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Home My WebLink About1055 Cottonwood Pass Rd - 211118300008Environmental Health Department P.O. Box 179 500 Broadway Eagle, CO 81631-0179 Phone: (970) 328-8730 Fax: (970) 328-7185 Permit Permit No. OWTS-023566-2022 Permit Type: OWTS Permit Work Classification: New Permit Status: Active Issue Date: 3/9/2022 Expires: 7/7/2022 On-Site Wastewater Treatement System Project Address Parcel Number 1055 COTTONWOOD PASS RD, GYPSUM AREA,211118300008 Owner Information Address Douglas Hill 1055c Cottonwood Pass RD Phone: Cell: Email: Inspections: For Inspections Call: (970) 328-8755 Engineer Phone Email Brock Civil LLC, Vern Brock (970) 471-2121 vern@brockcivil.com Contractor License Number Phone Email Brock Civil LLC vern@brockcivil.com(970) 471-2121OWTSPL-000177-20 22 Permitted Construction / Details: Install the new system exactly as depicted in the Brock Civil LLC design dated March 2nd, 2022, stamped and signed on March 1st, 2022 by Vern L Brock, PE. This system is designed to accommodate the maximum daily flows for the office auxiliary building with a full bathroom including a bath/shower, water closet, lavatory, laundry sink/washer and the wastewater for one commercial employee. A professional evaluation was conditionally provided to indicate that the existing system permitted under 2326-03 will be sufficient to support the addition of one bedroom to the main residence. This OWTS consists of one sewer line from the office. A Valley Precast, 1,000 gallon, two-compartment septic tank will be used with a bio filter in the outlet tee, equipped with an audible and visual high water alarm. The STA consists of one trench with 9 Infiltrator Quick4 Standard chambers. Contact Eagle County Environmental Health and the design engineer well in advance of requesting inspections prior to backfilling any component of the OWTS. The design engineer is responsible for conducting all inspections necessary to certify the installation and assure the functionality of the system. System certification, along with photos and a record drawing is required to be submitted to and approved by Eagle County Environmental Health prior to the use of the system. THIS PERIMT EXPIRES BY TIME LIMITATION AND BECOMES NULL AND VOID IF THE WORK AUTHORIZED BY THE PERMIT IS NOT COMMENCED WITHIN 120 DAYS OF ISSUANCE, OR BEFORE THE EXPIRATION OF AN ASSOCIATED BUILDING PERMIT Issued by: Environmental Health Department, Eagle County, CO Danielle Salinsky Date March 09, 2022 CONDITIONS 1. 2.ALL INSTALLATIONS MUST COMPLY WITH ALL REQUIREMENTS OF THE EAGLE COUNTY PUBLIC HEALTH AGENCY ON-SITE WASTEWATER TREATMENT SYSTEM REGULATIONS ADOPTED PURSUANT TO AUTHORITY GRANTED IN CR.S. 25-10-101, et seq., AS AMENDED 3.THIS PERMIT IS VALID ONLY FOR PERFORMING WORK ON OWTS ASSOCIATED WITH STRUCTURES WHICH HAVE FULLY COMPLIED WITH COUNTY ZONING AND BUILDING REQUIREMENTS CONNECTION TO, OR USE WITH, ANY DWELLING OR STRUCTURE NOT APPROVED BY THE ZONING AND BUILDING DEPARTMENTS SHALL AUTOMATICALLY BE A VIOLATION OF A REQUIREMENT OF THE PERMIT AND WILL RESULT IN BOTH LEGAL ACTION AND REVOCATION OF THE PERMIT 4.1.6(A)(1) EAGLE COUNTY PUBLIC HEALTH AGENCY ON-SITE WASTEWATER TREATMENT SYSTEM REGULATIONS REQUIRES ANY PERSON WHO CONSTRUCTS, ALTERS OR INSTALLS AN ON-SITE WASTEWATER TREATMENT SYSTEM TO BE LICENSED Wednesday, March 9, 2022 1 Inspection Result Eagle County, Colorado P.O. Box 179 500 Broadway Eagle, CO Phone: (970) 328-8730 Fax: (970) 328-7185 IVR Phone: 1-866-701-3307 Inspection Number: GYPSUM AREA - 1055 COTTONWOOD PASS - 527693 Permit Number: OWTS-023566-2022 Inspection Date: 12/04/2023 Inspector: Permit Type: OWTS Permit Inspection Type: OWTS Final Inspection Work Classification: NewOwner:Douglas Hill Job Address:1055 COTTONWOOD PASS RD IVR Pin Number:195418 GYPSUM AREA, CO Project:<NONE> Parcel Number:211118300008 Contractor:Phone: (970) 328-0876 / Cell: (970) 471-2121Brock Civil LLC Inspection Status: Approved Inspection Notes Inspector Comments Added Item: Septic Tank A Valley Precast, 1,000 gallon, two-compartment septic tank with a bio filter in the outlet tee, equipped with an audible and visual high water alarm was installed. Added Item: Record Drawing Received 10/28/2023. Added Item: Record Photos Received 12/4/2023. Added Item: Site and Soil Eagle County was not called to perform an inspection for this property. Added Item: Final Certification Letter