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APPLICATION - ~ PROJECT NAME: GROVE PLAZA LOCATION: SOUTHEAST CORNER HYPOLUXO RD. AND LAWRENCE RD. COMPUTER ID: GROVEPLAZA\MPMD I FILE NO.: MPMD 97-004 I TYPE OF APPLICATION: MASTER PLAN MODIFICATION APPLICANT/CONTACT PERSON: DONNA WEST OWNER: PHONE: 954-972-3959 FAX: 954-972-4178 PHONE: ADDRESS: 6191 WEST ATLANTIC FAX: BLVD ADDRESS: PO BOX 4399 MARGATE, FL 33063 DATE: SUBMITTAL / RESUBMITT AL 8/24/98 1ST REVIEW COMMENTS DUE: 9/21/98 PUBLIC NOTICE: TRC MEETING: 10/6/98 RESUBMITTAL DATE: 10/6/98 2ND REVIEW COMMENTS DUE: LAND DEVELOPMENT SIGNS POSTED: PLANNING & DEVELOPMENT BOARD 10/27/98 MEETING: CITY COMMISSION MEETING: 11/3/98 COMMENTS: ,L S:\FOR.'\1S\PROJECT TRACKING INFO PROJECT NAME: GROVE PLAZA LOCATION: SOUTHEAST CORNER HYPOLUXO RD. AND LAWRENCE RD. COMPUTER ID: GROVEPLAZA\MPMD I FILE NO.: MPMD 97-004 I TYPE OF APPLICATION: MASTER PLAN MODIFICATION APPLICANT/CONTACT PERSON: DONNA WEST OWNER: PHONE: 954-972-3959 F~: 954-972-4178 PHONE: ADDRESS: 6191 WEST ATLANTIC F~: BLVD ADDRESS: PO BOX 4399 MARGATE, FL 33063 DATE: SUBMITTAL / RESUBMITT AL 10/23/97 1ST REVIEW COMMENTS DUE: 11/10/97 PUBLIC NOTICE: TRC MEETING: 11/10/97 RESUBMITTAL DATE: 12/11/97 2ND REVIEW COMMENTS DUE: LAND DEVELOPMENT SIGNS POSTED: PLANNING & DEVELOPMENT BOARD 1/1~98 MEETING: CITY COMMISSION MEETING: 2$98 COMMENTS: S:\FORMS\PROJECT TRACKING INFO -------~ f 'J \ ~\\-/ \\\; .' " Ct..flahan, Proctor and Cross, In\,. Consulting Engineers' Surveyors' Planners' Land Development Consultants August 24, 1998 Mr. Michael W. Rumpf, Senior Planner Planning & Zoning Department City of Boynton Beach 100 E. Boynton Beach Blvd. Boynton Beach, FL 33425 RE: GROVE PLAZA: master site plan modification Dear Mr. Rumpf: On behalf of our client, we hereby re-submit our request for approval of the attached Master Site Plan for the Grove Plaza project. As per your requirements, attached please find 12 sets of the following: 1. This letter of request describing the changes made to the master site plan. 2. Master site plan. 3. Master stormwater management plan. 4. Master stormwater management calculations. The updated traffic study was submitted with our previous application. The modifications which have been made to the master plan since the previous approval are as follows: 1) The parcel lines have been reconfigured to create a separate common area tract which will accommodate the trunk road and drainage system and maintain a 200' distance from the property line of the proposed gas station parcel to the existing residences. 2) Parcel A has been modified from 7500 square feet of retail/pharmacy to 2940 square feet of convenience store/gas station and the site has been redesigned to the actual site plan of the 7-Eleven Convenience Store with gas sales which is being submitted concurrently with this application. 3) Parcel C has been modified from 4500 square feet of retail to 6540 square feet of retail. 4) Parcel D has been modified from 6500 square feet of retail to 9000 square feet of retail. 