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HomeMy WebLinkAbout417 Jouflas Ranch Rd - 194126301004Work Classification: NewPermit 23 STANMORE CT POTOMAC MD 20854- Address Owner Information Permit Status: Active Project Address 194126301004 Permit Type: OWTS Permit Permit NO. OWTS-9-13-9576 Expires: 1/7/2014 Issue Date: 9/9/2013 Parcel No. 417 JOUFLAS RANCH RD Private Wastewater System Environmental Health Department P.O. Box 179 500 Broadway Eagle, CO 81631-0179 Phone: (970)328-8755 Fax: (970)328-8788 Phone: (301)380-8908 Cell: Inspection For Inspections call: (970) 328-8755 Inspections: IVR OWTS Final Inspection 095 PhoneEngineer(s) 970-945-7988HP GEOTECH Contractor(s)Phone Primary ContractorLicense Number DEFINA CONSTRUCTION CO (970)328-0900 Yes22-13 DAVE GRISSEN Permitted Construction / Details: Install exactly as depicted on the HP Geotech design report dated August 15, 2013, stamped and signed on August 16, 2013. System is designed to serve a four bedroom residence and consists of a 1,500 gallon Valley Precast two compartment tank with effluent filter in the outlet tee; and 1,500 sq. ft. of absorption area credit via 76 Infiltrator Q4 chambers installed in four shallow, serially connected trenches. Access to tank lids must be within 8" of finished grade and the ventilation holes on the inspection portals are not required. Contact the design engineer to conduct all necessary inspections during the installation as determined by the engineer. Engineer certification of the installation according to plans is required along with as-built drawings prior to the use of the system or occupancy of the residence. Issued by: Environmental Health Department, Eagle County, CO September 10, 2013 Date Customer Copy Ray Merry CONDITIONS: 1. THIS PERMIT 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 2. ALL INSTALLATIONS MUST COMPLY WITH ALL REQUIREMENTS OF THE EAGLE COUNTY INDIVIDUAL SEWAGE DISPOSAL SYSTEM REGULATIONS ADOPTED PURSUANT TO AUTHORITY GRANTED IN C.R.S. 25-10-101, et seq., AS AMENDED 3. THIS PERMIT IS VALID ONLY FOR CONNECTION TO 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. CHAPTER IV, SECTION 4.03.29 REQUIRES ANY PERSON WHO CONSTRUCTS, ALTERS OR INSTALLS AN INDIVIDUAL SEWAGE DISPOSAL SYSTEM TO BE LICENSED Work Classification: NewPermit 23 STANMORE CT POTOMAC MD 20854- Address Owner Information Permit Status: Active Project Address 194126301004 Permit Type: OWTS Permit Permit NO. OWTS-9-13-9576 Expires: 1/7/2014 Issue Date: 9/9/2013 Parcel No. 417 JOUFLAS RANCH RD Private Wastewater System Environmental Health Department P.O. Box 179 500 Broadway Eagle, CO 81631-0179 Phone: (970)328-8755 Fax: (970)328-8788 Phone: (301)380-8908 Cell: Inspection For Inspections call: (970) 328-8755 Inspections: IVR OWTS Final Inspection 095 PhoneEngineer(s) 970-945-7988HP GEOTECH Contractor(s)Phone Primary ContractorLicense Number DEFINA CONSTRUCTION CO (970)328-0900 Yes22-13 DAVE GRISSEN Permitted Construction / Details: Install exactly as depicted on the HP Geotech design report dated August 15, 2013, stamped and signed on August 16, 2013. System is designed to serve a four bedroom residence and consists of a 1,500 gallon Valley Precast two compartment tank with effluent filter in the outlet tee; and 1,500 sq. ft. of absorption area credit via 76 Infiltrator Q4 chambers installed in four shallow, serially connected trenches. Access to tank lids must be within 8" of finished grade and the ventilation holes on the inspection portals are not required. Contact the design engineer to conduct all necessary inspections during the installation as determined by the engineer. Engineer certification of the installation according to plans is required along with as-built drawings prior to the use of the system or occupancy of the residence. Office Copy September 10, 2013 Issued by: Environmental Health Department, Eagle County, CO Date Ray Merry CONDITIONS: 1. THIS PERMIT 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 