HomeMy WebLinkAbout61 Service Maintenance 00-12 3810 SH-30FOR OFFICE USE ONLY
CASE NO. qq -'f
DATE SUBMITTED I ~
SITE PLAN APPLICATION
l\1INI1\11JM SUBMITTAL REQUIREMENTS
I Site plan application completed in full .
1ML $100.00 Application Fee .
~ $100.00 Development Permit Application Fee.
ill.6_ $3 00 . 00 Public Infrastructure Inspection Fee if applicable. (Ibis fee is payable if construction of a public
/
waterline, sewerline, sidewalk, street or drainage facilities is involved.)
__ Ten (10) folded copies of site plan. _z A copy of the attached site plan checklist with all items checked off or a brief explanation as to why they are not
checked off.
APPLICATION DATA
NAlvffi OF PROJECT ]"". ?. Ne,. ls< ~~'f.1 NC::c lc:r LY'Y\'f'~\/E.. iM ~tS
ADDRESS I 0() AN'OPL$o N 1 C ct.LF-6\E S1 A"1 t ~ l l'F-//SU. a
LEGAL DESCRIPTION
APPLICA!'IT (Primary Contact for the Project):
Name ~~ f'f\1S-u:A1...r-(Mv&'J
Street Address 295 l Ji: .. XA:? Av r S . ) 5:21 E.. A · City CoLA .. ebE. ~A-r 1 0"1
E-Mail Address rY1d %c. ~ @ 1)1 e . Op t State I X. Zip Code /l'B !..\o
Phone Number l'P'1'b -5'?'5°1
PROPERTY OWNER'S INFORMATION :
Name CoLL..£l:oE:. S-rA\1c,..J "I ~D
StreerAddress )~12. IN~L..SCJ ~-
Fax Number (p°i?:; -Y 'Z.'3 ~
City Co t...L-Ff<Ilz. SrA \1 D N
State __ -r_.'f: __ Zip Code 116'-l C E-Mail Address ------------
Phone Number __ f.2_°!._~_.__-_,5=-to-=--o-\ C)-=-___ Fax Number (Qql1 -'5(o\ "2.
ARCHITECT OR ENGINEER'S INFORMATION:
Name 12.A i;:,ct-1 N\t.-r. c..ia., L..F ( (Y\ Dbl
StreetAddress Z 55 l IC.YA-:, A'1c. S . )<;t£..fa.. City C::o1__.vffi'ii:.-SiA1 1c 0
State )~ "]1'8 '-l O E-MailAddress MJ ,y:.;, @ <j-\e,.a.e.t-
--'-"'--'-'-"---_......'--'-'"--"""'-'"'-----..___Fax Number (sPr?;:;, -Y Z Y ?:,
OTHER CONT ACTS (Please specify type of contact, i.e . project manager, potential bu yer, local contact, etc .)
Name ----------------------------------
S tr~t Ad dress ----------------City -------------
State Zip Code _____ E-Mail Address ------------
Ph o ne N umber Fax Numbe r-----------------
S ITE PlAS . .>J'PLICATIOS
SITEAPP .DOC 03.115 !99
1 of 3
-CURRENTZONING _________ _
PRESENT USE OF PROPERTY 6Ff\C..E '* Co\.J'L38QUSG. Tu(?, T\.6\IC..E. Or J}l£_
'B=--AC-r-Pe.:e .. c 1 ~c1 N..o. G
PROPOSED USE OF PROPERTY
V ARIANCE(S) REQUESTED AND REASON(S)
# OF PARKING SPACES REQUIRED _i"'--8-=--
0 MULTI-FAMILY RESIDENTIAL
Total Acreage ----
Floodplain Acreage --
Housing Units ----
# of 1 Bedroom Units
# of 2 Bedroom Units
# of 3 Bedroom Units
# of 4 Bedroom Units
FOR 2 BEDROOM UNITS ONLY
__ # Bedrooms ~ 132 sq. ft.
__ # Bedrooms < 132 sq. ft.
#OF PARKING SPACES PROVIDED ?£)"
~OMMERCIAL
Total Acreage U~~
Building Square Feet -Z..(.o '-\ C'.)
Floodplain Acreage UN ~~VY iJ
The applicant has prepared this application and certifies that the facts stated herein crnd exhibits attached
her o are true and correct.
