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20050755 Storm Site Plan 03202012~ ~ ~~LJWL~ ENGINEERING, INCORPORATED ~,QIlU/ `~IPU~~6~/)(~/Zf ~/'~f%7iSY0/7.CI1 ~P~IY/f-I:PwS~ Storm Site Plan Report Windshadow 14920 Berry Valley Drive SE Yelm, Wash~nyton Parcel Na,. 217242-0000,2172424-0200,& 2172424-0300 Pre ared For American West Bank 4 Nickerson Street Suite 200 Seattle, Washinatan 98109 March 20, 2012 BASELINE Job No. 08-104 Prepared by Jerry A. Waldron, p.E ~'~bV~ ~ ~ • i~~ "l ha'eby st:ne tita[ this Storm Drainage Plan for 1ti'indsh;t dow 4as been prepared by me or under ipy supervisio^ and meets the standard of care and expertise vaticli is usual and customary in this community for professional engineer.- I undetscutd that Ci[y of-Yelnt does not and will not assume liability for the salt icicnc}, xurtbn uy. ur psy~4rrnum.c ut .lrainagc facdiues ro . V ,~ered by me. 'i - --...1~ l r_w ~ ~ ' ~' .. I % I I Lantl Planning R Use Engineering .Surveying (970-tiAth Averraa lVesr• Tacoma. Wq 98466 (2531 565-4497 Fax (253) 565-8563 Seattle (20~~q_~~-_--__--_-•--• "The industry starts here" TABLE OF CONTENTS SECTION 1 -PROJECT DESCRIPTION 3 SECTION 2 -EXISTING CONDITIONS 3 SECTION 3 -INFILTRATION RATES AND SOILS REPORTS 4 SECTION 4 -WELLS AND SEPTIC SYSTEMS 4 SECTION 5 -FUEL TANKS 4 SECTION 6 -SUB-BASIN DESCRIPTION 4 SI=CTION 7 -ANALY SIS OF THE 100-YEAR FLOOD 4 SECTION 8-AESTHETIC CONSIDERATIONS FOR FACILITIES 4 SECTION 9 -FACILITY SIZING AND DOWNSTREAM ANALYSIS 5 Water Quality Flow Control 6 Conveyance 5 7 SECTION 10 -OTHER PERMITS OR CONDITIONS PLACED ON THIS PROJECT 7 APPENDICES Appendix A- Vicinity Map, Site Map, Soil Description, and FEMA Maps Appendix B -Drainage Calculations and Basin Map SECTION 1 -PROJECT DESCRIPTION The project proposal is to subdivide Parcels 217242-0000, 2172424-0200, & 2172424-0300 into 217 residential units composed of single-family residences and townhomes. The project site is composed of Soil Type A -Gravelly Sandy Loam and the storm design will utilize underground Low Impact ' Design BMPs to discharge all runoff generated from the development into the native permeable soils. There is a residential single-family home on-site, which will serve as a wnstruction office and will be removed from the site prior to recording of the plat. A public sheet connected to Tahoma Boulevard to ' Berry Valley Road. The site is zoned Low Density Residential R-4. The 30.2-acre site is located at 14848 SE Berry Valley Rd in Yelm, WA. The subject property is located in ' sewe S.T.E.Prsystemt~ watermai1n~, storm drainageRand extend drynutiltities from Tahoma Boulevaord. See the site map in Appendix A. The project improvements consist of subdividing the parcels into 175 lots for single-family residences, 10 open spaceJstorm tract areas, 56-foot right of way dedication for the public road improvements and access to the residences, and 20' wide alley way. All interior streets shall be improved to Yelm City Standards for ' a Local Access Residential, including a 35-foot paved roadway with two 7.5-foot parking lanes, rolled curb and gutter, and a 5-foot concrete sidewalk on one side. SECTION 2 -EXISTING CONDITIONS The site is composed of two Predeveloped drainage basins where the middle portion of the site is a kxal t depression at elevation 330. Predeveloped Basin 'A' is the northern half of the project site which sopes to the south at grades that range from less than 1 % to 12%. Predeveloped Basin 'B' is the southern half of the project site which slopes to the north at grades that range from less than 1 % to 5%. The existing ' residence and detached barn are located near the southwest portion of the site and will be removed. All storm runoff remains onsite and infiltrates into the existing soils. ' Parcel Nos.l27 24240201 an'd 21724240202. Peak Flows we ©rgenerated utitiz ng theeWHHM3tcontinuous storm model. _ _ Table 1 -Existing Conditions Basin IDS Basin Pervious Impervious l Desertion Acres ~acresL PreDev-A Pasture & 15.214 Lawn _ PreDev-8 House & 14.736 ~ 0.250 L Lawn _~ i -Table 2 -Historic Forested Condition for WHHM3 Predeveloped I~ut Basin ID i Basin T Pervious Im -- _ __ Descri lion ~ Pervious 100-year. ~ ~-I- Acres acres) Peak rate _~ PreDev-A Pasture 8 15.214 __ _ Lawn 1 - 0.008 cfs PreDev-B House & ~ 14.988 Lawn 0.008 cfs 1 SECTION 3 -INFILTRATION RATES AND SOILS REPORTS t Based on Soil Conservation Service (SCSj of Thurston County the soils have been identified as Nisqually loamy fine sand and Spanaway Gravelly, Sandy, Loam which is a Hydrological Soil Group A. The ' contractor will need to perform soil logs and infiltration tests at each proposed storm drainage infiltration gallery m order to verify that the infiltration rates greater than 20 in/hr (3 minlin) .The soil infiltration tests shall be performed at least 3-feet below the proposed infiltration facility, see soil description in Appendix A, ' SECTION 4 -WELLS AND SEPTIC SYSTEMS ' There is an existing well on-site that currently serves the residences to the west, Parcel Nos. 21724240201 and 2 1 72424 0202. The project proposes to relocate the service line from the well such that the service line runs within the right-of-way and the 12' utility tract located between Lots 40 & 41. The existing onsite water ' well will continue to serve the residences to the west and no building structures will be permitted to be constructed within the 100' protective well radius. There existing residence is served by a septic drainfield and proposes to be abandoned in accordance with the Department of Ecology (DOE) standards. 1 SECTION 5 -FUEL TANKS There are no known fuel tanks located on the site. ' SECTION 6 -SUB-BASIN DESCRIPTION toem rulnoffPromothe development s collecPed aDndsconveyed to angunder'grorund wrateaqual ty sand filter and infiltration gallery. The water treatment and retention facilities will be situated in the dedicated storm tracts throughout the site. The individual homes will each have a roof downspout infiltration system on its ' respective lot. Offsite storm runoff will not enter the site due to the high permeability of the soils and perimeter open space tracts along the northern and eastern property lines. All stormwaler will be retained on-site and disposed of through infiltration. 1 SECTION 7 -ANALYSIS OF THE 100-YEAR FLOOD The project site is not located within the 100-year Flood plain. See Appendix A for the FEMA Firm Map. ' SECTION 8 -AESTHETIC CONSIDERATIONS FOR FACILITIES Facilities will be located underground within dedicated storm tracts and will not detract from site aesthetics. ' Since the facilities are underground more open space will be provided for the development than as shown on the preliminary plat. 1 4 ' SECTION 9 -FACILITY SIZING AND DOWNSTREAM ANALYSIS ' For the proposed 175-lot subdivision water quality, as well as stream bank erosion control (SBEC), will be designed and constructed for long-term disposal of the stormwater runoff. Department of Ecology's WHHM3 continuous storm model was used to size the water quality and infiltration facilities for all six storm ' tracts, see Appendix 8 for calculations. The site is graded to flow stomiwater toward fhe road and into catch basins that will convey the stormwater to the water treatment and quantity facilities to the nearest storm water tract throughout the site. Each lot will also contain an individual roof downspout infiltration ' trench that is designed for 2,500 sf of roof area and will retain the 100-year storm event. Soil logs and infiltration tests will be performed at depths 3-feet below the bottom of the infiltration trench and for the purposes of this report a design infiltration rate of 20 inches/hr (3 min/in}will be inputted to the design of ' the infiltration galleries and then a 200% factor of safety will be applied to the required infiltration trench bottom area. Spit logs and infiltration tests will be performed at depths 3-feet below the bottom of the water quality sand filter and sand will be imported with a maximum infiltration rate of 2 inches/hr (30 min/in) and then a 125% factor of safety will be applied to the required sand filter bottom area. ' Flow Control All storm runoff generated from the roads, sidewalks. driveways, and landscaping will be conveyed to an infiltration gallery. Upstream o(the infiltration gallery an oil/water separator Tee with a mesh screen will be installed to control the amount of sediment entering the infiltration gallery. All of the proposed roofs will discharge and percolate into the existing soil where each residential unit Is assumed to have a butt ' envelope of 2.500 square feet. dmg ' Table 3 -Developed Conditions (Acres) (Acres) 37' Road+ 5' SW (Acres) (Acres) Roof Driveways Roads (Acres) Basin tD _ Cots Acrea a Pervious NPGIS PGIS __9 - ---- ---- PGIS Basin A 2 0.642 0.308 0.115 0.007 0.212 ' Basin B 23 4.507 2.099 1.320 0.079 1.009 Basin C 39 6.960 3.352 2.238 0.134 ' 1.235 Basin D 6 2.500 1.916 0.344 0.027 0.219 Basin E 45 7.362 3.583 2.583 ' 0.155 1.047 Basin F 60 8.229_ 2.873 3.444_ - 0_207 1.706 30.200 14.132 10.044 0,603 5 422 - - 1 '1 1 1 Table 4 -Developed Conditions WHHM3 Input (Acres) (Acres) 3T Road+ 5' SW 44'HNbl3 (Acres) (Acres) Roof Driveways Roads (goes) 100-yr _ Basin ID Lots_ Acreage Pervious NPGIS" PGIS Flows Basin A 2 0.642 0.423 -- -- - PGfg cfs Basin B 2g 0.007 0.212 0.10 4.507 3.419 0.079 1-009 Basin C 39 6.960 5.591 0.56 Basin D 6 2.500 2280 - 0.134 1.235 0.74 Basin E 45 - 0.021 0.219 0.19 7.362 6.166 0.155 1.041 Basin F 60 _8.229- 6.376 0.71 - 0.207 1.706 0.85 'Roof Downspout Areas that pepr o~ate into native soil maybe mode ed as lawn 5.422 Table 5 -Infiltration Galleries _ r------ ---- _ _ Basin ID/Tract I Infiltration Rate ~ Depth I Infiltration Galle A I ~_~ rY I PP Y Overflow Factor A/Tract F ~20 in/hr 3 mm/in I - Area of Safety = 2 ~B/Tract E ~- -Z 5 ft 10'x5' = 50 sf~ 100 sf = 20'Lx5'Wx5'D _ ~ 20 in/hr (3 min/in 5 ft ~ 40'x5' = 200 sf 400 sf = r~ ClTract B _ 20 in/hr 3 min/in 40'Lx10'Wx~ D - - -~ -..-~ 5 ft 50'x5' = 250 sf ~ `- - D/Tract G ~20 in/hr 3 mrn/in I 500 sf ~ 50'Lx10'Wx5'D _ _ l`"~ - - - ------- - _~ ~ 5 ft 10'x5' = 50 sf ~ 10U sf = 20'Lx5'Wx5'D ~/Tract C1 ~20 in%hr S3 min/i~~5 R ~ 45'x5' = 225 sf 450 sf = 45'x10'Wx5~ /Tract C2 20 in/hr 3 minln --~ - ----.~_. (-~ 5 ft 70'x5' = 350 s( 700 sfL70'x10'Wx5'D L __Roof ~ 20 in/hr 3 min/in ~~ ~-- - - _ - -i- - ~ ,? ft 10'x2' = 20 sf ~40 sf = 20'x2'Wx2'D I Water Quality Water treatment for the project will be provided by a sand filter to remove sediments (TSS), infiltrate at least 91% of the 2-year storm event, and free oil (TPH) from sformwater runoff before entering an infiltration gallery. All storm runoff generated from the roads, sidewalks, driveways, and landscaping will be conveyed to art irtfrttratrort Battery. Upstream of the sand fitter an oil/water separator Tee with a mesh screen will be installed to control the amount of sediment entering the facility. Downstream of the sand filter an Villwater separator Tee will be installed to encourage the maximum amount of infiltration within the 12" under drain prior to discharging to the infiltration gallery. Flows generated from roots will enter individual roof downspout infiltration trenches and will not require water quality because of the non-pollution generating surfaces of the roofs. Table 6 -Water Quality Sand Filte_r_s_ _ Basin ID Infiltration Rate TD~pth ~Vllater Qualit _ Y I Apply Factor of Safety = ~AlTract F_ 2 in/hr (30 min/in ~ ~- Area _ _ _ 1 25 v ft 20'x5' = 100 st ~ 125 sf = 25'Lx5'Wx5'D ~B/Tract E 2 mIh~30 min/in ~ S ft~110'x5' = 550 sf 688 sf = 69'Lx10'Wx5'D C/Tract B I 2 in/hr (30 min/i~~ry 30'x5' = 650 s? 813 sf = 82'Lx10'Wx5'D ~ D/Tract G ~ 2 in/hr~30_min/in 5 ft 25'x5' = 125 sf 157 sF = 32'Lx5'Wx5'D E/Tract C1 ~ 2 in/hr 30 min/i~~ 5 ftft 120'x5' = 600 s~ 750 sf = 75'Lx10'Wx5'D fi/Tract C2~ 2_in/hr ~0 min/in _5•x5' = 950 sF 1188 sf = 119'Lx10'Wx5'D ~ 1 Convevance The conveyance designed is based on the 100-year, 24~hour storm using flows calculated from the Santa ' Barbara Unit Hydrograph Method (SBUH) and Waterworks 6.1.3.5 as shown in Calculations in Appendix B. The runoff from the roadway and driveways will be collected using concrete rolled curb and gutter, catch basins, and storm pipe. Storm drainage from the public roadways will be conveyed to the water quality ' sand filter to remove total suspended solids (TSS), infiltrate at least 91 % of the 2-year storm event, and free oil (TPH) from the stormwater before entering the infiltration galleries. Due to the Low Impact Design the lengths of conveyance pipe is minimized to discharge to the nearest storm tract where the maximum ' Pipe size required is only 12" in diameter to convey the 100-year storm. A backwater analysis was not Performed since due to the City of Yelm cover criteria For the proposed wafer main and sewer S. T. E.P. system the depth of the storm system is approximately 7' deep and all 12" storm pipes have the capacity to drain the 100-year, 24-hour storm event for all drainage basrns. ' Downstream Analysis downstream analys s was deemed urnnecessarry s ntce aoll stormwat e s~o bea etalned on-site A ' SECTION 10 -OTHER PERMITS OR CONDITIONS PLACED ON THIS PROJECT An NPDES permit and site development permit will be required. No other permits are anticipated for this Project as it is not affecting any existing wetlands and does not discharge into a surface water body. A 10- foot setback from all property lines and easement are required for stormwater facilities. Sewer will be provided by the City of Yelm through a S.T.E.P. system and will not interfere with Storm Drainage ' Facilities. The existing onsite water well will continue to serve the residences to the west and no building structures will be permitted to be constructed within the 10D' protective well radius. r i i VICINITY MAP, SITE PLAN, SOIL D SCRIPTION, AND FEMA MAP VICINfTY MAP NTS _ _ _ _ m~ ~s9rz~w~~~ooa~v~~'oa i~e •a,•~mnna~~~-~o'~bor~sour~ i NO.1'JNIFIStlM Nf131. d0 /.11'J 9s.BE rx 'ou>o, w. mwr ano-oie. issr: is'r.a. y.» uu~ryy-~~,~~~~7~~ryy~7~~~~~~~~ au~AYlrY a+4..,.10.