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HomeMy WebLinkAbout1.15 Barn OWTS Adequacy 08.31.2016!ii!IPESOURCE ■ ■■EE ■ ■■■■ E N G 1 N E E R I N Q I N C_ Don Fielmich 4006 County Road 115 Glenwood Springs, CO 81 601 d1helmich sapris.net RE: 4006 County Road 115 —Barn OWTS Adequacy Dear Dori: August 31, 2016 The most common way to treat and dispose of wastewater generated from rural homes is through the use of an onsite disposal system. Onsite disposal systems are typically a septic tank followed by a leach field_ This type of onsite disposal system is approved for use in Garfield County. Pursuant to your request, Resource Engineering, Inc. (RESOURCE) reviewed the adequacy of your Onsite Wastewater Treatment System (OWTS) that services a studio apartment 1 art studio located within a barn on your property located at 4006 County Road 115 in Garfield County.' The OWTSconsists of a 1.000 gallon septic tank and a leach field that has 462 feet of absorption area from 15 infiltrators and was previously permitted in 1996.2 There have been no reported problems with your OWTS, which indicates that it is functioning properly and is well maintained (i.e. septic tank pumping). To determine if the existing OWTS is suitable for the existing uses, RESOURCE examined the original calculations and sizing criteria and compared them with State of Colorado OVVIS regulations that were adopted by Garfield County in 2014 (Resolution No. 14-22). While these regulations only apply to new and repaired wastewater treatment systems, it provides for a useful tool in review the adequacy of the existing system as the calculations are different. Studio apartment occupancy is generally considered to be one bedroom or two persons with a design tiow totaling 150 gallons per day The required soil treatment area is a function of this design flow divided by the long terrn acceptance rate (LTAR) of the soil_ According to the United States Department of Agriculture (USDA) web sail survey, sails in the area primarily consist of !cares and clay loams. These soil types are consistent with the percolation tests that were previously Conducted on the site and have a LIAR of 0.35 gallons per day per square foot. This equates to a sail treatment area of approximately 430 square feet The following table summarizes the required septic tank and leach field (pursuant to adopted 2014 regulations) and compares it to the as-construdted OWTS. Septic Tank (gallons) Adsorption Area (required) [installed) (reauiredl finstallett) c 1,000 1,000 430 sq. ft. 462 sq. ft. As shown in the table above, the OWTS is adequately sized for the studio apartment f art studio. The septic tank size is sufficient for a two to three bedroom accessory dwelling unit. ' A separate OWTS provides s4wwer service 10 the min residence, is properly sized, and is not the sub}ect of this report. Garfield GcFunty Building and Sanitation Department Perirtit No. 2592. For additional perrnd information, inc cndirng application; percolation testa, and leach field sizing, see Attachment A. C:onoulting Engineer -s rid l--lydrologi is 909 Colorado Avenue • [ enwood Springs. CO 91 601 • [97O) 9455777 • Pax [9 1137 Don Hmich Barn OWTS Adequacy Page August 31, 2016 However, the leach field will need to be enlarged for any wastewater usage above 150 gallons par day. trust that this is the information you require. Please call if you have any questions or need additional information. Sincerely RESOURC NGINEERING, INC. Eric F. Mangeot, P.E. Water Resources Engineer EFM/1473-1.0; Attachments RESOLIFICE ATTACHMENT A Onsite Wastewater Treatment System Information 0 9-C • 4006 County Studio & Storage s3. 0 CO w! Mt 0.--f rn f1.4 .r N. 0 ii t -I ' 1 44C4 1 C co 0 u 0 4-4 11. I o "'TYPE QF INDIVIDUAL SEWAGE DISPOSAL SYSTEM PROPOSED: (14 SEPTIC TANK ( ) AERATION PLANT ( ) VAULT ( ) VAULT PRIVY ( ) COMPOSTING TOILET ( ) RECYCLING, POTABLE USE ( ) PIT PRIVY ( ) INCINERATION TOILET ( ) RECYCLING, OTHER USE ( ) CHEMICAL TOILET ( ) OTHER - DESCRIBE FINAL DISPOSAL BY j' ABSORPTION TRENCH, BED OR NT ( ) EVAPOTRANSPIRATION ( ) UNDERGROUND DISPERSAL ( ) SAND FILTER ( ) ABOVE GROUND DISPERSAL ( ) WASTEWATER POND ( ) OTHER - DESCRIBE WILL EFFLUENT BE DISCI -LARGED DIRECTLY INTO WATERS OF THE STATE? A -- - PERCOLATIONN J ST SO. (To be completed by Registered Professional Engineer, if the Engineer does the Percolation Test) Minutes___. per inch in hole No. I Minutes per inch in hole NO, 3 lvlinutes_per itch in hole Na- 2 Minutes per inch in hole NO, Name, address and telephone of RPE who made soil absorption tests: Name, address and telephone of RPE responsible for design of the