Received 10/28/2023. Added Item: General Plan Received 3/4/2022. Added Item: Soil Treatment Area (STA) The STA consists of one trench with 9 Infiltrator Quick4 Standard chambers. Added Item: Identification of Systems Contractor Brock Civil was the licensed installer. Monday, December 4, 2023 For more information visit: http://www.eaglecounty.us Page 1 of 2 Monday, December 4, 2023 For more information visit: http://www.eaglecounty.us Page 2 of 2 Page | 1 PROGRESS PICTURES REPORT, COMPLETE, 12/2023 revised w/ 2 new pictures OWTS – 023566- 2022 WORK FOR BECKETT by General Contractor 1055B Cottonwood Pass Road EAGLE COUNTY, CO 81637 PN 2111-183-00-006 Constructed under direct supervision of Brock Civil, LLC PICTURE 1 double sweep cleanout in each direction. SCH 40 PIPE AT 2 % MIN. ¾” SCREEN ROCK BACKFILL. Page | 2 PICTURE 2 CONCRETE, ONE- PIECE SEPTIC TANK BY VALLEY PRECAST, SET ON 6 INCHES WASHED ROCK, LEVEL. BACKFILLED TO GRADE. CONCRETE LIDS PER MFGR. TAR AND GASKET AT TANK ENTRANCE. NO VEHICULAR TRAVEL OVER TANK OR PIPE. Page | 3 PICTURE 3 6” SCREEN ROCK BASE Page | 4 PICTURE 4 4” LINE TO TRENCH, NOTICE GRADUAL 2% SLOPE ON CONTOUR. Page | 5 PICTURE 5 STA TRENCH PRIOR TO QUICK-4 INSTALLATION, LEVEL ON CONTOUR. MAX DEPTH 3 FT. Page | 6 PICTURE 6 SURVEY TRENCH LEVEL Page | 7 PICTURE 7 FINAL GRADED TANK LIDS WITH TAMPERPROOF LIDS. Page | 8 PICTURE 8 FINAL GRADED CHAMBER TRENCH W/ INSPECTION PORTS. END PORT SEE UPPER RT PIC CORNER. TYPICAL GYPSUM SOIL WITH NATIVE REVEGATATION. Page | 9 THE FOLLOWING PROGRESSIVE PICTURES RECEIVED 11/08/2023 PIC 9; FROM OFFICE SPACE TO TANK BEFORE BACKFILL Page | 10 PIC 10; TANK INLET W/ BOOT & CLAMP; EXIT PIPE TO STA BEFORE BACKFILL. Page | 11 PIC 11; FROM TANK TO CHAMBERS. SHOWS CAULKING AT ENTRANCE TO Q-4. SHOWS DEPTH OF COVER 1-2 FT. NO ROCK IN BACKFILL SPOIL PILES. INSPECTION PORTS EACH END OF TRENCH. Page | 12 PIC 12; SHOWS SCREENED BACKFILL, CAUTION TAPE AT 2 FT COVER, 2 T0 2.5 FT DEPTH TO CAUTION TAPE. Page | 13 DELIVERY TICKET SHOWS 1,000 TOP SEAM CONCRETE 1,000 GAL TANK, (9) Q-4 CHAMBERS AND (2) END CAPS, BATTERY OPERATED LEVEL ALARM. Page | 14 PIC 13; BIOFILTER ON TANK. Page | 15 PIC 14; SEPTIC TANK EXIT PIPE WITH (2) 45 DEGREE BENDS. BEFORE PIC 12 SAME PIPE SECTION. Claire Lewandowski <claire.lewandowski@eaglecounty.us> OWTS - 023566-2022 FINAL CERT DOCS 6 messages Vern Brock <vern@brockcivil.com>Sat, Oct 28, 2023 at 7:34 PM To: "environment@eaglecounty.us" <environment@eaglecounty.us> Cc: "danielle.salinsky@eaglecounty.us" <danielle.salinsky@eaglecounty.us>, "kirk.weems@eaglecounty.us" <kirk.weems@eaglecounty.us>, Claire Lewandowski <claire.lewandowski@eaglecounty.us> Dear Environmental Health, Per your November 3, 2022 response to Alvaro Carrillo, there were some problems with progress pictures on his side, but finally can provide the attached documentation. Regards, Vern L. Brock, MS, P.E. vern@brockcivil.com 970-471-2121 P.O. Box 23 Eagle, CO 81631 3 attachments OWTS - 023566-2022 Cert Ltr scan stamped to ECEH 10 28 2023.pdf 513K OWTS OBSERVATION PICTURES REPORT BECKETT COTTONWOODPASS ROAD OCT 2023 .docx 3212K 1055 COTTONWOOD - SS1 - Septic RECORD DRAWING-17 AUG 2023.pdf 1336K Claire Lewandowski <claire.lewandowski@eaglecounty.us>Mon, Oct 30, 2023 at 7:08 AM To: Vern Brock <vern@brockcivil.com> Cc: environment@eaglecounty.us, Danielle Salinsky <danielle.salinsky@eaglecounty.us>, Kirk Weems <kirk.weems@eaglecounty.us> Received, thank you. I will see if I took any photos to add to this and get back to you. [Quoted text hidden] 2 attachments image001.jpg 11K image001.jpg 11K Claire Lewandowski <claire.lewandowski@eaglecounty.us>Tue, Nov 7, 2023 at 12:36 PM To: Vern Brock <vern@brockcivil.com> Cc: environment@eaglecounty.us, Danielle Salinsky <danielle.salinsky@eaglecounty.us>, Kirk Weems <kirk.weems@eaglecounty.us> Hi Vern, Looks like we did not get out on an inspection. The final cert and the photo compiled have different permit numbers and dates. Are these the correct photos for this permit? Also, you included photos from the old 2003 permit, can you comment on why or remove them? We need some photos of the installed distribution media, chambers, prior to backfill, can you provide those? Thank you [Quoted text hidden] -- Claire Lewandowski, REHS Environmental Health Manager Eagle County Public & Environmental Health she | her | hers 970-328-8755 (office) 970-328-8747 (direct) environment@eaglecounty.us