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HomeMy WebLinkAboutSite PlanABSORPTION/TREATMENT FIELD--ti,�,• USE 13 QUICK-4'CHAMBERS INI TRENCH FOR A TOTAL ABSORPTION AREA OF 156 S.F. THE SYSTEM SHALL BE PLUMBED FOR EQUAL GRAVITY DISTRIBUTION. THE CHAMBERS SHALL BE INSTALLED ON LEVEL GRADE IN EACH TRENCH. THE BOTTOM OF EACH TRENCH...,, 1� GYC TO BE EXCAVATED TO A MAXIMUM AVERAGE DEPTH OF 36 INCHES BELOW THE EXISTING SURFACE GRADES, WITHIN THE UPPER HORIZON OF THE NATIVE CLAY LOAM SOILS & BACKFILLED WITH A MINIMUM 124NCHES OF COVER OVER THE CHAMBERS. a THE FINISH GRADE ACROSS THE FIELD SHALL BE SLIGHTLY MOUNDED A MINIMUM \ 6-INCHES ABOVE EXISTING ADJACENT GRADES. ti coo low INSTALL 4' RISER PIPE INSPECTION-VDRISERW:' PUSH ON CAP MIN, 4" BELOW FINISH II -:iVFR WITH b" �*; •_., '"'""^-- �...,�,• DIA.VALVE BOX SET WITH LID I A( - (TYP. EACH TRENCH Cr- . _: • v a INSTALLCHAMEL- • t , ONALLEND.``• EXCAVATION DEPTH I' MIN:4'MAX. BELOW SUP GRADE MINIMUM. 12" COVER OVER TOP OF CHAI`1i.,, to INSTALL A 2-COMPARTMENT 1000-GALLON CONCRETE SEPTIC TANK (USE VALLEY PRECAST ITEM-10OOT-2II OR EQUAL) -•-.yp(------i INSTALL INLET SANITARY TEE & OUTLET EFFLUENT FILTER ASSEMBLY. INSTALL WITH (2)-24" OIA. BY 30" DEEP CONCRETE RISERS WITH LIDS. may; TOPOF RISERS/LIDS TO BE INSTALLED @ + 3" ABOVE FINISH GRADE. a x -+ -- 4" PVC SEWER PIPE .:@ 2%, • USE SCHDAO OR SDR-26 •.• '� FILL& GRADE FIELD AREA APPROXIMATIiY3"-6"ABOVE • . EXISTING t-ACEGRAI ,ffPROPOSED 4"2:-WAYCLEANOUT �f ' • I 4" PVC EFFLUENT PIPE @ MIN. 1%, I USE SCHD-40 OR SDR-35 tom,„ BUILDING EXIT INVERT ELEVATION: 5433.1)T FFE 5435.4 l�N! TS EXTERIOR D 135,38 P SCALE 40 ( IN FEET) 1 inch = 20 ft. )i INTERIOR INVERT ELEVATION:5434.S6TOVE ( �� 1 �I FFE 5435.4 LOAD INTER 1�7R LOADING ---� -_ A`'�' ) } UNITS --:... _"54 5 " A4lfl -...- C RS4rLt3k"TAD Rolm a.,•mn rw=a. xawmP P,Pnw a "- ' 4R „MR.f s_ai+be we.ax alv€ VRAIM44,09101111 1 GRAPHIC SCALE Ai 40 VIA .�AIIIIIIIINIII4 (IN FEE[) 1 inch = 40 ft. NATIVE, YARD OR LANDSCAPED SURFACE i CONNECT INDIVIDUAL 4" DISTRIBUTION PIPEMIN.- TO HEAD OF EACH CHAMBER TRENCH (TYPICAL EACH TRENCH),INSTALL CONNECTION AS NEEDED i�%��� PORT OF EACH INFILTRATOR CHAMBER REND CAP. END OR SIDE INLET �'� ` ij 6"'}MIN. EXCAVATED MATERIAL COMPACTED 1. TO 90% STANDARD PROCTOR r- CHAMBER END CAP SUITABLE BACKFILL OR 4" l-I CLASS 6 ROAD BASE COMPACTED SUBGRADE TMICH CROSS -ACTION FOR SDR 35.26 OR SCHD-40 PIPES N.T.S. so FreeUp Design Calculations OWTS GENERAL NOTES: The design flow is calculated as follows for low useage commercial facility pnsite wastewater treatment