Sampling Methods. Requirements (B2)
Sampling Methods. Training Handbook. Tokyo: Statistical Institute for Asia and the Pacific (SIAP). Xxxxx, X. (1992). Household surveys in Europe: some issues in comparative methodologies. Seminar on International Comparison of Survey Methodologies, Athens. Luxembourg: Training of European Statisticians (TES). Xxxxx, X. (1993). Comparative surveys in Europe: problems and possibilities. Bulletin of the International Statistical Institute, vol. 55. Verma V. and X. Xxxxxxxxxx, (1993), Methodology of the European Community Household Panel, Statistics in Transition, 2(7), 1023-1062. Xxxxx, X., (1995a), Comparative surveys in Europe: problems and possibilities, Bulletin of the International Statistical Institute 49(2), 527-8. Xxxxx, X. (1995b). European Community Household Panel and other comparative social surveys in the EU. Euroconference on Social Policy in an Environment of Insecurity, Lisbon. European Association for the Advancement of Social Sciences. Xxxxx, X. (1995c). Structuring and integration of household surveys in the European Community. In The Future of European Social Statistics: Guidelines and Strategies. Luxembourg: Office for Official Publications of the European Communities, Eurostat Series 0D, (ISBN 92-827-4969-X). Xxxxx, X. (1997). Comparability in multi-country survey programmes. American Statistical Association Joint Statistical Meetings, Special Session in Memory of Xxxxxxxxx X.X. Xxxxxxxx, Anaheim, California, USA. Xxxxx, X. (1998). Robustness and comparability in income distribution statistics. Invited Paper, European Union High Level Think-Tank on Poverty Statistics, Stockholm. Verma V. (2001a), EU-SILC Sampling Guidelines. Report prepared for Eurostat. Verma V. (2001b). EU-SILC: Proposals for a survey structure for those countries beginning a new survey. Proceedings, WG conference Rolling Samples and Sampling in Time - Problems of Data Accumulation and Data Quality, Trier, Germany. Verma V. (2001c). The case for a Continuous Household Budget Survey. Proceedings, WG conference Rolling Samples and Sampling in Time - Problems of Data Accumulation and Data Quality, Trier, Germany. Xxxxx, X. (2002a). Comparability in International Survey Statistics. Keynote Address, International Conference on Improving Surveys, Copenhagen, 25-28 August. Xxxxx, X. (2002b). Comparability in Multi-country Survey Programmes. Journal of Statistical Planning and Inference, vol. 102(1), pp. 189-210. Xxxxx, X. (2004). Comparability of statistics at the international level: concepts...
Sampling Methods. Sampling requires the manual collection of grab samples using a Niskin Bottle at each of the monitoring locations. The complete sampling SOP appears in Appendix A. Sample containers and preservatives are identified in Table 7. Appropriate pre- cleaned sample containers will be used. Sample bottles and bottle caps will be protected from contact with solvents, dust, or other contaminants. Sample bottles for this project will not be reused. A field blank will be used to determine possible contamination during the sampling process. The sampling coordinator has responsibility for assessing the safety of sampling teams. A two-person team will conduct all sampling, and the sampling team will have access to a cellular phone in order to alert rescue agencies should an accident occur. Sampling will be postponed if the sampling team determines that the conditions are unsafe. Failure to collect a sample due to safety concerns or technical issues will be promptly reported to the Project Director, who will determine if any corrective action is needed and make arrangements to collect a replacement sample (if possible). The Quality Assurance Officer will document sampling failures and the effectiveness of corrective actions. Table 7. (Element 11) Sample handling. Analyte Bottle Type/Size Preservative Maximum Holding Time Chemistry Cu (dissolved) 125 mL HDPE Cool at <4oC Acidify <2 pH 4 h filtration and acidification, 6 months analysis Toxicity Mussel development test 1 L Polyethylene Cool at <4oC 36 h preferred, 48 h max
Sampling Methods. This section describes minimum procedures for sampling groundwater, soil , and soil -vapor for field and offsite laboratory analyses. A detailed description of the sampling methods shall be documented in the facility -specific work plan and shall be approved by the RWQCB Project Manager before sampling. When engaging in field sampling, RWQCB staff will follow the procedures in this secti on as incorporated into project -specific planning documents.
Sampling Methods. All measurements and sampling associated with monitoring activities will be conducted according to the TBWCF WQ SOP which is largely based on USGS National Field Manual water-quality protocols (Wilde et al, various dates) and the state of California’s Surface Water Ambient Monitoring Program (Xxxxxxx, 2002). Detailed information for each group of parameters (including specific field techniques for collection, preservation and analysis) is available in the following SOP (which is located in the Appendix C). SOP sections addressing Field, Sampling and Laboratory Activities: • Equipment and Field Preparations • Field Methods for Measurement of Core Parameters • Field and Laboratory Methods for Fecal Indicator Bacteria • Field and Laboratory Methods for Sampling Nutrients • Field and Laboratory Methods for Sediment • Field and Laboratory Methods for Discharge Measurements Samples and duplicate samples will be collected at the same time and place using the “grab” or “hand-dipped” method. Therefore samples will not be homogenized or composited before delivery to the laboratory facility for analysis. Preservatives will be pre-added to sample bottles by the contract laboratory. Samples sent to Xxxxxxx-Tiburon Center for trace-level nutrient analysis will be filtered in the field using methods described in the program SOP. The SOP section detailing Equipment and Field Preparations addresses the maintenance, cleaning, and calibration of field sampling equipment. Product manuals for the equipment also give guidance on proper cleaning procedures. These directives will be followed by field staff. While sampling in the field, a bottle of distilled water will be used to rinse probes and sensors between sites. Bottles used for sampling are provided by the laboratory and thus have been cleaned and treated according to the appropriate standard methods. Problems that occur with equipment will be addressed by the Program Manager with assistance from the Technical Advisor(s). This may include cleaning, re-calibration, and or sending equipment to company for repairs. If equipment is being repaired and a different instrument is used in the interim, this will be documented in the data sheet for each sampling station/event. Field QA audits will be conducted periodically by a member of the WQTAC. If any deficiencies within a crew are noted during this QA audit, they will be documented and remedied prior to continued field sampling. This can be accomplished by additional training or...