www.eaglecounty.us “To succeed, planning alone is insufficient. One must improvise as well.” ― Isaac Asimov Vern Brock <vern@brockcivil.com>Wed, Nov 8, 2023 at 1:56 PM To: Claire Lewandowski <claire.lewandowski@eaglecounty.us> Caire, I found the discrepancy permit numbers that you mentioned. On a different, Is Alvaro Carrillo’s (Valleywide Builders and Remodelers) a licensed installer ? Would his license be under his name or his company ? Also, can you send me the application for the OWTS permit for this residence? Thanks Vern From: Claire Lewandowski <claire.lewandowski@eaglecounty.us> Sent: Tuesday, November 7, 2023 12:36 PM To: Vern Brock <vern@brockcivil.com> Cc: environment@eaglecounty.us; Danielle Salinsky <danielle.salinsky@eaglecounty.us>; Kirk Weems <kirk.weems@eaglecounty.us> Subject: Re: OWTS - 023566-2022 FINAL CERT DOCS Hi Vern, Looks like we did not get out on an inspection. The final cert and the photo compiled have different permit numbers and dates. Are these the correct photos for this permit? Also, you included photos from the old 2003 permit, can you comment on why or remove them? We need some photos of the installed distribution media, chambers, prior to backfill, can you provide those? Thank you On Mon, Oct 30, 2023 at 7:08 AM Claire Lewandowski <claire.lewandowski@eaglecounty.us> wrote: Received, thank you. I will see if I took any photos to add to this and get back to you. On Sat, Oct 28, 2023, 7:35 PM Vern Brock <vern@brockcivil.com> wrote: Dear Environmental Health, Per your November 3, 2022 response to Alvaro Carrillo, there were some problems with progress pictures on his side, but finally can provide the attached documentation. Regards, Vern L. Brock, MS, P.E. vern@brockcivil.com 970-471-2121 P.O. Box 23 Eagle, CO 81631 [Quoted text hidden] Claire Lewandowski <claire.lewandowski@eaglecounty.us>Wed, Nov 8, 2023 at 3:17 PM To: Vern Brock <vern@brockcivil.com> Cc: environment@eaglecounty.us Hi Vern, The permit number for this address is OWTS-023566-2022. I attached the application as requested. Alvaro or Valleywide Construction has never been licensed as an OWTS Installer in Eagle County. You were listed as the installer on the permit that was issued. Thanks [Quoted text hidden] Application.pdf 652K Vern Brock <vern@brockcivil.com>Wed, Nov 8, 2023 at 3:30 PM To: Claire Lewandowski <claire.lewandowski@eaglecounty.us> Cc: Vern Brock <vern@brockcivil.com>, Alvaro Carrillo <alvaro@valleywidebuilders.com> Claire, I corrected the OWTS number on the attached Progress Pictures Report and removed the undated polaroid looking pictures. Mr. Alvaro Carrillo said that he said he called the EH department for an inspection, but there may have been a language snafu on our behalf that he had to wait for confirmation of the inspection, and that pictures are not an exemption from inspection. Regardless, I am willing to attest that: the required number of chambers were installed correctly (based on measurement between the inspection ports – approx. 37 ft - and the attached delivery ticket); and the (9) Q-4 Chambers trench was on level grade based on my picture(s) and inspection; and the pipe and chambers were backfilled correctly based on the grading and final pictures; the backfill was void of large rocks (per numerous pictures and inspections); the 4 inch PVC outlet line from the septic tank to the Chambers had a discernable minimum 2% fall to the STA based on the pictures, job level and my inspection; I saw the PVC pipe and the Quick 4 Infiltrator Chambers on site during the work. The delivery ticket also shows zip ties were delivered for the proper securing of the Chambers. Please review the subject installation based on this new observation report, picture, delivery ticket and my certification that the intent of the Standard 43.4.F. was met at the time of construction. Let me know if you need anything else. Regards, Vern L. Brock, MS, P.E. vern@brockcivil.com 970-471-2121 P.O. Box 23 Eagle, CO 81631 “To succeed, planning alone is insufficient. One must improvise as well.” ― Isaac Asimov OWTS OBSERVATION PICTURES REPORT BECKETT COTTONWOODPASS ROAD REVISED NOV 2023 .docx 3268K P.O. Box 3644 Eagle, CO 81631 Cell 970-471-2121 Office 970-445-4646 vern@brockcivil.com 1055 B Cottonwood Pass Road, Gypsum, Colorado Septic Analysis for main house Date:March 4, 2022 Re:1055 B Cottonwood Pass Road, EAGLE COUNTY, COLORADO, 81637 To:Eagle County Environmental