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HomeMy WebLinkAbout2026-007240 . + 2026007240 Elaina Cano San Luis Obispo - County Clerk-Recorder 03/10/2026 04:39 PM RECORDING REQUESTED BY: Recorded at the request of. City of Arroyo Grande PUBLIC Community Development Department Titles: 1 Pages: 26 Fees: $89.00 AND WHEN RECORDED MAIL TO: Taxes: $ .00 Total: $8989.0.0 0 j CITY OF ARROYO GRANDE Iti�f �� ��� ` ti` t�iS' 111 CITY CLERK 300 EAST BRANCH STREET ARROYO GRANDE,CA 93420 - GENERAL NOTICE For Private Stormwater Management System Operations and Maintenance 867 Castillo Del Mar Arroyo Grande,CA 93420 Property Address (Street No. &Street Name, City, State, Zip) 006-097-001 BLD24-000227 Property APN# Construction Permit# Property Legal Description:Refer to Exhibit A,attached hereto System Description:Refer to Exhibit B,attached hereto RECITALS: Megan Rice [Owner's name], hereinafter referred to as "OWNER" of the real property referenced above, is required by existing City codes and regulations to utilize "on-site stormwater management systems" (i.e. structural and/or non-structural) to minimize runoff and pollutants in runoff and to provide permanent storm drainage to control, manage, retain, treat, infiltrate and dispose of: (1) "on-site storm drainage for the Project"and(2)"ancillary street and site drainage from the adjoining street and sites"as stipulated in the approved project. The Owner is solely responsible for the Private Stormwater Management System, hereinafter referred to as "the SYSTEM," as described in Exhibit`B,"attached hereto. The Owner agrees to the following conditions in compliance with all local,state, federal laws and regulations: 1. OPERATIONS AND MAINTENANCE: OWNER shall maintain, monitor, clean and repair the SYSTEM in the state of operation as it was originally constructed. The OWNER agrees that the SYSTEM shall not be removed from the Property unless and until the SYSTEM has been replaced with other stormwater system features in accordance with Arroyo Grande Municipal Code Title 13.24.100.A.10. 2. CITY RIGHTS & AUTHORITY: Pursuant to Arroyo Grande Municipal Code Title 16.08.100, the City has the right and authority to inspect the SYSTEM to determine compliance with this Notice (i.e. maintenance,monitoring,repairs)and Arroyo Grande Municipal Code. 3. FAILURE TO MAINTAIN,MONITOR,CLEAN or REPAIR SYSTEM: Failure to maintain,monitor, clean or repair the SYSTEM as required herein shall constitute a public nuisance. The City may remedy such public nuisance through any of the applicable procedures set forth in the Arroyo Grande Municipal Code, including nuisance abatement proceedings, and may pursue any other available legal or equitable remedies to abate such public nuisance. City of Arroyo Grande Notice for Private Stormwater Management System Updated: 7/15/2019 i. . 4. INDEMNIFICATION: OWNER further agrees to defend, indemnify, protect and hold the City and its agents,officers and employees harmless from and against any and all claims asserted or liability established for damages or injuries to any person or property, including to OWNER's tenants, guests, invitees, agents or employees, which arise from or are connected with or caused or claimed by the acts or omissions of OWNER, and its agents, employees or contractors, in performing the obligations specified herein, and all expenses of investigating and defending against same; provided, however, that OWNER's duty to indemnify and hold harmless shall not include any claims or liability arising from the established sole negligence or willful misconduct of the City,its agents,officers or employees. 5. BINDING ON FUTURE OWNERS: This Notice shall run with the property and shall bind the undersigned OWNERs, their heirs, executors, administrators, assigns and successors in interest. The OWNER agrees that if OWNER hereafter sells the real property referenced in Exhibit A,the OWNER shall provide printed educational materials (the Plans and Manuals) to the buyer regarding the SYSTEM(s)that are located on the property including the type(s) and location(s) of all such features, and instructions for properly maintaining all such features. 6. RECORDING OF NOTICE: This Notice shall be recorded in the office of the San Luis Obispo County Clerk Recorder, and such recordation shall serve as notice of the restrictions and obligations contained herein to be performed and observed by OWNER and the successors in interest to all or any portion of Owner's Property. OWNER(S)OF RECORD: Megan Rice 867 Castillo Del Mar Owner(Printed Name) Owner's Street Address Arroyo Grande,CA 93420 Business Affiliation and Tittlle/(applicable) Owner's City/State,Zip Code �.��re' ke '. )�1r.,r� / —1—. �1, Ow.ne'F's Sig ture* f Date *(Owner's ki nature must be notarized) CITY APPROVAL: The SYSTEM design and the content of this General Notice has been reviewed and approved by a representative from the City of Arroyo Grande: tic.f' NO ' r-0.1A ..