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HomeMy WebLinkAbout645 Amherst Rd - 211120407016Environmental Health Department P.O. Box 179 500 Broadway Eagle, CO 81631-0179 Phone: (970) 328-8730 Fax: (970) 328-7185 Permit Permit No. OWTS-018315-2020 Permit Type: OWTS Permit Work Classification: Alteration Permit Status: Active Issue Date: 3/11/2020 Expires: 7/9/2020 On-Site Wastewater Treatement System Project Address Parcel Number 645 AMHERST RD, GYPSUM AREA,211120407016 Owner Information Address Amy Goldman 645 Amherst RD Phone: (714) 679-4137 Cell: Email: aagp1313@gmail.com Inspections: For Inspections Call: (970) 328-8755 and call the Design Engineer Engineer Phone Email LKP Engineering, Inc., Luiza Petrovska, PE (970) 390-0307 luiza@lkpeng.com Contractor License Number Phone Email Beaumont Excavating bexinc@mail.com(970) 390-9393OWTSPL-000063-20 20 Permitted Construction / Details: Alteration of the OWTS exactly as depicted in the LKP Engineering Inc design, stamped, signed, and dated November 8, 2019 by Luiza Petrovska, PE. The OWTS design includes an evaluation of the existing system, permit 2506-06IS, to serve both the existing 4 bedroom residence and connect and serve the proposed 1 bedroom Auxiliary Dwelling Unit (ADU). The alteration of the OWTS consists of a new 1,000 gallon three-compartment Valley Precast septic tank (model #1000T-3CP-F-HH, total volume 1500 gallon), installed for the primary treatment of effluent from the ADU. The tank will be equipped with an Orenco PF500511 High Head pump installed in the third compartment, and effluent filter in the tee between the second and third compartments, with set the pump floats to deliver 90 gallons of effluent on demand approximately 161 feet to the fourth row of chambers in the existing serial distribution soil treatment area, as shown on the design drawing. Contact Eagle County Environmental Health and the design engineer well in advance of requesting inspections prior to backfilling any component of the OWTS. The design engineer is responsible for conducting all inspections necessary to certify the installation and assure functionality of the system. System certification, along with photos and a record drawing is required to be submitted to, and approved by, Eagle County Environmental Health prior to the use of the system or occupancy of the dwelling. THIS PERIMT EXPIRES BY TIME LIMITATION AND BECOMES NULL AND VOID IF THE WORK AUTHORIZED BY THE PERMIT IS NOT COMMENCED WITHIN 120 DAYS OF ISSUANCE, OR BEFORE THE EXPIRATION OF AN ASSOCIATED BUILDING PERMIT Issued by: Environmental Health Department, Eagle County, CO Claire Lewandowski Date March 11, 2020 CONDITIONS 1. 2.ALL INSTALLATIONS MUST COMPLY WITH ALL REQUIREMENTS OF THE EAGLE COUNTY PUBLIC HEALTH AGENCY ON-SITE WASTEWATER TREATMENT SYSTEM REGULATIONS ADOPTED PURSUANT TO AUTHORITY GRANTED IN CR.S. 25-10-101, et seq., AS AMENDED 3.THIS PERMIT IS VALID ONLY FOR PERFORMING WORK ON OWTS ASSOCIATED WITH STRUCTURES WHICH HAVE FULLY COMPLIED WITH COUNTY ZONING AND BUILDING REQUIREMENTS CONNECTION TO, OR USE WITH, ANY DWELLING OR STRUCTURE NOT APPROVED BY THE ZONING AND BUILDING DEPARTMENTS SHALL AUTOMATICALLY BE A VIOLATION OF A REQUIREMENT OF THE PERMIT AND WILL RESULT IN BOTH LEGAL ACTION AND REVOCATION OF THE PERMIT 4.1.6(A)(1) EAGLE COUNTY PUBLIC HEALTH AGENCY ON-SITE WASTEWATER TREATMENT SYSTEM REGULATIONS