1155 Atlantic Blvd urban farm site dev 2014City of Atlantic Beach APPLICAjN NUMBER
Building Department LDate
LassignedbBuildin;Department.)
800 Seminole Road/" v
Atlantic Beach, Florida 32233-5445
Phone (904) 247-5826 • Fax (904) 247-5845
E-mail: building-dept@coab.us
City web -site: http://www.coab.us
APPLICATION REVIEW AND TRACKING FORM
Property Address:
Applicant: C' Ilk -
Project:
/I/Z-
,b,j22-
DW
nt review required Yes LNo
Building
Planning & Zoning
Tree Administrator
ublic Works
Public Safety
Fire Services
Review or Receipt
Other ency Review rmit Required of Permit Verified B
Florida Dept. of Environmei tal Protection
Florida Dept. of Transportation
St, Johns River Water Man- gement District
Army Corps of Engineers
Division of Hotels and Res: irants
Division of Alcoholic Beverages and Tobacco
Other.
Reviewing Department
(Circle one.)
BUILDING
PLANNING & ZONING
TREE ADMIN.
PUBLIC WORKS
PUBLIC UTILITIES
PUBLIC SAFETY
FIRE SERVICES
Revised 05114!09
APPLICATION STATUS
First Review:*proved. ❑Denied.
Comments: �i
Date
Date
Reviewed by:_
Second Review: [-JApproved as revised. []Denied.
Comments:
Reviewed by: Date:
Thirdevi weR []Approved as revised. ❑Denied.
Comments:
Reviewed by: Date:
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Comp. By:
Job No.
#Abbe\,;,, Checked By:
CIVIL ENCINLEKS. INC. J Dale:
Atlantic Beach Urban Farms Build Out Conditions
Atlantic Beach, Florida
Wet Detention Treatment Calculations
8
Required Treatment Volume (Wet Detention):
Criteria 1 - 1.0 inch of runoff over the entire drainage area
Criteria 2 - 2.5 inches of runoff over the impervious area (excluding water bodies)
GAA
14004
GAA
08-21-14
Criteria 1 < Criteria 2, therefore Treatment Vol. Required = 0.153 ac, -ft.
Required Permanent Pool Volume (Wet Detention):
Required Input
Criteria
Treatment
Treatment
Treatment
Criteria Area
Area
Depth
Depth
Volume (TV)
(ac)
(af)
(in)
(ft)
(ac -ft)
1.13
49,223
1.0
0.083
Criteria 1
0.73
32 000
2.5
0208
Criteria 2
GAA
14004
GAA
08-21-14
Criteria 1 < Criteria 2, therefore Treatment Vol. Required = 0.153 ac, -ft.
Required Permanent Pool Volume (Wet Detention):
Required Input
ac. -ft.
ac. -ft.
ac. -ft.
ac. -ft.
Does the pond have a littoral zone (y/n)?
' n
Residence Time - RT (days)
' 21
Drainage Area to SWMF - DA (acres)
' 1.13
Runoff Coefficient - C
= 0.60
Wet Season Rainfall Depth - R (in)
= 30
Length of Wet Season - WS (days)
= 153
Correction Factor - CF (in/ft)
= 12
Permanent Pool Volume (PPV)
Source: Applicants Handbook - Regulation of Stormwater Management Systems EQ 29-4 SJRWMD
PPV =[ (DA)(C)(R)(RT)] / [(WS)(CF)]
Permanent Pool Volume Required = 0.23 ac -ft
Provided Storage:
Stage vs. Area/Storage Relationship:
ac. -ft.
ac. -ft.
ac. -ft.
ac. -ft.
100 %
le, 13
11�
Elevation
Area
Area
PPV Storage
TV Storage
f (ft)
(ft 2)
(acres)
(ac -ft)
(ac -ft)
y
-2.0
0 `—
� ��
0.00
Bottom
3.0
2.060
0.047
0.12
Change to 3:1SS
500
4,247
0.097
0.26
0.00
NWL
5,128
0.118
0.07
1/2 TV Elevation
6,010
0.138
0.1.5
Weir Elevation
8.0
8,315
0.191
0.95
TOB
1/2 TV Calculations:
112 Required TV = 0.08 ac. -ft.
Obtained by dividing required TV by 2
112 Required TV = 0.08 ac. -ft.
Obtained from stage storage realtionship above
Treatment Volume Summary:
Required Treatment Volume
Design Treatment Volume =
Permanent Pool Volume Summary:
Required Permanent Pool Volume =
Design Permanent Pool Volume =
0.153
ac. -ft.
ac. -ft.
ac. -ft.
ac. -ft.
100 %
le, 13
11�
0.153
0.233
0.263
Mean Depth of Pond:
Mean Depth (MD) = PPV I Pond Area @ Control Elevation (AP)
MD must be between 2- and 8 -feet
PPV = 0.26 ac -ft
Ap = 0.10 ac
MD= 2.70 ft
t1:47AMatY21M4
08-21-14 Pond Wet Det at build out.xls -
EASEMENT (O.R V 6028. P"".
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CITY OF ATLANTIC BEACH
800 Seminole Road
Atlantic Beach, Florida 32233-5445
904-247-5800
Fax 904-247-584
SITE DEVELOPMENT PERMIT (for filling, grading or topographically altering land)
PLEASE SUBMIT (2) COMPLETE SETS OF PLANS WITH APPLICATION.
Date '11 1, 11 if
/ PERMIT#
Job Address (I» A+ ( e, ", f C ISSUED BY THE CITY
Permitee: I�. o bir
. n S N e `-? ►' �an+r tom'► L (-G
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Permittee Address: Ir rnD ��..I.l Y✓) c.� r .n c. T1-5
Telephone # `% ) 7 `%-3-7
Email Address �iri,it.� �( ��'S r� 1�e Crv-v1LCk-,_{"'. r1� t Fax Number: `�`� `f "2�1���7
Requesting Permission to commence site development involving the following activity: G C 0 54r"J c- f 0..
�C,,c. t " -Je-+ &-hatidiso✓) co,)J 4 DArK�✓1c. e1-,S^ec+-
Location: (Reference to Cross -Street) R P c.;
The following permits have been submitted >� Tree Removal Demolition
THIS APPLICATION INCLDES ALL INFORMATION REQUIRED BY THE CITY'S SITE DEVELOPMENT PERMIT
CHECKLIST` —4Must be signed by Applicant)
al (q) q
1. Applicant declares that prior to filing this application he has ascertained the location of all existing
utilities, both aerial and underground and the accurate locations are shown on the sketches.
2. Any work proposed in City rights of way or easements shall be subject of a separate Right of Way and
Easement Permit Application.
1 All work shall meet City of Atlantic Beach, City of Jacksonville or Florida Department of Transportation
Standards and be performed under the supervision of " c v'� G t »L I (Contractor's
Project Superintendent) located at L77' PG, 1- C,-. HvJc,:.j . 3 tzcY7 Telephone *-1o4- -?,;y - 4 3i'Z
4. Calculations showing any increase in impervi2us area on owner's lot and 1 or in the cit y Right of Wa j are to
be included with this application .
5. All city property shall be restored to its original condition as far as practical, in keeping with city
specifications and the manner satisfactory to the city.
6 This permittee shall commence actual construction in good faith within I C days. If the beginning
date is more than 60 days from date of permit approval, then permittee must review the permit with the
Director of Public Works to make sure no changes have occurred in the area that would affect the permitted
construction.
