HomeMy WebLinkAboutOWTS DesignSITE EVALUATION
\ SITE AND SO IL EVALUATIONS WERE PERFORMED BY
DERIG J. WAlTER, PE TREVOR L K/l/ELL
BOUNDARIES UNUM/TED INC. H.P. GEOTECHNICAI., INC.
923 COOPER AVE., STE. 201 5020 C.R.#154
GlENWOOOSPR!NGS, COB/601 GlENWOOO SPRINGS, CO 81601
970.945.5252 970.945.7988
2. EVALUATION DATE(S) FE BRUARY 2004 & JUNE 20 15 .
3. SfTOACK REDUIREMENTS FOR A TREATMENT LEVEL 1 STA TRENCH/BED , UNLI NED
SAND FlLTER OR SEEPAGE PIT (PER TABLE 7 -1) AND AN ADWF~525 GPO ·
3.A SPRING OR WELL~ 100 '
3.B . POTAB LE WATER SUPPLY LI NE ~25'
3.C. POTABLE WATER SUPPLY CISTERN~25'
3.0. DWELLING=20'
3.E . PROPERTY LI NE, PIPE OR LINED IRRIGATION DITGH=10'
3.F. INTERM ITIENT IRR IGATION LATERAL, INFILTRATION STRUCnJRE ~25'
3G. LAKE, WATER COURSE, IRRIGATION DITCH, STREAM OR WETLAND ~SO'
3.H. DRY GULCH, CUT BANK OR Fill AREA ~25'
31 SEPTIC TANK~5'
3J RESTRICTIVE LAYER OR GROUNDWATER (VERTICAL)• 3' (TREATMENTLEVEL 1,
PRESSURE DOSING)
3 SETBACK REQUIREMENTS FOR THE SEPTIC TANK SHALL BE (PER TABLE 7-1):
3.A SPRING OR \VELL=50 '
3.B. POTABLE WATER SUPPLYLINE=10'
3.C. POTABLE WATE R SUPP LY CISTERN=25'
3.0 . DWE LLIN G=5'
3.E. PROPERTY LINE , PIPE OR LINED IRRIGATION DITC H ~ 10'
3.F. INTERMIITTNT IRRIGATION LATERAL, INFILTRATION STRUCTURE~1D'
3.G . LAKE WATER COURSE, IRRIGATION DITCH, SIBEAM OR WETLAND~50'
3.H . ORY GULCH, CUT BANK OR FILL AREA=10'
3.1. STA TRENCH/BED, UNLINED SANO FILTER OR SEEPAGE PIT =5'
--· ·-
--
-
/
/
/
/
/"
/
;: ..
S01L EVALUATION
1.
2.
3
SOI L PERCOLATION TESTS IN TH E
NATIVE SOILS (LIGH T TAN SANDY
SILTI LOAM WITH BOULDERS)
BENEATH THE MAN-PLAC ED FILL
RANGED FROM 38-50 MPI
INDICATING A SOIL TIPE OF 2A·3
AND AN LTAR OF 0.3S GP O/S F
THE MAN -PLACE D Fil l IS NOT
ACCEPT ABL E ANO SHALL BE
REMOVED FROM BENEATH THE
SOILS ABSORPTION AREA IT MAY
BE REUSED TD COVER TH E
CHAMBER UNITS.
THE NAT IVE SOILS ARE BOULDER
STREWN. OVEREXCAVATE 3'
MINIMUM BELOW TtiE BASE OF
THE CHAMBER UNITS ANO
BACKFI LL WITH LOAMY SANO OR
SANDY GRAVELS.
___ __,
"'RAGMEN TS . &
BOULDER~
,I N A SANDY ,.
/
CLAY ;
MATRIX .;
(TYPE 3) I
Site & Soils Evaluation
Sca le : N.TS .
1'0 BALL VALVE
ATIACH REMOVAB LE CAP OR
THREADED CLEANOllT ASSEMBLY. FINISH GRADE
IRRIG. VALV E BOX &
THREATdASSEMBLY
'~~'S JllM!
1'X-1/2" PVC ~"fi~--~
REDUCER
1-1/2"0 PVC
ELBOW
Flush Valve
Scale: N.T.S.
1-1/1"0PVC
DISTRIBUTION PIPE
INSTALL Mi\RKER IF CAP IS TO
BE BURIED
4" PVC WYE
4"0 PVC RIS
Cleano ut
scale: NJ.S.
INSPECTION
f'()Rl, TIP. ,.....,..
ATI ACH REMOVAB LE CAP OR
THREADED CLEANOU T ASSEMBLY .
INSTALL MARKER IF CAP IS TO
BE BURIED.
