5-70006.2 PCSM Plan Set.pdf

PDF 6 MB Posted Aug 14, 2026

Attached to: Tyrone Township Municipal Building - Phase 2
Solicitation number: Not on record
Issued by: Philadelphia County, Pennsylvania

About this file

Written by GovTribe AI · Sep 30, 2026

This is a Post-Construction Stormwater Management (PCSM) Plan Set for Tyrone Township in Perry County, Pennsylvania, prepared by Frederick, Seibert & Associates, Inc. (FSA Inc.) for the Tyrone Township Municipal Building project located at 3129 Shermans Valley Road, Loysville, PA 17047. The plan set consists of four sheets including a cover sheet, PCSM notes, PCSM plan, and profiles. The project involves removal of existing structures (municipal building, sheds, equipment building), pavement, gravel, and a septic system on approximately 2.75 acres (120,000 square feet) within the limit of disturbance. The primary stormwater management feature is an infiltration basin with emergency spillway designed to manage runoff from the proposed community hall and parking lot construction. Four inlets direct stormwater to the basin system, with outlet protection through riprap aprons and 15-18 inch HDPE pipes. The plan includes detailed specifications for permanent stabilization requiring minimum 70% perennial vegetative cover, planting soil meeting specific pH and nutrient criteria, seeding mixes for basins and embankments, and construction sequencing that requires basin construction after stone subbase placement but before building construction completion.

The plan designates Tyrone Township as the long-term owner and operator responsible for perpetual operation and maintenance of all stormwater conveyances and BMPs. Maintenance requirements include inspection schedules ranging from monthly during growing season for landscaping to quarterly for stormwater pipes and after every one-inch rainfall event for infiltration basins, with detailed protocols for sediment removal, vegetation management, riprap replacement, and structural integrity assessment. Soil infiltration testing identified variable rates ranging from 0.25 inches per hour to 6 inches per hour across four probe locations, informing basin design. The contractor is responsible for obtaining permits, protecting existing utilities, traffic control, PaOne Call notifications at least ten days before construction, and field testing with record drawings. A licensed professional or designee must be present during critical implementation stages including infiltration basin construction and outlet installation. The approved PCSM plan must remain available at the project site at all times, and upon permit termination, Tyrone Township must record an instrument within 45 days identifying the PCSM BMPs and providing long-term operation and maintenance covenant running with the land.

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File	Type	Posted
4-Tyrone Township Building - FINAL PLANS - PHASE 2 - REV0 - 07-06-2026.pdf	PDF	Aug 14, 2026
2-Phase 2 Scope of Work.pdf	PDF	Aug 14, 2026
8-Phase 2 Vendor Questions as of 8-28-26.pdf	PDF	Aug 14, 2026
1-Phase 2 Bid Packet.pdf	PDF	Aug 14, 2026
3-Phase 2 Site Plan.pdf	PDF	Aug 14, 2026
7-70006.2 ESC Plan Set.pdf	PDF	Aug 14, 2026
9-Pre-Bid Questions.pdf	PDF	Aug 14, 2026
6-70006.2 Land Development Set.pdf	PDF	Aug 14, 2026

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SITE

LOCATION

SHED TO BE REMOVED

MUNICIPAL BUILDING

TO BE REMOVED

SHED TO BE REMOVED

EQUIPMENT BUILDING

TO BE REMOVED

REMOVE

PAVEMENT

REMOVE GRAVEL

REMOVE SEPTIC

S 34°27'03" E 461.50'

N 53°20'27" E 243.90'

N 34°16'43" W

45.89'

N 38°44'16" E 104.56'

N 34°16'43" W

378.63'

S 55°06'28" W 345.10'

OH OH

O H

OH OH OH OH OH OH

H OH

WHITE LINE

DOUBLE

YW LINE36'

FM FM FM FM FM FM FM FM FM FM FM FM

10'

SEWER EASEMENT LINE

10' UTILITY EASEM

ENT

PER INST. 201306909

10' UTILITY EASEM

ENT

PER INST. 201308091 (TOW

NSHIP)

EX. FORCE MAIN (PRIVATE)

EX. FORCE MAIN (PRIVATE)IP (FOUND)

IP (FOUND)

CONC. MON.

(FOUND)

IP (FOUND)

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(FOUND)

CONC. MON.

