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HomeMy WebLinkAboutOWTS Design Report 11.01.2017ALL cpti� November 1, 2017 Whit Whitaker Wrw2( hotmail.com 33 Four Wheel Drive Rd Carbondale, CO 81623 970309.5259 Onsite Wastewater Treatment System Design 3 -Bedroom Residence Lot 4, Ranch at Coulter Creek Garfield County, Colorado Whit, Project No. C1330 ALL SERVICE septic, LLC completed an onsite wastewater treatment system (OWTS) design for the subject residence. The 4.407 -acre property is located outside of Glenwood Springs, in an area where OWTSs and are necessary. Legal Description: Section: 6 Township: 7 Range: 87 Subdivision: RANCH AT COULTER CREEK PUD Lot: 4 AS PER FIRST AMENDED FINAL PLAT RECEPTION NUMBER 889891 Parcel ID: 2391-063-01-004 SITE CONDITIONS The property is currently undeveloped. A 3 -bedroom, single family -residence is proposed. The residence will be served potable water by a community water system. The water line will enter the property near the southwestern property boundary. This water line will not come within 25 -feet of any OWTS component. The proposed STA location has approximately a five percent slope to the northeast. The proposed STA location is covered with native grasses and sparse sage brush. Looking toward the building site from proposed driveway Page 2 SUBSURFACE The subsurface was investigated on March 10, 2017 by LKP Engineering, Inc. Their report dated March 15, 2017 and revised August 1, 2017, outlines the soil and foundation investigation. The report is documented under Project No. 17-3155. Gradations and description of the soils in Test Pits #1 and #2 are consistent with Soil Type 2 classification. We also visually inspected the test pits on October 30, 2017. Test Pit #1 near building site Backfill from Test Pit #1 Looking toward Test Pit #2 Test Pit #2 backfill from Test Pit #2 Page 3 STA sizing is based on Soil Type 2 with weak structure grade. A long term acceptance rate (LTAR) of 0.6 gallons per square foot will be used to design the OWTS, in accordance with Table 10-1 Soil Type 1 presented in the Garfield County On -Site Wastewater Treatment System Regulations, adopted April 14, 2014. DESIGN SPECIFICATIONS Design Calculations: Average Design Flow = 75 GPD x 2 people/bedroom x 3 Bedrooms = 450 GPD LTAR = 0.6 GPD/SF 450 GPD / 0.6 GPD/SF x 1.0 (gravity trenches) x 0.7 (chambers) = 525 SF The OWTS design is based on 3 -bedrooms. An average daily wastewater flow of 450 GPD will be used. A 4 -inch diameter SDR -35 sewer pipe with a double sweep clean out must be installed with a minimum 2% grade from the house to the septic tank. The system installation will include a 1000 -gallon, two-compartment concrete septic tank with an effluent filter installed on the outlet tee of the septic tank. The septic tank manhole lids must be brought to grade with risers for access. Effluent will flow to a distribution box, which must also be accessible from grade. Flow Equalizers, or similar product, must be installed on each outlet line from the distribution box to assure flow is being split as equally as possible. The STA will consist of four gravelless chamber trenches, each with 11 `Quick 4' Infiltrator® chambers for a total of 528 square feet of infiltrative area. The infiltrative area must be installed below the dark brown topsoil horizon. There must be at least 6 -feet of undisturbed soil between each trench. Inspection ports must be installed at both the beginning and end of each trench. Ports may be cut to grade and covered with sprinkler boxes for