variance request and report to the stormwater drainage manual

VARIANCE REQUEST AND REPORT TO THE STORMWATER

DRAINAGE MANUAL

6/15/2020 1431 Community Park Drive, Columbus, Ohio

(CC-18536)

Prepared by:

Bird+Bull, Inc. Consulting Engineers & Surveyors 3500 Snouffer Road, Ste. 225 Columbus, Ohio 43235 (614) 761-1661

Written by: Joshua Miller, E.I. & Bill Westbrook Reviewed by: Andrew Gardner, P.E. (E-68659) [email protected]

agardner

Stamp

VARIANCE REQUEST AND REPORT TO THE STORMWATER DRAINAGE MANUAL

1431 COMMUNITY PARK DRIVE, COLUMBUS, OHIO (CC-18536)

JUNE 29, 2020

Page 1

Table of Contents

PURPOSE ......................................................................................................................... 2

SECTION 1 – VARIANCE REQUEST ..................................................................................... 4

EXISTING CONDITIONS ............................................................................................................ 4

Proposed Conditions ............................................................................................................... 4

SECTION 2 – PROPOSED ALTERNATIVES ........................................................................... 5

Alternative 1 – Full Compliance Site Plan ............................................................................... 5

Alternative 2 – Minimal Impact Site Plan ............................................................................... 5

Alternative 3 – Preferred Site Plan ......................................................................................... 6

APPENDIX 1 – FULL COMPLIANCE ALTERNATIVE SITE PLAN

APPENDIX 2 – MINIMAL IMPACT ALTERNATIVE SITE PLAN

APPENDIX 3 – PREFERRED ALTERNATIVE SITE PLAN



JUNE 29, 2020

Page 2

Variance Request and Report to the Stormwater Drainage Manual 1 4 3 1 C O M M U N I T Y P A R K D R I V E , C O L U M B U S , O H I O ( C C - 1 8 5 3 6 )

PURPOSE The purpose of this report is to request a Type II Non-Stream Protection Variance from the City of Columbus’

Stormwater Drainage Manual for the existing site located at 1431 Community Park Drive in Columbus, Ohio.

The existing site, located on the south side of Community Park Drive approximately 500’ west of Cleveland

Avenue, has been flagged recently by City staff as being non-compliant and requiring an updated Site

Compliance Plan on file with the City. Due to unpermitted gravel paving occurring on this site exceeding 2,000

s.f. of additional impervious surface, an updated CC-Storm plan has also been required.

Based on the constraints of the site, we are requesting the following variances:

Variance to Section 3.2.3.1 of the City of Columbus Stormwater Drainage Manual to allow side slopes

within and adjacent to the basin to be 2 (H) to 1 (V) or flatter.

Variance to Section 3.2.3.2 of the City of Columbus Stormwater Drainage Manual to allow for a dry

detention basin with bottom width less than 12 feet.

Variance to Section 3.2.3.2 of the City of Columbus Stormwater Drainage Manual to allow for a dry

detention basin with minimum transverse slope for the bottoms of such facilities to be 1.0 percent.

The site cannot meet the above requirements due to the following constraints:

1. The existing parcel is only 50’ wide despite being approximately 415’ in length. Due to the awkward

length to width ratio, it is difficult to provide detention for the entire 415’ length of the site without the

basin occupying the prime usable space onsite or without installing significant storm sewer

infrastructure. In order to provide a minimum slope of 1.0% along the length of the basin, the basin

must be at least 3’ deep. With a 4:1 slope on the basin, 3’ depth, and 12’ basin bottom width, the basin

would be require a minimum 36’ width, exceeding 2/3rds of the entire parcel’s usable width.

2. Underground detention was evaluated for this site to meet city storm water requirements, however we

are unable to provide the required minimum cover on an underground system and still connect into the

existing catch basin in Community Park Drive. The invert of the existing catch basin is 867.61.

3. The lot is currently operated as a storage yard for the materials and equipment associated with the

adjacent Blue Ring Residential Services landscaping company, which owns both properties. The lot is

primarily used for the storage of landscape materials such as stone, mulch and topsoil. Some vehicles

are parked there during non working hours. This existing use results in a relatively high amount of traffic

throughout the existing parcel. As such, any proposed storm inlets to be installed in the parking area



JUNE 29, 2020

Page 3

would undergo regular vehicle traffic resulting in potential damage to the storm infrastructure. The

nature of the materials stored on site will also result in ongoing maintenance issues for a proposed

storm sewer.

4. The current use of the existing parcel requires access to as much of the parcel as possible, if not the

entire parcel, for the operations of the adjacent landscaping company. Both the existing lot and

adjacent Blue Ring Residential Services lot are currently landlocked with no apparent opportunity to

expand and provide additional storage yard area. As such, as much usable space on the parcel must be

retained as possible for the operation of the existing business.

