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HomeMy WebLinkAboutOWTS Design Report 07.22.201733 Four Wheel Drive Rd Carbondale, CO 81623 970-309-5259 July 22, 2017 Project No. C1305 Heidi Beattie Heidi.beattie(c�gmail.com Onsite Wastewater Treatment System Design 3 -Bedroom Residence 799 Callicotte Ranch Drive Lot 22, Callicotte Ranch Garfield County, Colorado Heidi, ALL SERVICE septic, LLC completed an onsite wastewater treatment system (OWTS) design for the subject residence. The 4.108 -acre property is located outside of Carbondale, in an area where OWTSs are necessary. Legal Description: Section: 24 Township: 7 Range: 88 Subdivision: CALLICOTTE RANCH SUB -DIV Lot: 22 AMENDED #754313 Parcel ID: 2393-242-06-022 SITE CONDITIONS The property is currently undeveloped. A 3 -bedroom residence is proposed. The property will be served potable water by a community water system. No water line will come within 25 -feet of any OWTS component. There also a well on the property. The well must be at least 50 -feet from the septic tank and at least 100 -feet from the soil treatment area (STA). The proposed STA location is south of the residence and driveway. The area has an approximate 5-6 % percent slope to the southwest. There are no potential future land use changes or bedroom additions planned for the property. SUBSURFACE The subsurface was investigated by HP Kumar. Results of the investigation are documented in a report dated February 13, 2017, Project 17-7-147 (enclosed). Two profile pits and three percolation test pits were excavated. The report states "No free water or evidence of seasonal perched water was observed in the pits at the time of excavation and the soils were slightly moist to moist." A gradation was performed on Test Pit #1 at approximate 3-4 feet below grade. The results of the gradation were 33% cobbles, 34% gravel, 18% sand, 13% silt, and 2% clay. This soil was classified as Gravelley Loamy Sand with Cobbles. Technically, this sample classifies the soil as Soil Type 0, which is considered unsuitable. A percolation test was conducted and results were 15 minutes per inch (MPI), 30 MPI, and 30 MPI. Results of the percolation test are more consistent with Soil Type 2. Page 2 Both soil profile pits included 1 -foot of topsoil, underlain by reddish brown clay, underlain by light brown calcareous (caliche) material. These profiles are typical for this area. We recommend STA sizing is based on Soil Type 2. 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 2 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 new OWTS design is based on 3 -bedrooms. An average daily wastewater flow of 450 GPD will be used. The system installation will include a new 1000 -gallon, two-compartment concrete septic tank with an effluent filter installed on the outlet tee of the septic tank. Effluent will flow to a distribution box, which must 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 reddish brown clay 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 3 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 0,0t L Ea Carla Ostberg, MPH, REHS Reviewed By: Item # 1000T-2CP 1000 Gallon Top Seam Two Compartment Top View Section View Flexibi Boote\ 111" 11 • 4" 53" *Meets ASTM C-1227 spec Including C-1644-06 for resilient connectors • 6000 psi concrete • Delivered complete with internal piping • PVC, poly or concrete risers available • Option of pump or siphon installed 106" Digging Specs 11' Long x l' Wide 56' below Inlet Invert Invert Inlet Outlet 5r 53' utyl Rubber Sealant Dimensions Length Width Height 111' 60' 68' Net CaPeclty Inlet Side Outlet Side Total 687 gallons 323 gallons 1,010 gallons Lid 2,620 lbs Net Weight Tank 9,380 lbs Total 12,000 Its Water & (719) 395.6764 28006 Co. Rd 317 Wastewater P.O Baa925 VALLEY • Systems BuenaVfti�, CO 81211 • RoductSystems Fay (719) 3396 727 PRECAST, Inc. • service Website: www.valleyprecastcom Ercall: f�leyprecast com Residential Biotube® Effluent Filters Applications Our patented* 4 -in. (100 -mm) Biotube Effluent Filters, Biotube 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 drainfrelds. 