access. The component manufacturers are typical of applications used by contractors and engineers in this area. Alternatives may be considered or recommended by contacting our office. Construction must be according to Garfield County On -Site Wastewater Treatment System Regulations, the OWTS Permit provided by Garfield County Building Department, and this design. REVEGETATION REQUIREMENTS An adequate layer of good quality topsoil capable of supporting revegetation shall be placed over the entire disturbed area of the OWTS installation. A mixture of native grass seed that has good soil stabilizing characteristics (but without taproots), provides a maximum transpiration rate, and competes well with successional species. No trees or shrubs, or any vegetation requiring regular irritation shall be placed over the STA. Until vegetation is reestablished, erosion and sediment control measures shall be implemented and maintained on site. The owner of the OWTS shall be responsible for maintaining proper vegetation cover. OPERATION INFORMATION AND MAINTENANCE The property owner shall be responsible for the operation and maintenance of each OWTS servicing the property. The property owner is responsible for maintaining service contracts for manufactured units, alternating STAs, and any other components needing maintenance. Geo -fabrics or plastics should not be used over the STA. No heavy equipment, machinery, or materials should be placed on backfilled STAs. Livestock should not graze on the STA. Plumbing fixtures should be checked to ensure that no additional water is being discharged to OWTS. For example, a running toilet or leaky faucet can discharge hundreds of gallons of water a day and harm a STA. Page 4 If an effluent filter or screen has been installed in the OWTS, we recommend this filter or screen be cleaned annually, or as needed. If the OWTS consists of a pressurized pump system, we recommend the laterals be flushed annually, or as needed. The homeowner should pump the septic tank every two years, or as needed gauged by measurement of solids in the tank. Garbage disposal use should be minimized, and non -biodegradable materials should not be placed into the OWTS. Grease should not be placed in household drains. Loading from a water softener should not be discharged into the OWTS. No hazardous wastes should be directed into the OWTS. Mechanical room drains should not discharge into the OWTS. The OWTS is engineered for domestic waste only. ADDITIONAL CONSTRUCTION NOTES If design includes a pump, weep holes must be installed to allow pump lines to drain to minimize risk of freezing. The pump shall have an audible and visual alarm notification in the event of excessively high water conditions and shall be connected to a control breaker separate from the high water alarm breaker and from any other control system circuits. The pump system shall have a switch so the pump can be manually operated. Excavation equipment must not drive in excavation of the STA due to the potential to compact soil. Extensions should be placed on all septic tank components to allow access to them from existing grade. Backfill over the STA must be uniform and granular with no material greater than minus 3 -inch. INSTALLATION OBSERVATIONS ALL SERVICE septic, LLC must view the OWTS during construction. The OWTS observation should be performed before backfill, after placement of OWTS components. Septic tanks, distribution devices, pumps, dosing siphons, and other plumbing, as applicable, must also be observed. ALL SERVICE