-] NA ~ OYIW.O1. 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Washington 08104-YNnd/sherfae 1 1 ' ~ Natural Resources Web Soll SurvoY 11f9/2009 Consarvatbn Servlco National Cooperative Soll Survey page 3 of 3 I~ Map Unit Legend 08104-1','indshadow Soil Description Thurston County, Washington 74-Nisqually loamy fine sand, 3 to 15 percent slopes Map Unit Setting Mean annual precipitation ~ 40 to 60 inches • Mean annua! air temperature: 50 degrees F • Frost-free period: 150 to 200 days Map Unit Composition • Nisqually and similar soils: 85 percent • Minor components: 5 percent Description of Nisqually Setting • Landform: Terraces • Parent material: Sandy glacial outwash Properties and qualities • Slope: 3 to 15 percent • Depth to restrictive feature: More than 80 inches • Drainage class: Somewhat excessively drained • Capacity of the most limiting layer to transmit water (Ksaf): High (1.98 to 5.95 in/hr) • Depth to water table: More than 80 inches • Frequency of flooding: None • Frequency of ponding: None Available water capacity: Low (about 4.9 inches) Interpretive groups Land capability (nonirrigated): 3e Typical profile • 0 to S inches: loamy fine sand 5 to 31 inches: Loamy fine sand • 31 to 60 inches: Loamy sand Minor Components Yelm Pen~nt ofmap unit.• 3 percent Q8104-Windshadow Soil Description Norma Percent of map unit: 2 percent Landform: Depressions 08104-Windshadow Soil Description Thurston County, Washington 110-Spanaway gravelly sandy loam, 0 to 3 percent slopes Map Unit Setting • Mean annual precipitation: 35 to 65 inches • ^,+~~n a.onua/air temperature: 50 degrees F Map Unit Composition • Spanaway and similar soils: 100 percent Description of Spanaway Setting • Landform; Terraces, outwash plains Parent material: Volcanic ash over gravelly outwash Properties and qualities • Slope: 0 Co 3 percent • Depth to restrictive feature: More than 80 inches • Drainage class: Somewhat excessively drained • Capacity of the most limiting layer to transmit water (Ksat): High (1.98 to 5.95 in/hr) • Depth to water table: More than 80 inches • Frequency of flooding: None • Frequency of ponding: None • Available water capacity: Low (about 3.8 inches) Interpretive groups • Land capability classification (irrigated): 3s • Land capability (nonirrigated): 3s Typical profile • 0 to IS inches: Gravelly sandy loam • 25 to 20 inches: Very gravelly loam 20 to 60 inches: Extremely gravelly sand 08104-w'[ndshadow Soil Dcsc;ription Thurston County, Washington 112-Spanaway stony sandy loam, 0 to 3 percent slopes Map Unit Setting Mean annual precipitation: 35 to 65 inches • Mean annual air temperature: 50 degrees F Map Unit Composition • Spanaway and similar soils: 100 percent Description o/ Spanaway Setting • Landform: Terraces, outwash plains • Parent material.• Volcanic ash over gravelly outwash Properties and qualities • Slope: 0 to 3 percent • Oepth to restrictive feature: More Chan 80 Inches • Drainage class: Somewhat excessively drained • Capacity of the most limiting layer to transmit water (Ksat): High (1.98 to 5.95 in/hr) • Depth to water table: More than 80 inches Frequency of flooding: None • Frequency of ponding: None Available water capacity: Low (about 4.0 inches) Interpretive groups • Land capability (nonirrryated): 4s Typical profile • U to l6 inches: Stony sandy loam • 16 to 22 inches: Very gravelly sandy loam • 22 to 60 Inches: Extremely gravelly sand 08104-Windshadow Soil Description Thurston County, Washington 113-Spanaway stony sandy loam, 3 to 15 percent slopes Map Unit Setting • Mean annual precipitation: 35 to 65 inches • Mean annual air temperature: 50 degrees F Map Unit Composition • Spanaway and similar soils: 100 percent Description of Spanaway Setting • Landform: Terraces, outwash plains Parent materral: Volcanic ash over gravelly outwash Properties and qualities • Slope: 3 to 15 percent • Depth to restrictive feature: More than 80 inches • Drainage class: Somewhat excessively drained • Capacity of the most limiting layer to transmit water (Ksat): High (1.98 to 5.95 in/hr) • Depth to water table: More than 80 inches • Frequency of flooding: None Frequency of ponding: None • Available water capacity: Low (about a.0 inches) Interpretive groups Land capability (nonirrigated): 4s Typical profile • 0 to t6 inches: Stony sandy loam • 16 to 22 inches: Very gravelly sandy loam • 27. to 60 inches: Extremely gravelly sand ~ F W W y o p W ~ Q n r < p f O `~ c Q S 6 ! m O 6 v < ~ o ° 9 ~ >< ` L~ - ~ t 6'' W C.t ~ ~ = ~ C ~ ~L~ ~-~ ~ G p O UxF 2E~ O m o E.~~ (r, W u i d~ Z F~p _ _ ~ ` d u °• m• o° ~o ^ ~~ W f p~,C _ U Vf ~~ ~ Z o yJj OD Z~ dsa ~w '~ i ° V ~ m O! °~ }~ ~W cam WW Wca ° - t ~ v ~ y CU R 7 F c ~ ~, '~ ` r -~ e tY~ "$~~ P < 11 O, ES~~C ~_+2 ~ ~ F S 90O y Lfi~n o i o qxqx ~":n ~6b o_n° Yn.. ~ ~~~nh Y~ t ~ 4 ae~~' 6-i~p~LL ~c L FOr Y= L~~a~ s§~o~ q¢ E ~Lbu~ a~~E ~Dm'~u ~iop ~_ =n u • I , r0 Ow ~ i,e a o E Zo VALIEV RD ~ N ~\ ~ I ' o ae orw~ >'~ ~ _' o \ O ~ cz } I w m is LO ~N ., ~~~ I ,, \\ I • p i e \\ I _ a ---- --- - --- -- '~-- ~ ti o • ° ~ ~,i 9 ~~ o C 11 T yI l C G " I w a y~ ~~ Q w ~ ~ p age ~ ~~~ ~' W Z fV (•7 F s ° Vi li I ~ ~ 0 2 . ~ ° ` ~) I N ; $ // w ~ U ° C ~ Z 0 ~ Q g o a ~ I N ( 1 ~ m ~~ I . ~ n ~ c~ y ° ~~ IN o Q, W o ( C ` Z ~ {~ o ~ • w q . to Z ` Z - APPENDIX B - DRAINAGE CALCULATIONS AND BASIN MAPS NO1tlJNIH3VM W(~A vi0 J.l1J Ys.YC br bwae .'~• M •^+••r WbY-9161 Tim' 7L`~7wJL ~yY~ ~^~-Y~ ~-~ OurL•~~ OuuwiOu) ••r Y lu~wv~Y ouvr ~ ~uvti BO186'VM •3ZLLV38~~ cqs- urv ova wf(cc[! rv: • mn reMVOn •n•n • sn-of(cc[: ~ OOt 311l1S '133iIS NO&l3N~M b gyp('-vu9tYV c E Y $ Y''' ~ • Nolll~P70'J a3dOl3/L3Q3Hd -~`•Ywv ~~ v HNVB rJNI~A '~NI ''JNI2133NI~N3 ~~~~~UQ ~--oL~+v ~niu ~a~am~n~ala~wxo w•Y M •Y I •Ib •N reQ ~ ~~ o a ~ ~ ~~ ~ R 's ~ -- t 9s cY rc;z.~;. ~ Y fYYPI R ,~ E gym. g ,f^N N ~~ ~ W i09:Vb YM ~ fi 9tl >YfO ~ A. Y. U )y q s _~ a ~ ~ nl K PYbi M J fi~9 ~4 y 3 u t•w N N V N N N r ~ ~ i C~ - sae ~ _ 3 ~~ ~ ~ ~ n 9b aY x.ianY RTQ ~ ~ ~ s~, S ~ 8 q _ N ~ ~ ~~ ~ S: •'J~yJ~I N~ a F NN N N 0 'Y/UO`~~' u < G U N i a 7 '. c `a K_ W w c5 ~ ~~ U: ~ ~~d ~~~ x~ i WN ~ • QU i Q • o _ ~~ . ~N •\ : • ~ ~ • II II ~ VI Q 7 • g~ ~ Z~ v 9 ~ i ma ~•., ~ ~- ~® ~t 6 1. II ~ ~Cq i. ~~ ~. Yv g 0 }~ 4 ~. O L i-v- II .- 9 ~ ..~~ t. i . II j II CD~ ~ ~ ; L 2 ~ Q W __ 0] ~ ~ --~ a ~6 ~~s. I S I 1i a `. I ' -`-I Iti, ~ f I~ .t , ~ ~ ~ ~ _ aN~r[sr~wo0~'bve~~sz:o~are~o~e--~ssitelwr~ecoz'~ I 0810$-Windshadox Western Washington Hydrology Model PR0.7ECT REPORT Pre-Developed Basin A Project Name: Pre Cev-A Site Address: 19920 SE Berry va.ley Rd City '18!m Report Date 8/]//'LOT'. Gage Olympia Data Start 19~i5/10/C1 Data End 1399/09/30 Precip Scale: 0.80 WWHM3 Version: PREDEVELOPED LAND USE Name 8asi~ 1 Bypass: No Groundwater: N::~ Pervious Land Ose Acres A B, Forest, Flat 15,214 Impervious Land Ose Acres Element Flows To: Surface Interflow DfZ i IGr1TED LANTJ USE Groundwater ANALYSIS RESULTS Flow Frequency Return Periods foX predeveloped. POC #1 Return Period Flow(cfs) 2 year O.C03..4 5 year O.C:?;78r ZO year C. C~~.'.~1 ::F 25 year i;. aC,~ii35S 50 year i0?395 100 year U.OCo4C3 08105-Windshadow Western Washington Rydrology Model PROJECT REPORT Developed Basin B Project Name: Pre Dev-B Site Address: 19920 SE Berry Valley Rd City Yelai Report Date 8/17/2011 Gage Olymo:a Data Start '_955/:0/01 Data End =999/C9/30 Precip Scale: C.BC WWBri3 Version: PREDEVELOPED LAND IISE Name 3a:; i r. -. Bypass: So Grovndwater: No Pervious Land Uae Acres A B, Forest, Flat 19.986 Impervious Land Use Acres Element Floas To: Surface Interflow Groundwater MITIGATED LAND USE ANALYSIS RESULTS Flow Frequency Return Periods for Predeveloped. POC #1 Return Period Flow(cfs) 2 year G.OC~Ofi8 5 year C.CC9~22 10 year C.CC~C78 25 year .~ . 00626E 50 year 7.G0?236 100 year C'r,CGE2?? s T` om rv t MOQHHSQI~IIM NOttrblW~ Q3d0~323Q BO188'dM '3ZL1V35 OOZ 3L(15 '1.33kl1S NOSkl3~I~IN tr 3Stl8 rvIN NM/6' 'Ji4Ya'iA Y QN N VfI N N (y ~3 Sy ~ 3, 4 Q Q Q D O 1 V1 VI VI V: N 4 { , ~¢ K 4 4 K t V S ~ ~ _ O = P ~ ` n. o .~i u. N N j~N~j~~VV N VI K K K rt~ r ;: ~ a O N r ~n n '!~ N Y Y Y Y Y Y G1 V < < N a Y 3n~_~-o i O - 'J S 1:F ~ 'c _ o o d o v O 5 ~ ~ G Q < -i _ a ~ c m c -i y `' ~ N ~ € g s ~ ~ "~ ~ ~ 003003 3 ¢ z z z ¢ ~ H b Y pp p p p ~ 0 4 0 0< ~ N P U 1 Y K Y Y Y~ Y. ~ 111 (~ W 1 ~ z ~ s .1 C ~ .l S C ~/ •l .~ ~ yl 6 2 O Q /2 VJ 2Z 9MB9 9M 'eueael •'vuM vmwv 409-0181 '9M61S'$r 9ulAw~rvj 9u{.ru19u~ vv~ Z 9 Wuvgd Wvl Yl~~ sa C9S-G9g11•L: n: • S1~-s[B(9K ws ) • .6vv-.9G(SL:' _ ~J ~_ ~ '~NI •`JNItl33N19N3 ~u~ti' ~~~J ~_~ t J1 N N V. V! N a s a a a a N ~ < 5 Q . ,. o M, m V IV1 W N N Vf y1 ~yy/~~Y p ~ ~ P3 ~ ~ g q :~ fR~ < p p y ~ ^ o N ~ O ^7 l•1 l b ~ c L 4 N :I~ N ~• V 411 V ~ J S ~ O Q ~ °o , r. o _ _ o _ < N 4'1, N V: V'. T ~ 5 ~ < a ~ 1 O u ?$ Ul 5 G ~ ~ 1(/,1~~ O O ~ V ~ N F41 C C O O O O a a ~ ~ s _ ~ rN v, nn ~n ut ~ S 1 1 ~ Q ~1 1~ p !'~ rv ~i^u ~i b i N ~ ~ ~ ~ C N Vi N /i VS LIS a ~s ¢ i s ¢ ~s~s as v z z v¢ s 9~ a a u a ~.. ~. 1b , W YY~ Q~ S 74L~E~'t~~'~bb'6~OZiL~'~~'1J9I~1WI~BCDC~ 08104-windehadow western waehington Hydrology Model PROJECT REPORT Begin A - infiltration Gallery Pzoject Name: Basin A Site Addre sa: 14920 SE Berry Valley Rd City Yelm Report Date 7/28/2011 Gage Olympia Data Start 1955/10/01 Data End 1999/09/30 Precip Scale: 0.80 wwSDJ3 version: PRSDSVSLOPED LAND OBE Name Basin 1 Bypass: No Groundwater: No Pervious Land Ube Aczes A B, Poree[, Flat .642 ImDerViO11H LdIId Dae ACreB ANALYSIS RSBIILTB Plow Prequency Return Periods for Predeveloped. POC pl Return Period Flow(cfe) 2 year 0.000131 5 year 0.000181 10 year 0.000218 25 year 0.000269 50 year 0.00031 100 year 0.000355 08104-wlndahadow western washingtoa Hydrology Model PROJECT REPORT Developed Basin A - Zafiltra tfoa Gallery Project Name: basin A Site Addreea: 1.4920 S6: Berry Valley Rd City Yelm Report Date : 7/28/2011 bags Olympia Data Start 1955/10/01 Data End 1999/09/30 Pzecip Scale: 0.80 WWB4I3 Version: $lement Flows To: Surface Saterflow Name Haain 1 Bypass: No Groundwater: No Pe=vi_o_ue Land IIae Acres A 8, Lawa, Flat .423 Impervious Land Qae A_c_ree ROADS FLAT 0.219 ANALYSIS RSSVLTS Flow Frequency Return Periods for Developed Flow Frequency Flow(CPS) 0?D1 2 Year = 0.0558 5 Year ~ 0.0690 10 Year = 0.0775 25 Year 0.0879 50 Year ~ 0.0956 100 Year = 0.1033 Flow Frequency Return Periods for DSi tigated. POC #1 Return Period Plow(cfa) 2 year 0.031348 S year 0.046243 30 year 0.055663 25 year 0.066953 50 year 0.074913 100 year 0.082.501 08104-Windahadow Western Wasb,ingtan Hydrology Model PROJECT RBPORT Developed Saein A - Infiltration Gallery Project Name: Basin A Site Address: Ia920 SE Berry Valley Rd City Yelm Report Date 7/28/2011 Gage Olympia Data Start 1955/10/01 Data Snd 1999/09/30 Precip Scale: 0.80 WWHN3 Veraioa: Slemeat Flown To: Surface Interflow Groundwater Gravel Trench Aed 1, Gravel Trend R::~d !, Name Gravel Trench Bed 1 Bottom Length: loft. Bottom Nidth Sft. Trench bottom elope 1: 0.01 To 1 Trench Left aide elope 0: 0 To 1 Trench right aide elope 2: 0 To 1 Material thickness of first layer 5 Pour Space of material for first layer 0.33 Material thickness oP second layer 0 Pour Space of material for second layer 0 Material thickness of third layer C Pour Space of material for third layer 0 Iaf iltratioa Oa infiltration rate 20 Infiltration saftey factor 1. Dacha_rge Structure Riser Height: 2.5 ft. Riser Diameter: 12 in. NotehType Rectangular Notch Width 0.000 ft. Notch Haight: 0.000 ft. Outlet 1 Outlet 2 Outlet 3Outlet 3 -I swnstream Connection 0 0 cifrty7yrie GsavetTrench/Bed PrecyitdionAppLedtoFacily puit:.kTrench lily BaNom Elevntian (fl) lily Dimensions hLength TO Outlet SUUCture hBottomWidlh ~ Riser Heigh(fq 2.5 ne Tolal0eplh 5 Rises Diameter(ini 12 J n slope d Trench j.~ Riser Type Nached de Slope Ndch Type RectangJar -=-i fide Skye 0 ~ Ndch Heghl Qli Notch Width (fl) ~ J Irinl Layers for 1 Thrdcnessllq ~ ~ Orifice DiameterNeigM OMt»c 1 porosity 1J[3.~ Number (In) (Ft) (ds) 2 Thickness (itJ 0 1 ~U ={ ~0 --- -~ 0 2 porosity ~p 2 ~ _i ~ , ;~ ~ 3 Thickness BtJ 3 ~- ~ ~ ~ 0 3 porosity 0 rt]flon yEg _-I Trench Vduma d Riser Head (acre-fti .001 red InfiNration Rate (aJhr) 20 .~ Pond Increment 0.10 son Redsclion Factor ~:..I Show Pond Tnble Open Table { 'etled Surleco Area (sidewaNs) NO 'okmelnfilhated[acre-fry 25.727 TdalVoksr~eThoughfaciiity(acradtJ G-'x.691 'olune Though Riser(acre•NI 1.167 Percent Infiltrated 95.66 i Gravel Treach Bed Bydraulic Tahle 1 Staae(Lt) AieaSacr) Vol ~e(ecz-RI Oa cArg (cf o) Inf ilt(c Lel. 100.0 0.001 0.000 O.G00 0.000 100.1 0.001 0.000 0.000 0.023 100.1 100.2 0.001 0.001 0.000 0.000 0.000 0.000 0.023 0.023 100.2 0.001 0.000 0.000 0.023 100.3 0.001 0.000 0.000 0.023 ' 100.3 0.001 0.000 0.000 0.023 100.4 0.001 0.000 0.000 0.023 100.4 0.001 0.000 0.000 0.023 100.5 0.001 0.000 0.000 0.023 ' 100.6 0.001 0.000 0.000 0.023 100.6 0.001 0.000 0.000 0.023 100.7 0.001 0.000 0.000 0.023 100.7 0.001 0.000 0.000 0.023 100.8 0.001 0.000 0.000 0.023 100.8 O.OC1 0.000 0.000 0.023 100.9 0.001 0.000 0.000 0.023 100.9 0.001 C.000 0.000 0.02'3 101.0 0.001 0.000 0.000 0.023 101.1 0.001 0,000 0.000 0.023 101.1 0.001 0.000 0.000 0.023 101.2 0.001 0.000 0.000 0.023 101.2 0.001 0.000 0.000 0.023 1.01.3 0.001 0.000 0.000 0.023 t 101.3 0.001 0.001 0.000 0.023 101.9 0.001 0.001 0.000 0.023 101.4 0.001 0.001 0.000 0.023 101.5 101.6 0.001 0.001 0.001 0.001 0.000 0.000 0.023 0.023 101.6 0.001 0.001 0.000 0.023 101.7 0.001 0.001 0.000 0.023 ' 101.7 0.001 0.001 0.000 0.023 101.8 0.001 0.001 0.000 0.023 101.8 0.001 G.001 0.000 0.023 102.9 0.001 0.007 0.000 0.023 1 101.9 0.001 0.001 0.000 C.023 102.0 0.00] O.U07 0.000 0,02.3 102.1 0.001 0.001 0.000 0.023 102.1 0.001 0.001 0.000 O.U23 ' 10?..2 0.001 0.001 0.000 0.023 102.2 0.001 0.001 0.000 0.023 102.3 0.001 0.001 0.000 0.023 102.3 0.001 0.001 0.000 0.023 102.4 0.001 0.001 0.000 0.023 102.4 0.001 0.001 0.000 0.023 102.6 0.001 0.001 0.000 0.023 102.6 o.oal o.ool o.l2e o.023 102.6 0.001 0.001 0.361 0.023 102.7 0.001 0.001 0.663 0.023 102.'7 O.U01 0.001 1.020 0.023 102.8 0.001 0.001 1.426 0.023 10?..8 0.001 0.001 1.874 0.023 ~ 102.9 0.001 0.001 2.362 0.023 102.9 0.001 O. ODI 2. 