2. ALL INSTALLATIONS MUST COMPLY WITH ALL REQUIREMENTS OF THE EAGLE COUNTY INDIVIDUAL SEWAGE DISPOSAL SYSTEM REGULATIONS ADOPTED PURSUANT TO AUTHORITY GRANTED IN C.R.S. 25-10-101, et seq., AS AMENDED 3. THIS PERMIT IS VALID ONLY FOR CONNECTION TO 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. CHAPTER IV, SECTION 4.03.29 REQUIRES ANY PERSON WHO CONSTRUCTS, ALTERS OR INSTALLS AN INDIVIDUAL SEWAGE DISPOSAL SYSTEM TO BE LICENSED DEPARTMENT OF ENVIRONMENTAL HEALTH (970) 328-8755 FAX: (970) 328-8788 TOLL FREE: 800-225-6136 www.eaolecounty.us EAGLE COUNTY P.O. Box 179 500 Broadway Eagle, CO 81631 www.eaglecounty.us OWTS PERMIT # OLVTs q f 3 —15-7-& BUILDING PERMIT # INCOMPLETE APPLICATIONS WILL NOT BE ACCEPTED (SITE PLAN MUST BE INCLUDED) FEE SCHEDULE APPLICATION FEE $800.00 MAJOR REPAIR FEE $800.00 MINOR REPAIR FEE 400.00 This fee includes the OWTS Permit, Site Evaluation (Percolation Test, or Soil Profile Observation) and Final Inspection. Additional fees may be charged if a re -inspection is necessary, or a pre -construction site visit or consultation is needed. The re -inspection fee is $135.00 Make. all remittance payable to: Eagle County Treasurer. � Property Owner: MVY� tvls V _ Phone: �% I`5$o - E a� �3 jUm � N , Mailing Address: 1email Registered Professional Engineer: Phone: gjL1 Applicant or Contact Person: �� Phone: Licensed Systems Contractor: License # O9c;2 Company / DBA: Phone: _ 3 ALP - b 3-0 Z— Mailing Address: email delvlocmqS+ 0.al C Permit Application is for: New Installation Alteration Repair Location of Proposed Onsite Legal Description: System: Tax Parcel Number: / g111 a&3 0 120 7- Lot Size: Ze-S Assessor's Link: www.eaalecounty..l tus/patie/ Physical Address: i I i ✓`0 9te,� Building Type: I Single Family Residential / Multi Family Number of Bedrooms: Number of Bedrooms: Commercial / Industrial* Type of Use: *These systems re uiredesign my a Registered Professional Engineer Type of Water Supply: Private Well Spring Surface Public If Public Name of Supplier; Applicant Signature: Office Use Only r Amount Paid: v #: Check #: 4 Date: & L December 8, 2014 Dave Grissen 23 Stanmore Ct. Patomac, MD 20854 RE: Final approval of septic permit OWTS-9-13-9576; Tax parcel #194126301004; Property location: 417 Jouflas Ranch Rd, Wolcott area Dave: This letter is to inform you that the above-referenced septic permit has been inspected and finalized. This permit was approved and sized for a 4 bedroom dwelling. Additional information about the maintenance your septic system needs as well as information about private wells can be accessed through web site links provided on the Environmental Health Department’s home page at http://www.eaglecounty.us/envHealth/ 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 drain field can cause premature system failure. It is equally important that you notice and immediately repair dripping faucets and hissing toilets as this will certainly cause the system to fail. By following a few simple guidelines, like avoiding grease or other additives down the drain and making sure your septic tank is on a pumping schedule, your system has been designed to last for many years. If you have any questions regarding this information, please contact us at (970) 328-8755 and reference the OWTS septic permit number. Sincerely, Terri Vroman Administrative Technician IV cc: OWTS permit folder Energov electronic file DEPARTMENT OF ENVIRONMENTAL HEALTH (970) 328-8755 FAX: (970) 328-8788 TOLL FREE: 800-225-6136 www.eaglecounty.us RAYMOND P. MERRY, REHS Director '-'I ech HEPWORTH-PAWLAK GEOTECHNICAL November 28, 2014 Gregg and Company Builders, Inc. Attn: Jim Gregg PO Box 526 Wolcott, Colorado 81655 I Gu(iredinicd, Ins. i020 (rout\ K,wd 154 Cdcnm ,"d jlvin;}, Gd.'nld" 81601 Phon,- 070_0.