REQUIRES ANY PERSON WHO CONSTRUCTS, ALTERS OR INSTALLS AN ON-SITE WASTEWATER TREATMENT SYSTEM TO BE LICENSED Wednesday, March 11, 2020 1 *************************************************************************** APPLICATION FOR ON-SITE WASTEWATER TREATMENT SYSTEM (OWTS) PERMIT INCOMPLETE APPLICATIONS MAY NOT BE ACCEPTED (SITE PLAN MUST BE INCLUDED) FEE SCHEDULE APPLICATION FEE FOR NEW OWTS OR MAJOR REPAIRS $800.00 MINOR REPAIR FEE $400.00 Fee includes the design review, permitting and maintenance of OWTS records Make all checks payable to: Eagle County Treasurer Property Owner: _______________________________________Phone: ________________________ Owner Mailing Address: ________________________________ email: _________________________ Professional Engineer: __________________________________ Phone: ________________________ Applicant / Contact Person: ______________________________Phone: ________________________ Licensed Systems Contractor Name / Company: ___________________________________________ Contractor Mailing Address: _________________________________ Contractor License #:_______ Contractor Phone Number: ________________________ email: ______________________________ OWTS Permit Application is for: ____ New Installation ____ Alteration ____ Repair Tax Parcel Number: _________________________________ Lot Size: ________________________ Assessor’s Link: www.eaglecounty.us/patie/ Physical Address: _____________________________________________________________________ Legal Description: ____________________________________________________________________ Building Type: _____ Residential / Single Family _____ Residential / Multi Family _____ Commercial / Industrial Number of Bedrooms: ______ Number of Bedrooms: ______ Type of Use: _______________ *As of 06/27/2014, all systems require design by a Registered Professional Engineer. Type of Water Supply: ____ Private Well ____ Spring ____ Surface ____ Public If Public, Name of Supplier: ____________________________________________________________ Applicant Signature: ______________________________________Date:_______________________ **************************************************************************** Office Use Only: OWTS PERMIT # __________________ BUILDING PERMIT # ____________________ Amount Paid: ___________ Receipt #: ___________ Check #: ___________ Date: ______________ DEPARTMENT OF ENVIRONMENTAL HEALTH (970) 328-8755 FAX: (970) 328-8788 TOLL FREE: 800-225-6136 www.eaglecounty.us P.O. Box 179 500 Broadway Eagle, CO 81631 environment@eaglecounty.us May 6, 2020 Ms. Amy Goldman Aagp1313@gmail.com RE: Final approval of the: Septic System Installation, OWTS-018315-2020 Property location: 645 Amherst Road, Eagle County Ms. Goldman, This letter is to inform you that the above-referenced was inspected and is finalized. This OWTS permit was approved for the expansion of the OWTS (permit 2506-06IS) to connect and serve a newly proposed 1 bedroom ADU and the existing 4 bedroom residence. Additional information about the maintenance your septic system needs can be accessed through our website links, provided on the Environmental Health Department’s septic system resource page. Be aware that changes in the use of your property or alterations of your building may require commensurate changes to, or relocation of, your septic system. Landscape features, trees with tap