Loading...
HomeMy WebLinkAbout6054 Bellyache Rd - 210704101001INDIVIDUAL SEWAGE DISPOSAL SYSTEM PERMIT EAGLE COUNTY DEPARTMENT OF ENVIRONMENTAL HEALTH P.O. Box 179 - 550 Broadway • Eagle, Colorado 81631 Telephone: 328-7311 or 949-5257 or 927-3823 YELLOW COPY OF PERMIT MUST BE POSTED AT INSTALLATION SITE. PERMIT NO. 10.6'0 Please call for final inspection before covering any portion of installed system. OWNER: John McNally PHONE: 447-2408 MAILING ADDRESS: 275 Timber Lane, Boulder Co 80302 AGENT: PHONE: SYSTEM LOCATION: Lot 2 Bellyache II, 6054 Bellyache Rd. LICENSED INSTALLER: Hutchins Excavating LICENSE NO. 34-91 DESIGN ENGINEER OF SYSTEM: Mound system per engineer design INSTALLATION IS HEREBY GRANTED FOR THE FOLLOWING: GALLON SEPTIC TANK OR 1000 GALLON AERATED TREATMENT UNIT. DISPERSAL AREA REQUIREMENTS: SQUARE FEET OF SEEPAGE BED 563 SQUARE FEET OF TRENCH BOTTOM. SPECIAL REQUIREMENTS: COMMENTS: This house is currently being huilt as a 2 bedream Th€ TSOS—is s}ged fer a 3 bedrooms with the intention of adding on a 3rd bedroom at a later date. ENVIRONMENTAL HEALTH OFFICER: DATE: ?-,2 ` - V CONDITIONS: 1. ALL INSTALLATIONS MUST COMPLY WITH ALL REQUIREMENTS OF THE EAGLE COUNTY INDIVIDUAL SEWAGE DISPOSAL SYSTEM REGULATIONS, ADOPTED PURSUANT TO AUTHORITY GRANTED IN 25.10-104, C.R.S. 1973, AS AMENDED. 2. 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 CAUSE FOR BOTH LEGAL ACTION AND REVOCATION OF THE PERMIT. 3. SECTION III, 3.21 REQUIRES ANY PERSON WHO CONSTRUCTS, ALTERS OR INSTALLS AN INDIVIDUAL SEWAGE DISPOSAL SYSTEM TO BE LICENSED ACCORDING TO THE REGULATIONS. FINAL APPROVAL OF SYSTEM: (TO BE COMPLETED BY INSPECTOR): NO SYSTEM SHALL BE DEEMED TO BE IN COMLIANCE WITH THE EAGLE COUNTY INDIVIDUAL SEWAGE DISPOSAL SYSTEM REGULATIONS UNTIL THE SYSTEM IS APPROVED PRIOR TO COVERING ANY PORTION OF THE SYSTEM. INSTALLED ABSORPTION OR DISPERSAL AREA: SQUARE FEET. 67,04►G�_/ syslee-l" P��H1CdY 07e_ )04 INSTALLED SEPTIC TANK: D� GALLONS DEGREES FEET SEPTIC TANK CLEANOUT TO WITHIN 8" OF FINAL GRADE, OR: \ PROPER MATERIALSAND ASSEMBLY v YES NO COMPLIANCE WITH COUNTY/STATE REGULATION REQUIREMENTS: YES NO ANY ITEM CHECKED NO REQUIRES CORRECTION BEFOR FINAL APPROVAL OF SYSTEM IS MADE. ARRANGE A�R�E�-1. 'SPE/C/LION WHEN WORK IS COMPLETED. COMMENTS: Gee. �eCrsm co[It.n71,",. , /%%S�G�KO QS IifL�S/�ffJCU IDe, 3 /PiI4 A ENVIRONMENTAL HEALTH OFFICER: DATE: / rP/ e ENVIRONMENTAL HEALTH OFFICER: DATE: (RE -INSPECTION IF NECESSARY) RETAIN WITH RECEIPT RECORDS PERMIT APPLICANT/AGENT: OWNER: AMOUNT PAID: RECEIPT #: CHECK #: CASHIER: ISDS Permit # ,e�) & 0- 7- Building Permit # APPLICATION FOR INDIVIDUAL SEWAGE DISPOSAL SYSTEM PERMIT ENVIRONMENTAL HEALTH OFFICE- EAGLE COUNTY P.O. BOX 179 EAGLE, CO 81631 328-8730/927-3823(Basalt) PERMIT APPLICATION FEE $150.00 PERCOLATION TEST FEE $125.00 PROPERTY OWNER: MAILING ADDRESS: Z7� - mPEz ( 4}�j K.h�� ftZPHONE: 414 7-;a4o�3 APPLICANT/CONTACT PERSON: �i�� C� PHONE: 3 �' LICENSED SYSTEMS CONTRACTOR: ADDRESS: ****x***��rr�xxx,�x�xxxaxrercr��c�c�rr�r*t****rrrrrrr PERMIT APPLICATION IS FOR: 1>4 NEW INSTALLATION LOCATION OF PROPOSED INDIVIDUAL SEWAGE DISPOSAL Legal Description: JAM- z &14�ti4 Parcel Number: Z167-oL1 / _.bl -on / Physical Address: 1Zof(_- n �a BUILDING TYPE: - -- (Check j Residential / { ) Residential / ( ) Commercial / HOT TUB WATER CONSERVATION PLAN: TYPE OF WATER SUPPLY: Give depth of all PHONE: ( ) ALTERATION ( ) REPAIR SYSTEM: vis)0� Lot