5) Site Data and Parking Data tables have been updated accordingly. 6) Proposed turn lanes on Hypoluxo Road have been added. Web Page: www.carnahan-proctor.com Email: margate@carnahan-proctor.com 6101 West Atlantic Blvd. . P.O. Box 4399, Margate, FL 33063' (954) 972-3959 . FAX (954) 972-4178 . Palm Beach (561) 364-0687 7) The southerly access drive has been modified from one-way to two-way traffic flow and the dumpsters along the south drive have been rotated accordingly. 8) A proposed 5' sidewalk has been added along Hypoluxo Road, and the proposed 6' sidewalk to be constructed by Palm Beach County has been shown along Lawrence Road. 9) The 15' landscape buffer has been clarified along the north boundary. 10) The proposed pavement for the widening of Lawrence Road has been added. As always, thank you for your assistance, and please feel free to call me should you have any additional questions or comments. ci:Q~ Donna C. West, P.S.M. Planning Manager cc: Bob and Alice Fay Kent Wilmering Chuck DeSanti \\ismp\o'.word6\donna'.platlet\letbbmod doc Grove Plaza Boynton Beach, Florida CP&A PROJECT NO. 950404 SFWMD SURFACE WATER MANAGEMENT CALCULATIONS 1) SITE DATA: 2) STAGE ELEVATIONS: ACREAGE Percent: From: To: Building 0.70 Ac. 8.7% 17.30 up Pavement 4.69 Ac. 58.0% 14.75 16.70 Exfil. Tr. 0.00 Ac. 0.0% 0.00 0 Lake Bank 0.00 Ac. 0.0% 0.00 0.00 Green Lineal(1) 2.07 Ac. 25.6% 14.00 16.70 Detention (side slope) 0.50 Ac. 6.2% 12.70 14.70 Detention (bottom) 0.13 Ac. 1.6% 12.70 up TOTAL AREA: 8.09 Ac. 100.0% Total Impervious: 5.39 66.63% Total Pervious: 2.70 33.37% 3) FLOOD AND RAINFALL CRITERIA: 24 Hour Rainfall: 3 Year 25 Year 100 Year 6.20 in. 11.00 in. 14.00 in. Maximum Available Soil Storage, SFWMD: 4) COMPUTE STAGE STORAGE: Green Staqe: Pavement Lake Bank Lineal(1 ) 12.50 0.00 0.00 0.00 13.00 0.00 0.00 0.00 13.50 0.00 0.00 0.00 14.00 0.00 0.00 0.00 14.50 0.00 0.00 0.10 15.00 0.08 0.00 0.38 15.50 0.68 0.00 0.86 16.00 1.88 0.00 1.53 16.50 3.68 0.00 2.40 17.00 5.98 0.00 3.42 17.50 8.32 0.00 4.45 18.00 10.67 0,00 5.49 18.50 13.01 0.00 6.52 Stage_1.xls Average Existing Grade: Average Proposed Grade: Lake, Water Table: 16.00 16.00 10.00 Min. Road Crown (NGVD) 15.00 Min. Floor Elev. (NGVD): 17.30 8.18 in. Detention Detention Exfil. Tr. (side slope) (bottom ) Total: 0.00 0.00 0.00 0.00 0.35 0.01 0.04 0.40 0.35 0.08 0.10 0.53 0.35 0.21 0.17 0.73 0.35 0.41 0.23 1.08 0.35 0.65 0.30 1.76 0.35 0.90 0.36 3.15 0.35 1.15 0.43 5.34 0.35 1.40 0.49 8.32 0.35 1.65 0.56 11.95 0.35 1.90 0.62 15.65 0.35 2.15 0.69 19.34 0.35 2.40 0.75 23.04 ~ PAGE 1 ~b }~ ~r Grove Plaza Boynton Beach, Florida CP&A PROJECT NO. 950404 SFWMD SURFACE WATER MANAGEMENT CALCULATIONS 5) WATER QUALITY: Store the first inch for the entire site. A. First Inch: v = 1 in. x Total Area x 1 ft./12 in. Total (Ac.): V = (ac-ft) 8.09 0.67 C. Total Required Detention: 1. The total required detention is either the first inch or 2.5 times the percent impervious, whichever is greater. The total required detention is: V(t) (ac-ft): 0.67 2. From the Stage - Storage Curve, the elevation is: Interpolate Stage between... Interpolate Runoff between... 