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HomeMy WebLinkAboutEngineer's Tank Replacement Packet 09.04.2020September 4, 2020 33 FOUR WHEEL DRIVE ROAD CARBONDALE, CO 81 623 970.309.5259 CARLA.OSTBERG@GMAI L. COM Uriel Payan pavanbuilders anhotmail.com Onsite Wastewater Treatment System Design — Septic Tank Replacement 3 -Bedroom Residence 332 Meadow Lane Garfield County, Colorado Uriel, Project No. C1544 CBO Inc. has completed a septic tank replacement design for the subject residence. The 1.039 -acre property is located outside of Glenwood Springs, in an area where OWTSs are necessary. Legal Description: Section: 35 Township: 6 Range: 89 Subdivision: WESTBANK RANCH SUB. #3 Parcel ID: 2185-354-03-023 SITE CONDITIONS A 3 -bedroom, single-family residence presently exists and is being served by an existing OWTS. The existing OWTS consists of a 1250 -gallon, two-compartment Copeland concrete septic tank followed by a deep gravel (3 -foot) soil treatment area (STA) with a configuration of either 12' x 41' or 18' x 27'. Garfield County Individual Sewage Disposal Permit 1526 documents this system. The permit received final approval on November 10, 1986. The system was sized to accommodate 3 bedrooms. A remodel is proposed to the existing residence and while no bedrooms will be added, the residence will extend 20 -feet to the north which will encroach on the existing septic tank location. Additionally, a shop with a bathroom (toilet and sink) is proposed in the northeast corner of the property. The use of this show is auxiliary to the main house and will not contribute to increased wastewater flow. The residence is currently served and will continue to be served by a community water system. The existing water line to the residence enters the property from the south. The water line to the proposed shop will not come within 25 -feet of the new septic tank or within 10 -feet of any sewer line. The existing soil treatment area (STA) will be uncovered at the entry point and jetted. There should be no traffic or staging of material over the STA site to avoid compaction of soils. DESIGN SPECIFICATIONS The existing septic tank will be pumped and the sides and top collapsed and the void filled with onsite soils or the tank may be removed. For the purposes of this OWTS design, Benchmark Elevation has been established as 100' (top of slab of proposed shop). Elevation of existing STA is 96'. CBO Inc. should be notified of any discrepancies or problems with grade elevations of proposed components during installation of the OWTS. Page 2 OWTS Component Minimum Elevation Primary Tank Inlet Invert Approx. horizontal distance 66' - 72' / min. 2% fall to tank / min. 18" below slab to start sewer line and min. 18" fall = min. 36" fall / Septic tank should be installed approx. 3.5' below grade Infiltrative Surface Approx. horizontal distance 25' 25' / min. 1% fall to STA / min. 4.375" fall to tie into existing STA The existing sewer line should be explored for condition and proper slope to septic tank. A new, double - sweep clean out must be added to the sewer line between the residence and the new septic tank. The sewer line must be extended to the new septic tank and maintain a minimum 2% grade. A new, 4 -inch diameter, SDR -35 sewer line must be installed from the shop to the new septic tank. This sewer line must also maintain a minimum 2% grade. A new 1000 -gallon, two-compartment Infiltrator® septic tank must be installed with Orenco® Biotube effluent filter on the outlet tee. A new sewer line must be installed from the new septic tank to the existing STA. The entry point of the STA has been marked. The elevation of the existing STA is 4 -feet below grade. We used a camera to locate the STA and determine elevation. Through the course of the camera work, we noted a significant amount of standing water and sludge in the sewer line. We recommend