Pioneer Valley Web Design on "Removing White Space in Footer of Twenty Twelve"

Use this CSS at bottom of Child Theme stylesheet:

.site-content article {
	border-bottom: 0;
	margin-bottom: 0;
	padding-bottom: 0;
}

footer[role="contentinfo"] {
	border-top: 0;
	line-height: 1;
	margin-top: 0;
	padding: 0 0 10px 0;
}

hr {
	display:none;
}