1-2026-01-23 - Conewago Creek Phase 4 Construction Plans.pdf

PDF 16 MB Posted Jan 23, 2026

Attached to: Conewago Creek Phase IV Floodplain Restoration
Solicitation number: Not on record
Issued by: Dauphin County, Milroy CDP, Pennsylvania

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Written by GovTribe AI · Feb 3, 2026

Conewago Creek Phase IV Floodplain Restoration Construction Plans

This document consists of construction plans and specifications for the Conewago Creek Phase IV Floodplain Restoration project in Londonderry Township, spanning Dauphin and Lancaster Counties, Pennsylvania. The project is sponsored by Londonderry Township with oversight by the consulting firm LandStudies Inc. The work involves selective site demolition, surveying, erosion and sediment controls, flow diversion, and removal of accumulated legacy sediment to restore a functional floodplain area. The scope includes installation of log sills, woody debris, and grade control structures to provide stability across the restored system, followed by native riparian buffer plantings. The project encompasses approximately 3.98 acres of wetland area across multiple parcels and extends along Conewago Creek and tributary reaches. Sealed bids for the project were due by 12:00 pm on Monday, February 23, 2026, through PennBid, with bid security required at 10% of the base bid. The contractor shall complete work during low-flow conditions and maintain all erosion and sediment control measures until permanent stabilization of all disturbed areas is achieved. The contract includes multiple inspection milestones throughout construction, including pre-construction meetings, stakeout verification, equipment installation inspections, and final site stabilization approval before the engineer authorizes demobilization.

The construction documents specify detailed technical requirements for floodplain reconstruction, including precise elevation targets based on NAVD 88 vertical datum and PA State Plane NAD 83 (South) coordinate system. The contractor bears responsibility for utility location verification, obtaining necessary permits from the municipality, providing all traffic control and trench barricading, and ensuring proper drainage during operations. Materials specifications include topsoil free of rocks and debris suitable for vegetative establishment, erosion control matting (ROLANKA BIOD-MAT 40 and 90), geotextile fabric, riprap in varying sizes (R-3, R-4, and R-6), and native seed mixes for permanent revegetation. The plans identify existing utilities including overhead electric lines on Route 230 and Hoffer Road, with the contractor required to call Pennsylvania One Call at least three days prior to commencing earth disturbance. Adaptive management strategies may be implemented at the engineer's direction to accommodate site-specific soil and groundwater conditions encountered during construction. All work shall comply with local, state, and federal regulations, permit conditions, and applicable grant requirements, with final project closeout requiring approval from the Dauphin County Conservation District and DEP Central Office.

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0' 2000' 4000' 6000'

SCALE: 1" = 2000'

CONEWAGO CREEK PHASE IV

FLOODPLAIN RESTORATION

CONSTRUCTION DRAWINGS

LONDONDERRY TOWNSHIP, DAUPHIN & LANCASTER COUNTY, PA

SITE MAP

1" = 300'

LOCATION MAP

1" = 2,000'

PROJECT

LOCATION

CLIENT ADDRESS:

LONDONDERRY TOWNSHIP - BRADY BOSWORTH,

MS4 ENVIRONMENTAL SPECIALIST

783 GEYERS CHURCH ROAD

MIDDLETOWN, PA 17057

PHONE: (717) 461-0027

EMAIL: bbosworth@londonderrypa.org

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SCALE: 1" = 300'

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PENNSYLVANIA ONE CALL SYSTEM, INC.

CALL 3 BUSINESS DAYS BEFORE YOU DIG!

1-800-242-1776 OR 8-1-1

POCS SERIAL #20251153214-000

DATE: 04/25/2025

SCALE:

DATE:

CHECKED BY:

DRAWN BY:

PROJECT NUMBER:

SHEET NUMBER:

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SURVEY AND GENERAL PLAN NOTES

1. THE PURPOSE OF THIS PLAN IS TO REMOVE A LEGACY SEDIMENT IMPAIRMENT ALONG THE PROPOSED REACHES OF THE CONEWAGO CREEK AND AN UNNAMED TRIBUTARY TO THE CONEWAGO CREEK IN LONDONDERRY TOWNSHIP, DAUPHIN COUNTY, PA. THIS RESTORATION PLAN AIMS TO RECONSTRUCT THE HISTORICAL FLOODPLAIN TO CONDITIONS THAT RESEMBLE AS CLOSE OF AN APPROXIMATION TO THE PRE-SETTLEMENT CONDITIONS AS IS REASONABLY POSSIBLE GIVEN THE MODERN DAY SITE

CONSTRAINTS.

2. LANDSTUDIES INC. ASSUMES NO LIABILITY FOR USE OR REUSE OF THESE PLANS BY ANY INDIVIDUAL OR ENTITY OTHER THAN LANDSTUDIES' CLIENT: LONDONDERRY

TOWNSHIP.

3. REVISIONS MADE TO THIS PLAN SHALL NOT BE THE RESPONSIBILITY OF LANDSTUDIES INC. REVISIONS, SUBSTITUTION OF MATERIALS, OR OTHER CHANGES REQUIRES WRITTEN PERMISSION FROM LANDSTUDIES AND MAY BE SUBJECT TO GOVERNING BODY APPROVAL. SUCH APPROVAL OF REVISIONS OR FIELD CHANGES SHALL BE THE

RESPONSIBILITY OF THE CONTRACTOR.

4. EXISTING CONDITION SITE FEATURES AND TOPOGRAPHY ARE BASED ON PUBLICLY AVAILABLE UNITED STATES GEOLOGIC SURVEY (USGS) 1-METER RESOLUTION CONTOUR MODELS AND AS-BUILT SURFACE MODELS PROVIDED BY HERBERT, ROWLAND, & GRUBIC FOR THE PREVIOUSLY RESTORED FLOODPLAIN UPSTREAM.

SUPPLEMENTAL STREAM CHANNEL AND FLOODPLAIN TOPOGRAPHY WAS BASED ON FIELD SURVEYS BY LANDSTUDIES INC. CONDUCTED ON APRIL 15 & 16, 2025 USING

CONVENTIONAL SURVEY METHODS (TOTAL STATION).

5. ALL ELEVATIONS ARE BASED ON NAVD 88 VERTICAL DATUM. HORIZONTAL PROJECTIONS ARE BASED ON THE PA STATE PLANE NAD 83 (SOUTH) COORDINATE SYSTEM.

6. A WETLAND DELINEATION WAS CONDUCTED BY LANDSTUDIES INC. ON APRIL 28, 2025. THE RESULTS OF THAT INVESTIGATION INDICATE THE PRESENCE OF WETLANDS WITHIN THE PROJECT AREA. ALL IMPACTED WETLAND AREAS ARE BEING IMPROVED AS A RESULT OF THE FLOODPLAIN RESTORATION.

7. NO KNOWN UNDERGROUND UTILITIES EXIST ON THE PROJECT SITE. OVERHEAD UTILITY LINES ARE PRESENT ON ROUTE 230 AND HOFFER ROAD.

8. IT SHALL BE THE CONTRACTOR'S RESPONSIBILTY TO VERIFY THAT NO UTILITIES EXIST ON SITE PRIOR TO CONSTRUCTION.

9. FLUVIAL SYSTEMS ARE DYNAMIC AND CHANGE OVER TIME. THE EXISTING CONDITIONS TYPOGRAPHY REPRESENTS THE CONDITIONS AT THE TIME OF THE FIELD SURVEY.

DESIGN MODIFICATIONS MAY BE NECESSARY TO ACCOMMODATE CHANGES IN THE SITE CONDITIONS AT THE TIME OF CONSTRUCTION. LANDSTUDIES SHALL BE CONSULTED TO VERIFY THE EXISTING SITE CONDITIONS AND IDENTIFY CONSTRUCTION MODIFICATIONS THAT MAY BE NECESSARY BASED ON THOSE CONDITIONS.

10. EXISTING FLOODPLAIN AND FLOODWAY LINES AS SHOWN ON THESE PLANS WERE OBTAINED FROM FEMA'S NATIONAL FLOOD HAZARD LAYER (NFHL) COUNTY DATA ON 01/06/2025.

11. A COPY OF THE PROJECT SITE'S EROSION AND SEDIMENT POLLUTION CONTROL PLAN AND ITS ACCOMPANYING NARRATIVE MUST BE AVAILABLE ON-SITE DURING CONSTRUCTION UNTIL THE SITE HAS BEEN PERMANENTLY STABILIZED AND FOLLOWING VERIFICATION FROM THE APPLICABLE REGULATORY AUTHORITY.

12. PREDOMINANT SOILS WITHIN THE PROJECT AREA ARE:

12.1. Bc - BASHER SILT LOAM

12.2. Rd - ROWLAND SILT LOAM

12.3. Bo - BOWMANSVILLE SILT LOAM

13. SOILS INFORMATION WAS OBTAINED FROM THE USDA NRCS'S WEB SOIL SURVEY.

14. THE PENNDOT RIGHT OF WAY SHOWN ON THESE PLANS IS APPROXIMATE. THE RIGHT OF WAY WAS DRAFTED BASED ON THE 1968 PLANS PREPARED BY RUMMEL, KLEPPER, & KAHL CONSULTING ENGINEERS TITLED DRAWINGS AUTHORIZING CONDEMNATION OF RIGHT-OF-WAY AND CONSTRUCTION OF LEG. ROUTE 129 SECTION 19 & 18 IN DAUPHIN &

LANCASTER COUNTY.

PROJECT INSPECTION MILESTONES

THE CONTRACTOR IS RESPONSIBLE FOR NOTIFYING THE ENGINEER AT LEAST ONE WEEK PRIOR TO THE ANTICIPATED START OF EACH ACTIVITY SO THAT NECESSARY SITE INSPECTIONS CAN BE MADE AND GUIDANCE PROVIDED. THE ENGINEER MAY REQUIRE ADDITIONAL INSPECTION POINTS OR MULTIPLE INSPECTIONS OF A GIVEN FEATURE THROUGH THE COURSE OF CONSTRUCTION.

1. PRIOR TO CLEARING/ TREES MARKED FOR REMOVAL

2. STAKEOUT

3. E&S CONTROLS

4. CHANNEL BED GRAVEL HARVESTING

5. START OF EXCAVATION

6. START OF ISLAND EXCAVATION

7. FIRST BURIED LOG SILL INSTALLATION - SUBSEQUENT LOG SILL INSTALLATIONS THAT ARE NOT OBSERVED BY THE ENGINEER SHALL

BE FLAGGED OR OTHERWISE IDENTIFIED SO THAT SILL ELEVATIONS MAY BE EASILY CONFIRMED BY PROBING.