}5.7`'M F.tx: 970-`)45-N454 retail: C"nu greggco(ebgmail.com Job No. 113 183B Subject: As -Built Evaluation of Onsite Wastewater Treatment System, Proposed Grissen Residence, Lot 5, Filing 2, Travis Creek, 0417 Jouflas Ranch Road, Eagle County, Colorado. Dear Mr. Gregg: Hepworth-Pawlak Geotechnical, Inc. (HP Geotech) observed the installation of the Onsite Wastewater Treatment System (OWTS) for the proposed residence at the subject site. The OWTS components observed included: sewer pipe, cleanout, septic tank, effluent transport pipe, Infiltrator chambers, inspection ports and the locations of these components. Our observations and recommendations are provided in this report. We previously designed the OWTS and presented our recommendations in a report dated August 15, 2013, under our Job No. 113 183B. We performed our As -Built site evaluation on June 30, 2014. The installation and locations of system components were verified approximately as shown on Figure 1. The tank and soil treatment area locations and orientations were modified slightly from our design as shown on Figure 1; however, this will not alter the effectiveness of the OWTS. Photographs of the OWTS installation are provided in the attached Photograph Log. It is our opinion that the OWTS was installed in general conformance with our August 15, 2013 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 system or improper backfill and site grading could affect the operation and effectiveness of the OWTS. Please feel free to contact us if you have any questions regarding this letter. Sincerely, HEPW�ORTH - PAWLAK GEOTECHNICAL, INC. Jason A. De Project Geologist �1%0111>11,,_ Reviewed by: David A. Young, P.E. Attachments: Figure I OWTS, Parker 303-841-7119 0 Colorado Springs 719-633-5562 0 Silverthorne 970-468-1989 SOIL TREATMENT AREA CONSISTING FOUR TRENCHES WITH 19 INFILTRATOR QUICK 4 STANDARD CHAMBERS IN EACH TRENCH CLEANOUT 1,500 GALLON, TWO CHAMBER VALLEY PRECAST SEPTIC TANK - - ! 6LrOUT FIVE BEDROOM tH RESIDENCE \ ©Well 121 611 1'-4 0 SCALE: APPROXIMATE SCALE: 1 INCH = 50 FEET ` 113 183B Goof "tegil 0417 JOUFLAS RANCH ROAD FIGURE 1 HEPWORTH-PAWLAK GEOTECHNICAL OV TS AS -BUILT SITE PLAN OWTS As -Built Photograph Log 0417 Joutlas Ranch Road Photograph showing 1,500 gallon, two chamber Valley Precast septic tank. View looking down the effluent line trench from the septic tank to the soil treatment area. Job No. 113 183B c'_F_�I'tech OWTS As -Built Photograph Log 0417 Jouflas Ranch Road e• J -IIR I f - ,r, r . Photograph showing the soil treatment area upper trench. Photograph showing serial connection between trenches. Job No. 113 183B G&r)tech '-'I ech HEPWORTH-PAWLAK GEOTECHNICAL November 28, 2014 Gregg and Company Builders, Inc. Attn: Jim Gregg PO Box 526 Wolcott, Colorado 81655 I Gu(iredinicd, Ins. i020 (rout\ K,wd 154 Cdcnm ,"d jlvin;}, Gd.'nld" 81601 Phon,- 070_0.}5.7`'M F.tx: 970-`)45-N454 retail: C"nu greggco(ebgmail.com Job No. 113 183B Subject: As -Built Evaluation of Onsite Wastewater Treatment System, Proposed Grissen Residence, Lot 5, Filing 2, Travis Creek, 0417 Jouflas Ranch Road, Eagle County, Colorado. Dear Mr. Gregg: Hepworth-Pawlak Geotechnical, Inc. (HP Geotech) observed the installation of the Onsite Wastewater Treatment System (OWTS) for the proposed residence at the subject site. The OWTS components observed included: sewer pipe, cleanout, septic tank, effluent transport pipe, Infiltrator chambers, inspection ports and the locations of these components. Our observations and recommendations are provided in this report. We previously designed the OWTS and presented our recommendations in a report dated August 15, 2013, under our Job No. 113 183B. We performed our As -Built site evaluation on June 30, 2014. The installation and locations of system components were verified approximately as shown on Figure 1. The tank and soil treatment area locations and orientations were modified slightly from our design as shown on Figure 1; however, this will not alter the effectiveness of the OWTS. Photographs of the OWTS installation are provided in the attached Photograph Log. It is our opinion that the OWTS was installed in general conformance