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HomeMy WebLinkAbout22 Crown Dr - 246511302001 - OWTS-12-14-11938Work Classification:Repair CO Address Owner Information Permit Status:Active Project Address 246511302001 Permit Type:OWTS Permit Permit NO.OWTS-12-14-11938 Expires: 4/21/2015Issue Date:12/22/2014 Parcel No. 000022 CROWN DR EL JEBEL AREA, CO 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: (970)704-0484 Cell: Inspection For Inspections call:(970) 328-8755 Inspections: IVR PhoneEngineer(s) (970)704-0484All Service Septic Contractor(s)Phone Primary ContractorLicense Number BARR CONSTRUCTION Yes39-14 DON BARR Permitted Construction / Details: This OWTS will be constructed in two phases with the first phase allowing the installation of a new 1,500 gallon, 3-compartment Valley Precast tank with dose chamber which will be used temporarily as a vault. Since a pump will eventually be installed in the third compartment, it is anticipated that electrical conduit and wiring will be installed at this time so that an alarm can be installed as required in Regulation 43.12 (D. 9.). The new tank must be at least five feet from the occupied structure. It will be the responsibility of All Service Septic to communicate directly with the installer about any special installation techniques necessary to overcome potential frost line and wet soil conditions. Certification of proper installation by All Service Septic indicating that these instructions were strictly followed along with any photos and a site plan showing the exact location of the center of the tank lids is required prior to the use of the vault. The second phase of construction will be authorized by an amendment to this OWTS Permit when a replacement soil treatment area is designed, reviewed and approved by Eagle County Environmental Health. The original system that this OWTS Permit replaces was permitted under ISDS #908. Issued by: Environmental Health Department, Eagle County, CO December 22, 2014 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:Replace CO Address Owner Information Permit Status:Active Project Address 246511302001 Permit Type:OWTS Permit Permit NO.OWTS-12-14-11938 Expires: 5/14/2015Issue Date:1/14/2015 Parcel No. 000022 CROWN DR EL JEBEL AREA, CO 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: (970)704-0484 Cell: Inspection For Inspections call:(970) 328-8755 Inspections: IVR PhoneEngineer(s) (970)704-0484All Service Septic Contractor(s)Phone Primary ContractorLicense Number BARR CONSTRUCTION Yes39-14 DON BARR Permitted Construction / Details: This OWTS authorized the installation of a new 1,500 gallon, 3-compartment Valley Precast tank with dose chamber in December of 2014 and is now being amended to authorize the installation of the non-pressurized drip dispersal system as designed by All Service Septic stamped, signed and dated January 12, 2015. System consists of the aforementioned tank and 5,500 square feet of soil treatment area credit via 2,750 lineal feet of dispersal pipe arranged in 6 zones that will receive alternating doses of effluent. Each zone consists of 7, 66 foot long laterals with 1/4 inch holes drilled in the 6 o'clock position every 8 inches buried between 12 and 30 inches deep. It is recommended to install the laterals as shallow as allowed by the engineer in order to have the effluent within oxygenated soil horizons to enhance treatment. Due to the soil types present on the site and the timing of installation during winter months, it will be necessary for the installer and the design engineer to discuss best installation practices to avoid smearing of the soil treatment area during installation. Do not install if soils are wet or frozen. Contact the design engineer to conduct all inspections necessary to certify the installation and to prepare the as-built drawing. System certification along with the as-built drawing and photos are required to be received and approved by Eagle County Environmental Health prior to the use of the system. The original system that this OWTS Permit replaces was permitted under ISDS #908. It is recommended to clearly identify the location of the effluent line of the old system for easy access in the future should the old field need to be used as a contingency. Issued by: Environmental Health Department, Eagle County, CO January 14, 2015 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:Replace CO Address Owner Information Permit Status:Active Project Address 246511302001 Permit Type:OWTS Permit Permit NO.OWTS-12-14-11938 Expires: 5/14/2015Issue Date:1/14/2015 Parcel No. 000022 CROWN DR EL JEBEL AREA, CO 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: (970)704-0484 Cell: Inspection For Inspections call:(970) 328-8755 Inspections: IVR PhoneEngineer(s) (970)704-0484All Service Septic Contractor(s)Phone Primary ContractorLicense Number BARR CONSTRUCTION Yes39-14 DON BARR Permitted Construction / Details: This OWTS authorized the installation of a new 1,500 gallon, 3-compartment Valley Precast tank with dose chamber in December of 2014 and is now being amended to authorize the installation of the non-pressurized drip dispersal system as designed by All Service Septic stamped, signed and dated January 12, 2015. System consists of the aforementioned tank and 5,500 square feet of soil treatment area credit via 2,750 lineal feet of dispersal pipe arranged in 6 zones that will receive alternating doses of effluent. Each zone consists of 7, 66 foot long laterals with 1/4 inch holes drilled in the 6 o'clock position every 8 inches buried between 12 and 30 inches deep. It is recommended to install the laterals as shallow as allowed by the engineer in order to have the effluent within oxygenated soil horizons to enhance treatment. Due to the soil types present on the site and the timing of installation during winter months, it will be necessary for the installer and the design engineer to discuss best installation practices to avoid smearing of the soil treatment area during installation. Do not install if soils are wet or frozen. Contact the design engineer to conduct all inspections necessary to certify the installation and to prepare the as-built drawing. System certification along with the as-built drawing and photos are required to be received and approved by Eagle County Environmental Health prior to the use of the system. The original system that this OWTS Permit replaces was permitted under ISDS #908. It is recommended to clearly identify the location of the effluent line of the old system for easy access in the future should the old field need to be used as a contingency. Office Copy January 14, 2015 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.eaglecounty.us P.O. Box 179 500 Broadway Eagle, CO 81631 www.eaglecounty.us EAGLE COUNTY APPLICATION FOR ON -SITE WASTEWATER TREATMENT SYSTEM (OWTS) PERMIT INCOMPLETE APPLICATIONS MAY NOT BE ACCEPTED (SITE PLAN MUST BE INCLUDED) FEE SCHEDULE APPLICATION FEE FOR NEW OWTS OR MAJOR REPAIRS $800.00 MINOR REPAIR FEE $400.00 Fee includes the design review, pem fitting and maintenance of OWTS records Make all checks payable to: Eagle County Treasurer Property Owner: b0 AJ 4422 Phone: 9 J0 - 71) -J) 00 Owner Mailing Address: 2R CRowti 02, C4S41-(- email: �a Professional Engineer: ALL sr./,wia s:=l+nc- Phone: %70 -- 70 `/ - oyk y Applicant / Contact Person: _ b o �i gjtt,,- Phone: 3 7) - r r L v Licensed Systems Contractor Name / Company: r'�,9n.,-. zi7-jsrrc&, �T Contractor Mailing Address: Contractor License #: .. `t --I q Contractor Phone Number: -� 79 //00 email: s -1 4 OWTS Permit Application is for: New Installation Alteration "Repair Tau Parcel Number: Lot Size: Z a c Assessor's Link: www.ea-glecounty.us/patio/ Physical Address: �2 a Cn o cat) /1-7 ✓ o,� f�� Sg ` - Legal Description: Z o 7- Building Type: V Residential / Single Family Number of Bedrooms: Residential / Multi Family Number of Bedrooms: Commercial / Industrial Type of Use: "As of 06/27/2014, all systems require design by a Registered Professional En&4, seer Type of Water Supply: V Private Well Spring Surface Public If Public, Name of Supplier: Applicant Signature: Date: %a le -i1 Office Use Only: OWTS PERMIT # BUILDING PERMTT # Amount Paid: h Receipt #: Check #:'� Date: �� �� October 10, 2015 Don Barr 22 Crown Mountain Dr. Basalt, CO RE: Final approval of septic permit repair OWTS-12-14-11938; Tax parcel #246511302001; Property location: 22 Crown Mountain Dr, Basalt Area Don: This letter is to inform you that the above-referenced septic permit repair has been inspected and finalized. This permit was approved and sized for a 5 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 the old soil treatment area must not be used without our permission in the event the new soil treatment area or ADV experience problems. Also, 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 electronic permit folder Energov electronic file Carla Ostberg DEPARTMENT OF ENVIRONMENTAL HEALTH (970) 328-8755 FAX: (970) 328-8788 TOLL FREE: 800-225-6136 www.eaglecounty.us RAYMOND P. MERRY, REHS Director 1/12/2015 Eagle County Government Mail - Re: 22 Crown Mountain Drive septic design } l Ray Merry <ray.merry@eaglecounty.us> EAGLE COU Re: 22 Crown Mountain Drive septic design Ray Merry <ray.merry@eaglecounty.us> Sun, Jan 11, 2015 at 1:24 PM To: Carla Ostberg <carla.ostberg@gmail.com> Cc: #environment <environment@eaglecounty.us>, ban -construct ion@comcast. net, Jennifer Ludwig <J ennifer. Ludwig@eaglecounty. us> Carla & Don, Sorry we didn't get a chance to talk last Friday. I've completed the review and have he following comments and requests for additional information. Please provide additional calculations regarding the volume within pipes, including the ADV going from the pump to the ADV as well as from the ADV to the laterals up to where the perforated pipes begin so we can know the total volumes of both the solid and perforated pipes in order to demonstrate conformance with the CPOW guidance document. This will help verify the pump that has been specified and whether the gpm and volume delivered should be from a 30 or 50 gpm pump. As I understand it, the PF5005 would deliver 50 gpm when the design anticipates 36 gpm. According to the CPOW guidance document, the inspection portals should have 1/8" to 1/4" drilled holes for air relief. Vent holes above ground should be screened to prevent flying insect entry into the STA. Please indicate what installation techniques will be utilized to avoid soil smearing during site disturbance and trenching to verify that criteria #3 in CPOW guidance document is met. At one point, we were discussing the installation of a ball valve in the effluent line that would be connected to the old field to allow accessibility to the old field as a contingency in the future. What are your current thoughts on this. I think it would be wise to try and find a way to do the connection but the issue would be if it is appropriate to use the pump should the old field is placed into service. The layout is shown to protrude into an easement and appears