SITE PLA.'\ APPLICATIO~
SITEAPP .rxx: 03 /25 /99
Date
J~. z.t ·'ff
2 of3
SUPPLEMENTAL DEVELOPMENT PERMIT INFORMATION
Application is hereby made for the following development specific waterway alterations:
fA-gx..1 b4 t z 1 o:t 1m@w emlt.N1 a.., fu<2.. .:f1J s:r \cf? OF -n-i E-P£.Ac:£. ~ f b::: .. c 1 N c-r ~ . lp
ACKNOWLEDGMENTS:
L "'ES\ t.L SA\f ~ Dt'-/10 ~L-.design engineer/owner, hereby acknowledge or affirm that:
The information and conclusions contained in the above plans and supporting documents comply with the current requirements of
the City of College Station, Texas City Code, Chapter 13 and its associated Drainage Policy and Design Standards.
a condition of approval of this permit application, I agree to construct the improvements proposed in this application according to
documents and the requirements of Chapter 13 of the College Station City Code.
Contractor
CERTIFICATIONS: (for proposed alterations within designated flood hazard areas.)
A. L t-J J 6 , certify that any nonresidential structure on or proposed to be on this site as part
ofthis application is designated to prevent damage to the structure or its contents as a result of flooding from the 100 year storm.
Engineer Date
B . L N/A certify that the finished floor elevation of the lowest floor, including any
basement, of any residential suucrure , proposed as part of this application is at or above the base flood elevation established in the
latest Federal Insurance Administration Flood Hazard Srudy and maps, as amended.
Engineer Date
C. L Nb i.-n-\ Q,, ~ .... \ . .-\. ... ~ i. , certify that the alterations or development covered by this permit shall not
diminish the flood-carrying capacity of the waterway adjoining or crossing this pennitted site and that such alterations or
development are consistent with requirements of the City of College Sta ti on City Code, Chapter 13 concerning encroachments of
fl~~~~of5<o00wa, ~~.1 ! l ~v, ~ ~ O;;f Al /t({r:f
Engineer / Date ;
D . L No t..-n\ f2 , 2::A'(l.0CU.... l 'Cf~ , do certify that the proposed alterations do not raise the level of the 100 year
flood above elevation established in the latest Federal Insurance Administration Flood Hazard Studv.
flJ:#vi3.~~ {)J:Z-b. /~1? -
Engineer ~ D a te 7
Conditions or comments as part of approval :-----------------------------
In accordance 'With Ch.apter 13 of the Code of Ordinances of the City o f College Station, measures shall be taken to insure that debris
from construction, erosion, and sedimentation shall not be deposited in c ity streets, or existing drainage faci lities .
I hereby grant this permit for development All development shall be in accordance "'ith the plans and specifications submitted to
and approved by the Ci ty Engineer for the abo ve named project. All of the applicable codes and ordinances of the City of Colle ge
Sta tion s hall apply .
SITE PL-\.'.: APPLICATION
SITEAPP .D0C 03 125 /99
3 of3
~-~
C.OllEGl STATION
DEVELOPMENT PERMIT
PERMIT NO . 500013
DP-J.P.NO. 6 PARKING LOT
FOR AREAS IN THE SPECIAL FLOOD HAZARD AREA
RE : CHAPTER 13 OF THE COLLEGE STATION CITY CODE
SITE LEGAL DESCRIPTION:
j. ?. b'9 \ lQ_~ <fr'-.
e~sD ~~-\~
DATE OF ISSUE: JUNE 22, 2001
OWNER:
C.S.I.S.D.
1812 WELSH,# 120
COLLEGE STATION, TX 77840
SITE ADDRESS:
100 ANDERSON ST
DRAINAGE BASIN:
WOLF PEN CREEK
VALID FOR 12 MONTHS
CONTRACTOR:
TYPE OF DEVELOPMENT: FULL, AS PER APPROVED PLANS
SPECIAL CONDITIONS:
NO CONSTRUCTION IN TXDOT ROW UNTIL TXDOT PERMIT ISSUED
All construction must be in compliance with the approved construction plans
All trees must be barricaded , as shown on plan s, prior to any construction. An y trees not barricaded will not count
towards landscaping points. Barricades must be l ' per caliper inch of the tree diameter.
The Contractor shall take all necessary precautions to prevent silt and debris from leaving the immediate construction site
in accordance with the approved erosion control plan as well as the City of College Station Drainage Policy and Design
Criteria. The O wner and/or Contractor shall assure that all disturbed areas are sodden and establishment of vegetation
occurs prior to removal of any silt fencing or hay bales used for temporary erosion control. The Owner and/or Contractor
shall also insure that any disturbed vegetation be returned to its original condition, placement and state. The Owner
and/or Contractor shall be responsible for any damage to adjacent properties, city streets or infrastructure due to heavy
machinery and/or equipment as well as erosion , siltation or sedimentation resulting from the permitted work.
