6-260107 BBSA PRP Plan reduced.pdf

PDF 15 MB Posted Apr 29, 2026

Attached to: Spyglass Hill Road Stormwater Basins 1 & 2 Retrofit and Broad Street Rain Garden, Contract No. 26-01
Solicitation number: Not on record
Issued by: Northampton County, Pennsylvania

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Written by GovTribe AI · May 12, 2026

This construction plan set documents the Spyglass Hill Road Stormwater Basins 1 & 2 Retrofit and Broad Street Rain Garden project prepared by Colliers Engineering & Design for the Bath Borough Stormwater Authority in Bath, Pennsylvania, Northampton County. The project involves retrofitting two existing detention basins (Basin 1 at 200 Spyglass Hill Road, 11.61 acres; Basin 2 at Northampton Street, 1.95 acres) into infiltration basins and constructing a rain garden on Northampton Area School District property at 300 Allen Street (30.83 acres). Work includes modification of outlet control structures with existing orifices to remain at current elevations, removal and replacement of perimeter fencing with 6-foot chain link fence and double swing gates, excavation to specified soil strata with minimum 16-inch depth, installation of engineered soil media, vegetation seeding using Ernst Seed Mix 127 or 180, placement of stone forebays, and comprehensive erosion and sediment control measures. A mandatory pre-bid meeting is scheduled for 10:00 AM on Tuesday, May 12, 2026, at the Bath Borough Municipal Building, 121 South Walnut Street, Bath, PA 18014. Sealed bids are due by 12:00 Noon on Friday, May 22, 2026. The plans reference infiltration testing reports dated September 22, 2025, a survey completed September 29, 2025, and stormwater memoranda from October 2025, with design infiltration rates ranging from 0.00 to 4.70 inches per hour depending on test location and soil stratum.

Bid security of at least ten percent of the maximum bid price is required in the form of a certified check. All bid documents and solicitation details are available through PennBid at https://pennbid.bonfirehub.com/. The project specifications require compliance with Pennsylvania Department of Transportation Publication 408 and Publication 72 standards, municipal standards, and the Pennsylvania Underground Utility Protection Law. Construction shall proceed in defined phases with confirmation infiltration testing during and after soil media placement at a rate of four to six tests per acre, witnessed by the Borough Engineer and directed by a geotechnical engineer. Operations and maintenance schedules for all three stormwater management facilities are provided, requiring annual inspections, vegetation maintenance, sediment removal when accumulations reach fifty percent of forebay height, and immediate restoration of erosion conditions. Bid documents and technical questions are to be directed through the PennBid platform, and all earth disturbance activities require notification to the Pennsylvania One Call System 1-800-242-1776 between three and ten working days prior to excavation or demolition work.

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Other files

File	Type	Posted
3-Technical Specs BBSA 26-01.pdf	PDF	Apr 29, 2026
1-Public Works Employment Verification Form.pdf	PDF	Apr 29, 2026
5-2026 Advertisement - Bath Basin Retrofit Bid.pdf	PDF	Apr 29, 2026
4-Prevailing Wage Rates.pdf	PDF	Apr 29, 2026
2-Front End Specs - BBSA Spyglass Hill Road - Broad Street Raingarden.pdf	PDF	Apr 29, 2026

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SHEET INDEX

1 C-001 COVER SHEET

2 C-002 GENERAL CIVIL LEGEND & NOTES

3 C-101 OVERALL EXISTING CONDITIONS PLAN

4 C-102 BASIN 1 EXISTING CONDITIONS & DEMO PLAN - SHEET 1

5 C-103 BASIN 2 EXISTING CONDITIONS & DEMO PLAN - SHEET 2

6 C-104 RAIN GARDEN EXISITNG CONDITIONS PLAN - SHEET 3

7 C-121 BASIN 1 GRADING & DRAINAGE PLAN - SHEET 1

8 C-122 BASIN 2 GRADING & DRAINAGE PLAN - SHEET 2

9 C-123 RAIN GARDEN GRADING & DRAINAGE PLAN - SHEET 3

10 c-511 SITE DETAILS

11 C-521 GRADING & DRAINAGE DETAILS

12 C-701 E&SPC NOTES

13 C-702 E&SPC DETAILS

Engineering & Design

Architecture, Landscape Architecture,Surveying, CT P.C.Engineering& Design, Architecture, Landscape Architecture,Surveying, CT P.C.Engineering& Design, UNAUTHORIZED ALTERATION OR ADDITION TO A SURVEY OR ENGINEERING DOCUMENT BEARING A LICENSED LAND SURVEYOR OR PROFESSIONAL ENGINEER'S SEAL IS A VIOLATION OF SECTION 7209, SUB-DIVISION 2, OF THE NEW YORK STATE EDUCATION LAW. ONLY DOCUMENTS WITH THE LAND SURVEYOR OR PROFESSIONAL ENGINEER'S SEAL ARE GENUINE TRUE AND CORRECT COPIES OF THE LAND SURVEYOR OR PROFESSIONAL ENGINEER’S ORIGINAL WORK AND OPINION.UNAUTHORIZED ALTERATION OR ADDITION TO AN ARCHITECTURAL DOCUMENT BEARING A LICENSED PROFESSIONAL ARCHITECT'S SEAL IS A VIOLATION OF SECTION 8 NYCRR 69.5(b), OF THE NEW YORK STATE EDUCATION LAW. ONLY DOCUMENTS WITH THE PROFESSIONAL ARCHITECT'S SEAL ARE GENUINE TRUE AND CORRECT COPIES OF THE PROFESSIONAL ARCHITECT’S ORIGINAL WORK AND OPINION.C:

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REV DATE DESCRIPTION

DRAWING NUMBER:

SHEET NAME:

Copyright © 2026. Colliers Engineering & Design All Rights Reserved. This drawing and all the information contained herein is authorized for use only by the party for whom the services were contracted or to whom it is certified. This drawing may not be copied, reused, disclosed, distributed or relied upon for any other purpose without the express written consent of

Colliers Engineering & Design.

NOTE: DO NOT SCALE DRAWINGS FOR CONSTRUCTION.

Phone:

www.colliersengineering.com

SCALE:

DATE ISSUED:

REVIEWED BY:

PROJECT NUMBER:

DRAWN BY:

C O N S U L T I N GENGINEERS + SURVEYING

BATH BOROUGH

STORMWATER

AUTHORITY

BBSA POLLUTION

REDUCTION PLAN

SPYGLASS HILL ROAD AND

BROAD STREET

BOROUGH OF BATH

NORTHAMPTON COUNTY

PENNSYLVANIA

AS SHOWN

11/21/2025

MRC

MRC DFW

BBSA0002

OF 12

1 12/19/25 REVISED PER COMMENTS FROM MEETING

WITH BATH BOROUGH.

2 01/07/26 REVISED TO INCLUDE FENCE REPLACEMENT

AND DETAILS.

LEHIGH VALLEY

1110 American Parkway, Building 10, Suite F-200B Allentown, PA 18109

610.868.4201

COLLIERS ENGINEERING & DESIGN, INC. DOING

BUSINESS AS MASER CONSULTING

CONSTRUCTION PLANS

01000 1000

SCALE : 1" = 1000'

CONSTRUCTION PLANS

BATH BOROUGH STORMWATER AUTHORITY POLLUTION REDUCTION PLAN:

SPYGLASS HILL ROAD STORMWATER BASINS RETROFIT &

BROAD STREET RAIN GARDEN

PARCELS K6NW2-6-1, K6NW3-1-19, K6-10-4

BOROUGH OF BATH, NOTHAMPTON COUNTY, PENNSYLVANIA

USGS MAP

SOURCE: USGS CATASAUQUA, PA QUADRANGLE - 7.5-MINUTE SERIES (2023)

01000 1000

SCALE : 1" = 1000'

LOCATION MAP

SOURCE: PEMA ORTHOIMAGERY COLOR (1/2FT) (2023)

PREPARED FOR:

BATH BOROUGH STORMWATER AUTHORITY

121 SOUTH WALNUT STREET

BATH, PA 18014

BASIN 1

BASIN 2

RAIN GARDEN

BASIN 1

BASIN 2

RAIN GARDEN

COVER SHEET

C-001

A. ALL NOTES PROVIDED WITHIN THIS PLAN SET, REGARDLESS OF WHICH SHEET THE NOTE IS PROVIDED, APPLY TO ALL SHEETS IN THIS PLAN SET, UNLESS SPECIFICALLY STATED OTHERWISE.

