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HomeMy WebLinkAbout440 Frost Creek Rd - 210925302007Environmental Health Department P.O. Box 179 500 Broadway Eagle, CO 81631-0179 Phone: (970) 328-8730 Fax: (970) 328-7185 Permit Permit No. OWTS-019702-2020 Permit Type: OWTS Permit Work Classification: New Permit Status: Active Issue Date: 9/25/2020 Expires: 1/25/2021 On-Site Wastewater Treatement System Project Address Parcel Number 440 FROST CREEK DR, EAGLE AREA,210925302007 Owner Information Address Ken and Mamie Jones 1908 Grosvenor LN Colleyville, TX Phone: (970) 331-1150 Cell: Email: kjones@epacsales.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-000081-20 20 Permitted Construction / Details: Install the OWTS exactly as depicted in the JVA, Inc design stamped, signed, and dated September 11, 2020 by Simon A. Farrell, PE. The system is designed to serve a 5 bedroom single family residence. The system consists of a Valley Precast 1,250 gallon, single compartment tank with effluent screen and alarm placed on the outlet, followed by a 2,000 gallon Valley Precast 3-compartment recirculating/dose tank which will send wastewater to two, Advantex AX-20 pods for nitrification using an Orenco PF500512 pump. Nitrified effluent flows to the splitter valve (mode 3B) for recirculation to the 1,250 gallon first tank for denitrification then is dosed using an Orenco PF500512 pump to 576 square feet of soil treatment area (STA). The STA consists of two beds, each arranged with of three rows of 8 Infiltrator Quick 4 Plus Standard chambers for a total of 48 chambers. 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 VCOM-AX20B2) 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. 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 September 25, 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 Friday, September 25, 2020 1 September 11th, 2020 Ms. Claire Lewandowski, REHS Eagle County Environmental Health 590 Broadway Eagle, CO 81631 RE: Frost Creek - Onsite Wastewater Treatment System Design – Lot 60, Eagle County, CO Dear Claire: JVA Inc. (JVA) has prepared a design of an onsite wastewater treatment system (OWTS) to serve Lot 60 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 2019 annual Water Quality Monitoring Report prepared by Wright Water Engineers documents exceedances of the 85th percentile background concentrations during sampling events in 2019. The report states the following ‘The trends of water quality parameters seen throughout the sampling of groundwater and surface water at the Frost Creek PUD have not reflected a marked upward increase in concentrations of the sampled parameters. As more homes are constructed on the Frost Creek PUD during 2020, the surface water and groundwater sampling location will continue to be monitored’ Sincerely, JVA, INCORPORATED By: _______________________ Simon Farrell, P.E. Project Manager, Associate Attachment A - OWTS design – Lot 60 Attachment B - Visual and Tactile Soil Evaluation Attachment C - Discharge pump calculations FROST CREEK LOT 60 ONSITE WASTEWATER TREATMENT SYSTEM EAGLE COUNTY, COLORADO PERMIT SET SEPTEMBER 2020 Set No._______ JVA, Inc.1319 Spruce Street www.jvajva.com Boulder, CO 80302 303.444.1951 Boulder ● Fort Collins ● Winter Park Glenwood Springs ● Denver 09/11/2020 LEGEND, NOTES AND ABBREVIATIONSG0.1 REVISION DESCRIPTIOND'WNDES'DDATENO.DESIGNED BY: DRAWN BY: CHECKED BY: JOB #: DATE: © JVA, INC.FROST CREEKLOT 60 OWTSEAGLE, COLORADOSHEET NO. 1037.14e SEPTEMBER 2020 SAF AR/JNG AR JVA, Inc.1319 Spruce Street www.jvajva.com Boulder, CO 80302 303.444.1951 Boulder ● Fort Collins ● Winter Park Glenwood Springs ● Denver 09/11/2020 7253.87 7251.50 7247.64 7243.45 7239.18 7235.47 7231.46 7227.47 7223.87 7228.58 7228.52 7228.64 7229.11 CIVIL SITE PLANC1.0 REVISION DESCRIPTIOND'WNDES'DDATENO.DESIGNED BY: DRAWN BY: CHECKED BY: JOB #: DATE: © JVA, INC.FROST CREEKLOT 60 OWTSEAGLE, COLORADOSHEET NO. 1037.14e SEPTEMBER 2020 SAF AR/JNG AR JVA, Inc.1319 Spruce Street www.jvajva.com Boulder, CO 80302 303.444.1951 Boulder ● Fort Collins ● Winter Park Glenwood Springs ● Denver 09/11/2020 TREATMENT SYSTEM AND SITE DETAILSCD1.0 REVISION DESCRIPTIOND'WNDES'DDATENO.DESIGNED BY: DRAWN BY: CHECKED BY: JOB #: DATE: © JVA, INC.FROST CREEKLOT 60 OWTSEAGLE, COLORADOSHEET NO. 1037.14e SEPTEMBER 