with our August 15, 2013 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 system or improper backfill and site grading could affect the operation and effectiveness of the OWTS. Please feel free to contact us if you have any questions regarding this letter. Sincerely, HEPW�ORTH - PAWLAK GEOTECHNICAL, INC. Jason A. De Project Geologist �1%0111>11,,_ Reviewed by: David A. Young, P.E. Attachments: Figure I OWTS, Parker 303-841-7119 0 Colorado Springs 719-633-5562 0 Silverthorne 970-468-1989 SOIL TREATMENT AREA CONSISTING FOUR TRENCHES WITH 19 INFILTRATOR QUICK 4 STANDARD CHAMBERS IN EACH TRENCH CLEANOUT 1,500 GALLON, TWO CHAMBER VALLEY PRECAST SEPTIC TANK - - ! 6LrOUT FIVE BEDROOM tH RESIDENCE \ ©Well 121 611 1'-4 0 SCALE: APPROXIMATE SCALE: 1 INCH = 50 FEET ` 113 183B Goof "tegil 0417 JOUFLAS RANCH ROAD FIGURE 1 HEPWORTH-PAWLAK GEOTECHNICAL OV TS AS -BUILT SITE PLAN OWTS As -Built Photograph Log 0417 Joutlas Ranch Road Photograph showing 1,500 gallon, two chamber Valley Precast septic tank. View looking down the effluent line trench from the septic tank to the soil treatment area. Job No. 113 183B c'_F_�I'tech OWTS As -Built Photograph Log 0417 Jouflas Ranch Road e• J -IIR I f - ,r, r . Photograph showing the soil treatment area upper trench. Photograph showing serial connection between trenches. Job No. 113 183B G&r)tech �e Ptech HEPWORTH-PAWLAK GEOTECHNICAL Hepwurth-Pawlak Gcorechnical, Inc. 5020 Counry Road 154 Glenwood Springs, Colomdo 81601 Phune:970-945-7965 Fax:970-945-8454 email hp-eo9hPgelrtech-e.11n ONSITE WASTEWATER TREATMENT SYSTEM DESIGN PROPOSED GRISSEN RESIDENCE LOT 5, FILING 2, TRAVIS CREEK 0417 JOUFLAS RANCH ROAD EAGLE COUNTY, COLORADO JOB NO. 113 183B AUGUST 15, 2013 PREPARED FOR: GREGG AND COMPANY BUILDERS, INC. ATTN: JIM GREGG P. O. BOX 526 WOLCOTT, COLORADO 81655 greemam mail.com Parker 303-841-7119 • Colorado Springs 719-633.5562 0 Silverthorne 970-468-1989 TABLE OF CONTENTS PURPOSE AND SCOPE OF STUDY........................................................................ - 1 - PROPOSED CONSTRUCTION................................................................................. - 1 - SITECONDITIONS................................................................................................... - 1 - PERCOLATION TESTING AND SUBSURFACE CONDITIONS ............................ - 1 - OWTSANALYSIS.................................................................................................... - 2- SEPTICTANK........................................................................................................... - 2- SEWER AND EFFLUENT PIPING........................................................................... - 3- ABSORPTIONAREA................................................................................................ - 4- SUBSURFACE DRAINAGE..................................................................................... - 5- OWTSMAINTENANCE........................................................................................... - 5- LIMITATIONS ................................................................... FIGURES FIGURE 1 - OWTS SITE PLAN FIGURE 2 - ABSORPTION AREA CALCULATIONS FIGURE 3 - ABSORPTION AREA PLAN VIEW FIGURE 4 - ABSORPTION AREA CROSS SECTION ATTACHMENTS VALLEY PRECAST SEPTIC TANK DETAIL .............................. - 6- PURPOSE AND SCOPE OF STUDY As requested, Hepworth-Pawlak Geotechnical, Inc. designed an Onsite Wastewater Treatment System (OWTS) for the proposed Grissen residence to be located on Lot 5, Filing 2, Travis Creek, 0417 Jouflas Ranch Road, Eagle County, Colorado. The study was conducted as part of our proposal for geotechnical engineering services to Gregg and Company Builders, Inc. dated May 22,.2013. The data obtained and our OWTS design recommendations based on the proposed construction and subsurface conditions encountered are presented in this report. We previously performed a subsoil study and percolation test for the proposed