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HomeMy WebLinkAboutOWTS Evaluation & Recommendations 06.25.2020CB O .I June 25, 2020 Ashlee Taylor Aflack 69@hotmail.com 33 FOUR WHEEL DRIVE ROAD CARBONDALE, CO 81 623 970.309.5259 CARLA.OSTBERG@GMAI L. COM Project No. C1532 Onsite Wastewater Treatment System Evaluation and Recommendations 6-Bedroom Residence 1600 CR 259 Garfield County, Colorado Ashlee, CBO Inc. has visited the subject property and evaluated the existing onsite wastewater treatment system (OWTS). The 5.0-acre property is located outside of Silt, in an area where OWTSs are necessary. Legal Description: Section: 34 Township: 5 Range: 92 ANTLERS ORCHARD TR Parcel ID: 2127-342-00-287 SITE CONDITIONS The existing residence is served by an OWTS, documented by Garfield County Individual Sewage Disposal System (ISDS) Permit No. 3329. The OWTS was sized to accommodate 4 bedrooms. The system consists of a 1250-gallon, two -compartment Copeland Concrete septic tank and 24 `Standard' Infiltrator® chambers in a trench configuration. The system received final approval on May 12, 2000. Altitude Septic inspected the OWTS on May 12, 2020 and noted poor condition of the septic tank and a discrepancy in the number of bedrooms existing versus the number of bedrooms the system was sized to accommodate. Upon inspection of the OWTS, we discovered a Bull Run Valve. The Bull Run Valve leads to two soil treatment areas (STAs). Down Valley Septic and Drain (Scott Moyer) ran a camera from the Bull Run Valve to the STAs. One of the STAs is documented by Garfield County's ISDS Permit 3329. This STA is located to the south of the residence. The other STA runs to the west. Down Valley Septic and Drain noted the line was clear to the southern STA. He did not reach the distribution box because of distance. The STA to the west had an accumulation of sludge in the sewer line. It is recommended that this STA be jetted. Neither STA is showing signs of failure. RECOMMENDATIONS AND DESIGN SPECIFICATIONS The property is for sale. For continued use of this OWTS, we recommend the septic tank be replaced and the existing STAs remain in use, with implementation of our recommendations. Design Calculations: Average Design Flow = 75 GPD x 2 people/bedroom x 3 Bedrooms + 225 GPD (4tn 5t1-1and 6th bedrooms) = 675 GPD 5 bedrooms = min. required 1750 gallons septic tank capacity Page 2 We recommend the installation of a new, 2000-gallon, two -compartment Valley Precast concrete septic tank with an Orenco® Biotube Effluent Filter on the outlet tee of the septic tank. Elevation of the existing sewer lines must be accommodated with the installation of the new septic tank (minimum 2% house to tan and minimum 1 % tank to Bull Run Valve). Rises must be installed on the manhole lids to bring access to grade. While the documented STA was only sized to accommodate a 4-bedroom residence, we believe this STA is in good working order. The alternate STA is of unknown size and configuration. Without documentation, we are unable to verify the size and configuration. The STA was in use and showed no sign of surface saturation or failure at the time of our inspection. Exploration with a camera resulted in the recommendation of jetting. We recommend the existing Bull Run Valve be utilized or a new Bull Run Valve installed. This valve can be rotated between the STAs, increasing the longevity of the STAs over time. We recommend rotating the valve annually (for example, every 4th of July). We recommend beginning use of the South STA. We have provided a tracking sheet for the purpose of documenting rotation and OWTS maintenance. We also recommend the area to the northwest and west of the residence NOT be subject to vehicle traffic. We also recommend vegetation be planted over both STAs. An adequate layer of good quality topsoil capable of supporting revegetation should be placed over each STA. 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 STAs. 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. 