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Home My WebLink AboutEngineer's OWTS Design PlanHuddleston-Berry Engineering & Testing, LLC Dale Bauer dale@truenorthcolorado.com Subject: OWTS Design 611 Scutter Lane Rifle, Colorado Dear Mr. Bauer, 2789 Riverside Parkway Grand Junction, Colorado 81501 Phone: 970-255-8005 Info@huddlestonberry.com October 30, 2025 Project#03122-0001 At your request, Huddleston-Berry Engineering & Testing, LLC completed design of an Onsite Wastewater Treatment System (OWTS) for a new single-family residence at 611 Scutter Lane in Rifle, Colorado. The site location is shown on Figure 1 — Site Location Map. A site plan is included as Figure 2. Site Description At the time of the investigation, the site was open with undulating terrain. The investigated area was located on a hilltop. Topography surrounding the investigated area consisted of moderate to steep slopes. Site topography is shown on Figure 2. Vegetation consisted primarily of weeds, grasses, and trees. The site was bordered to the north, west, east, and south by large residential parcels. Subsurface Investigation In order to evaluate the subsurface conditions at the site, four test pits were excavated across the site. Using visual -tactile classification methods, the soil profile consisted of 1.0 foot of topsoil above tan and brown, moist, medium dense silt loam soils with a weak granular structure to the bottoms of the excavations. The site soils are consistent with Soil Type 2A. Groundwater was not encountered in the subsurface at the time of the investigation. In general, based upon the results of the subsurface investigation, HBET believes that the seasonal high groundwater elevation is deeper than 8.0 feet below the existing grade at this site. The locations of the test pits are shown on Figure 2. Copies of the test pit logs are included in Appendix A. 611 Scutter Lane #03122-0001 10/30/25 Onsite Wastewater Treatment System y9Huddlcston-Berry 1 ,,&K,6n & Ttt 1,g, LLC Seepage Bed Design The design of the absorption system generally follows the requirements of the Garfield County Department of Public Works as outlined in the Garfield County On -Site Wastewater Treatment System Regulations, effective June 2018. The proposed construction at the site is anticipated to include a three -bedroom residence. Based upon the visual tactile classification of the soils, a Long -Term Acceptance Rate (LTAR) of 0.5 will be utilized for the absorption field design. Infiltrator Systems Quick4 Standard Chambers are proposed. The daily flow of the sewage disposal system is calculated below and a plan and profile of the absorption system are shown on Figure 3. Average Daily Flow = (6 persons)(75 GPD/person) = 450 GPD Soil Treatment Area = (450 GPD / 0.5) = 900 Square Feet Adjusted Soil Treatment Area = (900 SF)(1.2)(0.7) = 756 Square Feet # of Quick4 Chambers = (756 / 12) = 63 Chambers; Use 64 Chambers System Installation The installation of the septic tank, plumbing lines, Infiltrators, etc. should be completed in accordance with the Garfield County On -Site Wastewater Treatment System Regulations and Infiltrator Systems, Inc. specifications. In addition, the following construction procedures are recommended: • The septic tank and distribution box should be placed level over native soils that have been scarified to a depth of 8 to 12 inches, moisture conditioned, and recompacted to a minimum of 95% of the standard Proctor maximum dry density, within f2% of optimum moisture content. However, up to 3-inches of washed rock or pipe bedding passing the 1-inch sieve may be used as a leveling course under the septic tank and/or distribution box. • The bottoms of trenches and backfill around the septic tank and distribution