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Home My WebLink About287 Hunt Ranch Rd-AC-OWTS-C1-RecordDrawing-08252513 m / t 1. THE OWTS AS SHOWN ON THE PLAN AND THE DETAILS WERE DESIGNED BY SOPRIS ENGINEERING. J o00 CONDITIDNS SURVEY/PLAT .) r J p U F ]L� ` 2. THE PROPOSED LOT BYSOPRIS ENGINEERING AND INFORMATION SHOWN IS (D K� i❑ ` 4" PVC DISTRIBUTION PIPES (TYP.) BASED ON AN ISP BY 5OPRI5 ENGINEERING, 10-11-23. J 0) 3. PRIMARY OWNER NAME AND ADDRESS.,NEWTON WEST 5 RANCH LLC, 33 5UNHILL LANE, NEWTON CENTER, MA — Z CONCRETE DISTRIBUTION BOX WITH BAFFLE ss 02459 p dui INSTALLED LEVEL ON COMPACTED BASE, UJ c W ABSORPTION/TREATMENT FIELD, USE 80 LOW PROFILE QUICK-4 CHAMBERS IN 4 INSTALLED RISERS AND LID TO SURFACE . 4SITE ADDRESS: 2$7 Hunt Ranch Rd, CARBONQALE, CO 81623 TRENCHES WITH 20 CHAMBERS PER ROW FOR A TOTAL ABSORPTION AREA OF W U 960 S.F. THE SYSTEM IS PLUMBED FOR EQUAL GRAVITY DISTRIBUTION. THE 5. Legal Summary: SECTION: 20 TOWNSHIP: 7 RANGE: 87 A PARCEL OF LAND SITUATE WITHIN SECTION 20 [ 7 CHAMBERS ARE INSTALLED ON LEVEL GRADE IN EACH TRENCH. THE BOTTOM OF EACH TRENCH WAS EXCAVATED TO A MAXIMUM AVERAGE DEPTH OF 20" BEING MORE PARTICULARLY DESCRIBED PER SPECIAL WARRANTY DEED RECEPTION NO. 969596 35.11 LJ a BELOW THE EXISTING SURFACE GRADES & BACKFILLED WITH A MINIMUM 12" r,.. ACRES T OF COVER OVER TH E CHAM BERS. fi 6. Parcel Number: 2391-201-00-278 D T U) M W 7. COUNTY OWT5 PERMIT #: SEPT-8811, Issued 8-23-24 rn � = 8. CONTRACTOR: E&L Excavation, Luis Murrilo, 970-309-3057 s 80.01z 2 Q Design Calculations OWT5 The onsite wastewater treatment system (OWTS) was installed to serve the 4-bedroom single family residence. r� V ) ry LO 4" PVC EFFLUENT PIPE @ MIN. 1 %, A possible future 2-bedroom ADU in the adjacent barn/shop structure may be considered in the future. In order DATE: 08j25�25 INSTALLED CHAMBER END CAP 24.0' USE 5CHD-40 OR SDR-35 to ensure adequate OWT5 capacity for current proposed usage and potential future usage the new system is ON ALL END CHAMBERS designed with a design flow based on a total residential population of 9 persons. Therefore design flow JOB hlrD. 34042,D1 treatment capacity is calculated as follows for a minimum equivalent 6-bedroom single family residence. From the Regulation 43 usage table : DESIGNED BY PER 08/22f25 Minimum population based on 6 bedrooms = (2 persons * 3 bedrooms) + (3 bedrooms ' 1 persons)= 9 persons. o� Gallons per day per person = 75 gal/person/day, No peaking factor DRAWN BY WJ B 07 �30j25 INSTALLED 4" RISER PIPE INSPECTION PORTS, W/ PUSH ON Max. Design flow (Qd) gallons/day of people) x (avg. flow) gal/person/day. CAP MIN. 3" BELOW FINISH GRADE & COVERED WITH 6" DIA. VALVE BOX SET WITH LID 1" ABOVE FINISH GRADE - (TYP. EACH TRENCH CHAMBER END CAP) INSTALLED 4" 2-WAY CLEANOUT Design flow Qd = 9*75 = 675 gpd CHECKED BY YTN 08/25/25 INSTALLED 2,000 GALLON, 2-COMPARTMENT CONCRETE SEPTIC TANK (USE VALLEY PRECAST ITEM #IM 2000T-2CP) W/ - Septic Tank Design: _ SEALED PVC RISERS & LIDS INSTALLED AT THE FINISHED 4" FULL BODY WYE GRADE SURFACE. INSTALLED INLET5ANITARY TEE AND -- - Septic Tank Design: 2-Day detention time = 675 x 2 = 1350 gallons required. Use a 2000 gallon, two j OUTLET EFFLUENT FILTER SANITARY TEE. INSTALLED 4" 2WAY CLEANOUT i - ,V" -- _ ____ _ -- - - - - - - - - compartment concrete septic tank with an effluent