7. The Director of Public Works shall be notified twenty-four (24) hours prior to starting work and again
immediately upon completion.
OWNER f
Signe5me
Date:
Befor]�day of in the Count of Duval
State ida, has personally appeared br k r --I, e
Notary Public at Large, State of FI rids, County fpuval. — T
My commission expires: O L4 �U % 1 to Personally Known:
4ZS — Produced Identification.
y
Notary Public State of FloridaKimberly A BillingsleyMy Commission EE 194120Expires 04/3012016
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City of Atlantic Beach
Site Development Permit Checklist''j'
Provide 2 sets of Site Plans including Site Management, Erosion Control and Stormwater
Plans. (for filling, grading, excavating or topographically altering land)
�7 Cover Page:
• Address of project
• Printed name, contact info, date and signature of person responsible for the plans.
-4�i Site Plan (Legal Survey):
• Driveways, walkways, patios...
• Impervious Surface Area (lot coverage) calculations — tabulation of all impervious areas required
• Including location of all easements on property.
• All existing and proposed structures
• Any jurisdictional wetlands or coastal construction control line, water bodies, any required buffers or significant
environmental features.
Erosion & Sediment Control Plans (Can be included on Site Plan/Survey):
• Silt fence location, construction detail and maintenance plan.
• Installation must be inspected and approved by Public Works before any site work is started. Site Operator
or Construction Supervisor must be present for initial inspection.
• Inlet protection (if existing storm water inlets are adjacent to property.
'0 Construction Site Management Plan (Can be included on Site Plan/Survey):
• Location of any proposed demolition
• Onsite & offsite parking for construction workers
• Location of temporary fencing with height and screening indicated
• Location of (Atl. Beach franchise approved) dumpster. Location of construction trailer & chemical toilet.
COAB Code of Ordinances — Sec. 6-18
❑ Tree removal permit
• An approved site development permit is required if land is being filled and/or re -graded prior to the issuance of a
Tree removal permit.
❑ Demolition permit
• An approved site development permit is required if land is being filled and/or re -graded prior to the issuance of a
Tree removal permit.
E] Drainage plan
• On-site water storage calculations (required if increasing lot impervious surface coverage by 400 SF or more)
• Plan for providing required storage.
(Contact Public Works for information on On -Site Storage requirements for added impervious surface area).
City of Atlantic Beach APPLICATION NUMBER
*i
S Building ®apartment (To be assigned by the Building Department.)
"�`i 800 Seminole Road
�:J Atlantic Beach, Florida 32233-5445_. " — /000-31
Phone (904) 247-5826 • Fax (904) 24 -5845
E-mail: building-dept@coab.usAUG 2014Date routed: V
City web -site: http://www.coab.us
APPLICATION REVI TRACKING FORM
1155
Property Address: Department review required lies No
Building
Planning & Zoning
Tree Administrator
u Ts orks
Publici i ies
Pu is 3,a.e y
Fire Services
Review fee $ Dept Signature
Applicant: _WbAr) F-GLYr -) S
Project: f5ltr'
Other Agency Review or Permit Required Review or Receipt Date
of Permit Verified By
Florida Dept. of Environmental Protection
Florida Dept. of Transportation
St. Johns River Water Management District
Army Corps of Engineers
Division of Hotels and Restaurants
Division of Alcoholic Beverages and Tobacco
Other:
APPLICATION RTATIIR
Reviewing Department
First Review:
Approved.
❑Denieu.
(Circle one.)
Comments:
7�
BUILDING
PLANNING & ZONING
Reviewed by:
Date: 7,3���
TREE ADMIN.
Second Review:A
❑ pproved as revised.
❑Denied.
Comments:
TILITPY
tC
AF
Reviewed by:
Date:
FIRE SERVICES
Third Review:
❑Approved as revised.
❑Denied.
Comments:
Reviewed by:
Date:
Revised 05/14/09
Pbb
e
CIVIL ENGINEERS, INC.
August 12, 2014
City of Atlantic Beach
c/o Jenny Walker
800 Seminole Road
Atlantic Beach, FL 32233
Re: Atlantic Beach Urban Farms
ACE Project No. 14004
Dear Jenny,
HUTT
� AUG 12 2014
Enclosed please find two sets of civil engineering plans, one set of drainage calculations
and a construction management plan, a check for $125.00 for the review fee and a signed
Site Development permit application form.
Also attached is a copy of the approved SJRWMD permit. The FDOT Driveway permit is
currently in review and their final approval will be held pending final approval by the City.
Please feel free to contact me if you have any questions or require additional information.
Sincerely,
Abbey Civil Engineers, Inc.
Gary A. Abbey, P.E.
President
Cc: Susan King
Steve Cissel (w/ 2 sets of plans)
2046 Cherokee Drive FI. Certificate of Authorization 9428 904-247-1733 Office
Neptune Beach, Florida 32266 gary@abbeycivil.com 904-247-3464 Fax
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located or occurs. You will need to pi ovide the District with the information specified in rule 62-
330.340, Florida Administrative Ccde (F.A.C.). Generally, this will require you to complete and
submit Form 62-330.340(1), "Request to Transfer Permit," available at
http://www.floridaswater.com/permi t.ng/permitforms.htm1.
Please note that a permittee is liab ? for compliance with the permit before the permit is
transferred. The District, therefore. recommends that you request a permit transfer in advance
in accordance with the applicable riles. You are encouraged to contact District staff for
assistance with this process.
Thank you and please let us know if you have additional questions. For general questions
contact e-permit@sjrwmd.com or (386) 329-4570.
Sincerely,
WWR
Margaret Daniels, Bureau Chief
Bureau of Regulatory Support
St. Johns River Water Managemert District
4049 Reid Street
Palatka, FL 32177-2529
(386) 329-4570
Enclosures: Permit
cc: District Permit File
Engineering Gary Abbey
Consultant: 2046 Cherokee Dr
Neptune Beach. FL 32266-1533
ST. JOHNS RIVER WATER MANAGEMENT DISTRICT
Post Office Box 1429
Palatka, Florida 32178-1429
PERMIT NO. IND -031-138709-1 DATE ISSUED: July 22, 2014
PROJECT NAME: Atlantic Beach Urban Farms
A PERMIT AUTHORIZING:
Construction of a Stormwater Management System with stormwater treatment by Wet Detention
for Atlantic Beach Urban Farms, a 1.27 - acre project to be constructed as per plans received by
the District on July 7, 2014.
LOCATION:
SECTION(S): 18
Duval County
ISSUED TO:
Atlantic Beach Urban Farms. LLC
850 6th Ave S Ste 400
Jacksonville Beach, FL 32250-4256
Robbins Nest Farm, LLC
1560 Selva Marina Dr
Atlantic Beach, FL 32233
TOWNSHIP(S): 2S RANGE(S): 29E
Permittee agrees to hold and save te St. Johns River Water Management District and its
successors harmless from any and all damages, claims, or liabilities which may arise from
permit issuance. Said application, including all plans and specifications attached thereto, is by
reference made a part hereof.
This permit does not convey to peirnittee any property rights nor any rights or privileges other
than those specified herein, nor re''eve the permittee from complying with any law, regulation or
requirement affecting the rights of ,)ther bodies or agencies. All structures and works installed
by permittee hereunder shall remain the property of the permittee.
