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-i .�' �� , ,' :. � ,s.rt' s c«."�. sz-'��.,..,, rEv. _,�• -, s � „� `r x_°ffi - -��`4eEa its-..es�s-�� n�« `�'..�, � ..,��' Ytl L sex` x d. i:. in n drive xYoo which can be advancerri and than ratracted by senna of to slide hAmmor. The open ends of the sample liner are cnvered with alumInk, (sell and piratic end caps. Excess aluminum loll Is removed and the edge of the plastic and cap* is tightly sealed against the outer surface of the bramo liner with an unbroken wap made with a tape which has boon tasted to confirm that it does not contribute cQmpounds that would be, datocterd In the tyke of anslysos Intended for the ssmplo contained inside of the brass liner. 7110 brass liner is than labeled with the approprlete Identification numbers which sclfy the aesrrspliag activity dasaignatfon nun+ber, sarslpla collection arcs, depth etc.. that apply to that particular sanple. The sample liner is than placed in an Ice chest which conthfna pre-frozen blocks of an inert ice aubrtitutn such a Blues Ice or Super Ice. Water samples are collected in any of several appropriate devices such at batters, Cvii+waar.s. Middleburg sampling pumps etc. which are described in detail only a►_ warranted by their employment at a given site. Samplo liquid is decanted into new sample containers In a manner which reducfe the lose of volatile conatituenta and follows the applicable EPA procedures for handling volatile organic and semi-volatile compounds, Only two variations from the EPA methods are generally employed. First, preservative In wAdad to the sample container prior to addition of this sample liquid. This method was pioneered by Stoner Laboratories In 1982 and subsequently adopted by laboratories and environmental conaulting firms as a practical means of reducing the time that is liquid is allowed to aerate prior to closure of t, a sampling container. Second, because teats have shown that the preservatives readily mixes with e•-Iraple liquid, glass stirring rods are not used to agitate the sample/prex*rvaLive mixture. SAMPLE WSSICNATIONS All samples containers are 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 as an actual activity often does. This is (allowed by the sample I.D. number which In usually a simple number auth a.2 Cl'A N OF CUSTODY Samples are continuously maintained in either a chilled ice cheat, refrigerator, or freererr frost the tisma of c-silection until acceptance AY the State certified Hazardous Materials 'fasting Laboratory selected to perform the analytical procedures. if the samples are taken charge of by a different ------_-__-- r_ irons our office, a courier etc.) prior to being delivered to the laboratory, appropristo release and acceptance records aria -- --..- - - made on the chain of custody (time, date, and signature of person releasing the samples followed by the time, date and signature of the persons stcepting ,custody of the samples). Sampling Reports 8St7.'It5-0-2 CIIFsvIi N 1918 para 10