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HomeMy WebLinkAboutOWTS Design 10.09.20231P, 1 � , i � � 1 11�111I�1111y1.111�11II�1 r I-z { �� �1l`�111 4 1III�ly��I`I�IIItill114lII ; 1 } , , ti1II, l 111 111� 11I1 SITE BENCHMARK ELEV: 7008.14' 1 ti 111 loll I 1 I� 11 I I11 I1` Know what's below. 1;. 1 1 1 1 11 1 1 1 1 1 11 II 1 Call before you dig. I BEFORE YOU DIG, GRADE OR EXCAVATE l 1 1 1 y} 4 FORTHE MARKING OF UNDERGROUND MEMBER UTILITIES 3� j 1 � 111�1111�1111�11 �,` , 1 1ci 1 1 1 1111 11 1 �3� 1 I I 1 1� �; 11 1,� 1111� �,�• n, I tit 0 1 11 BUILDING F dTE.R'I, 11 V INSIDE AND 6." OUTSI E 1 / 1 I I} 1 1tl tit til 11 i THREE BEDROOM RESIDENCE... a HOUSE LOCATION q4 '. 4 ' 7030.00 FF: m 11 I s} DRIVEWAY 4" 2-WAY CLEANOUT ' r INV. 1.5'-2' BELOW EX GRADE± 4" PVC SEWER PIPE @ 296, f USED SCHD-40 ! ! 1.5" SCHD-40 TRANSPORT PIPE. INSTALLED AT f ! 1 1 + 1 MIN. 2.0% FOR DRAINAGE INTO CHAMBERS INSTALLED 2-COMPARTMENT 1250-GALLON CONCRETE SEPTIC TANK (VALLEY PRECAST ITEM # 4.7%- ='' `'1 1250t-2CP-HH) INSTALLED WITH (2) 24" DIA. RIBBED PVC RISERS W/ LIDS AT THE SURFACE. PREVIOUS SOIL PROFILE PIT ` 2 INSTALLED ORENCO SIMPLEX EFFLUENT PUMP ASSEMBLY. (PVU57-1819-L) W/P300511 PUMP), W/ (KA 2-10-23) 1.50" DISCHARGE ASSEMBLIES. DEPTH TO TOP OF TANK FROM GRADE IS APPROX. 1'. 1 1/2" PVC SCHD-40 PERFORATED PIPE DISTRIBUTION LATERALS. dp DRILL 3/16-INCH DIA. ORIFICES ON 2.75' CENTERS ALONG PIPE (TYP.). ORIENT ORIFICES UPWARD BETWEEN FIRST AND LAST. INSTALLED FIRST & LAST ORIFICES ORIENTED DOWNWARD W/ SNAP ON SPRAY SHIELDS. I SOIL PROFILE PIT (SE 7-6-23) PP-t 41.0' E ABSORPTION/TREATMENT FIELD (3-BEDROOM CAPACITY) i 1 r USED 40 QUICK-4 CHAMBERS IN 4 TRENCHES WITH 10 CHAMBERS PER ROW FOR A TOTAL ABSORPTION AREA OF 420 5.F. THE SYSTEM WAS PLUMBED FOR EQUAL PRE5SURE 40 DISTRIBUTION. THE CHAMBERS WERE INSTALLED ON LEVEL GRADE IN EACH TRENCH. <, THE BOTTOM OF EACH TRENCH WAS EXCAVATED TO A MAXIMUM AVERAGE DEPTH OF 1.5" PVC DISTRIBUTION MANIFOLD (TYP.) z 20 INCHES BELOW THE EXISTING SURFACE GRADES, WITHIN THE UPPER HORIZON OF 1.5" SCHD-40 DI5TRIBUTION PIPES INSTALLED AT MIN. ` THE NATIVE SANDY SILT LOAM SOILS & BACKFILLED WITH A MINIMUM 12-INCHES OF 1% FROM HP TEE (TYP) TO LATERAL PIPE MANIFOLD TEE ar COVER OVER THE CHAMBERS. THE FINISH GRADE ACROSS THE FIELD WAS SLIGHTLY CONNECTION AT HEAD OF EACH TRENCH PAIR MOUNDED A MINIMUM 3-INCHES ABOVE EXISTING ADJACENT GRADES. 4` 1 INSTALLED CHAMBER END CAP ON ALL END CHAMBERS INSTALLED 4" RISER PIPE INSPECTION PORT AT INSTALLED 4" RISER PIPE INSPECTION PORT EXTEND RISER W/ HEAD END OF EACH CHAMBER TRENCH (TYP.) PP-3 PUSH ON CAP MIN. 4" BELOW FINISH GRADE & COVER WITH 5" DIA. VALVE BOX SET WITH LID 1" ABOVE FINSH GRADE 73b 4 Q .r (TYP. EACH TRENCH CHAMBER END CAP) o EXCAVATION DEPTH 1.5' MIN.