to not conform with the 10' property line setback. Please remark about purpose of the easement and whether the holder of the easement is amenable to encroaching into it. Don, please drop off the $400 check at the El Jebel Office and have them pop us an email (environment@eaglecounty.us) to verify the total permit fee has been paid. Thanks and feel free to call with questions. I'll be in Colorado Springs the last half of the week (from noon on Wednesday through Friday) but will be able to check emails in the evenings. On Wed, Jan 7, 2015 at 1:38 PM, Carla Ostberg <carla.ostberg@gmail.com> wrote: Hi Ray, Please find the attached design for Don Barr. I'm going to be driving to Denver this afternoon, so I will give you a call to follow up. This is the first non - pressure drip dispersal system I did under the new CPOW guidance document. Don will be beginning to lay out the area and is anxious to get working on this with a break in the weather. Please let us know your time frame for review. I'll give you a call in a couple hours. Thanks! hftps:Hmail.google.com/mail/ca/?ui=2&ik=l 141485fc1 &view=pt&search=sent&m sg=14adaab1186cOd68&si m l=14adaab1186cOd68 1/2 1/12/2015 Eagle County Government Mail - Re: 22 Crown Mountain Drive septic design Carla Ostbe rg CBO Inc. working with ALL SERVICE septic cell) 970-309-5259 office) 970-704-0484 33 Four Wheel Drive Road Carbondale, CO 81623 please note change in email address: carla.ostberg(a gmail.com Raymond P. Merry, REHS Director of Environmental Health PO Box 179 Eagle, CO 81631 970.328.8757 ray. merry@eaglecounty.us AThanks for not printing electronic media hftps:Hmail.google.com/mail/ca/?ui=2&ik=l 141485fc 1 &view= pt&search=sent&m sg=14adaab1186cOd68&si m I=14adaab1186cOd68 2/2 1/27/2015 Eagle County Government Mail - Barr OWTS update P-dbyGo"Nlc Ray Merry <ray.merry@eaglecounty.us> EAGLE COUNIT4" Barr OWTS update Carla Ostberg <carla.ostberg@gmail.com> Wed, Jan 21, 2015 at 12:33 PM To: ray. merry@eaglecounty. us, "barrconstruction@comcast.net" <barrconstruction@comcast. net> Hi Ray, I just wanted to give you a quick update on Don Barr's system. Don and his wife just moved back into the house and are currently using the new tank as a vault. The pump is OFF and the alarm is ON. Don also decided to reconnect the existing field as an emergency alternative, as you had suggested, and added valves to the lines coming out of the tank. The dirt excavated to run the pump line to the existing field was very dry. He is going to start excavation of the pump line to the ADV location and see how the soils look. We will keep you posted with progress. Attached are some photos. Please let me know if you have any questions. Thank you! Carla Ostberg CBO Inc. working with ALL SERVICE septic cell) 970-309-5259 office) 970-704-0484 33 Four Wheel Drive Road Carbondale, CO 81623 please note change in email address: carla.ostbergCa gmaiLcom 3 attachments photo 1 (2).JPG 166K hftps:Hmail.google.com/mail/?ui=2&ik=1141485fc1&view=pt&as from=carla.ostberg%40gmail.com&as_sizeoperator=s sl&as sizeunit=s_smb&as subset=al... 1/2 1/27/2015 Eagle County Government Mail - Barr OWTS update photo 5.JPG 130K photo 3.JPG 111K hftps:Hmail.google.com/mail/?ui=2&ik=1141485fc1&view=pt&as from=carla.ostberg%40gmail.com&as_sizeoperator=s sl&as sizeunit=s_smb&as subset=al... 2/2 1/27/2015 Eagle County Government Mail - Re: revised septic design A09p.-d brC, LXjQtl' EAGLE CM Re: revised septic design Ray Merry <ray.merry@eaglecounty.us> Carla Ostberg <carla.ostberg@gmail.com> Tue, Jan 13, 2015 at 9:12 PM To: Ray Merry <ray.merry@eaglecounty.us> Cc: " ban -construct ion@comcast. net" < ban -construct ion @comcast. net> Hi Ray, 20' is between 25 and 50% of the total pipe length of 66', required to be completely filled by each dose. It is not required that the entire lateral length be filled each dose. Call me if this is still confusing. Thanks! Sent from my iPad On Jan 13, 2015, at 5:19 PM, Ray Merry <ray.merry@eaglecounty.us> wrote: Carla, The volume calculations in the report use 20' as the length of the laterals while the drawings show 66'. Could you rectify this or explain if I'm missing something. Don, Thank you for dropping off the $400 check in El Jebel. They mentioned that you'd like to get started right away and I can't blame you. It will be imperative to avoid installing the STA in wet or frozen soils so that is why I asked the design engineer to specify what precautions will be required by them to overcome smearing or changes in the soil structure due to manipulation. Thanks. On Tue, Jan 13, 2015 at 2:00 PM, Carla Ostberg <carla.ostberg@gmail.com> wrote: Here you go! Please let me know if you have any questions. thanks! Carla Ostberg CBO Inc. working with ALL SERVICE septic cell) 970-309-0259 office) 970-704-0484 33 Four Wheel Drive Road Carbondale, CO 81623 please note change in email address: carla.ostberg(@gmail.com Raymond P. Merry, REHS Director of Environmental Health PO Box 179 Eagle, CO 81631 970.328.8757 ray. merry@eaglecounty.us hftps:HmaiI.google.com/mail/?ui=2&ik=1141485fc1&view=pt&as from=carla.ostberg%40gmaiI.com&as_sizeoperator=s sl&as sizeunit=s_smb&as subset=al... 1/2 10/12/2015 Eagle County Government Mail - Re: 22 Crown Mt. Drive final septic documents Ray Merry <ray.merry@eaglecounty.us> EAGLE n-va* Re: 22 Crown Mt. Drive final septic documents Carla Ostberg <carla.ostberg@gmail.com> Fri, Oct 9, 2015 at 8:18 PM To: Ray Merry <ray.merry@eaglecounty.us> Cc: #environment <environment@eaglecounty.us>, "barrconstruction @comcast. net" <barrconstruction@comcast. net> Thanks Ray, The valve is accessible from grade. Would you like me to re -write the letter and drawing with that point more clear? On Fri, Oct 9, 2015 at 4:33 PM, Ray Merry <ray. merry@eaglecounty. us> wrote: Please indicate the exact location of the ball valve as measured from two fixed points or indicate that access to this valve is at grade. Don, Please understand that the old soil treatment area must not be used without our permission in the event the new soil treatment area or ADV experience problems. Thanks. On Wed, Oct 7, 2015 at 4:06 AM, Carla Ostberg <carla.ostberg@gmail.com> wrote: Hi there, Please find the attached final documents that should close out the septic permit for 22 Crown Mountain Drive. Let me know if you have any questions. Thanks! Carla Ostberg CBO Inc. working with ALL SERVICE septic cell) 970-309-5259 office) 970-704-0484 33 Four Wheel Drive Road Carbondale, CO 81623 Raymond P. Merry, REHS Director of Environmental Health PO Box 179 Eagle, CO 81631 970.328.8757 ray. merry@eaglecounty. us AThanks for not printing electronic media hftps:Hm ai I.google.com/mai I/ca/u/0/?ui=2&ik=1141485fcl &view=pt&search=inbox&msg=1504f8b36bdc446e&si m 1=1504f8b36bdc446e 1/2 10/12/2015 Eagle County Government Mail - Re: 22 Crown Mt. Drive final septic documents Carla Ostberg CBO Inc. working with ALL SERVICE septic cell) 970-309-5259 office) 970-704-0484 33 Four Wheel Drive Road Carbondale, CO 81623 https://m ai I .googl e.com/m ai I/ca/u/0/?ui=2&ik=1141485fcl &view=pt&search=inbox&msg=1504f8b36bdc446e&si m l=1504f8b36bdc446e 2/2 January 12, 2014 Project No. C1116 Don Barr barrconstruction@comcast.net Subsurface Investigation and Onsite Wastewater Treatment System Design 5-Bedroom Residence 22 Crown Mountain Drive Eagle County, Colorado Don, ALL SERVICE septic, LLC performed a subsurface investigation and completed an onsite wastewater treatment system (OWTS) design for the subject residence. The property is located outside of Basalt, in an area where OW TSs and wells are necessary. SITE CONDITIONS A 5-bedroom, single-family residence presently exists and is utilizing an existing OWTS. The existing 1250-gallon poly tank is leaking at the gasket between the tank and the outgoing sewer pipe. The soil treatment area (STA) is experiencing saturated conditions. The property is relatively flat, sloping slightly to the north toward the Roaring Fork River. The area of the proposed STA is in a yard with irrigated grass. There is a shallow irrigation ditch that runs through the property. This ditch will be abandoned. The residence is served by a shared well, located on a neighboring property. This well is located greater than 100-feet from the proposed STA. SUBSURFACE The subsurface was investigated on December 19, 2014 by digging two soil profile test pit excavations (Test Pits). Visual and tactile soil analysis was completed by Carla Ostberg at the time of excavation.1 The materials encountered in the Test Pit #1 consisted of dark brown, firm, moist, sandy clay loam to a maximum depth explored of 8.0-feet. The soils have a granular structure shape, a moderate structure grade, and friable consistence. No bedrock or groundwater was encountered. The materials encountered in Test Pit #2 consisted of dark brown, firm, moist, sandy clay loam to a maximum depth explored of 6.0-feet. The soils have a granular structure shape, a moderate structure grade, and friable consistence. No bedrock or groundwater was encountered. STA sizing is based on Soil Type 3A, Sandy Clay Loam with granular structure. 1 Carla Ostberg holds a Certificate of Attendance and Examination from the CPOW Visual and Tactile Evaluation of Soils Training. Page 2 A long term acceptance rate (LTAR) of 0.3 gallons per square foot, will be used to design the OWTS, in accordance with Table 10-1 Soil Type 1 presented in the Eagle County On-Site Wastewater Treatment System Regulations, adopted May 13, 2014. Test Pits observed December 19, 2014 Test Pit #1 Test Pit #2 Page 3 DESIGN SPECIFICATIONS The existing 1250-gallon poly septic tank will be removed and existing STA will be abandoned in place. The OWTS design is based on 5-bedrooms. A Non-Pressurized Drip Dispersal System (NDDS) has been designed per criteria outlined in Colorado Professionals in Onsite Wastewater (CPOW Guidelines for the Design and Installation of NDDS, Revised December 11, 2014. Design Calculations: Wastewater Flow = Q = 75 gal/day x 2 people/bedroom x 5 Bedrooms = 750 gal/day Q / LTAR 750 / 0.3 = 2500 SF x 2.2 Size Adjustment Factor = 5500 SF 5500 SF / 2 = 2750 lineal feet of drip dispersal pipe The system installation will include a new 1500-gallon, three-compartment Valley Precast concrete septic tank with an Orenco® Biotube Pump Vault and Orenco® PF5005 pump or equivalent pump that is able to achieve 37 gallons per minute and 41 feet of total dynamic head. The NDDS system has been designed to completely fill 25% - 50% of the distribution laterals in each zone each pump cycle. Calculations are as follows: 1.5-inch Schedule 40 pump transport line to ADV = 127’ x .106 gal/foot = 13.46 gallons 1.5-inch Schedule 40 pipe from ADV to manifold = 91’ x .106 gal/foot = 9.65 gallons 2.0-inch Schedule 40 manifold = 12’ x .174 gal/foot = 2.1 gallons 2.0-inch Schedule 40 laterals (7 laterals, 20-feet long) = 140’ x .174 gal/foot = 24.36 gallons 13.46 + 9.65 + 2.1 + 24.36 = 49.57 gallons needed to “completely fill” pipes. The pump floats will be set to dose 100-gallons. Total drain back from the pump transport line will be 13.46 gallons, leaving 86.54 gallons entering the field each pump cycle. Effluent will be pumped through a 1.5-inch diameter transport line to a Model 6606 Automatic Distributing Valve (ADV), which must remain accessible from grade, and then to six new NDDS zones. An air relief valve must be placed at the high point on the 1 ½-inch diameter line from the tank to the ADV. Each zone will consist of a 2-inch diameter manifold and seven 2-inch distribution laterals 66-feet long. Laterals must be installed with a trencher, with each line 2-feet on center. Laterals must have ¼-inch orifice holes at 6 o’clock, 8-inches on center. Dispersal laterals must be installed a minimum 12-inches and maximum 30-inches deep. An inspection port, connected to the distal end of one lateral in each zone must be installed. The inspection port shall extend at least 12” above grade, or may be left “below grade” if placed into a protective accessible cover flush to grade. The ports shall include a 1/8-1/4” drilled hole, for an air release. The control panel for the pump must be placed within line of sight of the septic tank. The filter in the Biotube pump vault must be cleaned annually, or as needed. The component manufacturers are typical of applications used by contractors and engineers in this area. Alternatives may be considered or recommended by contacting our office. 