8. FIRST 10 WOODY DEBRIS INSTALLATIONS

9. FIRST 10 ROOT WAD INSTALLATIONS

10. ALL ROCK UNDERLAYMENT

11. CONSTRUCTION OF THE PROPOSED PLUNGE POOL (PP-1)

12. ADDITIONAL REVIEW OF FLOODPLAIN, CHANNEL, AND STRUCTURE INSTALLATION AS REQUESTED BY THE ENGINEER

13. PRIOR TO SEEDING AND MATTING (BY SECTION)

14. SEED, LABEL AND WEIGHT (BY SECTION)

15. AFTER SEEDING AND MATTING (BY SECTION)

16. TREE, SHRUB, PLUG MATERIAL ONSITE PRIOR TO AND FOLLOWING PLANTING

17. PRIOR TO DEMOBILIZATION

FLOODPLAIN RESTORATION NOTES

1. FLOODPLAIN RESTORATION REQUIRES DYNAMIC IMPLEMENTATION APPROACHES TO ACHIEVE OPTIMAL RESTORATION CONDITIONS. THE CONTRACTOR PERFORMING THE WORK SHALL HAVE RELATIVE EXPERIENCE WORKING WITH FLUVIAL SYSTEMS ON STREAM AND FLOODPLAIN RESTORATIONS. THE CONTRACTOR SHALL UNDERSTAND THAT VARIATIONS OF SOILS AND GROUNDWATER ELEVATION MAY IMPACT SITE AND SOIL CONDITIONS AND SHALL COORDINATE WITH THE ENGINEER TO IMPLEMENT ADAPTIVE MANAGEMENT STRATEGIES TO HANDLE SITE SPECIFIC CONDITIONS ARISING DURING CONSTRUCTION OR WHICH HAVE CHANGED SINCE THE INITIAL ASSESSMENT AND DATA COLLECTION UPON WHICH THE DESIGN IS BASED. ANY ADAPTIVE MANAGEMENT STRATEGIES THAT MAY BE IMPLEMENTED SHALL BE CONSIDERED INCIDENTAL TO THE RESTORATION CONSTRUCTION. A DETAILED DESCRIPTION OF THESE STRATEGIES MAY BE FOUND IN THE OPERATIONS AND MAINTENANCE PLAN. THESE STRATEGIES SHALL ONLY BE IMPLEMENTED AT THE DIRECTION OF THE ENGINEER. ADAPTIVE MANAGEMENT

STRATEGIES MAY INCLUDE, BUT ARE NOT LIMITED TO, THE FOLLOWING:

a. WOODY DEBRIS OR ROOT WAD PLACEMENT

b. LOG SILLS

c. STRAW BALES, FASCINES, BRUSH BUNDLES, COIR LOGS, WADDLES, AND MATTING ROLLS

d. SOD MAT PLACEMENT

e. ADDITIONAL ROCK UNDERLAYMENT

f. TARGETED MICROTOPOGRAPHY ADJUSTMENTS

g. RE-SEEDING/RE-MATTING

2. MINIMIZING COMPACTION TO THE PROPOSED FLOODPLAIN FOOTPRINT IS A KEY TENET OF CONSTRUCTION INTENDED TO MAINTAIN THE INTEGRITY OF THE RESTORATION. FOR THIS REASON, ALL EXCAVATION WITHIN 18” VERTICALLY OF THE PROPOSED FLOODPLAIN FOOTPRINT SHALL BE CONDUCTED WITH A TRACKHOE WORKING BACKWARDS OFF THE FOOTPRINT TO ACHIEVE FINAL GRADE. PROPOSED BASEFLOW CHANNELS, HABITAT POOLS, LOG SILLS, WOODY DEBRIS, BURIED LOGS, AND OTHER FLOODPLAIN FEATURES SHALL BE CONSTRUCTED IN A SIMILAR MANNER IN CONCURRENCE WITH THE FLOODPLAIN GRADING AND UNDER DIRECT SUPERVISION OF THE ENGINEER. IF CONSTRUCTION TRAFFIC ON THE FLOODPLAIN FOOTPRINT IS NECESSARY TO ACCOMMODATE PORTIONS OF CONSTRUCTION, TRAFFIC SHALL BE LIMITED TO ONE PASS AND EQUIPMENT SHALL BE APPROVED IN ADVANCE BY, AND SUBJECT TO OVERSIGHT OF THE ENGINEER.

3. IT IS ANTICIPATED THAT DIVERSE SOIL TYPES & SUBSURFACE MATERIALS WILL BE ENCOUNTERED DURING CONSTRUCTION. AT THE DIRECTION OF THE ENGINEER, THE CONTRACTOR SHALL SEGREGATE MATERIALS BASED ON OVERALL SCOPE OF WORK AND UTILIZE SOIL TYPES BASED ON MOST SUITABLE APPLICATIONS. (I.E. GRAVEL FOR CHANNEL FEATURES; SUITABLE GROWING MEDIUM AT PROPOSED GRADE).

4. TO THE EXTENT PRACTICAL, WORK SHALL BE PERFORMED DURING LOW-FLOW CONDITIONS, AVOIDING PERIODS DURING OR

IMMEDIATELY FOLLOWING HEAVY PRECIPITATION.

5. TO THE EXTENT PRACTICAL, NATIVE VEGETATION (FORBS, GRASSES, TREES AND SHRUBS) SHALL BE PRESERVED. NATIVE TREES AND SHRUBS SHALL BE WORKED AROUND AND/OR TRANSPLANTED IF SITE CONDITIONS PERMIT OR GRADING REVISIONS WILL BE WITHIN AN

ACCEPTABLE TOLERANCE. THE ENGINEER SHALL FIELD VERIFY.

6. ONCE FINAL GRADE HAS BEEN ACHIEVED, STABILIZATION SHOULD OCCUR WITHIN 48 HOURS IF CONDITIONS WOULD OTHERWISE RESULT IN SEDIMENT-LADEN RUNOFF LEAVING THE SITE. EXCEPTIONS INCLUDE TIE-INS TO THE EXISTING CHANNEL WHERE FLOW IS BEING MAINTAINED, WHEN RAIN IS FORECASTED, OR PROPOSED CHANNELS WITH ACTIVE BASELFOW. IN THESE INSTANCES, STABILIZATION MUST OCCUR THE SAME DAY IF CONDITIONS WOULD OTHERWISE RESULT IN SEDIMENT-LADEN RUNOFF LEAVING THE SITE.

7. PRIOR TO ANY DISTURBANCE IN AREAS OF THE TRIBUTARY THAT WOULD OTHERWISE BE EXPOSED TO ACTIVE FLOW, FLOW SHALL BE DIVERTED THROUGH IMPLEMENTATION OF A TEMPORARY PUMP-AROUND BYPASS IN ACCORDANCE WITH THE PLANS. THOUGH IT MAY BE NECESSARY DURING INSTALLATION OF BYPASS SYSTEMS OR IN OTHER LIMITED CIRCUMSTANCES, THE CONTRACTOR SHALL MINIMIZE VEHICLE TRAFFIC IN ACTIVE FLOWS. CONSTRUCTION ACTIVITIES OUTSIDE OF THE ACTIVE FLOW MAY BE CONDUCTED WITHOUT USE OF A BYPASS SYSTEM IF THE ACTIVITIES ARE CONDUCTED PRIOR TO FINAL CONNECTION WITH ACTIVE STREAM FLOW. ADDITIONAL LOCALIZED PUMPING MAY BE UTILIZED TO DE-WATER IN THE IMMEDIATE VICINITY OF WHERE WORK IS BEING DONE. ALTERNATIVE SOLUTIONS SHALL BE APPROVED BY THE ENGINEER. BYPASS PUMP SHALL PROVIDE CAPACITY TO SUFFICIENTLY CONVEY FLOWS AT THE TIME OF CONSTRUCTION OF THE TRIBUTARY. MULTIPLE PUMPS MAY BE USED IF NECESSARY. AS THE REACHES ARE DEWATERED, FISHES WITHIN THE DEWATERED AREA SHALL BE CAPTURED UTILIZING A SEINE OR OTHER NET, PLACED IN BUCKETS WITH WATER, AND IMMEDIATELY RELOCATED TO ACTIVE CHANNEL

FLOWS OUTSIDE OF THE WORK AREA.

8. THE SIZE, LOCATION AND ORIENTATION OF WOODY DEBRIS, LOG SILLS, ROOT WADS, AND OTHER FLOODPLAIN FEATURES ARE APPROXIMATE AND FINAL LOCATION AND ORIENTATION WILL BE DETERMINED BY THE ENGINEER BASED ON SITE CONDITIONS FOUND DURING CONSTRUCTION. ALL SUITABLE WOODY MATERIAL HARVESTED ON-SITE SHALL BE USED FOR LOG SILLS, WOODY DEBRIS, AND BURIED LOGS.

CONTRACTOR NOTES

1. AT LEAST 7 DAYS PRIOR TO STARTING ANY EARTH DISTURBANCE ACTIVITIES, INCLUDING CLEARING AND GRUBBING, THE OWNER AND/OR OPERATOR SHALL INVITE ALL CONTRACTORS, THE LANDOWNER, APPROPRIATE PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION & UNITED STATES ARMY CORP OF ENGINEERS OFFICIALS, AND THE E&S PLAN PREPARER TO AN

ON-SITE PRE-CONSTRUCTION MEETING.

1.1. THE ORANGE CONSTRUCTION FENCE SHOWN ON THE PLANS MUST BE INSTALLED PRIOR TO THIS MEETING AND INSPECTED BY

ATTENDING PARTIES.

2. AT LEAST 3 DAYS PRIOR TO STARTING ANY EARTH DISTURBANCE ACTIVITIES, OR EXPANDING INTO AN AREA PREVIOUSLY UNMARKED, THE PENNSYLVANIA ONE CALL SYSTEM INC. SHALL BE NOTIFIED AT 1-800-242-1776 FOR THE LOCATION OF EXISTING UNDERGROUND UTILITIES. CONTRACTOR SHALL CALL PA ONE-CALL 3 DAYS PRIOR TO THE START OF CONSTRUCTION.

