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Home My WebLink AboutApplication- Permit1 4so. coSIIctioC&pjat is ) GARFIELD COUNTY BUILDING AND SANITATION DEPARTMENT 108 Eighth Street, Suite 201 Glenwood Springs, Coloradof 81601 Phone (970) 945-8212 INDIVIDUAL SEWAGE DISPOSAL PERMIT Permit 4094 Assessor's Parcel No. ?3113-3 c(-1-c'o -coy This does not constitute a building or use permit. PROPERTY / Owner's Name' `"`_F Felt % •' C�r Present Address Oa_6(0� (��o� Lo -�� P`hone ` � 3730 7 System Location (31-5(i) Uafl / A • C td ale COOi�(oQA Legal Description of Assessor's Parcel No 69393-254- oO - 0 �U SYSTEM DESIGN Septic Tank Capacity (gallon) Other Percolation Rate (minutes/inch) Number of Bedrooms (or other) Required Absorption Area - See Attached Special Setback Requirements: Date Inspector FINAL SYSTEM INSPECTION AND APPROVAL (as installed) Call for Inspection (24 hours notice) Before Covering Installation siqz tbEitt-cLQ System Installer Septic Tank Capacity Septic Tank Manufacturer or Trade Name Septic Tank Access within 8" of surface Absorption Area Absorption Area Type and/or Manufacturer or Trade Name Adequate compliance with County and State regulations/requirements ::r 2 n ?/;2/L/ Inspect'1 f07-04-?L— e P` • RETAIN WITH RECEIPT RECORDS AT CONSTRUCTION SITE •CONDITIONS: 1. All installation must comply with all requirements of the Colorado State Board of Health Individual Sewage Disposal Systems Chapter 25, Article 10 C.R.S. 1973, Revised 1984. 2. This permit is valid only for connection to structures which have fully complied with County zoning and building requirements. Con- nection to or use with any dwelling or structures not approved by the Building and Zoning off ice shall automatically be a violation or a requirement of the permit and cause for both legal action and revocation of the permit. 3. Any person who constructs, alters, or installs an individual sewage disposal system in a manner which involves a knowing and material variation from the terms or specifications contained in the application of permit commits a Class I, Petty Offense ($500.00 fine -6 months in jail or both). White - APPLICANT Yellow - DEPARTMENT INDIVIDUAL SEWAGE DISPOSAL SYSTEM APPLICATION OWNER j 2-fo rJV e I 1 ADDRESS -256 Cl j i i ( 01")V pLice Lt.( PHONE 963303f CONTRACT-O�RSig.1 }(a 0k_ ADDRESS TL'—t -c -ct PHONE t F PJ5 PERMIT REQUEST FOR (‘A.. NEW INSTALLATION ( ) ALTERATION ( ) REPAIR Attach separate sheets or report showing entire area with respect to surrounding areas, topography of area, habitable building, location of potable water wells, soil percolation test holes, soil profiles in test holes (See page 4). LOCATION OF PROPOSED�^FACILITY: Near what City of Town l et L - e; (^ C i C Oc (e (C" Size ofLot....5 { Ac t -F Legal Description or Address Cl. -3 t b L�l 1 too De Lip (c /,` , (G WASTES TYPE: ki DWELLING ( ) TRANSIENT USE ( ) COMMERCIAL OR INDUSTRIAL ( ) NON-DOMESTIC WASTES ( ) OTHER -DESCRIBE BUILDING OR SERVICE TYPE: KCS Number of Bedrooms 3 6utgiat,t28 ciAn Number of Persons 2 ( ) Garbage Grinder 0 Automatic Washer (A Dishwasher IN .t114 -J O& SOURCE AND TYPE OF WATER SUPPLY: (X WELL ( ) SPRING ( ) STREAM OR CREEK If supplied by Community Water, give name of supplier: DISTANCE TO NEAREST COMMUNITY SEWER SYSTEM: Sec /f-rc- Was an effort made to connect to the Community System? A site plan is required to be submitted that indicates the following MINIMUM distances: Leach Field to Well: 100 feet Septic Tank to Well: 50 feet Leach Field to Irrigation Ditches, Stream or Water Course: 50 feet Septic System (septic tank & disposal field) to Property Lines: 10 feet YOUR INDIVIDUAL SEWAGE DISPOSAL SYSTEM PERMIT WILL NOT BE ISSUED WITHOUT A SITE PLAN. GROUND CONDITIONS: Depth to first Ground Water Table Percent Ground Slope 2 • TYPE OF INDIVIDUAL SEWAGE DISPOSAL SYSTEM PROPOSED: (CA 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: ABSORPTION TRENCH, BED OR PIT ( ) EVAPOTRANSPIRATION UNDERGROUND DISPERSAL ( ) SAND FILTER ABOVE GROUND DISPERSAL ( ) WASTEWATER POND OTHER -DESCRIBE WILL EFFLUENT BE DISCHARGED DIRECTLY INTO WATERS OF THE STATE? PERCOLATION TEST RESULTS: (To be completed by Registered Professional Engineer, if the Engineer does the Percolation Test) Minutes per inch in hole No. 1 Minutes per inch in hole No. 3 Minutes per inch in hole No. 