Any trees required to be protected by ordinance or as part of the landscape plan must be completely fenced before any
operations of this permit can begin.
In accordance with Chapter 13 of the Code of Ordinances of the City of College Station , measures shall be taken to
insure that debris from construction, erosion, and sedimentation shall not be deposited in city streets , or existing drainage
facilities .
I hereby grant this permit for development of an area in the special flood hazard area. All development shall be in
accordance with the plans and specifications submitted to and approved by the City Engineer in the development permit
application for the above named project and all of the codes and ordinances of the City of College Station that apply.
If it is determined the prescribed erosion control measures are ineffective to retain all sediment onsite, it is the
contractors responsibility to implement measures that will meet City, State and Federal requirements.
(,,_ l ;;>~ ( Q (
Date
Owner/ Agent/Contractor Date
~-v DEVELOPMENT PERMIT
PERMITNO. 500013
COLLlGl STATION DP-J.P . PARKING LOT
FOR AREAS OUTSIDE THE SPECIAL FLOOD HAZARD AREA
RE: CHAPTER 13 OF THE COLLEGE STATION CITY CODE
SITE LEGAL DESCRIPTION:
DATE OF ISSUE: February 25 , 2000
OWNER:
BALL, DONALD A
601 WOODSON
BRYAN, TX 77801-4746
SITE ADDRESS:
100 ANDERSON ST
DRAINAGE BASIN:
WOLF PEN CREEK
VALID FOR 12 MONTHS
CONTRACTOR:
TYPE OF DEVELOPMENT: CONSTRUCTION AS PER APPROVED PLANS .
SPECIAL CONDITIONS:
The Contractor shall take all necessary precautions to prevent silt and debris from leaving the immediate construction site
in accordance with the approved erosion control plan as well as the City of College Station Drainage Policy and Design
Criteria. The Owner and/or Contractor shall assure that all disturbed areas are sodden and establishment of vegetation
occurs prior to removal of any silt fencing or hay bales used for temporary erosion control. The Owner and/or Contractor
shall also insure that any disturbed vegetation-be returned to its original condition , placement and state. The Owner
and/or Contractor shall be responsible for any damage to adjacent properties , city streets or infrastructure due to heavy
machinery and/or equipment as well as erosion , siltation or sedimentation resulting from the permitted work.
Any trees required to be protected by ordinance or as part of the landscape plan must be completely fenced before any
operations of this permit can begin.
In accordance with Chapter 13 of the Code of Ordinances of the City of College Station, measures shall be taken to
insure that debris from construction, erosion , and sedimentation shall not be deposited in city streets , or existing drainage
facilities.
I hereby grant this permit for development of an area outside the special flood hazard area . All development shall be in
accordance with the pl d specifications submitted to and approved by the City Engineer in the development permit
application for the ab e nam d project and all of the codes and ordinances of the City of College Station that apply.
Date oz --z ·5 '--> o o
Date
Contractor Date
'"
' '•
, ... . c_
(~
MUNICIPAL DEVELOPMENT GROUP
2551 Texas Ave. South, Ste. A •College Station, Texas 77840 • 409 693-5359 •FAX: 409 693 -4 243 •E-mail: mdgcs@g te.co m
Consulting Engineers , Surveyors, Planners and Env ironmental Consultants
October 15, 1999
Jeff Tondre
City of College Station
Development Services
PO Box 9960
College Station, Texas 77842
RE: Drainage Letter-J.P. No. 6 Parking Improvements
MDG Job No. 000576-3248
Dear Jeff:
REVIEWED FOR
COMPLIANCE
NOV 121999
COLLEGE STATIO/N L
ENG~(p '-(it" .
The above referenced project consist of relocating existing parking spaces and constructing a new 3 5 space
parking lot located at the rear of the existing building. This parking lot will be constructed with standard
concrete curb and gutter with an H.M.A.C . surface with pertinent base and subgrade. The project site is
located at the southwest corner of the intersection of George Bush Drive and Anderson Street. Exhibit # 1 -
"Site Plan" is attached for clarification of the parking lot configuration and drainage pattern .