3. THE CONTRACTOR SHALL SCHEDULE ALL NECESSARY INSPECTIONS WITH THE MUNICIPALITY AND COMPLY WITH ALL REQUESTS AND DIRECTIVES INCLUDING CORRECTING DEFECTIVE WORK AS REQUIRED TO OBTAIN FINAL APPROVAL OF THE WORK AND CLOSING OUT

THE PROJECT.

4. CONTRACTOR SHALL ADHERE TO ALL LOCAL, STATE AND FEDERAL REGULATIONS AND SPECIFICATIONS INCLUDING SAFETY STANDARDS. ALL PERMIT CONDITIONS, AND ANY APPLICABLE GRANT REQUIREMENTS SHOULD THE PROJECT BE FUNDED BY ANY

GRANTS.

5. THE CONTRACTOR IS SOLELY RESPONSIBLE FOR THE CONSTRUCTION MEANS, METHODS, TECHNIQUES, SEQUENCES, PROCEDURES, SAFETY PRECAUTIONS AND/OR PROGRAMS.

6. WORK WITHIN A DOT RIGHT-OF-WAY SHALL REQUIRE DOT APPROVAL AND SHALL BE CONSTRUCTED TO DOT STANDARDS.

7. PRIOR TO CONSTRUCTION, THE CONTRACTOR SHALL VERIFY WITH THE MUNICIPALITY IF CONSTRUCTION IMPROVEMENTS SHALL BE

SUBJECT TO MUNICIPAL IMPROVEMENT CONSTRUCTION MANUAL AND ADHERE TO THE CURRENT STANDARDS IN EFFECT.

8. PRIOR TO CLEARING AND GRUBBING, THE ENGINEER SHALL FLAG TREES NOT SUITABLE FOR INCORPORATION INTO THE

RESTORATION AS WOODY DEBRIS OR GRADE CONTROL STRUCTURES. ANY TREE SEGMENTS GREATER THAN 12” DBH AND 20' LONG SHALL BE STOCKPILED FOR USE AS LOG SILLS. ALL REMAINING ROOT WADS AND WOODY MATERIAL SHALL REMAIN AVAILABLE FOR

INCORPORATION INTO THE FLOODPLAIN.

9. PRODUCTS SPECIFIED ON THESE PLANS SHALL BE INSTALLED IN ACCORDANCE WITH MANUFACTURERS

RECOMMENDATIONS/SPECIFICATIONS UNLESS INDICATED OTHERWISE.

10. CONSTRUCTION OF ALL IMPROVEMENTS SHALL BE BASED ON ACTUAL FIELD STAKING BY A REGISTERED SURVEYOR, UNLESS APPROVED OTHERWISE. THE CONTRACTOR SHALL NOT DEVIATE FROM THE GEOMETRY OR DIMENSIONS INDICATED ON THE PLANS WITHOUT PRIOR APPROVAL FROM THE ENGINEER. IT IS THE CONTRACTOR'S RESPONSIBILITY TO PROVIDE ALL NECESSARY

STAKEOUT AND SURVEY CONTROL. EXISTING SURVEY CONTROL SHALL NOT BE USED.

11. CONTRACTOR SHALL INSPECT THE SITE TO VERIFY THE EXISTING CONDITIONS, DIMENSIONS AND ELEVATIONS PRIOR TO CONSTRUCTION. CONTRACTOR SHALL VERIFY LAYOUT AND DIMENSIONS ON SITE PRIOR TO CONSTRUCTION. ANY DISCREPANCIES REGARDING EXISTING CONDITIONS OR PROPOSED LAYOUT SHALL BE REPORTED TO LANDSTUDIES, INC. PRIOR TO CONSTRUCTION.

12. THE CONTRACTOR SHALL NOT CONSIDER DEMOLITION NOTES OR PLAN MARKINGS TO BE ALL-INCLUSIVE. IT IS THE CONTRACTORS RESPONSIBILITY TO ASSESS THE SITE AND PERFORM THE DEMOLITION AS REQUIRED TO PERFORM THE WORK/NEW CONSTRUCTION.

13. CONTRACTOR SHALL TAKE ALL NECESSARY PRECAUTIONS TO LOCATE AND PROTECT THE EXISTING UTILITIES WITHIN THE PROJECT AREA WHILE MAINTAINING UNINTERRUPTED SERVICE. CONTRACTOR SHALL FIELD LOCATE ALL UTILITIES AND COORDINATE APPROPRIATE RELOCATION EFFORTS (AS MAY BE NECESSARY) WITH RESPECTIVE UTILITY COMPANIES. DAMAGE TO ANY UTILITY SHALL BE REPAIRED OR REPLACED TO THE SATISFACTION OF THE OWNER OF THE UTILITY COMPANY OR AUTHORITY, AT THE

CONTRACTOR'S EXPENSE.

14. THE CONTRACTOR SHALL BE RESPONSIBLE FOR OBTAINING ANY PERMITS FROM THE MUNICIPALITY RELATIVE TO THE

CONSTRUCTION PROPOSED ON THIS PLAN THAT HAVE NOT PREVIOUSLY BEEN OBTAINED.

15. CONTRACTOR SHALL ENSURE THAT GRADING PLAN IS IMPLEMENTED CORRECTLY AND THAT PROPER DRAINAGE IS PROVIDED

DURING CONSTRUCTION OPERATIONS.

16. THE CONTRACTOR IS RESPONSIBLE TO VERIFY EARTHWORK QUANTITIES INCLUDING APPROPRIATE SOIL MATERIALS TO SATISFY THE

CONSTRUCTION REQUIREMENTS PRIOR TO THE START OF CONSTRUCTION.

17. TOPSOIL MUST BE FREE OF ROCKS, LARGE DEBRIS, WOODY OR VEGETATED MATERIAL, FROZEN PARTICLES OR OTHER FOREIGN OR OBJECTIONABLE MATERIAL THAT WOULD INHIBIT VEGETATIVE ESTABLISHMENT OR GROWTH. TOPSOIL MUST BE SUITABLE TO SUPPORT A DIVERSE AND HEALTHY VEGETATIVE COVER AND PLANTINGS AS REQUIRED BY THE PROJECT SCOPE.

18. THE CONTRACTOR SHALL BE RESPONSIBLE FOR ALL TRAFFIC CONTROL, TRENCH BARRICADES/COVERINGS, SHEETING AND SHORING

AS NECESSARY TO COMPLETE THE WORK.

19. CONTRACTOR SHALL PROVIDE DUST CONTROL TO AVOID NUISANCE TO SURROUNDING PROPERTY OWNERS, AND AS REQUIRED BY LOCAL AUTHORITIES. MAINTAIN ROADWAYS FREE OF DUST BUILD-UP BY MECHANICAL MEANS OR OTHER APPROVED METHODS.

FURNISH AND APPLY CLEAN WATER FOR THE PURPOSE OF ALLAYING DUST CONDITIONS AS REQUIRED.

20. SAW CUTTING OF PAVEMENT, IF REQUIRED, JOINTS SHALL BE STRAIGHT, NEAT AND CLEAN.

21. FAILURE TO SPECIFICALLY IDENTIFY ANY WORK WHICH WOULD NORMALLY BE REQUIRED TO COMPLETE THE PROJECT SHALL NOT

RELIEVE THE CONTRACTOR OF RESPONSIBILITY TO PERFORM SUCH WORK.

22. N.I.C. ABBREVIATION STANDS FOR "NOT IN CONTRACT" AND IS WORK NOT REQUIRED BY THE CONTRACTOR(S).

23. CONTRACTOR SHALL PRESERVE AND PROTECT EXISTING PLANT MATERIAL UNLESS INDICATED OTHERWISE.

BEDROCK

SLOPES UPWARD

AT EDGE OF VALLEY

PROPOSED FLOODPLAIN

PLANTINGS WITH GROUNDWATER

ACCESS

VEGETATED

BANK WITH

STABLE SLOPE

EXISTING RIPARIAN

VEGETATION

DISCONNECTED

FROM GROUNDWATER

BURIED ORGANIC

MATERIAL INDICATING

HISTORICAL

FLOODPLAIN

TYPICAL PROPOSED CONDITIONTYPICAL EXISTING CONDITION

LEGACY

SEDIMENT

IMPAIRMENT

HYDRIC SOIL LAYER

BASAL GRAVEL

WEATHERED BEDROCK

RESTORATION APPROACH OVERVIEW

NOTES:

1. THE LEGACY SEDIMENT LAYER CONSISTS OF MOSTLY HOMOGENOUS MATERIAL DEPOSITED IN RECENT GEOLOGIC HISTORY THROUGH UPLAND EROSION AND STREAM ENCROACHMENTS RESULTING FROM HUMAN IMPACTS. THE MAJORITY

OF EXCAVATION IS THIS LEGACY SEDIMENT.

2. THE HYDRIC SOIL LAYER REPRESENTS THE HISTORICAL FLOODPLAIN SURFACE PRIOR TO THE DEPOSITION OF LEGACY SEDIMENT. THIS SOIL LAYER WAS NOT ABLE TO BE OBSERVED DURING FIELD INVESTIGATIONS AND GIVEN THE MODERN DAY CONSTRAINTS THE PROPOSED FLOODPLAIN SURFACE IS STILL IN LEGACY SEDIMENT. THE LEGACY SEDIMENT ON THIS SITE IS A SANDY SILT COMPOSITION, SO THERE IS MORE CONNECTION WITH SUBSURFACE LAYERS IN THE PROPOSED

CONDITION.

3. A BASAL GRAVEL LAYER TYPICALLY FOLLOWS UNDERNEATH THE HYDRIC SOIL LAYER, BUT THIS SOIL LAYER WAS NOT ABLE TO BE VISUALLY OBSERVED DURING FIELD INVESTIGATIONS. THE BASAL GRAVEL LAYER WAS IDENTIFIED IN ISOLATED

LOCATIONS USING A TILE PROBE.

EXISTING

ENTRENCHED

CHANNEL

EXISTING

PERCHED

STREAMBED

EXISTING

NORMAL WATER

SURFACE

(UNCHANGED)

O D

E S

O N

SYMPLOCARPUS FOETIDUS (SKUNK CABBAGE) HARVESTING

SKUNK CABBAGE IS PRESENT ON SITE IN SEVERAL AREAS IN THE EXISTING CONDITION. DURING

CONSTRUCTION IT IS THE CONTRACTORS RESPONSIBILITY TO HARVEST THIS EXISTING SKUNK

CABBAGE AND STAGE NEARBY TO THEN BE INCORPORATED INTO THE RESTORED FLOODPLAIN

ONCE FINAL GRADE IS ACHIEVED.

