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HomeMy WebLinkAbout1670 Frost Creek Dr - 210936304001Environmental Health Department P.O. Box 179 500 Broadway Eagle, CO 81631-0179 Phone: (970) 328-8730 Fax: (970) 328-7185 Permit Permit No. OWTS-021326-2021 Permit Type: OWTS Permit Work Classification: New Permit Status: Active Issue Date: 5/11/2021 Expires: 9/8/2021 On-Site Wastewater Treatement System Project Address Parcel Number 1670 FROST CREEK DR, EAGLE AREA,210936304001 Owner Information Address Kristie Calvin Phone: Cell: (303) 316-0716 Email: kristie.calvin@outlook.com 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 Defina Construction, INC gary@definaconstruction.c om (970) 376-6702OWTSPL-000140-20 21 Permitted Construction / Details: Install the new system exactly as depicted in the JVA, Inc. design stamped, signed and dated March 18th, 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 1,500 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 (2) Orenco Advantex Series AX 20 pods for nitrification using an Orenco PF500512 pump. Nitrified effluent flows to the splitter valve for recirculation to the 1,500 gallon first tank for denitrification then is dosed using an Orenco PF 500512 pump to the automatic distribution valve that will alternate doses between four shallow trenches each consisting of 16 Infiltrator Quick 4 Plus Standard chambers for a total of 64 chambers, for a total of 738 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 Claire Lewandowski Date May 11, 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 Tuesday, May 11, 2021 1 March 18, 2021 Ms. Claire Lewandowski, REHS Eagle County Environmental Health 590 Broadway Eagle, CO 81631 RE: Frost Creek - Onsite Wastewater Treatment System Design – Lot 43, Eagle County, CO Dear Claire: JVA Inc. (JVA) has prepared a design of an onsite wastewater treatment system (OWTS) to serve Lot 43 within the Frost Creek PUD. JVA Inc. (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 43 Attachment B - Visual and Tactile Soil Evaluation Attachment C - Discharge pump calculations ATTACHMENT A – OWTS DESIGN – LOT 43 ATTACHMENT B – VISUAL AND TACTILE SOIL EVALUATION March 18, 2021 Claire Lewandowski, REHS Eagle County Environmental Health 590 Broadway Eagle, CO 81631 RE: Frost Creek Lot 43 – Site and Soil Investigation Report for an Onsite Wastewater Treatment System (OWTS) JVA Job No. 1037.13e Dear Claire: Enclosed in this report are the results of the site and soil evaluation for Lot 43’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 November 4, 2019. 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; this geotechnical investigation has been submitted to Eagle County previously. The HP Geotech report shows there were no test holes dug on present day Lot 43, however the results from two nearby test holes had of a topsoil from zero to six inches deep followed by a clay layer from 0.5 to 8 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 8, 2019 by James Cochran; James 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 west to east with a ditch through the western side of the site running north to south. The dominant vegetation at the proposed OWTS consists of native grasses and sage. Site Constraints are shown in the Permit Documents. For the visual and tactile soil evaluation, two soil profile holes were excavated using a tracked excavator in the approximate locations identified in the Permit Documents. As seen in Table 1 below, soil morphology for each soil profile hole from the surface to eight feet deep was consistent with a Soil Type 3. Figures 1 through 4 below show the soil profile holes and corresponding morphology. No redoximorphic features, indicating seasonally high groundwater, were observed in either profile hole. Therefore, Frost Creek Lot 43 OWTS Site and Soil Investigation 3/18/21 2 of 3 Soil Type 3 was identified as the soil type; the LTAR of soil type 3 treatment level 1 will be used. The proposed STA will be pressurized trenches with infiltration chambers. 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 – 1 0% retained on 20 mm sieve 10% retained on 2 mm sieve Silty clay loam Blocky Moderate 3 1 – 8 0% retained on 20 mm sieve < 35% retained on 2 mm sieve Silty clay loam Granular Moderate 3 2 0 – 1 0% retained on 20 mm sieve 10% retained on 2 mm sieve Silty clay loam Blocky Moderate 3 1 – 8 0% retained on 20 mm sieve < 35% retained on 2 mm sieve Silty clay loam Granular Moderate 3 Figure 1 – Profile Hole One Figure 2 – Profile Hole One Soil Morphology Frost Creek Lot 43 OWTS Site and Soil Investigation 3/18/21 3 of 3 Figure 3 – Profile Hole Two Figure 4 – Profile Hole Two Soil Morphology Sincerely, JVA, INCORPORATED By: ____________________________________ James Cochran, P.E. Project Engineer