B. SPECIFIC RESOURCES, TECHNICAL REPORTS, DESIGN DOCUMENTS, ET. AL. RELATED TO THIS PROJECT

INCLUDE (BUT MAY NOT BE LIMITED TO) THE FOLLOWING:

a. SURVEY COMPLETED BY COLLIERS ENGINEERING AND DESIGN, DATED SEPTEMBER 29, 2025

b. INFILTRATION TESTING REPORT, DATED SEPTEMBER 22, 2025

c. STORMWATER MEMORANDUM ENTITLED "BBSA POLLUTION REDUCTION PLAN – SPYGLASS HILL ROAD

BASINS RETROFIT" DATED OCTOBER 2025

d. STORMWATER MEMORANDUM ENTITLED "BBSA POLLUTION REDUCTION PLAN – BROAD STREET RAIN

GARDEN" DATED OCTOBER 2025

e. TEMPORARY ACCESS EASEMENT AGREEMENT DATED JULY 17TH, 2025 GRANTED BY THE OWNER OF 117

SPYGLASS HILL ROAD TO THE BOROUGH OF BATH.

C. CONTRACTOR IS RESPONSIBLE FOR OBTAINING ALL ABOVE DOCUMENTS AND FAMILIARIZING THEMSELVES

WITH THE SAME FOR APPLICATION PRIOR TO, DURING, AND FOLLOWING CONSTRUCTION.

D. DRAWING BACKGROUND IS BASED UPON A BOUNDARY AND TOPOGRAPHIC SURVEY PERFORMED BY

COLLIERS ENGINEERING & DESIGN SEPTEMBER 29, 2025.

E. THIS IS A SITE DEVELOPMENT PLAN AND UNLESS SPECIFICALLY NOTED ELSEWHERE HEREON, IS NOT A

SURVEY.

F. THE HORIZONTAL DATUM IS RELATIVE TO THE PENNSYLVANIA SOUTH STATE PLANE COORDINATE SYSTEM

AND ADJUSTED TO NAD 1983. THE VERTICAL DATUM IS RELATIVE TO NAVD 1988.

G. HORIZONTAL AND VERTICAL CONTROL:

BENCHMARK 1 - LAT: 040.7306 LONG: -075.3901 EL: 605.04

MONUMENT FOUND: CAPPED REBAR

BENCHMARK 2 - LAT: 040.7312 LONG: -075.3902 EL: 607.20

MONUMENT FOUND: CAPPED REBAR

BENCHMARK 3 - LAT: 040.7286 LONG: -075.3877 EL: 605.04

MONUMENT FOUND: MAG NAIL SET IN TOP OF CURB

BENCHMARK 4 - LAT: 040.7284 LONG: -075.3873 EL: 577.75

MONUMENT FOUND: MAG NAIL SET IN TOP OF CURB

BENCHMARK 5 - LAT: 040.7228 LONG: -075.3873 EL: 425.82

MONUMENT FOUND: MAG NAIL

BENCHMARK 6 - LAT: 040.7227 LONG: -075.3844 EL: 424.91

MONUMENT FOUND: MAG NAIL

H. THE CONTRACTOR IS RESPONSIBLE FOR ESTABLISHING NEW HORIZONTAL AND VERTICAL CONTROL

BENCHMARK POINTS PRIOR TO ANY SITE DEMOLITION OR SITE WORK.

I. THE CONTRACTOR SHALL CONTACT COLLIERS ENGINEERING AND DESIGN TO COORDINATE

CONSTRUCTION STAKEOUT/LAYOUT. THE CONTRACTOR SHALL RETAIN A PROFESSIONAL LAND SURVEYOR

REGISTERED IN THE COMMONWEALTH OF PENNSYLVANIA TO PERFORM ALL CONSTRUCTION

STAKEOUT/LAYOUT. CONTRACTOR IS RESPONSIBLE FOR ALL COSTS ASSOCIATED WITH CONSTRUCTION

STAKEOUT/LAYOUT.

J. LOCATIONS OF EXISTING UTILITIES SHOWN ON THE PLAN HAVE BEEN DEVELOPED FROM EXISTING UTILITY

RECORDS AND/OR ABOVE GROUND EXAMINATION OF THE SITE. COMPLETENESS OR ACCURACY OF

LOCATION, SIZE AND DEPTH OF UNDERGROUND UTILITIES OR STRUCTURES CANNOT BE GUARANTEED. THE CONTRACTOR SHALL USE EXTREME CAUTION WHEN WORKING ADJACENT TO EXISTING UTILITIES SUCH AS BUT NOT LIMITED TO POWER, COMMUNICATIONS, WATER OR GAS LINES TO PREVENT DAMAGE TO THESE LINES. IF TEST PITS ARE REQUIRED TO LOCATE EXISTING UTILITIES THEY SHALL BE PERFORMED BY HAND DIGGING OR VACUUM EXCAVATION. THE CONTRACTOR SHALL COMPLY WITH THE PROVISIONS OF THE PENNSYLVANIA UNDERGROUND UTILITY PROTECTION LAW (PA ACT 287 OF 1974, AS AMENDED BY ACT 50 OF 2017 73 P.S. SECTION 176 ET. SEQ. AND ANY SUBSEQUENT AMENDMENTS/MODIFICATIONS). THE CONTRACTOR SHALL NOTIFY THE PA ONE CALL SYSTEM AT 1-800-242-1776 NO LESS THAN THREE (3) NOR MORE THAN TEN (10) WORKING DAYS PRIOR TO THE START OF EXCAVATION OR DEMOLITION WORK.

K. EXCAVATION WITHIN TEN (10) HORIZONTAL FEET OF UNDERGROUND UTILITIES SHALL BE PERFORMED BY

HAND DIGGING OR VACUUM EXCAVATION.

L. THE CONTRACTOR SHALL COORDINATE ALL PROPOSED UTILITY DEMOLITION/ALTERATIONS WITH PROPERTY OWNER, UTILITY OWNER AND MUNICIPALITY PRIOR TO START OF WORK. ANY PROPOSED INTERRUPTIONS TO UTILITY SERVICES SHALL BE SCHEDULED WITH PROPERTY OWNER, UTILITY OWNER AND MUNICIPALITY A MINIMUM OF TEN (10) WORKING DAYS PRIOR TO SCHEDULED UTILITY INTERRUPTION UNLESS A MORE STRINGENT SCHEDULING REQUIREMENT IS REQUIRED BY PROPERTY OWNER, UTILITY

OWNER OR MUNICIPALITY.

M. UNLESS NOTED OTHERWISE, ALL EXISTING UTILITIES SHALL REMAIN ACTIVE AT ALL TIMES. TEMPORARY BYPASS SYSTEMS SHALL BE PROVIDED BY THE CONTRACTOR AS REQUIRED TO MAINTAIN UTILITIES ACTIVE DURING CONSTRUCTION. IN THE EVENT THAT ANY UTILITIES TO THE FACILITY MUST BE SHUT OFF DURING

CONSTRUCTION, THE CONTRACTOR SHALL OBTAIN OWNER APPROVAL PRIOR TO ANY OUTAGE.

N. THE CONTRACTOR SHALL PROTECT ALL EXISTING UTILITY STRUCTURES SUCH AS BUT NOT LIMITED TO VAULT HATCHES, MANHOLE COVERS, VALVE COVERS, UTILITY POLES, GUY WIRES AND HYDRANTS THAT ARE

TO REMAIN IN PLACE AND UNDISTURBED DURING CONSTRUCTION.

O. UNLESS NOTED OTHERWISE, THE CONTRACTOR SHALL ADJUST ALL EXISTING UTILITY STRUCTURES AND COVERS, SUCH AS BUT NOT LIMITED TO MANHOLES, CLEANOUTS, FRAMES, GRATES AND VALVES THAT ARE

TO REMAIN, TO THE FINISH GRADE ELEVATIONS AS REQUIRED.