box which will support sewer or effluent lines should be compacted to at least 90 percent of the standard Proctor maximum dry density, within f2% of optimum moisture content. Pipe bedding should have a maximum particle size of 1-inch. ■ Vehicular or heavy equipment traffic and placement of structures should not encroach within 10 feet of the septic tank or distribution box. Inspection Schedule Huddleston-Berry Engineering & Testing LLC should be retained to monitor the construction of the OWTS. The following schedule of observation and/or testing should be followed: ■ Observe the absorption bed excavation prior to placement of Infiltrator chambers. Observe placement of the septic tank, distribution box, and all connecting sewer and effluent lines prior to backfill. Verify proper fall between inverts. ■ Observe and verify installation of the absorption bed prior to placement of cover and backfill. YA2008 ALL PROJECTS\03122 -Dale Bauer\03122-0001 611 Scutter Lane\200 - Geo\03122-0001 OWTS103025.doc 2 611 Scutter Lane n #03122-0001 Huddleston-Bcrty E,&... i,g S T,,11,g, LLC 10/30/25 In conformance with Garfield County regulations, HBET will be required to provide the Garfield County Health Department with documentation certifying that the OWTS was placed in conformance to the plan and profile and Garfield County regulations. General Notes The OWTS design was based upon the results of the subsurface investigation and on our local experience. The design is valid only for the proposed construction. We are pleased to be of service to your project. Please contact us if you have any questions or comments regarding the contents of this report. Respectfully Submitted: Huddleston-Berry Engineering and Testing, LLC Wayne D. Anderson, P.E. Project Engineer YA2008 ALL PROJECTS\03122 - Dale Bauerk03122-0001 611 Scutter Lane\200 - Geo\03122-0001 OWTS103025.doc 3 FIGURES Puh j��_��e Garfield County, CO �_ �_ FIGURE I Date created: 4/11/2024 Last Data Uploaded: 4/11/20242:16:08 AM Site Location Map Developed by(,,m Schneider 10ECS PAT! 7,L SITE PLAN EXISTMDDRNE'PIAY- >;7C18Tpt6ODON5ET Exlsmaa CONW ETE SLAB I I ;]11 R VEANBIXfAVARY I I rj Z "AS5ULIED WATER L L_� U LOCATION tYtiEi SCALE: 1 " = 200' C.I.=2FT F� r TEST PITL� ENLARGED VIEW ��E1O6TC1G DRIVEIYAY !ENLARGED YEi'1 BOUNDARY 7 II IXISTING GUONSET ASSULIEDWATE4 iLINE LOCATION S *TM OFFAL i /EXISTING CONCRETE SLAB BUILDING i i NEW RESIDENCE i i iPTIC TAHK WITH COVEREDPORCH MINIMUM 1,000 iGALLON CAPACITY i STA -REPAIR AREA- I SIZED FOR SEQUENTIAL I if '-DISTRIBUTION SCALE: 1" = 30 GENERALIZED SYSTEM PROFILE NOT TO SCALE RESI➢ENTIAL aSSCRi 0ai NI=STAAn STRUCTURE yLf�Alys =N TINT LIES A AT E4 A4WL iLRW VN9C IflILfRAIyA OulCN IiwlT,wq➢ CIVA4m 1AI FT !OK N'IR AI Iila➢0f1 L LTA. Y➢ TO �A f T EST. 1.0 FT L5 FT NAK. LO FT MIN LOVER — 0[SailNsiPA MI VITN iI.OV ibYL1ARS e Ca1WARW AP SEPTIC TAW( C➢PIE APPROVED TANK N ag F TICE La PR[l"T T[E LFRT IST LIST GENERALIZED BED PROFILE NOT TO SCALE ...... SCALE ____----___, .%ILj ..R UF43 AtI1NS[[pp��3' 17,YE 12'X64' BED I 5C'IRF11{4nSi�;II RD INFILTRATORS OR L______________________J DII;LTRATOR SYSTEMS QUICK4 C(AWA 60IL. NATIVE SOILS OR OTHER SUITABLE STAti01ARBGT lArF.RS [UI!SOII PRAW TO CARRY SURFACE WATER {t AWAY M)M IIFJ1 XO.NW(WIX NEEDLE PUNCI IED.AIEQIi"AT11]: FABRIC IMMEDIATELY ABOVE CHAMBERS MINIMUM SETBACKS (UNITS = FT) — w f axa a.o uI LYIu NfCx LAa. a a.reY 9v¢Lw➢ ux➢aw ,>rAvicerr Llx: glue a4 9F 1 Ia WO 23 J7 q e3 !a S 00 q 10 b M "OTHER SETBACKS NOT LISTED HERE SHOULD BE IN ACCORDANCE WITH GARFIELD COUNTY OWTS REGULATIONS DETAIL AREA SCALE: V = 20' LNE LOCATION NNW 11=%".6 PORTS 4 ROWS OF 16 QUICK4 STANDARD IN PILTRATORS OR ENGINLER APPROVED EQUAL PORTS "USE SWEEP 90-S OR TW043-SAT90 DEGREE BENDS— PI MIN SkPrIC