AbA

RdB

PeB2

PeC2 AsB2

Bo AbB

RaB

PeB2

RaB

RdB

PeB2

Bc Bo

Bo BuC

BcAt

PeB2

AsB2

375380385

385390395

379378

0 376

376373371

378379

385385

HOFFER ROAD

NORTH MARKET STREET

(STATE ROUTE 230)

INDUSTRIAL ROAD

ZAEGER, JAMES

34-026-030

MOSER, ERIC

LEE

34-026-019

CUSTER,

HOWARD

34-026-019

LONDONDERRY

TOWNSHIP

34-026-036

LONDONDERRY

TOWNSHIP

34-026-036

99 INDUSTRIAL

ROAD LLC

34-026-019

COUNTY OF

LANCASTER

34-026-019

LANCASTER

COUNTY

CONSERVANCY

34-026-019

COUNTY OF

LANCASTER

34-026-019

COUNTY OF

LANCASTER

34-026-019

C O

C R

(W W

F/ M

HOFFER ROAD

UNT 1 TO

CONEW

AGO CREEK

(W W

F/M F)

EX-ROW

FP500

FP100

FP100FP100

FP100

FP500

FP500 FP500

FP500

FP10

FP100

FP10

FP50

FP500

FW FW

FP100

LOD LOD

LOD

WETLAND B

(PEM)

0.82 AC

WETLAND H

(PEM)

0.20 AC WETLAND G

(PEM)

0.68 AC

WETLAND F

(PEM)

0.01 AC

WETLAND D

(PFO)

0.14 AC

UNT 3 TO

CONEWAGO CREEK

(WWF/MF)

WETLAND C

(PEM)

0.61 AC

WETLAND E

(PEM)

0.31 AC

WETLAND A

(PEM)

0.81 AC

UNT 2 TOCONEWAGO CREEK

(WWF/MF)

LOD

EXISTING

GRAVEL PAD

MATCHLINE 1

0+00

1+00

2+00

7+00

8+00

9+00

10+00 11+00

12+00

0+00

1+00

2+00

LEGEND

EXISTING MAJOR CONTOUR

EXISTING MINOR CONTOUR

EXISTING APPROX. ROAD RIGHT-OF-WAY (PENNDOT)

EXISTING 500-YEAR FLOODPLAIN (FEMA)

EXISTING 100-YEAR FLOODPLAIN (FEMA)

EXISTING FLOODWAY (FEMA)

EXISTING EDGE OF CHANNEL

EXISTING GUIDE RAIL

EXISTING OVERHEAD ELECTRIC

EXISTING PROPERTY BOUNDARY

SOILS

EXISTING TREE LINE

EXISTING WETLAND

LIMIT OF DISTURBANCE

PROPOSED MAJOR CONTOURS

PROPOSED MINOR CONTOURS

EX-ROW

FP100

OE OE

LOD

HaB

FP500

SCALE:

DATE:

CHECKED BY:

DRAWN BY:

PROJECT NUMBER:

SHEET NUMBER:

REVISIONS

NO. DATE DESCRIPTION

P R

C T:

S H

E E

7-la nd st ud ie s.

co m la nd la nd st ud ie s.

co m

�1 oU tK �6 tU ee t /i tit �3 �1 7�

4�

3$�042�24

SIGNATURE BLOCK

C O

N E

W A

G O

C R

E E

K P

H A

S E

D O

N D

E R

R Y

T O

W N

S H

R S

C H

U R

C H

R O

A D

N , P

0' 100' 200' 300'

SCALE: 1" = 100'

K E

Y M

A P

D-131.21-25

01/23/2026

OF 18

1" = 100'

APPROXIMATE PENNDOT ROW

SHEETS: 4, 6, 11, & 15

SHEETS: 5, 7, 12, & 16

O D

E S

O N

PeB2 Bo

0 376

373371

372.17

LSI BM2 2025

375.57

LSI BM3 2025

380.99

LSI BM6

377.69

LSI BM5

18" SLCPP

-L

" C

.0 5%

90-LF 24" CONCRETE

INV 373.5'; PIPE @ 2.20%

HOFFER ROAD

NORTH MARKET STREET

(STATE ROUTE 230)

ZAEGER, JAMES

34-026-030

LONDONDERRY TOWNSHIP

34-026-036

FW FW

COUNTY OF LANCASTER

34-026-019

C O

C R

(W W

F/ M

UNT 1 TO

CONEW

AGO CREEK

(W W

F/M F)

EX-ROW

EX-ROW EX-ROW

EX-ROW

FP100

APPROXIMATE PENNDOT ROW

EXISTING

BILLBOARD

WETLAND B

(PEM)

0.82 AC

WETLAND H

(PEM)

0.20 AC

WETLAND G

(PEM)

0.68 AC

WETLAND F

(PEM)

0.01 AC

WETLAND D

(PFO)

0.14 AC

UNT 3 TO

CONEWAGO CREEK

(WWF/MF)

EXISTING

ENDWALL &

RIPRAP SCOUR

HOLE

WETLAND C

(PEM)

0.61 AC

WETLAND E

(PEM)

0.31 AC

WETLAND A

(PEM)

0.81 AC

UNT 2 TOCONEWAGO CREEK

(WWF/MF)

APPROXIMATE PENNDOT ROW

LOD

LOD LOD

LOD

LOD LOD LOD

LOD

LODLOD

LOD

EXISTING CONCRETE

PIPE TO BE REMOVED

EXISTING MEMORIAL TREE

TO BE RELOCATED OUTSIDE

GRADING AREA

EXISTING 18" SLCPP

TO BE TRIMMED AT

PROPOSED 373'

CONTOURINV. 373.33'

MATCHLINE

TP-R

370.52

TP-R

368.62

TP-R

368.43

TP-R

369.09

TP-R

368.94

TP-R

368.60

TP-R

370.61

TP-R

370.20

TP-R

369.80

TOP GLEY

372.09

372.42

TP-GRV

371.23

TP-GRV

TP-R

369.49

LEGEND

EXISTING MAJOR CONTOUR

EXISTING MINOR CONTOUR

EXISTING APPROX. ROAD RIGHT-OF-WAY (PENNDOT)

EXISTING 500-YEAR FLOODPLAIN (FEMA)

EXISTING 100-YEAR FLOODPLAIN (FEMA)

EXISTING FLOODWAY (FEMA)

EXISTING EDGE OF CHANNEL

EXISTING GUARD RAIL

EXISTING ROAD

EXISTING OVERHEAD ELECTRIC

EXISTING PARCEL LINES (COUNTY GIS)

SOILS

EXISTING TREE LINE

EXISTING AREA TO BE CLEARED AND GRUBBED

EXISTING WETLAND

EXISTING TREE TO BE RELOCATED

BENCHMARK LOCATION

EX-ROW

FP100

OE OE

HaB

FP500

100.00

LSI BM #

SCALE:

DATE:

CHECKED BY:

DRAWN BY:

PROJECT NUMBER:

SHEET NUMBER:

REVISIONS

NO. DATE DESCRIPTION

P R

C T:

S H

E E

7-la nd st ud ie s.

co m la nd la nd st ud ie s.

co m

�1 oU tK �6 tU ee t /i tit �3 �1 7�

4�

3$�042�24

SIGNATURE BLOCK

C O

N E

W A

G O

C R

E E

K P

H A

S E

D O

N D

E R

R Y

T O

W N

S H

R S

C H

U R

C H

R O

A D

N , P

0' 40' 80' 120'

SCALE: 1" = 40'

E X

N G

C O

N D

N S

E M

N P

D-131.21-25

01/23/2026

OF 18

1" = 40'

O D

E S

PeC2

AsB2

RdB

PeB2

BcAt

PeB2

385385

384.61

LSI BM1 2025

372.17

LSI BM2 2025

MOSER, ERIC LEE

34-026-019

LONDONDERRY TOWNSHIP

34-026-036

HOFFER ROAD

FP100

FP500 FP500

FP500

FP50

FP100FP100

FP100

FP10

FP100

FP500

LOD

EXISTING BUILDING

EXISTING

ENDWALL &

RIPRAP SCOUR

HOLE

LOD

EXISTING

GRAVEL PAD

MATCHLINE

LEGEND

EXISTING MAJOR CONTOUR

EXISTING MINOR CONTOUR

EXISTING APPROX. ROAD RIGHT-OF-WAY (PENNDOT)

EXISTING 500-YEAR FLOODPLAIN (FEMA)

EXISTING 100-YEAR FLOODPLAIN (FEMA)

EXISTING FLOODWAY (FEMA)

EXISTING EDGE OF CHANNEL

EXISTING GUARD RAIL

EXISTING ROAD

EXISTING OVERHEAD ELECTRIC

EXISTING PARCEL LINES (COUNTY GIS)

SOILS

EXISTING TREE LINE

EXISTING AREA TO BE CLEARED AND GRUBBED

EXISTING WETLAND

EXISTING TREE TO BE RELOCATED

BENCHMARK LOCATION

EX-ROW

FP100

OE OE

HaB

FP500

100.00

LSI BM #

SCALE:

DATE:

CHECKED BY:

DRAWN BY:

PROJECT NUMBER:

SHEET NUMBER:

REVISIONS

NO. DATE DESCRIPTION

P R

C T:

S H

E E

7-la nd st ud ie s.

co m la nd la nd st ud ie s.

co m

�1 oU tK �6 tU ee t /i tit �3 �1 7�

4�

3$�042�24

SIGNATURE BLOCK

C O

N E

W A

G O

C R

E E

K P

H A

S E

D O

N D

E R

R Y

T O

W N

S H

R S

C H

U R

C H

R O

A D

N , P

0' 40' 80' 120'

SCALE: 1" = 40'

E X

N G

C O

N D

N S

E M

N P

D-131.21-25

01/23/2026

OF 18

1" = 40'

O D

E S

O N

AREA WITHIN LOD SHOWN HERE SHALL

BE CONSIDERED THE WORK AREA FOR

ADDITIVE ALTERNATE 2 (A2) AND

DEDUCTIVE ALTERNATE 1 (D1)

PeB2 Bo

0 376

373371

372.17

LSI BM2 2025

375.57

LSI BM3 2025

380.99

LSI BM6

377.69

LSI BM5

18" SLCPP

90-LF 24" CONCRETE

INV 373.5'; PIPE @ 2.20%

HOFFER ROAD

NORTH MARKET STREET

(STATE ROUTE 230)