This permit may be revoked, modit ed or transferred at any time pursuant to the appropriate
provisions of Chapter 373, Florida :statutes.
PERMIT IS CONDITIONED UPON:
See conditions on attached "Exhibit A", dated July 22, 2014
AUTHORIZED BY: St. Johns River Water Management District
Division of Regulatory Engineering and Environmental Services
By:
David Miracle
Service Center Director
"EXHIBIT A"
CONDITIONS FOR ISSUANCE OF PERMIT NUMBER IND -031-138709-1
Atlantic Beach Urban Farms. LLC, Susan King
DATED July 22, 2014
1. The proposed project must be constructed and operated as per plans and calculations
received by the District on JL,,ly 7, 2014.
2. This permit for construction will expire five years from the date of issuance.
3. At a minimum, all retention and detention storage areas must be excavated to rough grade
prior to building construction (Y placement of impervious surface within the area to be
served by those facilities. To prevent reduction in storage volume and percolation rates, all
accumulated sediment must bre removed from the storage area prior to final grading and
stabilization.
4. All activities shall be implem<?rted following the plans, specifications and performance
criteria approved by this perrrir. Any deviations must be authorized in a permit modification
in accordance with Rule 62-330.315, F.A.C. Any deviations that are not so authorized may
subject the permittee to enfe cement action and revocation of the permit under Chapter
373, F.S.
5. A complete copy of this perrriie shall be kept at the work site of the permitted activity during
the construction phase, and shall be available for review at the work site upon request by
the District staff. The permittee shall require the contractor to review the complete permit
prior to beginning constructic:,ri.
6. Activities shall be conducted rr. a manner that does not cause or contribute to violations of
state water quality standards. Performance-based erosion and sediment control best
management practices shall be installed immediately prior to, and be maintained during
and after construction as needed, to prevent adverse impacts to the water resources and
adjacent lands. Such practicr: � shall be in accordance with the State of Florida Erosion and
Sediment Control Designer i:.n J Reviewer Manual (Florida Department of Environmental
Protection and Florida Depart:rient of Transportation June 2007), and the Florida
Stormwater Erosion and Sedimentation Control Inspector's Manual (Florida Department of
Environmental Protection, Nor point Source Management Section, Tallahassee, Florida,
July 2008), which are both incorporated by reference in subparagraph 62-330.050(9)(b)5,
F.A.C., unless a project-spe,::ific erosion and sediment control plan is approved or other
water quality control measur-s are required as part of the permit.
7. At least 48 hours prior to bec;ii,ning the authorized activities, the permittee shall submit to
the District a fully executed Form 62-330.350(1), "Construction Commencement
Notice,"[10-1-13], incorporated by reference herein
(http://www.firules.org/Gatev,a,i/reference.asp?No=Ref-02505), indicating the expected
start and completion dates. A copy of this form may be obtained from the District, as
described in subsection 62-330.010(5), F.A.C. If available, an District website that fulfills
this notification requirement may be used in lieu of the form.
8. Unless the permit is transfer - J under Rule 62-330.340, F.A.C., or transferred to an
operating entity under Rule (,2-330.310, F.A.C., the permittee is liable to comply with the
plans, terms and conditions of the permit for the life of the project or activity.
9. Within 30 days after comple-dng construction of the entire project, or any independent
portion of the project, the perrnittee shall provide the following to the Agency, as applicable:
1. For an individual, private single-family residential dwelling unit, duplex, triplex, or
quadruplex — "Construction Completion and Inspection Certification for Activities
Associated With a Private Single -Family Dwelling Unit' [Form 62-330.310(3)1; or
2. For all other activities -- "As -Built Certification and Request for Conversion to
Operational Phase" [r orm 62-330.310(1)].
3. If available, an Agency website that fulfills this certification requirement may be
used in lieu of the form
10. If the final operation and maintenance entity is a third party:
1. Prior to sales of any !ot or unit served by the activity and within one year of permit
issuance, or within 30 clays of as -built certification, whichever comes first, the
permittee shall submit, as applicable, a copy of the operation and maintenance
documents (see sections 12.3 thru 12.3.3 of Volume 1) as filed with the Department
of State, Division of Corporations and a copy of any easement, plat, or deed
restriction needed to operate or maintain the project, as recorded with the Clerk of
the Court in the County in which the activity is located.
2. Within 30 days of suhmittal of the as- built certification, the permittee shall submit
"Request for Transfe of Environmental Resource Permit to the Perpetual Operation
Entity" [Form 62-330 31 0(2)] to transfer the permit to the operation and
maintenance entity, along with the documentation requested in the form. If
available, an Agency website that fulfills this transfer requirement may be used in
lieu of the form.
11. The permittee shall notify the District in writing of changes required by any other regulatory
District that require changes to the permitted activity, and any required modification of this
permit must be obtained prior to implementing the changes.
12.This permit does not:
1. Convey to the permittee any property rights or privileges, or any other rights or
privileges other than t"rose specified herein or in Chapter 62-330, F.A.C.;
2. Convey to the permittee or create in the permittee any interest in real property;
3. Relieve the permittee from the need to obtain and comply with any other required
federal, state, and loc:ai authorization, law, rule, or ordinance; or
4. Authorize any entrance upon or work on property that is not owned, held in
easement, or control�ed by the permittee.
13. Prior to conducting any activities on state-owned submerged lands or other lands of the
state, title to which is vested in the Board of Trustees of the Internal Improvement Trust
Fund, the permittee must rece ve all necessary approvals and authorizations under
Chapters 253 and 258, F.S. Written authorization that requires formal execution by the
Board of Trustees of the IntE!n al Improvement Trust Fund shall not be considered received
until it has been fully executed.
14. The permittee shall hold and gave the District harmless from any and all damages, claims,
or liabilities that may arise by reason of the construction, alteration, operation,
maintenance, removal, aband mment or use of any project authorized by the permit.
15. The permittee shall notify the District in writing:
1. Immediately if any previously submitted information is discovered to be inaccurate;
and
2. Within 30 days of any Conveyance or division of ownership or control of the property
or the system, other than conveyance via a long-term lease, and the new owner
shall request transfer of the permit in accordance with Rule 62-330.340, F.A.C.
This does not apply to the sale of lots or units in residential or commercial
subdivisions or condominiums where the stormwater management system has
been completed and cc nverted to the operation phase.
16. Upon reasonable notice to the permittee, District staff with proper identification shall have
permission to enter, inspect, sample and test the project or activities to ensure conformity
with the plans and specifications authorized in the permit.
17. If any prehistoric or historic a:-: facts, such as pottery or ceramics, stone tools or metal
implements, dugout canoes, any other physical remains that could be associated with
Native American cultures, or early colonial or American settlement are encountered at any
time within the project site area, work involving subsurface disturbance in the immediate
vicinity of such discoveries shall cease. The permittee or other designee shall contact the
Florida Department of State, Civision of Historical Resources, Compliance and Review
Section, at (850) 245-6333 0t (800) 847-7278, as well as the appropriate permitting agency
office. Such subsurface wor�::3hall not resume without verbal or written authorization from
the Division of Historical Resources. If unmarked human remains are encountered, all work
shall stop immediately and ratification shall be provided in accordance with Section
872.05, F.S.