septic, LLC should be notified 48 hours in advance to observe the installation. LIMITS: The design is based on information submitted. If soil conditions encountered are different from conditions described in report, ALL SERVICE septic, LLC should be notified. All OWTS construction must be according to the county regulations. Requirements not specified in this report must follow applicable county regulations. The contractor should have documented and demonstrated knowledge of the requirements and regulations of the county in which they are working. Licensing of Systems Contractors may be required by county regulation. Please call with questions. Sincerely, ALL SERVICE septic, LLC r. Carla Ostberg, MPH, REHS Reviewed By: Item # 1000T 2CP 1000 Gallon Top Seam Two Compartment Top View Section View Digins Specs Invert 11' Long x T Wide Inlet *Meets ASTM C-1227 spec 56" below Inlet invert 56" including C-1544-06 for resilient connectors • 6000 psi concrete • Delivered complete with intemal piping • PVC, poly or concrete risers available • Option of pump or siphon installed utyl Rubber Sealant Dimensions Outlet Length Width Height 53' 111" 60" 68" list Inlet Side Outlet Side Total 687 gallons 323 gallons 1,010 gallons Net Weight Lid } Tank 2,620 lbs 1 9,380 Ibs Total 12,000 Ibs Waster war (119) 3954764 28005 P.O. Box 925 317Co. Rd. 'VALLEY • S � Fax: (7 s) BumaVistai Co81211 PRECAST, Inc. • Service Web&te: www.valleyPrecast.o m F�nall: frontdesk©valleyprecast.00m Residential Biotube® Effluent Filters Applications Standard Features & Benefits Our patented* 4 -in. (100 -mm) Biotube Effluent Filters, Biorube Jr., Biotube Insert Filters, and Biotube Base Inlet Filters are ideal for residential septic tanks and have a lifetime warranty. They prevent large solids from leaving the tank, dramatically improving wastewater quality and extending the life of residential drainfields. 4 -in. (100 -mm) Biotube Effluent Filter 4 -in. (100-rnm) Biotube Jt: Biotube cartridge avail- able separately as Insert Filter) 8 -in. (200 -mm) Base Inlet Filter (100 -ram) Insert Filter Orenco superior effluent filters resist clogging better than all other brands. Our stan- dard, fill -sized 4 -in. (100 -mm) Biotube Effluent Filter provides maximum long-term protection in a complete package, with housing. Our 4 -in. (100 -mm) Biotube Jr:, at half the size of our standard model has more filtering capacity than the full sized filters sold by other manufacturers. For tanks with existing outlet tees, the Biotube Insert Filter is ideal. And for low profile tanks, there's the Base Inlet Filter. Covered by ',nem: numbers 5,492,635 and 4,439,323 To Order Gall your nearest Orenco Systems`, Inc. distributor. For nearest distribu- tor, call Orenco at 800-348-9843 or go to www.orenco.com and click on "Distributor Locator." APS -FT -1 Rev. 3.4 © 11/10 Orenco Systems®, Inc. • Has 5-10 times more flow area than other brands, so lasts many times longer between clean- ings, increasing homeowner satisfaction • Installs in min- utes inside new or existing tanks; extendible tee handle for easy removal Optional Features & Benefits • Alarm available,to signal the need for cleaning • Flow modulating discharge orifices available to limit flow rate leaving tank, mitigat- ing surges and increasing retention time • Custom and commercial sizes available • Easy to clean by simply hosing off whenever the tank needs pumping • Removes about two-thirds of sus- pended solids, on average, extending drainfield life • Corrosion -proof construction, to ensure long