Date (single) and meta (multiple) query

// WP_Query arguments
$args = array(
	'post_type'              => array( 'data-modification' ),
	'date_query'             => array(
		array(
			'year'          => 2016,
			'month'         => 5,
		),
	),
	'meta_query'             => array(
		'relation' => 'AND',
		array(
			'key'     => '_data_modification_type',
			'value'   => 'value',
			'compare' => '=',
		),
		array(
			'key'     => '_data_modification_status',
			'value'   => 'value',
			'compare' => '=',
		),
	),
);

// The Query
$query = new WP_Query( $args );