<?xml version="1.0" encoding="UTF-8"?>
<!-- edited with XMLSpy v2007 (http://www.altova.com) by Sharon Hooper Walker (INDUS Corporation) -->
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:att="http://www.exchangenetwork.net/schema/OWIR/ATT/1" targetNamespace="http://www.exchangenetwork.net/schema/OWIR/ATT/1" elementFormDefault="qualified" attributeFormDefault="unqualified" version="1.0">
    <xsd:annotation>
        <xsd:documentation>Schema Name: index.xsd</xsd:documentation>
        <xsd:documentation>Description: Default Index Schema for ATT (Water Assessment Data)</xsd:documentation>
        <xsd:documentation>Application: Integrated Reports (IR) for 305(b) and 303(d) systems</xsd:documentation>
        <xsd:documentation>Developed by: Environmental Protection Agency, INDUS Corporation</xsd:documentation>
        <xsd:documentation>Point of Contact: Scott Kocher</xsd:documentation>
    </xsd:annotation>
    <xsd:include schemaLocation="2/ATT_v1.2.xsd"/>
</xsd:schema>