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Home My WebLink About922 Mayne St - 211108402003Environmental Health Department P.O. Box 179 500 Broadway Eagle, CO 81631-0179 Phone: (970) 328-8730 Fax: (970) 328-7185 Permit Permit No. OWTS-017563-2019 Permit Type: OWTS Permit Work Classification: New Permit Status: Active Issue Date: 10/4/2019 Expires: 2/3/2020 On-Site Wastewater Treatement System Project Address Parcel Number 922 MAYNE ST, GYPSUM AREA,211108402003 Owner Information Address David Kudel PO Box 219 Gypsum, CO 81637 Phone: (970) 390-3555 Cell: (970) 390-3555 Email: dkudel142@gmail.com Inspections: For Inspections Call: (970) 328-8755 and call the Design Engineer Engineer Phone Email KUMAR & ASSOCIATES, Dave Young (970) 945-7988 dyoung@kumarusa.com Contractor License Number Phone Email The Reynolds Corporation sean.reynolds.corp@gmail .com (970) 904-5226OWTSPL-000031-20 19 Permitted Construction / Details: Install the OWTS exactly as depicted in the HP Kumar design stamped, signed, and dated January 11, 2019 by David A. Young, PE. The system is designed to serve a 3 bedroom single family residence. The OWTS consists of a 1,000 gallon two compartment septic tank with an effluent filter in the outlet tee, followed by two shallow serially connected trenches, each with 17 Infiltrator Quick4 Plus Standard chamber, for a total of 34 chambers. Install inspection ports on both ends of each trench. Maintain all setbacks and elevations in accordance with regulations. The exact location of the proposed waterline was not know at the time of design, be sure to stake water line prior to installation. If waterline encroaches upon the minimum required setback contact the design engineer for recommendations. 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 October 04, 2019 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, October 4, 2019 1 November 26, 2019 Mr. Dave Kudel PO Box 219 Edwards, CO 81632 dkudel@gmail.com RE: Final approval of the: Septic System Installation, OWTS-017563-2019 Property location: 922 Mayne Street, Gypsum, Eagle County, Colorado Mr. Kudel, This letter is to inform you that the above-referenced permit has been inspected, approved, and finalized. This OWTS major repair permit was approved to serve a total of three (3) bedrooms. 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 im mediately 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 5020 County Road 154 Glenwood Springs, CO 81601 phone: (970) 945-7988 fax: (970) 945-8454 email: kaglenwood@kumarusa.com www.kumarusa.com Office Locations: Denver (HQ), Parker, Colorado Springs, Fort Collins, Glenwood Springs, and Summit County, Colorado November 20, 2019 Dave Kudel P. O. Box 219 Edwards, Colorado 81632 (dkudel@gmail.com) Project No. 18-7-706.02 Permit No. OWTS-017563-2019 Subject: Certification of Onsite Wastewater Treatment System, Proposed Residence, Lot 15, Horse Pasture, 922 Mayne Street, Gypsum, Eagle County, Colorado Dear Dave: A representative of Kumar & Associates observed the installation of the Onsite Wastewater Treatment System (OWTS) for the residence currently under construction at the subject site as required by the Eagle County Environmental Health Department. Our observations and recommendations are presented in this report. The services are supplemental to H-P/Kumar’s (now Kumar & Associates) agreement for professional services to you dated November 26, 2018. We previously designed the OWTS for the residence as submitted in our report dated January 11, 2019, Project No. 18-7-706.02. The system was designed for three bedrooms. The OWTS was installed under Eagle County Permit Number OWTS-017563-2019 by Reynolds Corporation. We performed our evaluation on November 11, 2019. The OWTS components observed included: sewer line, cleanout, septic tank, effluent line, and soil treatment area (STA) and the locations of these components. The installation and locations of the system components were verified as shown on Figure 1. Pictures of the OWTS components made during the site visit are included with this report. The distance locations to the septic tank shown on Figure 1 were made by taping. It is our opinion that the OWTS was installed in general conformance with the above referenced design. The observations and recommendations presented above are based on our site observations and our experience in the area. We make no warranty either express or implied. Alterations to the OWTS PHOTOGRAPH LOG PROPOSED RESIDENCE LOT 15, HORSE PASTURE 922 MAYNE STREET GYPSUM, EAGLE COUNTY, COLORADO Project No. 18-7-706.02 Photograph 1: Cleanout and sewer line exiting residence. Photograph 2: Valley Precast two-chamber 1,000 gallon septic tank. OWTS PHOTOGRAPH LOG PROPOSED RESIDENCE LOT 15, HORSE PASTURE 922 MAYNE STREET GYPSUM, EAGLE COUNTY, COLORADO Project No. 18-7-706.02 Photograph 3: Septic tank, effluent line and soil treatment area (STA). Photograph 4: Septic tank with effluent filter in outlet tee and effluent line exiting. OWTS PHOTOGRAPH LOG PROPOSED RESIDENCE LOT 15, HORSE PASTURE 922 MAYNE STREET GYPSUM, EAGLE COUNTY, COLORADO Project No. 18-7-706.02 Photograph 5: Soil treatment area (STA) and observation ports. Photograph 6: Soil treatment area (STA) with observation ports and serial connection between trenches. 