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Home My WebLink AboutOSSF Design SpecificationsPremier Eilvi1ronmental Designs · Steven Gonzalez, RS 701B Navarro-Drive College Station, Texas 77845 Office: (979} 764-7158 Email: gonza1ez6 l@suddenlink.net OSSF Design Specifications Home/Business Owner: Salem Missionary Baptist Church Site Address: 15215 Royder Road City: Wellborn County: Brazos State: TX Zip: 77881 Subdivision: Lot: Block: Phase: Installer: Undecided Date: 05-30-2012 ,..,.._,,, ........ ,"'' --""'"ic. OF Tt:_ ''' .::-~.;. •••••••••··• -t'..q .... ''" -=-~ .·'* ·· .. ,,. ., ""*.... ·.,itl1 ~*... ... *'I. iJ : ..•••••••••••••••••• : ..... ~ r.•••••••••••• El'· ~.§I.~Y.~~ .. ~:.~9!:J.~~·····~ 'I. -o\ 3781 .:~ ~ ~~-...'I' Q/~; 11 ~·· ••• ~G/STE?;~··· ~ ~ '•-.~ss. ........... #.:-. '\\ 10NA\. ~--''"'""'""._... Stamp Salem Missionary Baptist Church OSSF Site Evaluation Topography Slope: D Flat (Under 27.) [gl Slight (37.-157.) D Moderate 067.-307.) D Severe (Over 307.) Vegetation: [8J Grass/Brush 0 Lightly Wooded Site Drainage: D Poor [8J Adequate D Good D Heavily Wooded D Other Other Topographic Information: Note: Slopes above 30% are considered unsuitable for standard subsurface disposal. If slope is less than 2%, steps shall be taken to ensure there is adequate surface drainage over any subsurface disposal field. Slopes less than 15% are considered acceptable for surface irrigation. Sloped land with greater than 15% slope may be acceptable if it is properly landscaped and terraced to minimize runoff. Any such landscaping shall be addressed in detail in both the design and planning materials. Site Is Located: Flood Plain [8J Outside The 100 Year Flood Plain D Partially Inside The 100 Year Flood Plain D Inside The 100 Year Flood Plain D Inside The 100 Year Flood Plain And Flood way Water Supply 1Z1 Public Water Supply D Community Water Supply If Private Water Supply: D Supplied By A Well D Private Water Supply D Other Means If Well Is On The Property: Distance To Treatment Plant Distance To Disposal Field Wells On Neighboring Property: D Yes [8J No Note: If neighboring wells exist, they must meet setback distance requirements Surface Water On or Near Property: D Stream/Creek D Pond/Lake D River Distance From Treatment Plant: From Disposal Field: Soil Evaluation (Most Restrective Layer/2 Soil Borings At Opposite Ends Of Proposed Dispooal Area) Soil Texture and Classification: Clay -Class N Subsurface Color and Indication: Brown -Good Drainage and Aeration Indication Of Seasonal Ground Water Table: No Note: Any soil profile that has the gray colors (with redox features) indicative of water tables within 24 inches below the proposed trench bottom, or has ground water visible in the test bore hole less than 48 inches below ground surface, shall be deemed unsuitable for standard subsurface disposal. 2 Saltm Missionary Baplist Churd1 Soil Profiles Soil Borin #1 Depth Texture Soil Texture Structure Drainage Restrictive Observations (Feet) Class (Blocky, Platy, or (Redox Features Horizon Mas51ve) or water table) 0 - l lb Lo:imy S:ind Brown 2 -. 111 Cl:iy Loam Blocky Dark Brown 3 --. 4 IV -Clay Orange Mottle; Yes 5 ~- Soil Borln #2 Depth Texture Soil Texture Structure Drainage Restrictive Observations (Feet) Class (Blocky, Platy, or (Redox Features Horizon Massive) or water table) 0 - See Bonng "'l Above l 2 .