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HomeMy WebLinkAbout436 Paseo - 239127304005 (2)Environmental Health Department P.O. Box 179 500 Broadway Eagle, CO 81631-0179 Phone: (970) 328-8730 Fax: (970) 328-7185 Permit Permit No. OWTS-020651-2021 Permit Type: OWTS Permit Work Classification: Major Repair Permit Status: Active Issue Date: 2/26/2021 Expires: 6/28/2021 On-Site Wastewater Treatement System Project Address Parcel Number 436 PASEO, EL JEBEL AREA,239127304005 Owner Information Address Michael Armstrong 436 Paseo El Jebel, CO 81623 Phone: Cell: Email: Michael.armstrong436@comcast.net Inspections: For Inspections Call: (970) 328-8755 and call the Design Engineer Engineer Phone Email CBO Septic Consulting, Carla Ostberg (970) 309-0525 carla.osteberg@gmail.com Contractor License Number Phone Email Hagist Excavation, LLC tim@hagistx.com(970) 379-9726OWTSPL-000112-20 20 Permitted Construction / Details: Install the new system exactly as depicted in the updated CBO Inc design dated May 21st, 2021, stamped and signed May 26th, 2021 by Romeo Baylosis. The new system will be sized to accommodate the maximum daily flows for a 3 bedroom residence. This system was designed to replace the existing cesspool. This OWTS consists of 1 SDR35 PVC sewer line that will replace the existing cast iron sewer line outside of the foundation. An Infiltrator 1,000 gallon, two-compartment poly septic tank followed in series by an Infiltrator 500 gallon, single compartment poly pump chamber shall be used. An Orenco PF3005 pump and the Biotube ProPak Pump Package will be present in the 500 gallon tank with floats set to dose 85 gallons each pump cycle. Install the Automatic Distribution Valve (ADV) at the high point of the system and made accessible at grade. The ADV will alternate doses between two sets of laterals set on top of a 3ft deep sand filter in an 2ft over excavated bed 12' by 47'. 39" Geomat fabric media is to be installed over the distribution laterals. The mound must have a minimum 3:1 slope. Install distribution lateral orifice size, orifice shields, spacing, and flushing assemblies should be completed as designed. Inspection ports should be present at each corner of the bed. Gradation analysis must be submitted to Eagle County EH prior to installation to confirm that sand meets secondary sand media specifications. 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 the 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. 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 February 26, 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, June 1, 2021 1 Environmental Health Department P.O. Box 179 500 Broadway Eagle, CO 81631-0179 Phone: (970) 328-8730 Fax: (970) 328-7185 Permit Permit No. OWTS-020651-2021 Permit Type: OWTS Permit Work Classification: Major Repair Permit Status: Active Issue Date: 2/26/2021 Expires: 6/28/2021 On-Site Wastewater Treatement System Project Address Parcel Number 436 PASEO, EL JEBEL AREA,239127304005 Owner Information Address Michael Armstrong 436 Paseo El Jebel, CO 81623 Phone: Cell: Email: Michael.armstrong436@comcast.net Inspections: For Inspections Call: (970) 328-8755 and call the Design Engineer Engineer Phone Email CBO Septic Consulting, Carla Ostberg (970) 309-0525 carla.osteberg@gmail.com Contractor License Number Phone Email Permitted Construction / Details: Install the new system exactly as depicted in the CBO Septic Consulting design dated March 3rd, 2021, stamped and signed March 15th, 2021 by Romeo Baylosis. The new system will be sized to accommodate the maximum daily flows for a 3 bedroom residence. This system was designed to replace the existing cesspool. Two 8 foot deep test pits must be excavate prior to the installation of the STA to verify the soil types present. Eagle County Environmental Health must be contacted to verify this at the time of excavation. This OWTS consists of 1 SDR35 PVC sewer line that will replace the existing cast iron sewer line outside of the foundation. An Infiltrator 1,000 gallon, 2-compartment poly septic tank and an Infiltrator 500 gallon, single compartment poly pump chamber shall be used. The pump and the Biotube ProPak Pump Package will be present in the 500 gallon tank. An Orenco PF3005 pump will be used. The floats will be set to dose 85 gallons each pump cycle. An ADV located at the high point of the system, made accessible at grade, will alternate doses between two sets of distribution laterals to a 3 feet unlined sand filter bed that measures 12' by 47'. Inspection ports should be present at each corner of the bed. Gradation analysis must confirm that sand is secondary sand media. A licensed installer has not been identified. No person shall install, renovate, or repair an OWTS in Eagle County (EC) without a valid EC Systems Contractor License. Any person that conducts a business as a systems contractor without having obtained a valid license section commits a Class 1 petty offense as defined in section 18-1.3-503, C.R.S. Please notify the department when an installer is identified, prior to installation of the OWTS. 