ZAEGER, JAMES

34-026-030

LONDONDERRY TOWNSHIP

34-026-036

FW FW

COUNTY OF LANCASTER

34-026-019

C O

C R

(W W

F/ M

UNT 1 TO

CONEW

AGO CREEK

(W W

F/M F)

EX-ROW

EX-ROW EX-ROW

EX-ROW

FP100

APPROXIMATE PENNDOT ROW

EXISTING

BILLBOARD

WETLAND B

(PEM)

0.82 AC

WETLAND H

(PEM)

0.20 AC

WETLAND G

(PEM)

0.68 AC

WETLAND F

(PEM)

0.01 AC

WETLAND D

(PFO)

0.14 AC

UNT 3 TO

CONEWAGO CREEK

(WWF/MF)

EXISTING

ENDWALL &

RIPRAP SCOUR

HOLE

WETLAND C

(PEM)

0.61 AC

WETLAND E

(PEM)

0.31 AC

WETLAND A

(PEM)

0.81 AC

UNT 2 TOCONEWAGO CREEK

(WWF/MF)

APPROXIMATE PENNDOT ROW

LOD

LOD LOD

LOD

LOD LOD LOD

LOD

LODLOD

LOD

MATCHLINE

6 37

7+00

8+00

9+00

10+00

11+00

12+00

0+00

1+00

2+00

0+00

1+00

2+00

3+00

4+00

4+50

0+00

1+00

2+00

3+00

TP-R

370.52

TP-R

368.62

TP-R

368.43

TP-R

369.09

TP-R

368.94

TP-R

368.60

TP-R

370.61

TP-R

370.20

TP-R

369.80

TOP GLEY

372.09

372.42

TP-GRV

371.23

TP-GRV

0+00

1+00

2+00

2+30

TP-R

369.49

370.85

371.03

371.27

1 371.69

371.85

372.76

371.93

372.32

372.55

372.32

372.12

371.83

LEGEND

EXISTING MAJOR CONTOUR

EXISTING MINOR CONTOUR

EXISTING APPROX. ROAD RIGHT-OF-WAY (PENNDOT)

EXISTING 500-YEAR FLOODPLAIN (FEMA)

EXISTING 100-YEAR FLOODPLAIN (FEMA)

EXISTING FLOODWAY (FEMA)

EXISTING EDGE OF CHANNEL

EXISTING GUARD RAIL

EXISTING ROAD

EXISTING OVERHEAD ELECTRIC

EXISTING PARCEL LINES (COUNTY GIS)

SOILS

EXISTING TREE LINE

EXISTING WETLAND

BENCHMARK LOCATION

EX-ROW

FP100

OE OE

LOD LOD

HaB

FP500

PROPOSED SPOT ELEVATION

LIMIT OF DISTURBANCE

PROPOSED TREELINE

PROPOSED MAJOR CONTOUR

PROPOSED MINOR CONTOUR

PROPOSED LOGSILL

PROPOSED ROCK UNDERLAYMENT

TEMPORARY STOCKPILE AREA

TEMPORARY STAGING AREA

PROPOSED WOODY DEBRIS

100.00

LSI BM #

LS LS LS

375.00

SCALE:

DATE:

CHECKED BY:

DRAWN BY:

PROJECT NUMBER:

SHEET NUMBER:

REVISIONS

NO. DATE DESCRIPTION

P R

C T:

S H

E E

7-la nd st ud ie s.

co m la nd la nd st ud ie s.

co m

�1 oU tK �6 tU ee t /i tit �3 �1 7�

4�

3$�042�24

SIGNATURE BLOCK

C O

N E

W A

G O

C R

E E

K P

H A

S E

D O

N D

E R

R Y

T O

W N

S H

R S

C H

U R

C H

R O

A D

N , P

0' 40' 80' 120'

SCALE: 1" = 40'

R E

R A

N G

R A

G P

D-131.21-25

01/23/2026

OF 18

1" = 40'

TYP.

LOGSILLD-1

TYP.

WOODY DEBRISD-2

TYP.

CHANNEL BANK GRADINGD-3

TYP.

ROOT WADD-4

TYP.

FLOODPLAIN CONSTRUCTIOND-5

RU-1: R-6, 36" DEPTH

ROCK UNDERLAYMENTD-6

RU-2: R-4, 18" DEPTH

ROCK UNDERLAYMENTD-6

PP-1

PLUNGE POOLD-7

MAINSTEM VALLEY STA 6+28

CROSS SECTION 1X-1

MAINSTEM VALLEY STA 12+43

CROSS SECTION 2X-2

TRIBUTARY VALLEY STA 0+65

CROSS SECTION 3X-3

TRIBUTARY VALLEY STA 0+99

CROSS SECTION 4X-4

MAINSTEM

PROPOSED VALLEY ALIGNMENTP-1

TRIBUTARY

PROPOSED VALLEY ALIGNMENTP-2

RA-1

RIPRAP APRON AT PIPE OUTLET WITH ENDWALLE-11

RA-2; PIPE INV. 373'

RIPRAP APRON AT PIPE OUTLET WITH ENDWALLE-11

EXISTING ISLAND

(VALLEY STA 10+80 - 13+00)

PROPOSED FLOODPLAIN OBSTRUCTIONTRIBUTARY VALLEY STA 1+90

CROSS SECTION 5X-5

O D

E S

O N

RU-4: R-3, 9" DEPTH

ROCK UNDERLAYMENTD-6

RU-5: R-3, 9" DEPTH

ROCK UNDERLAYMENTD-6

RU-6: R-3, 9" DEPTH

ROCK UNDERLAYMENTD-6

RU-3: R-4, 18" DEPTH

ROCK UNDERLAYMENTD-6

TYP.

TYPE D-W ENDWALLE-10

FINAL GRADE OF ISLAND WILL BE

DEPENDENT UPON WATER SURFACE

ELEVATION AT TIME OF CONSTRUCTION,

AsB2

RdB

PeB2

BcAt

PeB2

385385

384.61

LSI BM1 2025

372.17

LSI BM2 2025

MOSER, ERIC LEE

34-026-019

LONDONDERRY TOWNSHIP

34-026-036

HOFFER ROAD

FP100

FP500 FP500

FP500

FP50

FP100FP100

FP100

FP10

FP100

FP500

LOD

EXISTING BUILDING

EXISTING

ENDWALL &

RIPRAP SCOUR

HOLE

LOD

EXISTING

GRAVEL PAD

MATCHLINE

0+00

1+00

2+00

LEGEND

EXISTING MAJOR CONTOUR

EXISTING MINOR CONTOUR

EXISTING APPROX. ROAD RIGHT-OF-WAY (PENNDOT)

EXISTING 500-YEAR FLOODPLAIN (FEMA)

EXISTING 100-YEAR FLOODPLAIN (FEMA)

EXISTING FLOODWAY (FEMA)

EXISTING EDGE OF CHANNEL

EXISTING GUARD RAIL

EXISTING ROAD

EXISTING OVERHEAD ELECTRIC

EXISTING PARCEL LINES (COUNTY GIS)

SOILS

EXISTING TREE LINE

EXISTING WETLAND

BENCHMARK LOCATION

EX-ROW

FP100

OE OE

LOD LOD

HaB

FP500

PROPOSED SPOT ELEVATION

LIMIT OF DISTURBANCE

PROPOSED TREELINE

PROPOSED MAJOR CONTOUR

PROPOSED MINOR CONTOUR

PROPOSED LOGSILL

PROPOSED ROCK UNDERLAYMENT

TEMPORARY STOCKPILE AREA

TEMPORARY STAGING AREA

PROPOSED WOODY DEBRIS

100.00

LSI BM #

LS LS LS

375.00

SCALE:

DATE:

CHECKED BY:

DRAWN BY:

PROJECT NUMBER:

SHEET NUMBER:

REVISIONS

NO. DATE DESCRIPTION

P R

C T:

S H

E E

7-la nd st ud ie s.

co m la nd la nd st ud ie s.

co m

�1 oU tK �6 tU ee t /i tit �3 �1 7�

4�

3$�042�24

SIGNATURE BLOCK

C O

N E

W A

G O

C R

E E

K P

H A

S E

D O

N D

E R

R Y

T O

W N

S H

R S

C H

U R

C H

R O

A D

N , P

0' 40' 80' 120'

SCALE: 1" = 40'

R E

R A

N G

R A

G P

D-131.21-25

01/23/2026

OF 18

1" = 40'

O D

E S

O N

TEMPORARY STAGING AREA

TEMPORARY STOCKPILE AREA

AREA WITHIN LOD SHOWN HERE SHALL

BE CONSIDERED THE WORK AREA FOR

Station

3+50 4+00 4+50 5+00 5+50 6+00 6+50 7+00 7+50 8+00 8+50 9+00 9+50 10+00 10+50 11+00 11+50 12+00 12+50 13+00 13+50

0.13%

+1 0.

0.24%

+6 3.

D G

+0 7.

N D

G R

O W

R Y

P-

TILE PROBE

RESISTANCE

ELEV = 370.52

TILE PROBE

RESISTANCE

ELEV = 368.62

TILE PROBE

RESISTANCE

ELEV = 368.43

TILE PROBE

RESISTANCE

ELEV = 369.09

TILE PROBE

RESISTANCE

ELEV = 368.94

TILE PROBE

RESISTANCE

ELEV = 368.60

TILE PROBE

GRAVEL

ELEV = 371.23

Station

0+00 0+50 1+00 1+50 2+00 2+50 3+00 3+23

0.00% 0.00%

0.00%

1.29%

R Y

G R

R Y

D O

W N

G R

TILE PROBE

RESISTANCE

ELEV = 369.80

TILE PROBE

RESISTANCE

ELEV = 369.49

TILE PROBE

RESISTANCE

ELEV = 370.61

HYDRIC SOIIL OBSERVED

IN STREAMBANK

ELEV = 372.09

TILE PROBE

GRAVEL

ELEV = 372.42

SCALE:

DATE:

CHECKED BY:

DRAWN BY:

PROJECT NUMBER:

SHEET NUMBER:

REVISIONS

NO. DATE DESCRIPTION

P R

C T:

S H

E E

7-la nd st ud ie s.

co m la nd la nd st ud ie s.

co m

�1 oU tK �6 tU ee t /i tit �3 �1 7�

4�

3$�042�24

SIGNATURE BLOCK

C O

N E

W A

G O

C R

E E

K P

H A

S E

D O

N D

E R

R Y

T O

W N

S H

R S

C H

U R

C H

R O

A D

N , P

P R

D-131.21-25

01/23/2026

OF 18

AS SHOWN

H: 1"=40' V: 1"=4'

PROPOSED VALLEY ALIGNMENT - MAINSTEM - PROFILE VIEWP-1

H: 1"=40' V: 1"=4'

PROPOSED VALLEY ALIGNMENT - TRIBUTARY - PROFILE VIEWP-2

EXISTING GRADE

PROPOSED FLOODPLAIN GRADE

EXISTING GRADE

TYP.