14.50 0.64 15.00 0.95 Stage: 14.56 3. Allowable discharge thru bleed down device is 1/2" per day of the detention for the total project s Tot. Ac. 8,09 Ac Ft. 0.34 Allow.CFS 0.17 The minimum bleeder size within the Lake Worth Drainage District will produce more than the minimum allowable discharge. Stage_1.xls PAGE 2 Grove Plaza Boynton Beach, Florida CP&A PROJECT NO. 950404 SFWMD SURFACE WATER MANAGEMENT CALCULATIONS 6) RUNOFF (ZERO DISCHARGE) A. Soil StoraQe 1. Avg. Depth to Water Table = Avg. Proposed Grade - Water Level Avq. Grade: Water Level: D=(ft. ): 16.00 11.20 4.80 2. Soil Storage (S) = Available Soil Storage x Pervious Area/Total Area (See C-35, SFWMD VoI.IV) Av. Soil St. Pervious: Total (Ac.): S = (in. ): 8.18 2.70 8.09 2.73 B. 100 Yr.-3 Dav Storm Event Finished Floor Elevation: 17.30 NGVD 1. Rainfall - 3 Day Duration (P): P72 = P24 x 1.359 P24 = P72 = 14.00 in. 19.03 in. 2. Runoff, Q (in.) Q = {(P - 0.2 x S)^2}/(P + 0.8 x S) P72 (in.): S = (in. ): 19.03 2.73 Q (in.): 16.10 3. Total Runoff Volume, V (ac-ft.) V = Q x Total Area x 1 ft. /12 in. Q (in.): Total (Ac.): 16.10 8.09 V=(ac-ft): 10.85 4. From the Stage - Storage Curve, the zero discharge elevation is: Interpolate Stage between... Interpolate Runoff between... 16.50 8.32 17.00 11.95 Stage: 16.85 The proposed Finish Floor Elevation is adequate. Stage_1.x/s PAGE 3 Grove Plaza Boynton Beach, Florida CP&A PROJECT NO. 950404 SFWMD SURFACE WATER MANAGEMENT CALCULATIONS C. 25 Yr.-3 Dav Storm Event 1. Rainfall - 3 Day Duration (P): P72 = P24 x 1.359 P24 = 11.00 in. P72 = 14.95 in. 2. Runoff, Q (in.) Q = {(P - 0.2 x S)^2}/(P + 0.8 x S) P72 (in.): S = (in.): Q (in. ): 14.95 2.73 12.11 3. Total Runoff Volume, V (ac-ft.) V = Q x Total Area x 1 ft. /12 in. Q (in.): Total (Ac.): V = (ac-ft): 12.11 8.09 8.16 4. From the Stage - Storage Curve, the zero discharge elevation is: Interpolate Stage between... Interpolate Runoff between... 16.00 5.34 16.50 8.32 Stage: 16.47 D. 3 Year -1 Dav Storm Min. Road Elevation(B.F.1. Site): 15.00 NGVD 1. Rainfall - 1 Day Duration (P): P24 = 6.20 in. 2. Runoff, Q (in.) Q = {(P - 0.2 x S)^2}/(P + 0.8 x S) P24 (in.): S = (in.): Q (in. ): 6.20 2.73 3.81 3. Total Runoff Volume, V (ac-ft.) V = Q x Total Area x 1 ft. /12 in. Q (in.): Total (Ac.): V = (ac-ft): 3.81 8.09 2.57 4. From the Stage - Storage Curve, the zero discharge elevation is: Interpolate Stage between... Interpolate Runoff between... 15.00 1.76 15.50 3.15 Stage: 15.29 N.G. (See flood routing calculations for correct 3 yr. stage elevations) Stage_1.x/s PAGE 4 Grove Plaza Boynton Beach, Florida CP&A PROJECT NO. 950404 SFWMD SURFACE WATER MANAGEMENT CALCULATIONS 7) SUMMARY Required Storage: 0.67 ac-ft Soil Storage: 2.73 in ZERO DISCHARGE 3 Yr.-1 Day Storm: 25 Yr.-3 Day Storm: 100 Yr.