18.Any delineation of the extent: of a wetland or other surface water submitted as part of the
permit application, including :dans or other supporting documentation, shall not be
considered binding unless a specific condition of this permit or a formal determination
under Rule 62-330.201, F.A , provides otherwise.
19. The permittee shall provide :-outine maintenance of all components of the stormwater
management system to rem;;ve trapped sediments and debris. Removed materials shall be
disposed of in a landfill or other uplands in a manner that does not require a permit under
Chapter 62-330, F.A.C., or cause violations of state water quality standards.
20. This permit is issued based on the applicant's submitted information that reasonably
demonstrates that adverse water resource -related impacts will not be caused by the
completed permit activity. If my adverse impacts result, the District will require the
permittee to eliminate the ca.is.e, obtain any necessary permit modification, and take any
necessary corrective actions• to resolve the adverse impacts.
21. A Recorded Notice of Environmental Resource Permit may be recorded in the county
public records in accordance with Rule 62-330.090(7), F.A.C. Such notice is not an
encumbrance upon the grope_ rcy.
22. No work is authorized in, on or over wetlands or surface waters.
23. The operation and maintenance entity shall inspect the stormwater or surface water
management system once within two years after the completion of construction and every
two years thereafter to determine if the system is functioning as designed and permitted.
The operation and maintenance entity must maintain a record of each required inspection,
including the date of the inspection, the name, address, and telephone number of the
inspector, and whether the system was functioning as designed and permitted, and make
such record available for inspection upon request by the District during normal business
hours. If at any time the system is not functioning as designed and permitted, then within
14 days the entity shall submit an Exceptions Report to the District, on form number 40C-
42.900(6), Exceptions Report for Stormwater Management Systems Out of Compliance.
Stormwater Calculations
Atlantic Beach Urban Farms
1155 Atlantic Boulevard
Atlantic Beach, Florida
Prepared for:
Atlantic Beach Urban Farms, LLC.
Prepared By:
Abbey Civil Engineers, Inc.
2046 Cherokee Drive
Neptune Beach, Florida 32266
904-247-1733
904-247-3464 Fax
abbeycivil@comcast.net
ACE Project No. 14004
State of Florida Certificate of Authorization No. 9428
f�Abbpy
CIVIL ENGINEERS. I.
Gary A. Abbey, P.E.
FI. Reg. No. 56819
- � C
Date:
Table of Contents
Item No. Description
1 Project Narrative
2 Vicinity Map and Aerial Map
3 40C-42 Stormwater Treatment Calculations
4 25yr, 3yr & Mean Annual SCS Routing/Input Data used in
the ICPR modeling
Attachments:
A. Table 1 — Runoff Curve Numbers
B. Figure 7 - Time of Concentration - Slope/Velocity for Overland Flow
C. USGS Soil Survey for Duval County — map and soil description
Project Narrative:
Introduction — The proposed project (1.27 acres) is to construct a new greenhouse
building and parking lot. The new construction will require retention and treatment of the
stormwater runoff to meet SJRWMD and City of Atlantic Beach (COAB) requirements.
Stormwater Treatment & Attenuation — The St Johns River Water Management
(WMD) requires stormwater treatment and attenuation to be in accordance with Chapter
40C-42 FAC and the COAB will accept the conditions of the SJRWMD permit criteria.
The eventual drainage outfall for the stormwater management facility (SMF) will be into
an existing COAB roadside swale which flows west along West 1St Street and eventually
to the Intracoastal Waterway. The peak runoff for predevelopment and postdevelopment
conditions was calculated using the SCS method. A summary of the routing results is
provided herein with the ICPR input/output data. The retention pond for this project has
been over -sized for a maximum of 33, 000 sf of impervious area to accommodate
possible future expansion of the greenhouse operations.
Existing Conditions - The project previously had a warehouse building and two
habitable structures. The site is currently vacant and most vertical structures and
concrete pads have been removed. There are several trees remaining on the site that
will be preserved to the extent possible. The existing site runoff generally flows from the
east toward the northwest and southwest. There is no visual evidence of onsite or
adjacent offsite flooding.
Tailwater Conditions — The tailwater level (Boundary conditions) assumptions used in
the stormwater model are based on the existing swale on West 1St Street flowing full at
approximately 15" deep.
Soil & Erosion Control — The engineering plans and notes indicate the requirement for
placement of silt fencing and hay -bale. barriers to prevent the discharge of turbid waters.
Additionally, there are notes in the plans that direct the site contractor to sod, seed or
mulch all disturbed areas so that a permanent vegetative cover exists over all pervious
surfaces. Wind-borne dust control shall also be monitored by the Contractor daily to
minimize adverse impacts to neighboring owners.
Dewatering — Dewatering may be required to construct the utility lines and stormwater
treatment facilities. Discharged water from this process will be impounded in a settling
basin, located near the center of the site, or routed through a gravel settling chamber
prior to discharge from the site, or by such methods as may be determined by the site
contractor. All required testing of the groundwater discharge will be performed by the site
contractor. The rate of dewatering shall not exceed the consumptive use permit
threshold.
Operation and Maintenance Entity (OME) — The OME shall be the Property Owner,
Atlantic Beach Urban Farms, LLC or assigned designee by official transfer. The
maintenance of the stormwater treatment system shall consist of maintaining a
permanent vegetative cover over all pervious surfaces, routine mowing and bagging of
the debris, periodic inspection and cleaning of the pond banks and outflow control
structure to remove debris and sediment.
Construction Sequence — The project will be built in this general order;
1. Survey stake out of clearing and demolition limits
2. Construct silt fences, tree protection barricades and erosion control measures
3. Clearing of development areas
4. Rough grading of site, construct retention basin and parking lot
5. Underground utility installation and new building construction
6. Fine grading for pavement, swales and landscaping
7. Final paving and landscaping
8. Final inspections and approvals
Construction Traffic — Construction traffic shall enter and leave the site from the
Atlantic Boulevard or West 1" Street frontage. All public road surfaces adjacent to the
site shall be swept or cleaned as needed to prevent the accumulation of sediment and
debris on existing roads.
Stockpile Areas — Stockpile areas shall be placed at least 10 feet away from any areas
where runoff from the stockpile could leave the project development area. Extensive silt
fencing shall be constructed around any piles that may have significant sloughing of its
banks during a storm event.
End
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AbbeyCIVi I. EtiGi N ERi. INC.
Atlantic Beach Urban Farms
Atlantic Beach, Florida
Comp. By: GAA
Job No. 14004
Checked By: GAA
Date: 06-20-14
Build Out Conditions
Wet Detention Treatment Calculations
Required Treatment Volume (Wet Detention)
Criteria 1 - 1.0 inch of runoff over the entire drainage area
Criteria 2 - 2.5 inches of runoff over the impervious area (excluding water bodies)
Criteria
Treatment
Treatment
Treatment
Criteria Area Area
Depth
Depth
Volume (TV)
(ac) (6f)
(in)
(ft)
(ac -ft)
1.27 55,x41
1.0
0.083
`r 106 Criteria 1
0.73 32.(%,0
2.5
0.208
0 ;5J Criteria 2
Criteria 1 < Criteria 2, therefore Treatment Vol. Required = 0.153 ac. -ft.
