C.2.1 Materials and apparatus

worst-case scenario is that of complete dryness with no vegetative cover.

Suspended solids in this stage may range from 50 to 5,000 mg l-1.1

The SLRP was developed to provide a faster, less expensive initial

evaluation of surface runoff quality from dredged material placed in an upland

environment (Skogerboe 1995; Price, Skogerboe, and Lee, 1998; and Price and

Skogerboe 1999). The test determines runoff quality from wet, anoxic and dry,

oxidized conditions. The core of the SLRP procedure is the use of hydrogen

peroxide to rapidly oxidize air-dried sediment to simulate the long-term effects

of chemical and microbial oxidation on the solubility of specific metals.

C.2.1 Materials and apparatus

The following equipment and materials are required to conduct the SLRP.

Apparatus.

a. 4-L glass bottles with teflon tops.

b. Assorted graduated cylinders up to 1 L.

c. Horizontal mechanical shaker.

d. Millipore microanalysis vacuum filter apparatus.

e. 0.45-um membrane filters.

f. 0.7-um glass fiber filters without binders.

g. 2.7-um glass fiber filters without binders.

Prior to use, all glassware should be thoroughly cleaned. Wash all glassware

with detergent, rinse five times with tap water, place in a clean bath for a minimum

of 4 hr, rinse five times with tap water, and then rinse five times with distilled or

deionized water.

Reagents.

a. 30 percent hydrogen peroxide.

b. Concentrated nitric acid.

c. Other preservation reagents as required.

It is important to note that use of these total suspended solids (TSS) values in the runoff

test are intended to "bracket" the results for evaluation of dissolved contaminants of

concern (COC) in runoff. Actual TSS concentration in runoff for a properly managed

CDF would be lower.

Appendix C Test Procedures for Surface Runoff Discharges