Health Department 500 Broadway, Eagle, CO 81631 Dear Environmental Health Department: This addendum to the septic permit is provided to supplement the proposed building permit for the addition of (1) bedroom to the existing residence (total 5) to be determined under separate permit, and to assist in the review of the original septic PERMIT CONDITIONS & REPORT (permit #2326-03) (March 2003) (report) to the existing regulations (CDPHE Reg 43) as adopted by Eagle County (2018). The parcel is a 39 Acre parcel with an existing residence served by an OWTS since 2003. It has a sloped wooded hillside, a benched area with about 10 percent slopes between structures, sloping to the east. The evaluation of the existing OWTS is as follows: Beckett Residence (Previous Hill Residence) 1055 B Cottonwood Pass Road Eagle County, CO PN: 2109-251-00-003 DESIGN CALCULATIONS FOR SEPTIC SYSTEM REFERENCES Eagle County Public Health Agency On-Site Wastewater Treatment System Regulations adopted July 10, 2018 (“Regulations”). Colo. Dept. of Public Health and Environment Regulation #43 5 CCR 1002-43. DESIGN FLOWS Number of bedrooms = 5 Number of persons per bedroom = 2 (design flow) Single Family Residential Design Flows = 75 gallons/day/person Q design = 5 bdrms x 2 persons/bdrm x 75 gallons/person/day = 750 gpd 2 | P a g e SOILS PROFILE (Visual and tactile investigation): Profile Holes (1) Textural Classification 0.0 to 1.0 ft Topsoil with heavy organics 1.0 to 8.0 ft Silty loam and sand, single grain structureless (USDA) No groundwater. No wetting of soils in profile holes PERCOLATION TESTS: The percolation of the soils from the original PERMIT CONDITIONS will be converted to the current regulations as required: Percolation 12 MPI, sandy silty soil, TL 1, LTAR = 0.80. The report Visual and tactile evaluation of the treatment soil indicates silty loam, sandy with a percolation rate of 16-25 Minutes/Inch. INFILTRATOR CHAMBER MOUND SYSTEM IN SERIAL TRENCH DISTRIBUTION Given this information, the residence would be best served by a chamber system in serial trench distribution, with a pressure dose (approx. 4x/day) Treatment Level 1 Effluent: Per Tables 6-3: 10-3. Surface of Soil Treatment Area (STA) shall be based on LTAR and not the percolation rate. Soil Treatment Area = Design Flow (gals/day)/LTAR gal/day/SF. Long Term Acceptance Rate (LTAR) is calculated as follows: ·According to Table 10-1, the LTAR is estimated to be 0.8 Gal/day/SF. ·Design Flow = 750 GPD/ 0.8 G/day/SF x (0.7) (Table 10-3) (Chambers)= 656 SF of Surface Treatment Area (STA) required. ·The original PERMIT CONDITIONS indicate 1275 sf of STA was constructed and verified by several parties in the final certification. Although it is not known the type and size of the chambers used, Permit, site and design conditions indicate that the STA will function with a greater treatment area due to the numerous turns and trenches constructed (8 total). The inherent design of the chambers will saturate and treat effluent at each connection between chambers before failing and flowing to the next trench. The total STA was calculated as 1500 square feet (SF). SEPTIC TANK: For a maximum 5-bedroom residential structure, Minimum Tank Capacity is 1,500 gallons in the first 2 chambers with a minimum of 48 hours of retention. The existing Valley Precast Tank 1,250-gal 3 compartment appears to meet water tightness per Section 9, ASTM C 1227-12. CHAMBER TRENCH CONSTRUCTION: Pictures and certification (s) from the original Permit Records and Department of Health indicate the chambers were installed according to manufacturer's recommendations. TOPSOIL CONSTRUCTION: Back fill over chambers was 12 inches of high organic topsoil and reseeded according to pictures of the Permit Records. 3 | P a g e SEPTIC TANK CONSTRUCTION: The septic tank is a 1,250-gallon concrete tank according to the tank invoice. Discussion with the OWTS contractor indicates it was installed level and with 6" sand gravel bedding, as well as the delivery pipe from the residence to the septic tank minimum 2% slope, SDR 35 used for all piping except he reports that the pipe is Schedule 40 under the driveway. Septic tank to have risers brought to final grade and shall have a secure locking mechanism. ALARM: A visual and audible alarm shall be incorporated into the controls and electrical connections. Alarm to be in an open area or area easily visible. NOTES: 1.The building sewer line from the house to the septic tank reported to have a minimum slope of ¼ inch per foot (2%). Bends in the building sewer were limited to 45 degrees. 