396 O.D23 103.0 0.001 0.001 3. 443 0.023 103.1 0.001 O.OD1 4. 033 0.023 103.1 0.001 0.001 9. 653 0.023 103.2 0.001 0.001 5. 301 0.023 103.2 0.001 0.001 5. 978 0.023 ]03.3 0.001 0.001 6. 680 0.023 103.3 0.001 O.OG1 7. 409 0.023 103.4 0.001 0.001 8. 162 0.023 103.4 0.001 0.001 8. 939 0.023 103.5 0.001 0.001 9. 739 0.023 103.6 0.001 0.001 10 .56 0.07.3 103.6 D.DO1 0.001 11 .41 0.023 103.7 0.001 0.001 12 .27 0.023 103.7 0.001 0.001 13 .16 0.023 103.8 0.001 0.001 14 .07 0.023 103.8 0.001 0.001 14 .99 0.023 103.9 0.001 0.001 15 .94 0.023 103.9 0.001 0.002 16 .91 0.023 109.0 0.001 0.002 17 .69 0.023 109.1 0.001 0.002 16 .84 0.023 104.1 0.001 b.002 19 .92 0.023 109.2 0.001 0.002 20 .95 0.023 104.2 0.001 0.002 22 .01 0.023 104..3 0.001 0.002 23 .09 0.023 104.3 O. OD2 D.DD2 24 .18 O.D23 104.4 0.001 O.U02 25 .26 0.023 104.4 0.001 0.002 26 .41 0.023 104.5 0.001 0.002 27 .55 0.023 104.6 0.001 0.002 28 .70 0.023 104.6 0.001 0.002 29 .87 0.023 104.7 0.001 0.002 31 .06 0.023 104.7 0.001 0.002 32 .26 0.023 104.8 O.OU1 0.002 33 .48 0.023 104.8 0.001 0.002 39 .71 0.023 104.9 0.001 0.002 35 .96 0.023 104.9 0.001 0.002 37 .22 0.023 105.0 0.001 0.002 38 .50 0.023 08204-Windshadoi. Western Washington Hydrology Model PROJECT REPORT Basin B - Zaf filtration Gallery Project Name: 3a~in 8 Site Address: 14920 SE Berry Valley Rd City Report Date Gage Data Start Data End Precip Scale: WWHM3 Version Yelm 7/28/2011 Olympia 1955/10/01 1999/09/30 0.80 N8111e Ba81a 1 Bypass: No Groundwater: No Pervious Land Ose Acres A H, Forest, Plat 4.507 Impervious Land Dse Acres ANALYSIS RESIILTB Flow Frequency Return Periods for Predeveloped. POC pl Return Period Plow(efs) 2 year 0.000923 5 year 0.00127 10 year 0.001527 25 year ~?.002B85 50 year 0.002176 100 year 0.002489 08104-Wiadshadow Neatern Naehingtoa Hydrology Nodel PROJHCT RRPORT Developed Basin B - infiltration Gallery Project Name: Basin H Site Address: 14920 SC Berry Valley Rd City Yelm Report Date 7/28/2011 Gage Olympia Data Start 1955/10/01 Data Hnd 1999/09/30 Precip Scale: 0.60 WNHM3 Version: 8lement Flown To: Surface interf low Grounflwater Name Bain 1 Bypass: No GxonadWBter: No Pervious Land IIse Acres A B, Laws, Flat 3.419 impe_rv_ous_ Land IIse Acres ROADS FLAT 1.088 ANALYSIS RSSIILTS Flow Frequency Return Periods for Developed Plow Frequency Flow(CFS) 0701 2 Year . 0.2815 5 Year ~ 0.3547 10 Year 0.4033 25 Year 0.4652 50 Year 0.5118 100 Year = 0.5590 Flow Frequency Return Periods Eor Mitigated. POC pl Return period Flow cis) 2 year 0.183363 5 year 0.259534 10 year 0.311217 25 year 0.37772 50 year 0.428057 100 year 0.4'7904 08104-wiadshadow Western Washington Hyflrology Model PROJECT REPORT Developed Basin B - Infiltration Gallery Project Name: Bdiil^ B Site Address: 14920 SE Berry Valley Rd city Yelm Report Date 7/28/2011 Gage Olympia Data Start 1955/10/01 Data Snd 1939/09/30 Precip Scale: 0.90 Ww[D43 Versions 8lement Plows To: Surface iatarf low Groundwater Gravel Trench Bed 1, Gravel Trench Bed 1, Name Gravel Trench Bed 1 Bottom Length: 40ft. Bottom Width 5ft. Trench bottom slope 1: 0.01 To 1 Trench Left side slope 0: 0 To 1 Trench right aide slope 2: 0 To 1 Material thickaesa of first layer 5 Pour Space of material for first layer : 0.33 Naterial thickaesa of second layer 0 Pour Space of material for second Layer : 0 Material thickness of third layer 0 Pour apace of material for third layer : 0 Infiltration On Infiltration rate 20 Infiltration saftey factor 1 Discharge Structure Riser Height: 2.5 ft. Riser Diameter: 12 ln. NotchType Rectangular Notch Width 0.000 Et. Notch Height: G.000 ft. Outlet 1 Outlet 2 Outlet 3 rwnstream Connection 0 0 cility Type GraveJ7rench/Red PredpitalwhAppliedtofaci6t5' f v5p 86o il ' A ofi Quick Trench I ot ppGe to Fa it 4y cility Bottom Elevation (tt) 100 cility Dimensions nchLength Q, Outlet Sbucture 7ch 8otlom Width ~ Riser Height (It) 2.5 ''', dive Total Depth 5 Riser Diamder(rn) 12 :an slope of Trench 0.01 Riser Type NotcFred --! Side SbPe " Notch Type Rectangular II it Side Slope ~ ~ Notch Height (Itj r- J U u Notchl+ldth[(t) Ip derisl Layers for er 1 Thickness (R) 0 Orifice Diameter Heigh OMpx ~ 1 porosity 0,~ Number (In) (Ft) (cfsj w 2 Thckness [fQ ~ 1 ~- J Tp -- J 0 w 2 poros?y ~ 2 r- ~ t- J 0 ~ ~r 3 T hickness (itJ 0 3 ~- ~ ~ -"~ 0 'r 3 porosity 0 Itration ~- = ~ Trench Volume at Riser Head [acre-k) .004 rsued Infiltration Rate (in/hr) r2~ ._..I Prxd Increment 0.10 -J ration Reductron Factor ~-_...{ Show Pond Table Open Table -?-~ WettedSufaceArea(sidewaHs) NO i Volume Ir~trated(acre-R) 124.666 Total Volume Through Facity(aarN) 135.066 dVolune THough Riser[acre-ftj 10.4 Percent Irdiftrated 92.3 08104-Windahadow Western Washington Hydrology Model PROJECT REPORT Developed Basia B - lnfiltracion Gallery Project Name: Bdsin B Site Addrea a: 14920 SE Serry YH22ey Rd City Yclm Aeport Date 712.8 /2011 Gaga Olympia Data Start 1955 /10/01 Data Ead 1999 /09/30 Pzecip Scale: 0.80 WWHM3 Version: Gravel Treach Bed Hydraulic Table Stage fU Arse (acrl Vol ume lacr-ft) Deehra (cfa) InEiltlc tal 100.0 0.005 0.000 0.000 0.000 100.1 0.005 0.000 O.OOG 0.093 100.1 0.005 0.000 0.000 0.093 100.2 O.ODS O.C00 0.000 0.093 100.2 0.005 0.000 0.000 0.093 100.3 0.005 0.000 0.000 0.09.3 1 U0.3 0.005 0.001 0.000 0-093 100.4 0.005 0.001 0.000 0.093 100.4 0.005 0.001 0.000 0.093 100.5 0.005 0.001 0.000 0.093 100.6 0.005 0.001 0.000 0.093 100.6 0.005 0.001 0.000 0.09.3 100.% C.005 0.001 0.000 0.093 100.7 O.OOS 0.001 0.000 0.093 100.8 0.005 D.0O2 O. DOD 0.093 100.8 0.005 0.001 0.000 0.093 100.9 0.005 0.001 0.000 0.093 100.9 0.005 0.001 0.000 0.09.3 101.0 0.005 0.002 O.D00 0.093 101.1 0.005 0.002 0.000 0.093 101.1 0.005 0.002 0.000 0.093 101.2 0.005 0.002 0.000 0.093 101.2 O.OOS 0.002 0.000 0.093 101.3 0.005 0.002 0.000 0.093 101.3 O.OUS 0.002 0.000 0.093 101.4 0.005 0.002 0.000 0.093 101.4 0.005 0.002 0.000 0.093 101.5 0.005 0.002 0.000 0.093 101.6 0.005 0.002 0.000 0.093 101.6 0.005 0.002 0.000 0.093 101.7 0.005 0.003 0.000 0.093 101.7 0.005 0.003 0.000 0.093 101.8 0.005 0.003 0.000 0.093 101.8 0.005 0.003 0.000 0.093 101.9 0.005 0.003 0.000 0.093 101.9 0.005 0.003 0.000 0.093 102.0 0.005 0.003 0.000 0.093 102.1 0.005 0.003 0.000 0.093 2C2.2 O.DOS 0.003 0. 000 0.093 102.7. 0.005 0,003 0. 000 0.093 102.2. 0.005 0.003 0. 000 0.093 102.3 D.VOS 0.003 0. 000 0.093 102.3 0.005 0.004 0. 000 0.093 1.02.4 0.005 0.004 0. 000 0.093 102.4 0.005 0.004 0. 000 O.U93 102.5 0.005 0.004 0. 000 0.093 102.6 0.005 0.004 0. 128 0.093 102.6 0.005 0.004 0. 361 0.093 102.7 0.005 0.009 0. 663 0.093 102.7 0.005 0.009 1. 020 0.093 102.8 0.005 O.OOA 1. 426 0.093 202.8 C.C05 0.004 1. 874 0.093 102.9 0.005 0.004 2. 362 0.093 102.9 0.005 O.D04 2. 886 0.093 103.0 0.005 0.005 3. 443 0.093 103.1 0.005 0.005 4. 033 0.093 103.1 0.005 0.005 4. 653 0.093 103.2 0.005 0.005 5. 301 0.093 103.2 0.005 0.005 5. 978 0.093 103.3 0.005 0.005 6. 680 U.093 103.3 0.005 0.005 7. 909 0.093 103.4 0.005 0.005 8. 162 0.093 103.4 O.OUS 0.005 8. 939 0.093 103.5 0.005 0.005 9. 739 0.093 I03.b G.005 0.005 20 .56 0.093 103.6 0.005 0.005 11 .91 0.093 103.7 0.005 0.006 12 .27 0.093 103.7 0.005 G.006 13 .16 0.093 103.8 U.UUS 0.006 19 .07 0.093 103.8 0.005 0.006 19 .99 0.093 103.9 0.005 0.006 15 .94 0.093 103.9 0.005 0.006 16 .91 0.093 109.0 0.005 0.006 17 .89 0.093 104.1 0.005 0.006 18 .89 0.093 109.1 0.005 0.006 19 .92 0.093 104.2 0.005 0.006 20 .95 0.093 1C4.2 0.005 0.006 22 .01 0.093 104.3 O.GGS O.OGS 23. C9 C.093 1C4.3 O.b05 0.007 24. 18 0.093 104.4 0.005 0.007 25. 28 0.093 104.4 O.OUS 0.00'7 26. 41 0.093 104.5 0.005 0.007 27. 55 0.093 104.6 0.005 0.007 28. 70 0.093 109.5 0.005 0.007 29. 87 0.093 109.7 0.005 0.007 31. 06 0.093 104.7 0.005 0.007 32. 26 0.093 104.8 0.005 0.007 33. 48 0.093 104.8 0.005 0.007 34. 71 0.093 104.9 0.005 0.007 35. 96 0.093 104.9 0.005 0.008 37. 22 0.093 105.0 O.CGS O.GG6 38. 50 G.093 08105-9lindahaflow 9Pe stern Naehingtoa Rydrology Model PROTBCT RRPORT Basin C - Infiltration Gallery Project Name: Basin C Site Address: 14920 SE Berry Valley R.d City Yelm Report Data 7/28/2011 Gage Olympia Data Start 1955/10/01 Data Bad 1999/09/30 Pzecip Scale: 0.80 NWSM3 version: PR8D8V8LOPSD LAND DSH Name s Basin 1 Bypass: No Groundwater: No Pervious Land IIse Acres A 3, Porest, Flat 6.96 Isere rvious Land Dse Aerea ANALYSIS RBSDLTS Plow Frequency Retsi.rn Periods for Predeveloped. POC #1 Return Period Flow(cf a) 2 year 0.003703 5 year D.005097 10 year O.D0613 25 year O.D07567 50 year D.008735 100 year D.D09992 08105-Windehadow Western Washington Hydrology Nodel PROJECT REPORT Developed Basin C - infiltration Gallery Project Name: Basin C Site Addzese: 14920 SE 8e rry Valley Rd City : Yelm Report Data 7/28/2011 Gage Olympia Data Start 1955/10/01 Data 8nd 1999/09/30 Precip Scale: 0.80 WWHN3 Version: Element Flown To: Surface ]'.nterflow Groundwater Name Basin 1 Bypass: No GrouadWatez: No Pervious Land Uee Acres A B, Lawn, Flat 5.591 imperviona Land Dae Acres ROADS FLAT 1.369 ANALYSIS REBULT$ Flow Frequency Flow(CFS) 0701 2 Year 0.3593 5 Year v 0.4588 10 Year v 0.5256 25 Year a 0.6117 50 Year 0.6764 100 Year v 0.7425 Flow Frequency Return Periods Por Mitigated. POC #1 Return Pe r_i_od Flow(cfs) 2 year 0.236683 5 year 0.33998 10 year 0.409918 25 year 0.501205 50 year 0.57072 100 year 0.641947 Western Nashiagton Hydrology Model PROSECT REPORT Developed Basin C - Infiltration Gallery Project Name: Hasin C Site Addreae: 14920 SE Berry Valley Rd City : Yelm Report Date 7/28/2011 Oage glympia Data Start 1955/10/01 Data Ead 1999/09/30 Precip Scale: 0.80 WWHM3 version: Element Flows To: Surface Iaterf loM Groundwater Gravel Trench Ded 1, Gravel '_'rench Bed 1, Name Gravel Trench Bed 1 Bottom Length: SOft. BotCom width SfC. Trench bottom elope 1: 0.01 To 1 Trench Left aide elope 0: 0 To 1 Trench right side slope 2: 0 To 1 Material thickness of first layer 5 Pout Space of material for first layer 0.33 Material thickness of second layer 0 Pour Space of material for second layer 0 Material thickness of third layer 0 Pout apace of material for third layer 0 infiltration Oa ZaFiltration rate 20 Infiltration saf tey factor 1 Discharge Structure Riser Height: 2.5 ft. Riser Diameter: 12 in. Notchlype Rectangular Notch Width 0.000 ft. Notch Height: 0.000 ft. Outlet 1 Outlel2 Outlet 3 twnstream Connection 0 0 I1 icility Type Gravel Trench/Bed PrecipiationAppfiedtoFacility d t iat A F lil i OuiracTrench ~ ~yapaet pp a ad , t e icilily Bottom Elevation (tt) 100 ~cility Dimensions nch Length 50 OUllet Stroctur@ nch Bottom Width 5 J Riser Heigh (ftl 2.5 stive Totd Depth ~ Riser Diameter(nJ 12 Riser Type Notched tom slope of Trenrh p pt t Side Slope 0 Notch Type gectanyriar ={ ht Side Slope 0 Notch Height Iftt ~- J i Notch Width Ift) ~ J lteriel Layers for art Ttrckrress(Fll 5 Oritice DiemeterHeight OMex er t p«o¢ity 0,33 Number Qn) (Ft) (ds) er 2 T hickness (tt) p ~ ~ J~- J p er 2 porosity 0 • ~ p ~ J ~- ~ D er 3 T hidcness (ft) p ~ 3 ~ _I ~- _J B er 3 porosity 0 filtration YES ~ TrenchVolunealRiserHead(aae-ft) .005 ssured Irfiprdron Rde (in/hr( Zp ~ p~ Increment 0.70 =' hation Reduction Fedor I ~ ~ Show Pond Table Open Table J s Wetted SurfaceArea (sidewak) NO d Vokime Inldrated[aaefti 156.899 Totd Vokune Through Fac~Hty(aae-ft) 170.471 al VoAxne Thrwgh Riserlaae•R) 13.572 Percent Infiltrdrd 92.04 08105-Wiadehadow Western Washington Kydrology Model PROJECT REPORT Developed Basin C - Infiltration Gallery Project Name: Basin C Site Addreae: 7492C SE Berry Valley Rd City Yelm Report Date : 7/26/2011 Gage Olympia Data Start 1955/10/01 Data Bnd : 1999/09/30 Precip Scale: 0.80 WWKe63 Version: Gravel Trench Bad Kydraulic Table Stage lftl Area(aer) Volume(ac; -[rte De ehra (cfe) Inf ilt(e [e) 100.0 0.006 0.000 0.000 0.000 100.1 0.006 0.000 0.000 0.116 100.1 0.006 0.000 0.000 0.116 100.2 0.006 0.000 0.000 G.116 100.2 0.006 0.000 0.000 0.116 100.3 0.006 0.001 0.000 0.116 100.3 0.006 0.001 0.000 0.116 100.4 0.006 0.001 0.000 0.116 100.4 0.006 0.001 0.000 0.116 100.5 0.006 0.001 0.000 0.116 100.6 0.006 0.001 0.000 0.116 100.6 0.006 0.001 0.000 0.116 100.'7 0.006 0.001 0.000 0.116 100.7 0.006 0.001 0.000 0.116 100.8 0.006 0.001 0.000 0.116 100.8 0.006 0.002 0.000 0.116 100.9 0.006 0.002 0.000 0.116 100.9 0.006 0.002 0.000 O.1I6 101.0 0.006 0.002 0.000 0.116 101.1 0.006 0.002 0.000 0.116 101.1 0.006 0.002 0.000 0.116 101.2 0.006 0.002 0.000 0.116 101.2 0.006 O.D02 0.000 0.116 101.3 0.006 0.002 0.000 0.116 101.3 0.006 0.003 0.000 0.116 101.9 0.006 0.003 0.000 0.116 101.4 0.006 0.003 0.000 0.116 101.5 0.006 0.003 0.000 0.116 101.6 0.006 0.003 0.000 0.116 101.6 0.006 0.003 0.000 0.116 101.7 0.006 0.003 0.000 0.116 101.7 0.006 0.003 0.000 0.116 101.8 0.006 O.U03 0.000 0.116 102.8 0.006 0.003 0.000 0.116 101.9 0.006 0.004 0.000 0.116 101.9 0.006 0.004 0.000 0.116 102.0 O.OOK 0.004 0.000 0.11.6 102.1 0.006 0.004 0.000 0.116 102.1 0.006 0.004 0. 000 0.116 102.2 0.006 0.004 0. 000 0.116 102.?, 0.006 U.009 0. 000 0.116 102.3 0.006 0.004 0. 000 0.116 102.3 0.006 0.004 0. 000 0.116 102.9 0.006 0.005 0. 000 0.116 102.4 0.006 0.005 0. 000 0.116 102.5 0.006 0.005 e. oeo 0.116 102.6 0.006 0.005 0. 128 0.116 102.6 0.006 0.005 0. 361 0.116 102.7 0.005 0.005 0. 663 0.116 102.7 0.006 0.005 1. 020 0.116 102.8 0.006 0.005 1. 426 0.116 102.8 0.006 0.005 1. 874 0.116 102.9 0.006 0.005 2. 362 0.116 102.9 0.006 0.006 2. 886 0.116 103.0 0.006 0.006 3. 443 0.116 103.1 0.005 0.006 4. 