Laserfiche WebLink
SECTION II <br /> SAMPLE HANDLING <br /> A. Collection <br /> Sampling equipment, appropriate containers and preserva- <br /> tives, and careful monitoring of holding times are a fess of <br /> the points which must be considered to minimize possi•- <br /> bilities for contamination or other threats to the <br /> integrity of the sample. Quality assurance begins with <br /> experienced field personnel. Sample bottles are clearly <br /> marked and all pertinent observations recorded along with <br /> the sample description, time, date of collection, and <br /> initials of the collector. <br /> To assure proper container selection and appropriate <br /> application of preservatives,"field personnel and sample <br /> f _ control officers are provided with EPA container and <br /> preservation guidelines. The rules they follow are <br /> contained in Table II of 40 CFR Part 136 (Federal Register, <br /> i Friday, October 26, 1984) . Special containers, such as <br /> vials for volatile organics and amber glass bottles ! <br /> pretreated for organic priority pollutant analysis, are <br /> purchased from suppliers who provide certificates of <br /> compliance with EPA regulations. <br /> i <br /> B. Control and Custody <br /> Verification of sample integrity is one of the main respon- <br /> sibilities of the sample control officer. The sample is <br /> inspected to see that: <br /> 1. The sample is clearly marked and dated. <br /> 2. The sample was collected in an appropriate <br /> 1 container for the individual analysis, whether it <br /> be glass, plastic, or a special vial to avoid <br /> headspace. <br /> 3. The sample is properly preserved. <br /> 4. There is sufficient volume to do all the analyses <br /> required. <br /> If the above conditions are met, the sample will .be •given a <br /> log number and the relevant information is recorded. If <br /> II-1 <br />