life • Lifetime warranty Biotube Filtering Process Effluent from the relatively clear zone of the septic tank, between the scum and sludge layers, horizontally enters the Biotube Effluent Filter. Effluent then enters the annular space between the housing and the Biotubes, utilizing the Biotubes' entire surface for filtering. Particles larger than the Biotubes mesh are prevented from leaving the tank. CO Orenco Systems Incorporated Changing the My the World Does Wkstewatrr' www,oronco,com Nomenclatures 4 -in. Biotube Fitter (standard) FT _ 04 E_ Blank = no options M = flow modulation plate installed A = float bracket attached Cartridge height: 28" and 36" are standard Housing height: 36" and 44" are standard Filter diameter (inches) W = fits Type 3034 outlet pipe S = fits Schedule 40 outlet pipe Blank = 1/8" filtration P = 1/16" filtration Biotube effluent filter series 8 -in. Biotube Filter (base inlet model) FT❑0822-14B Options: A = float bracket FS a 2" outlet orifice FSO = 2" outlet orifice and overflow plate' Base inlet model Cartridge height:'14" standard Housing height: 22" standard Filter diameter (inches) 08 = 8" Blank = 1/8" filtration P = 1/16" filtration Biotube effluent filter series `Also available with coupling and sleeve as a "kit": FT-OVERFLOWKIT 4 -in. Biotube Jr. (includes cartridge and housing) FTJ _1104 18 Options: Blank = no options M = flow modulation plate installed A = float bracket attached Cartridge height (inches) Filte diameter (inches) W = fi s Type 3034 outlet tee S = fi s Schedule 40 outlet tee Blank = 1:8" filtration P = 1/16" filtration Junior series Biotube effluent filter series 4 -in. Biotube Fitter Insert (cartridge only) FT ❑0418- —F:customized customized options (e.g., NC indicates North Carolina regions) W = fits Type 3034 outlet tee S = fits Schedule 40 outlet tee Cartridge height (inches) Filte diameter (inches) Blank = 1/8" filtration P = 1/16" filtration Insert Biotube effluent filter series 4 -in. Biotube Effluent Filter Extendible PVC handle 4 -in. Biotube Jr. • Stainless steel set screws —Top seal plate---_ Air vents Biotube® filter cartridge Solid base Filter housing m 11 J— Riser a wall r Tank wall Distributed By: Item # SH Riser, BH Riser Risers Small Hole Riser (18" Clear Access) 6" - 68 Ibs 126- 135 Ibs 18"-200Ibs 24" - 260 Ibs Big Hole Riser (20" Clear Access) 6" - 78 Ibs 12" -155 Ibs 18" - 225 Ibs 24" - 300 Ibs NOTE: Lids are not Included with risers. Can be purchased separately. 22" 6" n 25" • 6000 PSI Concrete/Fiber • Reinforced with 6" x 6" welded wire • Made to fit Valley Precast tanks • Shlplap joints allow tank-riser-Ikt lock • Allows for easy baddill " " 24" 24" To VALLEY PRECAST, Water & Wastewater • Systems • Products Inc. • Service (719) 395478429005 Co. Rd. 317 P.O. Boit 925 VistaFax (719) 395-3727' 81211 Website: www. valleyprecastcom Email: frontdesievalleyixecest.com Item # DBox 8C Concrete Distribution Box (1 inlet, 7 outlets) & Riser Top View 28" End View Riser Section ock Down Baffle Section View 28" 11Y,2w Lid View • 6000 PSI Concrete • 7 Outlet equal flow • Slide -in Baffle • 4" Pipe penetration ports a 28" - - - 15" - • Connectors cast into the box • 12" Riser available 12" 4 .a 12" Side View End View Weight: D -Box with Baffle - 200 lbs D -Box Lid - 75 lbs D -Box Riser -140 lbs Wastewater P.Q. Bax9 Water (719) 395 784 28005 Co. 25lid. 317 VALLEY •• Systems (7 � Buena Vlsta, CO 81211 •• Products Fax: 19 395-372T ❑ PRECAST, Inc. • Service Websrb: www.valleyprec stcom Email: frontdeekLvatleyprecast.com THIS WEIR SHAPE