033 0.116 103.1 0.006 0.006 4. 653 0.116 103.2 0.006 0.006 5. 301 0.116 103.2 0.006 0.006 5. 978 0.116 103.3 0.005 0.006 6. 680 0.116 103.3 0.005 0.006 7. 909 0.116 103.4 0.006 O.p06 8. 162 0.116 103.4 0.006 0.007 8. 939 0.116 103.5 0.006 0.007 9. 739 0.116 103.6 0.006 0.007 10 .56 0.116 103.6 0.006 0.007 11 .91 0.116 103.7 0.006 0.007 12 .27 0.116 103.7 0.005 0.007 13 .16 0.116 103.6 0.006 0.007 14 .07 0.116 103.8 0.005 0.007 14 .99 0.116 103.9 0.006 0.007 15 .94 0.116 103.9 0.006 0.007 16 .91 0.116 104.0 0.006 0.008 17 .89 0.116 104.1 0.006 0.008 18 .89 0.116 104.7 0.006 O.U08 19 .92 0.116 104.2 0.006 0.008 20 .95 0.116 104.2 0.006 0.008 22 .01 0.116 104.3 0.006 0.008 23 .09 0.116 109.3 0.006 0.008 24 .18 0.116 109.4 0.006 0.008 25 .28 0.116 104.4 0.006 0.008 26 .41 0.116 109.5 0.006 0.009 27 .55 0.116 104.6 0.006 0.009 28 .70 0.17.6 104.6 0.006 0.009 29 .87 0.116 104.7 0.006 0.009 37. .06 0.116 104.7 0.006 0.009 32 .26 0.116 104.8 0.006 0.009 33 .48 0.116 104.8 0.006 0.009 34 .71 0.116 104.9 0.006 0.009 35. 96 0.116 104.9 0.006 0.009 37. 22. 0.116 105.0 0.006 0.009 38 .50 0.116 08105-Windahadow Western Washington Hydrology Model PROJBCT REPORT Hasin D - Infiltration Gallery Project Name: Basin D Site Address: 14920 £,E BeYYy Va ].1By Rd City Yeim Report Date 7/29/2011 Gage Olympia Data Start 1955/10/01 Data Snd 1499/09/30 Precip Scale: 0.80 WWHM3 Veraioa: Name Basin 1 Hypasa: No Groundwater: No Pervious Laad IIae Aczes A B, Forest, Flat 2.5 Imaervious Land Dee Acres ANALYSIS RBSIILTS Flow Frequency Return Periods for Predeveloped. POC kl Return Period Plow (cfa) 2 year 0.000512 5 year 0.000704 10 year 0.000897 25 year 0.001046 50 year 0.001207 100 year 0.001381 08105-windahadow western waehingtoa Hydrology Model PROJECT RHPORT Developed Haein D - Infiltratioa Gallery Element Flows To: Surface Interflow Groundwater Name t Basin 1 Bypassi No Groundwater: No P_ervioua Lanfl IIee Acrea A B, La-m, Flat 2.26 Impervious Land IIee Acrea ROADS FLAT 0.24 ANALYSIS RBSOLTS Flow Frequency Flow (CPS) 0701 2 Year . 0.0678 5 Year ~ 0.0939 10 Year a 0.1132 25 Year ~ 0.1403 50 Year m 0.1623 100 Year ~ 0.1861 Flow Frequency Return Periods for Mitigated. POC #1 Return Period Flow(cf s) 2 year 0.042642 5 year 0.069882 30 year C.090968 25 year 0.121019 50 year 0.14585 100 year 0.1'72783 08105-Windahadow western Washington Hydrology Model PROJHCT REPORT Developed Sasin D - Infiltratioa Gallery Elemeat Flows To: surface Interflow Gravel Trench Bed 1, Gravel Trench Bd 1, Groundwater Name [ Gravel Trench Bed 1 Hottom Length: loft. Hottom width s Sft. Treach bottom elope 1: 0.01 To 1 Trench Left aide slope 0: 0 To 1 Trench right side elope 2: 0 To 1 Material thickness of first layer 5 Pour Space of material for first layer ; 0.33 Material thickaesa of second layer 0 Pour Space of material for second layer : 0 Material thickness of third layer D Pour Space of material for third layer 0 Infiltration On Zafiltratioa rata l0 Infiltration eaftey factor 1 Discharge Structure Riser Height: 2.5 ft. Riser Diameter: 17 in. NotchType Rectangular Notch width o.D00 ft. Notch Height: 0.000 ft. Outlet 1 Outl et 2 Outlet 3 rwnstretmn Connection ~( -- ~I 0 I~ 0 cility Type Gravel Trench(Bed FlecipRaGon Applied to Facity Ouick Trench ,.._ _ etwriA 'iedtaP ..,.. ~,.~~.f~._..._...- ~cility Bottom Elevation (ft) 100 ~cility Dimensions nch Lenglh ~(~ Outlet $trudure rrch Bottom Width S ~ Riser Height (itJ 2 5 -~ xtive Total Depth ~~ Risor Diameter(nJ 12 tan slope of Trench 0 Q1 P,iser type Notched - ~ 5ide Slope ~ Notch Type Rectal ngular '~ h Side Slope 0 Notch Height (RJ ~- .~ Notch Width fkl (D lteriel Layers for rr 1 Thickness (Ip Orifice Diameter Height OMtlx er 1 porosRV 0.33 Number {In) (Ft) (ds) er 2 Thickness (ft) ~0 J ~- J ~ ~ 0 er 2 porosity ~~ ? ~p - ~ ~':'' 0 er 3 Thickness ((t) p ~ 3 ~~ -~ ~ J 0 or 3 porosity 1 1 filtration ~c -~ Trench Volume at Riser Head (acrefl) .001 fsured IriHration Rate (n/hr) 20 ~ Pond Increment 0.10 -J ~retionRecAsctionFada ~_..~ Show PondTeble OpenTahde -~ ~Wetted5ufaceArea(sidewallsJ NO ':~ !I Volume IrifiArated(xre-ftJ 28.07 Tdal Volume Though Facilily(acredl) 30.109 !I Voh+ne Through Rbedaae-ftl 2.038 Percent Infiltrated 9323 oalos-windehador Western Washington Hydrology Model PROJECR' REPORT Developed Haeia D - Infiltration Gallery Gravel Treacb flefl Hydraulic Table S[atLe lfU Area (acr) Volwmfacrf[1_ Dachrg lcfe) Snfil[fc fe) ' 100.0 0.001 0.000 0.000 0.000 100.1 0.001 0.000 0.000 0.023 100.1 0.001 0.000 0.000 0.023 100.2 100.2 0.001 0.001 0.000 0.000 0.000 0.000 0.023 0.023 100.3 0.001 0.000 0.000 0.023 100.3 0.001 0.000 0.000 0.023 100.4 O.OG1 0.000 0.000 0.023 100.4 0.001 O.U00 0.000 0.023 100.5 0.001 0.000 0.000 0.023 100.6 0.001 0.000 0.000 0.023 ' 100.6 0.001 0.000 0.000 0.023 100.7 0.001 0.000 0.000 0.023 100.7 0.001 0.000 0.000 0.023 100.8 0.001 0.000 0.000 0.023 100.8 0.001 0.000 0.000 0.023 100.9 0.001 0.000 0.000 0.023 100.9 0.001 0.000 0.000 0.023 ' 101.0 0.001 0.000 0.000 0.023 101.1 0.001 0.000 0.000 0.023 101.1 0.001 0.000 0.000 0.023 101.2 0.001 0.000 0.000 0.023 ' 101.2 0.001 0.000 0.000 0.023 101.3 0.001 0.000 0.000 0.023 101.3 0.00]. 0.001 0.000 0.023 101.4 0.001 0.001 0.000 O.D23 101.4 0.001 0.001 0.000 0.023 101.5 0.001 0.001 0.000 0.023 101.6 0.001 0.001 0.000 0.023 101.6 0.001 0.001 0.000 0.023 107.7 0.001 0.001 0.000 0.023 101.7 0.001 0.001 0.000 0.023 101.8 0.001 0.001 0.000 0.023 101.8 0.001 0.001 0.000 0.023 101.9 O.DO1 0.001 0.000 0.023 101.9 0.001 0.001 0.000 0.02.3 ' 102.0 0.001 0.001 0.000 0.023 102.1 0.001 0.001 0.000 0.023 1.02.1 0.001 0.001 0.000 0.023 1.02.2 0.001 0.001 0.000 0.023 ' 102.2 0.001 0.001 0.000 0.023 102.3 0.001 0.001 0.000 0.023 102.3 0.001 0.001 0.000 D.D23 102.9 0.001 0.001 0.000 0.023 102.4 0.001 0.001 0.000 0.023 102.5 0.001 O.OOl 0.000 0.023 ' 102.b O.OU1 0.001 0.128 0.023 102.6 0.001 0.001 0.361 0.023 102.7 0.001 0.001 0.663 0.023 102.7 0.001 0.001 1.020 0.023 102.8 0.001 0.001 1.426 O.D23 102.8 0.001 0.001 1.874 0.023 102.9 0.001 0.001 2.362 0.023 102.9 0.001 0.001 2.886 0.023 103.0 0.001 0.001 3.443 0.023 103.1 0.001 0.001 4.033 0.023 103.1 0.001 0.001 4.653 0.023 103.2 0.001 O.DO1 5.301 0.023 103.2 0.001 0.001 5.978 0.023 103.3 0.001 0.001 6.680 0.023 103.3 0.001 0.001 7,A09 0.023 103.4 0.001 0.001 8.162 0.023 103.4 0.001 0.001 8.939 0.023 103.5 0.001 0.001 9.739 0.023 103.6 0.001 0.001 10.56 O.D23 103.6 0.001 0.001 11.41 0.023 103.7 0.001 0.001 12.27 0.023 103.7 0.001 0.001 13.16 0.023 103.8 0.001 0.001 14.07 0.07.3 103.8 O.OD1 0.001 14.99 0.023 103.9 0.001 0.001 15.94 0.023 103.9 0.001 0.002 16.91 0.023 109.0 0.001 0.002 17.89 0.023 104.1 0.001 0.002 18.89 0.023 104.1 0.001 0.002 19.92 O.D23 104.2 0.001 0.002 20.95 0.023 104.2 0.001 0.002 22.01 0.023 104.3 0.007 0.002 23.09 0.023 104.3 0.001 0.002 29.18 0.023 104.4 0.001 0.002 25.26 0.023 1.04.4 0.001 0.002 26.41 0.023 104.5 0.001 0.002 27.55 0.023 104.6 0.001 0.002 28.70 0.023 109.6 0.007 0.002 29.87 0.023 104.7 0.001 0.002 31.06 0.023 109.'7 0.001 0.002 32.26 0.023 104.8 0.001 0.002 33.48 0.023 104.8 0.002 0.002 39.71 0.023 104.9 0.001 0.002 35.96 0.023 109.9 0.001 0-002 37.22 0.023 105.0 0.001 0.002 38.50 0.023 08109-Niadahadow Nestern Nashiagton Hydrology Model PROJECT REPORT Basin 8 - Infiltration Gallery Project Name: Basin E Site Address: 14920 SE Berry Valley Rd City Yelm Report Date 8/2/2011 Gage Olympia Data Start 1955/10/01 Data 8nd 1999/09/30 Precip Scala: 0.80 NWHM3 Version: PRSDEVHLOPBD LAND QS8 Nama Basin 1 Hypase: No GroundNater: No Pervious Land Qae Acres A 8, Foreet, Flat 7.362 Impervious Land IIee Acres ANALYSI6 R88QLTS Flow Prequency Retuza Periods foz Predeveloped. POC #1 Return Period Flow (cf e) 2 year 0.001507 5 year 0.002074 10 year 0.002495 25 year 0.003079 50 year 0.003555 100 year 0.009066 08104-Wiadshadow Western Washiagtoa Rydrology Model PROJBCT RBPORT Developed Basin B - infiltratioa Gallery Project Name: Site Address: City RegorC Date Gage Data Start Data Snd : Precip Scale: WWRM3 Version Basin G 14920 SE Berry Valley Rd Yelm 8/2/2011 Olympia 1955/10/01 1999/09/30 0.80 8lement Flows To: Surface Interfla Groundwater Name Basin 1 Bypass: Na Groundwater: No Pervious Land IIse Acres A H. Lawn, Flat 6.166 ImDervioue_Laad IIse Acres ROADS PLAT 1.196 ANALYSIS RESUZTS Plow Frequency Plow (CPS) 0701 2 Year 0.3180 5 Year 0.9134 10 Yeaz . 0.4797 25 Year 0.5673 50 Yeaz = 0.6353 100 Year 0.7058 Flow Prequency Return Periods for Mitigated. POC kl Return Period Flow(cfe) 2 year 0.20696 5 year 0.305761 10 year 0.37659 25 year 0.471842 50 year 0.546825 100 year 0.625168 06104-Windehadow Nesters Nashington Hydrology Model PROJECT RHPORT Developed Hasia B - Infiltration Gallery Project Name: Site Address: City Report Date Gage Data Start Data End Precip Scale: NWHM3 Version Basin E 14920 SE Berry Valley Rc Yelm 8/2/2011 Olympia 1955/10/01 1999/09/30 0.80 Element Plows To: Surface Interflow Groundwater Grave]. Trench Bed 1, Gravel Trench Bed 1, Name Gravel Trench Bed 1 Hottom Length: 45ft. Hottom Width Sft. Trench bottom elope 1: 0.01 To 1 Trench Left aide elope 0: 0 TO 1 Trench right aide elope 2: 0 To 1 Material thickness of first layer 5 Pour Space of material for first layer 0.33 Material thickness of second layer 0 Pour apace of material for second layer 0 Material thickness of third layer 0 Pour Space of material for third layer 0 infiltration On Infiltration rate 2U Infiltration eaftey factor 1 Discharge Structure Riser Height: 2.5 ft. Riser Diameter: 12 i.n. Notehlype Rectangular Notch Width 6.000 ft. Notch Height: 0.000 ft. Outlet t Outlet 2 Outlet 3 ~~ ~~ 0 Precpitation Applied to Faciky ty Bottom Elevation (ft) ty Dimensions Length qS Outlet Structure Bottom Width 0 Ricer Heigh fltJ 2.5 ! iota) Depth 0 Riser Diameter[nJ 12 " dope aF Trench 0,01 Riser Type Notchad ={ !Slope © Notch Type Rectangular ':-~ ie Slope 0 Notch HegM (ttJ ~ J Notch Width ptJ r .I ial Lnyers for rtuckrwss IuJ 5. Orifice Diameter Height OMax ~atosity 0;33 Number (In) (Ft) (ds) Thickness (k) Qa 1 ~-~ ~ ~ 0 porosity .. 2 ~-_..~ ~ J 0 fhicknessllU 3 ~~~J 0 laosity 0, ~ lion YES Trench Volume at Risr Head (aae•Iq .004 d Infdtralion Rate f inMJ 20 J Pond InaemeM 0.10 r Reduction Factor ~.J Show Pond Table Open Table -~{ [edStuteceArea(sidewalsJ NO umelnfiHtated(acrefl) 137.912 TotdVoManeTlvoughFaciliq{acre-fl) 149.E ume Through Riser(aae•ftJ 11.408 Percent IntiMrated 92.36 08104-Windshadow weatera waehiagtoa Hydrology Model PROJECT REPORT Developed Basin H - Infiltration Gallery Project Name: Basin E Site Addreas: 14920 SC Berry Valley Rd City Report Date : Gage . Data Start Data 8nd Precip Scale: wwxl~i3 version Yelm 8/2/2011 Olympia 1955/10/01 1999/09/30 0.60 Gravel Trench Sed Hydraulic Table 8taae (f[)_ Are9 (aprl Volvme(acr-ft) Dschrg fcf e) lafilt lcfel 100.0 0.005 0.000 0.000 0.000 100.1 0.005 0.000 0.000 0.104 100.7. 0.005 0.000 0.000 0.104 100.2 0.005 0.000 0.000 0.104 100.2 o.oos o.ooo o.ooo 0.109 100.3 o.oos o.000 0.000 0.104 100.3 0.005 0.001 0.000 0.104 100.4 0.005 0.001 0.000 0.104 100.4 0.005 0.001 0.000 0.104 100.5 0.005 O.OD1 0.000 0.104 100.6 0.005 0.001 0.000 0.104 100.6 0.005 0.001 0.000 0.104 100.7 0.005 0.001 0.000 0.104 100.7 0.005 0.001 0.000 0.104 loo.a o.oos o.ool o.oo0 0.104 100.9 o.oos o.ool o.oo0 0.104 100.9 0.005 0.002 0.000 0.104 100.9 O.OOS 0.002 0.000 0.104 101.0 0.005 0.002 0.000 0.104 101.1 0.005 0.002 0.000 0.204 101.1 o.oos o.aoz o.oo0 0.104 101.2 0.005 0.002 0.000 0.109 101.2 0.005 0.002 0.000 0.104 101.3 0.005 0.002 0.000 0.104 101.3 0.005 0.002 0.000 O.i04 101.4 0.005 0.002 0.000 0.104 101.4 0.005 0.002 0.000 0.109 ].01.5 0.005 0.003 0.000 0.104 101.6 0.005 0.003 0.000 0.104 101.6 0.005 0.003 0.000 0.104 101.7 0.005 0.003 0.000 0.109 101.7 0.005 0.003 0.000 0.104 101.9 0.005 0.003 0.000 0.104 101.8 0.005 0.003 0.000 0.104 101.9 O.OQS 0.003 0.000 0.104 101.9 0.005 0.003 0.000 0.104 ~~ loz.o o.oos 0.003 0. 000 0.109 102.1 0.005 0.004 0. 000 0.104 102.1 0.005 0.004 0. 000 0.104 102.2 0.005 0.009 0. 000 0.109 102.2 0.005 0.009 0. 000 0.104 102.3 0.005 0.004 0. 000 0.104 102.3 0.005 0.004 0. 000 0.104 102.4 0.005 0.004 0. 000 0.109 102.4 0.005 0.009 0. 000 0.104 102.5 0.005 0.004 0. 000 0.109 102.6 0.005 0.004 0. 128 0.104 102.6 0.005 O.U04 0. 361 0.104 102.7 0.005 0.005 0. 663 0.104 102.7 0.005 0.005 1. 020 0.109 102.8 0.005 0.005 1. 926 0.104 102.8 0.005 0.005 1. 874 0.104 102.9 0.005 0.005 2.. 362 0.104 102.9 0.005 0.005 2. 886 0.104 103.0 0.005 0.005 3. 443 0.104 103.1 0.005 0.005 4. 033 0.104 103.1 0.005 0.005 4. 653 0.104 103.2 0.005 0.005 5. 301 0.109 L03.2 0.005 0.005 5. 978 0.109 103.3 0.005 0.006 6. 680 0.104 103.3 0.005 0.006 7. 909 0.109 103.4 0.005 0.006 8. 162 0.104 103.4 0.005 O.Ob6 8. 939 0.104 103.5 0.005 0.006 9. 739 0.104 103.6 0.005 0.006 10 .56 0,104 103.6 0.005 0.006 11 .41 0.109 103.7 0.005 0.006 12 .27 0.109 103.7 0.005 0.006 13 .16 0.104 103.8 0.005 0.006 19 .07 0.104 103.8 0.005 0.007 14 .99 0.104 103.9 0.005 0.007 15 .94 0.104 103.9 0.005 0.007 16 .91 0.109 104.0 0.005 0.007 17. 89 0.109 104.1 0.005 0.007 18 .89 0.104 104.1 0.005 0.007 19. 92 0.104 104.2 0.005 0.007 20. 95 0.104 104.2 0.005 0.007 22. 01 0.104 104.3 0.005 0.007 23. 09 0.104 104.3 0.005 0.007 24. 18 0.104 104.4 0.005 0.007 25. 28 0.104 109.4 0.005 0.008 26. 41 0.104 109.5 0.005 0.008 27. 55 0.104 104.6 0.005 0.008 28. 70 0.104 104.6 0.005 0.008 29. 87 0.104 104.7 0.005 0.008 31. 06 0.104 104.7 0.005 0.008 32. 26 0.104 104.8 0.005 0.008 33. 48 0.104 104.8 0.005 0.008 34. 71 0.104 104.9 0.005 0.008 35. 96 0.104 104.9 0.005 0.008 37. 22 0.109 105.0 0.005 0.009 38. 