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. Page 4 REVEGETATION REQUIREMENTS An adequate layer of good quality topsoil capable of supporting revegetation shall be placed over the entire disturbed are of the STA 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 irritation shall be plated 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. Irrigation should be discontinued once vegetation over the STA is established. 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. 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. 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, air release valves and 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. Excavation equipment must not drive in excavation of the STA due to the potential to compact soil. 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. INSTALLATION OBSERVATIONS ALL SERVICE septic, LLC 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. ALL SERVICE septic, LLC should be notified 48 hours in advance to observe the installation. Page 5 LIMITS: The design is based on information submitted. If soil conditions encountered are different from conditions described in report, ALL SERVICE septic, LLC 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, ALL SERVICE septic, LLC Reviewed By: Carla Ostberg, MPH, REHS Liability Clause: Under no circumstances whatsoever shall the liability of ALL SERVICE septic, LLC, in connection with any contract, directly or indirectly, exceed the total amount paid by the client to ALL SERVICE septic, LLC for the services and/or goods which are the subject of the contract in connection with which the liability arises. Pump Selection for a Non-Pressurized System - Single Family Residence Project 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 Design Flow Rate Flow Meter 'Add-on' Friction Losses 2.00 127 40 1.50 6605 91 40 1.50 10 37 None 0 inches feet inches feet inches feet gpm inches feet Calculations Transport Velocity Before Valve Transport Velocity After Valve 5.9 5.9 fps fps Frictional Head Losses Loss through Discharge Loss in Transport Before Valve Loss through Valve Loss in Transport after Valve Loss through Flowmeter 'Add-on' Friction Losses 2.7 9.8 12.1 7.0 0.0 0.0 feet feet feet feet feet feet Pipe Volumes Vol of Transport Line Before Valve Vol of Transport Line After Valve 13.4 9.6 gals gals Minimum Pump Requirements Design Flow Rate Total Dynamic Head 37.0 41.6 gpm feet 0 10 20 30 40 50 60 70 80 0 20 40 60 80 100 120 140 160 Net Discharge (gpm) PumpData PF5005 High Head Effluent Pump 50 GPM, 1/2HP 115/230V 1Ø 60Hz, 200/230V 3Ø 60Hz PF5007 High Head Effluent Pump 50 GPM, 3/4HP 230V 1Ø 60Hz, 200/230/460V 3Ø 60Hz PF5010 High Head Effluent Pump 50 GPM, 1HP 230V 1Ø 60Hz, 200/460V 3Ø 60Hz PF5015 High Head Effluent Pump 50 GPM, 1-1/2HP 230V 1Ø 60Hz, 200V 3Ø 60Hz Legend System Curve: Pump Curve: Pump Optimal Range: Operating Point: Design Point: COLORADO PROFESSIONALS IN ONSITE WASTEWATER (CPOW) GUIDELINES FOR THE DESIGN AND INSTALLATION OF NON-PRESSURIZED DRIP DISPERSAL SYSTEMS (NDDS) REVISED DECEMBER 11, 2014 1.0 BACKGROUND Non-Pressurized Drip Dispersal Systems (NDDS), previously known as Low Pressure Pipe or “Bell-Patt” systems, have successfully been used in Colorado since the early 1980’s (Church, 1997). NDDS are typically used in clay soils with poor percolation rates by providing appropriate effluent distribution for absorption with incidental evapotranspiration. The Office of the State Engineer in a letter dated July 31, 1995, indicated that “it complies with the statutory requirement of returning the effluent to the stream system in which the well is located.” NDDS utilize small diameter dispersal pipe (typically 2”) with ¼ inch orifices placed at the “6 o’clock” position, spaced at 8” on center. Laterals are installed by using a “trencher” to install shallow (12” to 30” deep) trenches, at two feet on center. A typical trench width is 8”. Laterals within each zone are placed level, from the proximal to the distal ends, and within the zone. Laterals are connected at the proximal ends by a zone manifold. A typical NDDS system is comprised of multiple zones, with the effluent to each supplied from a main manifold, which distributes effluent from the pumped supply line. In developing these guidelines, the CPOW NDDS Committee (Committee) decided to adopt much of the historic design criteria which had a history of successful function. The Committee developed more explicit requirements for soils and separation to a limiting condition. To keep sizing similar to previous systems, the Committee used the sizing formula in Section 43.10.C.4 of CDPHE OWTS Regulation #43, and included an “adjustment factor” of 2.15. The adjustment factor was calculated by comparing sizes determined using the previous formula with sizes from the sizing formula in Section 43.10 C.4 of Regulation #43. 2.0 DIAGRAMS The attached diagrams illustrate a typical NDDS system . 3.0 CDPHE OWTS REGULATION #43 Colorado Department of Public Health and Environment Water Quality Control Commission Onsite Wastewater Treatment System Regulation #43 does not include specific requirements for NDDS. However, CDPHE has confirmed that the NDDS falls within the requirements of Section 43.12(B) for Evapotranspiration and Evapotranspiration/Absorption Systems in Regulation #43 and concurs that local public health agencies may approve designs of NDDS that follow the criteria set forth within this document. 1 4.0 DESIGN AND INSTALLATION STANDARDS The following design and installation standards will apply to NDDS: 1) NDDS shall be designed by a Colorado Registered Professional Engineer. 2) Trenches shall be excavated into undisturbed soils, unless installed in suitable fill material as described below. 3) Trenching shall not occur when soils are wet enough for the soils to smear. In terms of moisture content, this can be considered to be at or above the “plastic limit” for the soils. 4) Trenching shall be done with a trencher, unless otherwise specified in the engineer design and approved by the local public health agency. Examples of where excavation with a backhoe would include, but not be limited to: slopes exceeding 12% and soils with cobbles. 5) Trenches shall be spaced at 2 feet center to center, and shall be 8 inches wide, unless otherwise specified in the engineer design and approved by the local public health agency. 6) Laterals installed within the trenches shall be 2 inches in diameter, schedule 40 PVC shall be used 7) Lateral orifices shall be ¼ inch, at 8” on center, in the six o’clock position. 8) Trench depth shall not exceed thirty (30) inches and trench length shall not exceed one hundred (100) feet. The trench bottom shall be level ± two (2) inches. 9) NDDS shall be dosed 10) Options for effluent distribution include: a) Manual Rotation using 2-inch or similar ball valves b) Automated Rotation using an automatic distributing valve (ADV) 11) Dose Volume: NDDS using manual rotation: a) The dose volume shall be sufficient to completely fill the following pipe components: i) the supply line from the pump to the first primary manifold, ii) the primary manifold, iii) the supply lines from the primary manifold to the zone manifolds, iv) the zone manifolds b) The dose volume shall be sufficient to fill the following pipe components to 25-50% of capacity: i) Perforated distribution laterals 12) Dose Volume-NDDS using an ADV: a) The dose volume shall be sufficient to completely fill the following pipe components: i) The supply line from the pump to the ADV ii) The supply line from the ADV to the zone manifolds iii) the zone manifolds b) The dose volume shall be sufficient to fill the following pipe components to 25-50% of capacity: i) perforated distribution laterals. 13) The NDDS shall include an “air relief valve” or “snifter” to allow the system to gravity drain back to the tank and into the distribution system, once the pump shuts off. Where the supply line from the pump runs “uphill” to the primary manifold or an ADV, the valve shall be located at the high point in the supply line. Where the supply line from the pump runs 2 downhill to the primary manifold or ADV, the valve shall be located inside the tank, to prevent siphoning of effluent from the tank to the supply line. 14) An inspection port, connected to the distal end of one lateral in each zone shall be installed. The inspection port shall extend at least 12” above grade, or may be left “below grade” if placed into a protective accessible cover flush to grade. The port shall include a 1/8-1/4” drilled hole, for an air release. 15) No irrigation shall be allowed over the soil treatment area. 16) Upon completion of the NDDS soil treatment area, the area shall be seeded. Seeding shall be done in a manner that does not damage the system. Recommendations for seed mixes can be obtained from the local Natural Resources Conservation Service and/or the county public works departments responsible for grading, erosion and sediment control permitting. 17) In observing the construction of the NDDS, the engineer or system contractor shall utilize appropriate equipment to assure that the distribution laterals are installed within the elevation tolerances of ± two (2) inches. 18) Four (4) feet of vertical separation is required to subsurface materials or limiting conditions unsuitable for treating septic tank effluent. Examples of limiting conditions include: a) Fractured media which includes granite and gneiss and weathered or decomposed facies of the same b) Coarse gravel c) Permeable and jointed materials such as sandstone and shale. d) Seasonally high groundwater table 19) For sites without suitable soils necessary to meet the required four feet of vertical separation to subsurface materials or limiting conditions unsuitable for treating septic tank effluent, the requirements of sections 4.0.1, 4.0.2 and 4.0.3 shall be followed, as applicable. 