HomeMy WebLinkAbout03662·<::;~--L .. · .. '. ~ 'l(i-37o"r:.· ... •· · ' <' .. udr~ •' ~ . . ' ... 07 ~ .. - . ·)' GARFIELD COUNTY BUILDING AND SANITATION DEPARTMENT 109 8th Street Suite 303 Glenwood Springs, Colorado 81801 Phone (303) 945·8212 Permit N~ 3662 f I A88easor's Parcel No. . ......_ ii .... ,·-t., ....... ~ .. This does not constitute a building or use permit. ., : . IND~VIDUAL SEWAGE DISPOSAL l'ERMIT ! PROPl!RTY : Owner's Name V; bfv3 Q, 0 rclo" . • l System Location k3b6 CR.. Q./o 3'-oW.QiV\ CJtt/e b.rl1.Ale1<w 4 '1 I Present Address_. _____________ Phone '::t VS"-'Zro )..\.~ Carloo.-.J{.t!e G>Ptb~3 r Legal Description of Assessor's Parcel No. ----~·-~L_o_+_. --' -~--3~;{-c__:.A._i_M_l_:e_"@-=.4e=-_sJx(l_:_::_:....__' ---- /CJO ~ . ~ • SYSTEM DESIGN Septic Tank Capacity (gallon) ______ Other <.-l'i-Ot.iif.. J_ M' Percolation Rate (minutes/inch) ?gl~r hJ ~;JP)' 3 f {S . ~ "'f' Required Absorption Area • See Attached ?'73 /JI t-, · -6r.J2.-;:..;(-"".;:?;} t,.,....,,~ \ "/11-~ "'-£<-,,( ::-,;i.I,,, ~ "3' x j) ) &-\. 3-0 ~ ( 2 K'&' IC'oD .;11 Special Setback Requirements: Date _j-·'7-DL I Inspector ,(}taL.//"?l..R==q £ ·'lo~ ·'• FINAL SYSTEM INSPECTION' .. NP APPROVAL (as Installed) q,i./ t:b f<>cr< l " .. ~t-. F•ec<.. 0 I ; • ' l l ( Call for lnspe"Ction (24 hours notlc~)·Belore Covering Installation If\ ffa,Q ltJf"\ ). 5 p' ':> I" {J,~o C&° ('<''-> ":fJI..(,, . + • ' l ' I ! ·; ' ' ' /~ ! • System 1nstaller __________________________ '.3_s_-_..f<'_!. __ 2_x_~"----- Septic Tank Capaclty_/_~~-"-o ________________________________ _ ~~ Septic Tank Manufacturer or Trade Name --"~"""'P"-"="------------------------- I I t I Septic Tank Access within 8" of surface --,~='--------------------------- Absorption Area-",_..."------------------------------------- Absorption Area Type and/or Manufacturer or Trade Nari)~ ad .. 1;.:J~ ,{> / Adequate comi)llance with County and State regulations/requlrements~y.ea-.,.,,.='----------------- Other __ _, _________________ __,,~...,-~~..---------------f. RETAIN WITH RECEIPT RECORDS AT CON •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 perm'it is valid" only for connection to structures which have fully complied with County zoning and building requirements. Con-iii nection to or use with any dwelling or structures not approved by the Building and Zoning office shall automatically be a violation or a 1: 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 m•ttrlal j variation from the terms or specifications contained In the application of permit commits a Class I, Petty Offense ($500.00 fine-6 j·' months In jail or both). • White. APPLICANT Yellow. DEPARTMENT ------------------------------ - - - - - - - .. INDIVIDUAL SEWAGE DISPOSAL SYSTEM APPLICATION OWNER Gordon Viberg ADDRESS c/o 320 Main Street #203, CarbondaffioNE 963-0566 CONTRACTOR DM Neuman Construction Co. ADDRESS PO Box 2317, Glenwood Spgs CO PHONE 945-7502 PERMIT REQUEST FOR (x) NEW INSTALLATION ( ) ALTERATION ( ) REPAIR Attach separate sheets or repo1t 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: COUNTY_G_a_r_f_i_e_l_d ______ _ Near what City or Town Carbondale (Missouri Hts, Areasize of Lot 8. 578 acres Legal Desc1iption or Address Lot 1, West Rimledge Subdivision Cf2-f<SU WAS TES TYPE: ( x) DWELLING ( ) TRANSIENT USE ( ) COMMERCIAL OR INDUSTRIAL ( ) NON-DOMESTIC WASTES ( ) OTHER-DESCRIBE ________________ _ BUILDING OR SERVICE TYPE: Single Family,tResidence Number of Bedrooms. _ _,,_ _______________ Number of Persons._,._4=-6.,__ ___ _ ( x) Garbage Grinder ( x) Automatic Washer (;x: ) Dishwasher SOURCE AND TYPE OF WATER SUPPLY: ( xl WELL ( ) SPRING ( ) STREAM OR CREEK Give depth of all wells within 180 feet of system: ____________________ _ If supplied by Community Water, give name of supplier __________________ _ GROUND CONDITIONS: Depth to bedrock: none encountered Depth to