HomeMy WebLinkAboutCOM2009-00082, 00083 stormwater plan checklist - COM Application - 8/18/2009 ky)
Mason County Review ChecklisN -0
For a Stormwater Plan
Instructions:
This checklist is intended to assist Staff in the review of a Stormwater Plan. The Stormwater Plan is
reviewed for completeness with respect to the 1992 Department of Ecology Manual. If an item is found to
be not applicable, the Plan should explain the basis for the conclusion. The Plan is also reviewed for
clarity and consistency. If the drawings, discussion, or recommendations are not understandable, they
should be clarified. If they do not appear internally consistent or consistent with the application or
observations on site, this needs to be corrected or explained. If resolution is not achieved with the author,
staff should refer the case to the Planning Manager or Director.
Applicant's Name: P 9 TIC"(yie-S
Permit# ( W woo (2, Parcel# ?x0 q—q 3-2 OV 2
p �
Date(s) of the Document(s) reviewed: /g /700i
�( �C) l
(1) Erosion and Sediment Control:All new development and redevelopment that includes land disturbing
activities of one acre or greater shall comply with erosion and sediment control requirements 1-14,
below. Compliance with the Erosion and Sediment Control Requirements shall be demonstrated through
implementation of a large parcel erosion and sediment control plan.
All new development and redevelopment that includes land disturbing activities of less than one acre
shall comply with the small parcel minimum requirements found in Section 14.48.130, Compliance with
the small parcel requirements shall be demonstrated through implementation of a small parcel erosion
and sediment control plan.
(a) Erosion a Sediment Control Requirement 1: Stabilization and Sediment Trapping.
OK? Comment:
(b) Erosion �hd Sediment Control Requirement#2: Delineate Clearing and Easement Limits.
OK? ✓ Comment:
(c) Erosion arse! Sediment Control Requirement#3: Protection of Adjacent Properties.
OK? �/ Comment:
(d) Erosion and Sediment Control Requirement#4: Timing and Stabilization of Sediment Trapping
Measures
OK? Comment:
(e) Erosion anOlSediment Control Requirement#5: Cut and Fill Slopes.
OK? Comment:
(f) Erosion d Sediment Control Requirement#6: Controlling Off-Site Erosion.
OK? Comment:
(g) Erosion and Sediment Control Requirement#7: Stabilization of Temporary Conveyance Channels
and Outlet.
OK? ✓ Comment:
(h) Erosion a Sediment Control Requirement#8: Storm Drain Inlet Protection.
OK? Comment:
(i) Erosion ard-Sediment Control Requirement#9: Underground Utility Construction.
OK? V Comment:
(j) Erosion�rfd Sediment Control Requirement#10: Construction Access Routes.
OK? Comment:
(k) Erosio3n Od Sediment Control Requirement#11: Removal of Temporary BMPs.
OK? Comment:
(1) ErosioVXnd Sediment Control Requirement#12: Dewatering Construction Sites.
OK? Comment:
Page 1 Form Effective May 2009
(m) Erosion and Sediment Control Requirement#13: Control of Pollutants Other than Sediment on
Construct' Sites.
OK? Comment:
(n) Erosio an Sediment Control Requirement#14: Maintenance.
OK? Comment:
(o) Erosion arSediment Control Requirement#15: inancialj;iability. n
OK? ✓ Comment: SL vA v, V-e nSn �o1,n
(2) Preservation of Natural Drainage Systems. Natural drainage patterns shall be maintained, and
discharges om the site shall occur at the natural location to the maximum extent practicable.
OK? Comment:
(3) Source Control of Pollution. Source control BMPs shall be applied to all projects to the maximum
extent practicable. Source control BMPs shall be selected, designed, and maintained according to an
approved nual.
OK?Comment:
(4) Runoff Treatment BMPs. All projects shall provide treatment of stormwater. Treatment BMPs shall be
sized to capture and treat the water quality storm, defined as the six-month, twenty-four hour storm. The
first priority for treatment of stormwater shall be to infiltrate as much as possible of the water quality
design storm to the ground. Pretreatment of stormwater prior to infiltration into the ground may be
required
OK? ✓✓✓ Comment:
(5) Streambank Erosion Control: The requirement below applies only to situations where stormwater
runoff is disc rged directly or indirectly to a stream, and must be met in addition to meeting the
requirem s in minimum reqent#4, Runoff Treatment BMPs.
OK? Comment:
(6) Wetlands: Stormwater discharges to wetlands shall maintain the wetland's natural hydroperiod and
flows to the extent needed to preserve or enhance its existing functions and values. Prior to proposing
discharge of higher volumes of stormwater to a wetland, alternative discharge, detention, and infiltration
practices loc ed in areas outside the wetland shall be evaluated and employed by the project engineer
where fe le and practicable.
OK? Comment:
(7) Water Quality Sensitive Areas. Where the Mason County commissioners or their designee determine
that the minimum requirements do not provide adequate protection of water quality sensitive areas,
either on-site or within the basin, more stringent controls shall be required to protect water quality. An
adopted and i plemented basin plan (minimum requirement#9) may be used to develop requirements
for water q ity sensitive areas that are tailored to a specific basin.
OK? Comment:
(8) Off-Site Analysis and Mitigation. Downstream analysis may trigger additional requirements. The
project engineer shall provide a detailed qualitative analysis of the flow path of the discharge from the
project site to the receiving water. This requirement shall apply to all projects where a drainage and
erosion control plan is prepared, including those proposing retention facilities. This analysis shall include
flow routing, and provide existing pipe and channel sizes and estimated capacities. In addition, the
project engineer shall discuss any known or expected downstream erosion, flooding, or water quality
problems, including those that may be caused by interflow from the proposed retention facility. The
director or designee shall have the discretion to specify the distance and level of detail to be provided by
the project engineer. In making this determination, the director or designee shall consider such factors
as the r>ex
e ize of the new development, availability of other hydrologic work for the drainage area,
and thet ofwhich stormwater generated on the project site is to be infiltrated.
OK? Comment:
(9) Basin Plarming. Basin plan supersedes Manual.
OK? Comment:
Page 2 Form Effective May 2009
T
(10)OPeration and Maintenance. An operation and maintenance schedule shall be provided for all
proposed stormwater facilities and BMPs, and the party (or parties) responsible for maintenance and
operation shall be identified. An operation and maintenance (O&M) Declaration of Covenant will be
required to cover all privately owned and maintained stormwater facilities. O&M Declaration of
Covenant forms are available at the Mason County Permit Assistance Center, 426 W. Cedar Street,
Shelton, WA 98584. The proponent shall record a copy of the completed Declaration with the Mason
County Auditors' office.A copy of the recorded document must be submitted to the Permit Assistance
Center together with this completed Checklist.
OK? Comment:
Are the Documents signed and stamped?
Type and#of License: T E 3 "l Ll D
If not approved, what is the next action/recommendation for further action?
Reviewed by ����C�L�t 1).0�?il _ _ on
Time spent in review: (
SECOND REVIEW/UPDATE:
Reviewed by on
Time spent in second review:
THIRD REVIEW/ UPDATE:
Reviewed by on
Time spent in third review:
Disclaimer: Mason County does not certify the quality of the work done in this Stormwater Plan.
Page 3 Form Effective May 2009
Mason Counry Stormwater Checklist
County Project #
Project Name
Twnsp,Sec,Range zvN
Minimum Requirements of 1992 Stormwater Manual
The stormwater checklist identifies the minimum requirements of the 1992 Stormwater
Manual. The checklist is intended to identify the locations within the plan that addresses
the minimum requirements. Mason County will not perform a technical evaluation of the
submittal. Rather, the checklist provides a guide to allow Mason County to review the
submittal and determine if the applicant has addressed the minimum features that make
up a stormwater plan.
It is incumbent upon the applicant and his/her engineer to fulfill all the applicable
requirements of the 1992 Stormwater Plan as it relates to the proposed project. Review
by Mason County is intended to determine if the plan has addressed the minimum
requirements and should not be considered a review for technical accuracy of the plan.
During construction of the project, the stormwater plan engineer of record or his/her
authorized representative shall inspect the site to ensure the stormwater plan is being
implemented as designed. Upon completion of the project, the engineer or his authorized
representative shall be required to certify that the stormwater plan has been implemented
as designed.
Failure to meet the minimum requirements could result in delay or rejection of the
application until the deficiencies are corrected.
[J41: Erosion and Sediment Control. All new development and redevelopment that includes
land disturbing activities of one acre or greater shall comply with erosion and sediment control
requirements 1 through 14, below. Compliance with the Erosion and Sediment Control
Requirements shall be demonstrated through implementation of a large parcel erosion and
sediment control plan.
All new development and redevelopment that includes land disturbing activities of less than one
acre shall comply with the small parcel minimum requirements found in Section 14.48.130,
Compliance with the small parcel requirements shall be demonstrated through implementation of
a small parcel erosion and sediment control plan.
Erosion and Sediment Control Requirement#1: Stabilization and Sediment Trapping.
See page/paragraph _> >
Erosion and Sediment Control Requirement#2: Delineate Clearing and Easement Limits.
See page/paragraph S d,e r f 2 . L. I 1'ig ,
Erosion and Sediment Control Requirement#3: Protection of Adjacent Properties.
See page/paragraph PA ti Q
1
Erosion and Sediment Control Requirement#4: Timing and Stabilization of Sediment
Trapping Measures.