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 as may be required by the local health department to be made and furnished by the applicant or by the local health department for purposed of the evaluation of the application; and the issuance of the permit is subject to such terms and conditions as deemed necessary 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. I further understand that any falsification 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. Si � (�j�& DateA - 7 ? Of PLEASE DRAW AN ACC TE MAP TO YOUR PROPERTY!! 3 CR NK CONSTRUCTION • INCORPORATED 1129 -24- Road Grand Junction, CO 81505 970-245-0577, 970-257-7453 (fax) September 23, 2005 i RECEI`` SE? 2 : 05 R BU1LDiNG �NOG ti) CERTIFICATE OF INSPECTION AND ACCEPTANCE Individual Sewage Disposal System Kappeli Residence 0256 Willow Lane Carbondale, CO 81623 The individual sewage disposal system of reference was inspected on September 23, 2005. The system was found to conform with the plans and specifications set forth in the engineered sewage disposal system design for the aforementioned property prepared on February 16, 2005. Copies of the engineered plan are on file at the Garfield County Building Department or may be obtained from the undersigned design engineer. Thomas A. Cronk, P.E. 1129 -24- Road Grand Junction, CO 81505 970-245-0577 t Y J 0 a w u Y s c 0 -, eY Wu o o °: W W � Q w WW iQU w N ? o Wn wow N Cr J W11 F al v 3 s w ww 0 u,dc D d � CO 6 CN VI WU Y o Q N N 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 CRONK CONSTRUCTION INCORPORATED 1129.24• Road • Grand Junction, CO 81505 970.2454577, 970-257-7453 (fax) INDIVIDUAL SEWAGE DISPOSAL SYSTEM DESIGN Date: February 16, 2005 Prepared by: Thomas A. Cronk, P.E. Cronk Construction Inc. 1129 -24- Road Grand Junction, CO 81505 245-0577 Type of Design: Residential Owner: Victor Kappeli 0256 Willow Lane Carbondale, CO 81623 970-963-3037 Property address: 0256 Willow Lane, Carbondale, CO 81623 Tax schedule No.: Page 1 of 8 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1.0 Site History The site consists of approximately 5.5 acres of cultivated native soil. Drainage is approximately 1.0% to the north. A percolation test/soils evaluation was conducted on the property of reference on 02/04/05 by Tom A. Cronk, registered professional engineer (R.P.E.). The pert excavation trench was located approximately 150' south of the north property line and approximately 40' east of the partially constructed residence on the property. The perc test was intended to provide subsurface design parameters for design of an individual sewage disposal system (ISDS) for the property. As based on results from this subsurface investigation, the .following ISDS design has been prepared. Results from the 02/04/05 perc test/soils evaluation are attached for reference as Appendix A. 2.0 Development of Desist Parameters A perc excavation trench was extended to a depth of 96" below ground surface (BGS). The existing water table was observed in the open excavation at a depth of 90" BGS. The high seasonal water table was estimated at a depth of 84" BGS. The soils evaluation indicates two distinct soil horizons underlie the site. A lithological description follows: depth (in.) description 0" - 12" clayey sand with gravel, brown 12" - 96" pitrun (25mm-300mm) in coarse brown sand matrix; sufficient fines for filtration Pit run soils below a depth of 12" exhibit a perc rate faster than 5 min/in. None -the -less, the pit run soils have a sufficient "fines" content to serve as suitable and