P. LOCATIONS OF ALL ITEMS, AND ALL DIMENSIONS AND CONDITIONS MUST BE CHECKED AND VERIFIED IN THE FIELD BEFORE STARTING WORK. ANY DISCREPANCY SHALL BE CALLED TO THE ATTENTION OF THE ENGINEER FOR A RESOLUTION BEFORE PROCEEDING WITH THE WORK. THE CONTRACTOR SHALL VERIFY

ALL ELEVATIONS WITH THE VERTICAL AND HORIZONTAL CONTROL BENCHMARK(S).

Q. THE CONTRACTOR SHALL PRESERVE AND PROTECT ALL EXISTING TREES NOT SCHEDULED TO BE REMOVED

AS INDICATED ON THE PLAN.

R. THE CONTRACTOR SHALL ENSURE THAT ALL STORM DRAIN INLETS, CATCH BASINS, SWALES, ETC. WITHIN AND NEAR THE PROJECT AREA ARE KEPT FREE FROM MATERIALS THAT MAY HAMPER THE PERFORMANCE OF THE DRAINAGE SYSTEM. UPON COMPLETION OF THE PROJECT, THE CONTRACTOR SHALL REMOVE ALL ACCUMULATED SEDIMENT, DEBRIS, EQUIPMENT AND DISPOSE OF ALL UNSUITABLE OR EXCESS MATERIALS FROM THE PROJECT SITE AND PROPERTY IN ACCORDANCE WITH ALL LOCAL, STATE AND FEDERAL

REGULATIONS.

S. PERMANENT STORMWATER MANAGEMENT FACILITIES SHALL REMAIN A PERMANENT PART OF THE

TOPOGRAPHY.

T. SPOT ELEVATIONS INDICATE FINISH SURFACE ELEVATION UNLESS OTHERWISE NOTED ON THE PLAN. ALL

GRADES SHALL BE SMOOTH AND CONTINUOUS.

U. ANY DAMAGE TO OFF-SITE RIGHT OF WAY, PUBLIC ROADS OR ADJACENT PROPERTIES SHALL BE REPAIRED

IMMEDIATELY AT THE CONTRACTOR'S EXPENSE UNLESS OTHERWISE NOTED.

V. THE CONTRACTOR SHALL BE RESPONSIBLE FOR PROTECTING ALL EXISTING AND NEW WORK FROM DAMAGE. ANY DAMAGE CAUSED BY CONSTRUCTION ACTIVITIES SHALL BE REPAIRED IMMEDIATELY AT THE

CONTRACTOR'S EXPENSE UNLESS OTHERWISE NOTED.

W. THE CONTRACTOR SHALL PROVIDE ADEQUATE BARRIERS, FENCES OR OTHER MEASURES TO KEEP

VEHICULAR TRAFFIC AND PEDESTRIAN TRAFFIC AWAY FROM THE CONSTRUCTION AREA.

X. THE CONTRACTOR SHALL PROVIDE ADEQUATE DUST CONTROL MEASURES, FOR ALL DISTURBED AREAS, AS WARRANTED, TO MINIMIZE THE TRANSPORT OF SOIL BY WIND AND TRAFFIC. THE CONTRACTOR SHALL MINIMIZE THE AREA DISTURBED / SUBJECT TO WIND EROSION AND THE TIME THAT THE AREA WILL BE

EXPOSED TO WIND EROSION.

Y. THE CONTRACTOR SHALL BE RESPONSIBLE FOR THE SECURITY AND MAINTENANCE OF THE CONSTRUCTION SITE AT ALL TIMES. ALL CONSTRUCTION DEBRIS SHALL BE REMOVED FROM THE SITE ON A DAILY BASIS, IN ACCORDANCE WITH LOCAL, STATE AND FEDERAL REGULATIONS. BURNING OF ANY DEBRIS WILL NOT BE

PERMITTED.

Z. THE CONTRACTOR IS RESPONSIBLE FOR PROJECT AND CONSTRUCTION SAFETY, INCLUDING PROVISION OF

ALL APPROPRIATE SAFETY DEVICES AND TRAINING REQUIRED.

AA. ALL INGRESS AND EGRESS TO THE CONSTRUCTION SITE AND STAGING/LAYDOWN AREAS SHALL BE KEPT ACCESSIBLE AND UNOBSTRUCTED AT ALL TIMES. CONSTRUCTION EQUIPMENT OR VEHICLES WILL NOT BE

PERMITTED TO OBSTRUCT ROADWAYS AND/OR PASSAGEWAYS.

AB. THE CONTRACTOR SHALL BE RESPONSIBLE TO OBTAIN ALL REQUIRED CONSTRUCTION PERMITS FOR

COMPLETING THE WORK.

AC. CONSTRUCTION SHALL BE IN ACCORDANCE WITH MUNICIPALITY STANDARDS AND SPECIFICATIONS (LATEST

EDITION).

AD. CONSTRUCTION SHALL BE IN ACCORDANCE WITH PENNDOT PUBLICATION 408 SPECIFICATIONS, LATEST EDITION, AND PENNDOT PUBLICATION 72 STANDARDS FOR ROADWAY CONSTRUCTION, LATEST EDITION, UNLESS OTHERWISE SPECIFIED OR MORE STRINGENT REQUIREMENTS EXIST.

AE. IN THE EVENT OF A CONFLICT AMONG THESE REQUIREMENTS AND/OR PLANS, THE MORE RESTRICTIVE REGULATION SHALL APPLY OR THE CONTRACTOR SHALL OBTAIN CLARIFICATION FROM THE ENGINEER IN

WRITING.

GENERAL SITE/CIVIL NOTES

BASIN 1 PARCEL:

ADDRESS: 200 SPYGLASS HILL ROAD

BATH, PA 18014

NORTHAMPTON COUNTY, PENNSYLVANIA

TOTAL PROPERTY AREA: 11.61 AC (505,732 SF)

BASIN 2 PARCEL:

ADDRESS: NORTHAMPTON STREET (NO NUMBERED ADDRESS)

BATH, PA 18014

NORTHAMPTON COUNTY, PENNSYLVANIA

TOTAL PROPERTY AREA: 1.95 AC (84,942 SF)

RAIN GARDEN PARCEL:

ADDRESS: 300 ALLEN STREET

BATH, PA 18014

NORTHAMPTON COUNTY, PENNSYLVANIA

TOTAL PROPERTY AREA: 30.83 AC (1,342,955 SF)

SITE DATA

SITE UTILITIES CONTACTS

UTILITY TYPE: WATER/SANITARY

COMPANY: BATH BOROUGH AUTHORITY

ADDRESS: 160 MILL STREET, BATH, PA 18014

PHONE: 610-837-0652

UTILITY TYPE: STORM SEWER

COMPANY: BATH BOROUGH STORMWATER AUTHORITY

ADDRESS: 121 SOUTH WALNUT STREET, BATH, PA 18014

PHONE: 610-837-6525

Engineering & Design

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REV DATE DESCRIPTION

DRAWING NUMBER:

SHEET NAME:

Copyright © 2025. Colliers Engineering & Design All Rights Reserved. This drawing and all the information contained herein is authorized for use only by the party for whom the services were contracted or to whom it is certified. This drawing may not be copied, reused, disclosed, distributed or relied upon for any other purpose without the express written consent of

Colliers Engineering & Design.

NOTE: DO NOT SCALE DRAWINGS FOR CONSTRUCTION.

Phone:

www.colliersengineering.com

SCALE:

DATE ISSUED:

REVIEWED BY:

PROJECT NUMBER:

DRAWN BY:

C O N S U L T I N GENGINEERS + SURVEYING

BATH BOROUGH

STORMWATER

AUTHORITY

BBSA POLLUTION

REDUCTION PLAN

SPYGLASS HILL ROAD AND

BROAD STREET

BOROUGH OF BATH

NORTHAMPTON COUNTY

PENNSYLVANIA

AS SHOWN

11/21/2025

MRC

MRC DFW

BBSA0002

OF 12

1 12/19/25 REVISED PER COMMENTS FROM MEETING

WITH BATH BOROUGH.

2 01/07/26 REVISED TO INCLUDE FENCE REPLACEMENT

AND DETAILS.

