HomeMy WebLinkAboutOWTS Site Plan\
\
I
I
\
\
I
(
I
I I L~ .... L" i
Ho ltillll ,!
Bio-dtrruur Chamber (J'XS' ea unit)
3 Rowse1f14unils H ,42T11tal
·or•quM!l•nti.ngth
This Onsite Watewater Treatmenl System is designed to serve a s ingle family residence with 3 bedrooms
being approxinately 1514 s.f. of living area.
According to Garfiek:l County regulations for design average waste flow the calculations utilize the
following; 3 berdrooms with 2 persons per bedroom at 75gpd/person.
Therefore:
Sewage Flow:
6 persons X 75 gpd/ person = 450 gpd
Average Daily Waste Flow= 450 gpd
Design Daily Waste Flow= 1.50 x Average Daily Wasle Fklw:
1-50 x 450 gpd = 675 gpd
Minimum recommended concrete septic tank size =1000 ganons
Percolation testing was performed by Bell Consulting, LLC. Results of percolation testing were as follows:
Percolation Rate 1: 61 min I In
Percolation Rate 2: BO min I in
Percolation Ra le 3: BO min I in
Us o • Pora>i.tlon R.11• • 80 min / In
--r
(
I. .... _
---....
.... ~=~=====,,------}
;.. J .. M.R•old-
.lbMlreln7lo •lS1•1L -
loealion;mndHoorplan
p1Wd•dby11th"rs
-I I
~ D 40 M ---distpipes2"-0AE HORIZONTAL GRAPHIC SCALE IN FEET
1 INCH ,. 40 FEET
The requir_ed absorption area (A) fur a nonnal gravel type leach area is calculated using the fo4Jowing fomiula :
A= (Design flow /5) x Sq.root of {Ave. Percolation Rate)
Therefore , A= 675 x Sq.root of BO
5
A=1213sf
~arfiekt County allows a maximum reduction of 50% of Lhe required leaching area for a graveless type design
m a Trench configuration and maximum 30o/o reduction for a Bed configuration , This is a Trench connguralion,
Therel'ore the required Area= 1213 sfx0.5 = 607 sf
Required number of B io -diffuser Untt.s = 607 I 15 = 41 units
Tl'\e leech T1e11ehcs :3haR be 6 rr>ns, 7 ttn;ts long for s total of 4l ttnils .
The conslructed trenches are 3 rows wtt.h 14 units for a total of42 units,
I
BELL CONSULTING, LLC Joanna Shaffer
634 CR 296, Rifle, CO
I
I
I
I I
I I
\
Minimum Horizontal Setbacks:
Leachfield Setback from Weis:
SeptK: tank setback from wells :
Setback from River or live stream:
Setback from Dry Gulch:
100 ft
50 ft
50 ft
25 ft
The above designed ISDS shall be installed satisfying all
minimum setbacks and design standards as described by
Garfield County Planning Dept. ISDS regulations and
according lo all manufacturers specifications and
recommendations.
Resklence domestic water is served by an existing well on
site .
Existing Conditions, Boundary information and proposed
residence localion provided by owner.
OWTS Site Plan
AS-BUILT PO il<nl
JUJr,c.dot•ll6SO
Voi<.-:"111'2~-9111 Fu;:,'70162S-'U5 ~...,..;:::=,--~~~~~~~~-4,~,.~~~.-_-.-,-~-,--.-_.-,~.-... ~._-_-~~
Shaffer owrs
1