effective filtration soil. As based on the perc test results (Appendix A) and to allow for the formation of a biomat, a design perc rate of 25 min/in. is chosen for overall system sizing for subsurface discharge below a depth of 24". Page 2 of 8 3.0 Svstem Design A INFILTRATOR absorption trench is proposed for discharge of septic effluent at the site. Construction of the system will consist of excavating level trenches in the area comprising the absorption field. The initial excavation shall be continued to a minimum depth of 36" (see absorption field cross-section). Following completion of the initial push -out, INFILTRATORS will be used to construct a septic effluent distribution system in the open excavations. The INFILTRATOR effluent distribution system will be installed in accordance with the "Infiltrator Technical Manual", available from Infiltrator Systems Inc., 123 Elm Street, Suite 12, Old Saybrook, Connecticut 06475. Adjacent INFILTRATORS shall be fastened with a minimum of four (4) 3/4" x #8 self -tapping sheet metal or bright brass deck screws to prevent movement and separation during backfilling. As shown in the Construction Detail, the bottom of the INFILTRATOR seepage trenches will be located a minimum of 36" below ground level. After the INFILTRATORS are installed, the absorption field will be covered with a soil cap. The soil cap will consist of approximately 24" (10" minimum required) of native soil mounded 5% to promote surface run off away from the absorption field. The installer should confirm the feasibility of gravity discharge of sewage effluent from the structure to the absorption field by field verification of assumed design parameters. Assumed design parameters with respect to gravity discharge include: • distance from exit of sewage pipe at foundation line to absorption field - 60' or Tess, • elevation of ground surface at entry to absorption field must be no more than 14" above the invert elevation of sewage pipe at exit from foundation line. If field measurements do not confirm these design assumptions, gravity discharge of septic effluent from the proposed structure can not be assured and a lift station may be required. Please contact the design engineer to address any design modifications necessary if these design assumptions are not upheld. The installer must also confirm the setbacks from property lines, building envelopes, and existing easements shown in the attached graphics are maintained. Additionally, any unknown utility lines, easements, or other adverse conditions disclosed during construction must maintain the required setbacks listed on page 5 of this document. A 1000 gallon septic tank will be installed to provide a minimum of 30 hours retention time for sewage effluent from the proposed three bedroom residence. A non -corrodible Orenco filter (model # FTW0444-36A) shall be installed at the final outlet Tee of the septic tank or in the effluent line between the septic tank and the absorption field to limit the size of solids and sludge passing into the absorption fields. The filter must be accessible for cleaning and replacement from the ground surface. A distribution box is required to provide equal distribution of septic effluent from the septic tank to the absorption field. The distribution box must be placed on stable native soil or compacted structural fill to prevent settling and assure equal distribution of septic effluent. As discussed above, INFILTRATOR absorption trenches are proposed to discharge septic effluent to the underlying sub -soils. As shown in the attached graphics, the absorption trenches will consist of three (3) Page 3 of 8 trenches 3' wide x 3' min. deep x 75' long with twelve (12) standard INFILTRATOR units each for a total of thirty six (36) INFILTRATORS. The absorption field will encompass a gross area of 675 square feet with an effective area (31 sq. ft. allowed area/INFILTRATOR) of 1,116 sq. ft. Calculations