first Ground Water Table __ n~o~t_e~n~c~o~u~n_t_e_r_e_d _________________ _ Percent Ground Slope 8%/building envelope: 4%/building site DISTANCE TO NEAREST COMMUNITY SEWER SYSTEM: _______________ _ Was an effort made to connect to community system? N/A ( ) YES ( ) NO TYPE OF INDIVIDUAL SEWAGE DISPOSAL SYSTEM PROPOSED: (x ) 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: (x ) ABSORPTION TRENCH, BED OR PIT ( ) UNDERGROUND DISPERSAL ( ) ABOVE GROUND DISPERSAL ( ) ( ) ( ) EVAPOTRANSPIRA TION SAND FILTER WASTEWATER POND (. ) OTHER-DESCRIBE. ________________________ _ WILL EFFLUENT BE DISCHARGED DIRECTLY INTO WATERS OF THE STATE?_N_o ____ _ 2 ' PER.COl:A'1'10N TEST RESULTS: (To be completed by Registered Professional Engineer) Minutes _____ per inch in hole No. I Minutes _______ per inch in hole No. 3 Minutes per inch in hole No. 2 Minutes per inch in hole No. __ _ Name, address and telephone ofRPE who made soil absorption tests: ________________ _ Name, address and telephone ofRPE responsible for design of the system: _______________ _ Applicant acknowledges that the completeness of the application is conditional upon such further mandatory and additional tests and repmts as may be required by the local health department to be made and furnished by the applicant or by the local health department for purposes of the evaluation of the application; and the issuance of the pennit is subject to such tenns and conditions as deemed necessary to insure compliance with rules and regulations adopted under Article I 0, Title 25, C.R.S. 1973, as amended. l11e undersigned hereby certifies that all statements made, infonnation and reports submitted herewith and required to be submitted by the applicant are or will be represented to be trne and conect to the best of my knowledge and belief and are designed to be relied on by the local depa11ment of health in evaluating the same for puqioses of issuing the pennit applied for herein. I further understand that any falsification or misrepresentation may result in the denial of the application or revocation of any sed pon said application and in legal action for perjury as provided by law. 3-21-02 Date. _______________ _ PLEASE DRAW AN ACCURATE MAP TO YOUR PROPERTY!! 3 .. ~tech September 9. 1999 Gordon Viberg 2929 Briar Park Drive, Suite 405 Houston, Texas 77042 Hc1>''·orth·P:t\\luk c; ..... 1tL·chnkal. Inc. S0.20 ('ountv ltond IS-I <:lcn\\ood Sprinus. <:olnrndo 81'101 Phone: 970.9-'"~· 7 1)88 Fax: 970-9.4.5·/i-lS-I hpgl:'o (f\l hp~cot~ch.l·un1 Job No. 199 625-1 Subject: Subsoil Study for Foundation Design and Percolation Test, Proposed Residence. Lot I. West Rim!edge Subdivision. West of 100 Road, Garfield County, Colorado Dear Mr. Viberg: As requested. Hepworth-Pawlak Geotechnical, Inc. performed a subsoil study and percolation test for foundation and septic disposal designs at the subject site. The study was conducted in accordance with our agreement for geotechnical engineering services to you dated August 19, 1999. The data obtained and our reconunendations based on the proposed construction and subsurface conditions encountered are presented in this report. Hepworth -Pawlak Geotechnical, Inc., previously observed the geologic conditions for the subdivision and presented our findings in a letter dated September 26, 1997. Job No. 197 587. Proposed Construction: At the time of our study. design plans for the residence had not been developed. We understand that the results of this study will be used in '-'Onsideration of property purchase. We assume the proposed residence will be a two story structure located in the area of Pit l shown on Fig. I. Ground tloors will likely he structural over crawlspace. Cut depths are expected to range between about 4 to 6 feet. Foundation loadings for this type of construction cue assumed to be re!ati'.T!