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. Page 3 ADDITIONAL CONSTRUCTION NOTES 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. Please call with questions. Sincerely, CBO Inc. eaft_ (ix Ov-bf-Ls Carla Ostberg, MPH, REHS 1600 CR 259 possible / approximate location of West STA septic tank replacement location approximate location of South STA Item # 2000T-2CP 2000 Gallon Top Seam - 2CP DESIGN NOTES • Design per performance test per ASTM C1227 • Top surface area 87.75 ft2 • f'c © 28 days; concrete = 6,000 PSI Min. Installation: • Tank to be set on 5" min. sand bed or pea gravel • Tank to be backfilled uniformly on all sides in lifts less than 24" and mechanically compacted • Excavated material may be used for backfill, provided large stones are removed • Excavation should be dewatered and tank filled with water prior to being put in service for installation with water table less than 2' below grade • Meets C1644-06 for resilient connectors • Inlet and Outlet identified above pipe • Delivered complete with internal piping • 4' Maximum bury depth ALLOWABLE BURY (Based on Water Table) WATER TABLE ALLOWABLE EARTH FILL 0'-0" 3'-0" 1'-0" 3'-0" 2'-0" 4'-0" 3'-0" 4'-0" DRY 4'-0" Digging Specs 15' Long x 8' Wide 56" below inlet TANK ID 162" 27 Clear Access � it 1LJ • 157" Invert Dimensions Net Capacity Inlet Outlet Length Width Height Inlet Side 56" 53" 162" 78" Outlet Total -toi#stitt Net Weight Lid Tank Total 68" 1559 gal 507 gal 2066 gal 5420 Ibs 15530 lbs 20950 lbs NOVALLEY ❑ PRECAST, Inc. Buena Vista, Colorado Phone: 719-395-6764 Fax: 719-395-3727 Website: www.valleyprecastcom Email: frontdesk©valleyprecastcom 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 W= s= 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 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 Tank wall / Distributed By: Item # BRVBULK Bull TM Run Valve & Key The Bull Run Valve is available in 4" SCH 40 PVC and is suitable wherever septic disposal systems are used — in commerical, industrial, and residential application. OPERATING THE VALVE The direction control handle should be rotated periodically to direct effluent to one or the other of two septic fields. After removing the screw cap at the top of the riser tube, the valve handle can be turned with the valve key furnished. ADAPTABLE TO VARIOUS PIPES Each valve port connection is a 4" schedule 40 female slip connection. The riser tube connection is a 4" schedule 40 male slip connection. Use ample PVC, ABS, or multi —purpose glue to form a water —tight joint. Any of the following can be used to connect the valve: 1) Schedule 40 PVC or ABS pipe 2) Adapter bushing (Dwv Hub to sewer (Sc drain spiget) 3) ASTM 2729 (Schedule 30) 4) Bell End of ASTM 2729 (Schedule 30) pipe RISER CAP ADAPTER RISER TUBE 4" OUT PORT o r t t *wits*. WATER -TIGHT }� ACCESS CAP Mb .gitai lawaz:L.._ 4) VALVE DIRECTION HANDLE 4" OUT PORT 4" IN PORT ,SO' Water & (719) 395.6764 28005 Rd. 317 Wastewater P.O. Banc 925 liFITALLEY • • Pr duc sFax: (719) 395-3727 & vim' CO 81211 PRECAST, Inc. • Service Website: www.valleyprecast com Email: frontdesk©valleyprecast com Onsite Wastewater Treatment System (OWTS) Alternating System Tracking Sheet Date Rotated STA in Use South / West Septic Tank Pumped OFFICE 970-471-0913 P.O. Box 1534 Eagle, CO 81631 altitudeseptic@gmail.com www.altitudeseptic.com 5/12/2020 1600 County Rd 259 Rifle, CO 81650 To Whom It May Concern, Altitude Septic was hired to perform a septic inspection and pump the septic tank at the above address. The system is permitted with Garfield County Community Development and records are available. According to the permit, the septic tank is a two compartment, 1250 gallon, Copeland Concrete septic tank. The drawings that the county has are a little different than what was actually installed. The biggest discrepancy that I find, is that the drawings indicate the septic tank is 80 feet from the house, but in fact, the tank is only six feet from the house. The original permit states that this system is designed for 4 bedrooms. The home is listed as a