and design parameters used to size the absorption field follow. DESIGN CALCULATIONS AVERAGE FLOW FOR 3 BEDROOM HOME ® 150 GALJBEDROOM-DAY 3 X 150 = 450 GALWAY PEAK FLOW = 150% OF AVERAGE = 675 GAL.IDAY DESIGN PERCOLATION RATE = 25.0 MINJINCH A = Qt(, WHERE, A = ABSORPTION FIELD AREA Q = PEAK FLOW t = PERC TIME/INCH A = 655 25.0 = 675 SQUARE FEET INCREASE ABSORPTION AREA BY 40% FOR CLOTHES WASHER INCREASE ABSORPTION AREA BY 20% FOR GARBAGE GRINDER DESIGN AREA = 675x1.6 = 1080 SQUARE FEET SIZE ADJUSTMENT FACTOR OF 0.5 FOR INFILTRATOR TRENCH SYSTEM ADJUSTED AREA = 1080 X 0.5 = 540 SQUARE FEET USE 36 STANDARD (H-10) INFILTRATORS ® 15.50 SQ. FT. EACH FOR TOTAL ABSORPTIVE AREA OF 36 X 15.50 = 558 SQ. FT. ABSORPTION FIELD SIZED AT THREE (3) TRENCHES 3 FT. x 75 FT. = 675 SQ. FT. Page 4 of 8 4.0 Site Specific Installation/Operation Requirements The owner and system contractor shall be aware and comply with the following installation and system operation requirements. 4.1 Installation - Setbacks. Notifications. and Inspections • All installation activities shall be conducted in accordance with current Colorado Department of Health ISDS Regulations as well as anv relevant Garfield County regulations and requirements. If at any time during construction. subsurface site conditions are encountered which differ from the design parameters developed in Section 2.0. construction activities will stop and the design engineer will be contacted to address any necessary design modifications, • Installation procedures including grade, location, setbacks, septic tank size, and absorption field size shall conform with the attached graphic details. Construction activities and system components will not encroach upon existing easements or utility corridors. A minimum of 6 ft of undisturbed soil shall be maintained between individual absorption elements and the septic tank and/or adjacent absorption elements. Minimum site specific setbacks for system components are: Source Septic Tank Absorption Fie14 Building Sewer water line 10' 25' 10' domestic well 50' 100' 50' occupied bldng 5' 20' property lines 10' 10' pond/lake 50' 50' irrigation ditch open 50' 50' lined/gated 10' 25' solid pipe 10' 10' • To avoid surface flow infiltration and saturation of the new absorption system, abandonment of irrigation in the vicinity of the disposal system is required. Diversion ditches necessary to divert surface flows around the new absorption bed must maintain the minimum setbacks listed above. • All sewer lines and effluent distribution piping shall be 4 inches in diameter and have glued joints. INFILTRATORS shall be placed level in the absorption field. All lines discharging sewage from the residence to the septic tank shall maintain fall of between 1/8 in. and 1/4 in. per foot and shall employ sweep 90's or 2-45's at all tums. Sewer lines from the dwelling to the septic tank and at least 6 ft from the septic tank outlet must meet minimum standard ASTM -3034. Sewer lines under driveways shall always meet minimum Schedule 40 PVC standards and shall be encased with corrugated metal pipe when covered with less than 24" of soil. Page 5 of 8 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 • The installer shall not place fill in the open excavation until inspected and approved by the design engineer. Additionally, the final cover shall not be placed on sewer lines, septic tank, or the absorption area until the system has been inspected and approved by the design engineer. Provide 48 hour notice for all required inspections. • Four inch clean outs shall be provided at maximum 100' intervals in all effluent lines exceeding 100' in length. • A non -corrodible Orenco filter (model # FTW0444-36A) shall be installed at the final outlet Tee of the septic tank or in the effluent line between the septic tank and the absorption field to limit the size of solids and sludge passing into the absorption field. The filter must