HomeMy WebLinkAboutExhibit 10 Technical Memo Mason Street Frontage Improvement1
Mo-chi Lindblad
From:Zac Garrard <ZGarrard@parametrix.com>
Sent:Friday, June 13, 2025 4:58 PM
To:Mo-chi Lindblad; Tim Pula; Bob Collins; Julie Miles
Cc:Darren Sandeno; Eric Kuzma
Subject:RE: PLEASE RESPONSE - RE: SUB2025-00012 - Mason Street Neighborhood - Traffic Responses
Attachments:MSN - Mason Frontage Improvements Update Tech Memo.pdf
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Good afternoon Mo-chi,
Please find the attached memo outlining the Mason Street typical section for the frontage improvements. We’ve
coordinated with Public Works and received general approval of the section.
Let us know if you have any additional questions or comments.
Thank you,
Zac Garrard, EIT
Community Building
503-416-6850 | direct
From: Mo-chi Lindblad <MLindblad@co.jefferson.wa.us>
Sent: Friday, May 30, 2025 4:39 PM
To: Zac Garrard <ZGarrard@parametrix.com>; Tim Pula <tim@capexadvisory.com>; Bob Collins <bob@habitatejc.org>;
Julie Miles <julie@habitatejc.org>
Cc: Darren Sandeno <DSandeno@parametrix.com>
Subject: RE: PLEASE RESPONSE - RE: SUB2025-00012 - Mason Street Neighborhood - Traffic Responses
Thank you all for your prompt response. I've forwarded the memo to PW for review and feedback.
Wishing you all a great weekend.
From: Zac Garrard <ZGarrard@parametrix.com>
Sent: Friday, May 30, 2025 4:30 PM
To: Mo-chi Lindblad <MLindblad@co.jefferson.wa.us>; Tim Pula <tim@capexadvisory.com>; Bob Collins
<bob@habitatejc.org>; Julie Miles <julie@habitatejc.org>
Technical Memorandum
1019 39th Avenue SE, Suite 100 • Puyallup, WA 98374 | 253.604.6600 | Parametrix.com
DATE: June 13, 2025
TO: Jefferson County Public Department of Community Development
FROM: Zac Garrard, EIT
SUBJECT: Mason Street Frontage Improvements Update
CC: Bob Collins, Julie Miles, Tim Pula, Darren Sandeno, Eric Kuzma
PROJECT NUMBER: 217-9085-002
PROJECT NAME: Mason Street Neighborhood
Introduction
The purpose of this memorandum is to provide contextual information for the proposed frontage
improvements along Mason Street as part of Habitat for Humanity of East Jefferson County’s Mason
Street Neighborhood project. It will discuss the existing conditions, the coordination process with
Jefferson County Public Works, and the proposed typical section for the frontage improvements.
Existing Conditions
The Mason Street Neighborhood Project (Project) is a residential subdivision project owned by
Habitat for Humanity of East Jefferson County. The project site is Parcel 901-023-007 in Port
Hadlock-Irondale, Washington in Jefferson County. The site is generally located between the of
Mason Street and Cedar Avenue with these streets abutting the north and east limits of the property.
Cedar Avenue and Mason Street are two-lane local roads within the County’s right-of-way (ROW). The
posted speed limit on these roads is 25 mph.
Cedar Avenue was recently improved with sidewalks, bike lanes, and pedestrian lighting being
installed as part of Jefferson County’s Cedar Avenue & SR 116 Pedestrian/Bike Improvement
project. These facilities align the eastern property line of the Project property in the County ROW.
Mason Street is a rural two-lane road with a paved width varying between 22-26’ – based on
available survey data – with gravel shoulders and drainage ditches aligning the sides of the road
within the ROW, which varies between 55-feet to 80-feet. There are no sidewalks or bike lanes on
either side of the road. There are private driveways and street intersections along Mason Street.
Public Works Coordination
The Project will be required to improve the Mason Street frontage along the northern property line as
part of the development and in compliance with Jefferson County Unified Development Code,
Chapter(s) 18.30.080 and 18.30.090.
Based on the estimated trips generated from Project completion modeled separately for the Traffic
Impact Analysis, Mason Street would meet the 2022 Jefferson County Road Standards for Type 7
DHV > 201 road classification. This roadway section is designed for speeds up to 60 miles per hour
with 12-foot drive lanes and 8-foot paved shoulders.
However, in discussions with Public Works in October 2024 (and prior to the Trip Generation Report),
it was agreed that this typical section, which is intended for rural County Roads, could be modified to
Technical Memorandum
Habitat for Humanity of East Jefferson County 217-9085-002
Mason Street Frontage Improvements Update 2 June 13, 2025
reduce drive lane widths and to provide pedestrian improvements including but not limited to curbs,
sidewalk, and drainage considerations that better aligned with the suburban area in which the
Project is located. The Project team presented an alternative typical section that included on-street
parking in addition to the pedestrian improvements for Public Works consideration.
