Our Services

  • Arrowroot Engineering provides design services for subdivision permitting and design including the following:

    1) Certificate of Subdivision Approval (COSA) Preparation & Rewrites

    2) Local county onsite wastewater permits

    3) DEQ-8 Circular stormwater design

  • Arrowroot Engineering provides full service drainfield design for your residential home or commercial business. Ashley is a registered Gallatin County Site Evaluator and can complete the required soil characterizations for your proposed system.

  • Ashley is a certified SWPPP preparer in the state of Montana and can help prepare SWPPPs for construction sites with greater than 1 acre of disturbance.

  • Arrowroot Engineering can provide SWPPP inspection services and SWPPP administration for active construction sites.

    Does your site require a MT Department of Enviromental Quality (DEQ) construction dewatering permit? Arrowroot Engineering can provide turbidity inspections for your site during active construction dewatering.

  • Considering developing your vacant property into an RV Park or VRBO development? Arrowroot Engineering can guide you through the permitting and design process.

Ashley Flammond, PE

Ashley is a registered professional engineer in the State of Montana and the owner of Arrowroot Engineering, PLLC. She has more than 16 years of experience working for a variety of public and private clients. Her work experience includes the design of commercial/residential subdivisions, sanitary/stormwater infrastructure, public water supplies, and onsite wastewater systems.

Contact Us

Interesting in one of our services? Reach out using this form and we will be happy to answer any questions you have or provide a cost estimate.