LEHIGH VALLEY

1110 American Parkway, Building 10, Suite F-200B Allentown, PA 18109

610.868.4201

COLLIERS ENGINEERING & DESIGN, INC. DOING

BUSINESS AS MASER CONSULTING

CONSTRUCTION PLANS

GENERAL EXISTING

CONDITIONS LEGEND

ABBREVIATIONS

H Y D

NOTE: THIS IS A GENERAL SITE CIVIL LEGEND. ALL OF

THE ABOVE SYMBOLS/ABBREVIATIONS MAY NOT

APPEAR ON THE PLAN

GENERAL CIVIL

LEGEND AND NOTES

C-002

BASIN 1 - SHEET 1

BASIN 2 - SHEET 2

RAIN GARDEN - SHEET 3

Engineering & Design

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-1

B y:

o n

-0

REV DATE DESCRIPTION

DRAWING NUMBER:

SHEET NAME:

Colliers Engineering & Design.

NOTE: DO NOT SCALE DRAWINGS FOR CONSTRUCTION.

Phone:

www.colliersengineering.com

SCALE:

DATE ISSUED:

REVIEWED BY:

PROJECT NUMBER:

DRAWN BY:

C O N S U L T I N GENGINEERS + SURVEYING

BATH BOROUGH

STORMWATER

AUTHORITY

BBSA POLLUTION

REDUCTION PLAN

SPYGLASS HILL ROAD AND

BROAD STREET

BOROUGH OF BATH

NORTHAMPTON COUNTY

PENNSYLVANIA

AS SHOWN

11/21/2025

MRC

MRC DFW

BBSA0002

OF 12

1 12/19/25 REVISED PER COMMENTS FROM MEETING

WITH BATH BOROUGH.

2 01/07/26 REVISED TO INCLUDE FENCE REPLACEMENT

AND DETAILS.

LEHIGH VALLEY

1110 American Parkway, Building 10, Suite F-200B Allentown, PA 18109

610.868.4201

COLLIERS ENGINEERING & DESIGN, INC. DOING

BUSINESS AS MASER CONSULTING

CONSTRUCTION PLANS

N O

RTH

N O

RTH

200 200 400

SCALE : 1" = 200'

OVERALL EXISTING

CONDITIONS & LOCATION MAP

C-101

LOD

LOD LOD

LOD

SOIL LEGEND

SOIL NAME MAP UNIT SYMBOL HYDROLOGIC SOIL

GROUP

BERKS-WEIKERT COMPLEX, 8 TO 15

PERCENT SLOPES BkC B

URBAN LAND-UDORTHENTS, SHALE AND

SANDSTONE COMPLEX, 8 TO 25

PERCENT SLOPES

UusD C (ASSUMED)

WEIKERT-BERKS COMPLEX, 15 TO 25

PERCENT SLOPES WkD D

INFILTRATION TESTING SUMMARY

TEST PIT ID INFILTRATION

TEST ID

TEST ELEV

(FT)

LIMITING

ZONE

ELEV.

(FT)

MEASURED

INFIL. RATE

(IN/HR)

DESIGN INFIL.

RATE (IN/HR)

TP-1 TP-1.1 568.30 567.10 0.00 0.00

TP-1 TP-1.2 568.30 567.10 2.00 0.00

TP-1 TP-1.3 567.80 567.10 18.00 0.00

TP-1 TP-1.4 567.80 567.10 19.50 0.00

TP-2 TP-2.1 567.70 566.20 0.00 0.00

TP-2 TP-2.2 567.70 566.20 0.00 0.00

TP-3 TP-3.1 541.50 539.50 6.00 4.70

TP-3 TP-3.2 541.50 539.50 6.00 4.70

TP-4 TP-4.1 540.70 539.20 3.00 4.70

TP-4 TP-4.2 540.70 539.20 4.50 4.70

TP-5 TP-5.1 417.70 NA 0.25 0.25

TP-5 TP-5.2 417.70 NA 0.25 0.25

TP-6 TP-6.1 416.50 NA 3.00 0.25

TP-6 TP-6.2 416.50 NA 7.50 0.25

Engineering & Design

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-0

REV DATE DESCRIPTION

DRAWING NUMBER:

SHEET NAME:

Colliers Engineering & Design.

NOTE: DO NOT SCALE DRAWINGS FOR CONSTRUCTION.

Phone:

www.colliersengineering.com

SCALE:

DATE ISSUED:

REVIEWED BY:

PROJECT NUMBER:

DRAWN BY:

C O N S U L T I N GENGINEERS + SURVEYING

BATH BOROUGH

STORMWATER

AUTHORITY

BBSA POLLUTION

REDUCTION PLAN

SPYGLASS HILL ROAD AND

BROAD STREET

BOROUGH OF BATH

NORTHAMPTON COUNTY

PENNSYLVANIA

AS SHOWN

11/21/2025

MRC

MRC DFW

BBSA0002

OF 12

1 12/19/25 REVISED PER COMMENTS FROM MEETING

WITH BATH BOROUGH.

2 01/07/26 REVISED TO INCLUDE FENCE REPLACEMENT

AND DETAILS.

LEHIGH VALLEY

1110 American Parkway, Building 10, Suite F-200B Allentown, PA 18109

610.868.4201

COLLIERS ENGINEERING & DESIGN, INC. DOING

BUSINESS AS MASER CONSULTING

CONSTRUCTION PLANS

N O

RTH

1. TREES/VEGETATION TO BE REMOVED AS NECESSARY FOR EXCAVATION

2. REMOVE EXISTING ACCESS GATE AND CHAIN LINK FENCE IN ITS ENTIRETY.

EXISTING CONDITIONS SHEET KEYNOTES

N O

RTH

20 20 40

SCALE : 1" = 20'

0 BASIN 1 EXISTING

CONDITIONS &

DEMO PLAN - SHEET 1

C-102

GENERAL EXISTING CONDITIONS NOTES

A. REFER TO SHEET C-002 FOR GENERAL EXISTING CONDITIONS LEGEND AND NOTES.

S P Y G L A S S H I L L

R O A D

LOD

LODLOD

LOD

LODLO

LOD

LOD LOD

LODLOD

LOD

LODLO

DLOD

LOD

SOIL LEGEND

SOIL NAME MAP UNIT SYMBOL HYDROLOGIC SOIL

GROUP

URBAN LAND-UDORTHENTS, SHALE AND

SANDSTONE COMPLEX, 8 TO 25

PERCENT SLOPES

UusD C (ASSUMED)

WEIKERT-BERKS COMPLEX, 15 TO 25

PERCENT SLOPES WkD D

INFILTRATION TESTING SUMMARY

TEST PIT ID INFILTRATION

TEST ID

TEST ELEV

(FT)

LIMITING

ZONE

ELEV.

(FT)

MEASURED

INFIL. RATE

(IN/HR)

DESIGN INFIL.

RATE (IN/HR)

TP-1 TP-1.1 568.30 567.10 0.00 0.00

TP-1 TP-1.2 568.30 567.10 2.00 0.00

TP-1 TP-1.3 567.80 567.10 18.00 0.00

TP-1 TP-1.4 567.80 567.10 19.50 0.00

TP-2 TP-2.1 567.70 566.20 0.00 0.00

TP-2 TP-2.2 567.70 566.20 0.00 0.00

TP-3 TP-3.1 541.50 539.50 6.00 4.70

TP-3 TP-3.2 541.50 539.50 6.00 4.70

TP-4 TP-4.1 540.70 539.20 3.00 4.70

TP-4 TP-4.2 540.70 539.20 4.50 4.70

TP-5 TP-5.1 417.70 NA 0.25 0.25

TP-5 TP-5.2 417.70 NA 0.25 0.25

TP-6 TP-6.1 416.50 NA 3.00 0.25

TP-6 TP-6.2 416.50 NA 7.50 0.25

Engineering & Design

\C iv il

3D P ro je ct s\

\E ng in ee ri ng \P la n

Se ts

\D ev el op m en t P la ns \C

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N .d w g\

G C

O N

C-

o n

-0

REV DATE DESCRIPTION

DRAWING NUMBER:

SHEET NAME:

Colliers Engineering & Design.

NOTE: DO NOT SCALE DRAWINGS FOR CONSTRUCTION.