system (OWTS) 1. THE OWTS AS 5HOWJON THE PLAN AND THE DETAILS ' WERE DESIGNED BY SOPRIS'ENGINEERING. From the Regulationusage Table 6=2: Max. Design Row lOd) = N of people x (avg. per capita flow) 2. THE EXISTING/ PROPOSED LOT CONDITIONS SHOWN ARE BASED ON FIRWOOD DESIGN GROUP SITE Cdf-daily worker office: 2 persons @ 15 Spit = 2 x 15 = 30 gpd DRAWINGS. r Ctd=transient Vistor:: 5 persons@ 6 gpd =3 x5 =30 gpd 3. PRIMARY OWNER NAME ANDADDRESS: FREEUP STORAGE ).LC, 1440 BRICKYARD ROAD UNIT 4, Average Peak Day Flow Qavg = 60 gpd, Minimum Design Flow Qd = 75 go GOLDEN, CO, 80403 Septic Tank Design: 4. SITE ADDRESS: 357 S 16TH STREET, SILT, CO 81652 ,§ Use a 1001) gallon, two compartment concrete septic tank with an effluent filter outlet sanitary S. Legal Summary: SECTION: 10 TOWNSHIP: 6 RANGE: 92 TR IN THE S1/251/2Ni/2N€:AND LOTS 1 & 2 0 28377 # tea in the second chamber. Tank shall be Installed with seated concrete risers and lids to thefinish8.95 ACRES grade surface. 0� 6. Parcel Number:217910100018 Sub Surface Conditions and Testing: 7. GARFIELD. COUNTY SEPTIC PERMIT #:: ISSUED 1'!At. Subsurtvestigaions were performed by Yeh and Associates, Inc. on June 10, 2022. The B .CONTRACTOR: tt soils in the area of the proposed absorption field Were sampled and characterized by application of the Sieve Analysis Method and Stress Testing, The soils were tested to determine the hydraulic m loading rate and to confirm the appropriate absorptive surface suitable for conventional OWTS SYSTEM NOTES absorption systems in native soils. A shallow and deep excavated pit was obsenred in the western u3 central rtion of the site ad' cent to the 1. - ALL MATERIALSANDINSTALLATION SHALL CONFORM TO STATE AND COUNTY ONSITEpo proposed Relit location. The soils below 4 6 inches of I WASTEWATER TREATMENTSYSTEM(OWTS) REGULATIONS.sand and gravel fopsoii �onsistof soft loose sandy clay loam. The percentage of cobbles atitl st bl gravesi below 24 inches was less than 20%in the sandy clay loam to the 12-14 foot depth explored. The soil appears to be consistent across the site. 2. IT IS THE RESPONSIBILITY OF THE CONTRACTOR TO CONTACT ALL UTILITY • COMPANIES FOR o FIELD LOCATIONS OF UTILITIES PRIOR TO CONSTRUCTION AND EXCAVATION. in The native soilssampled from pied our 2-3 below the surface are as a 3 3.. ALL SEWER LINES TO BE SDR-35 OR SCHEDULE 4O'P.V.C. PIPE UNLESS NOTED OTHERWISE. J Q m m h moderate structure. This soil consisting of stay loam texture with moderate granular structure. This soil boson effective loading n effective Z $ � rate for conventional soil