See page/paragraph A Q : " z lc r t-
Erosion and Sediment Control Requirement#5: Cut and Fill Slopes. p
See page/paragraph (,"u te-141 n b a -, 1+' C,✓.1 1 �tinS
Erosion and Sediment Control Requirement#6: Controlling Off-Site Erosion.
See page/;aragraph 1_'L - S Ifi ,« ne- ;h� t ? ( "-( (/�
Erosion and Sediment Control Requirement#7: Stabilization of Temporary Conveyance
Channels and Outlets.
See page/paragraph ti/,q
Erosion and Sediment Control Requirement#8: Storm Drain Inlet Protection.
See page/paragraph Sheef 3 0 C. ( PJAAs rr^k Pt ' O [ 6I,q
Erosion and Sediment Control Requirement#9: Underground Utility Construction.
See page./paragraph kte_-J' P. s J �_, z (/',
Erosion and Sediment Control Requirement#10: Construction Access Routes.
See page/paragraph _S!,e e r .3 , C: I /<,, ;
Erosion and Sediment Control Requirement#11: Removal of Temporary BMPs.
See page/paragraph _O,,�e s
Erosion and Sediment Control Requirement#12: Dewatering Construction Sites.
See page/paragraph S'he e_+ I o T ( hl-,; s
Erosion and Sediment Control Requirement#13: Control of Pollutants Other than
Sediment on Construction Sites.
See page/paragraph j
Erosion and Sediment Control Requirement#14: Maintenance.
See page/paragraph Pan e , t .��,
Erosion and Sediment Control Requirement#15: Financial liability.
See page/paragraph e<- 1 S o ��; '��, ,e /2ra,)rT
Q#2: Preservation of Natural Drainage Systems. Natural drainage patterns shall be
maintained, and discharges from the site shall occur at the natural location to the maximum
extent practicable.
See page/paragraph k)44 - Lo k^n,�- ex. 0( 'I tie r,Is
E#3: Source control of Pollution. Source control BMPs shall be applied to all projects to the
maximum extent practicable. Source control BMPs shall be selected, designed, and maintained
according to an approved manual.
See page/paragraph
EJ#4: Runoff Treatment BMPs.All projects shall provide treatment of stormwater. Treatment
BMPs shall be sized to capture and treat the water quality storm, defined as the six-month,
2
,
twenty-four hour storm. The first priority for treatment of stormwater shall be to infiltrate as much
as possible of the water quality design storm into the ground. Pretreatment of stormwater prior to
infiltration into the ground may be required.
See page/paragraph P<,�e s 1 + 2- .( A0 n,
#5: Streambank Erosion Control.The requirement below applies only to situations where
stormwater runoff is discharged directly or indirectly to a stream, and must be met in addition to
meeting the requirements in minimum requirement#4, Runoff Treatment BMP's.
See page/paragraph ,c.4.4 - ti, LA s 7.
V
D#6:Wetlands.Stormwater discharges to wetlands shall maintain the wetland's natural
hydroperiod and flows to the extent needed to preserve or enhance its existing functions and
values. Prior to proposing discharge of higher volumes of stormwater to a wetland, alternative
discharge, detention, and infiltration practices located in areas outside the wetland shall be
evaluated and employed by the project engineer where feasible and practicable.
See page/paragraph i=
D#7:Water Quality Sensitive Areas. Where the Mason County commissioners or their
designee determine that the minimum requirements do not provide adequate protection of water
quality sensitive areas, either on-site or within the basin, more stringent controls shall be required
to protect water quality.An adopted and implemented basin plan(minimum requirement#9)may
be used to develop requirements for water quality sensitive areas that are tailored to a specific
basin.
See page/paragraph
E]#8: Off_-Site Analysis and Mitigation. Downstream Analysis May Trigger Additional
Requirements.The project engineer shall provide a detailed qualitative analysis of the flow path
of the discharge from the project site to the receiving water. This requirement shall apply to all
projects where a drainage and erosion control plan is prepared, including those proposing
retention facilities. This analysis shall include flow routing, and provide existing pipe and channel
sizes and estimated capacities. In addition, the project engineer shall discuss any known or
expected downstream erosion,flooding, or water quality problems, including those that may be
caused by interflow from the proposed retention facility. The director or designee shall have the
discretion to specify the distance and level of detail to be provided by the project engineer. In
making this determination, the director or designee shall consider such factors as the relative size
of the new development, availability of other hydrologic work for the drainage area,and the extent
to which stormwater generated on the project site is to be infiltrated.
See page/paragraph _til? ��c 'i� k SID�w,
#9: Basin Planning. Basin plan supersedes Manual
See page/paragraph — ,1,4
D*10: Operation and Maintenance. An operation and maintenance schedule shall be provided
for all proposed stormwater facilities and BMPs, and the party(or parties)responsible for
maintenance and operation shall be identified. An operation and maintenance (O&M)covenant
will be required to cover all privately owned and maintained stormwater facilities approved by the
director. O&M Covenant forms are available at the Mason County public works office. A copy of
the completed instrument shall be recorded with the county auditors' office by the proponent and
a copy of the recorded instrument is required to be submitted to the public works department prior
to final approval of the completed permanent stormwater facilities.
3
Seepage/paragraph
2t#11: Financial Liability. Performance bonding,or other appropriate instruments shall be
required for all projects to ensure compliance with these standards.
See pagelparagraph l S �r ��. 5 r Ae o ,l--—
E^
I certify that the stormwater plan submitted for this project fulfills the applicable
provisions of the 1992 Stormwater Manual.
WAsy� 9
Engineer Date
401
¢ISTER �\
Applicant Date `TONAL E�
4
t
Johns Prairie Business Park
Phase I
Mason County, WA
Final Drainage Report
July 2009
OLYMPIC
ENGINEERING
Prepared by: 300 Deschutes Way SW
Suite 315
Tumwater WA 98501
360.705.2474
360.705.2443 fax
www.olyeng.com
FINAL DRAINAGE REPORT
Mason County, Washington
July 2009
Project Information
Project: Johns Prairie Business Park- Phase I
Prepared for: DB Industries LLC
Contact: Dave Mariano
13 SE Skookum View Drive
Shelton, WA 98584
(360) 701-6623
Reviewing Agency
Jurisdiction: Mason County
Project Number:
Project Contact:
Project Engineer
Prepared by: Olympic Engineering
300 Deschutes Way SW, Suite 315
Tumwater, WA 98501
(360) 705-2474 FAX(360) 705-9361
www.olyeng.com
Contact: Chris M. Merritt, PE
OE Project No.: 06039A
File Name: 06039A fdr.doc
OQ kER M.
of W A Sy,�tt► PROJECT ENGINEER'S CERTIFICATION: I hereby certify that this
Final Drainage Report for the Johns Prairie Business Park Phase I
y _ project in Mason County,Washington has been prepared by me or under
my supervision and meets the intent of the WSDOE 1992 Stormwater
9
Management Manual,unless noted otherwise,and normal standards of
FGrgT�EiE� Q� engineering practice.I understand that the jurisdiction does not and will
NAL.��V not assume liability for the sufficiency,suitability,or performance of
drainage facilities designed for this development.
1
l .
Table of Contents
APPENDICES
PART I STORM DRAINAGE REPORT........................................................I Appendix 1-Final Drainage Calculations
Appendix 2-Vicinity Map
SECTION 1- PROPOSED PROJECT DESCRIPTION...............................1 Appendix 3-Drainage Basin Map
SECTION 2- EXISTING CONDITIONS.....................................................2 Appendix 4- Soils Report
SECTION 3- INFILTRATION RATES/SOILS REPORT..........................2
SECTION 4- WELLS AND SEPTIC SYSTEMS.........................................2
SECTION5- FUEL TANKS........................................................................3
SECTION 6- SUB-BASIN DESCRIPTION.................................................3
SECTION 7- ANALYSIS OF 100-YEAR FLOOD.......................................3
SECTION 8- AESTHETIC CONSIDERATIONS FOR FACILITIES.........3
SECTION 9- DOWNSTREAM ANALYSIS.................................................3
SECTION 10-COVENANTS,DEDICATIONS,EASEMENTS...................3
SECTION 11-ARTICLES OF INCORPORATION.......................................3
PART II EROSION'CONTROL REPORT....................................................5
SECTION 1- CONSTRUCTION SEQUENCE AND PROCEDURE..........5
SECTION 2- TRAPPING SEDIMENT........................................................5
SECTION 3- PERMANENT EROSION CONTROL...................................6
SECTION 4- GEOTECHNICAL ANALYSIS AND REPORT.....................6
SECTION 5- INSPECTION SEQUENCE...................................................6
SECTION 6- CONTROL OF POLLUTANTS..............................................7
PART III MAINTENANCE PLAN................................................................8
SECTION 1- REQUIRED MAINTENANCE...............................................8
SECTION 2- RESPONSIBLE ORGANIZATION......................................15
SECTION 3- VEGETATION MANAGEMENT PLAN..............................15
SECTION 4- SOURCE CONTROL............................................................15
:t
ii
PART I STORM DRAINAGE REPORT
SECTION 1 -PROPOSED PROJECT DESCRIPTION
Prepared for: DB Industries, LLC
Contact: Dave Mariano
13 SE Skookum View Drive
Shelton, WA 98584
(360) 701-6623
Parcel Number: 32004490025
Total Site Area: 1.45 Acres
Zoned: Industrial
Site Address: 3160 John's Prairie Road
Shelton, WA 98584
Required Permits: Grading, Utility, Building, etc.