\' !i~ht and typical of the proposed type of construction. The septi'-' disposal system is proposed to he located ahout 60 to 70 feet downhill to the north of the proposed residence. If huilding conditions or foundation loadings are significantly different from those described above. we should be notified to re-evaluate the recommendations presented in this report. Site Conditions: The site was vacant at the time of our field work. The ground surface in the building area is relatively flat area with a strong to moderately steep slope down to the north. The terrain becomes steeper in the southern portion of the lot with a Gordon Viberg September 9, I 999 Page 2 moderately steep to steep slope down to the south at grades of about 30%. There is about 6 to 8 feet of elevation difference in the building area and about JOO feet across the lot. The lot is vegetated with pinon trees, scattered sagebrush, grass and weeds. Basalt cobbles and boulders are exposed on the ground surface. Subsurface Conditions: The subsurface conditions at the site were evaluated by excavating one exploratory pit in the building area and one profile pit in the septic disposal area at the approximate locations shown on Fig. I. The logs of the pits are presented on Fig. 2. The subsoils encountered, below about l 't'.1 feet of topsoil, consist of basalt fragments up to boulder size in a silty sand matrix. Results of a gradation analysis performed on a sample of the gravel (minus 6 inch fraction) obtained from the site are presented on Fig. 3. No free water was observed in the pits at the time of excavation and the soils were slightly moist to moist. Foundation Recommendations: Considering the subsoil conditions encountered in the exploratory pits and the nature of the proposed construction, we recommend spread footings placed on the undisturbed natural soil designed for an allowable soil bearing pressure of 3,000 psf for support of the proposed residence. Footings should be a minimum width of 16 inches for continuous walls and 2 feet for columns. Loose and disturbed soils encountered at the foundation bearing level within the excavation should be removed and the footing bearing level extended down to the undisturbed natural soils. Voids created by the removal of large rock should be backfilled with compacted sand and gravel (such as road base) or concrete. Exterior footings should be provided with adequate cover above their bearing elevations for frost protection. Placement of footings at least 36 inches below the exterior grade is typically used in this area. Continuous foundation walls should be reinforced top and bottom to span local anomalies such as by assuming an unsupported length of at least I 0 feet. Foundation walls acting as retaining structures should be designed to resist a lateral earth pressure based on an equivalent fluid unit weight of at least 45 pcf for the on-site soil, excluding vegetation, topsoil and oversized rock as backfill. Floor Slabs: The natural on-site soils, exclusive of topsoil, are suitable to support lightly loaded slab-on-grade construction. To reduce the effects of some differential movement, floor slabs should be separated from all bearing walls and columns with H-P GEOTECH Gordon Viberg September 9, 1999 Page 3 expansion joints which allow unrestrained vertical movement. Floor slab control joints should be used to reduce damage due to shrinkage cracking. The requirements for joint spacing and slab reinforcement should be established by the designer based on experience and the intended slab use. A minimum 4 inch layer of free-draining gravel should be placed beneath slabs-on-grade to facilitate drainage. This material should consist of minus 2 inch aggregate with less than 50% passing the No. 4 sieve and less than 2 % passing the No. 200 sieve. All fill materials for support of floor slabs sl1ould be compacted to at least 