IS SELF LEVELING THESE RIBS PROVIDE FRICTION FIT FOR ALL 4" PIPE ID 1.73 .09 C4.4cm] L.2 cm] GEAR AND RACK PROVIDES POSITIVE ONE TIME LEVELING POLYLOK EQUALIZER PART NO. - 3049 MATERIAL - FILLED POLYPROPYLENE INFILTRATOR' water technologies i/iii +ft4 PCUS ti7WMBFR`APP,,* The Quick4® Plus Standard Chamber Quick4 Plus— Series The Quick4 Plus Standard Chamber offers maximum strength through its two center structural columns. This chamber can be installed in a 36 -inch -wide trench. Like the original line of Quick4 chambers, it offers advanced contouring capability with its Contour Swivel ConnectionTM which permits turns up to 15 -degrees, right or left. It is also available in four -foot lengths to provide optimal installation flexibility. The Quick4 Plus All -in -One 12 Endcap, and the Quick4 Periscope are available with this chamber, providing increased flexibility in system configurations. Maximum Strength Quick4 Plus Standard Chamber Specifications Size 34"W x 53"L x 12"H (864 mm x 1346 mm x 305 mm) Effective Length 48" (1219 mm) Louver Height 8" (203 mm) Storage Capacity 47 gal (178 L) Invert Height 0.6" (15 mm), 5.3" (135 mm), 8.0" (203 mm), 12.7" (323 mm) APPROVED in Quick4 Plus Standard Chamber Benefits: • Two center structural columns offer increased stability and superior strength • Advanced contouring connections • Latching mechanism allows for quick installation • Four -foot chamber lengths are easy to handle and install • Supports wheel loads of 16,000 lbs/axle with 12" of cover Quick4 Plus All -in -One 12 Endcap Benefits: • May be used at the end of chamber row for an inlet/outlet or can be installed mid -trench • Mid -trench connection feature allows construction of chamber rows with center feed, as an alternative to inletting at the ends of chamber rows • Center -feed connection allows for easy installation of serial distribution systems • Pipe connection options include sides, ends or top Quick4 Plus All -in -One Periscope Benefits: • Allows for raised invert installations • 180° directional inletting • 12" raised invert is ideal for serial applications Certified by the International Association of Plumbing and Mechanical (lir Officials (IAPMO) Quick4 Plus- Series Quick4 Plus Standard Chamber rlck4wPi`S 34" Quick4 Plus All -in -One 12 Endcap r :::. r jj • :Ak a, 5t I�L , 'rit, �"� I f'4 �� •iiia f k! r '' F2 % # r A ria�f.. F4 a ,rIL a as asN 2 �IW. L" FZ AL r rkI rAk, i ka 48" EFFECTIVE LENGTH PRESSURIZED PIPE DRILL POINTS LOCATIONS (2 PLACES) 33" FRONT VIEW Quick4 Plus All -in -One Periscope 13' QUICK4 PLUS ALL -IN -ONE PERISCOPE (360° SWIVEL) INFILTRATOR° water technologies U.S. Patents: 4,759,661; 5,017,041; 5,156,488; 5,336,017; 5,401,116; 5.401,459; 5,511,903; 5,716,163; 5,588,778; 5,839,644 Canadian Patents: 1,329,959; 2,004,564 Other patents pending. Infiltrator, Equalizer, Ouick4, and SideWinder are registered trademarks of Infiltrator Water Technologies. Infiltrator is a registered trademark in France. Infiltrator Water Technologies is a registered trademark in Mexico. Contour, MicroLeaching, PolyTuff, ChamberSpacer, MultiPort, PosiLock, QuiokCut, OuickPlay, SnapLock and StraightLock are trademarks of Infiltrator Water Technologies. PolyLok is a trademark of PolyLok, Inc. TUF-TITE is a registered trademark of TUF-TRE, INC. Ultra -Rib is a trademark of IPEX Inc. St 2013 Infiltrator Water Technologies, LLC. All rights reserved. Printed in U.S.A. 5" " 1 ltt_itt7 " INVERT 9" 4 Business Park Road P.O. Box 768 Old Saybrook, CT 06475 860-577-7000 • Fax 860-577-7001 