size: -9 applicable category) Single Family Number of Bedrooms Multi -Family* Number of Bedrooms Industrial* Type Yes ( ). No Yes ( ) No Well ('4 -spring ( ) Surface (-) Public ( ) Name of Supplier: wells within 200 feet of system: . *These systems require design by a Registered Professional Engineer NOTE: SITE PLAN MUST BE ATTACHED TO APPLICATION MAKE ALL REMITTANCEnPAYABLE TO: "EAGLE COUNTY TREASURER^ SIGNATURE: DATE: AMOUNT - PAID :�� RECEIPT#( CHECK # TIME LOG Travel Perc Final p DATE: - / 5 CASHIER:_ `-f re Of re; l5ge- 4J ----------- OT 4,4y"'al YA .15 �jv,!5e, K Curr4t 1,q .r4 4 Inter -Mountain Engineering Ltd. REVISED PERCOLATION TEST RESULTS DESIGN RECOMMENDATIONS FOR AN INDIVIDUAL SANITARY MZE7 SEWAGE DISPOSAL SYSTEM LOT 2, BELLYACHE RIDGE SUBDIVISION FILING NO. 2 PREPARED FOR COBURN DEVELOPMENT, INC. 2104 BLUFF BOULDER, CO 80304 PROJECT NO. 91200E AUGUST 1991 Box No. 978 • Avon, Colorado 81620 • 949-5072 Denver 893-1531 1420 Vance Street • Lakewood, Colorado 80215 • Phone: 232-0158 SCOPE 1 This report presents the results of percolation tests and provides design recommendations for an individual sanitary sewage disposal system for Lot 2, Bellyache Ridge Subdivision, Filing No. 2 in Eagle County, Colorado. SITE LOCATION AND DESCRIPTION The site is located in unincorporated Eagle County, south of Wolcott, Colorado. Th thirty five acre l 's partially wooded and generally drains to the south. The slope in the vicinity of the septic system is 12%. The distance from the septic system to the nearest downhill property line is approximately 200 feet. FIELD INVESTIGATION & SUBSURFACE CONDITIONS The field investigation was performed as a part of a Soils and Foundation Investigation for this lot. Two test pits were dug with a conventional backhoe. Less than 3 feet of topsoil was underlain by weathered, bedded sandstone to the maximum depth explored of 6.5 feet. The bedrock was hard and is anticipated to have little to no expansion potential. The backhoe used to excavate the test pits was unable to penetrate the bedrock past 5 to 6.5 feet. Percolation tests were performed on three test holes located in the vicinity of the proposed leach field. The holes were �. excavated to a depth at approximately 30 inches. 2 PERCOLATION TEST RESULTS Percolation test were performed in accordance with the procedures outlined in the Eagle County Individual Sewage Disposal System Regulations. Results of our test are as follows: Test Hole Minutes/ 1" Drop a 1 11 L 2 11 ,3 9 Average time for a 1" drop: 10.3 minutes. DISCUSSION Eagle County requirements for Individual Sewage Disposal Systems prohibit the use of conventional soils absorption systems �`- when bedrock occurs within four feet of the bottom of the bed. .typical leach field trench installations are 30 to 36 inches deep which would violate these regulations. The percolation rate of 10.3 minutes per inch is suitable for absorption fields. Several alternative systems were considered for the disposal of the effluent. They included an elevated mound system, and an evapotranspiration bed, both allowed by Eagle County regulations. An evapotranspiration bed relies primarily on liquid evaporation or transpiration by vegetation as a means of effluent disposal. These systems are generally more effective in sunny locations. The site is south facing, and would be suitable for an evapotranspiration bed, but a recent position taken by the