Kathleen Litchfield




Kathleen Litchfield, Principal of Petro Design/Build Group and Stormwater Professionals, is one of the Washington area's leading landscape and stormwater experts, with over 40 years in the industry.  Her insightful advice on landscape design, construction, storm water and drainage solutions and practice has been published and quoted in numerous regional and national magazines. Her company has been chosen to design and implement numerous successful BMP projects both commercially and residentially.

As a Watershed Steward and a seasoned design/build contractor, Kathleen is acutely aware of sustainable landscape design and practices and the need for the reduction of storm water run-off. She has developed and taught accredited college courses in Horticulture and Landscape Construction and continues to teach college level Landscape Design, Construction and Storm Water Management Courses. She has lectured for numerous Garden Clubs, the National Association of Remodeler’s Industry, Landscape Contractors Association, the Smithsonian Education Series, and George Washington University Landscape design program among others. She developed and continues to teach the CEU course ‘Landscape Design, Construction and Cost’ to members of the American Association of Interior Designers ASID, Washington and Maryland Chapters and is listed as a national speaker for organization.

Her other experience and accomplishments include:

  • Certified NFWF (National Fish and Wildlife) provider

  • Member of the Chesapeake Conservation Landscape Council (CCLC)

  • Advisor  and team member consultant for Chesapeake Bay Landscape Professional Program

  • Master Watershed Steward of the Chesapeake Bay

  • Board Member Watershed Stewards Academy

  • Certified Mold Remediator and Inspector

  • Lead Certified

  • Past chair, Prince George's County Foundation for Applied Construction Technology for Students (F.A.C.T.S.). Foundation provides students with hands-on experience in all aspects of construction including interior and exterior design.  Students construct a home every year and design and install sustainable landscaping. Active participant for over 35 years.

  • Teaches students in the Prince George’s County high schools, involved in the F.A.C.T.S. program, Landscape Design to prepare the student-built houses for sale. She has taught in the program since 1982.

  • Board Member of the Prince George’s County Public School Superintendent’s Business Advisory.

  • Board Member – Elizabeth Seton High School in Bladensburg where she serves on the STEM and LEAD committees.

  • Advisor and volunteer leader and instructor for Elizabeth Seton’s sustainable landscape initiative team.  Under Kathleen’s leadership; students are assessing, designing and implementing 4 stormwater and sustainable landscape projects on the Seton campus during the spring 2016 season.

  • Selected (1 of 12 people nation-wide) to participate in a 1 week  intensive outdoor study on climate change at the Smithsonian Institute where she work with a team of research professionals and scientist to study and assess man’s impact on the environment as it relates to eastern forest and Maryland’s Chesapeake Bay. Practices and principles incorporated into company’s design/build projects and articles.

  • Founder of the Cedarhurst Buffer-Management Committee and chair for over 25 years heading storm water mitigation and buffer management projects and general grounds monitoring and care. Grant recipient Oct. 2011 for wetland mitigation and plantings within the common areas.

  • Past chair of the Education and Programs Committee of the Landscape Contractors Association.

  • Member:  ASID, IFDA, MHS, AHS, PGHS, Historic Trust, Metronet, Chesapeake Conservation Landscape Council CCLC, NFWF (Certified Provider),


Stormwater Professionals is the ONLY full-service company for your entire site - interior and exterior, providing drainage solutions using sustainable practices.

We keep water out of your house, away from your foundation and direct it back into your watershed, resulting in pollution source reduction.  Our experts have been providing positive results for over 40+ years.  We understand the natural flow of water and the damage it can have on your site and home.


We work closely with our clients to identify the problem and establish the most efficient and cost effective method for remediation.  Our experienced and certified experts have the knowledge and access to the most current products and procedures available for your site's particular requirements.

Areas of expertise include :

  • Residential Storm Water Management

  • Gutters and Downspouts

  • Drainage Piping

  • Catch Basin / Trench Drains

  • French Drainage Systems

  • Dry Steams

  • Underground Dispersion Systems

  • Erosion Control

  • Pervious Paving

  • Experts in Rain Garden Design and Installation

  • Bio Retention Planters

  • Rain Barrels - Supply and Installation

  • Roofing and Chimney Repairs

  • Root Invasion Amendments

  • Foundation Repairs and Waterproofing

  • Structural Amendments

  • Certified in Mold Inspector and Remediator

  • Master Watershed Steward Specializing in all Methods of Pollution Source Reduction