Per the City of Columbus guidelines for a Type II Non-Stream Protection Variance, three alternatives for

development are required to be presented. They are as follows:

• Alternative 1 – Full Compliance

A site plan has been provided showing a triangular basin design that would be meet the 4:1

slopes, with full emergency spillway and approximately 1 foot of freeboard from the estimated

100-year elevation to the basin embankment. This option heavily limits the usable space onsite

while also causing concerns that the shape and size of the basin are not feasible for the owners

operation.

• Alternative 2 – Minimal Impact

An alternative site plan has been provided showing a square basin design that would also meet

the 4:1 slopes, with full emergency spillway. This alternative provides the required storage and

retains a significant usable portion of the lot, but would require extensive storm sewer

infrastructure which becomes a maintenance concern for the owners operation. The operations

involves the storage of landscape material such as mulch and stone on site. It is our concern

that these materials will get tracked back and forth and create clogging issues for catch basins

and storm sewer pipes.

• Alternative 3 – Preferred

The preferred site plan has been shown with a lengthy rectangular basin with 2:1 slopes. The

preferred basin would provide enough volume to handle the 100-year storm event and would

utilize the existing slopes to force overflow to Community Park Drive. This alternative will

provide the most usable space to the owner possible, while also requiring the least amount of

on-going maintenance and cost for the owner.



JUNE 29, 2020

Page 4

SECTION 1 – VARIANCE REQUEST

EXISTING CONDITIONS

The existing site is an approximately 0.48-acre parcel located on the south side of Community Park Drive. The

site is currently used as a storage yard for the neighboring Blue Ring Residential Services landscaping company.

Both parcels are owned by Blue Ring. However, the main parcel for Blue Ring is located in Sharon Township

while the property under question was annexed into the City of Columbus. There are no buildings located on

the existing Columbus parcel, although there are a handful of storage trailers that are to be relocated as

necessary. The site is currently zoned R-residential in the City of Columbus. The site is bound to the north by

Community Park Drive, the east by the existing Blue Ring Residential Services commercial office (Sharon

Township), a single-family home to the south (Sharon Township), and the existing Church of God of Prophecy to

the west.

Although there has been no change of use or improvements proposed, the site has recently been declared non-

compliant and was forced to submit an updated Site Compliance Plan within the City of Columbus. During this

site compliance review, it was noted that non-permitted gravel pavement has been added onsite and that a CC-

Storm plan must be submitted for this additional impervious surface.

The yard is used for the storage of landscape materials. Some vehicles are parked on site during non working

hours. In recent years, additional gravel pavement has been added to meet the growing needs of Blue Ring for

their material storage.

Proposed Conditions

At this time, there are no site improvements proposed aside from the requirements set forth in both the Site

Compliance Plan review and the CC-Storm plan review set forth by the City of Columbus. Due to infrastructure

and cost constraints, a dry detention basin has been proposed to provide adequate detention to the site per the

City of Columbus Stormwater Drainage Manual.



JUNE 29, 2020

Page 5

SECTION 2 – PROPOSED ALTERNATIVES Per the City of Columbus guidelines for a Type II Non-Stream Protection Variance, three alternatives for

development of this project are presented in this report. They are as follows:

Alternative 1 – Full Compliance Site Plan

In order to meet the full intent of the Stormwater Drainage Manual, this Full Compliance Site Plan has been

proposed as an option that would meet the required 4:1 slopes, provide approximately 1 foot of freeboard, and

exhibit a full emergency overflow spillway. This option will require the regrading of the bulk of the gravel

pavement on the lot to drain to the proposed basin. To minimize the disturbance, a triangular basin has been

proposed with bottom slopes of approximately 1%. As the basin extends southward, the width of the basin is

reduced to minimize impact while still allowing drainage.

In order to provide a running slope of 1% from the southern portion of the site to the northern outlet, a

minimum basin depth of 3 foot is required. At a 4:1 slope, this minimum depth results in side slope widths of

12’ to either slope. With the required 12’ minimum width, a 36’ wide basin would be required at the widest

portion near the front of the lot. As the existing lot is only 50’ wide, this takes up more than 2/3rds the frontage

of the lot. Additionally, even with the basin thinning as possible, there will be a loss of 40-50% of the usable

storage area on this lot. This basin also results in a significant amount of storage volume not required by code

and thus an additional amount of dirt to export from the site. Due to the extreme loss of usable space, we do

not feel the full compliance option is feasible for the owner to continue to operate onsite.

Alternative 2 – Minimal Impact Site Plan

As a minimal impact option, we have proposed a more square basin to be located at the northern end of the

property near Community Park Drive. With this alternative, the 4:1 slopes can be met with a minimum 12’

bottom basin width, as well as meeting volume requirements. However, with all detention volume located at

the northern end of the parcel, significant storm sewer infrastructure will be required to drain the southern bulk

of the site. As such, we have shown a run of yard drains and minimum 8” storm sewer to drain the site to the

basin. Additionally, the proposed alternative can be used to provide a full emergency spillway and 6-8” of

freeboard above the 100-year elevation.