50 0.109 08105-Nindahadow Nesters Washington Hydrology Model PROJHCT REPORT Developed Baaia P - Infiltratioa Gallery Project Name: Basin F Site Addreas: 14920 SB Berry Valley Rd City Yelm Report Date 8/2/2011 cage Olympia Data Start 1955/10/01 Data Snd 1999/09/30 Precip Scale: 0.80 WNHM3 version: Slemant Plone To: Surface Znterflow Groundwater Name Basin 1 Bypaea: NO Groundwater: No Pervious Land IIae Acres A e, Lawn, Flat 6.316 Impervious La_nd_Oee Acres ROADS FLAT 1.913 ANALYSIS RSSDLTS Plow Frequency Return Periods Por Predevaloped. POC K1 Return_Period Flow cf e) 2 year 0.001694 5 year 0.002319 10 year 0.002789 25 year O.OD3442 50 year 0.0039'73 100 year 0.004545 Flow Frequency Return Periods for Mitigated. POC pl Retura Period Flow(cfa) 2 year 0.324102 5 year 0.459566 10 year 0.551602 25 year 0.670144 50 year 0.759944 100 year 0.850953 08105-Windehadow Western Washington Hydrology Model PROJECT RHPORT Developed Basin P - Infiltration Gallery Project Name: site Address: City Report Date Gage Data Start Data Ead Precip Scale: WW8M3 Version Basin F 14920 SE Berry Valley Rd Yelm 8/2/2011 Olympia 1955/10/01 1999/09/30 0.80 Element Plows To: Surface Inter low Groundwater G ravel. Trench Bed 1, Oravel Tre:ich Bed 1, Name Gravel Trench Bed 1 Bottom Length: 70ft. Bottom Width Sft. Trench bottom elope 1: 0.01 To 1 Trench Left aide elope 0: 0 TO 1 Trench right aide slope 2: 0 To 1 Material thickness of first layer 5 Pour Space of material for first layer 0.33 Material thickness of second layer 0 Pour Space of material for second layer 0 Material thickness of third layer 0 Pour Space of material for third layer 0 infiltration On Infiltration rate 20 Infiltration aaftey factor 1 Discharge Structure Riser Height: 2.5 ft. Riser Diameter: i2 in. NotchType Rectangular Notch Width 0.000 ft. Notch Height: 0.000 ft. Outlet T Outlet 2 OutletOutjet 3 rvmstream Connection 0 0 citify Type Gravel Trenct/Bed PredpilationAppfiedtoFacilily OuidcTrench I .~~ . citify Bottom Elevation (N) 100 citify Dimensions ,ch Length ® Outlet Structure iclr Bottom Width ~ Riser Height (Ft] 2 5 cove Total Depth 5 Riser Diemeter(n) 12 om sbpe of Trench 0;01 Riser Type Notched Side Sbpe 0 Note' Type Rectangular >t Side Slope 0 Notch Height llt) ~0 - J __ Notch Width i(I) r0 -= Rerial layers for ~r 1 Thickness (It) 0 Orifice Diameter Height OMex xlParosily 0.33 Number (In) (Ft) (cfs) .r 2 Thicknesa (k) l 1 I ~ _--' ~p --:~ 0 rr 2 poroaily 0 2 ~-''_'I ~- ~ 0 sr 3 T hickness (ftl ~ j ~~ ~ r- _I 0 u 3 porosity Itretion +~S ~ Trench Volume at Riser Head (acre-tt) ,007 sured Irr(dration Rate [m/l,r) 2U ~ Pond Increment 0.10 atbn Reduction Factor r-J Show Pond Table Open Ta61e J Wetted SufaceArea (sidewdla) NO IVotume Irdiltrated(aae-Flt 219.271 Total Vokime Through Facdily(erae•kj 237.774 IVolrmeThraghRiaer(accre-It) 18.502 Fen~entlr~drated 9222 08105-wiadahadow western Naebingtoa Hydrology Model PROJHCT REPORT Developed Baeia F - Infiltration Gallery ' Project Name: Basin F Site Address: 14920 S& Berry Valley Rd City Yelm Report Date 8/2/2011 Gage Olympia Date Start 1955/10/01 Data Bad 1999/09/30 ' Precip Scale: 0.80 wwHM3 Version: Gravel Trench Bed Hydraulic Table Stale a(ft/ Azea(ser) Volume(acz_ft) _ Dechzg (cf e} inYi l[(cfs) 100.0 0.008 0.000 0.000 0.000 100.1 0.008 0.000 0.000 0.762 100.1 0.008 0.000 D.000 0.162 100.< 0.008 0.000 0.000 0.162 100.2 0.008 0.007 0.000 0.162 100.3 0.008 0.001 0.000 0.162 100.3 0.008 0.001 0.000 0.162 100.4 0.008 0.001 0.000 0.162 100.4 0.008 0.001 0.000 0.162 100.5 0.009 0.001 0.000 0.162 100.6 0.008 O.OG1 0.000 0.162 100.6 0.008 O.D02 0.000 0.162 100.7 0.008 0.002 0.000 0.162 100.7 0.008 0.002 0.000 0.162 100.8 0.008 0.002 0.000 0.162 100.8 0.008 0.002 0.000 0.162 100.9 0.008 0.002 0.000 0.162 100.9 0.008 0.003 0.000 0.162 101.0 0.008 0.003 0.000 0.167. 101.1 0.008 0.003 0.000 D.162 101.1 0.008 0.003 0.000 0.162 1D1.2 0.008 0.003 0.000 0.162 1D1.2 0.008 0.003 0.000 0.162 101.3 0.008 0.003 0.000 0.162 101.3 0.008 0.004 0.000 0.162 101.4 0.008 0.004 0.000 0.162 101.4 0.008 0.004 0.000 0.162 101.5 0.006 0.004 0.000 0.162 101.6 0.008 0.004 0.000 0.162 101.6 0.008 0.004 0.000 0.162 101.7 0.008 0.004 0.000 0.162 101.7 0.008 0.005 0.000 0.162 101.6 0.008 0.005 0.000 0.162 101.8 0.008 0.005 0.000 0.162 101.9 0.008 0.005 0.000 0.162 101.9 0.008 0.005 D.000 0.162 102.0 0.008 0.005 0. 000 0.162 102.1 O.OOA 0.005 0. 000 0.162 102.1 0.008 0.006 0. 000 0.162 102.2 0.008 0.006 0. 000 0.162 102.2 0.008 0.006 0. 000 0.162 102.3 0.008 0.006 0. 000 0.162 102.3 0.008 0.006 0. 000 0.162 102.4 0.008 O.UU6 0. 000 0.162 102.4' 0.008 0.006 0. 000 0.162 102.5 0.008 0.007 0. 000 0.162 102.6 0.008 0.007 0. 128 0.162 102.6 0.008 0.007 0. 361 0.162 102.7 0.008 0.007 0. 663 0.162 102.7 0.008 0.007 1. 020 0.162 102.8 0.008 0.007 1. 426 0.162 102.8 0.008 0.008 1. 874 0.162 102.9 0.008 0.008 2. 362 0.162 102.9 0.008 0-008 2. 886 0.162 103.0 0.008 0.008 3. 493 0.162 103.1 0.008 0.008 4. 033 0.162 103.1 0.008 0.008 4. 653 0.162 103.2 0.008 0.008 5. 301 0.162 103.2 0.008 0.009 5. 978 0.162 103.3 O.OOA 0.009 6. 680 O.i62 103.3 0.008 0.009 7. 409 0.762 103.4 0.008 0.009 A. 162 0.162 103.4 0.008 0.009 8. 939 0.162 103.5 0.008 0.009 9. 739 0.162 103.6 0.008 0.009 10 .56 0.162 103.6 0.008 D.O10 11 .41 0.162 103.7 0.008 0.010 12 .2,7 0.162 103.7 0.008 0.010 13 .16 0.162 103.8 0.006 0.010 19 .07 0.162 103.8 0.008 0.010 19 .99 0.162 103.9 0.008 0.010 15 .94 0.162 103.9 0.008 0.010 16 .91 0.162 104.0 0.008 0.011 17 .89 0.162 104.1 0.008 0.011 18 .89 0.162 104.1 0.008 0.011 19 .92 0.162 104.2 0.008 0.011 20 .95 0.162 104.2 0.008 0.011 22 .01 0.162 104.3 0.006 0.011 23 .09 0.162 104.3 0.00$ 0.011 24 .18 0.162 104.4 0.008 0.012 25 .28 0.162 109.4 0.008 0.012 26 .41 0.162 104.5 0.008 0.012 27 .55 0.162 104.6 0.008 0.012 28 .70 0.162 104.6 0.008 0.012 29 .67 0.162 109.7 0.008 0.012 31 .06 0.162 104.7 0.008 0.013 32 .26 0.162 104.8 0.008 0.013 33 .48 0.162 104.8 0.008 0.013 34 .71 0.167. 104.9 0.008 0.013 35 .96 0.162 104.9 0.008 0.013 37 .22 0.162 105.0 0.008 0.013 38 .50 0.162 08104-Wiadshadom Western Washington Hydrology Model PRO.THCT RBPORT Developed Roof Area (Aaeva:e 2,500 af) Project Name: roof Site Address: 14920 SE Serry Valley Rd City Yelm Report Date 7/28/2011 Gage Olympia Data Start 1955/10/01 Data Sad 1999/09/30 Precip Scale: 0.80 WWHM3 Version: Element Flome To: Surface Iaterflow Groundmater Name : Basin 1 Bypass: No Groundwater: No Pervious Laad IIse Acres Impervious Land _OSe Acrea ROADS FLAT 0.057 ANALYSIS RSSVLTS Plow Frequency Return Periods for Developed Plow Frequency Plom(CFS) 0701 2 Year = 0.0141 5 Yeaz . 0.0171 SO Year 0.0189 25 Year = 0.0211 SO Year 0.0227 100 Year = 0.0242 Plow Frequency Return Periods fox Mitigated. POC pl Return Period Flow(cf a) 2 year 0.008885 5 year 0.011907 10 year 0.012692 25 year O.Oi3085 50 year 0.013193 100 year 0.01324 08104-Wiadahadow Weeteza Washington Hydrology Model PROJECT REPORT Developed Roof Area (Assume 2,500 af) Project Name: roof Site Addzeea: 14920 SE Berry Va 11ey Rd City Yelm Report Date 7/28/2011 Gage Olympia Data Start 1955/10/01 Data End 1999/09/30 Precip Scale: 0.80 WWHM3 Version: Blement Flown TO: Surface Interf low Groundwater Gravel Trench Bed 1, Gravel Trench Bed 1, xeme Gravel Trench Bed 1 Bottom Lenqth: 10ft. Bottom Width 2f t. Trench bottom slope 1: G.C1 'to 1 Trench Left aide elope 0: 0 To 1 Trench right aide elope 2: 0 To 1 Material thickness oP first layer : 3 Pour Space of material for fizet layer 0.33 Material thickness of second layer 0 Pour Space of material for second layer 0 Material thickness of third layer 0 Pour Space o! material for third layer : 0 Infiltration On Infiltration rate 20 infiltration saftey factor 1 Dieeharae__Structure Riser Height: 1 ft. Riser Diameter: 6 in. Notchlype : Rectangular Notch Width 0.000 ft. Notch Height: 0.000 ft. Roof Area Outlet 1 Outlet 2 Outlet 3 iwnstreem Connection 0 0 0 cility Type Gravel Trench/Bed PrecgitabonAppfiedloFaciRy OuickTrench -.. etlon iedooFaoi citify Bottom Elevation (ft) 100 citify Dimensions xhLergth 10 OutletStructura Bch BoltomVlydlh ~ Rita HeigH (Ili ~-~ Ttive Total Depth ~ Risa Diameta(ini ~ J om sbpe of Trench U.Ot Rua Type Notched J Side Slope 0 Notch Type Rectangular J k Side Slope 0 Notch Haight Qti r- ", Notch Width(ft) ~--J derinl Layers for w t ihidcnes: ptl 0 Orifice Diameter Height OMax =_r t porosity p,33 Number (In) (Ft) (c}s) x 2 T hickness [IQ 0 ~ T ~ J~ J ~ x 2 Porosity p l 2 ~ ~:.~ ~ ~ ~ x 3 Thgkness (IQ ~ 3 r0 _J ~ _I ~ x 3 porosity Itretion YES Trench Volume al Rua Head (ecro-NI .000 rcned Infiltration Rafe [inlhr) ~ ~ Pond Inaement 0 t 0 J ratan Reduction Factor ~ ~ Show Pond Table Dpen Table WettedSwfaceArea(sidewals) ND d Volume Intiltrated(acre~Q 6.462 Total Valune Through Facility(acre-fl) 6.567 dVoAme Though Riser(aae-fl) 0,105 Percent Iddtrated 98.4 08104-Nindehadow 9Leatern Waehiagton Hydrology Model PROSECT RSPORT Developed Roof Area (Assume 2,500 sf) Project Names roof ' Site Address: 7.4920 SF. Berry Valley Rd City Yelm Repozt Date 7/28/2.811 Gage Olympia ' Data Start 1955/10/01 Data Bnd 1999/09/30 Pzecip Scale: 0.80 . WWHM3 Versioa: as Gravel Treach Bed Hydraulic Table $Clen(LC) Aren(acr) Vol ume(ncz-LU ~tleh rg (cfe) InL ile(C29) 100.0 0.000 0.000 0.000 0.000 ' 100.0 0.000 G.000 0.000 0.009 100.1 0.000 0.000 0.000 0.009 100.1 O.OOG 0.000 0.000 0.009 100.1 0.000 0.000 0.000 0.009 100.2 0.000 0.000 0.000 0.009 100.2 0.000 0.000 O.D00 tl.009 100.2 0.000 0.000 0.000 0.009 ' 100.3 0.000 0.000 0.000 0.009 100.3 0.000 0.000 0.000 0.009 100.3 0.000 0.000 0.000 0.009 100.4 0.000 0.000 0.000 0.009 100.9 0.000 0.000 0.000 0.009 100.9 0.000 0.000 0.000 0.009 100.5 100.5 0.000 0.000 0.000 0.000 0.000 0.000 0.009 0.009 100.5 0.000 0.000 0.000 0.009 100.6 0.000 0.000 0.000 0.009 100.6 0.000 0.000 0.000 0.009 100.6 0.000 0.000 0.000 0.009 100.7 0.000 0.000 0.000 0.009 100.7 0.000 0.000 0.000 0.009 ' 100.7 0.000 0.000 0.000 O.D09 100.8 0.000 0.000 0.000 0.009 100.8 0.000 0.000 0.000 0.009 100.8 0.000 0.000 0.000 0.009 100.9 0.000 0.000 0.000 0.009 100.9 0.000 0.000 0.000 0.009 100.9 0.000 0.000 0.000 0.009 ' 101.0 0.000 0.000 0.000 0.009 101.0 0.000 0.000 0.000 0.009 101.0 0.000 0.000 0.030 0.009 101.1 0.000 0.000 0.084 0.009 101.1 0.000 0.000 0.154 0.009 101.1 0.000 0.000 0.237 0.009 101.2 0.000 0.000 0.331 0.009 101.2 0.000 0.000 0.936 0.009 101.2 0.000 0.000 0.549 0.009 101.3 0.000 0.000 0.671 0.009 101.3 0.000 0.000 0.800 0.009 101.3 0.000 0.000 0.937 0.009 101.4 0.000 0.000 1.081 0.009 101.4 0.000 0.000 1.232 0.009 101.4 0.000 0.000 1.389 0.009 101.5 0.000 0.000 1.552 0.009 101.5 0.000 0.000 1.722 0.009 ' 101.5 0.000 0.000 1.897 0.009 101.6 0.000 0.000 '1.077 0.009 101.6 0.000 0.000 2.263 0.009 101.6 0.000 0.000 2.454 0.009 ' 101.7 0.000 0.000 2.651 0.009 101.7 0.000 0.000 2.852 0.009 101.7 0.000 0.000 3.058 0.004 101.8 0.000 0.000 3.269 O.OC9 101.8 0.000 0.000 3.984 0.009 101.8 0.000 0.000 3.709 0.009 101.9 101.9 0.000 0.000 0.000 0.000 3.929 4.156 0.009 0.009 101.9 0.000 0.000 4.391 0.009 102.0 O. U00 0.000 4.628 0.009 102.0 O.V00 0.000 4.870 0.009 ' 102.0 0.000 0.000 5.115 0.009 102.1 0.000 0.000 5.369 O.OC9 102.1 0.000 0.000 5.618 0.009 ' 102.1 0.000 0.000 5.875 0.009 102.2 0.000 0.000 6.136 0.009 102.2 0.000 O.QOU 6.401 0.009 102.2 0.000 0.000 6.670 0.009 ' 102.3 0.000 0.000 6.942 0.009 102.3 0.000 0.000 7.218 0.009 102.3 0.000 0.000 7.497 0.009 ' 102.4 0.000 0.000 7.780 0.009 102.4 0.000 0.000 8.066 0.009 102.4 0.000 0.000 8.356 0.009 102.5 0.000 0.000 8.649 0.009 ' 102.5 0.000 0.000 8.946 0.009 102.5 0.000 0.000 5.246 0.009 102.6 0.000 0.000 9.549 0.009 102.6 0.000 0.000 9.855 0.009 ' 7.02.6 0.000 0.000 10.16 0.009 102.7 0.000 0.000 10.48 0.009 102.7 0.000 0.000 10.79 0.009 102.7 0.000 0.000 11.11 C.009 102.8 0.000 O.OOp 11.43 0.009 102.8 0.000 0.000 11.76 0.009 102.8 0.000 0.000 12.09 0.009 102.9 0.000 0.000 12.42 0.009 102.9 0.000 0.000 12.75 0.009 102.9 0.000 0.000 13.09 0.009 ' 103.0 0.000 0.000 13.43 0.009 103.0 0.000 0.000 13.77 0.009 08104-windshadow western washingtoa Hydrology Model PAOJHCT RHPORT Developed Basin A - water puality Sand Filter Project Natae: 31te Address: City , Report Date Gage : Data Start : Data Snd . Precip Scale: NWHDf3 Version I~asin A-WQ 14920 SE Berry Valley RQ Yelm 7/29/2011 Olympia 1955/10/01 1999/09/30 0.80 Element plows To: Surface Iaterflow Grouadwatez Name Basin 1 Bypass: No Grounflwate r: No Pervious Land Qse Aczes A 8, Lawn, Flat .423 ImverVious Land Ose ~~~ Acres ROADS FLAT 0.219 ANALYSIS REBQLTS Plow Frequency Plow (CFS) 0701 2 Year . 0.0558 5 Year 0.0690 10 Year 0.0775 25 Yeaz 0.0879 50 Year ~ 0.0956 100 Year 0.1033 Flow Frequency Return Periods for Mitigated. POC ql Return Period Plow(cfa) 2 year 0.030606 5 year 0.045993 10 year 0.055307 25 year 0.065971 50 year 0.073144 100 year 0.079711 08104-Windehaflow Western Washington Hydrology Model PROJECT RHPORT Developed Basin A - water Quality Sand Pilt4r Project Name: Basin f!-Wp Site Address: 14920 SE Berry Valley Rd City . Report Date Gage . Data Start Data Hnd : Precip Scales WWHM3 version: Yelm 7/29/2011 Olympia 1955/10/01 1999/09/30 0.80 Element Flowe To: Surface lnterf low Groundwater Sand Filter 1, Name Sand Filter 1 Bottom Length: 20tt. Bottom Width Sft. Depth Sft. 31de elope l: 0 To 1 Bide elope 2: 0 To 1 Side sIOpe 3: 0 To I Side slope 4: 0 To 1 Filtration On Rydraulic conductivity 2 Depth of filter medium 2 Discharge Structure Riser Height: 2.5 Et. Riser Diameter: 12 in. NotchType Rectangular Notch Width 0.000 ft. Notch Height: 0.000 ft. Outlet 1 Outlet 2 OutletOutlet 3 ~wnsheam Connections 0 0 IJ tcilityType SendFlter Precpletbn Applied ro Faciily raUon ~ e A NeA l rf i4 ~ Quick Ffter_~ y po ; Qp ac y O tciliy Bottom Elevntion (tt) 100 tcility Dimensions lomLenpth PO Outlet Structure tom Widh 5 Risd HdgM pQ 2 5 -;~ ;dive Depth 0 Riser Diamelm(inl 12 ~SideSbpe Riser Type Nached --) tom 58e Stope p ~ .