2.Infiltrator Chambers reported to be installed according to the manufacturer's recommendations. 3.Vehicle traffic, animal concentrated loads and irrigation over the system is prohibited. Fencing advised. 4.Electrical requirements of alarm to be determined by Electrical Contractor prior to construction. 5.The Bio effluent screen shall be installed in the outlet tee of the second chamber with both tees visible from the access portals. Screen shall be maintained annually or as needed. 6.Pump septic tank every 2-3 years minimum to prevent deterioration of concrete and premature failure of surface treatment area. 7.Installer of these conditions must be licensed installer in Eagle County; see permit. APPROXIMATE DIMENSIONS TO FACILITIES ACTUAL (MIN. REQ'D) SEPTIC TANK TO BUILDING 50 FT (5 FT) SEPTIC TANK TO WATER LINE 100 FT (10 FT) SEPTIC TANK TO TRENCH 50 FT (10 FT) SEPTIC TANK TO SPRING/WELL N/A (50 FT) ABSORPTION TRENCH TO SPRING/WELL 105 FT (100 FT) ABSORPTION TRENCH TO BUILDING 90 FT (20 FT) ABSORPTION TRENCH TO WATER LINE 100 FT (25 FT) ABSORPTION TRENCH TO IRRIGATION N/A (100 FT) ABSORPTION TRENCH TO PROPERTY LINE N/A (10 FT) BUILDING SEWER TO WATER LINE 90 FT (10 FT) See 43.7, Table 7-1 for further information and requirements if changes are made to assure proper clearances. SUMMARY: 4 | P a g e 1)It is reported that the current OWTS is functioning properly with no back-ups or surfacing of effluent in the STA. 2)Based on the best available information and review, the existing 1,250-gallon septic tank is sufficient to serve the residence, providing annualized pumping and maintenance is employed. It must be understood by current and future owners that an OWTS is a “progressive failure” system where the actual service life is determined by actual usage and maintenance. 3)A biofilter shall be installed on the outlet pipe per current Regulations. 4)The septic tank shall have concrete risers extended to the surface with tamperproof mechanism installed per current Regulations. 5)An audible alarm shall be installed on the tank per the Regulations. 6)Additional inspection of the trenches shall be subsidiary to this review during seasonal (spring) conditions to determine the percentage of “progressive failure” in the respective trenches and reported to the owner and the Department of Environmental Health in written format. 7)It appears the OWTS meets all minimum dimensions to facilities per the Regulations. 8)It appears an alternate STA site is available on the parcel, although always subject to the regulations, design and construction constraints at that time. Regards, Vern L. Brock, MS, P.E. P.O. Box 3644 Eagle, CO 81631 Cell 970-471-2121 Office 970-445-4646 vern@brockcivil.com OWTS ADDENDUM TO THE DESIGN DRAWINGS SPECIFIC TO THE BECKETT OFFICE OWTS Date:March 4, 2022 Re:1055 B COTTONWOOD PASS RD., EAGLE COUNTY, COLORADO, 81637 To:Eagle County Environmental Health 500 Broadway, Eagle, Colo Dear Environmental Health: This addendum is provided to supplement the design drawings sent March 2, 2022, to assist in the review of the engineering drawings and calculations therein for the OWTS serving the Office auxiliary building at 1055 B Cottonwood Pass Road, Eagle County, Colorado. References to Regulation 43 (Reg 43) refers to the requirements of the Colorado Water Quality Control Commission’s Regulation No. 43 - On-site Wastewater Treatment System Regulation, 5 CCR 1002-43, adopted July 10,2018, or as adopted by Eagle County Environmental Health (EH), and all other Eagle County Land Use Regulations that may apply. FACILITY The parcel is a 39.99 Acre parcel with some benches on a generally up-sloping hillside. There is no active surface water on the property, but the dry gulches probably flow during spring run-off. The use is rural residential. The proposed office is auxiliary to the existing 4-bedroom residence, and resides about 300 ft to the north-east, on the lower bench. The proposed office will have a bathroom with a bath/shower, toilet, vanity. The STA is sized also accommodate a laundry washer. Total septic load is calculated at 90 GPD. That said, the on-site wastewater treatment system is best served by a gravity trench in series system with Infiltrator Chambers to properly treat the effluent. It