-4' MAX. BELOW SURFACE m INSTALLED 1.5" FLUSH BALL VALVE ON END OF EACH DISTRIBUTION GRADE. MINIMUM. 12" COVER OVER TOP OF CHAMBERS E LATERAL. BELOW EACH INSPECTION PORT (TYP. END EA. ROW) 01 FILL & GRADE FIELD AREA APPROXIMATELY 3"-6" ABOVE EXISTING SURFACE GRADES 1 r r 1 SOIL. PROFILE PIT (SE 7-6-23) - 1 .- . C)rIW TABLE 0JAVE RADUS I DUTA LENCTN CHORD FlEAraNr CHOW C1 145.97 1' ' ' 91.10 S W94'e E 8&07 C2 232.91 6"2 '45" 107.16 S DO-01 105.22 C3 162.3.3 145,71 & 4n4221 E 140.22 G1 111,67 6 176.17 463.32 C5 75.76 , 4-14' ' $37.63 5 6"-roa, W 119.60 C6 300.40 283.40 273.05 0'wa"1 t'a ' 72-80 a - W 6&04 ve 61.03 - '4 - 47,As 44 w 41.23 C'g 50.15 119,07 4 ' 00 t&96 aNl4 ' Gil 53.76 37.49 W512676 NC13 N.- 201.46 '4 - 32.22 C14 666A7 57,y7 N C15 38.W 31.68 r r r A - 26'23 46" R - 930.36 rr L - 42&62 / C8- N 4941.23• E r C - 424.84 r f Iq 01 rr ' r r 23. r- i-� r rr rr r A - 10ro2 S3 r- R - 1417.62 r L - 246.81 Ca- N 67'B4'42' E C - 24& 29 6940 PONT Or BEMNMG GRAN IC SCALE ' ..Q1TETO 52 SE COb 1k425.6CTDON 36 Bd90 "59/6d Q 100 200 400 0�.9�� ----- I f 7 A, rrr ��x �9y+s THE .W 696a ( IN FEET) I I inch = 200 ft. r r m sw CORNER Ion am ALOW 15.0 EL ICAL EASEMENT 1 s� I 800.00 o'PRO T}E Tenunus x y TO SE CORNER SECAON 36 549'21'01'E 153o,6p,� I s� PARCEL 1 8S ±48.160 AC. z _ l; W Q o i Z 25' WDF ACCESS AND / 15' HIDE UTI-TY > ASEMENT ELECTICAL EASEMENT r THE Sf7iYNNUS'- r TIC TO SE CORNER SECT ON 76 + I l / Hill AND YARD HYDRANT SS745'S9'E 969,00' ' �]�•yr''7 rr v6Di POWER eax �p55wy o �❑� _ L@ 5 NB9434'23' !' ti / 30' RADIUS EASEMENT O aVr l�A / FOR WELL POWER LIRE j P091T OF BEGINNING Js, % ��� 4 J.1t TIE TO SE CORNER SECTION sa rr 569Z9 oe a 162e7 - TWO YARD = 25.0 ROAD AND UTILITY EP SEME r HYDRANTS 7074 PARCEL 2�(JJY��f�J�� rJrr� EXISTING WATERLINE 6 WATERLINE EASEMENT R30.0 WELL E*S Nus 1y 568',r29'E ,asa 1 MUL111 STORY WOOD HOUSE WATERLINE EASEM IDS❑ `� (� [l+11/ JJl4 J�• r✓ I J�lllll}�Srr�lf �� . /1zJ PW OF arGMNO 2000 TIE TO 9E C011t SECTION 36 s73�1'i4"E 97+.g2' 75' 1VEDE WATERLINE EASEMENT �d9 THE 1EAY91us 9E TEEMENS -Ti TO SC COFWEMR 9U&TFON 35 9E TO SE CORNER SECDON 311 S7P1O0'o7-E 67&76' PROPANE TANK a PUMP %1uSE I 15' VROE GAS n j�r[, � ! !7 � �•J� � J � I ' !''. LINE EASEMENT HO 15.@�A�IMENT $ UNDERGROUND GAS POriER LINE 5895423 W 4, 5 89'54'23- W 2023.4T PaNT m ra-rmNmn lxnfle RC P.D.P SE CDR W 1205 KM ALUM C►p FWD ti - 429,97 - 52&23 B- S 71'52'10' E �t - 495.63 1 Z COYT LOT 7 SEC- 31 T. 7 5„ R, 66 W. -R AND CAP a THE 61N P,Y, IN PLACE s 1/4 gaRNE6 sE s 1975 GARCO &U5� cw, a-7w AW ,r 1 .- J / . ' 1 250 Callon Tap Seam - 2CP 111111111111011111 '121111111114NW411111111 with High Head Pump 4W TOP DMOM • 14r PK PWfVMMM W pr AS1Y �: VkW • i.e T O ?D .19d.)q er -k R' FL944TA{ARF6 - tr - 6,000 PSI Ytn. Inarallntlere T-k 1. E...t - IS• m*, -d c.a a Pp TAI9T - an U< au W e ti...n umRs.nir on _ O .k.. 