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HomeMy WebLinkAboutApplication- PermitGARFIELD COUNTY BUILDING AND SANITATION DEPARTMENT Q , 108 Eighth Street, Suite 401 "` 7 ''�� Glenwood Springs, Colorado 81601 Permit 1 .2 1(6.1) Cite inn t1 K101 INDIVIDUAL SEWAGE DISPOSAL PERMIT Phone (970) 945-8212 Assessor's Parcel No. 3R 1-- Oct a-oo This does not constitute a building or use permit. PROPERTY Owner's Namei; A)0,0 T [- t rC , ? , Present Address 1-1- I;CPhone q (J ai System Location C \ 5 �' L Legal Description of Assessor's Parcel No. pti $ �_-1,t-i)),-- c SYSTEM DESIGN fiitliteAr 04 -5F -74o -P15 - Septic Tank Capacity (gallon) Percolation Rate (minutes/inch) Required Absorption Area - See Attached Special Setback Requirements: Date 4, C2 Other Number of Bedrooms (or other) / 94 x.7' 4/, Fr' �p/1:7° Z,l 00 .w34�d rz-A/Y /l�+N��i}I'p-s az Inspector^— i FINAL SYSTEM INSPECTION AND APPROVAL (as installed) Call for Inspection (24 hours notice) Before Covering Installation System' Installer Septic Tank Capacity r( Septic Tank Manufacturer or Trade Name Septic Tank Access within 8" of surface K St bid ../1Q(-6- L irc,(-={it ' r� Absorption Area �+ - f 4 r'; ,A r7 33 iII - c2 Absorption Area Type and/or Manufacturer or Trade Name {L) Adequate compliance with County and State regulations/requirements Other 1.)O > ? )trityt Date L 1% - Inspector Ar: i Y%_,>`> RETAIN WITH RECEIPT RECORDS AT CONSTRUCTION SITE 1 ' �ltr 4���lle ,<:f,C 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. Connection to or use with any dwelling or structures not approved by the Building and Zoning office 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 1, Petty Offense ($500.00 fine - 6 months in jail or both). White -APPLICANT Yellow - DEPARTMENT GARFIELD COUNTY SEPTIC PERMIT APPLICATION 108 gib Street, Suite 401, Glenwood Springs, Co 81601 Phone: 970-945-8212 / Fax: 970-384-3470 / Inspection Line: 970-384-5003 www Barfield -coon com STAFF USE ONLY Permit Fee: v IT q3It) Perk Fee: ple itCel1 Parcel No: (this information is available at t e assessors office 97494 9134)m„ i' a; r' d o - 2 Septic Permit #: if., p Job Address: (if an address has not n assig ed, please provide Cr, Nwy or Street Name & City) or and legal description 1/2 /y oA/.�,JJ,4 Coo ' V‘2_3 3 //// ��� Lot No: Sizepq�-��yp' Block No: Subd/ Exemption: / V'T �T� Ef✓ 4 Owner: (property owner) 61u4r/ar Cale 8 Mailing Address 774/7 4.PI06 CA/got J/9& Ph: IG3 /Ij63 Alt Ph: ''- 5 C tractor: ii X rol 144 40 Mailinn.Address ca r ce 2/1 kik Ph: 25 16 Alt Ph: 6 Engineer. Mailing Address Ph: Alt Ph: 7 PERMIT REQUEST FOR: cc) New Installation ( ) Alteration ( ) Repair 8 WASTE TYPE: MDwelling ( )Transient Use ( )Commercial or industrial )Non- Domestic wastes ( )Other — Describe 9 BUILDING OR SERVICE TYPE: FiOne Number of bedrooms 1 Garbage Grinder ( )Yes frxINo 10 SOURCE & TYPE OF WATER SUPPLY: If supplied by COMMUNITY WATER, give name ()WELL ( )SPRING ( )STREAM OR CREEK ( )CISTERN of supplier. 11 DISTANCE TO NEAREST COMMUNITY SEWER Was an effort made to connect to the Community System? SYSTEM: =-�'� o YOUR INDIVIDUAL SEWAGE DISPOSAL SYSTEM PERMIT WILL NOT BE ISSUED WITH OUT A SITE PLAN 12 GROUND CONDITIONS: Depth to 15t Ground Water Table Percent Ground Slope 13 TYPE OF INDIVIDUAL SEWAGE DISPOSAL SYSTEM (ISM) PROPOSED: (x)Septic Tank ( )Aeration Plant ( )Vault ( )Vault Privy ( )Composting Toilet ( )Recycling, Potable Use ( )Recycling, other use ( )Pit Privy ( )Incineration Toilet ( )Chemical Toilet ( )Other- Describe 14 FINAL DISPOSAL BY: ( )Absorption trench, Bed or Pit )Underground ( )Wastewater pond )Other- Dispersal ( )Above Ground Dispersal ( )Evapotranspiration ( )Sand filter Describe 15 Will effluent be discharged directly into waters of the state? ( )YES NNO 16 PERCOLATION TEST RESULT: (to be completed by Registered Professional Engineer, if the Engineer does the Percolation Test) L. 9.e ' Minutes per inch in hole No.1 Minutes per inch in hole No.3 No._ M.r'/. 