20) System Sizing shall conform to section 4.0.4. 4.0.1 Fill with Existing Soils For sites without suitable soils necessary to meet the required four feet of vertical separation to subsurface materials or limiting conditions unsuitable for treating septic tank effluent, where a minimum of six (6) inches of existing suitable soils (exclusive of topsoil) are present above the limiting condition, the design engineer shall submit a fill plan that, at a minimum, addresses the following: 1. Removal and storage of topsoil. 2. Type of fill material to be placed and manner of placement, as follows: a. Fill material shall be of similar texture to the existing soils and shall be placed to achieve a similar density as the existing material. b. Fill side-slopes shall not be steeper that 3:1 (3 horizontal to 1 vertical) c. Methods of placement, to include lift thickness and level of compaction. d. Grade of fill to assure adequate drainage of precipitation runoff. 3. Testing of fill material, to include, at a minimum, percolation testing in the fill, to verify that the permeability is similar to the existing soils, and to establish a long term acceptance rate (LTAR). 3 4. Preparation of the surface of the existing soil, prior to placement of the fill, to include, at a minimum, scarification followed by placement and compaction of the fill material. 5. Replacement of topsoil, to include, at a minimum: a. Placement prior to trenching and placement of dispersal laterals, so that native soil, fill and topsoil can be mixed. 4.0.2 Fill with Minimal Existing Soils For sites without suitable soils necessary to meet the required four feet of vertical separation to subsurface materials or limiting conditions unsuitable for treating septic effluent, where less than six (6) inches of existing suitable soils (exclusive of topsoil) are present above the limiting condition, the design engineer shall submit a fill plan that, at a minimum, addresses the following: 1. Removal and storage of topsoil. 2. Type of fill material to be placed and manner of placement, as follows: a. Fill material shall be of similar texture to soil types 2A, 3A, or 4A, from Table 10-1 in CDPHE OWTS Regulation #43. b. Fill side-slopes shall not be steeper that 3:1 (3 horizontal to 1 vertical) c. Methods of placement, to include lift thickness and level of compaction d. Grade of fill, to assure adequate drainage of precipitation runoff 3. Preparation of the surface of the existing soil or limiting condition, prior to placement of the fill, to include, at a minimum, scarification followed by placement and compaction of the fill material. 4. Replacement of topsoil, to include, at a minimum: a. Placement prior to trenching and placement of dispersal laterals, so that native soil, fill and topsoil can be mixed. 4.0.3 Fill to Address Irregular Topography Where “fill” is required due to irregular topography which does not allow maintaining the pipe depth within the 12-inch to 30-inch limits, the installation shall include fill rather than cutting to level the ground. Cutting removes vegetation and root systems which are essential to the operation of NDDS. Where fill will be placed for these conditions, it must meet the requirements for fill described in 4.02 above. 4.0.4 System Sizing The minimum NDDS system area shall be calculated using the following formula1: 𝑵𝑫𝑫𝑺 𝑨𝒓𝒆𝒂=(𝑫𝒆𝒔𝒊𝒈𝒏 𝑭𝒍𝒐𝒘 ÷ 𝑳𝑻𝑨𝑹)× 𝑺𝒊𝒛𝒆 𝑨𝒅𝒋𝒖𝒔𝒕𝒎𝒆𝒏𝒕 𝑭𝒂𝒄𝒕𝒐𝒓 Where: NDDS Area1: Soil treatment area, in square feet Design Flow: Flow in gallons per day 4 LTAR: Long Term Acceptance Rate, in gallons per day per square foot, from Table 10-1 in CDPHE Regulation #43 Size Adjustment Factor: From Table 1 below 1The minimum area so calculated shall be comprised of the lateral trenches, the area between the lateral trenches, plus an additional one foot outside the outermost distribution laterals and the proximate and distal ends of the laterals. Each lineal foot of distribution lateral shall be the equivalent of two (2) square feet of NDDS area. TABLE 1: NDDS SIZE ADJUSTMENT FACTORS Soil Type Percolation Rate Size Adjustment Factor 3A 61-75 2.2 4 76-90 1.7 4A 91-120 1.5 5 121+ 1.4 Note: The December 2014 revisions to this document were to address necessary modifications to the “Size Adjustment Factor” for the design of a NDDS. These modifications were provided in order to more accurately associate the sizing of a NDDS under this document and Regulation 43 to the historic design criteria for this type of system. 5.0 SPECIAL REGIONAL AND LOCAL GEOLOGICAL CONDITIONS The soils analysis required in Regulation #43 is sufficient to characterize most subsurface conditions; however, for certain conditions, additional research, site evaluation and analysis are necessary. OWTS professionals need to understand the local geological conditions and how those conditions relate to the design, installation and performance of OWTS. While the standards noted in this document should address the majority of site conditions for the design of a NDDS, it is not the objective of this guidance to inform OWTS professionals how to design or review NDDS for all geological conditions in the State of Colorado. The CPOW NDDS Guidance Committee is aware that there are specific geological conditions which may require slight modifications to these design standards in order to ensure that the NDDS is properly designed. Guidance for these situations should be science based and the information provided should encompass as much technical data as necessary and to provide an avenue for consistency for designers and regulators in the future. Subsequent to a request by a few counties, CPOW has provided an example of such a document relative to the Dawson Arkose Formation located within the Denver Basin. For those OWTS professionals practicing within the Denver Basin, the Dawson Arkose information, located in Appendix A, should be carefully reviewed, understood, and applied. CPOW is available to assist any group which defines a geological condition that falls into the above noted category and warrants additional site-specific criteria. References: 5 Church, E. O., “Drip Irrigation Onsite Wastewater Systems – Colorado”, Site Characterization and Design of On-Site Septic Systems”, ASTM STP 1324, M.S. Bedinger, A. I. Johnson, J. S. Fleming, Eds., American Society for Testing and Materials, 1997) Natural Resources Conservation Service Field Book for Describing and Sampling Soils, National Soils Survey Center NRCS-USDA, September, 2002 (NRCS Field Book), July 31, 1995 letter from Office of the State Engineer Soister, Paul, “Stratigraphy of the Uppermost Cretaceous and Lower Tertiary Rocks of the Denver Basin”, 1978 6 APPENDIX A SPECIAL REGIONAL GEOLOGICAL CONDITONS IMPACTING THE DESIGN AND INSTALLATON OF NDDS The Dawson Arkose formation is found in the Front Range of Colorado within the hydrogeological area known as the “Denver Basin”. Figure 1, in the paper titled “Stratigraphy of the Uppermost Cretaceous and Lower Tertiary Rocks of the Denver Basin” illustrates the extent of the Dawson Arkose. Although cementation of the Dawson Arkose can vary from non- cemented to indurated, in some locations, the Dawson Arkose has the characteristics of Type 3A and 4A soils, from Table 10-1 in Regulation #43. If the Dawson Arkose is present on the site, the site evaluator shall determine whether it is suitable for the installation of NDDS, and provide a statement in the site evaluation report stating the characteristics of the Dawson Arkose that render it suitable. At a minimum, the site evaluator shall evaluate the following characteristics: 1. Whether the material is fractured and jointed 2. The cementation class of the Dawson Arkose. Using the cementation classes from the Rupture Resistance Table on page 2-50 of the Natural Resources Conservation Service Field Book for Describing and Sampling Soils, National Soils Survey Center NRCS-USDA, September, 2002 (NRCS Field Book), the following cementation classes will be considered suitable: Non-Cemented (NC), Extremely Weakly Cemented (EW), Very Weakly Cemented (VW), Weakly Cemented (W). The following cementation classes will be considered unsuitable: Moderately Cemented (M), Strongly Cemented (ST), Very Strongly Cemented (VS), Indurated (I). 3. The Dawson Arkose material within four vertical feet of the deepest infiltrative surface of the trenches. 4. The soil class from Table 10-1, as determined from the tests, as specified in Regulation #43, in order to determine the associated Long Term Acceptance Rate (LTAR). The table below summarizes characteristics 1 and 2 above. A “yes” answer to either question below means the material is unsuitable for the installation of a NDDS. DAWSON ARKOSE CHARACTERISTIC ANSWER (A YES ANSWER MEANS THE DAWSON ARKOSE IS UNSUITABLE) 1. Is material fractured and/or jointed? Yes / No 2. Is the cementation class, M, ST, VS, or I? Yes / No 7 January 6, 2014 Project No. C1116 Don Barr barrconstruction@comcast.net Subsurface Investigation and Onsite Wastewater Treatment System Design 5-Bedroom Residence 22 Crown Mountain Drive Eagle County, Colorado Don, ALL SERVICE septic, LLC performed a subsurface investigation and completed an onsite wastewater treatment system (OWTS) design for the subject residence. The property is located outside of Basalt, in an area where OW TSs and wells are necessary. SITE CONDITIONS A 5-bedroom, single-family residence presently exists and is utilizing an existing OWTS. The existing 1250-gallon poly tank is leaking at the gasket between the tank and the outgoing sewer pipe. The soil treatment area (STA) is experiencing saturated conditions. The property is relatively flat, sloping slightly to the north toward the Roaring Fork River. The area of the proposed STA is in a yard with irrigated grass. There is a shallow irrigation ditch that runs through the property. This ditch will be abandoned. The residence is served by a shared well, located on a neighboring property. This well is located greater than 100-feet from the proposed STA. SUBSURFACE The subsurface was investigated on December 19, 2014 by digging two soil profile test pit excavations (Test Pits). Visual and tactile soil analysis was completed by Carla Ostberg at the time of excavation.1 The materials encountered in the Test Pit #1 consisted of dark brown, firm, moist, sandy clay loam to a maximum depth explored of 8.0-feet. The soils have a granular structure shape, a moderate structure grade, and friable consistence. No bedrock or groundwater was encountered. The materials encountered in Test Pit #2 consisted of dark brown, firm, moist, sandy clay loam to a maximum depth explored of 6.0-feet. The soils have a granular structure shape, a moderate structure grade, and friable consistence. No bedrock or groundwater was encountered. STA sizing is based on Soil Type 3A, Sandy Clay Loam with granular structure. 