(FOUND)

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PRIVATE ROW TO

NEIGHBORING LANDS

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GRAVEL

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GRAVEL

SURFACE

WELL

IP (FOUND)

SS MH SS MH

S S

SPIGOT

EX. MUNICIPAL

BUILDING

FFE: 653.35

EX. OUT BUILDING

SHED

EX. OUT BUILDING

SHED

SIGN SIGN

SIGN

SEPTIC

DRAIN

FIELD

END PUBLIC SEWER LATER

AND BEGIN PRIVATE SEWER LATERAL

SR 274

28' CARTWIDTH/ 36' ROW

LEGAL ROW LINE

N/F

YEARICK, CRAIG & LINDA

PIN: 270.126.01-001.001

DB 671 PG 66

LOT 1

PLAN 43 PG 25

20' M

BSL

20' M

BSL

20' M

BSL

30' MBSL

N/F

TYRONE TOWNSHIP

PIN: 270.111.00-031.000

DB 316 PG 307

LOT 3 & PART OF LOT 2

3.471 AC

N/F

HOOVER, JOHN & ARLENE

PIN: 270.111.00-032.000

DB 1348 PG 162

NEW LOT 2

48.69 AC

N/F

HOOVER, JOHN & ARLENE

PIN: 270.111.00-032.000

DB 1348 PG 162

NEW LOT 4

1.96 AC

N/F

HOOVER, JOHN & ARLENE

PIN: 270.111.00-032.000

DB 1348 PG 162

NEW LOT 5

1.14 AC

AbB

CaD CaC

SHERMANS VALLEY ROAD

UNNAMED TRIBUTARY

TO MONTOUR CREEK

CaD

637639

640641642

656657658

OWNER/DEVELOPER:

Tyrone Township

3129 Shermans Valley Road

LANDISBURG, PA 17040

ATTN: Michael Shaffer EMAIL: michael.shaffer73@yahoo.com

PHONE: (717) 789-4377

POST CONSTRUCTION SEDIMENTATION CONTROL PLAN

FOR

TYRONE TOWNSHIP MUNICIPAL BUILDING

SITUATE ALONG THE NORTH SIDE OF SHERMANS VALLEY ROAD

AND TO THE EAST OF LOYSVILLE

PERRY COUNTY, PENNSYLVANIA

SCALE: 1" = 2000' USGS MAP (Landisburg 2019)

VICINITY MAP

CIVIL ENGINEER / SURVEYOR:

FSA INC.

15 East Main Street New Bloomfield, PA 17068

PM: Keith Moore EMAIL: kmoore@fsa-inc.com

SHEET INDEX

TYPE NUMBER TITLE

PCSM-001 SHEET 1 COVER SHEET

PCSM-002 SHEET 2 PCSM NOTES

PCSM-003 SHEET 3 PCSM PLAN

PCSM-004 SHEET 4 PCSM PROFILES

****A COPY OF THE APPROVED POST CONSTRUCTION STORMWATER MANAGEMENT PLAN MUST BE AVAILABLE AT THE PROJECT SITE AT ALL TIMES.****

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I hereby certify that these documents were prepared or approved by me, and that I am a duly licensed professional under the laws of the State of:

Professional Certification:

__________________, License # _________________, Expiration Date __________________.

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70006.2

MJE 04-15-2024

KDM KMoore@fsa-inc.com

Property ID 270.110-031

N/A

Cover Sheet

PCSM-001

01 04

SP-___-____

Pennsylvania 043801E 09-30-2025

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1 inch = ft.

( IN FEET )

GRAPHIC SCALE

50 25

50 100 200

SOIL MAP

NOT TO SCALE

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I hereby certify that these documents were prepared or approved by me, and that I am a duly licensed professional under the laws of the State of:

Professional Certification:

__________________, License # _________________, Expiration Date __________________.

SHEET OF

S he rm an s Va lle y

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70006.2

MJE 04-15-2024

KDM Kmoore@fsa-inc.com

Property ID 270.110-031

N/A

Cover Sheet

PCSM-002

02 04

SP-___-____

Pennsylvania 043801E 09-30-2025

R ev ie w

3- 8-

Contractor Notes

1. The contractor shall be responsible for obtaining any required permits for the construction proposed on this plan.

2. The contractor shall be responsible for the replacement of any damaged or destroyed existing site features that are to remain.

