Lower Raritan Middlesex County 208 water quality management planning program; Addendum to: task 5 final draft report low flow modeling: Upper Millstone River, Lower Millstone River, Raritan River

The Task 5 modeling report contained a description of the application of a model previously developed by Lawler, Matusky and Skelly Engineers (LMS) and subsequently modified, to the Upper and Lower Millstone Rivers. The report documented the physical characteristics of these rivers, the conversion of these characteristics to a basic model, the evaluation of model parameters based on low flow sampling of the two rivers, and the calibration and verification of the models with observed dissolved oxygen (DO) profiles. This addendum report discusses: Section II - Model Program Change - the omission in the model and its revision. Section III - Upper Millstone River: a recalculation of kr , kn' and k2, final verification results, and comparison of these results to those in the Task 5 report. Section III -·Lower Millstone River - reevaluation of parameters, final verification results, and comparison of these results to those in the Task 5 report. Section IV - Waste Load Allocation - a documentation of the effect that the corrections to the model have on the DO profiles reported in the allocation procedure report.208 Water Quality Management Planning Program.This document was produced under Section 208 of U.S. PL 92-500, the Clean Water Act