7 oC. ,� KtoPor Minutes per inch in hole No.2 Minutes per inch in hole Name, address & telephone of RPE who made Name, address & telephone of RPE responsible soil absorption test: 4 P Geo -ht < t,, for design of the system: 17 Applicant acknowledges that the completeness of the application is conditional upon such further mandatory and additional test 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 des0 red 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 unders 441, any falsification or misrepresentation may result in the denial of the application or revocation of any ermit gr nted based upon said application and leg - on forrjury gS,prQvided Try law.` 3 li IN Na -AA -4t6 q OWNERS SIGNATURE 9 DATE STAFF USE ONLY Permit Fee: v IT q3It) Perk Fee: ple Total fees: 73r6b Building Permit #: (fan° Septic Permit #: if., p Issue Date: LI( Ga(et/ Bu'1 ng &cPlanninP D�Ph a1/2 4k/0i 1 APPROVAL DATE yrk 117'.6° Ciji 7U cc 4 t A(01° 103' 2'+"E 0 EU A0 040 S fri v ro 0-4 a z A D t Ho p K. � n0 D - 0 rn Lit It- V) m ou 70 _ e O N r 0 0 W -o S N I-IEPWORTH-PAWLAK GEOTECHNICAL November 18, 2008 Ted and Justina Potter P.O. Box 1505 Carbondale, Colorado 81623 t-iepwcn:b-Pawlak Geocechuical, Inc. 502.0 County Road 154 Glenwood Springs, Colorado 81601 Phone: 970-945-7988 Fax: 970-945-8454 email hpgeo@hpgeotech.com Job No.108 616A Subject: Subsoil Study for Foundation Design and Percolation Testing, Proposed Residence, Southeast of County Road 113, Shippees Draw, Garfield County, Colorado. Dear Mr. and Mrs. Potter: As requested, Hepworth-Pawlak Geotechnical, Inc. performed a subsoil study and percolation testing 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 November 3, 2008. The data obtained and our recommendations based on the proposed construction and subsurface conditions encountered are presented in this report. Proposed Construction: The proposed residence will be a single story manufactured structure over a walkout basement located approximately on the site as shown on Figure 1. The basement floor will be slab -on -grade. Cut depths are expected to range between about 3 to 8 feet. Foundation loadings for this type of construction are assumed to be relatively light and typical of the proposed type of construction. The septic disposal system is proposed to be located downhill to the south of the proposed residence. If building 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 and covered with about 3 inches of snow at the time of our field exploration. The building site is located at the toe of a southwest facing Parker 303-841.7119 e Colorado Springs 719.633-5562 e Silverthorne 970-468-1989 -2 - hillside with about 2 to 4 feet of elevation difference across the building footprint. There is a very steep ridge to the east of the building area. Vegetation consists of scruboak, brush, grass and weeds. There is a mixture of brush on the hillside to the east. Subsurface Conditions: The subsurface conditions at the site were evaluated