-e, go- ova \ C \j Mcxnox City R resentative (Pr' el Title P3 City Representative(Signature) Date: City of Arroyo Grande Notice for Private Stormwater Management System Updated: 7/15/2019 ACKNOWLEDGMENT A notary public or other officer completing this certificate verifies only the identity of the individual who signed the document to which this certificate is attached, and not the truthfulness, accuracy, or validity of that document. STATE OF CALIFORNIA ) ) ss. COUNTY OF SAN LUIS OBISPO ) Or UO 2(p, 202,1g before m&matunciel /o► 12 f,C ,a Notary Public, in and for t State of California, personally appeared a _, who proved to me on the basis of satis ctory evidence to be the person(s) whose name(s) is/are subscribed to the within instrument and acknowledged to me that he/she/they executed the same in his/her/their authorized capacity(ies),and that by his/her/their signature(s)on the instrument the person(s)or the entity upon behalf of which the person(s)acted,executed the instrument. I certify under PENALTY OF PERJURY under the laws of the State of California that the foregoing paragraph is true and correct. WITNESS my hand and official seal. SMnwNOELGONZALEZ Signature(6 t, ++, A Commission*24Oem U. %.. . Nc y Publx.Cdeorctla N gnature of Notary Public { San Lull Obispo Caurty S ,/My Comm Expires JUN 22,2026 [SEAL] City of Arroyo Grande Notice for Private Stormwater Management System Updated: 7/15/2019 CALIFORNIA ACKNOWLEDGMENT CIVIL CODE § 1189 A notary public or other officer completing this certificate verifies only the identity of the individual who signed the document to which this certificate is attached,and not the truthfulness,accuracy,or validity of that document. State of Calif rnia 1 County of UCt,if1 Lac s 6-b i S p D On 3 0-0a_cp before me, J 1i- - °t-,�GLA,:)k-( -S k'ot ''' �I.�(D,.cG to Here Insert Name and Title of the Of r personally appeared I( )C`t? k-e.� Owni Name(s)of igner(s) who proved to me on the basis of satisfactory evidence to be the person(s)whose name(s) is/are subscribed to the within instrument and acknowledged to me that he/she/they executed the same in his/her/their authorized capacity(ies),and that by his/her/their signature(s)on the instrument the person(s),or the entity upon behalf of which the person(s) acted, executed the instrument. I certify under PENALTY OF PERJURY under the ,, JULIEa.HAWKINS laws of the State of California that the foregoing =_ Notary Public•California paragraph is true and correct. i ` San Luis Obispo County > % �:R'. ' Commission 2a83897 WITNESS my hand and official seal. '•u o My Comm.Expires Mar 5,2028 i Signature l&-il-'`" a . Ci u k'V Place Notary Seal and/or Stamp Above ( Signature of Notary Public OPTIONAL — Completing this information can deter alteration of the document or fraudulent reattachment of this form to an unintended document. ________---- Description of Attached Document Title or Type of Document: Document Date: _ Number of Pages: Signer(s) Other Than Named Above: _ Capacity(ies) Claimed by Signer(s) Signer's Name: _ Signer's Name: ❑ Corporate Officer—Title(s): ❑ Corporate Officer—Title(s): ❑ Partner— 0 Limited r-eneral 0 Partner— 0 Limited ❑ General ❑ Individual 0 Attorney in Pact ❑ Individual 0 Attorney in Fact ❑ Trust& ❑ Guardian or Conservator ❑ Trustee 0 Guardian or Conservator O Other: ❑ Other: _ Signer is Representing: Signer is Representing: ©2018 National Notary Association Exhibit A Property Legal Description in Full City of Arroyo Grande Notice for Private Stormwater Management System Updated: 7/15/2019 Exhibit A Property Legal Description in Full The following described property in the City of Arroyo Grande, County of San Luis Obispo, State of California: Lot 1 of Tract Map No. 3048 City of Arroyo Grande County of San Luis Obispo, State of California. APN: 006-097-001 Exhibit B Stormwater Management System Description City of Arroyo Grande Notice for Private Stormwater Management System Updated: 7/15/2019 • O�-nm13,3 \NN\ —1Z 0 z 0 Ricr-7 m ¢ m cn T m r 0 IN.71 0 1 OZ-1 Z \\, R mD-- O n D -I _I co 0 L11 �.O co n z 4 Q f 73 `. I ,`Zit o O MO n . I �.rr L ito, II si f '�'-� 0 z>. D Z p mA Z5 8 fn fn -1 1 zm 3811` DO �4 f 0 CD U) A.,‘ s°zarn�o e C —IIt ��'aa<' ° • () ' 2 co - -� i . , .. x `0 2 \ \ o° m CO % \ .,„ A' .0 \ A • • \% \ Dy m \ x.O t\ 1lk ° 1 1 I 1 I s • .,y a to • • pA co II ay g 0 0 osya8 . 867 CASTILLO DEL MAR JENNIFERMARTIN ARROYO G RAN D E, CA ARCHITECTURE+DESIGN 93420 Exhibit B: Structural Best Management Practice(BMP) Description BM P#:26-000001-1 1. Performance Requirement ❑ Water Quality Treatment ❑ Runoff Retention ❑ Peak Management Addressed (Performance Requirement (Performance Requirement (Performance Requirement (Check all that apply): #2) #3) #4) Decentralized BMP: Biofiltration Feature 0 Bioretention Feature Bioswale ElCatch Basin Insert El Infiltration Feature 2.Type of BMP Installed: ElSettling Basin 0 Porous Pavement 0 Filtration Device (Check only one): Centralized BMP: El Bed Filter ®Detention Basin 0 Dry Basin ❑� Infiltration Basin DWet Basin in Media Filter ®Treatment Vault 3.Location of BMP Location: xi Onsite 0 Offsite Contributing Impervious Area(ft2): 2,764 SF (Complete ALL fields) Narrative Location Description: Located @ the front driveway approach&up to the middle of the concrete driveway. Drainage Management Drainage Area Area(DMA)Number: Treated(acres): _ Latitude: Longitude: Design Storm Flow(cfs): 4.Drainage Design Criteria: (As applicable): Design Storm Capacity(ft): 5.Design Details Width(ft): Slope(ft/ft): Full Constructed Dimensions Depth(ft): BMP CapacityNolume(ft): (As applicable): Length(ft): Surface Area(ft2): Is this BMP OYES ONO BMP Vegetated? ES EINO subsurface? g Design Vegetation N/A Does this BMP involve a DYES ENO Height(ft): manufactured product? 