5020 County Road 154 Glenwood Springs, CO 81601 Phone: (970) 945-7988 Fax: (970) 945-8454 Email: hpkglenwood@kumarusa.com Office Locations: Parker, Glenwood Springs, and Silverthorne, Colorado ONSITE WASTEWATER TREATMENT SYSTEM DESIGN PROPOSED RESIDENCE LOT 15, HORSE PASTURE 922 MAYNE STREET GYPSUM, COLORADO PROJECT NO. 18-7-706.02 JANUARY 11, 2018 PREPARED FOR: DAVE KUDEL P. O. BOX 219 EDWARDS, COLORADO 81632 dkudel@gmail.com Project No. 18-7-706.02 TABLE OF CONTENTS INTRODUCTION ........................................................................................................... - 1 - PROPOSED CONSTRUCTION ..................................................................................... - 1 - SITE CONDITIONS ....................................................................................................... - 1 - SUBSURFACE CONDITIONS ...................................................................................... - 2 - OWTS ANALYSIS ......................................................................................................... - 3 - DESIGN RECOMMENDATIONS ................................................................................. - 4 - SOIL TREATMENT AREA ....................................................................................... - 4 - OWTS COMPONENTS .............................................................................................. - 5 - OWTS OPERATION AND MAINTENANCE .............................................................. - 7 - OWTS HOUSEHOLD OPERATION ......................................................................... - 8 - OWTS MAINTENANCE ........................................................................................... - 8 - OWTS CONSTRUCTION OBSERVATION ................................................................. - 9 - LIMITATIONS ............................................................................................................... - 9 - FIGURE 1 OWTS SITE PLAN FIGURE 2 USDA GRADATION TEST RESULTS FIGURE 3 SOIL TREATMENT AREA CALCULATIONS FIGURE 4 SOIL TREATMENT AREA PLAN VIEW FIGURE 5 SOIL TREATMENT AREA CROSS SECTION ATTACHMENT VALLEY PRECAST 1,000 GALLON SEPTIC TANK DETAIL Project No. 18-7-706.02 INTRODUCTION This report provides the results of an onsite wastewater treatment system (OWTS) design for the proposed residence to be located on Lot 15, Horse Pasture, 922 Mayne Street, Gypsum, Colorado. The purpose of this report is to provide design details for the OWTS in accordance with 2018 Eagle County Onsite Wastewater Treatment System Regulations and the Colorado Department of Public Health and Environment’s Regulation #43. The design study was conducted as part of our agreement for geotechnical engineering services to Dave Kudel dated November 26, 2018. We recently prepared a subsoil study for foundation design of the residence and submitted our recommendations in a report dated December 18, 2018, Project No. 18-7-706. PROPOSED CONSTRUCTION The proposed construction consists of a 3-bedroom single family residence with an attached garage located on the lot as shown on Figure 1. The lower level will be a walkout basement daylighting to the northwest. The ground floors will be slab-on-grade. The proposed OWTS soil treatment area (STA) is planned to be located to the west of the residence. Water service will be provided to the residence by a public water system from northwest of the residence, probably from the existing hydrant shown on Figure 1 trending east and south along the driveway to the residence. If proposed construction is different than that described, we should be contacted to re-evaluate our design recommendations. SITE CONDITIONS The lot is vacant and the building site has undergone some grading. The area to the west of the building site and planned soil treatment area for the OWTS is mostly natural terrain. A piped irrigation ditch (Chatfield and Bartholomew Ditch) trends south to north about 60 feet west of the planned STA. To the west of the ditch is irrigated horse pasture. We are not aware of any nearby water wells. - 2 - Project No. 18-7-706.02 The terrain slopes at the site down to the northwest at grades of about 20 to 30% on the hillside where the residence and STA is planned. Vegetation consisted of a scattered sagebrush and grasses and landscaped conifers to the northwest of the proposed STA. Most of the building site has little or no vegetation due to the grading. SUBSURFACE CONDITIONS The field exploration for the OWTS was conducted by a representative of H-P/Kumar on November 27, 2018. Two profile pits (Profile Pits 1 and 2) were excavated with a backhoe at the approximate locations shown on Figure 1 to evaluate the subsurface conditions at the planned STA. The pits were logged by a representative of H-P/Kumar. Logs of the profile pits are provided below. Log of Profile Pit 1 Depth USDA Classification 0-2½’ SILT LOAM to SANDY LOAM; weak blocky structure, stiff, slightly moist, tan, gypsiferous. 