roots, irrigation systems and parking areas above the soil treatment area can cause premature system failure. It is equally important that you notice and immediately repair dripping faucets and hissing toilets as this will certainly cause the system to fail. If you have any questions regarding this information, please contact us at (970) 328 -8755 and reference the OWTS septic permit number. Best Regards, Claire Lewandowski, REHS Environmental Health Specialist III Attachments: Certification Letter and Design – Septic System Flyer – Final Letter PUBLIC HEALTH & ENVIRONMENT (970) 328-8755 FAX: (970) 328-8788 environment@eaglecounty.us EVALUATION OF THE EXISTING SEPTIC SYSTEM FOR THE PROPOSED ADU THE EXISTING RESIDENCE HAS 4-BEDROOMS BASED ON THE COUNTY DATA, THE SYSTEM WAS DESIGNED BASED ON A PERCOLATION RATE OF 22 MINUTES PER INCH OR LTAR=0.5GPD/SF. WITH THIS DATA A SEPTIC SYSTEM WAS DESIGNED AND INSTALLED. THE INSTALLED SYSTEM CONSISTS OF 1250 GALLONS, TWO-COMPARTMENT, CONCRETE SEPTIC TANK AND A LEACHFIELD, CONSISTING OF FIVE TRENCHES WITH 22 QUICK 4 STANDARD INFILTRATOR CHAMBERS IN EACH. BASED ON OWTS #43 IN EFFECT AT PRESENT, FOR A PERCOLATION RATE RANGE OF 16 TO 25 MINUTES PER INCH, THE LTAR = 0.6GPD/SF EVALUATION OF THE SOIL TREATMENT AREA TO SERVICE A FIVE-BEDROOM RESIDENCE (THE 4 BEDROOMS FOR THE EXISTING MAIN HOUSE AND ONE BEDROOM FOR THE PROPOSED ADU TO BE CONSTRUCTED ABOVE THE EXISTING GARAGE MAXIMUM DAILY FLOW Qmax = 5 BEDROOMS X 150 GALLONS PER DAY Qmax= 750 GPD SEPTIC TANK V = 1000 GALLONS MINIMUM AVAILABLE RECOMMENDED, 1000-GALLONS THREE COMPARTMENTS,CONCRETE, SEPTIC TANK BY VALLEY PRECAST WITH AN ORENCO PUMP AND AN EFFLUENT FILTER. TOTAL ABSORPTION AREA BASED ON APPLICATION RATE: A = 750GPD/0.6GPD/S.F. A = 1250 S.F. WITH QUICK 4 , STANDARD INFILTRATOR CHAMBER SYSTEM IN A TRENCH CONFIGURATION WITH AN ALLOWED 30 PERCENT REDUCTION IN THE ABSORPTION AREA, THE REQUIRED AREA WILL BE: Aadjusted = 1250 X 0.7 = 875 S.F. SURFACE AREA ALLOWED FOR INFILTRATOR CHAMBER = 12 S.F. REQUIRED NUMBER OF INFILTRATORS PER THE CURRENT REGULATION = 73 THE EXISTING STA HAS FIVE TRENCHES WITH 22 INFILTRATOR CHAMBERS EACH FOR A TOTAL OF 110 INFILTRATORS, THUS IT IS CAPABLE OF SERVICING THE ADDITIONAL EFFLUENT FROM THE ONE-BEDROOM, GARAGE ADU. (WITHOUT THE ADJUSTMENT FACTOR THE REQUIRED NUMBER OF INFILTRATORS WILL BE 104, WHICH IS STILL LESS THAN THE INSTALLED 110 INFILTRATOR CHAMBERS.) THE EFFLUENT FROM THE 1-BDRM GARAGE ADU WILL BE PUMPED IN ORDER TO BE LIFTED TO THE EXISTING STA, BUT NOT PRESSURE DOSED.GYPSUM CREEK ROADAMHER S T R O A D YALE C O U R T INSTALLATION AND INSPECTION NOTES: 1. BENDS IN THE BUILDING SEWER LINE SHALL BE LIMITED TO 45 DEGREES. 2. THE SEPTIC TANK SHALL BE INSTALLED LEVEL. 3. THE TANK SHALL HAVE RISERS OVER EACH ACCESS MANHOLE AND ALL RISERS SHALL EXTEND TO OR ABOVE FINAL GRADE. 4. EACH RISER COVER SHALL HAVE A SECURE CLOSING MECHANISM, SUCH AS A LOCK, SPECIAL HEADED BOLTS OR SCREWS, OR SUFFICIENT WEIGHT TO PREVENT UNAUTHORIZED ACCESS. 5. THE SEPTIC TANK WILL BE BACKFILLED UP TO THE INVERTS. 6. THE EFFLUENT LINE FROM THE PUMP CHAMBER WILL BE CONNECTED TO THE FOURTH ROW OF THE INFILTRATOR TRENCHES OF THE EXISTING SYSTEM, 7. THE EFFLUENT LINE WILL BE CONNECTED INTO AN OPENING ON THE END PLATE, OPPOSITE FROM THE EXISTING SERIAL DISTRIBUTION CONNECTION, IF AVAILABLE, OR AN OPENING WILL BE CREATED TO FIT THE EFFLUENT LINE. 8. THE DISTRIBUTION LATERAL WILL BE SUSPENDED FROM THE TOP OF THE INFILTRATOR CHAMBERS. 