3. All improvements shall meet the requirements of Tyrone Township.

4. The contractor shall be responsible for all traffic control, trench barricading, covering, sheeting and shoring, in accordance with applicable federal, state and local requirements.

5. The location of existing underground utilities must be field verified by the contractor prior to construction, excavation and blasting.

6. The contractor shall take all necessary precautions to protect the existing utilities and to maintain uninterrupted service. Any damage done due to the contractor's negligence shall be immediately and completely repaired at the contractor's expense.

7. The contractor shall legally dispose of all underground and above ground structures, features, and materials as required for the construction of the improvements shown on this plan.

8. The contractor shall ensure the positive drainage away from all buildings.

9. The contractor shall coordinate any and all utility service extensions/terminatinos with the utility owner.

10. The contractor is responsible for all field testing and "record drawings" as required by various authority requirements.

11. The contractor shall notify the appropriate authorities at least 10 days prior to the commencement of construction.

12. The contractor shall call PaOne Call prior to beginning construction.

Critical Stages of Implementation/Stormwater Management BMP Construction Observations

A licensed professional or designee shall be present on-site to inspect the critical stages of implementation of the PSCM Plan. The following critical stages of implementation shall be inspected (see Sequence of Construction for proper implementation):

1. Construction of Infiltration Basin -to ensure basin size and shape, and also to ensure that the subgrade is not compacted to facilitate proper infiltration Installation of principle outlet and emergency spillway for Infiltration Basin -to ensure outlets function correctly

Post-Construction Stormwater Management (PCSM) Standard Notes

PCSM Requirements A licensed professional or a designee shall be present onsite and be responsible during critical stages of implementation of the approved PCSM Plan. The critical stages may include the installation of the underground treatment or storage BMPs, structurally engineered BMPs, other BMPs as deemed appropriate by the department or the conservation district.

The PCSM Plan, inspection reports, and monitoring records shall be available for review and inspection by the department or the conservation district.

PCSM Long-Term Operations and Maintenance Requirements The permittee or co-permittee shall be responsible for long-term operation of the PCSM BMPs unless a different person is identified in the notice of termination and has agreed to the long-term operation and maintenance of the PCSM BMPs.

A permittee or co-permittee that fails to transfer the long-term operation and maintenance of the PCSM BMP or otherwise fails to comply with this requirement shall remain jointly and severally responsible with the landowner for long-term operation and maintenance of the PCSM BMPs located on the property.

Notice of Termination and Recording of Plan If the permittee is the landowner and will agree to be responsible for long-term operation and maintenance of the PCSM BMPs:

1. An instrument, will be signed by the permittee (as both grantor and grantee) and notarized. The instrument, along with attachments, shall (to satisfy 25 Pa.

Code §102.8(m)(2)):

a. identify the PCSM BMP(s),

b. provide for the necessary access related to long-term operation and maintenance of the PCSM BMP(s), and

c. provide notice that the responsibility for long-term operation and maintenance of the PCSM BMP(s) is a covenant that runs with the land that is binding upon and enforceable by subsequent grantees.

2. The above instrument and attachments listed below shall be recorded within 45 days of permit issuance or authorization. The proof of filing the instrument and attachments shall be provided to the Department or conservation district within 90 days of permit issuance or authorization.

a. approved PCSM plan

b. operation and maintenance plan (synonymous with the long-term operation and maintenance schedule included within the PCSM plan)

3. An operation and maintenance agreement will not need to be signed or recorded in this scenario because the permittee is the landowner.

4. Unless the location and dimensions of the PCSM BMPs on the record drawings are the same as those on the PCSM plan, there are no subsurface BMPs, all

BMPs are non-engineered and require minimal maintenance, and the operation and maintenance plan has not changed, the instrument will need to be amended in preparation for permit termination. The amended instrument will be recorded with the following attachments:

a. record drawings which accurately reflect as-built conditions

b. operation and maintenance plan (synonymous with the long-term operation and maintenance schedule included within the record drawings)

5. The permittee shall provide “proof of filing” the instrument and attachments in the form of a receipt from the county Recorder of Deeds Office and complete Section 7.b of the NOT form.