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EXCAVATED MATERIAL COMPACTED TO 90% 4" STANDARD PROCTOR NATIVE SCREENED 4" TRENCH CROSS-SECTION FOR SDR-35.0R SCH-40 PIPES N.T.S. 1 Kobielusz Design Calculations OWTS The onsite wastewater treatment system (OWTS) was installed to serve a small single story residential structure founded on a crawl space foundation. The design flow treatment capacity is calculated as follows for a minimum 3-bedroom single family residence. From the Regulation 43 usage table : Minimum population based on 3 bedrooms = 6 persons. Gallons per day per person =75 gal/person/day, No peaking factor Max. Design flow (Qd)gallons/day = (# of people) x (avg. flow)gal/person/day. Design flow Qd = 6*75=450 gpd Septic Tank Design Use a 1250 gallon, two compartment concrete septic tank with a high head pump assembly in the second compartment. Current and Previous Sub Surface Conditions and Testing An additional site assessment and soils evaluation was performed by SE on July 6, 2023. Two new profile pits were excavated adjacent to the propopose field atthe location as Shawn on the plan. Soils observed in the pits were sampled by the performance of USDA sail texture and structure characterization methods. The soils below 9 inches of topsoil consist of sandy loam that has moderate dense granular structure with gravels and scattered cobble size sandstone rock fragments with rock content less than 35%. The soils observed were dry and are consistent to the the 7-8 foot depth of the profile pits. This soil type 2 has an effective loading rate for conventional soil treatment of 0.6 gal/S.F./day for a level 1 conventional treatment system. The type 2 soils within the new proposed soil treatment area (STA] are consistent over the moderately sloped vegetated area. No limiting layer, fractured bedrock or free water was encountered within the profile pit excavations. A previous subsurface soil investigation and site assessment was performed by Kumar & Associates on February 10, 2023. The soils in the proposed field envelope area were sampled and characterized by application of hydrometer and sieve analysis from samples from three 4-5 foot deep profile pits the shallow soils in these excavations were sampled, observed and tested at 2-3, and 4-5 foot depths. The native soils encountered below a foot of topsoil consist of relatively dense, sandy loam with gravels and scattered cobble size sandstone rock fragments with rock content less than 35%. The soils at depth have an effective loading rate for of 0.6 Gal/S.F./day for a level 1 treatment system. The