was reviewed to have a pumped system to the Main House OWTS, but was rejected due to topographic issues, drain-back issues, check-valve maintenance, potential failure of the main house system (19 years old), excessive cost, noise, and potential freezing of the force main line. Contractor to clear trees as needed to prevent damage to the OWTS. 2 | P a g e ABSORPTION AREA The profile hole on the hillside soils was believed to be representative and consistent for the entire STA. Profile pit on the hillside did not have groundwater, and soils were not mottled, and absent of clay. The soils were determined to be Silt Loam with some sand, with a percolation rate of 12 MPI. This is consistent with the original OWTS permit conditions for soil type 2, Treatment Level 1. The original OWTS used an LTAR of 0.75. Due to potential flow variations, an LTAR of 0.60 GPD/ SF was utilized. For Treatment Level 1 (TL-1), the long-term acceptance rates by soil texture, soil structure and percolation rate, the LTAR would be 0.60 gallons per day per square foot (CDPHE, Table 10-1). There does not appear to have a limiting layer in the soil matrix that would cause the effluent to surface or move laterally. Reductions in the design flows included: Chamber Reduction = 30% (Factor = .70) The STA area chosen was evaluated to be the best location away from land features, water features and the OFFICE/ GARAGE dwelling. RESERVE STA A reserve STA is an area reserved for the condition and likeliness of the failure of the current designed OWTS. Inherently the STA - leach field is a “progressive failure” component, and its life span is based on both environmental and human factors affecting the biological treatment of the effluent. The OWTS would have a reserve area below and extending to the northeast of the proposed STA. No pump is required. 1,000 GAL 2-COMPARTMENT SEPTIC TANK The permit is for an auxiliary office and garage subsidiary to the 5-bedroom home. The septic tank is built by Valley Precast, with an alarm installed by the licensed. Visible and audible alarms to be tested prior to being connected to septic flows. Contact Valley Precast at (719) 395-6764 for service and warranty work. INSTALLATION All work required to be by a licensed septic installer in Eagle County and experienced with mound and dosing systems. Owner advised to obtain references. Connection to the tank to be fitted with SDR 35 pipe extensions, and one (1) “Fernco/Shear Guard” coupler at entrance to prevent breakage of pipe due to tank or soil movement. A bio filter (effluent screen) at the exit pipe per the Regulations. No over excavation allowed for septic tank or chambers. Install septic tank level on 6 inches of ¾” screen rock and 140 N filter fabric. All pipe to be solvent weld joints (gasketed push-on fittings not allowed). Connections between the tank and risers 3 | P a g e shall be sealed and watertight. Backfill and compact the pipe trench, septic tank and risers to manufacturer specifications. Use CDOT Class 6 Road base or ¾-inch screen rock for “shedding” all pipe and tank to prevent settlement. Install 2-inch rigid insulation above pipe at all areas of traffic or potential frost due to shallow pipe less than 4 ft depth. Risers to be to grade with tamperproof lids. SPECIAL GRADING Grading shown on SS1 is approximate and subject to field conditions. Additional fill may be required REQUIRED MAINTENANCE Annual or maintenance as needed includes, but not limited to: 1)Cleansing of the septic tank bio-filter AS NEEDED. 2)Pumping of septic tank. 3)Prevent all disturbance to the surface treatment area, including vehicles, humans and animals, and no non-natural watering. Fencing advised. SEPTIC TANK DIMENSIONS TO FACILITIES Separation to facilities is critical and the licensed installer is required to meet all minimum distances between components of an On-Site Wastewater Treatment System according to Table 7-1, Section 43.7 of Reg 43. Survey by others recommended. DEVIATIONS IN THE CONDITIONS OR CONFLICTING DESIGN TO THE REGULATIONS Notify the engineer of any deviations in the in-situ conditions or limitations to construct the OWTS in accordance with the design drawings, this addendum, or Reg #43 prior to commencement of the work subject to change. ENGINEERING INSPECTION REQUIRED The engineer shall be notified of all work, 48 hours in advance, to allow verification of the work meeting the design drawings