95% of maximum standard Proctor density at a moisture content near optimum. Required fill can consist of the on-site soils devoid of vegetation. topsoil and oversized rock. Underdrain System: Although free water was not encountered during our exploration, it has been our experience in mountainous areas that local perched groundwater can develop during times of heavy precipitation or seasonal runoff. Frozen ground during spring runoff can create a perched condition. We recommend below-grade construction, such as retaining walls. crawlspace and basement areas. be protected from wetting and hydrostatic pressure buildup by an underdrain system. An underdrain should not be needed for a shallow crawlspace provided the exterior backfill is properly compacted and positive surface drainage is maintained around the residence. The drains should consist of drainpipe placed in the bottom of the wall backfill surrounded above the invert level with free-draining granular material. The drain should be placed at each level of excavation and at least I foot below lowest adjacent finish grade and sloped at a minimum l % to a suitable gravity outlet. Free-draining granular material used in the underdrain system should contain less than 2 % passing the No. 200 sieve, less than 50% passing the No. 4 sieve and have a maximum size of 2 inches. The drain gravel backfill should be at least 11 /2 feet deep. Surface Drainage: The following drainage precautions should be observed during construction and maintained at all times after the residence has been completed: H-P GEOTECH Gordon Viberg September 9, 1999 Page 4 1) Inundation of the foundation excavations and underslab areas should be avoided during construction. 2) Exterior backfill should be adjusted to near optimum moisture and compacted to at least 95 % of the maximum standard Proctor density in pavement and slab areas and to at least 90% of the maximum standard Proctor density in landscape areas. Free-draining wall backfill should be capped with about 2 feet of the on-site, finer graded soils to reduce surface water infiltration. 3) The ground surface surrounding the exterior of the building should be sloped to drain away from the foundation in all directions. We recommend a minimum slope of 12 inches in the first 10 feet in unpaved areas and a minimum slope of 3 inches in the first 10 feet in pavement and walkway areas. 4) Roof downspouts and drains should discharge well beyond the limits of all backfill. Percolation Testing: Percolation tests were conducted on August 24. 1999 to evaluate the feasibility of an infiltration septic disposal system at the site. One profile pit and three percolation holes were dug at the locations shown on Fig. 1. The test holes (nominal 12 inch diameter by 12 inch deep) were hand dug at the bottom of shallow backhoe pits and were soaked with water one day prior to testing. The soils exposed in the percolation holes are similar to those exposed in the Profile Pit shown on Fig. 2 and consist of about 1 1/2 feet of topsoil overlying relatively dense basalt fragments up to boulder size in a silty sand matrix. The percolation test results are presented in Table I. The percolation test results indicate an infiltration rate between 30 and 120 inches per inch with an average of 70 minutes per inch. The percolation rates for test holes P-1 and P-2 may have been slower due to large rocks in the bottom of the test holes. Limitations: This study has been conducted in accordance with generally accepted geotechnical engineering principles and practices in this area at this time. We make no warranty either expressed or implied. The conclusions and recommendations submitted in this report are based upon the data obtained from the exploratory pits excavated at the locations indicated on Fig. I, the proposed type of construction and our experience in the area. Our findings include interpolation and extrapolation of the subsurface H·P GEOTECH Gordon Yiberg September 9. 