Facility Info

2663
Grace

17434 Mojave Street
Hesperia, CA 92345
Phone: 760-244-6107
Fax: 760-244-1984
2361 - Grace
3/7/05 rec'd an application for a change of owner. The name is going from The Separations Group to Alltech Associates, Inc. (WR Grace & Co. - Conn.) bw 10-16-2017 Moved Companies From Alltech Associates, Inc.(1572) to Grace(2361)

Permit Number Permit Description Equipment Description Issue Date Expiration Date Action
B008922 SILICA MANUFACTURING AREA Seven "pearl" reactor units vented to atmosphere... 01/06/2026 01/31/2027 Download Permit
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B008923 SILICA MANUFACTURING ELUTRIATION AREA Up to thirty-two 55 gallon settling drums (area ... 01/06/2026 01/31/2027 Download Permit
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B008924 COLUMN PACKING AREA Two small hoods vented to atmosphere through a c... 01/06/2026 01/31/2027 Download Permit
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B008925 PREPARATIVE BONDING AREA N/A 01/06/2026 01/31/2027 Download Permit
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B008926 ALPHA POLYMER AREA N/A 01/06/2026 01/31/2027 Download Permit
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B008927 ANALYTICAL BONDING AREA Three chemical hoods with individual exhaust sta... 01/06/2026 01/31/2027 Download Permit
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B008929 QC ANNEX AREA One lab hood and one Micrometrics analytical tes... 01/06/2026 01/31/2027 Download Permit
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B008930 JONES MANUFACTURING AREA Four chemical hoods with individual exhaust stac... 01/06/2026 01/31/2027 Download Permit
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B009106 QC LAB One chemical hood with an exhaust stack. 01/06/2026 01/31/2027 Download Permit
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B012332 MP50 SILICA PROCESS LINE A batch process line producing ultra-pure silica... 01/09/2019 01/31/2020 Download Permit
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B012474 MAGNETITE PROCESS LINE A 228 liter process reactor/mixing tank which pr... 01/06/2026 01/31/2027 Download Permit
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B012478 MP50/MP85 PROCESS LINE Two 57 liter stainless steel reaction chambers u... 01/06/2026 01/31/2027 Download Permit
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B015082 SHAKER SEPARATOR Sweco Shaker material separation system, with a... 01/06/2026 01/31/2027 Download Permit
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C008928 DUST COLLECTORS (DRY SIZING) two dust collectors serving the dry sizing area:... 01/06/2026 01/31/2027 Download Permit
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C011791 DUST COLLECTOR (SIEVE ROOM) Manufactured by PowerTec, Model DC1512, 23"W X 2... 01/02/2024 01/31/2025 Download Permit
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