by excavating two exploratory pits in the building area and one profile pit in the septic disposal area at the approximate locations shown on Figure 1. The logs of the pits are presented on Figure 2. The subsoils encountered, below about'/ foot of topsoil, consist of medium stiff to stiff, sandy silty clay with scattered gravel and cobbles. Results of swell -consolidation testing performed on a relatively undisturbed sample ofthe clay soils, presented on Figure 3, indicate low compressibility under existing moisture conditions and light loading and high compressibility upon increased loading after wetting. Results of gradation analyses performed on samples of the gravel soils (minus 3 and 5 inch fractions) obtained from the site are presented on Figures 4 and 5. The laboratory test results are summarized in Table 1. 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 1,200 psf for support of the proposed residence. The soils tend to compress after wetting and there could be some post -construction foundation settlement. The amount of settlement would depend on the loading conditions and the depth and extent of wetting. The settlement would be differential between footings bearing on the clay soils and footings bearing on the gravels. Footings should be a minimum width of 20 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. 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 Job No.108 616A GE(Ptech -3 - anomalies such as by assuming an unsupported length of at least 12 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 50 pcf for the on-site soil, excluding vegetation, topsoil or rock larger than about 6 inches, as backfill. Floor Slabs: The natural on-site soils, exclusive of topsoil, are suitable to support lightly loaded slab -on -grade construction. The clay soils are compressible when loaded after wetting and there could be some slab settlement and distress. To reduce the effects of some differential movement, floor slabs should be separated from all bearing walls and columns with 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 basement level slabs 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 should 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 the area and where clay soils are present 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. 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 1 foot below lowest adjacent finish Job No.108 616A Gec&tech -4 - grade and sloped at a minimum 1% 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 11/4 feet deep. Surface Drainage: The following drainage precautions should be observed during construction and maintained at all times after the residence has been completed: 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 6 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. 5) Irrigation sprinkler heads and landscaping which requires regular heavy irrigation, such as sod, should be located at least 5 feet from foundation walls. Percolation Testing: Percolation tests were conducted on November 5, 2008 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 Figure 1. The profile pit and percolation holes were dug by the excavator prior to our arrival on-site. The test holes (nominal 12 inch diameter by 12 inch deep) were hand dug at the bottom of shallow Job No.108 616A eatech -5 - backhoe pits and were soaked by the excavation with water one day prior to testing. The soils temperature at the time of our test varied between about 42°F