Surface water quality parameters for monitoring oil shale development /

Mode of access: Internet.

Ground-water quality and geochemistry of Las Vegas Valley, Clark County, Nevada, 1981-83 : implementation of a monitoring network /

Mode of access: Internet.

Regulatory water quality monitoring networks : statistical and economic considerations /

Mode of access: Internet.

Non-point source water quality monitoring, Inyo National Forest, 1975 : a progress report /

Includes bibliographies.

A guide to the selection of materials for monitoring well construction and ground-water sampling /

"August 1983."

Dynamic modeling and monitoring of water, sediment, nutrients, and pesticides in agricultural watersheds during storm events /

"Contract report 655"--Cover.

Hydrology, nutrient, and sediment monitoring for Hurricane and Kickapoo Creek watersheds, water year 2000-2002 : pilot watershed program /

"Prepared for the Illinois Dept. of Natural Resources."

Station locations and periods of record, IEPA ambient water quality monitoring network /

Mode of access: Internet.

Surface water pesticide monitoring of Illinois streams : summary of results 1985-1998 /

This report provides a review and summarization of stream pesticide data collected by the Illinois EPA Ambient Water Quality Monitoring Network between October 1985 and December 1998. A list of sampling stations is provided in Appendix A along with data from the seven most detected pesticides which are provided in Appendix B.

Water resource data and trend analysis for the Highland Silver Lake comprehensive monitoring and evaluation project : Madison County, Illinois, phase IV /

"IEPA/WPC/86-001."

Water resource data and preliminary trend analysis for the Highland Silver Lake monitoring and evaluation project : Madison County, Illinois, phase III /

"IEPA/WPC/84-030."

Water resource data and preliminary trend analysis for the Highland Silver Lake monitoring and evaluation project : Madison County, Illinois, phase I /

"November, 1982."

Coastal recreation water quality monitoring and notification : report (to accompany H.R. 1721) (including cost estimate of the Congressional Budget Office).

"November 14, 2005."

Geohydrology of the Antelope Valley Area, California and design for a ground-water-quality monitoring network /

Mode of access: Internet.

Multivariate monitoring of a biological wastewater treatment process: a case study at Melbourne Water's Western Treatment Plant

Biological wastewater treatment is a complex, multivariate process, in which a number of physical and biological processes occur simultaneously. In this study, principal component analysis (PCA) and parallel factor analysis (PARAFAC) were used to profile and characterise Lagoon 115E, a multistage biological lagoon treatment system at Melbourne Water's Western Treatment Plant (WTP) in Melbourne, Australia. In this study, the objective was to increase our understanding of the multivariate processes taking place in the lagoon. The data used in the study span a 7-year period during which samples were collected as often as weekly from the ponds of Lagoon 115E and subjected to analysis. The resulting database, involving 19 chemical and physical variables, was studied using the multivariate data analysis methods PCA and PARAFAC. With these methods, alterations in the state of the wastewater due to intrinsic and extrinsic factors could be discerned. The methods were effective in illustrating and visually representing the complex purification stages and cyclic changes occurring along the lagoon system. The two methods proved complementary, with each having its own beneficial features. (C) 2003 Elsevier B.V. All rights reserved.