9. HAND EXCAVATION WILL BE REQUIRED TO UNCOVER THE INFILTRATOR CHAMBER WHERE THE PERFORATED AND CAPPED, DISTRIBUTION LATERAL WILL TERMINATE. 10. ALL INSTALLATIONS SHALL MEET THE RULES AND REGULATIONS OF THE EAGLE COUNTY ENVIRONMENTAL HEALTH DIVISION, OWTS REG 43 AND THE EAGLE COUNTY PUBLIC HEALTH AGENCY ON-SITE WASTEWATER TREATMENT REGULATIONS. 11. DO NOT BACKFILL ANY PART OF THE SYSTEM PRIOR TO THE INSPECTION. 12. ALL PIPING MUST HAVE SUITABLE SUPPORT OF ONSITE SOIL OR SAND AT THE TIME OF INSPECTION. 13.FOR THE INSPECTION OF THE SEPTIC SYSTEM - NOTIFY THE ECEH DEPARTMENT AND THE DESIGN ENGINEER PRIOR TO BACKFILLING ANY PART OF THE SYSTEM TO SCHEDULE AN INSPECTION. 48-HOUR NOTICE IS REQUIRED. PUMP SELECTION A DISCHARGE PUMP CAPABLE OF DELIVERING 20 GPM AGAINST 28 FEET OF TOTAL DYNAMIC HEAD WILL BE USED. THE ELEVATIONS BETWEEN THE PUMP INVERT AND THE INVERT OF THE INFILTRATOR CHAMBER INLET MUST BE FIELD VERIFIED AND REPORTED BACK TO THE ENGINEER PRIOR TO INSTALLATION. FOR THE DISCHARGE PUMP USE ORENCO, PF500511 HIGH HEAD EFFLUENT PUMP. THE PUMP DOSING WILL BE ON DEMAND WITH 90 GALLONS PER DOSE. 20-FOOT, 1.5-INCH DIAMETER SCH40 PVC, DISTRIBUTION LATERAL, PERFORATED AT THE TOP WITH 1/4-INCH HOLES AT 3-FT INTERVALS, SUSPENDED FROM THE TOP OF THE INFILTRATOR CHAMBERS APPROXIMATE LOCATION OF THE EXISTING LEACHFIELD (SKETCHED FROM COUNTY DATA FILES) APPROXIMATE LOCATION OP THE SEPTIC TANK FOR THE MAIN HOUSE PROPOSED, 1000-GALLONS, THREE COMPARTMENTS CONCRETE SEPTIC TANK BY VALLEY PRECAST WITH AN ORENCO PUMP AND EFFLUENT FILTER PROPOSED CLEANOUT ABOUT 10 FEET, 4-INCH DIAMETER SDR35, BUILDING SEWER LINE10'~20' ABOUT 161 FEET, 1.5-INCH DIAMETER, SCH40 PVC EFFLUENT LINE AMHERS T R O A D CAP THE END DRILL ONE 1/4-INCH HOLE AT THE INVERT OF THE FAR END OF THE LATERAL FOR DRAINING OF THE REMAINING EFFLUENT FROM THE PIPE BETWEEN DOSING AND PLACE A ROCK UNDER IT TO PREVENT EROSION (TYPICAL) GENERAL NOTES 1. BEFORE DIGGING NOTIFY ALL APPLICABLE UTILITY COMPANIES. 2. ALL WORK SHALL COMPLY WITH ALL APPLICABLE CODES AND ORDINANCES. 3. NOTES AND DETAILS ON SPECIFIC DRAWINGS TAKE PRECEDENCE OVER GENERAL NOTES AND TYPICAL DETAILS. 4. CONFLICTS OR DISCREPANCIES SHALL BE BROUGHT TO THE ATTENTION OF THE ENGINEER IMMEDIATELY AND PRIOR TO PROCEEDING WITH WORK. 5. ALL FINISH GRADES SHALL PROVIDE FOR NATURAL RUNOFF OF WATER WITHOUT LOW SPOTS OR POCKETS OVER THE LEACHFIELD. 6. ALL DISTURBED AREAS WILL BE RESTORED AND REVEGETATED. 7. EROSION CONTROL IS THE RESPONSIBILITY OF THE GENERAL CONTRACTOR. DRAWN BY: CHECKED BY: PROJECT NO.: SHEET: DRAWING NO.: DATE:BYDESCRIPTIONDATENO.L.P. L.P. C-1 19-3374 NOVEMBER 8, 2019 19-3374ADU OWTS.DWGADU - ONSITE WASTEWATER TREATMENTSYSTEMLOT 14, HARDSCRABBLE SUBDIVISION645 AMHERST ROAD, TOWN OF GYPSUMEAGLE COUNTY, COLORADOPREPARED FORP.O. Box 724 EAGLE, CO 81631Tel (970) 390-0307www.LKPEngineering.comAMY GOLDMANMAP ~1"=250' SITE Pump Selection for a Non-Pressurized System - Single Family Residence Project 19-3374-Goldman ADU / 645 Amherst Road Parameters Discharge Assembly Size Transport Length Transport Pipe Class Transport Line Size Distributing Valve Model Max Elevation Lift Design Flow Rate Flow Meter 'Add-on' Friction Losses 2.00 161 40 1.50 None 17 20 None 0 inches feet inches feet gpm inches feet Calculations Transport Velocity 