Section, Township, Range: Section 4
Township 20 North
Range 3 West, W.M.
Project Overview
The project site is located on the south side of John's Prairie Road in Shelton, WA.
The applicant proposes to construct two 5,940 square foot buildings with associated
parking, water, sanitary sewer, and storm drainage improvements.
The development will be constructed in one phase. Construction will include
clearing and grading of the site, storm drainage improvements, an on-site septic
system, a community water system, and parking lot construction.
Proposed stormwater facilities will consist of proposed biofilter strips for storm
water treatment which drains to an underground drainrock infiltration gallery for
retention and infiltration of stormwater runoff. For stormwater design purposes,
the proposed development has been subdivided into one drainage sub-basin (see
basin map in Appendix 3).
1
Stormwater Treatment:
Proposed biofilter strips located in the center of the proposed main drive aisle will
provide all treatment for stormwater runoff. All runoff from the drive aisles and
parking areas will sheet flow to the biofilter strips for treatment prior to infiltration.
The proposed biofilter strips exceed the minimum WSDOE requirements for flow
depth, velocity, and residence time. See the biofilter strip calculations in Appendix
1.
Stormwater Storage:
All stormwater generated by the proposed development will discharge to an
underground drainrock infiltration gallery located beneath the biofilter area. The
proposed stormwater storage facility exceeds the minimum storage requirements
per the WSDOE. See Final Drainage Calculations in Appendix 1.
Roof Runoff:
Roof runoff from each building will be tightlined to the underground detention
facility (see plan).
SECTION 2 -EXISTING CONDITIONS
Site vegetation consists of a conifer tree grove located on the south end of the project
site. The project site is bounded by John's Prairie Road to the north, and
commercial/industrial property to the east, south, and west.
See Section 6 for description of off-site drainage to the property, if any.
SECTION 3 -INFILTRATION RATES / SOILS REPORT
The Natural Resource Conservation Service (NRCS) soil survey of Mason County
classifies the on-site soils as Carstairs Gravelly Loam (Hydrologic Group B). Soil
testing confirmed the Carstairs series classification.
Two test pits were excavated by backhoe to a maximum depth of 144"below existing
grade and two falling head infiltration tests were completed. A 20"/hr rate will be
used for design. Test pit soil log data sheets and infiltration test results are
included in the Appendix of this report.
SECTION 4 WELLS AND SEPTIC SYSTEMS
No wells within 200-feet of the project boundaries were found during a site
investigation.
Water and sanitary sewer services for the proposed project will be provided by
2
community water and septic systems.
SECTION 5 -FUEL TANKS
No fuel tanks were located during a site inspection or soils work. The latest "LUST"
list (Leaking Underground Storage Tank) was reviewed and no listing for the
subject site was found.
SECTION 6 - SUB-BASIN DESCRIPTION
From our site visit there were no signs of existing drainage swales or channels on
the proposed property. There did not appear to be a significant amount of off-site
runoff onto the site from the adjacent west, east, and south properties.
Hazardous material handling or transportation is not expected in the area tributary
to the on-site detention facility.
SECTION 7 -ANALYSIS OF 100-YEAR FLOOD
Upon inspection of FEMA Flood Insurance Rate Maps, the proposed development
does not lie within a 100-year flood plain.
SECTION 8 -AESTHETIC CONSIDERATIONS FOR FACILITIES
All disturbed pervious areas including the storm drainage area and area around
buildings will be vegetated and landscaped.
SECTION 9 -DOWNSTREAM ANALYSIS
Final calculations for the project stormwater treatment and storage systems are
included in the Appendix of this report.
All stormwater runoff generated by site development will be treated, stored, and
infiltrated on-site. In the event of failure, storm water will overflow into the
biofilter strip and eventually onto the drive aisles. Adjacent properties should not
be affected due to failure of the proposed stormwater system.
SECTION 10 -COVENANTS, DEDICATIONS, EASEMENTS
On-site drainage facilities will require routine maintenance. A maintenance
agreement will be prepared and finalized prior to final project approval.
SECTION 11 -PROPERTY OWNERS ASSOCIATION ARTICLES OF INCORPORATION
Special covenants covering landscape, maintenance, signage, stormwater and site
maintenance will be put in place prior to final project approval. The Owner's and/or
3
their representatives will perform maintenance of these private storm drainage
facilities.
4
PART II EROSION CONTROL REPORT
SECTION 1 -CONSTRUCTION SEQUENCE AND PROCEDURE
Proposed development of the subject property will include site grading and erosion
control measures designed to contain silt and soil within the project boundaries
during construction until permanent erosion control is in place.
Erosion/sedimentation control will be achieved by a combination of
structural/vegetative cover measures and construction practices tailored to fit the
site.
Best Construction Management Practices (BMP's) will be employed to properly clear
and grade the site and to schedule construction activities. Before any construction
begins on-site, erosion control facilities shall first be installed. The planned
construction sequence is as follows:
1. Install rock construction entrance. Use 4" to 8" diameter spalls with 12"
minimum depth.
2. Install filter fabric fencing, where appropriate.
3. Construct temporary sedimentation basins, if necessary.
4. Clear site (grubbing and rough grading).
5. During November 1 through March 31, all disturbed areas greater than 5,000 sf
that are to be left un-worked for more than twelve (12) hours, shall be stabilized
by one of the following: mulch, sodding, or plastic covering.
6. Install underground utilities (cable, telephone, power, etc.).
7. If applicable, provide catch basin protection by installing filter fabric in all inlets
to drainage system.
8. After paving is complete, install landscape, sod and/or seed, and mulch all
disturbed areas.
9. Maintain all erosion control facilities until the entire site is stabilized and silt
runoff ceases.
10. Designate an area for washing of equipment and concrete trucks to control the
runoff and eliminate entry into storm drainage systems.
11. Flush the storm system upon completion of construction but prior to connection
to the wetvault and biofiltration swale. The biofiltration swale shall be
protected from construction runoff.
SECTION 2 -TRAPPING SEDIMENT
A stabilized construction entrance shall be installed at the entrance to the proposed
project to prevent vehicles from tracking soil away from the disturbed areas. If
sediment is tracked onto public roadways, sediment shall, on a daily basis, be swept
or shoveled from paved surfaces and not washed down into the roadside storm
drainage system.
5
The contractor shall not be allowed to leave disturbed areas greater than 5,000 sf
that are to be left un-worked for more than twelve (12) hours uncovered during the
rainy season from November 1 through March 31. Mulch, sodding or plastic
covering will be used to prevent erosion in these areas.
During construction, the contractor will also be required to install filter fabric fencing
as needed, per the erosion control plan and as directed by the engineer, or County
Inspector
SECTION 3 -PERMANENT EROSION CONTROL & SITE RESTORATION
All disturbed areas will be paved, covered with a building or landscaped with grass,
shrubbery or trees.
SECTION 4 -GEOTECHNICAL ANALYSIS AND REPORT
There are no slopes exceeding 15% on-site, therefore, a geotechnical analysis was
deemed unnecessary.
SECTION 5 -INSPECTION SEQUENCE
In addition to the normal County inspections, the Project Engineer shall inspect the
facilities related to storm water treatment, erosion control, storage and conveyance
during construction. At a minimum, the following items shall be inspected at the
time specified:
1. The erosion control facilities shall be inspected before the start of clearing and
grading to ensure the following structures are in place:
a. Construction Entrance
b. Silt Fences
2. The conveyance systems will be inspected after construction of the facility, but
before the project is completed to ensure the following are in working order:
a. Biofilter Strips
b. Infiltration Gallery
3. The permanent site restoration measures should be inspected after
landscaping is completed.
6
SECTION 6 -CONTROL OF POLLUTANTS OTHER THAN SEDIMENTS
Washout from a concrete truck shall not be dumped into the storm drain, or onto soil
or pavement, which carries stormwater runoff. It can be dumped into a designated
area to be later backfilled or hardened and broken up for disposal into a dumpster.
The Contractor will be required to designate a wash down area for equipment and
concrete trucks.
7
PART III MAINTENANCE PLAN
SECTION 1 -REQUIRED MAINTENANCE
The following pages contain maintenance needs for most of the components that are
part of your drainage system, as well as for some components that you may not have.
Let us know if there are any components that are missing from these pages. Ignore the
requirements that do not apply to your system. You should plan to complete a checklist
for all system components on the following schedule:
1. Monthly from November through April.
2. Once in late summer(preferably September).
3. After any major storm(use 1"in 24 hours as a guideline)items marked"S"only.
Using photocopies of these pages, check off the problems you looked for each time you
did an inspection. Add comments on problems found and actions taken. Keep these
"Checked" sheets in your files, as they will be used to write your annual report (due in
May). Some items do not need to be looked at every time an inspection is done. Use the
suggest frequency at the left of each item as a guideline for your inspection.
You may call the jurisdiction for technical assistance. Please do not hesitate to call,
especially if you are unsure whether a situation you have discovered may be a problem.
