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August 2017
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City of Morgan Hill
Sewer System Master Plan
As part of the preparation of this Sewer System Master Plan, Hydmet Consulting prepared reports
for the design storm used in evaluating the existing and future sewer system for Max Day Wet
Weather flows.
1.7 UNIT CONVERSIONS AND ABBREVIATIONS
Engineering units were used in reporting flow rates and volumes pertaining to the design and
operation of various components of the sanitary sewer system. In some cases, different sets of
units were used to describe the same parameter where it was necessary to report values in
smaller or larger quantities. Values reported in one set of units can be converted to another set of
units by applying a multiplication factor. A list of multiplication factors for units used in this report
are shown on
Table 1.1
.
Various abbreviations and acronyms were also used in this report to represent relevant sewer
system terminologies and engineering units. A list of abbreviations and acronyms is included in
Table 1.2
.
1.8 GEOGRAPHIC INFORMATION SYSTEMS
This master planning effort made extensive use of Geographic Information Systems (GIS)
technology, for efficiently completing the following tasks:
x
Develop the physical characteristics of the hydraulic model (gravity mains, force mains,
and lift stations).
x
Allocate existing wastewater loads, as calculated using the developed wastewater unit
factors.
x
Calculate and allocating future wastewater loads, based on the future developments land
use.
x
Extract ground elevations along the gravity and force mains from available contour maps.
x
Generate maps and exhibits used in this master plan.