1 Carla Ostberg holds a Certificate of Attendance and Examination from the CPOW Visual and Tactile Evaluation of Soils Training. Page 2 A long term acceptance rate (LTAR) of 0.3 gallons per square foot, will be used to design the OWTS, in accordance with Table 10-1 Soil Type 1 presented in the Eagle County On-Site Wastewater Treatment System Regulations, adopted May 13, 2014. Test Pits observed December 19, 2014 Test Pit #1 Test Pit #2 Page 3 DESIGN SPECIFICATIONS The existing 1250-gallon poly septic tank will be removed and existing STA will be abandoned in place. The OWTS design is based on 5-bedrooms. A Non-Pressurized Drip Dispersal System (NDDS) has been designed per criteria outlined in Colorado Professionals in Onsite Wastewater (CPOW Guidelines for the Design and Installation of NDDS, Revised December 11, 2014. Design Calculations: Wastewater Flow = Q = 75 gal/day x 2 people/bedroom x 5 Bedrooms = 750 gal/day Q / LTAR 750 / 0.3 = 2500 SF x 2.2 Size Adjustment Factor = 5500 SF 5500 SF / 2 = 2750 lineal feet of drip dispersal pipe The system installation will include a new 1500-gallon, three-compartment Valley Precast concrete septic tank with an Orenco® Biotube Pump Vault and Orenco® PF5005 pump or equivalent pump that is able to achieve 36 gallons per minute and 32 feet of total dynamic head. The NDDS system has been designed to completely fill 25% - 50% of the distribution laterals in each zone each pump cycle; therefore, the floats should be set for a dose volume of 100 gallons. Effluent will be pumped through a 1.5-inch diameter transport line to a Model 6606 Automatic Distributing Valve (ADV), which must remain accessible from grade, and then to six new NDDS zones. An air relief valve must be placed at the high point on the 1 ½- inch diameter line from the tank to the ADV. Each zone will consist of a 2-inch diameter manifold and seven 2-inch distribution laterals 66-feet long. Laterals must be installed with a trencher, with each line 2-feet on center. Laterals must have ¼-inch orifice holes at 6 o’clock, 8-inches on center. Dispersal laterals must be installed a minimum 12-inches and maximum 30-inches deep. An inspection port must be installed at the end of at least one lateral in each zone. The control panel for the pump must be placed within line of sight of the septic tank. The filter in the Biotube pump vault must be cleaned annually, or as needed. The component manufacturers are typical of applications used by contractors and engineers in this area. Alternatives may be considered or recommended by contacting our office. 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. REVEGETATION REQUIREMENTS An adequate layer of good quality topsoil capable of supporting revegetation shall be placed over the entire disturbed are of the STA 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 irritation shall be plated 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. Irrigation should be discontinued once vegetation over the STA is established. Page 4 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. 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. 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, air release valves and 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. Excavation equipment must not drive in excavation of the STA due to the potential to compact soil. 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. INSTALLATION OBSERVATIONS ALL SERVICE septic, LLC 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. ALL SERVICE septic, LLC should be notified 48 hours in advance to observe the installation. LIMITS: The design is based on information submitted. If soil conditions encountered are different from conditions described in report, ALL SERVICE septic, LLC 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. Page 5 Please call with questions. Sincerely, ALL SERVICE septic, LLC Reviewed By: Carla Ostberg, MPH, REHS Liability Clause: Under no circumstances whatsoever shall the liability of ALL SERVICE septic, LLC, in connection with any contract, directly or indirectly, exceed the total amount paid by the client to ALL SERVICE septic, LLC for the services and/or goods which are the subject of the contract in connection with which the liability arises. PF - Pump (PF Series) Voltage (nameplate):1 = 115 (1/2 hp only) 200 = 2002 = 230 (220 if 50 Hz)4 = 460 Frequency:1 = single-phase 60 Hz3 = three-phase 60 Hz 5 = single-phase 50 Hz Horsepower:05 = 1/2 hp 07 = 3/4 hp 10 = 1 hp 15 = 1-1/2 hp 20 = 2 hp30 = 3 hp50 = 5 hp Cord length:Blank = 10' 20* = 20' 30 = 30'50 = 50' Nominal flow (gpm):10 20 30 50 75 * Note: 20-foot cords are available only for single-phase pumps through 1-½ hp Features/Specifications To specify this pump for your installation, require the following: • Minimum 24-hour run-dry capability with no deterioration in pump life or performance* • 1/8-inch (3-mm) bypass orifice (patent pending) to ensure flow recirculation for motor cooling and to prevent air bind • Liquid end repair kits available for better long-term cost of ownership • TRI-SEAL™ floating impeller design on 10-, 20-, and 30-gpm models; floating stack design on 50- and 75-gpm models • Super stainless Franklin Electric motor, rated for continuous use and frequent cycling • Type SOOW 600-V motor cable (suitable for Class I, Division 1 and Division 2 applications) • Five-year warranty from date of manufacture against defects in materials or workmanship * Not applicable for 5-hp models Standard Models See specifications chart, pages 2-3, for a list of standard pumps. For a complete list of available pumps, call Orenco. Nomenclature Applications Our submersible High-Head Effluent Pumps are designed to transport screened effluent (with low TSS counts) from septic tanks or separate dosing tanks. All our pumps are constructed of lightweight, corrosion-resistant stainless steel and engi- neered plastics; all are field-serviceable and repairable with common tools; and all standard 60-Hz PF Series models are CSA certified to the U.S. and Canadian safety standards for effluent pumps, meeting UL requirements. High-Head Effluent Pumps from Orenco® are used in a variety of applications, including pressurized drainfields, packed bed filters, mounds, aerobic units, effluent irrigation, effluent sew- ers, wetlands, lagoons, and more. These pumps are designed to be used with a Biotube® pump vault. Discharge connection Bypass orifice Suction connectionFranklin liquid endFranklin super stainless motorLR809 8 0 LR205 3 8 9 6 PF Series High-Head Effluent Pumps Technical Data Sheet © 2008 Orenco Systems® Inc.NTD-PU-PF-1 Rev. 1.6, © 7/08 Page 1 of 6 Specifications 60 Hz Model PF100511 10 (0.6) 0.5 (0.37) 1 115 120 12.7 12.7 6 1 1/4 in. GFP 23.0 (660) 16 (406) 26 (12) 300 PF100512 10 (0.6) 0.5 (0.37) 1 230 240 6.3 6.3 6 1 1/4 in. GFP 23.0 (660) 16 (406) 26 (12) 300 PF10053200 10 (0.6) 0.5 (0.37) 3 200 208 3.8 3.8 6 1 1/4 in. GFP 23.0 (660) 16 (406) 26 (12) 300 PF1007124, 5 10 (0.6) 0.75 (0.56) 1 230 240 8.3 8.3 8 1 1/4 in. GFP 25.9 (658) 17 (432) 30 (14) 300 PF100732004, 5 10 (0.6) 0.75 (0.56) 3 200 208 5.1 5.2 8 1 1/4 in. GFP 25.4 (645) 17 (432) 31 (14) 300 PF1010124, 5 10 (0.6) 1 (0.75) 1 230 240 9.6 9.6 9 1 1/4 in. GFP 27.9 (709) 18 (457) 33 (15) 100 PF101032004, 5 10 (0.6) 1 (0.75) 3 200 208 5.5 5.5 9 1 1/4 in. GFP 27.3 (693) 18 (457) 37 (17) 300 PF1020126, 7, 8 10 (0.6) 2 (1.49) 1 230 240 12.1 12.1 18 1 1/4 in. SS 39.5 (1003) 22 (559) 48 (22) 100 PF102032006, 8 10 (0.6) 2 (1.49) 3 200 208 8.7 8.7 18 1 1/4 in. SS 37.9 (963) 20 (508) 44 (20) 300 PF200511 20 (1.5) 0.5 (0.37) 1 115 120 12.3 12.5 4 1 1/4 in. GFP 22.3 (566) 18 (457) 25 (11) 300 PF200512 20 (1.5) 0.5 (0.37) 1 230 240 6.4 6.5 4 1 1/4 in. GFP 22.5 (572) 18 (457) 26 (12) 300 PF20053200 20 (1.5) 0.5 (0.37) 3 200 208 3.7 3.8 4 1 1/4 in. GFP 22.3 (566) 18 (457) 26 (12) 300 PF2010124, 5 20 (1.5) 1 (0.75) 1 230 240 10.5 10.5 7 1 1/4 in. GFP 28.4 (721) 20 (508) 33 (15) 100 PF201032004, 5 20 (1.5) 1 (0.75) 3 200 208 5.8 5.9 7 1 1/4 in. GFP 27.8 (706) 20 (508) 33 (15) 300 PF2015124, 5 20 (1.5) 1.5 (1.11) 1 230 240 12.4 12.6 9 1 1/4 in. GFP 34.0 (864) 24 (610) 41 (19) 100 PF201532004, 5 20 (1.5) 1.5 (1.11) 3 200 208 7.1 7.2 9 1 1/4 in. GFP 30.7 (780) 20 (508) 35 (16) 300 PF300511 30 (1.9) 0.5 (0.37) 1 115 120 11.8 11.8 3 1 1/4 in. GFP 21.3 (541) 20 (508) 28 (13) 300 PF300512 30 (1.9) 0.5 (0.37) 1 230 240 6.2 6.2 3 1 1/4 in. GFP 21.3 (541) 20 (508) 25 (11) 300 PF30053200 30 (1.9) 0.5 (0.37) 3 200 208 3.6 3.6 3 1 1/4 in. GFP 21.3 (541) 20 (508) 25 (11) 300 PF300712 30 (1.9) 0.75 (0.56) 1 230 240 8.5 8.5 5 1 1/4 in. GFP 24.8 (630) 21 (533) 29 (13) 300 PF30073200 30 (1.9) 0.75 (0.56) 3 200 208 4.9 4.9 5 1 1/4 in. GFP 24.6 (625) 21 (533) 30 (14) 300 PF3010124 30 (1.9) 1 (0.75) 1 230 240 10.4 10.4 6 1 1/4 in. GFP 27.0 (686) 22 (559) 32 (15) 100 PF301032004 30 (1.9) 1 (0.75) 3 200 208 5.8 5.8 6 1 1/4 in. GFP 26.4 (671) 22 (559) 33 (15) 300 PF3015124, 5 30 (1.9) 1.5 (1.11) 1 230 240 12.6 12.6 8 1 1/4 in. GFP 32.8 (833) 24 (610) 40 (18) 100 PF301532004, 5 30 (1.9) 1.5 (1.11) 3 200 208 6.9 6.9 8 1 1/4 in. GFP 29.8 (757) 22 (559) 34 (15) 300 PF3020124, 5, 7 30 (1.9) 2 (1.49) 1 230 240 11 11 10 1 1/4 in. SS 35.5 (902) 26 (660) 44 (20) 100 PF302032004, 5 30 (1.9) 2 (1.49) 3 200 208 9.3 9.3 10 1 1/4 in. SS 34.0 (864) 24 (610) 41 (19) 300 PF3030126, 7, 8 30 (1.9) 3 (2.23) 1 230 240 16.8 16.8 14 1 1/4 in. SS 44.5 (1130) 33 (838) 54 (24) 100 PF3030326, 8 30 (1.9) 3 (2.23) 3 230 240 10 10.1 14 1 1/4 in. SS 44.3 (1125) 27 (686) 52 (24) 300 PF3050126, 7, 8 30 (1.9) 5 (3.73) 1 230 240 25.6 25.8 23 1 1/4 in. SS 66.5 (1689) 53 (1346) 82 (37) 100 PF3050326, 8 30 (1.9) 5 (3.73) 3 230 240 16.6 16.6 23 1 1/4 in. SS 60.8 (1544) 48 (1219) 66 (30) 300 PF500511 50 (3.2) 0.5 (0.37) 1 115 120 12.1 12.1 2 2 in. SS 20.3 (516) 24 (610) 27 (12) 300 PF500512 50 (3.2) 0.5 (0.37) 1 230 240 6.2 6.2 2 2 in. SS 20.3 (516) 24 (610) 27 (12) 300 PF50053200 50 (3.2) 0.5 (0.37) 3 200 208 3.7 3.7 2 2 in. SS 20.3 (516) 24 (610) 28 (13) 300 PF500712 50 (3.2) 0.75 (0.56) 1 230 240 8.5 8.5 3 2 in. SS 23.7 (602) 25 (635) 31 (14) 300 PF50073200 50 (3.2) 0.75 (0.56) 3 200 208 4.9 4.9 3 2 in. SS 23.1 (587) 26 (660) 32 (15) 300 PF500734 50 (3.2) 0.75 (0.56) 3 460 480 1.8 1.8 3 2 in. SS 34.8 (884) 25 (635) 31 (14) 300 PF501012 50 (3.2) 1 (0.75) 1 230 240 10.1 10.1 4 2 in. SS 27.0 (686) 26 (660) 35 (16) 100 PF50103200 50 (3.2) 1 (0.75) 3 200 208 5.7 5.7 4 2 in. SS 26.4 (671) 26 (660) 39 (18) 300 PF5015124 50 (3.2) 1.5 (1.11) 1 230 240 12.5 12.6 5 2 in. SS 32.5 (826) 30 (762) 41 (19) 100 PF501532004 50 (3.2) 1.5 (1.11) 3 200 208 7 7 5 2 in. SS 29.3 (744) 26 (660) 35 (16) 300 PF5030124, 5, 7, 8 50 (3.2) 3 (2.23) 1 230 240 17.7 17.7 8 2 in. SS 43 (1092) 37 (940) 55 (25) 100 PF5030324, 5, 8 50 (3.2) 3 (2.23) 3 230 240 10.4 10.4 8 2 In SS 40 (1016) 30 (762) 46 (21) 300 PF503032004, 5, 8 50 (3.2) 3 (2.23) 3 200 208 13.1 13.1 8 2 in. SS 43.4 (1102) 30 (762) 55 (25) 300 PF5050326, 8 50 (3.2) 5 (3.73) 3 230 240 16.5 16.5 13 2 in. SS 59.3 (1506) 49 (1245) 64 (29) 300 PF751512 75 (4.7) 1.5 (1.11) 1 230 