Phone:

www.colliersengineering.com

SCALE:

DATE ISSUED:

REVIEWED BY:

PROJECT NUMBER:

DRAWN BY:

C O N S U L T I N GENGINEERS + SURVEYING

BATH BOROUGH

STORMWATER

AUTHORITY

BBSA POLLUTION

REDUCTION PLAN

SPYGLASS HILL ROAD AND

BROAD STREET

BOROUGH OF BATH

NORTHAMPTON COUNTY

PENNSYLVANIA

AS SHOWN

11/21/2025

MRC

MRC DFW

BBSA0002

OF 12

1 12/19/25 REVISED PER COMMENTS FROM MEETING

WITH BATH BOROUGH.

2 01/07/26 REVISED TO INCLUDE FENCE REPLACEMENT

AND DETAILS.

LEHIGH VALLEY

1110 American Parkway, Building 10, Suite F-200B Allentown, PA 18109

610.868.4201

COLLIERS ENGINEERING & DESIGN, INC. DOING

BUSINESS AS MASER CONSULTING

CONSTRUCTION PLANS

N O

RTH

N O

RTH

20 20 40

SCALE : 1" = 20'

0 BASIN 2 EXISTING

CONDITIONS & DEMO

PLAN - SHEET 2

C-103

1. TREES/VEGETATION TO BE REMOVED AS NECESSARY FOR EXCAVATION.

2. REMOVE EXISTING ACCESS GATE AND CHAIN LINK FENCE IN ITS ENTIRETY.

3. EXISTING SHED TO BE RELOCATED.

4. CLEAR AND GRUB TREES/VEGETATION AS NECESSARY TO RESTORE EASEMENT.

EXISTING CONDITIONS SHEET KEYNOTES

LOD

SOIL LEGEND

SOIL NAME MAP UNIT SYMBOL HYDROLOGIC SOIL

GROUP

CLARKSBURG SILT LOAM, 0 TO 3

PERCENT SLOPES ClA C

URBAN LAND-DUFFIELD COMPLEX, 0 TO

8 PERCENT SLOPES UoB C (ASSUMED)

INFILTRATION TESTING SUMMARY

TEST PIT ID INFILTRATION

TEST ID

TEST ELEV

(FT)

LIMITING

ZONE

ELEV.

(FT)

MEASURED

INFIL. RATE

(IN/HR)

DESIGN INFIL.

RATE (IN/HR)

TP-1 TP-1.1 568.30 567.10 0.00 0.00

TP-1 TP-1.2 568.30 567.10 2.00 0.00

TP-1 TP-1.3 567.80 567.10 18.00 0.00

TP-1 TP-1.4 567.80 567.10 19.50 0.00

TP-2 TP-2.1 567.70 566.20 0.00 0.00

TP-2 TP-2.2 567.70 566.20 0.00 0.00

TP-3 TP-3.1 541.50 539.50 6.00 4.70

TP-3 TP-3.2 541.50 539.50 6.00 4.70

TP-4 TP-4.1 540.70 539.20 3.00 4.70

TP-4 TP-4.2 540.70 539.20 4.50 4.70

TP-5 TP-5.1 417.70 NA 0.25 0.25

TP-5 TP-5.2 417.70 NA 0.25 0.25

TP-6 TP-6.1 416.50 NA 3.00 0.25

TP-6 TP-6.2 416.50 NA 7.50 0.25

Engineering & Design

\C iv il

3D P ro je ct s\

\E ng in ee ri ng \P la n

Se ts

\D ev el op m en t P la ns \C

-E

N .d w g\

G C

O N

C-

.C H

o n

-0 1-

REV DATE DESCRIPTION

DRAWING NUMBER:

SHEET NAME:

Colliers Engineering & Design.

NOTE: DO NOT SCALE DRAWINGS FOR CONSTRUCTION.

Phone:

www.colliersengineering.com

SCALE:

DATE ISSUED:

REVIEWED BY:

PROJECT NUMBER:

DRAWN BY:

C O N S U L T I N GENGINEERS + SURVEYING

BATH BOROUGH

STORMWATER

AUTHORITY

BBSA POLLUTION

REDUCTION PLAN

SPYGLASS HILL ROAD AND

BROAD STREET

BOROUGH OF BATH

NORTHAMPTON COUNTY

PENNSYLVANIA

AS SHOWN

11/21/2025

MRC

MRC DFW

BBSA0002

OF 12

1 12/19/25 REVISED PER COMMENTS FROM MEETING

WITH BATH BOROUGH.

2 01/07/26 REVISED TO INCLUDE FENCE REPLACEMENT

AND DETAILS.

LEHIGH VALLEY

1110 American Parkway, Building 10, Suite F-200B Allentown, PA 18109

610.868.4201

COLLIERS ENGINEERING & DESIGN, INC. DOING

BUSINESS AS MASER CONSULTING

CONSTRUCTION PLANS

N O

RTH

N O

RTH

20 20 40

SCALE : 1" = 20'

RAIN GARDEN EXISTING

CONDITIONS PLAN - SHEET 3

C-104

NG S

35.5'

BASIN BOTTOM: 569.00

X X

LOD

LOD LOD

LOD

INFILTRATION TESTING SUMMARY

TEST PIT ID INFILTRATION

TEST ID

TEST ELEV

(FT)

LIMITING

ZONE

ELEV.

(FT)

MEASURED

INFIL. RATE

(IN/HR)

DESIGN INFIL.

RATE (IN/HR)

TP-1 TP-1.1 568.30 567.10 0.00 0.00

TP-1 TP-1.2 568.30 567.10 2.00 0.00

TP-1 TP-1.3 567.80 567.10 18.00 0.00

TP-1 TP-1.4 567.80 567.10 19.50 0.00

TP-2 TP-2.1 567.70 566.20 0.00 0.00

TP-2 TP-2.2 567.70 566.20 0.00 0.00

TP-3 TP-3.1 541.50 539.50 6.00 4.70

TP-3 TP-3.2 541.50 539.50 6.00 4.70

TP-4 TP-4.1 540.70 539.20 3.00 4.70

TP-4 TP-4.2 540.70 539.20 4.50 4.70

TP-5 TP-5.1 417.70 NA 0.25 0.25

TP-5 TP-5.2 417.70 NA 0.25 0.25

TP-6 TP-6.1 416.50 NA 3.00 0.25

TP-6 TP-6.2 416.50 NA 7.50 0.25

Engineering & Design

\C iv il

3D P ro je ct s\

\E ng in ee ri ng \P la n

Se ts

\D ev el op m en t P la ns \C

-G

D .d w g\

C-

o n

-0

REV DATE DESCRIPTION

DRAWING NUMBER:

SHEET NAME:

Colliers Engineering & Design.

NOTE: DO NOT SCALE DRAWINGS FOR CONSTRUCTION.

Phone:

www.colliersengineering.com

SCALE:

DATE ISSUED:

REVIEWED BY:

PROJECT NUMBER:

DRAWN BY:

C O N S U L T I N GENGINEERS + SURVEYING

BATH BOROUGH

STORMWATER

AUTHORITY

BBSA POLLUTION

REDUCTION PLAN

SPYGLASS HILL ROAD AND

BROAD STREET

BOROUGH OF BATH

NORTHAMPTON COUNTY

PENNSYLVANIA

AS SHOWN

11/21/2025

MRC

MRC DFW

BBSA0002

OF 12

1 12/19/25 REVISED PER COMMENTS FROM MEETING

WITH BATH BOROUGH.

2 01/07/26 REVISED TO INCLUDE FENCE REPLACEMENT

AND DETAILS.

LEHIGH VALLEY

1110 American Parkway, Building 10, Suite F-200B Allentown, PA 18109

610.868.4201

COLLIERS ENGINEERING & DESIGN, INC. DOING

BUSINESS AS MASER CONSULTING

CONSTRUCTION PLANS

N O

RTH

20 20 40

SCALE : 1" = 20'

GENERAL GRADING & DRAINAGE NOTES

A. REFER TO SHEET C-002 FOR GENERAL CIVIL LEGEND AND NOTES.

B. REFER TO SHEETS C-521 FOR GRADING AND DRAINAGE DETAILS. REFER TO SHEET C-702 FORE&S DETAILS.

C. NO FIELD CHANGES OR DEVIATIONS FROM THE DESIGN SHALL BE MADE WITHOUT PRIOR APPROVAL FROM

THE ENGINEER AND THE MUNICIPALITY.