8
ATTACHMENT `A'
MAINTENANCE PROGRAM
COVER SHEET
Inspection Period:
Number of Sheets Attached:
Date Inspected:
Inspector's Signature:
9
ATTACHMENT"A": MAINTENANCE PROGRAM
Maintenance Checklist for Grounds (Landscaping)
Frequency Drainage J Problem Conditions to Check For Conditions That Should Exist
System
Feature
M General J Weeds Weeds growing in more than Weeds present in less than 5%of
(nonpoisonous) 20%of the landscaped area the landscaped area.
(trees and shrubs only).
Safety hazard Any presence of poison ivy or No poisonous vegetation or
other poisonous vegetation or insect nests present in
insect nests. landscaped area.
Ni S J Trash or litter See Ponds Checklist. See Ponds Checklist.
Erosion of Noticeable rills are seen in Causes of erosion are identified
Ground Surface landscaped areas. and steps taken to slow
down/spread out the water.
Eroded areas are filled,
contoured,and seeded.
1 Trees and Damage Limbs or parts of trees or Trim trees/shrubs to restore
shrubs shrubs that are split or shape. Replace trees/shrubs
broken which affect more with severe damage.
than 25%of the total foliage
of the tree or shrub.
M Trees or shrubs that have Replant tree,inspecting for
been blown down or knocked injury to stem or roots. Replace
over. if severely damaged.
A J Trees or shrubs which are Place stakes and rubber-coated
not adequately supported or ties around young trees/shrubs
are leaning over,causing for support.
exposure of the roots.
If you are unsure whether a problem exists,please contact the Jurisdiction and ask for technical assistance.
Comments:
Key
A=Annual(March or April preferred)
M=Monthly(see schedule)
S=After major storms
10
ATTACHMENT"A" (CONTINUED)
Maintenance Checklist for Ponds and Infiltration Areas
Freq. Drainage J Problem Conditions to Check ForfR
nditions That Should Exist
System
Feature
M.S. General 4 Trash&debris Dumping of yard wastesmove trash and debris and
buildup in pond such as grass clippings andpose as prescribed by Countybranches into basin. aste Management SectionUnsightly accumulation of
non-degradable materials
such as glass,plastic,metal
foam,and coated paper.
M.S. Trash rack Bar screen over outlet more Replace screen. Remove trash
plugged or than 25%covered by debris and debris and dispose as
missing or missing. prescribed by County Waste
Management Section.
M Poisonous Any poisonous vegetation Remove poisonous vegetation.
vegetation which may constitute a Do not spray chemicals on
hazard to the public. vegetation without obtaining
Examples of poisonous guidance from the Cooperative
vegetation include:tansy Extension Service and approval
ragwort,poison oak, from the County.
stinging nettles,devilsclub
M.S. 4 Fire hazard or Presence of chemicals such Find sources of pollution and
pollution as natural gas,oil,and eliminate them. Water is free
gasoline,obnoxious color, from noticeable color,odor,or
odor,or sludge noted. contamination.
M 4 Vegetation not For grassy ponds,grass For grassy ponds,selectively
growing or is cover is sparse and weedy thatch,aerate,and reseed ponds.
overgrown or is overgrown. For Grass cutting unnecessary unless
wetland ponds,plants are dictated by aesthetics. For
sparse or invasive species wetland ponds,hand-plant
are present. nursery-grown wetland plants in
bare areas. Contact the
Cooperative Extension Service
for direction in invasive species
such as purple looseime and reed
canary grass. Pond bottoms
should have uniform dense
coverage of desired plant species.
M v Rodent holes Any evidence of rodent Rodents destroyed and dam or
holes if facility is acting as berm repaired. Contact the
a dam or berm,or any Thurston County Health Dept.
evidence of water piping for guidance.
through dam or berm via
rodent holes.
M Insects When insects such as wasps Insects destroyed or removed
and hornets interfere with from site. Contact Cooperative
maintenance activities,or Extension Service for guidance.
when mosquitoes become a
nuisance.
A Tree Growth Tree growth does not allow Trees do not hinder maintenance
maintenance access or activities. Selectively cultivate
interferes with maintenance trees such as alders for firewood.
activity(i.e.,slope mowing,
silt removal,orequipment
11
Freq. Drainage Problem Conditions to Check For Conditions That Should Exist
System
Feature
movements). If trees are
not interfering with access,
leave trees alone.
M Side slopes of Erosion on Check around inlets and Find causes of erosion and
pond berms or at outlets for signs of erosion. eliminate them. Then slopes
entrance/ Check berms for signs of should be stabilized by using
exit sliding or settling. Action appropriate erosion control
is needed where eroded measure(s);e.g.,rock
damage over 2 inches deep reinforcement,planting of grass,
and where there is potential compaction.
for continued erosion.
M Storage area Sediment Accumulated sediment that Sediment cleaned out to designed
buildup in pond exceeds 10%of the pond shape and depth;pond
designed pond depth. reseeded if necessary to control
Buried or partially buried erosion.
outlet structure probably
indicates significant
sediment deposits.
A Pond dikes I Settlements Any part of dike which has Dike should be built back to the
settled 4 inches lower than design elevation.
the design elevation.
A Emer-gency J Rock missing Only one layer of rock Replace rocks to design
overflow/ exists above native soil in standards.
spillway area 5 square feet or larger,
or any exposure of native
soil.
One time Emer-gency Overflow Side of pond has no area Contact County for guidance.
overflow/ missing with large rocks to handle
spillway emergency overflows.
If you are unsure whether a problem exists,please contact the Jurisdiction and ask for technical assistance.
Comments:
Key: A=Annual(March or April preferred)
M=Monthly(see schedule)
S=After major storms
12
ATTACHMENT"A" (CONTINUED)
Maintenance Checklist for Infiltration Systems
Frequency Drainage J Problem Conditions to Check For Conditions That Should Exist
System
Feature
M,S General Trash&debris See Maintenance Checklist for See Maintenance Checklist for
buildup in Ponds. Ponds.
pond
M Poisonous See Maintenance Checklist for See Maintenance Checklist for
vegetation Ponds. Ponds.
M,S Fire hazard or See Maintenance Checklist for See Maintenance Checklist for
pollution Ponds. Ponds.
n1 Vegetation not See Maintenance Checklist for See Maintenance Checklist for
growing or is Ponds. Ponds.
overgrown
b1 Rodent holes See Maintenance Checklist for See Maintenance Checklist for
Ponds. Ponds.
M Insects See Maintenance Checklist for See Maintenance Checklist for
Ponds. Ponds.
1 Storage J Sediment A soil texture test indicates Sediment is removed and/or
area buildup in facility is not working at its facility is cleaned so that
system designed capabilities or was infiltration system works
incorrectly designed. according to design. A
sediment trapping area is
installed to reduce sediment
transport into infiltration area.
A Storage area A soil texture test indicates Additional volume is added
drains slowly facility is not working at its through excavation to provide
(more than 48 designed capabilities or was needed storage. Soil is aerated
hours)or incorrectly designed. and rototilled to improve
overflows drainage. Contact the City for
information on its requirements
regarding excavation.
Mv Sediment Any sediment and debris filling Clean out sump to design
trapping area area to 10%of depth from sump depth.
bottom to bottom of outlet pipe
or obstructing flow into the
connector pipe.
One Time Sediment Stormwater enters infiltration Add a trapping area by
trapping area area directly without constructing a sump for settling
not present treatment. of solids. Segregate settling
area from rest of facility.
Contact City for guidance.
�1 Rock filters J Sediment and By visual inspection little or no Replace gravel in rock filter.
debris water flows through filter
during heavy rain storms.
Infiltration J Infiltration Standing Water in Inspection Excavate bottom of trench as
Trenches Failure Well After 48 hours after necessary but at least 3 feet.
storm or Overflow during Replace with crushed rock.
Storms Check pretreatment systems
13
for effectiveness. Check
tributary area for sediment
sources.
If you are unsure whether a problem exists,please contact the Jurisdiction and ask for technical assistance.
Comments:
Key A=Annual(March or April preferred)
M=Monthly(see schedule)
S=After major storms
14
SECTION 2 - RESPONSIBLE ORGANIZATION
An association established by the developer shall be responsible for the operation
and maintenance of all on-site drainage facilities.
SECTION 3 -VEGETATION MANAGEMENT PLAN
All disturbed pervious areas within the site will be landscaped to provide an
aesthetically pleasing environment.
SECTION 4 -SOURCE CONTROL
Warning signs (e.g., "Dump No Waste - Drains to Groundwater") will be embossed or
painted on asphalt adjacent to biofilter strips and will be repainted periodically as
necessary.
15
Appendix I
Final Drainage Calculations
STORM DRAINAGE CALCULATIONS
DB Industries
Mason County,WA
Reference:
WSDOE Storm Water Management Manual for the Puget Sound Basin, 1992 ed.
24 hour Design Storms:
6 month 2.9 inches (72%of 2-year)
2 year 4.0 inches
10 year 5.5 inches
100 year 8.5 inches
Design Infiltration Rate: 20 in./hr.
Drainage Basin Summary:
Impervious Impervious Disturbed Total Basin
Sub-Basin Parking Lot Building Pervious Area
Area Area Area
Sub-Basin A 0.68 acres 0.27 acres 0.71 acres 1.66 acres
Water Quality
Per StormShed Hydrologic Model(SBUH Method), the 6 month water quality storm
flow rate is 0.483 cfs*
*Water quality flow rate excludes roof runoff since roof drains will be tied directly to the infiltration gallery. See
StormShed output for"Basin A—No Roof'.