2½’-8’ LOAMY SAND; with scattered gravel, single grain structure, medium dense, slightly moist, brown. • Disturbed bulk sample obtained from 1½ to 2½ feet. • Bottom of pit @ 8 feet. • No free water or redoximorphic features observed at time of pit excavation. Log of Profile Pit 2 Depth USDA Classification 0-1½’ LOAM; roots and organics, granular structure, loose, slightly moist, tan. 1½’-8’ LOAMY SAND to SAND; with scattered gravel, single grain structure, medium dense, slightly moist, brown, gypsiferous. • Bottom of pit @ 8 feet. • No free water or redoximorphic features observed at time of pit excavation. The soils encountered in Profile Pit 1 consisted of about 2½ feet of Silt Loam to Sandy Loam overlying Loamy Sand to the pit depth of 8 feet. In Profile Pit 2, the soils encountered consisted of about 1½ feet of Loam overlying Loamy Sand to Sand to the pit depth of 8 feet. A hydrometer and gradation analyses were performed on a disturbed bulk sample of the soils from - 3 - Project No. 18-7-706.02 Profile Pit 1 from 1½ to 2½ feet depth with the results provided on Figure 2. The tested sample (minus No. 10 size sieve fraction) classified as Sandy Loam per the USDA system. Based on the subsurface conditions, the upper 1½ to 2½ feet of soils have been classified as Soil Type 2A per State regulations and the underlying soils have been classified as Soil Type 1. No free water was encountered in the pits or indications of seasonal high groundwater observed at the time of excavation. In addition to the two profile pits, percolation testing was performed in two holes hand dug in the bottoms of shallow backhoe pits on November 27, 2018. The tests were performed at depths of 29 and 32 inches The percolation rates obtained ranged from about 5 to 10 minutes per inch (mpi). Percolation test procedures outlined in Colorado State Health Department Regulation #43 were not utilized and the results were only used for comparison to our profile pit evaluations. OWTS ANALYSIS Based on the site conditions and profile pit evaluations, the site appears feasible for a conventional infiltration STA system consisting of Infiltrator chambers in a trench configuration. The base of the soil treatment trenches will be in Loamy Sand to Sand soils (Soil Type 1) for which we will use an LTAR of 0.8 gallons per square foot per day to size the STA. Trenches should be excavated down to the Loamy Sand to Sand soils below the Silt Loam, Loam and Sandy Loam soils. The system will be designed for three bedrooms. The sewage effluent will gravity flow to the septic tank for primary treatment, then gravity flow to the STA for dispersal and final treatment. The STA will consist of two trenches with Infiltrator Quick 4 Plus Standard chambers in a serial distribution network. A 25 feet setback is required from the proposed STA to any potable water supply lines. The location of the water supply line is currently not yet designed but should be located beyond the required set-back. If the water supply line is within 25 feet of the proposed STA, we should be notified for additional recommendations. The STA must be at least 10 feet from the lot property line and 20 feet from occupied structures. - 4 - Project No. 18-7-706.02 DESIGN RECOMMENDATIONS The design recommendations presented below are based on the proposed construction, the site and subsurface conditions encountered and our experience in the area. A layout of the proposed OWTS components is provided on Figure 1. If conditions encountered during construction are different than those that are described in this report, please contact us and we will re-evaluate our design recommendations. We should observe the trench excavations prior to the Infiltrator installation to verify the infiltration surface soils are the sand soils we have assumed for the design. SOIL TREATMENT AREA • Soil treatment area calculations are shown in Figure 3. • The STA was sized based on an LTAR of 0.8 gallons per square feet per day. • The STA will consist of two trenches with 17 Infiltrator Quick 4 Plus Standard chambers in each (34 chambers total) placed in the native Loamy Sand