LOGSILLD-1

TYP.

LOGSILLD-1

PP-1

PLUNGE POOLD-7

RU-1: R-6, 36" DEPTH

ROCK UNDERLAYMENTD-6

EXISTING ISLAND

EXISTING WATER

SURFACE

PROPOSED ISLAND

GRADING PROFILE FL

O O

D P

R E

R A

Station

Mainstem Cross Section #2

0+00 0+50 1+00 1+50 2+00 2+50 3+00

90-LF 24"

CONCRETE

PIPE @ 2.20%

Station

0+00 0+50 1+00 1+50 2+00 2+50 3+00 3+50 4+00 4+50

4.84%

20.00%

0.00%

371.05 10

.00

20.00%

0.00% 10.00%

.00

% 0.00%

LIMIT OF DISTURBANCE

HOFFER

ROAD

LIMIT OF DISTURBANCE

HOFFER

ROAD

FEMA 100-YR FLOODPLAIN

+ 61' TO FEMA FLOODWAY

WETLAND A

FEMA FLOODWAY

& 100-YR FLOODPLAIN

+ 12' TO FEMA FLOODWAY FEMA FLOODWAY

+ 478' + 285'

+ 737' TO FEMA

100-YR FLOODPLAIN

Station

0+00 0+50 1+00

Station

0+00 0+50 1+00 1+50

Station

0+00 0+50 1+00 1+50 2+00 2+30

LIMIT OF DISTURBANCE

FEMA 100-YR FLOODPLAIN FEMA 100-YR FLOODPLAIN

WETLAND

TILE PROBE

RESISTANCE

ELEV = 370.61 TILE PROBE

RESISTANCE

ELEV = 370.20

TILE PROBE

RESISTANCE

ELEV = 369.49

18.16%

0.00%

WETLAND B

WETLAND

+ 18' TO

50' FLOODWAY 50' FLOODWAY

50' FLOODWAY

WETLAND B

FEMA 100-YR FLOODPLAIN

50' FLOODWAY

LIMIT OF DISTURBANCE

WETLAND B

ENTIRE CROSS SECTION CONTAINED WITHIN CONEWAGO CREEK FLOODPLAINENTIRE CROSS SECTION CONTAINED WITHIN CONEWAGO CREEK FLOODPLAINENTIRE CROSS SECTION CONTAINED

WITHIN CONEWAGO CREEK FLOODPLAIN

SCALE:

DATE:

CHECKED BY:

DRAWN BY:

PROJECT NUMBER:

SHEET NUMBER:

REVISIONS

NO. DATE DESCRIPTION

P R

C T:

S H

E E

7-la nd st ud ie s.

co m la nd la nd st ud ie s.

co m

�1 oU tK �6 tU ee t /i tit �3 �1 7�

4�

3$�042�24

SIGNATURE BLOCK

C O

N E

W A

G O

C R

E E

K P

H A

S E

D O

N D

E R

R Y

T O

W N

S H

R S

C H

U R

C H

R O

A D

N , P

C R

O S

S S

E C

N S

D-131.21-25

01/23/2026

OF 18

AS SHOWN

EXISTING GRADE

PROPOSED FLOODPLAIN GRADE

RA-1: R-3, 9" DEPTH

RIPRAP APRON AT PIPE OUTLETD-8

H: 1"=40' V: 1"=4'

CROSS SECTION 1 - MAINSTEM VALLEY STA 6+28 - PROFILE VIEWX-1

H: 1"=40' V: 1"=4'

CROSS SECTION 2 - MAINSTEM VALLEY STA 12+43 - PROFILE VIEWX-2

H: 1"=40' V: 1"=4'

CROSS SECTION 3 - TRIBUTARY VALLEY STA 0+65 - PROFILE VIEWX-3

PROPOSED FLOODPLAIN GRADE

EXISTING GRADE

EXISTING ISLAND

EXISTING GRADE EXISTING GRADE

PP-1

PLUNGE POOLD-7

RU-1: R-6, 36" DEPTH

ROCK UNDERLAYMENTD-6

PROPOSED FLOODPLAIN OBSTRUCTION

H: 1"=40' V: 1"=4'

CROSS SECTION 4 - TRIBUTARY VALLEY STA 0+99 - PROFILE VIEWX-4 H: 1"=40' V: 1"=4'

CROSS SECTION 5 - TRIBUTARY VALLEY STA 1+90 - PROFILE VIEWX-5

RU-1: R-6, 36" DEPTH

ROCK UNDERLAYMENTD-6 PROPOSED FLOODPLAIN GRADE

EXISTING GRADE

O D

E S

CHECKED BY:

DRAWN BY:

PROJECT NUMBER:

SHEET NUMBER:

REVISIONS

NO. DATE DESCRIPTION

P R

C T:

S H

E E

7-la nd st ud ie s.

co m la nd la nd st ud ie s.

co m

�1 oU tK �6 tU ee t /i tit �3 �1 7�

4�

3$�042�24

SIGNATURE BLOCK

C O

N E

W A

G O

C R

E E

K P

H A

S E

D O

N D

E R

R Y

T O

W N

S H

R S

C H

U R

C H

R O

A D

N , P

R E

R A

N D

D-131.21-25

01/23/2026

OF 18

N/A

NOT TO SCALE

FLOODPLAIN CONSTRUCTIOND-5

FLOODPLAIN

DESIGN GRADE

MICROTOPOGRAPHY;

DO NOT DEVIATE FROM

DESIGN GRADES MORE

THAN +/- 0.5'

NOTES:

1. FOR SITES WHERE OVEREXCAVATION IS ANTICIPATED TO BE BROADLY REQUIRED - TOPSOIL SHALL BE SALVAGED WITHIN PROPOSED

FLOODPLAIN AND STOCKPILED FOR USE AS TOP DRESSING TO FINAL GRADE.

2. EXCAVATE PROPOSED FLOODPLAIN TO DESIGN ELEVATIONS AND PROCEED WITH THE NECESSARY APPROACH, DEPENDANT UPON WHAT TYPE OF MATERIAL IS PRESENT AT THE DESIGN ELEVATIONS AS DETERMINED AND APPROVED BY THE ENGINEER:

2.1. OPTION A - IF SUITABLE GROWING MATERIAL IS PRESENT AT FINAL FLOODPLAIN ELEVATIONS, LEAVE THE MATERIAL IN PLACE AND

PROCEED WITH CONSTRUCTION.

2.2. OPTION B - IF UNSUITABLE GROWING MATERIAL IS PRESENT AT FINAL FLOODPLAIN ELEVATIONS, OVER-EXCAVATE BY 6" AND

REPLACE WITH SALVAGED TOPSOIL TO FINAL FLOODPLAIN GRADE.

3. CHANNELS AND FLOODPLAIN FEATURES SHALL BE CONSTRUCTED AND INSTALLED WITH MINIMAL TRAFFIC ON THE FLOODPLAIN FOOTPRINT BY WORKING BACKWARDS OFF THE EXISTING GRADE. THE USE OF EQUIPMENT ON THE FINISHED FLOODPLAIN GRADE MUST

BE APPROVED BY THE ENGINEER.

4. IRREGULARITIES IN FINAL GRADE ARE DESIRABLE TO CREATE MICRO-TOPOGRAPHY (NOT TO EXCEED +/- 0.5' FROM DESIGN ELEVATIONS), WHICH IS NOT DEPICTED BY PROPOSED CONTOURS. THIS MICRO-TOPOGRAPHY IS NOT TO BE CONSIDERED AN OVERALL TOLERANCE WHEN GRADING THE FLOODPLAIN. PROPOSED GRADES SHOULD BE MET FIRST AND THEN ROUGHENED ACROSS THE FULL WIDTH OF

THE FLOODPLAIN.

5. WHERE IT IS NECESSARY TO TRAVERSE ACROSS THE FLOODPLAIN, ALL RUTS LEFT BY EQUIPMENT SHALL BE FILLED IF DEEMED

NECESSARY BY THE PROJECT DESIGNER. DO NOT COMPACT THE FLOODPLAIN.

CROSS SECTION VIEW SALVAGED SOIL PLACED AT THE

DIRECTION OF THE ENGINEER

UNDISTURBED SUBGRADE UNDISTURBED SUBGRADE

NOT TO SCALE

LOG SILLD-1

FLOW

PROFILE VIEW

FLOODPLAIN WIDTH (VARIES)

LIMIT OF FLOODPLAIN GRADING (VARIES)

LOGS SHALL BE

PLACED APPROX. 0.5'

BELOW PROPOSED

FLOODPLAIN GRADE

PROPOSED FLOODPLAIN SURFACE

EXTEND LOGS INTO SIDE

SLOPES & KEY IN (5' MIN.)

CROSS-SECTION VIEW

SUBGRADE

LOG SILL NOTES:

1. LOGS SHALL BE 12" MIN. DIAMETER AND OF MOSTLY STRAIGHT FORM.

2. ALL PROPOSED LOG SILL STRUCTURES SHALL BE INSTALLED UNDER THE DIRECT SUPERVISION OF AND/OR

SUBJECT TO THE APPROVAL OF THE ENGINEER. IF STRUCTURE INSTALLATION AND PERFORMANCE ARE NOT IN ACCORDANCE WITH THE DETAILS AND SPECIFICATIONS, THE STRUCTURE SHALL BE RE-SET OR REINSTALLED IN ACCORDANCE WITH THE DESIGN DETAILS AND SPECIFICATIONS. ALL LOGS MUST BE APPROVED FOR DURABILITY BY THE ENGINEER PRIOR TO PLACEMENT. THE TOP SURFACE ELEVATION (INVERT ELEVATION) OF PROPOSED LOG SILL STRUCTURES SHALL NOT DEVIATE VERTICALLY GREATER THAN 0.2' FROM GRADE CONTROL INVERT DESIGN

ELEVATIONS.

3. THE SIZE, LOCATION AND ORIENTATION OF PROPOSED LOG SILL STRUCTURES ARE APPROXIMATE AND FINAL LOCATION/ORIENTATION MAY BE MODIFIED BY THE ENGINEER BASED ON SITE CONDITIONS DURING

CONSTRUCTION.

