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Home My Public Portal AboutMidwest Block and Brick 1-25-21Metropolitan St. Louis Sewer District 2350 Market Street St. Louis, MO 63103-2555 (314) 768-6200 January 25, 2021 Mr. David Mudd Midwest Block & Brick 12901 St. Charles Rock Road Bridgeton, MO 63044 RE: Permeable Interlocking Concrete Pavement (PICP) - A Structural BMP Dear Mr. Mudd, The Metropolitan St. Louis Sewer District (MSD) has reviewed your application of Permeable Interlocking Concrete Pavement (PICP). Products covered by this letter are the Turfstone, EcoElite 5x10 Type 1 and EcoElite L-10 Type 4 (formerly known as Aqua-Bric), Uni-Eco- Stone, and Mission Paver. MSD understands that these pavers enhance surface permeability by the open space created between the blocks, and are recognized as a permeable pavement in satisfying MSD stormwater management requirements. MSD has determined that the PICP may be used under the following conditions: 1. Proposed uses and designs of the paving units must be in general conformance with the information and methodologies provided previously under Kirchner Block and Brick and by Midwest Block and Brick. Uses and designs shall also comply with the Interlocking Concrete Pavement Institute (ICPI) and MSD's permeable pavement design and construction guidelines. 2. Channel Protection Volume (CPv) storage may be provided in the base stone and subbase stone beneath the PICP and bedding layer. 3. The minimum pavement section subject to vehicular traffic shall be (from top to bottom) 3 1/8 inch thick paving units, 2 -inch thick bedding stone (typically ASTM No. 8 or 9 stone), 4 -inch thick layer of base stone (ASTM No. 57 or similar size), and a layer of subbase stone (ASTM No. 2 or similar size), all underlain by MSD type 4 filter fabric. The thickness of the subbase will vary depending on storage and anticipated traffic loads. However, a minimum 12 -inch thick subbase will be required for all applications. 4. The post -developed curve number (CN) for the footprint of the paving units may be reduced. Reduced CN numbers are provided below. Soil A B C D CN 61 61 74 80 5. The PICP system will be considered as a pervious area for the purpose of calculating Water Quality Volume (WQv) and 5 percent impervious when calculating the differential runoff with PI factors. However, the PICP will be considered as a 100 percent impervious area for the purpose of calculating pipe sizes downstream and when evaluating a site's annual post developed runoff condition. 6. PICP may be considered as a stand-alone BMP in certain design instances. Those designs are subject to MSD review and approval. 7. Project specific design calculations and maintenance plans must be included within the project's "Stormwater Management Facilities Report" prepared by the consulting Engineer. MSD reserves the ability to withdraw or modify this approval based on subsequent information, including information indicating that the pavers do not satisfy MSD rules, requirements, or construction and material specifications. Sincerely, Robert A. Miler, P.E. Principal Engineer (BMP Committee Chairman) Engineering / Planning - Development Review Metropolitan St. Louis Sewer District gl ■ MIDWEST II BLOCK & BRICK 411,1141' Old Mission Paver OMAN STON HAROSC APES' E for more ideas t:mlyw.RonIznstone.tom Permeable Paving Products OR ODUCT gut IN INCNFL (O■Ili .L) UNIT 16OfT Turfstone 80mm 3.15x 15.7 x 23.6 0.39 UNRf?ALLIT 40 SOFYMA1UT 103 _ 11tT/PA&IRT 2320 COLORS Available in: Sold byrhepatt;e Natural Aqua -Brie 80mm 315x4.9 x 9 S 2 97 280 94 33 adabkin: Aqua -Brie 80mm Type 4 Aqua-Brie 80mm Type 4L 3.15 x 4.9 x 9 315 8 1.93 -- .. Tara Cotta Blend end TlmDetwood Blend Available on a special order basis Desiy'ned lot mechanic., •Nn Sold inl Uni-Eco-Stone 80mm 3.15x 1.5 x 9 3.51 320 91 3101 Available on a vocal order basis Sold in lull pa.Jets only Available in: Wei/pager with three sizes per lay 94. Blaerspertsal •t (Soh'd by the pallet cv layer orgy t ayer:12. S Sr) 100 3050 Cedar Valley Blend and Ozark Blond ECO-ELITETM 5x10 - TYPE 1 AgaOhs PERMEABLE PAVERS Pedestrian Friendly, Environmentally Advanced - THE ECO-ELITET" SYSTEM Keystone Hardscapes and Midwest Block & Brick presents