T&VK Willi 7JLtiLA{L51 ].000 GALLON CAPACITY 4-INCH DIAMETER SEWER AND EFFLUENT PIPE AIETT,NO ASTNI DITSS. SCHEDULE 40 OR SDR 35 rK^' BOR THAT EVEN DISTRIBUTION Project No.: 03122-0001 611 SCUTTER LANE +! Huddleston-Berry PARCEL#212728400387 Date: 10/30/25 Engineering a Tearing, LLC 2789 Riverside Parkway FIGURE 3 - SEPTIC SYSTEM By: WDA Grand Junction, CO 81501 DETAILS APPENDIX A Typed Test Pit Logs ' 1iEE Huddleston-Bevy Engineering & Testing, LLC TEST PIT NUMBER TP-1 2789 Riverside Parkway PAGE 1 OF 1 Grand Junction, CO 81501 970-255-8005 CLIENT Dale Bauer PROJECT NAME 611 Scutter Lane PROJECT NUMBER 03122-0001 PROJECT LOCATION Rifle, CO DATE STARTED 3/19/24 COMPLETED 3/19/24 GROUND ELEVATION TEST PIT SIZE _ EXCAVATION CONTRACTOR Wiseland GROUND WATER LEVELS: EXCAVATION METHOD Trackh/Backhoe _ AT TIME OF EXCAVATION Dry LOGGED BY TEC CHECKED BY MAB AT END OF EXCAVATION Dry NOTES AFTER EXCAVATION -- "-' o z U �� Lu rnw w 0 w Q p MATERIAL DESCRIPTION -j g 0-0 > x o� -j o> Y N 0 O Ur 2Z W mo UZ O W of a 0 Silt Loam, tan and brown, moist, medium dense, weak granular structure (Soil Type 2A) Bottom of test pit at 7.0 feet, w o ATTERBERG LIMITS} z w ~ LOLu U� �F F- Uw O z0 �� g= U)z w U o a- LL SREF , Huddleston-Bcny Engineering & Testing, LLC TEST PIT NUMBER TP-2 2789 Riverside Parkway PAGE 1 OF 1 Grand Junction, CO 81501 970-255-8005 CLIENT Dale Bauer PROJECT NAME 611 Scutter Lane PROJECT NUMBER 03122-0001 PROJECT LOCATION Rifle, CO DATE STARTED 3/19/24 COMPLETED 3/19/24 GROUND ELEVATION TEST PIT SIZE EXCAVATION CONTRACTOR Wiseland GROUNDWATER LEVELS: EXCAVATION METHOD Trackh/Backhoe AT TIME OF EXCAVATION Dry LOGGED BY TEC CHECKED BY MAB AT END OF EXCAVATION Dry NOTES AFTER EXCAVATION — ATTERBERG l- a o z w o LIMITS w ❑ U X 2 U HW wm �^ w❑ H❑ 5ZJ w D H� H U ❑~ I-Z Z Oo (L w v Q p MATERIAL DESCRIPTION J a� > O� Lu v z a U _ U . ❑ < p Qz w m0 Uz U O }v rr Oz 20 d� �J Q� -j �p z w U tr o ❑ U ° 0.0 ELz ` Sandy Clay with Gravel and Organics (TOPSOIL) Silt Loam, tan and brown. moist. medium dense, weak granular structure (Soil Type 2A) 2,5 5.0 7.5 Bottom of test pit at 8.0 feet. " r Huddleston-Berry Engineering & Testing, LLC TEST PIT NUMBER TP-3 2789 RivcTside Parkway PAGE 1 OF 1 Grand Junction, CO 81501 970-255-8005 CLIENT Dale Bauer PROJECT NAME 611 Scutter Lane PROJECT NUMBER 03122-0001 PROJECT LOCATION Rifle CO DATE STARTED 3119124 COMPLETED 3/19/24 GROUND ELEVATION TEST PIT SIZE EXCAVATION CONTRACTOR Wlseland GROUND WATER LEVELS: EXCAVATION METHOD TrackhlBackhoe AT TIME OF EXCAVATION Dry LOGGED BY TEC CHECKED BY MAB AT END OF EXCAVATION Dry NOTES AFTER EXCAVATION -- Lu o z U } U) W LLI o_ w Q p MATERIAL DESCRIPTION d� m Z) j I-- N pOf 2 Z U Z UO W U 4. p 0.0 Sandy Clay with Organics (TOPSOIL) —' Silt Loam, tan and brown, moist. medium dense, weak granular structure (Soil Type 2A) bottom oT test pit at b.0 Teet. 3� ATTERBERG w o LIMITS z w H �Lu pH UW OUP H �J CA H p rq 20 dJ gZ Lu R LL Huddleston-Berry Engineering & Testing, LLC TEST PIT NUMBER TP-4 2789 Riverside Parkway PAGE 1 OF 1 Grand .function, CO 81501 970-255-8005 CLIENT Dale Bauer PROJECT NAME 611 Scutter Lane PROJECT NUMBER 03122-0001 PROJECT LOCATION Rifle CO DATE STARTED 3/19/24 COMPLETED 3/19/24 GROUND ELEVATION TEST PIT SIZE EXCAVATION CONTRACTOR Wiseland GROUND WATER LEVELS: EXCAVATION METHOD Trackh/Backhoe AT TIME OF EXCAVATION Dry LOGGED BY TEC CHECKED BY MAB AT END OF EXCAVATION dry NOTES AFTER EXCAVATION — ATTERBERG a o z W o LIMITS w U U >- [o oZ d ZOfQwC3(D z 0ap 0" W MATERIAL DESCRIPTIONWm 0x Y ZaU)� mg WU 0 p Ozp � Z m WZ < of 0_ 2O J IL 0.0 ng ILL — Sandy Clay vnth Organics (TOPSOIL) .0 Ir. ". Silt Loam, tan and brown. moist, medium dense, weak granular structure (Soil Type 2A) 2.5 5.0 Bottom of test pit at 6.0 feet.