| element | MaterialRelease/pool |
<xs:sequence>
<xs:element name="type" type="SpillType"/>
<!-- solid, liquid, gas -->
<xs:element name="size">
<xs:complexType>
<xs:choice>
<xs:element name="lrms" type="lrms:LocationReference"/>
<xs:element name="raw">
<xs:complexType>
<xs:sequence>
<xs:element name="length">
<xs:simpleType>
<xs:restriction base="xs:unsignedShort">
<xs:maxInclusive value="10000"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
<!-- the length (in units) along one side of the pool or the diameter
if the pool is circular or if the estimate is only of a single
unit (such as acres) -->
<xs:element name="width" minOccurs="0">
<xs:simpleType>
<xs:restriction base="xs:unsignedShort">
<xs:maxInclusive value="10000"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
<!-- the width (in units) along the other side of the pool, or ZERO to
indicate that the length field has a diameter -->
<xs:element name="sqUnits" minOccurs="0">
<xs:simpleType>
<xs:restriction base="xs:unsignedInt">
<xs:maxInclusive value="100000000"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
<!-- the two values above combined to form a total estimate -->
<xs:element name="units" type="itis:Units"/>
<!-- select from the suitable Units code in ITIS
which contains things like feet, acres, gallons, etc.
when the unit is distance the then sqUnits is that unit squared
when a only the length entry is used to convey size (such as an
estimate of gallons, then the units stand -->
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:choice>
</xs:complexType>
</xs:element>
<xs:element name="text" type="FreeText" minOccurs="0"/>
<!-- any free text required if units can not be selected -->
</xs:sequence>
</xs:complexType>