While the square basin provides adequate detention and slopes in a minimized square footage, the required

storm sewer improvements cause additional issues onsite. The limited 3’ depth of this alternative results in

minimal pipe cover for any storm sewers upstream of the basin. Additionally, the infrastructure would require

multiple yard drain inlets to be located in a gravel pavement area with a significant amount of equipment traffic.

This will further limit the owners ability to store stockpiles of landscape materials around the site. Despite

providing approximately 80% usable space on the parcel, the combined risks of the shallow storm sewer and

yard inlets in a gravel pavement area represent serious flaws to this proposed alternative.



JUNE 29, 2020

Page 6

The pipe cover argument is not acceptable. There are many projects in the City with cover this shallow

over the pipe. Typically, this issue could be solved by using traffic grade concrete sewer structures and

pipe.

Response: Please see the revised plan.

The pipe cover argument is not acceptable. There are many projects in the City with cover this shallow over the pipe. Typically, this issue could be solved by using traffic grade concrete sewer structures and pipe. Response: Please see the revised plan. It appears the modified Minimal Impact alternative is feasible and would not require variance. Must clarify the hardships this alternative would place on the owner. Response: This alternative would costs the owner considerably more than the Preferred Site Plan and would take up significantly more usable area of the property.

Alternative 3 – Preferred Site Plan

The current preferred alternative would be the construction of a lengthy, rectangular basin to run nearly the

entire length of the parcel. With 2:1 slopes, the basin could maintain a consistent width the entire length

without heavily sacrificing volume or usable surface area. By minimizing the surface area and maximizing slopes

(with a bottom 1% transverse slope), the usable surface area in the parcel is maximized with minimal impact.

Additionally, the length of the proposed basin allows for proper drainage with minimal storm sewer

infrastructure required. The proposed basin will allow for adequate detention to meet the intent and purposes

of the Columbus Stormwater Drainage Manual.

Although the preferred alternative basin would meet detention requirements and provide drainage without the

necessity of additional storm sewer, the lengthy basin could cause potential hazards for maintenance as vehicles

and equipment approach the basin. The side slopes and bottom of the swale will be vegetated with Turf Type

Tall Fescue. One of the owners of The Seed Center told me that this mix will produce a hardy stand with the

capability to survive periodic inundation with water and will draw up small standing water occurrences. It will

need to be cut 4 times per year. Straw blankets covering the seed mix shall be used to stabilize the side slopes

until the vegetation has been established. The side slopes can be protected from vehicles with using concrete

parking blocks spaced 3’ apart.

To minimize the maintenance impacts of this configuration, the maintenance schedule for the basin will be

increased. Sediment will be cleaned and removed from the basin twice a year. The outlet structure will be

inspected on a monthly basis and any sediment and debris removed to ensure proper operation.



JUNE 29, 2020

Page 7

The preferred alternative remains the most cost efficient option with minimal infrastructure requirements and

maximizing usable storage. On a unique site with existing width and length constraints, the 2:1 basin option

remains the most efficient way to properly provide both drainage and detention.

A flatter than required basin floor would at the very least require an underdrain system to prevent ponding and resulting health/sanitary issues.

Previous reply: What we are proposing essentially is a vegetated swale and because of that an underdrain is not warranted on such a small area.

Required: This response is not sufficient. How will ponding be prevented?

Response: See revised seeding mix and explanation above. If the performance as proposed is unacceptable, we will install a 4” perforated underdrain in the bottom of the basin and reseed with straw blankets.

Proposed hand cleaning of the preferred alternative basin would not work when ownership of the land is transferred. We always must consider the sustainability of system maintenance for all future owners that will be responsible for the system in the future.

Previous reply: We will record a document encumbering the present and future owners of the property of their responsibility to maintain the drainage system as per the approved CC plan.

Required: Our concern is future owners will not have the staff for the hand labor necessary to maintain the proposed basin. Please explain how you are proposing to address.

Response: Any potential future purchaser should review the documents of record and will see the commitment and the reference to the CC plans. With ownership that purchaser will be responsible to stay in compliance with the required maintenance or be subject to the penalties associated with non-compliance regardless whether or not it is inconvenient. We are unaware of a requirement that an encumbrance on Title of a property for storm water improvements and the maintenance of those improvements but on this property we have agreed to provide that notice to any purchaser. Ultimately, if a purchaser makes the decision that the maintenance of the storm water improvements is too large of a burden then that purchaser has the option to submit for approval an alternative storm water plan and then construct the new improvements which may have less maintenance than what is proposed. We would be very surprised if that occurred as with only a minimal amount of training any competent lawn maintenance contractor should be able to comply with the maintenance.