-- Nach Type redargular ~ hl Side Sbpe 0 Nach Heist (FlI r- J r S,de Sbpe ~~ NotcFr Widh 00 ~ _J ilUntion YES -~ Orilice DiometerHeight OMrvc 4auf~c ~ nAectiHyfin/hr) IZ - ~-{ Number (In) (Ft) (c(s) ~;:o ---~ o r~ +ma[erial depUfll) r2 ^~ _ 2 ~0 :-;'v =-; 0 el Volume filtralerXacra-ftl 24.633 3 ~p - J r~ J 0 d Volume TFrough Riser(acre(tl 2.501 d Vohane (acregll 2713A fifler StaageVoNme et Risd Head .012 xnl f]ered 90.78 Pand Increment 010 J ShowPandTable ~Tebk 08104-Windahadow Western Washiag ton Rydrology Nodel PROJECT REPORT Developed Basin A - Wetar Quality Sand Pilter Project Name: Basin A-WQ Site Addzess: 14920 SE Berry Valley Rd City Yelm ' Report Date c 7/29/2011 Gage Olympia Data Sta rt : 1955/10/01 Data Ead : 1999/09/30 ' Precip Scales 0.80 WWHM3 Ve rsion: Sand Filter Hydraulic Table 3taSe_{fqj Arse{acr) Vohalacr-ft) OacIIrg lc le) 7nlil t lcle 100.0 0.002 0.000 0.000 0.00 100.1 0.002 0.000 0.000 0.000 ' 100.1 0.002. 0.000 0.000 0.000 IDU.2 0.002 0.000 0.000 0.000 100.2 0.002 0.001 0.000 0.000 100.3 iUD.3 0.002 0.001 0.002 0.001 0.000 0.000 0.00 0.000 100.4 0.002 0.001 0.000 0.000 100.4 0.002 0.001 0.000 0.000 100.5 0.002 0.001 0.000 0.000 ' 100.6 0.002 0.007 0.000 0.000 100.6 0.002 0.001 0.000 0.000 100.7 0.002 0.002 0.000 0.000 ' 100.7 0.002 0.002 0.000 0.000 1.oo.B o.ooz o.ooz o.ooD o.ooo 1DD.B o.oaz o.002 0.000 0.000 104.9 0.002 0.002 0.000 0.000 100.9 0.002 0.002 0.000 0.000 101.0 0.002 0.002 0.000 0.000 101.1 0.002 0.002 0.000 0.000 ' 101.1 0.002 0.003 0.000 0.000 101.2 0.002 0.003 0.000 0.000 101.2 0.002 0.003 0.000 0.000 ID1.3 0.002 0.003 0.000 0.000 I 101.3 0.002 0.003 0.000 0.000 101.4 0.002 D.U03 0.000 0.000 101.4 0.002 0.003 0.000 0.000 ' 101.5 0.002 0.003 Q.000 0.000 101.6 0.002 0.004 0.000 0.000 101.6 0.002 0.004 0.000 0.000 ' 101.7 101.7 0.002 0.004 0.002 0.009 0.000 0.000 0.000 0.000 101.8 0.002 0.004 0.000 0.000 101.8 0.002 0.004 0.000 0.000 ' 101.9 0.002 0.009 0.000 0.000 101.9 0.002 0.004 0.000 0.000 1D2.U 0.002 0.005 0.000 0.000 102.E 0.002 0,005 0.000 0.000 ' 102.1 0.002 0.005 0. 000 0.000 102.2 0.002 0.005 O. D00 O.D00 102.2 0.002 0.005 0. 000 0.000 102.3 0.002 0.005 0. 000 0.000 102.3 0.002 0.005 0. 000 0.000 102.4 0.002 0.005 0. 000 0.000 102.4 0.002 0.006 0. 000 0.000 102.5 0.002 0.005 0. 000 0.000 102.6 0.002 0.005 0. 128 0.000 102.6 0.002 0.006 0. 361 0.000 102.7 0.002 0.006 0. 663 0.000 102.7 0.002 0.006 1. 020 0.000 102.8 0.002 0.006 1. 426 0.000 102.8 0.002 0.007 1. 874 0.000 102.9 0.002 0.007 2. 362 0.000 102.9 0.002 0.007 2. 886 0.000 103.0 0.002 0.007 3. 943 0.000 103.1 0.002 0.007 4. 033 0.000 103.1 0.007. 0.007 4. 653 0.000 103.2 0.002 0.007 5. 301 0.000 103.2 0.002 0.007 5. 978 0.000 103..3 0.002 0.008 6. 680 0.000 103..3 0.002 C.008 7. 409 C.000 103.4 0.002 0.008 8. 162 0.000 103.4 0.002 U.OOB 8. 939 0.000 103.5 C.002 0.008 9. 739 0.000 103.6 0.002 0.008 10 .56 0.000 103.6 0.002 O.ODfl 11 .41 0.000 103.7 0.002 0.00$ 12 .27 0.000 103.7 0.002 0.009 13 .16 0.000 103.8 0.002 0.009 19 .07 0.000 103.8 0.002 0.009 14 .99 0.000 103.9 0.002 0.009 15 .94 0.000 103.9 ~ 0.002 0.009 16 .91 0.000 104.0 0.002 0.009 17 .89 0.000 104.1 0.002 0.009 18 .89 0.000 109.1 0.002 0.009 19 .92 0.000 104.2 0.002 0.010 20. 95 0.000 lon.2 o.ooz o.olo zz. ol o.DOo 104.3 0.002 0.010 23. 09 0.000 109.3 0.002 0.010 24. 1@ 0.000 109.4 0.002 0.010 25. 28 0.000 104.4 0.002 0.010 26. 91 0.000 104.5 0.002 0.010 27. 55 0.000 104.6 0.002 0.010 28. 70 0.000 104.6 0.00?. 0.011 29. 87 0.000 104.7 0.002 0.011 31. 06 0.000 104.7 0.002 0.011 32. 26 0.000 104.8 0.002 0.011 33. 48 0.000 104.8 0.002 0.011 34. 71 0.000 104.9 0.002 0.011 35. 9G 0.000 104.9 0.002 0.071 37. 22 0.000 105.0 0.002 0.011 36. 50 0.000 105.1 0.002 0.012 39. 79 0.000 08104-windahadow western Washington Hydrology Model PROJECT ABPORT Developed Basis B - water Quality Sand Filter Pzojact Name: IIasin B-w0 Site Address: 14920 SE IIerry Valley Rd City Report Date Gage Data Start Data Ead s Precip Scales wWHM3 Version Yelm 7/28/2011 Olympia 1955/10/01 1999/09/30 0.80 Element Flows To: Surface Interflow Groundwater Name Basin 1 Bypass: No Groundwater: No Pervious La_a_d IIse_ A__c_rea A B, Lawn, Plat 3.419 Impervious Laad Dee Acres ROADS PLAT 1.088 ANALYSIS RHS IILTS Plow Frequency Plow(CFS) 0701 2 Year 0.2815 5 Year = 0.3547 10 Year = 0.4033 25 Year = 0.4652 50 Year 0.5118 100 Year 0.5590 Plow Pragvency Return Periods for Mitigated. POC #1 Return Period Flow(cfa 2 year 0.030606 5 year 0.045993 10 year 0.055307 25 year 0.065971 50 year 0.073144 100 year 0.079711 Western Washington Rydrology Model PROJECT REPORT Developefl Basin H - water Quality Sand Filter Project Name: Basin B-WQ Site Address: 14920 SE Berry Valley Rd City Yelm Report Date 7/28/2011 Gage Olympia Data Btart s 1955/10/Ol. Data Ead 1999/09/30 Precip Scale: 0.80 9PWHLt3 Veza ion: Element Flows Tos Surface Intezflow Groundwater Sand Filter 1, Name u^and Filter 1 Bottom Length: 110ft. Bottom Width Sft. Depth Sft. Side elope 1: p '1'o i 31de elope 2: 0 To 1 aide slope 3: J To I Side elope 4: 0 To 1 Filtration on Rydraulic conductivity 2 Depth of filter mndium 2 Discharge Struc_t_u_r_e Riser Height: 2.5 ft. Riser Diameter: 12 in. NotchType Rectangular Notch Width 0.000 ft. Notch Beight: O.U00 Et. ' Developed Baein B - Watez quality Sand Filter ' Facilit N y ame SandFiter 1 Outlet 1 Outlet 2 Outlet 3 ' Downstream Connections 0 Facility Type Sand Filter ' r PreapdaticnApplied to Faciky r a ' ' Ouick Filter Ev porationAppGelfo~aci6iy Faciliy Bottom Elevation (ft) 100 ' Facility Dimensions Bottom Ler~~h 1~ OuUet Structure Bottom Width 5 Riser Height ((t) 2.5 -?~ ' Effective Depth 5 Riser Diameler(m) 12 =.-~ i Lek Side Sbpe 0 R ser Type Notched .'-~ Bottom Side Slope 0 Notch Type Rectangular =-~ ' Right Side Slope 0 Notch Height (ftj fn --i i op Side Slope 0 Notch Width (ft) 0 -. ' Infiltration ,YES J Orifice Diameter Height OMax Hydraulic rorrductivity~nlMl ~ =; Number (In) (Ft) (cfs) ' 1 ~0 J (0 ~ -~-; 0 Filter material depth(it) ~ _-~ p rp~ ~'-J 0 7otatVc~kxrreFitratec~aae•11J 125.251 ~1 3 ~- •l ~~'~ U ' Total VolumeThrou¢iRiur(aae-ftj 10.0.56 Total Vo4rme (aaedt) 135.307 Fifer Staage Volume at Ricer Head .064 Percent F4tered gZ 57 Pand IncremeN 0.10 ' Show Pond Table Dpen Table -={ 1 08104-Windahadovr Western Washington Bydroloqy Model PROJRCT REPORT Developed Basin B - Water Quality Sand Pilter ' Project Name: Basin B-WQ Site Adflreas: 14920 SE Derry Valley Rd City relm ' Report Date c 7/28/2011 Oage Olympia Data Start s 1955/10/01 ' Data Rad s Pzecip Scale: 1999/09/30 0.80 WWHM3 Version: i Sand Pilter Hydraulic Table Stege(ft) Area Cacx) Volume(ecz-f[1 Dectug.(cte) Infiltf cfel 100.0 0.013 0.000 0.000 0.000 100.1 0.0.3 O.CU1 0.000 0.000 100.1 0.013 O.OU1 O.D00 0.000 100.2 0.013 0.002 0.000 0.000 100-2 0.013 0.003 O.DDO 0.000 100.3 0.0.].3 0.004 0.000 0.000 100.3 0-013 0.004 0.000 0.000 100.4 0.013 0.005 0.000 0.000 100.4 0.013 0.006 0.000 0.000 100.5 0.013 0.006 0.000 0.000 100.6 0.013 0.007 0.000 0.000 100.6 0.013 0.008 0.000 0.000 100.7 0.013 0.008 0.000 0.000 100.7 0.013 0.009 0.000 0.000 100.8 0.013 0.010 0.000 0.000 100.8 0.013 0.01] 0.000 0.000 100.9 0.013 0.011 0.000 0.000 100.9 0.013 O.D12 0.000 0.000 101.0 0.0].3 0.013 0.000 0.000 101.1 0.013 0.013 0.000 0.000 101.1 0.013 0.019 0.000 0.000 101.2 0.013 0.015 0.000 0.000 101.2 0.013 0.015 0.000 0.000 101.3 0.013 0.016 0.000 0.000 101.3 0.013 0.017 0.000 0.000 101.4 0.013 0.018 0.000 0.000 101.4 0.013 0.018 0.000 0.000 101.5 0.013 0.019 0.000 0.000 101.6 0.013 0.020 0.000 0.000 101.6 0.013 C.020 0.000 0.000 101.7 0.013 0.021 0.000 0.000 101.7 0.013 0.022 0.000 0.000 107.8 0.013 0.022 0.000 0.000 101.8 0.013 0.023 0.000 0.000 101.9 0.013 0.024 0.000 0.000 101.9 0.013 0.025 0.000 0.000 102.0 0.013 0.025 0.000 0.000 102.1 0.013 0.026 0.000 0.000 ' 102.1 0.013 0.027 0.000 0.000 102.2 0.013 O.U27 0.000 0.000 102.2 0.013 0.028 0.000 O.OOD 102.3 0.013 0.029 0.000 0.000 ' 102.3 0.013 0.029 0.000 0.000 102.4 0.013 0.030 0.000 0.000 102.4 0.013 0.031 0.000 0.000 ' LU2.5 0.013 0.032 0.000 0.000 102..6 0.013 0.032 0.128 0.000 102.6 0.013 0.033 0.361 0.000 102.7 102.7 0.013 0.013 0.034 0.034 0.663 1.020 0.000 0.000 102.8 0.013 0.035 1.426 0.000 102.8 C.013 0.036 1.874 0.000 102.9 0.013 0.036 2.362 0.000 ' 102.9 0.013 0.037 ?.886 0.000 103.0 0.013 0.038 3.443 0.000 1.03.1 0.013 0.039 9.033 0.000 ' 103.1 0.013 0.039 4.653 0.000 103.2 0.013 O.U40 5.301 0.000 103.2 0.013 C.041 5.97A 0.000 103.3 D.Ol3 0.04]. 6.680 0.000 ' 103.3 0.013 0.042 7.409 0.000 1G3.4 0.013 0.043 8.162 0.000 103.9 0.013 0.043 8.9:19 0.000 103.5 0.013 0.044 9.739 0.000 103.6 0.013 0.045 10.56 O.ODO 103.6 0.013 0.046 11.41 0.000 103.7 0.013 0.046 12.27 0.000 103.7 0.013 0.047 13.16 0.000 103.8 0.013 0.048 14.07 0.000 103.8 0.013 0.048 14.99 0.000 103.9 C.613 0.049 15.94 0.000 1.03.9 0.01.3 0.050 16.91 0.000 109.0 0.013 0.051 17.89 0.000 104.1 104.1 0.013 0.013 0.051 0.052 18.85 19.92 0.000 0.000 1C4.2 0.013 0.053 20.95 0.000 1C4.2 0.013 0.053 22.01 0.000 104.3 0.013 0.054 23.09 0.000 104.3 0.013 D.O55 '14.18 0.000 104.4 0.013 0.055 25.28 0.000 104.4 0.013 0.056 26.41 0.000 ' 104.5 0.013 0.057 27.55 0.000 104.6 0.013 0.058 28.7C 0.000 104.6 0.013 0.058 ?-9.87 0.000 104-7 0.013 0.059 31.06 0.00() 104.7 0.013 0.060 32.26 0.000 104.8 0.013 O.U60 33.48 0.000 104.8 0.013 0.661 34.71 0.000 104.9 0.013 0.062 35.96 0.000 109.9 0.013 O.U62 37.22 0.000 105.0 0.013 O.U63 38.50 0.000 ~ 105.1 0.013 0.069 }9.79 0.000 08105-Windahadow Nestern Washington Hydrology Model PROJHCT REPORT Developed Basin C - water Quality 9anfl Filter Hlement Flows To: Surface Iaterflow Groundwater Name ~ Basin 1 Bypass: No G?roundwater~ No Pervious Laad Ube ACrea A H, Lawn, Flat 5.591 ZmAeryious Land IIse Acres ROADS FLAT 1.369 ANALYSIS RBSIILTS Plow Frequency Return Periods for Mitigated. POC #1 Return Period Flow cfs) 2 year 0.030606 5 year 0.095993 10 year O.OS5307 25 year 0.065971 50 year 0.073149 100 year 0.079711 08105-Windahadow western Washington Hydrology Model PROJ$CT REPORT Developed Baein C - water Quality Sand Filter 8lemeat Flows To: Surface Interllow Groundwater Sand Filter 1, Nacoe Sand Pilter 1 Bottom Length: 130ft. Bottom Width Sf.t. Depth 5ft. Side slope 1: 0 To l Side slope 2: 0 To 1 Side slope 3: 0 To 1 Side slope 4: 0 To 1 Piltlation Oa Hydraulic conductivity s 2 Depth of filter medium 2 Discharge Structure Riser Height: 2.5 Yt_ Riser Diameter: :2 in. NotchT'ype Rectanyular Notch width 0.000 fL. Notch Height: 0.000 ft. Sand Outlet T Outlet 2 Outlet 3 ~wnsiream Connections I ~ 0 Cility Type (Sandfi~er PrecipilatbnApplied to Fadlily E ti d '~aciit~ QUICk Feller vapora on, to rality Bottom Elevation (ft) 100 cility Dimensions om Length t30 Outlet Structure om Width 5 Rrer Height ((1J 2.5 dive Depth 5 Riser Diemete(in) 12 -~-~ Side Slope p Riser Type Notched om Side Slope p Notch Type Rectangular ~-{ x Side Slope 0 Notch Height Ift) ~0 ::, Sde Slope 0 Notch Width (IQ (p Itration YES Orifice Diameter Height OMex iaulic Conductivdy(n/hd IZ -~ =! Number (Inj (Fl) (cfs) material depth(ft) ~- ~ 2 ~- J r- J 0 il Volune FAreted(acreflJ 155.988 3 ~_ "'.'~ ~- J 0 ! Vofune Ttuough Riser(acreJll 14.705 i Volume (acredt( 170.693 Fia Staege Vduma at Riser Head A75 ant Filtered 91.39 Pond I"~"~"t 0.10 Show Pond Table Open Ta61e 08105-Windahadow Western Washington Hydrology Model PROJECT REPORT Developed Baein C - Water Quality Saad Pilter Sand Pilter Hydraulic ?able Stage (ft) Apea,(acr) V olume(acr-ft) Uec_hrg (c ta)_ Infil t (c ta) 100.0 0.015 0.000 0.000 0.000 100.1 0.015 0.001 0.000 0.000 Ioo.l o.ols D.DO2 0.000 0.000 100.2 0.015 0.002 G.000 0.000 100.2 0.015 0.003 0.000 0.000 100.3 0.015 0.004 0.000 0.000 100.3 0.015 0.005 0.000 0.000 100.4 0.015 0.006 O.D00 0.000 100.4 0.015 0.007 0.000 0.000 100.5 0.015 0.007 0.000 0.000 100.6 0.015 O.U08 O.ODO 0.000 200.6 U.O15 0.009 0.000 0.000 100.7 O.U15 0.010 0.000 O.OOD 100.7 0.0]5 0.011 0.000 0.000 2C0.8 O.O1S 0.012 0.000 0.000 100.8 0.015 0.012 0.000 0.000 200.9 0.015 0.013 0.000 0.000 100.9 0.015 0.014 0.000 0.000 101.0 0.015 0.015 0.000 0.000 101.1 0.015 0.016 0.000 0.000 101.1 0.015 0.017 0.000 0.000 101.2 0.015 0.017 0.000 0.000 101.2 0.015 0.018 0.000 0.000 101.3 0.015 0.019 O.D00 0.000 101.3 0.015 0.020 0.000 0.000 101.4 0.015 0.021 0.000 0.000 101.4 0.015 0.022 O.ODU 0.000 101.5 0.015 0.022 0.000 0.000 101.6 U.G15 0.023 0.000 0.000 101.6 0.015 0.024 0.000 0.000 101.7 0.015 0,025 0.000 0.000 101.7 0.015 0.026 0.000 0.000 701.8 0.015 0.027 0.000 0.000 101.8 0.015 0.027 0.000 0.000 101.9 0.015 0.028 0.000 0.000 101.9 0.0]5 0.029 0.000 0.000 102.0 0.015 0.030 0.000 0.000 102.1 0.015 0.031 0.000 0.000 102.1 0.015 0.032 0.000 0.000 102.2 0.015 0.032 0.000 0.000 102.2 0.015 0.033 0.000 0.000 102.3 0.015 0.034 0.000 0.000 102.3 0.015 0.035 0.000 0.000 102.4 0.015 0.036 O.ODO 0.000 102.4 0.015 0.036 0.000 0.000 1 lD2.s o.ols o.n37 D. oDD D.ooo 102.6 C.U15 0.038 0. 128 0.000 102.fi 0.01.5 0.039 0. 3b1 0.000 102.7 0.015 0.040 0. 663 0.000 102.7 0.015 0.091 1. 020 0.000 102.8 0.015 0.041 1. 426 0.000 102.8 0.015 0.092 1. 874 0.000 ' 102.9 0.015 C.093 2. 362 0.000 102.9 0.015 0.044 2. 886 0.000 103.0 0.015 0.045 3. 443 0.000 ' 103.1 0.015 0.046 9. 033 0.000 103.1 0.015 0.046 4. 653 0.000 103.2 0.015 0.047 5. 301 0.000 103.2 103.3 0.015 0.015 0.048 0.049 5. 6. 978 680 0.000 0.000 103.3 0.015 0.050 7. 409 0.000 103.4 0.015 0.051 8. 162 0.000 103.4 0.015 0.051 8. 939 0.000 ' 103.5 0.015 O.U52 9. 739 0.000 103.6 0.015 0.053 10 .56 0.000 103.6 0.015 0.059 11 .41 0.000 ' 103.7 0.015 0.055 12 .27 0.000 103.7 0.015 0.056 13 .16 0.000 103.8 0.015 O.D56 19 .07 0.000 103.8 0.015 0.057 19 .99 0.000 103.9 0.015 0.058 15 .99 0.000 103.9 0.015 O.C59 16 .91 0.000 104.0 0.015 0.060 17 .89 0.000 ' 109.1 0.015 0.061 18 .89 0.000 1C4 .: 0.015 0.061 19 .92 0.000 109.2 0.0].5 0.062 20 .95 0.000 104.2 0.015 0.063 22 .01 0.000 ' 104.3 0.015 0.054 23 .09 0.000 104.3 0.015 0.065 24 .18 0.000 104.4 0.015 0.065 25 .28 0.000 ' 104.9 0.015 0.066 26 .41 0.000 104.5 0.0].5 0.067 27 .55 0.000 104.6 0.015 0.068 28 .70 0.000 ' 109.6 104.7 0.015 0.015 0.069 0.070 29 31. .87 06 0.000 0.000 104.7 0.015 0.070 32. 26 0.000 104.8 0.015 0.071 33. 48 O.OOD ' 104.8 0.015 0.072 34. 71 0.000 104.9 0.015 0.073 35. 96 0.000 104.9 0.015 0.079 37. 