6. Manufactured Product Product Name: Air Vol Block Specifications: Manufacturer/Model Number: Roman Permeable Pavers Grey Charcoal (Include manuals and specifications) Number Installed Onsite: 1,421 SF Product Life: 7. Maintenance and Inspection Frequency: 'are-Rain ❑Monthly ❑Semi-Annually❑Annually Inspection Frequency: Maintenance ❑Monthly❑Semi-Annually ['Annually ['Biennially Frequency: City of Arroyo Grande Page of UPDATED 11/30/2018 CITY of CITY OF ARROYO GRANDE �+«�,,, ;R OFFICE USE ONLY ^f COMMUNITY DEVELOPMENT DEPARTMENT SWP2-6-oocc9 Private Stormwater System Plans CALIF ,` and Manuals Porous Pavement and Catch Basin Insert Maintenance Information Assigned BMP#: Structural BMP SW P26-000001-01 Maintenance BMP Feature Type: ❑ Porous Concrete © Pervious Pavers I® Catch Basin Filter Details Does the BMP include a Contact for vendor who can provide replacement parts or maintenance proprietary device/structure? instructions: Air Vol Block(805)543-1314 YES NO Describe short-term maintenance requirements(frequency of filter replacement or inspection): Refer to Tech Spec 23 Maintenance Guide for Permeable Interlocking Concrete Payers Estimated annual cost for maintenance: $100 Estimate Describe long-term maintenance requirements: Keep joints filled with permeable aggregate-Yearly maintenance Contact information for local professional qualified to maintain or repair this BMP: Snyder&Sons Landscape(805)748-7292 Additional notes: 300 E.BRANCH STREET I ARROYO GRANDE, CALIFORNIA 93420 I (805)473-5420 www.arrovogrande.orq I agcity@arrovogrande.orq UPDATED 11/30/2018 j.•..CITY OF CITY OF ARROYO GRANDE """fie COMMUNITY DEVELOPMENT DEPARTMENT OFFICE USE ONLY :11.11111.11�. � swP 400- - Engineer's Certification of Stormwater CA Lei OR'N_IAJ, Structural Best Management Practices 867 Castillo Del Mar Arroyo Grande,CA 93420 Project Street Address City Rice Residence BLD24-000227 Project Name Construction Permit Number(s) I, the undersigned California Registered Civil engineer, hereby certify that I or my authorized agent have inspected each of the stormwater Structural Best Management Practices (BMPs) required for the approval of the above referenced Project. I have found the BMPs to be installed consistent with the approved Stormwater Control Plan, and that BMPs were constructed and are now sufficiently stabilized in substantial conformance with the approved grading and/or building plans. I state that, to the best of my knowledge, the following elements have been satisfactorily installed or completed: ID Drain inlet and outlet elevations are correct. 0✓ Specialized media (rock or soil)and devices installed correctly per design plans. �✓ Appropriate landscape plant species installed per design plans. �✓ Relevant maintenance manuals have been provided to the system owner/operator. 0✓ Owner/operator is aware of any sub-grade features and required maintenance. �✓ Piping and connections on any sub-grade features are installed correctly. ✓0 Structural BMPs are installed and functioning as designed per approved plans. Any revisions made during construction to the originally approved plans were reviewed and approved by City staff and are indicated on As-Builts and revised Operations and Maintenance Plan. Anna Kauo,Aloha Ke Akua Engineering Corporation Design Engineer Name and Affiliation /�Q�OFESS� � / �!i Np`M.i{,q `. �v� Qa GO F C74725,Registered Professional Engineer,State of California iS y�\I License Number and Type s I NO. 74725 EXP. 12/31/2027 Z1, 0/44 * Design Engineer Signature Date s�9r� I ea�P F cp4'F O 300 E.BRANCH STREET I ARROYO GRANDE, CALIFORNIA 93420 I (805)473-5420 PAGE 1 OF 1 www.arrovoarande.orq I aacity@arrovoarande.orq UPDATED 11/30/2018 . • , • KA ENGINEERING January 28,2026 Andrew and Megan Rice 867 Castillo Del Mar Arroyo Grande,CA 93420 Subject: Rice Residence—867 Castillo Del Mar,Arroyo Grande Final Grading and Drainage Dear Andrew and Megan Rice, Based on construction activities of the site on 01/27/2026,final grading has beer completed substantially in conformance with the approved grading and drainage plan. Sincerely, vsOFESS/ON Casiiki/o 4- v.- Anna Kauo, RCE 74725 NO. 74725 m President,Aloha Ke Akua Engineering Corporation w • Ce. EXP. 12/31/2027 X �1.qrF OFN 1t.1.�F0��`P CI ALOHA KE AKUA ENGINEERING CORPORATION WWW.AKAENGCO.US �. CITY OF CITY OF ARROYO GRANDE P0,0VIJ �H OFFICE USE ONLY -. �M►: COMMUNITY DEVELOPMENT DEPARTMENT SWP CALt�a ._.I Private Stormwater System Owner, Agent, & Designer Information SWP BLD Stormwater Permit (SWP) Number Building Permit Number (SWP##-####) (BLD##-######) 867 Castillo Del Mar Arroyo Grande,CA 93420 Project Address SYSTEM OWNER: Megan Rice Current Property Owner (Include name of primary contact) 867 Castillo Del Mar Street Address Arroyo Grande CA City State 93420 (805)705-4820 Zip Code Phone Number Rice.megank@gmail.com Owner Email: SYSTEM DESIGNER: Designer Name and Affiliation Designer License Number and Type Street Address City State Zip Code Phone Number Designer Email: 300 E.BRANCH STREET I ARROYO GRANDE, CALIFORNIA 93420 I (805)473-5420 PAGE 1 OF 2 www.arrovoarande.orq I aacity@arrovoarande.orq UPDATED 11/30/2018 CITY OF CITY OF ARROYO GRANDE RR0YO OFFICE USE ONLY P COMMUNITY DEVELOPMENT DEPARTMENT SWP Private Stormwater System Owner, Agent, & Designer Information PROJECT AGENT (if applicable): Agent Name and Affiliation(Include name of primary contact) Street Address City State Zip Code Phone Number Agent Email: COORDINATING CITY REPRESENTATIVE: City Representative(Printed Name) City Representative Title Email Phone 300 E.BRANCH STREET I ARROYO GRANDE, CALIFORNIA 93420 I (805)473-5420 PAGE 2 OF 2 www.arroyogrande.or I aacitv@arrovogrande.orq UPDATED 11/30/2018 Maintenance Information Forms/Applicable Manuals /4% C4r4k, ♦ . _ Tech Spec 23 cfVICPI L Y, Interlocking Concrete Pavement Institute® Maintenance Guide for Permeable Interlocking Concrete Pavements introduction Permeable interlocking concrete pavements(PICP)are a Like all stormwater control measures, PICP requires proven method for reducing stormwater runoff and pol- maintenance as it traps sediment on its surface not unlike lutants while supporting pedestrian and vehicular traffic. an air conditioning filter. Larger particles are initially Many laboratory and