-3 Day Storm: 2.57 ac-ft 8.16 ac-ft 10.85 ac-ft 15.29 NGVD Stage Elevation 16.47 NGVD Stage Elevation 16.85 NGVD Stage Elevation FLOOD ROUTING 3 Yr.-1 Day Storm: 25 Yr.-3 Day Storm: 15.01 NGVD 16.06 NGVD 0.90 cfs Disch. 1.10 cfs Disch. DATE PRINTED: PREPARED BY: REVISED BY: DATE: 24-Aug-98 dma J. Thiele 12/31/97 dma BMF 1/15/98 dma BMF 2/12/98 dma BMF 2/25/98 dma BMF 3/19/98 Stage_1.xls PAGE 5 Grove Plaza Boynton Beach, Florida 950404 SFWMD EXFILTRATION TRENCH DESIGN CALCULATIONS 1) SITE DATA: 2) STAGE ELEVATIONS: Acreaqe: Percent: From: To: Building: 0.70 Ac. 8.7% 17.30 up Pavement: 4.69 Ac. 58.0% 14.75 16.70 Detention (bottom) 0.13 Ac. 1.6% 12.70 up Detention (side SlOPE 0.50 Ac. 6.2% 12.70 14.70 Open Space: 2.07 Ac. 25.6% 14.00 16.70 Retention: 0.00 Ac. 0.0% 0.00 0.00 TOTAL AREA: 8.09 Ac. 100.0% Total Impervious: 5.390 Average Existing Grade: 16.00 66.63% Average Proposed Grade: 16.00 Ground Water Table: 10.00 Total Pervious: 2.700 Low Inlet Elevation: 14.00 33.37% 3) EXFIL TRATION TRENCH CRITERIA: Length of Trench Provided: Top of Trench: Bottom of Trench: Pipe Invert: Hydraulic Conductivity: Exfiltration Trench Width: Available Soil Storage, SFWMD: 1,350.00 ft. 13.00 NGVD 9.00 NGVD 10.00 NGVD 1.680E-04 cfs/ft.2 - ft. Head 8.00 ft. 8,18 in. 4) COMPUTE STAGE STORAGE: (Without exfiltration trench) Detention Detention Open Staqe: (bottom ) (side slope) Pavement: Space: Retention: Total: 12.00 0.00 0.00 0.00 0.00 0.00 0.00 12.50 0.00 0.00 0.00 0.00 0.00 0.00 13.00 0.04 0.01 0.00 0.00 0.00 0.05 13.50 0.10 0.08 0.00 0.00 0.00 0.18 14.00 0.17 0.21 0.00 0.00 0.00 0.38 14.50 0.23 0.41 0.00 0.10 0.00 0.73 15.00 0.30 0.65 0.08 0.38 0.00 1.41 15.50 0.36 0.90 0.68 0.86 0.00 2.80 16.00 0.43 1.15 1.88 1.53 0.00 4.99 16.50 0.49 1.40 3.68 2.40 0.00 7.97 17.00 0.56 1.65 5.98 3.42 0.00 11.60 17.50 0.62 1.90 8.32 4.45 0.00 15.30 18.00 0.69 2.15 10.67 5.49 0.00 18.99 Exfilstd,xls PAGE 1 ~~~ ,) -. -- ------.- ______..~..___.u_. - - ~- ------ ---_._--~----_. -------- ------------- ----- Grove Plaza Boynton Beach, Florida 950404 SFWMD EXFILTRATION TRENCH DESIGN CALCULATIONS 5) WATER QUALITY: Greater of the following (3A. & 3B.) Store the first inch for the entire site or the amount of 2.5 times the percentage of imperviousness. A. First Inch: V = 1 in. x Total Area x 1 ft./12 in. (The first inch has been accounted for previously with the common roadway system) V = (ac-ft) 0.67 Total (Ac. ): 8.09 B. 2.5 times percent imperv.: 1. Site Area = Total Area - (Lake Area + Bldg. Area) Total (Ac.): Lake: Bldq.: 8.09 0.50 0.70 Site (Ac.): 6.89 2. Impervious Area = Site Area - Pervious Area Site (Ac.): Pervious: Imperv.: 6.89 2.70 4.19 3.2.5 in. x Imperv.lSite x Total Area x 1 ft.l12 in. Imperv.: V=(ac-ft) 4.19 1.02 Therefore, the total required detention is either the First inch or 2.5 times the percent impervious, whichever is greater. If 2.5 times the percent imperviuos is greater than the first inch, the difference between the 2.5 percent and the first inch will be the required detention: Vet) (ac-ft): V(t) (ac-in ): 0.35 4.26 Exfilstd.xls