residence and septic absorption area, and presented our findings and recommendations in a report dated July 31, 2013, Job No. 113 183A. PROPOSED CONSTRUCTION The residence will be a one and two story wood frame structure over a walkout basement level located on the lot as shown on Figure 1. The residence will have a total of four bedrooms. The OWTS will provide service to all levels of the residence. SITE CONDITIONS The lot is vacant and located down -slope of Jouflas Ranch Road. The terrain is moderately steep sloping down to the northeast at grades from about 15 to 25%. Elevation of the absorption field area is about 25 feet lower than the residence. Elevation difference across the proposed absorption field is about 6 feet. The ground surface appears mostly natural. Vegetation consists of moderately thick grass, weeds, brush and trees. PERCOLATION TESTING AND SUBSURFACE CONDITIONS For our previous subsoil study and percolation testing at the site, one profile boring (Profile Boring 1), four profile pits (Profile Pits 1 through 4) and three percolation test Job No. 113 183B G( PtGCh -2- holes (P-1, P-2 and P-3) were drilled/excavated at the approximate locations shown on Figure 1. The profile pits encountered clayey silty sandy gravel and cobbles with boulders underlain at Profile Pits 1, 3 and 4 by sandy silty clay at depths from about 5 to 7 feet. Profile Pit 4 excavated near the previous Profile Boring 1 and percolation test holes (P-1, P-2 and P-3) indicated no bedrock and granular soils to a depth of 7 feet underlain by sandy silty clay soils to the pit depth of 8 feet. No free water was encountered at the time of our subsurface explorations. The percolation testing results were provided in our previous report with an average percolation rate of about 22 minutes per inch obtained. A gradation/hydrometer analyses was performed on the bulk sample of the subsoils from the Profile Pit 3 to determine the United States Department of Agriculture (USDA) soil classification. The natural soils classify as Very Gravelly "SANDY LOAM" per USDA. The Long Term Acceptance Rate (LTAR) for SANDY LOAM from Table 6.28-4 of the State of Colorado Regulations is 0.72 gallons per square foot per day. Based on the percolation rate and SANDY LOAM soils, an LTAR of 0.60 gal/ftz/day was recommended. OWTS ANALYSIS Based on the subsurface conditions encountered and the percolation test results, the area at Profile Boring 1 and Profile Pit 4 is suitable for an OWTS utilizing Infiltrator Chambers and the shallow soils for the treatment and dispersal of effluent. An LTAR of 0.60 will be used for sizing of the absorption area. The effluent will gravity flow to the absorption area. A site plan showing the proposed OWTS, proposed residence, building envelope, and the minimum horizontal setback distances of site features relative to the OWTS components is provided on Figure 1. The OWTS was designed for a total of four bedrooms. All materials and installation should meet the requirements of the current Eagle Onsite Wastewater Treatment System Regulations. SEPTIC TANK A concrete 1,500 gallon, two chamber, Valley Precast septic tank, or equivalent, will be used for primary treatment of sewage from the residence. A detail of the tank is provided Job No. 113 183B G V&ech -3- as an attachment to this report. The tank will be located to the east of the proposed residence as shown on Figure 1. An effluent filter will be installed on the outlet of the second chamber of the septic tank. Sewage will gravity feed from the residence to the septic tank and effluent will be gravity fed to the absorption area. The tank should be set level and bedded as necessary with compacted road base. If the septic tank access riser lids will be installed at grade, with no soil cover, then the lids should be insulated with foam insulation board to provide frost protection. The sewer pipe inlet tee in the first chamber of the septic tank should be installed beneath the access lid