[Code of Federal Regulations]
[Title 40, Volume 21]
[Revised as of July 1, 2002]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR258.56]

[Page 412]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
                   CHAPTER I--ENVIRONMENTAL PROTECTION
                           AGENCY (CONTINUED)
 
PART 258--CRITERIA FOR MUNICIPAL SOLID WASTE LANDFILLS--Table of Contents
 
        Subpart E--Ground-Water Monitoring and Corrective Action
 
Sec. 258.56  Assessment of corrective measures.

    (a) Within 90 days of finding that any of the constituents listed in 
appendix II to this part have been detected at a statistically 
significant level exceeding the ground-water protection standards 
defined under Sec. 258.55 (h) or (i) of this part, the owner or operator 
must initiate an assessment of corrective measures. Such an assessment 
must be completed within a reasonable period of time.
    (b) The owner or operator must continue to monitor in accordance 
with the assessment monitoring program as specified in Sec. 258.55.
    (c) The assessment shall include an analysis of the effectiveness of 
potential corrective measures in meeting all of the requirements and 
objectives of the remedy as described under Sec. 258.57, addressing at 
least the following:
    (1) The performance, reliability, ease of implementation, and 
potential impacts of appropriate potential remedies, including safety 
impacts, cross-media impacts, and control of exposure to any residual 
contamination;
    (2) The time required to begin and complete the remedy;
    (3) The costs of remedy implementation; and
    (4) The institutional requirements such as State or local permit 
requirements or other environmental or public health requirements that 
may substantially affect implementation of the remedy(s).
    (d) The owner or operator must discuss the results of the corrective 
measures assessment, prior to the selection of remedy, in a public 
meeting with interested and affected parties.