The project site is located adjacent to the Wolf Pen Creek and contains floodplain and floodway as
graphically depicted by F .E.M.A. F.I.R.M. Community Panel No. 48041C0144C (July 2, 1992). The site
area, which is located on the College Station ISD property, consists of approximately 1.00 acres . Using the
Rational Method (Q=CIA), the parking lot improvements will create the following runoff increases:
RUNOFF CALCULATIONS
Storm (Yr) Pre (cfs) Post (cfs) Diff. (cfs) Req'd Detention (ft3)
2 2.552 3.961 1.409 1269
5 3.103 4 .817 1.714 1543
10 3.483 5.407 1.924 1732
25 3.977 6 .175 2 .198 1978
50 4.496 6 .980 2.484 2236
100 4.694 7 .288 2 .594 2334
The policy of the City of College Station is to encourage the rapid conv e y ance of storm water through and
out of the City w ithin the primary system. Since this project site is located directly adjacent to the Wolf Pen
Creek, being a primary system , no runoff will be detained on the site and the post-development runoff will
discharge directly, without constriction, to the Wolf Pen Creek . This is done in order to keep from stacking
peaks of the primary creek and the discharge of the s ite runoff.
000 5 7 6-c.20 -6 7 (3 248)
Justification of no detention was made by the comparison of time on concentration, (Tc) of both
hydrographs. The approximate Tc of Wolf Pen creek, to the project site , is approximately twenty minutes .
This Tc assumes and average velocity of3 .0 ft/sec and a travel distance of3600 feet. The minimum Tc of
the site allowed without detention is ten minutes. With detention, the Tc of the site increases to
approximately twenty minutes . Therefore , detention on-site would increase the overall peak of Wolf Pen
Creek.
In conclusion, the basic design of the drainage improvements will include :
• No on-site detention with direct discharge into Wolf Pen Creek;
• Discharge of parking lot runoff through multiple curb leave-outs with drainage flumes ;
• Implementation of standard erosion control devices .
Please call me if you have any questions.
'.j~B~ettt
North B. Bardell, Jr., P .E.
C.E .O ., Project Manager
000576 -c.20-67 (3248)
SECTION #2 (MINOR) -PRE-DEVELOPMENT
GENERAL INFORMATION
Description : Drainage area of site before development.
Drainage Area (A PR E) = 1 .000 acres
TIME OF CONCENTRATION CTc)
GIVEN
Maxi mum Travel Distance (DPRE)
Velocity of Runoff (VPRE) =
Coefficient of Runoff (CPRE) =
310 ft
ft 0 .75 f sec
0.40
**NOTE: Minimum Tc allowed = 10 min .
2 YEAR FREQUENCY, RA TE OF DISCHARGE (Q)
Coefficient (e) = 0 .806
Coefficient (b) =
Coefficient (d) =
65
8
5 YEAR FREQUENCY. RA TE OF DISCHARGE (Q)
Coefficient (e) =
Coefficient (b) =
Coefficient (d) =
0 .785
76
8.5
10 YEAR FREQUENCY. RA TE OF DISCHARGE (Q)
Coefficient (e) = 0.763
Coefficient (b) =
Coefficient (d) =
80
8.5
25 YEAR FREQUENCY. RA TE OF DISCHARGE (Q)
Coefficient (e) = 0.754
Coefficient (b) = 89
Coefficient (d) = 8 .5
50 YEAR FREQUENCY, RA TE OF DISCHARGE (Q)
Coefficient (e) =
Coefficient (b) =
Coefficient (d) =
0.745
98
8 .5
100 YEAR FREQUENCY. RA TE OF DISCHARGE (Q)
Coefficient (e) = 0.73
Coefficient (b) = 96
Coefficient (d) = 8
000576-3 24 8 Drainage Calcul ations .xJs
RESULT
TqPRE) = 6.9 min.