The proposed vegetation for the steeper than 4:1 side slopes will likely not be functional within 10 years.

Previous reply: I am not sure why you believe that but if that occurs new vegetation can be planted.



JUNE 29, 2020

Page 8

Required: Our concern is the erosion that can occur and the high maintenance that will be required to maintain. Please explain how you are proposing to address.

Response: The proposed seeding, as depicted above, is a very durable deep rooted grass which should preclude any significant erosion. If it should fail it can be reseeded and covered with straw blankets to protect the slopes until such time that it is re-established.

The detention basin layout proposed under the Preferred Alternative will be challenging for workers to enter to maintain due to likely muddy bottom conditions.

Previous reply: The present staff and/or contractors work in muddy conditions often so that is not a problem.

Required: This is still a concern for future owners. Please explain how you are proposing to address.

Response: Please see the explanation above that deals with the alternative available to future owners.

To maintain the basin the landscaper at the site will maintain plantings that can take the 2:1 slope and periodic submerging. Not addressed in the re-submittal

Previous reply: We identified the specific planting in the Variance Request

Required: Red fescue is not tolerant of water submergence. How will invasive creeping of Vinca minor and ajuga be controlled?

Response: We engaged with a knowledgeable expert to assist us in the selection of a grass that will survive periodic short term submergence that is deep rooted and commonly used for ditch seeding.

The applicant will look at possibility of providing detention on adjacent site. Item 4 on page 3 of the revised submittal states all of the area of the subject site and the adjacent site to the east with the same owner are needed for the company operations. He states there is no opportunities to expand operations.

Previous reply: As we discussed in our meeting, my client in unwilling to have detention on his site in the Township. Further, I am concerned that the City would be unable to access a detention basin in the Township.

Required: Must explain why locating detention in adjacent site in the Township is a hardship for the owner. There have been several instances where detention was provided outside City limits. The City has had no problems accessing these sites for annual inspections.



JUNE 29, 2020

Page 9

Response: It has been determined that a significant additional amount of infrastructure would be required to implement on the adjacent property. In addition and most importantly that property is the most active area on site to operate the business with vehicles and equipment. Further, the property in question was purchased to provide for parking and storage of materials that access is less frequent.

Appendix 1 F U L L C O M P L I A N C E A L T E R N A T I V E S I T E P L A N

76

75

74

NORTH HOME ACRE PARKP.B. 18, PG. 20

CO

MM

UN

ITY

PAR

K D

RIV

E - V

ARIA

BLE

WID

TH

SHARON TOWNSHIPCITY OF COLUMBUS

CITY OF COLUMBUSSHARON TOWNSHIP

170717273

D

B

C

T.C. = 872.00

E

PROP. DRYDETENTION BASIN

B

B

4:1

4:1

G

PROP.ASPHALT

PAVEMENT H

A

A

DD

865

870

875

880

865

870

875

880

0+00 0+50

ELEV. = 873.00

BOTTOM ELEV.VARIES

4:1 4:1

100 YEAR FLOODELEVATION = 872.25

PAGE

COUNTY RECORDER

EASEMENT REFERENCE

VOL.CITY NO. GRANTOR

NO. APPROVAL/DATEDESCRIPTION

REVISIONS

CONTRACT DRAWING NO.

SCALE: AS NOTEDAGREEMENT

RPD CKD CON. DR.CLD

COMPLETEDSHEET:

RECORD PLAN NO.

PROJECT TITLE:

DIVISION USE ONLY

INSPECTOR

CONTRACTOR

OWNER

DIVISION USE ONLY

CITY OF COLUMBUSDEPARTMENT OF PUBLIC UTILITIES

DIVISION OF SEWERAGE AND DRAINAGE

PROPOSED STORM SEWER IMPROVEMENTSFOR

1431 COMMUNITY PARK DRIVECOLUMBUS, OHIO 43229

/ X

CC-18536

3500 Snouffer Road, Ste. 225Columbus, Ohio 43235

Ph: (614) 761-1661Fax: (614) 761-1328

WWW.BIRDBULL.COM

H:\J

obs\

2018

\176

\CAD

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ign\

Exhi

bit\2

019-

10 S

W V

aria

nce\

18-1

76 F

ull C

ompl

ianc

e3.d

wg

10/1

6/20

19

GRAPHIC SCALE

SCALE: 1" = 20'6040200

LEGENDEXISTING CONTOUR

PROPOSED CONTOUR

EXISTING SPOT ELEVATION

PROPOSED SPOT ELEVATION

EXISTING STORM MANHOLE

PROPOSED STORM MANHOLE

EXISTING CATCH BASIN

PROPOSED CATCH BASIN

EXISTING GRAVEL PAVEMENT(TO REMAIN)

EXISTING CONCRETE PAVEMENTTO BE REMOVED AND DISPOSEDOF.

