AM/PAC and Associates, Inc.

Geotechnical, Environmental and Foundation Engineering, Design and Construction

                                         Information on Services We Provide

Percolation Testing or sometimes referred to as a Perc Test, Perk test, Percolation Investigation, Feasibility Test, Septic System Test, etc. is performed to determine the feasibility of using an on site, sub-surface sewage disposal system on the lot or parcel in question. They are generally performed for either a Leach Line or Seepage Pit application but are also performed for Advanced Treament Unit approval and Mound Systems. Percolation tests are required and performed for several reasons such as:
  • Purchase or sale of vacant land
  • Preparation of building permits
  • Additions to existing homes
  • Second unit permits
  • Commercial and Residential Construction
  • Repair or replacement septic systems
Advanced Treatment Units  Advantex, Norweco, Jet, etc. proprietary names, involve a primary treatment tank larger in size than required by code and contain special filtering media. The larger size and filtering media provides increased bacterial action and significantly reduced nitrate levels.

Mound Systems are above ground sandy mounds where effluent is dosed by a pump into a gravel bed. The sandy mound cleans the effluent prior to its introduction into the ground water.

 


Septic System Design: Our talented staff will design the appropriate septic system on plans provided by the customer based on our test findings. If no plans were provided; at an extra cost we will design a quality site plan for your project. If no plans are available (Ex. Customer is buying the property with no plans at this time) a plot plan showing only our test holes will be generated for the customer. Once the customer has plans for his or her property and is ready for us to design the septic system, the customer can bring in the plans or request plans to be generated for a fee.

Septic System Installation: Can be ordered as part of a package with a percolation test or seperate. Decades of experience constructing and designing septic systems have paid off and we are able to offer competitive prices and unparalleled quality on septic systems we install. Request a quote today.


Conventional Septic Systems include a primary treatment tank (commonly referred to as a Septic Tank) and an effluent dispersal method, usually either Leach Lines or Seepage Pits.

Site Plan / Plot Plan Design: Site Plans prepared by our office are accurate and professional. Our Site Plans are made using state of the art AutoCAD software. Request a quote online or call.

 
Septic Tank is a primary treatment tank that is rated by the number of gallons of sewage/effluent it can hold. The tanks have a baffle inside that separates the interior into two compartments. The inlet side is 2/3 capacity and stores the solid wastes from the structure it serves. The remaining 1/3 is the outlet side compartment. This is where the liquid called effluent is stored until, assisted by gravity flow, it moves on to the dispersal method.
    All septic systems require a Septic Tank. The solids are broken down and digested by aerobic and anaerobic bacteria. It is very important to have the Septic Tank pumped, cleaned and inspected at least every five years.

Seepage Pits are 5-6' O.D. vertical, round Pits, lined with concrete block or precast cast concrete liners. The blocks have voids and liners have weep holes that allow the effluent to be absorbed by the soil sidewall and bottom of the seepage pit. Seepage Pits require less surface area that leach lines.Seepage Pits are recommended for use in areas with no shallow groundwater or bedrock. Seepage Pits may be paved over, driven and parked on.
    The Minimum depth of a seepage pit is 10' below the inlet depth. The maximum depth of a seepage pit is 40' below the inlet depth. A typical Percolation Test for a seepage pit system consists of one to two percolation bores to the depth of the proposed Seepage Pit(s) that are to be installed and one exploratory boring 10' beyond the proposed seepage pit depth. This boring is used to determine the presence or absence of groundwater and bedrock, the depth it is found and to log the soil profile type.

Leach Lines are horizontal trenches around three to six feet deep with either plastic chambers or crushed rock under perforated pipe. The soil at the sides and bottom of the trenches absorbs the effluent liquid. Approximately 45% of the effluent evaporates at the surface. It is not permissible to park over leach lines as this will severely inhibit evaporation of the effluent. Driving or parking of vehicles or the pasturing of hoofed animals is also not permissible over leach lines as this type of action compacts the soil and inhibits evaporation.
    Leach Lines are recommended for larger lots that have sufficient usable area available for a leach field. A Percolation Test for leach lines typically consists of four test holes to the depth of the proposed leach lines and one exploratory boring to at least 15' below grade in the same area and elevation as the proposed leach field.


 Serving Central and Southern California including but not limited to: Riverside County - Perris, Nuevo, Temecula, Murrieta, Winchester, San Jacinto, Riverside, Lake Mathews, Mira Loma, Colton, Moreno Valley, Norco, Indio, Palm Desert, Palm Springs, Corona, Cherry Valley, Lake Elsinore, Hemet, Homeland, Romoland, Sage, Twin Pines, Idlewild, Beaumont, Banning, Menifee, Sun City, Desert Hot Springs, Desert Cities and more. San Bernardino County - San Bernardino, Big Bear, Fontana, Redlands, Ontario, Victorville, Highland, Apple Valley, Running Springs, Yucaipa, Colton,  Crestline, Hesperia, Upland, Rancho Cucamonga, Yucca Valley and more. Also serving Los Angeles County, Orange County, San Luis Obispo County, Ventura County, Santa Barbara County, Imperial County and San Diego County. (LA County)

Call for a Quote in your area!

1-800-564-PERC







             


                   

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