that once exposed, the STA be jetted. COMPONENT SPECIFICATIONS The component manufacturers are typical of applications used by contractors and engineers in this area. CBO Inc. must approve alternative components prior to installation of the OWTS. Requests must be submitted, in writing, to our office for approval prior to installation. Component technical data sheets are available upon request. COMPONENT MANUFACTURER MODEL NO. COMMENTS Septic Tank Infiltrator® Item # IM-1060-2CP 2 -compartment poly septic tank Effluent Filter Orenco® Full size filter 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. INSTALLATION CONTRACTOR CBO Inc. expects that the installer be experienced and qualified to perform the scope of work outlined in this design. The installer must review this design thoroughly and coordinate with our office in advance of installation. Any additional conditions in this design or county permit must be completed and documented prior to final approval of the OWTS installation. Communication between the installer and this office is expected throughout the installation. Page 3 INSTALLATION OBSERVATIONS CBO Inc. 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. CBO Inc. should be notified 48 hours in advance to observe the installation. In an effort to improve the accuracy of the record drawing, we request that the installer provide a sketch of the installation, including path of the sewer lines, water line installation (if applicable), septic tank location, STA location, and measurements from building corners or another fixed objects on the property. This sketch is most easily provided on Sheet W2.0 of the OWTS Design Packet. Photographs of the installation and final cover are also requested to supplement our installation documentation. 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 irrigation 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 the backfilled STA. Machines with tracks (not wheels) should be used during construction of the STA for better weight distribution. 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. 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. Page 4 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. LIMITS: The design is based on information submitted. If soil conditions encountered are different from conditions described in report, CBO Inc. 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, CBO Inc. cam, (Ex ov-bf-Ls Carla Ostberg, MPH, REHS C) 1JCr b mg (0Q CT o°' .o 3 n)° 0 3 -s c) co POJ anua Iae M anod ££ 1 0 0 F n 17b960 :JeqwnN }oeFoad �z> m /* 5z mO� zc H = m omc NOW G.) z2 080 :Aq peu6isaa e3uep1s01:1 g 0 7 7 O P1 m - 07i 7 7 Z J0 1. 3aa4S 7 7 7 7 7 7 7 7 7 (1) O 7 ) n 7/ > r 7 / m N / cn N u 7 7 7 7 7 7 7 / (n O N/ o SN / N / / N / / N / / N / / / / \ / / / / / / / \ / / / / / g a / 0 W O i 7 i / / N / / N '�6'7e. 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System Location 0332 Moadow Lane, Glerttaold .Springs, fThis does not constitute Ia building or use permit. Licensed Installer Self Conditional Construction approval is hereby granted for a /G2U4;2 gallon Septic Tank or Aerated treatment unit. Absorption area (or dispersal areal computed as follows: Perc rate of one inch in minutes requires a minimum of /i / sq ft of absorption area per bedroom. Therefore the no, of bedrooms - x J sq. ft. minimum requirement = a total of q ft of absorption area. May we suggest: f 2.—/K `7- / X / 3 •(p Cif. / x ' / ll Date r Ea FINAL APPROVAL OF SYSTEM: Inspector 17,1 c/4-1 1 No system shall be deemed to be in compliance with the Sewage Disposal Laws until the assembled system is approved prior to cover• ing any part. 6)K a `\ Septic Tank access for inspection and cleaning within 12" of ground surface or aerated access ports above ground surface. Proper materials and asse 1y, 2- ° p +�o t , // / e t`o Trade name of septic tank aerated tFeatme nt unit. �t'� a/ 0 kc Adequate absorption (or dispersal) area. Q J Adequate compliance with permit requirements. A2_/‹._Adequate compliance with County and State regulations/requirements, Date Other RETAIN WITH RECEIPT RECORD CONSTRUCTION SITE *CONDITIONS: 1. All installation must comply with all requirements of the Colorado State Board of Health Individual Sewage Disposal Systems Chapter 25, Article 10 C.R.S. 1973, Revised 1984. 