22 0.000 105.0 0.015 0.075 38. 50 0.000 ^ 105.1 0.015 0.075 39. 79 0.000 08105-Windshadow Western Washington Hydrology Model PROJBCT RBPORT Desiga Sasin D - Water Quality Sand Filter Project Name: basin D-WQ 31te Addzess: 14920 SE IIerry Valley Rd City Yelm Report Date 7/29/2011 Gage Olympia Data Start 1955/10/01 Data Hnd 1999/09/30 Pzecip Scales 0.80 WWRM3 Versions Slement Flows To: Surface Interflow Groundwater Name : Darin 1 Bypass: No CrouadWater: No Pervious Laa_d Dse Acres A 8, Lawn. Plat 2.26 Impervious Land IIse Acres ROADS FLAT p,2~ ANALYSIS RRSDLTS Flow Prequency Return Periods for Mitigated. POC ql Return Period Flow(cfa} 2 year 0.030606 5 year O.Oh5993 10 year 0.055307 25 year 0.065971 50 year 0.073144 100 year 0.0'!9'711 08105-Windshadow Western Washington Hydrology Model PROSBCT R&PORT Design Basin D - Water puality Sand Filter project Name: Basin L-WQ Site Aflflreas: 14920 SE Berry Valley Rd City Report Date Gage Data Start Data 8nd Precip Scale: WwHra3 version Yelm 7/29/2011 Olympia 1955/1D/O1 1999/D9/30 0.80 glement Plows To: Surface Interflow Gzouaflwatez Sand Filter 1. N2~me Sand Filter 1 Bottom Length: 25ft. Bottom Width Sft. Depth 5ft. Side elope l: D To 1 Side slope 2: 0 To 1 Sifle slope 3: 0 To 1 Side slope 4: 0 To 1 Filtration 6n Hydraulic conductivity 2 Depth of filter medium 2 Discharge Structure Risez Heigh[: 2.5 ft. Riser Diameter: 12 in. NotchType Rectangular Notch Width 0.000 Et. Notch Height: 0.000 ft. r I peatern wachingtoa Hyflrology MoQel PROJHCT RHPORT m. Rac/,. n _ ve«o~ n..~l; «., aao.r vi Outlet 1 2 Ou Ne t OuNe t 3 rwnstream Connections r - - ~ ~ ( - ~ 0 ~ ~~ tcility Type Sand Firter PreciprtetionApplied to FeaTdy (]UICk Filter ~„va~nt G~App~dWi=~c%lity~ icility Bottom Elevation (tt) 100 icility Dimensions toml.ength~ Outlet Structure tom Width 5 Riser Height (ItJ 25 J rctive Depth 5 Risa Diameter(in) t2 Side Slope p Riser Type Notchad J tom Side Slope 0 Ndch Type ReUar~ igutar -; ~ ht Sde Slope Notch Height (10 i0 `-~ i Side Slope p ~ Notch Width (ftJ IO iltretion AYES =! Orifice Diameter Height OMex hadic CoMuctivity(rJhr) ~2 J Number (In) (Ft) (ds) 1 ~ J r- ~; fl .r material de~th(fQ ~ ~ 2 r- ~ r~- J Q ~ al Volume FiltratedJacre•It) 27.927 ~~ J U 9 ~0 `~ ~I Volume Through Risa(acre•hJ 2423 ~ Volume (acredtl 30.349 Filter Storage VoMne at Riser Hced .015 :ant Filtered 92 02 Pond Increment 0.10 _J Show Pond Table Open Table -:-~ ~. 1 08105-Wiadsbadow Nestern washingtoa Hydrology Model PROJHCT RHPORT Design Basin D - Watar Quality 3anfl Filter Project Name: Basin D-WQ Sites Address: 14920 SE Berry Valley Rd city Report Date Gage Data Start Data Hnd Pzecip Scale: WWHM3 Version Yelm 7/29/2011 Olympia 1955/10/01 1999/09/30 0.60 Sand Filter Hydraulic Table Bteae(Et) AzeaSa_cp) Vol ume (act-ttl Dachra (cfol SnEilt (cEe? 100.0 O.OO.i 0.000 O.D00 0.000 1.00.1 0.003 ~"~-000 0.000 0.000 L00.1 0.003 0.000 0.000 0.000 100.2 0.003 0.000 0.000 0.000 100.2 0.003 0.001 0.000 0.000 1C0.3 O.C03 0.001 0.000 0.000 100.3 0.003 O.U01 O.D00 0.000 100.4 0.003 0.001 0.000 0.000 100.4 0.003 O.OCI 0.000 0.000 100.5 0.003 0.001 0.000 0.000 100.6 0.003 0.002 0.000 0.000 100.6 0.003 0.002 0.000 0.000 100.7 0.003 0.002 0.000 0.000 100.7 0.003 0.002 O.ODO 0.00() 100.8 0.003 0.002 0.000 0.000 100.8 0.003 0.002 0.000 0.000 100.9 0.003 0.003 0.000 0.000 100.9 0.003 0.003 0.000 0.000 101.0 0.003 0.003 0.000 0.000 101.1 0.003 0.003 0.000 O.D00 101.1 0.003 0.003 0.000 0.000 101.2 0.003 0.003 0.000 0.000 101.2 0.003 0.004 0.000 0.000 101.3 0.003 0.004 0.000 0.000 101.3 0.003 0.004 0.000 0.000 101.4 0.003 0.004 0.000 0.000 101.4 0.003 0.004 0.000 0.000 101.5 0.003 0.004 0.000 0.000 101.6 0.003 0.004 0.000 0.000 101.6 0.003 0.005 0.000 0.000 101.7 0.003 0.005 0.000 0.000 101.7 0.003 0.005 0.000 0.000 101.8 0.003 0.005 0.000 0.000 101.8 0.003 0.005 0.000 0.000 101.9 0.003 0.005 0.000 0.000 101.9 0.003 0.006 0. 000 0.000 102.0 0.003 0.006 0. 000 0.000 102.1 0.003 0.006 0. 000 0.000 102.1 0.003 0.006 q. 000 0.000 102.2 0.003 0.006 D. OOD 0.000 102.2 0.003 0.006 0. 000 0.000 102.3 0.003 0-007 0. 000 0.000 102.3 0.003 0.007 0. 000 0.000 102.4 0.003 0.007 0. 000 0.000 ID2.4 n.oo? n.oo7 D. ooo o.ooo 102.5 O.U03 0.007 0. 000 0.000 102.6 0.003 0.007 0. 128 0.000 102.6 0.003 0.007 0. 361 0.000 102.7 0.003 0.008 0. 663 0.000 102.7 0.003 0.006 1. 020 0.000 102.8 0.003 0.008 1. 426 0.000 102.8 0.003 G.ODB 1. 679 0.000 102.9 0.003 0.008 2. 362 O.OOD 102.9 0.003 0.008 2. 886 0.000 103.0 0.003 0.009 3. 443 0.000 103.a 0.003 0.009 9. 033 0.000 103.1 0.003 0.009 4. 653 0.000 103.2 0.003 O.OU9 5. 301 0.000 103.2 U.U03 0.009 5. 978 0.000 103.3 0.003 0.009 6. 680 0.000 103.3 0.003 0.010 '7. 409 0.000 103.4 0.003 0.010 8. 162 0.000 103.4 0.003 0.0]0 8. 939 0.000 103.5 0.003 0.010 9. 739 0.000 103.6 0.003 0.010 10 .56 0.000 1U3.6 O.UU3 O.OIO II .4i 0.000 103.7 O.U03 0.011 12 .27 0.000 103.7 0.003 0.011 13 .1.6 0.000 103.8 0.003 0,011 14 .07 0.000 103.8 0.003 0.011 14 .99 0.000 103.9 0.003 0.011 15 .94 0.000 103.9 0.003 0.011 16 .91 0.000 104.0 0.003 0.011 17 .89 0.000 104.1 0.003 0.012 18 .89 0.000 104.1 0.003 0.011. 19 .92 0.000 704.2 0.003 0.012 20 .95 0.400 104.2 0.003 O.U12 22 .01 0.000 104.3 O.OU3 O.O:L2 23 .09 0.000 104.3 0.003 0.012 24 .18 0.000 104.4 0.003 0.013 25 .28 0.000 104.4 O.OU3 0.013 26 .41 0.000 104.5 0.003 0.013 27 .55 0.000 104.6 0.003 0.013 28 .70 0.000 104.6 0.003 0.013 29 .87 0.000 104.7 0.003 0.013 31 .06 0.000 104.7 0.003 0.014 32 .26 0.000 104.8 0.003 0.019 33 .48 0.000 104.8 0.003 0.014 34 .71 0.000 104.9 0.003 0.014 35 .96 0.000 104.9 0.003 0.014 37 .22 0.000 105.0 0.003 0.019 38 .50 0.000 105.1 0.003 0.015 39 .79 0.000 08105-wiadehadow Western Washington Eydrology Model PROJECT RSPORT Developed Basin S - Water Quality 3aad Filter Project Name: Basin E-WQ Site Address: 14920 SE Berry Valley Rd City Yelm Report Date 8/2/2011 Gaga Olympia Data Start 1955i.iO/O1 Data End 15y9/09/30 Precip Scale: 0.80 WWHM3 Version: Name Basin 1 Bypass: No Groundwater: No Pervious Land Vse Acrea A B, Lawn, Flat 6.166 Impervious Land II_s_e_ Acrea ROADS FLAT 1.196 ANALYSIS RSSLJLTS Flow Frequency Retura Periods for Mitigated. POC #1 Retura Period Flow_(cf s) 2 year 0.030606 5 year 0.045993 10 year 0.055307 25 year 0.065971 50 year 0.073144 100 year 0.079711 08105-Windahadow Western Washington Hydrology Model PROJHCT RBPORT Developed Baeia 8 - Water Quality Saad Pilter Project Name: Basin E-WQ Site Address: 14920 SE Derry Valley Rd City Yelm Report Date 8/2/2011 Gage Olympia Data Start 1955/10/01 Data Bnd 1999/09/30 Precip Scale: 0.80 WWHM3 Versioa: Element Flowa To; Surface interfiow Groundwater Sand Filter 1, Name Sand Filter 1 Bottom Length: 120ft. Bottom Width Sft. Depth Sft. Side elope 1: 0 To 1 Side elope 2: 0 To 1 Side slope 3: 0 To 1 Side elope 4: 0 To 1 Fi2trati on On Hydraulic conductivity 2 Depth of filter medium : 2 Discharge Structure Riser Height: 2.5 ft. Riser Diameter: 12 in. Notchlype Rectangular Notch Width 0.000 ft. Notch Height: 0.000 Et. Developed Basra 8 - Nester Quality Sand Filter UUOet 1 Outlet 2 Outlet 3 rrmstream Connections J ~ ~~ 0 cility Type Sand Fitter PrecipitationAppiedtoFacity Quick Filter cility Botfom Elevation (ft) too cility Dimensions om Length 120 Outlet SUucture om Widh ~ Riser Height p1J 2.5 dive Depth 5 Rises DiameteQnJ 12 Side Slope p Riser Type Notched om Side Sbpe p Notch Type Rectangular -;-~ e Side Sbpe 0 Nach Heght JFtJ r-- _1 Side Slope p Notch Width (ftJ ~p - =: Itretion AYES =; - Orifice Diameter Height OMax aulicl:orductiv~(in/hr) ~ ~ Number (In) (Ft) (cfs) - mataiddepth(R) =; r 2 ~ 'Ji ~~ -_-~ 0 I Volume FilUated(aaefl) 137.848 3 ~ "~ ~- J 0 I Volume Through Risa(acrettJ 11.712 I Voume (aae•Hj tqS 56 Fdta Storage Votuma at Rica Head .070 ant FAaed 92.17 Pond Inaemenl 0.10 '-Ir Show Pand Table Open Ta61e ~{ 1 1 08105-Windshadow Western Washington Hydrology Model PROJECT REPOR2 Developed Hasia B - Water Quality Saad filter ' Project Name: Basin E-WQ Site fddreee: 14920 SE Berry Valley Rd City Yelm Report Date 8/2/2011 ' Gage Olympia Data Start 1955/10/01 Data 8nd 1999/09/30 t Pzecip Scale: 0.80 WWHM3 Version: Sand Filter Hydraulic Table BtaveStt) Area (acr) Volume(acr-ft) Dachzg (C [al Snfil t (cfej, 100.0 0.019 0.000 0.000 0.000 100.1 0.019 0..001 0.000 0.000 100.1 0.014 0.002 0.000 0.000 100.2 0.014 O.GU2 0.000 0.000 100.2 0.014 0.003 0.000 0.000 100.3 0.014 0.004 0.000 0.000 100.3 0.014 0.005 0.000 0.000 100.4 0.014 0.005 0.000 0.000 100.4 0.014 0.006 0.000 0.000 100.5 0.019 0.007 0.000 0.000 100.6 0.014 0.008 0.000 0.000 100.6 0.014 0.008 0.000 0.000 100.7 0.014 0.009 0.000 0.000 100.7 0.014 0.010 0.000 0.000 100.8 0.014 0.011 O.U00 0.000 100.8 0.014 0.011 0.000 0.000 100.9 0.014 0.012 0.000 0.000 100.9 0.014 0.013 0.000 0.000 101.0 0.014 0.014 0.000 0.000 101.1 0.014 0.015 0.000 0.000 101.7 0.014 0.015 0.000 0.000 101.2 0.014 0.016 0.000 0.000 101.2 0.019 0.017 0.000 0.000 101.3 0.014 0.018 0.000 0.000 101.3 0.014 0.018 0.000 0.000 101.9 0.014 0.019 0.000 0.000 101.9 0.014 0.020 0.000 0.000 101.5 0.014 0.021 0.000 0.000 101.6 0.014 0.021 0.000 0.000 101.6 0.019 0.022 0.000 0.000 101.7 0.014 0.023 0.000 0.000 101.7 0.019 0.029 0.000 0.000 101.8 0.019 0.024 0.000 0.000 101.8 0.014 0.025 0.000 0.000 101.9 0.014 0.026 0.000 0.000 101.9 0.019 0.027 0.000 0.000 ~ 102.0 0.014 0.028 0. 000 0.000 102.1 0.010 o.o2e o. ooo o.ooo 102.1 0.010 0.029 0- 000 0.000 ' 102.2 0.014 0.030 0. 000 0.000 102.2 0.014 0-031 0. 000 0.000 102.3 0.014 0.031 0. 000 0.000 102.3 0.014 0.032 0. 000 0.000 102.4 0.014 0.033 0. 000 0.000 102.4 0.014 0.034 0. 000 0.000 102.5 0.014 0.034 0. 000 0.000 ' 102.6 0.019 0.035 0. 128 0.000 102.6 0.014 0.036 0. 361 0.000 102.7 0.014 0.037 0. 663 0.000 ' 102.7 0.014 0.037 1. 020 0.000 102.8 0.014 0.038 1. 926 0.000 102.8 0.0].4 0.039 1. 874 0.000 ' 102.9 ]02.9 0.0]4 0.014 0.040 0.041 2. 2. 362 886 0.000 0.000 IC3.0 0.014 0.041 3. 443 0.000 103.1 0.0.14 0.042 4. 033 0.000 103.1 0.014 0.043 9. 653 0.000 103.2 0.014 0.094 5. 301 0.000 103.2 0.014 0.044 5. 978 0.000 _03.3 0.014 0.095 6. 580 0.000 ' 103.3 0.014 0.046 7. 409 0.000 '_03.4 0.014 0.047 8. 162 0.000 103.4 0.014 0.04'1 8. 939 0.000 103.5 0.014 0.048 9- 739 0.000 ' 103.6 0.014 0.049 10 .56 0.000 103.6 0.014 0.050 11 .41 0.000 ]03.7 0.014 0.051 12 .27 0.000 t :03.7 0.014 0.051 13 .16 0.000 103.8 0.014 0.052 14 .07 0.000 103.8 0.014 0.053 14 .99 0.000 103.9 0.014 0.054 15 .94 0.000 ' IC3.9 0.014 0.054 16 .91 0.000 ]04.0 0.01-0 0.055 17 .69 0.000 '_04.1 0.014 0.056 18 .89 0.000 104.1 0.014 0.057 19 .92 0.000 !04.2 0.014 0.057 20 .95 0.000 lna.z 0.014 o.0se z2. o1 0.000 t 1.04.3 104.3 0.014 0.014 0.059 0.060 23. 24. 09 18 0.000 0.000 104.4 0.014 0.060 25. 28 0.000 104.4 0.014 0.061 26. 41 0.000 t 104.5 0.014 0.062 27. 55 O.D00 104.6 0.014 0.063 28. 70 0.000 109.6 0.014 0.064 29. 87 0.000 104.7 0.014 0.064 31. 06 0.000 ' 104.7 0.014 0.065 32. 26 0.000 104.8 0.014 0.066 33. 48 0.000 104.8 0.014 0.067 34. 71 0.000 104.9 0.014 0.067 35. 96 0.000 ' 104.9 0.014 0.068 37. 22 0.000 105.0 0.014 0.069 38. 50 0.000 105.1 0.014 0.070 39. 79 0.000 08105-windahadow Nastara MasLiagton Hydrology lbdel PROJECT REPORT Developed Baeia F - water Quality Sand Filter Project Names Sasin F-HQ 91te Address: 14920 SE Berry Valley Rd City Report Date : Oage : Data Start Da[a Sad . Pzecip Scale: wwHM3 version Yelm 8/2/2011 Olympia 1955/10/01 1999/09/30 0.80 Element Plows To: Surface Iaterflow Orouadwater Name : Basin 1 Bypass: No Orouadwater: No Parvioua Laad IIsa Acra_a A 8, Lava, Flat 6.316 Impervious Land Dee Acru ROADS FLAT 1.913 ANALYBIB REBIILTS llow Frequency Return Periods for Mitigated. POC !C1 Return Period ilow~cfs) 2 year 0.030606 5 year 0.045993 10 year 0.055307 ZS year 0.065971 50 year 0.073144 100 year p.079711 08105-Wiadsbadow Western Mashiagton Hydrology Nodel PHOJBCS REPORS Developed Basin T - Water Quality Band palter Project Name: Site Address: City . Report Date Gaga : Data Stert : Data End s Precip Scala: MWH243 Version: Basin F'~WQ 14920 SE He rry Valley Rd Yelm 8/2/2011 Olympia 1955/10/01 1999/09/30 0.80 Element plows Tot Surface Znterflow 6rouadwater ;and Falter 1. Name Sand Fit CPr I Bottom Lengtb: 190f t. Bottom Width Sft. Depth Sft. Bide elope is 0 To L Hide elope 2s 0 To 1 Hide slope 3: 0 To 1 Bide slope 4: 0 To 1 pileration On Hydraulic conductivity 2 Depth of filter medium : 2 Discharge Structure Riser Heights 2.5 ft. Riser Diameters 12 in. NotchType Rectangular Noteh Nidth 0.000 ft. Notch Height: 0.000 ft. Developed Basin P - taster Quality Sand Palter Outlet 1 Outlet 2 Outlet 3 ~wnstream Connections 0 0 0 tcility Type Sand Fiter Pret:ipita6onAppfad to Faclity ~~ ` QuIGk Flter ~ ~ }~ rcility Bottom Elovetion (tt) 100 idlity Dimensions lomLerglh 130 OUtlelStructure tom Width S Raer Height (ftJ 25 active Depth ~ Riser Diameter(ini 12 Side Slope 0 Riser Type Notched '=-~ !om Side Slope p Notch Type Rectangular J hl Side Slope 0 Notch Heigh (R) r- _I Side Slape 0 Notch Width (f1) Ip filtration wE5 -=? Orifice DiameterHeighl OMax haukConducuvity[irvhrl ~-=; Number (Inj (Ft) (cfs) r material deplh(rt) ~2 ~"~ 2 ~' J ~-,~ 0 sl VoMNne F16eted(aae-fQ 219.808 3 ~- ~ CU '~ 0 el VoYme Though Riier(ecre•fti 18.24 d Volume (acre-ft) 238.048 Filter Staege Volume at Rater Head .110 :ent FBtered 92 34 Pond Increment 0,10 ~-{ Show Pond Table Open Table J 08105-windehadoet Neetern waebiagton Rydrology Model PAOJHCT RBPORT Developed Baeia F - water Quality Saad Filter Project Name: Site Addreea: City Report Date Gage Data Start Data Hnd Precip Scale: WwRM3 vereioa Bain F-WQ 19920 Sfi Herry Valley Rd Yelm 8/2/2011 Olympia 1955/10/01 1999/09/30 0.80 6aad Filter Rydraulic Table 9taae(t t) ]~rsafaez) V a l_ume (acr -ftl Dechzg (c La) Infil tlc i9)_ 100.0 0.022 0.000 0.000 0.000 100.1 0.022 0.001 0.000 0.000 100.1 0.022 0.002 0.000 0.000 100.2 0.022 0.004 0.000 0.000 100.2 0.022 0.005 U.000 0.000 100.3 0.022 0.006 0.000 0.000 100.3 0.022 0.007 0.000 0.000 100.4 0.022 0.008 0.000 0.000 100.4 0.022 0.010 0.000 0.000 100.5 0.022 0.011 0.000 0.000 100.6 0.022 0.012 0.000 0.000 100.6 0.022 0.013 0.000 0.000 100.7 0.022 0.015 0.000 0.000 100.7 0.022 D.O16 0.000 0.000 loo.e o.ozz 0.017 o.oao o.ooo 100.8 0.022 C.O16 0.000 0.000 100.9 0.022 0.019 0.000 0.000 100.9 0.022 0.021 0.000 0.000 101.0 0.022 0.022 0.000 0.000 101.1 0.022 0.023 0.000 0.000 101.1 0.022 0.024 0.000 0.000 101.2 0.022 0.025 0.000 0.000 101.2 0.022 0.027 0.000 0.000 101.3 0.022 0.028 0.000 0.000 101.3 0.022 0.029 0.000 0.000 101.9 0.022 0.030 0.000 0.000 101.4 0.022 0.032 O.OOD 0.000 101.5 0.022 0.033 0.000 0.000 101.6 0.022 0.034 0.000 0.000 101.6 0.022 0.035 0.000 0.000 101.7 O.D22 0.036 0.000 0.000 101.7 0.022 0.038 0.000 0.000 101.8 0.022 0.039 0.000 0.000 101.8 0.022 0.040 0.000 0.000 101.9 0.022 0.041 0.000 0.000 101.9 0.022 0.092 0.000 0.000 102.0 0.022 0.094 0.000 0.000 102.1 0.022 0.045 0 .000 0.000 102.1 0.022 0.046 0 .000 0.000 101..2 0.022 0.047 0 .000 0.000 102.2 0.022 0.048 0 .000 0.000 102.3 0.022 0.050 0. 