Rainfall Intensity (1:0 = 6 .327 in/hr
.•.•. Jl.:.•.·.• .. ·.·.~.···.•.•.•.=.•.: .•. :........................ : ... . } .. ::: ;::·· tt•Ji 15.5.2hiit.•.·.·.·.•:_.:_:·_··.· .. ···.• .. :.···· .... ·=·=·:·:·:·:·:·:·:-:-.-:-:·.··:=:=:=:-::::: :;:·:::::·:;:·:;::::::::::::::: :-:-:-:-:-:·:·:-:-:-:-:-:-:-:·:-:-:-:-:-:-:-:-:-:-:·:-:-:-:
Rainfall Intensity (1 10) = 8 .635 in/hr
.:_:.:.a.:.·.:.·.·.•.·.•1•.•.:_l _•.•.•-.:.•.=.·.:.•.:.•·· :zr .• ::.r·.r . .-• .-........................................... :.··.:.····•• •••·•••
7 •••••••• • • ·•••• ·a1ua ait• ::rn V.· ::;:;:;:::::::::::::;:;:;:;:::::::::::::;:;:;:;:::::: ·.·.·.·.·.·.·.·-:-:-:-:-:·:-:-:-:·:-:-:-:-:-:-:
Rainfall Intensity (1 25) = 9 .861 in/hr
~~R~ii~~a;;;1~1~~~~f ~f c=;;~~t[~!!i~r~~~r :.;-:.:-:-::;:;:;:;:::~:~:~:::;:~:;:::;:;:;::::::-:::::====;1i~iiirt~~~l§~iii~[~~~~~~1f ~[
Rainfall Intensity (1 50) = 11 .148 in/hr
?~i :a .,, • ·:··•••••• ••••••••:::•••• ··•:••••••••••••••••••••••••••1.~•,1 ••«~·•-••••·•·•
Rainfall Intensity (1 100) 11 .639 in /hr
.g~~~:!F :•:·:fi : •• :::: :xr••••••• l,;j~i•·ii·•::':•••J
SECTION #3 (MINOR) -POST-DEVELOPMENT
GENERAL INFORMATION
Description : Drainage area of site after development
Drainage Area (A1) = 0 .380 acres (impervious area)
Drainage Area (A2) = 0.620 acres (landscaped area)
TIME OF CONCENTRATION CT c)
GIVEN
Maximum Travel Distance (D 1) =
Velocity of Runoff (V1) =
Coefficient of Runoff (C 1) =
Maximum Travel Distance (Di) =
Velocity of Runoff (Vi) =
Coefficient of Runoff (Ci) =
230 ft
ft 3 .10 f sec
0 .90
160 ft
ft 1 .00 f sec
0.45
**NOTE: Minimum T c allowed = 1 O min .
2 YEAR FREQUENCY. RA TE OF DISCHARGE (Q)
Coefficient (e) =
Coefficient (b) =
Coefficient (d) =
0 .806
65
8
5 YEAR FREQUENCY. RA TE OF DISCHARGE (Q)
Coeffici ent (e) =
Coeffici ent (b) =
Coefficient (d) =
0 .785
76
8 .5
10 YEAR FREQUENCY, RA TE OF DISCHARGE (Q)
Coefficient (e) =
Coeffici ent (b) =
Coefficient (d) =
0 .763
80
8 .5
25 YEAR FREQUENCY. RATE OF DISCHARGE (Q)
Coefficient (e) =
Coefficient (b) =
Coefficient (d) =
0 .754
89
8.5
50 YEAR FREQUENCY. RA TE OF DISCHARGE (Q)
Coefficient (e) =
Coeffici ent (b) =
Coefficient (d) =
0.745
98
8.5
100 YEAR FREQUENCY, RA TE OF DISCHARGE (Q)
Coefficient (e) =
Coeffici ent (b) =
Coeffi cient (d) =
000576-3248 Drainage Calculations.xis
0 .73
96
8
RESULT
T c1 =
T qPOST) =
Rainfall Intensity (I i) =
Q AREA 1 =
1 .2 min .
2.7 min.
3 .9 min .
6.327 in/hr
2 .182 cfs
Q ARE A 2 = 1 . 780 cfs
·.:.: ... a,· .. •,.·.=',·.·,''....•·•.•·,='.:',~ .. ',•.•.,•.'. :< < ,, ' .,. , , , , , •..::: 31i61 fa'$ttI ~ t?:f/{{}f}~/{{{ . . . . . . ........... ·.·.·.·.·.·.·.·.·.·-:-:-:-:-:-:-:·:·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.-.·
Rainfall Intensity (1 5) = 7 .693 in/hr
Q AR EA 1 = 2 .653 cfs
Q AREA 2 = 2 .164 cfs
.•.•.gg··.'.:.•.:.·.'.:.·.·.·.•.•.•.~.•.'.• ••:::•::• ::::;:::..:•t:;::::: •• •••i ••• 4~a17nM$r•r -:.;-:-:-:-:-:-:-:.:·:-:-:-:.;-:-·-·.·. ·················.··.·.·.·.·.·.·.·.•.·.·.··.·-:·.·.·.·:·:·:·.·.·.·.·.·.·.·.·.·.·.