EXISTING SANITARY MANHOLE

PROPOSED SANITARY MANHOLE

EXISTING FIRE HYDRANT

PROPOSED FIRE HYDRANT

EXISTING VALVE

PROPOSED VALVE

INDICATES DIRECTION OF MAJORFLOOD ROUTING (GREATER THAN100 YR EVENT)

EXISTING GRAVEL PAVEMENTAREA TO BE REMOVED ANDREPLACED WITH ASPHALTPAVEMENT PER SECTION ON THISSHEET.

68.5

868

CODED NOTES

X

A COMPACTED GRANULAR MATERIAL PER COLUMBUS ITEM 912.

CORE DRILL PROPOSED 12" PIPE INTO EXISTING CATCH BASIN, PROPOSED INVERT = 867.70.

OUTLET CONTROL STRUCTURE PER DETAIL ON THIS SHEET.

TRAILER TO BE RELOCATED PRIOR TO BASIN GRADING.

SEDIMENT MONITOR POST PER DETAIL ON THIS SHEET.

PROPOSED 2" Ø DIAMETER ORIFICE PLATE PER DETAIL ON THIS SHEET.

EXISTING CONCRETE DRIVE APPROACH TO BE REMOVED AND DISPOSED OF.

EXISTING GRAVEL PAVEMENT AREA TO BE REMOVED AND DISPOSED OF. AREA SHALL BE PAVED WITHASPHALT PER SECTION ON THIS SHEET.

EXISTING 1.5" WATER SERVICE TO BE DEFLECTED UNDER PROPOSED STORM SEWER. MAINTAIN 18" OFVERTICAL CLEARANCE (OUTSIDE OF PIPE TO OUTSIDE OF PIPE) BETWEEN UTILITIES. CONTRACTOR TO FIELDVERIFY EXACT LOCATION AND DEPTH OF UTILITY PRIOR TO CONSTRUCTION.

B

C

D

PROPOSED OUTLET CONTROL STRUCTURE

NO SCALE

STRUCTURE #1

ADS ENVIROHOOD# 5818AGF(ANTI-CLOGGING DEVICE)

TOP OF GRATE = 872.00

HEAVY SOLIDS

3' x 3' CATCH BASINPER COC STD.DWG. AA-S133B

OIL & DEBRIS

3'

ORIFICE PLATEPER DETAIL ONTHIS SHEET

(AA-S133B)

36"

12" OUTLETINV. = 868.72

LIGHT DUTYGRATE PERCOC STD.DWG. AA-S139

MIN.6"

ADS ENVIROHOOD# 5818AGF

(ANTI-CLOGGING DEVICE)

12" OUTLET PIPE

STEPS (AA-S119)


3'

3'

PLAN VIEWNO SCALE

(AA-S133B)

ORIFICE PLATE DETAILSEE COC STD. DWG. (AA-S145)

NO SCALE

2.75" Ø ORIFICE

(4)1/2" Ø BOLTS (TYP.)

1/4 " THICK ALUMINUM PLATE

12" OUTLET PIPE (BEHIND)

3" TYP.

TWO 6"x12" SIDEINLET WINDOWSINV. = 869.50

6"x12" SIDE INLETINV. = 869.50

6"x12" SIDE INLET WINDOW INV. = 869.50


NO SCALE

SEDIMENT MONITOR POSTNO SCALE

TOP OF TREATED 4"x4"WOODEN POST1" ROUTED BAND,

TYP. (1/2" DEEP)

BOTTOM OF BASIN= 870.00

TOP OF STAKE ELEV. = 873.00

MARKED ELEV. = 870.50

EMBED POST42" MIN.

(MAX. ALLOWABLE DEPTH REQUIRINGREMOVAL AND BASIN MAINTENANCE)

MONITOR POSTS SHALL BE PLACED AT DESIGNELEVATION AT THE BOTTOM OF THE BASIN NOCLOSER THAN 25' TO EACH OTHER.

SEE PLAN VIEW FORLOCATION/PLACEMENT.

E

4'

2:1 2:12'

EMERGENCY OVERFLOW SWALE/SPILLWAYSECTION B-B

SCALE: N/A

873.00 TOP OF SPILLWAY

872.50872.25 = 100 YEARFLOOD ELEVATION

F

G

H

DRY DETENTION BASINCROSS-SECTION A-A

SCALE: 1" = 20' HORIZ., 1" = 5' VERT.

SCALE: 1" = 5'

GRAPHIC SCALE

151050

HORIZ.

VERT.I

1431 COMMUNITY PARK DRIVEFULL COMPLIANCE ALTERNATIVE

AutoCAD SHX Text

Shed

AutoCAD SHX Text

Conc.