Post-Construction Stormwater Management Operation and Maintenance Owner/Operation

Tyrone Township 3129 Shermans Valley Road Loysville 17047, PA 17015

Acknowledgement of Responsibility

I hereby acknowledge that, I am responsible for the Post-Construction operation and maintenance of all storm water management conveyances and BMPs as state below:

Owner/Operator Date

Notes

1. All stormwater conveyances and BMPs shown on this plan shall be constructed by the contractor in accordance with the design, conditions and specifications identified on this plan. Ownership, operation, and maintenance of the storm water management facilities shall be the responsibility of the landowner, his successors and assigns in perpetuity, unless specifically identified otherwise herein.

2. Stormwater management conveyances and BMPs shall be operated and maintained in good working condition to ensure that they perform their design function, in a manner acceptable to the township and county.

3. The owner shall inspect each stormwater management conveyance and BMP after each 1" rainfall event or at the minimum schedule noted on this plan.

Appropriate action shall be taken to ensure that repair, replacement or other routine maintenance of the BMPs to ensure proper function and operation. All maintenance costs shall be borne by the owner. A written report documenting each inspection and all BMP repair and maintenance activities shall be kept by the property owner.

4. Municipal and county officials and their agents or employees shall have the right of access for inspection and shall have the right at their discretion to maintain or repair the facilities as necessary to restore them to their design conditions. The cost to complete the maintenance or repair shall be borne by the responsible property owner(s).

Construction Waste:

1. Anticipated waste materials for this project are rock, topsoil, subsoil, and building materials. Some rock, subsoil, and topsoil will be used on site during earth moving and construction of the proposed access drives and utilities installation. All building materials and wastes shall be removed from the site and recycled or disposed of in accordance with the Department's Solid Waste Management Regulations at 25 PA. Code 260.1 et seq., 271.1, and 287.1 et. No building materials or wastes or unused building materials shall be burned, buried, dumped, or discharged at the site.

Concrete Washout:

1. A compost sock washout detail has been provided, but prefabricated washout containers, self-installed washouts, or washwater recycling systems may be substituted as long as manufacturer specification and PA DEP requirements are met.

2. Sediment traps and basins may not be used as concrete washout devices.

3. Washout facilities should not be placed within 50' of storm drains, open ditches, or surface waters, in an area accessible for trucks and on slopes less than 2%, where possible.

4. Maintenance:

-All concrete washout facilities should be inspected daily. Damages or leaking washouts should be deactivated and repaired or replaced immediately.

-Accumalated materials should be removed when they reach 75% capacity.

-Plastic liners should be replaced with each cleaning of the washout facility.

Owernship, Operation and Maintenance Notes:

2. The owner shall inspect each stormwater management conveyance and BMP after each 1" rainfall event or at the minimum schedule noted on this plan.

3. A written report documenting each inspection and all BMP repair and maintenance activities shall be kept by the property owner.

5. Any debris, sediment, contamination, spills, replaced structures, etc. should be disposed of in a composting facility, trash container, or disposed or recycled in a manner as per the Department's Solid Waste Management Regulations at 25 Pa. Code 260.1 et seq., 271.1 and 287.1 et. and 25 Pa. Code 102.4(b)(5)(xi).

Infiltration Basin:;

Schedule:

-Inspect two times per year -Inspect after runoff events

Inspection/Maintenance:

-Inspect vegetation along the surface of the basins for any bare spots. Vegetation should be maintained in good condition. Repair and revegetate any bare spots -Vehicles should not be parked or driven on the basins. Care should be taken to avoid excessive compaction by mowers -Inspect basin after runoff events to ensure drawdown in 72 hours. Check outlet spillway to ensure there is no damage and it is functioning properly. Repair outlet spillway as necessary to restore to design conditions. Soil amendments may need to be added and or repaired to ensure infiltration.

-Inspect for an accumulation of sediment or debris. Remove any accumulated sediment from basins as necessary. Properly dispose of sediment.

Repair/replace any disturbed areas with amended soils to ensure proper infiltration.

-Inspect for damage to slope stability in the berms. Repair as necessary to design conditions.

-Inspect for signs of water contamination/spills. Properly remove.

-Inspect for sinkholes. Repair as per Sinkhole Repair Detail -Inspect for rills or gullies. These areas should be filled with topsoil, stabilized with erosion control matting, and reseeded.

-Vegetation should be inspected for unwanted or invasive growth. Unwanted growth should be removed and reseeded as necessary.

-Watering may need to be done during dry periods to maintain vegetative cover.