In a follow-up workshop with Public Works and the Project team in February 2025, Public Works
presented additional guidance on suggested features – including a requirement to accommodate
bicycles. Parametrix prepared two alternatives that addressed elements outlined by Public Works
with varying arrangements of the southern sidewalk and swale from the edge of the on-street
parking stall.
A third coordination workshop occurred June 9, 2025, to refine the typical section for the Mason
Street frontage improvements. The Project Team, Public Works, and County Commissioners
collaborated on a section that balanced key design principles and parameters – safety, multi-modal,
ease of maintenance, drainage improvements, and precedent setting – identified by the group in its
design.
Proposed Typical Section
The proposed Mason Street frontage improvement includes the constructing following elements:
A sidewalk adjacent to the Mason Street Neighborhood
Curb & gutter
On-street parallel parking lanes
Bioretention planters
Bike lane with a buffer area separating on-street parking
Mason Street will be widened along the northern edge in addition to the improvements listed above
where needed to provide two 10-foot drive lanes, 3-foot shoulder, and ditch to complete the road
section within the ROW.
A figure is attached that outlines the proposed dimensions for reference. The bioretention planters
will be installed and replace the on-street parking intermittently to provide stormwater management
for contributing runoff from the roadway impervious surfaces. The cross sections in the figure
distinguish these scenarios.
Conclusion
Following the aforementioned coordination between the Project Team and Public Works, the
proposed typical section for Mason Street was reviewed and accepted by Public Works. This typical
section will be used to develop the construction documents for the frontage improvements along
Mason Street to be constructed in conjunction with the neighborhood development.
Attachments:
Mason Street Typical Section Figure
Public Works Approval Email
MASON STREET TYP. SECTION
HABITAT FOR HUMANITY
MASON STREET
CL
MSN
PROPERTY
LINE
6'
WALK
8'
PARKING
5'
BIKE
10'
DRIVE
10'
DRIVE
6'
DITCHVARIES
55' - 80'
RIGHT-OF-WAY8'5'10'10'2'1'20'6'6'100'9.5'22'
B
-
A
-
18"
BIORETENTION
SOIL MIX
A
-
SECTION
1":40'
MASON STREET WITH PARKING
B
-
SECTION
1":40'
MASON STREET WITH BIORETENTION
2'
SHLDR
0.50'
CURB1'
4:1 (H:V)
4:1 (H:V)
MSN PROPERTY LINE
1.5'
4:1 MAX.
6'
WALK
9.5'
PLANTER
0.50'
CURB
MSN PROPERTY LINE
9" PONDING
BIORETENTION PLANTER
3'3'
BUFFER
CL 5'
BIKE
10'
DRIVE
10'
DRIVE
6'
DITCHVARIES
55' - 80'
RIGHT-OF-WAY
2'
SHLDR
1'
4:1 (H:V)
4:1 (H:V)
1.5'
4:1 MAX.
1.5'
GUTTER
1
Zac Garrard
From:Eric Kuzma <EKuzma@co.jefferson.wa.us>
Sent:Friday, June 13, 2025 1:51 PM
To:Zac Garrard
Cc:Bob Collins; Julie Miles; Darren Sandeno; Tim Pula; Heidi Eisenhour
Subject:RE: Mason Street Typical Section Update
Looks good from our end. Please proceed. Thanks, Eric ________________________________________________________ Eric Kuzm
External email
Looks good from our end. Please proceed.
Thanks,
Eric
________________________________________________________
Eric Kuzma, Deputy Public Works Director
JEFFERSON COUNTY DEPARTMENT OF PUBLIC WORKS
623 Sheridan Street, Port Townsend, WA 98368
360.385.9167 – 360.301.6783 (c)
From: Zac Garrard <ZGarrard@parametrix.com>
Sent: Friday, June 13, 2025 1:44 PM
To: Eric Kuzma <EKuzma@co.jefferson.wa.us>
Cc: Bob Collins <bob@habitatejc.org>; Julie Miles <julie@habitatejc.org>; Darren Sandeno
<DSandeno@parametrix.com>; Tim Pula <tim@capexadvisory.com>; Heidi Eisenhour <HEisenhour@co.jefferson.wa.us>
Subject: RE: Mason Street Typical Section Update
ALERT: BE CAUTIOUS This email originated outside the organization. Do not open attachments or click
on links if you are not expecting them.
Good afternoon Eric,
Thanks for the call and discussion yesterday. Please find the revised section attached with the comments you
provided incorporated. We’ll consider your additional notes as we develop the frontage design further.
Let me know if there are any additional comments. I’m updating the tech memo currently to share with DCD
following your review and feedback on this updated section.