PAGE 2 Grove Plaza Boynton Beach, Florida 950404 SFWMD EXFILTRATION TRENCH DESIGN CALCULATIONS 6) EXFIL TRATION TRENCH COMPUTATIONS: 1. Length= VI { Kx((HxW)+(2xHxDu)-(DuxDu)+(2xHxDs)) + (O.000139xWxDu) } for Du > Ds Length= VI { Kx((2xHxDu)-(DuxDu)+(2xHxDs)) + (O.000139xWxDu) } for Du < Ds Length= VI { C } Where: (K) (cfs/ft.2 - ft. Head) = (V) (Ac-in.) = (H) (ft.) = Hydraulic Conductivity: Volume to be Treated: Depth to Water Table: (Low Inlet Elevation - Water Table) Unsaturated Trench Depth: Saturated Trench Depth: Trench Wid 8.00 ft. (Du) (ft.) = (Ds) (ft.) = (W) (ft.) = V=(Ac-in. ) 4.26 H = (ft.) 4.00 Du = (ft.) 3.00 Ds = (ft.) 1.00 K= 1.68E-04 c 2. Required and Proposed length of trench: Q 0.01258 L = (ft.) 338,69 L=(ft) L=(ft) (Required) (Available) 338.69 370.00 Storage in Trench: V(tr): 0.39 7) SOIL STORAGE: 1. Avg. Depth to Water Table = Avg. Proposed Grade - Water Level Avq. Grade: Water Level: D=(ft. ): 16.00 10.00 6.00 2. Soil Storage (S) = Available Soil Storage x Pervious ArealTotal Area (See C-35, SFWMD VoI.IV) Av. Soil St. Pervious: Total (Ac.): S = (in.): 8.18 2.70 8.09 2.73 DATE PRINTED: DATE PREPARED: DATES REVISED: 24-Aug-98 BY: dma hhb JAT BMF 20-0ct-97 31-Dec-97 25-Feb-98 Exfilstd.xls PAGE 3 "- S C S PRO G R A Ii PROJECT NAME. : GROVE PLAZA REVIEWER . . . : B. Ii. fAY PROJECT AREA . 8.09 ACRES GROUND STORAGE 2.73 INCHES TERMINATION DISCHARGE: 100.00 CFS DISTRIBUTION TYPE. : SFHHD RETURN FREQUENCY . 25.00 YEARS RAINFALL DURATION . 3-DAY 24-HOUR RAINFALL . 11.00 INCHES REPORTING SEQUENCE : STANDARDIZED STAGE STORAGE DISCHARGE (FT) (AF) (CFS) 12.50 .00 .00 l~.OO .40 .25 13.50 .53 .49 14.00 .73 .65 14.50 1.08 .78 15.00 1. 76 .89 15.50 3.15 .98 16.00 5.34 1.07 16.50 8.32 1.15 17.00 11.95 1. 23 17.50 15.65 1. 30 - - - - - - RES E R V 0 I R - - - - - RAIN ACCUH. BASIn ACCUH. ACCUH. INSTANT AVERAGE TIME FALL RunOFF DISCHGE INFLOfl VOLUME OUTFLOW DISCIIGE DISCHGE STAGE (HR) (IN) (IN) (crS) (AF) (Af) (AF) (CFS) (eFS) (FT) .00 .00 .00 .0 .0 .0 .0 .0 .0 12.50 4.00 .27 .00 .0 .0 .0 .0 .0 .0 12.50 8.00 .54 .00 .0 .0 .0 .0 .0 .0 12.50 12.00 .80 .02 .1 .0 .0 .0 .0 .0 12.52 16.00 1.07 .08 .2 .1 .1 .0 .0 .0 12.56 20.00 1. 34 .18 .2 .1 .1 .0 .1 .0 12.62 24.00 1.61 .30 .3 .2 .2 .0 .1 .1 12.69 28.00 2.00 .50 .5 .3 .3 .0 .2 .1 12.81 32.00 2.39 .74 .5 .5 .4 .1 .2 .2 12.93 36.00 2.78 1.00 .6 .7 .4 .3 .3 .3 13.14 40.00 3.17 1. 28 .6 .9 .5 .4 .4 .4 13 .39 44.00 3.56 1. 58 .6 1.1 .5 .6 .5 .5 13.53 48.00 3.95 1. 89 .6 1.3 .6 .7 .5 .5 13.62 52.00 4.44 2.29 1.0 1.5 .7 .8 .6 .6 13.83 56.00 5.46 3.16 2.3 2.1 1.0 1.1 .8 .7 14 .40 58.00 6.29 3.90 3.5 2.6 1.4 1.2 .8 .8 14.71 59.00 6.91 4.45 5.2 3.0 1.7 1.3 .9 .8 14.92 59.50 7. 46 4.95 8.2 3.3 2.0 1.3 .9 .9 15.06 59.75 9.11 6.49 50.2 4.4 3.0 1.4 .9 .9 15.27 60.00 11.16 8.45 63.8 5.7 4.3 1.4 1.0 1.0 15.62 60.50 11.97 9.22 12.6 6.2 4.8 1.4 1.0 , 1.0 15.85 61.00 12.39 9.62 6.6 6.5 5.0 1.5 1.1 1.0 15.91 62.00 12.95 10.16 4.0 6.9 5.3 1.6 ' 1.1 1.1 15.98 64.00 13.63 10.82 2.6 7.3 5.6 1.7 1.1 1.1 16.04 68.00 14.42 11.59 1.6 7.8 5.1 2.1 1.1 1.1 16.06 72.00 14.95 12.11 1.0 8.2 5.7 2.5 1.1 1.1 16.06 SUMHARY INFORIIATION HAXIMUlI STAGE 11M 16.06 FEET 1\T 68.25 \lOURS MAXIMUM DISCHARGE WAS 1.1 eFS AT 68.25 !lOURS ~'q~ ^', ~ ,w -........ S C S PRO G R A H PROJECT NAME. .: GROVE PLAZA REVIEWER .. . : B. H. FAY PROJECT AREA . 8.09 ACRES GROUND STORAGE 2.73 INCIIES TERHIIIAT ION DI SCIIARGE: 100.00 eFS DISTRIBUTION TYPE. : SFHHD RETURN FREQUENCY . 3.00 YEARS RAINFALL DURATION . . : I-DAY H-HOUR RAINFALL . 6.20 INCIIES REPORTING SEQUENCE STANDARDIZED STAGE STORAGE DISCHARGE (FT) (AF) (CFS) 12.50 .00 .00 13.00 .40 .25 13.50 .53 .49 14.00 .73 .65 14.50 l.08 .78 15.00 1. 76 .89 15.50 3.15 .98 16.00 5.34 1.07 16.50 8.32 1.15 17 .00 11.95 l. 23 17.50 15.65 1. 30 - - - - - - RES E R V 0 I R - - - - - RAIN ACCUH. BASIN ACCUH. ACCUH. INSTANT AVERAGE TIME FALL RUNOFF DISC\lGE INFLOK VOLUME OUTFLOK DISC\lGE DISCHGE STAGE (HR) (Ill) (IN) (CFS) (AF) (AF) (AF) (CFS) (CFS) (FT) .00 .00 .00 .0 .0 .0 .0 .0 .0 12.50 4.00 .28 .00 ,,0 .0 .0 .0 .0 .0 12.50 8.00 .85 .03 .3 .0 .0 .0 \ .0 .0 12.52 10.00 1. 32 .17 .8 .1 .1 .0 .1 .0 12.63 11.00 1. 67 .33 1.6 .2 .2 .0 .1 .1 12.74 11.50 1. 98 .49 2.8 .3 .3 . .0 .2 .1 12.86 11.75 2.91 1.10 19.7 .7 .7 .0 .5 .3 13.42 12.00 4.07 1. 98 29.0 1.3 1.3 .0 .8 .6 14.39 12.50 4.52 2.36 6.1 1.6 1.5 .1 .8 .8 14.77 13.00 4.76 2.55 3.2 1.7 1.6 .1 .9 .9 14.87 14.00 5.07 2.82 2.0 1.9 1.7 .2 .9 .9 14.96 16.00 5.46 3.16 1.3 2.1 1.8 .3 .9 .9 15.01 20.00 5.90 3.55 .8 2.4 1.8 .6 .9 .9 15.00 24.00 6.20 3.81 .5 2.6 1.7 .9 .9 .9 14.92 SUMMARY INFORHATION HAXIMUH STAGE HAS 15.01 FEET AT 16.25 \lOURS HAXIHUK DISCIIARGE HAS .9 CFS I\T 16.25 \lOURS WEIR LENGTH WEIR ELEVATION WEIR COEFFICIENT TYPE OF BLEEDER SLOT SLOT INVERT ELEV. ORIFICE HEIGHT ORIFICE BASE WIDTH (- o F'!' 16.2 FT. NGVD 3.13 TRIANGLAR ORIFICE 12.5 FT. NGVD .5 FT. .5 FT. WEIR FLOW IN CFS STAGE WEIR ----------------------------------- BLEEDER TOTAL -------------------------------------------------- -------------------------------------------------- 12.50 0.00 0.00 0.00 13.00 0.00 0.25 0.25 13.50 0.00 0.49 0.49 14.00 0.00 0.65 0.65 14.50 0.00 0.78 0.78 15.00 0.00 0.89 0.89 15.50 0.00 0.98 0.98 16.00 0.00 1.07 1. 07 16.50 0.00 1.15 1.15 17.00 0.00 1. 23 1.23 17.50 0.00 1.30 1.30 18.00 0.00 1.37 1.37 /- EL. /2.50 LWDO M/N/MUMBLEEOERS/ZE ( (~ GROVE PLAZA TOTAL REa'D. STORAGE EXFIL TRATION PARCEL AREA LESS TRENCH STORAGE TRENCH STORAGE EXFILTRATION PARCEL (ac) @ EL.15.00 (ac-ft) (ac-ft) TRENCH (ft) .COMMON ROADWAY 1.67 0.97 0.07 76 A 1.20 0.08 0.05 55 . 8 1.14 0.08 0.05 52 C 0.83 0.06 0.04 38 D 1.23 0.08 0.05 56 E 0.88 0.06 0.04 40 F 1.14 0.08 0.05 52 -- BOYNTON BEACH. FL C P Be A PROJECT NO. 950404 SFWMD EXFllTRATION TRENCH DESIGN CALCULATIONS TOTALS: 8.09 1.41 0.35 370 MIN. ROAD CROWN = 15.00 (NGVD) VOL STORAGE@EL 15.00 = VOL STORAGE IN TRENCH = VOL STORAGE @ EL 15.00 = LESS VOLUME IN TRENCH TOTAL TRENCH LENGTH = TOTAL TRENCH STORAGE = TOTAL SITE AREA = 1.76 ac-ft 0.35 ac-ft 1.41 ac-ft 370 ft 0.35 ac-ft 8.09 ac VOL STORAGE @ EL 15.00 = (1.41 ac-ft . 