Sampling Methods. This section describes the recommended methods and procedures that will be used to collect samples, including the QA/QC samples. All samples will be handled in accordance with EPA-approved procedures and chain-of-custody guidelines. Methods have been selected to provide the required precision, accuracy, and detection limits to meet the objectives of this project. All field measurements will be performed by qualified, trained individuals with calibrated instruments and within appropriate analytical holding times.
Sampling Methods. The field investigations and sample collection activities under the project will adhere to applicable SOPs and available EPA guidance and will be described in the site-specific work plan and/or SSQA. The site-specific work plan will indicate the location, type, number and media of the samples. Manufacturer’s specifications and operational instructions, other agency SOPs, other methods, instructions, including professional or scientific technical standards, may also be used for specific field analytical equipment, geophysical equipment, surveying instruments, etc. with no existing SOPs or EPA guidance upon approval of the BVCP Project Manager. The site-specific work plan will specify sampling methodologies and procedures used.
Sampling Methods. In addition, within a period of 60 days from the execution date of this Amendment, the parties shall document two mutually agreeable and statistically valid methods of sampling for posting errors that are consistent with industry practice - a method that is agreed to be appropriate to determine accuracy of Vision's posting overall on a monthly basis against the specifications agreed above for purposes of Monthly Overall Accuracy Review (as set forth in Section 4(b)(v) below), and a method that is agreed to determine accuracy of specific types or aspects of posting against the specifications agreed above for purposes of Focused Accuracy Review (as set forth in Section 4(b)(vi) below). Athena may develop and provide documents from time to time explaining in detail alternative or proposed sampling methodologies that Athena wishes to use in connection with Section 4(b) (v), (vi) or (vii) below and that Athena believes in good faith are reasonably designed to determine whether errors or patterns of error exist, for Vision's review.
Sampling Methods. The following sampling guidelines are from the CCAA/CCA. For additional background on monitoring and sampling, we recommend Measuring and Monitoring Plant Populations by Xxxxxxx et al. BLM Technical Reference 1730-1. This guidance provides an overview of random selection of sites, transects, estimating cover, and other important monitoring considerations. • Sample Plot Location and Size Plot locations will be randomly or systematic-randomly selected by the Partner prior to the time of survey. Plot locations occur in sites or management areas and are distributed to ensure geographic dispersion of sample plots to represent the entirety of a Partners’ enrolled lands. It is the Partner’s responsibility to determine how to distribute and randomize plot locations. Randomization of plots is intended to remove bias in the selection of plot locations prior to sampling in the field as explained in the following protocol. When planning distribution of sample plots, Partners must consider several key decision factors:
Sampling Methods. All bacteria samples are aquatic samples. They will be collected as grab samples using sterile jars from approximately mid-stream and from just below the water’s surface. The sterile sample jars hold 120-mL and are made from high density plastic. They are purchased from IDEXX laboratories for use with the IDEXX testing system. The sealed, sterile jars contain sodium thiosulfate to neutralize chlorine present at some sampling sites. These bottles are used once and then disposed of. When samples are collected, the volunteer makes sure to leave some headspace in the jar. To collect samples to be split, a larger volume of water is required. Larger, 250-mL autoclavable bottles are used for sample collection. The bottles are autoclaved between uses to ensure that they are sterile. Samples are inverted and then 100 mL is decanted into each of two IDEXX 120-mL jars prior to analysis. Excess sample can be disposed of down the drain. Bacteria monitoring requires a wet lab with an autoclave, incubators and a source of sterile deionized water. MBNEP bacterial analysis by program volunteers is conducted at the Morro Bay-Cayucos Wastewater Treatment Plant Laboratory. Plant personnel operate the facility’s autoclave to provide the sterilized glassware and deionized water needed for analysis. If it is determined that the sample collection method is introducing error into the results, the MBNEP QA Officer will reassess both the monitoring protocol and how the volunteers follow the protocol. If a source of error is identified, the protocol will be revised and volunteers will be re-trained. For water quality monitoring, measurements are taken from approximately mid-stream and from just below the water’s surface. All sampling equipment is rinsed with deionized water upon completion of the monitoring. All monitoring and analysis is conducted in the field. If water samples are collected for quality assurance purposes, they are collected from mid-stream, just below the water’s surface. A large, clean container is used to collect a single sample. The sample is gently mixed and then split. A portion is used for the volunteer’s analysis, and a portion stored in a clean container provided by the laboratory for one-time use. All samples are aqueous samples. Excess sample is disposed of by the lab. Other than the field equipment, no special equipment or facilities are required for analysis. If it is determined that the sample collection method is introducing error into the results, th...