1. EXISTING 12" ORIFICE TO REMAIN AT EXISTING ELEVATION. REMOVE ALL SEDIMENT AND DEBRIS FROM OUTLET CONTROL STRUCTURE. CAULK DIVISION BETWEEN UPPER AND LOWER STRUCTURE. COVER EXISTING

BOTTOM ORIFICE WITH BOLTED STEEL PLATE.

2. EXCAVATE TO STRATUM B - DARK GRAYISH BROWN SANDY LOAM. MINIMUM EXCAVATION OF 16". REFER TO

INFILTRATION BASIN 1 DETAIL ON SHEET C-521.

3. INSTALL ENGINEERED SOIL MEDIA AS DEPICTED AND SEED WITH ERNST SEED MIX 127 OR APPROVED EQUAL.

REFER TO INFILTRATION BASIN 1 DETAIL ON SHEET C-521. REFER TO SEEDING SPECIFICATIONS ON SHEET C-521.

4. FILTER BAG INLET PROTECTION. REFER TO DETAIL ON SHEET C-702.

5. 15' WIDE ROCK CONSTRUCTION ENTRANCE. REFER TO SHEET C-702.

6. ORANGE CONSTRUCTION FENCING. REFER TOP DETAIL ON SHEET C-702.

7. INSTALL 6' CHAIN LINK FENCE AND DOUBLE SWING ACCESS GATE. REFER TO DETAIL ON SHEET C-511.

8. EXISTING VEGETATION TO BE TRIMMED AND/OR REMOVED AS MINIMAL AS NECESSARY TO COMPLETE

CONSTRUCTION.

9. 30' X 30' TEMPORARY CONSTRUCTION STAGING/LAYDOWN AREA.

10. 1' STONE FOREBAY. REFER TO DETAIL ON SHEET C-702.

GRADING & DRAINAGE SHEET KEYNOTES

BASIN 1 GRADING &

DRAINAGE PLAN - SHEET 1

C-121

PROPOSED TREELINE

G 570.00

PROPOSED CONTOURS

GROUND SPOT ELEVATION

GRADING AND DRAINAGE

LEGEND

EXISTING CONTOURS

PROPOSED ENGINEERED

SOIL MEDIA AREA

EXISTING OUTLET

CONTROL STRUCTURE

EXISTING STORM PIPE

LOD

STONE

FILTER BAG INLET PROTECTION

LIMIT OF DISTURBANCE:

0.91 AC

CONSTRUCTION FENCING

X XPROPOSED 6' CHAIN LINK

FENCE

S P Y G L A S S H I L L

R O A D

EXISTING SPILLWAY

CFS

CFS CFS

CFS

CFS CFS CFS CFS

CFSCFS CFS

TYP

LODLOD

44.8'

X X

X X X

LOD

LODLOD

LOD

LODLO

LOD

LOD LOD

LODLODLOD

LOD

LODLO

DLOD

LOD

INFILTRATION TESTING SUMMARY

TEST PIT ID INFILTRATION

TEST ID

TEST ELEV

(FT)

LIMITING

ZONE

ELEV.

(FT)

MEASURED

INFIL. RATE

(IN/HR)

DESIGN INFIL.

RATE (IN/HR)

TP-1 TP-1.1 568.30 567.10 0.00 0.00

TP-1 TP-1.2 568.30 567.10 2.00 0.00

TP-1 TP-1.3 567.80 567.10 18.00 0.00

TP-1 TP-1.4 567.80 567.10 19.50 0.00

TP-2 TP-2.1 567.70 566.20 0.00 0.00

TP-2 TP-2.2 567.70 566.20 0.00 0.00

TP-3 TP-3.1 541.50 539.50 6.00 4.70

TP-3 TP-3.2 541.50 539.50 6.00 4.70

TP-4 TP-4.1 540.70 539.20 3.00 4.70

TP-4 TP-4.2 540.70 539.20 4.50 4.70

TP-5 TP-5.1 417.70 NA 0.25 0.25

TP-5 TP-5.2 417.70 NA 0.25 0.25

TP-6 TP-6.1 416.50 NA 3.00 0.25

TP-6 TP-6.2 416.50 NA 7.50 0.25

Engineering & Design

\C iv il

3D P ro je ct s\

\E ng in ee ri ng \P la n

Se ts

\D ev el op m en t P la ns \C

-G

D .d w g\

C-

o n

-0

REV DATE DESCRIPTION

DRAWING NUMBER:

SHEET NAME:

Colliers Engineering & Design.

NOTE: DO NOT SCALE DRAWINGS FOR CONSTRUCTION.

Phone:

www.colliersengineering.com

SCALE:

DATE ISSUED:

REVIEWED BY:

PROJECT NUMBER:

DRAWN BY:

C O N S U L T I N GENGINEERS + SURVEYING

BATH BOROUGH

STORMWATER

AUTHORITY

BBSA POLLUTION

REDUCTION PLAN

SPYGLASS HILL ROAD AND

BROAD STREET

BOROUGH OF BATH

NORTHAMPTON COUNTY

PENNSYLVANIA

AS SHOWN

11/21/2025

MRC

MRC DFW

BBSA0002

OF 12

1 12/19/25 REVISED PER COMMENTS FROM MEETING

WITH BATH BOROUGH.

LEHIGH VALLEY

1110 American Parkway, Building 10, Suite F-200B Allentown, PA 18109

610.868.4201

COLLIERS ENGINEERING & DESIGN, INC. DOING

BUSINESS AS MASER CONSULTING

CONSTRUCTION PLANS

N O

RTH

20 20 40

SCALE : 1" = 20'

0 BASIN 2 GRADING &

DRAINAGE PLAN - SHEET 2

C-122

GENERAL GRADING & DRAINAGE NOTES

A. REFER TO SHEET C-002 FOR GENERAL CIVIL LEGEND AND NOTES.

B. REFER TO SHEETS C-521 AND C-522 FOR GRADING AND DRAINAGE DETAILS.

C. NO FIELD CHANGES OR DEVIATIONS FROM THE DESIGN SHALL BE MADE WITHOUT PRIOR APPROVAL FROM

THE ENGINEER AND THE MUNICIPALITY.

1. EXISTING 6" ORIFICE TO REMAIN AT EXISTING ELEVATION. REMOVE ALL SEDIMENT AND DEBRIS FROM OUTLET CONTROL STRUCTURE. CAULK DIVISION BETWEEN UPPER AND LOWER STRUCTURE. COVER EXISTING BOTTOM

ORIFICE WITH BOLTED STEEL PLATE.

2. EXCAVATE TO STRATUM B - DARK GRAY SANDY LOAM. MINIMUM EXCAVATION OF 16". REFER TO INFILTRATION

BASIN 2 DETAIL ON SHEET C-521.

3. INSTALL ENGINEERED SOIL MEDIA AS DEPICTED (RETURN TO EXISTING GRADE) AND SEED WITH ERNST SEED MIX 127 OR APPROVED EQUAL. REFER TO INFILTRATION BASIN 2 DETAIL ON SHEET C-521. REFER TO SEEDING

SPECIFICATIONS ON SHEET C-521.

4. 4' X 8', 0.72" THICK HDPE ALTURNA GROUND PROTECTIVE MAT OR APPROVED EQUAL. REFER TO SHEET C-702

FOR DETAIL.

5. ORANGE CONSTRUCTION FENCING. REFER TO DETAIL ON SHEET C-702.

6. FILTER BAG INLET PROTECTION. REFER TO DETAIL ON SHEET C-702.

7. 12" COMPOST FILTER SOCK. REFER TO DETAIL ON SHEET C-702.

8. 15' WIDE ROCK CONSTRUCTION ENTRANCE. REFER TO DETAIL ON SHEET C-702.

9. INSTALL 6' CHAIN LINK FENCE AND DOUBLE SWING ACCESS GATE. REFER TO DETAIL ON SHEET C-511.

10. EXISTING VEGETATION TO BE TRIMMED/REMOVED AS MINIMAL AS NECESSARY FOR THE COMPLETION OF

CONSTRUCTION. ANY SHRUBBERY OR TREES THAT ARE REMOVED SHALL BE REPLACED IN KIND.

11. 30' X 30' TEMPORARY CONSTRUCTION STAGING/LAYDOWN AREA.

12. 1' STONE FOREBAY. REFER TO DETAIL ON SHEET C-702.