1999 Page 5 conditions identified at the exploratory pits and variations in the subsurface conditions may not become evident until excavation is performed. If conditions encountered during construction appear different from those described in this report, we should be notified at once so re-evaluation of the recommendations may be made. This report has been prepared for the exclusive use by our client for design purposes. We are not responsible for technical interpretations by others of our information. As the project evolves, we should provide continued consultation and field services during construction to review and monitor the implementation of our recommendations, and to verify that the recommendations have been appropriately interpreted. Significant design changes may require additional analysis or modifications to the recommendations presented herein. We recommend on-site observation of excavJtions and foundation bearing strata and testing of structural fill by a representative of the geotechnical engineer. If you have any questions or if we may be of further assistance, please let us know. Sincerely, JZA/ksm attachments cc: Muse Architects -Attn: Dan Muse H-P GEOTECH 199 625-1 6675 I I 1/ I '- (._/' ' ' ' --------. ' ' ' ', ' ' ...... t-' ' -' ' _____ , ' ......,__~ APPROXIMATE SCALE , .. = 150' ' '" ....... ' ' ...... _ PROFILE '-, '-, ---6675 PIT ' r--......... ~ 2 ', ', 6 7 00 ___ --l-_ _! _2 666:, ', ', EASEMENT I -'-' I I P 3 ,-_ .J. _ I I ) I ---I 6700 I Pill I I BUILOING • I I EN~~P~~-------LOT 2 6725 ------l-_l. __ J --...... L___.---'\ 6725 --------------------- LOT 1 --- - - - - --L. - - - - -------------6700 -- -------6675 ----' ....... ,,.,,.,..... 6675 6650 J--...... --..- -----. ~ ...... ---- ------------- - -6650 -------............... ...... ...... --- -6625 ...... 6625------- --- - - - - - - -• I.. .............. 6600 ----- -J-"""-----------.1 6600 HEPWORTH -PAWLAK GEOTECHNICAL, INC. LOCATION OF EXPLORATORY PITS AND PERCOLATION TEST HOLES _..,. 6700 Fig. 1 0 -" " LL 5 .r: -Q. " 0 10 LEGEND: PIT 1 ELEV. = 6 724' I -.. PROFILE PIT ELEV. = 6678' I WC=\2.7 -.. +4-=63 -200=18 TOPSOIL; sandy silly cloy with basalt frogmen ts, organic, iirm, moist, dork brown. BASALT FRAGMENTS (GM); in a silty sand matrix, fragments up to boulder size, dense, slightly moist, brown to light brown, calcareous with depth. Disturbed bulk sample. T Practical digging refusal. NOTES: : . Exploratory pits were excavated on August 23, 1999 with a backhoe. 2. Locations of exploratory pits were measured approximately by peeing from features on the site pion provided. 3. Elevations of the exploratory pits were obtained by interpolation between contours on the site pion provided. Logs ore drown to depth. 4. The exploratory pit locations and elevations should be considered accurate only to the degree implied by the method used. 5. The lines between materials shown on the exploratory pit logs represent the approximate boUndories between material types and transitions may be gradual. 6. No free water was encountered in the pits at the time of excavating. fluctuations in water level may occur with time. 7. Laboratory Testing Results: WC = Water Content ( :r. ) +4 = Percent retained on No. 4 sieve -200 = Percent passing No. 200 sieve 199 625-1 HEPWORTH -PAWLAK GEOTECHNICAL, INC. LOGS OF EXPLORATORY PITS 0 -Q) " .... 5 .r: -Q. " 0 10 Fig. 2 . ' . • I H'l'DROMEll:R ANALYSIS I SIEVE AHAL YStS I I TIME AEAOIHCS I U.S. STAN04RD SERIE.:$ I Ct.EAR SQUARE OP[)ltNCS I 24 HR. 7 HR 45 WIN. 15 MIN. 60 MIN.HI MIN. 4 MIN. 1 MIN. 1200 MO ,.. ,,. '" ,. ,. 