/
/
/
/
/
/
\
/
/
/
/
/
/
\
\
/
/
/
/
/
/
/
/
/
/
/
I
/
/
/
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
)
I
I
I
I
I
I
I
i
I
i
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I :
I ;
I ;
I I
I I I I
I II I / /
I I
I I I / I i \"'~,-1 ( 1
I I / / .. ;' ::. \~~ ~~:t~:·.:' ' < '1
' II
/'
"
'
"
·\:.·-:·<----;..:..:i.c~. ,.
; ' , I
J I J / I I ,'.. ·}~~<::~ .. · . .;t~1;~f;~;~:~:.~~~-4N~~~oo .d~I~ t"=zootr ~ /",H ~,,~~
I
I II I ! II ..-~~~.....,_.... .......... .....,~ ......... ~~~.-..;~~~~....:.~....,..,._.:;;....._....;.~-.;;;;;....;.~--1
I I I I SYSTEM NOTES
I
I
I
I
I I
/ / / / j j I ALL CONSTRUCTION SHALL BE IN ACCOROANCEWITH PlrnN COUNT/ REGULATION 6.28 ONSITE WASTEWATER TREATMENT SYSTEMS (OWTS), MOST CURRENT
I / / / EDITION AND LOCAL AGENCY REOUIREMEN1S WHICH MAY OR MAY NOT SPECIFICALLY BE NOTEO ON THE DRAWINGS . THE CONTRACTOR SHALL BE RESPONSIBLE
/ J FOR KNOWING AND CONFORMING TO SUCH SPEC IFIC DETAILS AS ARE REFERRED TO IN THE ABOVE MENTIONED REGULATIONS. Tl·H S DRAWING DO ES NOT -
/ j / CONSTITUTE AN OWTS PERMIT. A PERMIT MUST BE OBTAINED FROM APPROPRIATE LOCAL AGENCY. THE ENGINEER MUST OBSERVE THE CONSTRUCTED SYSTEM
I I
I /I If BEFORE BACKFIL L ANO PROVIDE A LETIER DF INSPECTION AS REOU IREO BY THE LOCAL AGENCY. A REQUEST FOR INSPECTION MUST BE MAOE BY THE
j CONTRACTOR AT LEAST 48 -HDURS PRIOR i O THE EXPEC TED TIME Of BACKFILLING.
I 11 1
1
/ /
~ II II II II
I II II II II
I II II II II
I
f : : I :
I
I
I
I
I
I
I
I
I
2. DEMAND CALCULATIONS (SEC.43.6.A.2.h)
2.A. FOUR (4) BEDROOM RESIDENCE USlllG DOSING AND TREATMENTLEVEL 1 (TU).
2.B. AVERAGE DAILY WASTEWATER FLO~(ADW~ AND ORGANIC LOAD RATE (BOD•)•
2.B.1. SING LE FAMILY DWELLI NG: 75 gidc & 0.20 BOO, lbs/day
2.B.2 . ADWF" 75 gpd" (3 BEDROOMS' 2 PERSONSIBEDROOM + 1 BEDROOM" 1 PERSON/BEDROOM) ~525 gpd
2.B.3 . BOO,~ 0.20 lbs/day" (3 BEDROOMS" 2 PERSONS/BEDROOM + 1 BEDROOM '1 PERSON/BEDROOM) ~ 140 lbs/day
BOD.mg/L = 8001*1 Ol0 ,000 = 1.40 l b~day*1 ,000,000 = 319 .BmgJL
ADWF ' 8.34 525 gpd'B.34
2.8.4 . C80D1 = BOO,* 0.85 = 272 mUL
3 SEPTIC TANK (SEC.43 9.B 2 a)•
3.A SEPTIC TANK 4 BE DROOMS = 1,250 GALLONS.
3.B DOSING SHALL REQUIRE THE US E OFA 2,000 -GALLON TINO-COMPARTMENTTANK OR A 1,S<JO -GALLON TINO-COMPARTMEtlTTANK IN SERIES WITH A
500 -GALLON SINGLE CDMPARTMENlTANK EQUIPPED WITH A DOSING PUMP STATION.
I
I
j : : : :
I
I
I
I I / / ; /
I / / / /
I / / / /
I / / / /
r
I
I I
I
3.C. THE TANK IS NOT SUBJECT TO BUOY.\NCY.
I
I
I
I
I
I
I
I
I
I
I
!
I
I
I
I
i
f
I
I
J
I
I
I
I
I
I
I
!