six -bedroom home. If the home is truly a six -bedroom home, the septic system is under -sized. The tank has its inlet tee and outlet filter in place and has one foot of risers on both the inlet and outlet sides of the tank. Both the riser and the top of the tank are showing deterioration. The tank was overfull. This is caused from the outlet line being cocked up, usually due to the outlet line settling. Also, it is important to note that the tank has a line coming into the outlet side of the septic tank that appears to be from the shop. The leach field is comprised of three laterals of infiltrators, eight infiltrators per trench. The drawing indicates the leach field lays on the west side of the house. If the drawings are correct, it would appear that the leach field area has been driven on in the past and may still be getting driven on. There are a number of concerns with this system that need to be addressed. They are as follows: 1. The outlet riser has deteriorated and must be replaced. 2. The tank is showing deterioration. 3. The outlet line is cocked up causing the tank to be overfull. 4. The line from the shop is plumbed into the outlet side of the tank instead of the inlet side of the tank. 5. The leach field appears to have been driven on, which could cause damage. 6. The system is undersized for the current number of bedrooms. Please make note that the life expectancy of a septic system is 25 years. This system was installed in 2000. If you have any questions, please give me a call. Jason Daubs 970-471-1330 Please be aware of the following disclaimer: Altitude Septic accepts no responsibility for the proper operation of this septic system. The septic system is the property of the homeowner who is responsible for the maintenance and operation of this system. This inspection does not constitute a guarantee nor is any warranty expressed or implied that the system will function properly in the future. Altitude septic can only make observations based on the condition of the septic system at the time of inspection and will make no prediction on the future functionality of any part of the septic system. GARFIELD COUNTY BUILDING AND SANITATION DEPARTMENT 109 8th Street Suite 303 Glenwood Springs, Colorado 81801 Phone (303) 945-8212 INDIVIDUAL SEWAGE DISPOSAL PERMIT '•Y PROPERTY ,, Owner's Name-C4-Rcei'/ '" len System Location Permit N° 33?9 Assessor's Parcel No. This does not constitute a building or use permit. Present Address It �C 2�`S°1 ate. gi 1� Phone_ 6016— 3O / 1GOo (o(•twil goad 0)59 Rifle Cofl6So ); Legal Description of Assessor's Parcel No. 1 SYSTEM DESIGN J2SU Required Absorption Area - See Attached Special Setback Requirements: Date 5--ro-oa Septic Tank Capacity (gallon) Other ' s Percolation Rate (minutes/inch) Number of Bedrooms (or other) q t b s i- 976, ar s1 4. 1fl 'toc< LN RUS erkl ssu, a' t€4c0 cittistgaps i B atb<0 zeiJrts ys's'ta' E-►4-cH tseies /9 YRzAJcw-Ms (a41uinbi l Inspector jt.e 424( • FINAL SYSTEM INSPECTION AND APPROVAL (as installed) Call for Inspection (24 hours notice) Before Covering Installation $• i4 System Installer t Septic Tank Capacity 1250 f • 0?775 soeozl6fit Septic Tank Manufacturer or Trade Name Cc / E c42 bb Septic Tank Access within 8" of surface Yr-� Absorption Area Absdrption Area Type and/or Manufacturer or Trade Name DiTell cibm t-i5 /J TIC " Adequate compliance with County and State regulations/requirements YES ft Other Date 1 7 `on Inspector RETAIN WITH RECEIPT RECORDS AT 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 buildingoquirements. Con- nection to or use with any dwelling or structures not approved by the Building and Zoning office shall automatically be a violation or 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 — 8 months In jail or both). t' r. $ i.t -4 White - APPLICANT Yellow - DEPARTMENT INDIVIDUAL SEWAGE DISPOSAL SYSTEM APPLICATION OWNER QC/.(J ADDRESS /608 C/t -9S ' ca Pao PHONE %%b - 6 as - P34 CONTRACTOR 5/4 nit- Q 5 /51 dot -- ADDRESS Sf4 MCA PHONE S ,nr . 