4. LOG SILLS SHALL BE CONSTRUCTED OF LOGS HARVESTED ON SITE. IF SITE CLEARING DOES NOT RESULT IN AN

ADEQUATE SUPPLY OF LOGS, THEN LOGS WILL BE IMPORTED.

5. THE TOP SURFACE OF THE LOG SILL SHALL BE PLACED APPROXIMATELY 0.5' BELOW PROPOSED FLOODPLAIN GRADE. AS A RESULT, THE TOP SURFACE OF THE LOG WILL NOT BE VISIBLE ACROSS THE FLOODPLAIN.

5. ADJOINING LOGS SHALL OVERLAP A MINIMUM OF 2 FT.

6. LOG SILLS SHALL EXTEND ACROSS THE ENTIRE FLOODPLAIN AND SHALL BE KEYED INTO FLOODPLAIN SIDE SLOPES

BY A MINIMUM OF 5 FT OR AS DETERMINED BY THE ENGINEER.

7. NO SIGNIFICANT VOIDS SHALL EXIST BETWEEN ADJOINING LOGS OR UNDER THE GEOTEXTILE FABRIC. IN ORDER

TO PREVENT WATER-PIPING BETWEEN OR UNDER THE LOGS, THE CONTRACTOR SHALL CHOKE (BY HAND IF NECESSARY) ALL UNDESIRABLE VOIDS WITH CLAY AND ROCK FRAGMENTS IN COMBINATION WITH GEOTEXTILE

FABRIC. FILL ALL VOIDS GREATER THAN OR EQUAL TO 3 INCHES IN SIZE.

8. NONWOVEN GEOTEXTILE (8 OZ OR HEAVIER) MUST BE LAID ON THE UPSTREAM SIDE OF THE LOG AND EXTEND A DEPTH OF 2' BELOW THE LOG OR TO BEDROCK (WHICHEVER IS SHALLOWER). GEOTEXTILE IS TO BE NAILED 1' ON

CENTER WITH 1 12 INCH (OR LONGER) ROOFING NAILS.

9. THE LOGSILLS PROPOSED ALONG THE MAINSTEM CONEWAGO CREEK SHALL NOT PROJECT INTO OR UNDER THE

EXISTING STREAM CHANNEL.

NON-WOVEN

GEOTEXTILE

OVERLAP LOGS 2' MINIMUM

LIMIT OF

FLOODPLAIN

GRADING

(VARIES)

EXTEND LOGS INTO

FLOODPLAIN SIDE

SLOPES & KEY IN (5'

MIN.)

GRADE LOGS (TYP.)

OVERLAP GRADE LOGS

(2' MIN.)

PLAN VIEW

NOTE: SEE LOG SILL NOTES FOR SPECIFIC LOG SIZES

AA AA'

UNDISTURBED

EARTH

LOG 12" DIA. MIN.

(OR LARGEST LOGS

HARVESTED ON SITE)

TOP OF LOG 0.5' MAX.

FLOODPLAIN GRADE

FILL MATERIAL

(NO VOIDS)

FLOW FLOW

20° - 30°

FROM

BANK

NOTES:

1. LOGS MUST BE AT LEAST 12" IN DIAMETER AND 10' IN LENGTH WITH ROOT

BALL ATTACHED.

2. THE MAJORITY OF THE ROOT WAD MUST BE INSTALLED BELOW THE

NORMAL WATER SURFACE ELEVATION.

3. ROOT WADS MUST BE PLACED AT AN ANGLE OF 20°-30° FROM THE BANK.

NOT TO SCALE

ROOT WADD-4

NORMAL

WATER

SURFACE

FOOTER

ROCK

OR LOG

ROOT WAD

(10-15' LONG)

WOODY DEBRIS NOTES:

1. WOODY DEBRIS SHALL BE INSTALLED AT LOCATIONS SHOWN ON THE PROPOSED GRADING PLAN. SIZE, LOCATION, AND ORIENTATION OF STRUCTURES MAY BE ADJUSTED AT THE DIRECTION OF THE ENGINEER.

2. WOODY DEBRIS SHALL CONSIST OF A COMBINATION OF INDIVIDUAL LOGS, ROOT WADS, AND BRANCHES HARVESTED

FROM TREES/BRUSH THAT HAS BEEN CLEARED FROM THE SITE. ALL AVAILABLE ON-SITE WOODY MATERIAL SHALL BE USED. IF THE QUANTITY OF AVAILABLE MATERIAL IS DETERMINED TO BE INSUFFICIENT TO CONSTRUCT ALL STRUCTURES AS DESIGNED, THE INSTALLATION OF IN-CHANNEL WOODY DEBRIS SHALL BE PRIORITIZED (SEE DETAIL

D-4 ROOTWAD).

3. TYPES AND SIZES OF STRUCTURES WILL BE DEPENDENT UPON AVAILABLE MATERIAL. ALL STRUCTURES AND MATERIALS ARE SUBJECT TO THE APPROVAL OF THE ENGINEER. A MINIMUM OF 8 LINEAL FEET TOTAL OF LOG

AND/OR BRANCHES SHALL BE ASSUMED FOR EACH STRUCTURE.

4. ALL WOODY DEBRIS SHALL BE BURIED MIN. 60% AND/ OR PINNED WITH UPRIGHT SNAGS SO AS NOT BE DISPLACED

BY HIGH FLOWS.

5. INVASIVE AND UNDESIRABLE SPECIES SHALL NOT BE USED IN THE CONSTRUCTED FLOODPLAIN AND MUST BE

PROPERLY DISPOSED OF OFF SITE. EXAMPLE: TREE OF HEAVEN, BLACK WILLOW.

FLOODPLAIN

GRADE

EXISTING SUBGRADE

UPRIGHT SNAGUPRIGHT SNAG

BURIED ROOT

WADS, BRANCHES

AND LOGS

BASEFLOW

CHANNEL

BURIED ROOT WAD

OR BRANCHES AND LOGS

CROSS SECTION VIEW - IN FLOODPLAINPLAN VIEW

FLOW

NOT TO SCALE

WOODY DEBRISD-2

FLOODPLAIN

GRADE

EXISTING SUBGRADE

UPRIGHT SNAG

BURY ROOT WADS

AND BRANCHES MIN

50% BY MASS

CROSS SECTION VIEW - IN CHANNEL

MATTING EDGE AT OR

BELOW BASEFLOW WSE

ROLANKA BIOD-MAT 40

(OR EQUIVALENT)

EROSION CONTROL

MATTING, PER E&S

PLAN

1' MIN.

ROLANKA BIOD-MAT 40

(OR EQUIVALENT)

EROSION CONTROL

MATTING

18" LONG 2"X2" OAK STAKES

CHANNEL BANK GRADING NOTES:

1. 10:1 SLOPE SHALL TIE-IN TO EXISTING CHANNEL BANKS A MINIMUM OF 1' BELOW BASEFLOW W.S.E.

2. 18" LONG 2"X2" OAK STAKES USED TO SECURE MATTING ALONG EACH EDGE IN ADDITION TO

MANUFACTURER RECOMMENDED STAPLES. SPACING OF GRADE STAKES SHALL BE NO MORE

THAN 4' O.C.

3. ANY GRADING IN AND IMMEDIATELY ADJACENT TO ACTIVE STREAM FLOW MUST HAVE

STABILIZATION MATTING INSTALLED BEFORE THE END OF THE WORK DAY.

EXISTING

CHANNEL

PROPOSED FLOODPLAIN (WIDTH VARIES)

NOT TO SCALE

CHANNEL BANK GRADINGD-3

UNDISTURBED

SUBGRADE

W.S.E.

(VARIES)

10:1 TYP.

LIMIT OF

FLOODPLAIN

GRADING

(VARIES)

EXTEND ROCK 1' UP

SIDE SLOPES

RIPRAP CHOKED IN

WITH GRAVEL, SAND,

AND SILT

PROPOSED

FLOODPLAIN

SURFACE

PROPOSED

FLOODPLAIN

PROFILE VIEW

FLOW

RIPRAP CHOKED IN WITH

GRAVEL, SAND, AND SILT

SEE SCHEDULE FOR RIPRAP

PLACEMENT DEPTH AND SIZE

CROSS SECTION VIEW

NOT TO SCALE

ROCK UNDERLAYMENTD-6

NOTE:

1. RIPRAP SHALL BE CHOKED WITH SAND, SILT, AND GRAVEL TO FILL ALL VOIDS. FINAL MIX SHALL CONSIST OF 65%

RIPRAP AND 35% OTHER MATERIAL (SAND, SILT, AND GRAVEL), BY VOLUME. MIX MATERIALS PRIOR TO PLACEMENT.

2. ALL PROPOSED ROCK UNDERLAYMENT SHALL BE INSTALLED UNDER THE DIRECT SUPERVISION OF AND/OR SUBJECT

TO THE APPROVAL OF THE ENGINEER. IF INSTALLATION AND PERFORMANCE ARE NOT IN ACCORDANCE WITH THE DETAILS AND SPECIFICATIONS, THE STRUCTURE SHALL BE RE-SET OR REINSTALLED IN ACCORDANCE WITH THE

DESIGN DETAILS AND SPECIFICATIONS.

UNDISTURBED

EARTH

ROCK UNDERLAYMENT SCHEDULE

NO. RIPRAP SIZE PLACEMENT DEPTH

RU-1 R-6 36"

RU-2 R-4 18"

SEE SCHEDULE FOR RIPRAP

PLACEMENT DEPTH AND SIZE

PROFILE VIEW

FLOW

PLUNGE POOL NOTES:

1. RIPRAP THICKNESS SHALL BE 1.5 TIMES THE MAXIMUM STONE SIZE.

2. RIPRAP SHALL BE CHOKED WITH SAND, SILT, AND GRAVEL TO FILL ALL VOIDS.

FINAL MIX SHALL CONSIST OF 65% RIPRAP AND 35% OTHER MATERIAL (SAND,

SILT, AND GRAVEL), BY VOLUME.

3. CONSTRUCT IN ACCORDANCE WITH DESIGN ELEVATIONS AS SHOWN ON

TRIBUTARY VALLEY PROFILE P-2.

4. POOL BOTTOM WIDTH SHOWN IS A RANGE FROM NARROWEST TO LARGEST

ALONG THE TRIBUTARY VALLEY PROFILE P-2

LENGTH

(SEE GRADING PLAN)

R-4 RIPRAP PLACED TO 18" DEPTH

WITH NON-WOVEN

GEOTEXTILE UNDERLAY

BOTTOM ELEV.