Required Permanent Pool Volume (Wet Detention)
Required Input
Does the pond have a littoral zone (y/n)? = n
Residence Time - RT (days) 21
Drainage Area to SWMF - DA (acres) _ 1.27
Runoff Coefficient - C = 0.70
Wet Season Rainfall Depth - R (in) = 30
Length of Wet Season - WS (days) = 153
Correction Factor - CF (in/ft) = 12
Permanent Pool Volume (PPV)
Source: Applicants Handbook - Regulation of Stormwater Management Systems EQ 29-4 SJRWMD
PPV =[ (DA)(C)(R)(RT)l / [(WS)(CF)l
Permanent Pool Volume Required = 0.31 ac -ft
Provided Storage:
Stage vs. Area/Storage Relationship:
Elevation
Area
Area
PPV Storage
TV Storage
(ft)
(tt')
(acres)
(ac -ft)
(ac -ft)
-2.0
640
0.015
0.00
Bottom
3.0
3,354
0.077
0.23
5.00
4,440
0.102
0.41
0.00
NWL
f'..65
5,146
0.118
0.07
1/2 TV Elevation
30
5,853
0.134
0.15
Weir Elevation
8.0
7,700
0.177
TOB
1/2 TV Calculations:
' 1/2 Required TV = 0.08 ac. -ft.
Obtained by dividing required TV by 2
" 1/2 Required TV = 0.08 ac. -ft.
` Obtained from stage storage realtionship above
Treatment Volume Summary:
Required Treatment Volume =
Design Treatment Volume =
Permanent Pool Volume Summary:
Required Permanent Pool Volume =
Design Permanent Pool Volume =
0.1530 ac. -ft.
0.1536 ac. -ft. 100%
0.3054 ac. -ft.
0.4082 ac. -ft. 134%
Mean Depth of Pond:
Mean Depth (MD) = PPV / Pond Area @ Control Elevation (AP)
" MD must be between 2- and 6 -feet
PPV = 0.41 ac -ft
Ap = 0.10 ac
MD= ft
06-20-14 Pond Wel Det at build out.xls
+a:u ayt Inrzau
be
CIVIL L\bCFI<\C...J
Atlantic Beach Urban Farms
Atlantic Beach, Florida
Comp. By: GAA
Job No. 14004
Checked By: GAA
Date: 06-20-14
Build Out Conditions
Wet Detention Treatment Calculations
Bleed Down Orifice Sizing Calculations:
Determine Flow Rate to Drain 1/2 Treatment Volume within 24-30 hours:
Q=(TV)/(2*t*CF)
where: Q = Rate of Discharge (cfs)
TV = Treatment Volume
t = time to drain 1/2 the treatment volume (24-30 hrs)
CF = 43,560/3,600 = 12.1
TV* = 0.15 Ac -ft
t= 2�0 hrs
Qd.in = 0.04 cfs
Determine Ground Water Flow Rate into Pond:
Seasonal High Water influence on the average discharge rate (Q) required for the bleed down:
QGw= K*i*A
where:
Q =inflow c.f.s.
K = soil permeability (hydrologic Group B/D) = 1.50 ft/hr
i = hydraulic gradient = 0.01 ft/ft
A = Area of influence (perimeter (p) * height of drawdown (h))
p= perimeter of influence
In = ( Average Seasonal Water Table - Normal Water Table)
Determine Total Required Capacity:
Qtotal = QGW + Qdrain
Qtotal = 0.04 c.f.s.
Bleed Down Orifice Sizing Calculations:
Determine Depth of Water used to Size Orifice:
SWMF - 1
SHWT=
6 ft.
SLWT=
4 ft.
NWL=
ft.
h =
0.0 ft.
p
(ft)
QGw = 0.000
c.f.s.
Determine Total Required Capacity:
Qtotal = QGW + Qdrain
Qtotal = 0.04 c.f.s.
Bleed Down Orifice Sizing Calculations:
Determine Depth of Water used to Size Orifice:
h=(h1+h2)/2
Where: h1 = Depth of water between the top of the treatment volume and the orifice flow line.
h2 = Depth of water between the stage at which half the treatment volume has been
released and the orifice flow line
Orifice EI. 1/2 TV El. Weir EI. ht h2
Design h
(ft) (ft) (ft) (ft) (ft)
(ft)
5.0 5.7 6.30 1.3 0.7
1.0
Determine Orifice Size:
Orifice Size Equation: A = ( Q )/ (C *(2*g*h)A.5)
Where: Q = Required Capacity
0.04 cfs
C = Orifice Discharge Coefficient
0.6
g = acceleration of gravity
32.2 (ft/s2)
h = Design h (see above)
1.0 ft
*A = Orifice Area
0.01 ft,
* Note: Minimum Orifice Area = 6 int
1.12 int
Calculate Orifice Diameter:
Orifice Diameter = (4xOrifice Area / pi)0.5
Orifice Diameter= 1.195 in
If less than 2.76" diameter, use 2.8" diameter orifice.
06-20-14 Pond Wet Det at btfiOxx"isse: inch dia. Orifice =
6.2 int
10:01 AM 06/20/14
Hydraflow Plan View
Project file: ABUF.stm
s 1 -
(', !F—';
OF file: JacksonvilleZone4.IDF
rj-(R ,CiTt; t_S
No. Lines: 4
07-07-2014
Hydraflow FL -DOT report
Page 1
Line
No
To
Line
Type
of
struc
n -
value
Len
Drainage Area
Time
of
conc
Time
of
flow
in
Inten
(1)
Total
CA
Add
Q
Inlet
I elev
j Elev of HGL
1
Rise
HGL
Actual
Date: 07-07-201
C1 = 0.2
C2 = 0.8
Elev of Crown
--
Span
Pipe
Full Flow
Frequency: 5 yrs
Total
Elev of Invert
Proj: ABUF.stm
C3 = 0.9
sect
flow
Incre-
Sub-
total
Sum
CA(ft)
Q
Up
Down
Fall
Size
Slope
7VelCfapment
(ac)
(ac)
(min)
(min)
(in/hr)
(cfs)
(ft)
(ft)
(ft)
(ft)
(in)
M
(
Line description
4
3
DrGrt
0.013
86.0
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
10.00
1.21
6.1
0.15
0.00
0.93
8.00
7.76
5.50
4.50
7.70
5.20
4.20
0.06
0.30
12
12
Cir
0.07
0.35
1.19
2.68
0.93
2.10
3
2
DrGrt
0.013
48.0
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
11.21
0.42
5.9
0.26
0.00
1.51
8.30
7.66
5.20
4.20
7.57
5.00
4.00
0.09
0.20
12
12
Cir
0.18
0.42
1.93
2.93
1.51
2.30
2
j
1
DrGrt
0.013
80.0
0.00
0.00
0.000.00
0.00
0.00
0.00
0.00
0.00
11.62
0.73
j
5.8
0.38
0.00
2.23
8.30
7.50
15.25
14.00
7.40
j 5.05
3.80
0.10
0.20
15
15
Cir
0.12
0.25
1.82
2.63
2.23
! 3.23
1
End
DrGrt
0.013
28.0
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
12.36
0.21
5.7
0.48
0.00
2.77
8.00
7.28
4.85
3.60
7.23
4.75
3.50
0.05
0.10
15
15
Cir
0.18
0.36
2.25
3.14
2.77
3.86
NOTES: Intensity = 145.00 / (Inlet time + 20.00) ^ 0.93 (in/hr); Initial tailwater elevation = 7.23 (ft)
Hydraflow Storm Sewer Tabulation
Page 1
Station
Len
! Drng Area
Rnoff
Area x C
Tc
Rain
Total
Cap
Vel
Pipe
Invert Elev
HGL Elev
Gmd / Rim Elev
Line ID
coeff
(1)
flow
full
Line
To
1 Incr
Total
Incr
Total
Inlet
Syst
Size
Slope
Up
Dn
Up
Dn
Up
Dn
Line
(ft)
(ac)
(ac)
(C)
(min)
(min)
(in/hr)
(cfs)
(cfs)
(ft/s)
(in)
(%)
(ft)
(ft)
(ft)
(ft)
(ft)
(ft)
4
3
86.0
0.19
0.19
0.80
0.15
0.15
10.0
10.0
6.1
0.93
2.10
1.19
12
0.35
4.50
4.20
7.76
7.70
8.00
8.30
3
2
48.0
0.13
0.32
0.80
0.10
0.26
10.0
11.2
5.9
1.51
2.30
1.93
12
0.42
4.20
4.00
7.66
7.57
8.30
8.30
2
1
80.0
0.21
0.53
0.60
0.13
0.38
10.0
11.6
5.8
2.23
13.23
1.82
15
0.25
4.00
3.80
7.50
7.40
8.30
8.00
1
End
28.0
0.17
0.70
0.60
0.10
0.48
10.0
12.4
5.7
2.77 13.86
2.25
15
0.36
3.60
3.50
7.28
7.23
8.00
8.00
Project File: ABUF.stm
IDF File: JacksonvilleZone4.IDF
Total number of lines: 4
Run Date: 07-07-2014
NOTES: Intensity = 145.00 / (Inlet time + 20.00) ^ 0.93; Return period = 5 Yrs. ; Initial tailwater elevation = 7.23 (ft)
__I
Hydraflow Summary Report
Page 1
Line
Line ID
Flow
Line
Line
Invert
Invert
Line
HGL
HGL
Minor
Dns
No.
