FORMCELL Living Filter®
www.formcell.com       formcell@nitrap.com
Connecticut (860) 604-6146 - (203) 605-6095
EFFECTIVE LEACHING AREA RATING
(Adjusted to State of Connecticut Department of Health Formula)
for
Leaching and Filter devices approved for use with Septic Systems
in the State of Connecticut
as approved by
 the Commissioner of the Connecticut Department of Public Health

The Products are listed in order of efficiency to deliver effluent into the subterranean.  A higher rating will reduce space requirements for both the main system and the reserve area*** for most installations.  This will preserve the environment by providing greater separating distances to sensitive areas such as water supply wells, aquifers, open streams and water in addition to providing more lot area for other uses.

All devices are measured for the total wetted perimeter (actual surface area where the biological clogging layer forms).   The State of Connecticut Board of Health then assign an "Interface Factor (IF)" to the wetted perimeter interface.  Some products may have more than one type of interface and are thus assigned a factor for each.  The IF or the combination of more than one type of interface allows the CT DPH to assign en Effective Leaching Unit (ELU) for each product which leads to a rating in sf per lineal foot of installed device.
The Living Filter is assigned the lowest IF (.75) and the open bottom chamber the highest IF (2.0) thus the ELU rating of the Living Filter is much reduced vs the open bottom chambers.  This translates into open bottom chambers being rated for more (20%) effective leaching area than that physically present while the Living Filter is reduced by 55% from that physically present.  It is assumed that aggregate and filter membrane masking at the infiltrative surface reduce the available infiltrative surface by 55% while the open bottom chambers are given a 20% increase added to the actual surface area based on the assumption that no masking occurs in direct soil open bottom interfaces.   The actual wetted perimeter (WP) of the Living Filter LF3626 rated at 20.4 sf/lf is actually 45.5 sf/lf while the actual WP of an open bottom chambers rated at 4.0 sf/lf may be less (3.5 sf/lf +/-).  The Ruck A fin is rated at 7 sf/lf with actual WP being approximately 7.7 sf/lf.  The ELU rating of the Living Filter is thus ultra conservative and provides a significant reserve which should also result in extended performance.
 
 
Rank  PRODUCT NAME           Height    /     Width       ELA   C/C
     1  Living Filter LF3626     36" High x 64" Wide      20.4 sf/lf    27 ft
     2  Living Filter LF3026     30" High x 64" Wide      17.1 sf/lf    24ft
     3 Living Filter LF2426      24" High x 64" Wide      14.2 sf/lf    21 ft
     4 Living Filter LF1826      18" High x 64" Wide      11.0 sf/lf    21 ft
     5 Living Filter LF3610      36" High x 29" Wide      10.1 sf/lf    21 ft
     6 Concrete Gallery             48" High x 72" Wide (incl. stone)        9.2 sf/lf    18 ft
     7 Living Filter LF3010      30" High x 29" Wide        8.6 sf/lf    18 ft
     8 Concrete Gallery             36" High x 72" Wide (incl. stone)        8.0 sf/lf    18 ft
     9 Living Filter LF1224      12" High x 60" Wide        7.4 sf/lf    18 ft
   10 Concrete Gallery             27" High x 72" Wide (incl. stone)        7.1 sf/lf    15ft
   11 Ruck A Fins -R1032C      7" High x 32" Wide        7.0 sf/lf    15ft
   12 Living Filter LF2410      24" High x 29" Wide        7.0 sf/lf    15ft
   13 Concrete Gallery             24" High x 72" Wide (incl. stone)        6.8 sf/lf    15ft
   14 Concrete Gallery             18" High x 72" Wide (incl. stone)        6.2 sf/lf    15ft
   15 Concrete Gallery             12" High x 72" Wide (incl. stone)        5.9 sf/lf    15ft
   16 30" Recharger 330         30" High x 52" Wide        5.6 sf/lf    15ft
   17 Living Filter LF1810     18" High x 29" Wide        5.5 sf/lf    15ft
   18 Eljen In-Drain Type B      7" High x 36" Wide        4.7 sf/lf    12ft
   19 20" Recharger 180          20" High x 36" Wide        4.1 sf/lf    12ft
   20 Living Filter LF1210      12" High x 29" Wide        3.9 sf/lf      9ft
   21 14" Biodiffuser             13.5" High x 34" Wide        3.7 sf/lf      9ft 
   22 12" Contactor 100        12.5" High x 36" Wide         3.6 sf/lf      9ft 
   22 11" Biodiffuser                11" High x 34" Wide        3.6 sf/lf      9ft 
   22 12" EnviroChamber        12" High x 34" Wide (Standard)        3.6 sf/lf      9ft 
   23 18" Contactor 125           18" High x 26.5" Wide         2.9 sf/lf      9ft 
   24 12" Contactor  75         12.4" High x 26.5" Wide        2.6 sf/lf      9ft 
   25 ENVIRO-SEPTIC           12" Diameter        2.3 sf/lf      9ft 
   25 GEO-FLOW                     12" Diameter        2.3 sf/lf      9ft
   26 SIMPLE-SEPTIC           12" Diameter        1.5 sf/lf      9ft
   27 SB-2                                   10" Diameter        0.9 sf/lf      9ft
   20 Infiltrator sidewinder    16" High x 34" Wide (High Capacity)         3.9 sf/lf      9ft
   21 Infiltrator Sidewinder    12" High x 34" Wide (Standard)         3.7 sf/lf      9ft
***

NOTE to Engineers, Designers and Installers:  If Living Filter products rated at over 10.2 sf/lf (effective leaching area) are to be used to meet reserve area requirements, the plans, specifications and site must be reviewed and approved by FORM CELL Research, Inc.

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