3.2 fps Frictional Head Losses Loss through Discharge Loss in Transport Loss through Valve Loss through Flowmeter 'Add-on' Friction Losses 0.8 3.9 0.0 0.0 0.0 feet feet feet feet feet Pipe Volumes Vol of Transport Line 17.0 gals Minimum Pump Requirements Design Flow Rate Total Dynamic Head 20.0 21.8 gpm feet 0 10 20 30 40 50 60 70 80 0 20 40 60 80 100 120 140 160 Net Discharge (gpm) PumpData PF5005 High Head Effluent Pump 50 GPM, 1/2HP 115/230V 1Ø 60Hz, 200/230V 3Ø 60Hz Legend System Curve: Pump Curve: Pump Optimal Range: Operating Point: Design Point: ! G 645 Amherst Road (previously known as Yale Ct), Eagle County, Colorado G Lot 14, Hardscrabble Subdivision, Town of Gypsum, Eagle County, Colorado. G There is an existing, 4-bedroom residence on the upper part of the lot and a large, detached garage structure on the lower part. G There is a public water service in the subdivision. G There are records of existing septic system on the property. The old permit number is 2506-06, approved 10-27-2006. G The topography of the leachfield site is moderate to steep, sloping up from the road up to about the main house and then dropping down to the south. Percolation data from the old records was used for the capacity evaluation. G ! G The existing leachfield is located on a summit, south the existing residence. G There was snow and wild grass with some juniper trees on the site at the time of our site visit. G The lot and the subdivision are on a mountainous area on the south side of the Town of Gypsum. G The current use is residential. It appears that there was ranching on the property previously. ! G Soil testing was not done for this evaluation G None Done ! G This site evaluation was completed by Luiza Petrovska, PE, of LKP Engineering, Inc. LKP Engineering, Inc., is located at 67 Robins Egg Lane, Eagle, Colorado. The phone number is 970-390-0307 and Luiza=s email is luiza@lkpeng.com G November 4, 2019. G No G From the STA to the new septic tank it is about 127 feet, From the proposed septic tank to the detached garage with the proposed ADU is about 10 feet, Septic Tank to property lines greater than 10 feet. G : Items 1-4, not applicable. G # # # # # # # G Access to the proposed new septic tank location will be difficult due to a 4-foot boulder wall at the edge of the existing garage and due to landscaping. G None known G here were no other difficulties encountered during the site evaluation. P.O. Box 724, Eagle, CO 81631 Tel. (970) 390-0307 April 6, 2020 Amy Goldman 645 Amherst Road Gypsum, Co 81637 aagp1313@gmail.com RE: Inspection of Septic System Installation Septic Tank – 1 Bedroom System ADU Lot 14, Hardscrabble Subdivision 645 Amherst Road, Town of Gypsum Eagle County, Colorado Project No. 19-3374– OWTS-018315-2020 Dear Amy: At the request of Jeff Beaumont, Beaumont Excavating, the installer, on April 1, 2020, we visited your property on Lot 14, Hardscrabble Subdivision, 645 Amherst Road, Town of Gypsum, Eagle County, Colorado. The purpose of our site visit was to inspect the installation of the new septic tank and the connection to the existing leachfield. The system was installed in overall compliance with the ADU OWTS Design, dated November 9, 2019. At the time of the inspection we observed the following: A new building sewer line and a cleanout were constructed on the west side of the Detached garage (with the