to Sand soils. Effluent distribution will be provided by a serial distribution system. • Each chamber was allowed 12 square feet of area. A 30% reduction of the STA size was applied for use of Infiltrator chambers in a trench configuration. The total STA is 408 square feet. • A minimum of four feet of undisturbed soils between the trenches is required. • The trenches should be oriented along ground contours to minimize soil cut and cover. • The base and sidewalls of the trench excavations should be scarified prior to the chamber placement. • A minimum of 12 inches and a maximum of 24 inches of cover soil should be placed over the chambers. • Backfill should be graded to deflect surface water away from the STA and should be sloped at 3 horizontal to 1 vertical maximum. This is especially important along the up- slope side of the field where a swale will likely be needed. • Disturbed soil should be re-vegetated as soon as possible with a native grass mix. No trees, shrubs or other plants with deep roots should be planted on or near the STA as this may damage the system piping. - 5 - Project No. 18-7-706.02 • Four-inch diameter inspection ports should be installed vertically into the knockouts provided in the Infiltrator end caps. Install vents at each end of each trench. The inspection port piping should be screwed into the top to the chambers and should not extend down to the ground surface inside the chambers. The inspection ports should extend at least 8 inches above the finished ground surface or be protected in a valve box at finished grade. • A plan view of the STA is presented on Figure 4 and a cross section of the STA is presented on Figure 5. • The STA must maintain a 25 feet setback from the on-site water supply line. OWTS COMPONENTS Recommended OWTS components provided below are based on our design details and our experience with the specific component manufacturers. Equivalent components may be feasible but need to be approved by us prior to construction. Septic Tank • A 1,000 gallon, two-chamber Valley Precast septic tank, or equivalent, is proposed for primary treatment. A detail of the tank is provided as an attachment to the report. • An effluent filter should be installed in the tank outlet tee. • The tank must be a minimum of five feet from the residence and from the STA. The tank must be a minimum of 10 feet from any potable water supply lines. • The tank must be set level. The excavation bottom must be free of large rocks or other objects that could damage the tank during placement. A road base or gravel bedding material may be needed to prevent tank damage during placement and act as a leveling course. • The tank lids must extend to final surface grade and made to be easily located. • Install the tank with 2 feet minimum cover soil for frost protection. Maximum tank soil cover is 4 feet. - 6 - Project No. 18-7-706.02 Sewer Pipe • The sewer line to the septic tank should not be less than the diameter of the building drains and not less than 4 inches in diameter. • The sewer pipes should have a rating of SDR35 or stronger. • The sewer pipe should be sloped between 2% to 4% to help limit disturbance of solids in the tank and potential sewage bypass of the first chamber of the tank. If a steeper slope is needed, this can be accomplished with vertical step-downs in the sewer line. • A minimum 36 inches of cover soil should be provided over the sewer pipe. Paved areas, patios or other areas without vegetative cover may be more susceptible to frost. We recommend 48 inches of soil cover over the sewer pipe in these areas and the pipe be insulated on top and sides with 2-inch-thick blue foam insulation board. If adequate soil cover is not possible, we should be contacted for re-evaluation prior to installation. • The sewer pipe should be double encased with larger diameter Schedule 40 PVC pipe underneath driveway surfaces and be provided with at least 48 inches of soil cover and be insulated on top and sides with 2-inch-thick foam insulation board • The sewer pipe should be bedded in compacted ¾ inch road base or native soils provided that the native soils contain no angular rocks or rocks larger than 2½ inches in diameter to help prevent settlement of the pipe. Sags in the pipe could cause standing effluent to freeze and damage the piping. • Install cleanout pipes within 5 feet of the building foundation, where the sewer pipes bend 90 degrees or more and every 100 feet of sewer pipe. • All 90-degree bends should be installed using a 90-degree long-sweep or by using two 45-degree elbows. • The sewer line location shown on Figure 1 is considered conceptual. We assume that there will be only one sewer line exiting the residence. It is the responsibility of the owner/contractors to locate all sewer line exit locations and