State Water conservation Board regarding the concept of consumptive water 3 C� use has caused the county to reject this type of system on this site. VI'he elevated mound system is therefore the system of choice for this site. The system works by discharging the relatively clear effluent from a conventional septic tank into a stone and sand bed which is built up from the existing ground surface. Elevating the bed provides enough clearance over the underlying rock to provide adequate bacteriological treatment of the effluent. The treated effluent gradually works its way downhill and in dispersed by a combination of soil percolation and evaporation. On this site there is ample distance from the proposed mound downstream to the property line for the necessary biologic activity to occur. The client has specified this location for the mound. It is suitable, but dictates to some degree the shape of the mound and the elevation of the lowest portion of the proposed house which can be sewered. Mound systems need to be carefully built to preserve the existing soil characteristics under the mound. Included in this report are guidelines for construction of the system. DESIGN CRITERIA A single family residence is planned for this site. The house will hav ree bedrooms, an automatic washer and a garbage disposal. The system will be designed in accordance with the procedures outlined in the Eagle county Regulations and as 4 supplemented by the 1980 EPA Design Manual "Onsite Wastewater Treatment and Disposal Systems". The following criteria will be used: \Occupancy = 2 persons per bedroom Average Flow = 75 gallons per person per day (GPCD) which includes an Automatic Washer and a Garbage Disposal. Peak Flow = 130% of average flow DESIGN CALCULATIONS Average Flow: Q= 2 persons x 3 bedrooms x 75 GPCD IvQ = 450 gallons per day (GPD) Peak Flow: Qp = 450 GPD x 150% �Qp = 675 GPD Mound Design: Absorption Bedf rea, Use 1:2 GPD/ftz (EPA Table 7-8) 675/1.2 Absorption Bed Dimensions: From given site criteria and ground contour locate bed 7' northerly of spot elevation No. 48, 50' in length, and parallel to the ground contour. This locates the mound approximately 50' south and downhill from the house. Then 563 _ 50 = 11.5, use 11.5' width x 50' length Set the bed thickness at 0.8' construct the absorption bed of 3/4" to 2,1/2" clean rock over clean medium sand with the following gradation: >25% 0.25 - 2.0 mm <30-35% 0.05-0.25 mm <5-10% 0.002-0.05 mm Mound Dimensions: From EPA Table 7-9 set the sand fill depth under the high edge of the bed at 1.0 feet, the cap depth at the edge of the bed at 1.0 feet, and the cap depth at the center of the bed at 1.5 feet. Set the finish grade slope around all sides of the mound at 3:1. �-- 5 Utilizing an average existing ground slope under the mound of 12% and following the EPA design procedure yields mound dimensions as shown on the attached drawing with an overall length of 74 feet and a width of 40 feet. Pipe Sizing: The appropriate sized dosing siphon will discharge at a rate of 100 to 160 gpm. A 4" plastic pipe at 2% grade from the siphon outlet to the mound will deliver this flow. The absorption bed dimensions accommodate 6 laterals 23' long fed from a central manifold connected to the 4" discharge pipe. Each lateral then discharges 17 gpm to 25 gpm From EPA Table 7-13 select 3/8" diameter holes discharging 1.66 gpm/hole at 1.0' of hydraulic head. At 