Percolation Testers and Sewage Disposal Designers

Sewage disposal system designs will be accepted for review only from Registered Civil Engineers, Registered Geologists, Certified Professional Soil Scientists, or Registered Environmental Health Specialists who are knowledgeable and experienced in the field of sewage disposal system design and installation. Current license and registration have been verified for the professionals listed below.

Registered Geologists	Registered Civil Engineers	Registered Env. Health Specialists
AGB Geologic Consulting PO Box 1662 Diamond Springs, CA 95619 (916) 509-0532 AGBGeologic@gmail.com	Bailey & Kantz PO Box 515 Coloma, CA 95613 (530) 622-7725 / 333-1444 dckantz@gmail.com	Aqua Terra Environmental Consultants David Honeycutt 213 Sawyer Street Auburn, CA 95603 (530) 885-0573

David Annis, P.G. Placerville, CA 95667 (559) 760-7108 dcasepticdesign@gmail.com	Cal State Engineering Jeff Morlan 504 Broadway Jackson, CA 95642 (209) 223-1441	Chalpin Environmental Services Susan Chalpin PO Box 2223 Nevada City, CA 95959 (530) 273-2111 Fax: (530) 346-9559 sgchalpin@saber.net

Earth-Strata Geotechnical Services, Inc. Aaron Wood 42184 Remington Ave. Temecula, CA 92590 (951) 216-1130 awood@earth-strata.com	NexGen Engineering & Consulting LLC Ian Cole, P.E.A 1043 Nichols Ct., Suite 200 Rocklin, CA 95765 (866) 269-0999 ian@nexgeneng.com	Lindbloom Septic Design David Lindbloom Marc Lindbloom 122 East Street Auburn, CA 95603 (530) 888-7464

Norton Geology 2641 Randolph Canyon Rd. Pollock Pine, CA 95726 (530) 651-4685 nortongeology@gmail.com	Youngdahl Consulting Group, Inc. 1234 Glenhaven Ct. El Dorado Hills, CA 95762 (916) 933-0633 Fax: (916) 933-6482 www.youngdahl.net	Ron Duncan Septic System Specialist 4400 Duncan Hill Road Rescue, CA 95672 (916) 712-8015 perctest@yahoo.com www.ronduncanandson.com

Wheeldon Geology Bill Mitchell 420 Placerville Drive Placerville, CA 95667 (530) 621-4482 Fax: (530) 621-4481	Petite & Associates D .Larry Petite 3449 No. Shingle Rd. Shingle Springs, CA 95682 (530) 677-6682 Fax: (530) 677-4672

Sonde Geological Service Clyde Hebbron 3369 Kimberly Road Shingle Springs, CA 95682 (530) 677-3055	Rancho Engineering Jarad Holliday, PE (530) 877-3700 ranchoengineering@hotmail.com

	C.W.E. 2260 Douglas Blvd. Suite 160 Roseville, CA 95661 (919) 772-7800 info@cwecorp.com www.Cwecorp.com

	Acorn Onsite, Inc. Tim Johnston, P.E. (925) 447-5200 tim@AcornOnsite.com www.AcornOnsite.com

**This does not signify a recommendation or endorsement of any individual by this Department. Additional designers can be found in the local directory.