate oil tank. This trample was obtaii,ed from the fill pipe- end of the tank. D IA61? AMfi A TA D 6 H 5 Graphic and Tabular pronantAtion of tall sa mpiea The TABLE OF SAMPLING LOCATIONS AND ANALYTICAL RESULTS roll** on a *ystom of designated SAMPLING AREAS which are specific tocstlono on the alto which correaEsond to the fuel dispensing lectures that were originally in Place there. Dritifly, the tanks tare assigned a letter and a suffix which comprise a de3sct iptive Identification. Evan when the Lanka have bean removed, all ssamplen taken in thrat area of the alto ares referenced to that particular SAMPLU G AREA which can bas cross rafArenced to construction blueprints. permit drawings and similar document:,. DIAGRAM ONE chowa the lavation of key features of the s.te including streets, property linea, and the location of undarground stowage tanke. 'Ina diagram shows that each innk has been assigned an arbitrary letter designation (Tenk A, Turek D etc.). This simplifios communications concerning a particular to by providing n nomenclature that does not rely on descriptions by alae .and tank contents. DIAGRAM Two dhows a finer level of detail. A descriptive suffix in added to the tark Identification letter, in order to designate a SAMPLING AREA at that particular end of that tank. For axnmptn, Tank A Is givers an F = suffix to Indicate the fill pipe end and AF is used to define the area in which saamplos are taken. The sigpoafte and of the tank from the fill pipe is given an OP suffix, and that SAMPLING AREA is, thereafter, referred to as Aop. The approximate midpoint of the tank iu given can M suffix if a sample Is taken from that location. The location of stockpiled material orad the Individual sampling Points is also shown on Diagram Two. The relationship between a given tank and Its sample collection pealrttta its z0ra precisely illuatrated In she UNDERGROUND STORAGE TANK REMOVAL AND 3A*SPLI'G LOGS. A lost sheat is filled out for each of the tanks that was riMraved from the site. The log oheets contain and views and cross sections - - -- ---------of *t%ch- tank-which-graghicatly-depict-the--SAMPLING AkLAS-at tach-end of that--- - T-- tank. i+henever hales are discovered In a tank during either removal or a past-removal inspection, the location of the holes I* indicrated on the TSR projection. =; -01 SAmpling Report 10055-C-2 CHEVRON 1918 page �