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HomeMy WebLinkAbout163 Borah Spur - 210926301001Environmental Health Department P.O. Box 179 500 Broadway Eagle, CO 81631-0179 Phone: (970) 328-8730 Fax: (970) 328-7185 Permit Permit No. OWTS-021040-2021 Permit Type: OWTS Permit Work Classification: New Permit Status: Active Issue Date: 4/16/2021 Expires: 8/16/2021 On-Site Wastewater Treatement System Project Address Parcel Number 163 BORAH SPUR, EAGLE AREA,210926301001 Owner Information Address Schmitt Family Trust Schmitt Family Trust Phone: Cell: Email: Inspections: For Inspections Call: (970) 328-8755 and call the Design Engineer Engineer Phone Email JVA Inc, Simon Farrell (303) 444-1951 sfarrell@jvajva.com Contractor License Number Phone Email Mata Excavating rafaelmata222@gmail.co m (970) 343-9868OWTSPL-000136-20 21 Permitted Construction / Details: Install the new system exactly as depicted in the JVA, Inc. design stamped, signed and dated March 9th, 2021 by Simon A. Farrell, PE. The OWTS is designed to accommodate the maximum daily flows for a 5 bedroom residence. The OWTS consists of a Valley Precast 1,250 gallon, single compartment tank with effluent filter and high water alarm placed on the outlet tee, followed by a 2,000 gallon Valley Precast three-compartment recirculating/dose tank which will send wastewater to two Orenco Advantex Series AX 20 pods for nitrification using an Orenco PF5005 pump. Nitrified effluent flows to the splitter valve for recirculation to the 1,250 gallon first tank for denitrification then is dosed using an Orenco PF 5005 pump to the automatic distribution valve that will alternate doses between two shallow beds each consisting of four rows of 18 Infiltrator Quick 4 Plus Standard chambers for a total of 144 chambers, for a total of 1,728 square feet of soil treatment area. Distribution lateral details, along with orifice size, spacing and orientation are on the design drawing. The contractor must verify that all electrical components and inspections are covered under the electrical permit associated with the Orenco Vericom control panel (Model VERICOMM-240VAC) and pump connections. The alarm must be connected to a separate circuit. Additional pump details are on the design drawing. Advantex systems must conform to the CDPHE technology approval letter dated May 1, 2018, including configuration in mode 3 for treatment level 3N. 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 Danielle Sell Date April 16, 2021 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 Friday, April 16, 2021 1 March 9, 2021 Ms. Claire Lewandowski, REHS Eagle County Environmental Health 590 Broadway Eagle, CO 81631 RE: Frost Creek - Onsite Wastewater Treatment System Design – Lot 20, Eagle County, CO Dear Claire: JVA Inc. (JVA) has prepared a design of an onsite wastewater treatment system (OWTS) to serve Lot 20 within the Frost Creek PUD. JVA is the designated engineer to process all OWTS permit applications within Frost Creek. JVA has prepared the OWTS design to be in general conformance with OWTS requirements of the PUD. The 2020 annual Water Quality Monitoring Report prepared by Wright Water Engineers documents exceedances of the 85th percentile background concentrations during sampling events in 2020. The report states the following ‘While the concentrations observed in 2020 were high for Total Phosphorus and Total Suspended Solids in surface water, upon evaluation of the pattern of concentrations of each water quality parameter for surface and groundwater at the Frost Creek PUD, there are no evident increasing trends in the concentration of the sampled parameters that were outside of the range of historical values. Therefore, all three components of the trigger limits have not yet been met, and mitigation action is not yet required.’ Sincerely, JVA, INCORPORATED By: _______________________ Simon Farrell, P.E. Project Manager, Associate Attachment A - OWTS design – Lot 20 Attachment B - Visual and Tactile Soil Evaluation Attachment C - Discharge pump calculations ATTACHMENT A – OWTS DESIGN – LOT 20 ATTACHMENT B – VISUAL AND TACTILE SOIL EVALUATION March 9, 2021 Ms. Claire Lewandowski, REHS Eagle County Environmental Health 590 Broadway Eagle, CO 81631 RE: Frost Creek Lot 20 – Site and Soil Investigation Report for an Onsite Wastewater Treatment System (OWTS) JVA Job No. 1037.21e Dear Ms. Lewandowski: Enclosed in this report are the results of the site and soil evaluation for Lot 20’s proposed OWTS located in Frost Creek, Colorado. This report provides information needed to support the design of an OWTS including: results from the preliminary investigation, the site visit, and the soil evaluation. Design calculations are included in the drawing Permit Set attached. PRELIMINARY INVESTIGATION In preparation for a site visit and soil evaluation, a preliminary investigation was conducted the week of October 28, 2020. Architectural site plans, aerial imagery, and previous Geotechnical investigations were used for the preliminary investigation. Geotechnical investigations were performed by HP Geotech in October 2002 across Frost Creek for OWTS suitability. Test holes were not investigated directly on Lot 20, however the current location of Lot 20 falls adjacent to Lot 49 as they were identified in the HP Geotech report. Results from the HP Geotech report for Lot 49 showed that Test Hole A had a topsoil from zero to six inches deep, then a silt layer to eight feet deep. Test Hole B had a topsoil from zero to six inches deep, then a silt layer to eight feet deep. No groundwater was encountered in either test hole. SITE VISIT AND SOIL EVALUATION A site visit and soil evaluation were conducted on November 4, 2020 by Julie Gustavson. Julie has passed the Colorado Professionals in Onsite Wastewater (CPOW) Soils Evaluation Course. The purpose of the site visit and soil evaluation was to confirm hypotheses from the preliminary investigation, identify the topography, landscape position, vegetation, and site constraints for the proposed OWTS, and to conduct a visual and tactile soil evaluation of the underlying soils where the proposed soil treatment area (STA) is to be located for both suitability and sizing. The topography of the site slopes steadily from southwest to northeast. The dominant vegetation at the proposed OWTS consists of native grasses and sage brush. Site Constraints are shown in the Permit Documents. For the visual and tactile soil evaluation, four soil profile holes were excavated using a tracked excavator in the locations identified in the Permit Documents. Analysis for Soil profile holes one and two is shown below for the preferred site for the OWTS. As seen in Table 1 below, soil morphology for Soil Profile Hole One from zero to half foot was loam topsoil and from half foot to eight feet was silty clay loam. Soil morphology for Soil Profile Hole Two Frost Creek Lot 20 Site and Soil Investigation 3/9/21 2 of 3 was similar to Soil Profile Hole One with loam topsoil from zero to half foot and from half foot to eight feet was a silty clay loam. Each soil profile hole is consistent with Soil Type R-1 with Soil Type 3. No redoximorphic features, indicating seasonally high groundwater, were observed in either hole. Figures 1 through 4 below show the soil profile holes and corresponding morphology. Therefore, R-1 