000 0.000 102.3 0.022 U.O51 0. 000 0.000 102.4 0.022 0.052 0. 000 0.000 102.5 0.022 0.053 0. 000 0.000 102.5 0.022 0.055 0. 000 0.000 102.6 0.022 0.056 0. 128 0.000 102.6 O.D22 0.057 0. 361 0.000 102.7 0.022 0.058 0. 663 0.000 102.7 0.022 0.059 1. 020 0.000 102.8 0.022 0.061 1. 926 0.000 102.8 0.022 0.062 1. 674 0.000 102.9 0.022 0.063 2. 362 0.000 102.9 0.022 0.064 2. 886 0.000 103.0 0.022 0.065 3. 493 0.000 103.1 0.022 0.067 4. 033 0.000 103.1 0.022 0.068 9. 653 0.000 103.2 0.022 O.U69 5. 301 0.000 103.2 0.022 0.070 5. 976 0.000 103.3 0.022 0.071 6. 680 0.000 103.3 0.022 0.073 7. 409 0.000 103.4 0.022 0.074 8. 162 0.000 103.4 0.022 0.075 8. 939 0.000 103.5 0.02.2 0.076 9. 739 0.000 103.6 0.022 0.078 10 .56 0.000 103.6 0.022 0.079 11 .41 0.000 103.7 0.022 0.080 12 .27 O.D00 103.7 0.022 0.081 13 .16 0.000 103.8 0.022 0.082 ]9 .07 0.000 103.8 0.022 0.089 14 .99 0.000 103.9 0.022 0.085 15 .94 0.000 103.9 0.022 0.066 16 .91 0.000 104.0 0.022 0.087 17 .89 0.000 109.1 0.022 0.088 18 .89 0.000 104.1 0.022 0.090 19 .92 0.000 104.2 0.022 0.091 20 .95 0.000 104.2 0.022 0.092 22 .01 0.000 104.3 0.022 0.093 23 .09 0.000 104.3 0.022 0.095 24 .18 0.000 109.4 0.022 0.096 25 .26 0.000 104.4 0.022 0.097 26 .41 0.000 104.5 0.022 0.098 27 .55 0.000 109.6 0.022 0.099 28 .70 0.000 104.6 0.022 0.101 29 .87 0.000 104.7 0.022 0.102 31 .06 0.000 104.7 0.022 0.103 32 .26 0.000 104.8 0.022 0.104 33 .48 0.000 104.8 0.022 0.105 34. 71 0.000 109.9 0.022 0.107 35 .96 0.000 104.9 0.022 0.106 37 .22 0.000 lOS.U 0.022 0.109 38. 50 0.000 105.] 0.022 0.110 39. 79 0.000 Waterworks HMS Report Proieci: Conveyance FAday, July 29, 2011 Papa i 08104Windshadow SBUH Conveyance Storm Drainage Calculations Developed Basin A Project Precips i2 Yri 2.00 in ie Y-i 2.50 in [10 yrJ 3.00 In [25 Y<i 3.50 in [100 yr) 4.00 in [6 mai 1.28 in Drainage Area: Dev~A Hyd Method: SBUH Hyd Loss Method: SCS CN Number Peak Factor: 484.00 SCS Abs: 020 Storm Dur 24.00 hrs Area CN TC Pervious 0.4230 ac 50.00 0.16 hrs Impervious 0.2190 ac 98.00 0.02 hrs Total 0.6420 ac SupporNrlg Data: Pervbus CN Data: Landscaping Type A -Soils 50.00 0.4230 ac Impervious CN Data: 37' road + 5' SW 98.00 0.2190 ac Pervious TC Data: Flow type: Description: Length: Slope: Coeff. Travel Time Sheet flow down landscaping 50.00 ft 1.00% 0.1500 9.39 min Impervlous TC Data: Flow type Description: Length: Slope: Coeff: Travel Time Sheet road to CB 18.00 ft 2.00% 0.0110 0.39 min Channel storm pipe 220.00 tt 1,00% 42.0000 0 87 min TC of 1.26 min < 5 min, program will use a . tc of 5 min in computations. 100 yr Flow Time Volume Summary: 0.2148 cfs 7.83 hrs 3505.35 ci - 0.0805 acft BasinlD Peak Q Peak T Peak Vol Area Method Rainrype Event --- (ds) (hrs) (ac-ft) ac /Loss Dev-A 0.06 7.83 0.0194 0.64 SBUH/SCS TYPEIA 6 mo Dev-A 0.10 7.83 D 0.0324 0.64 SBUH/SCS TYPEIA 2 yr ev-A 0.19 7.83 D 0.0665 0.64 SBUHISCS TYPEtA 25 yr ev-A 0.21 7.83 0.0805 0.64 SBUH/SCS TYPEtA 100 yr vJaterVYorks HMS Report Friday, Jury 28. 2011 Protect Conveyance Paoe 2 08104Windshadow SBUH Conveyance Storm Drainage Calculations Developed Basin B Project Preclps [2 yr) 2.00 In [5 yrJ 2.50 in [10 yrj 3.00 in [25 yrJ 3.50 in (100 yrJ 4.00 in [6 moJ 1.28 in Drainage Area: Dev-B Hyd Method: SBUH Hyd Loss Method: SCS CN Number Peak Factor: 484.OD SCS Abs: 0.20 Storm Dur 24.00 hrs Area CN TC Pervious 3.4190 ac 50.00 0.16 hrs Impervious 1.0880 ac 98.00 0.08 hrs Total 4.5070 ac Supporting Data: Pervious CN Data: Landspping-Type A Soils 50.00 3.4190 ac Impervious CN Data: 37' road + 5' SW 98.00 1.0880 ac Pervious TC Data: Flow type: Description: Length: Sbpe: Coeff: Travel Time Sheet now down landscaping 50.00 fl 1.00% 0.1500 9.39 min Impervious TC Data: Flow type: Description: Length: Sbpe: Coeff: Travel Time Sheet road to CB 18.00 ft 2.00% 0.0110 0.39 min Channel storm pipe 1046.00 ft 1.00% 42.0000 4.15 min TC of 4.54 min < S min, program will use a tc of 5 min in computations. 100 yr Flow Time Volume Summary: 1.0063 cfs 7.83 hrs 19006.31 cf - 0-4363 acft BasinlD Peak Q Peak T Peak Vol Area Method Raintype Event - (cfs)_ (hrs) (ac-ft) ac (Loss Dev-B 0.29 8.00 0.0965 4.51 SBUHlSCS TYPEIA 6 mo Dev-8 0.48 7.83 0.1609 4.51 SBUH/SCS TYPEIA 2 yr Dev-B 0.88 7.83 0.3519 4.51 SBUH/SCS TYPEIA 25 yr Dev-B 1.01 7.83 0.4363 4.51 SBUH/SCS TYPEIA 100 yr D -~ waterwake HMS Repon FndaY, JWy 78, 2011 Profed: Conveyance Panty :i 08104Windshadow SBUH Conveyance Storm Drainage Calculatlans Developed Basin C Protect Precips (2 Yri 2.00 in (5 nl 2.50 in (10 rd 3.00 In (25 Yrl 3.50 in (1~ Yrl 4.00 In [6 mo] 1.28 in Drainage Area: Dev-C tiyd Method: SBUH Hyd Loss Metlwd: SCS CN Number Peak Factor: 484 00 SCS Aba: 0.20 Storm Dur 24.00 hrs Area CN TC Pervbus 5.5910 ac 50.00 0.16 hre Impervious 1.3690 ac 98.00 p.Og ftrs Total 69600 ac Supporting Data: Pervious CN Data: Landscaping-Type A Soils 50.00 5.5910 ac Impervious CN Data: 37' road + 5' SW 98.00 1.30 ac Pervious TC D~a: Flow type: Description Length: Sk1pe: Coefl: Travel Time Sheet kow down landscaping 50.0011 1.00% 0,1500 9.39 min Impervloue TC Data: Flow type. Description Length: Slope Coeff: Travel Time Sheel road to CB 18.00 k 2.00% 0.0110 0.39 min Channel storm pipe 1281 00 k 1.0096 42.0000 5.08 min 100 yr Flow Time Volumo Summary: 1.2507 cfs 8.00 hrs 25472,93 cf - 0.5848 acfl BasinlD Peak Q Peak T Peak Vol Area Method Rainlype Evenl - (ds) (hrs) (ac-ft) ac (Loss ~~ 0.37 8.00 0 1214 8.98 SBUH/SCS TYPEIA 8 mo Dev-C 0.60 8.00 0.2024 6.96 SBUHISCS TYPEIA 2 yr Dev-C 1.09 8.00 0.4638 8.96 SBUH/SCSTYPEtA 25yr Dev-C 1.25 8.00 0.5848 6.96 SBUH/SCS TYPEIA 100 yr Basollno Engineering Inn WaterWOrks HMS Roport Fr;day, July 29, 2011 P cC Con nce Pace 4 08104Windshadow SBUH Conveyance Storm Drainage Calculations Developed Basin D Project Precips [2 yr] 2.00 in [5 yrj 2.50 in [10 yr] 3.00 in [25 yrj 3.50 In [100 yr] 4.00 In (6 mo] 1.28 in Drainage Area: Dev-D Hyd Method: SBUH Hyd Loss Method: SCS CN Number Peak Factor: 484.OD SCS Abs: 0.20 Storm Dur 24.00 hrs Area CN TC Pervious 2.2600 ac 50.00 0.16 hrs Impervious 02400 ac 98.00 0.03 hrs Total 2.5000 ac Supporting Data: Pervious CN Data: Landscaping-Type A Soils 50.00 2.2600 ac Impervious CN Data: 37' road + 5' SW 98.00 0.2400 ac PeMous TC Data: Flow type: Description: Lergth: Slope: Coeff: Travel Time Sheet flow down landscaping 50.00 ft 1.00% 0.1500 9.39 min Impervious TC Data: Flow type: Description: Length: Slope: Coetf Travel Time Sheet road to CB 18.00 ft 2.009'° 0.0110 0.39 min Channel storm pipe 227,00 ft 0.50% 42.0000 1.27 min TC of 1.66 min < 5 min, program will use a tc of 5 min In computations. 100 yr Flow Time Volume Summary: 0.2361 cfs 7.83 hrs 6014.87 cf - 0.7381 acft BasinlD Peak Q Peak T Peak Vol Area Method Ralntype Event ---- (cis) (hrs) (ac•ft) ac /Loss Dev-D 0.07 7.83 0.0213 2.50 SBUH/SCS TYPEIA 6 mo Dev-D 0.11 7.83 0.0355 2.50 SBUH/SCS TYPEIA 2 yr Dev-D 0.21 7.83 0.1022 2.50 SBUH/SCS TYPEIA 25 yr Dev-D 024 7.83 0.1381 2.50 SBUH/SCS TYPEIA 100 yr WeterWOrks HMS Reporl Friday, July 29, 2011 Co r+~ Aaa+e 5 08104Windshadow SBUH Conveyance Storm Drainage Calculations Developed Basin E Project Precips [2 yr] 2.00 in [5 yr] 2.50 in [10 yr[ 3.00 in [25 yr] 3.SD in [100 yrj 4.00 in [8 mo] 1.28 in Drainage Area: Dev-E Hyd Method: SBUH Hyd Loss Method: SCS CN Number Peak Factor. 484.00 SCS Atu: 0.20 Storm Dur 24.00 hrs Area CN TC Pervious 6.166D ac 50.D0 0.15 hrs Impervious 1.1960 ac 98.00 0.08 hrs Total 7.3620 ac Supporting Data: Pervious CN Data: Landsgping-Type A Soils 50.00 6.1660 ac Impervious CN Data: 37' road + 5' SW 98.00 1.1960 ac Pervious TC Data: Flow type: Description: Length: Slope: Copff Travel Time Street flow down landscaping 5D.D0 ft 1.00% 0.1500 9.39 min Impervious TC Data: Flow type: Description: Length: Slope: Coeff: Travel Time Sheet road to C8 18.00 ft 2.00% 0.0110 0.39 min Channel storm pipe 1080.D0 ft 1.00% 42.0000 4.29 min TC of 4.67 min < 5 min, program will use a tc of 5 min in computations. 10D yr Flow Time Volume Summary: 1.1015 cfs 7.83 hrs 23805.15 cf - 0.5465 acft BasinlD Peak Q Peak T Peak Vol Area Method Raintype Event ---- (cfs) (hrs) (ac-ft) ac /Loss Dev-E 0.32 8.00 0.1066 7.36 SBUHISCS TYPEIA 6 mo Dev-E 0.53 7.83 0.1768 7.36 SBUHISCS TYPEIA 2 yr Dev-E 0.96 7.83 0.4261 7.36 SBUH/SCSTYPE1A 25yr Dev-E 1.10 7.83 0.5465 7.36 SBUHlSCS TYPEIA 100 yr ~zl Waterworks HMS Report Friday, July 2g, 2011 Project: ComeYerlce Papo B 08104~ndshadow SBUH Conveyance Storm Drainage Calculations Developed Basin F Protect Precips [2 yrj 2.00 in [5 yrj 2.50 in [10 yr) 3.00 in [25 yr] 3.50 in (100 yr] 4.00 in [6 mo] 1.28 in Drainage Area: DewF Hyd Method: SBUH Hyd Loss Method: SCS CN Number Peak Factor: 484.00 SCS Abs: 0.20 Storm Dur 24.00 hrs Area CN TC Pervious 6.3160 ac 50.00 0.16 hrs Impervious 1.9130 ac 98.00 0.11 hrs Total 8.2290 ac Supporting Data: Pervious CN Data: Landscaping-Type A Soils 50.00 6.3160 ac Impervious CN Daha: 37' road + 5' SW 98.00 1.9130 ac Pervious TC Data: Flow type: Description: Length: Slope: Coeff: Travel Time Sheet flow down landscaping 50.00 ft 1.00°h 0.1500 9.39 min Impervious TC Data: Flow type: Description: Length Slope: Coeff: Travel Time Sheet road to CB 18.00 K 2.00°~ 0.0110 0.39 min Channel storm pipe 1560.00 ft 1.00% 42.0000 6.19 min 100 yr Flow Time Volume Summary: 1-7367 cis 8.00 hrs 33784.67 cf - 0.7756 acft BaSInID Peak Q Peak T Peak Vol Area Method Raintype Event --- (cfs) (hrs) (ac-ft) ac /Loss Dev-F 0,51 8.00 0.1696 8.23 SBUH/SCS TYPEIA 6 mo Dev-F 0.84 8.00 0.2828 8.23 SBUH/SCS TYPEIA 2 yr Dev-F 1.51 8.00 0.6237 8.23 SBUH/SCS TYPEIA 25 yr Dev-F 1.74 8.00 0.7756 8.23 SBUH/SCS TYPEIA 100 yr ~~~ Wa[erWorks HMS Report Friday, Jury 29. 2011 Pro ct: Conve rice Pa e 7 08104Windshadow SBUH Conveyance Storm Drainage Calculations Developed Roof (Assume 2,500 square feet) Project Precips [2 Yr1 2.00 in [5 yr] 2.50 in (10 yrj 3.00 in [25 yrJ 3.50 in [100 yr] 4.00 in (6 moj 1.28 in Drainage Area: Roof Hyd Method: SBUH Hyd Loss Method: SCS CN Number Peak Factor: 484.00 SCS Abs: 0.20 Storm Dur 24.00 hrs Area CN TC Pervious 0.0000 ac 0.00 0.00 hrs Impervious 0.0570 ac 98.t)Q 0.00 hrs Total 0.0570 ac Supporting Data: - Impervious CN Data: 2500 sf roof area 98.00 0.0570 ac Impervious TC Data: Flow type: Description: Length: Sbpe: Cceff: Travel Time Sheet roof 10.00 ff 12.00% 0.0110 0.12 min TC of 0-12 min < 5 min, program will use a tc of 5 min in computations. 100 yr Flow Time Volume Summary: 0.0527 cfs 7.83 hrs 778.97 cf - 0.0179 acft BasinlD Peak Q Peak T Peak Vol Area Method Raintype Event "-- (c~) (ham) (ac-ff) ac (Loss Roof 0.05 7.83 0.0179 0.06 SBUH/SCS TYPEIA 100 yr Conveyance Capacity Developed Storage Area Conveyance Capacity Check 08104-Windsahdow MANNING'S EQUATION FOR OPEN CHANNEL FLOW CIRCULAR PIPE CAPACITY t2" Storm Pipe @ 0.5% 1.49AR- S z SBUH Analysis Q= n Input Values d =diameter of pipe 1.00 ft h = height of Flow 0.90 ft 5 = lonyitudinai slope 0.0050 fUft n =roughness coefficient 0.013 C:alr„IatPrf Variahlns V =Velocity 3.62 fps A =Area P =Perimeter WA =Wetted Area 0.745 ftZ UVP =Wetted Perimeter 2.498 ft R = H draulic Radius 0.298 ft Percent Full 90.0 Q = ~uanlit of flow 2.69 cfs > 2 fps For cleansing velocity 0100-yr = 1.74 cfs Developed F Basin Capacity Check for 100-yr storm. 24-hr Storm 2,69 cfs > 1 74 cfs =_> Meets ca ac PipcCapady.xls ~ Baseline Engineering. Inc. (JA1'd1 Conveyance Capacity Developed Storage Area Conveyance Capacity Check 08104-Windsahdow MANNING'S EQUATION FOR OPEN CHANNEL FLOW CIRCULAR PIPE CAPACITY z ! 6" Roof Drain Pipe @ 0.5% 1.49AR'.S' SBUH Analysis = Conversative ra d =diameter of ipe 0.50 R h = hei ht of Ilow 0.45 ft S =Ion ihidinal sloe 0.0050 ft/ft n = rou hness coefficient 0.013 Calculated Variables V =Velocity 2.28 fps A =Area P =Perimeter WA =Wetted Area 0.186 ft' WP =Wetted Perimeter 1.249 ft R = H draulic Radius 0.149 Il Percent Full 90.0 Q = Quantit of flow 0.42 cfs > 2 fps for cleansing velocity 0100-yr = 0 05 cfs Assume 2,500 s( Capacity Check for 100-yr storm, 24-hr Storm Opix > Qioo•y~ 0.42 cfs > 0 05cfs =_> Meets capacity PipeCapacity.xls ~ 6asetine Encineering. !nc. (JA~,N) Conveyance Capacity Developed Storage Area Conveyance Capacity Check 08104-Windsahdow IVIANNING'S EQUATION FOR OPEN CHANNEL FLOW CIRCULAR PIPE CAPACITY > 8" Storm Pipe @ 0.5% I.49AR 3 S Z SBUH Analysis Q=- n Innut Valuate d =diameter of pipe 0.67 ft h =height of flow 0.60 ft S =Ion itudinal slope 0.0050 ft/ff n =roughness coefficient 0.013 V = Velocit 2.76 s A =Area P =Perimeter lNA =Wetted Area 0.331 ffZ WP =Wetted Perimeter 1.665 ft R = H draulic Radius 0.199 ff Percent FWl 90.0 0 =Quantity of flow 0.91 cfs > 2 fps for cleansing velocity CB Intel Capacity = Dev F/No. CBs 0100-yr = 1.7415 = 0.35 cfs (conservative) Capacity Check for 100-vr storm. 24-hr Storm QP~~ > Otoo-yr p.g1 cfs > 0.35 cfs =_> Meets ca°acity PipeCapacily.xls Baseline Enyincering, Inc. (JAW )