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 the 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. Wednesday, March 17, 2021 1 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 February 26, 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 Wednesday, March 17, 2021 2 Environmental Health Department P.O. Box 179 500 Broadway Eagle, CO 81631-0179 Phone: (970) 328-8730 Fax: (970) 328-7185 Permit Permit No. OWTS-020651-2021 Permit Type: OWTS Permit Work Classification: Major Repair Permit Status: Active Issue Date: 2/26/2021 Expires: 6/28/2021 On-Site Wastewater Treatement System Project Address Parcel Number 436 PASEO, EL JEBEL AREA,239127304005 Owner Information Address Michael Armstrong 436 Paseo El Jebel, CO 81623 Phone: Cell: Email: Michael.armstrong436@comcast.net Inspections: For Inspections Call: (970) 328-8755 and call the Design Engineer Engineer Phone Email Contractor License Number Phone Email RotoRooter marcus@rotorooternow.co m (970) 210-3582OWTSPL-000121-20 21 Permitted Construction / Details: Emergency use permit installation requirements: Install the tank exactly as required by the Eagle County Public Health Agency (ECPHA) OWTS Regulations, in order to provide emergency use for the detention of sewage generated by the existing 3 bedroom residence until the time when the major repair and replacement of the malfunctioning system can be completed. The owner has 90 days to submit an OWTS design for the permit and installation of a complete OWTS in compliance with ECPHA OWTS Regulations. The emergency use permits the installation of a new 1,000 gallon two-compartment septic tank, which must be on the CDPHE Water Quality COntrol Department approved tank list (attached). The tank must be connected to the residence by a 4 inch sewer pipe, SDR35 strength or greater, with a clean-out within five 5ft of the outside of the building, between to the tank and the building. The septic tank must be installed level, with the top of the tank no more than four feet below grade, with water tight risers that extend the manholes to grade. The tank must be equipped with an audible and visual high water alarm, with the float set at 75% the tanks capacity. Installation of the tank and components must be conducted by an Eagle County licensed installer. Contact Eagle County Environmental Health in advance to request and inspection prior to backfilling any component of the OWTS. 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 February 26, 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, February 26, 2021 1 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-526517-2023 Permit Number: OWTS-020651-2021 Inspection Date: 10/19/2023 Inspector: Permit Type: OWTS Permit Inspection Type: OWTS Final Inspection Work Classification: Major RepairOwner:Michael Armstrong Job Address:436 PASEO IVR Pin Number:192308 EL JEBEL AREA, CO Project:<NONE> Parcel Number:239127304005 Contractor:Phone: (970) 379-9726 / Cell: (970) 379-9726Hagist Excavation, LLC Inspection Status: Approved Inspection Notes Inspector Comments Added Item: Septic Tank A 1000-gallon, two-compartment Infiltrator® poly septic tank with an effluent filter was installed. An additional 500-gallon Infiltrator® poly pump chamber with an Orenco® Biotube Pump Vault and an Orenco® PF3005 pump was also installed. Added Item: Record Drawing Received 10/19/2021 from CBO Inc. Added Item: Record Photos Received 10/19/2021 from CBO Inc. Added Item: Site and Soil Received 3/17/2021. Added Item: Final Certification Letter Received 10/19/2021 from CBO Inc. Added Item: General Plan Received 3/17/2021. Added Item: Soil Treatment Area (STA) Thursday, October 19, 2023 For more information visit: http://www.eaglecounty.us Page 1 of 2 A partially mounded, 12’ x 47’ unlined sand filter with a minimum of 3-feet of sand filter material was installed. The bed consists of two laterals connected with a level 1.25-inch diameter manifold. Laterals used to disperse the effluent are 1.25-inches in diameter