I / / i :
I I I I I
I J I I
I
I
I
I I I I I
I II II // )
I I I ;
I II II II II
I
I
I
I
I
I
I
)
I
I
I
I
I
I
I
I
I
I
I
I
I
. /
I
I
I
4. ABSORPTION AREA CALCULATIONS
4A GROUNDWATER WAS NOT ENCOUtll!RED, THE PROPERTY CONmNS SLOPES LESS THAN 20%, BUTTHE SOILS CONTAIN AND LARGE QUANTITY OF
BOULDERS. THEREFORE, THE SYSTE\1 SHAll BE A PRESSURE DOSED SHALLOW GRAVEllESS CHAMBER SYSTEM IN A SEDUENCED TRENCH
CONFIGURATION.
4.B. SOILS WERE ANALY1ED BY HEPWOR 1H-PAWLAK GEOTECHNICAL, INC. (NOVEMBER 14, 2014; PROJECT N0.114 476A) TO BE BASALTFRAGMENTS UP TO
BOULDER SIZE IN A SANDY CLAY MAiRIX (TYPE-3) WITH A TREATMENT LEVEL 1 LONG TERM ACCEPTANCE RATE (LTAR) OF 0.35 gpd/SF.
4.C. MINIMUM SOIL TREATMENT AREA, A
A ~ ADWF ~ 525 "1500 S.f.
LTAR 0.35 gpd/S.F.
4.0. SIZE AOJUSTMENTFACTORS• PRESSJREOOSING ~ 1.0; CHAMBER BED ~ 0.7
4.0 .1. A.adj=1500SF'*0.7=1050SF
4.E . GRAVELLESS CHAMBER SYSTEM:
4.E.1 IN FILTRATOR OUICK4: 1050 SF /12 SF/llN IT ~ 88 UN[S IN BED CONFIGURATION .
4.E .2. ADS BIO DIFFUSER (STANDARD): I OSO Sf/ 1 B/5 SF/llNIT ~ 56 UNITS IN A BED CONFIGURATION
5. THIS SYSTEM IS SIZED FOR TYPICAL DOM!STIC WASTES ON LY. BACKWASH OR FLUSHING FLOWS FOR REVERSE OSMOSIS UNITES OR WATER SOFTENERS AND/OR
FILTERS SHOULD NOT BE lt/TRODUCED IND THIS SYSTEM .
6. CLEAN OllTS ARE REQUIRED AT THE HOUS' l,ND AT ALL BENDS AND AT LEAST EVERY 100-FEET BETWEEN THE HOUSE ANO THE SEPTIC TANK.
7. THE COt/TRACTOR SHALL BE RESPONSIO LE FOR INSTAlllNG ALL WATER TIGH T CDMPONEtlTS THROUGHOUT THE SYSTEM TO PREVEt/T INFILTRATION.
B. INSTALL RISERS AS NECESSARY TO BRINGALL ACCESS f'()RTS TO FINAL GRADE PORTS SHALL BE MAR KEO IF CAPS ARE TO BE BURIED.
9. INSTALL 3-INCHES OF BLUEBOARD INSUUTION , 3-FEETWIDE, OVER SE\\IER AND EFFLUENT PIPE WHEREVER DEPTH IS LESS THAN 5-FEET. UNDER NO
CIRCUMSTANCES SHALL COVER BE LESS l HAN 2-FEET
/
/ /
/
/
/
/
/
/
/
I /
I
/
I
I
I
I I I I I I I
I
I
I
I
) I
I 10 SITE PLAN INFORMATION FROM ROCKY MUUNTAIN SURVrnNG. LOCATIONS OF ALL COMPONENTS MAY BE VARIED AS NECESSARY AS LONG AS All MINIMUM
DISTANCES ANO SLOPES MEET THOSE REtUIRED.
/ /
/
/
/
GEN ERAL ABSORPTION AREA NITTES
1. INSTALL CHAMBER UN ITS IN ACCORDANCE WITH
MAN UFACTURER'S RECOMM ENDATIONS.
2. ABSOR PTION BEDS SHALL NO T EXCEED 12' WID E BY
I 00-FEET IN LENGTH , SHALL PARAllEL THE
TOPOGRAP HY AND SHAL L BE INSTALLED IN A
RECTANG ULAR PAITTRN WHENEVER POSSIBLE
3. THE BOTTOM OF THE ABSORPTION BED SHAll BE
LEVEL AND THE BOTTOM AND SIDEWALLS MUST BE
RAK ED TO REMOVE ANY SO!L SMEARS INCURRED
DURI NG THE EXCAVATION _ FAILURE TO DO SO MAY
REQUI RE THE CONTRACTOR TO REPLACE THE
ABSORPTION FIELD AT HIStllER OWN EXPENSE.
/
I
/
/ /
/ /
I
/
/
4_ DRAINAG E SWALES ARE TO BE PROVI DED ABM
AND AROUND THE FIELD. AS NECESSARY, TO
PREVENT SURFACE RUNOFF FROM EN TERING
ABSORPTION AREA.