connections to the septic tank. We should be notified if there are other sewer lines exiting the residence. Effluent Transport Piping • The effluent transport pipe should be 4-inch diameter SDR35 piping sloped at a 2% minimum to flow from the septic tank to the first trench. Piping should extend at least 6 - 7 - Project No. 18-7-706.02 inches into the top knockout provided in the Infiltrator end caps and be screwed in place. Splash plates should be installed beneath the inlet piping to help limit scouring of the infiltrative soil surface in the chambers. • The serial connection between the rows should also consist of 4-inch diameter SDR35 piping sloped at a 2% minimum to drain to the next trench. Piping should extend at least 6 inches into the knockout provided in the Infiltrator end caps and be screwed in place. • The effluent transport pipe should be bedded in compacted ¾ inch road base or native soils provided that the native soils contain no angular rocks or rocks larger than 2½ inches in diameter to help prevent settlement of the pipe. Sags could cause standing effluent to freeze and damage to the piping. • A minimum 36 inches of cover soil should be provided over the effluent transport pipe. Paved areas, patios or other areas without vegetative cover may be more susceptible to frost. We recommend 48 inches of soil cover over the effluent pipe and insulation with at least 2 inches of rigid foam insulation in these areas. If adequate cover soil is not possible, we should re-evaluate soil cover prior to installation. • The effluent pipe should be double encased with larger diameter Schedule 40 PVC pipe underneath driveway surfaces and be provided with at least 48 inches of soil cover and be insulated on top and sides with 2-inch-thick foam insulation board. • All 90-degree bends should be installed using a 90 degree long-sweep or by using two 45-degree elbows. OWTS OPERATION AND MAINTENANCE The OWTS will require periodic inspection and maintenance to function properly. A properly designed, installed and maintained system can greatl y increase its lifespan. The level of maintenance will vary depending on the complexity of the system and water use habits of the residents. We recommend that an OWTS Operation and Maintenance (O&M) Manual be developed. Depending on the complexity of the system a contract with an OWTS maintenance provider may be prudent. Below are some basic recommendations for the OWTS O&M. - 8 - Project No. 18-7-706.02 OWTS HOUSEHOLD OPERATION The OWTS will require periodic inspection and maintenance to function properly. The level of maintenance will vary depending on the complexity of the system and water use habits of the residents. Below are some basic recommendations for the OWTS O&M. • Use of high efficiency water fixtures is recommended to decrease the hydraulic load on the OWTS system. • Fix plumbing leaks immediately as this may cause a hydraulic overload of the STA. • Do not irrigate the area on top of or directly upgradient of the STA as this may cause a hydraulic overload. • Do not dispose of household waste down household drains as this may clog or damage OWTS components. Examples of household waste includes: dental floss, cotton swabs, coffee grounds, paper towels, feminine products and many other kitchen and bath items. • Use of kitchen garbage disposals is not recommended. If a garbage disposal is utilized, kitchen wastewater should be screened thoroughly. Many kitchen solids are not decomposed in the septic tank and may cause increased tank pumping frequency. • Do not dispose of household chemicals, greases, oils, paints, hot tub water or water softener backwash in household drains. A separate drywell, if feasible, may be necessary for hot tub water or water softener backwash disposal. • Limit the use of bleach as this may harm useful bacteria in the septic tank and STA. • Liquid dishwasher and clothes washer detergent is recommended for households served by an OWTS. Clay substances used as fillers in powder detergents may result in clogging of the STA. • The effluent in septic tanks can freeze during extended periods of non-use in cold weather. We recommend that a tank heater be installed in this system to help prevent freezing. OWTS MAINTENANCE • Inspect the septic tank, effluent pump, effluent pump vault filter and soil treatment area at least annually for problems or signs of failure. - 9 - Project No. 18-7-706.02 • The pump vault filter should be cleaned annually by spray washing solids into the first chamber of the septic tank. • Septic tank should be pumped and cleaned every 3 to 5 years depending on use. Longer pumping intervals may increase the amount of solids that reach the soil treatment area, which may shorten its life span. • Pumping of the septic tank should take place when the level of