*****Massachusetts Septic Tank***** *****Must be left 1/4 full at all times***** *****Below Ground Use Only***** (2) - 20" Manways with watertight lid Two Compartment Plastic Septic Tank Preplumbed - 4" inlet and outlets Includes: (2) Sanitary Tees assembled w/ sealant. Schedule 40 plumbing connections. Standard plumbing all local installers or contractors are familiar with. Riser Extensions Not Included Great item for shipment, indestructible. Rotationally molded, one-piece, seamless, watertight tank. Polyethylene is unaffected by soil chemicals, sewage gases. Polyethylene tanks will not rust or errode. Strict quality guidelines ensure an environmentally safe septic tank. Approved for use in: Massachusetts Height to the inlet N/A Height to the outlet N/A 3 Year Manufacturers Warranty Tank ships with lid attached to the tank with stainless steel screws and a foamed, watertight polyethylene gasket between the lid and tank. N-41768 Pick Up & Drop Ship Locations in: Washougal, Washington Frequently Asked Septic Tank Questions 1. Can I install a septic tank under a driveway? No, installing the plastic septic tank under a driveway is not permitted and will void the warranty. Do not locate tanks beneath driveways or in the pathway of heavy or vehicular traffic areas. 2. Is there a sand/gravel mixture recommended for bedding/backfill? Yes, the sand/gravel mixture, commonly called "pea gravel" mixture is recommended. 3. Can I use a septic tank above ground? Underground plastic septic tanks are designed for below ground use only. Using the tanks above ground can result in deformation of the tank. It is far more cost-effective to utilize an above ground storage tank that is specifically designed for above ground use and applications. 4. Can hot water be stored in plastic septic tanks? Do not subject the tank to water temperature higher than 100 deg F, polyethylene storage tanks have a maximum storage temperature of 120 deg F. Contents with a temperature in excess of 120 def F, even for a short period of time, can weaken the tank's structural integrity and make it susceptible to deformation and failure. 5. How do you access an underground plastic septic tanks? Each plastic septic tank comes equipped a manhole access hatches. In addition, risers can be added to the top of the tank providing ground level access. Without a riser you would need to dig up the soil above the manway to gain access.ility. 6. Can I pick up a plastic septic tank nearby? In many cases yes. To pick up a plastic septic tank and save on freight, requires you placing your order. Upon being notified that the tank is ready for pick-up, Plastic-mart will provide you with a 6 digit trip # which allows you go and pick up your tank M-F 8:30 am - 2:30 pm. Plastic-mart and the local manufacturers appreciate the opportunity to provide local pick and the cooperation required for the process to be efficient. Freight Class: 300 Ship Weight: 500