treatment of 0.35 gal/S.F./day for a level 1 conventional treatment 4. INSTALL A TWO-WAY CLEAN OUT ON THE SERVICE LINE FROM THE HOUSE AND AN system. The equivalent percolation rate is assumed to be approximately 41-60.. minutes per inch, ADDITIONAL CLEANOUT WITHIN 1OO'-.SECTION Of EFFLUENT DISCHARGE PIPE. Increased quantities of gravel are encountered at shallow depths within 1-foot of the existing } surface rode. No free water was encountered in the excavations on site. Groundwater glevels are S. THE SEPTIC TANK SHALL BE INSTALLED LEVEL ON COMPACTED EARTH. INSTALL WATERTIGHT m } m expected to be well below 10 feet from the existing surface grades. The soils appear suitable for a RISERS AS NECESSARY TO BRING ALL REQUIRED ACCESS POINTS TO THE FINISHED SURFACE Q conventional shallow absorption field consisting of gravelless infiltration chamber units. GRADE. BACKFILL WITH SUITABLE NATIVE SOIL FREE OF BOULDER AND ROCK IN EXCESS OF 3" 0 Z U DIAMETER, Treatment -Soil Treatment Unit/ Absorption System Design: uJ 4 f� Lu 6. A SANITARY BAFFLE TEE IS REQUIRED ON THE SEPTIC TANK INLET AND OUTLEL INSTALL THE U The treatment/absorption field is designed based on utilizing the effective Long Term Acceptance INLET AND OUTLET TEES PLUMB AND IN A POSITION TO ALLOW EASY INSPECTION AND Rate (LTAR) for the native soils and the application of appropriate loading factors for a soil MAINTENANCE OF TANK FROM THE TANK RISERS treatment unit system utilizing gravity distribution to gravelless chamber trenches. The new treatment system and absorption field will consist of gravity distribution of septic tank effluent via. 7. INSTALL A 4" EFFLUENT FILTER ON THE 4" OUTLET TEE OF THE SEPTIC TANK. THE FILTER a concrete distribution box to individual chamber trenches with treatment across the scarified SHOULD BE INSPECTED EVERY SIX MONTHS. THE EFFLUENT FILTER SHALL BE MAINTAINED AND native soil absorptive surface. CLEANED WHEN THE TANK IS PERIODICALLY PUMPED OR AS NECESSARY. INSTALL A SUITABLE EXTENSION ON THE FILTER WITH A HANDLE TO BE WITHIN 6" BELOW THE ACCESS LID. J Long Term Acceptance Rate (LTAR) J Wastewater Treatment Level 1; loath rate for sand clay loam is 0,35 al: S.F./da for soil 8. THE CONTRACTOR SHALL ENSURE THATTHE SEWER LINES, SEPTIC TANK AND RISERS ARE loading Y Y ( 8 / Y) type WATERTIGHT, c1l 3•; ALL PLUMBING FIXTURES AND OWTS COMPONENTS SHALL BE INSTALLED AND In to co Luading Factors; (Table 10-2, Gravity application trenches =1.0)and MAINTAINED TO AVOID SURFACE OR GROUNDWATER FROM ENTERING THE SYSTEM AND TO Z W m r a3 Z PREVENT LEAKAGE