-Inspect stormwater pipes for debris and/or sediment. Properly remove and/or flush debris and/or sediment from stormwater pipes and dispose of sediment.

-Inspect the structural integrity of stormwater pipes and appurtenances. Repair or replace damaged pipes and appurtenances. Properly remove, recycle and dispose.

-Inspect for erosion at outlets. Inspect for loss of riprap. Replace riprap, as needed to maintain the original design specifications. Properly remove, recycle and dispose. If the specified riprap size is not adequate to control erosion, install a riprap of a larger size.

Stormwater Pipes and Appurtenances:

Schedule:

-Inspect on a quarterly basis -After every storm event greater than 1" Inspection/Maintenance:

-Inspect stormwater pipes for debris and/or sediment. Remove and/or flush debris and/or sediment from stormwater pipes and dispose of sediment in accordance with current sediment disposal procedures.

-Inspect the structural integrity of stormwater pipes and appurtenances. Repair or replace damaged pipes and appurtenances.

Riprap Outlet Protection:

Schedule:

-Inspect on a quarterly basis -After every storm event greater than 1" Inspection/Maintenance:

-Inspect for erosion at outlets.

-Inspect for loss of riprap.

-If the specified riprap size is not adequate to control erosion, install a riprap of a larger size.

-Replace riprap, as needed to maintain the original design specifications.

Landscaping & Vegetation;

Schedule:

-Inspect monthly during the growing season (April through November) Inspection/Maintenance:

-Inspect for dead portion of the plantings. Remove dead portion and dispose at an approved compost facility.

-Inspect for dead planting. Remove dead plantings and dispose in an approved composting facility. Replace dead planting.

-Inspect for diseased portion of plantings and for insects that may damage plant material. Remove diseased portion of planting and dispose in an approved compost facility. Treat unaffected plantings for any insects that may damage planting. If planting is too diseased, replace as necessary.

Permanent Stabilization

1. Permanent stabilization is defined as a minimum uniform 70% perennial vegetative cover or other permanent non-vegetative cover with a density sufficient to resist accelerated surface erosion and subsurface characteristics sufficient to resist sliding and other movements.

2. All topsoil shall be replaced at a minimum depth of at least 6 inches in order to promote stormwater infiltration and permanent vegetative stabilization on all disturbed areas to be permanently revegetated.

3. All topsoil shall be loosened to a depth of at least 4 inches. All objectionable material larger than 2 inches shall be removed.

4. Contractor shall provide soil testing pH before implementing permanent seeding. Limestone and fertilizer shall be applied uniformly in areas to be seeded and worked into the soil to a depth of 2 inches. In the absence of soil testing, apply limestone and fertilizer per the application rate specified below:

A. Limestone - pulv ag at 6 tons per acre.

B. Fertilizer - 100 lbs/acre N, 200 lbs/ac P205, 200 lbs/ac K20

5. Mulch of long stem straw shall be applied at an even application rate of 3 tons per acre with a surface covering of 100%. Mulch shall be either mechanically stabilized or stabilized by use of a tackifier.

6. Hydroseed is not considered stabilized until it germinates.

Areas of Minimized Total Disturbance - Grading

-Area shall not be subject to grading or movement of existing soils -Existing native vegetation in a healthy condition may not be removed -Invasive non-native vegetation may be removed -Pruning or other required maintenance of vegetation is permitted. Additional planting is permitted -Area shall be protected by having limits of disturbance clearly shown on all construction drawings and delineated in the field.

-The area not subject to grading shall be clearly delineated on the Stormwater Management Plan. If future grading or disturbance of this area occurs, subsequent stormwater management must be provided to address disturbance.

-Area shall not be located on the development project.

S 34°27'03" E 461.50'

N 53°20'27" E 243.90'

N 34°16'43" W

45.89'

N 38°44'16" E 104.56'

N 34°16'43" W

378.63'

S 55°06'28" W 345.10'

OH OH OH

O H

OH OH OH OH OH OH OH OH OH

O H

H OH OH

WHITE LINE

DOUBLE

YW LINE36'

FM FM FM FM FM FM FM FM FM FM FM FM FM FM FM FM FM FM FM FM FM

10'

SEWER EASEMENT LINE

10' UTILITY EASEM

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PER INST. 201306909

10' UTILITY EASEM

ENT

PER INST. 201308091 (TOW

NSHIP)

EX. FORCE MAIN (PRIVATE)

EX. FORCE MAIN (PRIVATE)IP (FOUND)

IP (FOUND)

CONC. MON.