AutoCAD SHX Text

Conc.

AutoCAD SHX Text

Conc.

AutoCAD SHX Text

Comb. Curb & Gutter

AutoCAD SHX Text

Conc.

AutoCAD SHX Text

Building

AutoCAD SHX Text

Building

AutoCAD SHX Text

Building

AutoCAD SHX Text

Trailer

AutoCAD SHX Text

Trailer

AutoCAD SHX Text

Trailer

AutoCAD SHX Text

Wood Deck

AutoCAD SHX Text

Wood Deck

AutoCAD SHX Text

NOTE: 4" PMP Gasline along north side of Community Park Drive

AutoCAD SHX Text

Ex. 36" Waterline

AutoCAD SHX Text

C&G Inlet TC 872.36 Window 871.76 12" RCP E 867.26

AutoCAD SHX Text

Stm. CB TC 871.59 12" RCP NE 867.61 4" PVC S 869.99

AutoCAD SHX Text

C&G Inlet TC 872.22 Window 871.61 12" RCP W 867.11 12" RCP SW 867.31 15" RCP N 867.01

AutoCAD SHX Text

Ex. 18" Stm. (E01456)

AutoCAD SHX Text

Ex. 18" Stm. (CC08310)

AutoCAD SHX Text

Ex. 12" Stm. (E01456)

AutoCAD SHX Text

Ex. 12" Stm. (E01456)

AutoCAD SHX Text

Ex. 12" Stm. (E01456)

AutoCAD SHX Text

T0572

AutoCAD SHX Text

T0570

AutoCAD SHX Text

T0573

AutoCAD SHX Text

T0569

AutoCAD SHX Text

T0571

AutoCAD SHX Text

0641F01

AutoCAD SHX Text

CTP0373_010

AutoCAD SHX Text

CTP0373_009

AutoCAD SHX Text

Trailer

AutoCAD SHX Text

BLUE RING HOLDINGS, LLC. 0.94 AC. P.N. 252-000105 1425 COMMUNITY PARK DRIVE

AutoCAD SHX Text


AutoCAD SHX Text

CHURCH OF GOD OF PROPHECY, INC. 0.95 AC. P.N. 600-175671 COMMUNITY PARK DRIVE

AutoCAD SHX Text

HOME DEPOT U S A INC. 11.04 AC. P.N. 600-166127 6333 CLEVELAND AVE.

AutoCAD SHX Text

Approx. Location Street Light (200387)

AutoCAD SHX Text

B

AutoCAD SHX Text

Ex. Gravel Pavement (To Remain)

AutoCAD SHX Text

Approx. Location 1.5" Domestic Water

AutoCAD SHX Text


AutoCAD SHX Text

Ex. Ground

AutoCAD SHX Text

867

AutoCAD SHX Text

867.50

Appendix 2 M I N I M A L I M PA C T A L T E R N A T I V E S I T E P L A N

76

75

74


CO

MM

UN

ITY

PAR

K D

RIV

E - V

ARIA

BLE

WID

TH



170717273

2

3 54

D

B

C

T.C. = 872.00

E


B

B

4:1

4:1

G

PROP.ASPHALT

PAVEMENT H

A

A T.C. = 873.008" INV. N&S= 870.73

8" INV. S = 870.00

73' ~ 8" @ 1.00% T.C. = 873.208" INV. N =871.73

100' ~ 8" @ 0.50%

100' ~ 8" @ 0.50%

DD

8" HEADWALL PERCOC AA-S169 W/10'x6'x1.5' TYPE 'C'ROCK CHANNELPROTECTION

8" NYLOPLASTYARD DRAIN 8" NYLOPLAST

YARD DRAIN

T.C. = 873.108" INV. N&S= 871.23

8" NYLOPLASTYARD DRAIN

865

870

875

880

865

870

875

880

0+00 0+50

ELEV. = 873.00

BOTTOM ELEV.VARIES

4:1 4:1


PAGE

COUNTY RECORDER

EASEMENT REFERENCE



REVISIONS



RPD CKD CON. DR.CLD

COMPLETEDSHEET:

RECORD PLAN NO.

PROJECT TITLE:

DIVISION USE ONLY

INSPECTOR

CONTRACTOR

OWNER

DIVISION USE ONLY





/ X

CC-18536


Ph: (614) 761-1661Fax: (614) 761-1328

WWW.BIRDBULL.COM

C:\U

sers

\aga

rdne

r\app

data

\loca

l\tem

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-176

Min

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Impa

ct.d

wg

06/2

3/20

20

GRAPHIC SCALE

SCALE: 1" = 20'6040200

LEGENDEXISTING CONTOUR

PROPOSED CONTOUR













EXISTING VALVE

PROPOSED VALVE



68.5

868

CODED NOTES

X










B

C

D


NO SCALE

STRUCTURE #1



HEAVY SOLIDS


OIL & DEBRIS

3'


(AA-S133B)

36"

12" OUTLETINV. = 868.72


MIN.6"



12" OUTLET PIPE

STEPS (AA-S119)


3'

3'

PLAN VIEWNO SCALE

(AA-S133B)


NO SCALE

2.75" Ø ORIFICE


1/4 " THICK ALUMINUM PLATE

12" OUTLET PIPE (BEHIND)

3" TYP.





