CORRESPONDENCE_1984-1989 - Laserfiche WebLink

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I N tee,, _,gin too. .ate: /ib'tt Page 1 C 6 -6.0 QUAL 1T -i CONTROL 1N'SETAMPt 1NG 6.1 General Procedure Sample collection is an integral part of the laboratory process. ;he coals cf ecod sampling techniques involve c-btainIng sample= ch rer,reser,t the rratr. }: beln7 tested ar.. the tllrrilnatl4ri c trace leve i s c` contarrInants from exttrnal sourcts. .o ensu -e tr:ese coals are being met for each sample corning into tr:e laboratory, specific sampling procedures required by each method are carefully followed, as. outlined in the standard cperat;r,_ prccedures on 'ile. All additions and modifications to tt.tse procedures m;;st t.e approved by tnt Fieic Services Section SL;perviscr, the Q.A. Officer, and the Analytical Director. Samplers maintain a log of sarnpling date, time, location, semp'e ty.e, and any unusual details with retard to each sampling 'equest. Sample Containers are marked Lo inciCate sem®ling daft, time, and location. A chain -of -custody record begins at the time tech sample .s transferred to Multi -Tech personnel (Field Services cr .e^rle R*ceivinc). he same prctocois pertaining to cnain-cf-custcey apply when a client's chain-cf-custody is used. 6.2 Sampla Preservation To prevent or retard the degradation and/or modification of chemicals in samples during transit and storage, the samples are preserved and stored as outlined in the methods being used for the analysis of the sample. Efforts to preserve the integrity of the samples are initiated at the time of sampling and continue until the analyses are performed. Those samples containing organic compounds are preserved immediately by refrigeration and storage in glass bottles with teflon -lined caps. These bottles and caps are cleaned as outlined by standard operating procedures based on the procedures outl i ned._i n. the__Cal_i f orni a __De.pa.rtm_ent_ of Health Services AS 1803 publication.