Urban Storm-Induced Discharge Impacts: US Environmental Protection Agency Research Program Review

1990 ◽  
Vol 22 (10-11) ◽  
pp. 1-7 ◽  
Author(s):  
R. Field ◽  
R. E. Pitt
Keyword(s):  
Environmental Protection ◽  
Environmental Protection Agency ◽  
Urban Runoff ◽  
Program Review ◽  
Coliform Bacteria ◽  
Protection Agency ◽  
Toxic Heavy Metals ◽  
Aquatic Life ◽  
Available Information ◽  
Water Problems

Fecal coliform bacteria (and pathogens), high flow rates, sediment, toxic heavy metals and organic pollutants are most commonly associated with urban receiving water problems. Most beneficial uses have been shown to be adversely affected by urban runoff, including shell fish harvesting, fish and aquatic life propagation, drinking water supplies, aesthetics and recreation. Most of the problems occur over long periods of time and are not associated with individual runoff events, making cause and effect relationships difficult to study. The Storm and Combined Sewer Program of the U.S. Environmental Protection Agency has sponsored several long-term research projects to investigate these problems, along with data reviews to identify urban runoff problems from available information. Current research efforts are stressing sources and controls for toxicants in urban runoff.

scholarly journals Phenotypic and Phylogenetic Identification of Coliform Bacteria Obtained Using 12 Coliform Methods Approved by the U.S. Environmental Protection Agency

2015 ◽  
Vol 81 (17) ◽  
pp. 6012-6023 ◽  
Author(s):  
Ya Zhang ◽  
Pei-Ying Hong ◽  
Mark W. LeChevallier ◽  
Wen-Tso Liu
Keyword(s):  
16S Rrna ◽  
Environmental Protection ◽  
Environmental Protection Agency ◽  
Coliform Bacteria ◽  
Phenotypic Traits ◽  
Rrna Gene ◽  
Growth Responses ◽  
Protection Agency ◽  
Content Type ◽  
Group I

ABSTRACTThe current definition of coliform bacteria is method dependent, and when different culture-based methods are used, discrepancies in results can occur and affect the accuracy of identification of true coliforms. This study used an alternative approach to the identification of true coliforms by combining the phenotypic traits of the coliform isolates and the phylogenetic affiliation of 16S rRNA gene sequences with the use oflacZanduidAgenes. A collection of 1,404 isolates detected by 12 U.S. Environmental Protection Agency-approved coliform-testing methods were characterized based on their phylogenetic affiliations and responses to their original isolation media and lauryl tryptose broth, m-Endo, and MI agar media. Isolates were phylogenetically classified into 32 true-coliform, or targetedEnterobacteriaceae(TE), groups and 14 noncoliform, or nontargetedEnterobacteriaceae(NTE), groups. It was shown statistically that detecting true-positive (TP) events is more challenging than detecting true-negative (TN) events. Furthermore, most false-negative (FN) events were associated with four TE groups (i.e.,Serratiagroup I and theProvidencia,Proteus, andMorganellagroups) and most false-positive (FP) events with two NTE groups, theAeromonasandPlesiomonasgroups. InEscherichia colitesting, 18 out of 145E. coliisolates identified by enzymatic methods were validated as FN. The reasons behind the FP and FN reactions could be explained through analysis of thelacZanduidAgenes. Overall, combining the analyses of the 16S rRNA,lacZ, anduidAgenes with the growth responses of TE and NTE on culture-based media is an effective way to evaluate the performance of coliform detection methods.

Evaluation of Colilert-18® for Detection and Enumeration of Fecal Coliform Bacteria in Wastewater Using the U.S. Environmental Protection Agency Alternative Test Procedure Protocol

2011 ◽  
Vol 94 (5) ◽  
pp. 1573-1580 ◽  
Author(s):  
Paul S Warden ◽  
Monique S DeSarno ◽  
Sarah E Volk ◽  
Bradley J Eldred
Keyword(s):  
Environmental Protection ◽  
Environmental Protection Agency ◽  
Fecal Coliform ◽  
Alternative Methods ◽  
Coliform Bacteria ◽  
Protection Agency ◽  
Standard Methods ◽  
Fecal Coliform Bacteria ◽  
Alternative Test ◽  
The U.S