NO SCALE



TYP. (1/2" DEEP)




EMBED POST42" MIN.




E

4'

2:1 2:12'

EMERGENCY OVERFLOW SWALE/SPILLWAYSECTION B-B

SCALE: N/A

873.00 TOP OF SPILLWAY

872.50872.25 = 100 YEARFLOOD ELEVATION

F

G

H


SCALE: 1" = 20' HORIZ., 1" = 5' VERT.

SCALE: 1" = 5'

GRAPHIC SCALE

151050

HORIZ.

VERT.I

1431 COMMUNITY PARK DRIVEMINIMAL IMPACT ALTERNATIVE

AutoCAD SHX Text

Shed

AutoCAD SHX Text

Conc.

AutoCAD SHX Text

Conc.

AutoCAD SHX Text

Conc.

AutoCAD SHX Text

Comb. Curb & Gutter

AutoCAD SHX Text

Conc.

AutoCAD SHX Text

Building

AutoCAD SHX Text

Building

AutoCAD SHX Text

Building

AutoCAD SHX Text

Trailer

AutoCAD SHX Text

Trailer

AutoCAD SHX Text

Trailer

AutoCAD SHX Text

Wood Deck

AutoCAD SHX Text

Wood Deck

AutoCAD SHX Text


AutoCAD SHX Text

Ex. 36" Waterline

AutoCAD SHX Text


AutoCAD SHX Text


AutoCAD SHX Text


AutoCAD SHX Text

Ex. 18" Stm. (E01456)

AutoCAD SHX Text

Ex. 18" Stm. (CC08310)

AutoCAD SHX Text

Ex. 12" Stm. (E01456)

AutoCAD SHX Text

Ex. 12" Stm. (E01456)

AutoCAD SHX Text

Ex. 12" Stm. (E01456)

AutoCAD SHX Text

T0572

AutoCAD SHX Text

T0570

AutoCAD SHX Text

T0573

AutoCAD SHX Text

T0569

AutoCAD SHX Text

T0571

AutoCAD SHX Text

0641F01

AutoCAD SHX Text

CTP0373_010

AutoCAD SHX Text

CTP0373_009

AutoCAD SHX Text

Trailer

AutoCAD SHX Text


AutoCAD SHX Text


AutoCAD SHX Text


AutoCAD SHX Text


AutoCAD SHX Text


AutoCAD SHX Text

B

AutoCAD SHX Text


AutoCAD SHX Text


AutoCAD SHX Text


AutoCAD SHX Text

Ex. Ground

AutoCAD SHX Text

867

AutoCAD SHX Text

867.50

Appendix 3

P R E F E R R E D A L T E R N A T I V E S I T E P L A N

76

75

74


CO

MM

UN

ITY

PAR

K D

RIV

E - V

ARIA

BLE

WID

TH



7372

7172

73

170

D

B

C E


2:1

2:1

2:1

G

PROP.ASPHALT

PAVEMENT H

A

A

73.2 73.15

73.573.4

DD

73.15 73.3

73.4

69.5 70.5 71.5 71.7571.2570.7570.2569.7569.2569.0

J

K

LL

855

860

865

870

875

880

855

860

865

870

875

880

0+00 1+00 1+25

0+00

.00

1+03

.15

868.

72

867.

61

103.15' ~ 12" @ 1.08%

1

TC=8

70.3

9PR

OP.

CAT

CH

BAS

IN(A

A-S1

33B)

WIT

H 6

" x 1

2" S

IDE

INLE

TW

IND

OW

INV.

= 8

69.5

0

A

BC

FI

865

870

875

880

865

870

875

880

0+00 0+50

ELEV. = 873.00

BOTTOM ELEV.VARIES

2:1 2:1


PAGE

COUNTY RECORDER

EASEMENT REFERENCE



REVISIONS



RPD CKD CON. DR.CLD

COMPLETEDSHEET:

RECORD PLAN NO.