in-situ research projects over the trapped while allowing water to pass. Some enter the past two decades by universities,government stormwa- jointing stone and are trapped there.The jointing stone ter agencies,and industry have demonstrated significant with larger particles eventually captures smaller particles runoff and pollutant reductions with cost-saving benefits. and this decreases the infiltration rate over time.While The U.S.Federal Highway Administration www.fhwa.dot. still infiltrating water, many smaller particles are trapped gov/pavement/concrete/pubs/hif19021.pdf has pub- within the surface and interior joints.Smaller particles are lished information supporting PICP use in walkways,pla- trapped and eventually decrease infiltration which results zas,driveways,parking lots,alleys and streets. in surface ponding. ~ (� • Figure 1.MCP Is seeing increased use in municipal streets to reduce stormwater runoff,local flooding,storm pipe upsizing,and combined sewer overflows.These streets are in Atlanta,GA. ®2017!CPI Tech Spec No.23.Interlocking Concrete Pavement Institute•All rights reserved.Revised February 2020. units and dense-graded aggregate bases are not used in '+ ai _ PICP.Sand joints and bedding allow very little water to enter Jujib, ,r and often eventually clog for traffic borne detritus and sedi- .� ment. Construction E&S control is essential.Erosion and sedi- �.:, ment control during construction is covered in the previ- pco- ously mentioned documents,and is customized to each ram• - ..Tvg project via the Stormwater Pollution Prevention Plan or _ SWPPP.An inspection checklist is provided at the end of this bulletin that includes sediment control.If the PICP is Figure 2.Sand-filled joints and bedding common to built first and construction traffic must use it,then it will interlocking concrete pavement are not used in PICP. very likely require vacuum cleaning upon construction completion.The ideal situation is PICP constructed late in Every PICP site varies in sediment deposition onto the project such that it will not receive much construction its surface, particle size distribution, and the resulting traffic and sediment.This may require using temporary cleaning frequency. For example, beach sand (a coarse construction roads. particle size distribution) on the surface will not clog as If PICP receives run-on from upsiope pervious or quickly and require less effort removing than fine clay impervious areas,inspect these areas for erosion and sedi- sediment. Besides the particle size distribution,the rate ment,yard waste,materials storage,etc.Sweep or vacuum of surface infiltration decline also depends on the traffic, the contributing drainage area clean and free of any dirt, size, and slope of a contributing impervious area, adja- leaves and mulch as they are a major source of PICP clog- cent vegetation and eroding soil, paver joint widths and ging.Lawn and planting beds should be sloped away from jointing stone sizes. !CPI offers a PICP site selection tool PICP areas. on www.icpi.org/resource-library/software-programs to help identify favorable sites and avoid one that may Incur Maintain filled joints with stones.The jointing stones cap- ture sediment at the surface so it can easily be removed. additional maintenance. While routine maintenance assures long-term infiltra- If sediment is allowed to settle and consolidate, then tion,surface infiltration can be restored from neglected cleaning becomes more difficult since the sediment is maintenance.A significant advantage of PICP is its ability inside the joint rather than on the surface.Settlement of to remove settled or wheel-packed sediment in the joints. This Tech Spec provides guidance on routine and restor- ative maintenance practices that support surface infiltra- tion.This bulletin also provides guidance on maintaining i .�w the surface as an acceptable pedestrian and vehicular surface. :,t i. ' Practices Supporting Surface Infiltration r PICP design and construction that complies with !CPI o � . �,� guidelines are fundamental to long-term surface infiltra- _ ;-� 's tion. Guidelines are found in ASCE 68-18 standard on • •a .. •-r+ PICP, the !CPI manual, Permeable Interlocking Concrete �: , .� '' .t - ' • Pavements and in !CPI Tech Spec 18-Construction of ,- 166 r • Permeable Interlocking Concrete Pavements available on www.icpi.org. Some essential characteristics described below support continued infiltration. Figure3.Whether eroded onto or dumped on P!CP erosion PICP doesn't use sand.Unlike interlocking concrete pave- and sediment control are essential during construction. ments,sand jointing or bedding materials to support paving ICPr Tech Spec 23 Page 2 _111.11.11111.11111114r .. • . .,;• • - • • • ' 1! jSi ` �,� z -•; - Figure 4.Keeping PICP joints filled with permeable aggregate facilitates removal of accumulated sediment jointing stones in the first few months is normal to PICP as from deep within the joints and bedding, or eventu- open-graded aggregates for jointing and bedding choke ally move through the base/subbase aggregates onto the into the larger base aggregates beneath and stabilize. subgrade and reduce its infiltration. This settlement often requires the joints to be refilled with Filled paver joints means filled to the bottom of the aggregates three to six months after their initial installa- paver chamfers with jointing stone.If the pavers have very tion.If possible,this should be included in the initial con- small or no chamfers,then they should be filled within�/a struction contract specifications. Aggregate-filled joints in. (6 mm)of the paver surface.Should the top of joint- facilitate sediment removal at the surface. ing stone settle below'A in.