2020 SAF AR/JNG AR JVA, Inc.1319 Spruce Street www.jvajva.com Boulder, CO 80302 303.444.1951 Boulder ● Fort Collins ● Winter Park Glenwood Springs ● Denver 09/11/2020 SOIL TREATMENT AREA DETAILSCD1.1 REVISION DESCRIPTIOND'WNDES'DDATENO.DESIGNED BY: DRAWN BY: CHECKED BY: JOB #: DATE: © JVA, INC.FROST CREEKLOT 60 OWTSEAGLE, COLORADOSHEET NO. 1037.14e SEPTEMBER 2020 SAF AR/JNG AR JVA, Inc.1319 Spruce Street www.jvajva.com Boulder, CO 80302 303.444.1951 Boulder ● Fort Collins ● Winter Park Glenwood Springs ● Denver 09/11/2020 September 11, 2020 Ms. Claire Lewandowski, REHS Eagle County Environmental Health 590 Broadway Eagle, CO 81631 RE: Frost Creek Lot 60 – Site and Soil Investigation Report for an Onsite Wastewater Treatment System (OWTS) JVA Job No. 1037.14e Dear Claire: Enclosed in this report are the results of the site and soil evaluation for Lot 60’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 8, 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. Results from the HP Geotech report showed that Test Hole A had a topsoil from zero to six inches deep, then a clay layer to four feet, and a gravel-clay layer from four to eight feet deep. Test Hole B had a topsoil from zero to six inches deep, then a clay layer to four feet deep, and a gravel-clay layer from four to eight feet deep. No groundwater was encountered in either test holes. SITE VISIT AND SOIL EVALUATION A site visit and soil evaluation were conducted on November 8, 2019. 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 from west to east. The dominant vegetation at the proposed OWTS consists of native grasses. 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 locations identified in the Permit Documents. As seen in Table 1 below, soil morphology for both Soil Profile Hole One and Two from zero to one feet deep was consistent with a Soil Type 3, and from one to eight feet deep was Soil Type 2. No redoximorphic features, indicating seasonally high ground water, were found in either holes. Figures 1 through 4 below show the soil profile holes and corresponding morphology. Therefore, Soil Type 2 was identified as the soil type. Frost Creek Lot 60 Site and Soil Investigation 9/11/20 2 of 2 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 0% retained on 2 mm sieve Sandy Clay Loam Blocky Moderate 3 1 – 8 0% retained on 20 mm sieve 0% retained on 2 mm sieve Silt Loam Blocky Moderate 2 2 0 – 1 0% retained on 20 mm sieve 0% retained on 2 mm sieve Sandy Clay Loam Blocky Moderate 3 1 – 8 0% retained on 20 mm sieve 0% retained on 2 mm sieve Silt Loam Blocky Moderate 2 Figure 1 – Profile Hole One Figure 2 – Profile Hole One Soil Morphology Figure 3 – Profile Hole Two Figure 4 – Profile Hole Two Soil Morphology Sincerely, JVA, INCORPORATED By: _______________________ James Cochran, P.E. Project Engineer Job Name: Frost Creek Lot 60 Job Number: 1037.14e Date: 9/9/2020 By: JNG Line Variable Description Value Unit Note Lateral Distribution Piping Nlaterals Number of Laterals being feed by one pump cycle = 6.0 -- Llateral Lateral Length = 35 ft Orifice Spacing = 2.0 ft Manual Input Norifices Number of Orifices per Lateral = 18 -- Orifice Discharge and Total Flow Corifice Orifice Discharge Coefficient = 0.63 -- Sharp Edge Dorifice Diameter of Orifice = 0.13 in 1/8'' diameter orifice g Acceleration due to Gravity = 32.2 ft/s2 hn Residual Head at last Orifice = 4.22 ft Chosen value. Qn Discharge from Single Orifice = 0.40 gpm = 2.45Corfice·(Dorfice)2·(2ghn)0.5 Qlateral Flow into Each Lateral = 6.96 gpm = Qn x Norifice Qtotal Total Flow into Soil Treatment Area = 41.7 gpm = Qlateral x Nlaterals Headloss in Lateral Distribution Piping (Hazen-Williams) Clateral Hazen-Williams Coefficient = 150 -- For PVC dLateral Lateral Inside Diameter = 1.59 in For 1.5'' SCH 40 hlateral Headloss due to Friction in Lateral = 0.13 ft = 10.5Llateral·(Qlateral/Clateral)1.85·(dlateral)-4.87 hf-lateral Actual Headloss due to Friction in Lateral = 0.043 ft = 1/3 x hlateral (Accounting for Orifices) Headloss in Manifold (Hazen-Williams) Lmanifold Length of Manifold = 9 ft Same as the STA Max Width dmanifold Manifold Inside Diameter = 1.59 in For 1.5'' SCH 40 Cmanifold Hazen-Williams Coefficient = 150 -- For PVC hmanifold Headloss due to Friction in Manifold = 0.92 ft = 10.5Lmanifold·(Qtotal/Cmanifold)1.85·(dmanifold)-4.87 