system: - Applicant acknowledges that the completeness of the application is conditional upon such further mandatory and additional tests and reports is may be required by the local health department to be made and furnished by the applicant or by the local health dopa .mens for purposed of the evaluation of the application; and the issuance of the permit is subject to such terms and coalitions as deemed neck to insure compliance with rules and regulations made, information and reports submitted herewith and required to be submitted by the applicant are or will be represented to be true and correct to the best of my knowledge and belief and are designed to be relied on by the local department of health in evaluating the same for purposes of issuing the permit applied for herein 1 further understand that any falsitcatian or misrepresentation may result in the denial of the application or revocation of any permit granted based upon said application and in legal action for perjury as provided by law Sign Date PLEASE DRAW AN ACCUPQAY TO YOUR PROPERTY'I 3 INDIVJD UAL SEWAGE DISPOSAL SYS TE I APPLICATION OWNER _ el5517_n:". ADDRESS If, Al PHONE 9- _. CONTRACTOR 1 f G�d ADDRESS 46'' i6 / 611,6, ee, ezebeffr7 pliDNE f / - Z7556 PERMIT REQUEST FOR qr NEW INSTALLATION ( ) ALTERATION ( ) REPAIR Attach separate sheets or report showing entire area with respect to surrounding areas, topography of area habitable building, location afpot able water wells, soil percolation test holes, soil profiles in test holes (See page 4) LOCA ON tF RIX/POSED FACILITY; Near what City of To .. `+ Description or Address ' r �s ' 4" 88 POT' eif TRANSIENT447 USE ( ) COMMERCIAL OR INDUSTRIAL ( ) NON-DOMESTIC WASTES ( ) OTHER - DESCRIBE � � S BUILDING OR SERVICE TYPE:4"40 -AfriSitar Number of Bedrooms_ _ Number of Persons WE: T 'l 4 DW LL G + r ( ) Garbage Grinder ( ) Automatic Washer ) Dishwasher ,SOURCE AND TYPE QF W `. 5 ' I- cop WELL ( ) SPRENG ( STREAM OR. CREEK If supplied by Community Water, give ntume of supplier: _ DISTANCE TO NEAREST COMMUNITY SEWER SYSTEM: :-ffliktr Was an effort made to connect to the Community System?: plan is required to be submitted tkpi Indkitakthe fojlawfing MINIMUM distanesi Leach Field to Well: 100 feet Septic Tank to Well: S8 feet Leach Field to irrigation Ditches, Stream or Water Course. 50 feet Septic System to Property Lines: 10 feet WITH UTA ITE FLAN. GROUND CONDITIONS; Depth to first Ground Water.T b1c Percent Ground Slope cg.,X 2 1•C •4 1 r T. + • . ..}+... . y , GARFIELD cOtIN Y OUJtt.DIN'G AND SANITATION DEPAiiRIA 101E bIli Street Salts 803 Oleetwood Bpd grrF. Colorado dti Ply 1 546-1212 INDIVIDUAL SEWAGE DISPOSAL PERMIT PROPERTY Robert Walker 1006 CR 115, ilenxiooc Chwowea Nemo - Preeard real Pim no 006 County Rc8d 115, Cianwood springs Psrr'Ii'h 2692 Aaisati4r`e Parcel No. Tilt does not corifituta • a building or alae permit. Bream Location 945-1311 l.epar Danceipiion Of Asaaaaot"s Pared No. SYSTEMSION {/ V Srtic Tenk drily (flagon) Sr of "-Ask).s ,tA < Parr 1i 10 a dila (rolnarlsiI neh# Required .Menrplioii Arai - 8.1 Attached spec] se 'back FteruItorments: Data. � ;Si` Irripector PL.WA.L SYSTEM INSPECTION AND APPROVAL (as Installed) I rlll for Inspai tUOn (24 hours notice) Before`(ov*0n12 41LiUdllatloul Ofltadr Diner 7 n a as cry - /.6.7f , a - .►a V a $1.71lied, Miner otiiaielirnl (or *Marl -1...w,.-r /5 1-71 # exec, Sista re !notelet Sap1Io Took Capacity Sepl I c Te nk hilanutietUrer or Tirade Nome C i \ ('.I-.lt. &opirc Tank Access vo4hInt $" of ++prase Abaci Minn Arra Li C.2 Ab arprlon Area Type andWUF filanufavlorar or Trade Nemo ht t G Tit A7 -_ Adequate compliance a wllh County and Mite a*uritipnuIi' quIrirnante mar Date Impactor RETAIN WITH RECEIPT RECORDS A CONSTRUCTION SITE 4tONDIT(ONS: All InallallitIoeImustw�lhall (aqui rimantaalitsColafadDSlataeoardofHeiIIhIndlwtciul1SewapaDlapoiit$yitemaChapter Z6, Articla 10 C.R.S. Rev sed 124. 2. Thio patiaalIavaNd only for oonnecliontoitruchime i1 hew. luny commies with Ootimyzoning anc bullWing inallalraonta. Con, nod Ion toot lr is tail b soy dwil l l ng or Moo t u res riot approved bytes bundle" end Zom I rep oft Ica ala al I automatically bi a %i o lal Ion air a requlratiterlit 01 tha Neurit arid Garai for boll4 IaONt action and revocation of Me parrrsll. 3_ Any pampa whoswooaulala.Mame( Instal rseelIrs 141.10 ilieekripadispoliisyst m Ina ream ner whic h Involver a knowtrio andmatt Hal woriallon born Ata* terms o speclfcatlonra contained In tl'ii applltddion Cd parmM +mom ml Is a Claw 1, Patty 0111n10 Room tine — rnorrthi Ire Jill Or both). MOW - APPLICANT Wise- ©EPAFt ratE 1T tr.IA j 413 7 eavi .I .-