13. RELOCATED PRIVATE SHED.

GRADING & DRAINAGE SHEET KEYNOTES

PROPOSED TREELINE

G 570.00

PROPOSED CONTOURS

GROUND SPOT ELEVATION

GRADING AND DRAINAGE

LEGEND

EXISTING CONTOURS

PROPOSED ENGINEERED

SOIL MEDIA AREA

EXISTING OUTLET

CONTROL STRUCTURE

EXISTING STORM PIPE

LOD

STONE

FILTER BAG INLET PROTECTION

LIMIT OF DISTURBANCE:

0.66 AC

CFSCOMPOST FILTER SOCK

UTILITY EASEMENT

BOUNDARY

CONSTRUCTION FENCING

X XPROPOSED 6' CHAIN LINK

FENCE

CFS CFS CFS CFS CFS CFS CFS CFS CFS CFS CFS CFS CFS CFS CFS CFS

LOD

X X

XXXXXXXXXXXXXXXXXX

X X

50'

G 421.00

SPILLWAY EL: 421.50

TOP OF BERM: 422.00

INFILTRATION TESTING SUMMARY

TEST PIT ID INFILTRATION

TEST ID

TEST ELEV

(FT)

LIMITING

ZONE

ELEV.

(FT)

MEASURED

INFIL. RATE

(IN/HR)

DESIGN INFIL.

RATE (IN/HR)

TP-1 TP-1.1 568.30 567.10 0.00 0.00

TP-1 TP-1.2 568.30 567.10 2.00 0.00

TP-1 TP-1.3 567.80 567.10 18.00 0.00

TP-1 TP-1.4 567.80 567.10 19.50 0.00

TP-2 TP-2.1 567.70 566.20 0.00 0.00

TP-2 TP-2.2 567.70 566.20 0.00 0.00

TP-3 TP-3.1 541.50 539.50 6.00 4.70

TP-3 TP-3.2 541.50 539.50 6.00 4.70

TP-4 TP-4.1 540.70 539.20 3.00 4.70

TP-4 TP-4.2 540.70 539.20 4.50 4.70

TP-5 TP-5.1 417.70 NA 0.25 0.25

TP-5 TP-5.2 417.70 NA 0.25 0.25

TP-6 TP-6.1 416.50 NA 3.00 0.25

TP-6 TP-6.2 416.50 NA 7.50 0.25

Engineering & Design

\C iv il

3D P ro je ct s\

\E ng in ee ri ng \P la n

Se ts

\D ev el op m en t P la ns \C

-G

D .d w g\

C-

o n

-0

REV DATE DESCRIPTION

DRAWING NUMBER:

SHEET NAME:

Colliers Engineering & Design.

NOTE: DO NOT SCALE DRAWINGS FOR CONSTRUCTION.

Phone:

www.colliersengineering.com

SCALE:

DATE ISSUED:

REVIEWED BY:

PROJECT NUMBER:

DRAWN BY:

C O N S U L T I N GENGINEERS + SURVEYING

BATH BOROUGH

STORMWATER

AUTHORITY

BBSA POLLUTION

REDUCTION PLAN

SPYGLASS HILL ROAD AND

BROAD STREET

BOROUGH OF BATH

NORTHAMPTON COUNTY

PENNSYLVANIA

AS SHOWN

11/21/2025

MRC

MRC DFW

BBSA0002

OF 12

1 12/19/25 REVISED PER COMMENTS FROM MEETING

WITH BATH BOROUGH.

2 01/07/26 REVISED TO INCLUDE FENCE REPLACEMENT

AND DETAILS.

LEHIGH VALLEY

1110 American Parkway, Building 10, Suite F-200B Allentown, PA 18109

610.868.4201

COLLIERS ENGINEERING & DESIGN, INC. DOING

BUSINESS AS MASER CONSULTING

CONSTRUCTION PLANS

N O

RTH

20 20 40

SCALE : 1" = 20'

0 RAIN GARDEN GRADING &

DRAINAGE PLAN - SHEET 3

C-123

GENERAL GRADING & DRAINAGE NOTES

A. REFER TO SHEET C-002 FOR GENERAL CIVIL LEGEND AND NOTES.

B. REFER TO SHEETS C-521 AND C-522 FOR GRADING AND DRAINAGE DETAILS.

C. NO FIELD CHANGES OR DEVIATIONS FROM THE DESIGN SHALL BE MADE WITHOUT PRIOR APPROVAL FROM

THE ENGINEER AND THE MUNICIPALITY.

1. EXISTING HEADWALL TO REMAIN AT EXISTING OUTLET ELEVATION.

2. INSTALL ENGINEERED SOIL MEDIA AS DEPICTED, SEED WITH ERNST SEED MIX-180 OR APPROVED EQUAL

REFER TO SEEDING SPECIFICATIONS ON SHEET C-521. REFER TO SOIL MEDIA DETAIL ON SHEET C-521.

3. 12" COMPOST FILTER SOCK. REFER TO DETAIL ON SHEET C-702.

4. 15' ROCK CONSTRUCTION ENTRANCE. REFER TO DETAIL; ON SHEET C-702.

5. ORANGE CONSTRUCTION FENCING. REFER TO DETAIL ON SHEET C-702.

6. FILTER BAG INLET PROTECTION. REFER TO DETAIL ON SHEET C-702.

7. 30' X 30' TEMPORARY CONSTRUCTION STAGING/LAYDOWN AREA.

8. 1' STONE FOREBAY. REFER TO DETAIL ON SHEET C-702.

GRADING & DRAINAGE SHEET KEYNOTES

G 570.00

PROPOSED CONTOURS

GROUND SPOT ELEVATION

GRADING AND DRAINAGE

LEGEND

EXISTING CONTOURS

PROPOSED ENGINEERED

SOIL MEDIA

AND PLUG PLANTINGS

EXISTING 'M' INLET

EXISTING STORM PIPE

EXISTING HEADWALL

STORMWATER EASEMENT

BOUNDARY

LODLIMIT OF DISTURBANCE:

0.42 AC

CFSCOMPOST FILTER SOCK

LINE POST CAP

FABRIC FLUSH WITH

UPPER RAIL

TOP RAIL 1 5/8" O.D.

GALVANIZED STEEL

POST CAP

2 3/8" O.D.

CORNER/END

POST

TENSION BAR:

1"x1/8" WITH 1/4"

CARRIAGE BOLT

TENSION BAR:

1/4"x3/4"

BOTTOM RAIL 1-5/8" O.D.

GALVANIZED STEEL

GREEN VINYL-COATED

STEEL MESHGRADE

FABRIC

SELVAGE

1-7/8" O.D. LINE POST

10'-0" MAX. SPACING 6" MIN.

6' HIGH CHAIN LINK FENCE DETAIL

NOTES:

1. WIRE MESH SHALL BE 2" MESH, 9 GAUGE VINYL COATED STEEL CHAIN LINK FABRIC, WITH KNUCKLED SELVAGE (KK) ON BOTH TOP AND BOTTOM.

2. FENCE FRAMEWORK RAIL AND POST SHALL BE ASTM GROUP 1A, HOT DIP GALVANIZED STEEL PIPE, 16 GAUGE, CLASS 1 ZINC COATED, REGULAR STRENGTH GRADE ASTM 1083, 30,000 PSI

YIELD STEEL SCHEDULE 40 ROUND PIPE.

3. BAR LENGTH AND POST HEIGHT ABOVE GRADE PER FENCE HEIGHT AND MANUFACTURER'S SPECIFICATIONS.

4. COLOR OF THE WIRE MESH TO BE GREEN UNLESS OTHERWISE SPECIFIED ON THE PLANS.

5. END AND CORNER POST TOP SHALL BE DOME SHAPE.

6. FOOTING WIDTH TO BE (4) X POST WIDTH, MINIMUM DEPTH 36", CLASS "A" PSI CONCRETE.

CLASS "A" CONCRETE FOOTING

36" MIN.

CL DOUBLE GATE TYPICAL TERMINAL

SECTION

STRETCHER BAR

6-5/8" O.D. GATE POST

(TYP. BOTH SIDES)

PLUNGER CATCH

CATCH AND LATCH

PLUNGER BAR

GATE HINGE

6" MIN.

CHAIN LINK FENCE DOUBLE GATE DETAIL

NOTES:

1. WIRE MESH SHALL BE 2" MESH, 9 GAUGE VINYL COATED STEEL CHAIN LINK FABRIC, WITH KNUCKLED SELVAGE (KK) ON BOTH TOP AND BOTTOM.