24" spacing each 23' lateral will have it holes. From EPA Figure 7-28 with 3/8" holes at 2' c-c and lateral length of 23' the lateral diameter is 1 1/211. From EPA Figure 7-29 with a central manifold length of 4' and per lateral flow of 17 gpm to 25 gpm to manifold diameter is 311. From table 4 (section 4.07.01 of the Eagle County Regulations) a 1,000 gallon septic tank will be required for this system. The specified dosing chamber will allow for periodic high rate discharge to the drainage field instead of a slow trickle. This will prolong the life of the field. Fluid Dynamics company model 423 automatic dosing siphon provides the required flow. Peak Flow Doses Per Day = 675 _ 180 = 3.75 1po0 5 ".'11M ? _ea5 tom SEPTIC SYSTEMS RECOMMENDATIONS 6 Based on the proceeding calculations, it is recommended that a 1,OOO gallon compartmented septic tank followed by a l� 8o crallon dosing tank and siphon be installed. The effluent should be disposed of in a 563 square foot elevated absorption bed. Details of the proposed system are shown on the enclosed drawing. An inspection of the system should be made by a representative of the Eagle county Environmental Health Department prior to back filling. The installation and material specifications must comply with the Eagle County Individual Sewage Disposal system Regulations. VA CONSTRUCTION a. Site Preparation Good construction techniques are essential if the mound is to function properly. The following techniques should be used.: Step 1: Rope off the site to prevent damage to the area during other construction activity on the lot. Vehicular traffic over the area should be prohibited to avoid soil compaction. Step 2: Stake out the mound perimeter and bed in the proper orientation. Reference stakes set some distance from the mound perimeter are also suggested in case the corner stakes are disturbed. Step 3: Cut and remove any excessive vegetation. Trees should be cut at ground surface and the stumps left in place. Step 4: Measure the average ground elevation along the upslope edge of the bed to confirm the bottom elevation bed. Contact the Engineer if there are discrepancies. Step 5: Install the delivery pipe from the dosing chamber to the mound. Lay the pipe below the frost line. Back fill and compact the soil around the pipe. Place soil over the pipe in the vicinity of the mound as necessary for frost protection. Step 6: Plow the area within the mound perimeter. Use a two bottom or larger moldboard plow, plowing 7 to 8 in. deep parallel to the contour. Single bottom plows should not be used, as the trace wheel runs in every furrow, compacting the soil. Each furrow should be thrown upslope. A chisel plow may be used in place of a moldboard plow. Roughening the surface with backhoe teeth may be satisfactory, especially in wooded sites with stumps. Rotatilling is not recommended because of the damage it does to the soil structure. Plowing should not be done when the soil is too wet. Smearing and compaction of the soil will occur. If a sample of the soil taken from the plow depth forms a wire when rolled between the palms, the soil is too wet. If it crumbles, plowing may proceed. r 8 b. Fill Placement Step 1: Place the fill material on the upslope edges of the plowed area. Keep trucks off the plowed area. Minimize traffic on the downslope side. Step 2: Move the sand fill material into place using a small track type tractor with a blade. Always