prior to backfill. No pictures allowed by owner/contractor in lieu of engineering inspection – regardless of conditions or hardship(s). No substitutions or changes allowed without prior engineer approval. RECORD DRAWINGS REQUIRED OWTS contractor and electrical contractor to provide engineer record drawings of all work. In addition, provide “3-point” dimensions, and bearings of facilities in lieu of PLS 4 | P a g e survey. Provide record drawings to engineer a maximum of 30 days following completion to allow for final certification process and submittals to Environmental Health. Regards, Vern L. Brock, MS, P.E. PROGRESS PICTURES REPORT,COMPLETE,2023 OWTS –023566-2022 WORK FOR BECKETT by General Contractor 1055B Cottonwood Pass Road EAGLE COUNTY,CO 81637 PN 2111-183-00-006 Constructed under direct supervision of Brock Civil,LLC PICTURE 1 double sweep cleanout in each direction. SCH 40 PIPE AT 2 %MIN.¾”SCREEN ROCK BACKFILL. Page |1 PICTURE 2 CONCRETE,ONE-PIECE SEPTIC TANK BY VALLEY PRECAST,SET ON 6 INCHES WASHED ROCK,LEVEL.BACKFILLED TO GRADE.CONCRETE LIDS PER MFGR. TAR AND GASKET AT TANK ENTRANCE. NO VEHICULAR TRAVEL OVER TANK OR PIPE. Page |2 PICTURE 3 6”SCREEN ROCK BASE Page |3 PICTURE 4 4”LINE TO TRENCH,NOTICE GRADUAL 2%SLOPE ON CONTOUR. Page |4 PICTURE 5 STA TRENCH PRIOR TO QUICK-4 INSTALLATION,LEVEL ON CONTOUR. MAX DEPTH 3 FT. Page |5 PICTURE 6 SURVEY TRENCH LEVEL Page |6 PICTURE 7 FINAL GRADED TANK LIDS WITH TAMPERPROOF LIDS. Page |7 PICTURE 8 FINAL GRADED CHAMBER TRENCH W/INSPECTION PORTS.END PORT SEE UPPER RT PIC CORNER. TYPICAL GYPSUM SOIL WITH NATIVE REVEGATATION. Page |8 DELIVERY TICKET SHOWS 1,000 TOP SEAM CONCRETE 1,000 GAL TANK, (9)Q-4 CHAMBERS AND (2)END CAPS,BATTERY OPERATED LEVEL ALARM. Page |9 Professional Services March 1, 2022 Beckett Office/Garage 1055-B Cottonwood Pass Rd. Gypsum, CO 81637 PN: 2111-183-00-008 DESIGN CALCULATIONS FOR SEPTIC SYSTEM SURFACE TREATMENT AREA REPLACEMENT REFERENCES Eagle County Public Health Agency On-Site Wastewater Treatment System Regulations effective August 24, 2018 (“Regulations”). Colo. Dept. of Public Health and Environment Regulation #43 5 CCR 1002-43. DESIGN FLOWS TABLE 6-2 - Auxiliary Buildings by fixture type; Waste Water Commercial per employee (1) = 20 GPD (assumes in-house toilet) Bath/Shower = 15 GPD Lavatory = 9 GPD Laundry Sink/Washer = 20 GPD Water Closet (Toilet) = 24.8 GPD Q Design = 89 GPD SOILS PROFILE (Visual and tactile investigation): Profile Holes (2) Textural Classification 0.0 to 1.0 ft Topsoil with heavy organics 1.0 to 6.0 ft Sandy, Silty Loam 6.0 to 8.0 ft Scattered rock (< 10%) No groundwater. No mottling of soils in the profile holes to indicate that the highest seasonal water surface would impact the treatment area. No layers or interfaces that will interfere with effluent movement. Soil Type 2, Treatment Level 1. PERCOLATION TESTS: Visual and tactile evaluation of the treatment soil indicates Sandy, Silty Loam to Loam with a percolation rate of 12 Minutes/Inch. INFILTRATOR CHAMBER SYSTEM IN SERIAL TRENCH DISTRIBUTION Given this information, the creamery would be best served by a chamber system in serial trench distribution. Treatment Level 1 Effluent: Per Table 6-3: 10-3. Surface of Soil Treatment Area (STA) shall be based on LTAR and not the percolation rate. Soil Treatment Area = Design Flow (gals/day)/LTAR gal/day/SF. Long Term Acceptance Rate (LTAR) is calculated as follows: ·Silty Sand. According to Table 10-1, the LTAR is estimated to be 0.60 Gal/day/SF. ·Design Flow = 89 GPD/ 0.60 G/day/sf x (0.7) (Chamber Trench Reduction) (Table 10-3) = 104 SF. ·Using Standard Quick 4 Infiltrators; 104 SF/12 sf per Infiltrator = 9 Infiltrators. ·Trench shall be (1) run of (9) Infiltrators, TOTAL (9) ·Concrete 1000 gallon tank ·Chamber Product to be Infiltrator Systems, Inc. “Quick 4” Standard Chambers. SEPTIC TANK: A 1000 gal septic tank is sufficient and meets a minimum 48 hours of retention. Inlet side 687 gallons, Outlet 323 gallons. Water tightness per Section 9, ASTM C 1227-12. Inspection by licensed pumper prior to work. INSTALLATION Install all components to the required setbacks required by regulations. No over excavation allowed for trenches. CHAMBER TRENCH CONSTRUCTION: Install chambers onto undisturbed trench (approx) 3 ft X 36 ft bed level., in (1) runs of (9) chambers. Backfill the chambers and all voids between with native Sandy Loam (no cobbles) to top of chambers. TOP SOIL CONSTRUCTION: Back fill over chambers with 12 inches of high organic top soil and reseed to native vegetation. Do not compact top soil! SEPTIC TANK & PIPE CONSTRUCTION: Install septic tank bio-filter at exit pipe. Delivery pipe from the connex to the septic tank 2% slope. Risers to grade with tamper proof lids. ALARM:A visual and audible alarm shall be incorporated (added) to the septic tank. Alarm to be in an open area or area easily visible. NOTES: 1.Assemble and install the Infiltrator Chambers in the trenches according to the manufacturer's recommendations. 