(FOUND)

IP (FOUND)

CONC. MON.

(FOUND)

CONC. MON.

(FOUND)

IP (FOUND)

PRIVATE ROW TO

NEIGHBORING LANDS

PAVEMENT

IP (FOUND)

SS MH SS MH

EX. OUT BUILDING

SIGN SIGN

SIGN

END PUBLIC SEWER LATER

AND BEGIN PRIVATE SEWER LATERAL

SR 274

28' CARTWIDTH/ 36' ROW

LEGAL ROW LINE

N/F

YEARICK, CRAIG & LINDA

PIN: 270.126.01-001.001

DB 671 PG 66

LOT 1

PLAN 43 PG 25

20' M

BSL

20' M

BSL

20' M

BSL

30' MBSL

N/F

TYRONE TOWNSHIP

PIN: 270.111.00-031.000

DB 316 PG 307

LOT 3 & PART OF LOT 2

3.471 AC

N/F

HOOVER, JOHN & ARLENE

PIN: 270.111.00-032.000

DB 1348 PG 162

NEW LOT 2

48.69 AC

N/F

HOOVER, JOHN & ARLENE

PIN: 270.111.00-032.000

DB 1348 PG 162

NEW LOT 4

1.96 AC

N/F

HOOVER, JOHN & ARLENE

PIN: 270.111.00-032.000

DB 1348 PG 162

NEW LOT 5

1.14 AC

AbB

CaD CaC

SHERMANS VALLEY ROAD

UNNAMED TRIBUTARY

TO MONTOUR CREEK

CaD

637639

640641642643

656657658

S S

GRINDER

PUMP

EMERGENCY

SPILLWAY

FFE: 650'

OUTLET

STRUCTURE

649.5

S S

638639640

W W

INLET 1

INLET 2

INLET 3

INLET 4

INFILTRATION BASIN

NPDES

NPDES NPDES NPDES NPDES NPDES NPDES NPDES NPDES NPDES

NPDESNPDESNPDESNPDESNPDESNPDESNPDESNPDESNPDESNPDESNPDESNPDESNPDES

LOD

LOD LOD

LOD

LODLODLODLODLODLODLODLODLODLODLODLODLODLODLODLODLODLOD

LIMIT OF

DISTURBANCE

2.75 AC

120,000 SF

PROBE 21-1

PROBE 21-2

PROBE 21-3

TEST C 6"/HR

TEST B 3"/HR

TEST D 0.25"/HR

TEST A 0.5"/HR

OFF-SITE FLOW PATH

40' X 40' PAD

ELEV: 643'

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SHEET TITLE

PROJECT NO.

N G

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A P

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W N, M D

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I hereby certify that these documents were prepared or approved by me, and that I am a duly licensed professional under the laws of the State of:

Professional Certification:

__________________, License # _________________, Expiration Date __________________.

SHEET OF

S he rm an s Va lle y

Ro ad

Ty ro ne T ow ns hi p

P er ry C ou nt y, P

A Ty ro ne

T ow ns hi p

S he rm an s

Va lle y Ro ad , L an di sb ur g

) 7

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70006.2

MJE 04-15-2024

KDM kmoore@fsa-inc.com

PROPERTY ID

270.111-031

1" = 30'

PCSM

Plan

PCSM-003

03 04

SP-___-____

Pennsylvania 043801E 09-30-2025

R ev ie w

3- 8-

1 inch = ft.

( IN FEET )

GRAPHIC SCALE

30 15

30 60 160

NOT TO SCALE

INFILTRATION BASIN EMERGENCY SPILLWAY

3:1

10'

TOP OF BERM 642.00

3:1

SPILLWAY INV. 640.5

1.9'

NOT TO SCALE

INFILTRATION BASIN SECTION

3:1

TOP OF BERM 642.008'

BASIN BOTTOM 638.00

3:1

EMERGENCY SPILLWAY

ELEVATION 640.5

29LF 15" HDPE PIPE @1%

INV IN: 638.00

INV OUT: 637.73

PCSM Sequence of Construction

1. After laying down the stone subbase for the parking area, construct the Infiltration Basin and its outlets as shown.

2. apply seed to the Basin to allow vegetation to start.