240 12.1 12.3 4 2 in. SS 33.4 (848) 30 (762) 44 (20) 100 PF Series High-Head Effluent Pumps (continued)Design gpm(L/sec)Horsepower(kW)PhaseNameplate voltageActual voltageDesign flow ampsMax ampsImpellersDischarge sizeand material1Length, in. (mm)Min. liquid level,2in. (mm)Weight,3 lb (kg)Rated cycles/daySee notes on following page. © 2008 Orenco Systems® Inc.NTD-PU-PF-1 Rev. 1.6, © 7/08 Page 2 of 6 PF Series High-Head Effluent Pumps (continued)Design gpm(L/sec)Horsepower(kW)PhaseNameplate voltageActual voltageDesign flow ampsMax ampsImpellersDischarge sizeand material1Length, in. (mm)Min. liquid level,2in. (mm)Weight,3 lb (kg)Rated cycles/day 50 Hz Model PF100552 10 (0.6) 0.5 (0.37) 1 220 230 3.9 4.1 6 1 1/4 in. GFP 23 (584) 17 (432) 26 (12) 300 PF100752 10 (0.6) 0.75 (0.56) 1 220 230 6.2 6.2 9 1 1/4 in. GFP 26.8 (658) 17 (432) 30 (14) 300 PF300552 30 (1.9) 0.5 (0.37) 1 220 230 4.1 4.1 4 1 1/4 in. GFP 22.5 (572) 19 (483) 26 (12) 300 PF300752 30 (1.9) 0.75 (0.56) 1 220 230 6.1 6.1 5 1 1/4 in. GFP 24.8 (630) 19 (483) 29 (13) 300 PF301052 30 (1.9) 1 (0.75) 1 220 230 7.4 7.4 7 1 1/4 in. GFP 28.4 (721) 20 (508) 32 (15) 100 PF3015524, 5 30 (1.9) 1.5 (1.11) 1 220 230 9.3 9.3 8 1 1/4 in. GFP 35.4 (899) 24 (610) 40 (18) 100 PF500552 50 (3.2) 0.5 (0.37) 1 220 230 4 4 2 2 in. SS 20.3 (516) 25 (635) 29 (13) 300 PF500752 50 (3.2) 0.75 (0.56) 1 220 230 6.3 6.4 3 2 in. SS 23.7 (602) 25 (635) 31 (14) 300 PF501052 50 (3.2) 1 (0.75) 1 220 230 7.3 7.4 4 2 in. SS 27 (686) 26 (660) 35 (16) 100 PF501552 50 (3.2) 1.5 (1.11) 1 220 230 9.1 9.1 5 2 in. SS 32.5 (826) 30 (762) 42 (19) 100 1 GFP = glass-filled polypropylene; SS = stainless steel. The 1 1/4-in. NPT GFP discharge is 2 7/8 in. octagonal across flats; the 1 1/4-in. NPT SS discharge is 2 1/8 in. octagonal across flats; and the 2-in. NPT SS discharge is 2 7/8 in. hexagonal across flats. Discharge is female NPT threaded, U.S. nominal size, to accommodate Orenco® discharge hose and valve assemblies. Consult your Orenco Distributor about fittings to connect hose and valve assem- blies to metric-sized piping. 2 Minimum liquid level is for single pumps when installed in an Orenco Biotube® Pump Vault or Universal Flow Inducer. In other applications, minimum liquid level should be top of pump. Consult Orenco for more information. 3 Weight includes carton and 10-ft cord. 4 High-pressure discharge assembly required. 5 Do not use cam-lock option (Q) on discharge assembly. 6 Custom discharge assembly required for these pumps. Contact Orenco. 7 Capacitor pack included with pump. Custom control panel required. 8 Torque locks are available for all pumps, and are supplied with 3-hp and 5-hp pumps. Materials of Construction Discharge: Glass-filled polypropylene or stainless steel Discharge bearing: Engineered thermoplastic (PEEK) Diffusers: Glass-filled PPO (Noryl GFN3) Impellers: Celcon® acetal copolymer on 10-, 20, and 30-gpm models; 50-gpm impellers are Noryl GFN3 Intake screen: Polypropylene Suction connection: Stainless steel Drive shaft: 7/16 inch hexagonal stainless steel, 300 series Coupling: Sintered stainless steel, 300 series Shell: Stainless steel, 300 series Motor: Franklin motor exterior constructed of stainless steel. Motor filled with deionized water and propylene glycol for constant lubrication. Hermetically sealed motor housing ensures moisture-free windings. All thrust absorbed by Kingsbury-type thrust bearing. Rated for continuous duty. Protected against thermal overload and equipped with surge arrestors for added security. © 2008 Orenco Systems® Inc.NTD-PU-PF-1 Rev. 1.6, © 7/08 Page 3 of 6 PF Series High-Head Effluent Pumps (continued) 4 80 12 16 800 700 600 500 400 300 200 100 0 Using a Pump Curve A pump curve helps you determine the best pump for your system. Pump curves show the relationship between flow (gpm or L/sec) and pressure (total dynamic head, or TDH), providing a graphical representation of a pump’s optimal performance range. Pumps perform best at their nominal flow rate — the value, measured in gpm (or L/sec), expressed by the first two numerals in an Orenco pump nomenclature. At low flow rates, TDH varies from pump to pump, so it is represented as a dashed line in the pump curves. For most accurate pump specification, use Orenco’s PumpSelect™ software. 60 Hz Models Total dynamic head (TDH) in feetGallons per minute (GPM) PF10 Series, 60 Hz 1/2 hp to 2 hp PF1005 PF1010 PF1005-FC w/ 1/4" fl ow controller 5 100 15 20 25 3000 300 250 200 150 100 50 0 350 Total dynamic head (TDH) in feetGallons per minute (GPM) PF20 Series, 60 Hz 1/2 hp to 1-1/2 hp PF2005 750 900 600 450 300 150 0 5 10 15 20 25 30 35 400Total dynamic head (TDH) in feetGallons per minute (GPM) PF30 Series, 60 Hz 1/2 hp to 5 hp PF3030 PF3005 250 300 200 150 100 50 0 10 20 30 40 50 60 700 400 350 450 Total dynamic head (TDH) in feetGallons per minute (GPM) PF50 Series, 60 Hz 1/2 hp to 5 hp PF5030 PF5007 PF Series High-Head Effluent Pumps (continued) PF2010 PF2015 PF1007 PF3020 PF3007 PF3010 PF3015 PF5015 PF5005 PF1020 PF3050 PF5010 PF5050 © 2008 Orenco Systems® Inc.NTD-PU-PF-1 Rev. 1.6, © 7/08 Page 4 of 6 PF Series High-Head Effluent Pumps (continued) 60 Hz Models (continued) PF Series High-Head Effluent Pumps (continued) 100 90 80 70 60 50 10 20 30 40 50 60 700 80 90 1000 40 10 20 30 Total dynamic head (TDH) in feetGallons per minute (GPM) PF75 Series, 60 Hz 1-1/2 hpPF7515 © 2008 Orenco Systems® Inc.NTD-PU-PF-1 Rev. 1.6, © 7/08 Page 5 of 6 10 20 30 40 50 600 0 3.01.0 2.0 4.0 40 35 30 25 20 15 10 5 0 45 160 140 120 100 80 60 40 20 0 Total dynamic head (TDH) in feetGallons per minute (GPM) PF50 series, 50 Hz 0.37–1.11 kW PF500752 PF500552 PF501052 Total dynamic head (TDH) in metersLiters per second (L/sec) 105 20 25 300 350 300 250 200 150 100 50 0 15 0.2 0.80 1.4 1.80.4 0.6 1.21.0 1.6 100 80 60 40 20 0 Total dynamic head (TDH) in feetGallons per minute (GPM) PF30, 50 Hz 0.37-1.11 kW PF300552 Liters per second (L/sec)Total dynamic head (TDH) in meters3 60 9 12 250 200 150 100 50 0 80 70 60 50 40 30 20 10 0 90 0.1 0.40 0.70.2 0.3 0.60.5 Total dynamic head (TDH) in feetGallons per minute (GPM) PF10, 50 Hz 0.37–0.56 kW PF100552 PF100552-FC w/ 6-mm fl ow controller PF100752 Liters per second (L/sec)Total dynamic head (TDH) in metersPF Series High-Head Effluent Pumps (continued) 50 Hz Models PF Series High-Head Effluent Pumps (continued) PF300752 PF301052 PF301552 PF501552 © 2008 Orenco Systems® Inc.NTD-PU-PF-1 Rev. 1.6, © 7/08 Page 6 of 6 Pump Selection for a Non-Pressurized System - Single Family Residence Project 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 Design Flow Rate Flow Meter 'Add-on' Friction Losses 2.00 121 40 1.50 6606 80 40 1.50 10 37 None 0 inches feet inches feet inches feet gpm inches feet Calculations Transport Velocity Before Valve Transport Velocity After Valve 5.9 5.9 fps fps Frictional Head Losses Loss through Discharge Loss in Transport Before Valve Loss through Valve Loss in Transport after Valve Loss through Flowmeter 'Add-on' Friction Losses 2.7 9.3 12.1 6.2 0.0 0.0 feet feet feet feet feet feet Pipe Volumes Vol of Transport Line Before Valve Vol of Transport Line After Valve 12.8 8.5 gals gals Minimum Pump Requirements Design Flow Rate Total Dynamic Head 37.0 40.3 gpm feet 0 10 20 30 40 50 60 70 80 0 20 40 60 80 100 120 140 160 Net Discharge (gpm) PumpData PF5005 High Head Effluent Pump 50 GPM, 1/2HP 115/230V 1Ø 60Hz, 200/230V 3Ø 60Hz PF5007 High Head Effluent Pump 50 GPM, 3/4HP 230V 1Ø 60Hz, 200/230/460V 3Ø 60Hz PF5010 High Head Effluent Pump 50 GPM, 1HP 230V 1Ø 60Hz, 200/460V 3Ø 60Hz PF5015 High Head Effluent Pump 50 GPM, 1-1/2HP 230V 1Ø 60Hz, 200V 3Ø 60Hz Legend System Curve: Pump Curve: Pump Optimal Range: Operating Point: Design Point: COLORADO PROFESSIONALS IN ONSITE WASTEWATER (CPOW) GUIDELINES FOR THE DESIGN AND INSTALLATION OF NON-PRESSURIZED DRIP DISPERSAL SYSTEMS (NDDS) REVISED DECEMBER 11, 2014 1.0 BACKGROUND Non-Pressurized Drip Dispersal Systems (NDDS), previously known as Low Pressure Pipe or “Bell-Patt” systems, have successfully been used in Colorado since the early 1980’s (Church, 1997). NDDS are typically used in clay soils with poor percolation rates by providing appropriate effluent distribution for absorption with incidental evapotranspiration. The Office of the State Engineer in a letter dated July 31, 1995, indicated that “it complies with the statutory requirement of returning the effluent to the stream system in which the well is located.” NDDS utilize small diameter dispersal pipe (typically 2”) with ¼ inch orifices placed at the “6 o’clock” position, spaced at 8” on center. Laterals are installed by using a “trencher” to install shallow (12” to 30” deep) trenches, at two feet on center. A typical trench width is 8”. Laterals within each zone are placed level, from the proximal to the distal ends, and within the zone. Laterals are connected at the proximal ends by a zone manifold. A typical NDDS system is comprised of multiple zones, with the effluent to each supplied from a main manifold, which distributes effluent from the pumped supply line. In developing these guidelines, the CPOW NDDS Committee (Committee) decided to adopt much of the historic design criteria which had a history of successful function. The Committee developed more explicit requirements for soils and separation to a limiting condition. To keep sizing similar to previous systems, the Committee used the sizing formula in Section 43.10.C.4 of CDPHE OWTS Regulation #43, and included an “adjustment factor” of 2.15. The adjustment factor was calculated by comparing sizes determined using the previous formula with sizes from the sizing formula in Section 43.10 C.4 of Regulation #43. 2.0 DIAGRAMS The attached diagrams illustrate a typical NDDS system . 3.0 CDPHE OWTS REGULATION #43 Colorado Department of Public Health and Environment Water Quality Control Commission Onsite Wastewater Treatment System Regulation #43 does not include specific requirements for NDDS. However, CDPHE has confirmed that the NDDS falls within the requirements of Section 43.12(B) for Evapotranspiration and Evapotranspiration/Absorption Systems in Regulation #43 and concurs that local public health agencies may approve designs of NDDS that follow the criteria set forth within this document. 1 4.0 DESIGN AND INSTALLATION STANDARDS The following design and installation standards will apply to NDDS: 1) NDDS shall be designed by a Colorado Registered Professional Engineer. 2) Trenches shall be excavated into undisturbed soils, unless installed in suitable fill material as described below. 3) Trenching shall not occur when soils are wet enough for the soils to smear. In terms of moisture content, this can be considered to be at or above the “plastic limit” for the soils. 4) Trenching shall be done with a trencher, unless otherwise specified in the engineer design and approved by the local public health agency. Examples of where excavation with a backhoe would include, but not be limited to: slopes exceeding 12% and soils with cobbles. 