Appendix C: Test Procedures for Surface Runoff Discharges

Appendix C

Test Procedures for Surface

Runoff Discharges

C.1 Introduction

This appendix provides detailed, step-by-step procedures for conducting tests

for evaluation of confined disposal facility (CDF) runoff. The background,

rationale, and tiered framework for application of these procedures are discussed in

Chapter 5 of the main text of the Upland Testing Manual (UTM). Four test

procedures are included in this appendix:

a. Simplified laboratory runoff procedure (SLRP) for water quality

evaluations.

b. Rainfall simulator/lysimeter system (RSLS) test for water quality

evaluations.

c. Water column toxicity tests using the SLRP elutriate.

d. Water column toxicity tests using the RSLS elutriate.

C.2 Simplified Laboratory Runoff Procedure for

Runoff Quality Evaluation

The SLRP was designed to simulate the water quality of precipitation runoff

from dredged material. The procedure evaluates the surface water generated on

the CDF as a result of two cases: 1) Precipitation under wet, anaerobic

conditions where consolidation is at a minimum as interstitial water is removed.

At this stage, suspended solids in precipitation generated surface water within

the CDF are possible within the range of 500 to 50,000 mg l-1; 2) The opposite

Appendix C Test Procedures for Surface Runoff Discharges