rate
size
length
EL Dn
EL Up
slope
down
up
loss
line
(cfs)
(in)
(ft)
(ft)
(ft)
(%1
(ft)
(ft)
(ft)
No.
4
0.93
12 c
86.0
4.20
4.50
0.349
7.70*
7.76*
0.02
3
3
1.51
12 c
48.0
4.00
4.20
0.417
7.57*
7.66*
0.04
2
2
2.23
15 c
80.0
3.80
4.00
0.250
7.40*
7.50*
0.08
1
1
I
I
2.77
15 c
28.0
3.50
I
3.60
0.357
7.23*
7.28*
0.12
End
Project File: ABUF.stm
IDF File: JacksonvilleZone4.1
F Total No. Lines: 4
Run Date: 07-07-2014
NOTES: c = circular; e = elliptical; b = box; Return period = 5 Yrs.; * Indicates surcharge condition.
Name
Q 17r<s.` Bndryl
(, Qo' e- BndryA
Pond
Bndryl
BndryA
Pond
Bndryl
BndryA
Pond
Max Warning Max Delta Max Surf
Simulation
Stage
ft
Stage
ft
Stage
ft
Area
ft2
25yr
6.150
7.000
0.1000
0
25yr
6.150
7.000
0.1000
0
25yr
7.743
8.000
0.0050
7430
3yr
6.150
7.000
0.1000
0
3yr
6.150
7.000
0.1000
0
3yr
7.231
8.000
0.0050
6873
MA
6.149
7.000
0.1000
0
MA
6.149
7.000
0.1000
0
MA
6.930
8.000
0.0050
6545
PRE PSS; - ter C%
Max
Max
Inflow
Outflow
cfs
cfS
2.940 "'
0.000
3.248
0.000
7.603
2.940
1.644 -
0.000
2.048
0.000
5.105
1.644
0.984-
0.000
1.430
0.000
3.798
0.984
Interconnected Channel and Pond Routing Model (ICPR) ®2002 Streamline Technologies, Inc. Page 1 of 1
Name: OCS From Node: Pond Length(ft): 20.00
Group: BASE To Node: Bndryl Count: 1
UPSTREAM DOWNSTREAM
Geometry: Circular Circular
Span(in): 12.00 12.00
Rise(in): 12.00 12.00
Invert(ft): 5.000 4.900
Manning's N: 0.013000 0.013000
Top Clip(in): 0.000 0.000
Bot Clip(in): 0.000 0.000
Upstream FHWA Inlet Edge Description:
Circular Concrete: Square edge w/ headwall
Downstream FHWA Inlet Edge Description:
Circular CMP: Mitered to slope
*** Weir 1 of 2 for Drop Structure OCS ***
Friction Equation: Average Conveyance
Solution Algorithm: Automatic
Flow: Both
Entrance Loss Coef: 0.500
Exit Loss Coef: 0.000
Outlet Ctri Spec: Use do or tw
Inlet Ctrl Spec: Use do
TABLE
Count: 1
Type: Vertical: Mavis
Flow: Both
�t Geometry: Rectangular
Co �sE t 2
- ----� Span(in) : 6.00
Rise(in): 20.40
" * Weir 2 of 2 for Drop Structure OCS ***
Bottom Clip(in): 0.000
Top Clip(in): 0.000
Weir Disc Coef: 3.200
Orifice Disc Coef: 0.600
Invert(ft): 6.300
Control Elev(ft): 6.300
TABLE
Count: 1 Bottom Clip(in): 0.000
Type: Horizontal Top Clip(in): 0.000
Flow: Both Weir Disc Coef: 3.200
Geometry: Circular Orifice Disc Coef: 0.600
Span(in): 2.76 Invert(ft): 5.000
Rise(in): 2.76 \ Control Elev(ft): 4.800
IL
Interconnected Channel and Pond Routing Model (1CPR) 02002 Streamline Technologies. Inc. Page I of I
Name: Post
Group: BASE
Unit Hydrograph: Uh484
Rainfall File: Flmod
Rainfall Amount(in): 9.300
Area(ac): 1.110
Curve Number: 89.00
DCIA(%): 0.00
Node: Pond Status: Onsite
Type: SCS Unit Hydrograph CN
Peaking Factor: 484.0
Storm Duration(hrs): 24.00
Time of Conc(min): 5.00
Time Shift(hrs): 0.00
Max Allowable Q(cfs): 999999.000
----------------------------------------------------------------------------------------------------
Name: Pre A Node: BndryA Status: Onsite
Group: BASE Type: SCS Unit Hydrograph CN
Unit Hydrograph: Uh323
Rainfall File: Flmod
Rainfall Amount(in): 9.300
Area(ac): 0.620
Curve Number: 82.00
DCIA(o): 0.00
Peaking Factor: 323.0
Storm Duration(hrs): 24.00
Time of Conc(min): 11.30
Time Shift(hrs): 0.00
Max Allowable Q(cfs): 999999.000
Interconnected Channel and Pond Routine Model ([CPR) (02002 Streamline Technologies, Inc. Page I of I
Name:
Post
Pre A
Post
Pre A
Post
Group:
BASE
BASE
BASE
BASE
BASE
Simulation:
25yr
25yr
3yr
3yr
MA
Node:
Pond
BndryA
Pond
BndryA
Pond
Type:
SCS
SCS
SCS
SCS
SCS
Unit Hydrograph:
Uh484
Uh323
Uh484
Uh323
Uh484
Peaking Factor:
484.0
323.0
484.0
323.0
484.0
Spec Time Inc(min):
0.67
1.51
0.67
1.51
0.67
Comp Time Inc(min):
0.67
1.51
0.67
1.51
0.67
Rain File:
Flmod
Flmod
Flmod
Flmod
Flmod
Rain Amount(in):
9.400
9.400
6.500
6.500
5.000
Duration(hrs):
24.00
24.00
24.00
24.00
24.00
Status:
Onsite
Onsite
Onsite
Onsite
Onsite
TC(min):
5.00
11.30
5.00
11.30
5.00
Time Shift(hrs):
0.00
0.00
0.00
0.00
0.00
Area(ac):
1.110
0.620
1.110
0.620
1.110
Vol of Unit Hyd(in):
1.001
1.001
1.001
1.001
1.001
Curve Num:
89.000
82.000
89.000
82.000
89.000
DCIA(%):
0.000
0.000
0.000
0.000
0.000
Time Max(hrs):
12.00
12.05
12.00
12.05
12.00
Flow Max(cfs):
7.553
3.250
5.046
2.050
3.733
Runoff Volume(in):
8.053
7.199
5.214
4.450
3.767
Runoff Volume(ft3):
32448.463
16202.355
21008.219
10015.704
15177.926
Name:
Pre A
Group:
BASE
Simulation:
MA
Node:
BndryA
Type:
SCS
Unit Hydrograph:
Uh323
Peaking Factor:
323.0
Spec Time Inc(min):
1.51
Comp Time Inc(min):
1.51
Rain File:
Flmod
Rain Amount(in):
5.000
Duration(hrs):
24.00
Status:
Onsite
TC(min):
11.30
Time Shift(hrs):
0.00
Area(ac):
0.620
Vol of Unit Hyd(in):
1.001
Curve Num:
82.000
DCIA(%):
0.000
Time Max(hrs):
12.05
Flow Max(cfs):
1.432
Runoff Volume(in):
3.080
Runoff Volume(ft3):
6930.790
Interconnected Channel and Pond Routing Model (ICPR) (02002 Streamline Technologies, Inc. Page I of 1
Name: Bndryl Base Flow(cfs): 0.000 Init Stage(ft): 4.900
Group: BASE Warn Stage(ft): 7.000
Type: Time/Stage
Tailwater elevation is based on the receiving swale flowing 15" deep.
Time(hrs) Stage(ft)
--------------- ---------------
0.00 5.000
14.00 6.150
18.00 5.000
24.00 5.000
Name: BndryA Base Flow(cfs): 0.000 Init Stage(ft): 4.900
Group: BASE Warn Stage(ft): 7.000
Type: Time/Stage
Tailwater elevation is based on the receiving swale flowing 15" deep.
Time(hrs) Stage(ft)
--------------- ---------------
0.00 5.000
14.00 6.150
18.00 5.000
24.00 5.000
Name: Pond Base Flow(cfs): 0.000 Init Stage(ft): 5.000
Group: BASE Warn Stage(ft): 8.000
Type: Stage/Area
Stage(ft)
--------------- ---------------
Area(ac)
5.000
0.1020
8.000
0.1770
------- -------------------
Interconnected Channel and Pond Routing Model UCPR) Co2002 Streamline Technologies, Inc. Page I of I
Name: 25yr
Filename: C:\Program Files\icpr3\ABUF\25yr.R32
Override Defaults: Yes
Storm Duration(hrs): 24.00
Rainfall File: Flmod
Rainfall Amount(in): 9.40
Time(hrs)
---------------
Print Inc(min)
---------------
9.000
5.00
16.000
1.00
24.000
5.00
----------------------------------------------------------------------------------------------------
Name: 3yr
Filename: C:\Program Files\icpr3\ABUF\3yr.R32
Override Defaults: Yes
Storm Duration(hrs): 24.00
Rainfall File: Flmod
Rainfall Amount(in): 6.50
Time(hrs)
---------------
Print Inc(min)
---------------
9.000
5.00
16.000
1.00
24.000
5.00
----------------------------------------------------------------------------------------------------
Name: MA
Filename: C:\Program Files\icpr3\ABUF\MA.R32
Override Defaults: Yes
Storm Duration(hrs): 24.00
Rainfall File: Flmod
Rainfall Amount(in): 5.00
Time(hrs)
---------------
Print Inc(min)
---------------
9.000
5.00
16.000
1.00
24.000
5.00
Interconnected Channel and Pond Routing Model (ICPR) 0)2002 Streamline Technologies, Inc. Page I of
Name: 25yr Hydrology Sim: 25yr
Filename: C:\Program Files\icpr3\ABUF\25yr.I32
Execute: Yes Restart: No Patch: No
Alternative: No
Max Delta Z(ft): 1.00 Delta Z Factor: 0.00500
Time Step Optimizer: 0.000
Start Time(hrs): 0.000 End Time(hrs): 30.00
Min Calc Time(sec): 5.0000 Max Calc Time(sec): 60.0000
Boundary Stages: Boundary Flows:
Time(hrs) Print Inc(min)
--------------- ---------------
30.000 15.000
Group Run
--------------- -----
BASE Yes
--------------------------------------------------------------------------------------------
Name: 3yr Hydrology Sim: 3yr
Filename: C:\Program Files\icpr3\ABUF\3yr.I32
Execute: Yes Restart: No Patch: No
Alternative: No
Max Delta Z(ft): 1.00 Delta Z Factor: 0.00500
Time Step Optimizer: 0.000
Start Time(hrs): 0.000 End Time(hrs): 30.00
Min Calc Time(sec): 5.0000 Max Calc Time(sec): 60.0000
Boundary Stages: Boundary Flows:
Time(hrs) Print Inc(min)
--------------- ---------------
30.000 15.000
Group Run
--------------- -----
BASE Yes
----------------------------------------------------------------------------------------------------
Name: MA Hydrology Sim: MA
Filename: C:\Program Files\icpr3\ABUF\MA.132
Execute: Yes Restart: No Patch: No
Alternative: No
Max Delta Z(ft): 1.00 Delta Z Factor: 0.00500
Time Step Optimizer: 0.000
Start Time(hrs): 0.000 End Time(hrs): 30.00
Min Calc Time(sec): 5.0000 Max Calc Time(sec): 60.0000
Boundary Stages: Boundary Flows:
Time(hrs) Print Inc(min)
Interconnected Channel and Pond Routing Model (ICPR) <)2002 Streamline'Fechnologies, Ine. Page I of
--------------- ---------------
30.000 15.000
Group Run
--------------- -----
BASE Yes
Interconnected Channel and Pond Routing Model (IC PR) 02002 Streamline Technologies, Inc. Page 2 of 2
Table 1.—Runoff Curve Numbers for Hydrologic Soil Cover Complexes (AMC II,
I = 0.2S) (SCS, 1983)
f
10 88.6
AY�r lnmeLQi6Z/
Curve Numbers for
Land Use Description
C_5411–gL=
Commercial and business area:;
85
89
A
B
C
D
72
;(Vegetation Established)
88
91
93
Row houses, town houses, and
Lawns, open spacesr parks, gcf courses, cemeteries, etc.
good condition: grass cover
on 758 or more of the area
39
61
74
80
fair condition: grass cover
on 508 to 75% of the area
49
69
79
84
poor condition: grass cover
on 50% or less of the area
68
79
86
89
Paved parking lots, roofs, driveways, etc.