5) Trenches shall be spaced at 2 feet center to center, and shall be 8 inches wide, unless otherwise specified in the engineer design and approved by the local public health agency. 6) Laterals installed within the trenches shall be 2 inches in diameter, schedule 40 PVC shall be used 7) Lateral orifices shall be ¼ inch, at 8” on center, in the six o’clock position. 8) Trench depth shall not exceed thirty (30) inches and trench length shall not exceed one hundred (100) feet. The trench bottom shall be level ± two (2) inches. 9) NDDS shall be dosed 10) Options for effluent distribution include: a) Manual Rotation using 2-inch or similar ball valves b) Automated Rotation using an automatic distributing valve (ADV) 11) Dose Volume: NDDS using manual rotation: a) The dose volume shall be sufficient to completely fill the following pipe components: i) the supply line from the pump to the first primary manifold, ii) the primary manifold, iii) the supply lines from the primary manifold to the zone manifolds, iv) the zone manifolds b) The dose volume shall be sufficient to fill the following pipe components to 25-50% of capacity: i) Perforated distribution laterals 12) Dose Volume-NDDS using an ADV: a) The dose volume shall be sufficient to completely fill the following pipe components: i) The supply line from the pump to the ADV ii) The supply line from the ADV to the zone manifolds iii) the zone manifolds b) The dose volume shall be sufficient to fill the following pipe components to 25-50% of capacity: i) perforated distribution laterals. 13) The NDDS shall include an “air relief valve” or “snifter” to allow the system to gravity drain back to the tank and into the distribution system, once the pump shuts off. Where the supply line from the pump runs “uphill” to the primary manifold or an ADV, the valve shall be located at the high point in the supply line. Where the supply line from the pump runs 2 downhill to the primary manifold or ADV, the valve shall be located inside the tank, to prevent siphoning of effluent from the tank to the supply line. 14) An inspection port, connected to the distal end of one lateral in each zone shall be installed. The inspection port shall extend at least 12” above grade, or may be left “below grade” if placed into a protective accessible cover flush to grade. The port shall include a 1/8-1/4” drilled hole, for an air release. 15) No irrigation shall be allowed over the soil treatment area. 16) Upon completion of the NDDS soil treatment area, the area shall be seeded. Seeding shall be done in a manner that does not damage the system. Recommendations for seed mixes can be obtained from the local Natural Resources Conservation Service and/or the county public works departments responsible for grading, erosion and sediment control permitting. 17) In observing the construction of the NDDS, the engineer or system contractor shall utilize appropriate equipment to assure that the distribution laterals are installed within the elevation tolerances of ± two (2) inches. 18) Four (4) feet of vertical separation is required to subsurface materials or limiting conditions unsuitable for treating septic tank effluent. Examples of limiting conditions include: a) Fractured media which includes granite and gneiss and weathered or decomposed facies of the same b) Coarse gravel c) Permeable and jointed materials such as sandstone and shale. d) Seasonally high groundwater table 19) For sites without suitable soils necessary to meet the required four feet of vertical separation to subsurface materials or limiting conditions unsuitable for treating septic tank effluent, the requirements of sections 4.0.1, 4.0.2 and 4.0.3 shall be followed, as applicable. 20) System Sizing shall conform to section 4.0.4. 4.0.1 Fill with Existing Soils For sites without suitable soils necessary to meet the required four feet of vertical separation to subsurface materials or limiting conditions unsuitable for treating septic tank effluent, where a minimum of six (6) inches of existing suitable soils (exclusive of topsoil) are present above the limiting condition, the design engineer shall submit a fill plan that, at a minimum, addresses the following: 1. Removal and storage of topsoil. 2. Type of fill material to be placed and manner of placement, as follows: a. Fill material shall be of similar texture to the existing soils and shall be placed to achieve a similar density as the existing material. b. Fill side-slopes shall not be steeper that 3:1 (3 horizontal to 1 vertical) c. Methods of placement, to include lift thickness and level of compaction. d. Grade of fill to assure adequate drainage of precipitation runoff. 3. Testing of fill material, to include, at a minimum, percolation testing in the fill, to verify that the permeability is similar to the existing soils, and to establish a long term acceptance rate (LTAR). 3 4. Preparation of the surface of the existing soil, prior to placement of the fill, to include, at a minimum, scarification followed by placement and compaction of the fill material. 5. Replacement of topsoil, to include, at a minimum: a. Placement prior to trenching and placement of dispersal laterals, so that native soil, fill and topsoil can be mixed. 4.0.2 Fill with Minimal Existing Soils For sites without suitable soils necessary to meet the required four feet of vertical separation to subsurface materials or limiting conditions unsuitable for treating septic effluent, where less than six (6) inches of existing suitable soils (exclusive of topsoil) are present above the limiting condition, the design engineer shall submit a fill plan that, at a minimum, addresses the following: 1. Removal and storage of topsoil. 2. Type of fill material to be placed and manner of placement, as follows: a. Fill material shall be of similar texture to soil types 2A, 3A, or 4A, from Table 10-1 in CDPHE OWTS Regulation #43. b. Fill side-slopes shall not be steeper that 3:1 (3 horizontal to 1 vertical) c. Methods of placement, to include lift thickness and level of compaction d. Grade of fill, to assure adequate drainage of precipitation runoff 3. Preparation of the surface of the existing soil or limiting condition, prior to placement of the fill, to include, at a minimum, scarification followed by placement and compaction of the fill material. 4. Replacement of topsoil, to include, at a minimum: a. Placement prior to trenching and placement of dispersal laterals, so that native soil, fill and topsoil can be mixed. 4.0.3 Fill to Address Irregular Topography Where “fill” is required due to irregular topography which does not allow maintaining the pipe depth within the 12-inch to 30-inch limits, the installation shall include fill rather than cutting to level the ground. Cutting removes vegetation and root systems which are essential to the operation of NDDS. Where fill will be placed for these conditions, it must meet the requirements for fill described in 4.02 above. 4.0.4 System Sizing The minimum NDDS system area shall be calculated using the following formula1: 𝑵𝑫𝑫𝑺 𝑨𝒓𝒆𝒂=(𝑫𝒆𝒔𝒊𝒈𝒏 𝑭𝒍𝒐𝒘 ÷ 𝑳𝑻𝑨𝑹)× 𝑺𝒊𝒛𝒆 𝑨𝒅𝒋𝒖𝒔𝒕𝒎𝒆𝒏𝒕 𝑭𝒂𝒄𝒕𝒐𝒓 Where: NDDS Area1: Soil treatment area, in square feet Design Flow: Flow in gallons per day 4 LTAR: Long Term Acceptance Rate, in gallons per day per square foot, from Table 10-1 in CDPHE Regulation #43 Size Adjustment Factor: From Table 1 below 1The minimum area so calculated shall be comprised of the lateral trenches, the area between the lateral trenches, plus an additional one foot outside the outermost distribution laterals and the proximate and distal ends of the laterals. Each lineal foot of distribution lateral shall be the equivalent of two (2) square feet of NDDS area. TABLE 1: NDDS SIZE ADJUSTMENT FACTORS Soil Type Percolation Rate Size Adjustment Factor 3A 61-75 2.2 4 76-90 1.7 4A 91-120 1.5 5 121+ 1.4 Note: The December 2014 revisions to this document were to address necessary modifications to the “Size Adjustment Factor” for the design of a NDDS. These modifications were provided in order to more accurately associate the sizing of a NDDS under this document and Regulation 43 to the historic design criteria for this type of system. 5.0 SPECIAL REGIONAL AND LOCAL GEOLOGICAL CONDITIONS The soils analysis required in Regulation #43 is sufficient to characterize most subsurface conditions; however, for certain conditions, additional research, site evaluation and analysis are necessary. OWTS professionals need to understand the local geological conditions and how those conditions relate to the design, installation and performance of OWTS. While the standards noted in this document should address the majority of site conditions for the design of a NDDS, it is not the objective of this guidance to inform OWTS professionals how to design or review NDDS for all geological conditions in the State of Colorado. The CPOW NDDS Guidance Committee is aware that there are specific geological conditions which may require slight modifications to these design standards in order to ensure that the NDDS is properly designed. Guidance for these situations should be science based and the information provided should encompass as much technical data as necessary and to provide an avenue for consistency for designers and regulators in the future. Subsequent to a request by a few counties, CPOW has provided an example of such a document relative to the Dawson Arkose Formation located within the Denver Basin. For those OWTS professionals practicing within the Denver Basin, the Dawson Arkose information, located in Appendix A, should be carefully reviewed, understood, and applied. CPOW is available to assist any group which defines a geological condition that falls into the above noted category and warrants additional site-specific criteria. References: 5 Church, E. O., “Drip Irrigation Onsite Wastewater Systems – Colorado”, Site Characterization and Design of On-Site Septic Systems”, ASTM STP 1324, M.S. Bedinger, A. I. Johnson, J. S. Fleming, Eds., American Society for Testing and Materials, 1997) Natural Resources Conservation Service Field Book for Describing and Sampling Soils, National Soils Survey Center NRCS-USDA, September, 2002 (NRCS Field Book), July 31, 1995 letter from Office of the State Engineer Soister, Paul, “Stratigraphy of the Uppermost Cretaceous and Lower Tertiary Rocks of the Denver Basin”, 1978 6 APPENDIX A SPECIAL REGIONAL GEOLOGICAL CONDITONS IMPACTING THE DESIGN AND INSTALLATON OF NDDS The Dawson Arkose formation is found in the Front Range of Colorado within the hydrogeological area known as the “Denver Basin”. Figure 1, in the paper titled “Stratigraphy of the Uppermost Cretaceous and Lower Tertiary Rocks of the Denver Basin” illustrates the extent of the Dawson Arkose. Although cementation of the Dawson Arkose can vary from non- cemented to indurated, in some locations, the Dawson Arkose has the characteristics of Type 3A and 4A soils, from Table 10-1 in Regulation #43. If the Dawson Arkose is present on the site, the site evaluator shall determine whether it is suitable for the installation of NDDS, and provide a statement in the site evaluation report stating the characteristics of the Dawson Arkose that render it suitable. At a minimum, the site evaluator shall evaluate the following characteristics: 1. Whether the material is fractured and jointed 2. The cementation class of the Dawson Arkose. Using the cementation classes from the Rupture Resistance Table on page 2-50 of the Natural Resources Conservation Service Field Book for Describing and Sampling Soils, National Soils Survey Center NRCS-USDA, September, 2002 (NRCS Field Book), the following cementation classes will be considered suitable: Non-Cemented (NC), Extremely Weakly Cemented (EW), Very Weakly Cemented (VW), Weakly Cemented (W). The following cementation classes will be considered unsuitable: Moderately Cemented (M), Strongly Cemented (ST), Very Strongly Cemented (VS), Indurated (I). 