1-800-221-4436 www.infiltratorwater.com SIDE VIEW INFILTRATOR WATER TECHNOLOGIES STANDARD LIMITED WARRANTY (a) The structural integrity of each chamber, endcap and other accessory manufactured by Infiltrator ("Units"), when installed and operated in a leachfield of an onsite septic system in accordance with Infiltrator's instructions, is warranted to the original purchaser ("Holder") against defective materials and workmanship for one year from the date that the septic permit is issued for the septic system containing the Units; provided, however, that if a septic permit is not required by applicable law, the warranty period will begin upon the date that installation of the septic system commences. To exercise its warranty rights, Holder must notify infiltrator in writing at its Corporate Headquarters in Old Saybrook, Connecticut within fifteen (15) days of the alleged defect. Infiltrator will supply replacement Units for Units determined by Infiltrator to be covered by this Limited Warranty. Infiltrator's liability specifically excludes the cost of removal and/or installation of the Units. (b) THE LIMITED WARRANTY AND REMEDIES IN SUBPARAGRAPH (a) ARE EXCLUSIVE. THERE ARE NO OTHER WARRANTIES WITH RESPECT TO THE UNITS, INCLUDING NO IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE (c) This Limited Warranty shall be void if any part of the chamber system is manufactured by anyone other than Infiltrator. The Limited Warranty does not extend to incidental, consequential, special or indirect damages. Infiltrator shall not be liable for penalties or liquidated damages, including loss of production and profits, labor and materials, overhead costs, or other losses or expenses incurred by the Holder or any third party. Specifically excluded from Limited Warranty coverage are damage to the Units due to ordinary wear and tear, alteration, accident, misuse, abuse or neglect of the Units; the Units being subjected to vehicle traffic or other conditions which are not pemritted by the installation instructions; failure to maintain the minimum ground covers set forth in the installation instructions; the placement of improper materials into the system containing the Units; failure of the Units or the septic system due to improper siting or improper sizing, excessive water usage, improper grease disposal, or improper operation; or any other event not caused by Infiltrator. This Limited Warranty shall be void if the Holder fails to comply with all of the terms set forth in this Limited Warranty. Further, in no event shall Infiltrator be responsible for any loss or damage to the Holder, the Units, or any third party resulting from installation or shipment, or from any product liability claims of Holder or any third party. For this Limited Warranty to apply, the Units must be installed in accordance with all site conditions required by state and local codes; all other applicable laws; and Infiltrator's installation instructions. (d) No representative of Infiltrator has the authority to change or extend this Limited Warranty. No warranty applies to any party other than the original Holder. The above represents the Standard Limited Warranty offered by Infiltrator. A limited number of states and counties have different warranty requirements. Any purchaser of Units should contact Infiltrator's Corporate Headquarters in Old Saybrook, Connecticut, prior to such purchase, to obtain a copy of the applicable warranty, and should carefully read that warranty prior to the purchase of Units. PLUS05 0713 Contact Infiltrator