98
98
98
98
Streets and roads: paved with
curbs and storm sewers
98
98
98
98
gravel
1/3 acre
76
85
89
91
dirt
1/2 acre
72
82
87
89
paved with
open ditches
83
89
92
93
f
10 88.6
AY�r lnmeLQi6Z/
Commercial and business area:;
85
89
92
94
95
Industrial districts
72
81
88
91
93
Row houses, town houses, and
residential with lot sizes
1/8 acre or less
65
77
85
90
92
Residential
�� y {
11 3
83
59
Average lot size
1/44 acre
38
61
75
83
1/3 acre
30
57
72
81
86 P(- 06�- C\
1/2 acre
25
54
70
80
85
1 acre
20
51
68
79
8
2 acre
12
46
65
77
c' 82':-a
DEVE�APING t1R8AN (No Vegetation Established)
Newly graded area or bare sc,.-J
77
86
91
94
f
10 88.6
r
z
W
V
C
W
a
z_
W
a
0
J
N
I.0
0.5
VELOCITY IN FEET PER SECOND
L21 1. '2 n1 i n
5, QMrr7
Figure 7. --Average Velocities for Estimating Travel Time for
Overland Flow (SCS, 1972).
_MBER 32
AG
4.71SIR
ATLANTIC
' 2d 4.. ` BEACH
a �8'
132 17 16
Ise
.� 2 1 35
- '
e 7.
t} 71 3
7
a fig
�T A
f, 32 h
tel.32
12
4 J14
t'.
rg 1
71 9 ',
21'
38 to
r� Lane
toe
i. 75� ;� `"y c
�.
iy4 a 71, `BEACH, 4..._y,.,
Xt
` 69 1 n?e
14
5 32 C
68 28.
75
71 a
r 10
It
1 .
JACK54Mt111-E BEACH
`...y
2 MILES
2 KILOMETERS
1
1
1
I
-
I
R
r
R
-----------------
J
J
,7
rn
Ch
a
a,
a
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to
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u
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a
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— —
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m
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m
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r
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-----------------
a
a
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n
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o rn r r
CI paR
0
ABAmS jiog 86l
O
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10
A
ABAmS jiog 86l
L E G A C Y
ENGINEERING, INC
Geotechnical & Materials Engineering and Testing
8 to 9 feet underlain by very loose silty fine sand (SM) extending to depths
varying between 11 and 13 feet. As an exception, the layer of silty fine sand at
the location of Boring B4 extended to the boring termination depth of 15 feet.
Very loose to very firm fine sand (SP) and fine sand with silt (SP -SM) were
typically encountered below the silty fine sand layer and extended to the boring
tennination depths of 15 to 25 feet. As an exception to the above, the layer of
silty fine sand was not encountered at the location of Boring P2. A layer of roots
(PT) was encountered between the approximate depths of 18 and 21 feet at the
location of Boring Pl. Boring B4 encountered concrete debris between the
approximate depths of 1 and 2 feet at the location of Boring A2.
The auger borings (A1 through A6) generally encountered fine sand (SP) and fine
sand with silt (SP -SM) throughout the 6 -foot exploration depths. As an
exception, a layer of charred debris was encountered between the approximate
depths of 2 and 3 feet at the location of Boring A2.
Approximately 3 to 12 inches of topsoil and surficial rubble was present at all
boring locations. The thickness of the topsoil will vary throughout the site.
t!�.2 .;`Groundwater Level
The groundwater level was measured at the boring locations, subsequent to boring
`- completion, at depths varying between 3.0 and 4.0 feet below existing grade. The
depth of the groundwater level encountered at each boring location is presented
on the Generalized Soil Profiles and the Test Boring Records.
The groundwater table will fluctuate depending on seasonal variations, adjacent
construction, surface water runoff, etc. Based on the results of the soil borings,
and review of available published literature, we estimate the seasonal high
groundwater level at approximately 18 inches above the levels measured durinQ
this exploration. Should rainfall intensity xceed normal quantities, or should
other variables that affect the groundwater level be altered, the groundwater
profile at the site could change significantly.
5.0 BUILDING AREA RECOMMENDATIONS
5.1 General
The following recommendations are made based upon a review of the attached
soil test data, our understanding of the proposed construction, and experience with
similar projects and subsurface conditions. If the structural loads, construction
3
Consulting Engineering Services
The Ellis Family Has Been Serving the Engineering and Construction Industries Since 1939
Pi
I
2
2
62
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EBTopsoil
r---1
Fine SAND (SP)
'tij', I
Fine SAND with Sill (SP -SM)
014
Silly Fine SAND (SM)
B5
B6
Al
A2
14 =3
tzit.N
N
N -8
Charred Debris (PT), Concrete
Debris
4 Ground Water Depth
Legacy Engineering, Inc.
GENERALIZED SOIL PROFILE
5
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0
(D
3
15
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30
I VdQEf ' VVN 0T/AVl-KUVrU by DATE DRAWN
,C JEEII/JEEII 7/3/2014
Atlantic Beach Urban Farms
PROJECT NO. 14-1124 FIGURE NUMBER
30 -
at3killumbols
EBTopsoil
r---1
Fine SAND (SP)
'tij', I
Fine SAND with Sill (SP -SM)
014
Silly Fine SAND (SM)
B5
B6
Al
A2
14 =3
tzit.N
N
N -8
-15
N-2xf
Xf f
.4a =2
N -6
N 4
N=5
N -4
IT 11.
-3
t::
-LZ
MIJ
SZ
S7-
-------
.... .
t:
Mk-
4 3
Nrt
t
-5i i
,rti
R
N=6
N -9
N =5
N-5
46-f
N-11
N-6
3:ert
it
ii'i
'iii
X(t
if
t L.
�iAt}
iii
N=1
N =2
N -2
N =4
-M?
..s. . ti
N =3
N-2
;M
V:
ti
i`
ciyit
T
MM
dYtl
t Ir
I
r A
r.*tr
sir
..'.ti,
N -4
'1q, errii
616.,
N =2
'1"
-e it.
N=5
N =8
i'�
iiitf
t t
14 if
ty.tl:
1:�. L r
i!K R.
IYtf
tv H.
Xt r
.4if
N-8
-tv
Charred Debris (PT), Concrete
Debris
4 Ground Water Depth
Legacy Engineering, Inc.
GENERALIZED SOIL PROFILE
5
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(D
3
15
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30
I VdQEf ' VVN 0T/AVl-KUVrU by DATE DRAWN
,C JEEII/JEEII 7/3/2014
Atlantic Beach Urban Farms
PROJECT NO. 14-1124 FIGURE NUMBER
30 -
at3killumbols
EBTopsoil
r---1
Fine SAND (SP)
'tij', I
Fine SAND with Sill (SP -SM)
Silly Fine SAND (SM)
Charred Debris (PT), Concrete
Debris
4 Ground Water Depth
Legacy Engineering, Inc.
GENERALIZED SOIL PROFILE
5
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(D
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15
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D6
30
I VdQEf ' VVN 0T/AVl-KUVrU by DATE DRAWN
,C JEEII/JEEII 7/3/2014
Atlantic Beach Urban Farms
PROJECT NO. 14-1124 FIGURE NUMBER