a pedestrian -friendly stormwater management system featuring Eco-Elite permeable pavers. The smooth, flat surface created using Eco-Elite meets ADA standards and is a superior choice for areas with high foot traffic — even for pedestrians in high heels or wheel chairs. Ideal for plazas, walkways, entrances and parking lots, Eco-Elite is used by both Keystone Hardscapes and Midwest Block & Brick to implement the environmentally sound Permeable Interlocking Concrete Pavers (PCIP) system. UNITS Eco-Elite"' 5x10 - Type 1 PRODUCT NOMINAL DIMENSIONS PRODUCT # Width length Height 5x10 80mm 5" 127mm 10" 254mm 3-1/8" 80mm MBP7001 Before specifying a specific product, please confirm availability with your local Midwest Block & Brick producer. FEATURES & BENEFITS • Meets pedestrian slip resistance standards from the Americans with Disabilities Act (ADA) Architectural Guidelines, as well as EPA stormwater requirements • Provides smooth surfaces with minimal openings to make walking more comfortable • Allows for rapid removal of stormwater through void openings • Eliminates standing water for plazas and walkways without sloping • Maximizes design flexibility by enabling a wide range of creative patterns • Simplifies maintenance in climates with ice and snow MIDWEST 1111 BLOCK & BRICK Note: Unit color, dimensions, weight, and availability varies by manufacturer. A fluilfRETE. COMPANY ECO-ELITETM L-10 MECH - TYPE 4L Pedestrian Friendly, Environmentally Advanced - THE ECO-ELITE'" L-10 MECH SYSTEM Keystone Hardscapes and Midwest Block & Brick presents a pedestrian -friendly stormwater management system featuring Eco-Elite permeable pavers. The smooth, flat surface created using Eco-Elite meets ADA standards and is a superior choice for areas with high foot traffic — even for pedestrians in high heels or wheel chairs. Ideal for plazas, walkways, entrances and parking lots, Eco-Elite is used by both Keystone Hardscapes and Midwest Block & Brick to implement the environmentally sound Permeable Interlocking Concrete Pavers (PCIP) system. UNITS Eco-Elite'" L-10 Mech - Type 4L PRODUCT NOMINAL DIMENSIONS PRODUCT # Width Length Height L-10 Mech 80mm 10" 254mm 10" 254mm 3-1/8" 80mm MBP7102 Before specifying a specific product, please confirm availability with your local Midwest Block & Brick producer. FEATURES & BENEFITS e Meets or exceeds State, City and Local "Water Quality" and "Volume Treatment" requirements • Anti -faulting "L -Shape" joint/void system • Has an 8% open surface with documented 440 inches of rain per hour surface filtration rate. • Provides the 3 disciplines of "Interlock" • Meets American with Disabilities Act • Mold configuration allows for machine set or hand install MIDWEST 1111 BLOCK & BRICK Note: Unit color, dimensions, weight, and availability varies by manufacturer. A gueurf7Ecomwnr - ' MIDWEST in BLOCK & BRICK +re='blcck_.cO-rlhniexph:vlo noes Locations «T, TOLL FYt' 'MAIM Fit ARKANSAS Springdale ILLINOIS 1589 Electric Avenue. Springdale. AR 72764-7351 I (479) 750-7887 I (479) 872-7580 I Quincy 6003 Stale Street, Quincy, IL 62301 (217) 223-2(W (217) 223-0335 Waterloo 8605 State Route 3, Waterloo, IL 62298 (618) 939-: tJ:.1 (618) 939-7660 Paducah MISSOURI DDT Estelle Street. Paducah KY 42001 (270) 442.3585 I (270)442.3588 I Bridgeton 12901 St. Charles Rc-cfc Road, Bridgeton, MO 63044 I3'.4) 291-3203 (314) 291.0265 201 Rock Industrial Drive, Bridgeton, MO 63044 (314) 291.3200 (314) 298-3843 Cape Girardeau 2525 Stale Hwy 177, Cape Girardeau, MD 63701 (573) 334.1835 (573) 334-1834 Columbia 3115 Paris Read, Columbia, MO 65202 (573) 445-9484 (573) 445-9268 Jefferson City 2203 E. McCarty Street. Jefferson City. MO 65101 (573) 635.7119 (573) 635.2644 Kansas City 4101 East 12th Terrace, Kansas City, MD 64127 (816) 241.5197 (816) 241-5279 Osage Beach 6293 Osage Beach Parkway, Osage Beach, MO 65065 (573) 348-1774 (573) 348.1775 Springfield 1650 East Atlanac, Springfield, MO 65803 (4 i r") 849•' 595 2 (417) 669.6052 VYcnt vale 15581 Veterans Memorial Parkway, Wentzville, MO 63385 (636)332-9784 (636) 332-9792 Tulsa TENNESSEE `_`519 East 15th Str i t, Tulsa, OK 74112 (918) 836.9151 I (018) 836-2002 Oakland 20: Pies_ Road. Oakland. TN 38060 Other Ma'es (90'.) 465-6611 I (901) 465.6605