PROJ01756

• Contract/PO #: FS0042X
• Contractor Name: Elizabeth, Town of
• Contract Type: Miscellaneous
• Water District: 0
• Loan Projects - Doc Type: Feasibility Study

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1994 Master Plan Update
Town of Elizabeth

TABLE 8
WWTF CAPACITY LIMITS

% OF
HYDRAULIC LOADING PERMITTED
LIMIT (FLOW - MGD) NO. OF SFEs CAPACITY
CUTTent flow .098 (est.) 484 61 %
CUTTent capacity (2 active .125 620 78%
lagoons) *
Initiate expansion .128 635 80%
evaluation
Flow at end of study .136 675 85%
period
Initiate expansion .152 754 95%
construction
Maximum capacity .160 794 100%

* Note: Activate Lagoon No.3 and upgrade the Lift Station pumps when the
CUTTent WWTF capacity (0.125 MGD, 620 SFE) is approached.

Based on the projected growth of the Town and the accompanying flow, the
WWTF has the capacity to treat the expected flows throughout the study
period. It should be noted that the WWTF capacity is also based on the organic
loading (Biological Oxygen Demand - BOD). Typically, the BOD concentration in
the wastewater remains constant. Thus, the total BOD load increases
proportionally as the flow increases over time. Calculations prepared in the
1990 WWTF Capacity Study determined that the WWTF is capable of removing
the additional BOD that is expected with the increased flows up to (and beyond)
the hydraulic capacity of the facility. Therefore, this parameter was not
evaluated in this study.

Wastewater Treatment Facility Recommendations

The BOD loading, as well as the hydraulic loading and other organic loading
parameters, must be monitored continuously to determine if they are within the
treatment requiTements established by the facility permit. If the sampling and
testing data shows that the limits for these parameters are consistently
approached or exceeded, an evaluation of the facility should be conducted. The
information shown here is only an estimate based on the available information.

Meurer & Associates
October 5, 1994
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