Abstract This study compared recovery of fecal coliform bacteria from sewage by Colilert-18® and Standard Methods 9222D (membrane-Fecal Coliform medium) in accordance with the U.S. Environmental Protection Agency (EPA) Alternative Test Protocol (ATP). Samples were collected from 10 different wastewater treatment plants in the northeastern United States and tested in a single laboratory. Twenty replicates of each sample were analyzed by each method, and 200 positive and 200 negative responses were confirmed for each method. Recovery of fecal coliforms by Colilert-18 was significantly higher than (8 of 10 sites) or statistically equivalent to (1 of 10 sites) recovery by the reference method (Standard Methods 9222D) for samples from all but one site. Both methods had low false-positive rates (<2%); however, the false-negative rate observed with Standard Methods 9222D (21.5%) was substantially higher than that observed with Colilert-18 (7%). The accuracy rates of the two methods were calculated as 96.5 and 88.9% for Colilert-18 and Standard Methods 9222D, respectively. The results of this study demonstrate that Colilert-18 meets the acceptance criteria for alternative methods specified in the EPA ATP.

Development of biotic ligand model-based freshwater aquatic life criteria for lead following US Environmental Protection Agency guidelines

2017 ◽  
Vol 36 (11) ◽  
pp. 2965-2973 ◽  
Author(s):  
David K. DeForest ◽  
Robert C. Santore ◽  
Adam C. Ryan ◽  
Brian G. Church ◽  
M. Jasim Chowdhury ◽  
...  
Keyword(s):  
Environmental Protection ◽  
Environmental Protection Agency ◽  
Biotic Ligand Model ◽  
Protection Agency ◽  
Aquatic Life ◽  
Model Based ◽  
Biotic Ligand ◽  
Ligand Model

Municipal Wastewater Treatment Technology Transfer Activities of the United States Environmental Protection Agency

1989 ◽  
Vol 21 (6-7) ◽  
pp. 685-698
Author(s):  
J. J. Convery ◽  
J. F. Kreissl ◽  
A. D. Venosa ◽  
J. H. Bender ◽  
D. J. Lussier
Keyword(s):  
Technology Transfer ◽  
Environmental Protection ◽  
Case Studies ◽  
Environmental Protection Agency ◽  
The United States ◽  
Environmental Research ◽  
Outreach Program ◽  
Small Community ◽  
Protection Agency ◽  
Transfer Programs

Technology transfer is an important activity within the ll.S. Environmental Protection Agency. Specific technology transfer programs such as the activities of the Center for Environmental Research Information, the Innovative and Alternative Technology Program, as well as the Small Community Outreach Program are used to encourage the utilization of cost-effective municipal pollution control technology. Case studies of three technologies including a plant operations diagnostic/remediation methodology, alternative sewer technologies and ultraviolet disinfection are presented. These case studies are presented retrospectively in the context of a generalized concept of how technology flows from science to utilization which was developed in a study by Allen (1977). Additional insights from this study are presented on the information gathering characteristics of engineers and scientists which may be useful in designing technology transfer programs. The recognition of the need for a technology or a deficiency in current practice are important stimuli other than technology transfer for accelerating the utilization of new technology.

The Hornsby Bend Hyacinth Facility in Austin, Texas

1987 ◽  
Vol 19 (10) ◽  
pp. 41-49 ◽  
Author(s):  
Ray Dinges ◽  
Jim Doersam
Keyword(s):  
Environmental Protection ◽  
Environmental Protection Agency ◽  
Plant Material ◽  
Animal Species ◽  
Performance Data ◽  
Operational Performance ◽  
Fish Production ◽  
Protection Agency ◽  
Functional Characteristics ◽  
The City

The Hornsby Bend Hyacinth Facility, the first such system built under the U. S. Environmental Protection Agency “Construction Grants Program”, represents the culmination of over a decade of experience at the City of Austin with hyacinth treatment. The facility consists of three culture basins 265 m in length with an area of 1.6 ha. To permit year-round hyacinth culture, basins are covered with a 2.06 ha unitary greenhouse structure. Fenced exclusion areas at intervals along sides of basins serve as natural aerators and enhance fish production. The system, operated in an aerobic mode, was designed to daily treat about three million liters of sludge lagoon supernatant. Exclusion of large vertebrate predators and stocking of basins with selected animal species will provide a unique ecosystem. Basins were planted with hyacinth in late October, 1985 and discharge commenced on February 3, 1986. Functional characteristics and ecological considerations of the facility are discussed and operational performance data are presented. Maintenance harvesting of hyacinth and disposition of plant material are described. Application of greenhoused hyacinth treatment systems are addressed.

Sign in / Sign up

Export Citation Format

Share Document