For monolingual Common Crawl data and code to process it please refer to these resources:

• University of Edinburgh N-gram site
• Code to process corpora: https://github.com/kpu/preprocess
• Code to produce raw monolingual files from CommonCrawl: https://github.com/treigerm/CommonCrawlProcessing
• Alternative monolingual data extraction under development in ParaCrawl project: https://github.com/paracrawl/extractor