Tag: local limits


Local Limits: Collection System Concerns

In a series of blog entries on Local Limits, this month’s blog entry focuses on Collection System concerns that must be taken in to account while developing or evaluating local limits. To meet requirements of 40 CFR 403.5 (b) and to address about the collection systems, including the health and safety of workers at treatment […]


Detailed Re-evaluation of Local Limits

This month’s blog is a continuation of my previous blog on detailed re-evaluation of local limits. Re-evaluation of local limits must be carried out periodically to ensure protective limits and operation and POTWs may wish to review local limits when preparing their annual Pretreatment Program Reports. However, a detailed re-evaluation is necessary when there is […]


Local Limits: Review and Detailed Re-Evaluation

Reviews and re-evaluations are necessary for local limits calculations.  The regulatory requirement comes from 40 CFR 122.44(j)(2)(ii), which states that POTWs must provide a written technical evaluation of the need to revise local limits under 40 CFR 403.5 (c)(1), following permit issuance or re-issuance. EPA suggests performing periodic evaluation of local limits be tied to the […]


A Common Sense Assessment and Local Limits Adoption Process

This segment of the blog talks about a Common Sense Assessment in determining whether the developed local limits are achievable are not and gives a brief idea regarding public participation, approval and adoption process involved. After developing local limits, POTW should ask to determine if its limits pass the common sense test: Are the limits technologically […]


Local Limits Allocation Methods and Duration

As I mentioned in my previous blog, POTWs should choose an allocation method that best fits their situation, prevents pass through or interference, and complies with the federal and state regulations. It can choose one approach for some pollutants and another approach for other pollutants, depending on the loading available and the number of industrial […]