DISCHARGE PUMP CALCULATIONS Pump Selection for a Pressurized System - Single Family Residence Project Frost Creek Lot 43 Pump Select Parameters Discharge Assembly Size Transport Length Transport Pipe Class Transport Line Size Distributing Valve Model 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 1.50 41 40 1.50 None 6 27 40 1.50 4 67 40 1.50 1/8 2 5 None 0 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 0.43 136 59.3 4 3.2 9.4 gpm gpm % fps Frictional Head Losses Loss through Discharge Loss in Transport Loss through Valve Loss in Manifold Loss in Laterals Loss through Flowmeter 'Add-on' Friction Losses 10.6 7.6 0.0 1.4 0.4 0.0 0.0 feet feet feet feet feet feet feet Pipe Volumes Vol of Transport Line Vol of Manifold Vol of Laterals per Zone Total Volume 4.3 2.9 28.3 35.5 gals gals gals gals Minimum Pump Requirements Design Flow Rate Total Dynamic Head 59.3 30.9 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-521747-2023 Permit Number: OWTS-021326-2021 Inspection Date: 04/26/2023 Inspector: Permit Type: OWTS Permit Inspection Type: OWTS Final Inspection Work Classification: NewOwner:Kristie Calvin Job Address:1670 FROST CREEK DR IVR Pin Number:193025 EAGLE AREA, CO Project:<NONE> Parcel Number:210936304001 Contractor:Phone: (970) 376-6702 / Cell: (970) 376-6702Defina Construction, INC Inspection Status: Approved Inspection Notes Inspector Comments Added Item: Septic Tank A Valley Precast 1,500 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 (2) Orenco Advantex Series AX 20 pods for nitrification using an Orenco PF500512 pump. Nitrified effluent flows to the splitter valve for recirculation to the 1,500 gallon first tank for denitrification then is dosed using an Orenco PF 500512 pump to the automatic distribution valve was installed. Added Item: Record Drawing Received 4/25/2023 from JVA Inc. Added Item: Record Photos Received 4/25/2023 from JVA Inc. Added Item: Site and Soil Received 5/6/2021 from JVA Inc. Added Item: Higher Level Treatment System O&M Contract received 4/25/2023. Added Item: Final Certification Letter Received 4/25/2023 from JVA Inc. Added Item: General Plan Received 5/6/2021 from JVA Inc. Wednesday, April 26, 2023 For more information visit: http://www.eaglecounty.us Page 1 of 2 Added Item: Soil Treatment Area (STA) Four shallow trenches each consisting of 16 Infiltrator Quick 4 Plus Standard chambers for a total of 64 chambers, for a total of 738 square feet of soil treatment area. Added Item: Identification of Systems Contractor Defina Construction was the licensed installer. Wednesday, April 26, 2023 For more information visit: http://www.eaglecounty.us Page 2 of 2 April 25, 2023 Claire Lewandowski, Environmental Health Specialist III Eagle County Environmental Health 500 Broadway Street Eagle, CO 81631 RE: Onsite Wastewater Treatment System Final Certification – 1670 Frost Creek Dr, Frost Creek Lot 43 Dear Claire: The Onsite Wastewater Treatment System (OWTS) covered under Eagle County Permit No. OWTS-021326-2021 was installed by Defina Construction for 1670 Frost Creek Drive and is ready for final certification from Eagle County Environmental Health. This letter certifies that the construction of the OWTS was completed as per the approved design plan. The final record drawings from JVA, three-year maintenance contract, 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 (Valley Precast, Inc) 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 43 ONSITE WASTEWATER TREATMENT SYSTEM EAGLE COUNTY, COLORADO RECORD DRAWINGS APRIL 2023 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 RED03/18/2021 © JVA, Inc.1319 Spruce Street www.jvajva.com Boulder, CO 80302 303.444.1951 Boulder ● Fort Collins ● Winter Park Glenwood Springs ● Denver CONFORMED TO CONSTRUCTION RECORD 7394.0 7396.0 7398.0 7400.0 7402.0 7404.0 7406.0 7388.0 7390.0 7392.0 7394.0 7396.0 7398.0 7400.0 7402.0 7404.0 7406.0 7408.0 7410.0 7412.0 7414.0 7416.0 7 4 1 6 . 0 7418.0 7 4 1 8 . 0 7420.0 7 4 2 0 . 0 7422.0 7422.0 7410.0 7412.0 7414.0 7416.0 7418.0 7420.0 7386.0 7388.0 7390.0 7392.0 7394.0 7396.0 7398.0 7418.012' - 0"7424.6' 7423.8' 7425.5' 7425.3' © JVA, Inc.1319 Spruce Street www.jvajva.com Boulder, CO 80302 303.444.1951 Boulder ● Fort Collins ● Winter Park Glenwood Springs ● Denver 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 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 CONFORMED TO CONSTRUCTION RECORD ATTACHMENT B – MAINTENANCE CONTRACT ATTACHMENT C – CONSTRUCTION PHOTOGRAPHS Lot 43 Construction Photos 8/15/2022 To Whom It May Concern: We have been to the following site(s): 1670 Frost Creek Drive, Lot 43, Frost Creek, Eagle We have verified that the system was started properly. The System went through several cycles with no issues. Sincerely, Scott McIntosh Service Manager