The Massachusetts Department of Environmental Protection (MassDEP) fined Hewlett-Packard $11,833 for violating Air Pollution Control, Hazardous Waste and Industrial Wastewater regulations at its secure data storage and back-up center in Littleton, Massachusetts. MassDEP found that Hewlett-Packard failed to comply with air quality plan approvals with regard to keeping specific records and following specified monitoring schedules and requirements, and operated its emergency engines during non-emergency situations. The company also exceeded time limits for storage of waste oil, failed to comply with other waste oil requirements, and discharged industrial wastewater into the environment without a proper discharge permit.