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.M �y':,:� w:� - — �''vc•-s. -� =�k _ 2 -psi s - - L - WE v in a drive shoe which can be advanced and then retracted by means of a elide ,. hammer. The opnn ends of the sample liner, are covered with aluminum fall and plastic end cnpn. Excess aluminum foil in removed and the edge of the plastic and cap" is tightly aenled against the outer surface of the brava liner with an unbroken wrap trade with a tape,, which hots been tooted to. confirm that it doom not contribute compounds that would be detected In the type± of analyses intended for the sample contained inside of the brans liner. The brans liner In then labeled with the appropriate identification numbers which specify the sampling activity designation number, sample collection arse, depth etc, that apply to that particular sample. The sample liner Is then placed in an ice chest which contains pre-frozen Ulockm of on inert ice substitute such a Blue Ice or Super Ica. Water samples are collected in any of Goveral appropriate devices such as bailers, Coliwassa, Middleburg sampling pumps etc. which are described In detail only an warranted by their employment at a given alta. Sample liquid in decanted into now sample containers In a manner which reduces the loan of volatile constituents and follows the applicable EPIC procrdurta for handling volatile organic and semi-volatile compounds. Only two variations from the EPA methods are generally employed. First, preservative is ndded to the sample container prior to addition of the sample liquid. This method was a pioneered by Stoner Laboratories in 1982 and subsequently adopted by laboratories and mlivironmentai consulting firms as a practical means of reducing the time that a liquid is allowed to aerate prier to closure of the sampling container. Second, because testa have shown that the preservative readily mixes with sample liquid, glass stirring rods are not used to agitate the sample/preservative mixture. SAMPLE DESIGNATIONS t am t All samples containers are identified with both an activity number and n discrete sample identification. Pleane note that the activity number is the number that appears on our chain of custody. It is roughly'equivalent to a 4 Job number, but applies only to work done on a particular day of the year rather than spanning several days as an actual activity often docs. This is followed by the sample I.D. nutaber which is usually a simply number such as E CHAIN OF CUSTODY Samples are continuously maiuta'nod in either a chilled ice chest, refrigerator, or freezer frcm the time of collection until acceptance by the # State certified Hazardous Materials Testing Laboratory selected to perform the analytical proceduret.. It the samples are taken charge of by a different party (such as another person from cur office, a courier etc.) prior to being delivered to the laboratory, appropriate release and acceptance records are made on the chair. of custody (time, date, and signature of person releasing i the-samples-followed-by_the-time.-date-and-signature of-the-person-accepting --- -- TT custody of the samples). Sampling Report 88QS5-C-2 CIIEVRON 1918 page 10 i moil=M }