| Abstract: | Several pilot projects are being conducted as part of the National Water Quality Assessment (NAWQA) Program. The purpose of the pilot program is to test and refine concepts for a proposed full-scale program. Three of the pilot projects are specifically designed to assess groundwater. The purpose of this report is to describe the criteria that are being used in the NAWQA pilot projects for selecting and documenting wells, installing new wells, and sampling wells for different water quality constituents. Guidelines are presented for the selection of wells for sampling. Information needed to accurately document each well includes site characteristics related to the location of the well, land use near the well, and important well construction features. These guidelines ensure the consistency of the information collected and will provide comparable data for interpretive purposes. Guidelines for the installation of wells are presented and include procedures that need to be followed for preparations prior to drilling, the selection of the drilling technique and casing type, the grouting procedure, and the well-development technique. A major component of the protocols is related to water quality sampling. Tasks are identified that need to be completed prior to visiting the site for sampling. Guidelines are presented for purging the well prior t sampling, both in terms of the volume of water pumped and the chemical stability of field parameters. Guidelines are presented concerning sampler selection as related to both inorganic and organic constituents. Documentation needed to describe the measurements and observations related to sampling each well and treating and preserving the samples are also presented. Procedures are presented for the storage and shipping of water samples, equipment cleaning, and quality assurance. Quality assurance guidelines include the description of the general distribution of the various quality assurance samples (blanks, spikes, duplicates, and reference samples) that will be used in the pilot program. (Lantz-PTT) |
| Genre: | USGS Numbered Series |
| ProdID: | 19233 |
| Citation Author: | Hardy, M. A.; Leahy, P. P.; Alley, W. M. |
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| Citation Language: | ENGLISH |
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| Citation Phsyical Description: | iv, 36 p. :ill. ;28 cm. |
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| Citation Publisher: | U.S. Geological Survey, |
| Citation Series: | Open-File Report |
| Citation Series Code: | OFR |
| Citation Series Number: | 89-396 |
| Citation Search Results Text: | Well installation and documentation, and ground-water sampling protocols for the pilot National Water-Quality Assessment Program; 1989; OFR; 89-396; Hardy, M. A.; Leahy, P. P.; Alley, W. M. |
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| Citation Year: | 1989 |
| Type: | citation/reference |
| Text: | Well installation and documentation, and ground-water sampling protocols for the pilot National Water-Quality Assessment Program; 1989; OFR; 89-396; Hardy, M. A.; Leahy, P. P.; Alley, W. M. |
| URL (THUMBNAIL): | http://pubs.usgs.gov/of/1989/0396/report-thumb.jpg |
| URL (DOCUMENT): | http://pubs.usgs.gov/of/1989/0396/report.pdf |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
| Publisher: | U.S. Geological Survey, |