3. The Dawson Arkose material within four vertical feet of the deepest infiltrative surface of the trenches. 4. The soil class from Table 10-1, as determined from the tests, as specified in Regulation #43, in order to determine the associated Long Term Acceptance Rate (LTAR). The table below summarizes characteristics 1 and 2 above. A “yes” answer to either question below means the material is unsuitable for the installation of a NDDS. DAWSON ARKOSE CHARACTERISTIC ANSWER (A YES ANSWER MEANS THE DAWSON ARKOSE IS UNSUITABLE) 1. Is material fractured and/or jointed? Yes / No 2. Is the cementation class, M, ST, VS, or I? Yes / No 7 September 27, 2015 Project No. C1116 Don Barr barrconstruction@comcast.net Onsite Wastewater Treatment System (OWTS) Installation Observations 22 Crown Mountain Drive Eagle County, Colorado OWTS Permit 12-14-11938 Don, ALL SERVICE septic, LLC observed the installation of the onsite wastewater treatment system (OWTS) on January 8, 2105 (tank) and August 5, 2015 (soil treatment area) for the subject property. Barr Construction and Wade Parr with CPR Services installed the system. The existing 1250-gallon poly septic tank was removed and the existing STA was left in place. A diverter valve was installed so that the existing STA could be utilized in the future. The installation included a new 1500-gallon, three-compartment Valley Precast concrete septic tank with an Orenco® Biotube Pump Vault and PF5005 pump in the third compartment. The control panel for the pump was placed within line of sight of the septic tank. The filter in the Biotube pump vault must be cleaned annually, or as needed. Valley Precast personnel performed start-up on the pump system. Effluent is dosed via a 1 ½-inch diameter transport line to an Orenco® Model 6404 automatic distributing valve (ADV) and then to four zones of Non-Pressure Drip Dispersal beds, each with seven 2-inch diameter laterals, 100-feet long. An air relief valve was placed at the high point on the 1 ½-inch diameter line from the tank to the ADV. The NDDS has been designed to completely fill 25% - 50% of the distribution laterals in each zone, each pump cycle; therefore, the pump floats have been set to dose approximately 100-gallons each pump cycle, with 13.46 gallons draining back from the transport line and 86.54 gallons entering the field each pump cycle. An inspection port, connected to the distal end of one lateral in each zone was installed. The OWTS was generally installed according to specifications. This observation is not a guarantee of workmanship and/or parts and materials. ALL SERVICE septic, LLC should be notified if changes are made to the OW TS 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 of the expertise of the installer, soil type, and weather conditions. Please call with questions. Sincerely, ALL SERVICE septic, LLC Reviewed By: Carla Ostberg, MPH, REHS Richard H. Petz, P.E. View of new septic tank Inlet tee Tee between second and third compartments Check valve replaced with ball valve Pump line going to new STA Pump line tee-ing into existing manifold NDDS pipe layout Pipe installation with trencher 2-inch diameter pipe with ¼-inch holes drilled 2-feet OC Work Classification:Replace CO Address Owner Information Permit Status:Active Project Address 246511302001 Permit Type:OWTS Permit Permit NO.OWTS-12-14-11938 Expires: 5/14/2015Issue Date:1/14/2015 Parcel No. 000022 CROWN DR EL JEBEL AREA, CO 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: (970)704-0484 Cell: Inspection For Inspections call:(970) 328-8755 Inspections: IVR PhoneEngineer(s) (970)704-0484All Service Septic Contractor(s)Phone Primary ContractorLicense Number BARR CONSTRUCTION Yes39-14 DON BARR Permitted Construction / Details: This OWTS authorized the installation of a new 1,500 gallon, 3-compartment Valley Precast tank with dose chamber in December of 2014 and is now being amended to authorize the installation of the non-pressurized drip dispersal system as designed by All Service Septic stamped, signed and dated January 12, 2015. System consists of the aforementioned tank and 5,500 square feet of soil treatment area credit via 2,750 lineal feet of dispersal pipe arranged in 6 zones that will receive alternating doses of effluent. Each zone consists of 7, 66 foot long laterals with 1/4 inch holes drilled in the 6 o'clock position every 8 inches buried between 12 and 30 inches deep. It is recommended to install the laterals as shallow as allowed by the engineer in order to have the effluent within oxygenated soil horizons to enhance treatment. Due to the soil types present on the site and the timing of installation during winter months, it will be necessary for the installer and the design engineer to discuss best installation practices to avoid smearing of the soil treatment area during installation. Do not install if soils are wet or frozen. Contact the design engineer to conduct all inspections necessary to certify the installation and to prepare the as-built drawing. System certification along with the as-built drawing and photos are required to be received and approved by Eagle County Environmental Health prior to the use of the system. The original system that this OWTS Permit replaces was permitted under ISDS #908. It is recommended to clearly identify the location of the effluent line of the old system for easy access in the future should the old field need to be used as a contingency. Issued by: Environmental Health Department, Eagle County, CO January 14, 2015 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:Replace CO Address Owner Information Permit Status:Active Project Address 246511302001 Permit Type:OWTS Permit Permit NO.OWTS-12-14-11938 Expires: 5/14/2015Issue Date:1/14/2015 Parcel No. 000022 CROWN DR EL JEBEL AREA, CO 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: (970)704-0484 Cell: Inspection For Inspections call:(970) 328-8755 Inspections: IVR PhoneEngineer(s) (970)704-0484All Service Septic Contractor(s)Phone Primary ContractorLicense Number BARR CONSTRUCTION Yes39-14 DON BARR Permitted Construction / Details: This OWTS authorized the installation of a new 1,500 gallon, 3-compartment Valley Precast tank with dose chamber in December of 2014 and is now being amended to authorize the installation of the non-pressurized drip dispersal system as designed by All Service Septic stamped, signed and dated January 12, 2015. System consists of the aforementioned tank and 5,500 square feet of soil treatment area credit via 2,750 lineal feet of dispersal pipe arranged in 6 zones that will receive alternating doses of effluent. Each zone consists of 7, 66 foot long laterals with 1/4 inch holes drilled in the 6 o'clock position every 8 inches buried between 12 and 30 inches deep. It is recommended to install the laterals as shallow as allowed by the engineer in order to have the effluent within oxygenated soil horizons to enhance treatment. Due to the soil types present on the site and the timing of installation during winter months, it will be necessary for the installer and the design engineer to discuss best installation practices to avoid smearing of the soil treatment area during installation. Do not install if soils are wet or frozen. Contact the design engineer to conduct all inspections necessary to certify the installation and to prepare the as-built drawing. System certification along with the as-built drawing and photos are required to be received and approved by Eagle County Environmental Health prior to the use of the system. The original system that this OWTS Permit replaces was permitted under ISDS #908. It is recommended to clearly identify the location of the effluent line of the old system for easy access in the future should the old field need to be used as a contingency. Office Copy January 14, 2015 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 832‐R‐13‐002 December 21, 2014 Project No. C1116 Ray Merry Eagle County Environmental Health Department Ray.merry@eaglecounty.us Onsite Wastewater Treatment System Design (Tank Installation Request) 22 Crown Mountain Drive Eagle County, Colorado Ray, ALL SERVICE septic, LLC performed a subsurface investigation and is working on completing an onsite wastewater treatment system (OWTS) design for the subject residence. The existing OWTS serving the residence has failed. As you are aware, there is some urgency to set the septic tank prior to the holiday in order to allow for limited use of the residence. We have calculated sizing criteria based on a 5-bedroom residence and Sandy Clay Loam soils. A Non- Pressurized Drip Dispersal System (NDDS) is being designed per criteria outlined in Colorado Professionals in Onsite Wastewater (CPOW Guidelines for the Design and Installation of NDDS, Revised December 11, 2014. Design Calculations: Wastewater Flow = Q = 75 gal/day x 2 people/bedroom x 5 Bedrooms = 750 gal/day 750 gal/day x 48 hour retention time = MIN 1500 gallon septic tank Q / LTAR 750 / 0.3 = 2500 SF x 2.2 Size Adjustment Factor = 5500 SF 5500 SF / 2 = 2750 lineal feet of drip dispersal pipe We are requesting Don Barr, the owner and Licensed Systems Installer, be allowed to install a 1500-gallon, 3-compartment Valley Precast septic tank on Monday. Specifications for this tank are attached. The tank has 1500-gallons in the first two compartments, and an additional 500-gallon compartment to house the pump that will be necessary for the system design. We are requesting this tank be used as a vault until the completed design can be submitted, reviewed, and permitted by Eagle County. The following factors have necessitated this request.  The existing septic tank is leaking at the gasket between the tank and the outlet sewer pipe;  The existing soil treatment area is completely saturated and has failed;  Sewage has backed up into the residence;  Richard Petz, P.E., ALL SERVICE septic, LLC will be unavailable to review the system design until after the holidays;  Valley Precast, the septic tank supplier, will be closed from 12/23/14 through 1/8/14; and  Orenco Systems Inc. (pump and part supplier) will also be closed through the holiday season. Please consider this partial installation for approval. Thank you! 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