4 -in. (100 -mm) Biotube Effluent Filter 4 -in. (100 -mm) Biotube Jr: (4 -in. Biotube cartridge avail- able separately as Insert Filter) 8 -in. (200 -mm) Base Inlet Filter 4 -in. (100 -mm) Insert Filter Orenco's superior effluent filters resist clogging better than all other brands. Our stan- dard, full-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 patent numbers 5,492,635 and 4,439,323 To Order Call 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. Standard eat res & Benefits • 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 Biotube's mesh are prevented from leaving the tank. Orenco Syste s' Incorporated Changing the R%ny the World Does U z reraar,rr" .aeenca.cam Nomenclatures 4 -in. Biotube Filter (standard) FT 04 Options: 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 08 22 -14 B Options: A = float bracket FS = 2" outlet orifice FSO = 2" outlet orifice and overflow plate' Base inlet model Cartridge height: 14" standard Housing height: 22" standard Fllte 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) FT J 04 18 Options: Blank = no options M = flow modulation plate installed A = float bracket attached Cartridge height (inches) Filte diameter (inches) W = fits Type 3034 outlet tee S = fits Schedule 40 outlet tee Blank = 1/8" filtration P = 1/16" filtration Junior series Biotube effluent filter series 4 -in. Biotube Filter Insert (cartridge only) FT L T-- 04 18 -L-I 1 1 For customized options (e.g., NC indicates North Carolina regions) W = fits Type 3034 outlet tee S = fits Schedule 40 outlet tee Cartridge height (inches) Filter 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 000 Filter housing Distributed By: Item # DBox 8C Concrete Distribution Box (1 inlet, 7 outlets) & Riser Top View 1 End View Riser Section 28" Side View ock Down Baffle 12" End View 1 Section View 28" 25" 5" ' d GOO d 7" 28" 7 Lid View ■ • 6000 PSI Concrete • 7 Outlet equal flow • Slide -in Baffle • 4" Pipe penetration ports • Connectors cast into the box • 12" Riser available Weight: D -Box with Baffle - 200 lbs D -Box Lid - 75 lbs D -Box Riser -140 lbs Water & �1 g) 3954764 28005 Co. Rd 317 Wastewater P.O. Box 925 VALLEY • Systems (719) 395.33727 Buena Vista' /-7 PRECAST, Inc. • Service products Webelte: www.valleWmrecastcoill: W Z W J 0 a CO Z 0 LLJ =I cc D W CL cc 0 Y LLI - CL N D U Q CDW L'jM C1LL D 0 w 1 > Q Y0 Q cc f-- -L-, Z ce Ill (0 0_ 0 Q < 0 Z 0 1- 0 E u- D p W 0 H Um- INFILTRATOR® log es uick4. The Quick4° Standard Chamber 'y# Quick4° Series The Quick4° Standard Chamber fits in a 36" wide trench and is ideal for curved or straight systems. It features the atent-pending Contour Swivel Connection- which permits turns up to 15°, right or left. The MultiPort- endcap allows multiple piping options and eliminates pipe fittings. The chamber's four -foot length provides optimal installation flexibility. Chamber Benefits: • Advanced contouring connections swivel up to 15°, right or left • Latching mechanism allows for quick installation • Four -foot chambers are easy to handle and install • The Quick4 Standard Chamber supports wheel loads of 16,000 lbs/axle with only 12" of cover • Certified by the International Association of Plumbing and Mechanical Officials (IAPMO) (A4vb MultiPort Endcap Benefits: • Tear -out seals on inlet ports provide a tight fit to the pipe • Eight molded -in inlets/outlets allow for maximum piping flexibility • Eliminates pipe fittings • Fits on either end of the Quick4 Standard Chamber APPROVED in uick4Series Because installations are faster with Quick4, chambers, you save on heavy equipment operation and labor. Quick4® Series Quick4 Standard Chamber uick4 G161MBERSYSTEMS MultiPort EndCap 48" (EFFECTIVE LENGTH) FRONT VIEW Typical Trench View SIDE VIEW NATIVE BACKFILL TOPSOIL COVER BY DESIGN 12" 12" 8" INVERT I-- 34" (36" WIDE TRENCH) SPACING PER CODE 34,, Quick4" Standard Chamber Size Specifications 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 43 gal (163 L) Invert Height 8" (203 mm) I 4 Business Park Road P.O. Box 768 Old Saybrook, CT 06475 860-577-700 • Fax 1 N F 1 LT R AT 0 R6' 1-800-221-04436 860-577-7001 water technologies www.infiltratorwater.com TOP 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 permitted 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 Umited 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 Umited 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. 