Ra i nfall Intensity (1 10) = 8 .635 in/hr
Q AREA 1 = 2.978 cfs
Q AREA 2 = 2.429 cfs
::~~·:~:i:i'ii·•·· ::::::::::::::.•:'.:,:.: :•:••···•:j ......... .<::::::::·!~!17!:§!!!:•!:.:::•
Rainfall Intensity (1 25 ) = 9 .861 in/hr
Q ARE A 1 = 3 .401 cfs
Q ARE A 2 = 2 . 77 4 cfs
==a-=·:.:·==========\~/::::-:·::::::=:=:::::========· · · · · · · · · -.--·· =.====.==.==.==.'.•.:=.==.:================ .s· · :.•.==,"'=.: .. ,~,,:s.· .· .·,•,~,: .. :.'=.'·.:·.:·.'·.'.:.::.'.',~,~'~'~'~'~'~,•,~,:,~,·.~·'.~.•
::,:,,.,'.·,·.,-.".".".·.·,:.·.·,=-:,·:,·:,·:',:,:·,:,:,· .•,'.',:.:,:.:,:.:,:.:,'.','.',:.:,:.:,:.:,: .. · :·:·:·:·:·:·:·:·:·:·:·:·:·:·:·:·: :=t:'"' ~10>. ~~ :::::::::::::::::::::::::::=::::: :;:;:;:;:;:::;:;:;:;:=:::::·:=:···
Rainfall Intensity (1 50) =
Q AR EA 1 =
in/ 11 .148 hr
3 .844 cfs
Q AREA 2 = 3 .136 cfs
•.• ffi.1:::.:: ::::::::::: :·•·'•:··::: •. :_.:. .... ::.&~uo i.f.~EI•I
Rainfall Intensity (1 100) 11 .639 in/hr
Q AREA 1 = 4 .014 cfs
Q ARE A 2 = 3 .274 cfs
.:,'.a,'.•,•.•,'.·.·.·.~,•.·.:.l....•.·.•.·.·.·.•.•,• .. •.,:::.•,•.·,·:.,•.•,•.•,•.•,•.•.:.•.•.•·.•.• ••:::: • • • ? ••• wt12aa as :: • ·:IVV ;.;.;.;.;.;.;.;·:·'.·>:·:·:·:·:·:;:;:::;:;:;:;:;::::::::::::·:::::::'.:;:;:;:;:;: ·>:<·>:·:·:·.·.·:;.::;:;.:·:·:·:·: ·:·:·:·:·:·:.;.;.;.;.·.·.
SECTION #4 -HYDROGRAPHS Chart 4
2-YEAR HYDROGRAPH
1a ....... --------------------------.--------------------------------------------------------.
Volume Con eyed= 1,269 ft3
0
0 10
Im Post-Development EJ Pre-Development I TIME
(min)
HYDROGRAPHS Chart 4
20 30
SECTION #4 -HYDROGRAPHS Chart 5
5-YEAR HYDROGRAPH
-~3----------~ ~ -
1
0
0 10
fil Po st-Development Cl Pre-D eve lo pme nt
HYOROGRAPHS Chart 5
TIME
(min)
20 30
SECTION #4 -HYDROGRAPHS Chart 6
10-YEAR HYDROGRAPH
Volume
0 10
13 Post-Development 8 Pre-Deve lopment
HY DROGRAPHS Chart 6
TIME
(min)
20 30
SECTION #4 -HYDROGRAPHS Chart 7
25 -YEA R HYD RO GRAPH
4
~
cJ
~ -< ~ = CJ u -rJ) ....
~ 3
0 10
ID Post-Dev elopment rJ Pre-Dev elopment
HYDROGRAPHS Chart 7
TIME
(min)
20 30
SECTION #4 -HYDROGRAPHS Chart 8
50-YEAR HYDROGRAPH
a--~V-o-l-um~e-C_o_n_v_e_y-ed~,-2-,-2-36~ft-3 ~~~~-.-~~~~~~~----.
0 10
8 Po st -Dev elopment El Pre-D eve lopment
HY DROGRAPHS Cha rt 8
TIME
(min)
20 30
SECTION #4 -HYDROGRAPHS Chart 9
100-YEAR HYDROGRAPH
14--~~~~~~~~~-1 ~~~~~~~~~---.~~~~~~~~~......,
: 2 ,334 ft3
I
Volume Con veye d
I
12---~~~~~~----->l ~~~~~~~-+-~~~~~~--1
8,.._---------1
0 10
CJ Pre-Development El Post-Deve lopment
HYDROGRAPHS Chart 9
Tll\tIE
(min)
20 30