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HomeMy WebLinkAbout03397 TYPE OF INDIVIDUAL SEWAGE DISPOSAL SYSTEM PROPOSED: ( 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: (o 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? N 0, PERCOLATION TEST RESULTS: (To be completed by Registered Professi al Engineer, if the Engineer does the 6 ,_ Percolation Test) ,_ A Pct t -J) & 0..E4/LS Iz_Po e.: 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: 114 r1. W 1 ert-ta S (ACC I C,u_HH1Sc0 a-vt- 6uiT� 110 GI 4U-44CM el. ON S' /5as (77 z vs - - Yo,?8 Name, address and telephone of RPE responsible for design of the system: €CO4Cdhi.,c.al Eirly i diee e in 6+eo Ll 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 legal . / ion for perjury as provided by law. Signed / / Date r/ / 6/00 PLEASE DRAW AN ACCURATE MAP TO YOUR PROPERTY!! 3 1 1 1 at test pit, TP -4. No groundwater was identified to the depths explored. Percolation testing was performed on the prewetted holes. Percolation rates ranged from 8 to 40 minutes per inch. Average percolation rates measured varied from 17 to 20 minutes per inch. We assumed a percolation rate of 30 minutes per inch for design calculations. Results of percolation testing are included in 1 Appendix A, attached. 1 1 DESIGN CALCULATIONS 1 1 We understand that an engineered system is required on the subject site and that an infiltrator type system is desired. We believe an infiltrator system can perform satisfactorily for the proposed residence. Due to the slope of the lot, we 1 believe a trench distribution system may be more feasible than a bed system. Calculations and design parameters used to size the absorption field follow: 1 1 1 1 1 1 1113 Haubinger Drive, Glenwood Springs Sewage Disposal System Design GEG Job No. 493 4 1 1 1 1 by the design engineer and the Garfield County Building and Sanitation Department. ' 7. The installer should provide 48 hour notice to the engineer and the Garfield County Building and Sanitation Department for inspection. 1 8. An infiltrator system consisting of interlocking segments should be used. Our analysis used an infiltrator segment with a capacity of 122 gal (16.3 cubic feet), 72 inches by 14 inches by 36 inches. If a I different sizing is used it may affect the reduction allowed for the absorption trench area. The design engineer and Garfield County Building and Sanitation Department should be notified of any ' changes in infiltrator used. 9. The system contractor shall be aware of the potential for I construction activities to reduce soil permeability's at the site through compaction, smearing, and shearing. The following precautions and construction procedures should be employed during installation to 1 mitigate disturbance to native soils: a. Excavation should proceed only when the moisture content of ' the soil is below the plastic limit. b. Excavation and backfill equipment should work from the I surface where at all practical to avoid compaction of the soils at depth. 1 c. 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 I troweled surface. Any smoothed or smeared surfaces should be removed with a toothed rake or shallow ripper taking care 1 to remove loose residues from the bottom of the excavation by hand if necessary. I d. Care should be taken in placing fill materials in the excavation to avoid damaging the exposed soil surfaces. 1 1 ' 1113 Hechinger Drive, Glenwood Springs Sewage Disposal System Design GEG Job No. 493 9 1 1 1 ' client. Geotechnical Engineering Group does not accept responsibility for variation in the assumed design parameters. 1 ' We believe this design was conducted in a manner consistent with that level of care and skill ordinarily used by geotechnical engineers practicing in this area at this time. No other warranty, express or implied, is made. If we can be ' of further service in discussing the contents of this report or the analysis of the influence of the subsurface conditions on the design of the proposed 1 construction, please call. 1 GEOTECHNICAL ENGINEERING GROUP, INC. ' Gregory G. Poettge 4, ' Staff Engineer Reviewed by: f QP po FE r , 49 T 30324 9N . � , ti 1 7 John P. Withers, P.E. Principal Engineer ` sionim,e (3 copies sent) GGP:JPW:mk 1 1 1113 Hettinger Drive, Glenwood Springs Sewage Disposal System Design GEG Job No. 093 12 1 1 ' ISDS Design 1113 Heubinger Drive ' Glenwood Springs, Colorado 1V 1 1 y v • \ r r‘, 5957 ,c �� � � ,Q ; I , — II i It It \ ■ \ C " \ ,_ \ti S r ye -�" \ l\ � . — :v vc .- • v \ se I \ \ r % O ' tr. S ubject Site 4 °' "'- - -- •4 v\ • -- -' - - ' - - - - -' - i \ , r,?; : - -r• V 1 ■1f i I I • ■ ' — c t: - , : o m � � � v � fe d iYrt , ! i t 1 Job No. 493 Vicinity Map Fig. 1 1 1 1 Geotechnlcal PERCOLATION TEST I Englnooring , Group, Inc. DATE: June 16, 2000 SATURATION AND PREPARATION WATER IN BORINGS AFTER SATURATION I DATE: June 15, 2000 YES X NO PERCOLATION TEST RESULTS pEPTH TO WATER TIME AT TIME CHANGE PERCOLATION HOLE DEPTH START OF INTERVAL START OF END OF IN WATER RATE 1 NUMBER (INCHES) INTERVAL (MINUTES) INTERVAL INTERVAL DEPTH (MIN /INCH) (INCHES) (INCHES) (INCHES) TP -2 12 11:10 10 3.75 4.5 0.75 13 1 11:20 10 4.5 5 0.5 20 11:30 10 5 5.5 0.5 20 11:40 10 5.5 6 0.5 20 11:50 10 6 6.5 0.5 20 I 12:00 10 6.5 7 0.5 20 12:10 10 4.5 5 0.5 20 1 12:20 10 5 5.5 0.5 20 12:30 10 5.5 6.25 0.75 13 1 1 1 1 1 1 1 Job No. 493 Fig. A -2 1