of the first chamber of the septic tank so that it can be reached for service should it become clogged. The PVC handle on the effluent filter should be extended up to within reach of the second chamber access riser lid. This will allow for easy access and maintenance of the filter. Approximately 2 feet of soil cover should be placed over the top of the septic tank to allow for easy access and frost protection. For maintenance reasons deep tank installations should be avoided and we should be contacted to evaluate our design should it appear that a deep tank installation involving more than 4 feet of soil over the top of the septic tank may be required. SEWER AND EFFLUENT PIPING The sewer line from the proposed residence to the septic tank should not be less than the diameter of the building drain and not less than 4 inches in diameter and will service all levels of the proposed residence. Soil beneath the sewer pipe must be adequately compacted and bedded to prevent settlement of the pipe. The sewer pipe should be installed in landscape areas with at least 2 feet of soil covering the pipe, or the pipe should be insulated on the top and sides with 2 inch thick rigid foam insulation board for frost protection. Beneath driving surfaces, we suggest Schedule 40 PVC sewer pipe should be used and the pipe insulated if it will be installed with less than 4 feet of soil cover. We suggest the use of Schedule 40 PVC pipe between the proposed residence and the septic tank, though this is not required by local regulations. The portion of the sewer pipe Job No. 113 183B ��E Ptech M extending from 5 feet outside the building foundation should have a slope of at least 2%. Cleanout pipes should be installed in the sewer line adjacent from the building foundation, adjacent to the inlet of the septic tank, where the sewer pipe bends at 90 degrees or more, and at least one ceanout should be installed at least every 100 linear feet of non -pressurized sewer or effluent pipe throughout its length. We recommend that a straight section of pipe be installed between the residence foundation and the septic tank. Any required 90 degree bends in the sewer pipe should be accomplished through the use of a series of 45 degree smooth elbows or a 90 degree long sweep to help prevent clogging of the pipe. ABSORPTION AREA The absorption area calculations are shown on Figure 2. The soil absorption area was designed to be 760 square feet and will have 4 absorption trenches consisting of 76 Infiltrator Quick 4 Standard chambers as shown on Figures 1 and 3. Each chamber was given 10.0 square feet of absorption area per Eagle County regulations. The trenches will each contain 19 chambers and will be combined in a serial distribution system. The absorption trenches should be excavated to the approximate depths shown on Figure 4. The trench excavations must follow the natural contours on -site. Care must be taken during installation to ensure that the soils exposed in the bottom and sidewalls of the trench excavations are not compacted. Once the trench excavations are complete, the trenches should be left open as needed to allow the soils to air dry prior to placement of the Infiltrator chambers and distribution pipes. After the soils have air dried, the bottom and sidewalls of the excavations should be scarified prior to placement of the chambers and piping. The on -site soils excluding rocks larger than about 5 inches can be used as backfill over the chambers. The ground surface should be graded to deflect surface water and precipitation away from the absorption area. This may require a swale at the uphill side. We recommend the soil cover be re -vegetated as soon as possible with a mountain meadow grass mix or suitable equivalent. It is important not to plant large vegetation or Job No. 113 1838 GecPtech -5- vegetation with invasive roots in and around the absorption area and manifold piping as the roots may damage piping. Combination air vent/inspection