INVERT OUT

SEE PROFILE P-2

INVERT IN

SEE PROFILE P-2

CROSS SECTION VIEW

WIDTH VARIES ALONG POOL

(SEE GRADING PLAN)

R-4 RIPRAP PLACED TO 18" DEPTH

WITH NON-WOVEN

GEOTEXTILE UNDERLAY

BASE FLOW

WATER SURFACE

BOTTOM WIDTH (BW)

BOTTOM LENGTH (BL)

NOT TO SCALE

PLUNGE POOLD-7

PLUNGE POOL DIMENSIONS

POOL BOTTOM

LENGTH

BOTTOM

WIDTH

BOTTOM

ELEVATION

PP-1 9.6' 3-4' 372.0'

O D

E S

O N

RU-3 R-4 18"

RU-4 R-3 9"

RU-5 R-3 9"

PeB2 Bo

0 376

373371

372.17

LSI BM2 2025

375.57

LSI BM3 2025

380.99

LSI BM6

377.69

LSI BM5

HOFFER ROAD

NORTH MARKET STREET

(STATE ROUTE 230)

ZAEGER, JAMES

34-026-030

LONDONDERRY TOWNSHIP

34-026-036

FW FW

COUNTY OF LANCASTER

34-026-019

C O

C R

(W W

F/ M

UNT 1 TO

CONEW

AGO CREEK

(W W

F/M F)

EX-ROW

EX-ROW EX-ROW

EX-ROW

FP100

APPROXIMATE PENNDOT ROW

EXISTING

BILLBOARD

WETLAND B

(PEM)

0.82 AC

WETLAND H

(PEM)

0.20 AC

WETLAND G

(PEM)

0.68 AC

WETLAND F

(PEM)

0.01 AC

WETLAND D

(PFO)

0.14 AC

UNT 3 TO

CONEWAGO CREEK

(WWF/MF)

EXISTING

ENDWALL &

RIPRAP SCOUR

HOLE

WETLAND C

(PEM)

0.61 AC

WETLAND E

(PEM)

0.31 AC

WETLAND A

(PEM)

0.81 AC

UNT 2 TOCONEWAGO CREEK

(WWF/MF)

APPROXIMATE PENNDOT ROW

LOD

LOD LOD

LOD

LOD LOD LOD

LOD

LODLOD

LOD

TSC

OCF

O C

F O

C F

OCF

O C

OCF

OCFOCFOCF

OCF

O C

OCF

OCFOCFOCFOCF

OCF

TSC

CF OCF

OCF

O C

F O

C F

O C

OCF

OCF OCF

OCF

OCF MATCHLINE

6 37

7+00

8+00

9+00

10+00

11+00

12+00

0+00

1+00

2+00

371.51

373.96

372.98

370.85

371.03

371.27

1 371.69

371.85

372.76

371.93

372.32

372.55

372.32

372.12

371.83

LEGEND

EXISTING MAJOR CONTOUR

EXISTING MINOR CONTOUR

EXISTING ROAD RIGHT-OF-WAY (PENNDOT)

EXISTING 500-YEAR FLOODPLAIN (FEMA)

EXISTING 100-YEAR FLOODPLAIN (FEMA)

EXISTING FLOODWAY (FEMA)

EXISTING EDGE OF CHANNEL

EXISTING GUARD RAIL

EXISTING ROAD

EXISTING OVERHEAD ELECTRIC

EXISTING PARCEL LINES (COUNTY GIS)

SOILS

EXISTING TREE LINE

EXISTING WETLAND

BENCHMARK LOCATION

EX-ROW

FP100

OE OE

LOD LOD

HaB

FP500

LIMIT OF DISTURBANCE

PROPOSED TREELINE

PROPOSED MAJOR CONTOUR

PROPOSED MINOR CONTOUR

CONSTRUCTION SAFETY FENCE

PROPOSED FILTER SOCK

PROPOSED SPOT ELEVATION

PROPOSED EROSION CONTROL

MATTING (BIOD-MAT 40)

PROPOSED EROSION CONTROL

MATTING (BIOD-MAT 90)

TEMPORARY STOCKPILE AREA

TEMPORARY STAGING AREA

PROPOSED ROCK

CONSTRUCTION ENTRANCE

PROPOSED TEMPORARY

STREAM CROSSING

PROPOSED TEMPORARY PUMP-AROUND

BYPASS SYSTEM

100.00

LSI BM #

TSC

OCF OCF

FS12 FS12

SCALE:

DATE:

CHECKED BY:

DRAWN BY:

PROJECT NUMBER:

SHEET NUMBER:

REVISIONS

NO. DATE DESCRIPTION

P R

C T:

S H

E E

7-la nd st ud ie s.

co m la nd la nd st ud ie s.

co m

�1 oU tK �6 tU ee t /i tit �3 �1 7�

4�

3$�042�24

SIGNATURE BLOCK

C O

N E

W A

G O

C R

E E

K P

H A

S E

D O

N D

E R

R Y

T O

W N

S H

R S

C H

U R

C H

R O

A D

N , P

0' 40' 80' 120'

SCALE: 1" = 40'

S P

D-131.21-25

01/23/2026

OF 18

1" = 40'

BIOD-MAT 40

EROSION CONTROL BLANKET - FLOODPLAINE-1

BIOD-MAT 40

EROSION CONTROL BLANKET - FLOODPLAINE-1

BIOD-MAT 90

EROSION CONTROL BLANKET - FLOODPLAINE-1

TYP.

CONSTRUCTION SAFETY FENCEE-4

TYP.

CONSTRUCTION SAFETY FENCEE-4

TYP.

COFFERDAME-5

TPB-1

TEMPORARY PUMP-AROUND BYPASSE-8

RCE-1

ROCK CONSTRUCTION ENTRANCEE-7

TSC-1

TEMPORARY STREAM CROSSINGE-12

TSC-2

TEMPORARY STREAM CROSSINGE-12

TSC-3

TEMPORARY STREAM CROSSINGE-6

O D

E S

O N

TEMPORARY STAGING AREA

TPB-2

TEMPORARY PUMP-AROUND BYPASSE-8

TYP.

COFFERDAME-5

TYP.

COFFERDAME-5

AsB2

RdB

PeB2

BcAt

PeB2

385385

384.61

LSI BM1 2025

372.17

LSI BM2 2025

MOSER, ERIC LEE

34-026-019

LONDONDERRY TOWNSHIP

34-026-036

HOFFER ROAD

FP100

FP500 FP500

FP500

FP50

FP100FP100

FP100

FP10

FP100

FP500

LOD

EXISTING BUILDING

EXISTING

ENDWALL &

RIPRAP SCOUR

HOLE

LOD

EXISTING

GRAVEL PAD

FS18

FS18 FS18

FS18

OCF

OCF OCF

OCF

O C

OCF

OCF MATCHLINE

0+00

1+00

2+00

LEGEND

EXISTING MAJOR CONTOUR

EXISTING MINOR CONTOUR

EXISTING ROAD RIGHT-OF-WAY (PENNDOT)

EXISTING 500-YEAR FLOODPLAIN (FEMA)

EXISTING 100-YEAR FLOODPLAIN (FEMA)

EXISTING FLOODWAY (FEMA)

EXISTING EDGE OF CHANNEL

EXISTING GUARD RAIL

EXISTING ROAD

EXISTING OVERHEAD ELECTRIC

EXISTING PARCEL LINES (COUNTY GIS)

SOILS

EXISTING TREE LINE

EXISTING WETLAND

BENCHMARK LOCATION

EX-ROW

FP100

OE OE

LOD LOD

HaB

FP500

LIMIT OF DISTURBANCE

PROPOSED TREELINE

PROPOSED MAJOR CONTOUR

PROPOSED MINOR CONTOUR

CONSTRUCTION SAFETY FENCE

PROPOSED FILTER SOCK

PROPOSED SPOT ELEVATION

PROPOSED EROSION CONTROL

MATTING (BIOD-MAT 40)

PROPOSED EROSION CONTROL

MATTING (BIOD-MAT 90)

TEMPORARY STOCKPILE AREA

TEMPORARY STAGING AREA

PROPOSED ROCK

CONSTRUCTION ENTRANCE

PROPOSED TEMPORARY

STREAM CROSSING

PROPOSED TEMPORARY PUMP-AROUND

BYPASS SYSTEM

100.00

LSI BM #

TSC

OCF OCF

FS12 FS12

SCALE:

DATE:

CHECKED BY:

DRAWN BY:

PROJECT NUMBER:

SHEET NUMBER:

REVISIONS

NO. DATE DESCRIPTION

P R

C T:

S H

E E

7-la nd st ud ie s.

co m la nd la nd st ud ie s.

co m

�1 oU tK �6 tU ee t /i tit �3 �1 7�

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SIGNATURE BLOCK

C O

N E

W A

G O

C R

E E

K P

H A

S E

D O

N D

E R

R Y

T O

W N

S H

R S

C H

U R

C H

R O

A D

N , P

0' 40' 80' 120'

SCALE: 1" = 40'

S P

D-131.21-25

01/23/2026

OF 18

1" = 40'

TYP.

CONSTRUCTION SAFETY FENCEE-4

RCE-2

ROCK CONSTRUCTION ENTRANCEE-7

TYP.

COMPOST FILTER SOCKE-2

O D

E S

O N

TEMPORARY STAGING AREA

TEMPORARY STOCKPILE AREA

ROCK FILTER TO BE FIELD

ADJUSTED IF NECESSARY

ROCK FILTER OUTLETE-9

AREA WITHIN LOD SHOWN HERE SHALL

BE CONSIDERED THE WORK AREA FOR

CHECKED BY:

DRAWN BY:

PROJECT NUMBER:

SHEET NUMBER:

REVISIONS

NO. DATE DESCRIPTION

P R

C T:

S H

E E

7-la nd st ud ie s.

co m la nd la nd st ud ie s.

co m

�1 oU tK �6 tU ee t /i tit �3 �1 7�

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C O

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W A

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D O

N D

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S H

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C H

U R

C H

R O

A D

N , P

S D

D-131.21-25

01/23/2026

OF 18

N/A

NOTES:

1. MULTIPLE PIPES AND MULTIPLE SPAN BRIDGES AND CULVERTS WHICH MAY

TEND TO COLLECT DEBRIS, CONTRIBUTE TO THE…

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