and 46°F. The soils exposed in the percolation holes are similar to those exposed in the Profile Pit shown on Figure 2 and consist of about 1/2 foot of topsoil overlying sandy silty clay with scattered gravel and cobbles to the pit depth of 7 feet. Results of a USDA gradation analyses performed on a small diameter drive sample (minus 11/2 inch fraction) of the coarse granular subsoils are shown on Figure 5. The sample has a USDA classification of loam with a Long Term Acceptance Rate (LTAR) of 0.50 gallons/square feet/day. The percolation test results are presented in Table 2. The percolation test results indicate an infiltration rate between 10 and 20 minutes per inch with an average of 16 minutes per inch. Based on the subsurface conditions encountered and the percolation test results, the tested area should be suitable for a conventional infiltration septic disposal system. 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 express 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 Figure 1, the proposed type of construction and our experience in the area. Our services do not include determining the presence, prevention or possibility of mold or other biological contaminants (MOBC) developing in the future. If the client is concerned about MOBC, then a professional in this special field of practice should be consulted. Our findings include interpolation and extrapolation of the subsurface 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 Job No.108 616A ~ptech -6 - 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 excavations 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. Respectfully Submitted, HEPWORTH - PAWLAK GEOTEC .1�..0=.L, INC. Jordy Z. Adamson, Jr., P. Reviewed by: Daniel E. Hardin, P.E. JZA/vam attachments Figure 1 — Location of Exploratory Pits and Percolation Test Holes Figure 2 — Logs of Exploratory Pits Figure 3 — Swell -Consolidation Test Results Figure 4 — Gradation Test Results Figure 5 — USDA Gradation Test Results Table 1 — Summary of Laboratory Test Results Table 2 — Percolation Test Results Job No.108 616A GG�'CPtech APPROXIMATE SCALE 1" = 60' c+> o 0 0 m 4 oR / \ PROPOSED p Z \ RESIDENCE U 4 PIT 2 TRACT 5 TRACT 6 PIT 1 p P2 P 1 p "I PROFILE PIT A P3 TRACT 7 PLEASANT VALLEY RANCH 108 616A HEPWORTH-PAWLAK GEOTECHNICAL LOCATION OF EXPLORATORY PITS AND PERCOLATION TEST HOLES Figure 1 0 _ 5 10 LEGEND: / so 780 eV' 4•e 1 NOTES: PIT 1 ELEV.= 100' WC=20.8 DD=91 PIT 2 ELEV.= 103' 1X9:9 080 a qo°- °q.a +4=63 -I 200-17 PROFILE PIT ELEV.= 99.5' TOPSOIL; sandy silty clay, organics, roots, firm, slightly moist, dark brown. i +4=12 -200=70 0 5 _ 10 CLAY (CL); silty, sandy, with scattered gravel and cobbles, medium stiff to stiff, slightly moist to moist, brown, subangular rock fragments, slightly calcareous. GRAVEL (GC); clayey, sandy, with cobbles, dense, slightly moist, brown, basalt rock fragments. GRAVEL (GM); silty, sandy, with cobbles and boulders, dense, slightly moist, Iight brown. 2" Diameter hand driven liner sample. Disturbed bulk sample. Practical digging refusal. 1. Exploratory pits were excavated on November 5 and 10, 2008 with a John Deere 110 backhoe. 2. Locations of exploratory pits were measured approximately by pacing from features shown on the site plan provided. 3. Elevations of exploratory pits were measured by instrument level based on an assumed Pit 1 elevation of 100 feet. 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 boundaries between material types and transitions may be gradual. 