2. This permit Is valid only for connection to structures which have fully complied with County zoning and building requirements. Connection to or use with any dwelling or structures not approved by the Building and Zoning office shall automatically be a violation of a requirement of the permit and cause for both legal action and revocation of the permit. 3. Any person who constructs, alters, or Installs an individual sewage disposal system In a manner which involves a knowing and material variation from the terms or specifications contained in the application of permit commits a Class I, Petty Offense ($500.00 fine - - 6 months in jail or both.). Applicant: Green Copy Department: Pink Copy OWNER INDIVIDUAL SEWAGE DISPOSAL SYSTEM APPLICATION AY AQDRESS4, 6 14fIl +___..� ��+1S n _ d PHONE 3 -3.5-7/ CONTRACTOR ADDRESS.„age a 94/ Cy/e4/42,0p,SAe-Aew-Cid PHONE fb.3'a'77 PERMIT REQUEST FOR: ( ) New Installation ( ) Alteration ( ) Repair Attach separate sheets or report showing entire area with respect to surrounding areas, topography of area, habitable building, location of potable water wells, soil percolation test holes, soil profiles in test holes. (See page 4.) LOCATION OF PROPOSED FACILITY: County (i j Near what City of Town qi/i-„J4e.„7,r),S;4?-,,f/y1- Lot Size f d/le., Legal Description ' a3 ,C ,v T Approval by County Official: WASTES TYPE: (X) Dwelling ( ) Transient Use ( ) Commercial or Institutional ( ) Other - Describe 'BUILDING OR SERVICE TYPE: /f/774( Number of bedrooms Non-domestic Wastes Number of persons (f/) Garbage grinder (tomatic washer (shwasher SOURCE AND TYPE OF WATER SUPPLY: ( ) well ( ) spring ( ) stream or creek Give depth of all wells within 180 feet of system: If supplied by community water, give name or supplier:.,q,-----yl0l,,e_e GROUND CONDITIONS: Depth to bedrock: %? Depth to first Ground Water Table: ��41a,P4) Percent ground slope: AZ -41' DISTANCE TO NEAREST COMMUNITY SEWER SYSTEM: ./f ,',() Was an effort made to connect to community system? TYPE OF INDIVIDUAL SEWAGE DISPOSAL SYSTEM PROPOSED: (X) Septic Tank ( ) Aeration Plant ( ) Vault ( ) Vault Privy ( ) Composting Toilet ( ) Recycling, potable use ( ) Pit Privy ( ) Incineration Toilet ( ) Recycling, other use ( ) Chemical Toilet ( ) Other - Describe: FINAL DISPOSAL BY: (V Absorption Trench, Bed or Pit ( ) Evapotranspiration ( ) Underground Dispersal ( ) Sand Filter ( ) Above Ground Dispersal ( ) Wastewater Pond ( ) Other - Describe: WILL EFFLUENT BE DISCHARGED DIRECTLY INTO WATERS OF THE STATE? Page 2 11111i ",g1i PERCOLATION TEST RESULTS: (To be completed by Registered Professional Engineer.) ' Minutes per inch in hole No. 1 Minutes per inch in hole No. 3 Minutes per inch in hole No. 2 Minutes per inch in hole No. Name, address and telephone of RPE who made soil absorption tests: Name, address and telephone of RPE responsible for design of the system: Applicant acknowledges that the completeness of the application is conditional upon such further mandatory and additional tests and reports as may be required by the local health department to be made and furnished by the applicant or by the local health department for purposes of the evaluation of the application; and the issuance of the permit is subject to such terms and conditions as deemed necessary to insure compliance with rules and regulations adopted under Article 10, Title 25, C.R.S. 1973, as amended. The undersigned hereby certifies that all statements made, information and