-' 3 4 I 5~ 3 Salem Missionary Baptist Church OSSF Site Evaluation Summary 'Treatment Disposal D Absorptive Drainfield [8] Lined E-T IX! UnlinedE-T ~ Septic Tank D Pumped Effluent Orn.infield 0 Leaching Chamber D Gravelless Pipe D Low Pressure Dosing 0 Mound D Soil Substitution This Site Is Suitable For r l Septic Tank I Filter I I Orio lrri<rntion L J Absorptive Drainf 1eld [gJ Lined E-T [8] Unlined E-T 1ZJ Secondary Treatment I J Leaching Chamber D Gravelless Pipe (Aerobic) I I Low Pressure Dosing I I Mound [gJ Surface Aoolication 0 Soil Substitution I I Secondorv Treotment I Filler I I Drio Irrigation 4 Salem Missionary Baptist Church OSSF Design Information Site Information Proposed Church Property Size (Acres}. l Number Of Members: ~ 100 Number Of ToiletS: 7 Number Of Handsinks: 8 Number Of Showers: 0 Design Parameters Daily Flow Estimated Water Usage (Gallons/Day): 400 -70 gpd Dosed Qmax. Maximum Water Usage (Gallons/Day): 191 Dosed If Daily Water Usage Exceeds This Amount, Design Will Become Invalid Type Of Plumbing Fixtures: Water Saving Sprayfield Surface Application Rate (Ri): 0.045 Gallons/Square Foot/Day Area Required (Square Feet}. 1,556 Total Designed Area (Square Feet}. 4,240 Plumbing Stub-Out PVC Schedule 40 Minimum 1/8" Fall Per Foot 2-Way Clean Out Between The Sewer Stub Out And The Treatment Tank Clean Out Plug Every 50' Of Pipe Clean Out Plug Within 5' Of 90 Degree Bends Pre-Treatment (Trash) Tank 500 Gallon Concrete Tank Number Of Tanks: l Dosing Tank 750 Gallon Concrete Tank Number Of Tanks: l Treatment Tank 500 gpd Class I Aerobic Treatment Unit (Or Equivalent) Pump Tank Pump 500 Gallon Concrete Tank Number Of Tanks: 1 Timer Activated Pumping System: Yes l/2 hp 4" Submersible Pump (or equivalent) Sprinklers Number Of Sprinklers: 3 Hunter PGP (Or Equivalent) Nozzles Must Be Low Angle 05 Degrees Or Less In Trajectory) Maximum Inlet Pressure For Sprinklers Shall Be 40 Pounds/Square Inch Radius Of Spray (Feet): 30 5 \ Design Parameters Sprinklers Allowable Rotation Setting (See Drawing) 0 360 Degrees Of Rotation 0 270 Degrees Of Rotation ~ 180 Degrees Of Rotation 0 90 Degre~ Of Rotation Minimum Distance Requirements Salem Missionary Baptist Ciiurch From Pre-Treatment, Aeropic, And Pump Tanks To Public Wells . 50 Feet Private Wells 50 Feet Pressure Cemented Wells 50 Feet Water Supply Lines 10 Feet Streams, Ponds, Lakes, Rivers 50 Feet Foundations, Prooerty Lines, Pools 5 Feet From Edge Of Spray Area To Public Wells 150 Feet Private Wells 100 Feet Pressure Cemented Wells 50 Feet Public Water Suoolv Lines 10 Feet Private Water Supply Lines No Separation Distance Streams, Ponds, Lakes, Rivers 50 Feet Foundations No Seoaration Distance Properv Lines 20 Feet W /0 Timer, 10 Feet WI Timer Swimming Pools 25 Feet Sharp Slopes 25 Feet Calculations Minimum Square Footage Of Sprayfield Minimum Surface Application Area= Q/R1=70/0.045 = 1,556 Q =Estimated Daily Water Usage Rate R1 =Surface Application Rate 6 Salem Mis.~ionary Buplist Church Calculations Design Square Footage Of Sprayfield Acircle = :nR1 R = Radius Of The Sprinkler (Feet) Multiply Area By 0.75 For 210· Rotation I 0:5 For 180" Rotation I 0.25 F'or 90' Rotation Total Design Area= A 1 + A2 + •••• + AN-(Overlapping Areas, If Applicable) N =Number of Sprinklers Maximum Daily Flow Rate Qmax = (Atotal)Ri = (4,240X0.045) = 19 l Qmax = Maximum Daily Flow Rate (MUST NOT BE EXCEEDED) Atotal =Total Design Area R1 =Surface Appli~ation Rate Design Notes Landscaping Immediately after completion of the Installation of the system, the homeowner must sod or seed the sprayfield with grass. The owner should keep the grass mowed in the sprayfleld area to allow sunlight to reach the surface. Do not, under any circumstances, grow anything edible for humans or animals in the sprayfield area. Keep tree branches "cut back" and underbrush removed in the sprayfield area to allow the full spray radius. It is the homeowners responsibility to fill in low areas and maintain proper drainage. Sprinkler Heads If the owner or contractor wants to mark the sprinkler head locations, do not place anything near these heads that will interfere with the projection of the water as "pooling" can occur. The installer has some latitude on installation location