[Code of Federal Regulations]

[Title 40, Volume 24]

[Revised as of July 1, 2006]

From the U.S. Government Printing Office via GPO Access

[CITE: 40CFR230.73]



[Page 275]

 

                   TITLE 40--PROTECTION OF ENVIRONMENT

 

         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)

 

PART 230_SECTION 404(b)(1) GUIDELINES FOR SPECIFICATION OF DISPOSAL SITES 

FOR DREDGED OR FILL MATERIAL--Table of Contents

 

              Subpart H_Actions To Minimize Adverse Effects

 

Sec.  230.73  Actions affecting the method of dispersion.



    The effects of a discharge can be minimized by the manner in which 

it is dispersed, such as:

    (a) Where environmentally desirable, distributing the dredged 

material widely in a thin layer at the disposal site to maintain natural 

substrate contours and elevation;

    (b) Orienting a dredged or fill material mound to minimize 

undesirable obstruction to the water current or circulation pattern, and 

utilizing natural bottom contours to minimize the size of the mound;

    (c) Using silt screens or other appropriate methods to confine 

suspended particulate/turbidity to a small area where settling or 

removal can occur;

    (d) Making use of currents and circulation patterns to mix, disperse 

and dilute the discharge;

    (e) Minimizing water column turbidity by using a submerged diffuser 

system. A similar effect can be accomplished by submerging pipeline 

discharges or otherwise releasing materials near the bottom;

    (f) Selecting sites or managing discharges to confine and minimize 

the release of suspended particulates to give decreased turbidity levels 

and to maintain light penetration for organisms;

    (g) Setting limitations on the amount of material to be discharged 

per unit of time or volume of receiving water.