be accessible for cleaning and replacement from the ground surface. • The distribution box shall be set level on undisturbed native soil or a structural pad (e.g., compacted fill or concrete) to prevent settling and promote uniform distribution of flow to the absorption field. A 45 degree bend shall be turned down on the septic influent line to damp surge flows from the septic tank and promote equal distribution. • The effluent distribution system shall be constructed in accordance with the "Infiltrator Technical Manual" available from Infiltrator Systems Inc., 123 Elm Street, Suite 12, Old Saybrook, Connecticut 06475. • The surface cap shall consist of native soil mounded 5% over the absorption field to promote surface runoff. • The system contractor shall be aware of the potential for construction activities to reduce soil permeabilities at the site through compaction, smearing, and shearing. The following precautions and construction procedures should be employed during installation to minimize disturbance to native soils: i. Excavation should proceed only when the moisture content of the soil is below the plastic limit. If a sample of soil forms a rope instead of crumbling when rolled between the hands it is too wet and should be allowed to dry before excavation continues. ii. Excavation and backfill equipment should work from the surface where at all practical to avoid compaction of the soils at depth. iii. The bottom and sidewalls of the excavation should be left with a rough, open surface. The appearance should be that of broken or ripped soil as opposed to a sheared, smeared, or troweled surface. Any smoothed or smeared surfaces should be removed with a toothed rake or shallow ripper taking care to remove loose residues from the bottom of the trench by hand if necessary. iv. Care should be taken in placing fill materials in the excavation to avoid damaging the exposed soil surfaces. Page 6 of 8 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 4.2 Operation - Maintenance and Inspections • The owner shall install a structural barrier if necessary and take precautions to prevent vehicular traffic, excessive surface watering, accidental flooding, or other activities in the vicinity of the absorption field which may compact, saturate, or otherwise alter the subsurface soil parameters used in designing the septic system. • The owner will plant and maintain grass or other shallow rooted cover crop to prevent erosion and promote evapotranspiration over the absorption field. • The owner will inspect and maintain the required mounding and drainage away from the absorption field to prevent saturation from precipitation and surface flows. • To mitigate the generation of preferential flow channels which may compromise the operation of the system, the owner will inspect and prevent intrusion of burrowing animals and deep rooted plants into the absorption field. • The septic effluent filter shall be inspected and cleaned as necessary every six (6) months. • The owner will conduct periodic maintenance of the septic system by removing accumulated sludge from the septic tank every 3-4 years to prevent clogging of the absorption field. Page 7 of 8 5.0 Limitations This report is a site specific design for installation of an individual sewage disposal system and is applicable only for the client for whom our work was performed. Use of this report under other circumstances is not an appropriate application of this document. This report is a product of Cronk Construction Incorporated and is to be taken in its entirety. Excerpts from this report may be taken out of context and may not convey the true intent of the report. It is the owner's and owner's agents responsibility to read this report and become familiar with the recommendations and design guidelines contained herein. . The recommendations and design guidelines outlined in this report are based on: 1) the proposed site development