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..................... 71- ME 5.,..firM� KE MORE A la am W Water ntimplett are collected in any of neveral appropriate devicen ruck III ballorts, collwagan, 1,11d(fln-burg unitipling purnpu etc, which are described in detail only an warranted by their employment at a given alta. Sample liqui(I Ft dee-nnied Into now nnmple ccntain6ra In ft manr.nr which reduces the loan g'lt c0lutittlenta and follow volatile organic and sera[-vointin the APPlicabl'.1 FPI,, Procedures for handling In compounder, Only two variations from the EPA rnothodn are generally employed. First, preservative In added to the sAmPlo container prior to addition of Pioneer the sample liquid. This method wan ed by Stoner Laborntorlou in 1982 and subsequently adopted by laboratori.9a and anvironmentaI consulting firmn an a Practical means of reducing the time that a liquid is allowed W aerate prior to clonure of the Oampling container, Second, because t0et8 have shown that the preservative readily mixes with sample liquid, Klaus aLirring rods are not used to agitate the sample/preservative mixture. SAMPLE DESIGNATIONS All samples containers ore identified with both an activity number and a discrete sample Identification. Please note that the activity number is the number that appears on our chain of custody. It Is roughly equivalent to a Job number, but applies only to work done on a particular day of the Year rather than spanning several days an an actual activity often does followed by the armple I.D. number which - This is 81, 82, ,13. 18 tl&ually a cf'nPIO number such an CHAIN OF CUSTODY li Samples are continuously maintained In either a chilled ice chest, refrigerator, or freezer from the time Of collection until acceptance by the State certified Hazardous Materials Testing Laboratory selected to Perform the analytical Procedures. If the samples are taken charge of by a different party (such as: another person from our office, a courier, etc.) prior to being dellverecl to the laboratory, appropriate release and acceptance records are made on the chain of custody (time, date, and signature of parson releasing the samples followed by the time, date and signature of the person accepting custody of the samples). LABORATORY IDENTIFICATION NUMUnRS Following receipt of the samples and completion of the Chain of Custody form, the laboratory then assigns their own identification numbers to the aample s. Different laboratories use different numbering systems and, according to their own Internal conventions, may or may not assign sequential numbers to samples which are Placed on temporary-"hold",-pending-the -results-or other- Ona --Laboratory-identification numbers (if assigned and available) are Included in the TABLE, and will be found an the certified analytical report by the analytical laboratory. Sampling Report 88342-C-1 CHEVRON 1918 SECTION FIVE/page 10