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T'.-a�� _,. rck� '. -,xi`^�- _F_ R,4`.�". :€=' .- xz-=.'� `«�y� rt: _� .�p- ^� � '— �•-`� y _ -z�:: sw� `:c:.- k,�. -_s 'a. -.3z�";:..•q- .,3 -� s �- ..y.. _ . .w•,^; +. ""8u � � WORA'1ORY IDF.":T1VICATIO?4 Nt1MOF171 i Following rrcelp€ of the anmplea And completion of the Chain of Cuatouy form, the laboratory theis annigns their own Idantifscation numbers to the samples. Different laboratories vote different numbering systema and, according to their own interna; convintiona, may or may not. assign sequential numbers to samples which are placed on temporary "hold", pending the results of other analyses. Laboratory identification numbers (if assigned and availablo) Are Included In the TABLE, and will be found on the certified analytical report INS by the analytical laboratory. CERTIFIED ANALYTICAL REPORT The certified %nalyUcAl report ;CARS generated by the laboratory Is the official document in which they lacue their findinga. The Results of Analyssen ataction of the TA11LE OF SAMPLING LOCATIONS AND k4ALYTICAL RESULTS should correspond exactly with the laboratory's CAR. Any discrepancy between anAlytiral values should be deckled In favor of the CAR. for while it may, itself. be In error with regard to A particular number. the CAR remalnao the recognized document until such time ass It Is amended with a corrected report. The certified analytical report should also be reviewed whers samples are taken from below wants oil tanks as e= detection of the EI'A halogenated and ' purgeablo aromatic compounds may be grounds for requiring further oction. Also the TABLE OF SAMPLING LOCATIONS AND ANALYTICAL RESULTS is insufficiently spacious to allow anything more that a ,simple listing of the detected compounds. The TABLE does not include such information as the detectiin limits at which other compounds were not detected. The full text of the Inboraatory report will be found in Section Four of this report. GENERAL ADVISORY ON POSITIVE RESULTS Though our firm specializes In sampling. monitoring and documentsatlon, rather than interpretation And remediation, we have been asked by the engineering staff of the Regional Water Quality Control Board to Include In our reports an advisory section outlining the general type or additional actions which may be required when cnntaminstion 14 found. This advisory In not intended to characterize conditions at t'els particular site or replace the services of u consulting firm speciali.ing In the investigation, characterization and resaed.atlon of such conditions as may exist. Rather, It is Intended to advise you that such additional actions may be required even though some time may claps* before you are contacted by one of the Interested regulatory agencies. In Region x (which Is regutatesd by the Son Francisco Foglonal water Quality Control Board,) the thresholds are readily defined In the Board's publication, SULtLtU=2 f2r l,tuiteg LW o R. According to this document, Boll which has ls+xs than 100 parts per milllun total petrolaum fuel Satspling R4pert 8305-0-2 CHEVRON 1916 Maga 11