reports submitted herewith and required to be submitted by the applicant are or will be represented to be true and correct to the best of my knowledge and belief and are designed to be relied on by the localdepartment of health in evaluating the same for purposes of issuing the permit applied for herein. I further under- stand that any falsification or misrepresentation may result in the denial of the application under- .stand revocation of any permit granted based upon said application and in legal action for per- jury as provided by law. Date PLEASE DRAW AND ACCURATE MAP TO YOUR PROPERTY 4 8 Page 3 Signed he PLOT PLAN AND DESIGN FEATURES: Include by measured distance location of wells, springs, potable water supply. lines, cisterns, buildings, property lines, subsoil drains, lake, water course, stream, dry gulch and show location of proposed system by direction and distance from dwelling or other fixed reference object,and additional submissions in support of this application such as data, plans, specifications, statements and commitments. 231-8? Ari r 1,0 4trf icrls44 W 84•01 /e7 er Page 4 Item # IM 1060-2CP 1060 Gallon Two Compartment Infiltrator® Poly Tank 622' 24' ACCESS OPENING 127" • Compliant with CSA and IAPMO Standards • PVC risers available • Secondary safety screen available with PVC riser • Maximum burial depth is 48" • Minumum burial depth is 6" • Tank is not rated for vehicular traffic loading • Exterior of manhole cover includes the following warning: "DANGER DO NOT ENTER: POISON GASES" Digging Specs Invert TANK TOP HALF TANK INTERIOR ALIGNMENT DOWEL (34) CONTINUOUS GASKET SEAM CLIP (64) TANK BOTTOM HALF Mid -Height Seam Section shatior Val* SEAM CLIP (TYPICAL) LIFTING STRAP (TYPICAL) Tank includes lids OUTLET Dimensions 12' Long x 7' Wide Inlet 47" Outlet 44" Length 127" Width 62.2" Net Capacity Height 54.7" 1094 gal Weight 320 lbs End View 54.7 EXTERIOR HEIGHT INFILTRATOR' septic tanks 1041000014* Water & Wastewater OO VALLEY •uy Systems PRECAST, Inc. • service (719) 3954764 28005 Co. Rd. 317 P.O. Box 925 Fax: (719) 395-3727 Buena Yom' CO 81211 Website: www.valleyprecastcom Email: frontdesk a�vaiieyprecastcom 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 drainfields. 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) 4 -in. (100 -mm) Base Inlet Filter 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 Features & 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. Cal Orenco Systems" I ncorporated Changing the Way the World Does Wastewater° www.orenco.com Nomenclatures 4 -in. Biotube Filter (standard) FT 04 I 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 Filte 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) fits Type 3034 outlet tee fits Schedule 40 outlet tee W= s= Blank = 1/8" filtration P = 1/16" filtration Junior series Biotube effluent filter series 4 -in. Biotube Filter Insert (cartridge only) FTi 0418 - 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) 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 Biotubefilter cartridge )000( Solid base — Riser a wall Filter housing / Distributed By: FOUND NO. 5 REBAR & 1-1/4" YELLOW PLASTIC CAP LS9184 LOT24 FOUND NO. 5 REBA12 Er 1-1/4" YELLOW PLASTIC CAP LS9184 POSSIBLE LAWN ENCROACHMENT OWNER BLUE HERON PROPERTIES LLC 0, ExrsY. PEA -GRAVEL DRIVEWAY E PARKING AREA LOT3O 4' • o6 • ti POSSIBLE GRAVEL ENCROACHMENT 5 SI TE/GRAD NO FLAN I" = 201-0" NORTH ti \f98!so ll, t�OSSI3LE GRAVEL ENCROAC1- Li: ENT ,0 P16-01 EXIST L0T22 FOUND NO. 5 12E3AR Er 1-1/4" YELLOW PLASTIC CAP LS9184 [as' -o"] EXIST <URTZ ASSOCIATES, II`l�. 5012 COUNTY RD. 154 GLENJNOOD SPRINGS, COLORADO (q-70) Q45-6305 DETAC=ED GARAGE AT FAYAN RE -SI DENG 532 MEADOW LANE WESTBANK RANCH SUBDIVISION GARS I ELD COUNTY, COLORADO DRAWN SY: J.L.G. CHECKED BY: 5.J.K. SCALE: AS SHOWN PROJECT NO.: Ici-35 DATE: CONSTRUCTION SET: I I/22/20IQ SHEET TITLE: SITE/GRADING PLAN SHEET: