ASCE Manual 85 96 1996

$31.42

Manual of Practice No. 85: Quality of Ground Water

Published By	Publication Date	Number of Pages
ASCE	1996	7

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Category: ASCE

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Description

The Task Committee on Contaminated Ground Water Modeling was approved in September 1990 by the Executive Committee of ASCE’s Environmental Engineering Division with the express purpose of assessing widely used models of contaminated ground water. In order to accomplish this, the committee first surveyed the professional community to determine which models are in frequent use; it then classified these models according to a unified set of criteria that they had developed. Based on these criteria, the task committee created guidelines for the application of the models that include the capabilities and limitations of each model. This monograph represents the valuable information compiled by this task committee.

PDF Catalog

PDF Pages	PDF Title
6	Foreword
8	Contents
16	Glossary A B C
17	D E F
18	G H I L M
19	N O P R S
20	T U V
22	Chapter 1 Important Findings
26	Chapter 2 Organization and Background 2.1 Committee Organization
27	2.2 Uncertainties in Applying Models
29	2.3 Organization of This Monograph
32	Chapter 3 Ground Water Modeling Survey 3.1 Available Survey Data 3.2 Approach and Procedures 3.2.1 ASCE Survey
33	3.2.2 EPA Survey
34	3.2.3 Geraghty and Miller Survey
35	3.2.4 Brookhaven National Laboratory Survey 3.3 Widely Used Models 3.3.1 ASCE Survey
36	3.3.2 EPA Survey
38	3.3.3 Geraghty and Miller Survey 3.3.4 Brookhaven National Laboratory Survey 3.4 Frequency of Usage
40	3.5 Training and Education
41	3.6 Technical Support 3.7 Other Problems Noted in the Surveys
43	3.8 Selection of Models for Further Evaluation
44	Chapter 4 Classification Criteria 4.1 Three Groups of Classification Criteria
45	4.2 Classification Criteria Based on Usage or Purpose
48	4.3 Classification Based on Function or Process Modeling
52	4.4 Classification Based on Simulation of Aquifer Characteristics and Solution Techniques 4.4.1 Characteristics of the Porous Media, Ground Water, and Contaminants
57	4.4.2 Assumptions of Dimensionality
58	4.4.3 Solution Techniques
60	Chapter 5 Classification of Ground Water Models 5.1 Introduction
61	5.2 Procedure
71	5.3 Results
74	Chapter 6 Model Parameters 6.1 Guidance on Parameter Selection
75	6.2 The Questionnaire and the Response
80	6.3 Parameter Specification 6.3.1 Hydrogeologic Properties
89	6.3.2 Hydraulic Properties
91	6.3.3 Mass Transport Parameters
97	6.3.4 Dimensionality and Solution Techniques
101	6.4 Specification of Boundary Conditions
103	6.4.1 Mathematical Boundaries
105	6.4.2 Hydrogeologic Boundaries for Flow Models
109	6.4.3 Boundary Conditions for Transport Models
110	6.5 Model Setup and Calibration
111	6.5.1 Formulation of Conceptual Model
112	6.5.2 Relative Significance of Parameters
113	6.5.3 Limitations and Quality of Input Parameters
116	6.5.4 Calibrated Data and Sensitivity Analysis
122	Chapter 7 Model Evaluation 7.1 Introduction
123	7.1.1 Description of Questionnaires 7.1.2 Response to Questionnaires
124	7.2 Model Applicability
127	7.2.1 Flow Models 7.2.2 Transport Models
130	7.3 Model Usability
131	7.3.1 Key Model Assumptions, Strengths and Limitations Identified by Model Developers
140	7.3.2 Key Model Strengths and Limitations Identified by Model Users
148	7.3.3 QA/QC Procedures Used for Model Runs 7.3.4 Ways in Which Models Are Used Incorrectly
153	7.3.5 Citations Describing Sensitivity of Model Parameters 7.4 Model Accessories 7.4.1 Pre- and Post-Processors
155	7.4.2 User Comments on User Manuals, Hardware Requirements, and Error Messages
159	7.5 Model Support 7.5.1 Vendor Support 7.5.2 Support Through Short Courses/Workshops
161	7.6 Model Success
162	7.6.1 User Evaluation of Degree of Success with Model 7.6.2 Comparison of Model Results and Field Values
166	References
174	Appendices A: ASCE Ground Water Modeling Questionnaire
176	B: EPA/OSWER Questionnaire
180	C: Geragthy and Miller Ground Water Modeling Survey Form
182	D: Brookhaven National Laboratory Questionnaire
184	E: Survey Form for Model Developers
188	F: Survey Form for Model Users
192	G: Citations Describing Model Theory
196	H: Citations Providing Examples of Code Validation
200	I: Citations Describing Sensitivity of Model Parameters
204	J: Citations Describing Model Solutions for Various Case Studies
208	Index A B C
209	D E
210	F G
211	H I L M
212	N O P
213	Q R
214	S T
215	U V W