(6 mm),vacuum equipment Keeping the joints filled during the PICP service life is 'can be less effective in removing sediment and cleaning essential to trapping sediment and facilitating its removal becomes potentially more expensive. at the surface.Permeable segmental paving systems that Manage mulch,topsoil and winter sand.Finally,stockpil- do not use jointing aggregates may incur higher mainte- Ing mulch or topsoil on tarps or on other surfaces during nance time and costs to extract accumulated sediment site maintenance activities rather than directly on the PICP Figure 5.Mulch placed on tarps prevents more expensive Figure 6.Sand from winter maintenance must be removed deaning of Pia! the following spring. ICPi Tech Spec 23 Pag- • • • Figures 7 and 8.Pine needles and leaves eventually will degrade and get compacted into the joints from traffic.They should be removed by sweeping or vacuuming before that happens. surface helps maintain infiltration.Figure 5 illustrates an hand.Herbicide may kill weeds,but dead vegetation and example of correct management of landscaping material roots will remain.They typically reduce infiltration and on PICP,as well as the need to exposed soil slopes. should eventually be removed. Sand used in the winter for traction is not recom- Inspect During and Just After a Rainstorm—The extent mended. Figure 6 illustrates the consequence to PICP of puddles and bird baths observed during and especially joints when subjected to winter sand for traction.If used, after rainstorm indicate a need for surface cleaning. A sand should be removed with vacuuming in the spring minor amount of ponding Is likely to occur particularly at to prevent a substantial decrease in surface infiltration. transitions from Impervious pavement surfaces to PICP. Using jointing aggregate is recommended as a better This often occurs first as sediment is transported by runoff alternative to using sand for winter traction.In addition, and vehicles.See Figures 10 and 11.Should ponding areas the aggregate can provide some refilling of the joints. occupy more than 20%of the entire PICP surface,then Surface Infiltration Inspection &Testing surface cleaning should be conducted.While a rainstorm's Visual Inspection—Effective ways to assess PICP surface exact conclusion is difficult to predict,standing water on infiltration is by conducting visual inspections or tests on PICP for more than 15 minutes during or after a rainstorm the surface before,during and immediately after rainfall. likely indicates a location approaching clogging. Inspect Before a Rainfall—Sediment crusted in the joints - when dry is the most opportune time to remove it.During - dry periods,the sediment layer in each joint can some- ; times dry out and curl upward.This layer can be easily . loosened by vacuum equipment Additionally,deciduous leaves and pine needles even- tually get crushed by traffic,degrade,and work their way into the joints,thereby reducing infiltration.See Figures 7 and 8.The site should be inspected for sediments from adjacent eroding areas and those areas stabilized imme- diately. Weeds growing from within joints indicate accumu- lated sediment in the joints and neglected maintenance. See Figure 9.Weeds will not germinate unless there is Figure 9.Weeds indicate sediment accumulation and lack of accumulated sediment. Weeds should be removed by surface cleaning to remove it. !CPI Tech Spec 23 Page 4 ; S . �s •qn.=. N - . - •'''.'" I 1 0‘‘\\\%\s \\,i ' II • 11111 Figure 10.Erosion of adjacent asphalt and sediment Figure 11.Ponding on PICP typically first occurs at the junction deposition on RCP. with impermeable pavement. -�- `4 V ! �. , Y- _ � O / I i . 41/arar.i ; i. / - :-• ' . f ilei. - .. . :. ilit Ili-. - i , i . . . 4._ . _ . ..,. '4 - 4.. ` Figure 12.Steps in setting up test equipment for measuring surface infiltration using ASTM CT781. Test Surface Infiltration—A quick and subjective test for be accomplished using ASTM C1781 Standard Test Method the amount of surface infiltration is pouring water on PICP. for Surface Infiltration Rate of Permeable Unit Pavement If the water spreads rather than infiltrates,the extent of Systems.Figure 12 illustrates the test set up using a 12 in. spreading suggests an area that may be clogging.Should (300 mm)diameter ring set on plumber's putty.(The ring more than approximately 20% of the surface area see can be metal or plastic.)Figure 13 illustrates the test appa- ponding during or immediately after a rainstorm,a more ratus in place with water poured into it. objective measure of surface infiltration of these areas can !CPI Tech Spec 2.' Faye 5 .,T - -" downloadable calculator for converting time of infiltration to infiltration rates when using C1781.See www.icpi.org/ iu resource-library/software-programs.1i' Surface Infiltration Maintenance Types • 4 - ! Preventive and Restorative Maintenance There are two approaches or service types for maintaining PICP sur- . face infiltration: preventive and restorative. Preventive - maintenance is done regularly to maintain infiltration. It - -' removes most loose sediment and debris from the surface - before being trapped and stuck in the jointing aggregates thereby causing clogging. Preventive maintenance may - • require reinstatement of a small amount of jointing stones ,- •-ti, �� or none at all. Preventive Maintenance Equipment Options for Maintaining Various Sized PICP Applications Cleaning Small Pedestrian Areas and Driveways 'rheas are typically under 2,000 sf or 200 m2 and include patios, plazas, sidewalks, and driveways. Equipment options follow: Figure 13.ASTM C1781:pouring the wanter into a 12 in.