equivalent percolation rate is assumed to be 16-25 minutes per inch. The soils appear to be consistent across the site from observations in other excavations. No free water was encountered in the pit excavations and soils were slightly moist to moist. Seasonal high groundwater levels are expected to be below 15 feet from the existing surface grades in the area of the proposed field. Soil Treatment Area/ Pressure dosed chamber trench Absorption System Design The treatment/absorption trenches were designed based on utilizing the effective Long Term Acceptance Rate (LTAR) for native soils and the application of appropriate loading factors for a new treatment system utilizing pressure dosed chamber trenched with custom perforated distribution laterals. The treatment system consists of pressure dosed graveless chamber trenches installed in native sail, in accordance with Regulation 43 design criteria for this technology. Lang Term Acceptance Rate [LTAR] Considering the allowable application of the OWTS regulation 43 and CDPHE approved Distribution Product for Infiltrator Water Technologies, Quick4 Infiltrators product: Receiving septic tank effluent, the treatment level-1 for Quick4 Chambers requires the infiltrative surface being at least 4-feet above a limiting layer (43.8. Table 7-2.4); Maximum hydraulic loading rate fcrTL1 effluent is the long term acceptance rate of the Type 2 receiving soil is 0.6 gal./S.F./day) (Table 10-1 &10-1A.). A(sf) = Qd x L.F.1 x L.F.2.: A = Area; LTAR LTAR = 0.6 gal/S.F./day for silt loam Qd = flow (gal/day) for OWTS = 450 gpd L.F.1=0.8 pressure dosed trench application L.F.2=0.7 Gravelless chambers OWTS: A(sf) = 450 gpd x 0.8 x 0.7 = 420 S.F. 0.6 Gal/S.F./day Number of Quick-4 Infiltrator chambers 4'xTx12"chambers: 420 S.F = 35 Infiltrator Quick-4 chambers; Use 40 Quick-4 LP chambers 12 S.F./Chamber Used 40 Quick-4 Low Profile Infiltrator chambers in four trenches. Four 42' long by 3' wide trenches with 10 chambers per row plus end caps, as delineated on the plan. The septic tank effluent is pressure distributed to the head of each trench via distribution pipe manifolds from a high head pump discharge assembly in the dosing compartment of the 1,250 gallon tank. �lI�IIIIpllllallll�l IC=I�IIIC11111::11�I H�:1■ 1111111111�1111IlAll�� QUICK-4 INFILTRATOR END CAP 1 OWTS DEMAND DOSING CALCULATIONS CYCLE, VOLUME AND PUMP FLOAT SETTI N GS DESIGN FLOW Q 450 GPD ADJUSTMENT FACTOR 0.5 METERED OR ASSU MED Q 262.5 GPD TARGET DOSING CYCLES/DAY 10 DOSES/D DOSE VOLUME /CYCLE 26.250 GAL DISTRIBUTION LATERAL PIPES VOL 7.5 GAL DOSE VOL/ LATERAL PIPESVOL 3.5 ITIMES TRANSPORT PIPE VOLUME 10.4 GAL SU M TOTAL DOSE VOL/CYC LE 36.624 GAL DOSING COMPARTMENT STAGE VOL 9.55 GAL/IN ON/OFF