3/8·112•3;4• 1 1/2• 100 to .. " '-' z 60 ii\ "' <{ Q_ ,_ so z w u "' w Q_ 40 30 20 " ' .001 .002 .oos .OOll .01'1 .OJ7 .074 .ISO .300 .000 1.1e "" 4.75 Q.512.5 19.0 37.5 DIAMETER OF PARTICLES IN MILLIMETERS 199 625-1 CLAY TO SILT I Mt I GRAVEL 63 % SAND LIQUID LIMIT % SAMPLE OF: Silty Sandy Grovel with HEPWORTH -PAWLAK GEOTECHNICAL, INC. 1f!iJw !Co1.RS£ I fiNE lill~lll:~ COAR# 19 % SILT AND CLAY PLASTICITY INDEX % Cobbles FROM: Profile Pit ot 5.5 GRADATION TEST RESULTS J' 5•5• ,. ' " 20 30 D 40 w z ;;: ,_ w "' 50 ,_ z w u "' w Q_ 00 70 80 IOO 76.2 "' "' m I COBBLLS 18 % thru 6.5 Feet Fig. 3 • <,. • . ' .. HOLE NO. HOLE DEPTH !INCHES! P-1 33 P-2 38 P-3 50 HEPWORTH-PAWLAK GEOTECHNICAL, INC. TABLE I PERCOLATION TEST RESULTS LENGTH OF WATER DEPTH WATER DEPTH INTERVAL AT START OF AT END OF !MINI INTERVAL INTERVAL ONCHESl !INCHES! 15 6 1/4 5 1/2 5 1/2 5 1 /4 5 1/4 5 5 4 3/4 4 314 4 112 4 1/2 4 114 15 7 314 7 114 7 114 7 1/4 7 114 7 7 7 7 6 314 6 314 6 314 15 7 6 6 5 1 /2 5 1/2 5 5 4 1/2 4 1/2 4 4 3 1 /2 JOB NO. 199 625· 1 DROP IN AVERAGE WATER PERCOLATION LEVEL RATE !INCHES! IMIN./INCH) 3/4 1/4 1/4 1/4 1/4 114 60 112 0 114 0 114 0 120 1 112 1/2 1/2 1/2 1/2 30 NOTE: Percolation test holes were hand dug in the bottom of backhoe pits and soaked on August 23. 1999. Percolation test were conducted on August 24, 1999. The average percolation rate was based on the last two readings of each test. There were large rocks in the bottom of P· 1 and P-2. • •• June 4, 2002 Garfield County Building & Planning I 09 Eighth Street, Third Floor Glenwood Springs, CO 81601 -----------------------------~~~- RECEIVED JUN o 5 2002 Re: ISDS for Viberg Residence-Loi I West Rimledge Subdivision, Permit No. 3662 HCE Job No. 2021050.0218 To Whom It May Concern: This letter is regarding the Individual Sewage Disposal System for the proposed Viberg Residence located on Lot I of the West Rimledge Subdivision. It is High Country Engineering, lnc.'s (HCE) understanding that the subdivision covenants require that an engineer verify the septic design. HCE's recommendations are based on percolation testing performed by Garfield County personnel on May 9, 2002. Apparently, only one percolation hole had been dug about 140-feet south of the proposed residence. Also, no soil data was provided on the Individual Sewage Disposal Permit. The percolation result was 12 minutes per inch, which falls within an acceptable range for a typical state approved septic system. We recommend the installation of an absorption bed, or absorption trenches using standard "Infiltrator" units. We understand that this ISDS will serve a single-family residence with three (3) bedrooms and a garbage disposal. Using two (2) people per bedroom as the basis of design, and a rate of75 gallons per day per person, the estimated average wastewater flow would be 450 gallons per day. The design flow, per regulation, is 1.5 times the average, or 675 gallons per day. The use of a garbage disposal requires that the system size be increased by 20% for an adjusted design flow of 810 gallons per day. The required standard absorption area (based on 12 minutes per inch) is 562 square feet. If the "Infiltrator" units were installed in a bed configuration, a 40% reduction would be allowed. If the "Infiltrator" units were installed trench system configuration, a 50% reduction would be allowed. At 15.5 square feet per unit, 22 units would be required in a bed configuration and 19 units would be required in a trench configuration. Based on the adjusted design flow, the minimum size of septic tank is 1250-gallons. Cleanouts should be also installed at all bends leading from the residence into the septic tank. If you wish to use a standard gravel bed system, or if you have any questions or need additional information, please contact us. Sincerely, RDN/djw 1517 Blake Avenue, Suite 101 Glenwood Springs, CO 81601 Telephone (970) 945-8676 -Fax (970) 945-2555 14 Inverness Drive East Suite D-136 Englewood. CO 80112 Telephone (303) 925-0544 -Fax (303) 925-0547