filter outlet sanitary tee in the second chamber.Thetank was installed with sealed PVC risers and lids set to the finish grade surface. � 7p7a — � — aGi - -_-_ 4" 22.5° BEND Sub Surface Conditions and Testing: 4=�- '' 4 SDR-35 PVC � PP-7 � Subsurface soil investigations and USDA soil texture method tests were performed b Kumar USA and 5o ris g P Y r P SEWER PIPE @ Z%, 4"s Engineering on May 29, 2024. The soils from three profile pits, in the vicinity of the proposed STA field area 1 S 4" 45° BEND 4"ss were sampled and characterized by application of the USDA visual/tactile soil texture method analysis. The soils were tested to determine the presence of any limiting soil or hydrological conditions, appropriate hydraulic l loading rate, absorptive surface level capacity and to assess appropriate treatment level design for the in -situ P ,,� Q 4'' 2Z 5° BEND native soils. The soils below 9" of topsoil consist of dense slit loam with less than 2% scattered gravel or rock content to 7 feet below the surface grades. The soils appear to be generally consistent across the site. + — — — - INSTALLED 4" 2-WAY CLEANOUT W. 70 READ CAP IN T.R. VALVE BOX The native soils sampled from 2-3 feet below the surface are characterized as a soil type 2A soil consisting of silt loam fine has loading for E. texture with granular structure shape with massive grade. This soil an effective rate 1�'~r`, conventional soil treatment of 0.5 Gal/S.F./day for a level 1 conventional treatment system. No rocky soils or depth. Some lenses ❑ Q 1 significant change of texture was encountered at evidence of thin scattered of calcareous C deposits at variable depths was encountered in Profile pit 1 and 3. A 6 to 9 inch layer of calcareous deposits at 1 �V i variable pitched depth from 18 to 30" below surface grade was encountered in Profile pit 2 that was excavated from 3' below the the Based this the l ❑ It existing surface grades approximately other pits. on evidence proposed 0 a 1 STA was situated on the slightly higher ground. No free water was encountered in excavations observed on site. Normal Groundwater levels are expected to be below 8 feet from the existing surface grades. The soils are 0 0 ❑ suitable for the installation of an STA consisting of multiple gravelless chamber trenches- J no ` " PP-3 Additional soil evaluations were performed during construction to verify the soils in the entire field excavation. The soils in the tank, and STA trench excavations were observed and found to have consistent relatively 0 u w INSTALLED 4" WAY pipline dense silt loam soils with fine structure shape a with massive with out the of rock or CLEANOUT, INV. 24" � 4" 5CHD-40 PVC SECTION SEWER IN f granular grade presence g p g P BELOW FINISH GRADE 1 �` SERVICE PIPE FOR FUTURE USE, gravels- U 0% ♦ Soil Treatment Unit/ Absorption System Design: W a o The treatment/absorption field is designed based on utilizing the effective Long Term Acceptance Rate (LTAR) < J F- U for the native soils and the application of appropriate loading factors for a soil treatment unit system utilizing ❑ f gravity distribution to gravelless chamber trenches. The new treatment system and absorption field will consist of gravity distribution of septic tank effluent via a distribution box to individual chamber trenches with Z ❑ treatment across the native