3. 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; 5,839,844 Canadian Patents: 1,329,959; 2,004,564 Other patents pending. Infiltrator, Equalizer, Quick4, 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, MuISPort, PosiLock, QuickCut, QuickPlay, SnapLock and StraightLock are trademarks of Infiltrator Water Technologies. PolyLok is a trademark of PolyLok, Inc. TUF-TITE is a registered trademark of TUF-TITE, INC. Ultra -Rib is a trademark of IPEX Inc. © 2013 Infiltrator Water Technologies, LLC. All rights reserved. Printed in U.S.A. 025 0813 Contact Infiltrator Water Technologies' Technical Services Department for assistance at 1-800-221-4436 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 CONCRETE SEPTIC TANK SOIL TREATMENT AREA (STA): LONG TERM ACCEPTANCE RATE (LTAR) = 0.6 GAL/ 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 DRAWINGS MUST BE USED IN CONJUNCTION WITH DESIGN LETTER DATED 07/22/17 O SITE PLAN ,. = 80'_Or 0' 40' 80' Scale: 1" = 80'-0" ALL SERYICE 33 Four Wheel Drive Road Carbondale, Colorado 81623 Phone 970.309.5259 carla@allserviceseptic.com Beattie Residence Lot 22 Callicotte Ranch Garfield County, Colorado Project Number: C1305 Date: 07/22/17 Designed By: CBO Reviewed By: RHP Drawn By: ANM W1.0 Sheet 1 of 3 0' 10' 20' Scale: 1" = 20'-0" r 4" DIA SDR -35 SEWER PIPE WITH DOUBLE -SWEEP CLEANOUT (MIN. 2% SLOPE TO TANK) 1000 -GALLON, TWO-COMPARTMENT, CONCRETE SEPTIC TANK WITH EFFLUENT SCREEN 4" DIA SDR -35 SEWER PIPE (MIN. 1% SLOPE TO D -BOX) D -BOX WITH ACCESS AT GRADE 4" DIA SDR -35 SEWER PIPE (MIN. 1% SLOPE TO EACH TRENCH) INSPECTION PORT AT BEGINNING AND END OF EACH TRENCH 'QUICK -4' CHAMBER TRENCHES. 4 ROWS OF 11 CHAMBERS = 44 — CHAMBERS = 528 SF 3 -BEDROOM 00 RESID ►__ar, 0 0 NOTE: WATER LINE MUST BE 25' FROM ANY OWTS COMPONENT . 100 STA TO WELL O PROPOSED OWTS = 2v-0, ALL SIRV� 33 Four Wheel Drive Road Carbondale, Colorado 81623 Phone 970.309.5259 carla@allserviceseptic.com Beattie Residence Lot 22 Callicotte Ranch Garfield County, Colorado Project Number: C1305 Date: 07/22/17 Designed By: CBO Reviewed By: RHP Drawn By: ANM W2.0 Sheet 2of3 r_ INFILTRATOR END PLATE 44' GRAVELLESS 'QUICK -4' CHAMBER (4' x 3') 3' 1 11 CHAMBERS PER TRENCH 4" DIA SDR -25 INSPECTION PORT AT BEGINNING AND END OF EACH TRENCH O STA PLAN 1' 6' min NOT TO SCALE SMALL VALVE COVER BOX OR IRRIGATION VALVE BOX AT GRADE ATTACH CAP OR THREADED CLEANOUT ASSEMBLY COMPACT SOIL BASE TO SUPPORT BOX USE HOLE SAW TO CUT THRU TOP OF END PLATE 4" PVC PIPE CUT TO FIT 0 INSPECTION PORT DETAIL NOT TO SCALE ALL SERVIOE 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 OTHER TRENCH SLIP-ON PVC CAP DO NOT GLUE r 4' max L NOTE: TRENCHES MUST BE INSTALLED BELOW THE CLAY LAYER IN THE LIGHT BROWN CALICHE HORIZON 4" DIA SDR -35 INSPECTION PORT UNDISTURBED SOIL LIMIT OF EXCAVATION SCARIFY SURFACE INSULATED COPPER TRACER WIRE 4" DIA SDR -35 SEWER LINE 6' min O STA SECTION 3' min GRAVELLESS 'QUICK -4' CHAMBER (4' x 3') FINISHED GRADE IWIr TO TANK TO HOUSE O CLEANOUT DETAIL NOT TO SCALE Beattie Residence Lot 22 Callicotte Ranch Garfield County, Colorado Project Number: C1305 NOT TO SCALE 12" 52" 48" ' (EFFECTIVE LENGTH) 34" LINES TO ENTER AND EXIT IN TOP PORT OF CHAMBER END PLATE O CHAMBER DETAILS NOT TO SCALE BOX AND COVER BROUGHT TO GRADE N CONCRETE LID FINSHED GRADE 0000 OUTLETS DISTRIBUTION BOX O D—BOX DETAIL BAFFLE OR ANGLED PIPE TO BE USED AT INLET NOT TO SCALE Date: 07/22/17 Designed By: CBO Reviewed By: RHP Drawn By: ANM W3.0 Sheet 3 of 3