(300 Table 1.ASTM C1781 test results:relationship between time mm)inside diameter ring set on plumbers putty. required to infiltrate and calculated surface infiltration rate Approximate surface " Time to infiltration rate ASTM C1781 test method begins with"pre-wetting"an infiltrate water inches/hr(mm/hr) area inside the ring to ensure the surface and materials beneath are wet.This is done by slowing pouring 8 lbs(3.6 8 lbs. (3.6 kg) 40 lbs.(18 kg) kg)of water while not allowing the head of water on the Minutes Seconds water water paver surface to exceed 3/8 in.(10 mm)depth.If the time 0.5 30 235(5,913) '1,175(29,564) to infiltrate 8 lbs of water is less than 30 seconds(using — i 1 60 117(2,956) 1 587(14,782) a stopwatch typically on a cell phone),the subsequent ---" test is done using 40 lbs(18 kg)of water.If more than 30 2 120 59(1,478} �294(7,391) seconds, then 8 lbs of water is used in the subsequent 4 240 29(739) 147(3,696)_ tests.Again,a 3/8 in.(10 mm) head is maintained during 6 360 98(2,464) the pour while being timed with a stopwatch.The surface 8 480 73(1,848) infiltration rate is calculated using formulas in the test 15 900 39(985) method. 30 1800 If infiltration measurements on ponded areas con- 60 3600 sistently result in rates below 20 inJhour (508 mm/hr), they require immediate surface cleaning. PICP surfaces Note:l = (K•M)/(D2•t),where slopedover 2% with less than 40 in./hr infiltrate rate I = Surface infiltration rate,in./hr(mm/hr) K= 126,870 for US customary units(4,583,666,000 for require immediate surface cleaning.An infiltration rate of metric) Mmass,lbs 20 in./hr equates to 30 minutes'infiltration time and 40 D= rinte r diameter(( 2cg) = ring 12 in.or 305 mm) inJhr results in 15 minutes.Table 1 further illustrates the t = time for water to infiltrate in seconds relationship between time for 40 lbs(18 kg)of water to Acceptable performance>100 in./hr(2,500 mm/h) infiltrate and the calculated infiltration rate. ICPI offers a - Plan to clean soon el Clean immediately<20 infhr(500 mm/hr) :CPI Tech Spec 23 Page 6 I milii Figure 14.Bristle broom for removing loose debris Figure 15.Blowing debris to curbs or gutters for removal and disposal. • Figure 16.Rotary brushes increase deaning efficiendes. Hand-held Bristle Broom—Sweep as needed to clear the Wet/Dry Shop Vacuum or Walk-behind Vacuum—Use surface clear of loose debris.See Figure 14. equipment with a minimum 4(peak)HP motor with mini- Leaf Blower(electric or gas powered)—A minimum air mum 130 cubic feet(3.7 m3) per minute suction.These speed of 120 mph (190 kph) is recommended.Jointing machines can remove some jointing aggregates so they aggregates remain in place while removing loose debris may require replenishment.See Figures 17 and 18. such as leaves from the surface.See Figure 15. Power Washer—This equipment should be capable of Rotary Brush with Plastic Bristles—These are often used 1,400 to 1,800 psi (9.6 to 12.4 MPa) pressure.Apply the to spread jointing stone during construction.Same equip- spray at a 30°angle approximately 18 to 24 in.(45 to 60 ment can be used to clean surface to top of joints.Bristles cm) from the surface and adjust as needed.This equip can flip debris out of joints(depends on bristle reach into ment will evacuate jointing aggregate and replenishment will be required.Power washing alone generally is not an the joints).A small amount of aggregate may need to be optimal cleaning approach because there is almost no replaced in the joints after using.See Figure 16. CP!Tech Spec 23 Page 7 77t grit; - - -gyp, - -- - - - f , r - .,P t;• 00111141t. wM • Figure 17.Wet/dry shop Figure 18.Walk-behind vacuum Figure 19.Power washing requires a little practice to vacuum deans loose deans a small parking area. minimize jointing stone removal. sediment from a MCP residential driveway opportunity on most sites to remove the water-suspend- for removing sediment in the joints.Bristles from the the ed sediment before the water is absorbed back into the main broom can reach into joints parallel to the direction pavement.See Figure 19. of the broom rotation,but have little effect on the joints not aligned with the broom rotation.See Figure 20. Cleaning Large PICP Areas These are typically over 2,000 sf or 200 m2 such as large Regenerative Air Sweepers—Includes a box positioned plazas,long sidewalks and driveways,parking lots,alleys under the truck and on the pavement through which air is and streets.Equipment options follow: blown and recirculated(hence the term regenerative air). The pavement must have no convex(or reverse)crown in Street Sweepers—These typically have rotating plastic order to create an adequate seal for suction in the box. bristle brushes positioned near the curb side and center Air pressure flowing through it picks up loose debris and pickup into a hopper at the rear. Do not use water as it sediment.Rotating brushes can be used to direct dirt and slows removal of loose dirt into the machine.This machine debris toward the box.See Figure 21. does provide a small vacuum force to manage dust,but the cleaning action is provided by the mechanical sweep- Restorative infiltration Maintenance for Large ing, so it is moderately effective among large machines Clogged Surfaces Restorative maintenance is conducted when sediment has lodged in the jointing stones from traffic and weather. 