See biofilter strip calculations on next page.
Water Quantity:
(3) 262'long x 5'wide x 4.5'deep infiltration gallery with 1'dia.perf. pipe
Void ratio=0.30
(3)[((262')(5')(4.5')—(262')(3.14)(1'^2)/4)) (0.3)+ (262')(3.14)(1'^2)/4]
Total Storage Volume Provided = 5,737 cf
Active Live Volume =936 cf at Elev. =202.24'per StormShed modeling (see attached)
5,737 cf> 936 cf .. OK
24 Hour Drawdown:
(262'x 15')(20 in/hr)(1712")(24 hours) = 157,200 cf> 936 cf .: OK
Johns Prairie Business Park — Phase I
Biofilter Sizing Calculations Per WSDOE Stormwater Manual
Mason County,WA
7/30/2009
#06039A
BASIN A
Biofiltration swale/filter strip sized per Appendix AIII-6/1 of Volume III of the 1992 WSDOE Stormwater Management Manual
Design Flow Rate(6-mo.)from hyrdologic model, Q= 0.483 cfs
Longitudinal Slope,s= 0.040 ft/ft
Side Slope,Z= 1 :1
Manning's Coefficient,n= 0.070
Maximum Depth of Flow,y= 0.167 ft
Min.Required Width,b= 2 ft
Width Provided(per plan),b= 595 ft
Cross-Sectional Flow Area,A= 99.17 sf
Flow Velocity at Design Flow Rate,V= 0.005 ft/s
Minimum Residence Time,t= 20 minutes
Required Length,L= 5.8 ft
Proposed Length(per plan),L= 12 ft
Qn
b Zy
1.49(y^1.67)(s^0.5)
V= Q/A V must be less than 1.5 f 1s
L= Vt(60 sec/min) L must be greater than 200 ft for swales
StormShed Hydrologic Model Results 7/30/2009
Johns Prairie Business Park - Phase I Olympic Engineering Job#06039A
BASIN A-WATER QUALITY EVENT
Basin A - No Roof Event Summary:
BasinlD Peak Q Peak T Peak Vol Area Method Raintype Event
(cfs) (hrs) (ac-ft) ac /Loss
Basin A-No Roof 0.48 7.83 0.1853 1.39 SBUH/SCS TYPEIA 6 mo
Drainage Area: Basin A - No Roof
Hyd Method: SBUH Hyd Loss Method: SCS CN Number
Peak Factor: 484.00 SCS Abs: 0.20
Storm Dur 24.00 hrs
Area CN TC
Pervious 0.7100 ac 68.00 0.23 hrs
Impervious 0.6800 ac 98.00 0.02 hrs
Total 1.3900 ac
Supporting Data:
Pervious CN Data:
Disturbed Pervious 68.00 0.7100 ac
Impervious CN Data:
Paved Parking & Sidewalks 98.00 0.6800 ac
Pervious TC Data:
Flow type: Description: Length: Slope: Coeff: Travel Time
Sheet Sheet Flow 80.00 ft 1.00% 0.2400 14.09 min
Impervious TC Data:
Flow type: Description: Length: Slope: Coeff: Travel Time
Sheet Sheet Flow 87.00 ft 1.50% 0.0100 1.01 min
BASIN A-WATER QUANTITY
RLPCOMPUTE [LP Basin A] SUMMARY
100 yr MatchQ=PeakQ=2.7428 cfs Peak Out Q: 2.0104 cfs- Peak Stg: 202.24 ft-Active Vol: 936.18 cf
Summary Report of all RLPooll Data
Project Precips
[6 mo] 2.90 in
[2 yr] 4.00 in
[10 yr] 5.50 in
[25 yr] 6.50 in
[100 yr] 8.50 in
[Other] 999.00 in
BASLIST2
[Basin A] Using [TYPE1A] As [100 yr]
LSTEND
BasinlD Peak Q Peak T Peak Vol Area Method Raintype Event
(cfs) (hrs) (ac-ft) ac /Loss
Basin A 2.7428 7.83 0.9298 1.66 SBUH/SCS TYPEIA 100 yr
BASLIST [TYPE1A] AS [100 yr] DETAILED
[Basin A]
LSTEND
1 of 2
StormShed Hydrologic Model Results 7/30/2009
Johns Prairie Business Park - Phase I Olympic Engineering Job#06039A
Drainage Area: Basin A
Hyd Method: SBUH Hyd Loss Method: SCS CN Number
Peak Factor: 484.00 SCS Abs: 0.20
Storm Dur 24.00 hrs
Area CN TC
Pervious 0.7100 ac 68.00 0.06 hrs
Impervious 0.9500 ac 98.00 0.02 hrs
Total 1.6600 ac
Supporting Data:
Pervious CN Data:
Disturbed Pervious 68.00 0.7100 ac
Impervious CN Data:
Paved Parking & Sidewalks 98.00 0.6800 ac
Roofs 98.00 0.2700 ac
Pervious TC Data:
Flow type: Description: Length: Slope: Coeff: Travel Time
Sheet Sheet Flow 20.00 ft 2.00% 0.2400 4.86 min
Impervious TC Data:
Flow type: Description: Length: Slope: Coeff: Travel Time
Sheet Sheet Flow 90.00 ft 2.00% 0.0100 1.27 min
Sheet Roof Runoff 5.00 ft 10.00% 0.0100 0.05 min
HYDLIST SUMMARY
[100 yr Out]
LSTEND
HydID Peak Q Peak T Peak Vol Cont Area
(cfs) (hrs) (ac-ft) (ac)
100 yr Out 2.01 8.17 0.9303 1.6600
STORLIST
[Basin A Galllery]
LSTEND
Node ID: Basin A Galllery
Desc: Basin A Infiltration Gallery
Start El: 201.5000 ft Max El: 206.0000 ft
Contrib Basin: Contrib Hyd:
Length Width Void Ratio
262.0000 ft 15.0000 ft 30.00
DISCHLIST
[Basin A Gallery]
LSTEND
Control Structure ID: Basin A Gallery - Infiltration control structure
Descrip: Basin A Infiltration Gallery
Start El Max El Increment
201.5000 ft 206.0000 ft 0.10
Infil: 20.00 in/hr Multiplier: 1.00
2of2
Appendix II
Vicinity Map
SITE
SR-3
E JOHN'S PRAIRIE RO
N.T.S.
m �
x
BAYSHORE
o GP P GOLF
COURSE
SR-3 ;
300 Deschutes Way SW VICINITY MAP JOB NUMBER FIGURE
Suit 315
Tumwater WA 98501 06 039 A
O L Y M P I C (360)705-2474
ENGINEERING (360)705-2443 fax
DRAWING NAME
www.olyeng.com JOHNS PRAIRIE BUSINESS PARK - PHASE I VICMAP
Appendix III
Drainage Basin Map
----------------
...........
8 �"^• ��
SD W
Vll
I Ls •TEST' .. I
I -- - - PITS .1
j 1.
I
I I I
I i BUILDING #1 BUILDING #2 1
I5.940 SF S,WO 1
FF-210.25 FF.: . I
I -
I------------------- ----- ---------`�.----.-��._-- --- ----
I
\` L---------------- ----- ------------, — — ----J;
88
I" 50,
300 Deschutes Way SW DRAINAGE BASIN MAP JOB NUMBER FIGURE
Suite315
06039A
Tumwater WA 98501
O L Y M P I C (360)705-2474 II
DRAWING NAME
ENGINEERING (360)705-2443 fax
www.olyeng.com JOHNS PRAIRIE BUSINESS PARK - PHASE I BASINMAP
Appendix IV
Soils Report
SOIL EVALUATION REPORT
FORM 1: GENERAL SITE INFORMATION
PROJECT TITLE: John's Prairie Business Park SHEET: 1 OF 1
PE PROJECT NO.:07109 DATE: 3/15/07
PREPARED BY: William Parnell, P.E.
1. SITE ADDRESS: 3160 John's Prairie Road, Shelton WA
TPN: 320044390025, 320044390026, 320044390027, 320044390028
2. PROJECT DESCRIPTION: Create a commercial business park.
3. SITE DESCRIPTION: The project site is currently occupied by a single manufactured
residential dwelling. Site topography is gently undulating. Site vegetation consists of a conifer tree
grove located on the south end of the project site. The project site is bounded by John's Prairie
road to the north, and commercial property to the east, south and west. On-site soils are a well-
drained Carstairs series soils formed in gravelly glacial drift.
4. SUMMARY OF SOILS WORK PERFORMED: Two test pits were excavated by backhoe to a
maximum depth of 144" below existing grade. Soils were inspected by entering and visually
logging each test pit to a depth of four feet. Soils beyond four feet were inspected by examining
backhoe tailings. Two falling head percolation tests were completed. Test pit soil log data sheets
and infiltration test results are included in this report.
5. ADDITIONAL SOILS WORK RECOMMENDED: Additional soils work should not be necessary
unless drainage infiltration facilities are located outside the general area encompassed by the soil
test pits.
6. FINDINGS: The Natural Resource Conservation Service soil survey for Mason County mapped
the on-site soils as a Carstairs gravelly loam (Ca). All test pits confirmed the Carstairs
designation, generally profiling an extremely gravelly loam surface soil overlying an extremely
gravelly coarse sand substratum. The substratum gravels and sands were moderately loose.