and plot plan as furnished to Cronk Construction Incorporated by the client, and 2) the site conditions disclosed at the specific time of the site investigation of reference. Cronk Construction Incorporated assumes no liability for the accuracy or completeness of information furnished by the client. Site conditions are subject to external environmental effects and may change over time. Use of this plan under different site conditions is inappropriate. If it becomes apparent that current site conditions vary from those anticipated, the design engineer should be contacted to develop any required design modifications. Cronk Construction Incorporated is not responsible and accepts no liability for any variation in assumed design parameters. Cronk Construction Incorporated represents this report has been prepared within the limits prescribed by the owner and in accordance with the current accepted practice of the civil engineering profession in the area. No warranty or representation either expressed or implied is included or intended in this report or in any of our contracts. Thomas A. Cronk, P.E. Date 16) )(DS— NOTE: (Ds1 NOTE: This individual sewage disposal plan is meant to include the following four pages of graphics Including: 1) plot plan, 2) septic layout plan, 3) absorption field plan view, and 4) absorption field cross section. The plan is not to be implemented in the absence of these related graphics. In addition, results from the percolation test and soils evaluation are included for reference as Appendix A. Page 8 of 8 1 // / \\%off N. / / \ C \ \P \\ / V / a 0 0 N ��55'00•E 529.66 resl*ncr Deo rell I cl 't 1 perc test excavation .1:u 1P P 1 ivN € _n o IP existing mobile _ hone to be 5.07 acres vacated S89'56'30'V 572.66' KAPPELI RESIDENCE 0256 VILLOW LANE, CARBONDALE PLOT PLAN FEBRUARY 15, 2005 SCALE' 1'=100' NORTH 1 1 1 1 1 1 1 1 1 1 1 1 1 H 0 LI L2 Li 11 ikJ� ZZ 6 it I1��{IE W L21a y/ ti -ii- W� q 8g .8 O 6 J NNWZ .dam Zgr:CQLJZ Swi- a0CH Zd.aa1 IW- VNO a5OJ WPIrNq g �6pp�� yQzb oax0 OWNTN O.T.W� 0I -w00 Z 11 CC TZ. 1qJ OF IF�.W I.O�q alpaW >J0 -LI Wy. .W.. JI-ZJX C 4 O a y J W J W W Q II W W O W M m a W • Z C PA WF CO 44 L� OCC• p O (1 Z r Z 6 N y W Wtn a Z0J ,ZO., 005 _JcZ et N WYa0 W0 • >JCC 14 S�NN I6 0 urc" J J •LL • ZW J S a •a W a NI- CLI L., in r -O W LLZL H Q la 0 Z 0 r N 32 ce T Z4 r qaW 9 86E ZV • Q H c) W J a O 0 q ce0 1 4-1 1 e Cr 413 ii, 96 124' 132 9 �o YM VC VO lU 6N .80'9(Y 3.0E.0[.SON O 6 distribution bo septic nfluent //////� 36 standard Infiltrator units IH -I0) //'/A9(— / // configured as 3 rows of 12 units n each row 75'.typ 011 -_=_"--_aa 75'.typ. L~J o■MMWAMI=MIII MIME Mae 6' nirt a el provide inspection/venting ports at each end of Infiltrator trenches as shown ABSORPTION FIELD - PLAN VIEW SCALE' 1'=20' KAPPELI RESIDENCE 0256 WILLOV LANE. CARBONDALE ABSORPTION FIELD - PLAN VIEW FEBRUARY 15. 2005 SCALD l'=20' PROVIDE VENTING/INSPECTION PORTS AS REQUIRED BY INFILTRATOR INSTALLATION GUIDELINES, TYP. EACH ROW (ONE OF THREE) SOIL CAP (MOUND 57.) 3/1 MAXIMUM SLOPE, TYP. EXISTING GROUND SURFACE 24' APPROX. (1D'MIN.) DISK OR SCARIFY UNDER INFILTRATOR, TYP. INFILTRATOR, INSTALL IN ACCORDANCE WITH 'INFILTRATOR TECHNICAL MANUAL, INFILTRATOR SYSTEMS INC., 123 ELM STREET, SUITE 12, OLD SAYBROOK, CONNECTICUT 06475 OUTLETS AS REQUIRED 4' 45 -BEND SURGE FLOW iUPPRESSOR, ]I/TSO b INLET -4 • i-u-n-n-u-n-u-u-n--u-u-u-a-u-u-. llII-II-II-II-11-11-II-II-II-II-II-II-II-II II� COMPACTE NATIVE SOIL OR STRUCTURAL FILL TO PREVENT SETTLING ;=-I== == =1 =11=11=11-11=11-11-11 H ;11= 111=11� H=0 m fir DISTRIBUTION BOX DETAIL SCALE' 1'•I' ►-- 72' MIN.,TYP. ABSORPTION FIELD - CROSS SECTION SCALE1 1'=5' -12' -96' SOILS LOG (SEE NOTES) SOILS LOG NOTES 01 - CLAYEY SAND V/GRAVEL, BROWN 12 - PITRUN (25ru+-300nn) IN COARSE BROWN SAND MATRIX GROUND VATER AT 90' BGSJ HIGH SEASONAL VATER TABLE ESTIMATED AT 84' BGS KAPPELI RESIDENCE 0256 WILLOW LANE, CARBDNDALE ABSORPTION FIELD - CROSS SECTION FEBRUARY 15, 2005 SCALES AS SIIDVN APPENDIX A SOILS AND PERCOLATION REPORT CRONK CONSTRUCTION INCORPORATED CRONK CONSTRUCTION INCORPORATED 1129.24- Road • Grand Junction, CO 81505 970.245-0577, 970.257.7453 (fax) SOILS AND PERCOLATION REPORT Date: February 4, 2005 Prepared by: Client: Thomas A. Cronk, P.E. 1129 -24- Road Grand Junction, CO 81505 245-0577 Victor Kappeli 0256 Willow Lane Carbondale, CO 81623 (970) 963-3037 Property address: 0256 Willow Lane, Carbondale, CO 81623 Tax schedule No.: Legal Descript.: 1.0 Soils Evaluation The site consists of approximately 5.5 acres of cultivated native soil. Drainage is approximately 1.0% to the north. A percolation test/soils evaluation was conducted on the property of reference on 02/04/05 by Tom A. Cronk, registered professional engineer (R.P.E.). The perc excavation trench was located approximately 150' south of the north property line and approximately 40' east of the partially constructed residence on the property. A perc excavation trench was extended to a depth of 96" below ground surface (BGS). The existing water table was observed in the open excavation at a depth of 90" BGS. The high seasonal water table was estimated at a depth of 84" BGS. The soils evaluation indicates two distinct soil horizons underlie the site. A lithological description follows: depth (in,) description 0" - 12" clayey sand with gravel, brown 12" - 96" pittun (25mm-300mm) in coarse brown sand matrix; sufficient fines for filtration Perc holes were constructed at the surface and at depths of approximately 42 in. and 74 in. The holes appeared to be well saturated at the time of the test. Results of the percolation test are shown in Table 1. Page A-1 of A-3 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 TABLE 1 Percolation Test Results 0256 Willow Lane, Carbondale Depth Time on 02/04/05 Time Perc Rate min/in 13:20 14:00 14:20 Drop 0" - 14" 4.5 5.25 5.625 60/1.125 53 42"-52" 3"/min. 1/3.0 0.33 74" - 84" 3"/min. 1/3.0 0.33 2.0 Conclusions and Recommendations Soils at the site appear acceptable for implementation of an individual sewage disposal system (ISDS). The following site-specific considerations should be observed during implementation of the ISDS: • The bottom of the ISDS absorption field should be located no deeper than 36" BGS to maintain 4' of usable infiltration soil above the HSWT located at 84" BGS. • Pit run soils below a depth of 12" exhibit a perc rate faster than 5 min/in. None -the -less, the pit run soils have a sufficient "fines" content to serve as suitable and effective filtration soil. A design perc rate of 25 min/in. is recommended for overall system sizing. • Care should be taken during construction to avoid compaction and smearing of the exposed infiltrative surfaces and preserve the natural permeability of the native soils. Page A-2 of A-3 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 .0 Limitations This report provides a professional assessment of the feasibility of implementing an individual sewage disposal system on the property of reference. The design parameters developed in this document are representative of the site conditions disclosed at the specific time of the site investigation. Site conditions are subject to change from external events both manmade (irrigation or pond construction) and naturally occurring (flooding or excessive precipitation). Cronk Construction Incorporated is not responsible and accepts no liability for any variation in assumed design parameters caused by external events. Cronk Construction Incorporated represents this report has been prepared within the limits prescribed by the owner and in accordance with the current accepted practice of the civil engineering profession in the area. No warranty or representation either expressed or implied is included or intended in this report or in any of our contracts. SEAL Thomas A. Cronk, P. Page A-3 of A-3 Dat— � ev—) 6) r