Water Technologies' Technical Services Department for assistance at 1-800-221-4436 1 DESIGN 3 -BEDROOM RESIDENCE (75 GAL/PERSON/DAY x 2 PERSONS/BEDROOM x 3 BEDROOMS) WASTEWATER FLOW = 450 GALLONS TANK: USE 1000 -GALLON, TWO-COMPARTMENT SEPTIC TANK TRACT A SOIL TREATMENT AREA (STA): LONG TERM ACCEPTANCE RATE (LTAR) = 0.6 GAU SQ FT CALCULATED STA = Q/LTAR = 450 / 0.6 = 750 SF GRAVITY, TRENCHES = 750 SF X 1.0 = 750 SF CHAMBERS = 750 SF X 0.7 = 525 SF / 12 SF / CHAMBER = 44 CHAMBERS FOUR GRAVELLESS CHAMBER TRENCHES 11 'QUICK 4' CHAMBERS IN EACH TRENCH TOTAL 44 'QUICK 4' CHAMBERS 0' 30' 60' Scale: 1" = 60'-0" ALL SERVICE 33 Four Wheel Drive Road Carbondale, Colorado 81623 Phone 970.309.5259 carla@allserviceseptic.com LOT 5 `a5 REBAR & CAP L.S. 437935 SET (TYP ) N'90°00'00" E LOT 4 191,960 S.F.s 4.407 AC.. S REBAR&CA L.S. 428643 (TYP.) ( fOM EL -7470.95' 461.13' 45 REBAR &CAP L.S. 928643 (TYP.) TRACT E 8 86°33'15" E l Tib TP1 MIN. 5' 3 -BEDROOM RESIDENCE f -L)M,Ts OF DISTURWNCE TRACT B s0WAi[RSERVICE BLUET-POST -TIRE \ 1 _ AYD. -ELEC. TRANS. 45 REBAR & CAP L.S. 628643 (TYP-) Rice Residence Lot 4 Ranch at Coulter Creek Garfield County, Colorado Project Number: C1330 9b 0 SITE PLAN ,• .. 64-0• DRAWINGS MUST BE USED IN CONJUNCTION WITH DESIGN LETTER DATED 11/01/17 Date: 11/01/17 Designed By: CBO Reviewed By: RHP Drawn By: ANM W1.0 Sheet 1 of 3 D -BOX, ACCESSIBLE AT GRADE NEW 4" DIA SDR -35 SEWER PIPE (MIN 1% FALL TO D -BOX) i 1000 -GALLON, TWO-COMPARTMENT, CONCRETE SEPTIC TANK WITH EFFLUENT SCREEN ON OUTLET TEE NEW 4" DIA SDR -35 SEWER PIPE WITH DOUBLE -SWEEP CLEANOUT (MIN 2% FALL TO TANK) 3 -BEDROOM RESIDENCE 4" DIA SDR -35 SEWER PIPE TO EACH TRENCH (MIN 1% FALL TO TRENCH) 0 PROPOSED OWTS PLAN 20._0' 'QUICK -4' CHAMBER TRENCHES. 4 ROWS OF 11 CHAMBERS = 44 CHAMBERS = 528 SF INSPECTION PORT AT BEGINNING AND END OF EACH TRENCH ALL smia 33 Four Wheel Drive Road Carbondale, Colorado 81623 Phone 970.309.5259 carla@allserviceseptic.com Rice Residence Lot 4 Ranch at Coulter Creek Garfield County, Colorado Project Number: C1330 Date: 11/01/17 Designed By: CBO Reviewed By: RHP Drawn By: ANM N 0' 10' 20' Scale: 1" = 20'-0" W2.0 Sheet 2of3 INFILTRATOR END PLATE GRAVELLESS 'QUICK -4' CHAMBER (4' x 3') 44' 11 CHAMBERS PER TRENCH 6' min 4" DIA SDR -25 INSPECTION PORT AT BEGINNING AND END OF EACH TRENCH SLIP-ON PVC CAP DO NOT GLUE INSULATED COPPER TRACER WIREFINISHED GRADE 4" DIA SDR -35 SEWER LINE Q STA PLAN TO TANK CLEANOUT DE~TiA oT TO SCALE NOT tC SCALE ALL s�arisi . , 33 Four Wheel Drive Road Carbondale, Colorado 81623 Phone 970.309.5259 carla@allserviceseptic.com 4" DIA SDR -35 SEWER LINE TO EACH TRENCH (MIN. 1% SLOPE TO TRENCH) 4" DIA SDR -35 EFFLUENT PIPE FROM SEPTIC TANK DISTRIBUTION BOX WITH ACCESS AT GRADE PIPES PLACED IN TOP PORT OF CHAMBER END PLATES LINE TO FOURTH TRENCH BOX AND COVER BROUGHT TO GRADE CONCRETE LID FINSHED GRADE 0000L, OUTLETS DISTRIBUTION BOX D—BOX DETIAL BAFFLE OR ANGLED PIPE TO BE USED AT INLET NO7 TO SCALE Rice Residence Lot 4 Ranch at Coulter Creek Garfield County, Colorado Project Number: C1330 1 4' max ` UNDISTURBED 1_ SOIL 6' min 4" DIA SDR -35 INSPECTION PORT LIMIT OF EXCAVATION SCARIFY SURFACE STA SECTION 2' min J GRAVELLESS 'QUICK -4' CHAMBER (4' x 3') NOT TO SCALE COMPACT SOIL BASE TO SUPPORT BOX USE HOLE SAW TO CUT THRU TOP OF END PLATE SMALL VALVE COVER BOX OR IRRIGATION VALVE BOX AT GRADE ATTACH CAP OR THREADED CLEANOUT ASSEMBLY 4" PVC PIPE CUT TO FIT INSPECTION PORT DETAIL NOT To scA1.E Date: 11/01/17 Designed By: CBO Reviewed By: RHP Drawn By: ANM W3.0 Sheet 3of3