3. Construct the proposed building .

4. Finalize construction of the parking area.

5. Seed & Stabilize the rest of the disturbed area.

6. Clean the riprap apron of the storm sewer system.

7. once 70% vegetation has been achieved remove all E&S controls.

Specifications for Infiltration Basin:

1. Planting Soil The soil shall be a uniform mix, free of stones, stumps, roots or other similar objects larger than two inches. No other materials or substances shall be mixed or dumped within the bioretention area that may be harmful to plant growth, or prove a hindrance to the planting or maintenance operations. The planting soil shall be free of Bermuda grass, Quack grass, Johnson grass, or other noxious weeds.

The planting soil shall be tested and shall meet the following criteria:

pH range 5.5 - 6.5 organic matter 1.5 - 4% (by weight) magnesium 35 lb./ac phosphorus (phosphate - P2 O5) 75 lb./ac potassium (potash - K2 O) 85 lb./ac soluble salts not to exceed 500 ppm

Should the pH fall out of the acceptable range, it may be modified (higher) with lime or (lower) with iron sulfate plus sulfur.

2. Vegetation Landscaping for the infiltration basin has been shown on the plan and meets Appendix B of the PA Stormwater Best Management Practices Manual.

3. Execution

a. Subgrade preparation

1. Existing sub-grade in Infiltration Basin shall NOT be compacted or subject to excessive construction equipment traffic.

2. Initial excavation can be performed during rough site grading but shall not be carried to within one feet of the final bottom elevation. Final excavation should not take place until all disturbed areas in the drainage area have been stabilized.

3. Where erosion of sub-grade has caused accumulation of fine materials and/or surface ponding in the graded bottom, this material shall be removed with light equipment and the underlying soils scarified to a minimum depth of 6 inches with a York rake or equivalent by light tractor.

4. Bring sub-grade of bioretention area to line, grade, and elevations indicated. Fill and lightly regrade any areas damaged by erosion, ponding, or traffic compaction. All bioretention areas shall be level grade on the bottom.

5. Halt excavation and notify engineer immediately if evidence of sinkhole activity or pinnacles of carbonate bedrock are encountered in the bioretention area.

b. Infiltration Basin Installation

1. Upon completion of sub-grade work, the Engineer shall be notified and shall inspect at his/her discretion before proceeding with bioretention installation.

2. For the subsurface storage/infiltration bed installation, amended soils should be placed on the bottom to the specified depth.

3. Planting soil shall be placed immediately after approval of sub-grade preparation/bed installation. Any accumulation of debris or sediment that takes place after approval of sub-grade shall be removed prior to installation of planting soil at no extra cost to the Owner.

4. Install planting soil (exceeding all criteria) in 18-inch maximum lifts and lightly compact (tamp with backhoe bucket or by hand). Keep equipment movement over planting soil to a minimum - do not over compact. Install planting soil to grades indicated on the drawings. Amended soils shall be tested for infiltration and results of the testing shall be provided to Monroe County Conservation District.

5. Plant trees and shrubs according to supplier's recommendations and only from mid-March through the end of June or from mid-September through mid-November.

6. Install 2-3” shredded hardwood mulch (minimum age 6 months) or compost mulch evenly as shown on plans. Do not apply mulch in areas where ground cover is to be grass or where cover will be established by seeding.

7. Protect Infiltration Basin from sediment at all times during construction. Hay bales, diversion berms and/or other appropriate measures shall be used at the toe of slopes that are adjacent to Infiltration Basin to prevent sediment from washing into these areas during site development.

8. When the site is fully vegetated and the soil mantle stabilized the plan designer shall be notified and shall inspect the Infiltration Basin drainage area at his/her discretion before the area is brought online and sediment control devices removed.

9. Water vegetation at the end of each day for two weeks after planting is completed.

Seeding Mix - Basins

55% orchardgrass 25% reed canarygrass 10% switchgrass 10% redtop

Seeding rate: 200 lbs per acre

Seeding Mix - Swales

55% orchardgrass 25% reed canarygrass 10% switchgrass 10% redtop

Seeding rate: 200 lbs per acre

Seeding Mix - Embankments

55% tall fescue 19% Hard fescue 10% perennial ryegrass 10% switchgrass 6% white clover

