_web HKS - Gravel Pit-12_web HKS - Gravel Pit-3_web HKS - Gravel Pit-2Albert Frei Recycled Materials Category: Commercial, Retail, Mixed-useHKS ServicesCivil EngineeringLand SurveyingWater Resource Engineering Developer Albert Frei & SonsProject Location Henderson, COProject Information 53.2 Acres Gravel pit operation