Water table was not present in either test pit and possible indicators were not evident. Falling
head percolation tests completed at 72" below the existing grade in test pit#1 and#2 yielded
infiltration rates of 1080 in/hr and 720 in/hr respectively.
7. RECOMMENDATIONS: The Carstairs soil series is an excessively drained soil that formed in
gravelly glacial outwash. Infiltration rates are generally rapid in the substratum soils. The specified
substratum C-horizon soils should be targeted for all drainage infiltration facilities as noted in the
attached soil log data sheets. A design infiltration rate of 20 in/hr or less would be appropriate for
these targeted soils.
During construction, care must be taken to prevent the erosion of exposed soils. Drainage facility
infiltration surfaces must be properly protected from contamination by the fine-grained upper
horizon soils and from compaction by construction site activities. Soils not properly protected will
cause drainage infiltration facilities to prematurely fail.
I hereby certify that I prepared this report, and conducted or supervised the performance of related
work. I certify that I am qualified to do this work. I represent my work to be complete an accurate
within the bounds of uncertainty 7C-
DATE: nt to the practice of soils science, and to be suitable for its
intended use.
SIGNED:
•�`>/I S IOC ~
09
SOIL EVALUATION REPORT
FORM 2: SOIL LOG INFORMATION
PROJECT TITLE: John's Prairie Business Park SHEET: 1 OF 2
PE PROJECT NO.:07109 DATE: 3/9/07
PREPARED BY: William Parnell, P.E.
SOIL LOG: #1
LOCATION: 180 ft. east and 150 ft.south of the northwest property corner
1. TYPES OF TEST DONE: 2. SCS SOILS SERIES: 3. LAND FORM:
Falling Head Percolation Carstairs(Ca) Outwash Plains
4. DEPOSITION HISTORY: 5. HYDROLOGIC SOIL 6. DEPTH OF SEASONAL HW:
GROUP:
Gravelly Glacial Drift B Greater Than Bottom Of Hole
7. CURRENT WATER 8. DEPTH TO IMPERVIOUS 9. MISCELLANEOUS:
DEPTH: LAYER:
Greater Than Bottom Of Hole Greater Than Bottom Of Hole Gently Undulating
10. POTENTIAL FOR: EROSION RUNOFF PONDING
Minimal Slow Minimal
11. SOIL STRATA DESCRIPTION: See Following chart
12. SITE PERCOLATION RATE: See FSP
13. FINDINGS & RECOMMENDATIONS: The C-horizon soils were moderately loose.A falling head
percolation test completed at 72"below the existing grade yielded an infiltration rate of 1080 in/hr. Use a
design infiltration rate of 20 in/hr or less for drainage infiltration facilities located in the C-horizon soils.
Soils Strata Description
Soil Log #1
Horz Depth Color Texture %CL %ORG CF STIR MOT IND CEM ROO <X> FSP
Ap 0% 101, 10YR2/1 ExGrLm <10 <5 <65 Gr ff 2-6 2
Bw 10"- 21" 10YR3/2 ExGrLm <10 - <85 Gr mf 2-6 4
C1 21"- 44" 10YR5/3 Pea Gravel <1 <98 SG - mf >20 >40
with sand
binder
C2 44% 56" 10YR5/2 Gravel with <1 <98 SG mf >20 >40
C-MSa binder
C3 56% 77" 10YR5/4 ExGrSa <1 <85 SG >20 >40
C4 77%144" 10YR6/2 ExGrCSa <1 - <95 SG - >20 >40
SOIL EVALUATION REPORT
FORM 2: SOIL LOG INFORMATION
PROJECT TITLE:John's Prairie Business Park SHEET: 2 OF 2
PE PROJECT NO.:07109 DATE: 3/9/07
PREPARED BY: William Parnell,P.E.
SOIL LOG: #2
LOCATION: 180 ft. east and 400 ft. south of the northwest property corner
1. TYPES OF TEST DONE: 2. SCS SOILS SERIES: 3. LAND FORM:
Falling Head Percolation Carstairs(Ca) Outwash Plains
4. DEPOSITION HISTORY: 5. HYDROLOGIC SOIL 6. DEPTH OF SEASONAL HW:
GROUP:
Gravelly Glacial Drift B Greater Than Bottom Of Hole
7. CURRENT WATER 8. DEPTH TO IMPERVIOUS 9. MISCELLANEOUS:
DEPTH: LAYER:
Greater Than Bottom Of Hole Greater Than Bottom Of Hole Gently Undulating
10. POTENTIAL FOR: EROSION RUNOFF PONDING
Minimal Slow Minimal
11. SOIL STRATA DESCRIPTION: See Following chart
12. SITE PERCOLATION RATE: See FSP
13. FINDINGS& RECOMMENDATIONS:The C-horizon soils were moderately loose.A falling head
percolation test completed at 72"below the existing grade yielded an infiltration rate of 720 in/hr. Use a
design infiltration rate of 20 in/hr or less for drainage infiltration facilities located in the C-horizon soils.
Soils Strata Description
Soil Log #2
Horz Depth Color Texture %CL %ORG CF STIR MOT IND CEM ROO <X> FSP
Ap 011- 8" 10YR2/1 ExGrLm <10 <5 <65 Gr ff 2-6 2
Bw 8"- 17" 10YR3/2 ExGrLm <10 - <85 Gr - ff 2-6 4
C1 17"- 33" 10YR5/3 Pea Gravel <1 100 SG >20 >40
C2 33"-144" 10YR5/1 ExGr&Cob <1 <98 SG >20 >40
CSa
Abbreviations
Textural Class Structure Grades of Structure
(Texture) (STR)
Cobble -Cob Granular - Gr Strong - 3
Stoney - St Blocky - Blky Moderate - 2
Gravelly - Gr Platy - PI Weak - 1
Sandy Sa Massive - Mas
Loamy - Lm Single Grained - SG
Silty Si Sub-Angular Block - SBK
Clayey - CI
Coarse - C
Very - V
Extremely - Ex
Fine - F
Medium - M
Induration & Cementation
(IND) (CEM)
Weak - Wk
Moderate - Mod
Strong - Str
Mottles (MOT)
1 Letter Abundance 1st Number Size 2nd Letter Contrast
Few -F Fine - 1 Faint - F
Common - C Medium - 2 Distinct - D
Many - M Coarse - 3 Prominent - P
Roots (ROO)
1st Letter Abundance 2nd Letter Size
Few - f Fine -f
Common - c Medium - m
Many - m Coarse - c
<X> - Generalized range of infiltration rates from SCS soil survey (<X>)
FSP - Estimated Field Saturated Percolation rate based on horizon specific
factors.
Falling Head Percolation Test
John's Prairie Business Park
Test Date : 3/9/2007
Completed By : William Parnell, P.E.
PE Job #07109
Test Hole # 1 ( test completed @ 72" below existing ground surface )
Start Stop Elapsed Time Total Drop Infiltration Rate
( Min ) ( Min ) ( Min ) ( Inches ) ( In/Hr )
010011 0' 15" 0' 15" 6
0' 45" 1' 05" 0' 20" 6
1' 40" 2' 00" 0' 20" 6
2' 20" 2' 40" 012011 6
3' 00" 3' 20" 0' 20" 6
3' 40" 4' 00" 0' 20" 6
Soaking Period
30' 00" 30' 20" 0' 20" 6
30' 40" 31' 00" 0' 20" 6
31' 20" 31' 40" 0' 20" 6 1080
Note: Test completed with a 6"solid pvc pipe to prevent sidewall collapse.
Test Hole # 2 ( test completed @ 72" below existing ground surface )
Start Stop Elapsed Time Total Drop Infiltration Rate
( Min ) ( Min ) ( Min ) ( Inches ) ( In/Hr)
010011 0' 25" 0' 25" 6
0' 45" 1' 15" 0' 30" 6
1' 30" 2' 00" 0' 30" 6
2' 15" 2' 45" 0' 30" 6
3' 00" 3' 30" 0' 30" 6
3' 45" 4' 15" 0' 30" 6
Soaking Period
30' 00" 30' 30" 0' 30" 6
30' 45" 31' 15" 0' 30" 6
31' 30" 32' 00" 0' 30" 6 720
Note: Test completed with a 6"solid pvc pipe to prevent sidewall collapse.
FORM MUST BE COMPLETED IN INK MASON COUNTY PERMIT NO. A
PLEASE PRESS HARD BUILDING PERMIT APPLICATION
426 W. Cedar• P.O. Box 186, Shelton, WA 98584 '
Shelton (360)427-9670 • Belfair (360) 275-4467 • Elma (360) 482-5269
On the web www.co.mason.wa.us
APPLICANT INFORMATION CONTRACTOR INFORMATION tt
Owner )a .k r 4 L I. , Company Name d edl�, z.s•aA- ..".."*"y it
Mailing Address a ��_ Mailing Address kj 3V t5o&akw"U,
City j, AA i 4tW Stat Zip Code 9.F' � ��— City � tear State W_ Zip Code
Phone "` ''`" Other Ph. Phone 461 ?oi .464 ?' Other Ph.
Lien/Title Holder Contractor Reg. # Exp.