0.97ae-ft) I (8.09ac . 1.67ae) = PER ACRE (less common roadway) 0.07 ae-ftlae · For the common roadway parcel, exfiltration trench may not be used to store water quality. Water quality must be maintained either in the first inch as detention or in the first half inch in retention. One inch of detention equals 0.67 ac-ft The stage storage volume for the common roadway parcel account for the actual roadway plus the dry detention areas. ':.b........... ,. CXFIL TBLXLS PAGE 1 ( - (- FINISHED GRADE OR PAVED SURFACE ~'7~" r ~~"r ~'74~ ~~~ ~. 'COMPACT SUB GRADE AND "'---BACKFILL ABOVE CULVERT TO Q5i.: MAX. DENSITY <l2'L1FTSI TRENCH LINER CATCH BASIN NON-PERFORATED CULVERT -L CUT FILTER FABRIC a CULVERT AND INSERT BETWEEN PIPE & CULVERT BANO <SUCH THAT BAND CLAMPS TRENCH LINERI SIDE VIEW z :.. i: - ~r:- .. -- . ~ . / ~ t,,;;; L.. "'" CARNAHAN. PROCTOR AND ASSOCIATES, INC. Consulting Engineers . Surveyors . Planners . Land Development Consultants October 21, 1997 Mr. Jerzy Lewicki Planning Department City of Boynton Beach 100 E. Boynton Beach Blvd. Boynton Beach, FL 33425 HAND DELIVERED RE: GROVE PLAZA: master site plan modification Dear Mr. Lewicki: On behalf of our client, we hereby request approval of the attached modified master site plan for the Grove Plaza project. As per your requirements, attached please find the following: 1. This letter of request describing all changes made to the master site plan (12 copies) 2. Letter from Palm Beach County Roadway Production regarding the 5-laning of Lawrence Road (12 copies) 3. Modified master site plan (12 copies) 4. Modified storm water management plan (12 copies) 5. Storm water calculations (12 copies) 6. Revised traffic study (6 copies) 7. Sketch of distances from Parcel A to the existing residences (1 copy) 8. Fee for master site plan modification: $500.00 The modifications which have been made to the master site plan are as follows: 1) Parcel lines have been reconfigured to create a separate common area tract which will accommodate the trunk road and drainage system, and maintain a 200' distance from the property line of the proposed gas station parcel to the existing residences. 2) Parcel A has been modified from 7500 square feet of retail/pharmacy to 2960 square feet of convenience store/gas station. 3) Parcel C has been modified from 4500 square feet of retail to 6540 square feet of retail. 4) Parcel D has been modified from 6500 square feet of retail to 9000 square feet of retail. 5) Site Data and Parking Data tables have been updated accordingly. 6191 West Atlantic Blvd. . P.O. Box 4399 . Margate. FL 33063 . (954) 972-3959 . FAX (954) 972-4178 . Palm Beach (561) 364-0687 6) Proposed turn lanes on Lawrence Road and Hypoluxo Road have been added. 7) Southerly access drive has been modified from one way to two way traffic flow. Please accept this submittal for review at the TRC meeting of November 12th. As always, thank you for your assistance, and I look forward to working with you on this project. Very truly yours, ~Q.