the sludge and scum layers combined take up 25 to 33% of the capacity of the first chamber of the tank. OWTS CONSTRUCTION OBSERVATION The Eagle County Environmental Health Department requires that the designer of the system provide a record drawing and certification of the OWTS construction (As-Built inspection). We should be provided with at least 48-hour notice prior to the installer needing the inspection. Prior to issuance of our certification letter, we require observation of all system components prior to backfill. The number of site visits required for the inspection will depend on the installer’s construction schedule. LIMITATIONS We have conducted this design in accordance with generally accepted engineering principles and practices in this area at this time. We make no warranty either expressed or implied. The recommendations provided in this report are based on the site conditions, profile pit evaluations, soil texture analysis, the proposed construction and our experience in the area. Variations in the subsurface conditions may not become evident until excavation is performed. If conditions encountered during construction appear different from those described in this report, we should be notified so that re-evaluation of the recommendations may be made. This report has been prepared for the exclusive use by our client for design purposes. We are not responsible for technical interpretations by others of our information. As the project evolves, we should provide continued consultation and field services during construction to review and monitor the implementation of our recommendations, and to verify that the recommendations have been appropriately interpreted. Significant design changes may require additional analysis or modifications to our design. USDA GRADATION TEST RESULTS 1 MIN. 4 MIN.19MIN.15 MIN.60MIN.#325 #140 3/4"3/8"1 1/2"3"5"6"8" DIAMETER OF PARTICLES IN MILLIMETERS U.S. STANDARD SERIES CLEAR SQUARE OPENINGS SIEVE ANALYSIS TIME READINGS HYDROMETER ANALYSIS #4#10#18#35#60 7 HR 45 MIN.24 HR. 0 10 20 30 40 50 100 90 80 70 60 50 60 70 80 90 100 0 10 20 30 40 20315276.237.519.09.54.752.001.00.500.025.106.045.019.009.005.002.001 SILT COBBLESLARGE GRAVEL MEDIUMCOARSEMEDIUMV. FINE SAND CLAY FINE V. COARSE SMALL USDA SOIL TYPE: SANDY LOAM GRAVEL 7 % SAND 62 % SILT 27 % CLAY 4 % FROM: PROFILE PIT 1 @ 1 12 -2 12 4 INCH DIAMETER PVC OBSERVATION PORTS INSTALLED VERTICALLY INTO KNOCKOUTS PROVIDED IN END CAPS. INSTALL VENTS AT EACH END OF EACH TRENCH. REMOVABLE LID TO BE PLACED ON TOP OF PIPE. PIPE MUST STICK UP AT LEAST 8 INCHES ABOVE FINISHED GRADE OR BE PLACED AT GRADE IN AN ACCESSIBLE VALVE BOX. PIPES SHOULD NOT EXTEND TO SOIL SURFACE AND SHOULD BE SECURED TO CHAMBER WITH SCREWS OR COUPLINGS TO PREVENT SLIDING DOWNWARD. TRANSPORT PIPING SHOULD BE INSERTED AT LEAST 6 INCHES INTO THE UPPER KNOCKOUT IN THE CHAMBER END PLATES. INSTALL SPLASH PLATES BENEATH INLET PIPING TO HELP LIMIT SCOURING OF THE INFILTRATIVE SURFACE.Line FlowFrom Tank4" DIAMETER NON-PERFORATED SDR35 TRANSPORT PIPE SLOPED AT 2% MIN. DOWN TO TRENCH INFILTRATOR QUICK 4 PLUS STANDARD CHAMBERS IN 2 TRENCHES. 17 CHAMBERS IN EACH TRENCH (34 TOTAL).4' MIN. UNDISTURBED S OIL BET WEEN TRENCHES INFILTRATOR QUICK 4 PLUS STANDARD END CAP 4" NON-PERFORATED SDR35 PIPE SERIAL CONNECTIONS SLOPED AT 2% MIN. DOWN TO THE NEXT TRENCH. USE UPPER KNOCKOUT IN END CAP. APPROXIMATE SCALE 1" 20 Notes 1.Chambers should be installed level on a scarified ground surface. 2.Care should be taken by the contractor to avoid compaction of the native soils in the trench areas. The base and side walls of trench excavations should be scarified prior to chamber installation. 3.Fill placed over the soil treatment area should be properly benched into the hillside. 4.All piping should have a rating of SDR35 or stronger. 5.Changes to this design should not be made without consultation and approval by H-P/Kumar. 6.Refer to the 2018 Eagle County Onsite Wastewater System Regulations for other applicable specifications. Infiltrator Quick 4 Plus Standard End Cap Infiltrator Quick 4 Plus Standard Chamber Installed Level Appro x . E x i s t i n g G r o u n d S u r f a c e 12" min. 24" max. Cover Soil Graded to Deflect Surface Water 1ative Soil Excavate 36" Wide Trench Scarify ground surface prior to chamber placement. 4' min. Undisturbed Soil Between Trenches 1otes 1.Chambers should be installed level on a scarified ground surface. Concrete sand may be used as a leveling course if necessary. 2.Care should be taken by the contractor to avoid compaction of the native soils in the trench areas. The base and side walls of trench excavations should be scarified prior to chamber installation. 3.Changes to this design should not be made without consultation and approval by H-P/KUMAR APPR2;IMATE SCALE 1 I1CH )EET