with 5/32-inch diameter orifices facing down, spaced 3-feet on center, installed on the GeoMat™ with the filter fabric over the laterals. Laterals are placed 2-feet from the edges of the bed and 2-feet between the center laterals. Four 39” wide GeoMat™ sheets were placed on the 12-foot wide bed. Added Item: Identification of Systems Contractor Hagist Excavation was the licensed installer. Thursday, October 19, 2023 For more information visit: http://www.eaglecounty.us Page 2 of 2 CBO Inc. 129 Cains Lane Carbondale, CO 81623 970.309.5259 carla.ostberg@gmail.com September 19, 2023 Project No. C1595 Mike Armstrong michael.armstrong436@comcast.net Onsite Wastewater Treatment System (OWTS) Installation Observations 436 Paseo Eagle County, Colorado Permit OWTS-020651-2021 Mike, CBO Inc. observed the installation of the onsite wastewater treatment system (OWTS) on June 14, 2021 and June 17, 2023 for the subject property. Hagist Excavating installed the system. The OWTS design is based on 3-bedrooms. An average daily wastewater flow of 450 GPD was used. The existing cast iron sewer line was replaced outside of the foundation with a 4-inch diameter SDR-35 PVC sewer line with a double-sweep clean out and minimum 2% grade to the new septic tank. The system installation included a 1000-gallon, two-compartment Infiltrator® poly septic tank with an effluent filter installed on the outlet tee. An additional 500-gallon Infiltrator® poly pump chamber with an Orenco® Biotube Pump Vault and an Orenco® PF3005 pump was also installed. The floats were set to dose approximately 85 gallons each pump cycle. Effluent filters need to be cleaned annually, or as needed. Valley Precast out of Buena Vista performed start-up of the pumping system. Effluent is pumped through a 1.25-inch diameter pump line from the pump chamber to an Orenco® automatic distributing valve (ADV), model 6402. The ADV was placed a high point in an insulated riser with access from grade. Effluent is pressure dosed through to a partially mounded, 12’ x 47’ unlined sand filter with a minimum of 3- feet of sand filter material. A gradation of the sand filter material is enclosed. There are four distribution laterals on the bed, with two laterals connected with a level 1.25-inch diameter manifold. Laterals used to disperse the effluent are 1.25-inches in diameter with 5/32-inch diameter orifices facing down, spaced 3-feet on center, installed on the GeoMat™ with the filter fabric over the laterals. Laterals are placed 2-feet from the edges of the bed and 2-feet between the center laterals. Four 39” wide GeoMat™ sheets were placed on the 12-foot wide bed. Each 1.25-inch diameter lateral ends in a sweeping ell facing up with a ball valve for flushing. Laterals were covered by the soil separation fabric and at least 1-foot of topsoil. Inspection ports were placed into the sand filter material on each corner of the beds. It should be noted that 1.25” diameter Schedule 40 pipe was used because there was not 1.5” diameter Schedule 40 pipe available at the time of installation. The mound has minimum 3:1 slope (horizontal:vertical) downgradient to the south and ties into the hillside upgradient to the north. The OWTS was generally installed according to specifications. This observation is not a guarantee of workmanship and/or parts and materials. CBO Inc. should be notified if changes are made to the OWTS in the future. Any additional OWTS construction must be according to the county regulations. LIMITS: Observations are limited to components that are visible at the time of the inspection. The installer must have documented and demonstrated knowledge of the requirements and regulations of the county in which they are working. The quality of the installation is dependent on the expertise of the installer, soil type, and weather conditions. Please call with questions. Sincerely, CBO Inc. Carla Ostberg, MPH, REHS Clean out beyond deck Control panel Control panel grading over field Flushing valves Inspection ports in corners Flushing valves Grading mounded area Pump chamber (effluent filter present in this chamber) Effluent filter on outlet of primary septic tank View of clean out before septic tank View of primary septic tank lids and pump chamber lid / clean out and inlet tee lid Inlet tee Pump chamber (6.17.2023) 304 pump cycles after start up June 2021 / 21.52 hours Control panel under deck Inlet tee Outlet tee with effluent filter Pump chamber ADV Flushing Valves Pump Selection for a Pressurized System - Single Family Residence Project 436 