soil absorptive surface. ❑ Z 4" PVC SEWER PIPE FOR FUTURE �� USE, PVC 5CHD 40 Long Term Acceptance Rate (LTAR): 0 l PP-6 _ 70 $ i Receiving Wastewater Treatment Level 1; D 0 Q � J `INSTALLED 4" 2-WAY CLEANOUT U W. THREAD CAP IN T.R. VALVE BOX LTAR; (Table 10-1 Soil type 2A loading rate for a massive silt loam is (0.5 gal./S.F./day); ' _ Design Flow; Qd = flow (gal/day) = 675 gpd (fj Loading factors; (Table 10-2, Gravity application trenches, L.F.1 = 1.0 j PP-5 If a� (Table 10-3, Gravelless chambers, L.F.2 = 0.7) STU absorption treatment area; A = Area S.F.; CROWN FIELD TRENCH TO DIVERT SURFACE WATER 4' MIN ¢� ��74�_ � � A(sf) = Qd x L.F.1 x L.F.2 .: A(sf) = 675 gpd x 1.0 x 0.7 = 945 S.F. � � f ATION ATIN EGATLAYER BACKFILL WITH SCREENED TOPSOIL LAYER ONSITE SOILS FREE OF ROCKS IN LTAR 0.5 Gal/S.F./day 11 , EXCESS OF 3" DIAMETER OR USE 3/4" COVER EACH CHAMBER ROWamber of Quick-4 Plus Low Profile Infiltrator chambers 4'x3'x8"chambers: TO 1.5' SCREENED ROCK W/ FILTER FABRIC COVER 0 945 S.F. = 79 chambers; Installed 80 chambers 12 5-F./Chamber � -~�------------__-- 4" PVC INLET PORT o� IN END CAP 7"_12„ LEACHING Installed 80 Quick-4 Plus Low Profile Infiltrator chambers in 4 trenches 82' long by 3' wide with 20 chamber units trench two end caps as delineated on the The septic tank effluent is distributed to CHAMBER per plus plan. gravity a BACKFILL LAYER NATURAL ONSITE the head of each chamber row via individual distribution pipes from a Valley Precast concrete distribution box. l SOILS FREE OF ROCKS UNDISTURBED EARTH 6" 4 1 SCARIFYITILL BOTTOM SURFACE TO A SILTY LOAM SOIL. ! + DEPTH OF 3" NOTE: ALL CHAMBERS IN EACH TRENCH MUST BE INSTALLED ON l LEVEL GRADE OVER SCARIFIED NATIVE SOIL. l }y MAXIMUM DEPTH OF TRENCHES NOT TO EXCEED 36" BELOW PROPOSED SURFACE GRADES. INLET AND END CAPS ARE TO BE f INSTALLED ON EACH END CHAMBER ROW. IF EXCESSIVE LARGE i COBBLES OR BOULDERS ARE ENCOUNTERED IN ANY PART OF THE EXCAVATION, OVER EXCAVATE AND BACKFILL WITH SAND OR PQ E�i GRAPHIC SCALE SUITABLE SCREENED NATIVE SOILS. 20 0 1D 20 40 80 CHAMBER TRENCH CROSS SECTION DETAIL N.T.S. 28377 ur� 25. 2025 ; { IN FEET) CONNECT INDIVIDUAL 4" DISTRIBUTION PIPE ? 1 inch = 20 ft. TO HEAD OF EACH CHAMBERTRENCH (TYPICAL EACH TRENCH).1VAL INSTALL CONNECTION AS NEEDED FROM END OR SIDE INLET ;,v PORT OF EACH INFILTRATOR CHAMBER END CAP. DATE REVISION CHAMBER END CAP CHAMBER END CAP CONNECTION DETAIL N.T.S. 6" VALVE BOX EXTEND 4" RISER PIPE MIN. 3" NATIVE, YARD OR LANDSCAPED THROUGH END CAP OR CHAMBER DISTRIBUTION BOX LID SURFACE PRE FORMED PENETRATION AT GROUND SURFACE SECURE WITH SCREWS THROUGH PENETRATION FLANGE INTO PIPE ..y..\X-REFSjlmages\County GIS.png 6" VALVE BOX 07 RISER SECTION 6" MIN. EXCAVATED MATERIAL COMPACTED TO 9036 STANDARD PROCTOR PUSH ON CAP 4" INSPECTION PORT RISER BAFFLE 6" MIN. TITLE QUICK-4 IN FILTRATOR 1 1'S 4" DISTRIBUTION D CAP 4.0 GRAVITY LINE FROM SEPTIC TANK ... ...... VAEPN a o 0 4" MIN. N SUITABLE BACKFILL OR �� d f� CLASS 6 ROAD BASE INVERT IN COMPACTED SUBGRADE DRAWING NO. Missing or invalid reference C�uick4 Plus Law Profile Endca Detail 8" AGREGATE BASE COURSE � 11 � COMPACTED SUBGRADE File:.. V . �DETAILS �2-2OOOT-2CPO. Pdf TRENCH CROSS-SECTION FOR C-1 Sheet: 1 (to scale) DISTRIBUTION BOX DETAIL SDR-35,26 OR SCHD-40 PIPES CONCRETE SEPTIC TANK DETAIL COUNTY ASSESSORS MAP N.T.S. N.T.S.