FROM THE SYSTEM. IN-HOUSE PLUMBING FIXTURES SHALL BE MAINTAINED (Table 10-3, graveness chambers =0.1) W Cf +•- t1 4 TO PREVENT EXCESS WATER FROM ENTERING THE SEPTIC SYSTEM. t3.1 Q F U � A(sf) = Qd .: A =Area; 4, THE DIMENSIONS AND NOTES SHOWN ON THE PLAN INDICATE MINIMUM AREA, LENGTH, LTAR LTAR = 0.35 Gal/S.F./day for clay loam Z J Z W a � �p WIDTHS AND SEPARATION DISTANCES FOR THE TRENCHES, BED OR MOUNDED ABSORPTION Od = flow (gal/day) = 75 gpd- - Q CD o CD 2 FIELD.. L.F.1=1.0 Gravity Distribution Z Z Z N p L.F.2=0.7 Chambers 10. THE ABSORPTION TRENCHES SHALL 0E EXCAVATED TO LEVEL GRADE IN NATIVE EARTH. THE 0 in i W TRENCH BOTTOM AND SIDEWALLS SHALL BE SCARIFIED AND/OR RACKEDJF SMEARING A(sf) = 75 gpd x 1.0 x 0.7 = 150 S.F. U < OCCURS. IF EXCESSIVE LARGE COBBLES OR BOULDERS ARE ENCOUNTERED IN ANY PART OF THE 0.35 Gal/S.F,/day EXCAVATION OVER 6" FROM. THE PROPOSED TRENCH BOTTOM SURFACE, OVER EXCAVATE AND _ BACKFILL WITH SAND. Number of quick-4 chambers: IY Jul 150 S.F = 12.5 chambers, Use 13 Quick-4 Infiltrator chambers or equivalent bio•diffusers. 11. THELEACHINGCHAMBERS SHALL BE INSTALLED LEVEL WITH A MINIMUM COVER OF 10INCHES 0. 0 12 S.F./Chamber NOT TO EXCEED 24INCHES, (/ Use 13 Quick-4 infiltrator chambers in one trench 54' long by 3' widewith two end caps as 12. LEACHING CHAMBERS WILL BE PLACED IN THE EXCAVATION OVER THE NATIVE SOIL OR SELECT "" ` delineated on the plan, The septic tank effluent will be gravity distributed to the head of the SOIL REPLACEMENTOR ASTM-33 SAND LEVELING COURSE. END CAPS SHALL BE INSTALLED ON chamber row via a 4" distribution pipe from the septic tank. Additional soil evaluation widtbe THE END CHAMBERS IN EACH TRENCH. Lu performed during construction to verify the sons in the excavation. ¢ - 13. VERTICAL INSPECTION PORTS SHALL BE INSTALLED FROM THE PRE MARKED HOLE ON THE TOP p OF EACH END CHAMBER CAP. (TYP„ BOTH ENDS OF EACH. ROW) THE PORTS MAY HAVE THREADED CAPS ATGRADE. 14. THE CHAMBERS WILL BE BACKFILLED WITH EXCAVATED MATERIAL VOID OF ROCKS, THE in BACKFILL MATERIAL SHALL NOT EXCEED 2 1/2" DIAMETER AND SHALL BE PLACED TO AT LEAST 6INCHES ABOVE THE TOP OF THE CHAMBERS. THE TOP OF THE PLACED BACKFILL SHALL BE COVERED WITH A LAYER OF FILTER FABRIC. A MINIMUM 4" DEPTH OF TOPSOIL IS TO BE PLACED ABOVE THE BACKFILL TO THE SURFACE & RE VEGETATED. 15. INSTALLATION OF LEACHING CHAMBERS SHALL BE IN CONFORMANCE WITH THE ---.