Thanks,
Zac Garrard, EIT
Community Building
2
503-416-6850 | direct
From: Eric Kuzma <EKuzma@co.jefferson.wa.us>
Sent: Thursday, June 12, 2025 6:22 PM
To: Zac Garrard <ZGarrard@parametrix.com>
Cc: Bob Collins <bob@habitatejc.org>; Julie Miles <julie@habitatejc.org>; Darren Sandeno
<DSandeno@parametrix.com>; Tim Pula <tim@capexadvisory.com>; Heidi Eisenhour <HEisenhour@co.jefferson.wa.us>
Subject: RE: Mason Street Typical Section Update
Hi Zac –
Thanks for quickly pulling together the revisions. Below are comments per our conversa Ɵon this aŌernoon:
-Please add a buffer strip between the parallel parking and the bike lane.
-Please make the curb adjacent to the sidewalk, at the planter locaƟons, flush with the top of the sidewalk.
-Please graphically depict the bioretenƟon media sloping to middle to reduce the drop from the perimeter .
-Consider increasing the concrete outlet height of the bioretenƟon faciliƟes to at least the inlet elevaƟon, if not a liƩle
higher, to accommodate more freeboard in a large storm event.
-Recommend sloping sidewalk away from road thus reducing the impervious area and associated bioretenƟon facility
size.
-Consider the necessity of an underdrain, or similar, in at least the most downstream bioreten Ɵon facility.
-Consider the locaƟon of the proposed cross secƟon within the exisƟng right-of-way relaƟve to the exisƟng road crown.
Is their value in placing the exisƟng crown at the edgeline locaƟon rather than a centerline? This could potenƟally: beƩer
center the road within the right-of-way, reduce the impervious area and associated bioretenƟon size, and, provide more
room to accommodate the proposed cross secƟon enƟrely within the right-of way?
-Consider bioretenƟon maintenance. Since the bioretenƟon areas will be managing road stormwater the County will
accept maintenance responsibility. That being said, our maintenance capacity is limited to mowing/weedwacking. If
anything other than grass is planted, it will unfortunately be mowed down. AlternaƟvely, plants would be much more
aƩracƟve, and if chosen wisely for the limited bioretenƟon surface area, may not require a significant investment in
private maintenance?
Immediate next steps:
-Parametrix will check in with the Habitat team and discuss revision of the cross sec Ɵon to address the first three items
above.
-Parametrix will revise the cross sec Ɵon accordingly and resend to the group tomorrow morning.
-If Habitat and the County concur with the revised cross secƟon, Parametrix will draŌ a brief memo to DCD replacing the
previous Technical Memo with a recommendaƟon of the updated cross secƟon.
-Public Works will draŌ a response to DCD concurring with the revised cross secƟon in advance of the SEPA deadline.
Make sense?
Thanks,
Eric
________________________________________________________
Eric Kuzma, Asst. Public Works Director / Eng. Services Manager
JEFFERSON COUNTY DEPARTMENT OF PUBLIC WORKS
623 Sheridan Street, Port Townsend, WA 98368
360.385.9167 – 360.301.6783 (c)
3
From: Zac Garrard <ZGarrard@parametrix.com>
Sent: Thursday, June 12, 2025 4:17 PM
To: Eric Kuzma <EKuzma@co.jefferson.wa.us>
Cc: Bob Collins <bob@habitatejc.org>; Julie Miles <julie@habitatejc.org>; Darren Sandeno
<DSandeno@parametrix.com>; Tim Pula <tim@capexadvisory.com>
Subject: Mason Street Typical Section Update
ALERT: BE CAUTIOUS This email originated outside the organization. Do not open attachments or click
on links if you are not expecting them.
Afternoon Eric,
Please find the figure with the parking and/or bioretention planter sections for the Mason Street frontage
improvements attached for your review.
After preparing a preliminary stormwater model, for every 100 LF of half-street improvements – 10’ drive lane, 5’
bike lane, 8’ parking, 6’ sidewalk – a bioretention planter with an approximate 230 SF internal footprint will
infiltrate contributing runoƯ to it. A 6.5’ x 35’ internal planter area would be a typical size. This considers the
concrete formwork of the planter walls/thickened gutter pan fitting within the 8’ width of a typical parking space
and around the internal planter space. We’ll develop the exact size, spacing, and location of the planters after
you’ve reviewed and approved our approach.
Also, let us know if you’d consider removing the sidewalk from the contributing area to the planters for our
modeling. We’ve had mixed guidance with municipalities including/excluding in the sidewalks in the tabulation
since it is not a pollution generating hard surface. Your input is appreciated.
Give me a call if you have any quick questions we can address.
Thanks,
Zac Garrard, EIT
Engineer III
503-416-6850 | direct