Paseo / Armstron / 5-20-21 revisions 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 1.25 145 40 1.25 6402 5 40 1.25 25 3 40 1.25 4 45 40 1.25 5/32 3 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 0.68 32 21.8 2 2.6 4.7 4.7 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 3.3 8.9 4.7 0.3 0.1 0.3 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 11.3 0.4 0.2 6.9 11.3 7.6 gals gals gals gals gals gals Minimum Pump Requirements Design Flow Rate Total Dynamic Head 21.8 47.6 gpm feet 0 5 10 15 20 25 30 35 40 0 50 100 150 200 250 300 Net Discharge (gpm) PumpData PF3005 High Head Effluent Pump 30 GPM, 1/2HP 115/230V 1Ø 60Hz, 200V 3Ø 60Hz PF3007 High Head Effluent Pump 30 GPM, 3/4HP 230V 1Ø 60Hz, 200/460V 3Ø 60Hz PF3010 High Head Effluent Pump 30 GPM, 1HP 230V 1Ø 60Hz, 200/460V 3Ø 60Hz PF3015 High Head Effluent Pump 30 GPM, 1-1/2HP 230V 1Ø 60Hz, 200/230/460V 3Ø 60Hz Legend System Curve: Pump Curve: Pump Optimal Range: Operating Point: Design Point: Environmental Health Department P.O. Box 179 500 Broadway Eagle, CO 81631-0179 Phone: (970) 328-8730 Fax: (970) 328-7185 Permit Permit No. OWTS-020651-2021 Permit Type: OWTS Permit Work Classification: Major Repair Permit Status: Active Issue Date: 2/26/2021 Expires: 6/28/2021 On-Site Wastewater Treatement System Project Address Parcel Number 436 PASEO, EL JEBEL AREA,239127304005 Owner Information Address Michael Armstrong 436 Paseo El Jebel, CO 81623 Phone: Cell: Email: Michael.armstrong436@comcast.net Inspections: For Inspections Call: (970) 328-8755 and call the Design Engineer Engineer Phone Email CBO Septic Consulting, Carla Ostberg (970) 309-0525 carla.osteberg@gmail.com Contractor License Number Phone Email Hagist Excavation, LLC tim@hagistx.com(970) 379-9726OWTSPL-000112-20 20 Permitted Construction / Details: Install the new system exactly as depicted in the updated CBO Inc design dated May 21st, 2021, stamped and signed May 26th, 2021 by Romeo Baylosis. The new system will be sized to accommodate the maximum daily flows for a 3 bedroom residence. This system was designed to replace the existing cesspool. This OWTS consists of 1 SDR35 PVC sewer line that will replace the existing cast iron sewer line outside of the foundation. An Infiltrator 1,000 gallon, two-compartment poly septic tank followed in series by an Infiltrator 500 gallon, single compartment poly pump chamber shall be used. An Orenco PF3005 pump and the Biotube ProPak Pump Package will be present in the 500 gallon tank with floats set to dose 85 gallons each pump cycle. Install the Automatic Distribution Valve (ADV) at the high point of the system and made accessible at grade. The ADV will alternate doses between two sets of laterals set on top of a 3ft deep sand filter in an 2ft over excavated bed 12' by 47'. 39" Geomat fabric media is to be installed over the distribution laterals. The mound must have a minimum 3:1 slope. Install distribution lateral orifice size, orifice shields, spacing, and flushing assemblies should be completed as designed. Inspection ports should be present at each corner of the bed. Gradation analysis must be submitted to Eagle County EH prior to installation to confirm that sand meets secondary sand media specifications. 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 the 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. 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 February 26, 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, June 1, 2021 1 June 14, 2021 To Whom It May Concern: We have been to the following site(s): 436 Paseo Dr, El Jebel CO Pump startup has been completed. We have verified that the system was started properly. The System went through several cycles with no issues. Sincerely, Travis Nall Service Manager 33 Four Wheel Drive Road Carbondale, CO 81623 970.309.5259 carla.ostberg@gmail.com May 21, 2021 Project No. C1595 Michael Armstrong Michael.amrstrong@comcast.net Onsite Wastewater Treatment System Design 3-Bedroom Residence 436 Paseo Eagle County, Colorado Michael, CBO Inc. completed an onsite wastewater treatment system (OWTS) design for the subject residence. The property is located outside of Basalt, in an area where OWTSs are necessary. Original design documents dated May 3, 2021 should be discarded and replaced with these. The soil treatment area (STA) has been modified into a partially mounded system. Legal Description: Subdivision: ASPEN MESA ESTATES FIL 1, LOT: 51 Parcel ID: 2391-273-04-005 SITE CONDITIONS A 3-bedroom, single-family residence presently exists and is utilizing