E mail address E Mail Address
Drivers Lic.# DOB Drivers Lic.# DOB
SEPTIC /WATER SYSTEM INFORMATION - Connect to New Septic — Existing Septic
Connect to Water System Name of Water System 0 a► ?' � v, �++Y ate-&
Well Sewer System Name of Sewer System
PARCEL INFORMATION - 12 Digit Parcel No. ~ a Fire District
Legal Description " 2a A Q 3 9,1 rJ o"
Site Address (Please include street name, street number and city) , �•4 '?ilo.3 1
Directions to site �+ �� •i `a"�' K=
Will timber be cut and sold in parcel preparation?Yes/No
Is property within 200' of Saltwater Lake River/Creek Pond r►-1 t
Wetland Seasonal Runoff Stream Slopes or Bluffs 15%
Is this permit submittal the result of a Stop Work Notice,Correction Notice or other enforcement action?Yes/No
TYPE OF JOB - New Add Alt Repair Other PRIMARY RESIDENCE ❑ SEASONAL ❑
Use of Building 407— Describe Work !ra„0 0—j", V" /Lbk ' '--
No. of Bedrooms No. of Bathrooms Square Footage - 1st Floor S' 1 2nd Floor
3rd Floor Basement Deck N 14 Covered DeckAJ I V1 Other AJ '' Sq. ft.
Garage Attached Detached Carport Attached Detached
MANUFACTURED HOME INFORMATION - Make Model Year
Length Width Serial No. No. of Bedrooms No. of Bathrooms
Type of Heat Purchase Price$ Replacement Unit? Yes/ No
Installer Name Certification No.
OWNER/BUILDER Acknowledges submission of inaccurate information may result in a stop work order or permit revocation.
Acknowledgement of such is by signature below. I declare that I am the owner, owners legal representative, or the contractor. I further declare
that I am entitled to receive this permit and to do the work as proposed in the application. I declare that I have obtained the permission from all
the necessary parties. If permission is required from any easement holder or any other party in interest regarding this application or the work
proposed in the application, I have obtained permission from them to apply for this permit and conduct the work proposed. The owner or
agent on owners behalf, represents that the information provided is accurate and grants employees of Mason County access to the above
described property and structure for review and inspection.This permit/application becomes null & void if work or authorized construction is
not commenced within 180 days or if construction work is suspended for a period of 180 days. PROOF OF CONTINUATION OF WORK IS BY
MEANS OFAPROGRESS INSPECTION.INACTIVITY OF THIS PERMIT APPLICATION OF 180 DAYS WILL INVALIDATE THE APPLICATION.
X Date: Y y it
Owner/Owners Representative/Contractor (indicate which one)
FOR OFFICIAL USE BEYOND THIS POINT Accepted by: Date
DEPARTMENTAL REVIEW APPROVED DENIED NOTES
Building Department - I—
Planning Department
Environmental Health Department
Fire Marshal "3 f
FEES
Building Permit Fee Site Ins ection
Plan Review Fee EH Review Fee
Plumbing & Base Fee Planninq Review Fee
Mechanical & Base fee Other
Wood /Gas/ Pellet Stove Fee State Fee
Violation Fee Pre-Paid at Submittal
Valuation $ TOTAL FEES
FORM MUST BE COMPLETED IN INK MASON COUNTY PERMIT NO€
PLEASE PRESS HARD BUILDING PERMIT APPLICATION
426 W. Cedar• P.O. Box 186, Shelton, WA 98584
Shelton (360) 427-9670 - Belfair (360) 275-4467 • Elma (360) 482-5269
On the web www.co.mason.wa.us
APPLICANT INFORMATION CONTRACTOR INFORMATION
Owner Aj f , c Company Name F Xte
Mailing Address /,--A V J Mailing Address f.. .Sr
City t 4,d1 State 40 Zip Code 2SAX0t City — .. ±Q& State - 4 Zip Code
Phone "''!#.�A,'_,- --'y Other Ph. 41 Phone 7o1 •164 Other Ph.
Lien/Title Holder Contractor Reg. # Me d1 14t Exp.
E mail address E Mail Address
Drivers Lic.# DOB Drivers Lic.# DOB
SEPTIC /WATER SYSTEM INFORMATION - Connect to New Septic_ Existing Septic
Connect to Water System Name of Water System
Well Sewer System Name of Sewer System
PARCEL INFORMATION - 12 Digit Parcel No. Fire District
Legal Description 15
Site Address (Please include street name, street number and city) (m0
Directions to site 'oaf..► �/ra.��`�[ f aye ' S •�'`°^� W
Will timber be cut and sold in parcel preparation?Yes/No
Is property within 200' of Saltwater Lake River/ Creek Pond 4,3
Wetland Seasonal Runoff Stream Slopes or Bluffs 15%
Is this permit submittal the result of a Stop Work Notice,Correction Notice or other enforcement action?Yes/No
TYPE OF JOB - New Add Alt Repair Other PRIMARY RESIDENCE ❑ SEASONAL ❑
Use of Building Describe Work ��`�,sk,,e 11"1,'9 I,'s r - ° ' " /P, 4—
No. of Bedrooms, No. of Bathrooms Square Footage- 1st Floor 3 40 2nd Floor
3rd Floor Basement Deck 14 Covered Dec AA � / �` Sq. ft.
Garage Attached Detached Carport ' Attached Detached
MANUFACTURED HOME INFORMATION - Make Model Year
Length Width Serial No. No. of Bedrooms No. of Bathrooms
Type of Heat Purchase Price $ Replacement Unit? Yes/ No
Installer Name Certification No.
OWNER/BUILDER Acknowledges submission of inaccurate information may result in a stop work order or permit revocation.
Acknowledgement of such is by signature below. I declare that I am the owner,owners legal representative,or the contractor. I further declare
that I am entitled to receive this permit and to do the work as proposed in the application. I declare that I have obtained the permission from all
the necessary parties. If permission is required from any easement holder or any other party in interest regarding this application or the work
proposed in the application, I have obtained permission from them to apply for this permit and conduct the work proposed. The owner or
agent on owners behalf, represents that the information provided is accurate and grants employees of Mason County access to the above
described property and structure for review and inspection. This permit/application becomes null & void if work or authorized construction is
not commenced within 180 days or if construction work is suspended for a period of 180 days. PROOF OF CONTINUATION OF WORK IS BY
MEANS OLFA PROGRESS INSPECTION.INACTIVITY OF THIS PERMIT APPLICATION OF 180 DAYS WILL INVALIDATE THE APPLICATION.
X /�--�Or.+� .� yri Date. /Z q �d�
Owner/Owners Representative/Contractor (indicate which one)
FOR OFFICIAL USE BEYOND THIS POINT Accepted by: Date
DEPARTMENTAL REVIEW APPROVED DENIED NOTES
Building Department
Planning Department
Environmental Health Department
Fire Marshal
FEES
Building Permit Fee Site Inspection
Plan Review Fee EH Review Fee
Plumbing & Base Fee Plaa2!22 Review Fee
Mechanical & Base fee Other
Wood/Gas/ Pellet Stove Fee State Fee
Violation Fee Pre-Paid at Submittal
Valuation $ TOTAL FEES
MASON COUNTY PERMIT NO.
PLUMBING/MECHANICAL PERMIT APPLICATION
426 W.Cedar• P.O. Box 186, Shelton, WA 98584
Shelton (360) 427-9670 • Belfair (360) 275-4467• Elma (360) 482-5269
On the web www.co.mason.wa.us
APPLICANT INFORMATION CONTRACTOR INY,013110ATION
Owner �� T:.►���a ri C� l'_L e Company Name E774cillc ,..T�.,.
Mailing Address I Z ���er %-t c," "). Mailing Address L3 S O-
City -StatezQ A Zip Code 4' a_.52 i-1 City -#w4 State 4'- Zip Code.'11if5_99
Phone 3C.C) -7 C1 t-CLV Other P(e)`' 1t IL -�/ Phon Other P i�2_*�d
Lien/Title Holder Contractor Reg. AC:M— Q4 O'�WExp.
E mail address E Mail Address
Drivers Lic.# DOB Drivers Lic.# DOB
SEPTIC INFORMATION - Connect to New Septic Existing Septic. Connect to Sewer System
Name of Sewer System
PARCEL INFORMATION - 12 Digit Parcel No. �C ' Cc, - Fire District
Legal Description 5av -T-ac 4j M
Site Address (Please include street name, sitreet number and city) -3Z(. A •z
Directions to site
Is property within 200'of Saltwater II s. Lake -River/Creek u Pond �=
Wetland Kk« Seasonal Runoff _Stream tit 0 Slopes or Bluffs > 15%
TYPE OF JOB - New Add Alt Repair Other Use of Building
Location of Fixtures/Units - 1st Floor 2nd Floor Basement Garage Closet
PLUMBING FIXTURES (Show Number of each) MECHANICAL UNITS
Type of Fixture No. of Fixtures Fees Fuel Type:Electric - LPC— Natural Gas Heat Pump_
Toilets Type of Unit No. of Units Fees
Bathroom Sink Furnace
Bath Tubs Heatpumps --
Showers Spot Vent Fan 3
Water Heater Propane Tank .�
Clothes Washer Gas Outlets .�
Kithen Sinks Wood/Gas/Pellet Stove
Dishwasher —^ Kitchen Exhaust Hood
Hosebibs Dryer Vent
Other Other
Base Fee Base Fee
TOTAL PLUMBING TOTAL MECHANICAL
OVVNER/BUILDER Acknowledges submission of inaccurate information may result in a stop work order or permit revocation.Acknowledgement of
such is by signature below.I declare that I am the owner,owners legal representative,or the contractor.I further declare that I am entitled to receive this
permit and to do the work as proposed in the application.I declare that I have obtained the permission from all the necessary parties.If permission is
required from any easement holder or any other parry in interest regarding this application or the work proposed in the application, I have obtained
permission from them to apply for this permit and conduct the work proposed. The owner or agent on owners behalf,represents that the information
provided is ajccuLate and grants employees of Mason County access to the above described property and structure for review and inspection.
