Our Services At Clark Civil Engineering we Provide Decades of Experience to Help You With Any Type of of Project You May Have. We Provide the Following Services Across Marin County and the Entire Bay Area. Civil Engineering We provide experience to avoid complications with your project design.. Land Surveying We use the latest Technology, to map out your project from urban city or rugged wilderness. Consulting We can help provide you with advise and solutions for questions. Septic System Design We can help ensure your waste water system is functioning efficiently.