\documentclass[10pt,letterpaper, final]{report} % \documentclass{} required in all files

\usepackage{../preamble/myWEPS} % This is now our single preamble file inclusion (it assumes a “.sty” file extension)

\begin{document}
The STIR Energy Report screen (\cref{fig:WEPS_STIR_Energy_Report})
contains general run information
as well as a summary of the STIR energy and SCI (Soil Conditioning Index) information for the WEPS run.
The STIR Energy Report displays the three sections
(SCI Summary, Rotation STIR Energy and Crop Interval STIR Energy).

\begin{figure}[H]
\centering
	\includegraphics[scale=0.7]{images/Reports/STIR_energy_report.jpg}
\caption{WEPS STIR Energy Report displaying the “SCI Summary” and “Rotation STIR 
Energy” sections.}
\label{fig:WEPS_STIR_Energy_Report}
\end{figure}

This \textbf{SCI Summary} section consists of the SCI (Soil Conditioning Index) value,
the Energy Calculator (fuel/ac for English units and fuel/ha for SI units),
average annual STIR value, wind and water erosion values
(t/ac for English units and kg/m$^2$ for SI units) and the SCI subfactors: 
OM, FO and ER.
The SCI is an index developed by NRCS to reflect trends in soil organic matter,
which are assumed to be an indicator of soil quality trends.
A negative value generally implies that the soil organic matter
is decreasing and thus soil quality would be degrading over time.
A positive value implies that soil organic matter is increasing
and thus soil quality is generally improving over time.
A value of zero or near zero implies that soil organic matter is not changing over time
and thus the soil quality is sustainable.
The values presented in this summary are:

\begin{itemize}[label={}]

\item{\textbf{Soil Condition Index} - Index developed and used by NRCS to reflect the relative quality
of a soil due to the management/crop rotation practices being applied.}

\item{\textbf{Energy Calculator} - Average annual energy per acre expended for operations
specified in the management/crop rotation.}

\item{\textbf{Average Annual STIR} – STIR stands for Soil Tillage Intensity Rating
and is computed for the entire management/crop rotation sequence from the listed operations.}

\item{\textbf{Wind Erosion Soil Loss} - An input required for SCI calculation.
Obtained from the WEPS simulation run.}

\item{\textbf{Water Erosion Loss} - An input required for SCI calculation.
User is expected to specify the value on the main WEPS screen prior to the WEPS simulation being executed.}

\end{itemize}

\textbf{SCI Subfactors}
{\leftskip=0.5cm\relax
\textbf{SCI Subfactors} presented in this sub-report are:
\par}

\begin{itemize}[label={}]
\item{\textbf{OM} - It is the organic material or biomass subfactor.
This component is an indicator of organic matter preservation
and accounts for the effect of biomass returned to the soil,
including material from plant or animal sources, and material
either imported to the site or grown and retained on the site.
It uses the initial soil surface/layer prooperties as provided at the beginning of a WEPS simulation.}
\item{\textbf{FO} - It is the field operations subfactor.
This component accounts for the effect of field operations that stimulate organic matter breakdown.
Tillage, planting, fertilizer application, spraying, harvesting,
and other operations which crush and shatter plant residues and aerate or compact the soil.
These effects increase the rate of residue decomposition
and affect the placement of organic material in the soil profile.}
\item{\textbf{ER} - It is the erosion subfactor.
This component accounts for the effect of removal
and sorting of surface soil organic matter
by sheet, rill, or wind erosion processes
as predicted by water and wind erosion models.
It does not account for the effects of concentrated flow 
erosion, such as ephemeral or classic gullies.}
\end{itemize}

The Rotation STIR Energy section (\cref{fig:WEPS_STIR_Energy_Report})
summarizes the effect of the management/crop rotation operations
on the health of the soil and the energy required to perform them.
It consists of the individual operation names, date of use, \textbf{STIR} values
along with their \textbf{Fuel} type,
estimated \textbf{Energy use} (Btu/ac for English units and kJ/ha for SI units)
and \textbf{Costs} (\$/ac for English units and \$/ha for SI units).
The total STIR energy value (But/ac if English units are used and kJ/ha if SI units are specified)
and Cost (\$/ac for English units and \$/ha if SI units are specified)
are also tallied and reported at the bottom of this section.

The \textbf{Crop Interval STIR Energy} section (\cref{fig:WEPS_STIR_Energy_Report_Crop_Interval_STIR})
summarizes the effect of the management/crop rotation operations used
over the specified crop interval dates (from termination of the last crop
to the harvest or termination of this crop) values
for \textbf{STIR, Energy} and \textbf{Cost} are displayed.

\begin{figure}[H]
\centering
	\includegraphics[scale=0.8]{images/Reports/Run_summary_crop_interval_STIR_energy.jpg}
\caption{WEPS STIR Energy Report (Crop Interval STIR Energy section).}
\label{fig:WEPS_STIR_Energy_Report_Crop_Interval_STIR}
\end{figure}

\end{document}