keep a minimum of 6 inches of material beneath the tracks of the tractor to minimize compaction of the natural soil. The fill material should be worked in this manner until the height of the fill reaches the elevation of the top of the absorption bed. Step 3: With the blade of the tractor, form the absorption bed. Hand level the bottom of the bed, checking it for the proper elevation. Shape the sides to the desired slope. C. Distribution Network Placement Step 1: Carefully place the coarse aggregate in the bed. Do not create ruts in the bottom of the bed. Level the aggregate to a minimum depth of 6 inches. Step 2: Assemble the distribution network on the aggregate. The laterals should be laid level. Step 3: Place additional aggregate to a depth of at least 2 inches over the crown of the pipe. Step 4: Place a suitable backfill barrier over the aggregate. d. Covering Step 1: Place a finer textured soil material such as clay or silt loam over the top of the bed to a minimum depth of 6 inches. Straw may be placed over this layer to the bottom of the topsoil. Step 2: Place 6 inches of good quality topsoil over the entire mound surface. Step 3: Plant grass over the entire mound using grasses adapted to the area. Shrubs can be planted around the base and up the sideslopes. Shrubs should be somewhat moisture tolerant since the downslope perimeter may become moist during early spring and late fall. Plantings on top of the mound should be drought tolerant, as the upper portion of the mound can become dry during the summer. 9 CONCLUSIONS This report has been prepared for the exclusive use of Coburn Development, Inc., for the specific application to the proposed single family home on Lot 2, Bellyache Ridge Subdivision Filing No. 2, Eagle County, Colorado. The findings and recommendations of this report have been obtained in accordance with accepted professional engineering practices. here is no other warranty either expressed or implied. call. l If we can be of further assistance, please do not hesitate to Sincerely, I -MOUNTAIN ENGINEERING, LTD. Duane Fehringer, P.E. & P.L.S. SURVEY SURT PO/NT /9/IDUA/D PROP0550 2 BEDROOM /-/O U S E P47/O 4 " PVC D/SCIU,gC7E /0/,0E -- 7� 3 aj epl*gj 50 GQL L OIV SEPT/C NK W/i h/ /BO 4!;�ILLON DOS/A/C, S/p!-/011 :4,5415 T/ VE m sUR vE Y PO//v7 4c L aT 2, BELLYACHE Y 77/ 9/ 9/ZOO E E.41?TW COVET OVER - A40UNO 111*�--D/5CAMA7C-E 0/PE "PVC Lr 2.0 PIPE ,� Lo 14,4"I FO L D -=. 69.5 13 EXIST. 64'041"0 .�!/N. FLOOR ELEV. = 74.0 INLET ELEV. SECT/ON TI-/ROUC71-/ SYSTEM S/ANON OUTLET---=-72.0 ELEi! = G9.tif 750 G4LLON SEPTIC _T<1Nf( GV/TH /Bd E,t1LLON LOOS/�c/G S /P//O Al 4„DISCHAR6E p/PE 011C L�1TER,riLSXz3 d 2, ,01/6 M4All -ZZ —y} ABSORP YOU 4' BED rF Av 0 ppf7 Ro b'd° SO' /2 ' . N 7.4 _ MOUNO LAYOUT Z07' Z, BELLY,4C1-IE II 7• 1/• 9I 9/200 E CENTRAL MANIFOLD DISTRIBUTION NETWOR K Distribution. Lateral,-, _ Manifold . -----End Cap Network Layout Cross From Dosing Chamber Lateral - 1 I/� ° Cap 3" PVC Manifold 3/Bf�Holes Spaced z" 2 Ft. LOT 2, BELLYA.GHE IL _7.11. 91 9 1200Ir DETAILED SCHEMATIC OF ' MOUND SYSTEM Layer of Straw or Marsh Hay Sandy Lorain Soil • .. •. .-I.. -+• � if � " i� • •k.: =� Clean Rock Sand Fill '� 4 .• .,•,iyl%"cn.a l.tlaa Slope �..::. 11/2" Perforated .Laterals Diversion for ace Water ��4.L.� `.r wt •:L v - 4 " PVC FROM SIPHON 6" Topsoil .,�,v�+1`s7V'yis",.Y.+�Yi _ rL-r r}+�-"'•��`ct�!`Sr�:=:N't•:=r Sod Layer .: • "[� �.