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Explore all PDH CEU CPC CPD and Webinars for Engineers

 

This course accepted in:

 

• Alabama (P.E.)

• Alaska (P.E.)

• Arkansas (P.E.)

• Florida (P.E.) (AOP)

• Georgia (P.E.)

• Idaho (P.E.)

• Illinois (P.E.)

• Iowa (P.E.)

• Kansas (P.E.)

• Kentucky (P.E.)

• Louisiana (P.E.)

• Maine (P.E.)

• Maryland (P.E. Category A)

• Minnesota (P.E.)

• Mississippi (P.E.)

• Missouri (P.E.)

• Montana (P.E.)

• Nebraska (P.E.)

• Nevada (P.E.)

• New Hampshire (P.E.)

• New Jersey (P.E.)

• New Mexico (P.E.)

• New York (P.E.)

• North Carolina (P.E.)

• North Dakota (P.E.)

• Ohio (P.E.)

• Oklahoma (P.E.)

• Oregon (P.E.)

• Pennsylvania (P.E.)

• South Carolina (P.E.)

• South Dakota (P.E.)

• Tennessee (P.E.)

• Texas (P.E.)

• Utah (P.E.)

• Virginia (P.E.)

• West Virginia (P.E.)

• Wyoming (P.E.)

 

 

 

Abbreviations:

AOP-Areas of Practice

LAR-Laws & Rules

P.E.-Professional Engineers

 

Explore all PDH CEU CPC CPD and Webinars for Engineers

Monitored Natural Attenuation (MNA)

Course No. EN-4004

Credit: 4 PDH

Course Fee: $115.80 Purchase course

Subject Matter Expert: Mark R. Knarr, P.E.

 

Overview

EPA confirmed nearly 3,000 new releases from underground storage tanks (USTs) during fiscal year 2010, bringing the cumulative total to 491,572 releases since 1984. Although progress has been made in cleaning these sites, over 96,000 of them still require remedial action. (Source: Semiannual Report of UST Performance Measures, Mid Fiscal Year 2010, 3/31/2010.). These UST leaks pose a grave threat to human health and the environment by contaminating groundwater and soil.

Depending on the presence of free product and stability of the contaminant plume, MNA can serve as a follow-up or standalone method for soil and groundwater remediation.

MNA is considered passive because, aside from placement of monitoring wells, there is negligible disturbance of the subsurface. MNA does not use pumped wells for injection or extraction of air or water, as do bioventing or soil vapor extraction. Instead, MNA relies on physical and chemical activity in the natural subsurface to attenuate contaminants. Due to longer remediation time frames, contaminant migration, and other uncertainties, performance monitoring is much more critical for MNA than other strategies. MNA seems attractive as a “do-nothing” approach; however, in order to use MNA exclusively, you must be certain that 1) the contaminant source is eliminated and 2) the plume is contracting. Otherwise, a more active strategy is necessary.

This course is intended for environmental engineers who wish to expand their knowledge of alternative methods of site remediation. The course material is extracted from Chapter 9 (May 2004), of EPA publication 510-R-04-002, How to Evaluate Alternative Cleanup Technologies for Underground Storage Tank Sites: A Guide for Corrective Action Plan Reviewers. Updated May 2004.

The reader must pass a multiple-choice quiz consisting of twenty (20) questions to earn PDH credit.

 

Specific Knowledge or Skill Obtained

This course teaches the following specific knowledge and skills:

  • Initial and detailed evaluation to determine viability of MNA for soil and groundwater cleanup
  • Physical and biological processes that affect MNA performance
  • Hydro-geologic and contaminant properties that affect MNA performance
  • Long-term performance monitoring for soil and groundwater

 

Course

Click on the following link to the PDF document to review the course material before taking the quiz for credit.

Monitored Natural Attenuation

 

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To receive PDH credit for this course, you must pass a multiple-choice quiz. Click the button below to Purchase Course and Take Quiz. To take the quiz, your computer must be set to accept cookies. See how to check your cookie settings.

 

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