an existing cesspool. The residence was originally constructed in 1971 according to the Eagle County Assessor’s website. We believe the cesspool and piping was installed with the original construction of the residence. The residence is served potable water by a community water system. The water line enters the property from the north along the driveway. No OWTS component will come within 25-feet of the water line. The property slopes to the south at approximately 20-25%. The proposed soil treatment area (STA) is a relatively flat area upgradient of the detached garage. Page 2 There should be no traffic or staging of material over the future STA site to avoid compaction of soils prior to construction of the STA. SUBSURFACE The subsurface was investigated on May 18, 2021 by digging one soil profile test pit excavation (Test Pit). A visual and tactile soil analysis was completed by Carla Ostberg.1 The materials encountered in the Test Pit #1 consisted of medium brown topsoil to 1-foot, underlain by light brown to whitish calcareous clay matrix and rock to a maximum depth explored of 2.0-feet. A ledge rock was encountered and digging beyond 2.0-feet was determined to not be feasible without either a larger machine or use of a rock hammer. No groundwater was encountered. We have determined a limiting layer is present at approximately 2.0-feet below grade. STA sizing is based on Soil Type R-0. A partially mounded, unlined sand filter with a minimum of 3.0-feet of sand filter material is proposed. A long term acceptance rate (LTAR) of 0.8 gallons per square foot will be used to design the OWTS. 1 Carla Ostberg holds a Certificate of Attendance and Examination from the CPOW Visual and Tactile Evaluation of Soils Training. Page 3 DESIGN SPECIFICATIONS The existing cesspool will be abandoned in place by pumping any liquid and filling the void with onsite soils. Design Calculations: Average Design Flow = 75 GPD x 2 people/bedroom x 3 Bedrooms = 450 GPD LTAR = 0.8 GPD/SF 450 GPD / 0.8 GPD/SF = 563 SF 12’ x 47’ over-excavated, partially mounded sand filter The OWTS design is based on 3-bedrooms. An average daily wastewater flow of 450 GPD will be used. The existing cast iron sewer line must be replaced outside of the foundation with a 4-inch diameter SDR35 PVC sewer line with a double-sweep clean out and minimum 2% grade to the new septic tank. For the purposes of this OWTS design, Benchmark Elevation has been established as 100’ at the elevation of the existing sewer line exiting the residence. Without a topographic survey, we are estimating elevations. CBO Inc. should be notified of any discrepancies or problems with grade elevations of proposed components during installation of the OWTS. OWTS Component Minimum Elevation Primary Tank Inlet Invert Approx. 21’ horizontal distance / min. 2% fall to septic tank / min. 5.25-inch fall to septic tank Automatic Distributing Valve Approx. 145’ horizontal distance/ min. 1% rise for drain back / min. 18.125” rise to ADV Infiltrative Surface Approx. 5’ horizontal distance / min. 1% fall to infiltrative area / min. 0.625” fall to infiltrative surface The system installation will include a 1000-gallon, two-compartment Infiltrator® poly septic tank with an effluent filter installed on the outlet tee. An additional 500-gallon Infiltrator® poly pump chamber with an Orenco® Biotube Pump Vault and an Orenco® PF3005 pump must also be installed. The floats should be set to dose approximately 85 gallons each pump cycle, allowing approximately 15 gallons of drain back after each pump cycle. A pump curve is enclosed. The control panel for the pump must be located within line of sight of the septic tank. We recommend Valley Precast out of Buena Vista be contracted for start-up of the pumping system. Pump Table Dose Range Max = 127.5 gal. (450 GPD x 25% + 15 gal drain back) Min. 57 gal. (10.5 gal x 4) + 15 gal drain back Dose Setting 85 gallons/dose 15 gallons drain back (145’ / 1.5” diameter pump line) Float Separation 500-gallon Infiltrator® pump chamber 6.5” on/off float separation Pump Criteria 21.7 gallons per minute (GPM) 42.4 feet total dynamic head (TDH) *Elevations are based upon standard OWTS installation practices. Component elevations may change during installation due to site conditions. Effluent will be pumped through a 1.5-inch diameter pump line from the pump chamber to an Orenco® automatic distributing valve (ADV), model 6402. This pump line must have a minimum 1% grade for proper drain back into the tank after each pump cycle. The ADV must be