of the sprinkler heads and supply lines as long as there is no violation of the minimum setback requirements. Effluent Disinfection Tanks Approved disinfection methods shall include chlorination (tablet or liquid), ozonation, or ultra violet radiation. Disinfection shall occur between the treatment tank and the pump tank, or within the pump tank. Dry chlorinators shall use calcium hypochlorite properly labeled for wastewater disinfection. The pump tank will be set to have a reserve of at least 1/3 the daily flow and a minimum dosing of I /2 the daily flow. The effluent pump shall be hardwired on a separate circuit from the high water level alarm and all wiring shall be in accordance with the National Electric Code (1999). The pump tank high water level alarm shall be an audible and a visible alarm. 7 Salem Missionary Baptist Church Design Notes Tanks All precast concrete tanks shall conform to requirements in the Materials and Manufacture Section and the Structural Design Requirements Section of American Society for Testing and Materials (ASTMl Designation: C 1227, Standard Spedifications for Precast Concrete Septic Tanks (2000). If controlled by a Timer, the Timer should be set to spray between midnight and 5:00 a.m. There shall · be at least one day storage between the alarm-on level and the pump-on level, and a storage volume of 1/3 the daily flow betweem the alarm-on level and the inlet to the pump tank. Property Surface Improvements Do not build driveways, sidewalks, storage buildings, porches, decks, or other surface improvements over the tanks or sprayfield. Maintenance The installer will provide service and maintenance to the system for a minumum of two (2) years . after installation completion. Owner should check plumbing on a consistent basis and repair any leaks found promptly. Owner should read and follow the instruction manual for installed system to keep their system in proper work mg order. Owner/occupant of the property should check the vegetation growth around the sprinkler heads. Any growth around the sprinkler head may prevent the projection of treated wastewater. The system must be sampled and tested in accordanc with State/County requirements through a sampling port located in the discharge line from the pump to the sprayfleld, which shall be contained within the pump tank. System is designed in accordance with daily water usage described above. Any usage above the designed daily maximum water usage rate will invalidate this design. Designer is not responsible for the integrity of the installed system, or workmanship of the installer. The designer only guarantees that the design at least meets the minimum standards as required by the state of Texas for a permitted on-site sewage facility. 8 Tank A -500 Gal Cone Pretrearmcnl Tank Tank B -750 Cone Dosing Tank Tank C -500 gpd Class I Aerobic Unil Tank D -500 Oal Corn: Pump Tank and Chlorinator and Timer Exact Location Of Tanks andSprayheads Mey Var; As Long As All Required Setbacks Are Maintained Power Pole And Water Meler Need To Be Relocated .. ! I t t ~ Owner's Name: Salem Missionary Baptist Church City: Wellborn · C0: Brazos Subdivision: Lot: lnstalle1~ Undecided ;; ·c u < O · Pole Pole I .!' ' a Water Meter Proposed Podcing l_····- Site Address: 15215 Royder Road State: TX Zip: 77881 Block: Phase: Total hTigation Area: 4,240 Sq Ft Drawn By: Steven Gonzalez, RS Date: 05-29-2012 Revised: ,\ { ! Pr !t~ ~ln_e_~------' I Proposed Polrl<ing Church -100 Mentbers Q ,.400 go! Proposed Location co R30-------11 I ~ I I I h ~- I I • Dorin~ r.2 , IR3o__/\ I I I ho-_ I IR3o----\ I . I Borin,111 J I .1 ~ 'l 0 ~-~ Royder Rood wl Easement Acres: l Scale: l" = 40' PREMIER ENVIRONMENTAL -==DESIGNS~ 701 8 NAVARRO DRIVE COLLEGE STATION TX 77845 (979) 764-7158 ~ ·c c ~ ·c 0.. f t ~ t j '( t t I -~ I