2. FENCE FRAMEWORK RAIL AND POST SHALL BE ASTM GROUP 1A, HOT DIP GALVANIZED STEEL PIPE, 16 GAUGE, CLASS 1 ZINC COATED, REGULAR STRENGTH GRADE ASTM 1083, 30,000 PSI YIELD STEEL SCHEDULE 40 ROUND PIPE.

3. BAR LENGTH AND POST HEIGHT ABOVE GRADE PER FENCE HEIGHT AND MANUFACTURER'S SPECIFICATIONS. FENCE HEIGHT AS SPECIFIED ON THE PLAN.

4. COLOR OF THE WIRE MESH TO BE GREEN UNLESS OTHERWISE SPECIFIED ON THE PLANS

5. END AND CORNER POST TOP SHALL BE DOME SHAPE.

6. FOOTING WIDTH TO BE (4) X POST WIDTH, MINIMUM DEPTH 36", CLASS "A" CONCRETE.

7. MESH TYPE & COLOR TO MATCH FENCE.

CLASS "A"

CONCRETE FOOTING

36" MIN.

10/01/24MCCM-SITE-FNCE-1202

6' MAX.

NOT TO SCALE

10/01/24MCCM-SITE-FNCE-1301

NOT TO SCALE

Engineering & Design

\C iv il

3D P ro je ct s\

\E ng in ee ri ng \P la n

Se ts

\D ev el op m en t P la ns \C

-D

dw g\

-5

o n

-0

REV DATE DESCRIPTION

DRAWING NUMBER:

SHEET NAME:

Colliers Engineering & Design.

NOTE: DO NOT SCALE DRAWINGS FOR CONSTRUCTION.

Phone:

www.colliersengineering.com

SCALE:

DATE ISSUED:

REVIEWED BY:

PROJECT NUMBER:

DRAWN BY:

C O N S U L T I N GENGINEERS + SURVEYING

BATH BOROUGH

STORMWATER

AUTHORITY

BBSA POLLUTION

REDUCTION PLAN

SPYGLASS HILL ROAD AND

BROAD STREET

BOROUGH OF BATH

NORTHAMPTON COUNTY

PENNSYLVANIA

AS SHOWN

11/21/2025

MRC

MRC DFW

BBSA0002

OF 12

1 12/19/25 REVISED PER COMMENTS FROM MEETING

WITH BATH BOROUGH.

2 01/07/26 REVISED TO INCLUDE FENCE REPLACEMENT

AND DETAILS.

LEHIGH VALLEY

1110 American Parkway, Building 10, Suite F-200B Allentown, PA 18109

610.868.4201

COLLIERS ENGINEERING & DESIGN, INC. DOING

BUSINESS AS MASER CONSULTING

CONSTRUCTION PLANS

SITE DETAILS

C-511

UNCOMPACTED PERMEABLE

SUBGRADE

REMOVE HYDRAULICALLY RESTRICTIVE

MATERIAL TO MINIMUM 1.5' DEPTH

EMERGENCY SPILLWAY

EL: 421.50 (SEE DETAIL)

10' WIDE BERM EL: 422.00

EXISTING TOP OF BERM

EL: 577.00' (VARIES)

APPROX. DEPTH OF DARK

GRAYISH BROWN SANDY LOAM

(STRATUM B)

APPROX. DEPTH OF BROWNISH

YELLOW SANDY LOAM

(FILL 1)

APPROX. DEPTH OF VERY DARK

GRAYISH BROWN SILTY LOAM

(TOPSOIL)

8" 16"

16" MIN

EXISTING SPILLWAY

EL: 576.03' (VARIES)

EXISTING TOP OF GRATE

EL:= 575.03

BASIN BOTTOM

EL: 569.00

EXISTING 12" ORIFICE

INV. EL:= 570.03

EXISTING GRADE (TYP)

INV. EL: 566.73'

EXISTING 18" CPP

CAULK BOTTOM OF INLET STRUCTURE

INFILTRATION BASIN 1 DETAIL

CONSTRUCTION GUIDELINES AND NOTES

1. THE CONTRACTOR SHALL NOTIFY THE ENGINEER IMMEDIATELY IF SOIL CONDITIONS ENCOUNTERED IN THE

FIELD DIFFER FROM WHAT IS SHOWN HEREON. SUCH CONDITIONS COULD RENDER THE DESIGN HEREON

INAPPROPRIATE OR INEFFECTIVE.

2. AREAS FOR PROPOSED SOIL MEDIA BACKFILL SHALL BE CLEARLY MARKED WITH SILT FENCING BEFORE ANY SITE WORK BEGINS TO AVOID SOIL DISTURBANCE AND COMPACTION DURING CONSTRUCTION. IF AREAS ARE

COMPACTED DURING CONSTRUCTION ADDITIONAL INFILTRATION TESTING WILL BE REQUIRED.

3. COMPLETE SITE ELEVATION GRADING AND STABILIZE THE SOIL DISTURBED WITHIN THE LIMIT OF

DISTURBANCE.

4. HEAVY DUTY EQUIPMENT IS NOT ALLOWED WITHIN THE LIMITS OF THE INFILTRATION BASIN TO AVOID

COMPACTION.

5. EXCAVATION OF THE INFILTRATION BASIN SHOULD BE COMPLETED FROM THE PERIMETER OF THE PROPOSED SCM WHERE POSSIBLE. WHERE THE EXCAVATION CANNOT BE COMPLETED FROM THE PERIMETER OF THE BMP, BULK EARTHWORK CAN BE COMPLETED TO AN ELEVATION WHICH IS ONE (1) FOOT ABOVE THE INFILTRATION BASIN BOTTOM ELEVATION. EXCAVATION FROM THIS POINT ON SHOULD BE COMPLETED WITH A LIGHT DUTY MACHINE (BOBCAT OR APPROVED EQUAL) PLACED ON THE AREAS CONTAINING THE ONE (1) FOOT OF MATERIAL. AS THE EXCAVATION OF THE ONE (1) FOOT OF MATERIAL PROCEEDS, THE INFILTRATION SURFACE

SHOULD BE SCARIFIED.

6. THE USE OF LOW GROUND PRESSURE (LGP) MACHINES IS ALLOWED AS LONG AS THE SPECIFICATIONS OF THE

MACHINE ARE VERIFIED AND APPROVED BY THE ENGINEER.

7. THE CONTRACTOR SHALL NOTIFY THE ENGINEER 72 HOURS BEFORE THE PLACEMENT OF THE BOTTOM 16 INCHES OF ENGINEERED SOIL MEDIA. THE BOTTOM 16 INCHES OF ENGINEERED SOIL MEDIA MIX SHOULD BE

SPREAD BY HAND.

8. SEED AND PLANT VEGETATION AS INDICATED ON THE PLANS AND SPECIFICATIONS.

9. WATER VEGETATION AT THE END OF EACH DAY FOR TWO WEEKS AFTER PLANTING IS COMPLETED.

10. WATER VEGETATION REGULARLY DURING FIRST YEAR TO ENSURE SUCCESSFUL ESTABLISHMENT.

INFILTRATION TESTING DURING CONSTRUCTION:

AT THE TIME OF CONSTRUCTION, CONFIRMATION INFILTRATION TESTS SHALL BE PERFORMED AFTER PLACEMENT OF THE SOIL MEDIA LAYER AT A RATE OF 4 - 6 TEST PER ACRE OF SCM AREA, EVENLY DISTRIBUTED. THE FIELD TESTING SHALL BE WITNESSED BY THE BOROUGH ENGINEER. A GEOTECHNICAL ENGINEER MUST BE PRESENT ON SITE. GEOTECHNICAL ENGINEER WILL DIRECT QUANTITY AND LOCATION OF EXPLORATORY TEST PITS.

CONSTRUCTION SEQUENCE

1. EXCAVATE TO STRATUM B - DARK GRAY SANDY LOAM. MINIMUM EXCAVATION OF 16".

2. SCARIFY UNDERLYING SOILS -DARK GRAY SANDY LOAM (STRATUM B) TO A MINIMUM…

This is the start of the file's text. The full file is on GovTribe.

File details come from the government source that posted it. Updated May 12, 2026.