10 The condition indicates that the PICP surfaces have not been regularly cleaned.Restorative maintenance requires • some or complete removal of the jointing aggregates to _i increase infiltration.The depth of jointing stone removed r • 1 j• i depends an the penetration depth of the sediment into i ® - . ', the joints.This can be determined on a sample of a few •'milk_ , f '"y.. clogged joints(typically where ponding occurred)by pry- ing out stones and sediment with a flat head screwdriver .xt c., •.1 until little or no accumulated sediment appears. _ True Vacuum Sweepers—These can withdraw jointing material and even the concrete pavers. Therefore, the Figure 20.This type of mechanical sweeper removes sediment vacuum engine revolutions must be adjusted by the from joints parallel to the direction of the broom rotation. !CPI Tech Spec 23 Page 8 . ,ii .. ii . r* S • J I J r :;: ....,...tal, _ ._ ....,.. ._ ,:. _ _ . „ape-- . .,.....„... __ . ., • Figure 21.A regenerative air machine does routine cleaning in a PICP parking lot. ,itiv... � FJ . NO , - _ - 110111.* iiippii0 a tik Arr.". ,At° 0 - - - -:. » ="x=^ ot '. :,r„ _5 .' j. Figure 22.A true vacuum machine cleaning neglected PICP. machine operator during a few test runs to find the set- required to vacuum up the debris that is dislodged. In ting that withdraws the needed depth of sediment and Figure 24,the machine in the foreground blows debris jointing aggregate.After withdrawal,jointing aggregates completely out of the joints and the second machine will require replenishment.The suction orifice is typically takes up the debris into a vac truck similar to that used to about a yard(meter)wide and positioned on the curb side clean catch basins.See Figure 24.As with all restorative of the truck.Extremely clogged surfaces will require two cleaning methods,clean jointing stone is spread and the or more passes. Figure 22 shows this machine.It is often empty joints are filled.After removing excess stones from used by municipalities to clean out storm drain catch the surface,the pavers with filled joints are compacted basins and may require a separate vacuum attachment to with a minimum 5,000 lbf(22 kN)vibratory plate compac- clean pavements. tor operating at 75-90 Hz.See Figure 25.This helps settle the stones into the joints. Any joints were stones have High-power Washing and Vacuum Equipment—Figure settled should be filled with more stones within a'/a inch 23 shows the equipment for restorative cleaning where water is applied to help loosen sediment and stones in the (5 mm)of the paver surfaces. joints.Figure 23 shows a vacuum that withdraws sediment Inspection Intervals and Procedures for and stones immediately after applying water.The water Maintaining Surface Infiltration and debris are drawn into a vac truck. Preventive maintenance provides the best infiltration High Pressure AlrNacuum—High pressure air is blasted performance by implementing the following procedures: into the joints and has been shown to be very effective 1. Weekly—Prevent contamination from routine land- at dislodging sediment and debris.A second step is then scape maintenance such as grass clippings from mow- ing,hedge trimming,mulching plant beds,etc.by: !CPI Tech spec 23 Page 9 --,---• ' .....--041.1" -,k111M1. 101111*- — ..71e:orr. ' . 4Sicwr— • rt N i - 91•...cr.._ ,\ ' •r • -s-C .q 1 }. _ '4- • Figure 23.This equipment provides combined washing and Figure 24.This equipment blows sediment and soiled vacuum of unmaintalned PICP. aggregate from the joints and uses vacuum equipment to litremove them. 4+. remove and replenish the jointing stones and sediment "i 4.1ii ii. usingrestorative cleaning g equipment and procedures. I' Note:Various factors will affect each project's preventive main- tenance schedule and each must be reviewed individually. Winter Maintenance = _ Snow Removal—Unlike other permeable pavement sur- _: - _. _ faces,PICP demonstrates durability in the winter.PICP can be plowed with steel or hard rubber blades.Steel blades r � __,y__ - _ _ typically scratch all pavement surfaces.When using corn- Figure No matterthe equipment used after removing mercial snow removal companies,confirm in writing they sediment soiled aggregate dean aggregate is placed in the provide protective edges on the snowplow equipment to joints,the surfaced cleaned and compacted. avoid scratching the surface.Most pavers have chamfers •Broom sweep debris from the paver surface,or on their surface edges which can help protect the edges from chipping by snow plows. For smaller areas, use a •Blow debris from the paver surface with a powered plastic snow shovel and fit snow blowers with plastic on leaf blower onto other surfaces that will not re the scoops and on the gliders. When possible deposit transmit it to the PICP surface. plowed snow onto grassy areas and not on the PICP when •Mechanically sweep paver surface. the plowed snow is dirty.Such dirt will remain and likely •Remove loose debris, leaves, needles, sediment, help clog the PICP surface after the snow melts. topsoil,mulch,etc.after severe rain storms using the above procedures. •Collect and dispose of debris. - _ 2. Semi-annually—Remove loose surface debris from the ' _t pavers and jointing stones(1)when trees have defoli- - _. -. - - ated in the fall and(2)at the end of winter snowfall. •sr. •Use a wet/dry vacuum for small areas and a regenera- tive air machine for larger areas. •Replenish jointing stone as needed to the bottom of the paver chamfers. lir •Check any observation wells and outlet pipes from underdrains to confirm drain down and water outflows. Figure 26.This is an example of snow that should have been 3. Six to ten years—Based on observation and during deposited on a grassy area.if such areas are not available,then rainstorms and subsequent surface infiltration tests, vacuum clean the PICP in the early spring. !CPI Tech Spec 23 Page 10 Table 2.Maintenance guidelines for all PICPdistresses r_. Distress • Clogging - -- Vacuum sweep surface to remove 1 to 2 times annually;adjust frequency sediment. based on sediment loading Clogged/Damaged Clean out or repair secondary drainage Annually,after major rain event Secondary Features features. Depressions Repair all paver surface depressions, Annually,repair as needed exceeding 0.5 in.