-__-- _-- -_---. ____ ..._. _. _•„' MANUFACTURES INSTALLATION INSTRUCTIONS. g ii U%m uAlion iop tII@I°8m - 2ca 1, 16, THE ABSORPTION TRENCHES/BED OR MOUND MUST BE GENERALLY MARKED AT THE FOUR CORNERS'. WITH INSPECTION PORTS AND/OR BURIED RERAR. THE FIELDS MUST BE PROTECTED OW - FROM VEHICULAR AND LIVESTOCK TRAFFIC, 17.. THE ABSORPTION FIELD SURFACES: MUST BE SLOPED OR SLIGHTLY MOUNDED TO DIVERT - �11 �o-p A.+"P. rmn"rtca Ywl pr A M GIZi? • Y_ 6 M aPF Ka = b,6Ce AA .M A�sa�w.n, to w arc m S !e'.M. p"nE c� rY P•tl YrnM • 'vA b tic Ba4/'IPa ".Fn!M"YY a. r,Mcc•wPVCWy cmnP•M.L ' 1� rvolaYa y `o"••wo ne Top SURFACE DRAINAGE AWAY FROM THE FIELD. Z view a IS. THE ENTIRE ABSORPTION FIELD SURFACE MUST BE RE VEGETATED. (n 5 uJ 19. THE ABSORPTION FIELD SHALL BE. INSTALLED PER THE REQUIRED SETBACK DISTANCES: X 10 feet from any property line. 25 feet from any potable water supply line. 2D feet from any occupied dwelling. 100 feet from a well s rin or ciste for.• ny _ waa,muwa ex a•.ot«•a ww ,aw ra.a-.,�� �1... PAD, � ,..,• • Ww h&w-M b,giiW - ,"wctwc -»vr MY Sv9n YF+t.,i.l loot[ yty Fleury - I LQN'4Blr tlUR" d � f s ) � Flow OWN r x t ( , P 9 rn. SD feet from any Stream or water course. DISTRIBUTION SYSTEM NOTES: 1. AN EFFLUENT FILTER SHALL BE INSTALLED IN THE DISCHARGE TEE IN THE SECONDARY COMPARTMENT OF THE SEPTIC TANK. WE RECOMMEND THE INSTALLATION OF AN ORENCO SYSTEMS 4" EFFLUENT FILTER FILTERED EFFLUENT THAT WILL DISCHARGE TO ACONCRETE DISTRIBUTION BOX WITH RISERS:AND UO AT THE SURFACE. 2, THE DISTRIBUTION SYSTEM WILL 8E INSTALLEDTD ALLOW FOR EFFLUENT TO BE EQUALLY Z Z 4 le, ui I DISTRIBUTED TO THE ABSORPTION TRENCHES VIA INDIVIDUAL 4' DISTRIBUTION LINES y e ` a CONNECTED TO THE HEAD OF EACH CHAMBER TRENCH. SeDtion 3. THE MINIMUM SLOPE OF THE DISCHARGE LINE FROM THE TANK TO THE DISTRIBUTION BOX °• ,'" °• --------qqr�_ t VIBW SHALL SHALL BE INSTALLED AT AMINIMUM 1% SLOPE. THE INDIVIDUAL DISTRIBUTION z `A"_ L; _�•) UNESATTHEHEADOFTHETRENCHESSHALLBEINSTALLEDATAMINIMUMOF2%SLOPE. Q -- �p.)ny Scam G'mert n7aept4lM! NH COPac.ly M.[ &tgw: TESTING, INSPECTIONS AND CONSTRUCTION MANAGEMENT: +..""v , >' N:m .rl•r U.rwt :.gym u^m. n•;gnl Intal sa• A,fl.r Term uU rmez rev"s 1,. ADDITIONAL GEOTECHNICAL EVALUATIONS AND INSPECTIONS BY THE ENGINEER SHOULD BE W Z " w sE_ 53- I'll W Ba• 681 9W 323-qd 1040 20.M� O. 9sa -�. : -., PERFORMED DURING INITIAL STAGES OF CONSTRUCTION TO VERIFY SOIL CONDITIONS AND �--- i_� - _ _..._ -.. . .....- OWTS DESIGN. 