6. No free water was encountered in the pits at the time of excavating. Fluctuation in water level may occur with time. 7. Laboratory Testing Results: WC = Water Content (%) DD = Dry Density (pcf) +4 = Percent retained on the No. 4 sieve -200 = Percent passing No. 200 sieve 108 616A eased., HEPWORTH-PAW LAK GEOTECHNICAL LOGS OF EXPLORATORY PITS a) LL a 4) 0 Figure 2 I Compression % CO - 01 (n A W N j O Moisture Content = 20.8 percent Dry Density = 91 pcf Sample of: Sandy Silty Clay with Gravel From: Pit 1 at 4 Feet • No movement upon wetting • • 0.1 1.0 10 100 APPLIED PRESSURE - ksf 108 616A Geirt&etch Hepworth—Pawlak Geotechnical SWELL-CONSOLIDATION TEST RESULTS Figure 3 :;01:1fl4P1•114 _1 BXC HYDROMETER ANALYSIS I SIEVE ANALYSIS TIME READINGS U.S. STANDARD SERIES 1 CLEAR SQUARE OPENINGS 24 -IR. 7 HR 0 45 MIN. 15 MIN. 60MIN19MIN.4 MIN. 1 MIN. #200 #100 #50 #30 #16 #8 #4 3/8" 3/4" 1 1/2' 3" 5"6" 8" 100 10 20 30 40 50 60 70 80 90 100 .001 .002 .005 .009 .019 .037 .074 .150 .300 .600 CLAY TO SILT GRAVEL 63 % 1 1.18 DIAMETER OF PARTICLES IN MILLIMETERS LIQUID LIMIT % SAND 2.36 4.75 FINE 1 MEDIUM 1 COARSE SAND 20 % 9.5 19.0 12.5 GRAVEL 37.5 FINE 1 COARSE 76.2 152 203 27 COBBLES SILT AND CLAY 17 % PLASTICITY INDEX % SAMPLE OF: Silty Sandy Gravel with Cobbles FROM: Pit 2 at 5 to 6 Feet 108 616A m h Hepworth—Pawlak Geotechnical GRADATION TEST RESULTS 90 80 70 60 50 40 30 20 10 0 Figure 4 0 45 MIN. 15 MIN. 60MINI9MIN.4 MIN. 1 MIN. #200 HYDROMETER ANALYSIS TIME READINGS U.S. STANDARD SERIES 1 CLEAR SQUARE OPENINGS #100 #50 #30 #16 #8 #4 3/8" 3/4" 11/2' 3" 516" SIEVE ANALYSIS 10 20 30 40 50 60 70 80 90 100 .001 CLAY 002 .005 .009 SILT GRAVEL 15 % LIQUID LIMIT % USDA SOIL TYPE: Loam 019 .037 074 150 .300 .600 1.18 2.36 4.75 DIAMETER OF PARTICLES IN MILLIMETERS SAND I V. FINE 1 FINE 1 MEDIUM 1 COARSE 1". COARSE SAND 26 % 108 616A Gy,ly L d, HEPWORTH-PAWLAK GEOTECHNICAL 1 { 9.5 19.0 12.5 GRAVEL 37.5 SMALL 1 MEDIUM 1 LARGE SILT 39 % CLAY 20 % PLASTICITY INDEX % 76.2 152 203 127 FROM: Profile Pit at 4 to 5 Feet USDA GRADATION TEST RESULTS COBBLES 100 90 80 70 60 50 40 30 20 10 0 LAtioll IS LF*9Ir![e Figure 5 Job No. 108 616A z -J w U_ Z LU S W U I- 1-- >- 0 O CeLu O 0ti J J co Q¢5 CL = O c w 2 2 U SOIL OR BEDROCK TYPE Sandy Silty Clay with II Gravel Silty Sandy Gravel with II Cobbles USDA Classification - II Loam UNCONFINED COMPRESSIVE STRENGTH (PSF) ATTERBERG LIMITS 0x 0 z 3 0 a "" 0 Hz 0LU V oN W Oy aaz 17 70 Z 0 P g O z ,...9. in 0 N000 0L, GRAVEL (%) M N NATURAL DRY DENSITY (PCO O\ NATURAL MOISTURE CONTENT (%) 20.8 OCATION DEPTH (ft) 4 '.o 2 to 2 N a) w O ti a HEPWORTH-PAWLAK GEOTECHNICAL, INC. TABLE 2 PERCOLATION TEST RESULTS JOB NO. 108 616A HOLE NO. HOLE DEPTH (INCHES) LENGTH OF INTERVAL (MIN) WATER DEPTH AT START OF INTERVAL (INCHES) WATER DEPTH AT END OF INTERVAL (INCHES) DROP IN WATER LEVEL (INCHES) AVERAGE PERCOLATION RATE (MIN./INCH) P-1 54 5 8 71/2 1/ 10 71/2 71/ 1/ 71/ 63/4 1/2 63/4 61/4 1/ 61/4 53/4 1/2 53/4 51/2 1/4 51/2 43/4 3/4 P-2 44 10 61/4 6 3/4 20 6 51/4 3/4 51/4 41/2 3/4 41/2 4 1/2 4 31/2 1/2 31/2 3 1/2 3 21/2 1/2 P-3 54 10 Water added 5 41/2 1/2 17 41/2 33/4 3/4 33/4 21/2 3/4 10 9 1 9 81/2 1/2 81/2 71/z 1 71/2 71/4 1/4 7V4 63/4 1/2 Note: Percolation test holes were hand dug in the bottom of backhoe pits and soaked one day prior to testing by the client. Percolation tests were conducted on November 5, 2006. The average percolation rates were based on the last three readings of each test.