hf-manifold Actual Headloss due to Friction in Manifold = 0.31 ft = 1/3 x hmanifold (Accounting for Orifices) Headloss in Delivery Piping (Hazen-Williams) Lpipe Length of Delivery Pipe = 25 ft From Dosing chamber to manifold dpipe Delivery Pipe Inside Diameter = 1.59 in For 1.5'' SCH 40 Cpipe Hazen-Williams Coefficient = 150 -- For PVC Pipe hf-pipe Headloss due to Friction in Pipe = 2.57 ft = 10.5Lpipe·(Qtotal/Cpipe)1.85·(dpipe)-4.87 Total Dynamic Head (Hazen-Williams) hf-fittings Headloss due to Fittings = 2.88 ft One 90 deg bend to STA. Six 90 deg bends to laterals Headloss through Automatic Distirbuting Valve = 23.00 ft hs Static Head = 3.50 ft Max Elevation difference (typically in tank or to ADV) TDH Total Dynamic Head = 36.52 ft = hs + hf-fittings + hf-pipe + hf-manifold + hf-lateral + hn Volume of pipes Delivery Pipe (drainback to tank) = 3 gal = ((3.14/4)*(dpipe/12)2*(Lpipe))*7.48 STA Laterals = 22 gal = ((3.14/4)*(dpipe/12)2*(Lpipe))*7.49 Total Volume = 24 gal Duty Point Flowrate =42 gpm Total Dynamic Head =37 ft HUNTERS VIEW OWTS 6 (Lots 114 115 116) PUMP CALCULATIONS FC Lot 60 Pump Calculation - Pump Design Calculations Page 1 of 1 INSPECTION WORKSHEET (EAGLE AREA - 440 FROST CREEK - 513314) FOR EAGLE COUNTY GOVERNMENT OWTS-019702-2020Case Number:Case Module:Permit Management 03/09/2022 ApprovedInspection Status:Inspection Date: OWTS Final InspectionInspection Type:Inspector: Job Address:Parcel Number:440 Frost Creek Dr Eagle Area, CO 210925302007 Company Name NameContact Type Contractor Defina Construction, INC Gary Defina Engineer JVA Inc Simon Farrell Owner Ken and Mamie Jones CommentsPassedChecklist Item True This system is an Advantex treating at TL3N and considered higher level treatment. Higher Level Treatment System - Higher Level Treatment System (when applicable) True A Valley Precast 1,250 gallon, single compartment tank with effluent screen and alarm placed on the outlet, followed by a 2,000 gallon Valley Precast 3-compartment recirculating/dose tank which will send wastewater to two, Advantex AX-20 pods for nitrification using an Orenco PF500512 pump was used. Septic Tank - Septic Tank True Received 3/8/2022 from JVA Inc.Record Drawing - Record Drawing True Received 3/8/2022 from JVA Inc.Record Photos - Record Photos True Received 9/22/2020 from JVA Inc.Site and Soil - Site & Soil True Received 3/8/2022 from JVA Inc.Final Certification Letter - Final Certification Letter True Received 9/22/2020 from JVA Inc.General Plan - General Plan True The STA consists of two beds, each arranged with of three rows of 8 Infiltrator Quick 4 Plus Standard chambers for a total of 48 chambers. Distribution lateral details, along with orifice size, spacing and orientation are on the design drawing. Soil Treatment Area (STA) - Soil Treatment Area (STA) True Defina Construction was the licensed installer.Identification of Systems Contractor - Identification of Systems Contractor March 09, 2022 Page 1 of 1P.O. Box 179, 500 Broadway, Eagle, CO 81631-0179 March 4, 2022 Claire Lewandowski, REHS, Environmental Health Specialist III Eagle County Environmental Health 500 Broadway Street Eagle, CO 81631 RE: Onsite Wastewater Treatment System Final Certification – 440 Frost Creek Drive, Lot 60 Dear Claire: The Onsite Wastewater Treatment System (OWTS) covered under Eagle County Permit No. OWTS-019702-2020 was installed by Defina Construction, Inc for 440 Frost Creek Drive. This letter certifies that the construction of the OWTS was completed as per the approved design plan. The final record drawings from JVA, 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. Although all unit processes function properly, the system cannot currently be remotely monitored via Vericomm due to lack of internet infrastructure. CenturyLink is aware of the issue and is upgrading the main panel in Eagle Spur. In the interim Frost Creek will have a more concerted onsite effort by stopping biweekly to check the OWTS and respond to local visual and audio alarms. Sincerely, JVA, INCORPORATED By: ________________________ Simon Farrell, P.E. Project Manager, Associate Enclosure: Attachment A – Record Drawings Attachment B – Construction Photographs CC: Julie Gustavson, JVA ATTACHMENT A – RECORD DRAWINGS ATTACHMENT B – CONSTRUCTION PHOTOGRAPHS Lot 60