(13 mm) Repair all paver surface rutting, Annually, repair as needed exceeding 0.6 in.(15 mm) Repair all paver surface faulting, Annually, repair as needed exceeding 1 225 in.(6 mm) Damage Paver Units Replace medium to High severity Annually, repair as needed cracked,spelled or chipped paver units. Edge Restraint Repair pavers offset by more than 0.25 Damage in.(6 mm)from adjacent units or curbs, Annually,repair as needed inlets,etc. Excessive Joint Width Repair pavers exhibiting joint widths Annually, repair as needed exceeding 0.5 in.(13 rum) Joint Filler Loss Replenish aggregate in joints. As needed Horizontal Creep Repair areas exhibiting horizontal creep Annually,repair as needed exceeding 0.4 in, (10 min) Missing pavers shall be replaced. Additional DIstresse._ A geotechnical investigation is Annually,repair as needed recommended for pavement heaves. Deicers—When used sparingly,deicers should not dam- ally destroy all concrete materials.Anti-icing agents that age PICP surfaces as the brine typically forms on the contain ammonium nitrate and ammonium sulfate should surface to lower the freezing temperature of water and not be used since they can also erode concrete.Always eventually moves into the joints with melting ice or snow. read and follow the manufacturer's recommendations for Some deicers will accelerate surface wear on some styles use and heed all warnings and cautions. of pavers with blasted or hammered surfaces.Sealers may help reduce the risk of damage. Maintenance for Other Distresses Deicer types acceptable for use in on PICP surfaces Over time and traffic, PICP can exhibit other distresses include sodium chloride,calcium chloride and potassium besides surface ponding from clogged joints.These are chloride.Do not use magnesium chloride as it will eventu- outlined in Table 2 and remedies are provided. !CPI Tech Spec 23 Page 11 Utility Restoration Guidelines deflectomer(LWD)can be used to ensure that deflec- 1. Remove and store pavers for reuse. Secure undis- tions of the compacted base aggregate are below an turbed pavers in opening with wood or metal frame. average of 0.5 mm(assuming a minimum 12 in. (300 mm))compacted aggregate subbase.An LWD should 2. Remove and dispose of all jointing and bedding be used according to ASTM E2835. aggregate as they typically cannot be re-used. 9. Place and screed new bedding aggregate in a consis- 3. Remove the aggregate base and subbase material. tent thickness layer between 1.5 and 2 in.(38 and 50 Incidental mixing of base and subbase aggregates is mm). acceptable, but make every effort to separate them. Store in on impermeable pavement or a geotextile to 10.Reinstate pavers with at surface at least 1 in.(25 mm) prevent contamination. Do not reuse contaminated higher than the final elevation.Compact the pavers in aggregate. two perpendicular directions with a minimum 5,000 lbf(22 kN)plate compactor.Fill joints with aggregate, 4. Re-compact subgrade material as required for stability sweep away excess, and compact the pavers in two during utility repairs. perpendicular directions again. Compact pavers so 5. Repair or install utility as required. they are level with surrounding pavers. 6. If below the bottom of the subbase, place and com- 11.Sweep surface clean and remove any excess aggre- pact dense-graded road base in lifts not exceeding 6 gate and debris. in.(150 mm)and compact to 100 percent of standard Other recommendations include keeping all removed Proctor maximum dry density.The top of the dense- materials clean and free of sediment and debris.Minimize graded aggregate should be at the same elevation as excess debris from construction activities and equipment the bottom of the open-graded subbase aggregate. entering the permeable surface.Store all materials away 7. Reinstate and compact the subbase aggregate in mini- from the permeable surface,otherwise separate materials mum 6 in.(150 mm) lifts.Use a minimum 13,500(65 from the permeable surface with geotextile. Pavement kN)plate compactor with a compaction indicator.Add cuts located parallel and close to the wheel path should new subbase aggregate if needed. be extended to include the wheel path.Cuts located with- 8. Reinstate and compact the base aggregate as one 4 in. in 3 ft(1 m)of a curb or construction joint should include (100 mm)lift.Use a minimum 13,500 lbf(65 kN)plate the removal of the adjacent base and subbase to the edge compactor with a compaction indicator.A lightweight of the curb or construction joint. ' CPI Interlocking Concrete Pavement Institute® 14801 Murdock Street Tel:703.657.6900 Suite 230 Fax 703.657.6901 Chantilly,VA 20151 E-mail:icpi@lcpi.org In Canada: P.O.Box 1150 Uxbridge,ON L9P 1 N4 Canada The contentofICPI Tech Spec technical bulletins is intended for useonly as a guide- line Iris not intended foruseor reliance upon as an industry standard,certification or as a specification.!CPI makes no promises,representations or warranties ofany kind,expressed or implied as to the content of the Tech Spec Technical Bulletins and disclaims any liability fordamages resulting from theuseof Tech Spec Techni- cal Bulletins.Professional assistance should be sought with respect to the design, specifications and construction of each project. BOD Approved::February 2020 [CPI Tech Spec 23 Page 12 `1' 1 t '®OC N1