2.Avoid vehicle traffic, animal concentrated loads and irrigation over the system. Fencing advised. 3.The Septic System Installation shall be inspected by the Design Engineer prior to backfill. Pictures are not a substitution for inspections 4.All installations shall meet the rules and regulations of the Eagle County Environmental Health Department. 5.Electrical requirements of alarm to be determined by Electrical Contractor prior to construction. In general, all electrical to be 24” below grade. 6.A Bio effluent screen shall be installed at outlet tee and maintained annually or as needed. 7.Pump septic tank every 2-3 years minimum. 8.Installer must be licensed installer in eagle county; see permit. MINIMUM DIMENSIONS TO FACILITIES ACTUAL (MIN. REQ'D) SEPTIC TANK TO BUILDING 15 FT (5 FT) SEPTIC TANK TO WATER LINE 20 FT (10 FT) SEPTIC TANK TO ABSORPTION BED 100 FT (10 FT) ABSORPTION BED TO BUILDING 30 FT (20 FT) ABSORPTION BED TO WATER LINE 90 FT (25 FT) ABSORPTION BED TO IRRIGATION N/A (50 FT) ABSORPTION BED TO DRY GULCH 60 FT +/- (10 FT) BUILDING SEWER TO WATER LINE 20 FT (10 FT) See 43.7, Table 7-1 for further information and requirements if changes are made to assure proper clearances. SANDY LOAM OFFICE SEPTIC RECORDBROCK CIVIL, LLCPO BOX 3644EAGLE, COLORADO 81631OFFICE (970) 471-2121VERN@BROCKCIVIL.COMSS1 SHEET OFFICE SEPTIC RECORD DRAWING EAGLE COUNTY, CO1055 B COTTONWOOD PASSBECKETT GARAGEPN: 2111-183-00-008 OFFICE SEPTIC SITE PLANBROCK CIVIL, LLCPO BOX 3644EAGLE, COLORADO 81631OFFICE (970) 471-2121VERN@BROCKCIVIL.COMSS1 SHEET OFFICE SEPTIC SITE PLAN EAGLE COUNTY, CO1055 B COTTONWOOD PASSBECKETT GARAGEPN: 2111-183-00-008 111" 5" Flexible Boot 106" 53"56" 4" Butyl Rubber Sealant Top View Section View 68" 60" 20" Clear Access TANK ID 49" 19" 19"19" · · · · · · · · · · · · · 1,000 GAL 3 CHAMBER TANK RISERS TO GRADE ESTABLISH VEGETATIVE COVER ORIGINAL GRADE INFILTRATOR SYSTEMS INC. QUICK4 CHAMBER SLOPED SERIAL DISTRIBUTION DETAIL CROSS SECTION NOT TO SCALE 12" PLEASE NOTE: ALL INFILTRATOR CHAMBERS MAY BE USED IN THIS APPLICATION e INFILTRATOR SYSTEMS INC. QUICK4 STANDARD CHAMBER INSPECTION PORT 48"34" 12" (EFFECTIVE) 16 8.0 12" 34" QUICK4 STANDARD MULTIPORT END CAP 52" e KJB BCP INSTALLATION WITH VALVE BOX QUICK4 CHAMBER INSPECTION PORT TYPICAL INSTALLATION DETAIL (Not to Scale) 4" PVC PIPE CUT TO FIT SMALL VALVE COVER BOX OR IRRIGATION VALVE BOX AT GRADE ATTACH CAP OR THREADED CLEANOUT ASSEMBLY COMPACT SOIL BASE TO SUPPORT BOX USE HOLE SAW TO CUT OUT PRE-MARKED CIRCLE REST 4" PVC PIPE ON TOP OF INSPECTION PORT SEAT. SECURE IN PLACE WITH A DRYWALL SCREW 34"TANK SEPTIC QUICK 4 STANDARD CHAMBER SLOPE at 3:1 INFILTRATOR SYSTEMS INC. QUICK4 CHAMBER SAME END SERIAL DISTRIBUTION TRENCH DETAIL (PLAN VIEW) NOT TO SCALE ALARM SETTING TO PREVENT OVERFLOW PLEASE NOTE ALL INFILTRATOR CHAMBERS MAYBE BE USED IN THIS MANNER SLOPE at 3:1 TOPSOIL ESTABLISH VEGETATIVE COVER 12"-16" MOUND FOR PROPER DRAINAGE 6"-11" NATIVE BACKFILL 9" MINIMUM 18" MAXIMUM COVER INFILTRATOR SYSTEMS, INC : LEVEL OF INFILTRATION INFILTRATOR SYSTEMS CHAMBER 24"-36" 22"-34" NJ_HC_T_X_FZD.DWG PLACEMENT OF FILL MATERIAL WITHIN ZONE OF DISPOSAL DFH NJ_HC_T_X_FZD.DWG11/18/2004 NOT TO SCALE Infiltrator Systems, Inc.RevisedDate Scale ACAD No. Checked PLACEMENT OF FILL MATERIAL WITHIN ZONE OF DISPOSAL NATIVE TRENCH DETAIL 8' 1' CONCRETE PERFORMANCE SAND NON-CONFINING SPLASH PLATE @ ENTRANCE SHEET NOTES: 1)REFER TO MANUFACTURER FOR ADDITIONAL INSTALLATION REQUIREMENTS @ WWW.INFILTRATOR.COM FOR QUICK 4 SERIES PRODUCTS. 2)REFER TO VALLEY PRECAST FOR ADDITIONAL TANK, PUMPING AND CONTROL SYSTEM REQUIREMENTS @ WWW.VALLEYPRECAST.COM OR (719) 395-6764. 3)ALL SEPTIC ELECTRICAL TO BE BY VALLEY PRECAST OR OWNER'S MASTER ELECTRICIAN EXPERIENCED IN SEPTIC PUMPING SYSTEMS AND NEC REGULATIONS. 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