Option 1 with Soil Type 3 was identified as the soil type. The proposed STA will be a bed designed using an LTAR of 0.35. Table 1 – Visual and Tactile Soil Results Profile Hole Depth (ft.) Percent Rock Soil Texture Soil Structure Type Soil Structure Grade Soil Type 1 0 – 0.5 0% retained on 20 mm sieve 0% retained on 2 mm sieve Loam Blocky Weak 2 0.5 – 8 65% retained on 20 mm sieve 10% retained on 2 mm sieve Silty Clay Loam Blocky Moderate R 1, Option 1; with Soil Type 3 2 0 – 0.5 0% retained on 20 mm sieve 0% retained on 2 mm sieve Loam Blocky Weak 2 0.5 – 8 65% retained on 20 mm sieve 10% retained on 2 mm sieve Silty Clay Loam Blocky Moderate R 1, Option 1; with Soil Type 3 Figure 1 – Profile Hole One Figure 2 – Profile Hole One Soil Morphology Frost Creek Lot 20 Site and Soil Investigation 3/9/21 3 of 3 Figure 3 – Profile Hole Two Figure 4 – Profile Hole Two Soil Morphology Sincerely, JVA, INCORPORATED By: __________________ Julie Gustavson Design Engineer ATTACHMENT C – DISCHARGE PUMP CALCULATIONS Pump Selection for a Pressurized System - Single Family Residence Project Frost Creek Lot 20 Parameters Discharge Assembly Size Transport Length Before Valve Transport Pipe Class Transport Line Size Distributing Valve Model Transport Length After Valve Transport Pipe Class Transport Pipe Size Max Elevation Lift Manifold Length Manifold Pipe Class Manifold Pipe Size Number of Laterals per Cell Lateral Length Lateral Pipe Class Lateral Pipe Size Orifice Size Orifice Spacing Residual Head Flow Meter 'Add-on' Friction Losses 2.00 85 40 2.00 6404 17 40 1.50 6.2 9 40 1.50 12 75 40 1.50 1/8 2 5 None 0 inches feet inches feet inches feet feet inches feet inches inches feet feet inches feet Calculations Minimum Flow Rate per Orifice Number of Orifices per Zone Total Flow Rate per Zone Number of Laterals per Zone % Flow Differential 1st/Last Orifice Transport Velocity Before Valve Transport Velocity After Valve 0.43 114 49.9 3 4.4 4.8 7.9 gpm gpm % fps fps Frictional Head Losses Loss through Discharge Loss in Transport Before Valve Loss through Valve Loss in Transport after Valve Loss in Manifold Loss in Laterals Loss through Flowmeter 'Add-on' Friction Losses 4.9 3.4 14.5 2.3 0.3 0.5 0.0 0.0 feet feet feet feet feet feet feet feet Pipe Volumes Vol of Transport Line Before Valve Vol of Transport Line After Valve Vol of Manifold Vol of Laterals per Zone Total Vol Before Valve Total Vol After Valve 14.8 1.8 0.9 23.8 14.8 26.5 gals gals gals gals gals gals Minimum Pump Requirements Design Flow Rate Total Dynamic Head 49.9 37.2 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: Inspection Result Eagle County, Colorado P.O. Box 179 500 Broadway Eagle, CO Phone: (970) 328-8730 Fax: (970) 328-7185 IVR Phone: 1-866-701-3307 Inspection Number: INSP-520172-2023 Permit Number: OWTS-021040-2021 Inspection Date: 01/18/2023 Inspector: Permit Type: OWTS Permit Inspection Type: OWTS Final Inspection Work Classification: NewOwner:Schmitt Family Trust Schmitt Family Trust Job Address:163 BORAH SPUR IVR Pin Number:192719 EAGLE AREA, CO Project:<NONE> Parcel Number:210926301001 Contractor:Phone: (970) 343-9868 / Cell: Mata Excavating Inspection Status: Approved Inspection Notes Inspector Comments Added Item: Septic Tank The OWTS consists of a Valley Precast 1,250 gallon, single compartment tank with effluent filter and high water alarm placed on the outlet tee, followed by a 2,000 gallon Valley Precast three-compartment recirculating/dose tank which will send wastewater to two Orenco Advantex Series AX 20 pods for nitrification using an Orenco PF5005 pump was installed. Added Item: Record Drawing Received 1/9/2023 from JVA Inc. Added Item: Record Photos Received 1/9/2023 from JVA Inc. Added Item: Site and Soil Received 4/9/2021 from JVA Inc. Added Item: Final Certification Letter Received 1/9/2023 from JVA Inc. Added Item: General Plan Received 4/9/2021 from JVA Inc. Added Item: Soil Treatment Area (STA) Nitrified effluent flows to the splitter valve for recirculation to the 1,250 gallon first tank for denitrification then is dosed using an Orenco PF 5005 pump to the automatic distribution valve that will alternate doses between two shallow beds each consisting of four rows of 18 Infiltrator Quick 4 Plus Standard chambers for a total of 144 chambers, for a total of 1,728 square feet of soil treatment area. Wednesday, January 18, 2023 For more information visit: http://www.eaglecounty.us Page 1 of 2 Added Item: Identification of Systems Contractor Mata Excavating was the licensed installer. Wednesday, January 18, 2023 For more information visit: http://www.eaglecounty.us Page 2 of 2 January 9, 2023 Claire Lewandowski, Environmental Health Specialist III Eagle County Environmental Health 500 Broadway Street Eagle, CO 81631 RE: Onsite Wastewater Treatment System Final Certification – 163 Borah Spur, Frost Creek Lot 20 Dear Claire: The Onsite Wastewater Treatment System (OWTS) covered under Eagle County Permit No. OWTS-021040-2021 was installed by Mata Excavating for 163 Borah Spur and is ready for final certification from Eagle County Environmental Health. This letter certifies that the construction of the OWTS was completed per the approved design plan. The final record drawings from JVA, maintenance contract between Frost Creek and Valley Precast, and construction photographs are provided as attachments. As part of the final approval process JVA observed that start-up was completed by the manufacturer’s representative and completed a site visit to check all system components. The system is connected and can be monitored remotely as required in the PUD. Sincerely, JVA, INCORPORATED By: ________________________ Simon Farrell, P.E. Project Manager, Associate Enclosure: Attachment A – Record Drawings Attachment B – Maintenance Contract Attachment C – Construction Photographs CC: Chelsea Fagan, JVA ATTACHMENT A – RECORD DRAWINGS FROST CREEK LOT 20 ONSITE WASTEWATER TREATMENT SYSTEM EAGLE COUNTY, COLORADO PERMIT SET MARCH 2021 Set No._______ JVA, Inc.1319 Spruce Street www.jvajva.com Boulder, CO 80302 303.444.1951 Boulder ● Fort Collins ● Winter Park Glenwood Springs ● Denver 49466SIMON A . FAR R ELLPROF E S SIONA L E N G INEERCOLOR A D O REGIS T E RED03/09/2021 © JVA, Inc.1319 Spruce Street www.jvajva.com Boulder, CO 80302 303.444.1951 Boulder ● Fort Collins ● Winter Park Glenwood Springs ● Denver 49466SIMON A . FAR R ELLPROF E S SIONA L E N G INEERCOLOR A D O REGIS T E RED03/09/2021 CONFORMED TO CONSTRUCTION RECORD © JVA, Inc.1319 Spruce Street www.jvajva.com Boulder, CO 80302 303.444.1951 Boulder ● Fort Collins ● Winter Park Glenwood Springs ● Denver 49466SIMON A . FAR R ELLPROF E S SIONA L E N G INEERCOLOR A D O REGIS T E RED03/09/2021 CONFORMED TO CONSTRUCTION RECORD © JVA, Inc.1319 Spruce Street www.jvajva.com Boulder, CO 80302 303.444.1951 Boulder ● Fort Collins ● Winter Park Glenwood Springs ● Denver 49466SIMON A . FAR R ELLPROF E S SIONA L E N G INEERCOLOR A D O REGIS T E RED03/09/2021 CONFORMED TO CONSTRUCTION RECORD © JVA, Inc.1319 Spruce Street www.jvajva.com Boulder, CO 80302 303.444.1951 Boulder ● Fort Collins ● Winter Park Glenwood Springs ● Denver 49466SIMON A . FAR R ELLPROF E S SIONA L E N G INEERCOLOR A D O REGIS T E RED03/09/2021 CONFORMED TO CONSTRUCTION RECORD ATTACHMENT B – MAINTENANCE CONTRACT ATTACHMENT C – CONSTRUCTION PHOTOGRAPHS Lot 20