FLOAT SPREAD SETTING 4.3 IN OPERATING DESIGN PUMP DISCHARGE RATE 34 GPM PUMPRUNTIME 1.1 MIN FLOW RATE PER ORIFICE 0.62 GPM GAL/ORIFICE/DOSE 0.67 GAL FLOAT SETTINGS CUMULATIVE DEPTH FROM TOP TANK HIGH LEVEL ALARM FLOAT DEPTH 19,00 IN ON FLOAT DEPTH 22.00 IN OFF FLOAT DEPTH 26.28 IN CROWN FIELD TRENCH TO DIVERT SURFACE WATER 6" VALVE BOX EXISTING GRADE EXTEND 4" RISER PIPE MIN. 3" THROUGH END CAP OR CHAMBER UNDISTURBED EARTH PRE FORMED PENETRATION SECURE WITH SCREWS THROUGH SCREENED BACKFILL PENETRATION FLANGE INTO PIPE NATIVE SOIL INFILTRATING CHAMBER UNIT ( SPRAY SHIELD) LOW PROFILE QUICK-4 OR ARC-36 810 DIFFUSER PRESSURE DISTRIBUTION PIPE CONNECTED THROUGH END CAP TO CUSTOM PERFORATED DISTRIBUTION LATERAL PIPE b" VALVE BOX SCARIFY/TILL BOTTOM SURFACE AND - PUSH ON CAP EXCAVATION SIDE WALLS 4" INSPECTION PORT RISER Quick4 Plus Low Profik (to scale t SEED AND MULCH FINISH TOPSOIL SURFACE MAINTAIN SUITABLE VEGETATIVE COVER GENERAL NOTES 1. THE OWTS A5 SHOWN ON THE PLAN AND DETAILS WERE DESIGNED BY SOPRIS ENGINEERING. 2. THE PROP05ED LOT CONDITION5 WERE PREPARED BY SOPRIS ENGINEERING AND OWNERS. 3. THE EXISITNG LOT CONDITIONS PER COUNTY GIS DATA BASE, AERIAL MAPPING, LIDAR TOPOGRAPHY AND SURVEY INFORMATION BY HIGH COUNTRY. 2002 MARTIN EXEMPTION PLAT. 4. PRIMARY OWNER NAME & ADDRESS: MARTIN RANCH II LLC, 13612 59 ROAD, COLLBRAN CO 81624. S. Applicant: JORDAN KOBIELU5Z, PO BOX 654, CARBONDALE,CO 6. LEGAL SUMMARY: LOT 2. AKA PARCEL 1 MARTIN EXEMPTION. 7. SITE ADDRESS: 36OZ COUNTY RD 108, CARBONDALE, CO 81623 S. PARCEL NUMBER: 239536400152 9. GARFIELD COUNTY PERMIT#: SEPT-8164 ISSUED 07/10/2023 CUSTUME PERFORATED PRESSURE PIPE WITH ORIFICES AT 12 O'CLOCK. SECURE PIPE WITH PUSH IN STAPLES NATIVE SILT LOAM SOIL N CITE. THE CHAMBER TRENCH MUST BE LEVEL. INSTALL CHAMBERS WITH INLET AND END CAPS OVER SAND LAYER FOR USE AS SPRAY SHEILDS. INSTALL INDIVIDUAL DISTRIBUTION LATERALS TO THE HEAD OF EACH CHAMBER TRENCH FROM A MANIFOLD CONNECTING EACH CHAMBER ROW. CUSTOM PERFORATED PIPE TO BE LAID ON TOP OF THE ASORPTIVE SURFACE WITH ORIFICES ORIENTED UPWARD EXCEPT THE FIRST AND LAST ORIFICESTO BE ORIENTED DOWNWARD. INSTALLA 4" VERTICAL INSPECTION PORT RISER FROM THE MOLDED END CAP CUT OUT ON THE LAST CHAMBER IN EACH ROW. INSTALL A BALL VALVE AT THE END OF THE DISTRIBUTION LINE ACCESSIBLE FROM THE INSPECTION PORTTO ALLOW FLUSHING OF THE LINE. THE VALVE IS CLOSED FOR NORMAL OPERATION. PRESSURE DOSED CHAMBER TRENCH DETAIL W Q m z 0 W ~Q 29377 �e 09, 2023 ; 'moo" AL.Y�G� O:E U LU W V) r Ln LU z ❑ W z 00 :E w=IN-N- U LU wpa� p� 0 N w [n 0 � J ❑ LU LU CO ❑ cn ❑ w U tz l V 0 m❑ E C C CM W 2 U LU L z ❑ U Ln J DESIGNED BY PER 05-24-23 DRAWN BY WJB 04-20-23 CHECKED BY YTN 06-14-23 DATE: 10-06-23 JOB NO, 33027.01 SHEET C-3