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I.B Is the project a “C.3 Regulated Project” per MRP Provision C.3.b? (Use table below to make determination.)
<br />I.B.1 Enter the amount of Impervious surface Retained, Replaced or Created5 by the project (use DMA Table in Worksheet D):
<br />Table I.B.1 Impervious6 and Pervious6 Surfaces (Match DMA Summary Table in Worksheet D, if applicable)
<br />Pre-Project
<br />I.B.1.a I.B.1.b I.B.1.c I.B.1.d I.B.1.e
<br />Existing
<br />(Pre-Project)
<br />Impervious Surface
<br />(sq.ft.)
<br />Existing
<br />Impervious
<br />Surface to be
<br />Retained5 (sq.ft.)
<br />Existing
<br />Impervious
<br />Surface to be
<br />Replaced5 (sq.ft.)
<br />New Impervious
<br />Surface to be
<br />Created5 (sq.ft.)
<br />Post-Project
<br />Impervious
<br />Surface (sq.ft.)
<br />(=b+c+d)
<br />
<br />
<br />
<br />I.B.1.f sq. ft.
<br />Existing (Pre-Project)
<br />Pervious Surface
<br />(sq.ft.)
<br />Post-project
<br />Pervious Surface
<br />(sq.ft.)
<br />I.B.1.g
<br />
<br /> I.B.1.h
<br />Check One
<br /> Yes No
<br />I.B.2.a
<br />I.B.2.b
<br />I.B.2.c
<br />I.B.2.d
<br />I.B.2.e
<br />I.B.2.f
<br />I.B.2.g
<br />I.B.2.h
<br />I.B.2.i
<br />I.B.2.j
<br />Total Impervious Surface Replaced and Created:
<br />(sum of totals for columns I.B.1.c and I.B.1.d):
<br />Subtotal:
<br />Impervious Surfaces (IS)
<br />(e.g., sidewalks, driveways, parking areas, patios, roads, rooftops,
<br />pools, pathways, etc.)
<br />On-site area (within the parcel/private site boundaries)
<br />Off-site area (e.g., frontage/other area in Public Right of Way)
<br />Post-Project
<br />Attach
<br />WorksheetReview Steps
<br />Pervious Pavement area on-site
<br />Green Roof area on-site
<br />Pervious Surfaces (PS)
<br />(e.g., landscaping, pervious pavement, bioretention areas, parking
<br />strips, street trees, etc. - both on-site and off-site)
<br />Subtotal:
<br />Total Project Area (should be equal to I.A.1)
<br />Please review and attach additional worksheets as required below using the Total Impervious Surface (IS) Replaced or Created in
<br />cell I.B.1.f from Table I.B.1 above and other factors:
<br />All pervious off-site area (e.g., frontage/Public Right of Way)6
<br />Landscaping area on-site
<br />I.B.2
<br />50% Rule Calculation
<br />Is I.B.1.f greater than or equal to 5,000 sq.ft? (Or 10,000 sq.ft. for a Large Single-Family Home?)
<br />If YES, project is a C.3 Regulated Project - complete Worksheet D. Then continue to I.B.2.f.
<br />If NO, then skip to I.B.2.g. - or ask municipal staff for Small Project Checklist.
<br />A
<br />B, C
<br />D
<br />Does this project involve any earthwork and/or stockpiling of soil, aggregates etc?
<br />If YES, then Check Yes, and Complete Worksheet A.
<br />If NO, then Check No, and go to I.B.2.b
<br />Is I.B.1.f greater than or equal to 2,500 sq.ft?
<br />If YES, then the Project is subject to Provision C.3.i. - complete Worksheets B, C and go to I.B.2.c.
<br />If NO, go to I.B.2.i - or ask municipal staff for Small Project Checklist.
<br />Does the 50% rule apply to the project? Is I.B.1.h 50% or more?
<br />If YES, site design, source control and treatment requirements apply to the entire on-site area. Continue to I.B.2.d
<br />If NO, these requirements apply only to the impervious surface created and/or replaced. Continue to I.B.2.d
<br />Is this project a Roadway Project and is I.B.1.f greater than or equal to 5,000 sq.ft?
<br />If YES, project may be C.3 Regulated Project. See the Roadways Fact Sheet at: www.flowstobay.org/newdevelopment
<br />If NO, go to I.B.2.e
<br />_______________________________
<br />5 “Retained” means to leave existing impervious surfaces in place; “Replaced” means to install new impervious surface where existing impervious surface is removed anywhere on
<br />the same site; and “Created” means the amount of new impervious surface being proposed which exceeds the total amount of existing impervious surface at the site.
<br />6 Per the MRP, pavement that meets the following definition of pervious pavement is NOT an impervious surface. Pervious pavement is defined as pavement that stores and
<br />infiltrates rainfall at a rate equal to immediately surrounding unpaved, landscaped areas, or that stores and infiltrates the rainfall runoff volume described in Provision C.3. Gravel
<br />pavement is not pervious unless it is constructed using pervious pavement system designs or runoff flows to adjacent landscaping. Pervious off-site areas include landscaped
<br />areas such as parking strips and street trees; off-site pervious pavement includes pervious concrete gutters and interlocking permeable concrete paver sidewalks, etc. 7/1/23
<br />Is I.B.1.f greater than or equal to 43,560 sq.ft, (i.e., one acre)?
<br />If YES, project may be subject to Hydromodification Management requirements - complete Worksheet E then go to I.B.2.g.
<br />If NO, then go to I.B.2.g.
<br />Is I.A.4 greater than or equal to 43,560 sq.ft., (i.e., one acre)?
<br />If YES, check box, obtain coverage under CA Construction General Permit & submit Notice of Intent to municipality- go to I.B.2.h.
<br />If NO, then go to I.B.2.h.
<br />For more information see: www.swrcb.ca.gov/water_issues/programs/stormwater/construction.shtml
<br />Is this a Special Project or does it have the potential to be a Special Project?
<br />If YES, complete Worksheet F - then continue to I.B.2.i.
<br />If NO, go to I.B.2.i.
<br />Is this project a High Priority Site? (Determined by the Municipality. High Priority Sites can include those located within 100 ft. of a
<br />sensitive habitat, an Area of Special Biological Significance, a body of water, or on sites disturbing >=5,000 sq.ft. with slopes
<br />>=15% (see I.A.5) [or per municipal criteria/map.] Subject to monthly inspections from Oct 1 to April 30.)
<br />If YES, complete section G-2 on Worksheet G - then continue to I.B.2.j. and complete the Certification in Section I.A.6
<br />If NO, then go to I.B.2.j and complete the Certification in Section I.A.6
<br />For Municipal Staff Use Only: Are you using Alternative Certification for the project review?
<br />If YES, then fill out section G-1 on Worksheet G. Fill out other sections of Worksheet G as appropriate.
<br />See cell I.B.1.g above - Is the project installing 3,000 square feet or more of pervious pavement?
<br />If YES, then fill out section G-3 on Worksheet G. Add to Municipal Inspection Lists (C.3 and C.3.h)
<br />E
<br />F
<br />G
<br />G
<br />%
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