'T�IS 2. THE EVALUATIONS AND INSPECTIONS MAY RESULT IN MODIFICATIONS TO THE DESIGN. THAT ��,, --J U) U P`hono: MAY INCLUDE FIELD SIZE REVISIONS AND POSSIBLE SOIL REPLACEMENT IN SELECT AREAS IF � � 0 J ' FI71911119 2a NEEDED. SUFFICIENT NOTICETO'THEENGINEER BYTHE PROJECT MANAGER/CONTRACTOR � F^ 0_ �A"B♦Y� ' tAAtlrifiiTS LAC. YWb�: Farit: 771 NEEDS TO BE MADE IN ORDER TO SCHEDULE THE SITE INSPECTIONS. J `[] ( Q Z Vista, .. � -0 - 3. PRIOR TO CONSTRUCTION OF THE PERMITTED SYSTEM THE ENGINEER SHOULD BE CONTACTED U W cWc 1_ BY THE PROJECT MANAGER/CONTRACTOR WELL IN ADVANCE TO PROVIDE ADEQUATE TIME Q W J G` - --------_ TO DISCUSS THE SYSTEM COMPONENTS WITH THE CONTRACTOR, ANSWER QUESTIONS, RESOLVE AU_ CC Q LLJ ANY CONFLICT ISSUES AND SCHEDULE INSPECTION SITE VISITS BASED ON U CROWN FIELD TRENCH TO DIVERT SURFACE WATER CONSTRUCTION PROGRESS. W } W a - Z 4. COUNTY REGULATIONS REQUIRE THAT THE DESIGN ENGINEERS OF RECORD PERFORM SITE _' z Ci 4" PVC INLET PORT INSPECTIONS OF THE PERMITTEDSYSTEM DURING CONSTRUCTION AND PROVIDE "AS -..BUILT" ~ IN END CAP DOCUMENTATION OF THE INSTALLED SYSTEM TO THE COUNTY AFTER CONSTRUCTION IS cc � � Il C3 3'MIN 6' MIN COMPLETE. THE ENGINEERSHOULD BE CONTACTED AND NOTIFIED OF THE CONSTRUCTION SCHEDULE. CD T-'i © W =I O- U Q BACKFILL WITH SCREENED EGATATION `�,--- TOPSOIL LAYS - S. OUR DESIGN AND RECOMMENDATIONS ARE BASED OUR SITE ASSESSMENT, SOIL EVALUATION L!) d Z ONSiTE SOILS FREE OF ROCKS IN EXCESS AND UPON INFORMATION SUPPLIED TO US 13Y OTHERS. IF SUBSURFACE OR SITE CONDITIONS CL J W OF 3" DIAMETER OR USE 3/4" TO 1.5' 12"-36" ARE FOUND TO BE DIFFERENT FROM CONDITIONS ASSUMED OR INDICATED, WE SHOULD BE W 0 SCREENED ROCK - NOTIFIED TO EVALUATE ANY EFFECT ON THE PROPOSED OWTS IF THE COUNTY REQUESTS a:�'^ ' CHANGES OR MODIFICATIONS TO THIS DESIGN, WE SHOULDSE CONTACTED TO EVALUATE CR AND RESPOND TO THE REQUEST. W { n Q PILFER FABRIC � LEACHING 12" 6. CONTRACTOR SHOULD REVIEW ANY CONDITIONS ON THE ISSUED PERMIT AND COORDINATE Q CHAMBER ( WITH THE ENGINEER REGARDING CONSTRUCTION OFTHE SYSTEM. L'� W BACKFILL LAYER NATURAL ONSItE SOILS FREE OF ROCKS I, 5. 7. IF YOU HAVE ANY QUESTION OR NEED ANY ADDITIONAL INFORMATION, PLEASE CALL PAUL SCARIFY/TILL BOTTOM SURFACE TO A DEPTH UNDISTURBED EARTH SANDY-� RUTLEDGEAT SOPRIS ENGINEERING, 7040311, U)OF 3" AND PLACE MIN. 3" OF ASTM-33 CLAY LOAM SOIL. Z SAND LEVELING COURSE. 0 NOSE: ALL CHAMBERS IN EACH TRENCH MUST BE INSTALLED ON LEVEL GRADE OVER 3" ASTM-33 FILTER SAND LEVELING COURSE. MAXIMUM DEPTH OF TRENCHES NOT TO EXCEED 36" BELOW PROPOSED SURFACE GRADES, INLET AND END CAPS ARE TO BE INSTALLED ON EACH END CHAMBER ROW. IF EXCESSIVE LARGE COBBLES OR BOULDERS ARE ENCOUNTERED IN ANY PART OF THE EXCAVATION, OVER EXCVATE AND BACKFILL WITH SAND OR SUITABLE SCREENED NATIVE SOILS, CHAIMR TRENCH CROSS SECTION DETAIL DATE: SEPT 21, 2023 JOB NO. 33072.01 SHEET C1