~ Donna C. West, P.S.M. Planning Manager l\ismp\olword6ldonnalplatlel\lelboynt.doc ULa-",,-U-::'1 .&. .&. ,; ~~, HI'I ~j ~' CARNAHAN. PROCTOR AND ASSOCIATES, INC. Consultlno [nUU1eers ,Survoyc)r'i Planmm. Land ()l;lvo(npment COrl:llJllanls 1-'.11:": ,~ MEl\~ORANDUM DA'f(.:: October 15, 1997 TO: Mr, William R. Sears, Project EI1&illeet, Roadway Production FROl\I: Jame~ A, Thiele. P.E. HE: Lawrence Ruad (Gateway Boulevard to Hypoluxo Road) P.D. Project No. 95511 t.. Pursuant to our telephone conversalion on this dale, please confinn by signalure below thallhe fullowing is the currcur schedule for the above referenced project: July Bid Date Mf 1998 1 understand from other documentation you have provided us that Lindahl, Browning Fcrrnri & Hellstrom, Inc, have submitted these 35% drawings and that these projects typically commence construction approximately 90 dllYs folluwing the hid date. This cunfirmation is requested to document same to the City of Boynton Beach for our project "Grove Plaza" localed at the Southeast comer of Lawrence Road and Hypoluxo Road. note: the above bid dale is [or Palm Deach County budgeting purposes and is subject to change due to unCorseen circumstances. tV~~4---- . William R. Sears, Project Engineer , .~aJm Beach County Roadwuy Production f - .. '=5 .' . . i JA T:scw ,:" ~ '" ~ I :\...."'IMj.u\~"" .....JIl.,.h, pulnc .. ~ - - i , i .& 7-ELEVEN AT GROVE PLAZA ADJACENT RESIDENCES HYPOLUXO RD. r--" ---- -..- -.... -.... -....-.. --.. --.... - -- - -- --.. -.. --.... -- --.... --- --.. --.. --.. -.... -.... --.. -.... --.. -.... Q a::: w U Z w a::: ;:: . <: -J I . . I . . I ADDENDUM JOB NO. 950~0~A 7-ELEVEN . GROVE PLAZA L.W.D.D. L-18 CANAL 7-ELEVEN AT GROVE PLAZA PARCEL "A" I L__- Ot ai .., N EXISTING RESIDENCE FILE. q.\proIects\sdO~o\sdO~oSk.don ------- I I I I I I I I I I I I -" " " '------- TRACT "G" ----- ---- EXISTING RESIDENCE CMNAHAN~PROCTOR & ASSOCIATES INC. 6191 W. ATLANTIC BLVD., MARGATE, Fl 33063 PHONE (954)972-3959 FAX (954)972-4178 1-. 80' 10-15-97 ADJACENT RESIDENCES SHEET I OF I SHEETS Carnahan · Proctor · Cross [L~1111~lfu @[f 1100~~~~ 011 , TO Consulting Engineers · SUNeyors . Planners Land Development Consultants 6101 West Atlantic Blvd. · Margate, FL 33063 (954) 972-3959 · FAX (954) 972-4178 Web Page: www.carnahan-proctor.com Email: margate@carnahan-proctor.com WE ARE SENDING YOU ~ Attached 0 Under separate cover via--.delivered the following items: o Shop drawings o Copy of letter C Prints C Change order C Plans o Samples o Specifications c DATE NO. THESE ARE TRANSMITTED as checked below: }! For approval 0 Approved as submitted 0 For your use 0 Approved as noted . As requested 0 Returned for corrections 0 For review and comment r L.J 0 FOR BIDS DUE 19 REMARKS r:J Resubmit_copies for approval o Submit_copies for distribution o Return_corrected prints C PRINTS RETURNED AFTER LOAN TO US COPY TO SIGNED~a.J:2. ~ " enclosures are not as noted. f{indfy notify us at onclft.