Seeding rate: 150 lbs per acre

24"x6" RECTANGULAR ORIFICE INV: 639.35

TOP OF GRATE 641

HEADWALL

RIPRAP

APPRON

AutoCAD SHX Text N

AutoCAD SHX Text shredded hardwood mulch (minimum age 6 months) or compost mulch evenly as shown on plans. Do not apply mulch in areas where

0+00 0+10 0+20 0+30 0+40 0+50 0+60 0+70 0+80 0+90 1+00 1+10 1+20

0+00 0+10 0+20 0+30 0+40 0+50 0+60 0+70 0+80 0+90 1+00

0+00 0+10 0+20 0+30 0+40 0+50 0+60 0+70 0+80

0+90 1+00

1+10 1+20

1+30 1+40

120LF 15" HDPE @0.65%

95LF 15" HDPE @1.02%

76LF 15" HDPE @1.4%

INLET 1

TOG: 647.28

INV OUT: 644.53'

INLET 2

TOG: 648'

INV IN: 643.53'

INV OUT: 643.53'

INLET 3

TOP: 648.78'

INV IN: 642.78'

INV OUT: 642.78'

15" IN & OUT

I1 TO I2

HORZ: 1" = 10'

VERT: 1" = 5'

I2 TO I3

HORZ: 1" = 10'

VERT: 1" = 5'

I3 TO I4

HORZ: 1" = 10'

VERT: 1" = 5'

I4 TO OUTLET

HORZ: 1" = 10'

VERT: 1" = 5'

0+00 0+10 0+20 0+30 0+40 0+50 0+60 0+70 0+80 0+90 1+00

1+10

122LF 18" HDPE @ 2.8%

INLET 4

TOP: 645.72'

INV IN: 641.72' 15"

INV OUT: 641.47' 18"

TYPE D ENDWALL

INV OUT: 638'

INLET 4

TOP: 645.72'

INV IN: 641.72' 15"

INV OUT: 641.47' 18"

INLET 3

TOP: 648.78'

INV IN: 642.78'

INV OUT: 642.78'

15" IN & OUT

INLET 2

TOG: 648'

INV IN: 643.53'

INV OUT: 643.53'

1+20 1+30

1.5R-414.51018EW-1

0% SLOPE

d (FEET)

THICKNESS

PLACEMENT

DIAMETER, D

(INCH)

PIPE

ENDWALL

ROCK, CLASS R-*

W (FEET)

WIDTH

L (FEET)

LENGTH ROCK,

CLASS R-*

SECTION PENNDOT CLASS 2,

TYPE A GEOTEXTILE

PIPE

L d

NOT TO SCALE

RIP-RAP OUTLET PROTECTION

TWO #4 BARS

'L'

12''

6'' MIN.

12''

6''

SIDE

ELEVATION

PLAN

'D'

1/2" DIA. GALV. GUARD BARS ON 6"

CENTERS ATTACHED WITH 3/8" DIA.

STAINLESS STEEL ANCHORS

SECTION

TYPE M INLET TOP

NOT TO SCALE

PLAN

6" 2' 6"

#3 REBAR

INLET GRATE

2'-2 1/2"

3'- 11 3/4"

4'-9 1/4"PLAN

SECTION

NOT TO SCALE

PRECAST INLET BOX - 2' x 4'

* RISER SECTIONS AVAILABLE

FROM 12" TO 60"

#3 REBAR @ 12"

HOLE CAST

AS REQUIRED

5'-7" MAX

BOX HEIGHT

3'-9 1/4" 6"

TYPE 'M' INLET

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SHEET TITLE

PROJECT NO.

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I hereby certify that these documents were prepared or approved by me, and that I am a duly licensed professional under the laws of the State of:

Professional Certification:

__________________, License # _________________, Expiration Date __________________.

SHEET OF

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70006.2

MJE 04-15-2024

KDM KMoore@fsa-inc.com

PROPERTY ID

270.111-031

AS SHOWN

PCSM

Plan

PCSM-004

04 04

SP-___-____

Pennsylvania 043801E 09-30-2025

3- 8-

1 inch = ft.

( IN FEET )

GRAPHIC SCALE

10 5

10 20 40

Sheets and Views

70006.2 PCSM-1 Cover Sheet-Layout

70006.2 PCSM-2 Notes-Layout

70006.2 PCSM-3 PCSM Plan-Layout

70006.2 PCSM-4 Profiles-Layout

File details come from the government source that posted it. Updated Sep 30, 2026.