apartment above) at about 14.5 feet south from the NW corner, as shown on the attached as-built sketch. The building sewer line was 4-inch diameter SCH40PVC from the building to just before the cleanout and then 4-inch diameter SDR35 PVC pipe. They installed 1000-gallons, three compartments, precast, concrete, septic tank by Valley Precast with an effluent filter in the second compartment and an Orenco PF500511 high-head pump assembly with a filter in the third compartment. The inlet of the tank had the Tee installed. The tank access ports had corrugated, plastic risers with secured, green, plastic covers. The covers were secured with nuts, bolts and screws. All compartments had 48 inches risers. The effluent line from the pump chamber to the soil treatment area was 1.5-inch diameter SCH40PVC with a continuous slope to drain back into the pump chamber once the pump is shut off. They connected the effluent line into the third row of infiltrator chambers of the existing soil treatment area. A 20-foot, 1.5-inch diameter SCH40 PVC, distribution lateral, perforated at the top with 1/4-inch holes at 3- ft intervals, was suspended from the top of the infiltrator chambers with plastic ties. The control panel for the pump was being installed on the north side of the building, facing the road. The pump start-up will be done by Valley Precast. There is no other warranty either expressed or implied. If you have any questions, please do not hesitate to call. Sincerely, LKP Engineering, Inc. Luiza Petrovska, PE cc: Eagle County Environmental Health Department E-mail: environment@eaglecounty.us J:\_WP X4-LKP\_2019\19-3374OSI-TANK-ADU.DOCX 20-FOOT, 1.5-INCH DIAMETER SCH40 PVC, DISTRIBUTION LATERAL, PERFORATED AT THE TOP WITH 1/4-INCH HOLES AT 3-FT INTERVALS, SUSPENDED FROM THE TOP OF THE INFILTRATOR CHAMBERS APPROXIMATE LOCATION OF THE EXISTING LEACHFIELD (SKETCHED FROM COUNTY DATA FILES) APPROXIMATE LOCATION OP THE SEPTIC TANK FOR THE MAIN HOUSE 1000-GALLONS, THREE COMPARTMENTS CONCRETE SEPTIC TANK BY VALLEY PRECAST WITH AN ORENCO PUMP AND EFFLUENT FILTER AND 4-FT CORRUGATED PLASTIC RISERS WITH SECURED GREEN PLASTIC COVERS CLEANOUT 4-INCH DIAMETER SDR35, BUILDING SEWER LINE ABOUT 158 FEET, 1.5-INCH DIAMETER, SCH40 PVC EFFLUENT LINE AMHERST R O A D 12'57.3'87'63' 100'+/-70'+/-APPROXIMATE LOCATION OF INSPECTION PORTS OBSERVED IN THE GRASS 122' 31' 5' 55.5' 3.3' 2.5' CONTROL PANEL SKETCH PROJECT NO.: DATE: PROJECT DESCRIPTION:LKP Engineering, Inc. CIVIL/GEOTECHNICAL PERMIT NO.:AS-BUILT 19-3374 OWTS-018315-2020 April 1, 2020 P.O. Box 724 Eagle, CO 81631, (970) 390-0307, www.LKPEngineering.com LOT 14, HARDSCRABBLE SUBDIVISION 645 AMHERST ROAD, TOWN OF GYPSUM EAGLE COUNTY, COLORADO GOLDMAN RESIDENCE ADU NOTE: THE SKETCH IS NOT BASED ON A SURVEY. ALL MEASUREMENTS ARE APPROXIMATE Valley Precast 28005 CR 317 Buena Vista, CO 81211 vauayprocastx*a , Phone: 719-395.6764 f::.. ". ,:i' Fax: 719-395-3727 April 16, 2020 To Whom It May Concern: We have been to the following site(s): 645 Amherst, Gypsum Pump startup has been completed. We have verified that the system was started properly. The System went through several cycles with no issues. Sincerely, Jon Hollenbeck General Manager Colora�a MIT�� , ■ Prol968iDnal� in "`�,.. ii. gn�te rs SYSTEMS ;NC Waat aser ce WO y `,`V l yR� 4,. , ��� a.�: x. y 4��4 s. 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