5. NO EXCAVATION OFTHE ABSORPTION FIELD IS TO
BE DONE DURING WET WEATH ER AND USE OF
RUBBER TIRE VEHICLES OVER THE AB SORPTIO'I
AREA IS STRICTLY PROHIBITED.
/
/
/
6. UNSUITAB LE MATERIAL EXISTING WI THIN TH E FIELD
SHALL BE EXCAVATED ANO BACKFILL SHALL
CONSIST OF IMPORTED LOAMY SAND OR SAMJY
GRAVEL THE ENGINEER SHALL BE CONTACTED IF
BEDROCK OR GROUNDWATER~ ENCOUtlTERED IN
THE OVER-EXCAVATION.
7. TOPSOI L COVER MAY BE VARIED (1-FOO T MI NIM UM,
2-FOOT MAXIMUM) TO ALLOW FDR LANDSCAPING.
Pressure Dosin Chamber Bed
Scale : N.T .S.
I I I I I
) I I I I
I I I I
COVER WITH 5" OF TOPSOIL
AND REVEGETATE
I
I
/
I
I I
I
/
Effluent Pumping System -2nd Compariment Drawdown
Fiberglass Gaskele d Lid------..
wit11 Stainless Ste el Bul ls
Slope Ground
Away from Riser
PVC Rise r with Grommet(s)---"
0
C()ntro l Panel
·'
To Control Panel -1-
Top View (NTS)
Simplex Pumping Sys tem
!+--~ ..
Condui t Seal--t--+-~
PVC Sp lice Box
w/Cord Grips
Fjperglass Gasketed Lid with
S1ainless Steel Bolts
ln lcl Tee------.-"<:r-::tr----.-t----,
Patents# 4,439,323 & 5,492,635
Foreign Patents May Apply
@ 2006 , Orenco Systems, Inc .
ritttt-TT----Flow lnducei
n .f-)lf-1-+----Le ~cl Go11\rol
"' l
2,000 Gallon
Two-Compartment
Concrele Tank
(Comp. #1=1,200 Gal. Min.)
NO TES:
c
I
1. THE EXISTING TANK SYSTEM IS TO BE REMOVED/ND DISPOSED .
2. FLOATS SHALL BE SET FOR A DOSING VOLUME U 100 GALLONS (3 DOSES PER DAY).
3. SYSTEM TO BE INSTALLED IN CONFORMANCE wnH MANUFACTURER'S RECOMMENDATIONS.
4. THE DISCHARGE PUMP SHALL BE A HIGH HEAD ~RTICAL TURB INE PUMP. PUMP RATE AND
MODEL TO BE SPECIFIED BY THE MANUFACTURER CONTACT SCG ENTERPRISES AT
303.697-~404 FOR SYSTEM SPECIFICATIONSANDl~lSTALLATION PROCEDURES .
5. THE PUMP SYSTEMS SHALL BE CONNECTED TOM ALARM WH ICH SHALL BE BOTH AUDIBLE
ANO VISIBLE, LOCATED WITHIN THE RESIDENCE AID ON A CIRCUIT SEPARATE FROM THE PUMP.
6. THE SYSTEM SUPPLIER SHAll PRO~DE THE OWICR WITH AN OPERATIONS AND MAINTENANCE
MANUAL WHICH INCLUDES A MAltlTENANCE SCH IDULE.
7. TANK DIMENSIONS ARE BASED ON A VALLEY PRE !AST 2,000 GALLON TWO-COMPARTMEN T
TANK WITH A HIGH HEAO PUMP.
Se tic Tan t & Dosin
Scale : N.T .S
Float Assembly
-H~---Fi lter Carbidge
+-1----Vau!l Inlet Ports
~---Biotube~ump Vault
Orenco Systems®
ln~rporat ed
814 AIRWAY AVENUE
SUTHER LI N, OREGOO
97479 -9012
TOLL FREE:
(800) 348-9843
TELEPHONE :
(541) 459-4449
FACSIMILE:
(541) 459 -2884
NDW-TD-EPS-OJ
Rev_ J_a (03/06)
0
Civil Engineering
~ .Surveying
~
-;.· & rJJeyuntf
~G__,_,
;>,... ,.
.'11.,-
te<i · Inc·
923 Cooper Avenue
Suite 201
Glenwood Springs, CO 81601
tele: 970.945.5252
fax: 970.384,2833
Eng inee r or Surveyor Seal
Client Informa tion:
BLUHOMES
1245 NIMITZ AVENUEW
VALLEJO, CA 94592
617.833.3538
NORTH
40'
Scale: 1'"" 20'
Know what's below.
Call before you dig.
PRruEGT NO .
150 11
Sheet
FILENAME ·
15011-c-base.dwg
&Jwiner:
Draft er
BUI
Rf~~1s
C.3