PROJECT TITLE:

DIVISION USE ONLY

INSPECTOR

CONTRACTOR

OWNER

DIVISION USE ONLY





/ 6

CC-18536


Ph: (614) 761-1661Fax: (614) 761-1328

WWW.BIRDBULL.COM

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sers

\aga

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r\app

data

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l\tem

p\Ac

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C-G

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/23/

2020

GRAPHIC SCALE

SCALE: 1" = 20'6040200

STORM STRUCTURE BEARING AND DISTANCE TABLESTRUCTURES BEARING DISTANCE

- 1 S55°28'54"W 101.74'

STORM STRUCTURE COORDINATE TABLE*PROPOSED AS-BUILT

# NORTHING EASTING NORTHING EASTING

765394.5180 1842198.2245

1 765336.3248 1842113.0624

LEGEND

EXISTING CONTOUR

PROPOSED CONTOUR













EXISTING VALVE

PROPOSED VALVE



68.5

868

CODED NOTES

3










INSTALL CONCRETE WHEEL STOPS ALONG THE EAST EDGE OF THE BASIN TO PROVIDE SEPARATION FORVEHICLES. MAINTAIN A 3' GAP BETWEEN WHEEL STOPS.

NOTE: IF THE EXISTING FENCE IS REMOVED OR DAMAGED , THE PROPERTY OWNER SHALL BE RESPONSIBLEFOR REPLACING IT TO MAINTAIN SEPARATION FROM THE BASIN.

DITCH SIDE SLOPES AND BOTTOM TO BE PLANTED WITH WITH EUONYMUS FORTUNEI WINTERCREEPER"COLORATUS", FOR STABILIZATION.

B

C

D


NO SCALE

STRUCTURE #1



HEAVY SOLIDS


OIL & DEBRIS

3'


(AA-S133B)

36"

12" OUTLETINV. = 868.72


MIN.6"



12" OUTLET PIPE

STEPS (AA-S119)


3'

3'

PLAN VIEWNO SCALE

(AA-S133B)

2.75" Ø ORIFICE


1/4 " THICKALUMINUM PLATE

12" OUTLET PIPE(BEHIND)

3" TYP.





NO SCALE



TYP. (1/2" DEEP)




EMBED POST42" MIN.




E

F

G

H


SCALE: 1" = 20' HORIZ., 1" = 5' VERT.

SCALE: 1" = 5'

GRAPHIC SCALE

151050

HORIZ.

VERT.

I

J

K

- BIANNUALLY AND AS NEEDED , - CLEAN AND REMOVE SEDIMENT FROM BASIN.

- MONTHLY - INSPECT THE OUTLET STRUCTURE AND ORIFICE PLATE AND REMOVEANY SEDIMENT AND DEBRIS.

BASIN MAINTENANCE SCHEDULE

L

AutoCAD SHX Text

Shed

AutoCAD SHX Text

Conc.

AutoCAD SHX Text

Conc.

AutoCAD SHX Text

Conc.

AutoCAD SHX Text

Comb. Curb & Gutter

AutoCAD SHX Text

Conc.

AutoCAD SHX Text

Building

AutoCAD SHX Text

Building

AutoCAD SHX Text

Building

AutoCAD SHX Text

Trailer

AutoCAD SHX Text

Trailer

AutoCAD SHX Text

Trailer

AutoCAD SHX Text

Wood Deck

AutoCAD SHX Text

Wood Deck

AutoCAD SHX Text


AutoCAD SHX Text

Ex. 36" Waterline

AutoCAD SHX Text


AutoCAD SHX Text


AutoCAD SHX Text


AutoCAD SHX Text

Ex. 18" Stm. (E01456)

AutoCAD SHX Text

Ex. 18" Stm. (CC08310)

AutoCAD SHX Text

Ex. 12" Stm. (E01456)

AutoCAD SHX Text

Ex. 12" Stm. (E01456)

AutoCAD SHX Text

Ex. 12" Stm. (E01456)

AutoCAD SHX Text

T0572

AutoCAD SHX Text

T0570

AutoCAD SHX Text

T0573

AutoCAD SHX Text

T0569

AutoCAD SHX Text

T0571

AutoCAD SHX Text

0641F01

AutoCAD SHX Text

CTP0373_010

AutoCAD SHX Text

CTP0373_009

AutoCAD SHX Text

Trailer

AutoCAD SHX Text


AutoCAD SHX Text


AutoCAD SHX Text


AutoCAD SHX Text


AutoCAD SHX Text


AutoCAD SHX Text

B

AutoCAD SHX Text


AutoCAD SHX Text


AutoCAD SHX Text


AutoCAD SHX Text

EX. CHAIN LINK FENCE

AutoCAD SHX Text

Ex. Ground

AutoCAD SHX Text

12" RCP NE @ 867.61 F/V 4" PVC S @ 869.99 F/V

AutoCAD SHX Text

F/V

AutoCAD SHX Text

Ex. Ground

AutoCAD SHX Text

T0573 (E-1456) - 1

AutoCAD SHX Text

T0573 (E-1456)

AutoCAD SHX Text

867

AutoCAD SHX Text

867.50

variance request and report to the stormwater drainage manual

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