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 FAJILITY: Near what City of Town //" C CO Size of Lot /O Legal Description or Address .4e7 5 OPer D "edge i‘rS ..Su 6 b; WASTES TYPE: (,,V DWELLING ( ) TRANSIENT USE ( ) COMMERCIAL OR INDUSTRIAL ( ) NON -DOMESTIC WASTES ( ) OT R - DESCRIBE BUILDING OR SERVICE TYPE: "rest a4'v7-6 ` /4 ME Number of Bedrooms. Number of Persons ( Garbage Grinder (utomatic Washer SOURCE AND TYPE OF WATER SUPPLY: (t< LL If supplied by Community Water, give name of supplier: ( VDishwasher ( ) SPRING ( ) STREAM OR CREEK DISTANCE TO NEAREST COMMUNITY SEWER SYSTEM: AO/ - Was an effort made to connect to the Community System? 27/9- A site plan is required to be submitted that indicates the following MINIMUM distances: Leach Field to Well: 100 feet Septic Tank to Well: 50 feet Leach Field to Irrigation Ditches, Stream or Water Course: 50 feet Septic System to Property Lines: 10 feet YOUR INDIVIDUAL SEWAGE DISPOSAL SYSTEM PERMIT WILL NOT BE ISSUED WITHOUT A SITE PLAN. GROUND CONDITIONS: T� Depth to first Ground Water Table -/o Percent Ground Slope 2 TYPE OF INDIVIDUAL SEWAGE DISPOSAL SYSTEM PROPOSED: SEPTIC TANK VAULT PRIVY PIT PRIVY CHEMICAL TOILET FINAL DISPOSAL BY: AERATION PLANT ( ) VAULT COMPOSTING TOILET ( ) RECYCLING, POTABLE USE INCINERATION TOILET ( ) RECYCLING, OTHER USE OTHER - DESCRIBE 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? PERCOLATION TEST RESULTS: (To be completed by Registered Professional Engineer, if the Engineer does the Percolation Test) Minutes per inch in hole No. I Minutes per inch in hole No. 2 Minutes per inch in hole NO. 3 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 purposed 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 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 local department of health in evaluating the same for purposes of issuing the permit applied for herein. I further understand that any falsification or misrepresentation may result in the denial of the application or revocation of any permit granted based upon said application and in legal action for perjury as provided by law. Signed Date �jjerb PLEASE DRAW AN ACCURATE MAP TO YOUR PROPERTY!! 27? to 1; 27e- MrJA '?/ 3-- 1 kelei o N coe v r 3 7 iv 0;1 Lead, SipKc aL LeA(t4 e.� ci 0 N co z 0 fiA Do Your Part, Be SepticSmart: The Do's and Don'ts of Your Septic System Learn these simple steps to protect your home, health, environment and property value: septicsmart U.S. Environmental Protection Agency Do: • Have your system inspected (in general) every three years by a licensed contractor and have the tank pumped, when necessary, generally every three to five years. Don't: • Pour cooking grease or oil down the sink or toilet. • Rinse coffee grounds into the sink. • Pour household chemicals down the sink or flush them. Do: • Eliminate or limit the use of a garbage disposal. • Properly dispose of coffee grounds a food. • Put grease in a container to harden before discarding in the trash. Don't: • Flush non -degradable products or chemicals, such as feminine hygiene products, condoms, dental floss, diapers, cigarette butts, cat litter, paper towels, pharmaceuticals. Do: • Dispose of these items in the trash can! Don't: • Park or drive on your drainfield. The weight can damage the drain lines. • Plant trees or shrubs too close to your drainfield, roots can grow into your system and clog it. Do: • Consult a septic service professional to advise you of the proper distance for planting trees and shrubs, depending on your septic tank location. Don't • Concentrate your water use by using your dishwasher, shower, washing machine, and toilet at the same time. All that extra water can really strain your septic system. Do: • Stagger the use of water -generating appliances. This can be helpful especially if your system has not been pumped in a long time. • Become more water efficient by fixing plumbing leaks and consider installing bathroom and kitchen faucet aerators and water -efficient products. For more SepticSmart tips, visit: www.epa.gov/septicsmart ISEFA 832-R-13-002 • September 2013