-;-_'''� = 4->''_%:- Broken Up �•i_—.ate 1 � r►�-�-`�i1 � •f-��.' -r^� � � . �i 'd •~ Straw or Perforated Clay Fill or Medium Sand Fill Pipe Topsoil :v vriii ``yy//�tenl � !.y _�� Y/fir`- • • • oil — — - - — ubs i I Plowed Surface 3/4-21/2 in. Rock slope Cross Section LOT 2, BELLYACI-IF_ ]_ 7•II.91 91200E CL.05ES7 PRcQE-4 TY LIIJE- -ro 4"F uSE .ctiPRZox 230, FT, DK co LO Cp IFXISTINCj / D 1 R.T TRA i / ELF—\/ coy, P"., A15 f'EN -.�r 0 IK rEgineeringLtd, -Mournta in December 3, 1991 Coburn Development Mr. Jimi Coburn 2104 Bluff St. Boulder, CO 80304 Re: Last 3, Bellyache Ridge Subdivision Filing No. 2 Eagle county, Colorado Project No. 91200E Gentlemen; On two occasions in October 1991 I observed the construction status of a septic system under construction on the referenced property. The system was being constructed as described in the Inter-Mrunta.in Engineering report entitled 'Revised Percolation Test Results, Design Recommendations for an Individual sanitary and Sewage Disposal System, Lot 21 Bellyache Ridge subdivision Filing No. 2, Prepared for Coburn Development, inc. The system is a dosed mound system as described in the report. My two site inspections were at the point where the earth beet had been prepared for the fill sand (which was on -site) and at the point where the perforated distribution laterals were in place on the rock absorption bed and ready for building paper and earth covering. In both instances the construction was per the plan and workmanlike. In our opinion these two observations were dome at the most appropriate moments during the construction, and we believe that the installation is proper. It is noted that grain size distribution which you provided to us met the report specification for medium sand. If you have any questions, please cal . sin y, Gray earson, P.E. Box No. 978 . Avon, Colorado 81620 • 949-5072 Denver 893.1W1 1420 Vance Street • Lakewood, Colorado 50215 a Phone: 232-0158 1920 13th Street • " Suite B • Boulder, Colorado 80302 (303) 442-3351 JOB NAME, o ,toe Na. JOB LOCATION BILL TO DATE.STARTED DATE COMPLETED DATE BILLED JOB COST SUMMARY TOTAL SELLING PRICE TOTAL MATERIAL TOTAL LABOR INSURANCE SALES TAX MISC. COSTS TOTAL JOB COST GROSS PROFIT LESS OVERHEAD COSTS % OF SELLING PRICE NET PROFIT JOB FOLDER Product 278 ®® NEW ENGLAND BUSINESS SERVICE, INC., GROTON, MA 01471 Printed in USA JOBF�O,o 12/19/22, 2:31 PM Eagle County Government Mail - 47 chelsea A 7 https:Hmail.google.com/mail/u/0/?ik=17e3ef6ed6&view=pt&search=all&permthid=thread-f%3Al 752667502339713460&si m pl=msg-f%3Al 7526675023... 2/2 12/19/22, 2:31 PM Eagle County Government Mail - 47 chelsea '7�`91alG4.a 1N3W8013A30 XIINOW00 A1N(100 Z66V L Z add W AI3038 1N3;Vd 013A30 AI'Vn00 3 9b3 WW00 Z661 1 Z ddb 03A 13038 https://mail. google.com/mai Vu/0/?i k=17e3ef6ed 6&view=pt&sea rch=all&permth id=th read-f%3A l 752667502339713460&si m pl=msg-f%3A l 7526675023... 2/2 12/19/22, 2:31 PM Eagle County Government Mail - 47 chelsea ECHDA Closing Instructions for 47 Chelsea final.docx r r •4 https://mail.google.com/mail/u/O/?ik=l 7e3ef6ed6&view=pt&search=all&permthid=thread-f%3A1752667502339713460&simpl=msg-f%3A17526675023... 2/2 12/19/22, 2:31 PM Eagle County Government Mail - 47 chelsea ECHDA Closing Instructions for 47 Chelsea final.docx -0 https://mail.google.com/mail/u/0/?i k=17e3ef6ed6&view=pt&search=all&permthid=thread-f%3A1752667502339713460&simpl=msg-f`/`3Al 7526675023... 2/2