ports should be installed at each end of the absorption trenches. The ports should be constructed of 4 inch diameter PVC pipe installed into the knockouts provided on the tops of the Infiltrator chambers. The ports should extend a minimum of 8 inches above the ground surface and should have ventilated removable caps. Eagle County requires that the vent holes of the inspection ports be covered with #16 fly-tite screen. The absorption area distribution piping layout and serial trench connections is shown on Figure 3. All materials used and installation methods should meet the requirements of the current Eagle Regulations for Onsite Wastewater Treatment Systems. SUBSURFACE DRAINAGE No free water was encountered in the profile boring and pits when drilled/excavated and it is our opinion that a subsurface drain will not be required. If free water is encountered in any excavations on the site we should be notified to re-evaluate the need for a subsurface drain to protect the absorption area. OWTS MAINTENANCE The OWTS will require maintenance. The level of maintenance will vary with the complexity of the system and water use habits of the users. We recommend that fat, oils, bath oils, greases, paint, solids, water softener backwash solution, water from hot tubs and other constituents that can clog and foul collection and disposal equipment are not disposed of in the residence drains. The absorption area and any areas directly up gradient of it should not be heavily watered by lawn irrigation systems or other means as the soils may become hydraulically overloaded. The septic tank should be pumped whenever the sludge occupies 1/3 of the liquid capacity of the first chamber of the septic tank. In addition, the effluent filter should be checked for clogging at least once per year and cleaned as necessary. We recommend that an operation and maintenance manual be Job No. 113 183B C, Ptech M developed for the OWTS. The system should be operated and maintained as stipulated in the manual. We can prepare the operation and maintenance manual if desired. LIMITATIONS This design has been conducted in accordance with generally accepted engineering principles and practices in this area at this time. We make no warranty either express or implied. The conclusions and recommendations submitted in this report are based upon the data obtained from the profile boring and pits drilled/excavated at the locations indicated on Figure 1 and to the depths shown in our subsoil study and percolation testing report, the proposed type of construction and our experience in the area. Our findings include interpolation and extrapolation of the subsurface conditions identified at the profile boring and pits and 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 at once so re- evaluation of the recommendations may be made. Based on site reconnaissance, it is our opinion that the designed location of the OWTS does not violate any setback requirements of the current Eagle County Environmental Health Department's OWTS regulations. We recommend that the position of the OWTS components, proposed residence and setback requirements be verified in the field by a Professional Land Surveyor licensed in the State of Colorado. This report has been prepared for the exclusive use by our client for the OWTS design submittal process. 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 OWTS construction to review and monitor the implementation of our recommendations, and to verify that the recommendations have been appropriately interpreted. Eagle County requires that an As -Built evaluation of engineered OWTS designs be performed by the design engineer. We should be contacted to perform the As -Built evaluation at least 48 hours before you are ready for the evaluation. You must obtain the required OWTS permit from Eagle County prior to our As - Job No. 113 183B C� PtGCh Built inspection. Prior to our evaluation, all system components should be installed including: sewer pipe, effluent pipe, septic tank, effluent filter, inlet and outlet tees, Infiltrator Quick 4 Standard Chamber and distribution piping. No components of the OWTS should be backfilled prior to our performing the As -Built evaluation. Please contact us for any necessary revisions or discussion after review of this report by the Eagle County Environmental Health Department. If you have any questions, or if we may be of further assistance, please let us know. Respectfully Submitted, HEPWORTH - PAWLAK GEOTECHNICAL, INC. 0IFE Robert E. Stem i p ar, P.E. Reviewed David A. RES/ksw Job No. 113 183B G( Pttech s�oo� 0 i ¢ v z a � �°waoyw z =igog m 3 Z E � 3 _6RX A�SARx O W � ' ¢ LL LL 0, m a Z h 0 o 0 o LLm w WZ J m� ��1�-`•---` .. 3 a ¢ O w O n f W z o �o ¢m LL � w0 E O Z. O O Q N to mm wy a0 JZ F o o J E 0 02 ¢ ¢U ¢' aw uR aj W Q O WW J I 111 F 0 O� r � OJ F� i t II I II11 N o ZE w 5DI w • ■ , I I I \�11 \ \1 III dl I I I mms I i I I I d I � I I E, z qq II w2� 3� I Il 11 i II1I �: U6 ; o� I IopiU s I/ I S°LL I i"�ii 2 E-, I -o3: %" I IaJ II II l I I z¢ z I IBA IId IIII :oBoo I I rlI R03!dk I� /III MZU Eso I II I r ago / pf fi/ fam I I M o QU�pr p`Q2 62S z�3, �oz. iimy/ y Oz n¢ 6p jo0 I 1 I i OWTS ABSORPTION AREA CALCULATIONS In accordance with the current Eagle County Land Use Regulations for On -Site Wastewater Treatment Systems, the required absorption area was calculated as follows: Q = (F)(B)(N)(1.5) TOTAL DESIGN FLOW: F=AVERAGE FLOW PER PERSON= 75 GALLONS PER DAY B = TOTAL NUMBER BEDROOMS = N = ESTIMATED NUMBER OF PERSONS PER BEDROOM = 2 CONSTANT=ESTIMATED DESIGN FLOW EQUAL TO15WI/ OF AVERAGE DAILY SEWAGE FLOW = 1.5 GALLONS PER DAY Q = TOTAL DESIGN FLOW = 900 GALLONS PER DAY ABSORPTIONAREA CALCULATIONS, PERCOLATION RATE = 22 MINUTES PER INCH LTAR= LONGTERM ACCEPTANCE RATE = 0.6 GALLONS PER DAY PERSQUAREFOOT A =_—Q LTAR A=NRNDVIMABSORPTION AREA AGGREGATE SIZE= 1500 SQUAREFFEF ABSORPTION AREA REDUCTIONS REDUCTION FACTOR FOR USING CHAMBERS IN A TRENCH = 0.5 MINIMUM ABSORPTION AREA SIZE WITH REDUCTION= 750 SQUARE FEET ABSORPTION TRENCH CONFIGURATION, AMOUNT OF ABSORPTION AREA GIVEN TO EACH CHAMBER = 10.0 SQUARE FEET MINIMUM NUMBER OF CHAMBERS = 75 CHAMBERS NUMBER OF TRENCHES = 4 NUMBER OF CHAMBERS PER TRENCH = 19 TOTAL NUMBER OF CHAMBERS = 76 A= ACTUAL ABSORPTION AREA AGGREGATE SIZE= 760 SQUAREFEEF NOTE: 1. INFILTRATOR QUICK 4 STANDARD CHAMBERS WILL BE USED. 113 1836 I HFPW'?teCh..,... I ABSORPTION AREA CALCULATIONS I FIGURE 2 ) )(xe;/ ( /ZW:0! / §fr,1:5 z \(Mow §\ } m[mw \T/ [M92 }(k§/\\§§ oz}oo {\ ZMR /\ -w�77 ()\ej kk \\\\\ �\ mz ) b (()Ln § k/I* �0 k®j\ §m/) 0200 MM 0*�o \}}\) \\}\ })F: Z,oj NOT TO SCALE 113,eB ABSORPTION AREA PLAN VIEW FIGURE a III -III: W LL _III w =1 I i-III Q IIII�I w Ln Q _2 X J_ O d = Q Q O Z —III i?z zOp, I I I I I a� I I qa z p Z —III ' —III-I Zgz z�¢ em<a Oaj z Fu zzF¢O O m �0 wO�W J 1w-oww Qm Wyoog�'os O� a9 m Fz-ZzO mUO�= ti W N z O w r2y�Ouu i _m H Q —III m m Z III -III E w 0 w I¢o 3S�d �uzm >aa�o�Z I— II� c mvj 0t_n w c= 0� , _III- ,vv���,}} v>U�7o .m.0 C w w Ow 0 NO w 0F pwZ -UU O =J Z<),0 O p E ropoo mow >w 00 a•-pN`mOCm- - 0< W Q U p mw mwwOQ NW2wy <0�muz O Z 113183B I c_-OPtech I CROSS SECTION OF ABSORPTION AREA I FIGURE 4 Item 0 1500 Gallon Top Seam 1500T-2CP Two Compartment Top 20' ClearAcoess View (Big Hole Lid & Riser) 1 Section View *Meets ASTM C4227 spec including C-1644-06 for resilient connectors • 4000 psi concrete • Delivered complete with internal piping • PVC, poly or concrete risers available • Option of pump or siphon installed Digging Spece Invert Dimembne 13' Long x W Wide Inlet Outlet Length Wk th Height 58' below Inlet Inve 58' 53' 132' or 88' Net Side F OutletSj� Total allons 503 gallons 1,505 gallons Nei weight Lld Tank Total 3,8001bs 11,1aolbs 14,7801bs LroWOW & (719) M-6764 2WW Co. Rd. 317 Wastewater P.O. BoK925 • Systems Buem Vfeia, C081211 ALLEY • ProductsFax: (719) 395-3727WO RECAST, Iae. • service Wei: vwvw•valleyprseastcom Emalt: f onidesk@vaneyprecastcom