PRO ION F WORK IS BY MEANS OF A PROGRESS INSPECTION.
X Date: C. (2-I. it C: �l
Owner Owners presentative/Contractor (indicate which one)
FOR OFFICIAL USE BEYOND THIS POINT
Accepted by: Planning Pd Ck# Date Bld Pd Receipt No.
DEPARTMENTAL REVIEW APPROVED DENIED NOTES
Building Department
Occ Group—Typ2 Constr.
Planning Department
Environmental Health Department
FEES
Plumbing & Base Fee Site Inspection
Mechanical & Base fee UFC Plan Review Fee
Wood /Gas/Pellet Stove Fee Other
Violation Fee TOTAL FEES
=q FORM MUST BE COMPLETED IN INK MASON COUNTY PERMIT NO f
PLEASE PRESS HARD BUILDING PERMIT APPLICATION
426 W. Cedar• P.O. Box 186, Shelton, WA 98584
Shelton (360) 427-9670 • Belfair (360) 275-4467 • Elma (360) 482-5269
On the web www.co.mason.wa.us
APPLICANT INFORMATION CONTRACTOR IV�ORMATION
Owner !X �_%Ju:o 4r:z L Z Company Name Wjc c i-ri Cy 5CL 0"
Mailing Address r G 5Krgoisw - u d Mailing Address 3 �' •(Acs' U I t� f
City �k-i'�:� Stated Zip Code `2 Sys s- r� City �I ir-a....J State Sa Zip Code 11LIZE.' NI�
Phone �4 1 7C I C`41Other Ph. --ifr o 9 4L 3 y Phone � -70 f t Other,�Ph.EI n t
Lien/Title Holder ' Contractor Reg. # /Vrid�� 9 p.
E mail address E Mail Address
Drivers Lic.# DOB Drivers Lic. # DOB
SEPTIC /WATER SYSTEM INFORMATION - Connect to New Septic_ Existing Septic
Connect to Water System Name of Water System _�� �' � �L A�,t L\ T
Well Sewer Syste
_mL Name of Sewer System
PARCEL INFORMATION - 12 Digit Parcel No. ZZ, S- Fire District
Legal Description `` 161 r 1-
Site Address (Please include street name, street number and city)
Directions to site c "^I
.*-*-' 5SAa ,
Will timber be cut and sold in parcel pr paration?Yes o
Is property within 200'of Saltwater �+'� Lake c; River/Creek Pond
Wetland-L&-a-L-Seasonal Runoff 14` Stream Slopes or Bluffs > 15%
Is this permit submittal thp result of a Stop Work Notice,Correction Notice or other enforcement action?Yes/No
TYPE OF JOB - New Add Alt Repair - Ot er PRIMARY Rl�SIDENCE4SEASONALUse of BuildingL4* I ( .a-��Y< J. • u�nescribe Work c�'.ti e Lo` o-
No. of Bedrooms E� No. of Bathrooms _1_Square Footage- 1st Floor eit? lb 2nd Floor
3rd Floor Basement Deck " Covered Deck Other Sq. ft. —
Garage Attached Detached — I Carport — Attached Detached
MANUFACTURED HOME INFORMATION - Make Model Year
Length Width Serial No. No. of Bedrooms No. of Bathrooms
Type of Heat Purchase Price $ Replacement Unit? Yes/ No
Installer Name Certification No.
OWNER/BUILDER Acknowledges submission of inaccurate information may result in a stop work order or permit revocation.
Acknowledgement of such is by signature below. I declare that I am the owner, owners legal representative, or the contractor. I further declare
that I am entitled to receive this permit and to do the work as proposed in the application. I declare that I have obtained the permission from all
the necessary parties. If permission is required from any easement holder or any other party in interest regarding this application or the work
proposed in the application, I have obtained permission from them to apply for this permit and conduct the work proposed. The owner or
agent on owners behalf, represents that the information provided is accurate and grants employees of Mason County access to the above
described property and structure for review and inspection. This permit/application becomes null &void if work or authorized construction is
not commenced within 180 days or if construction work is suspended for a period of 180 days. PROOF OF CONTINUATION OF WORK IS BY
M O PROGR SS INSPECTION.INACTIVITY OF THIS PERMIT APPLICATION OF 180 DAYS VFI LINVALIDATE THE APPLICATION.
X!;! t Date: �; �� �L
caner/ wners epresentative/Contractor (indicate which one)
FOR OFFICIAL USE BEYOND THIS POINT Accepted byy: ` Datel -3 U
DEPARTMENTAL REVIEW APPROVED DENIED NOTES
Building Department
Planning Department
Environmental Health Department
Fire Marshal
FEES
Building Permit Fee Site Ins ection
Plan Review Fee EH Review Fee
Plumbing & Base Fee Planninq Review Fee
Mechanical & Base fee Other
Wood /Gas/ Pellet Stove Fee State Fee
Violation Fee Pre-Paid at Submittal
Valuation $ TOTAL FEES
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FORM MUST BE COMPLETED IN INK MASON COUNTY PERMIT NO.� I `
PLEASE PRESS HARD BUILDING PERMIT APPLICATION
426 W. Cedar• P.O. Box 186, Shelton, WA 98584
Shelton (360) 427-9670 - Belfair (360) 275-4467 • Elma (360) 482-5269
On the web www.co.mason.wa.us
APPLICANT INFORMATION CONTRACTOR INFORMATION
00
Owner J ,ij,*s a,: L L C Company Name -t, c i� f y���_�CA&
Mailing Address #3 SF 'SA ft"*- u i e& Mailing Address 13 S'V S j(Aek ga me% to" t J ID/-
City '*WAJ tate' Zip Code 1 A Cd City Z 6 Ii. 11 State 1610— Zip Code o
Phone n _ �4�G�. Other Ph. 1 � � Phone • '7 Other Ph.,r/ 0 �
Lien!Title Holder Contractor Reg. # •Oa i lrk Exp.
E mail address E Mail Address
Drivers Lic. # DOB Drivers Lic. # DOB
SEPTIC /WATER SYSTEM INFORMATION - Connect to New Septic }C Existing Septic
Connect to Water System Name of Water System jok
Well Sewer System Name of Sewer System
PARCEL INFORMATION - 12 Digit Parcel No. Fire District
Legal Description l ` -
Site Address (Please include street name, street number and city) r
Directions to site �b�, •'+ r1 SL• i- ��+ J #�
Will timber be cut and sold in parcel p-rgp_ar`ation?Yes/No
Is property within 200'of Saltwater Lake River/Creek Pond /l.li,
Wetland Seasonal Runoff_ lam?'' Stream Slopes or Bluffs 150%
Is this permit submittal the result of a Stop Work Notice,Correction Notice or other enforcement action?Yes/No
TYPE OF JOB - New _Add Alt Repair Ot er PRIMARY RESIDENCE ❑ SEASONAL ❑
Use of Building -+• Describe Work Ste` d'
No. of Bedrooms ' No. of Bathrooms Square Footage - 1st Floor elf `E 2nd Floor.
3rd Floor Basement Deck Covered Deck Other Sq. ft.
Garage Attached Detached Carport Attached Detached
MANUFACTURED HOME INFORMATION - Make Model Year
Length Width Serial No. No. of Bedrooms No. of Bathrooms
Type of Heat Purchase Price $ Replacement Unit? Yes/ No
Installer Name Certification No.
OWNER /BUILDER Acknowledges submission of inaccurate information may result in a stop work order or permit revocation.
Acknowledgement of such is by signature below. I declare that I am the owner, owners legal representative, or the contractor. I further declare
that I am entitled to receive this permit and to do the work as proposed in the application. I declare that I have obtained the permission from all
the necessary parties. If permission is required from any easement holder or any other party in interest regarding this application or the work
proposed in the application, I have obtained permission from them to apply for this permit and conduct the work proposed. The owner or
agent on owners behalf, represents that the information provided is accurate and grants employees of Mason County access to the above
described property and structure for review and inspection. This permit/application becomes null & void if work or authorized construction is
not commenced within 180 days or if construction work is suspended for a period of 180 days. PROOF OF CONTINUATION OF WORK IS BY
MEANS OFAPROGRESS INSPECTION.INACTIVITY OF THIS PERMIT APPLICATION OF 180 DAYS WILL INVALIDATE THEAPPLICATION.
X ) � Date: L II
Owner/O ners Representative/Contractor (indicate which one)
FOR OFFICIAL USE BEYOND THIS POINT Accepted by: Date
DEPARTMENTAL REVIEW APPROVED DENIED NOTES
Building Department 31-D
Planning Department
Environmental Health Department
Fire Marshal -31_Cj
FEES
Building Permit Fee Site Inspection
Plan Review Fee EH Review Fee
Plumbing & Base Fee Planning Review Fee
Mechanical & Base fee Other
Wood /Gas/ Pellet Stove Fee State Fee
Violation Fee Pre-Paid at Submittal
Valuation $ TOTAL FEES