placed a high point and be placed in an Page 4 insulated riser with access from grade. Screened rock must be placed below the ADV to support the ADV and to assure the clear pipes exiting the ADV remains visible for future inspection and maintenance. Effluent will be pressure dosed through to a partially mounded, 12’ x 47’ unlined sand filter with a minimum of 3-feet of sand filter material. Sand filter material must be clean, coarse sand, all passing a screen having four meshes to the inch. The sand must have an effective size between 0.25 and 0.60 mm. The uniformity coefficient must be 4.0 or less. Material meeting ASTM 33, for concrete sand, with one percent or less fines passing 200 mesh sieve may be used. There will be four distribution laterals on the bed, with two laterals connected with a level 1.5-inch diameter manifold. Laterals used to disperse the effluent Laterals must be 1.5-inches in diameter with 5/32-inch diameter orifices facing down, spaced 3-feet on center, installed on the GeoMat™ with the filter fabric over the laterals. Laterals should be placed 2-feet from the edges of the bed and 2-feet between the center laterals (See W3.0/Detail 1). Four 39” wide GeoMat™ must be placed on the 12-foot wide bed. All material associated with the GeoMat™ installation must be proprietary products associated with the GeoMat™, including orifice shields and geotextile fabric. Manufacturer instructions must be followed regarding installation of the GeoMat™. Each 1.5-inch diameter lateral must end in a sweeping ell facing up with a ball valve for flushing. Laterals must be covered by a soil separation fabric and at least 1-foot of topsoil or other suitable soil able to support vegetative growth. There shall be no cobble-sized (2.5”) or greater rock in final cover over the GeoMat™. Inspection ports must be placed into the sand filter material on each corner of the beds. The mound must have a minimum 3:1 slope (horizontal:vertical); therefore, the basal area will extend approximately 7.5 to 9.0-feet beyond the sand filter on the downhill end and approximately 6-feet on the uphill side (with a mound height of approximately 2.5 to 3.0-feet above native grade on the downhill side). Soils in the sloped perimeter areas of the mound must be well draining and able to support vegetative growth. This soil must be approved by this office prior to installation. The mound must be crowned in a manner to promote drainage off the STA. COMPONENT SPECIFICATIONS The component manufacturers are typical of applications used by contractors and engineers in this area. CBO Inc. must approve alternative components prior to installation of the OWTS. Requests must be submitted, in writing, to our office for approval prior to installation. Component technical data sheets are available upon request. COMPONENT MANUFACTURER MODEL NO. COMMENTS Septic Tank Infiltrator® Item # IM-1060-2CP 1000-gallon, 2- compartment poly septic tank Effluent Filter Orenco® 4-inch diameter, full size filter and housing Pump Tank Infiltrator® Item # IM-540-HH 500-gallon, single compartment poly pump chamber Pump Orenco® PF300511 ½ HP 120 Volt Biotube ProPak Pump Package Orenco® BPP30DD Vault, Filter, Control Panel (demand dose) Tank Risers and Lids Orenco® Double-walled PVC Risers and Lids (24” diameter) ADV Orenco® V6402A 1.5” Inlet and Outlets Page 5 ADV Riser and Lid Orenco® Double-walled PVC Risers and Lids (30” diameter) GeoMat™ Geomatrix Systems, LLC 188’ GeoMat™(39” sheets) Orifice Shields Geomatrix Systems, LLC 56 Orifice Shields Flushing Assembly Orenco® 1.5” diameter (2) 45° or 90° long sweep only (4 total) Construction must be according to Eagle County On-Site Wastewater Treatment System Regulations, the OWTS Permit provided by Eagle County Environmental Health Department, and this design. INSTALLATION CONTRACTOR CBO Inc. expects that the installer be experienced and qualified to perform the scope of work outlined in this design. The installer must review this design thoroughly and coordinate with our office in advance of installation. Any additional conditions in this design or county permit must be completed and documented prior to final approval of the OWTS installation. Communication between the installer and this office is expected throughout the installation. INSTALLATION OBSERVATIONS CBO Inc. must view the OWTS during construction. The OWTS observation should be performed before backfill, after placement of OWTS components. Septic tanks, distribution devices, pumps, dosing siphons, and other plumbing, as applicable, must also be observed. CBO Inc. should be notified 48 hours in advance to observe the installation. In an effort to improve the accuracy of the record drawing, we request that the installer provide a sketch of the installation, including path of the sewer lines, water line installation (if applicable), septic tank location, STA location, and measurements from building corners or another fixed objects on the property. This sketch is most easily provided on Sheet W2.0 of the OWTS Design Packet. Photographs of the installation and final cover are also requested to supplement our installation documentation. REVEGETATION REQUIREMENTS An adequate layer of good quality topsoil capable of supporting revegetation shall be placed over the entire disturbed area of the OWTS installation. 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 area. Until vegetation is reestablished, erosion and sediment control measures shall be implemented and maintained on site. The owner of the OWTS shall be responsible for maintaining proper vegetation cover. 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. Page 6 5-26-2021 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. ADDITIONAL CONSTRUCTION NOTES If design includes a pump, weep holes must be installed to allow pump lines to drain to minimize risk of freezing. The pump shall have an audible and visual alarm notification in the event of excessively high- water conditions and shall be connected to a control breaker separate from the high-water alarm breaker and from any other control system circuits. The pump system shall have a switch so the pump can be manually operated. Extensions should be placed on all septic tank components to allow access to them from existing grade. Backfill over the STA must be uniform and granular with no material greater than minus 3-inch. LIMITS: The design is based on information submitted. If soil conditions encountered are different from conditions described in report, CBO Inc. should be notified. All OWTS construction must be according to the county regulations. Requirements not specified in this report must follow applicable county regulations. The contractor should have documented and demonstrated knowledge of the requirements and regulations of the county in which they are working. Licensing of Systems Contractors may be required by county regulation. Please call with questions. Sincerely, CBO Inc. Reviewed By: Carla Ostberg, MPH, REHS Romeo A. Baylosis, PE Pump Selection for a Pressurized System - Single Family Residence Project C1595 / 436 Paseo 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 1.25 145 40 1.50 6402 5 40 1.50 25 3 40 1.50 4 45 40 1.50 5/32 3 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 0.68 32 21.7 2 1.2 3.4 3.4 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 3.3 4.2 4.7 0.1 0.0 0.1 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 15.3 0.5 0.3 9.5 15.3 10.4 gals gals gals gals gals gals Minimum Pump Requirements Design Flow Rate Total Dynamic Head 21.7 42.4 gpm feet 0 5 10 15 20 25 30 35 40 0 50 100 150 200 250 300 Net Discharge (gpm) PumpData PF3005 High Head Effluent Pump 30 GPM, 1/2HP 115/230V 1Ø 60Hz, 200V 3Ø 60Hz PF3007 High Head Effluent Pump 30 GPM, 3/4HP 230V 1Ø 60Hz, 200/460V 3Ø 60Hz PF3010 High Head Effluent Pump 30 GPM, 1HP 230V 1Ø 60Hz, 200/460V 3Ø 60Hz PF3015 High Head Effluent Pump 30 GPM, 1-1/2HP 230V 1Ø 60Hz, 200/230/460V 3Ø 60Hz Legend System Curve: Pump Curve: Pump Optimal Range: Operating Point: Design Point: Pump Selection for a Pressurized System - Single Family Residence Project 436 Paseo / Armstron / 5-20-21 revisions 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 1.25 145 40 1.25 6402 5 40 1.25 25 3 40 1.25 4 45 40 1.25 5/32 3 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 0.68 32 21.8 2 2.6 4.7 4.7 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 3.3 8.9 4.7 0.3 0.1 0.3 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 11.3 0.4 0.2 6.9 11.3 7.6 gals gals gals gals gals gals Minimum Pump Requirements Design Flow Rate Total Dynamic Head 21.8 47.6 gpm feet 0 5 10 15 20 25 30 35 40 0 50 100 150 200 250 300 Net Discharge (gpm) PumpData PF3005 High Head Effluent Pump 30 GPM, 1/2HP 115/230V 1Ø 60Hz, 200V 3Ø 60Hz PF3007 High Head Effluent Pump 30 GPM, 3/4HP 230V 1Ø 60Hz, 200/460V 3Ø 60Hz PF3010 High Head Effluent Pump 30 GPM, 1HP 230V 1Ø 60Hz, 200/460V 3Ø 60Hz PF3015 High Head Effluent Pump 30 GPM, 1-1/2HP 230V 1Ø 60Hz, 200/230/460V 3Ø 60Hz Legend System Curve: Pump Curve: Pump Optimal Range: Operating Point: Design Point: